changes.txt revision 204773
1---------------------------------------- 204 March 2010. Summary of changes for version 20100304: 3 41) ACPI CA Core Subsystem: 5 6Fixed a possible problem with the AML Mutex handling function 7AcpiExReleaseMutex where the function could fault under the very rare 8condition when the interpreter has blocked, the interpreter lock is released, 9the interpreter is then reentered via the same thread, and attempts to 10acquire an AML mutex that was previously acquired. FreeBSD report 140979. Lin 11Ming. 12 13Implemented additional configuration support for the AML "Debug Object". 14Output from the debug object can now be enabled via a global variable, 15AcpiGbl_EnableAmlDebugObject. This will assist with remote machine debugging. 16This debug output is now available in the release version of ACPICA instead 17of just the debug version. Also, the entire debug output module can now be 18configured out of the ACPICA build if desired. One new file added, 19executer/exdebug.c. Lin Ming, Bob Moore. 20 21Added header support for the ACPI MCHI table (Management Controller Host 22Interface Table). This table was added in ACPI 4.0, but the defining document 23has only recently become available. 24 25Standardized output of integer values for ACPICA warnings/errors. Always use 260x prefix for hex output, always use %u for unsigned integer decimal output. 27Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about 400 28invocations.) These invocations were converted from the original 29ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835. 30 31Example Code and Data Size: These are the sizes for the OS-independent 32acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 33debug version of the code includes the debug output trace mechanism and has a 34much larger code and data size. 35 36 Previous Release: 37 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 38 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 39 Current Release: 40 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 41 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 42 432) iASL Compiler/Disassembler and Tools: 44 45iASL: Implemented typechecking support for static (non-control method) 46predefined named objects that are declared with the Name() operator. For 47example, the type of this object is now validated to be of type Integer: 48Name(_BBN, 1). This change migrates the compiler to using the core predefined 49name table instead of maintaining a local version. Added a new file, 50aslpredef.c. ACPICA BZ 832. 51 52Disassembler: Added support for the ACPI 4.0 MCHI table. 53 54---------------------------------------- 5521 January 2010. Summary of changes for version 20100121: 56 571) ACPI CA Core Subsystem: 58 59Added the 2010 copyright to all module headers and signons. This affects 60virtually every file in the ACPICA core subsystem, the iASL compiler, the 61tools/utilities, and the test suites. 62 63Implemented a change to the AcpiGetDevices interface to eliminate unnecessary 64invocations of the _STA method. In the case where a specific _HID is 65requested, do not run _STA until a _HID match is found. This eliminates 66potentially dozens of _STA calls during a search for a particular device/HID, 67which in turn can improve boot times. ACPICA BZ 828. Lin Ming. 68 69Implemented an additional repair for predefined method return values. Attempt 70to repair unexpected NULL elements within returned Package objects. Create an 71Integer of value zero, a NULL String, or a zero-length Buffer as appropriate. 72ACPICA BZ 818. Lin Ming, Bob Moore. 73 74Removed the obsolete ACPI_INTEGER data type. This type was introduced as the 75code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0 (with 7664-bit AML integers). It is now obsolete and this change removes it from the 77ACPICA code base, replaced by UINT64. The original typedef has been retained 78for now for compatibility with existing device driver code. ACPICA BZ 824. 79 80Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field in 81the parse tree object. 82 83Added additional warning options for the gcc-4 generation. Updated the source 84accordingly. This includes some code restructuring to eliminate unreachable 85code, elimination of some gotos, elimination of unused return values, some 86additional casting, and removal of redundant declarations. 87 88Example Code and Data Size: These are the sizes for the OS-independent 89acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 90debug version of the code includes the debug output trace mechanism and has a 91much larger code and data size. 92 93 Previous Release: 94 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 95 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 96 Current Release: 97 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 98 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 99 1002) iASL Compiler/Disassembler and Tools: 101 102No functional changes for this release. 103 104---------------------------------------- 10514 December 2009. Summary of changes for version 20091214: 106 1071) ACPI CA Core Subsystem: 108 109Enhanced automatic data type conversions for predefined name repairs. This 110change expands the automatic repairs/conversions for predefined name return 111values to make Integers, Strings, and Buffers fully interchangeable. Also, a 112Buffer can be converted to a Package of Integers if necessary. The nsrepair.c 113module was completely restructured. Lin Ming, Bob Moore. 114 115Implemented automatic removal of null package elements during predefined name 116repairs. This change will automatically remove embedded and trailing NULL 117package elements from returned package objects that are defined to contain a 118variable number of sub-packages. The driver is then presented with a package 119with no null elements to deal with. ACPICA BZ 819. 120 121Implemented a repair for the predefined _FDE and _GTM names. The expected 122return value for both names is a Buffer of 5 DWORDs. This repair fixes two 123possible problems (both seen in the field), where a package of integers is 124returned, or a buffer of BYTEs is returned. With assistance from Jung-uk Kim. 125 126Implemented additional module-level code support. This change will properly 127execute module-level code that is not at the root of the namespace (under a 128Device object, etc.). Now executes the code within the current scope instead 129of the root. ACPICA BZ 762. Lin Ming. 130 131Fixed possible mutex acquisition errors when running _REG methods. Fixes a 132problem where mutex errors can occur when running a _REG method that is in 133the same scope as a method-defined operation region or an operation region 134under a module-level IF block. This type of code is rare, so the problem has 135not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore. 136 137Fixed a possible memory leak during module-level code execution. An object 138could be leaked for each block of executed module-level code if the 139interpreter slack mode is enabled This change deletes any implicitly returned 140object from the module-level code block. Lin Ming. 141 142Removed messages for successful predefined repair(s). The repair mechanism 143was considered too wordy. Now, messages are only unconditionally emitted if 144the return object cannot be repaired. Existing messages for successful 145repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ 827. 146 147Example Code and Data Size: These are the sizes for the OS-independent 148acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 149debug version of the code includes the debug output trace mechanism and has a 150much larger code and data size. 151 152 Previous Release: 153 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 154 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 155 Current Release: 156 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 157 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 158 1592) iASL Compiler/Disassembler and Tools: 160 161iASL: Fixed a regression introduced in 20091112 where intermediate .SRC files 162were no longer automatically removed at the termination of the compile. 163 164acpiexec: Implemented the -f option to specify default region fill value. 165This option specifies the value used to initialize buffers that simulate 166operation regions. Default value is zero. Useful for debugging problems that 167depend on a specific initial value for a region or field. 168 169---------------------------------------- 17012 November 2009. Summary of changes for version 20091112: 171 1721) ACPI CA Core Subsystem: 173 174Implemented a post-order callback to AcpiWalkNamespace. The existing 175interface only has a pre-order callback. This change adds an additional 176parameter for a post-order callback which will be more useful for bus scans. 177ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference. 178 179Modified the behavior of the operation region memory mapping cache for 180SystemMemory. Ensure that the memory mappings created for operation regions 181do not cross 4K page boundaries. Crossing a page boundary while mapping 182regions can cause kernel warnings on some hosts if the pages have different 183attributes. Such regions are probably BIOS bugs, and this is the workaround. 184Linux BZ 14445. Lin Ming. 185 186Implemented an automatic repair for predefined methods that must return 187sorted lists. This change will repair (by sorting) packages returned by _ALR, 188_PSS, and _TSS. Drivers can now assume that the packages are correctly sorted 189and do not contain NULL package elements. Adds one new file, 190namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore. 191 192Fixed a possible fault during predefined name validation if a return Package 193object contains NULL elements. Also adds a warning if a NULL element is 194followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement may 195include repair or removal of all such NULL elements where possible. 196 197Implemented additional module-level executable AML code support. This change 198will execute module-level code that is not at the root of the namespace 199(under a Device object, etc.) at table load time. Module-level executable AML 200code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming. 201 202Implemented a new internal function to create Integer objects. This function 203simplifies miscellaneous object creation code. ACPICA BZ 823. 204 205Reduced the severity of predefined repair messages, Warning to Info. Since 206the object was successfully repaired, a warning is too severe. Reduced to an 207info message for now. These messages may eventually be changed to debug-only. 208ACPICA BZ 812. 209 210Example Code and Data Size: These are the sizes for the OS-independent 211acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 212debug version of the code includes the debug output trace mechanism and has a 213much larger code and data size. 214 215 Previous Release: 216 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 217 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 218 Current Release: 219 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 220 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 221 2222) iASL Compiler/Disassembler and Tools: 223 224iASL: Implemented Switch() with While(1) so that Break works correctly. This 225change correctly implements the Switch operator with a surrounding While(1) 226so that the Break operator works as expected. ACPICA BZ 461. Lin Ming. 227 228iASL: Added a message if a package initializer list is shorter than package 229length. Adds a new remark for a Package() declaration if an initializer list 230exists, but is shorter than the declared length of the package. Although 231technically legal, this is probably a coding error and it is seen in the 232field. ACPICA BZ 815. Lin Ming, Bob Moore. 233 234iASL: Fixed a problem where the compiler could fault after the maximum number 235of errors was reached (200). 236 237acpixtract: Fixed a possible warning for pointer cast if the compiler warning 238level set very high. 239 240---------------------------------------- 24113 October 2009. Summary of changes for version 20091013: 242 2431) ACPI CA Core Subsystem: 244 245Fixed a problem where an Operation Region _REG method could be executed more 246than once. If a custom address space handler is installed by the host before 247the "initialize operation regions" phase of the ACPICA initialization, any 248_REG methods for that address space could be executed twice. This change 249fixes the problem. ACPICA BZ 427. Lin Ming. 250 251Fixed a possible memory leak for the Scope() ASL operator. When the exact 252invocation of "Scope(\)" is executed (change scope to root), one internal 253operand object was leaked. Lin Ming. 254 255Implemented a run-time repair for the _MAT predefined method. If the _MAT 256return value is defined as a Field object in the AML, and the field 257size is less than or equal to the default width of an integer (32 or 64),_MAT 258can incorrectly return an Integer instead of a Buffer. ACPICA now 259automatically repairs this problem. ACPICA BZ 810. 260 261Implemented a run-time repair for the _BIF and _BIX predefined methods. The 262"OEM Information" field is often incorrectly returned as an Integer with 263value zero if the field is not supported by the platform. This is due to an 264ambiguity in the ACPI specification. The field should always be a string. 265ACPICA now automatically repairs this problem by returning a NULL string 266within the returned Package. ACPICA BZ 807. 267 268Example Code and Data Size: These are the sizes for the OS-independent 269acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 270debug version of the code includes the debug output trace mechanism and has a 271much larger code and data size. 272 273 Previous Release: 274 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 275 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 276 Current Release: 277 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 278 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 279 2802) iASL Compiler/Disassembler and Tools: 281 282Disassembler: Fixed a problem where references to external symbols that 283contained one or more parent-prefixes (carats) were not handled correctly, 284possibly causing a fault. ACPICA BZ 806. Lin Ming. 285 286Disassembler: Restructured the code so that all functions that handle 287external symbols are in a single module. One new file is added, 288common/dmextern.c. 289 290AML Debugger: Added a max count argument for the Batch command (which 291executes multiple predefined methods within the namespace.) 292 293iASL: Updated the compiler documentation (User Reference.) Available at 294http://www.acpica.org/documentation/. ACPICA BZ 750. 295 296AcpiXtract: Updated for Lint and other formatting changes. Close all open 297files. 298 299---------------------------------------- 30003 September 2009. Summary of changes for version 20090903: 301 3021) ACPI CA Core Subsystem: 303 304For Windows Vista compatibility, added the automatic execution of an _INI 305method located at the namespace root (\_INI). This method is executed at 306table load time. This support is in addition to the automatic execution of 307\_SB._INI. Lin Ming. 308 309Fixed a possible memory leak in the interpreter for AML package objects if 310the package initializer list is longer than the defined size of the package. 311This apparently can only happen if the BIOS changes the package size on the 312fly (seen in a _PSS object), as ASL compilers do not allow this. The 313interpreter will truncate the package to the defined size (and issue an error 314message), but previously could leave the extra objects undeleted if they were 315pre-created during the argument processing (such is the case if the package 316consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805. 317 318Fixed a problem seen when a Buffer or String is stored to itself via ASL. 319This has been reported in the field. Previously, ACPICA would zero out the 320buffer/string. Now, the operation is treated as a noop. Provides Windows 321compatibility. ACPICA BZ 803. Lin Ming. 322 323Removed an extraneous error message for ASL constructs of the form 324Store(LocalX,LocalX) when LocalX is uninitialized. These curious statements 325are seen in many BIOSs and are once again treated as NOOPs and no error is 326emitted when they are encountered. ACPICA BZ 785. 327 328Fixed an extraneous warning message if a _DSM reserved method returns a 329Package object. _DSM can return any type of object, so validation on the 330return type cannot be performed. ACPICA BZ 802. 331 332Example Code and Data Size: These are the sizes for the OS-independent 333acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 334debug version of the code includes the debug output trace mechanism and has a 335much larger code and data size. 336 337 Previous Release: 338 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 339 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 340 Current Release: 341 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 342 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 343 3442) iASL Compiler/Disassembler and Tools: 345 346iASL: Fixed a problem with the use of the Alias operator and Resource 347Templates. The correct alias is now constructed and no error is emitted. 348ACPICA BZ 738. 349 350iASL: Implemented the -I option to specify additional search directories for 351include files. Allows multiple additional search paths for include files. 352Directories are searched in the order specified on the command line (after 353the local directory is searched.) ACPICA BZ 800. 354 355iASL: Fixed a problem where the full pathname for include files was not 356emitted for warnings/errors. This caused the IDE support to not work 357properly. ACPICA BZ 765. 358 359iASL: Implemented the -@ option to specify a Windows-style response file 360containing additional command line options. ACPICA BZ 801. 361 362AcpiExec: Added support to load multiple AML files simultaneously (such as a 363DSDT and multiple SSDTs). Also added support for wildcards within the AML 364pathname. These features allow all machine tables to be easily loaded and 365debugged together. ACPICA BZ 804. 366 367Disassembler: Added missing support for disassembly of HEST table Error Bank 368subtables. 369 370---------------------------------------- 37130 July 2009. Summary of changes for version 20090730: 372 373The ACPI 4.0 implementation for ACPICA is complete with this release. 374 3751) ACPI CA Core Subsystem: 376 377ACPI 4.0: Added header file support for all new and changed ACPI tables. 378Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are new 379for ACPI 4.0, but have previously been supported in ACPICA are: CPEP, BERT, 380EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT. There 381have been some ACPI 4.0 changes to other existing tables. Split the large 382actbl1.h header into the existing actbl2.h header. ACPICA BZ 774. 383 384ACPI 4.0: Implemented predefined name validation for all new names. There are 38531 new names in ACPI 4.0. The predefined validation module was split into two 386files. The new file is namespace/nsrepair.c. ACPICA BZ 770. 387 388Implemented support for so-called "module-level executable code". This is 389executable AML code that exists outside of any control method and is intended 390to be executed at table load time. Although illegal since ACPI 2.0, this type 391of code still exists and is apparently still being created. Blocks of this 392code are now detected and executed as intended. Currently, the code blocks 393must exist under either an If, Else, or While construct; these are the 394typical cases seen in the field. ACPICA BZ 762. Lin Ming. 395 396Implemented an automatic dynamic repair for predefined names that return 397nested Package objects. This applies to predefined names that are defined to 398return a variable-length Package of sub-packages. If the number of sub- 399packages is one, BIOS code is occasionally seen that creates a simple single 400package with no sub-packages. This code attempts to fix the problem by 401wrapping a new package object around the existing package. These methods can 402be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA BZ 403790. 404 405Fixed a regression introduced in 20090625 for the AcpiGetDevices interface. 406The _HID/_CID matching was broken and no longer matched IDs correctly. ACPICA 407BZ 793. 408 409Fixed a problem with AcpiReset where the reset would silently fail if the 410register was one of the protected I/O ports. AcpiReset now bypasses the port 411validation mechanism. This may eventually be driven into the AcpiRead/Write 412interfaces. 413 414Fixed a regression related to the recent update of the AcpiRead/Write 415interfaces. A sleep/suspend could fail if the optional PM2 Control register 416does not exist during an attempt to write the Bus Master Arbitration bit. 417(However, some hosts already delete the code that writes this bit, and the 418code may in fact be obsolete at this date.) ACPICA BZ 799. 419 420Fixed a problem where AcpiTerminate could fault if inadvertently called twice 421in succession. ACPICA BZ 795. 422 423Example Code and Data Size: These are the sizes for the OS-independent 424acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 425debug version of the code includes the debug output trace mechanism and has a 426much larger code and data size. 427 428 Previous Release: 429 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 430 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 431 Current Release: 432 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 433 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 434 4352) iASL Compiler/Disassembler and Tools: 436 437ACPI 4.0: Implemented disassembler support for all new ACPI tables and 438changes to existing tables. ACPICA BZ 775. 439 440---------------------------------------- 44125 June 2009. Summary of changes for version 20090625: 442 443The ACPI 4.0 Specification was released on June 16 and is available at 444www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will 445continue for the next few releases. 446 4471) ACPI CA Core Subsystem: 448 449ACPI 4.0: Implemented interpreter support for the IPMI operation region 450address space. Includes support for bi-directional data buffers and an IPMI 451address space handler (to be installed by an IPMI device driver.) ACPICA BZ 452773. Lin Ming. 453 454ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. Includes 455support in both the header files and the disassembler. 456 457Completed a major update for the AcpiGetObjectInfo external interface. 458Changes include: 459 - Support for variable, unlimited length HID, UID, and CID strings. 460 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, etc.) 461 - Call the _SxW power methods on behalf of a device object. 462 - Determine if a device is a PCI root bridge. 463 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO. 464These changes will require an update to all callers of this interface. See 465the updated ACPICA Programmer Reference for details. One new source file has 466been added - utilities/utids.c. ACPICA BZ 368, 780. 467 468Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit 469transfers. The Value parameter has been extended from 32 bits to 64 bits in 470order to support new ACPI 4.0 tables. These changes will require an update to 471all callers of these interfaces. See the ACPICA Programmer Reference for 472details. ACPICA BZ 768. 473 474Fixed several problems with AcpiAttachData. The handler was not invoked when 475the host node was deleted. The data sub-object was not automatically deleted 476when the host node was deleted. The interface to the handler had an unused 477parameter, this was removed. ACPICA BZ 778. 478 479Enhanced the function that dumps ACPI table headers. All non-printable 480characters in the string fields are now replaced with '?' (Signature, OemId, 481OemTableId, and CompilerId.) ACPI tables with non-printable characters in 482these fields are occasionally seen in the field. ACPICA BZ 788. 483 484Fixed a problem with predefined method repair code where the code that 485attempts to repair/convert an object of incorrect type is only executed on 486the first time the predefined method is called. The mechanism that disables 487warnings on subsequent calls was interfering with the repair mechanism. 488ACPICA BZ 781. 489 490Fixed a possible memory leak in the predefined validation/repair code when a 491buffer is automatically converted to an expected string object. 492 493Removed obsolete 16-bit files from the distribution and from the current git 494tree head. ACPICA BZ 776. 495 496Example Code and Data Size: These are the sizes for the OS-independent 497acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 498debug version of the code includes the debug output trace mechanism and has a 499much larger code and data size. 500 501 Previous Release: 502 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 503 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 504 Current Release: 505 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 506 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 507 5082) iASL Compiler/Disassembler and Tools: 509 510ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI 511operation region keyword. ACPICA BZ 771, 772. Lin Ming. 512 513ACPI 4.0: iASL - implemented compile-time validation support for all new 514predefined names and control methods (31 total). ACPICA BZ 769. 515 516---------------------------------------- 51721 May 2009. Summary of changes for version 20090521: 518 5191) ACPI CA Core Subsystem: 520 521Disabled the preservation of the SCI enable bit in the PM1 control register. 522The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification to be 523a "preserved" bit - "OSPM always preserves this bit position", section 5244.7.3.2.1. However, some machines fail if this bit is in fact preserved 525because the bit needs to be explicitly set by the OS as a workaround. No 526machines fail if the bit is not preserved. Therefore, ACPICA no longer 527attempts to preserve this bit. 528 529Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or 530incorrectly formed _PRT package could cause a fault. Added validation to 531ensure that each package element is actually a sub-package. 532 533Implemented a new interface to install or override a single control method, 534AcpiInstallMethod. This interface is useful when debugging in order to repair 535an existing method or to install a missing method without having to override 536the entire ACPI table. See the ACPICA Programmer Reference for use and 537examples. Lin Ming, Bob Moore. 538 539Fixed several reference count issues with the DdbHandle object that is 540created from a Load or LoadTable operator. Prevent premature deletion of the 541object. Also, mark the object as invalid once the table has been unloaded. 542This is needed because the handle itself may not be deleted after the table 543unload, depending on whether it has been stored in a named object by the 544caller. Lin Ming. 545 546Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple 547mutexes of the same sync level are acquired but then not released in strict 548opposite order, the internally maintained Current Sync Level becomes confused 549and can cause subsequent execution errors. ACPICA BZ 471. 550 551Changed the allowable release order for ASL mutex objects. The ACPI 4.0 552specification has been changed to make the SyncLevel for mutex objects more 553useful. When releasing a mutex, the SyncLevel of the mutex must now be the 554same as the current sync level. This makes more sense than the previous rule 555(SyncLevel less than or equal). This change updates the code to match the 556specification. 557 558Fixed a problem with the local version of the AcpiOsPurgeCache function. The 559(local) cache must be locked during all cache object deletions. Andrew 560Baumann. 561 562Updated the Load operator to use operation region interfaces. This replaces 563direct memory mapping with region access calls. Now, all region accesses go 564through the installed region handler as they should. 565 566Simplified and optimized the NsGetNextNode function. Reduced parameter count 567and reduced code for this frequently used function. 568 569Example Code and Data Size: These are the sizes for the OS-independent 570acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 571debug version of the code includes the debug output trace mechanism and has a 572much larger code and data size. 573 574 Previous Release: 575 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 576 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 577 Current Release: 578 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 579 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 580 5812) iASL Compiler/Disassembler and Tools: 582 583Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some problems 584with sub-table disassembly and handling invalid sub-tables. Attempt recovery 585after an invalid sub-table ID. 586 587---------------------------------------- 58822 April 2009. Summary of changes for version 20090422: 589 5901) ACPI CA Core Subsystem: 591 592Fixed a compatibility issue with the recently released I/O port protection 593mechanism. For windows compatibility, 1) On a port protection violation, 594simply ignore the request and do not return an exception (allow the control 595method to continue execution.) 2) If only part of the request overlaps a 596protected port, read/write the individual ports that are not protected. Linux 597BZ 13036. Lin Ming 598 599Enhanced the execution of the ASL/AML BreakPoint operator so that it actually 600breaks into the AML debugger if the debugger is present. This matches the 601ACPI-defined behavior. 602 603Fixed several possible warnings related to the use of the configurable 604ACPI_THREAD_ID. This type can now be configured as either an integer or a 605pointer with no warnings. Also fixes several warnings in printf-like 606statements for the 64-bit build when the type is configured as a pointer. 607ACPICA BZ 766, 767. 608 609Fixed a number of possible warnings when compiling with gcc 4+ (depending on 610warning options.) Examples include printf formats, aliasing, unused globals, 611missing prototypes, missing switch default statements, use of non-ANSI 612library functions, use of non-ANSI constructs. See generate/unix/Makefile for 613a list of warning options used with gcc 3 and 4. ACPICA BZ 735. 614 615Example Code and Data Size: These are the sizes for the OS-independent 616acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 617debug version of the code includes the debug output trace mechanism and has a 618much larger code and data size. 619 620 Previous Release: 621 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 622 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 623 Current Release: 624 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 625 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 626 6272) iASL Compiler/Disassembler and Tools: 628 629iASL: Fixed a generation warning from Bison 2.3 and fixed several warnings on 630the 64-bit build. 631 632iASL: Fixed a problem where the Unix/Linux versions of the compiler could not 633correctly digest Windows/DOS formatted files (with CR/LF). 634 635iASL: Added a new option for "quiet mode" (-va) that produces only the 636compilation summary, not individual errors and warnings. Useful for large 637batch compilations. 638 639AcpiExec: Implemented a new option (-z) to enable a forced semaphore/mutex 640timeout that can be used to detect hang conditions during execution of AML 641code (includes both internal semaphores and AML-defined mutexes and events.) 642 643Added new makefiles for the generation of acpica in a generic unix-like 644environment. These makefiles are intended to generate the acpica tools and 645utilities from the original acpica git source tree structure. 646 647Test Suites: Updated and cleaned up the documentation files. Updated the 648copyrights to 2009, affecting all source files. Use the new version of iASL 649with quiet mode. Increased the number of available semaphores in the Windows 650OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, added 651an alternate implementation of the semaphore timeout to allow aslts to 652execute fully on Cygwin. 653 654---------------------------------------- 65520 March 2009. Summary of changes for version 20090320: 656 6571) ACPI CA Core Subsystem: 658 659Fixed a possible race condition between AcpiWalkNamespace and dynamic table 660unloads. Added a reader/writer locking mechanism to allow multiple concurrent 661namespace walks (readers), but block a dynamic table unload until it can gain 662exclusive write access to the namespace. This fixes a problem where a table 663unload could (possibly catastrophically) delete the portion of the namespace 664that is currently being examined by a walk. Adds a new file, utlock.c, that 665implements the reader/writer lock mechanism. ACPICA BZ 749. 666 667Fixed a regression introduced in version 20090220 where a change to the FADT 668handling could cause the ACPICA subsystem to access non-existent I/O ports. 669 670Modified the handling of FADT register and table (FACS/DSDT) addresses. The 671FADT can contain both 32-bit and 64-bit versions of these addresses. 672Previously, the 64-bit versions were favored, meaning that if both 32 and 64 673versions were valid, but not equal, the 64-bit version was used. This was 674found to cause some machines to fail. Now, in this case, the 32-bit version 675is used instead. This now matches the Windows behavior. 676 677Implemented a new mechanism to protect certain I/O ports. Provides Microsoft 678compatibility and protects the standard PC I/O ports from access via AML 679code. Adds a new file, hwvalid.c 680 681Fixed a possible extraneous warning message from the FADT support. The 682message warns of a 32/64 length mismatch between the legacy and GAS 683definitions for a register. 684 685Removed the obsolete AcpiOsValidateAddress OSL interface. This interface is 686made obsolete by the port protection mechanism above. It was previously used 687to validate the entire address range of an operation region, which could be 688incorrect if the range included illegal ports, but fields within the 689operation region did not actually access those ports. Validation is now 690performed on a per-field basis instead of the entire region. 691 692Modified the handling of the PM1 Status Register ignored bit (bit 11.) 693Ignored bits must be "preserved" according to the ACPI spec. Usually, this 694means a read/modify/write when writing to the register. However, for status 695registers, writing a one means clear the event. Writing a zero means preserve 696the event (do not clear.) This behavior is clarified in the ACPI 4.0 spec, 697and the ACPICA code now simply always writes a zero to the ignored bit. 698 699Modified the handling of ignored bits for the PM1 A/B Control Registers. As 700per the ACPI specification, for the control registers, preserve 701(read/modify/write) all bits that are defined as either reserved or ignored. 702 703Updated the handling of write-only bits in the PM1 A/B Control Registers. 704When reading the register, zero the write-only bits as per the ACPI spec. 705ACPICA BZ 443. Lin Ming. 706 707Removed "Linux" from the list of supported _OSI strings. Linux no longer 708wants to reply true to this request. The Windows strings are the only paths 709through the AML that are tested and known to work properly. 710 711 Previous Release: 712 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 713 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 714 Current Release: 715 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 716 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 717 7182) iASL Compiler/Disassembler and Tools: 719 720Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c and 721aetables.c 722 723---------------------------------------- 72420 February 2009. Summary of changes for version 20090220: 725 7261) ACPI CA Core Subsystem: 727 728Optimized the ACPI register locking. Removed locking for reads from the ACPI 729bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock is 730not required when reading the single-bit registers. The 731AcpiGetRegisterUnlocked function is no longer needed and has been removed. 732This will improve performance for reads on these registers. ACPICA BZ 760. 733 734Fixed the parameter validation for AcpiRead/Write. Now return 735AE_BAD_PARAMETER if the input register pointer is null, and AE_BAD_ADDRESS if 736the register has an address of zero. Previously, these cases simply returned 737AE_OK. For optional registers such as PM1B status/enable/control, the caller 738should check for a valid register address before calling. ACPICA BZ 748. 739 740Renamed the external ACPI bit register access functions. Renamed 741AcpiGetRegister and AcpiSetRegister to clarify the purpose of these 742functions. The new names are AcpiReadBitRegister and AcpiWriteBitRegister. 743Also, restructured the code for these functions by simplifying the code path 744and condensing duplicate code to reduce code size. 745 746Added new functions to transparently handle the possibly split PM1 A/B 747registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two functions 748now handle the split registers for PM1 Status, Enable, and Control. ACPICA BZ 749746. 750 751Added a function to handle the PM1 control registers, AcpiHwWritePm1Control. 752This function writes both of the PM1 control registers (A/B). These registers 753are different than the PM1 A/B status and enable registers in that different 754values can be written to the A/B registers. Most notably, the SLP_TYP bits 755can be different, as per the values returned from the _Sx predefined methods. 756 757Removed an extra register write within AcpiHwClearAcpiStatus. This function 758was writing an optional PM1B status register twice. The existing call to the 759low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 A/B 760register. ACPICA BZ 751. 761 762Split out the PM1 Status registers from the FADT. Added new globals for these 763registers (A/B), similar to the way the PM1 Enable registers are handled. 764Instead of overloading the FADT Event Register blocks. This makes the code 765clearer and less prone to error. 766 767Fixed the warning message for when the platform contains too many ACPI tables 768for the default size of the global root table data structure. The calculation 769for the truncation value was incorrect. 770 771Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this 772obsolete macro, since it is now a simple reference to ->common.type. There 773were about 150 invocations of the macro across 41 files. ACPICA BZ 755. 774 775Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as 776TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to 777simply SLEEP_TYPE. ACPICA BZ 754. 778 779Conditionally compile the AcpiSetFirmwareWakingVector64 function. This 780function is only needed on 64-bit host operating systems and is thus not 781included for 32-bit hosts. 782 783Debug output: print the input and result for invocations of the _OSI reserved 784control method via the ACPI_LV_INFO debug level. Also, reduced some of the 785verbosity of this debug level. Len Brown. 786 787Example Code and Data Size: These are the sizes for the OS-independent 788acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 789debug version of the code includes the debug output trace mechanism and has a 790much larger code and data size. 791 792 Previous Release: 793 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 794 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 795 Current Release: 796 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 797 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 798 7992) iASL Compiler/Disassembler and Tools: 800 801Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the 802various legal performance profiles. 803 804---------------------------------------- 80523 January 2009. Summary of changes for version 20090123: 806 8071) ACPI CA Core Subsystem: 808 809Added the 2009 copyright to all module headers and signons. This affects 810virtually every file in the ACPICA core subsystem, the iASL compiler, and 811the tools/utilities. 812 813Implemented a change to allow the host to override any ACPI table, including 814dynamically loaded tables. Previously, only the DSDT could be replaced by the 815host. With this change, the AcpiOsTableOverride interface is called for each 816table found in the RSDT/XSDT during ACPICA initialization, and also whenever 817a table is dynamically loaded via the AML Load operator. 818 819Updated FADT flag definitions, especially the Boot Architecture flags. 820 821Debugger: For the Find command, automatically pad the input ACPI name with 822underscores if the name is shorter than 4 characters. This enables a match 823with the actual namespace entry which is itself padded with underscores. 824 825Example Code and Data Size: These are the sizes for the OS-independent 826acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 827debug version of the code includes the debug output trace mechanism and has a 828much larger code and data size. 829 830 Previous Release: 831 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 832 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 833 Current Release: 834 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 835 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 836 8372) iASL Compiler/Disassembler and Tools: 838 839Fix build error under Bison-2.4. 840 841Dissasembler: Enhanced FADT support. Added decoding of the Boot Architecture 842flags. Now decode all flags, regardless of the FADT version. Flag output 843includes the FADT version which first defined each flag. 844 845The iASL -g option now dumps the RSDT to a file (in addition to the FADT and 846DSDT). Windows only. 847 848---------------------------------------- 84904 December 2008. Summary of changes for version 20081204: 850 8511) ACPI CA Core Subsystem: 852 853The ACPICA Programmer Reference has been completely updated and revamped for 854this release. This includes updates to the external interfaces, OSL 855interfaces, the overview sections, and the debugger reference. 856 857Several new ACPICA interfaces have been implemented and documented in the 858programmer reference: 859AcpiReset - Writes the reset value to the FADT-defined reset register. 860AcpiDisableAllGpes - Disable all available GPEs. 861AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs. 862AcpiGetGpeDevice - Get the GPE block device associated with a GPE. 863AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs. 864AcpiRead - Low-level read ACPI register (was HwLowLevelRead.) 865AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.) 866 867Most of the public ACPI hardware-related interfaces have been moved to a new 868file, components/hardware/hwxface.c 869 870Enhanced the FADT parsing and low-level ACPI register access: The ACPI 871register lengths within the FADT are now used, and the low level ACPI 872register access no longer hardcodes the ACPI register lengths. Given that 873there may be some risk in actually trusting the FADT register lengths, a run- 874time option was added to fall back to the default hardcoded lengths if the 875FADT proves to contain incorrect values - UseDefaultRegisterWidths. This 876option is set to true for now, and a warning is issued if a suspicious FADT 877register length is overridden with the default value. 878 879Fixed a reference count issue in NsRepairObject. This problem was introduced 880in version 20081031 as part of a fix to repair Buffer objects within 881Packages. Lin Ming. 882 883Added semaphore support to the Linux/Unix application OS-services layer 884(OSL). ACPICA BZ 448. Lin Ming. 885 886Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes will 887be implemented in the OSL, or will binary semaphores be used instead. 888 889Example Code and Data Size: These are the sizes for the OS-independent 890acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 891debug version of the code includes the debug output trace mechanism and has a 892much larger code and data size. 893 894 Previous Release: 895 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 896 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 897 Current Release: 898 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 899 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 900 9012) iASL Compiler/Disassembler and Tools: 902 903iASL: Completed the '-e' option to include additional ACPI tables in order to 904aid with disassembly and External statement generation. ACPICA BZ 742. Lin 905Ming. 906 907iASL: Removed the "named object in while loop" error. The compiler cannot 908determine how many times a loop will execute. ACPICA BZ 730. 909 910Disassembler: Implemented support for FADT revision 2 (MS extension). ACPICA 911BZ 743. 912 913Disassembler: Updates for several ACPI data tables (HEST, EINJ, and MCFG). 914 915---------------------------------------- 91631 October 2008. Summary of changes for version 20081031: 917 9181) ACPI CA Core Subsystem: 919 920Restructured the ACPICA header files into public/private. acpi.h now includes 921only the "public" acpica headers. All other acpica headers are "private" and 922should not be included by acpica users. One new file, accommon.h is used to 923include the commonly used private headers for acpica code generation. Future 924plans include moving all private headers to a new subdirectory. 925 926Implemented an automatic Buffer->String return value conversion for 927predefined ACPI methods. For these methods (such as _BIF), added automatic 928conversion for return objects that are required to be a String, but a Buffer 929was found instead. This can happen when reading string battery data from an 930operation region, because it used to be difficult to convert the data from 931buffer to string from within the ASL. Ensures that the host OS is provided 932with a valid null-terminated string. Linux BZ 11822. 933 934Updated the FACS waking vector interfaces. Split AcpiSetFirmwareWakingVector 935into two: one for the 32-bit vector, another for the 64-bit vector. This is 936required because the host OS must setup the wake much differently for each 937vector (real vs. protected mode, etc.) and the interface itself should not be 938deciding which vector to use. Also, eliminated the GetFirmwareWakingVector 939interface, as it served no purpose (only the firmware reads the vector, OS 940only writes the vector.) ACPICA BZ 731. 941 942Implemented a mechanism to escape infinite AML While() loops. Added a loop 943counter to force exit from AML While loops if the count becomes too large. 944This can occur in poorly written AML when the hardware does not respond 945within a while loop and the loop does not implement a timeout. The maximum 946loop count is configurable. A new exception code is returned when a loop is 947broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore. 948 949Optimized the execution of AML While loops. Previously, a control state 950object was allocated and freed for each execution of the loop. The 951optimization is to simply reuse the control state for each iteration. This 952speeds up the raw loop execution time by about 5%. 953 954Enhanced the implicit return mechanism. For Windows compatibility, return an 955implicit integer of value zero for methods that contain no executable code. 956Such methods are seen in the field as stubs (presumably), and can cause 957drivers to fail if they expect a return value. Lin Ming. 958 959Allow multiple backslashes as root prefixes in namepaths. In a fully 960qualified namepath, allow multiple backslash prefixes. This can happen (and 961is seen in the field) because of the use of a double-backslash in strings 962(since backslash is the escape character) causing confusion. ACPICA BZ 739 963Lin Ming. 964 965Emit a warning if two different FACS or DSDT tables are discovered in the 966FADT. Checks if there are two valid but different addresses for the FACS and 967DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.) 968 969Consolidated the method argument count validation code. Merged the code that 970validates control method argument counts into the predefined validation 971module. Eliminates possible multiple warnings for incorrect argument counts. 972 973Implemented ACPICA example code. Includes code for ACPICA initialization, 974handler installation, and calling a control method. Available at 975source/tools/examples. 976 977Added a global pointer for FACS table to simplify internal FACS access. Use 978the global pointer instead of using AcpiGetTableByIndex for each FACS access. 979This simplifies the code for the Global Lock and the Firmware Waking 980Vector(s). 981 982Example Code and Data Size: These are the sizes for the OS-independent 983acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 984debug version of the code includes the debug output trace mechanism and has a 985much larger code and data size. 986 987 Previous Release: 988 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 989 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 990 Current Release: 991 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 992 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 993 9942) iASL Compiler/Disassembler and Tools: 995 996iASL: Improved disassembly of external method calls. Added the -e option to 997allow the inclusion of additional ACPI tables to help with the disassembly of 998method invocations and the generation of external declarations during the 999disassembly. Certain external method invocations cannot be disassembled 1000properly without the actual declaration of the method. Use the -e option to 1001include the table where the external method(s) are actually declared. Most 1002useful for disassembling SSDTs that make method calls back to the master 1003DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl -d 1004-e dsdt.aml ssdt1.aml 1005 1006iASL: Fix to allow references to aliases within ASL namepaths. Fixes a 1007problem where the use of an alias within a namepath would result in a not 1008found error or cause the compiler to fault. Also now allows forward 1009references from the Alias operator itself. ACPICA BZ 738. 1010 1011---------------------------------------- 101226 September 2008. Summary of changes for version 20080926: 1013 10141) ACPI CA Core Subsystem: 1015 1016Designed and implemented a mechanism to validate predefined ACPI methods and 1017objects. This code validates the predefined ACPI objects (objects whose names 1018start with underscore) that appear in the namespace, at the time they are 1019evaluated. The argument count and the type of the returned object are 1020validated against the ACPI specification. The purpose of this validation is 1021to detect problems with the BIOS-implemented predefined ACPI objects before 1022the results are returned to the ACPI-related drivers. Future enhancements may 1023include actual repair of incorrect return objects where possible. Two new 1024files are nspredef.c and acpredef.h. 1025 1026Fixed a fault in the AML parser if a memory allocation fails during the Op 1027completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492. 1028 1029Fixed an issue with implicit return compatibility. This change improves the 1030implicit return mechanism to be more compatible with the MS interpreter. Lin 1031Ming, ACPICA BZ 349. 1032 1033Implemented support for zero-length buffer-to-string conversions. Allow zero 1034length strings during interpreter buffer-to-string conversions. For example, 1035during the ToDecimalString and ToHexString operators, as well as implicit 1036conversions. Fiodor Suietov, ACPICA BZ 585. 1037 1038Fixed two possible memory leaks in the error exit paths of 1039AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions are 1040similar in that they use a stack of state objects in order to eliminate 1041recursion. The stack must be fully unwound and deallocated if an error 1042occurs. Lin Ming. ACPICA BZ 383. 1043 1044Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the global 1045ACPI register table. This bit does not exist and is unused. Lin Ming, Bob 1046Moore ACPICA BZ 442. 1047 1048Removed the obsolete version number in module headers. Removed the 1049"$Revision" number that appeared in each module header. This version number 1050was useful under SourceSafe and CVS, but has no meaning under git. It is not 1051only incorrect, it could also be misleading. 1052 1053Example Code and Data Size: These are the sizes for the OS-independent 1054acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1055debug version of the code includes the debug output trace mechanism and has a 1056much larger code and data size. 1057 1058 Previous Release: 1059 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 1060 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 1061 Current Release: 1062 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 1063 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 1064 1065---------------------------------------- 106629 August 2008. Summary of changes for version 20080829: 1067 10681) ACPI CA Core Subsystem: 1069 1070Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type 1071Reference. Changes include the elimination of cheating on the Object field 1072for the DdbHandle subtype, addition of a reference class field to 1073differentiate the various reference types (instead of an AML opcode), and the 1074cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723 1075 1076Reduce an error to a warning for an incorrect method argument count. 1077Previously aborted with an error if too few arguments were passed to a 1078control method via the external ACPICA interface. Now issue a warning instead 1079and continue. Handles the case where the method inadvertently declares too 1080many arguments, but does not actually use the extra ones. Applies mainly to 1081the predefined methods. Lin Ming. Linux BZ 11032. 1082 1083Disallow the evaluation of named object types with no intrinsic value. Return 1084AE_TYPE for objects that have no value and therefore evaluation is undefined: 1085Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation of 1086these types were allowed, but an exception would be generated at some point 1087during the evaluation. Now, the error is generated up front. 1088 1089Fixed a possible memory leak in the AcpiNsGetExternalPathname function 1090(nsnames.c). Fixes a leak in the error exit path. 1091 1092Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These debug 1093levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and ACPI_EXCEPTION 1094interfaces. Also added ACPI_DB_EVENTS to correspond with the existing 1095ACPI_LV_EVENTS. 1096 1097Removed obsolete and/or unused exception codes from the acexcep.h header. 1098There is the possibility that certain device drivers may be affected if they 1099use any of these exceptions. 1100 1101The ACPICA documentation has been added to the public git source tree, under 1102acpica/documents. Included are the ACPICA programmer reference, the iASL 1103compiler reference, and the changes.txt release logfile. 1104 1105Example Code and Data Size: These are the sizes for the OS-independent 1106acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1107debug version of the code includes the debug output trace mechanism and has a 1108much larger code and data size. 1109 1110 Previous Release: 1111 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 1112 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 1113 Current Release: 1114 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 1115 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 1116 11172) iASL Compiler/Disassembler and Tools: 1118 1119Allow multiple argument counts for the predefined _SCP method. ACPI 3.0 1120defines _SCP with 3 arguments. Previous versions defined it with only 1 1121argument. iASL now allows both definitions. 1122 1123iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for zero- 1124length subtables when disassembling ACPI tables. Also fixed a couple of 1125errors where a full 16-bit table type field was not extracted from the input 1126properly. 1127 1128acpisrc: Improve comment counting mechanism for generating source code 1129statistics. Count first and last lines of multi-line comments as whitespace, 1130not comment lines. Handle Linux legal header in addition to standard acpica 1131header. 1132 1133---------------------------------------- 1134 113529 July 2008. Summary of changes for version 20080729: 1136 11371) ACPI CA Core Subsystem: 1138 1139Fix a possible deadlock in the GPE dispatch. Remove call to 1140AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will attempt 1141to acquire the GPE lock but can deadlock since the GPE lock is already held 1142at dispatch time. This code was introduced in version 20060831 as a response 1143to Linux BZ 6881 and has since been removed from Linux. 1144 1145Add a function to dereference returned reference objects. Examines the return 1146object from a call to AcpiEvaluateObject. Any Index or RefOf references are 1147automatically dereferenced in an attempt to return something useful (these 1148reference types cannot be converted into an external ACPI_OBJECT.) Provides 1149MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105 1150 1151x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new 1152subtables for the MADT and one new subtable for the SRAT. Includes 1153disassembler and AcpiSrc support. Data from the Intel 64 Architecture x2APIC 1154Specification, June 2008. 1155 1156Additional error checking for pathname utilities. Add error check after all 1157calls to AcpiNsGetPathnameLength. Add status return from 1158AcpiNsBuildExternalPath and check after all calls. Add parameter validation 1159to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar. 1160 1161Return status from the global init function AcpiUtGlobalInitialize. This is 1162used by both the kernel subsystem and the utilities such as iASL compiler. 1163The function could possibly fail when the caches are initialized. Yang Yi. 1164 1165Add a function to decode reference object types to strings. Created for 1166improved error messages. 1167 1168Improve object conversion error messages. Better error messages during object 1169conversion from internal to the external ACPI_OBJECT. Used for external calls 1170to AcpiEvaluateObject. 1171 1172Example Code and Data Size: These are the sizes for the OS-independent 1173acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1174debug version of the code includes the debug output trace mechanism and has a 1175much larger code and data size. 1176 1177 Previous Release: 1178 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 1179 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 1180 Current Release: 1181 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 1182 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 1183 11842) iASL Compiler/Disassembler and Tools: 1185 1186Debugger: fix a possible hang when evaluating non-methods. Fixes a problem 1187introduced in version 20080701. If the object being evaluated (via execute 1188command) is not a method, the debugger can hang while trying to obtain non- 1189existent parameters. 1190 1191iASL: relax error for using reserved "_T_x" identifiers. These names can 1192appear in a disassembled ASL file if they were emitted by the original 1193compiler. Instead of issuing an error or warning and forcing the user to 1194manually change these names, issue a remark instead. 1195 1196iASL: error if named object created in while loop. Emit an error if any named 1197object is created within a While loop. If allowed, this code will generate a 1198run-time error on the second iteration of the loop when an attempt is made to 1199create the same named object twice. ACPICA bugzilla 730. 1200 1201iASL: Support absolute pathnames for include files. Add support for absolute 1202pathnames within the Include operator. previously, only relative pathnames 1203were supported. 1204 1205iASL: Enforce minimum 1 interrupt in interrupt macro and Resource Descriptor. 1206The ACPI spec requires one interrupt minimum. BZ 423 1207 1208iASL: Handle a missing ResourceSource arg, with a present SourceIndex. 1209Handles the case for the Interrupt Resource Descriptor where 1210the ResourceSource argument is omitted but ResourceSourceIndex 1211is present. Now leave room for the Index. BZ 426 1212 1213iASL: Prevent error message if CondRefOf target does not exist. Fixes cases 1214where an error message is emitted if the target does not exist. BZ 516 1215 1216iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option 1217(get ACPI tables on Windows). This was apparently broken in version 20070919. 1218 1219AcpiXtract: Handle EOF while extracting data. Correctly handle the case where 1220the EOF happens immediately after the last table in the input file. Print 1221completion message. Previously, no message was displayed in this case. 1222 1223---------------------------------------- 122401 July 2008. Summary of changes for version 20080701: 1225 12260) Git source tree / acpica.org 1227 1228Fixed a problem where a git-clone from http would not transfer the entire 1229source tree. 1230 12311) ACPI CA Core Subsystem: 1232 1233Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one 1234enable bit. Now performs a read-change-write of the enable register instead 1235of simply writing out the cached enable mask. This will prevent inadvertent 1236enabling of GPEs if a rogue GPE is received during initialization (before GPE 1237handlers are installed.) 1238 1239Implemented a copy for dynamically loaded tables. Previously, dynamically 1240loaded tables were simply mapped - but on some machines this memory is 1241corrupted after suspend. Now copy the table to a local buffer. For the 1242OpRegion case, added checksum verify. Use the table length from the table 1243header, not the region length. For the Buffer case, use the table length 1244also. Dennis Noordsij, Bob Moore. BZ 10734 1245 1246Fixed a problem where the same ACPI table could not be dynamically loaded and 1247unloaded more than once. Without this change, a table cannot be loaded again 1248once it has been loaded/unloaded one time. The current mechanism does not 1249unregister a table upon an unload. During a load, if the same table is found, 1250this no longer returns an exception. BZ 722 1251 1252Fixed a problem where the wrong descriptor length was calculated for the 1253EndTag descriptor in 64-bit mode. The "minimal" descriptors such as EndTag 1254are calculated as 12 bytes long, but the actual length in the internal 1255descriptor is 16 because of the round-up to 8 on the 64-bit build. Reported 1256by Linn Crosetto. BZ 728 1257 1258Fixed a possible memory leak in the Unload operator. The DdbHandle returned 1259by Load() did not have its reference count decremented during unload, leading 1260to a memory leak. Lin Ming. BZ 727 1261 1262Fixed a possible memory leak when deleting thermal/processor objects. Any 1263associated notify handlers (and objects) were not being deleted. Fiodor 1264Suietov. BZ 506 1265 1266Fixed the ordering of the ASCII names in the global mutex table to match the 1267actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug only. 1268Vegard Nossum. BZ 726 1269 1270Enhanced the AcpiGetObjectInfo interface to return the number of required 1271arguments if the object is a control method. Added this call to the debugger 1272so the proper number of default arguments are passed to a method. This 1273prevents a warning when executing methods from AcpiExec. 1274 1275Added a check for an invalid handle in AcpiGetObjectInfo. Return 1276AE_BAD_PARAMETER if input handle is invalid. BZ 474 1277 1278Fixed an extraneous warning from exconfig.c on the 64-bit build. 1279 1280Example Code and Data Size: These are the sizes for the OS-independent 1281acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1282debug version of the code includes the debug output trace mechanism and has a 1283much larger code and data size. 1284 1285 Previous Release: 1286 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 1287 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 1288 Current Release: 1289 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 1290 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 1291 12922) iASL Compiler/Disassembler and Tools: 1293 1294iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both 1295resource descriptor names. 1296 1297iASL: Detect invalid ASCII characters in input (windows version). Removed the 1298"-CF" flag from the flex compile, enables correct detection of non-ASCII 1299characters in the input. BZ 441 1300 1301iASL: Eliminate warning when result of LoadTable is not used. Eliminate the 1302"result of operation not used" warning when the DDB handle returned from 1303LoadTable is not used. The warning is not needed. BZ 590 1304 1305AcpiExec: Add support for dynamic table load/unload. Now calls _CFG method to 1306pass address of table to the AML. Added option to disable OpRegion simulation 1307to allow creation of an OpRegion with a real address that was passed to _CFG. 1308All of this allows testing of the Load and Unload operators from AcpiExec. 1309 1310Debugger: update tables command for unloaded tables. Handle unloaded tables 1311and use the standard table header output routine. 1312 1313---------------------------------------- 131409 June 2008. Summary of changes for version 20080609: 1315 13161) ACPI CA Core Subsystem: 1317 1318Implemented a workaround for reversed _PRT entries. A significant number of 1319BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This 1320change dynamically detects and repairs this problem. Provides compatibility 1321with MS ACPI. BZ 6859 1322 1323Simplified the internal ACPI hardware interfaces to eliminate the locking 1324flag parameter from Register Read/Write. Added a new external interface, 1325AcpiGetRegisterUnlocked. 1326 1327Fixed a problem where the invocation of a GPE control method could hang. This 1328was a regression introduced in 20080514. The new method argument count 1329validation mechanism can enter an infinite loop when a GPE method is 1330dispatched. Problem fixed by removing the obsolete code that passed GPE block 1331information to the notify handler via the control method parameter pointer. 1332 1333Fixed a problem where the _SST execution status was incorrectly returned to 1334the caller of AcpiEnterSleepStatePrep. This was a regression introduced in 133520080514. _SST is optional and a NOT_FOUND exception should never be 1336returned. BZ 716 1337 1338Fixed a problem where a deleted object could be accessed from within the AML 1339parser. This was a regression introduced in version 20080123 as a fix for the 1340Unload operator. Lin Ming. BZ 10669 1341 1342Cleaned up the debug operand dump mechanism. Eliminated unnecessary operands 1343and eliminated the use of a negative index in a loop. Operands are now 1344displayed in the correct order, not backwards. This also fixes a regression 1345introduced in 20080514 on 64-bit systems where the elimination of 1346ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 715 1347 1348Fixed a possible memory leak in EvPciConfigRegionSetup where the error exit 1349path did not delete a locally allocated structure. 1350 1351Updated definitions for the DMAR and SRAT tables to synchronize with the 1352current specifications. Includes disassembler support. 1353 1354Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect 1355loop termination value was used. Loop terminated on iteration early, missing 1356one mutex. Linn Crosetto 1357 1358Example Code and Data Size: These are the sizes for the OS-independent 1359acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1360debug version of the code includes the debug output trace mechanism and has a 1361much larger code and data size. 1362 1363 Previous Release: 1364 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 1365 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 1366 Current Release: 1367 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 1368 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 1369 13702) iASL Compiler/Disassembler and Tools: 1371 1372Disassembler: Implemented support for EisaId() within _CID objects. Now 1373disassemble integer _CID objects back to EisaId invocations, including 1374multiple integers within _CID packages. Includes single-step support for 1375debugger also. 1376 1377Disassembler: Added support for DMAR and SRAT table definition changes. 1378 1379---------------------------------------- 138014 May 2008. Summary of changes for version 20080514: 1381 13821) ACPI CA Core Subsystem: 1383 1384Fixed a problem where GPEs were enabled too early during the ACPICA 1385initialization. This could lead to "handler not installed" errors on some 1386machines. Moved GPE enable until after _REG/_STA/_INI methods are run. This 1387ensures that all operation regions and devices throughout the namespace have 1388been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916. 1389 1390Implemented a change to the enter sleep code. Moved execution of the _GTS 1391method to just before setting sleep enable bit. The execution was moved from 1392AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed 1393immediately before the SLP_EN bit is set, as per the ACPI specification. 1394Luming Yu, BZ 1653. 1395 1396Implemented a fix to disable unknown GPEs (2nd version). Now always disable 1397the GPE, even if ACPICA thinks that that it is already disabled. It is 1398possible that the AML or some other code has enabled the GPE unbeknownst to 1399the ACPICA code. 1400 1401Fixed a problem with the Field operator where zero-length fields would return 1402an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length ASL 1403field declarations in Field(), BankField(), and IndexField(). BZ 10606. 1404 1405Implemented a fix for the Load operator, now load the table at the namespace 1406root. This reverts a change introduced in version 20071019. The table is now 1407loaded at the namespace root even though this goes against the ACPI 1408specification. This provides compatibility with other ACPI implementations. 1409The ACPI specification will be updated to reflect this in ACPI 4.0. Lin Ming. 1410 1411Fixed a problem where ACPICA would not Load() tables with unusual signatures. 1412Now ignore ACPI table signature for Load() operator. Only "SSDT" is 1413acceptable to the ACPI spec, but tables are seen with OEMx and null sigs. 1414Therefore, signature validation is worthless. Apparently MS ACPI accepts such 1415signatures, ACPICA must be compatible. BZ 10454. 1416 1417Fixed a possible negative array index in AcpiUtValidateException. Added NULL 1418fields to the exception string arrays to eliminate a -1 subtraction on the 1419SubStatus field. 1420 1421Updated the debug tracking macros to reduce overall code and data size. 1422Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings 1423instead of pointers to static strings. Jan Beulich and Bob Moore. 1424 1425Implemented argument count checking in control method invocation via 1426AcpiEvaluateObject. Now emit an error if too few arguments, warning if too 1427many. This applies only to extern programmatic control method execution, not 1428method-to-method calls within the AML. Lin Ming. 1429 1430Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is no 1431longer needed, especially with the removal of 16-bit support. It was replaced 1432mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 bit on 143332/64-bit platforms is required. 1434 1435Added the C const qualifier for appropriate string constants -- mostly 1436MODULE_NAME and printf format strings. Jan Beulich. 1437 1438Example Code and Data Size: These are the sizes for the OS-independent 1439acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1440debug version of the code includes the debug output trace mechanism and has a 1441much larger code and data size. 1442 1443 Previous Release: 1444 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 1445 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 1446 Current Release: 1447 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 1448 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 1449 14502) iASL Compiler/Disassembler and Tools: 1451 1452Implemented ACPI table revision ID validation in the disassembler. Zero is 1453always invalid. For DSDTs, the ID controls the interpreter integer width. 1 1454means 32-bit and this is unusual. 2 or greater is 64-bit. 1455 1456---------------------------------------- 145721 March 2008. Summary of changes for version 20080321: 1458 14591) ACPI CA Core Subsystem: 1460 1461Implemented an additional change to the GPE support in order to suppress 1462spurious or stray GPEs. The AcpiEvDisableGpe function will now permanently 1463disable incoming GPEs that are neither enabled nor disabled -- meaning that 1464the GPE is unknown to the system. This should prevent future interrupt floods 1465from that GPE. BZ 6217 (Zhang Rui) 1466 1467Fixed a problem where NULL package elements were not returned to the 1468AcpiEvaluateObject interface correctly. The element was simply ignored 1469instead of returning a NULL ACPI_OBJECT package element, potentially causing 1470a buffer overflow and/or confusing the caller who expected a fixed number of 1471elements. BZ 10132 (Lin Ming, Bob Moore) 1472 1473Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word, Dword, 1474Qword), Field, BankField, and IndexField operators when invoked from inside 1475an executing control method. In this case, these operators created namespace 1476nodes that were incorrectly left marked as permanent nodes instead of 1477temporary nodes. This could cause a problem if there is race condition 1478between an exiting control method and a running namespace walk. (Reported by 1479Linn Crosetto) 1480 1481Fixed a problem where the CreateField and CreateXXXField operators would 1482incorrectly allow duplicate names (the name of the field) with no exception 1483generated. 1484 1485Implemented several changes for Notify handling. Added support for new Notify 1486values (ACPI 2.0+) and improved the Notify debug output. Notify on 1487PowerResource objects is no longer allowed, as per the ACPI specification. 1488(Bob Moore, Zhang Rui) 1489 1490All Reference Objects returned via the AcpiEvaluateObject interface are now 1491marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved for 1492NULL objects - either NULL package elements or unresolved named references. 1493 1494Fixed a problem where an extraneous debug message was produced for package 1495objects (when debugging enabled). The message "Package List length larger 1496than NumElements count" is now produced in the correct case, and is now an 1497error message rather than a debug message. Added a debug message for the 1498opposite case, where NumElements is larger than the Package List (the package 1499will be padded out with NULL elements as per the ACPI spec.) 1500 1501Implemented several improvements for the output of the ASL "Debug" object to 1502clarify and keep all data for a given object on one output line. 1503 1504Fixed two size calculation issues with the variable-length Start Dependent 1505resource descriptor. 1506 1507Example Code and Data Size: These are the sizes for the OS-independent 1508acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1509debug version of the code includes the debug output trace mechanism and has 1510a much larger code and data size. 1511 1512 Previous Release: 1513 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 1514 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 1515 Current Release: 1516 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 1517 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 1518 15192) iASL Compiler/Disassembler and Tools: 1520 1521Fixed a problem with the use of the Switch operator where execution of the 1522containing method by multiple concurrent threads could cause an 1523AE_ALREADY_EXISTS exception. This is caused by the fact that there is no 1524actual Switch opcode, it must be simulated with local named temporary 1525variables and if/else pairs. The solution chosen was to mark any method that 1526uses Switch as Serialized, thus preventing multiple thread entries. BZ 469. 1527 1528---------------------------------------- 152913 February 2008. Summary of changes for version 20080213: 1530 15311) ACPI CA Core Subsystem: 1532 1533Implemented another MS compatibility design change for GPE/Notify handling. 1534GPEs are now cleared/enabled asynchronously to allow all pending notifies to 1535complete first. It is expected that the OSL will queue the enable request 1536behind all pending notify requests (may require changes to the local host OSL 1537in AcpiOsExecute). Alexey Starikovskiy. 1538 1539Fixed a problem where buffer and package objects passed as arguments to a 1540control method via the external AcpiEvaluateObject interface could cause an 1541AE_AML_INTERNAL exception depending on the order and type of operators 1542executed by the target control method. 1543 1544Fixed a problem where resource descriptor size optimization could cause a 1545problem when a _CRS resource template is passed to a _SRS method. The _SRS 1546resource template must use the same descriptors (with the same size) as 1547returned from _CRS. This change affects the following resource descriptors: 1548IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 9487) 1549 1550Fixed a problem where a CopyObject to RegionField, BankField, and IndexField 1551objects did not perform an implicit conversion as it should. These types must 1552retain their initial type permanently as per the ACPI specification. However, 1553a CopyObject to all other object types should not perform an implicit 1554conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388 1555 1556Fixed a problem with the AcpiGetDevices interface where the mechanism to 1557match device CIDs did not examine the entire list of available CIDs, but 1558instead aborted on the first non-matching CID. Andrew Patterson. 1559 1560Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro was 1561inadvertently changed to return a 16-bit value instead of a 32-bit value, 1562truncating the upper dword of a 64-bit value. This macro is only used to 1563display debug output, so no incorrect calculations were made. Also, 1564reimplemented the macro so that a 64-bit shift is not performed by 1565inefficient compilers. 1566 1567Added missing va_end statements that should correspond with each va_start 1568statement. 1569 1570Example Code and Data Size: These are the sizes for the OS-independent 1571acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1572debug version of the code includes the debug output trace mechanism and has 1573a much larger code and data size. 1574 1575 Previous Release: 1576 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 1577 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 1578 Current Release: 1579 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 1580 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 1581 15822) iASL Compiler/Disassembler and Tools: 1583 1584Implemented full disassembler support for the following new ACPI tables: 1585BERT, EINJ, and ERST. Implemented partial disassembler support for the 1586complicated HEST table. These tables support the Windows Hardware Error 1587Architecture (WHEA). 1588 1589---------------------------------------- 159023 January 2008. Summary of changes for version 20080123: 1591 15921) ACPI CA Core Subsystem: 1593 1594Added the 2008 copyright to all module headers and signons. This affects 1595virtually every file in the ACPICA core subsystem, the iASL compiler, and 1596the tools/utilities. 1597 1598Fixed a problem with the SizeOf operator when used with Package and Buffer 1599objects. These objects have deferred execution for some arguments, and the 1600execution is now completed before the SizeOf is executed. This problem caused 1601unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) BZ 16029558 1603 1604Implemented an enhancement to the interpreter "slack mode". In the absence of 1605an explicit return or an implicitly returned object from the last executed 1606opcode, a control method will now implicitly return an integer of value 0 for 1607Microsoft compatibility. (Lin Ming) BZ 392 1608 1609Fixed a problem with the Load operator where an exception was not returned in 1610the case where the table is already loaded. (Lin Ming) BZ 463 1611 1612Implemented support for the use of DDBHandles as an Indexed Reference, as per 1613the ACPI spec. (Lin Ming) BZ 486 1614 1615Implemented support for UserTerm (Method invocation) for the Unload operator 1616as per the ACPI spec. (Lin Ming) BZ 580 1617 1618Fixed a problem with the LoadTable operator where the OemId and OemTableId 1619input strings could cause unexpected failures if they were shorter than the 1620maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576 1621 1622Implemented support for UserTerm (Method invocation) for the Unload operator 1623as per the ACPI spec. (Lin Ming) BZ 580 1624 1625Implemented header file support for new ACPI tables - BERT, ERST, EINJ, HEST, 1626IBFT, UEFI, WDAT. Disassembler support is forthcoming. 1627 1628Example Code and Data Size: These are the sizes for the OS-independent 1629acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1630debug version of the code includes the debug output trace mechanism and has 1631a much larger code and data size. 1632 1633 Previous Release: 1634 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 1635 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 1636 Current Release: 1637 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 1638 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 1639 16402) iASL Compiler/Disassembler and Tools: 1641 1642Implemented support in the disassembler for checksum validation on incoming 1643binary DSDTs and SSDTs. If incorrect, a message is displayed within the table 1644header dump at the start of the disassembly. 1645 1646Implemented additional debugging information in the namespace listing file 1647created during compilation. In addition to the namespace hierarchy, the full 1648pathname to each namespace object is displayed. 1649 1650Fixed a problem with the disassembler where invalid ACPI tables could cause 1651faults or infinite loops. 1652 1653Fixed an unexpected parse error when using the optional "parameter types" 1654list in a control method declaration. (Lin Ming) BZ 397 1655 1656Fixed a problem where two External declarations with the same name did not 1657cause an error (Lin Ming) BZ 509 1658 1659Implemented support for full TermArgs (adding Argx, Localx and method 1660invocation) for the ParameterData parameter to the LoadTable operator. (Lin 1661Ming) BZ 583,587 1662 1663---------------------------------------- 166419 December 2007. Summary of changes for version 20071219: 1665 16661) ACPI CA Core Subsystem: 1667 1668Implemented full support for deferred execution for the TermArg string 1669arguments for DataTableRegion. This enables forward references and full 1670operand resolution for the three string arguments. Similar to OperationRegion 1671deferred argument execution.) Lin Ming. BZ 430 1672 1673Implemented full argument resolution support for the BankValue argument to 1674BankField. Previously, only constants were supported, now any TermArg may be 1675used. Lin Ming BZ 387, 393 1676 1677Fixed a problem with AcpiGetDevices where the search of a branch of the 1678device tree could be terminated prematurely. In accordance with the ACPI 1679specification, the search down the current branch is terminated if a device 1680is both not present and not functional (instead of just not present.) Yakui 1681Zhao. 1682 1683Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly if 1684the underlying AML code changed the GPE enable registers. Now, any unknown 1685incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately disabled 1686instead of simply ignored. Rui Zhang. 1687 1688Fixed a problem with Index Fields where the Index register was incorrectly 1689limited to a maximum of 32 bits. Now any size may be used. 1690 1691Fixed a couple memory leaks associated with "implicit return" objects when 1692the AML Interpreter slack mode is enabled. Lin Ming BZ 349 1693 1694Example Code and Data Size: These are the sizes for the OS-independent 1695acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1696debug version of the code includes the debug output trace mechanism and has 1697a much larger code and data size. 1698 1699 Previous Release: 1700 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 1701 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 1702 Current Release: 1703 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 1704 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 1705 1706---------------------------------------- 170714 November 2007. Summary of changes for version 20071114: 1708 17091) ACPI CA Core Subsystem: 1710 1711Implemented event counters for each of the Fixed Events, the ACPI SCI 1712(interrupt) itself, and control methods executed. Named 1713AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. These 1714should be useful for debugging and statistics. 1715 1716Implemented a new external interface, AcpiGetStatistics, to retrieve the 1717contents of the various event counters. Returns the current values for 1718AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and 1719AcpiMethodCount. The interface can be expanded in the future if new counters 1720are added. Device drivers should use this interface rather than access the 1721counters directly. 1722 1723Fixed a problem with the FromBCD and ToBCD operators. With some compilers, 1724the ShortDivide function worked incorrectly, causing problems with the BCD 1725functions with large input values. A truncation from 64-bit to 32-bit 1726inadvertently occurred. Internal BZ 435. Lin Ming 1727 1728Fixed a problem with Index references passed as method arguments. References 1729passed as arguments to control methods were dereferenced immediately (before 1730control was passed to the called method). The references are now correctly 1731passed directly to the called method. BZ 5389. Lin Ming 1732 1733Fixed a problem with CopyObject used in conjunction with the Index operator. 1734The reference was incorrectly dereferenced before the copy. The reference is 1735now correctly copied. BZ 5391. Lin Ming 1736 1737Fixed a problem with Control Method references within Package objects. These 1738references are now correctly generated. This completes the package 1739construction overhaul that began in version 20071019. 1740 1741Example Code and Data Size: These are the sizes for the OS-independent 1742acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1743debug version of the code includes the debug output trace mechanism and has 1744a much larger code and data size. 1745 1746 Previous Release: 1747 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 1748 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 1749 Current Release: 1750 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 1751 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 1752 1753 17542) iASL Compiler/Disassembler and Tools: 1755 1756The AcpiExec utility now installs handlers for all of the predefined 1757Operation Region types. New types supported are: PCI_Config, CMOS, and 1758PCIBARTarget. 1759 1760Fixed a problem with the 64-bit version of AcpiExec where the extended (64- 1761bit) address fields for the DSDT and FACS within the FADT were not being 1762used, causing truncation of the upper 32-bits of these addresses. Lin Ming 1763and Bob Moore 1764 1765---------------------------------------- 176619 October 2007. Summary of changes for version 20071019: 1767 17681) ACPI CA Core Subsystem: 1769 1770Fixed a problem with the Alias operator when the target of the alias is a 1771named ASL operator that opens a new scope -- Scope, Device, PowerResource, 1772Processor, and ThermalZone. In these cases, any children of the original 1773operator could not be accessed via the alias, potentially causing unexpected 1774AE_NOT_FOUND exceptions. (BZ 9067) 1775 1776Fixed a problem with the Package operator where all named references were 1777created as object references and left otherwise unresolved. According to the 1778ACPI specification, a Package can only contain Data Objects or references to 1779control methods. The implication is that named references to Data Objects 1780(Integer, Buffer, String, Package, BufferField, Field) should be resolved 1781immediately upon package creation. This is the approach taken with this 1782change. References to all other named objects (Methods, Devices, Scopes, 1783etc.) are all now properly created as reference objects. (BZ 5328) 1784 1785Reverted a change to Notify handling that was introduced in version 178620070508. This version changed the Notify handling from asynchronous to 1787fully synchronous (Device driver Notify handling with respect to the Notify 1788ASL operator). It was found that this change caused more problems than it 1789solved and was removed by most users. 1790 1791Fixed a problem with the Increment and Decrement operators where the type of 1792the target object could be unexpectedly and incorrectly changed. (BZ 353) 1793Lin Ming. 1794 1795Fixed a problem with the Load and LoadTable operators where the table 1796location within the namespace was ignored. Instead, the table was always 1797loaded into the root or current scope. Lin Ming. 1798 1799Fixed a problem with the Load operator when loading a table from a buffer 1800object. The input buffer was prematurely zeroed and/or deleted. (BZ 577) 1801 1802Fixed a problem with the Debug object where a store of a DdbHandle reference 1803object to the Debug object could cause a fault. 1804 1805Added a table checksum verification for the Load operator, in the case where 1806the load is from a buffer. (BZ 578). 1807 1808Implemented additional parameter validation for the LoadTable operator. The 1809length of the input strings SignatureString, OemIdString, and OemTableId are 1810now checked for maximum lengths. (BZ 582) Lin Ming. 1811 1812Example Code and Data Size: These are the sizes for the OS-independent 1813acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1814debug version of the code includes the debug output trace mechanism and has 1815a much larger code and data size. 1816 1817 Previous Release: 1818 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 1819 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 1820 Current Release: 1821 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 1822 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 1823 1824 18252) iASL Compiler/Disassembler: 1826 1827Fixed a problem where if a single file was specified and the file did not 1828exist, no error message was emitted. (Introduced with wildcard support in 1829version 20070917.) 1830 1831---------------------------------------- 183219 September 2007. Summary of changes for version 20070919: 1833 18341) ACPI CA Core Subsystem: 1835 1836Designed and implemented new external interfaces to install and remove 1837handlers for ACPI table-related events. Current events that are defined are 1838LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as 1839they are dynamically loaded and unloaded. See AcpiInstallTableHandler and 1840AcpiRemoveTableHandler. (Lin Ming and Bob Moore) 1841 1842Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag 1843(acpi_serialized option on Linux) could cause some systems to hang during 1844initialization. (Bob Moore) BZ 8171 1845 1846Fixed a problem where objects of certain types (Device, ThermalZone, 1847Processor, PowerResource) can be not found if they are declared and 1848referenced from within the same control method (Lin Ming) BZ 341 1849 1850Example Code and Data Size: These are the sizes for the OS-independent 1851acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1852debug version of the code includes the debug output trace mechanism and has 1853a much larger code and data size. 1854 1855 Previous Release: 1856 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 1857 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 1858 Current Release: 1859 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 1860 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 1861 1862 18632) iASL Compiler/Disassembler: 1864 1865Implemented support to allow multiple files to be compiled/disassembled in a 1866single invocation. This includes command line wildcard support for both the 1867Windows and Unix versions of the compiler. This feature simplifies the 1868disassembly and compilation of multiple ACPI tables in a single directory. 1869 1870---------------------------------------- 187108 May 2007. Summary of changes for version 20070508: 1872 18731) ACPI CA Core Subsystem: 1874 1875Implemented a Microsoft compatibility design change for the handling of the 1876Notify AML operator. Previously, notify handlers were dispatched and 1877executed completely asynchronously in a deferred thread. The new design 1878still executes the notify handlers in a different thread, but the original 1879thread that executed the Notify() now waits at a synchronization point for 1880the notify handler to complete. Some machines depend on a synchronous Notify 1881operator in order to operate correctly. 1882 1883Implemented support to allow Package objects to be passed as method 1884arguments to the external AcpiEvaluateObject interface. Previously, this 1885would return the AE_NOT_IMPLEMENTED exception. This feature had not been 1886implemented since there were no reserved control methods that required it 1887until recently. 1888 1889Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs that 1890contained invalid non-zero values in reserved fields could cause later 1891failures because these fields have meaning in later revisions of the FADT. 1892For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The fields 1893are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.) 1894 1895Fixed a problem where the Global Lock handle was not properly updated if a 1896thread that acquired the Global Lock via executing AML code then attempted 1897to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by Joe 1898Liu. 1899 1900Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list 1901could be corrupted if the interrupt being removed was at the head of the 1902list. Reported by Linn Crosetto. 1903 1904Example Code and Data Size: These are the sizes for the OS-independent 1905acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1906debug version of the code includes the debug output trace mechanism and has 1907a much larger code and data size. 1908 1909 Previous Release: 1910 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 1911 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 1912 Current Release: 1913 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 1914 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 1915 1916---------------------------------------- 191720 March 2007. Summary of changes for version 20070320: 1918 19191) ACPI CA Core Subsystem: 1920 1921Implemented a change to the order of interpretation and evaluation of AML 1922operand objects within the AML interpreter. The interpreter now evaluates 1923operands in the order that they appear in the AML stream (and the 1924corresponding ASL code), instead of in the reverse order (after the entire 1925operand list has been parsed). The previous behavior caused several subtle 1926incompatibilities with the Microsoft AML interpreter as well as being 1927somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov. 1928 1929Implemented a change to the ACPI Global Lock support. All interfaces to the 1930global lock now allow the same thread to acquire the lock multiple times. 1931This affects the AcpiAcquireGlobalLock external interface to the global lock 1932as well as the internal use of the global lock to support AML fields -- a 1933control method that is holding the global lock can now simultaneously access 1934AML fields that require global lock protection. Previously, in both cases, 1935this would have resulted in an AE_ALREADY_ACQUIRED exception. The change to 1936AcpiAcquireGlobalLock is of special interest to drivers for the Embedded 1937Controller. There is no change to the behavior of the AML Acquire operator, 1938as this can already be used to acquire a mutex multiple times by the same 1939thread. BZ 8066. With assistance from Alexey Starikovskiy. 1940 1941Fixed a problem where invalid objects could be referenced in the AML 1942Interpreter after error conditions. During operand evaluation, ensure that 1943the internal "Return Object" field is cleared on error and only valid 1944pointers are stored there. Caused occasional access to deleted objects that 1945resulted in "large reference count" warning messages. Valery Podrezov. 1946 1947Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur on 1948deeply nested control method invocations. BZ 7873, local BZ 487. Valery 1949Podrezov. 1950 1951Fixed an internal problem with the handling of result objects on the 1952interpreter result stack. BZ 7872. Valery Podrezov. 1953 1954Removed obsolete code that handled the case where AML_NAME_OP is the target 1955of a reference (Reference.Opcode). This code was no longer necessary. BZ 19567874. Valery Podrezov. 1957 1958Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This was a 1959remnant from the previously discontinued 16-bit support. 1960 1961Example Code and Data Size: These are the sizes for the OS-independent 1962acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1963debug version of the code includes the debug output trace mechanism and has 1964a much larger code and data size. 1965 1966 Previous Release: 1967 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 1968 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 1969 Current Release: 1970 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 1971 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 1972 1973---------------------------------------- 197426 January 2007. Summary of changes for version 20070126: 1975 19761) ACPI CA Core Subsystem: 1977 1978Added the 2007 copyright to all module headers and signons. This affects 1979virtually every file in the ACPICA core subsystem, the iASL compiler, and 1980the utilities. 1981 1982Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable 1983during a table load. A bad pointer was passed in the case where the DSDT is 1984overridden, causing a fault in this case. 1985 1986Example Code and Data Size: These are the sizes for the OS-independent 1987acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1988debug version of the code includes the debug output trace mechanism and has 1989a much larger code and data size. 1990 1991 Previous Release: 1992 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 1993 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 1994 Current Release: 1995 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 1996 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 1997 1998---------------------------------------- 199915 December 2006. Summary of changes for version 20061215: 2000 20011) ACPI CA Core Subsystem: 2002 2003Support for 16-bit ACPICA has been completely removed since it is no longer 2004necessary and it clutters the code. All 16-bit macros, types, and 2005conditional compiles have been removed, cleaning up and simplifying the code 2006across the entire subsystem. DOS support is no longer needed since the 2007bootable Linux firmware kit is now available. 2008 2009The handler for the Global Lock is now removed during AcpiTerminate to 2010enable a clean subsystem restart, via the implementation of the 2011AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz, 2012HP) 2013 2014Implemented enhancements to the multithreading support within the debugger 2015to enable improved multithreading debugging and evaluation of the subsystem. 2016(Valery Podrezov) 2017 2018Debugger: Enhanced the Statistics/Memory command to emit the total (maximum) 2019memory used during the execution, as well as the maximum memory consumed by 2020each of the various object types. (Valery Podrezov) 2021 2022Example Code and Data Size: These are the sizes for the OS-independent 2023acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2024debug version of the code includes the debug output trace mechanism and has 2025a much larger code and data size. 2026 2027 Previous Release: 2028 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 2029 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 2030 Current Release: 2031 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2032 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 2033 2034 20352) iASL Compiler/Disassembler and Tools: 2036 2037AcpiExec: Implemented a new option (-m) to display full memory use 2038statistics upon subsystem/program termination. (Valery Podrezov) 2039 2040---------------------------------------- 204109 November 2006. Summary of changes for version 20061109: 2042 20431) ACPI CA Core Subsystem: 2044 2045Optimized the Load ASL operator in the case where the source operand is an 2046operation region. Simply map the operation region memory, instead of 2047performing a bytewise read. (Region must be of type SystemMemory, see 2048below.) 2049 2050Fixed the Load ASL operator for the case where the source operand is a 2051region field. A buffer object is also allowed as the source operand. BZ 480 2052 2053Fixed a problem where the Load ASL operator allowed the source operand to be 2054an operation region of any type. It is now restricted to regions of type 2055SystemMemory, as per the ACPI specification. BZ 481 2056 2057Additional cleanup and optimizations for the new Table Manager code. 2058 2059AcpiEnable will now fail if all of the required ACPI tables are not loaded 2060(FADT, FACS, DSDT). BZ 477 2061 2062Added #pragma pack(8/4) to acobject.h to ensure that the structures in this 2063header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been 2064manually optimized to be aligned and will not work if it is byte-packed. 2065 2066Example Code and Data Size: These are the sizes for the OS-independent 2067acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2068debug version of the code includes the debug output trace mechanism and has 2069a much larger code and data size. 2070 2071 Previous Release: 2072 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 2073 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 2074 Current Release: 2075 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 2076 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 2077 2078 20792) iASL Compiler/Disassembler and Tools: 2080 2081Fixed a problem where the presence of the _OSI predefined control method 2082within complex expressions could cause an internal compiler error. 2083 2084AcpiExec: Implemented full region support for multiple address spaces. 2085SpaceId is now part of the REGION object. BZ 429 2086 2087---------------------------------------- 208811 October 2006. Summary of changes for version 20061011: 2089 20901) ACPI CA Core Subsystem: 2091 2092Completed an AML interpreter performance enhancement for control method 2093execution. Previously a 2-pass parse/execution, control methods are now 2094completely parsed and executed in a single pass. This improves overall 2095interpreter performance by ~25%, reduces code size, and reduces CPU stack 2096use. (Valery Podrezov + interpreter changes in version 20051202 that 2097eliminated namespace loading during the pass one parse.) 2098 2099Implemented _CID support for PCI Root Bridge detection. If the _HID does not 2100match the predefined PCI Root Bridge IDs, the _CID list (if present) is now 2101obtained and also checked for an ID match. 2102 2103Implemented additional support for the PCI _ADR execution: upsearch until a 2104device scope is found before executing _ADR. This allows PCI_Config 2105operation regions to be declared locally within control methods underneath 2106PCI device objects. 2107 2108Fixed a problem with a possible race condition between threads executing 2109AcpiWalkNamespace and the AML interpreter. This condition was removed by 2110modifying AcpiWalkNamespace to (by default) ignore all temporary namespace 2111entries created during any concurrent control method execution. An 2112additional namespace race condition is known to exist between 2113AcpiWalkNamespace and the Load/Unload ASL operators and is still under 2114investigation. 2115 2116Restructured the AML ParseLoop function, breaking it into several 2117subfunctions in order to reduce CPU stack use and improve maintainability. 2118(Mikhail Kouzmich) 2119 2120AcpiGetHandle: Fix for parameter validation to detect invalid combinations 2121of prefix handle and pathname. BZ 478 2122 2123Example Code and Data Size: These are the sizes for the OS-independent 2124acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2125debug version of the code includes the debug output trace mechanism and has 2126a much larger code and data size. 2127 2128 Previous Release: 2129 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 2130 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 2131 Current Release: 2132 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 2133 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 2134 21352) iASL Compiler/Disassembler and Tools: 2136 2137Ported the -g option (get local ACPI tables) to the new ACPICA Table Manager 2138to restore original behavior. 2139 2140---------------------------------------- 214127 September 2006. Summary of changes for version 20060927: 2142 21431) ACPI CA Core Subsystem: 2144 2145Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister. 2146These functions now use a spinlock for mutual exclusion and the interrupt 2147level indication flag is not needed. 2148 2149Fixed a problem with the Global Lock where the lock could appear to be 2150obtained before it is actually obtained. The global lock semaphore was 2151inadvertently created with one unit instead of zero units. (BZ 464) Fiodor 2152Suietov. 2153 2154Fixed a possible memory leak and fault in AcpiExResolveObjectToValue during 2155a read from a buffer or region field. (BZ 458) Fiodor Suietov. 2156 2157Example Code and Data Size: These are the sizes for the OS-independent 2158acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2159debug version of the code includes the debug output trace mechanism and has 2160a much larger code and data size. 2161 2162 Previous Release: 2163 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 2164 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 2165 Current Release: 2166 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 2167 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 2168 2169 21702) iASL Compiler/Disassembler and Tools: 2171 2172Fixed a compilation problem with the pre-defined Resource Descriptor field 2173names where an "object does not exist" error could be incorrectly generated 2174if the parent ResourceTemplate pathname places the template within a 2175different namespace scope than the current scope. (BZ 7212) 2176 2177Fixed a problem where the compiler could hang after syntax errors detected 2178in an ElseIf construct. (BZ 453) 2179 2180Fixed a problem with the AmlFilename parameter to the DefinitionBlock() 2181operator. An incorrect output filename was produced when this parameter was 2182a null string (""). Now, the original input filename is used as the AML 2183output filename, with an ".aml" extension. 2184 2185Implemented a generic batch command mode for the AcpiExec utility (execute 2186any AML debugger command) (Valery Podrezov). 2187 2188---------------------------------------- 218912 September 2006. Summary of changes for version 20060912: 2190 21911) ACPI CA Core Subsystem: 2192 2193Enhanced the implementation of the "serialized mode" of the interpreter 2194(enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is 2195specified, instead of creating a serialization semaphore per control method, 2196the interpreter lock is simply no longer released before a blocking 2197operation during control method execution. This effectively makes the AML 2198Interpreter single-threaded. The overhead of a semaphore per-method is 2199eliminated. 2200 2201Fixed a regression where an error was no longer emitted if a control method 2202attempts to create 2 objects of the same name. This once again returns 2203AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism that 2204will dynamically serialize the control method to possible prevent future 2205errors. (BZ 440) 2206 2207Integrated a fix for a problem with PCI Express HID detection in the PCI 2208Config Space setup procedure. (BZ 7145) 2209 2210Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the 2211AcpiHwInitialize function - the FADT registers are now validated when the 2212table is loaded. 2213 2214Added two new warnings during FADT verification - 1) if the FADT is larger 2215than the largest known FADT version, and 2) if there is a mismatch between a 221632-bit block address and the 64-bit X counterpart (when both are non-zero.) 2217 2218Example Code and Data Size: These are the sizes for the OS-independent 2219acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2220debug version of the code includes the debug output trace mechanism and has 2221a much larger code and data size. 2222 2223 Previous Release: 2224 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 2225 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 2226 Current Release: 2227 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 2228 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 2229 2230 22312) iASL Compiler/Disassembler and Tools: 2232 2233Fixed a problem with the implementation of the Switch() operator where the 2234temporary variable was declared too close to the actual Switch, instead of 2235at method level. This could cause a problem if the Switch() operator is 2236within a while loop, causing an error on the second iteration. (BZ 460) 2237 2238Disassembler - fix for error emitted for unknown type for target of scope 2239operator. Now, ignore it and continue. 2240 2241Disassembly of an FADT now verifies the input FADT and reports any errors 2242found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs. 2243 2244Disassembly of raw data buffers with byte initialization data now prefixes 2245each output line with the current buffer offset. 2246 2247Disassembly of ASF! table now includes all variable-length data fields at 2248the end of some of the subtables. 2249 2250The disassembler now emits a comment if a buffer appears to be a 2251ResourceTemplate, but cannot be disassembled as such because the EndTag does 2252not appear at the very end of the buffer. 2253 2254AcpiExec - Added the "-t" command line option to enable the serialized mode 2255of the AML interpreter. 2256 2257---------------------------------------- 225831 August 2006. Summary of changes for version 20060831: 2259 22601) ACPI CA Core Subsystem: 2261 2262Miscellaneous fixes for the Table Manager: 2263- Correctly initialize internal common FADT for all 64-bit "X" fields 2264- Fixed a couple table mapping issues during table load 2265- Fixed a couple alignment issues for IA64 2266- Initialize input array to zero in AcpiInitializeTables 2267- Additional parameter validation for AcpiGetTable, AcpiGetTableHeader, 2268AcpiGetTableByIndex 2269 2270Change for GPE support: when a "wake" GPE is received, all wake GPEs are now 2271immediately disabled to prevent the waking GPE from firing again and to 2272prevent other wake GPEs from interrupting the wake process. 2273 2274Added the AcpiGpeCount global that tracks the number of processed GPEs, to 2275be used for debugging systems with a large number of ACPI interrupts. 2276 2277Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in 2278both the ACPICA headers and the disassembler. 2279 2280Example Code and Data Size: These are the sizes for the OS-independent 2281acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2282debug version of the code includes the debug output trace mechanism and has 2283a much larger code and data size. 2284 2285 Previous Release: 2286 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 2287 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 2288 Current Release: 2289 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 2290 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 2291 2292 22932) iASL Compiler/Disassembler and Tools: 2294 2295Disassembler support for the DMAR ACPI table. 2296 2297---------------------------------------- 229823 August 2006. Summary of changes for version 20060823: 2299 23001) ACPI CA Core Subsystem: 2301 2302The Table Manager component has been completely redesigned and 2303reimplemented. The new design is much simpler, and reduces the overall code 2304and data size of the kernel-resident ACPICA by approximately 5%. Also, it is 2305now possible to obtain the ACPI tables very early during kernel 2306initialization, even before dynamic memory management is initialized. 2307(Alexey Starikovskiy, Fiodor Suietov, Bob Moore) 2308 2309Obsolete ACPICA interfaces: 2310 2311- AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel init 2312time). 2313- AcpiLoadTable: Not needed. 2314- AcpiUnloadTable: Not needed. 2315 2316New ACPICA interfaces: 2317 2318- AcpiInitializeTables: Must be called before the table manager can be used. 2319- AcpiReallocateRootTable: Used to transfer the root table to dynamically 2320allocated memory after it becomes available. 2321- AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI tables 2322in the RSDT/XSDT. 2323 2324Other ACPICA changes: 2325 2326- AcpiGetTableHeader returns the actual mapped table header, not a copy. Use 2327AcpiOsUnmapMemory to free this mapping. 2328- AcpiGetTable returns the actual mapped table. The mapping is managed 2329internally and must not be deleted by the caller. Use of this interface 2330causes no additional dynamic memory allocation. 2331- AcpiFindRootPointer: Support for physical addressing has been eliminated, 2332it appeared to be unused. 2333- The interface to AcpiOsMapMemory has changed to be consistent with the 2334other allocation interfaces. 2335- The interface to AcpiOsGetRootPointer has changed to eliminate unnecessary 2336parameters. 2337- ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 64- 2338bit platforms. Was previously 64 bits on all platforms. 2339- The interface to the ACPI Global Lock acquire/release macros have changed 2340slightly since ACPICA no longer keeps a local copy of the FACS with a 2341constructed pointer to the actual global lock. 2342 2343Porting to the new table manager: 2344 2345- AcpiInitializeTables: Must be called once, and can be called anytime 2346during the OS initialization process. It allows the host to specify an area 2347of memory to be used to store the internal version of the RSDT/XSDT (root 2348table). This allows the host to access ACPI tables before memory management 2349is initialized and running. 2350- AcpiReallocateRootTable: Can be called after memory management is running 2351to copy the root table to a dynamically allocated array, freeing up the 2352scratch memory specified in the call to AcpiInitializeTables. 2353- AcpiSubsystemInitialize: This existing interface is independent of the 2354Table Manager, and does not have to be called before the Table Manager can 2355be used, it only must be called before the rest of ACPICA can be used. 2356- ACPI Tables: Some changes have been made to the names and structure of the 2357actbl.h and actbl1.h header files and may require changes to existing code. 2358For example, bitfields have been completely removed because of their lack of 2359portability across C compilers. 2360- Update interfaces to the Global Lock acquire/release macros if local 2361versions are used. (see acwin.h) 2362 2363Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c 2364 2365New files: tbfind.c 2366 2367Example Code and Data Size: These are the sizes for the OS-independent 2368acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2369debug version of the code includes the debug output trace mechanism and has 2370a much larger code and data size. 2371 2372 Previous Release: 2373 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 2374 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 2375 Current Release: 2376 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 2377 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 2378 2379 23802) iASL Compiler/Disassembler and Tools: 2381 2382No changes for this release. 2383 2384---------------------------------------- 238521 July 2006. Summary of changes for version 20060721: 2386 23871) ACPI CA Core Subsystem: 2388 2389The full source code for the ASL test suite used to validate the iASL 2390compiler and the ACPICA core subsystem is being released with the ACPICA 2391source for the first time. The source is contained in a separate package and 2392consists of over 1100 files that exercise all ASL/AML operators. The package 2393should appear on the Intel/ACPI web site shortly. (Valery Podrezov, Fiodor 2394Suietov) 2395 2396Completed a new design and implementation for support of the ACPI Global 2397Lock. On the OS side, the global lock is now treated as a standard AML 2398mutex. Previously, multiple OS threads could "acquire" the global lock 2399simultaneously. However, this could cause the BIOS to be starved out of the 2400lock - especially in cases such as the Embedded Controller driver where 2401there is a tight coupling between the OS and the BIOS. 2402 2403Implemented an optimization for the ACPI Global Lock interrupt mechanism. 2404The Global Lock interrupt handler no longer queues the execution of a 2405separate thread to signal the global lock semaphore. Instead, the semaphore 2406is signaled directly from the interrupt handler. 2407 2408Implemented support within the AML interpreter for package objects that 2409contain a larger AML length (package list length) than the package element 2410count. In this case, the length of the package is truncated to match the 2411package element count. Some BIOS code apparently modifies the package length 2412on the fly, and this change supports this behavior. Provides compatibility 2413with the MS AML interpreter. (With assistance from Fiodor Suietov) 2414 2415Implemented a temporary fix for the BankValue parameter of a Bank Field to 2416support all constant values, now including the Zero and One opcodes. 2417Evaluation of this parameter must eventually be converted to a full TermArg 2418evaluation. A not-implemented error is now returned (temporarily) for non- 2419constant values for this parameter. 2420 2421Fixed problem reports (Fiodor Suietov) integrated: 2422- Fix for premature object deletion after CopyObject on Operation Region (BZ 2423350) 2424 2425Example Code and Data Size: These are the sizes for the OS-independent 2426acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2427debug version of the code includes the debug output trace mechanism and has 2428a much larger code and data size. 2429 2430 Previous Release: 2431 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total 2432 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total 2433 Current Release: 2434 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 2435 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 2436 2437 24382) iASL Compiler/Disassembler and Tools: 2439 2440No changes for this release. 2441 2442---------------------------------------- 244307 July 2006. Summary of changes for version 20060707: 2444 24451) ACPI CA Core Subsystem: 2446 2447Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers 2448that do not allow the initialization of address pointers within packed 2449structures - even though the hardware itself may support misaligned 2450transfers. Some of the debug data structures are packed by default to 2451minimize size. 2452 2453Added an error message for the case where AcpiOsGetThreadId() returns zero. 2454A non-zero value is required by the core ACPICA code to ensure the proper 2455operation of AML mutexes and recursive control methods. 2456 2457The DSDT is now the only ACPI table that determines whether the AML 2458interpreter is in 32-bit or 64-bit mode. Not really a functional change, but 2459the hooks for per-table 32/64 switching have been removed from the code. A 2460clarification to the ACPI specification is forthcoming in ACPI 3.0B. 2461 2462Fixed a possible leak of an OwnerID in the error path of 2463AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID 2464deletion to a single place in AcpiTbUninstallTable to correct possible leaks 2465when using the AcpiTbDeleteTablesByType interface (with assistance from 2466Lance Ortiz.) 2467 2468Fixed a problem with Serialized control methods where the semaphore 2469associated with the method could be over-signaled after multiple method 2470invocations. 2471 2472Fixed two issues with the locking of the internal namespace data structure. 2473Both the Unload() operator and AcpiUnloadTable interface now lock the 2474namespace during the namespace deletion associated with the table unload 2475(with assistance from Linn Crosetto.) 2476 2477Fixed problem reports (Valery Podrezov) integrated: 2478- Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426) 2479 2480Fixed problem reports (Fiodor Suietov) integrated: 2481- Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369) 2482- On Address Space handler deletion, needless deactivation call (BZ 374) 2483- AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 375) 2484- Possible memory leak, Notify sub-objects of Processor, Power, ThermalZone 2485(BZ 376) 2486- AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378) 2487- Minimum Length of RSDT should be validated (BZ 379) 2488- AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no 2489Handler (BZ (380) 2490- AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type loaded 2491(BZ 381) 2492 2493Example Code and Data Size: These are the sizes for the OS-independent 2494acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2495debug version of the code includes the debug output trace mechanism and has 2496a much larger code and data size. 2497 2498 Previous Release: 2499 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 2500 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 2501 Current Release: 2502 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 2503 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 2504 2505 25062) iASL Compiler/Disassembler and Tools: 2507 2508Fixed problem reports: 2509Compiler segfault when ASL contains a long (>1024) String declaration (BZ 2510436) 2511 2512---------------------------------------- 251323 June 2006. Summary of changes for version 20060623: 2514 25151) ACPI CA Core Subsystem: 2516 2517Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This 2518allows the type to be customized to the host OS for improved efficiency 2519(since a spinlock is usually a very small object.) 2520 2521Implemented support for "ignored" bits in the ACPI registers. According to 2522the ACPI specification, these bits should be preserved when writing the 2523registers via a read/modify/write cycle. There are 3 bits preserved in this 2524manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11]. 2525 2526Implemented the initial deployment of new OSL mutex interfaces. Since some 2527host operating systems have separate mutex and semaphore objects, this 2528feature was requested. The base code now uses mutexes (and the new mutex 2529interfaces) wherever a binary semaphore was used previously. However, for 2530the current release, the mutex interfaces are defined as macros to map them 2531to the existing semaphore interfaces. Therefore, no OSL changes are required 2532at this time. (See acpiosxf.h) 2533 2534Fixed several problems with the support for the control method SyncLevel 2535parameter. The SyncLevel now works according to the ACPI specification and 2536in concert with the Mutex SyncLevel parameter, since the current SyncLevel 2537is a property of the executing thread. Mutual exclusion for control methods 2538is now implemented with a mutex instead of a semaphore. 2539 2540Fixed three instances of the use of the C shift operator in the bitfield 2541support code (exfldio.c) to avoid the use of a shift value larger than the 2542target data width. The behavior of C compilers is undefined in this case and 2543can cause unpredictable results, and therefore the case must be detected and 2544avoided. (Fiodor Suietov) 2545 2546Added an info message whenever an SSDT or OEM table is loaded dynamically 2547via the Load() or LoadTable() ASL operators. This should improve debugging 2548capability since it will show exactly what tables have been loaded (beyond 2549the tables present in the RSDT/XSDT.) 2550 2551Example Code and Data Size: These are the sizes for the OS-independent 2552acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2553debug version of the code includes the debug output trace mechanism and has 2554a much larger code and data size. 2555 2556 Previous Release: 2557 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 2558 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 2559 Current Release: 2560 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 2561 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 2562 2563 25642) iASL Compiler/Disassembler and Tools: 2565 2566No changes for this release. 2567 2568---------------------------------------- 256908 June 2006. Summary of changes for version 20060608: 2570 25711) ACPI CA Core Subsystem: 2572 2573Converted the locking mutex used for the ACPI hardware to a spinlock. This 2574change should eliminate all problems caused by attempting to acquire a 2575semaphore at interrupt level, and it means that all ACPICA external 2576interfaces that directly access the ACPI hardware can be safely called from 2577interrupt level. OSL code that implements the semaphore interfaces should be 2578able to eliminate any workarounds for being called at interrupt level. 2579 2580Fixed a regression introduced in 20060526 where the ACPI device 2581initialization could be prematurely aborted with an AE_NOT_FOUND if a device 2582did not have an optional _INI method. 2583 2584Fixed an IndexField issue where a write to the Data Register should be 2585limited in size to the AccessSize (width) of the IndexField itself. (BZ 433, 2586Fiodor Suietov) 2587 2588Fixed problem reports (Valery Podrezov) integrated: 2589- Allow store of ThermalZone objects to Debug object (BZ 5369/5370) 2590 2591Fixed problem reports (Fiodor Suietov) integrated: 2592- AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364) 2593 2594Removed four global mutexes that were obsolete and were no longer being 2595used. 2596 2597Example Code and Data Size: These are the sizes for the OS-independent 2598acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2599debug version of the code includes the debug output trace mechanism and has 2600a much larger code and data size. 2601 2602 Previous Release: 2603 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 2604 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 2605 Current Release: 2606 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 2607 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 2608 2609 26102) iASL Compiler/Disassembler and Tools: 2611 2612Fixed a fault when using -g option (get tables from registry) on Windows 2613machines. 2614 2615Fixed problem reports integrated: 2616- Generate error if CreateField NumBits parameter is zero. (BZ 405) 2617- Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor 2618Suietov) 2619- Global table revision override (-r) is ignored (BZ 413) 2620 2621---------------------------------------- 262226 May 2006. Summary of changes for version 20060526: 2623 26241) ACPI CA Core Subsystem: 2625 2626Restructured, flattened, and simplified the internal interfaces for 2627namespace object evaluation - resulting in smaller code, less CPU stack use, 2628and fewer interfaces. (With assistance from Mikhail Kouzmich) 2629 2630Fixed a problem with the CopyObject operator where the first parameter was 2631not typed correctly for the parser, interpreter, compiler, and disassembler. 2632Caused various errors and unexpected behavior. 2633 2634Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits 2635produced incorrect results with some C compilers. Since the behavior of C 2636compilers when the shift value is larger than the datatype width is 2637apparently not well defined, the interpreter now detects this condition and 2638simply returns zero as expected in all such cases. (BZ 395) 2639 2640Fixed problem reports (Valery Podrezov) integrated: 2641- Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329) 2642- Allow interpreter to handle nested method declarations (BZ 5361) 2643 2644Fixed problem reports (Fiodor Suietov) integrated: 2645- AcpiTerminate doesn't free debug memory allocation list objects (BZ 355) 2646- After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 356) 2647- AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357) 2648- Resource Manager should return AE_TYPE for non-device objects (BZ 358) 2649- Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359) 2650- Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360) 2651- Incomplete cleanup branch in AcpiPsParseAml (BZ 361) 2652- Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362) 2653- AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ 365) 2654- Status of the Global Initialization Handler call not used (BZ 366) 2655- Incorrect object parameter to Global Initialization Handler (BZ 367) 2656 2657Example Code and Data Size: These are the sizes for the OS-independent 2658acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2659debug version of the code includes the debug output trace mechanism and has 2660a much larger code and data size. 2661 2662 Previous Release: 2663 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 2664 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 2665 Current Release: 2666 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 2667 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 2668 2669 26702) iASL Compiler/Disassembler and Tools: 2671 2672Modified the parser to allow the names IO, DMA, and IRQ to be used as 2673namespace identifiers with no collision with existing resource descriptor 2674macro names. This provides compatibility with other ASL compilers and is 2675most useful for disassembly/recompilation of existing tables without parse 2676errors. (With assistance from Thomas Renninger) 2677 2678Disassembler: fixed an incorrect disassembly problem with the 2679DataTableRegion and CopyObject operators. Fixed a possible fault during 2680disassembly of some Alias operators. 2681 2682---------------------------------------- 268312 May 2006. Summary of changes for version 20060512: 2684 26851) ACPI CA Core Subsystem: 2686 2687Replaced the AcpiOsQueueForExecution interface with a new interface named 2688AcpiOsExecute. The major difference is that the new interface does not have 2689a Priority parameter, this appeared to be useless and has been replaced by a 2690Type parameter. The Type tells the host what type of execution is being 2691requested, such as global lock handler, notify handler, GPE handler, etc. 2692This allows the host to queue and execute the request as appropriate for the 2693request type, possibly using different work queues and different priorities 2694for the various request types. This enables fixes for multithreading 2695deadlock problems such as BZ #5534, and will require changes to all existing 2696OS interface layers. (Alexey Starikovskiy and Bob Moore) 2697 2698Fixed a possible memory leak associated with the support for the so-called 2699"implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor 2700Suietov) 2701 2702Fixed a problem with the Load() operator where a table load from an 2703operation region could overwrite an internal table buffer by up to 7 bytes 2704and cause alignment faults on IPF systems. (With assistance from Luming Yu) 2705 2706Example Code and Data Size: These are the sizes for the OS-independent 2707acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2708debug version of the code includes the debug output trace mechanism and has 2709a much larger code and data size. 2710 2711 Previous Release: 2712 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 2713 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 2714 Current Release: 2715 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 2716 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 2717 2718 2719 27202) iASL Compiler/Disassembler and Tools: 2721 2722Disassembler: Implemented support to cross reference the internal namespace 2723and automatically generate ASL External() statements for symbols not defined 2724within the current table being disassembled. This will simplify the 2725disassembly and recompilation of interdependent tables such as SSDTs since 2726these statements will no longer have to be added manually. 2727 2728Disassembler: Implemented experimental support to automatically detect 2729invocations of external control methods and generate appropriate External() 2730statements. This is problematic because the AML cannot be correctly parsed 2731until the number of arguments for each control method is known. Currently, 2732standalone method invocations and invocations as the source operand of a 2733Store() statement are supported. 2734 2735Disassembler: Implemented support for the ASL pseudo-operators LNotEqual, 2736LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()), 2737LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code 2738more readable and likely closer to the original ASL source. 2739 2740---------------------------------------- 274121 April 2006. Summary of changes for version 20060421: 2742 27431) ACPI CA Core Subsystem: 2744 2745Removed a device initialization optimization introduced in 20051216 where 2746the _STA method was not run unless an _INI was also present for the same 2747device. This optimization could cause problems because it could allow _INI 2748methods to be run within a not-present device subtree. (If a not-present 2749device had no _INI, _STA would not be run, the not-present status would not 2750be discovered, and the children of the device would be incorrectly 2751traversed.) 2752 2753Implemented a new _STA optimization where namespace subtrees that do not 2754contain _INI are identified and ignored during device initialization. 2755Selectively running _STA can significantly improve boot time on large 2756machines (with assistance from Len Brown.) 2757 2758Implemented support for the device initialization case where the returned 2759_STA flags indicate a device not-present but functioning. In this case, _INI 2760is not run, but the device children are examined for presence, as per the 2761ACPI specification. 2762 2763Implemented an additional change to the IndexField support in order to 2764conform to MS behavior. The value written to the Index Register is not 2765simply a byte offset, it is a byte offset in units of the access width of 2766the parent Index Field. (Fiodor Suietov) 2767 2768Defined and deployed a new OSL interface, AcpiOsValidateAddress. This 2769interface is called during the creation of all AML operation regions, and 2770allows the host OS to exert control over what addresses it will allow the 2771AML code to access. Operation Regions whose addresses are disallowed will 2772cause a runtime exception when they are actually accessed (will not affect 2773or abort table loading.) See oswinxf or osunixxf for an example 2774implementation. 2775 2776Defined and deployed a new OSL interface, AcpiOsValidateInterface. This 2777interface allows the host OS to match the various "optional" 2778interface/behavior strings for the _OSI predefined control method as 2779appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf 2780for an example implementation. 2781 2782Restructured and corrected various problems in the exception handling code 2783paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod 2784(with assistance from Takayoshi Kochi.) 2785 2786Modified the Linux source converter to ignore quoted string literals while 2787converting identifiers from mixed to lower case. This will correct problems 2788with the disassembler and other areas where such strings must not be 2789modified. 2790 2791The ACPI_FUNCTION_* macros no longer require quotes around the function 2792name. This allows the Linux source converter to convert the names, now that 2793the converter ignores quoted strings. 2794 2795Example Code and Data Size: These are the sizes for the OS-independent 2796acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2797debug version of the code includes the debug output trace mechanism and has 2798a much larger code and data size. 2799 2800 Previous Release: 2801 2802 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 2803 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 2804 Current Release: 2805 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 2806 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 2807 2808 28092) iASL Compiler/Disassembler and Tools: 2810 2811Implemented 3 new warnings for iASL, and implemented multiple warning levels 2812(w2 flag). 2813 28141) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is not 2815WAIT_FOREVER (0xFFFF) and the code does not examine the return value to 2816check for the possible timeout, a warning is issued. 2817 28182) Useless operators: If an ASL operator does not specify an optional target 2819operand and it also does not use the function return value from the 2820operator, a warning is issued since the operator effectively does nothing. 2821 28223) Unreferenced objects: If a namespace object is created, but never 2823referenced, a warning is issued. This is a warning level 2 since there are 2824cases where this is ok, such as when a secondary table is loaded that uses 2825the unreferenced objects. Even so, care is taken to only flag objects that 2826don't look like they will ever be used. For example, the reserved methods 2827(starting with an underscore) are usually not referenced because it is 2828expected that the OS will invoke them. 2829 2830---------------------------------------- 283131 March 2006. Summary of changes for version 20060331: 2832 28331) ACPI CA Core Subsystem: 2834 2835Implemented header file support for the following additional ACPI tables: 2836ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this support, 2837all current and known ACPI tables are now defined in the ACPICA headers and 2838are available for use by device drivers and other software. 2839 2840Implemented support to allow tables that contain ACPI names with invalid 2841characters to be loaded. Previously, this would cause the table load to 2842fail, but since there are several known cases of such tables on existing 2843machines, this change was made to enable ACPI support for them. Also, this 2844matches the behavior of the Microsoft ACPI implementation. 2845 2846Fixed a couple regressions introduced during the memory optimization in the 284720060317 release. The namespace node definition required additional 2848reorganization and an internal datatype that had been changed to 8-bit was 2849restored to 32-bit. (Valery Podrezov) 2850 2851Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState 2852could be passed through to AcpiOsReleaseObject which is unexpected. Such 2853null pointers are now trapped and ignored, matching the behavior of the 2854previous implementation before the deployment of AcpiOsReleaseObject. 2855(Valery Podrezov, Fiodor Suietov) 2856 2857Fixed a memory mapping leak during the deletion of a SystemMemory operation 2858region where a cached memory mapping was not deleted. This became a 2859noticeable problem for operation regions that are defined within frequently 2860used control methods. (Dana Meyers) 2861 2862Reorganized the ACPI table header files into two main files: one for the 2863ACPI tables consumed by the ACPICA core, and another for the miscellaneous 2864ACPI tables that are consumed by the drivers and other software. The various 2865FADT definitions were merged into one common section and three different 2866tables (ACPI 1.0, 1.0+, and 2.0) 2867 2868Example Code and Data Size: These are the sizes for the OS-independent 2869acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2870debug version of the code includes the debug output trace mechanism and has 2871a much larger code and data size. 2872 2873 Previous Release: 2874 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 2875 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 2876 Current Release: 2877 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 2878 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 2879 2880 28812) iASL Compiler/Disassembler and Tools: 2882 2883Disassembler: Implemented support to decode and format all non-AML ACPI 2884tables (tables other than DSDTs and SSDTs.) This includes the new tables 2885added to the ACPICA headers, therefore all current and known ACPI tables are 2886supported. 2887 2888Disassembler: The change to allow ACPI names with invalid characters also 2889enables the disassembly of such tables. Invalid characters within names are 2890changed to '*' to make the name printable; the iASL compiler will still 2891generate an error for such names, however, since this is an invalid ACPI 2892character. 2893 2894Implemented an option for AcpiXtract (-a) to extract all tables found in the 2895input file. The default invocation extracts only the DSDTs and SSDTs. 2896 2897Fixed a couple of gcc generation issues for iASL and AcpiExec and added a 2898makefile for the AcpiXtract utility. 2899 2900---------------------------------------- 290117 March 2006. Summary of changes for version 20060317: 2902 29031) ACPI CA Core Subsystem: 2904 2905Implemented the use of a cache object for all internal namespace nodes. 2906Since there are about 1000 static nodes in a typical system, this will 2907decrease memory use for cache implementations that minimize per-allocation 2908overhead (such as a slab allocator.) 2909 2910Removed the reference count mechanism for internal namespace nodes, since it 2911was deemed unnecessary. This reduces the size of each namespace node by 2912about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit case, 2913and 32 bytes for the 64-bit case. 2914 2915Optimized several internal data structures to reduce object size on 64-bit 2916platforms by packing data within the 64-bit alignment. This includes the 2917frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static 2918instances corresponding to the namespace objects. 2919 2920Added two new strings for the predefined _OSI method: "Windows 2001.1 SP1" 2921and "Windows 2006". 2922 2923Split the allocation tracking mechanism out to a separate file, from 2924utalloc.c to uttrack.c. This mechanism appears to be only useful for 2925application-level code. Kernels may wish to not include uttrack.c in 2926distributions. 2927 2928Removed all remnants of the obsolete ACPI_REPORT_* macros and the associated 2929code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING 2930macros.) 2931 2932Code and Data Size: These are the sizes for the acpica.lib produced by the 2933Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 2934driver or OSPM code. The debug version of the code includes the debug output 2935trace mechanism and has a much larger code and data size. Note that these 2936values will vary depending on the efficiency of the compiler and the 2937compiler options used during generation. 2938 2939 Previous Release: 2940 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 2941 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 2942 Current Release: 2943 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 2944 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 2945 2946 29472) iASL Compiler/Disassembler and Tools: 2948 2949Implemented an ANSI C version of the acpixtract utility. This version will 2950automatically extract the DSDT and all SSDTs from the input acpidump text 2951file and dump the binary output to separate files. It can also display a 2952summary of the input file including the headers for each table found and 2953will extract any single ACPI table, with any signature. (See 2954source/tools/acpixtract) 2955 2956---------------------------------------- 295710 March 2006. Summary of changes for version 20060310: 2958 29591) ACPI CA Core Subsystem: 2960 2961Tagged all external interfaces to the subsystem with the new 2962ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to assist 2963kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL 2964macro. The default definition is NULL. 2965 2966Added the ACPI_THREAD_ID type for the return value from AcpiOsGetThreadId. 2967This allows the host to define this as necessary to simplify kernel 2968integration. The default definition is ACPI_NATIVE_UINT. 2969 2970Fixed two interpreter problems related to error processing, the deletion of 2971objects, and placing invalid pointers onto the internal operator result 2972stack. BZ 6028, 6151 (Valery Podrezov) 2973 2974Increased the reference count threshold where a warning is emitted for large 2975reference counts in order to eliminate unnecessary warnings on systems with 2976large namespaces (especially 64-bit.) Increased the value from 0x400 to 29770x800. 2978 2979Due to universal disagreement as to the meaning of the 'c' in the calloc() 2980function, the ACPI_MEM_CALLOCATE macro has been renamed to 2981ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'. 2982ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and 2983ACPI_FREE. 2984 2985Code and Data Size: These are the sizes for the acpica.lib produced by the 2986Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 2987driver or OSPM code. The debug version of the code includes the debug output 2988trace mechanism and has a much larger code and data size. Note that these 2989values will vary depending on the efficiency of the compiler and the 2990compiler options used during generation. 2991 2992 Previous Release: 2993 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 2994 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 2995 Current Release: 2996 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 2997 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 2998 2999 30002) iASL Compiler/Disassembler: 3001 3002Disassembler: implemented support for symbolic resource descriptor 3003references. If a CreateXxxxField operator references a fixed offset within a 3004resource descriptor, a name is assigned to the descriptor and the offset is 3005translated to the appropriate resource tag and pathname. The addition of 3006this support brings the disassembled code very close to the original ASL 3007source code and helps eliminate run-time errors when the disassembled code 3008is modified (and recompiled) in such a way as to invalidate the original 3009fixed offsets. 3010 3011Implemented support for a Descriptor Name as the last parameter to the ASL 3012Register() macro. This parameter was inadvertently left out of the ACPI 3013specification, and will be added for ACPI 3.0b. 3014 3015Fixed a problem where the use of the "_OSI" string (versus the full path 3016"\_OSI") caused an internal compiler error. ("No back ptr to op") 3017 3018Fixed a problem with the error message that occurs when an invalid string is 3019used for a _HID object (such as one with an embedded asterisk: "*PNP010A".) 3020The correct message is now displayed. 3021 3022---------------------------------------- 302317 February 2006. Summary of changes for version 20060217: 3024 30251) ACPI CA Core Subsystem: 3026 3027Implemented a change to the IndexField support to match the behavior of the 3028Microsoft AML interpreter. The value written to the Index register is now a 3029byte offset, no longer an index based upon the width of the Data register. 3030This should fix IndexField problems seen on some machines where the Data 3031register is not exactly one byte wide. The ACPI specification will be 3032clarified on this point. 3033 3034Fixed a problem where several resource descriptor types could overrun the 3035internal descriptor buffer due to size miscalculation: VendorShort, 3036VendorLong, and Interrupt. This was noticed on IA64 machines, but could 3037affect all platforms. 3038 3039Fixed a problem where individual resource descriptors were misaligned within 3040the internal buffer, causing alignment faults on IA64 platforms. 3041 3042Code and Data Size: These are the sizes for the acpica.lib produced by the 3043Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 3044driver or OSPM code. The debug version of the code includes the debug output 3045trace mechanism and has a much larger code and data size. Note that these 3046values will vary depending on the efficiency of the compiler and the 3047compiler options used during generation. 3048 3049 Previous Release: 3050 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 3051 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 3052 Current Release: 3053 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 3054 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 3055 3056 30572) iASL Compiler/Disassembler: 3058 3059Implemented support for new reserved names: _WDG and _WED are Microsoft 3060extensions for Windows Instrumentation Management, _TDL is a new ACPI- 3061defined method (Throttling Depth Limit.) 3062 3063Fixed a problem where a zero-length VendorShort or VendorLong resource 3064descriptor was incorrectly emitted as a descriptor of length one. 3065 3066---------------------------------------- 306710 February 2006. Summary of changes for version 20060210: 3068 30691) ACPI CA Core Subsystem: 3070 3071Removed a couple of extraneous ACPI_ERROR messages that appeared during 3072normal execution. These became apparent after the conversion from 3073ACPI_DEBUG_PRINT. 3074 3075Fixed a problem where the CreateField operator could hang if the BitIndex or 3076NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359) 3077 3078Fixed a problem where a DeRefOf operation on a buffer object incorrectly 3079failed with an exception. This also fixes a couple of related RefOf and 3080DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387) 3081 3082Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead of 3083AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, BZ 30845480) 3085 3086Implemented a memory cleanup at the end of the execution of each iteration 3087of an AML While() loop, preventing the accumulation of outstanding objects. 3088(Valery Podrezov, BZ 5427) 3089 3090Eliminated a chunk of duplicate code in the object resolution code. (Valery 3091Podrezov, BZ 5336) 3092 3093Fixed several warnings during the 64-bit code generation. 3094 3095The AcpiSrc source code conversion tool now inserts one line of whitespace 3096after an if() statement that is followed immediately by a comment, improving 3097readability of the Linux code. 3098 3099Code and Data Size: The current and previous library sizes for the core 3100subsystem are shown below. These are the code and data sizes for the 3101acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3102values do not include any ACPI driver or OSPM code. The debug version of the 3103code includes the debug output trace mechanism and has a much larger code 3104and data size. Note that these values will vary depending on the efficiency 3105of the compiler and the compiler options used during generation. 3106 3107 Previous Release: 3108 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 3109 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 3110 Current Release: 3111 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 3112 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 3113 3114 31152) iASL Compiler/Disassembler: 3116 3117Fixed a problem with the disassembly of a BankField operator with a complex 3118expression for the BankValue parameter. 3119 3120---------------------------------------- 312127 January 2006. Summary of changes for version 20060127: 3122 31231) ACPI CA Core Subsystem: 3124 3125Implemented support in the Resource Manager to allow unresolved namestring 3126references within resource package objects for the _PRT method. This support 3127is in addition to the previously implemented unresolved reference support 3128within the AML parser. If the interpreter slack mode is enabled, these 3129unresolved references will be passed through to the caller as a NULL package 3130entry. 3131 3132Implemented and deployed new macros and functions for error and warning 3133messages across the subsystem. These macros are simpler and generate less 3134code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION, 3135ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older 3136macros remain defined to allow ACPI drivers time to migrate to the new 3137macros. 3138 3139Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of the 3140Acquire/Release Lock OSL interfaces. 3141 3142Fixed a problem where Alias ASL operators are sometimes not correctly 3143resolved, in both the interpreter and the iASL compiler. 3144 3145Fixed several problems with the implementation of the ConcatenateResTemplate 3146ASL operator. As per the ACPI specification, zero length buffers are now 3147treated as a single EndTag. One-length buffers always cause a fatal 3148exception. Non-zero length buffers that do not end with a full 2-byte EndTag 3149cause a fatal exception. 3150 3151Fixed a possible structure overwrite in the AcpiGetObjectInfo external 3152interface. (With assistance from Thomas Renninger) 3153 3154Code and Data Size: The current and previous library sizes for the core 3155subsystem are shown below. These are the code and data sizes for the 3156acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3157values do not include any ACPI driver or OSPM code. The debug version of the 3158code includes the debug output trace mechanism and has a much larger code 3159and data size. Note that these values will vary depending on the efficiency 3160of the compiler and the compiler options used during generation. 3161 3162 Previous Release: 3163 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 3164 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 3165 Current Release: 3166 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 3167 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 3168 3169 31702) iASL Compiler/Disassembler: 3171 3172Fixed an internal error that was generated for any forward references to ASL 3173Alias objects. 3174 3175---------------------------------------- 317613 January 2006. Summary of changes for version 20060113: 3177 31781) ACPI CA Core Subsystem: 3179 3180Added 2006 copyright to all module headers and signons. This affects 3181virtually every file in the ACPICA core subsystem, iASL compiler, and the 3182utilities. 3183 3184Enhanced the ACPICA error reporting in order to simplify user migration to 3185the non-debug version of ACPICA. Replaced all instances of the 3186ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN debug 3187levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros, 3188respectively. This preserves all error and warning messages in the non-debug 3189version of the ACPICA code (this has been referred to as the "debug lite" 3190option.) Over 200 cases were converted to create a total of over 380 3191error/warning messages across the ACPICA code. This increases the code and 3192data size of the default non-debug version of the code somewhat (about 13K), 3193but all error/warning reporting may be disabled if desired (and code 3194eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time 3195configuration option. The size of the debug version of ACPICA remains about 3196the same. 3197 3198Fixed a memory leak within the AML Debugger "Set" command. One object was 3199not properly deleted for every successful invocation of the command. 3200 3201Code and Data Size: The current and previous library sizes for the core 3202subsystem are shown below. These are the code and data sizes for the 3203acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3204values do not include any ACPI driver or OSPM code. The debug version of the 3205code includes the debug output trace mechanism and has a much larger code 3206and data size. Note that these values will vary depending on the efficiency 3207of the compiler and the compiler options used during generation. 3208 3209 Previous Release: 3210 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 3211 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 3212 Current Release: 3213 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 3214 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 3215 3216 32172) iASL Compiler/Disassembler: 3218 3219The compiler now officially supports the ACPI 3.0a specification that was 3220released on December 30, 2005. (Specification is available at www.acpi.info) 3221 3222---------------------------------------- 322316 December 2005. Summary of changes for version 20051216: 3224 32251) ACPI CA Core Subsystem: 3226 3227Implemented optional support to allow unresolved names within ASL Package 3228objects. A null object is inserted in the package when a named reference 3229cannot be located in the current namespace. Enabled via the interpreter 3230slack flag, this should eliminate AE_NOT_FOUND exceptions seen on machines 3231that contain such code. 3232 3233Implemented an optimization to the initialization sequence that can improve 3234boot time. During ACPI device initialization, the _STA method is now run if 3235and only if the _INI method exists. The _STA method is used to determine if 3236the device is present; An _INI can only be run if _STA returns present, but 3237it is a waste of time to run the _STA method if the _INI does not exist. 3238(Prototype and assistance from Dong Wei) 3239 3240Implemented use of the C99 uintptr_t for the pointer casting macros if it is 3241available in the current compiler. Otherwise, the default (void *) cast is 3242used as before. 3243 3244Fixed some possible memory leaks found within the execution path of the 3245Break, Continue, If, and CreateField operators. (Valery Podrezov) 3246 3247Fixed a problem introduced in the 20051202 release where an exception is 3248generated during method execution if a control method attempts to declare 3249another method. 3250 3251Moved resource descriptor string constants that are used by both the AML 3252disassembler and AML debugger to the common utilities directory so that 3253these components are independent. 3254 3255Implemented support in the AcpiExec utility (-e switch) to globally ignore 3256exceptions during control method execution (method is not aborted.) 3257 3258Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix 3259generation. 3260 3261Code and Data Size: The current and previous library sizes for the core 3262subsystem are shown below. These are the code and data sizes for the 3263acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3264values do not include any ACPI driver or OSPM code. The debug version of the 3265code includes the debug output trace mechanism and has a much larger code 3266and data size. Note that these values will vary depending on the efficiency 3267of the compiler and the compiler options used during generation. 3268 3269 Previous Release: 3270 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 3271 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 3272 Current Release: 3273 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 3274 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 3275 3276 32772) iASL Compiler/Disassembler: 3278 3279Fixed a problem where a CPU stack overflow fault could occur if a recursive 3280method call was made from within a Return statement. 3281 3282---------------------------------------- 328302 December 2005. Summary of changes for version 20051202: 3284 32851) ACPI CA Core Subsystem: 3286 3287Modified the parsing of control methods to no longer create namespace 3288objects during the first pass of the parse. Objects are now created only 3289during the execute phase, at the moment the namespace creation operator is 3290encountered in the AML (Name, OperationRegion, CreateByteField, etc.) This 3291should eliminate ALREADY_EXISTS exceptions seen on some machines where 3292reentrant control methods are protected by an AML mutex. The mutex will now 3293correctly block multiple threads from attempting to create the same object 3294more than once. 3295 3296Increased the number of available Owner Ids for namespace object tracking 3297from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen on 3298some machines with a large number of ACPI tables (either static or dynamic). 3299 3300Fixed a problem with the AcpiExec utility where a fault could occur when the 3301-b switch (batch mode) is used. 3302 3303Enhanced the namespace dump routine to output the owner ID for each 3304namespace object. 3305 3306Code and Data Size: The current and previous library sizes for the core 3307subsystem are shown below. These are the code and data sizes for the 3308acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3309values do not include any ACPI driver or OSPM code. The debug version of the 3310code includes the debug output trace mechanism and has a much larger code 3311and data size. Note that these values will vary depending on the efficiency 3312of the compiler and the compiler options used during generation. 3313 3314 Previous Release: 3315 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 3316 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 3317 Current Release: 3318 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 3319 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 3320 3321 33222) iASL Compiler/Disassembler: 3323 3324Fixed a parse error during compilation of certain Switch/Case constructs. To 3325simplify the parse, the grammar now allows for multiple Default statements 3326and this error is now detected and flagged during the analysis phase. 3327 3328Disassembler: The disassembly now includes the contents of the original 3329table header within a comment at the start of the file. This includes the 3330name and version of the original ASL compiler. 3331 3332---------------------------------------- 333317 November 2005. Summary of changes for version 20051117: 3334 33351) ACPI CA Core Subsystem: 3336 3337Fixed a problem in the AML parser where the method thread count could be 3338decremented below zero if any errors occurred during the method parse phase. 3339This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some machines. 3340This also fixed a related regression with the mechanism that detects and 3341corrects methods that cannot properly handle reentrancy (related to the 3342deployment of the new OwnerId mechanism.) 3343 3344Eliminated the pre-parsing of control methods (to detect errors) during 3345table load. Related to the problem above, this was causing unwind issues if 3346any errors occurred during the parse, and it seemed to be overkill. A table 3347load should not be aborted if there are problems with any single control 3348method, thus rendering this feature rather pointless. 3349 3350Fixed a problem with the new table-driven resource manager where an internal 3351buffer overflow could occur for small resource templates. 3352 3353Implemented a new external interface, AcpiGetVendorResource. This interface 3354will find and return a vendor-defined resource descriptor within a _CRS or 3355_PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn Helgaas. 3356 3357Removed the length limit (200) on string objects as per the upcoming ACPI 33583.0A specification. This affects the following areas of the interpreter: 1) 3359any implicit conversion of a Buffer to a String, 2) a String object result 3360of the ASL Concatentate operator, 3) the String object result of the ASL 3361ToString operator. 3362 3363Fixed a problem in the Windows OS interface layer (OSL) where a WAIT_FOREVER 3364on a semaphore object would incorrectly timeout. This allows the 3365multithreading features of the AcpiExec utility to work properly under 3366Windows. 3367 3368Updated the Linux makefiles for the iASL compiler and AcpiExec to include 3369the recently added file named "utresrc.c". 3370 3371Code and Data Size: The current and previous library sizes for the core 3372subsystem are shown below. These are the code and data sizes for the 3373acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3374values do not include any ACPI driver or OSPM code. The debug version of the 3375code includes the debug output trace mechanism and has a much larger code 3376and data size. Note that these values will vary depending on the efficiency 3377of the compiler and the compiler options used during generation. 3378 3379 Previous Release: 3380 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 3381 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 3382 Current Release: 3383 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 3384 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 3385 3386 33872) iASL Compiler/Disassembler: 3388 3389Removed the limit (200) on string objects as per the upcoming ACPI 3.0A 3390specification. For the iASL compiler, this means that string literals within 3391the source ASL can be of any length. 3392 3393Enhanced the listing output to dump the AML code for resource descriptors 3394immediately after the ASL code for each descriptor, instead of in a block at 3395the end of the entire resource template. 3396 3397Enhanced the compiler debug output to dump the entire original parse tree 3398constructed during the parse phase, before any transforms are applied to the 3399tree. The transformed tree is dumped also. 3400 3401---------------------------------------- 340202 November 2005. Summary of changes for version 20051102: 3403 34041) ACPI CA Core Subsystem: 3405 3406Modified the subsystem initialization sequence to improve GPE support. The 3407GPE initialization has been split into two parts in order to defer execution 3408of the _PRW methods (Power Resources for Wake) until after the hardware is 3409fully initialized and the SCI handler is installed. This allows the _PRW 3410methods to access fields protected by the Global Lock. This will fix systems 3411where a NO_GLOBAL_LOCK exception has been seen during initialization. 3412 3413Converted the ACPI internal object disassemble and display code within the 3414AML debugger to fully table-driven operation, reducing code size and 3415increasing maintainability. 3416 3417Fixed a regression with the ConcatenateResTemplate() ASL operator introduced 3418in the 20051021 release. 3419 3420Implemented support for "local" internal ACPI object types within the 3421debugger "Object" command and the AcpiWalkNamespace external interfaces. 3422These local types include RegionFields, BankFields, IndexFields, Alias, and 3423reference objects. 3424 3425Moved common AML resource handling code into a new file, "utresrc.c". This 3426code is shared by both the Resource Manager and the AML Debugger. 3427 3428Code and Data Size: The current and previous library sizes for the core 3429subsystem are shown below. These are the code and data sizes for the 3430acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3431values do not include any ACPI driver or OSPM code. The debug version of the 3432code includes the debug output trace mechanism and has a much larger code 3433and data size. Note that these values will vary depending on the efficiency 3434of the compiler and the compiler options used during generation. 3435 3436 Previous Release: 3437 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 3438 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 3439 Current Release: 3440 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 3441 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 3442 3443 34442) iASL Compiler/Disassembler: 3445 3446Fixed a problem with very large initializer lists (more than 4000 elements) 3447for both Buffer and Package objects where the parse stack could overflow. 3448 3449Enhanced the pre-compile source code scan for non-ASCII characters to ignore 3450characters within comment fields. The scan is now always performed and is no 3451longer optional, detecting invalid characters within a source file 3452immediately rather than during the parse phase or later. 3453 3454Enhanced the ASL grammar definition to force early reductions on all list- 3455style grammar elements so that the overall parse stack usage is greatly 3456reduced. This should improve performance and reduce the possibility of parse 3457stack overflow. 3458 3459Eliminated all reduce/reduce conflicts in the iASL parser generation. Also, 3460with the addition of a %expected statement, the compiler generates from 3461source with no warnings. 3462 3463Fixed a possible segment fault in the disassembler if the input filename 3464does not contain a "dot" extension (Thomas Renninger). 3465 3466---------------------------------------- 346721 October 2005. Summary of changes for version 20051021: 3468 34691) ACPI CA Core Subsystem: 3470 3471Implemented support for the EM64T and other x86-64 processors. This 3472essentially entails recognizing that these processors support non-aligned 3473memory transfers. Previously, all 64-bit processors were assumed to lack 3474hardware support for non-aligned transfers. 3475 3476Completed conversion of the Resource Manager to nearly full table-driven 3477operation. Specifically, the resource conversion code (convert AML to 3478internal format and the reverse) and the debug code to dump internal 3479resource descriptors are fully table-driven, reducing code and data size and 3480improving maintainability. 3481 3482The OSL interfaces for Acquire and Release Lock now use a 64-bit flag word 3483on 64-bit processors instead of a fixed 32-bit word. (With assistance from 3484Alexey Starikovskiy) 3485 3486Implemented support within the resource conversion code for the Type- 3487Specific byte within the various ACPI 3.0 *WordSpace macros. 3488 3489Fixed some issues within the resource conversion code for the type-specific 3490flags for both Memory and I/O address resource descriptors. For Memory, 3491implemented support for the MTP and TTP flags. For I/O, split the TRS and 3492TTP flags into two separate fields. 3493 3494Code and Data Size: The current and previous library sizes for the core 3495subsystem are shown below. These are the code and data sizes for the 3496acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3497values do not include any ACPI driver or OSPM code. The debug version of the 3498code includes the debug output trace mechanism and has a much larger code 3499and data size. Note that these values will vary depending on the efficiency 3500of the compiler and the compiler options used during generation. 3501 3502 Previous Release: 3503 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 3504 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 3505 Current Release: 3506 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 3507 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 3508 3509 3510 35112) iASL Compiler/Disassembler: 3512 3513Relaxed a compiler restriction that disallowed a ResourceIndex byte if the 3514corresponding ResourceSource string was not also present in a resource 3515descriptor declaration. This restriction caused problems with existing 3516AML/ASL code that includes the Index byte without the string. When such AML 3517was disassembled, it could not be compiled without modification. Further, 3518the modified code created a resource template with a different size than the 3519original, breaking code that used fixed offsets into the resource template 3520buffer. 3521 3522Removed a recent feature of the disassembler to ignore a lone ResourceIndex 3523byte. This byte is now emitted if present so that the exact AML can be 3524reproduced when the disassembled code is recompiled. 3525 3526Improved comments and text alignment for the resource descriptor code 3527emitted by the disassembler. 3528 3529Implemented disassembler support for the ACPI 3.0 AccessSize field within a 3530Register() resource descriptor. 3531 3532---------------------------------------- 353330 September 2005. Summary of changes for version 20050930: 3534 35351) ACPI CA Core Subsystem: 3536 3537Completed a major overhaul of the Resource Manager code - specifically, 3538optimizations in the area of the AML/internal resource conversion code. The 3539code has been optimized to simplify and eliminate duplicated code, CPU stack 3540use has been decreased by optimizing function parameters and local 3541variables, and naming conventions across the manager have been standardized 3542for clarity and ease of maintenance (this includes function, parameter, 3543variable, and struct/typedef names.) The update may force changes in some 3544driver code, depending on how resources are handled by the host OS. 3545 3546All Resource Manager dispatch and information tables have been moved to a 3547single location for clarity and ease of maintenance. One new file was 3548created, named "rsinfo.c". 3549 3550The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to 3551guarantee that the argument is not evaluated twice, making them less prone 3552to macro side-effects. However, since there exists the possibility of 3553additional stack use if a particular compiler cannot optimize them (such as 3554in the debug generation case), the original macros are optionally available. 3555Note that some invocations of the return_VALUE macro may now cause size 3556mismatch warnings; the return_UINT8 and return_UINT32 macros are provided to 3557eliminate these. (From Randy Dunlap) 3558 3559Implemented a new mechanism to enable debug tracing for individual control 3560methods. A new external interface, AcpiDebugTrace, is provided to enable 3561this mechanism. The intent is to allow the host OS to easily enable and 3562disable tracing for problematic control methods. This interface can be 3563easily exposed to a user or debugger interface if desired. See the file 3564psxface.c for details. 3565 3566AcpiUtCallocate will now return a valid pointer if a length of zero is 3567specified - a length of one is used and a warning is issued. This matches 3568the behavior of AcpiUtAllocate. 3569 3570Code and Data Size: The current and previous library sizes for the core 3571subsystem are shown below. These are the code and data sizes for the 3572acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3573values do not include any ACPI driver or OSPM code. The debug version of the 3574code includes the debug output trace mechanism and has a much larger code 3575and data size. Note that these values will vary depending on the efficiency 3576of the compiler and the compiler options used during generation. 3577 3578 Previous Release: 3579 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 3580 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 3581 Current Release: 3582 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 3583 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 3584 3585 35862) iASL Compiler/Disassembler: 3587 3588A remark is issued if the effective compile-time length of a package or 3589buffer is zero. Previously, this was a warning. 3590 3591---------------------------------------- 359216 September 2005. Summary of changes for version 20050916: 3593 35941) ACPI CA Core Subsystem: 3595 3596Fixed a problem within the Resource Manager where support for the Generic 3597Register descriptor was not fully implemented. This descriptor is now fully 3598recognized, parsed, disassembled, and displayed. 3599 3600Completely restructured the Resource Manager code to utilize table-driven 3601dispatch and lookup, eliminating many of the large switch() statements. This 3602reduces overall subsystem code size and code complexity. Affects the 3603resource parsing and construction, disassembly, and debug dump output. 3604 3605Cleaned up and restructured the debug dump output for all resource 3606descriptors. Improved readability of the output and reduced code size. 3607 3608Fixed a problem where changes to internal data structures caused the 3609optional ACPI_MUTEX_DEBUG code to fail compilation if specified. 3610 3611Code and Data Size: The current and previous library sizes for the core 3612subsystem are shown below. These are the code and data sizes for the 3613acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3614values do not include any ACPI driver or OSPM code. The debug version of the 3615code includes the debug output trace mechanism and has a much larger code 3616and data size. Note that these values will vary depending on the efficiency 3617of the compiler and the compiler options used during generation. 3618 3619 Previous Release: 3620 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 3621 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 3622 Current Release: 3623 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 3624 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 3625 3626 36272) iASL Compiler/Disassembler: 3628 3629Updated the disassembler to automatically insert an EndDependentFn() macro 3630into the ASL stream if this macro is missing in the original AML code, 3631simplifying compilation of the resulting ASL module. 3632 3633Fixed a problem in the disassembler where a disassembled ResourceSource 3634string (within a large resource descriptor) was not surrounded by quotes and 3635not followed by a comma, causing errors when the resulting ASL module was 3636compiled. Also, escape sequences within a ResourceSource string are now 3637handled correctly (especially "\\") 3638 3639---------------------------------------- 364002 September 2005. Summary of changes for version 20050902: 3641 36421) ACPI CA Core Subsystem: 3643 3644Fixed a problem with the internal Owner ID allocation and deallocation 3645mechanisms for control method execution and recursive method invocation. 3646This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId" 3647messages seen on some systems. Recursive method invocation depth is 3648currently limited to 255. (Alexey Starikovskiy) 3649 3650Completely eliminated all vestiges of support for the "module-level 3651executable code" until this support is fully implemented and debugged. This 3652should eliminate the NO_RETURN_VALUE exceptions seen during table load on 3653some systems that invoke this support. 3654 3655Fixed a problem within the resource manager code where the transaction flags 3656for a 64-bit address descriptor were handled incorrectly in the type- 3657specific flag byte. 3658 3659Consolidated duplicate code within the address descriptor resource manager 3660code, reducing overall subsystem code size. 3661 3662Fixed a fault when using the AML debugger "disassemble" command to 3663disassemble individual control methods. 3664 3665Removed references to the "release_current" directory within the Unix 3666release package. 3667 3668Code and Data Size: The current and previous core subsystem library sizes 3669are shown below. These are the code and data sizes for the acpica.lib 3670produced by the Microsoft Visual C++ 6.0 compiler. These values do not 3671include any ACPI driver or OSPM code. The debug version of the code includes 3672the debug output trace mechanism and has a much larger code and data size. 3673Note that these values will vary depending on the efficiency of the compiler 3674and the compiler options used during generation. 3675 3676 Previous Release: 3677 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 3678 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 3679 Current Release: 3680 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 3681 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 3682 3683 36842) iASL Compiler/Disassembler: 3685 3686Implemented an error check for illegal duplicate values in the interrupt and 3687dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and 3688Interrupt(). 3689 3690Implemented error checking for the Irq() and IrqNoFlags() macros to detect 3691too many values in the interrupt list (16 max) and invalid values in the 3692list (range 0 - 15) 3693 3694The maximum length string literal within an ASL file is now restricted to 3695200 characters as per the ACPI specification. 3696 3697Fixed a fault when using the -ln option (generate namespace listing). 3698 3699Implemented an error check to determine if a DescriptorName within a 3700resource descriptor has already been used within the current scope. 3701 3702---------------------------------------- 370315 August 2005. Summary of changes for version 20050815: 3704 37051) ACPI CA Core Subsystem: 3706 3707Implemented a full bytewise compare to determine if a table load request is 3708attempting to load a duplicate table. The compare is performed if the table 3709signatures and table lengths match. This will allow different tables with 3710the same OEM Table ID and revision to be loaded - probably against the ACPI 3711specification, but discovered in the field nonetheless. 3712 3713Added the changes.txt logfile to each of the zipped release packages. 3714 3715Code and Data Size: Current and previous core subsystem library sizes are 3716shown below. These are the code and data sizes for the acpica.lib produced 3717by the Microsoft Visual C++ 6.0 compiler, and these values do not include 3718any ACPI driver or OSPM code. The debug version of the code includes the 3719debug output trace mechanism and has a much larger code and data size. Note 3720that these values will vary depending on the efficiency of the compiler and 3721the compiler options used during generation. 3722 3723 Previous Release: 3724 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 3725 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 3726 Current Release: 3727 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 3728 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 3729 3730 37312) iASL Compiler/Disassembler: 3732 3733Fixed a problem where incorrect AML code could be generated for Package 3734objects if optimization is disabled (via the -oa switch). 3735 3736Fixed a problem with where incorrect AML code is generated for variable- 3737length packages when the package length is not specified and the number of 3738initializer values is greater than 255. 3739 3740 3741---------------------------------------- 374229 July 2005. Summary of changes for version 20050729: 3743 37441) ACPI CA Core Subsystem: 3745 3746Implemented support to ignore an attempt to install/load a particular ACPI 3747table more than once. Apparently there exists BIOS code that repeatedly 3748attempts to load the same SSDT upon certain events. With assistance from 3749Venkatesh Pallipadi. 3750 3751Restructured the main interface to the AML parser in order to correctly 3752handle all exceptional conditions. This will prevent leakage of the OwnerId 3753resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on some 3754machines. With assistance from Alexey Starikovskiy. 3755 3756Support for "module level code" has been disabled in this version due to a 3757number of issues that have appeared on various machines. The support can be 3758enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem 3759compilation. When the issues are fully resolved, the code will be enabled by 3760default again. 3761 3762Modified the internal functions for debug print support to define the 3763FunctionName parameter as a (const char *) for compatibility with compiler 3764built-in macros such as __FUNCTION__, etc. 3765 3766Linted the entire ACPICA source tree for both 32-bit and 64-bit. 3767 3768Implemented support to display an object count summary for the AML Debugger 3769commands Object and Methods. 3770 3771Code and Data Size: Current and previous core subsystem library sizes are 3772shown below. These are the code and data sizes for the acpica.lib produced 3773by the Microsoft Visual C++ 6.0 compiler, and these values do not include 3774any ACPI driver or OSPM code. The debug version of the code includes the 3775debug output trace mechanism and has a much larger code and data size. Note 3776that these values will vary depending on the efficiency of the compiler and 3777the compiler options used during generation. 3778 3779 Previous Release: 3780 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 3781 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 3782 Current Release: 3783 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 3784 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 3785 3786 37872) iASL Compiler/Disassembler: 3788 3789Fixed a regression that appeared in the 20050708 version of the compiler 3790where an error message was inadvertently emitted for invocations of the _OSI 3791reserved control method. 3792 3793---------------------------------------- 379408 July 2005. Summary of changes for version 20050708: 3795 37961) ACPI CA Core Subsystem: 3797 3798The use of the CPU stack in the debug version of the subsystem has been 3799considerably reduced. Previously, a debug structure was declared in every 3800function that used the debug macros. This structure has been removed in 3801favor of declaring the individual elements as parameters to the debug 3802functions. This reduces the cumulative stack use during nested execution of 3803ACPI function calls at the cost of a small increase in the code size of the 3804debug version of the subsystem. With assistance from Alexey Starikovskiy and 3805Len Brown. 3806 3807Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent 3808headers to define a macro that will return the current function name at 3809runtime (such as __FUNCTION__ or _func_, etc.) The function name is used by 3810the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the 3811compiler-dependent header, the function name is saved on the CPU stack (one 3812pointer per function.) This mechanism is used because apparently there 3813exists no standard ANSI-C defined macro that that returns the function name. 3814 3815Redesigned and reimplemented the "Owner ID" mechanism used to track 3816namespace objects created/deleted by ACPI tables and control method 3817execution. A bitmap is now used to allocate and free the IDs, thus solving 3818the wraparound problem present in the previous implementation. The size of 3819the namespace node descriptor was reduced by 2 bytes as a result (Alexey 3820Starikovskiy). 3821 3822Removed the UINT32_BIT and UINT16_BIT types that were used for the bitfield 3823flag definitions within the headers for the predefined ACPI tables. These 3824have been replaced by UINT8_BIT in order to increase the code portability of 3825the subsystem. If the use of UINT8 remains a problem, we may be forced to 3826eliminate bitfields entirely because of a lack of portability. 3827 3828Enhanced the performance of the AcpiUtUpdateObjectReference procedure. This 3829is a frequently used function and this improvement increases the performance 3830of the entire subsystem (Alexey Starikovskiy). 3831 3832Fixed several possible memory leaks and the inverse - premature object 3833deletion (Alexey Starikovskiy). 3834 3835Code and Data Size: Current and previous core subsystem library sizes are 3836shown below. These are the code and data sizes for the acpica.lib produced 3837by the Microsoft Visual C++ 6.0 compiler, and these values do not include 3838any ACPI driver or OSPM code. The debug version of the code includes the 3839debug output trace mechanism and has a much larger code and data size. Note 3840that these values will vary depending on the efficiency of the compiler and 3841the compiler options used during generation. 3842 3843 Previous Release: 3844 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 3845 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 3846 Current Release: 3847 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 3848 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 3849 3850---------------------------------------- 385124 June 2005. Summary of changes for version 20050624: 3852 38531) ACPI CA Core Subsystem: 3854 3855Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for 3856the host-defined cache object. This allows the OSL implementation to define 3857and type this object in any manner desired, simplifying the OSL 3858implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for 3859Linux, and should be defined in the OS-specific header file for other 3860operating systems as required. 3861 3862Changed the interface to AcpiOsAcquireObject to directly return the 3863requested object as the function return (instead of ACPI_STATUS.) This 3864change was made for performance reasons, since this is the purpose of the 3865interface in the first place. AcpiOsAcquireObject is now similar to the 3866AcpiOsAllocate interface. 3867 3868Implemented a new AML debugger command named Businfo. This command displays 3869information about all devices that have an associate _PRT object. The _ADR, 3870_HID, _UID, and _CID are displayed for these devices. 3871 3872Modified the initialization sequence in AcpiInitializeSubsystem to call the 3873OSL interface AcpiOslInitialize first, before any local initialization. This 3874change was required because the global initialization now calls OSL 3875interfaces. 3876 3877Enhanced the Dump command to display the entire contents of Package objects 3878(including all sub-objects and their values.) 3879 3880Restructured the code base to split some files because of size and/or 3881because the code logically belonged in a separate file. New files are listed 3882below. All makefiles and project files included in the ACPI CA release have 3883been updated. 3884 utilities/utcache.c /* Local cache interfaces */ 3885 utilities/utmutex.c /* Local mutex support */ 3886 utilities/utstate.c /* State object support */ 3887 interpreter/parser/psloop.c /* Main AML parse loop */ 3888 3889Code and Data Size: Current and previous core subsystem library sizes are 3890shown below. These are the code and data sizes for the acpica.lib produced 3891by the Microsoft Visual C++ 6.0 compiler, and these values do not include 3892any ACPI driver or OSPM code. The debug version of the code includes the 3893debug output trace mechanism and has a much larger code and data size. Note 3894that these values will vary depending on the efficiency of the compiler and 3895the compiler options used during generation. 3896 3897 Previous Release: 3898 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 3899 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 3900 Current Release: 3901 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 3902 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 3903 3904 39052) iASL Compiler/Disassembler: 3906 3907Fixed a regression introduced in version 20050513 where the use of a Package 3908object within a Case() statement caused a compile time exception. The 3909original behavior has been restored (a Match() operator is emitted.) 3910 3911---------------------------------------- 391217 June 2005. Summary of changes for version 20050617: 3913 39141) ACPI CA Core Subsystem: 3915 3916Moved the object cache operations into the OS interface layer (OSL) to allow 3917the host OS to handle these operations if desired (for example, the Linux 3918OSL will invoke the slab allocator). This support is optional; the compile 3919time define ACPI_USE_LOCAL_CACHE may be used to utilize the original cache 3920code in the ACPI CA core. The new OSL interfaces are shown below. See 3921utalloc.c for an example implementation, and acpiosxf.h for the exact 3922interface definitions. With assistance from Alexey Starikovskiy. 3923 AcpiOsCreateCache 3924 AcpiOsDeleteCache 3925 AcpiOsPurgeCache 3926 AcpiOsAcquireObject 3927 AcpiOsReleaseObject 3928 3929Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to return 3930and restore a flags parameter. This fits better with many OS lock models. 3931Note: the current execution state (interrupt handler or not) is no longer 3932passed to these interfaces. If necessary, the OSL must determine this state 3933by itself, a simple and fast operation. With assistance from Alexey 3934Starikovskiy. 3935 3936Fixed a problem in the ACPI table handling where a valid XSDT was assumed 3937present if the revision of the RSDP was 2 or greater. According to the ACPI 3938specification, the XSDT is optional in all cases, and the table manager 3939therefore now checks for both an RSDP >=2 and a valid XSDT pointer. 3940Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs contain 3941only the RSDT. 3942 3943Fixed an interpreter problem with the Mid() operator in the case of an input 3944string where the resulting output string is of zero length. It now correctly 3945returns a valid, null terminated string object instead of a string object 3946with a null pointer. 3947 3948Fixed a problem with the control method argument handling to allow a store 3949to an Arg object that already contains an object of type Device. The Device 3950object is now correctly overwritten. Previously, an error was returned. 3951 3952 3953Enhanced the debugger Find command to emit object values in addition to the 3954found object pathnames. The output format is the same as the dump namespace 3955command. 3956 3957Enhanced the debugger Set command. It now has the ability to set the value 3958of any Named integer object in the namespace (Previously, only method locals 3959and args could be set.) 3960 3961Code and Data Size: Current and previous core subsystem library sizes are 3962shown below. These are the code and data sizes for the acpica.lib produced 3963by the Microsoft Visual C++ 6.0 compiler, and these values do not include 3964any ACPI driver or OSPM code. The debug version of the code includes the 3965debug output trace mechanism and has a much larger code and data size. Note 3966that these values will vary depending on the efficiency of the compiler and 3967the compiler options used during generation. 3968 3969 Previous Release: 3970 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 3971 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 3972 Current Release: 3973 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 3974 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 3975 3976 39772) iASL Compiler/Disassembler: 3978 3979Fixed a regression in the disassembler where if/else/while constructs were 3980output incorrectly. This problem was introduced in the previous release 3981(20050526). This problem also affected the single-step disassembly in the 3982debugger. 3983 3984Fixed a problem where compiling the reserved _OSI method would randomly (but 3985rarely) produce compile errors. 3986 3987Enhanced the disassembler to emit compilable code in the face of incorrect 3988AML resource descriptors. If the optional ResourceSourceIndex is present, 3989but the ResourceSource is not, do not emit the ResourceSourceIndex in the 3990disassembly. Otherwise, the resulting code cannot be compiled without 3991errors. 3992 3993---------------------------------------- 399426 May 2005. Summary of changes for version 20050526: 3995 39961) ACPI CA Core Subsystem: 3997 3998Implemented support to execute Type 1 and Type 2 AML opcodes appearing at 3999the module level (not within a control method.) These opcodes are executed 4000exactly once at the time the table is loaded. This type of code was legal up 4001until the release of ACPI 2.0B (2002) and is now supported within ACPI CA in 4002order to provide backwards compatibility with earlier BIOS implementations. 4003This eliminates the "Encountered executable code at module level" warning 4004that was previously generated upon detection of such code. 4005 4006Fixed a problem in the interpreter where an AE_NOT_FOUND exception could 4007inadvertently be generated during the lookup of namespace objects in the 4008second pass parse of ACPI tables and control methods. It appears that this 4009problem could occur during the resolution of forward references to namespace 4010objects. 4011 4012Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function, 4013corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This 4014allows the deadlock detection debug code to be compiled out in the normal 4015case, improving mutex performance (and overall subsystem performance) 4016considerably. 4017 4018Implemented a handful of miscellaneous fixes for possible memory leaks on 4019error conditions and error handling control paths. These fixes were 4020suggested by FreeBSD and the Coverity Prevent source code analysis tool. 4021 4022Added a check for a null RSDT pointer in AcpiGetFirmwareTable (tbxfroot.c) 4023to prevent a fault in this error case. 4024 4025Code and Data Size: Current and previous core subsystem library sizes are 4026shown below. These are the code and data sizes for the acpica.lib produced 4027by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4028any ACPI driver or OSPM code. The debug version of the code includes the 4029debug output trace mechanism and has a much larger code and data size. Note 4030that these values will vary depending on the efficiency of the compiler and 4031the compiler options used during generation. 4032 4033 Previous Release: 4034 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 4035 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 4036 Current Release: 4037 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 4038 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 4039 4040 40412) iASL Compiler/Disassembler: 4042 4043Implemented support to allow Type 1 and Type 2 ASL operators to appear at 4044the module level (not within a control method.) These operators will be 4045executed once at the time the table is loaded. This type of code was legal 4046up until the release of ACPI 2.0B (2002) and is now supported by the iASL 4047compiler in order to provide backwards compatibility with earlier BIOS ASL 4048code. 4049 4050The ACPI integer width (specified via the table revision ID or the -r 4051override, 32 or 64 bits) is now used internally during compile-time constant 4052folding to ensure that constants are truncated to 32 bits if necessary. 4053Previously, the revision ID value was only emitted in the AML table header. 4054 4055An error message is now generated for the Mutex and Method operators if the 4056SyncLevel parameter is outside the legal range of 0 through 15. 4057 4058Fixed a problem with the Method operator ParameterTypes list handling (ACPI 40593.0). Previously, more than 2 types or 2 arguments generated a syntax error. 4060The actual underlying implementation of method argument typechecking is 4061still under development, however. 4062 4063---------------------------------------- 406413 May 2005. Summary of changes for version 20050513: 4065 40661) ACPI CA Core Subsystem: 4067 4068Implemented support for PCI Express root bridges -- added support for device 4069PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup. 4070 4071The interpreter now automatically truncates incoming 64-bit constants to 32 4072bits if currently executing out of a 32-bit ACPI table (Revision < 2). This 4073also affects the iASL compiler constant folding. (Note: as per below, the 4074iASL compiler no longer allows 64-bit constants within 32-bit tables.) 4075 4076Fixed a problem where string and buffer objects with "static" pointers 4077(pointers to initialization data within an ACPI table) were not handled 4078consistently. The internal object copy operation now always copies the data 4079to a newly allocated buffer, regardless of whether the source object is 4080static or not. 4081 4082Fixed a problem with the FromBCD operator where an implicit result 4083conversion was improperly performed while storing the result to the target 4084operand. Since this is an "explicit conversion" operator, the implicit 4085conversion should never be performed on the output. 4086 4087Fixed a problem with the CopyObject operator where a copy to an existing 4088named object did not always completely overwrite the existing object stored 4089at name. Specifically, a buffer-to-buffer copy did not delete the existing 4090buffer. 4091 4092Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces and 4093structs for consistency. 4094 4095Code and Data Size: Current and previous core subsystem library sizes are 4096shown below. These are the code and data sizes for the acpica.lib produced 4097by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4098any ACPI driver or OSPM code. The debug version of the code includes the 4099debug output trace mechanism and has a much larger code and data size. Note 4100that these values will vary depending on the efficiency of the compiler and 4101the compiler options used during generation. 4102 4103 Previous Release: 4104 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 4105 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 4106 Current Release: (Same sizes) 4107 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 4108 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 4109 4110 41112) iASL Compiler/Disassembler: 4112 4113The compiler now emits a warning if an attempt is made to generate a 64-bit 4114integer constant from within a 32-bit ACPI table (Revision < 2). The integer 4115is truncated to 32 bits. 4116 4117Fixed a problem with large package objects: if the static length of the 4118package is greater than 255, the "variable length package" opcode is 4119emitted. Previously, this caused an error. This requires an update to the 4120ACPI spec, since it currently (incorrectly) states that packages larger than 4121255 elements are not allowed. 4122 4123The disassembler now correctly handles variable length packages and packages 4124larger than 255 elements. 4125 4126---------------------------------------- 412708 April 2005. Summary of changes for version 20050408: 4128 41291) ACPI CA Core Subsystem: 4130 4131Fixed three cases in the interpreter where an "index" argument to an ASL 4132function was still (internally) 32 bits instead of the required 64 bits. 4133This was the Index argument to the Index, Mid, and Match operators. 4134 4135The "strupr" function is now permanently local (AcpiUtStrupr), since this is 4136not a POSIX-defined function and not present in most kernel-level C 4137libraries. All references to the C library strupr function have been removed 4138from the headers. 4139 4140Completed the deployment of static functions/prototypes. All prototypes with 4141the static attribute have been moved from the headers to the owning C file. 4142 4143Implemented an extract option (-e) for the AcpiBin utility (AML binary 4144utility). This option allows the utility to extract individual ACPI tables 4145from the output of AcpiDmp. It provides the same functionality of the 4146acpixtract.pl perl script without the worry of setting the correct perl 4147options. AcpiBin runs on Windows and has not yet been generated/validated in 4148the Linux/Unix environment (but should be soon). 4149 4150Updated and fixed the table dump option for AcpiBin (-d). This option 4151converts a single ACPI table to a hex/ascii file, similar to the output of 4152AcpiDmp. 4153 4154Code and Data Size: Current and previous core subsystem library sizes are 4155shown below. These are the code and data sizes for the acpica.lib produced 4156by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4157any ACPI driver or OSPM code. The debug version of the code includes the 4158debug output trace mechanism and has a much larger code and data size. Note 4159that these values will vary depending on the efficiency of the compiler and 4160the compiler options used during generation. 4161 4162 Previous Release: 4163 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 4164 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 4165 Current Release: 4166 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 4167 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 4168 4169 41702) iASL Compiler/Disassembler: 4171 4172Disassembler fix: Added a check to ensure that the table length found in the 4173ACPI table header within the input file is not longer than the actual input 4174file size. This indicates some kind of file or table corruption. 4175 4176---------------------------------------- 417729 March 2005. Summary of changes for version 20050329: 4178 41791) ACPI CA Core Subsystem: 4180 4181An error is now generated if an attempt is made to create a Buffer Field of 4182length zero (A CreateField with a length operand of zero.) 4183 4184The interpreter now issues a warning whenever executable code at the module 4185level is detected during ACPI table load. This will give some idea of the 4186prevalence of this type of code. 4187 4188Implemented support for references to named objects (other than control 4189methods) within package objects. 4190 4191Enhanced package object output for the debug object. Package objects are now 4192completely dumped, showing all elements. 4193 4194Enhanced miscellaneous object output for the debug object. Any object can 4195now be written to the debug object (for example, a device object can be 4196written, and the type of the object will be displayed.) 4197 4198The "static" qualifier has been added to all local functions across both the 4199core subsystem and the iASL compiler. 4200 4201The number of "long" lines (> 80 chars) within the source has been 4202significantly reduced, by about 1/3. 4203 4204Cleaned up all header files to ensure that all CA/iASL functions are 4205prototyped (even static functions) and the formatting is consistent. 4206 4207Two new header files have been added, acopcode.h and acnames.h. 4208 4209Removed several obsolete functions that were no longer used. 4210 4211Code and Data Size: Current and previous core subsystem library sizes are 4212shown below. These are the code and data sizes for the acpica.lib produced 4213by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4214any ACPI driver or OSPM code. The debug version of the code includes the 4215debug output trace mechanism and has a much larger code and data size. Note 4216that these values will vary depending on the efficiency of the compiler and 4217the compiler options used during generation. 4218 4219 Previous Release: 4220 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4221 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 4222 Current Release: 4223 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 4224 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 4225 4226 4227 42282) iASL Compiler/Disassembler: 4229 4230Fixed a problem with the resource descriptor generation/support. For the 4231ResourceSourceIndex and the ResourceSource fields, both must be present, or 4232both must be not present - can't have one without the other. 4233 4234The compiler now returns non-zero from the main procedure if any errors have 4235occurred during the compilation. 4236 4237 4238---------------------------------------- 423909 March 2005. Summary of changes for version 20050309: 4240 42411) ACPI CA Core Subsystem: 4242 4243The string-to-buffer implicit conversion code has been modified again after 4244a change to the ACPI specification. In order to match the behavior of the 4245other major ACPI implementation, the target buffer is no longer truncated if 4246the source string is smaller than an existing target buffer. This change 4247requires an update to the ACPI spec, and should eliminate the recent 4248AE_AML_BUFFER_LIMIT issues. 4249 4250The "implicit return" support was rewritten to a new algorithm that solves 4251the general case. Rather than attempt to determine when a method is about to 4252exit, the result of every ASL operator is saved momentarily until the very 4253next ASL operator is executed. Therefore, no matter how the method exits, 4254there will always be a saved implicit return value. This feature is only 4255enabled with the AcpiGbl_EnableInterpreterSlack flag, and should eliminate 4256AE_AML_NO_RETURN_VALUE errors when enabled. 4257 4258Implemented implicit conversion support for the predicate (operand) of the 4259If, Else, and While operators. String and Buffer arguments are automatically 4260converted to Integers. 4261 4262Changed the string-to-integer conversion behavior to match the new ACPI 4263errata: "If no integer object exists, a new integer is created. The ASCII 4264string is interpreted as a hexadecimal constant. Each string character is 4265interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting 4266with the first character as the most significant digit, and ending with the 4267first non-hexadecimal character or end-of-string." This means that the first 4268non-hex character terminates the conversion and this is the code that was 4269changed. 4270 4271Fixed a problem where the ObjectType operator would fail (fault) when used 4272on an Index of a Package which pointed to a null package element. The 4273operator now properly returns zero (Uninitialized) in this case. 4274 4275Fixed a problem where the While operator used excessive memory by not 4276properly popping the result stack during execution. There was no memory leak 4277after execution, however. (Code provided by Valery Podrezov.) 4278 4279Fixed a problem where references to control methods within Package objects 4280caused the method to be invoked, instead of producing a reference object 4281pointing to the method. 4282 4283Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) to 4284improve performance and reduce code size. (Code provided by Alexey 4285Starikovskiy.) 4286 4287Code and Data Size: Current and previous core subsystem library sizes are 4288shown below. These are the code and data sizes for the acpica.lib produced 4289by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4290any ACPI driver or OSPM code. The debug version of the code includes the 4291debug output trace mechanism and has a much larger code and data size. Note 4292that these values will vary depending on the efficiency of the compiler and 4293the compiler options used during generation. 4294 4295 Previous Release: 4296 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4297 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 4298 Current Release: 4299 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4300 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 4301 4302 43032) iASL Compiler/Disassembler: 4304 4305Fixed a problem with the Return operator with no arguments. Since the AML 4306grammar for the byte encoding requires an operand for the Return opcode, the 4307compiler now emits a Return(Zero) for this case. An ACPI specification 4308update has been written for this case. 4309 4310For tables other than the DSDT, namepath optimization is automatically 4311disabled. This is because SSDTs can be loaded anywhere in the namespace, the 4312compiler has no knowledge of where, and thus cannot optimize namepaths. 4313 4314Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was 4315inadvertently omitted from the ACPI specification, and will require an 4316update to the spec. 4317 4318The source file scan for ASCII characters is now optional (-a). This change 4319was made because some vendors place non-ascii characters within comments. 4320However, the scan is simply a brute-force byte compare to ensure all 4321characters in the file are in the range 0x00 to 0x7F. 4322 4323Fixed a problem with the CondRefOf operator where the compiler was 4324inappropriately checking for the existence of the target. Since the point of 4325the operator is to check for the existence of the target at run-time, the 4326compiler no longer checks for the target existence. 4327 4328Fixed a problem where errors generated from the internal AML interpreter 4329during constant folding were not handled properly, causing a fault. 4330 4331Fixed a problem with overly aggressive range checking for the Stall 4332operator. The valid range (max 255) is now only checked if the operand is of 4333type Integer. All other operand types cannot be statically checked. 4334 4335Fixed a problem where control method references within the RefOf, DeRefOf, 4336and ObjectType operators were not treated properly. They are now treated as 4337actual references, not method invocations. 4338 4339Fixed and enhanced the "list namespace" option (-ln). This option was broken 4340a number of releases ago. 4341 4342Improved error handling for the Field, IndexField, and BankField operators. 4343The compiler now cleanly reports and recovers from errors in the field 4344component (FieldUnit) list. 4345 4346Fixed a disassembler problem where the optional ResourceDescriptor fields 4347TRS and TTP were not always handled correctly. 4348 4349Disassembler - Comments in output now use "//" instead of "/*" 4350 4351---------------------------------------- 435228 February 2005. Summary of changes for version 20050228: 4353 43541) ACPI CA Core Subsystem: 4355 4356Fixed a problem where the result of an Index() operator (an object 4357reference) must increment the reference count on the target object for the 4358life of the object reference. 4359 4360Implemented AML Interpreter and Debugger support for the new ACPI 3.0 4361Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and WordSpace 4362resource descriptors. 4363 4364Implemented support in the _OSI method for the ACPI 3.0 "Extended Address 4365Space Descriptor" string, indicating interpreter support for the descriptors 4366above. 4367 4368Implemented header support for the new ACPI 3.0 FADT flag bits. 4369 4370Implemented header support for the new ACPI 3.0 PCI Express bits for the PM1 4371status/enable registers. 4372 4373Updated header support for the MADT processor local Apic struct and MADT 4374platform interrupt source struct for new ACPI 3.0 fields. 4375 4376Implemented header support for the SRAT and SLIT ACPI tables. 4377 4378Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" flag 4379at runtime. 4380 4381Code and Data Size: Current and previous core subsystem library sizes are 4382shown below. These are the code and data sizes for the acpica.lib produced 4383by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4384any ACPI driver or OSPM code. The debug version of the code includes the 4385debug output trace mechanism and has a much larger code and data size. Note 4386that these values will vary depending on the efficiency of the compiler and 4387the compiler options used during generation. 4388 4389 Previous Release: 4390 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 4391 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 4392 Current Release: 4393 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4394 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 4395 4396 43972) iASL Compiler/Disassembler: 4398 4399Fixed a problem with the internal 64-bit String-to-integer conversion with 4400strings less than two characters long. 4401 4402Fixed a problem with constant folding where the result of the Index() 4403operator can not be considered a constant. This means that Index() cannot be 4404a type3 opcode and this will require an update to the ACPI specification. 4405 4406Disassembler: Implemented support for the TTP, MTP, and TRS resource 4407descriptor fields. These fields were inadvertently ignored and not output in 4408the disassembly of the resource descriptor. 4409 4410 4411 ---------------------------------------- 441211 February 2005. Summary of changes for version 20050211: 4413 44141) ACPI CA Core Subsystem: 4415 4416Implemented ACPI 3.0 support for implicit conversion within the Match() 4417operator. MatchObjects can now be of type integer, buffer, or string instead 4418of just type integer. Package elements are implicitly converted to the type 4419of the MatchObject. This change aligns the behavior of Match() with the 4420behavior of the other logical operators (LLess(), etc.) It also requires an 4421errata change to the ACPI specification as this support was intended for 4422ACPI 3.0, but was inadvertently omitted. 4423 4424Fixed a problem with the internal implicit "to buffer" conversion. Strings 4425that are converted to buffers will cause buffer truncation if the string is 4426smaller than the target buffer. Integers that are converted to buffers will 4427not cause buffer truncation, only zero extension (both as per the ACPI 4428spec.) The problem was introduced when code was added to truncate the 4429buffer, but this should not be performed in all cases, only the string case. 4430 4431Fixed a problem with the Buffer and Package operators where the interpreter 4432would get confused if two such operators were used as operands to an ASL 4433operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result 4434stack was not being popped after the execution of these operators, resulting 4435in an AE_NO_RETURN_VALUE exception. 4436 4437Fixed a problem with constructs of the form Store(Index(...),...). The 4438reference object returned from Index was inadvertently resolved to an actual 4439value. This problem was introduced in version 20050114 when the behavior of 4440Store() was modified to restrict the object types that can be used as the 4441source operand (to match the ACPI specification.) 4442 4443Reduced excessive stack use within the AcpiGetObjectInfo procedure. 4444 4445Added a fix to aclinux.h to allow generation of AcpiExec on Linux. 4446 4447Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct. 4448 4449Code and Data Size: Current and previous core subsystem library sizes are 4450shown below. These are the code and data sizes for the acpica.lib produced 4451by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4452any ACPI driver or OSPM code. The debug version of the code includes the 4453debug output trace mechanism and has a much larger code and data size. Note 4454that these values will vary depending on the efficiency of the compiler and 4455the compiler options used during generation. 4456 4457 Previous Release: 4458 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 4459 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 4460 Current Release: 4461 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 4462 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 4463 4464 44652) iASL Compiler/Disassembler: 4466 4467Fixed a code generation problem in the constant folding optimization code 4468where incorrect code was generated if a constant was reduced to a buffer 4469object (i.e., a reduced type 5 opcode.) 4470 4471Fixed a typechecking problem for the ToBuffer operator. Caused by an 4472incorrect return type in the internal opcode information table. 4473 4474---------------------------------------- 447525 January 2005. Summary of changes for version 20050125: 4476 44771) ACPI CA Core Subsystem: 4478 4479Fixed a recently introduced problem with the Global Lock where the 4480underlying semaphore was not created. This problem was introduced in 4481version 20050114, and caused an AE_AML_NO_OPERAND exception during an 4482Acquire() operation on _GL. 4483 4484The local object cache is now optional, and is disabled by default. Both 4485AcpiExec and the iASL compiler enable the cache because they run in user 4486mode and this enhances their performance. #define ACPI_ENABLE_OBJECT_CACHE 4487to enable the local cache. 4488 4489Fixed an issue in the internal function AcpiUtEvaluateObject concerning the 4490optional "implicit return" support where an error was returned if no return 4491object was expected, but one was implicitly returned. AE_OK is now returned 4492in this case and the implicitly returned object is deleted. 4493AcpiUtEvaluateObject is only occasionally used, and only to execute reserved 4494methods such as _STA and _INI where the return type is known up front. 4495 4496Fixed a few issues with the internal convert-to-integer code. It now returns 4497an error if an attempt is made to convert a null string, a string of only 4498blanks/tabs, or a zero-length buffer. This affects both implicit conversion 4499and explicit conversion via the ToInteger() operator. 4500 4501The internal debug code in AcpiUtAcquireMutex has been commented out. It is 4502not needed for normal operation and should increase the performance of the 4503entire subsystem. The code remains in case it is needed for debug purposes 4504again. 4505 4506The AcpiExec source and makefile are included in the Unix/Linux package for 4507the first time. 4508 4509Code and Data Size: Current and previous core subsystem library sizes are 4510shown below. These are the code and data sizes for the acpica.lib produced 4511by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4512any ACPI driver or OSPM code. The debug version of the code includes the 4513debug output trace mechanism and has a much larger code and data size. Note 4514that these values will vary depending on the efficiency of the compiler and 4515the compiler options used during generation. 4516 4517 Previous Release: 4518 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 4519 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 4520 Current Release: 4521 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 4522 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 4523 45242) iASL Compiler/Disassembler: 4525 4526Switch/Case support: A warning is now issued if the type of the Switch value 4527cannot be determined at compile time. For example, Switch(Arg0) will 4528generate the warning, and the type is assumed to be an integer. As per the 4529ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate the 4530warning. 4531 4532Switch/Case support: Implemented support for buffer and string objects as 4533the switch value. This is an ACPI 3.0 feature, now that LEqual supports 4534buffers and strings. 4535 4536Switch/Case support: The emitted code for the LEqual() comparisons now uses 4537the switch value as the first operand, not the second. The case value is now 4538the second operand, and this allows the case value to be implicitly 4539converted to the type of the switch value, not the other way around. 4540 4541Switch/Case support: Temporary variables are now emitted immediately within 4542the control method, not at the global level. This means that there are now 454336 temps available per-method, not 36 temps per-module as was the case with 4544the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.) 4545 4546---------------------------------------- 454714 January 2005. Summary of changes for version 20050114: 4548 4549Added 2005 copyright to all module headers. This affects every module in 4550the core subsystem, iASL compiler, and the utilities. 4551 45521) ACPI CA Core Subsystem: 4553 4554Fixed an issue with the String-to-Buffer conversion code where the string 4555null terminator was not included in the buffer after conversion, but there 4556is existing ASL that assumes the string null terminator is included. This is 4557the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was 4558introduced in the previous version when the code was updated to correctly 4559set the converted buffer size as per the ACPI specification. The ACPI spec 4560is ambiguous and will be updated to specify that the null terminator must be 4561included in the converted buffer. This also affects the ToBuffer() ASL 4562operator. 4563 4564Fixed a problem with the Mid() ASL/AML operator where it did not work 4565correctly on Buffer objects. Newly created sub-buffers were not being marked 4566as initialized. 4567 4568 4569Fixed a problem in AcpiTbFindTable where incorrect string compares were 4570performed on the OemId and OemTableId table header fields. These fields are 4571not null terminated, so strncmp is now used instead of strcmp. 4572 4573Implemented a restriction on the Store() ASL/AML operator to align the 4574behavior with the ACPI specification. Previously, any object could be used 4575as the source operand. Now, the only objects that may be used are Integers, 4576Buffers, Strings, Packages, Object References, and DDB Handles. If 4577necessary, the original behavior can be restored by enabling the 4578EnableInterpreterSlack flag. 4579 4580Enhanced the optional "implicit return" support to allow an implicit return 4581value from methods that are invoked externally via the AcpiEvaluateObject 4582interface. This enables implicit returns from the _STA and _INI methods, 4583for example. 4584 4585Changed the Revision() ASL/AML operator to return the current version of the 4586AML interpreter, in the YYYYMMDD format. Previously, it incorrectly returned 4587the supported ACPI version (This is the function of the _REV method). 4588 4589Updated the _REV predefined method to return the currently supported version 4590of ACPI, now 3. 4591 4592Implemented batch mode option for the AcpiExec utility (-b). 4593 4594Code and Data Size: Current and previous core subsystem library sizes are 4595shown below. These are the code and data sizes for the acpica.lib produced 4596by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4597any ACPI driver or OSPM code. The debug version of the code includes the 4598debug output trace mechanism and has a much larger code and data size. Note 4599that these values will vary depending on the efficiency of the compiler and 4600the compiler options used during generation. 4601 4602 Previous Release: 4603 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4604 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 4605 Current Release: 4606 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 4607 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 4608 4609---------------------------------------- 461010 December 2004. Summary of changes for version 20041210: 4611 4612ACPI 3.0 support is nearing completion in both the iASL compiler and the 4613ACPI CA core subsystem. 4614 46151) ACPI CA Core Subsystem: 4616 4617Fixed a problem in the ToDecimalString operator where the resulting string 4618length was incorrectly calculated. The length is now calculated exactly, 4619eliminating incorrect AE_STRING_LIMIT exceptions. 4620 4621Fixed a problem in the ToHexString operator to allow a maximum 200 character 4622string to be produced. 4623 4624Fixed a problem in the internal string-to-buffer and buffer-to-buffer copy 4625routine where the length of the resulting buffer was not truncated to the 4626new size (if the target buffer already existed). 4627 4628Code and Data Size: Current and previous core subsystem library sizes are 4629shown below. These are the code and data sizes for the acpica.lib produced 4630by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4631any ACPI driver or OSPM code. The debug version of the code includes the 4632debug output trace mechanism and has a much larger code and data size. Note 4633that these values will vary depending on the efficiency of the compiler and 4634the compiler options used during generation. 4635 4636 Previous Release: 4637 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4638 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 4639 Current Release: 4640 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4641 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 4642 4643 46442) iASL Compiler/Disassembler: 4645 4646Implemented the new ACPI 3.0 resource template macros - DWordSpace, 4647ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace. 4648Includes support in the disassembler. 4649 4650Implemented support for the new (ACPI 3.0) parameter to the Register macro, 4651AccessSize. 4652 4653Fixed a problem where the _HE resource name for the Interrupt macro was 4654referencing bit 0 instead of bit 1. 4655 4656Implemented check for maximum 255 interrupts in the Interrupt macro. 4657 4658Fixed a problem with the predefined resource descriptor names where 4659incorrect AML code was generated if the offset within the resource buffer 4660was 0 or 1. The optimizer shortened the AML code to a single byte opcode 4661but did not update the surrounding package lengths. 4662 4663Changes to the Dma macro: All channels within the channel list must be in 4664the range 0-7. Maximum 8 channels can be specified. BusMaster operand is 4665optional (default is BusMaster). 4666 4667Implemented check for maximum 7 data bytes for the VendorShort macro. 4668 4669The ReadWrite parameter is now optional for the Memory32 and similar macros. 4670 4671---------------------------------------- 467203 December 2004. Summary of changes for version 20041203: 4673 46741) ACPI CA Core Subsystem: 4675 4676The low-level field insertion/extraction code (exfldio) has been completely 4677rewritten to eliminate unnecessary complexity, bugs, and boundary 4678conditions. 4679 4680Fixed a problem in the ToInteger, ToBuffer, ToHexString, and ToDecimalString 4681operators where the input operand could be inadvertently deleted if no 4682conversion was necessary (e.g., if the input to ToInteger was an Integer 4683object.) 4684 4685Fixed a problem with the ToDecimalString and ToHexString where an incorrect 4686exception code was returned if the resulting string would be > 200 chars. 4687AE_STRING_LIMIT is now returned. 4688 4689Fixed a problem with the Concatenate operator where AE_OK was always 4690returned, even if the operation failed. 4691 4692Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128 4693semaphores to be allocated. 4694 4695Code and Data Size: Current and previous core subsystem library sizes are 4696shown below. These are the code and data sizes for the acpica.lib produced 4697by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4698any ACPI driver or OSPM code. The debug version of the code includes the 4699debug output trace mechanism and has a much larger code and data size. Note 4700that these values will vary depending on the efficiency of the compiler and 4701the compiler options used during generation. 4702 4703 Previous Release: 4704 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 4705 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 4706 Current Release: 4707 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4708 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 4709 4710 47112) iASL Compiler/Disassembler: 4712 4713Fixed typechecking for the ObjectType and SizeOf operators. Problem was 4714recently introduced in 20041119. 4715 4716Fixed a problem with the ToUUID macro where the upper nybble of each buffer 4717byte was inadvertently set to zero. 4718 4719---------------------------------------- 472019 November 2004. Summary of changes for version 20041119: 4721 47221) ACPI CA Core Subsystem: 4723 4724Fixed a problem in the internal ConvertToInteger routine where new integers 4725were not truncated to 32 bits for 32-bit ACPI tables. This routine converts 4726buffers and strings to integers. 4727 4728Implemented support to store a value to an Index() on a String object. This 4729is an ACPI 2.0 feature that had not yet been implemented. 4730 4731Implemented new behavior for storing objects to individual package elements 4732(via the Index() operator). The previous behavior was to invoke the implicit 4733conversion rules if an object was already present at the index. The new 4734behavior is to simply delete any existing object and directly store the new 4735object. Although the ACPI specification seems unclear on this subject, other 4736ACPI implementations behave in this manner. (This is the root of the 4737AE_BAD_HEX_CONSTANT issue.) 4738 4739Modified the RSDP memory scan mechanism to support the extended checksum for 4740ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid 4741RSDP signature is found with a valid checksum. 4742 4743Code and Data Size: Current and previous core subsystem library sizes are 4744shown below. These are the code and data sizes for the acpica.lib produced 4745by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4746any ACPI driver or OSPM code. The debug version of the code includes the 4747debug output trace mechanism and has a much larger code and data size. Note 4748that these values will vary depending on the efficiency of the compiler and 4749the compiler options used during generation. 4750 4751 Previous Release: 4752 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 4753 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 4754 Current Release: 4755 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 4756 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 4757 4758 47592) iASL Compiler/Disassembler: 4760 4761Fixed a missing semicolon in the aslcompiler.y file. 4762 4763---------------------------------------- 476405 November 2004. Summary of changes for version 20041105: 4765 47661) ACPI CA Core Subsystem: 4767 4768Implemented support for FADT revision 2. This was an interim table (between 4769ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register. 4770 4771Implemented optional support to allow uninitialized LocalX and ArgX 4772variables in a control method. The variables are initialized to an Integer 4773object with a value of zero. This support is enabled by setting the 4774AcpiGbl_EnableInterpreterSlack flag to TRUE. 4775 4776Implemented support for Integer objects for the SizeOf operator. Either 4 4777or 8 is returned, depending on the current integer size (32-bit or 64-bit, 4778depending on the parent table revision). 4779 4780Fixed a problem in the implementation of the SizeOf and ObjectType operators 4781where the operand was resolved to a value too early, causing incorrect 4782return values for some objects. 4783 4784Fixed some possible memory leaks during exceptional conditions. 4785 4786Code and Data Size: Current and previous core subsystem library sizes are 4787shown below. These are the code and data sizes for the acpica.lib produced 4788by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4789any ACPI driver or OSPM code. The debug version of the code includes the 4790debug output trace mechanism and has a much larger code and data size. Note 4791that these values will vary depending on the efficiency of the compiler and 4792the compiler options used during generation. 4793 4794 Previous Release: 4795 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 4796 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 4797 Current Release: 4798 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 4799 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 4800 4801 48022) iASL Compiler/Disassembler: 4803 4804Implemented support for all ACPI 3.0 reserved names and methods. 4805 4806Implemented all ACPI 3.0 grammar elements in the front-end, including 4807support for semicolons. 4808 4809Implemented the ACPI 3.0 Function() and ToUUID() macros 4810 4811Fixed a problem in the disassembler where a Scope() operator would not be 4812emitted properly if the target of the scope was in another table. 4813 4814---------------------------------------- 481515 October 2004. Summary of changes for version 20041015: 4816 4817Note: ACPI CA is currently undergoing an in-depth and complete formal 4818evaluation to test/verify the following areas. Other suggestions are 4819welcome. This will result in an increase in the frequency of releases and 4820the number of bug fixes in the next few months. 4821 - Functional tests for all ASL/AML operators 4822 - All implicit/explicit type conversions 4823 - Bit fields and operation regions 4824 - 64-bit math support and 32-bit-only "truncated" math support 4825 - Exceptional conditions, both compiler and interpreter 4826 - Dynamic object deletion and memory leaks 4827 - ACPI 3.0 support when implemented 4828 - External interfaces to the ACPI subsystem 4829 4830 48311) ACPI CA Core Subsystem: 4832 4833Fixed two alignment issues on 64-bit platforms - within debug statements in 4834AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the Address 4835field within the non-aligned ACPI generic address structure. 4836 4837Fixed a problem in the Increment and Decrement operators where incorrect 4838operand resolution could result in the inadvertent modification of the 4839original integer when the integer is passed into another method as an 4840argument and the arg is then incremented/decremented. 4841 4842Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-bit 4843BCD number were truncated during conversion. 4844 4845Fixed a problem in the ToDecimal operator where the length of the resulting 4846string could be set incorrectly too long if the input operand was a Buffer 4847object. 4848 4849Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte (0) 4850within a buffer would prematurely terminate a compare between buffer 4851objects. 4852 4853Added a check for string overflow (>200 characters as per the ACPI 4854specification) during the Concatenate operator with two string operands. 4855 4856Code and Data Size: Current and previous core subsystem library sizes are 4857shown below. These are the code and data sizes for the acpica.lib produced 4858by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4859any ACPI driver or OSPM code. The debug version of the code includes the 4860debug output trace mechanism and has a much larger code and data size. Note 4861that these values will vary depending on the efficiency of the compiler and 4862the compiler options used during generation. 4863 4864 Previous Release: 4865 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 4866 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 4867 Current Release: 4868 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 4869 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 4870 4871 4872 48732) iASL Compiler/Disassembler: 4874 4875Allow the use of the ObjectType operator on uninitialized Locals and Args 4876(returns 0 as per the ACPI specification). 4877 4878Fixed a problem where the compiler would fault if there was a syntax error 4879in the FieldName of all of the various CreateXXXField operators. 4880 4881Disallow the use of lower case letters within the EISAID macro, as per the 4882ACPI specification. All EISAID strings must be of the form "UUUNNNN" Where 4883U is an uppercase letter and N is a hex digit. 4884 4885 4886---------------------------------------- 488706 October 2004. Summary of changes for version 20041006: 4888 48891) ACPI CA Core Subsystem: 4890 4891Implemented support for the ACPI 3.0 Timer operator. This ASL function 4892implements a 64-bit timer with 100 nanosecond granularity. 4893 4894Defined a new OSL interface, AcpiOsGetTimer. This interface is used to 4895implement the ACPI 3.0 Timer operator. This allows the host OS to implement 4896the timer with the best clock available. Also, it keeps the core subsystem 4897out of the clock handling business, since the host OS (usually) performs 4898this function. 4899 4900Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write) 4901functions use a 64-bit address which is part of the packed ACPI Generic 4902Address Structure. Since the structure is non-aligned, the alignment macros 4903are now used to extract the address to a local variable before use. 4904 4905Fixed a problem where the ToInteger operator assumed all input strings were 4906hexadecimal. The operator now handles both decimal strings and hex strings 4907(prefixed with "0x"). 4908 4909Fixed a problem where the string length in the string object created as a 4910result of the internal ConvertToString procedure could be incorrect. This 4911potentially affected all implicit conversions and also the ToDecimalString 4912and ToHexString operators. 4913 4914Fixed two problems in the ToString operator. If the length parameter was 4915zero, an incorrect string object was created and the value of the input 4916length parameter was inadvertently changed from zero to Ones. 4917 4918Fixed a problem where the optional ResourceSource string in the ExtendedIRQ 4919resource macro was ignored. 4920 4921Simplified the interfaces to the internal division functions, reducing code 4922size and complexity. 4923 4924Code and Data Size: Current and previous core subsystem library sizes are 4925shown below. These are the code and data sizes for the acpica.lib produced 4926by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4927any ACPI driver or OSPM code. The debug version of the code includes the 4928debug output trace mechanism and has a much larger code and data size. Note 4929that these values will vary depending on the efficiency of the compiler and 4930the compiler options used during generation. 4931 4932 Previous Release: 4933 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 4934 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 4935 Current Release: 4936 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 4937 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 4938 4939 49402) iASL Compiler/Disassembler: 4941 4942Implemented support for the ACPI 3.0 Timer operator. 4943 4944Fixed a problem where the Default() operator was inadvertently ignored in a 4945Switch/Case block. This was a problem in the translation of the Switch 4946statement to If...Else pairs. 4947 4948Added support to allow a standalone Return operator, with no parentheses (or 4949operands). 4950 4951Fixed a problem with code generation for the ElseIf operator where the 4952translated Else...If parse tree was improperly constructed leading to the 4953loss of some code. 4954 4955---------------------------------------- 495622 September 2004. Summary of changes for version 20040922: 4957 49581) ACPI CA Core Subsystem: 4959 4960Fixed a problem with the implementation of the LNot() operator where "Ones" 4961was not returned for the TRUE case. Changed the code to return Ones instead 4962of (!Arg) which was usually 1. This change affects iASL constant folding for 4963this operator also. 4964 4965Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was not 4966initialized properly -- Now zero the entire buffer in this case where the 4967buffer already exists. 4968 4969Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32 4970Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all 4971related code considerably. This will require changes/updates to all OS 4972interface layers (OSLs.) 4973 4974Implemented a new external interface, AcpiInstallExceptionHandler, to allow 4975a system exception handler to be installed. This handler is invoked upon any 4976run-time exception that occurs during control method execution. 4977 4978Added support for the DSDT in AcpiTbFindTable. This allows the 4979DataTableRegion() operator to access the local copy of the DSDT. 4980 4981Code and Data Size: Current and previous core subsystem library sizes are 4982shown below. These are the code and data sizes for the acpica.lib produced 4983by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4984any ACPI driver or OSPM code. The debug version of the code includes the 4985debug output trace mechanism and has a much larger code and data size. Note 4986that these values will vary depending on the efficiency of the compiler and 4987the compiler options used during generation. 4988 4989 Previous Release: 4990 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 4991 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 4992 Current Release: 4993 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 4994 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 4995 4996 49972) iASL Compiler/Disassembler: 4998 4999Fixed a problem with constant folding and the LNot operator. LNot was 5000returning 1 in the TRUE case, not Ones as per the ACPI specification. This 5001could result in the generation of an incorrect folded/reduced constant. 5002 5003End-Of-File is now allowed within a "//"-style comment. A parse error no 5004longer occurs if such a comment is at the very end of the input ASL source 5005file. 5006 5007Implemented the "-r" option to override the Revision in the table header. 5008The initial use of this option will be to simplify the evaluation of the AML 5009interpreter by allowing a single ASL source module to be compiled for either 501032-bit or 64-bit integers. 5011 5012 5013---------------------------------------- 501427 August 2004. Summary of changes for version 20040827: 5015 50161) ACPI CA Core Subsystem: 5017 5018- Implemented support for implicit object conversion in the non-numeric 5019logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, and 5020LNotEqual.) Any combination of Integers/Strings/Buffers may now be used; 5021the second operand is implicitly converted on the fly to match the type of 5022the first operand. For example: 5023 5024 LEqual (Source1, Source2) 5025 5026Source1 and Source2 must each evaluate to an integer, a string, or a buffer. 5027The data type of Source1 dictates the required type of Source2. Source2 is 5028implicitly converted if necessary to match the type of Source1. 5029 5030- Updated and corrected the behavior of the string conversion support. The 5031rules concerning conversion of buffers to strings (according to the ACPI 5032specification) are as follows: 5033 5034ToDecimalString - explicit byte-wise conversion of buffer to string of 5035decimal values (0-255) separated by commas. ToHexString - explicit byte-wise 5036conversion of buffer to string of hex values (0-FF) separated by commas. 5037ToString - explicit byte-wise conversion of buffer to string. Byte-by-byte 5038copy with no transform except NULL terminated. Any other implicit buffer-to- 5039string conversion - byte-wise conversion of buffer to string of hex values 5040(0-FF) separated by spaces. 5041 5042- Fixed typo in definition of AcpiGbl_EnableInterpreterSlack. 5043 5044- Fixed a problem in AcpiNsGetPathnameLength where the returned length was 5045one byte too short in the case of a node in the root scope. This could 5046cause a fault during debug output. 5047 5048- Code and Data Size: Current and previous core subsystem library sizes are 5049shown below. These are the code and data sizes for the acpica.lib produced 5050by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5051any ACPI driver or OSPM code. The debug version of the code includes the 5052debug output trace mechanism and has a much larger code and data size. Note 5053that these values will vary depending on the efficiency of the compiler and 5054the compiler options used during generation. 5055 5056 Previous Release: 5057 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 5058 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 5059 Current Release: 5060 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 5061 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 5062 5063 50642) iASL Compiler/Disassembler: 5065 5066- Fixed a Linux generation error. 5067 5068 5069---------------------------------------- 507016 August 2004. Summary of changes for version 20040816: 5071 50721) ACPI CA Core Subsystem: 5073 5074Designed and implemented support within the AML interpreter for the so- 5075called "implicit return". This support returns the result of the last ASL 5076operation within a control method, in the absence of an explicit Return() 5077operator. A few machines depend on this behavior, even though it is not 5078explicitly supported by the ASL language. It is optional support that can 5079be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag. 5080 5081Removed support for the PCI_Config address space from the internal low level 5082hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This 5083support was not used internally, and would not work correctly anyway because 5084the PCI bus number and segment number were not supported. There are 5085separate interfaces for PCI configuration space access because of the unique 5086interface. 5087 5088Code and Data Size: Current and previous core subsystem library sizes are 5089shown below. These are the code and data sizes for the acpica.lib produced 5090by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5091any ACPI driver or OSPM code. The debug version of the code includes the 5092debug output trace mechanism and has a much larger code and data size. Note 5093that these values will vary depending on the efficiency of the compiler and 5094the compiler options used during generation. 5095 5096 Previous Release: 5097 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 5098 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 5099 Current Release: 5100 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 5101 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 5102 5103 51042) iASL Compiler/Disassembler: 5105 5106Fixed a problem where constants in ASL expressions at the root level (not 5107within a control method) could be inadvertently truncated during code 5108generation. This problem was introduced in the 20040715 release. 5109 5110 5111---------------------------------------- 511215 July 2004. Summary of changes for version 20040715: 5113 51141) ACPI CA Core Subsystem: 5115 5116Restructured the internal HW GPE interfaces to pass/track the current state 5117of interrupts (enabled/disabled) in order to avoid possible deadlock and 5118increase flexibility of the interfaces. 5119 5120Implemented a "lexicographical compare" for String and Buffer objects within 5121the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -- 5122as per further clarification to the ACPI specification. Behavior is similar 5123to C library "strcmp". 5124 5125Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable 5126external function. In the 32-bit non-debug case, the stack use has been 5127reduced from 168 bytes to 32 bytes. 5128 5129Deployed a new run-time configuration flag, AcpiGbl_EnableInterpreterSlack, 5130whose purpose is to allow the AML interpreter to forgive certain bad AML 5131constructs. Default setting is FALSE. 5132 5133Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field IO 5134support code. If enabled, it allows field access to go beyond the end of a 5135region definition if the field is within the region length rounded up to the 5136next access width boundary (a common coding error.) 5137 5138Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to 5139ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also, these 5140symbols are lowercased by the latest version of the AcpiSrc tool. 5141 5142The prototypes for the PCI interfaces in acpiosxf.h have been updated to 5143rename "Register" to simply "Reg" to prevent certain compilers from 5144complaining. 5145 5146Code and Data Size: Current and previous core subsystem library sizes are 5147shown below. These are the code and data sizes for the acpica.lib produced 5148by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5149any ACPI driver or OSPM code. The debug version of the code includes the 5150debug output trace mechanism and has a much larger code and data size. Note 5151that these values will vary depending on the efficiency of the compiler and 5152the compiler options used during generation. 5153 5154 Previous Release: 5155 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 5156 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 5157 Current Release: 5158 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 5159 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 5160 5161 51622) iASL Compiler/Disassembler: 5163 5164Implemented full support for Package objects within the Case() operator. 5165Note: The Break() operator is currently not supported within Case blocks 5166(TermLists) as there is some question about backward compatibility with ACPI 51671.0 interpreters. 5168 5169 5170Fixed a problem where complex terms were not supported properly within the 5171Switch() operator. 5172 5173Eliminated extraneous warning for compiler-emitted reserved names of the 5174form "_T_x". (Used in Switch/Case operators.) 5175 5176Eliminated optimization messages for "_T_x" objects and small constants 5177within the DefinitionBlock operator. 5178 5179 5180---------------------------------------- 518115 June 2004. Summary of changes for version 20040615: 5182 51831) ACPI CA Core Subsystem: 5184 5185Implemented support for Buffer and String objects (as per ACPI 2.0) for the 5186following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 5187LLessEqual. 5188 5189All directory names in the entire source package are lower case, as they 5190were in earlier releases. 5191 5192Implemented "Disassemble" command in the AML debugger that will disassemble 5193a single control method. 5194 5195Code and Data Size: Current and previous core subsystem library sizes are 5196shown below. These are the code and data sizes for the acpica.lib produced 5197by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5198any ACPI driver or OSPM code. The debug version of the code includes the 5199debug output trace mechanism and has a much larger code and data size. Note 5200that these values will vary depending on the efficiency of the compiler and 5201the compiler options used during generation. 5202 5203 Previous Release: 5204 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 5205 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 5206 5207 Current Release: 5208 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 5209 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 5210 5211 52122) iASL Compiler/Disassembler: 5213 5214Implemented support for Buffer and String objects (as per ACPI 2.0) for the 5215following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 5216LLessEqual. 5217 5218All directory names in the entire source package are lower case, as they 5219were in earlier releases. 5220 5221Fixed a fault when using the -g or -d<nofilename> options if the FADT was 5222not found. 5223 5224Fixed an issue with the Windows version of the compiler where later versions 5225of Windows place the FADT in the registry under the name "FADT" and not 5226"FACP" as earlier versions did. This applies when using the -g or - 5227d<nofilename> options. The compiler now looks for both strings as 5228necessary. 5229 5230Fixed a problem with compiler namepath optimization where a namepath within 5231the Scope() operator could not be optimized if the namepath was a subpath of 5232the current scope path. 5233 5234---------------------------------------- 523527 May 2004. Summary of changes for version 20040527: 5236 52371) ACPI CA Core Subsystem: 5238 5239Completed a new design and implementation for EBDA (Extended BIOS Data Area) 5240support in the RSDP scan code. The original code improperly scanned for the 5241EBDA by simply scanning from memory location 0 to 0x400. The correct method 5242is to first obtain the EBDA pointer from within the BIOS data area, then 5243scan 1K of memory starting at the EBDA pointer. There appear to be few if 5244any machines that place the RSDP in the EBDA, however. 5245 5246Integrated a fix for a possible fault during evaluation of BufferField 5247arguments. Obsolete code that was causing the problem was removed. 5248 5249Found and fixed a problem in the Field Support Code where data could be 5250corrupted on a bit field read that starts on an aligned boundary but does 5251not end on an aligned boundary. Merged the read/write "datum length" 5252calculation code into a common procedure. 5253 5254Rolled in a couple of changes to the FreeBSD-specific header. 5255 5256 5257Code and Data Size: Current and previous core subsystem library sizes are 5258shown below. These are the code and data sizes for the acpica.lib produced 5259by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5260any ACPI driver or OSPM code. The debug version of the code includes the 5261debug output trace mechanism and has a much larger code and data size. Note 5262that these values will vary depending on the efficiency of the compiler and 5263the compiler options used during generation. 5264 5265 Previous Release: 5266 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 5267 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 5268 Current Release: 5269 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 5270 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 5271 5272 52732) iASL Compiler/Disassembler: 5274 5275Fixed a generation warning produced by some overly-verbose compilers for a 527664-bit constant. 5277 5278---------------------------------------- 527914 May 2004. Summary of changes for version 20040514: 5280 52811) ACPI CA Core Subsystem: 5282 5283Fixed a problem where hardware GPE enable bits sometimes not set properly 5284during and after GPE method execution. Result of 04/27 changes. 5285 5286Removed extra "clear all GPEs" when sleeping/waking. 5287 5288Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single 5289AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above to 5290the new AcpiEv* calls as appropriate. 5291 5292ACPI_OS_NAME was removed from the OS-specific headers. The default name is 5293now "Microsoft Windows NT" for maximum compatibility. However this can be 5294changed by modifying the acconfig.h file. 5295 5296Allow a single invocation of AcpiInstallNotifyHandler for a handler that 5297traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag. 5298 5299Run _INI methods on ThermalZone objects. This is against the ACPI 5300specification, but there is apparently ASL code in the field that has these 5301_INI methods, and apparently "other" AML interpreters execute them. 5302 5303Performed a full 16/32/64 bit lint that resulted in some small changes. 5304 5305Added a sleep simulation command to the AML debugger to test sleep code. 5306 5307Code and Data Size: Current and previous core subsystem library sizes are 5308shown below. These are the code and data sizes for the acpica.lib produced 5309by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5310any ACPI driver or OSPM code. The debug version of the code includes the 5311debug output trace mechanism and has a much larger code and data size. Note 5312that these values will vary depending on the efficiency of the compiler and 5313the compiler options used during generation. 5314 5315 Previous Release: 5316 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 5317 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 5318 Current Release: 5319 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 5320 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 5321 5322---------------------------------------- 532327 April 2004. Summary of changes for version 20040427: 5324 53251) ACPI CA Core Subsystem: 5326 5327Completed a major overhaul of the GPE handling within ACPI CA. There are 5328now three types of GPEs: wake-only, runtime-only, and combination wake/run. 5329The only GPEs allowed to be combination wake/run are for button-style 5330devices such as a control-method power button, control-method sleep button, 5331or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are not 5332referenced by any _PRW methods are marked for "runtime" and hardware 5333enabled. Any GPE that is referenced by a _PRW method is marked for "wake" 5334(and disabled at runtime). However, at sleep time, only those GPEs that 5335have been specifically enabled for wake via the AcpiEnableGpe interface will 5336actually be hardware enabled. 5337 5338A new external interface has been added, AcpiSetGpeType(), that is meant to 5339be used by device drivers to force a GPE to a particular type. It will be 5340especially useful for the drivers for the button devices mentioned above. 5341 5342Completed restructuring of the ACPI CA initialization sequence so that 5343default operation region handlers are installed before GPEs are initialized 5344and the _PRW methods are executed. This will prevent errors when the _PRW 5345methods attempt to access system memory or I/O space. 5346 5347GPE enable/disable no longer reads the GPE enable register. We now keep the 5348enable info for runtime and wake separate and in the GPE_EVENT_INFO. We 5349thus no longer depend on the hardware to maintain these bits. 5350 5351Always clear the wake status and fixed/GPE status bits before sleep, even 5352for state S5. 5353 5354Improved the AML debugger output for displaying the GPE blocks and their 5355current status. 5356 5357Added new strings for the _OSI method, of the form "Windows 2001 SPx" where 5358x = 0,1,2,3,4. 5359 5360Fixed a problem where the physical address was incorrectly calculated when 5361the Load() operator was used to directly load from an Operation Region (vs. 5362loading from a Field object.) Also added check for minimum table length for 5363this case. 5364 5365Fix for multiple mutex acquisition. Restore original thread SyncLevel on 5366mutex release. 5367 5368Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for 5369consistency with the other fields returned. 5370 5371Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such 5372structure for each GPE in the system, so the size of this structure is 5373important. 5374 5375CPU stack requirement reduction: Cleaned up the method execution and object 5376evaluation paths so that now a parameter structure is passed, instead of 5377copying the various method parameters over and over again. 5378 5379In evregion.c: Correctly exit and reenter the interpreter region if and 5380only if dispatching an operation region request to a user-installed handler. 5381Do not exit/reenter when dispatching to a default handler (e.g., default 5382system memory or I/O handlers) 5383 5384 5385Notes for updating drivers for the new GPE support. The following changes 5386must be made to ACPI-related device drivers that are attached to one or more 5387GPEs: (This information will be added to the ACPI CA Programmer Reference.) 5388 53891) AcpiInstallGpeHandler no longer automatically enables the GPE, you must 5390explicitly call AcpiEnableGpe. 53912) There is a new interface called AcpiSetGpeType. This should be called 5392before enabling the GPE. Also, this interface will automatically disable 5393the GPE if it is currently enabled. 53943) AcpiEnableGpe no longer supports a GPE type flag. 5395 5396Specific drivers that must be changed: 53971) EC driver: 5398 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED, 5399AeGpeHandler, NULL); 5400 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME); 5401 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR); 5402 54032) Button Drivers (Power, Lid, Sleep): 5404Run _PRW method under parent device 5405If _PRW exists: /* This is a control-method button */ 5406 Extract GPE number and possibly GpeDevice 5407 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN); 5408 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR); 5409 5410For all other devices that have _PRWs, we automatically set the GPE type to 5411ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. This 5412must be done on a selective basis, usually requiring some kind of user app 5413to allow the user to pick the wake devices. 5414 5415 5416Code and Data Size: Current and previous core subsystem library sizes are 5417shown below. These are the code and data sizes for the acpica.lib produced 5418by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5419any ACPI driver or OSPM code. The debug version of the code includes the 5420debug output trace mechanism and has a much larger code and data size. Note 5421that these values will vary depending on the efficiency of the compiler and 5422the compiler options used during generation. 5423 5424 Previous Release: 5425 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 5426 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 5427 Current Release: 5428 5429 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 5430 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 5431 5432 5433 5434---------------------------------------- 543502 April 2004. Summary of changes for version 20040402: 5436 54371) ACPI CA Core Subsystem: 5438 5439Fixed an interpreter problem where an indirect store through an ArgX 5440parameter was incorrectly applying the "implicit conversion rules" during 5441the store. From the ACPI specification: "If the target is a method local or 5442argument (LocalX or ArgX), no conversion is performed and the result is 5443stored directly to the target". The new behavior is to disable implicit 5444conversion during ALL stores to an ArgX. 5445 5446Changed the behavior of the _PRW method scan to ignore any and all errors 5447returned by a given _PRW. This prevents the scan from aborting from the 5448failure of any single _PRW. 5449 5450Moved the runtime configuration parameters from the global init procedure to 5451static variables in acglobal.h. This will allow the host to override the 5452default values easily. 5453 5454Code and Data Size: Current and previous core subsystem library sizes are 5455shown below. These are the code and data sizes for the acpica.lib produced 5456by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5457any ACPI driver or OSPM code. The debug version of the code includes the 5458debug output trace mechanism and has a much larger code and data size. Note 5459that these values will vary depending on the efficiency of the compiler and 5460the compiler options used during generation. 5461 5462 Previous Release: 5463 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 5464 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 5465 Current Release: 5466 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 5467 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 5468 5469 54702) iASL Compiler/Disassembler: 5471 5472iASL now fully disassembles SSDTs. However, External() statements are not 5473generated automatically for unresolved symbols at this time. This is a 5474planned feature for future implementation. 5475 5476Fixed a scoping problem in the disassembler that occurs when the type of the 5477target of a Scope() operator is overridden. This problem caused an 5478incorrectly nested internal namespace to be constructed. 5479 5480Any warnings or errors that are emitted during disassembly are now commented 5481out automatically so that the resulting file can be recompiled without any 5482hand editing. 5483 5484---------------------------------------- 548526 March 2004. Summary of changes for version 20040326: 5486 54871) ACPI CA Core Subsystem: 5488 5489Implemented support for "wake" GPEs via interaction between GPEs and the 5490_PRW methods. Every GPE that is pointed to by one or more _PRWs is 5491identified as a WAKE GPE and by default will no longer be enabled at 5492runtime. Previously, we were blindly enabling all GPEs with a corresponding 5493_Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway. We 5494believe this has been the cause of thousands of "spurious" GPEs on some 5495systems. 5496 5497This new GPE behavior is can be reverted to the original behavior (enable 5498ALL GPEs at runtime) via a runtime flag. 5499 5500Fixed a problem where aliased control methods could not access objects 5501properly. The proper scope within the namespace was not initialized 5502(transferred to the target of the aliased method) before executing the 5503target method. 5504 5505Fixed a potential race condition on internal object deletion on the return 5506object in AcpiEvaluateObject. 5507 5508Integrated a fix for resource descriptors where both _MEM and _MTP were 5509being extracted instead of just _MEM. (i.e. bitmask was incorrectly too 5510wide, 0x0F instead of 0x03.) 5511 5512Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, preventing a 5513fault in some cases. 5514 5515Updated Notify() values for debug statements in evmisc.c 5516 5517Return proper status from AcpiUtMutexInitialize, not just simply AE_OK. 5518 5519Code and Data Size: Current and previous core subsystem library sizes are 5520shown below. These are the code and data sizes for the acpica.lib produced 5521by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5522any ACPI driver or OSPM code. The debug version of the code includes the 5523debug output trace mechanism and has a much larger code and data size. Note 5524that these values will vary depending on the efficiency of the compiler and 5525the compiler options used during generation. 5526 5527 Previous Release: 5528 5529 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 5530 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 5531 Current Release: 5532 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 5533 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 5534 5535---------------------------------------- 553611 March 2004. Summary of changes for version 20040311: 5537 55381) ACPI CA Core Subsystem: 5539 5540Fixed a problem where errors occurring during the parse phase of control 5541method execution did not abort cleanly. For example, objects created and 5542installed in the namespace were not deleted. This caused all subsequent 5543invocations of the method to return the AE_ALREADY_EXISTS exception. 5544 5545Implemented a mechanism to force a control method to "Serialized" execution 5546if the method attempts to create namespace objects. (The root of the 5547AE_ALREADY_EXISTS problem.) 5548 5549Implemented support for the predefined _OSI "internal" control method. 5550Initial supported strings are "Linux", "Windows 2000", "Windows 2001", and 5551"Windows 2001.1", and can be easily upgraded for new strings as necessary. 5552This feature will allow "other" operating systems to execute the fully 5553tested, "Windows" code path through the ASL code 5554 5555Global Lock Support: Now allows multiple acquires and releases with any 5556internal thread. Removed concept of "owning thread" for this special mutex. 5557 5558Fixed two functions that were inappropriately declaring large objects on the 5559CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage during 5560method execution considerably. 5561 5562Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the 5563S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT. 5564 5565Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs 5566defined on the machine. 5567 5568Implemented two runtime options: One to force all control method execution 5569to "Serialized" to mimic Windows behavior, another to disable _OSI support 5570if it causes problems on a given machine. 5571 5572Code and Data Size: Current and previous core subsystem library sizes are 5573shown below. These are the code and data sizes for the acpica.lib produced 5574by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5575any ACPI driver or OSPM code. The debug version of the code includes the 5576debug output trace mechanism and has a much larger code and data size. Note 5577that these values will vary depending on the efficiency of the compiler and 5578the compiler options used during generation. 5579 5580 Previous Release: 5581 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 5582 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 5583 Current Release: 5584 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 5585 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 5586 55872) iASL Compiler/Disassembler: 5588 5589Fixed an array size problem for FreeBSD that would cause the compiler to 5590fault. 5591 5592---------------------------------------- 559320 February 2004. Summary of changes for version 20040220: 5594 5595 55961) ACPI CA Core Subsystem: 5597 5598Implemented execution of _SxD methods for Device objects in the 5599GetObjectInfo interface. 5600 5601Fixed calls to _SST method to pass the correct arguments. 5602 5603Added a call to _SST on wake to restore to "working" state. 5604 5605Check for End-Of-Buffer failure case in the WalkResources interface. 5606 5607Integrated fix for 64-bit alignment issue in acglobal.h by moving two 5608structures to the beginning of the file. 5609 5610After wake, clear GPE status register(s) before enabling GPEs. 5611 5612After wake, clear/enable power button. (Perhaps we should clear/enable all 5613fixed events upon wake.) 5614 5615Fixed a couple of possible memory leaks in the Namespace manager. 5616 5617Integrated latest acnetbsd.h file. 5618 5619---------------------------------------- 562011 February 2004. Summary of changes for version 20040211: 5621 5622 56231) ACPI CA Core Subsystem: 5624 5625Completed investigation and implementation of the call-by-reference 5626mechanism for control method arguments. 5627 5628Fixed a problem where a store of an object into an indexed package could 5629fail if the store occurs within a different method than the method that 5630created the package. 5631 5632Fixed a problem where the ToDecimal operator could return incorrect results. 5633 5634Fixed a problem where the CopyObject operator could fail on some of the more 5635obscure objects (e.g., Reference objects.) 5636 5637Improved the output of the Debug object to display buffer, package, and 5638index objects. 5639 5640Fixed a problem where constructs of the form "RefOf (ArgX)" did not return 5641the expected result. 5642 5643Added permanent ACPI_REPORT_ERROR macros for all instances of the 5644ACPI_AML_INTERNAL exception. 5645 5646Integrated latest version of acfreebsd.h 5647 5648---------------------------------------- 564916 January 2004. Summary of changes for version 20040116: 5650 5651The purpose of this release is primarily to update the copyright years in 5652each module, thus causing a huge number of diffs. There are a few small 5653functional changes, however. 5654 56551) ACPI CA Core Subsystem: 5656 5657Improved error messages when there is a problem finding one or more of the 5658required base ACPI tables 5659 5660Reintroduced the definition of APIC_HEADER in actbl.h 5661 5662Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h) 5663 5664Removed extraneous reference to NewObj in dsmthdat.c 5665 56662) iASL compiler 5667 5668Fixed a problem introduced in December that disabled the correct disassembly 5669of Resource Templates 5670 5671 5672---------------------------------------- 567303 December 2003. Summary of changes for version 20031203: 5674 56751) ACPI CA Core Subsystem: 5676 5677Changed the initialization of Operation Regions during subsystem 5678init to perform two entire walks of the ACPI namespace; The first 5679to initialize the regions themselves, the second to execute the 5680_REG methods. This fixed some interdependencies across _REG 5681methods found on some machines. 5682 5683Fixed a problem where a Store(Local0, Local1) could simply update 5684the object reference count, and not create a new copy of the 5685object if the Local1 is uninitialized. 5686 5687Implemented support for the _SST reserved method during sleep 5688transitions. 5689 5690Implemented support to clear the SLP_TYP and SLP_EN bits when 5691waking up, this is apparently required by some machines. 5692 5693When sleeping, clear the wake status only if SleepState is not S5. 5694 5695Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect 5696pointer arithmetic advanced a string pointer too far. 5697 5698Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer 5699could be returned if the requested table has not been loaded. 5700 5701Within the support for IRQ resources, restructured the handling of 5702the active and edge/level bits. 5703 5704Fixed a few problems in AcpiPsxExecute() where memory could be 5705leaked under certain error conditions. 5706 5707Improved error messages for the cases where the ACPI mode could 5708not be entered. 5709 5710Code and Data Size: Current and previous core subsystem library 5711sizes are shown below. These are the code and data sizes for the 5712acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 5713these values do not include any ACPI driver or OSPM code. The 5714debug version of the code includes the debug output trace 5715mechanism and has a much larger code and data size. Note that 5716these values will vary depending on the efficiency of the compiler 5717and the compiler options used during generation. 5718 5719 Previous Release (20031029): 5720 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 5721 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 5722 Current Release: 5723 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 5724 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 5725 57262) iASL Compiler/Disassembler: 5727 5728Implemented a fix for the iASL disassembler where a bad index was 5729generated. This was most noticeable on 64-bit platforms 5730 5731 5732---------------------------------------- 573329 October 2003. Summary of changes for version 20031029: 5734 57351) ACPI CA Core Subsystem: 5736 5737 5738Fixed a problem where a level-triggered GPE with an associated 5739_Lxx control method was incorrectly cleared twice. 5740 5741Fixed a problem with the Field support code where an access can 5742occur beyond the end-of-region if the field is non-aligned but 5743extends to the very end of the parent region (resulted in an 5744AE_AML_REGION_LIMIT exception.) 5745 5746Fixed a problem with ACPI Fixed Events where an RT Clock handler 5747would not get invoked on an RTC event. The RTC event bitmasks for 5748the PM1 registers were not being initialized properly. 5749 5750Implemented support for executing _STA and _INI methods for 5751Processor objects. Although this is currently not part of the 5752ACPI specification, there is existing ASL code that depends on the 5753init-time execution of these methods. 5754 5755Implemented and deployed a GetDescriptorName function to decode 5756the various types of internal descriptors. Guards against null 5757descriptors during debug output also. 5758 5759Implemented and deployed a GetNodeName function to extract the 4- 5760character namespace node name. This function simplifies the debug 5761and error output, as well as guarding against null pointers during 5762output. 5763 5764Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to 5765simplify the debug and error output of 64-bit integers. This 5766macro replaces the HIDWORD and LODWORD macros for dumping these 5767integers. 5768 5769Updated the implementation of the Stall() operator to only call 5770AcpiOsStall(), and also return an error if the operand is larger 5771than 255. This preserves the required behavior of not 5772relinquishing the processor, as would happen if AcpiOsSleep() was 5773called for "long stalls". 5774 5775Constructs of the form "Store(LocalX,LocalX)" where LocalX is not 5776initialized are now treated as NOOPs. 5777 5778Cleaned up a handful of warnings during 64-bit generation. 5779 5780Fixed a reported error where and incorrect GPE number was passed 5781to the GPE dispatch handler. This value is only used for error 5782output, however. Used this opportunity to clean up and streamline 5783the GPE dispatch code. 5784 5785Code and Data Size: Current and previous core subsystem library 5786sizes are shown below. These are the code and data sizes for the 5787acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 5788these values do not include any ACPI driver or OSPM code. The 5789 5790debug version of the code includes the debug output trace 5791mechanism and has a much larger code and data size. Note that 5792these values will vary depending on the efficiency of the compiler 5793and the compiler options used during generation. 5794 5795 Previous Release (20031002): 5796 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 5797 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 5798 Current Release: 5799 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 5800 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 5801 5802 58032) iASL Compiler/Disassembler: 5804 5805Updated the iASL compiler to return an error if the operand to the 5806Stall() operator is larger than 255. 5807 5808 5809---------------------------------------- 581002 October 2003. Summary of changes for version 20031002: 5811 5812 58131) ACPI CA Core Subsystem: 5814 5815Fixed a problem with Index Fields where the index was not 5816incremented for fields that require multiple writes to the 5817index/data registers (Fields that are wider than the data 5818register.) 5819 5820Fixed a problem with all Field objects where a write could go 5821beyond the end-of-field if the field was larger than the access 5822granularity and therefore required multiple writes to complete the 5823request. An extra write beyond the end of the field could happen 5824inadvertently. 5825 5826Fixed a problem with Index Fields where a BUFFER_OVERFLOW error 5827would incorrectly be returned if the width of the Data Register 5828was larger than the specified field access width. 5829 5830Completed fixes for LoadTable() and Unload() and verified their 5831operation. Implemented full support for the "DdbHandle" object 5832throughout the ACPI CA subsystem. 5833 5834Implemented full support for the MADT and ECDT tables in the ACPI 5835CA header files. Even though these tables are not directly 5836consumed by ACPI CA, the header definitions are useful for ACPI 5837device drivers. 5838 5839Integrated resource descriptor fixes posted to the Linux ACPI 5840list. This included checks for minimum descriptor length, and 5841support for trailing NULL strings within descriptors that have 5842optional string elements. 5843 5844Code and Data Size: Current and previous core subsystem library 5845sizes are shown below. These are the code and data sizes for the 5846acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 5847these values do not include any ACPI driver or OSPM code. The 5848debug version of the code includes the debug output trace 5849mechanism and has a much larger code and data size. Note that 5850these values will vary depending on the efficiency of the compiler 5851and the compiler options used during generation. 5852 5853 Previous Release (20030918): 5854 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 5855 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 5856 Current Release: 5857 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 5858 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 5859 5860 58612) iASL Compiler: 5862 5863Implemented detection of non-ASCII characters within the input 5864source ASL file. This catches attempts to compile binary (AML) 5865files early in the compile, with an informative error message. 5866 5867Fixed a problem where the disassembler would fault if the output 5868filename could not be generated or if the output file could not be 5869opened. 5870 5871---------------------------------------- 587218 September 2003. Summary of changes for version 20030918: 5873 5874 58751) ACPI CA Core Subsystem: 5876 5877Found and fixed a longstanding problem with the late execution of 5878the various deferred AML opcodes (such as Operation Regions, 5879Buffer Fields, Buffers, and Packages). If the name string 5880specified for the name of the new object placed the object in a 5881scope other than the current scope, the initialization/execution 5882of the opcode failed. The solution to this problem was to 5883implement a mechanism where the late execution of such opcodes 5884does not attempt to lookup/create the name a second time in an 5885incorrect scope. This fixes the "region size computed 5886incorrectly" problem. 5887 5888Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a 5889Global Lock AE_BAD_PARAMETER error. 5890 5891Fixed several 64-bit issues with prototypes, casting and data 5892types. 5893 5894Removed duplicate prototype from acdisasm.h 5895 5896Fixed an issue involving EC Operation Region Detach (Shaohua Li) 5897 5898Code and Data Size: Current and previous core subsystem library 5899sizes are shown below. These are the code and data sizes for the 5900acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 5901these values do not include any ACPI driver or OSPM code. The 5902debug version of the code includes the debug output trace 5903mechanism and has a much larger code and data size. Note that 5904these values will vary depending on the efficiency of the compiler 5905and the compiler options used during generation. 5906 5907 Previous Release: 5908 5909 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 5910 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 5911 Current Release: 5912 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 5913 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 5914 5915 59162) Linux: 5917 5918Fixed the AcpiOsSleep implementation in osunixxf.c to pass the 5919correct sleep time in seconds. 5920 5921---------------------------------------- 592214 July 2003. Summary of changes for version 20030619: 5923 59241) ACPI CA Core Subsystem: 5925 5926Parse SSDTs in order discovered, as opposed to reverse order 5927(Hrvoje Habjanic) 5928 5929Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas 5930Klausner, 5931 Nate Lawson) 5932 5933 59342) Linux: 5935 5936Dynamically allocate SDT list (suggested by Andi Kleen) 5937 5938proc function return value cleanups (Andi Kleen) 5939 5940Correctly handle NMI watchdog during long stalls (Andrew Morton) 5941 5942Make it so acpismp=force works (reported by Andrew Morton) 5943 5944 5945---------------------------------------- 594619 June 2003. Summary of changes for version 20030619: 5947 59481) ACPI CA Core Subsystem: 5949 5950Fix To/FromBCD, eliminating the need for an arch-specific #define. 5951 5952Do not acquire a semaphore in the S5 shutdown path. 5953 5954Fix ex_digits_needed for 0. (Takayoshi Kochi) 5955 5956Fix sleep/stall code reversal. (Andi Kleen) 5957 5958Revert a change having to do with control method calling 5959semantics. 5960 59612) Linux: 5962 5963acpiphp update (Takayoshi Kochi) 5964 5965Export acpi_disabled for sonypi (Stelian Pop) 5966 5967Mention acpismp=force in config help 5968 5969Re-add acpitable.c and acpismp=force. This improves backwards 5970 5971compatibility and also cleans up the code to a significant degree. 5972 5973Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge) 5974 5975---------------------------------------- 597622 May 2003. Summary of changes for version 20030522: 5977 59781) ACPI CA Core Subsystem: 5979 5980Found and fixed a reported problem where an AE_NOT_FOUND error 5981occurred occasionally during _BST evaluation. This turned out to 5982be an Owner ID allocation issue where a called method did not get 5983a new ID assigned to it. Eventually, (after 64k calls), the Owner 5984ID UINT16 would wraparound so that the ID would be the same as the 5985caller's and the called method would delete the caller's 5986namespace. 5987 5988Implemented extended error reporting for control methods that are 5989aborted due to a run-time exception. Output includes the exact 5990AML instruction that caused the method abort, a dump of the method 5991locals and arguments at the time of the abort, and a trace of all 5992nested control method calls. 5993 5994Modified the interpreter to allow the creation of buffers of zero 5995length from the AML code. Implemented new code to ensure that no 5996attempt is made to actually allocate a memory buffer (of length 5997zero) - instead, a simple buffer object with a NULL buffer pointer 5998and length zero is created. A warning is no longer issued when 5999the AML attempts to create a zero-length buffer. 6000 6001Implemented a workaround for the "leading asterisk issue" in 6002_HIDs, _UIDs, and _CIDs in the AML interpreter. One leading 6003asterisk is automatically removed if present in any HID, UID, or 6004CID strings. The iASL compiler will still flag this asterisk as 6005an error, however. 6006 6007Implemented full support for _CID methods that return a package of 6008multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface 6009now additionally returns a device _CID list if present. This 6010required a change to the external interface in order to pass an 6011ACPI_BUFFER object as a parameter since the _CID list is of 6012variable length. 6013 6014Fixed a problem with the new AE_SAME_HANDLER exception where 6015handler initialization code did not know about this exception. 6016 6017Code and Data Size: Current and previous core subsystem library 6018sizes are shown below. These are the code and data sizes for the 6019acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6020these values do not include any ACPI driver or OSPM code. The 6021debug version of the code includes the debug output trace 6022mechanism and has a much larger code and data size. Note that 6023these values will vary depending on the efficiency of the compiler 6024and the compiler options used during generation. 6025 6026 Previous Release (20030509): 6027 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 6028 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 6029 Current Release: 6030 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 6031 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 6032 6033 60342) Linux: 6035 6036Fixed a bug in which we would reinitialize the ACPI interrupt 6037after it was already working, thus disabling all ACPI and the IRQs 6038for any other device sharing the interrupt. (Thanks to Stian 6039Jordet) 6040 6041Toshiba driver update (John Belmonte) 6042 6043Return only 0 or 1 for our interrupt handler status (Andrew 6044Morton) 6045 6046 60473) iASL Compiler: 6048 6049Fixed a reported problem where multiple (nested) ElseIf() 6050statements were not handled correctly by the compiler, resulting 6051in incorrect warnings and incorrect AML code. This was a problem 6052in both the ASL parser and the code generator. 6053 6054 60554) Documentation: 6056 6057Added changes to existing interfaces, new exception codes, and new 6058text concerning reference count object management versus garbage 6059collection. 6060 6061---------------------------------------- 606209 May 2003. Summary of changes for version 20030509. 6063 6064 60651) ACPI CA Core Subsystem: 6066 6067Changed the subsystem initialization sequence to hold off 6068installation of address space handlers until the hardware has been 6069initialized and the system has entered ACPI mode. This is because 6070the installation of space handlers can cause _REG methods to be 6071run. Previously, the _REG methods could potentially be run before 6072ACPI mode was enabled. 6073 6074Fixed some memory leak issues related to address space handler and 6075notify handler installation. There were some problems with the 6076reference count mechanism caused by the fact that the handler 6077objects are shared across several namespace objects. 6078 6079Fixed a reported problem where reference counts within the 6080namespace were not properly updated when named objects created by 6081method execution were deleted. 6082 6083Fixed a reported problem where multiple SSDTs caused a deletion 6084issue during subsystem termination. Restructured the table data 6085structures to simplify the linked lists and the related code. 6086 6087Fixed a problem where the table ID associated with secondary 6088tables (SSDTs) was not being propagated into the namespace objects 6089created by those tables. This would only present a problem for 6090tables that are unloaded at run-time, however. 6091 6092Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE 6093type as the length parameter (instead of UINT32). 6094 6095Solved a long-standing problem where an ALREADY_EXISTS error 6096appears on various systems. This problem could happen when there 6097are multiple PCI_Config operation regions under a single PCI root 6098bus. This doesn't happen very frequently, but there are some 6099systems that do this in the ASL. 6100 6101Fixed a reported problem where the internal DeleteNode function 6102was incorrectly handling the case where a namespace node was the 6103first in the parent's child list, and had additional peers (not 6104the only child, but first in the list of children.) 6105 6106Code and Data Size: Current core subsystem library sizes are shown 6107below. These are the code and data sizes for the acpica.lib 6108produced by the Microsoft Visual C++ 6.0 compiler, and these 6109values do not include any ACPI driver or OSPM code. The debug 6110version of the code includes the debug output trace mechanism and 6111has a much larger code and data size. Note that these values will 6112vary depending on the efficiency of the compiler and the compiler 6113options used during generation. 6114 6115 Previous Release 6116 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 6117 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 6118 Current Release: 6119 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 6120 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 6121 6122 61232) Linux: 6124 6125Allow ":" in OS override string (Ducrot Bruno) 6126 6127Kobject fix (Greg KH) 6128 6129 61303 iASL Compiler/Disassembler: 6131 6132Fixed a problem in the generation of the C source code files (AML 6133is emitted in C source statements for BIOS inclusion) where the 6134Ascii dump that appears within a C comment at the end of each line 6135could cause a compile time error if the AML sequence happens to 6136have an open comment or close comment sequence embedded. 6137 6138 6139---------------------------------------- 614024 April 2003. Summary of changes for version 20030424. 6141 6142 61431) ACPI CA Core Subsystem: 6144 6145Support for big-endian systems has been implemented. Most of the 6146support has been invisibly added behind big-endian versions of the 6147ACPI_MOVE_* macros. 6148 6149Fixed a problem in AcpiHwDisableGpeBlock() and 6150AcpiHwClearGpeBlock() where an incorrect offset was passed to the 6151low level hardware write routine. The offset parameter was 6152actually eliminated from the low level read/write routines because 6153they had become obsolete. 6154 6155Fixed a problem where a handler object was deleted twice during 6156the removal of a fixed event handler. 6157 6158 61592) Linux: 6160 6161A fix for SMP systems with link devices was contributed by 6162 6163Compaq's Dan Zink. 6164 6165(2.5) Return whether we handled the interrupt in our IRQ handler. 6166(Linux ISRs no longer return void, so we can propagate the handler 6167return value from the ACPI CA core back to the OS.) 6168 6169 6170 61713) Documentation: 6172 6173The ACPI CA Programmer Reference has been updated to reflect new 6174interfaces and changes to existing interfaces. 6175 6176---------------------------------------- 617728 March 2003. Summary of changes for version 20030328. 6178 61791) ACPI CA Core Subsystem: 6180 6181The GPE Block Device support has been completed. New interfaces 6182are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event 6183interfaces (enable, disable, clear, getstatus) have been split 6184into separate interfaces for Fixed Events and General Purpose 6185Events (GPEs) in order to support GPE Block Devices properly. 6186 6187Fixed a problem where the error message "Failed to acquire 6188semaphore" would appear during operations on the embedded 6189controller (EC). 6190 6191Code and Data Size: Current core subsystem library sizes are shown 6192below. These are the code and data sizes for the acpica.lib 6193produced by the Microsoft Visual C++ 6.0 compiler, and these 6194values do not include any ACPI driver or OSPM code. The debug 6195version of the code includes the debug output trace mechanism and 6196has a much larger code and data size. Note that these values will 6197vary depending on the efficiency of the compiler and the compiler 6198options used during generation. 6199 6200 Previous Release 6201 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 6202 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 6203 Current Release: 6204 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 6205 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 6206 6207 6208---------------------------------------- 620928 February 2003. Summary of changes for version 20030228. 6210 6211 62121) ACPI CA Core Subsystem: 6213 6214The GPE handling and dispatch code has been completely overhauled 6215in preparation for support of GPE Block Devices (ID ACPI0006). 6216This affects internal data structures and code only; there should 6217be no differences visible externally. One new file has been 6218added, evgpeblk.c 6219 6220The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only 6221fields that are used to determine the GPE block lengths. The 6222REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address 6223structures are ignored. This is per the ACPI specification but it 6224isn't very clear. The full 256 Block 0/1 GPEs are now supported 6225(the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128). 6226 6227In the SCI interrupt handler, removed the read of the PM1_CONTROL 6228register to look at the SCI_EN bit. On some machines, this read 6229causes an SMI event and greatly slows down SCI events. (This may 6230in fact be the cause of slow battery status response on some 6231systems.) 6232 6233Fixed a problem where a store of a NULL string to a package object 6234could cause the premature deletion of the object. This was seen 6235during execution of the battery _BIF method on some systems, 6236resulting in no battery data being returned. 6237 6238Added AcpiWalkResources interface to simplify parsing of resource 6239lists. 6240 6241Code and Data Size: Current core subsystem library sizes are shown 6242below. These are the code and data sizes for the acpica.lib 6243produced by the Microsoft Visual C++ 6.0 compiler, and these 6244values do not include any ACPI driver or OSPM code. The debug 6245version of the code includes the debug output trace mechanism and 6246has a much larger code and data size. Note that these values will 6247vary depending on the efficiency of the compiler and the compiler 6248options used during generation. 6249 6250 Previous Release 6251 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 6252 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 6253 Current Release: 6254 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 6255 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 6256 6257 62582) Linux 6259 6260S3 fixes (Ole Rohne) 6261 6262Update ACPI PHP driver with to use new acpi_walk_resource API 6263(Bjorn Helgaas) 6264 6265Add S4BIOS support (Pavel Machek) 6266 6267Map in entire table before performing checksum (John Stultz) 6268 6269Expand the mem= cmdline to allow the specification of reserved and 6270ACPI DATA blocks (Pavel Machek) 6271 6272Never use ACPI on VISWS 6273 6274Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez) 6275 6276Revert a change that allowed P_BLK lengths to be 4 or 5. This is 6277causing us to think that some systems support C2 when they really 6278don't. 6279 6280Do not count processor objects for non-present CPUs (Thanks to 6281Dominik Brodowski) 6282 6283 62843) iASL Compiler: 6285 6286Fixed a problem where ASL include files could not be found and 6287opened. 6288 6289Added support for the _PDC reserved name. 6290 6291 6292---------------------------------------- 629322 January 2003. Summary of changes for version 20030122. 6294 6295 62961) ACPI CA Core Subsystem: 6297 6298Added a check for constructs of the form: Store (Local0, Local0) 6299where Local0 is not initialized. Apparently, some BIOS 6300programmers believe that this is a NOOP. Since this store doesn't 6301do anything anyway, the new prototype behavior will ignore this 6302error. This is a case where we can relax the strict checking in 6303the interpreter in the name of compatibility. 6304 6305 63062) Linux 6307 6308The AcpiSrc Source Conversion Utility has been released with the 6309Linux package for the first time. This is the utility that is 6310used to convert the ACPI CA base source code to the Linux version. 6311 6312(Both) Handle P_BLK lengths shorter than 6 more gracefully 6313 6314(Both) Move more headers to include/acpi, and delete an unused 6315header. 6316 6317(Both) Move drivers/acpi/include directory to include/acpi 6318 6319(Both) Boot functions don't use cmdline, so don't pass it around 6320 6321(Both) Remove include of unused header (Adrian Bunk) 6322 6323(Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since 6324the 6325former now also includes the latter, acpiphp.h only needs the one, 6326now. 6327 6328(2.5) Make it possible to select method of bios restoring after S3 6329resume. [=> no more ugly ifdefs] (Pavel Machek) 6330 6331(2.5) Make proc write interfaces work (Pavel Machek) 6332 6333(2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski) 6334 6335(2.5) Break out ACPI Perf code into its own module, under cpufreq 6336(Dominik Brodowski) 6337 6338(2.4) S4BIOS support (Ducrot Bruno) 6339 6340(2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio 6341Visinoni) 6342 6343 63443) iASL Compiler: 6345 6346Added support to disassemble SSDT and PSDTs. 6347 6348Implemented support to obtain SSDTs from the Windows registry if 6349available. 6350 6351 6352---------------------------------------- 635309 January 2003. Summary of changes for version 20030109. 6354 63551) ACPI CA Core Subsystem: 6356 6357Changed the behavior of the internal Buffer-to-String conversion 6358function. The current ACPI specification states that the contents 6359of the buffer are "converted to a string of two-character 6360hexadecimal numbers, each separated by a space". Unfortunately, 6361this definition is not backwards compatible with existing ACPI 1.0 6362implementations (although the behavior was not defined in the ACPI 63631.0 specification). The new behavior simply copies data from the 6364buffer to the string until a null character is found or the end of 6365the buffer is reached. The new String object is always null 6366terminated. This problem was seen during the generation of _BIF 6367battery data where incorrect strings were returned for battery 6368type, etc. This will also require an errata to the ACPI 6369specification. 6370 6371Renamed all instances of NATIVE_UINT and NATIVE_INT to 6372ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively. 6373 6374Copyright in all module headers (both Linux and non-Linux) has be 6375updated to 2003. 6376 6377Code and Data Size: Current core subsystem library sizes are shown 6378below. These are the code and data sizes for the acpica.lib 6379produced by the Microsoft Visual C++ 6.0 compiler, and these 6380values do not include any ACPI driver or OSPM code. The debug 6381version of the code includes the debug output trace mechanism and 6382has a much larger code and data size. Note that these values will 6383vary depending on the efficiency of the compiler and the compiler 6384options used during generation. 6385 6386 Previous Release 6387 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 6388 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 6389 Current Release: 6390 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 6391 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 6392 6393 63942) Linux 6395 6396Fixed an oops on module insertion/removal (Matthew Tippett) 6397 6398(2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante) 6399 6400(2.5) Replace pr_debug (Randy Dunlap) 6401 6402(2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski) 6403 6404(Both) Eliminate spawning of thread from timer callback, in favor 6405of schedule_work() 6406 6407(Both) Show Lid status in /proc (Zdenek OGAR Skalak) 6408 6409(Both) Added define for Fixed Function HW region (Matthew Wilcox) 6410 6411(Both) Add missing statics to button.c (Pavel Machek) 6412 6413Several changes have been made to the source code translation 6414utility that generates the Linux Code in order to make the code 6415more "Linux-like": 6416 6417All typedefs on structs and unions have been removed in keeping 6418with the Linux coding style. 6419 6420Removed the non-Linux SourceSafe module revision number from each 6421module header. 6422 6423Completed major overhaul of symbols to be lowercased for linux. 6424Doubled the number of symbols that are lowercased. 6425 6426Fixed a problem where identifiers within procedure headers and 6427within quotes were not fully lower cased (they were left with a 6428starting capital.) 6429 6430Some C macros whose only purpose is to allow the generation of 16- 6431bit code are now completely removed in the Linux code, increasing 6432readability and maintainability. 6433 6434---------------------------------------- 6435 643612 December 2002. Summary of changes for version 20021212. 6437 6438 64391) ACPI CA Core Subsystem: 6440 6441Fixed a problem where the creation of a zero-length AML Buffer 6442would cause a fault. 6443 6444Fixed a problem where a Buffer object that pointed to a static AML 6445buffer (in an ACPI table) could inadvertently be deleted, causing 6446memory corruption. 6447 6448Fixed a problem where a user buffer (passed in to the external 6449ACPI CA interfaces) could be overwritten if the buffer was too 6450small to complete the operation, causing memory corruption. 6451 6452Fixed a problem in the Buffer-to-String conversion code where a 6453string of length one was always returned, regardless of the size 6454of the input Buffer object. 6455 6456Removed the NATIVE_CHAR data type across the entire source due to 6457lack of need and lack of consistent use. 6458 6459Code and Data Size: Current core subsystem library sizes are shown 6460below. These are the code and data sizes for the acpica.lib 6461produced by the Microsoft Visual C++ 6.0 compiler, and these 6462values do not include any ACPI driver or OSPM code. The debug 6463version of the code includes the debug output trace mechanism and 6464has a much larger code and data size. Note that these values will 6465vary depending on the efficiency of the compiler and the compiler 6466options used during generation. 6467 6468 Previous Release 6469 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 6470 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 6471 Current Release: 6472 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 6473 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 6474 6475 6476---------------------------------------- 647705 December 2002. Summary of changes for version 20021205. 6478 64791) ACPI CA Core Subsystem: 6480 6481Fixed a problem where a store to a String or Buffer object could 6482cause corruption of the DSDT if the object type being stored was 6483the same as the target object type and the length of the object 6484being stored was equal to or smaller than the original (existing) 6485target object. This was seen to cause corruption of battery _BIF 6486buffers if the _BIF method modified the buffer on the fly. 6487 6488Fixed a problem where an internal error was generated if a control 6489method invocation was used in an OperationRegion, Buffer, or 6490Package declaration. This was caused by the deferred parsing of 6491the control method and thus the deferred creation of the internal 6492method object. The solution to this problem was to create the 6493internal method object at the moment the method is encountered in 6494the first pass - so that subsequent references to the method will 6495able to obtain the required parameter count and thus properly 6496parse the method invocation. This problem presented itself as an 6497AE_AML_INTERNAL during the pass 1 parse phase during table load. 6498 6499Fixed a problem where the internal String object copy routine did 6500not always allocate sufficient memory for the target String object 6501and caused memory corruption. This problem was seen to cause 6502"Allocation already present in list!" errors as memory allocation 6503became corrupted. 6504 6505Implemented a new function for the evaluation of namespace objects 6506that allows the specification of the allowable return object 6507types. This simplifies a lot of code that checks for a return 6508object of one or more specific objects returned from the 6509evaluation (such as _STA, etc.) This may become and external 6510function if it would be useful to ACPI-related drivers. 6511 6512Completed another round of prefixing #defines with "ACPI_" for 6513clarity. 6514 6515Completed additional code restructuring to allow more modular 6516linking for iASL compiler and AcpiExec. Several files were split 6517creating new files. New files: nsparse.c dsinit.c evgpe.c 6518 6519Implemented an abort mechanism to terminate an executing control 6520method via the AML debugger. This feature is useful for debugging 6521control methods that depend (wait) for specific hardware 6522responses. 6523 6524Code and Data Size: Current core subsystem library sizes are shown 6525below. These are the code and data sizes for the acpica.lib 6526produced by the Microsoft Visual C++ 6.0 compiler, and these 6527values do not include any ACPI driver or OSPM code. The debug 6528version of the code includes the debug output trace mechanism and 6529has a much larger code and data size. Note that these values will 6530vary depending on the efficiency of the compiler and the compiler 6531options used during generation. 6532 6533 Previous Release 6534 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 6535 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 6536 Current Release: 6537 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 6538 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 6539 6540 65412) iASL Compiler/Disassembler 6542 6543Fixed a compiler code generation problem for "Interrupt" Resource 6544Descriptors. If specified in the ASL, the optional "Resource 6545Source Index" and "Resource Source" fields were not inserted into 6546the correct location within the AML resource descriptor, creating 6547an invalid descriptor. 6548 6549Fixed a disassembler problem for "Interrupt" resource descriptors. 6550The optional "Resource Source Index" and "Resource Source" fields 6551were ignored. 6552 6553 6554---------------------------------------- 655522 November 2002. Summary of changes for version 20021122. 6556 6557 65581) ACPI CA Core Subsystem: 6559 6560Fixed a reported problem where an object stored to a Method Local 6561or Arg was not copied to a new object during the store - the 6562object pointer was simply copied to the Local/Arg. This caused 6563all subsequent operations on the Local/Arg to also affect the 6564original source of the store operation. 6565 6566Fixed a problem where a store operation to a Method Local or Arg 6567was not completed properly if the Local/Arg contained a reference 6568(from RefOf) to a named field. The general-purpose store-to- 6569namespace-node code is now used so that this case is handled 6570automatically. 6571 6572Fixed a problem where the internal object copy routine would cause 6573a protection fault if the object being copied was a Package and 6574contained either 1) a NULL package element or 2) a nested sub- 6575package. 6576 6577Fixed a problem with the GPE initialization that resulted from an 6578ambiguity in the ACPI specification. One section of the 6579specification states that both the address and length of the GPE 6580block must be zero if the block is not supported. Another section 6581implies that only the address need be zero if the block is not 6582supported. The code has been changed so that both the address and 6583the length must be non-zero to indicate a valid GPE block (i.e., 6584if either the address or the length is zero, the GPE block is 6585invalid.) 6586 6587Code and Data Size: Current core subsystem library sizes are shown 6588below. These are the code and data sizes for the acpica.lib 6589produced by the Microsoft Visual C++ 6.0 compiler, and these 6590values do not include any ACPI driver or OSPM code. The debug 6591version of the code includes the debug output trace mechanism and 6592has a much larger code and data size. Note that these values will 6593vary depending on the efficiency of the compiler and the compiler 6594options used during generation. 6595 6596 Previous Release 6597 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 6598 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 6599 Current Release: 6600 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 6601 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 6602 6603 66042) Linux 6605 6606Cleaned up EC driver. Exported an external EC read/write 6607interface. By going through this, other drivers (most notably 6608sonypi) will be able to serialize access to the EC. 6609 6610 66113) iASL Compiler/Disassembler 6612 6613Implemented support to optionally generate include files for both 6614ASM and C (the -i switch). This simplifies BIOS development by 6615automatically creating include files that contain external 6616declarations for the symbols that are created within the 6617 6618(optionally generated) ASM and C AML source files. 6619 6620 6621---------------------------------------- 662215 November 2002. Summary of changes for version 20021115. 6623 66241) ACPI CA Core Subsystem: 6625 6626Fixed a memory leak problem where an error during resolution of 6627 6628method arguments during a method invocation from another method 6629failed to cleanup properly by deleting all successfully resolved 6630argument objects. 6631 6632Fixed a problem where the target of the Index() operator was not 6633correctly constructed if the source object was a package. This 6634problem has not been detected because the use of a target operand 6635with Index() is very rare. 6636 6637Fixed a problem with the Index() operator where an attempt was 6638made to delete the operand objects twice. 6639 6640Fixed a problem where an attempt was made to delete an operand 6641twice during execution of the CondRefOf() operator if the target 6642did not exist. 6643 6644Implemented the first of perhaps several internal create object 6645functions that create and initialize a specific object type. This 6646consolidates duplicated code wherever the object is created, thus 6647shrinking the size of the subsystem. 6648 6649Implemented improved debug/error messages for errors that occur 6650during nested method invocations. All executing method pathnames 6651are displayed (with the error) as the call stack is unwound - thus 6652simplifying debug. 6653 6654Fixed a problem introduced in the 10/02 release that caused 6655premature deletion of a buffer object if a buffer was used as an 6656ASL operand where an integer operand is required (Thus causing an 6657implicit object conversion from Buffer to Integer.) The change in 6658the 10/02 release was attempting to fix a memory leak (albeit 6659incorrectly.) 6660 6661Code and Data Size: Current core subsystem library sizes are shown 6662below. These are the code and data sizes for the acpica.lib 6663produced by the Microsoft Visual C++ 6.0 compiler, and these 6664values do not include any ACPI driver or OSPM code. The debug 6665version of the code includes the debug output trace mechanism and 6666has a much larger code and data size. Note that these values will 6667vary depending on the efficiency of the compiler and the compiler 6668options used during generation. 6669 6670 Previous Release 6671 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 6672 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 6673 Current Release: 6674 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 6675 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 6676 6677 66782) Linux 6679 6680Changed the implementation of the ACPI semaphores to use down() 6681instead of down_interruptable(). It is important that the 6682execution of ACPI control methods not be interrupted by signals. 6683Methods must run to completion, or the system may be left in an 6684unknown/unstable state. 6685 6686Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set. 6687(Shawn Starr) 6688 6689 66903) iASL Compiler/Disassembler 6691 6692 6693Changed the default location of output files. All output files 6694are now placed in the current directory by default instead of in 6695the directory of the source file. This change may affect some 6696existing makefiles, but it brings the behavior of the compiler in 6697line with other similar tools. The location of the output files 6698can be overridden with the -p command line switch. 6699 6700 6701---------------------------------------- 670211 November 2002. Summary of changes for version 20021111. 6703 6704 67050) ACPI Specification 2.0B is released and is now available at: 6706http://www.acpi.info/index.html 6707 6708 67091) ACPI CA Core Subsystem: 6710 6711Implemented support for the ACPI 2.0 SMBus Operation Regions. 6712This includes the early detection and handoff of the request to 6713the SMBus region handler (avoiding all of the complex field 6714support code), and support for the bidirectional return packet 6715from an SMBus write operation. This paves the way for the 6716development of SMBus drivers in each host operating system. 6717 6718Fixed a problem where the semaphore WAIT_FOREVER constant was 6719defined as 32 bits, but must be 16 bits according to the ACPI 6720specification. This had the side effect of causing ASL 6721Mutex/Event timeouts even though the ASL code requested a wait 6722forever. Changed all internal references to the ACPI timeout 6723parameter to 16 bits to prevent future problems. Changed the name 6724of WAIT_FOREVER to ACPI_WAIT_FOREVER. 6725 6726Code and Data Size: Current core subsystem library sizes are shown 6727below. These are the code and data sizes for the acpica.lib 6728produced by the Microsoft Visual C++ 6.0 compiler, and these 6729values do not include any ACPI driver or OSPM code. The debug 6730version of the code includes the debug output trace mechanism and 6731has a much larger code and data size. Note that these values will 6732vary depending on the efficiency of the compiler and the compiler 6733options used during generation. 6734 6735 Previous Release 6736 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 6737 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 6738 Current Release: 6739 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 6740 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 6741 6742 67432) Linux 6744 6745Module loading/unloading fixes (John Cagle) 6746 6747 67483) iASL Compiler/Disassembler 6749 6750Added support for the SMBBlockProcessCall keyword (ACPI 2.0) 6751 6752Implemented support for the disassembly of all SMBus protocol 6753keywords (SMBQuick, SMBWord, etc.) 6754 6755---------------------------------------- 675601 November 2002. Summary of changes for version 20021101. 6757 6758 67591) ACPI CA Core Subsystem: 6760 6761Fixed a problem where platforms that have a GPE1 block but no GPE0 6762block were not handled correctly. This resulted in a "GPE 6763overlap" error message. GPE0 is no longer required. 6764 6765Removed code added in the previous release that inserted nodes 6766into the namespace in alphabetical order. This caused some side- 6767effects on various machines. The root cause of the problem is 6768still under investigation since in theory, the internal ordering 6769of the namespace nodes should not matter. 6770 6771 6772Enhanced error reporting for the case where a named object is not 6773found during control method execution. The full ACPI namepath 6774(name reference) of the object that was not found is displayed in 6775this case. 6776 6777Note: as a result of the overhaul of the namespace object types in 6778the previous release, the namespace nodes for the predefined 6779scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE 6780instead of ACPI_TYPE_ANY. This simplifies the namespace 6781management code but may affect code that walks the namespace tree 6782looking for specific object types. 6783 6784Code and Data Size: Current core subsystem library sizes are shown 6785below. These are the code and data sizes for the acpica.lib 6786produced by the Microsoft Visual C++ 6.0 compiler, and these 6787values do not include any ACPI driver or OSPM code. The debug 6788version of the code includes the debug output trace mechanism and 6789has a much larger code and data size. Note that these values will 6790vary depending on the efficiency of the compiler and the compiler 6791options used during generation. 6792 6793 Previous Release 6794 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 6795 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 6796 Current Release: 6797 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 6798 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 6799 6800 68012) Linux 6802 6803Fixed a problem introduced in the previous release where the 6804Processor and Thermal objects were not recognized and installed in 6805/proc. This was related to the scope type change described above. 6806 6807 68083) iASL Compiler/Disassembler 6809 6810Implemented the -g option to get all of the required ACPI tables 6811from the registry and save them to files (Windows version of the 6812compiler only.) The required tables are the FADT, FACS, and DSDT. 6813 6814Added ACPI table checksum validation during table disassembly in 6815order to catch corrupted tables. 6816 6817 6818---------------------------------------- 681922 October 2002. Summary of changes for version 20021022. 6820 68211) ACPI CA Core Subsystem: 6822 6823Implemented a restriction on the Scope operator that the target 6824must already exist in the namespace at the time the operator is 6825encountered (during table load or method execution). In other 6826words, forward references are not allowed and Scope() cannot 6827create a new object. This changes the previous behavior where the 6828interpreter would create the name if not found. This new behavior 6829correctly enables the search-to-root algorithm during namespace 6830lookup of the target name. Because of this upsearch, this fixes 6831the known Compaq _SB_.OKEC problem and makes both the AML 6832interpreter and iASL compiler compatible with other ACPI 6833implementations. 6834 6835Completed a major overhaul of the internal ACPI object types for 6836the ACPI Namespace and the associated operand objects. Many of 6837these types had become obsolete with the introduction of the two- 6838pass namespace load. This cleanup simplifies the code and makes 6839the entire namespace load mechanism much clearer and easier to 6840understand. 6841 6842Improved debug output for tracking scope opening/closing to help 6843diagnose scoping issues. The old scope name as well as the new 6844scope name are displayed. Also improved error messages for 6845problems with ASL Mutex objects and error messages for GPE 6846problems. 6847 6848Cleaned up the namespace dump code, removed obsolete code. 6849 6850All string output (for all namespace/object dumps) now uses the 6851common ACPI string output procedure which handles escapes properly 6852and does not emit non-printable characters. 6853 6854Fixed some issues with constants in the 64-bit version of the 6855local C library (utclib.c) 6856 6857 68582) Linux 6859 6860EC Driver: No longer attempts to acquire the Global Lock at 6861interrupt level. 6862 6863 68643) iASL Compiler/Disassembler 6865 6866Implemented ACPI 2.0B grammar change that disallows all Type 1 and 68672 opcodes outside of a control method. This means that the 6868"executable" operators (versus the "namespace" operators) cannot 6869be used at the table level; they can only be used within a control 6870method. 6871 6872Implemented the restriction on the Scope() operator where the 6873target must already exist in the namespace at the time the 6874operator is encountered (during ASL compilation). In other words, 6875forward references are not allowed and Scope() cannot create a new 6876object. This makes the iASL compiler compatible with other ACPI 6877implementations and makes the Scope() implementation adhere to the 6878ACPI specification. 6879 6880Fixed a problem where namepath optimization for the Alias operator 6881was optimizing the wrong path (of the two namepaths.) This caused 6882a "Missing alias link" error message. 6883 6884Fixed a problem where an "unknown reserved name" warning could be 6885incorrectly generated for names like "_SB" when the trailing 6886underscore is not used in the original ASL. 6887 6888Fixed a problem where the reserved name check did not handle 6889NamePaths with multiple NameSegs correctly. The first nameseg of 6890the NamePath was examined instead of the last NameSeg. 6891 6892 6893---------------------------------------- 6894 689502 October 2002. Summary of changes for this release. 6896 6897 68981) ACPI CA Core Subsystem version 20021002: 6899 6900Fixed a problem where a store/copy of a string to an existing 6901string did not always set the string length properly in the String 6902object. 6903 6904Fixed a reported problem with the ToString operator where the 6905behavior was identical to the ToHexString operator instead of just 6906simply converting a raw buffer to a string data type. 6907 6908Fixed a problem where CopyObject and the other "explicit" 6909conversion operators were not updating the internal namespace node 6910type as part of the store operation. 6911 6912Fixed a memory leak during implicit source operand conversion 6913where the original object was not deleted if it was converted to a 6914new object of a different type. 6915 6916Enhanced error messages for all problems associated with namespace 6917lookups. Common procedure generates and prints the lookup name as 6918well as the formatted status. 6919 6920Completed implementation of a new design for the Alias support 6921within the namespace. The existing design did not handle the case 6922where a new object was assigned to one of the two names due to the 6923use of an explicit conversion operator, resulting in the two names 6924pointing to two different objects. The new design simply points 6925the Alias name to the original name node - not to the object. 6926This results in a level of indirection that must be handled in the 6927name resolution mechanism. 6928 6929Code and Data Size: Current core subsystem library sizes are shown 6930below. These are the code and data sizes for the acpica.lib 6931produced by the Microsoft Visual C++ 6.0 compiler, and these 6932values do not include any ACPI driver or OSPM code. The debug 6933version of the code includes the debug output trace mechanism and 6934has a larger code and data size. Note that these values will vary 6935depending on the efficiency of the compiler and the compiler 6936options used during generation. 6937 6938 Previous Release 6939 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 6940 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 6941 Current Release: 6942 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 6943 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 6944 6945 69462) Linux 6947 6948Initialize thermal driver's timer before it is used. (Knut 6949Neumann) 6950 6951Allow handling negative celsius values. (Kochi Takayoshi) 6952 6953Fix thermal management and make trip points. R/W (Pavel Machek) 6954 6955Fix /proc/acpi/sleep. (P. Christeas) 6956 6957IA64 fixes. (David Mosberger) 6958 6959Fix reversed logic in blacklist code. (Sergio Monteiro Basto) 6960 6961Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik 6962Brodowski) 6963 6964 69653) iASL Compiler/Disassembler 6966 6967Clarified some warning/error messages. 6968 6969 6970---------------------------------------- 697118 September 2002. Summary of changes for this release. 6972 6973 69741) ACPI CA Core Subsystem version 20020918: 6975 6976Fixed a reported problem with reference chaining (via the Index() 6977and RefOf() operators) in the ObjectType() and SizeOf() operators. 6978The definition of these operators includes the dereferencing of 6979all chained references to return information on the base object. 6980 6981Fixed a problem with stores to indexed package elements - the 6982existing code would not complete the store if an "implicit 6983conversion" was not performed. In other words, if the existing 6984object (package element) was to be replaced completely, the code 6985didn't handle this case. 6986 6987Relaxed typechecking on the ASL "Scope" operator to allow the 6988target name to refer to an object of type Integer, String, or 6989Buffer, in addition to the scoping object types (Device, 6990predefined Scopes, Processor, PowerResource, and ThermalZone.) 6991This allows existing AML code that has workarounds for a bug in 6992Windows to function properly. A warning is issued, however. This 6993affects both the AML interpreter and the iASL compiler. Below is 6994an example of this type of ASL code: 6995 6996 Name(DEB,0x00) 6997 Scope(DEB) 6998 { 6999 7000Fixed some reported problems with 64-bit integer support in the 7001local implementation of C library functions (clib.c) 7002 7003 70042) Linux 7005 7006Use ACPI fix map region instead of IOAPIC region, since it is 7007undefined in non-SMP. 7008 7009Ensure that the SCI has the proper polarity and trigger, even on 7010systems that do not have an interrupt override entry in the MADT. 7011 70122.5 big driver reorganization (Pat Mochel) 7013 7014Use early table mapping code from acpitable.c (Andi Kleen) 7015 7016New blacklist entries (Andi Kleen) 7017 7018Blacklist improvements. Split blacklist code out into a separate 7019file. Move checking the blacklist to very early. Previously, we 7020would use ACPI tables, and then halfway through init, check the 7021blacklist -- too late. Now, it's early enough to completely fall- 7022back to non-ACPI. 7023 7024 70253) iASL Compiler/Disassembler version 20020918: 7026 7027Fixed a problem where the typechecking code didn't know that an 7028alias could point to a method. In other words, aliases were not 7029being dereferenced during typechecking. 7030 7031 7032---------------------------------------- 703329 August 2002. Summary of changes for this release. 7034 70351) ACPI CA Core Subsystem Version 20020829: 7036 7037If the target of a Scope() operator already exists, it must be an 7038object type that actually opens a scope -- such as a Device, 7039Method, Scope, etc. This is a fatal runtime error. Similar error 7040check has been added to the iASL compiler also. 7041 7042Tightened up the namespace load to disallow multiple names in the 7043same scope. This previously was allowed if both objects were of 7044the same type. (i.e., a lookup was the same as entering a new 7045name). 7046 7047 70482) Linux 7049 7050Ensure that the ACPI interrupt has the proper trigger and 7051polarity. 7052 7053local_irq_disable is extraneous. (Matthew Wilcox) 7054 7055Make "acpi=off" actually do what it says, and not use the ACPI 7056interpreter *or* the tables. 7057 7058Added arch-neutral support for parsing SLIT and SRAT tables (Kochi 7059Takayoshi) 7060 7061 70623) iASL Compiler/Disassembler Version 20020829: 7063 7064Implemented namepath optimization for name declarations. For 7065example, a declaration like "Method (\_SB_.ABCD)" would get 7066optimized to "Method (ABCD)" if the declaration is within the 7067\_SB_ scope. This optimization is in addition to the named 7068reference path optimization first released in the previous 7069version. This would seem to complete all possible optimizations 7070for namepaths within the ASL/AML. 7071 7072If the target of a Scope() operator already exists, it must be an 7073object type that actually opens a scope -- such as a Device, 7074Method, Scope, etc. 7075 7076Implemented a check and warning for unreachable code in the same 7077block below a Return() statement. 7078 7079Fixed a problem where the listing file was not generated if the 7080compiler aborted if the maximum error count was exceeded (200). 7081 7082Fixed a problem where the typechecking of method return values was 7083broken. This includes the check for a return value when the 7084method is invoked as a TermArg (a return value is expected.) 7085 7086Fixed a reported problem where EOF conditions during a quoted 7087string or comment caused a fault. 7088 7089 7090---------------------------------------- 709115 August 2002. Summary of changes for this release. 7092 70931) ACPI CA Core Subsystem Version 20020815: 7094 7095Fixed a reported problem where a Store to a method argument that 7096contains a reference did not perform the indirect store correctly. 7097This problem was created during the conversion to the new 7098reference object model - the indirect store to a method argument 7099code was not updated to reflect the new model. 7100 7101Reworked the ACPI mode change code to better conform to ACPI 2.0, 7102handle corner cases, and improve code legibility (Kochi Takayoshi) 7103 7104Fixed a problem with the pathname parsing for the carat (^) 7105prefix. The heavy use of the carat operator by the new namepath 7106optimization in the iASL compiler uncovered a problem with the AML 7107interpreter handling of this prefix. In the case where one or 7108more carats precede a single nameseg, the nameseg was treated as 7109standalone and the search rule (to root) was inadvertently 7110applied. This could cause both the iASL compiler and the 7111interpreter to find the wrong object or to miss the error that 7112should occur if the object does not exist at that exact pathname. 7113 7114Found and fixed the problem where the HP Pavilion DSDT would not 7115load. This was a relatively minor tweak to the table loading code 7116(a problem caused by the unexpected encounter with a method 7117invocation not within a control method), but it does not solve the 7118overall issue of the execution of AML code at the table level. 7119This investigation is still ongoing. 7120 7121Code and Data Size: Current core subsystem library sizes are shown 7122below. These are the code and data sizes for the acpica.lib 7123produced by the Microsoft Visual C++ 6.0 compiler, and these 7124values do not include any ACPI driver or OSPM code. The debug 7125version of the code includes the debug output trace mechanism and 7126has a larger code and data size. Note that these values will vary 7127depending on the efficiency of the compiler and the compiler 7128options used during generation. 7129 7130 Previous Release 7131 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 7132 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 7133 Current Release: 7134 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 7135 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 7136 7137 71382) Linux 7139 7140Remove redundant slab.h include (Brad Hards) 7141 7142Fix several bugs in thermal.c (Herbert Nachtnebel) 7143 7144Make CONFIG_ACPI_BOOT work properly (Pavel Machek) 7145 7146Change acpi_system_suspend to use updated irq functions (Pavel 7147Machek) 7148 7149Export acpi_get_firmware_table (Matthew Wilcox) 7150 7151Use proper root proc entry for ACPI (Kochi Takayoshi) 7152 7153Fix early-boot table parsing (Bjorn Helgaas) 7154 7155 71563) iASL Compiler/Disassembler 7157 7158Reworked the compiler options to make them more consistent and to 7159use two-letter options where appropriate. We were running out of 7160sensible letters. This may break some makefiles, so check the 7161current options list by invoking the compiler with no parameters. 7162 7163Completed the design and implementation of the ASL namepath 7164optimization option for the compiler. This option optimizes all 7165references to named objects to the shortest possible path. The 7166first attempt tries to utilize a single nameseg (4 characters) and 7167the "search-to-root" algorithm used by the interpreter. If that 7168cannot be used (because either the name is not in the search path 7169or there is a conflict with another object with the same name), 7170the pathname is optimized using the carat prefix (usually a 7171shorter string than specifying the entire path from the root.) 7172 7173Implemented support to obtain the DSDT from the Windows registry 7174(when the disassembly option is specified with no input file). 7175Added this code as the implementation for AcpiOsTableOverride in 7176the Windows OSL. Migrated the 16-bit code (used in the AcpiDump 7177utility) to scan memory for the DSDT to the AcpiOsTableOverride 7178function in the DOS OSL to make the disassembler truly OS 7179independent. 7180 7181Implemented a new option to disassemble and compile in one step. 7182When used without an input filename, this option will grab the 7183DSDT from the local machine, disassemble it, and compile it in one 7184step. 7185 7186Added a warning message for invalid escapes (a backslash followed 7187by any character other than the allowable escapes). This catches 7188the quoted string error "\_SB_" (which should be "\\_SB_" ). 7189 7190Also, there are numerous instances in the ACPI specification where 7191this error occurs. 7192 7193Added a compiler option to disable all optimizations. This is 7194basically the "compatibility mode" because by using this option, 7195the AML code will come out exactly the same as other ASL 7196compilers. 7197 7198Added error messages for incorrectly ordered dependent resource 7199functions. This includes: missing EndDependentFn macro at end of 7200dependent resource list, nested dependent function macros (both 7201start and end), and missing StartDependentFn macro. These are 7202common errors that should be caught at compile time. 7203 7204Implemented _OSI support for the disassembler and compiler. _OSI 7205must be included in the namespace for proper disassembly (because 7206the disassembler must know the number of arguments.) 7207 7208Added an "optimization" message type that is optional (off by 7209default). This message is used for all optimizations - including 7210constant folding, integer optimization, and namepath optimization. 7211 7212---------------------------------------- 721325 July 2002. Summary of changes for this release. 7214 7215 72161) ACPI CA Core Subsystem Version 20020725: 7217 7218The AML Disassembler has been enhanced to produce compilable ASL 7219code and has been integrated into the iASL compiler (see below) as 7220well as the single-step disassembly for the AML debugger and the 7221disassembler for the AcpiDump utility. All ACPI 2.0A opcodes, 7222resource templates and macros are fully supported. The 7223disassembler has been tested on over 30 different AML files, 7224producing identical AML when the resulting disassembled ASL file 7225is recompiled with the same ASL compiler. 7226 7227Modified the Resource Manager to allow zero interrupts and zero 7228dma channels during the GetCurrentResources call. This was 7229causing problems on some platforms. 7230 7231Added the AcpiOsRedirectOutput interface to the OSL to simplify 7232output redirection for the AcpiOsPrintf and AcpiOsVprintf 7233interfaces. 7234 7235Code and Data Size: Current core subsystem library sizes are shown 7236below. These are the code and data sizes for the acpica.lib 7237produced by the Microsoft Visual C++ 6.0 compiler, and these 7238values do not include any ACPI driver or OSPM code. The debug 7239version of the code includes the debug output trace mechanism and 7240has a larger code and data size. Note that these values will vary 7241depending on the efficiency of the compiler and the compiler 7242options used during generation. 7243 7244 Previous Release 7245 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 7246 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 7247 Current Release: 7248 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 7249 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 7250 7251 72522) Linux 7253 7254Fixed a panic in the EC driver (Dominik Brodowski) 7255 7256Implemented checksum of the R/XSDT itself during Linux table scan 7257(Richard Schaal) 7258 7259 72603) iASL compiler 7261 7262The AML disassembler is integrated into the compiler. The "-d" 7263option invokes the disassembler to completely disassemble an 7264input AML file, producing as output a text ASL file with the 7265extension ".dsl" (to avoid name collisions with existing .asl 7266source files.) A future enhancement will allow the disassembler 7267to obtain the BIOS DSDT from the registry under Windows. 7268 7269Fixed a problem with the VendorShort and VendorLong resource 7270descriptors where an invalid AML sequence was created. 7271 7272Implemented a fix for BufferData term in the ASL parser. It was 7273inadvertently defined twice, allowing invalid syntax to pass and 7274causing reduction conflicts. 7275 7276Fixed a problem where the Ones opcode could get converted to a 7277value of zero if "Ones" was used where a byte, word or dword value 7278was expected. The 64-bit value is now truncated to the correct 7279size with the correct value. 7280 7281 7282 7283---------------------------------------- 728402 July 2002. Summary of changes for this release. 7285 7286 72871) ACPI CA Core Subsystem Version 20020702: 7288 7289The Table Manager code has been restructured to add several new 7290features. Tables that are not required by the core subsystem 7291(other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer 7292validated in any way and are returned from AcpiGetFirmwareTable if 7293requested. The AcpiOsTableOverride interface is now called for 7294each table that is loaded by the subsystem in order to allow the 7295host to override any table it chooses. Previously, only the DSDT 7296could be overridden. Added one new files, tbrsdt.c and 7297tbgetall.c. 7298 7299Fixed a problem with the conversion of internal package objects to 7300external objects (when a package is returned from a control 7301method.) The return buffer length was set to zero instead of the 7302proper length of the package object. 7303 7304Fixed a reported problem with the use of the RefOf and DeRefOf 7305operators when passing reference arguments to control methods. A 7306new type of Reference object is used internally for references 7307produced by the RefOf operator. 7308 7309Added additional error messages in the Resource Manager to explain 7310AE_BAD_DATA errors when they occur during resource parsing. 7311 7312Split the AcpiEnableSubsystem into two primitives to enable a 7313finer granularity initialization sequence. These two calls should 7314be called in this order: AcpiEnableSubsystem (flags), 7315AcpiInitializeObjects (flags). The flags parameter remains the 7316same. 7317 7318 73192) Linux 7320 7321Updated the ACPI utilities module to understand the new style of 7322fully resolved package objects that are now returned from the core 7323subsystem. This eliminates errors of the form: 7324 7325 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT] 7326 acpi_utils-0430 [145] acpi_evaluate_reference: 7327 Invalid element in package (not a device reference) 7328 7329The method evaluation utility uses the new buffer allocation 7330scheme instead of calling AcpiEvaluate Object twice. 7331 7332Added support for ECDT. This allows the use of the Embedded 7333 7334Controller before the namespace has been fully initialized, which 7335is necessary for ACPI 2.0 support, and for some laptops to 7336initialize properly. (Laptops using ECDT are still rare, so only 7337limited testing was performed of the added functionality.) 7338 7339Fixed memory leaks in the EC driver. 7340 7341Eliminated a brittle code structure in acpi_bus_init(). 7342 7343Eliminated the acpi_evaluate() helper function in utils.c. It is 7344no longer needed since acpi_evaluate_object can optionally 7345allocate memory for the return object. 7346 7347Implemented fix for keyboard hang when getting battery readings on 7348some systems (Stephen White) 7349 7350PCI IRQ routing update (Dominik Brodowski) 7351 7352Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC 7353support 7354 7355---------------------------------------- 735611 June 2002. Summary of changes for this release. 7357 7358 73591) ACPI CA Core Subsystem Version 20020611: 7360 7361Fixed a reported problem where constants such as Zero and One 7362appearing within _PRT packages were not handled correctly within 7363the resource manager code. Originally reported against the ASL 7364compiler because the code generator now optimizes integers to 7365their minimal AML representation (i.e. AML constants if possible.) 7366The _PRT code now handles all AML constant opcodes correctly 7367(Zero, One, Ones, Revision). 7368 7369Fixed a problem with the Concatenate operator in the AML 7370interpreter where a buffer result object was incorrectly marked as 7371not fully evaluated, causing a run-time error of AE_AML_INTERNAL. 7372 7373All package sub-objects are now fully resolved before they are 7374returned from the external ACPI interfaces. This means that name 7375strings are resolved to object handles, and constant operators 7376(Zero, One, Ones, Revision) are resolved to Integers. 7377 7378Implemented immediate resolution of the AML Constant opcodes 7379(Zero, One, Ones, Revision) to Integer objects upon detection 7380within the AML stream. This has simplified and reduced the 7381generated code size of the subsystem by eliminating about 10 7382switch statements for these constants (which previously were 7383contained in Reference objects.) The complicating issues are that 7384the Zero opcode is used as a "placeholder" for unspecified 7385optional target operands and stores to constants are defined to be 7386no-ops. 7387 7388Code and Data Size: Current core subsystem library sizes are shown 7389below. These are the code and data sizes for the acpica.lib 7390produced by the Microsoft Visual C++ 6.0 compiler, and these 7391values do not include any ACPI driver or OSPM code. The debug 7392version of the code includes the debug output trace mechanism and 7393has a larger code and data size. Note that these values will vary 7394depending on the efficiency of the compiler and the compiler 7395options used during generation. 7396 7397 Previous Release 7398 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 7399 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 7400 Current Release: 7401 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 7402 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 7403 7404 74052) Linux 7406 7407 7408Added preliminary support for obtaining _TRA data for PCI root 7409bridges (Bjorn Helgaas). 7410 7411 74123) iASL Compiler Version X2046: 7413 7414Fixed a problem where the "_DDN" reserved name was defined to be a 7415control method with one argument. There are no arguments, and 7416_DDN does not have to be a control method. 7417 7418Fixed a problem with the Linux version of the compiler where the 7419source lines printed with error messages were the wrong lines. 7420This turned out to be the "LF versus CR/LF" difference between 7421Windows and Unix. This appears to be the longstanding issue 7422concerning listing output and error messages. 7423 7424Fixed a problem with the Linux version of compiler where opcode 7425names within error messages were wrong. This was caused by a 7426slight difference in the output of the Flex tool on Linux versus 7427Windows. 7428 7429Fixed a problem with the Linux compiler where the hex output files 7430contained some garbage data caused by an internal buffer overrun. 7431 7432 7433---------------------------------------- 743417 May 2002. Summary of changes for this release. 7435 7436 74371) ACPI CA Core Subsystem Version 20020517: 7438 7439Implemented a workaround to an BIOS bug discovered on the HP 7440OmniBook where the FADT revision number and the table size are 7441inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new 7442behavior is to fallback to using only the ACPI 1.0 fields of the 7443FADT if the table is too small to be a ACPI 2.0 table as claimed 7444by the revision number. Although this is a BIOS bug, this is a 7445case where the workaround is simple enough and with no side 7446effects, so it seemed prudent to add it. A warning message is 7447issued, however. 7448 7449Implemented minimum size checks for the fixed-length ACPI tables - 7450- the FADT and FACS, as well as consistency checks between the 7451revision number and the table size. 7452 7453Fixed a reported problem in the table override support where the 7454new table pointer was incorrectly treated as a physical address 7455instead of a logical address. 7456 7457Eliminated the use of the AE_AML_ERROR exception and replaced it 7458with more descriptive codes. 7459 7460Fixed a problem where an exception would occur if an ASL Field was 7461defined with no named Field Units underneath it (used by some 7462index fields). 7463 7464Code and Data Size: Current core subsystem library sizes are shown 7465below. These are the code and data sizes for the acpica.lib 7466produced by the Microsoft Visual C++ 6.0 compiler, and these 7467values do not include any ACPI driver or OSPM code. The debug 7468version of the code includes the debug output trace mechanism and 7469has a larger code and data size. Note that these values will vary 7470depending on the efficiency of the compiler and the compiler 7471options used during generation. 7472 7473 Previous Release 7474 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 7475 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 7476 Current Release: 7477 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 7478 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 7479 7480 7481 74822) Linux 7483 7484Much work done on ACPI init (MADT and PCI IRQ routing support). 7485(Paul D. and Dominik Brodowski) 7486 7487Fix PCI IRQ-related panic on boot (Sam Revitch) 7488 7489Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno) 7490 7491Fix "MHz" typo (Dominik Brodowski) 7492 7493Fix RTC year 2000 issue (Dominik Brodowski) 7494 7495Preclude multiple button proc entries (Eric Brunet) 7496 7497Moved arch-specific code out of include/platform/aclinux.h 7498 74993) iASL Compiler Version X2044: 7500 7501Implemented error checking for the string used in the EISAID macro 7502(Usually used in the definition of the _HID object.) The code now 7503strictly enforces the PnP format - exactly 7 characters, 3 7504uppercase letters and 4 hex digits. 7505 7506If a raw string is used in the definition of the _HID object 7507(instead of the EISAID macro), the string must contain all 7508alphanumeric characters (e.g., "*PNP0011" is not allowed because 7509of the asterisk.) 7510 7511Implemented checking for invalid use of ACPI reserved names for 7512most of the name creation operators (Name, Device, Event, Mutex, 7513OperationRegion, PowerResource, Processor, and ThermalZone.) 7514Previously, this check was only performed for control methods. 7515 7516Implemented an additional check on the Name operator to emit an 7517error if a reserved name that must be implemented in ASL as a 7518control method is used. We know that a reserved name must be a 7519method if it is defined with input arguments. 7520 7521The warning emitted when a namespace object reference is not found 7522during the cross reference phase has been changed into an error. 7523The "External" directive should be used for names defined in other 7524modules. 7525 7526 75274) Tools and Utilities 7528 7529The 16-bit tools (adump16 and aexec16) have been regenerated and 7530tested. 7531 7532Fixed a problem with the output of both acpidump and adump16 where 7533the indentation of closing parentheses and brackets was not 7534 7535aligned properly with the parent block. 7536 7537 7538---------------------------------------- 753903 May 2002. Summary of changes for this release. 7540 7541 75421) ACPI CA Core Subsystem Version 20020503: 7543 7544Added support a new OSL interface that allows the host operating 7545 7546system software to override the DSDT found in the firmware - 7547AcpiOsTableOverride. With this interface, the OSL can examine the 7548version of the firmware DSDT and replace it with a different one 7549if desired. 7550 7551Added new external interfaces for accessing ACPI registers from 7552device drivers and other system software - AcpiGetRegister and 7553AcpiSetRegister. This was simply an externalization of the 7554existing AcpiHwBitRegister interfaces. 7555 7556Fixed a regression introduced in the previous build where the 7557ASL/AML CreateField operator always returned an error, 7558"destination must be a NS Node". 7559 7560Extended the maximum time (before failure) to successfully enable 7561ACPI mode to 3 seconds. 7562 7563Code and Data Size: Current core subsystem library sizes are shown 7564below. These are the code and data sizes for the acpica.lib 7565produced by the Microsoft Visual C++ 6.0 compiler, and these 7566values do not include any ACPI driver or OSPM code. The debug 7567version of the code includes the debug output trace mechanism and 7568has a larger code and data size. Note that these values will vary 7569depending on the efficiency of the compiler and the compiler 7570options used during generation. 7571 7572 Previous Release 7573 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 7574 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 7575 Current Release: 7576 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 7577 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 7578 7579 75802) Linux 7581 7582Enhanced ACPI init code for SMP. We are now fully MPS and $PIR- 7583free. While 3 out of 4 of our in-house systems work fine, the last 7584one still hangs when testing the LAPIC timer. 7585 7586Renamed many files in 2.5 kernel release to omit "acpi_" from the 7587name. 7588 7589Added warning on boot for Presario 711FR. 7590 7591Sleep improvements (Pavel Machek) 7592 7593ACPI can now be built without CONFIG_PCI enabled. 7594 7595IA64: Fixed memory map functions (JI Lee) 7596 7597 75983) iASL Compiler Version X2043: 7599 7600Added support to allow the compiler to be integrated into the MS 7601VC++ development environment for one-button compilation of single 7602files or entire projects -- with error-to-source-line mapping. 7603 7604Implemented support for compile-time constant folding for the 7605Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0 7606specification. This allows the ASL writer to use expressions 7607instead of Integer/Buffer/String constants in terms that must 7608evaluate to constants at compile time and will also simplify the 7609emitted AML in any such sub-expressions that can be folded 7610(evaluated at compile-time.) This increases the size of the 7611compiler significantly because a portion of the ACPI CA AML 7612interpreter is included within the compiler in order to pre- 7613evaluate constant expressions. 7614 7615 7616Fixed a problem with the "Unicode" ASL macro that caused the 7617compiler to fault. (This macro is used in conjunction with the 7618_STR reserved name.) 7619 7620Implemented an AML opcode optimization to use the Zero, One, and 7621Ones opcodes where possible to further reduce the size of integer 7622constants and thus reduce the overall size of the generated AML 7623code. 7624 7625Implemented error checking for new reserved terms for ACPI version 76262.0A. 7627 7628Implemented the -qr option to display the current list of ACPI 7629reserved names known to the compiler. 7630 7631Implemented the -qc option to display the current list of ASL 7632operators that are allowed within constant expressions and can 7633therefore be folded at compile time if the operands are constants. 7634 7635 76364) Documentation 7637 7638Updated the Programmer's Reference for new interfaces, data types, 7639and memory allocation model options. 7640 7641Updated the iASL Compiler User Reference to apply new format and 7642add information about new features and options. 7643 7644---------------------------------------- 764519 April 2002. Summary of changes for this release. 7646 76471) ACPI CA Core Subsystem Version 20020419: 7648 7649The source code base for the Core Subsystem has been completely 7650cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit 7651versions. The Lint option files used are included in the 7652/acpi/generate/lint directory. 7653 7654Implemented enhanced status/error checking across the entire 7655Hardware manager subsystem. Any hardware errors (reported from 7656the OSL) are now bubbled up and will abort a running control 7657method. 7658 7659 7660Fixed a problem where the per-ACPI-table integer width (32 or 64) 7661was stored only with control method nodes, causing a fault when 7662non-control method code was executed during table loading. The 7663solution implemented uses a global variable to indicate table 7664width across the entire ACPI subsystem. Therefore, ACPI CA does 7665not support mixed integer widths across different ACPI tables 7666(DSDT, SSDT). 7667 7668Fixed a problem where NULL extended fields (X fields) in an ACPI 76692.0 ACPI FADT caused the table load to fail. Although the 7670existing ACPI specification is a bit fuzzy on this topic, the new 7671behavior is to fall back on a ACPI 1.0 field if the corresponding 7672ACPI 2.0 X field is zero (even though the table revision indicates 7673a full ACPI 2.0 table.) The ACPI specification will be updated to 7674clarify this issue. 7675 7676Fixed a problem with the SystemMemory operation region handler 7677where memory was always accessed byte-wise even if the AML- 7678specified access width was larger than a byte. This caused 7679problems on systems with memory-mapped I/O. Memory is now 7680accessed with the width specified. On systems that do not support 7681non-aligned transfers, a check is made to guarantee proper address 7682alignment before proceeding in order to avoid an AML-caused 7683alignment fault within the kernel. 7684 7685 7686Fixed a problem with the ExtendedIrq resource where only one byte 7687of the 4-byte Irq field was extracted. 7688 7689Fixed the AcpiExDigitsNeeded() procedure to support _UID. This 7690function was out of date and required a rewrite. 7691 7692Code and Data Size: Current core subsystem library sizes are shown 7693below. These are the code and data sizes for the acpica.lib 7694produced by the Microsoft Visual C++ 6.0 compiler, and these 7695values do not include any ACPI driver or OSPM code. The debug 7696version of the code includes the debug output trace mechanism and 7697has a larger code and data size. Note that these values will vary 7698depending on the efficiency of the compiler and the compiler 7699options used during generation. 7700 7701 Previous Release 7702 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 7703 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 7704 Current Release: 7705 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 7706 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 7707 7708 77092) Linux 7710 7711PCI IRQ routing fixes (Dominik Brodowski) 7712 7713 77143) iASL Compiler Version X2042: 7715 7716Implemented an additional compile-time error check for a field 7717unit whose size + minimum access width would cause a run-time 7718access beyond the end-of-region. Previously, only the field size 7719itself was checked. 7720 7721The Core subsystem and iASL compiler now share a common parse 7722object in preparation for compile-time evaluation of the type 77233/4/5 ASL operators. 7724 7725 7726---------------------------------------- 7727Summary of changes for this release: 03_29_02 7728 77291) ACPI CA Core Subsystem Version 20020329: 7730 7731Implemented support for late evaluation of TermArg operands to 7732Buffer and Package objects. This allows complex expressions to be 7733used in the declarations of these object types. 7734 7735Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI 77361.0, if the field was larger than 32 bits, it was returned as a 7737buffer - otherwise it was returned as an integer. In ACPI 2.0, 7738the field is returned as a buffer only if the field is larger than 773964 bits. The TableRevision is now considered when making this 7740conversion to avoid incompatibility with existing ASL code. 7741 7742Implemented logical addressing for AcpiOsGetRootPointer. This 7743allows an RSDP with either a logical or physical address. With 7744this support, the host OS can now override all ACPI tables with 7745one logical RSDP. Includes implementation of "typed" pointer 7746support to allow a common data type for both physical and logical 7747pointers internally. This required a change to the 7748AcpiOsGetRootPointer interface. 7749 7750Implemented the use of ACPI 2.0 Generic Address Structures for all 7751GPE, Fixed Event, and PM Timer I/O. This allows the use of memory 7752mapped I/O for these ACPI features. 7753 7754Initialization now ignores not only non-required tables (All 7755tables other than the FADT, FACS, DSDT, and SSDTs), but also does 7756not validate the table headers of unrecognized tables. 7757 7758Fixed a problem where a notify handler could only be 7759installed/removed on an object of type Device. All "notify" 7760 7761objects are now supported -- Devices, Processor, Power, and 7762Thermal. 7763 7764Removed most verbosity from the ACPI_DB_INFO debug level. Only 7765critical information is returned when this debug level is enabled. 7766 7767Code and Data Size: Current core subsystem library sizes are shown 7768below. These are the code and data sizes for the acpica.lib 7769produced by the Microsoft Visual C++ 6.0 compiler, and these 7770values do not include any ACPI driver or OSPM code. The debug 7771version of the code includes the debug output trace mechanism and 7772has a larger code and data size. Note that these values will vary 7773depending on the efficiency of the compiler and the compiler 7774options used during generation. 7775 7776 Previous Release 7777 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 7778 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 7779 Current Release: 7780 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 7781 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 7782 7783 77842) Linux: 7785 7786The processor driver (acpi_processor.c) now fully supports ACPI 77872.0-based processor performance control (e.g. Intel(R) 7788SpeedStep(TM) technology) Note that older laptops that only have 7789the Intel "applet" interface are not supported through this. The 7790'limit' and 'performance' interface (/proc) are fully functional. 7791[Note that basic policy for controlling performance state 7792transitions will be included in the next version of ospmd.] The 7793idle handler was modified to more aggressively use C2, and PIIX4 7794errata handling underwent a complete overhaul (big thanks to 7795Dominik Brodowski). 7796 7797Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR- 7798based devices in the ACPI namespace are now dynamically bound 7799(associated) with their PCI counterparts (e.g. PCI1->01:00.0). 7800This allows, among other things, ACPI to resolve bus numbers for 7801subordinate PCI bridges. 7802 7803Enhanced PCI IRQ routing to get the proper bus number for _PRT 7804entries defined underneath PCI bridges. 7805 7806Added IBM 600E to bad bios list due to invalid _ADR value for 7807PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing. 7808 7809In the process of adding full MADT support (e.g. IOAPIC) for IA32 7810(acpi.c, mpparse.c) -- stay tuned. 7811 7812Added back visual differentiation between fixed-feature and 7813control-method buttons in dmesg. Buttons are also subtyped (e.g. 7814button/power/PWRF) to simplify button identification. 7815 7816We no longer use -Wno-unused when compiling debug. Please ignore 7817any "_THIS_MODULE defined but not used" messages. 7818 7819Can now shut down the system using "magic sysrq" key. 7820 7821 78223) iASL Compiler version 2041: 7823 7824Fixed a problem where conversion errors for hex/octal/decimal 7825constants were not reported. 7826 7827Implemented a fix for the General Register template Address field. 7828This field was 8 bits when it should be 64. 7829 7830Fixed a problem where errors/warnings were no longer being emitted 7831within the listing output file. 7832 7833Implemented the ACPI 2.0A restriction on ACPI Table Signatures to 7834exactly 4 characters, alphanumeric only. 7835 7836 7837 7838 7839---------------------------------------- 7840Summary of changes for this release: 03_08_02 7841 7842 78431) ACPI CA Core Subsystem Version 20020308: 7844 7845Fixed a problem with AML Fields where the use of the "AccessAny" 7846keyword could cause an interpreter error due to attempting to read 7847or write beyond the end of the parent Operation Region. 7848 7849Fixed a problem in the SystemMemory Operation Region handler where 7850an attempt was made to map memory beyond the end of the region. 7851This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY" 7852errors on some Linux systems. 7853 7854Fixed a problem where the interpreter/namespace "search to root" 7855algorithm was not functioning for some object types. Relaxed the 7856internal restriction on the search to allow upsearches for all 7857external object types as well as most internal types. 7858 7859 78602) Linux: 7861 7862We now use safe_halt() macro versus individual calls to sti | hlt. 7863 7864Writing to the processor limit interface should now work. "echo 1" 7865will increase the limit, 2 will decrease, and 0 will reset to the 7866 7867default. 7868 7869 78703) ASL compiler: 7871 7872Fixed segfault on Linux version. 7873 7874 7875---------------------------------------- 7876Summary of changes for this release: 02_25_02 7877 78781) ACPI CA Core Subsystem: 7879 7880 7881Fixed a problem where the GPE bit masks were not initialized 7882properly, causing erratic GPE behavior. 7883 7884Implemented limited support for multiple calling conventions. The 7885code can be generated with either the VPL (variable parameter 7886list, or "C") convention, or the FPL (fixed parameter list, or 7887"Pascal") convention. The core subsystem is about 3.4% smaller 7888when generated with FPL. 7889 7890 78912) Linux 7892 7893Re-add some /proc/acpi/event functionality that was lost during 7894the rewrite 7895 7896Resolved issue with /proc events for fixed-feature buttons showing 7897up as the system device. 7898 7899Fixed checks on C2/C3 latencies to be inclusive of maximum values. 7900 7901Replaced AE_ERRORs in acpi_osl.c with more specific error codes. 7902 7903Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi" 7904 7905Fixed limit interface & usage to fix bugs with passive cooling 7906hysterisis. 7907 7908Restructured PRT support. 7909 7910 7911---------------------------------------- 7912Summary of changes for this label: 02_14_02 7913 7914 79151) ACPI CA Core Subsystem: 7916 7917Implemented support in AcpiLoadTable to allow loading of FACS and 7918FADT tables. 7919 7920Suport for the now-obsolete interim 0.71 64-bit ACPI tables has 7921been removed. All 64-bit platforms should be migrated to the ACPI 79222.0 tables. The actbl71.h header has been removed from the source 7923tree. 7924 7925All C macros defined within the subsystem have been prefixed with 7926"ACPI_" to avoid collision with other system include files. 7927 7928Removed the return value for the two AcpiOsPrint interfaces, since 7929it is never used and causes lint warnings for ignoring the return 7930value. 7931 7932Added error checking to all internal mutex acquire and release 7933calls. Although a failure from one of these interfaces is 7934probably a fatal system error, these checks will cause the 7935immediate abort of the currently executing method or interface. 7936 7937Fixed a problem where the AcpiSetCurrentResources interface could 7938fault. This was a side effect of the deployment of the new memory 7939allocation model. 7940 7941Fixed a couple of problems with the Global Lock support introduced 7942in the last major build. The "common" (1.0/2.0) internal FACS was 7943being overwritten with the FACS signature and clobbering the 7944Global Lock pointer. Also, the actual firmware FACS was being 7945unmapped after construction of the "common" FACS, preventing 7946access to the actual Global Lock field within it. The "common" 7947internal FACS is no longer installed as an actual ACPI table; it 7948is used simply as a global. 7949 7950Code and Data Size: Current core subsystem library sizes are shown 7951below. These are the code and data sizes for the acpica.lib 7952produced by the Microsoft Visual C++ 6.0 compiler, and these 7953values do not include any ACPI driver or OSPM code. The debug 7954version of the code includes the debug output trace mechanism and 7955has a larger code and data size. Note that these values will vary 7956depending on the efficiency of the compiler and the compiler 7957options used during generation. 7958 7959 Previous Release (02_07_01) 7960 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 7961 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 7962 Current Release: 7963 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 7964 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 7965 7966 79672) Linux 7968 7969Updated Linux-specific code for core macro and OSL interface 7970changes described above. 7971 7972Improved /proc/acpi/event. It now can be opened only once and has 7973proper poll functionality. 7974 7975Fixed and restructured power management (acpi_bus). 7976 7977Only create /proc "view by type" when devices of that class exist. 7978 7979Fixed "charging/discharging" bug (and others) in acpi_battery. 7980 7981Improved thermal zone code. 7982 7983 79843) ASL Compiler, version X2039: 7985 7986 7987Implemented the new compiler restriction on ASL String hex/octal 7988escapes to non-null, ASCII values. An error results if an invalid 7989value is used. (This will require an ACPI 2.0 specification 7990change.) 7991 7992AML object labels that are output to the optional C and ASM source 7993are now prefixed with both the ACPI table signature and table ID 7994to help guarantee uniqueness within a large BIOS project. 7995 7996 7997---------------------------------------- 7998Summary of changes for this label: 02_01_02 7999 80001) ACPI CA Core Subsystem: 8001 8002ACPI 2.0 support is complete in the entire Core Subsystem and the 8003ASL compiler. All new ACPI 2.0 operators are implemented and all 8004other changes for ACPI 2.0 support are complete. With 8005simultaneous code and data optimizations throughout the subsystem, 8006ACPI 2.0 support has been implemented with almost no additional 8007cost in terms of code and data size. 8008 8009Implemented a new mechanism for allocation of return buffers. If 8010the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will 8011be allocated on behalf of the caller. Consolidated all return 8012buffer validation and allocation to a common procedure. Return 8013buffers will be allocated via the primary OSL allocation interface 8014since it appears that a separate pool is not needed by most users. 8015If a separate pool is required for these buffers, the caller can 8016still use the original mechanism and pre-allocate the buffer(s). 8017 8018Implemented support for string operands within the DerefOf 8019operator. 8020 8021Restructured the Hardware and Event managers to be table driven, 8022simplifying the source code and reducing the amount of generated 8023code. 8024 8025Split the common read/write low-level ACPI register bitfield 8026procedure into a separate read and write, simplifying the code 8027considerably. 8028 8029Obsoleted the AcpiOsCallocate OSL interface. This interface was 8030used only a handful of times and didn't have enough critical mass 8031for a separate interface. Replaced with a common calloc procedure 8032in the core. 8033 8034Fixed a reported problem with the GPE number mapping mechanism 8035that allows GPE1 numbers to be non-contiguous with GPE0. 8036Reorganized the GPE information and shrunk a large array that was 8037originally large enough to hold info for all possible GPEs (256) 8038to simply large enough to hold all GPEs up to the largest GPE 8039number on the machine. 8040 8041Fixed a reported problem with resource structure alignment on 64- 8042bit platforms. 8043 8044Changed the AcpiEnableEvent and AcpiDisableEvent external 8045interfaces to not require any flags for the common case of 8046enabling/disabling a GPE. 8047 8048Implemented support to allow a "Notify" on a Processor object. 8049 8050Most TBDs in comments within the source code have been resolved 8051and eliminated. 8052 8053 8054Fixed a problem in the interpreter where a standalone parent 8055prefix (^) was not handled correctly in the interpreter and 8056debugger. 8057 8058Removed obsolete and unnecessary GPE save/restore code. 8059 8060Implemented Field support in the ASL Load operator. This allows a 8061table to be loaded from a named field, in addition to loading a 8062table directly from an Operation Region. 8063 8064Implemented timeout and handle support in the external Global Lock 8065interfaces. 8066 8067Fixed a problem in the AcpiDump utility where pathnames were no 8068longer being generated correctly during the dump of named objects. 8069 8070Modified the AML debugger to give a full display of if/while 8071predicates instead of just one AML opcode at a time. (The 8072predicate can have several nested ASL statements.) The old method 8073was confusing during single stepping. 8074 8075Code and Data Size: Current core subsystem library sizes are shown 8076below. These are the code and data sizes for the acpica.lib 8077produced by the Microsoft Visual C++ 6.0 compiler, and these 8078values do not include any ACPI driver or OSPM code. The debug 8079version of the code includes the debug output trace mechanism and 8080has a larger code and data size. Note that these values will vary 8081depending on the efficiency of the compiler and the compiler 8082options used during generation. 8083 8084 Previous Release (12_18_01) 8085 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 8086 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 8087 Current Release: 8088 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 8089 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 8090 80912) Linux 8092 8093 Implemented fix for PIIX reverse throttling errata (Processor 8094driver) 8095 8096Added new Limit interface (Processor and Thermal drivers) 8097 8098New thermal policy (Thermal driver) 8099 8100Many updates to /proc 8101 8102Battery "low" event support (Battery driver) 8103 8104Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers) 8105 8106IA32 - IA64 initialization unification, no longer experimental 8107 8108Menuconfig options redesigned 8109 81103) ASL Compiler, version X2037: 8111 8112Implemented several new output features to simplify integration of 8113AML code into firmware: 1) Output the AML in C source code with 8114labels for each named ASL object. The original ASL source code 8115is interleaved as C comments. 2) Output the AML in ASM source code 8116with labels and interleaved ASL source. 3) Output the AML in 8117raw hex table form, in either C or ASM. 8118 8119Implemented support for optional string parameters to the 8120LoadTable operator. 8121 8122Completed support for embedded escape sequences within string 8123literals. The compiler now supports all single character escapes 8124as well as the Octal and Hex escapes. Note: the insertion of a 8125null byte into a string literal (via the hex/octal escape) causes 8126the string to be immediately terminated. A warning is issued. 8127 8128Fixed a problem where incorrect AML was generated for the case 8129where an ASL namepath consists of a single parent prefix ( 8130 8131) with no trailing name segments. 8132 8133The compiler has been successfully generated with a 64-bit C 8134compiler. 8135 8136 8137 8138 8139---------------------------------------- 8140Summary of changes for this label: 12_18_01 8141 81421) Linux 8143 8144Enhanced blacklist with reason and severity fields. Any table's 8145signature may now be used to identify a blacklisted system. 8146 8147Call _PIC control method to inform the firmware which interrupt 8148model the OS is using. Turn on any disabled link devices. 8149 8150Cleaned up busmgr /proc error handling (Andreas Dilger) 8151 8152 2) ACPI CA Core Subsystem: 8153 8154Implemented ACPI 2.0 semantics for the "Break" operator (Exit from 8155while loop) 8156 8157Completed implementation of the ACPI 2.0 "Continue", 8158"ConcatenateResTemplate", "DataTableRegion", and "LoadTable" 8159operators. All new ACPI 2.0 operators are now implemented in both 8160the ASL compiler and the AML interpreter. The only remaining ACPI 81612.0 task is support for the String data type in the DerefOf 8162operator. Fixed a problem with AcquireMutex where the status code 8163was lost if the caller had to actually wait for the mutex. 8164 8165Increased the maximum ASL Field size from 64K bits to 4G bits. 8166 8167Completed implementation of the external Global Lock interfaces -- 8168AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and 8169Handler parameters were added. 8170 8171Completed another pass at removing warnings and issues when 8172compiling with 64-bit compilers. The code now compiles cleanly 8173with the Intel 64-bit C/C++ compiler. Most notably, the pointer 8174add and subtract (diff) macros have changed considerably. 8175 8176 8177Created and deployed a new ACPI_SIZE type that is 64-bits wide on 817864-bit platforms, 32-bits on all others. This type is used 8179wherever memory allocation and/or the C sizeof() operator is used, 8180and affects the OSL memory allocation interfaces AcpiOsAllocate 8181and AcpiOsCallocate. 8182 8183Implemented sticky user breakpoints in the AML debugger. 8184 8185Code and Data Size: Current core subsystem library sizes are shown 8186below. These are the code and data sizes for the acpica.lib 8187produced by the Microsoft Visual C++ 6.0 compiler, and these 8188values do not include any ACPI driver or OSPM code. The debug 8189version of the code includes the debug output trace mechanism and 8190has a larger code and data size. Note that these values will vary 8191depending on the efficiency of the compiler and the compiler 8192options used during generation. 8193 8194 Previous Release (12_05_01) 8195 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 8196 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 8197 Current Release: 8198 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 8199 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 8200 8201 3) ASL Compiler, version X2034: 8202 8203Now checks for (and generates an error if detected) the use of a 8204Break or Continue statement without an enclosing While statement. 8205 8206 8207Successfully generated the compiler with the Intel 64-bit C 8208compiler. 8209 8210 ---------------------------------------- 8211Summary of changes for this label: 12_05_01 8212 8213 1) ACPI CA Core Subsystem: 8214 8215The ACPI 2.0 CopyObject operator is fully implemented. This 8216operator creates a new copy of an object (and is also used to 8217bypass the "implicit conversion" mechanism of the Store operator.) 8218 8219The ACPI 2.0 semantics for the SizeOf operator are fully 8220implemented. The change is that performing a SizeOf on a 8221reference object causes an automatic dereference of the object to 8222tha actual value before the size is evaluated. This behavior was 8223undefined in ACPI 1.0. 8224 8225The ACPI 2.0 semantics for the Extended IRQ resource descriptor 8226have been implemented. The interrupt polarity and mode are now 8227independently set. 8228 8229Fixed a problem where ASL Constants (Zero, One, Ones, Revision) 8230appearing in Package objects were not properly converted to 8231integers when the internal Package was converted to an external 8232object (via the AcpiEvaluateObject interface.) 8233 8234Fixed a problem with the namespace object deletion mechanism for 8235objects created by control methods. There were two parts to this 8236problem: 1) Objects created during the initialization phase method 8237parse were not being deleted, and 2) The object owner ID mechanism 8238to track objects was broken. 8239 8240Fixed a problem where the use of the ASL Scope operator within a 8241control method would result in an invalid opcode exception. 8242 8243Fixed a problem introduced in the previous label where the buffer 8244length required for the _PRT structure was not being returned 8245correctly. 8246 8247Code and Data Size: Current core subsystem library sizes are shown 8248below. These are the code and data sizes for the acpica.lib 8249produced by the Microsoft Visual C++ 6.0 compiler, and these 8250values do not include any ACPI driver or OSPM code. The debug 8251version of the code includes the debug output trace mechanism and 8252has a larger code and data size. Note that these values will vary 8253depending on the efficiency of the compiler and the compiler 8254options used during generation. 8255 8256 Previous Release (11_20_01) 8257 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 8258 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 8259 8260 Current Release: 8261 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 8262 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 8263 8264 2) Linux: 8265 8266Updated all files to apply cleanly against 2.4.16. 8267 8268Added basic PCI Interrupt Routing Table (PRT) support for IA32 8269(acpi_pci.c), and unified the PRT code for IA32 and IA64. This 8270version supports both static and dyanmic PRT entries, but dynamic 8271entries are treated as if they were static (not yet 8272reconfigurable). Architecture- specific code to use this data is 8273absent on IA32 but should be available shortly. 8274 8275Changed the initialization sequence to start the ACPI interpreter 8276(acpi_init) prior to initialization of the PCI driver (pci_init) 8277in init/main.c. This ordering is required to support PRT and 8278facilitate other (future) enhancement. A side effect is that the 8279ACPI bus driver and certain device drivers can no longer be loaded 8280as modules. 8281 8282Modified the 'make menuconfig' options to allow PCI Interrupt 8283Routing support to be included without the ACPI Bus and other 8284device drivers. 8285 8286 3) ASL Compiler, version X2033: 8287 8288Fixed some issues with the use of the new CopyObject and 8289DataTableRegion operators. Both are fully functional. 8290 8291 ---------------------------------------- 8292Summary of changes for this label: 11_20_01 8293 8294 20 November 2001. Summary of changes for this release. 8295 8296 1) ACPI CA Core Subsystem: 8297 8298Updated Index support to match ACPI 2.0 semantics. Storing a 8299Integer, String, or Buffer to an Index of a Buffer will store only 8300the least-significant byte of the source to the Indexed buffer 8301byte. Multiple writes are not performed. 8302 8303Fixed a problem where the access type used in an AccessAs ASL 8304operator was not recorded correctly into the field object. 8305 8306Fixed a problem where ASL Event objects were created in a 8307signalled state. Events are now created in an unsignalled state. 8308 8309The internal object cache is now purged after table loading and 8310initialization to reduce the use of dynamic kernel memory -- on 8311the assumption that object use is greatest during the parse phase 8312of the entire table (versus the run-time use of individual control 8313methods.) 8314 8315ACPI 2.0 variable-length packages are now fully operational. 8316 8317Code and Data Size: Code and Data optimizations have permitted new 8318feature development with an actual reduction in the library size. 8319Current core subsystem library sizes are shown below. These are 8320the code and data sizes for the acpica.lib produced by the 8321Microsoft Visual C++ 6.0 compiler, and these values do not include 8322any ACPI driver or OSPM code. The debug version of the code 8323includes the debug output trace mechanism and has a larger code 8324and data size. Note that these values will vary depending on the 8325efficiency of the compiler and the compiler options used during 8326generation. 8327 8328 Previous Release (11_09_01): 8329 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 8330 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 8331 8332 Current Release: 8333 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 8334 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 8335 8336 2) Linux: 8337 8338Enhanced the ACPI boot-time initialization code to allow the use 8339of Local APIC tables for processor enumeration on IA-32, and to 8340pave the way for a fully MPS-free boot (on SMP systems) in the 8341near future. This functionality replaces 8342arch/i386/kernel/acpitables.c, which was introduced in an earlier 83432.4.15-preX release. To enable this feature you must add 8344"acpi_boot=on" to the kernel command line -- see the help entry 8345for CONFIG_ACPI_BOOT for more information. An IA-64 release is in 8346the works... 8347 8348Restructured the configuration options to allow boot-time table 8349parsing support without inclusion of the ACPI Interpreter (and 8350other) code. 8351 8352NOTE: This release does not include fixes for the reported events, 8353power-down, and thermal passive cooling issues (coming soon). 8354 8355 3) ASL Compiler: 8356 8357Added additional typechecking for Fields within restricted access 8358Operation Regions. All fields within EC and CMOS regions must be 8359declared with ByteAcc. All fields withing SMBus regions must be 8360declared with the BufferAcc access type. 8361 8362Fixed a problem where the listing file output of control methods 8363no longer interleaved the actual AML code with the ASL source 8364code. 8365 8366 8367 8368 8369---------------------------------------- 8370Summary of changes for this label: 11_09_01 8371 83721) ACPI CA Core Subsystem: 8373 8374Implemented ACPI 2.0-defined support for writes to fields with a 8375Buffer, String, or Integer source operand that is smaller than the 8376target field. In these cases, the source operand is zero-extended 8377to fill the target field. 8378 8379Fixed a problem where a Field starting bit offset (within the 8380parent operation region) was calculated incorrectly if the 8381 8382alignment of the field differed from the access width. This 8383affected CreateWordField, CreateDwordField, CreateQwordField, and 8384possibly other fields that use the "AccessAny" keyword. 8385 8386Fixed a problem introduced in the 11_02_01 release where indirect 8387stores through method arguments did not operate correctly. 8388 83892) Linux: 8390 8391Implemented boot-time ACPI table parsing support 8392(CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code 8393facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than 8394legacy BIOS interfaces (e.g. MPS) for the configuration of system 8395processors, memory, and interrupts during setup_arch(). Note that 8396this patch does not include the required architecture-specific 8397changes required to apply this information -- subsequent patches 8398will be posted for both IA32 and IA64 to achieve this. 8399 8400Added low-level sleep support for IA32 platforms, courtesy of Pat 8401Mochel. This allows IA32 systems to transition to/from various 8402sleeping states (e.g. S1, S3), although the lack of a centralized 8403driver model and power-manageable drivers will prevent its 8404(successful) use on most systems. 8405 8406Revamped the ACPI 'menuconfig' layout: created new "ACPI Support" 8407submenu, unified IA32 and IA64 options, added new "Boot using ACPI 8408tables" option, etc. 8409 8410Increased the default timeout for the EC driver from 1ms to 10ms 8411(1000 cycles of 10us) to try to address AE_TIME errors during EC 8412transactions. 8413 8414 ---------------------------------------- 8415Summary of changes for this label: 11_02_01 8416 84171) ACPI CA Core Subsystem: 8418 8419ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access 8420(QWordAcc keyword). All ACPI 2.0 64-bit support is now 8421implemented. 8422 8423OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required 8424changes to support ACPI 2.0 Qword field access. Read/Write 8425PciConfiguration(), Read/Write Memory(), and Read/Write Port() now 8426accept an ACPI_INTEGER (64 bits) as the value parameter. Also, 8427the value parameter for the address space handler interface is now 8428an ACPI_INTEGER. OSL implementations of these interfaces must now 8429handle the case where the Width parameter is 64. 8430 8431Index Fields: Fixed a problem where unaligned bit assembly and 8432disassembly for IndexFields was not supported correctly. 8433 8434Index and Bank Fields: Nested Index and Bank Fields are now 8435supported. During field access, a check is performed to ensure 8436that the value written to an Index or Bank register is not out of 8437the range of the register. The Index (or Bank) register is 8438written before each access to the field data. Future support will 8439include allowing individual IndexFields to be wider than the 8440DataRegister width. 8441 8442Fields: Fixed a problem where the AML interpreter was incorrectly 8443attempting to write beyond the end of a Field/OpRegion. This was 8444a boundary case that occurred when a DWORD field was written to a 8445BYTE access OpRegion, forcing multiple writes and causing the 8446interpreter to write one datum too many. 8447 8448Fields: Fixed a problem with Field/OpRegion access where the 8449starting bit address of a field was incorrectly calculated if the 8450current access type was wider than a byte (WordAcc, DwordAcc, or 8451QwordAcc). 8452 8453Fields: Fixed a problem where forward references to individual 8454FieldUnits (individual Field names within a Field definition) were 8455not resolved during the AML table load. 8456 8457Fields: Fixed a problem where forward references from a Field 8458definition to the parent Operation Region definition were not 8459resolved during the AML table load. 8460 8461Fields: Duplicate FieldUnit names within a scope are now detected 8462during AML table load. 8463 8464Acpi Interfaces: Fixed a problem where the AcpiGetName() interface 8465returned an incorrect name for the root node. 8466 8467Code and Data Size: Code and Data optimizations have permitted new 8468feature development with an actual reduction in the library size. 8469Current core subsystem library sizes are shown below. These are 8470the code and data sizes for the acpica.lib produced by the 8471Microsoft Visual C++ 6.0 compiler, and these values do not include 8472any ACPI driver or OSPM code. The debug version of the code 8473includes the debug output trace mechanism and has a larger code 8474and data size. Note that these values will vary depending on the 8475efficiency of the compiler and the compiler options used during 8476generation. 8477 8478 Previous Release (10_18_01): 8479 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 8480 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 8481 8482 Current Release: 8483 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 8484 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 8485 8486 2) Linux: 8487 8488Improved /proc processor output (Pavel Machek) Re-added 8489MODULE_LICENSE("GPL") to all modules. 8490 8491 3) ASL Compiler version X2030: 8492 8493Duplicate FieldUnit names within a scope are now detected and 8494flagged as errors. 8495 8496 4) Documentation: 8497 8498Programmer Reference updated to reflect OSL and address space 8499handler interface changes described above. 8500 8501---------------------------------------- 8502Summary of changes for this label: 10_18_01 8503 8504ACPI CA Core Subsystem: 8505 8506Fixed a problem with the internal object reference count mechanism 8507that occasionally caused premature object deletion. This resolves 8508all of the outstanding problem reports where an object is deleted 8509in the middle of an interpreter evaluation. Although this problem 8510only showed up in rather obscure cases, the solution to the 8511problem involved an adjustment of all reference counts involving 8512objects attached to namespace nodes. 8513 8514Fixed a problem with Field support in the interpreter where 8515writing to an aligned field whose length is an exact multiple (2 8516or greater) of the field access granularity would cause an attempt 8517to write beyond the end of the field. 8518 8519The top level AML opcode execution functions within the 8520interpreter have been renamed with a more meaningful and 8521consistent naming convention. The modules exmonad.c and 8522exdyadic.c were eliminated. New modules are exoparg1.c, 8523exoparg2.c, exoparg3.c, and exoparg6.c. 8524 8525Support for the ACPI 2.0 "Mid" ASL operator has been implemented. 8526 8527Fixed a problem where the AML debugger was causing some internal 8528objects to not be deleted during subsystem termination. 8529 8530Fixed a problem with the external AcpiEvaluateObject interface 8531where the subsystem would fault if the named object to be 8532evaluated refered to a constant such as Zero, Ones, etc. 8533 8534Fixed a problem with IndexFields and BankFields where the 8535subsystem would fault if the index, data, or bank registers were 8536not defined in the same scope as the field itself. 8537 8538Added printf format string checking for compilers that support 8539this feature. Corrected more than 50 instances of issues with 8540format specifiers within invocations of ACPI_DEBUG_PRINT 8541throughout the core subsystem code. 8542 8543The ASL "Revision" operator now returns the ACPI support level 8544implemented in the core - the value "2" since the ACPI 2.0 support 8545is more than 50% implemented. 8546 8547Enhanced the output of the AML debugger "dump namespace" command 8548to output in a more human-readable form. 8549 8550Current core subsystem library code sizes are shown below. These 8551 8552are the code and data sizes for the acpica.lib produced by the 8553Microsoft Visual C++ 6.0 compiler, and these values do not include 8554any ACPI driver or OSPM code. The debug version of the code 8555includes the full debug trace mechanism -- leading to a much 8556 8557larger code and data size. Note that these values will vary 8558depending on the efficiency of the compiler and the compiler 8559options used during generation. 8560 8561 Previous Label (09_20_01): 8562 Non-Debug Version: 65K Code, 5K Data, 70K Total 8563 Debug Version: 138K Code, 58K Data, 196K Total 8564 8565 This Label: 8566 8567 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 8568 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 8569 8570Linux: 8571 8572Implemented a "Bad BIOS Blacklist" to track machines that have 8573known ASL/AML problems. 8574 8575Enhanced the /proc interface for the thermal zone driver and added 8576support for _HOT (the critical suspend trip point). The 'info' 8577file now includes threshold/policy information, and allows setting 8578of _SCP (cooling preference) and _TZP (polling frequency) values 8579to the 'info' file. Examples: "echo tzp=5 > info" sets the polling 8580frequency to 5 seconds, and "echo scp=1 > info" sets the cooling 8581preference to the passive/quiet mode (if supported by the ASL). 8582 8583Implemented a workaround for a gcc bug that resuted in an OOPs 8584when loading the control method battery driver. 8585 8586 ---------------------------------------- 8587Summary of changes for this label: 09_20_01 8588 8589 ACPI CA Core Subsystem: 8590 8591The AcpiEnableEvent and AcpiDisableEvent interfaces have been 8592modified to allow individual GPE levels to be flagged as wake- 8593enabled (i.e., these GPEs are to remain enabled when the platform 8594sleeps.) 8595 8596The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now 8597support wake-enabled GPEs. This means that upon entering the 8598sleep state, all GPEs that are not wake-enabled are disabled. 8599When leaving the sleep state, these GPEs are reenabled. 8600 8601A local double-precision divide/modulo module has been added to 8602enhance portability to OS kernels where a 64-bit math library is 8603not available. The new module is "utmath.c". 8604 8605Several optimizations have been made to reduce the use of CPU 8606stack. Originally over 2K, the maximum stack usage is now below 86072K at 1860 bytes (1.82k) 8608 8609Fixed a problem with the AcpiGetFirmwareTable interface where the 8610root table pointer was not mapped into a logical address properly. 8611 8612Fixed a problem where a NULL pointer was being dereferenced in the 8613interpreter code for the ASL Notify operator. 8614 8615Fixed a problem where the use of the ASL Revision operator 8616returned an error. This operator now returns the current version 8617of the ACPI CA core subsystem. 8618 8619Fixed a problem where objects passed as control method parameters 8620to AcpiEvaluateObject were always deleted at method termination. 8621However, these objects may end up being stored into the namespace 8622by the called method. The object reference count mechanism was 8623applied to these objects instead of a force delete. 8624 8625Fixed a problem where static strings or buffers (contained in the 8626AML code) that are declared as package elements within the ASL 8627code could cause a fault because the interpreter would attempt to 8628delete them. These objects are now marked with the "static 8629object" flag to prevent any attempt to delete them. 8630 8631Implemented an interpreter optimization to use operands directly 8632from the state object instead of extracting the operands to local 8633variables. This reduces stack use and code size, and improves 8634performance. 8635 8636The module exxface.c was eliminated as it was an unnecessary extra 8637layer of code. 8638 8639Current core subsystem library code sizes are shown below. These 8640are the code and data sizes for the acpica.lib produced by the 8641Microsoft Visual C++ 6.0 compiler, and these values do not include 8642any ACPI driver or OSPM code. The debug version of the code 8643includes the full debug trace mechanism -- leading to a much 8644larger code and data size. Note that these values will vary 8645depending on the efficiency of the compiler and the compiler 8646options used during generation. 8647 8648 Non-Debug Version: 65K Code, 5K Data, 70K Total 8649(Previously 69K) Debug Version: 138K Code, 58K Data, 196K 8650Total (Previously 195K) 8651 8652Linux: 8653 8654Support for ACPI 2.0 64-bit integers has been added. All ACPI 8655Integer objects are now 64 bits wide 8656 8657All Acpi data types and structures are now in lower case. Only 8658Acpi macros are upper case for differentiation. 8659 8660 Documentation: 8661 8662Changes to the external interfaces as described above. 8663 8664 ---------------------------------------- 8665Summary of changes for this label: 08_31_01 8666 8667 ACPI CA Core Subsystem: 8668 8669A bug with interpreter implementation of the ASL Divide operator 8670was found and fixed. The implicit function return value (not the 8671explicit store operands) was returning the remainder instead of 8672the quotient. This was a longstanding bug and it fixes several 8673known outstanding issues on various platforms. 8674 8675The ACPI_DEBUG_PRINT and function trace entry/exit macros have 8676been further optimized for size. There are 700 invocations of the 8677DEBUG_PRINT macro alone, so each optimization reduces the size of 8678the debug version of the subsystem significantly. 8679 8680A stack trace mechanism has been implemented. The maximum stack 8681usage is about 2K on 32-bit platforms. The debugger command "stat 8682stack" will display the current maximum stack usage. 8683 8684All public symbols and global variables within the subsystem are 8685now prefixed with the string "Acpi". This keeps all of the 8686symbols grouped together in a kernel map, and avoids conflicts 8687with other kernel subsystems. 8688 8689Most of the internal fixed lookup tables have been moved into the 8690code segment via the const operator. 8691 8692Several enhancements have been made to the interpreter to both 8693reduce the code size and improve performance. 8694 8695Current core subsystem library code sizes are shown below. These 8696are the code and data sizes for the acpica.lib produced by the 8697Microsoft Visual C++ 6.0 compiler, and these values do not include 8698any ACPI driver or OSPM code. The debug version of the code 8699includes the full debug trace mechanism which contains over 700 8700invocations of the DEBUG_PRINT macro, 500 function entry macro 8701invocations, and over 900 function exit macro invocations -- 8702leading to a much larger code and data size. Note that these 8703values will vary depending on the efficiency of the compiler and 8704the compiler options used during generation. 8705 8706 Non-Debug Version: 64K Code, 5K Data, 69K Total 8707Debug Version: 137K Code, 58K Data, 195K Total 8708 8709 Linux: 8710 8711Implemented wbinvd() macro, pending a kernel-wide definition. 8712 8713Fixed /proc/acpi/event to handle poll() and short reads. 8714 8715 ASL Compiler, version X2026: 8716 8717Fixed a problem introduced in the previous label where the AML 8718 8719code emitted for package objects produced packages with zero 8720length. 8721 8722 ---------------------------------------- 8723Summary of changes for this label: 08_16_01 8724 8725ACPI CA Core Subsystem: 8726 8727The following ACPI 2.0 ASL operators have been implemented in the 8728AML interpreter (These are already supported by the Intel ASL 8729compiler): ToDecimalString, ToHexString, ToString, ToInteger, and 8730ToBuffer. Support for 64-bit AML constants is implemented in the 8731AML parser, debugger, and disassembler. 8732 8733The internal memory tracking mechanism (leak detection code) has 8734been upgraded to reduce the memory overhead (a separate tracking 8735block is no longer allocated for each memory allocation), and now 8736supports all of the internal object caches. 8737 8738The data structures and code for the internal object caches have 8739been coelesced and optimized so that there is a single cache and 8740memory list data structure and a single group of functions that 8741implement generic cache management. This has reduced the code 8742size in both the debug and release versions of the subsystem. 8743 8744The DEBUG_PRINT macro(s) have been optimized for size and replaced 8745by ACPI_DEBUG_PRINT. The syntax for this macro is slightly 8746different, because it generates a single call to an internal 8747function. This results in a savings of about 90 bytes per 8748invocation, resulting in an overall code and data savings of about 874916% in the debug version of the subsystem. 8750 8751 Linux: 8752 8753Fixed C3 disk corruption problems and re-enabled C3 on supporting 8754machines. 8755 8756Integrated low-level sleep code by Patrick Mochel. 8757 8758Further tweaked source code Linuxization. 8759 8760Other minor fixes. 8761 8762 ASL Compiler: 8763 8764Support for ACPI 2.0 variable length packages is fixed/completed. 8765 8766Fixed a problem where the optional length parameter for the ACPI 87672.0 ToString operator. 8768 8769Fixed multiple extraneous error messages when a syntax error is 8770detected within the declaration line of a control method. 8771 8772 ---------------------------------------- 8773Summary of changes for this label: 07_17_01 8774 8775ACPI CA Core Subsystem: 8776 8777Added a new interface named AcpiGetFirmwareTable to obtain any 8778ACPI table via the ACPI signature. The interface can be called at 8779any time during kernel initialization, even before the kernel 8780virtual memory manager is initialized and paging is enabled. This 8781allows kernel subsystems to obtain ACPI tables very early, even 8782before the ACPI CA subsystem is initialized. 8783 8784Fixed a problem where Fields defined with the AnyAcc attribute 8785could be resolved to the incorrect address under the following 8786conditions: 1) the field width is larger than 8 bits and 2) the 8787parent operation region is not defined on a DWORD boundary. 8788 8789Fixed a problem where the interpreter is not being locked during 8790namespace initialization (during execution of the _INI control 8791methods), causing an error when an attempt is made to release it 8792later. 8793 8794ACPI 2.0 support in the AML Interpreter has begun and will be 8795ongoing throughout the rest of this year. In this label, The Mod 8796operator is implemented. 8797 8798Added a new data type to contain full PCI addresses named 8799ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device, 8800and Function values. 8801 8802 Linux: 8803 8804Enhanced the Linux version of the source code to change most 8805capitalized ACPI type names to lowercase. For example, all 8806instances of ACPI_STATUS are changed to acpi_status. This will 8807result in a large diff, but the change is strictly cosmetic and 8808aligns the CA code closer to the Linux coding standard. 8809 8810OSL Interfaces: 8811 8812The interfaces to the PCI configuration space have been changed to 8813add the PCI Segment number and to split the single 32-bit combined 8814DeviceFunction field into two 16-bit fields. This was 8815accomplished by moving the four values that define an address in 8816PCI configuration space (segment, bus, device, and function) to 8817the new ACPI_PCI_ID structure. 8818 8819The changes to the PCI configuration space interfaces led to a 8820reexamination of the complete set of address space access 8821interfaces for PCI, I/O, and Memory. The previously existing 18 8822interfaces have proven difficult to maintain (any small change 8823must be propagated across at least 6 interfaces) and do not easily 8824allow for future expansion to 64 bits if necessary. Also, on some 8825systems, it would not be appropriate to demultiplex the access 8826width (8, 16, 32,or 64) before calling the OSL if the 8827corresponding native OS interfaces contain a similar access width 8828parameter. For these reasons, the 18 address space interfaces 8829have been replaced by these 6 new ones: 8830 8831AcpiOsReadPciConfiguration 8832AcpiOsWritePciConfiguration 8833AcpiOsReadMemory 8834AcpiOsWriteMemory 8835AcpiOsReadPort 8836AcpiOsWritePort 8837 8838Added a new interface named AcpiOsGetRootPointer to allow the OSL 8839to perform the platform and/or OS-specific actions necessary to 8840obtain the ACPI RSDP table pointer. On IA-32 platforms, this 8841interface will simply call down to the CA core to perform the low- 8842memory search for the table. On IA-64, the RSDP is obtained from 8843EFI. Migrating this interface to the OSL allows the CA core to 8844 8845remain OS and platform independent. 8846 8847Added a new interface named AcpiOsSignal to provide a generic 8848"function code and pointer" interface for various miscellaneous 8849signals and notifications that must be made to the host OS. The 8850first such signals are intended to support the ASL Fatal and 8851Breakpoint operators. In the latter case, the AcpiOsBreakpoint 8852interface has been obsoleted. 8853 8854The definition of the AcpiFormatException interface has been 8855changed to simplify its use. The caller no longer must supply a 8856buffer to the call; A pointer to a const string is now returned 8857directly. This allows the call to be easily used in printf 8858statements, etc. since the caller does not have to manage a local 8859buffer. 8860 8861 8862 ASL Compiler, Version X2025: 8863 8864The ACPI 2.0 Switch/Case/Default operators have been implemented 8865and are fully functional. They will work with all ACPI 1.0 8866interpreters, since the operators are simply translated to If/Else 8867pairs. 8868 8869The ACPI 2.0 ElseIf operator is implemented and will also work 8870with 1.0 interpreters, for the same reason. 8871 8872Implemented support for ACPI 2.0 variable-length packages. These 8873packages have a separate opcode, and their size is determined by 8874the interpreter at run-time. 8875 8876Documentation The ACPI CA Programmer Reference has been updated to 8877reflect the new interfaces and changes to existing interfaces. 8878 8879 ------------------------------------------ 8880Summary of changes for this label: 06_15_01 8881 8882 ACPI CA Core Subsystem: 8883 8884Fixed a problem where a DWORD-accessed field within a Buffer 8885object would get its byte address inadvertently rounded down to 8886the nearest DWORD. Buffers are always Byte-accessible. 8887 8888 ASL Compiler, version X2024: 8889 8890Fixed a problem where the Switch() operator would either fault or 8891hang the compiler. Note however, that the AML code for this ACPI 88922.0 operator is not yet implemented. 8893 8894Compiler uses the new AcpiOsGetTimer interface to obtain compile 8895timings. 8896 8897Implementation of the CreateField operator automatically converts 8898a reference to a named field within a resource descriptor from a 8899byte offset to a bit offset if required. 8900 8901Added some missing named fields from the resource descriptor 8902support. These are the names that are automatically created by the 8903compiler to reference fields within a descriptor. They are only 8904valid at compile time and are not passed through to the AML 8905interpreter. 8906 8907Resource descriptor named fields are now typed as Integers and 8908subject to compile-time typechecking when used in expressions. 8909 8910 ------------------------------------------ 8911Summary of changes for this label: 05_18_01 8912 8913 ACPI CA Core Subsystem: 8914 8915Fixed a couple of problems in the Field support code where bits 8916from adjacent fields could be returned along with the proper field 8917bits. Restructured the field support code to improve performance, 8918readability and maintainability. 8919 8920New DEBUG_PRINTP macro automatically inserts the procedure name 8921into the output, saving hundreds of copies of procedure name 8922strings within the source, shrinking the memory footprint of the 8923debug version of the core subsystem. 8924 8925 Source Code Structure: 8926 8927The source code directory tree was restructured to reflect the 8928current organization of the component architecture. Some files 8929and directories have been moved and/or renamed. 8930 8931 Linux: 8932 8933Fixed leaking kacpidpc processes. 8934 8935Fixed queueing event data even when /proc/acpi/event is not 8936opened. 8937 8938 ASL Compiler, version X2020: 8939 8940Memory allocation performance enhancement - over 24X compile time 8941improvement on large ASL files. Parse nodes and namestring 8942buffers are now allocated from a large internal compiler buffer. 8943 8944The temporary .SRC file is deleted unless the "-s" option is 8945specified 8946 8947The "-d" debug output option now sends all output to the .DBG file 8948instead of the console. 8949 8950"External" second parameter is now optional 8951 8952"ElseIf" syntax now properly allows the predicate 8953 8954Last operand to "Load" now recognized as a Target operand 8955 8956Debug object can now be used anywhere as a normal object. 8957 8958ResourceTemplate now returns an object of type BUFFER 8959 8960EISAID now returns an object of type INTEGER 8961 8962"Index" now works with a STRING operand 8963 8964"LoadTable" now accepts optional parameters 8965 8966"ToString" length parameter is now optional 8967 8968"Interrupt (ResourceType," parse error fixed. 8969 8970"Register" with a user-defined region space parse error fixed 8971 8972Escaped backslash at the end of a string ("\\") scan/parse error 8973fixed 8974 8975"Revision" is now an object of type INTEGER. 8976 8977 8978 8979------------------------------------------ 8980Summary of changes for this label: 05_02_01 8981 8982Linux: 8983 8984/proc/acpi/event now blocks properly. 8985 8986Removed /proc/sys/acpi. You can still dump your DSDT from 8987/proc/acpi/dsdt. 8988 8989 ACPI CA Core Subsystem: 8990 8991Fixed a problem introduced in the previous label where some of the 8992"small" resource descriptor types were not recognized. 8993 8994Improved error messages for the case where an ASL Field is outside 8995the range of the parent operation region. 8996 8997 ASL Compiler, version X2018: 8998 8999 9000Added error detection for ASL Fields that extend beyond the length 9001of the parent operation region (only if the length of the region 9002is known at compile time.) This includes fields that have a 9003minimum access width that is smaller than the parent region, and 9004individual field units that are partially or entirely beyond the 9005extent of the parent. 9006 9007 9008 9009------------------------------------------ 9010Summary of changes for this label: 04_27_01 9011 9012 ACPI CA Core Subsystem: 9013 9014Fixed a problem where the namespace mutex could be released at the 9015wrong time during execution of AcpiRemoveAddressSpaceHandler. 9016 9017Added optional thread ID output for debug traces, to simplify 9018debugging of multiple threads. Added context switch notification 9019when the debug code realizes that a different thread is now 9020executing ACPI code. 9021 9022Some additional external data types have been prefixed with the 9023string "ACPI_" for consistency. This may effect existing code. 9024The data types affected are the external callback typedefs - e.g., 9025 9026WALK_CALLBACK becomes ACPI_WALK_CALLBACK. 9027 9028 Linux: 9029 9030Fixed an issue with the OSL semaphore implementation where a 9031thread was waking up with an error from receiving a SIGCHLD 9032signal. 9033 9034Linux version of ACPI CA now uses the system C library for string 9035manipulation routines instead of a local implementation. 9036 9037Cleaned up comments and removed TBDs. 9038 9039 ASL Compiler, version X2017: 9040 9041Enhanced error detection and reporting for all file I/O 9042operations. 9043 9044 Documentation: 9045 9046Programmer Reference updated to version 1.06. 9047 9048 9049 9050------------------------------------------ 9051Summary of changes for this label: 04_13_01 9052 9053 ACPI CA Core Subsystem: 9054 9055Restructured support for BufferFields and RegionFields. 9056BankFields support is now fully operational. All known 32-bit 9057limitations on field sizes have been removed. Both BufferFields 9058and (Operation) RegionFields are now supported by the same field 9059management code. 9060 9061Resource support now supports QWORD address and IO resources. The 906216/32/64 bit address structures and the Extended IRQ structure 9063have been changed to properly handle Source Resource strings. 9064 9065A ThreadId of -1 is now used to indicate a "mutex not acquired" 9066condition internally and must never be returned by AcpiOsThreadId. 9067This reserved value was changed from 0 since Unix systems allow a 9068thread ID of 0. 9069 9070Linux: 9071 9072Driver code reorganized to enhance portability 9073 9074Added a kernel configuration option to control ACPI_DEBUG 9075 9076Fixed the EC driver to honor _GLK. 9077 9078ASL Compiler, version X2016: 9079 9080Fixed support for the "FixedHw" keyword. Previously, the FixedHw 9081address space was set to 0, not 0x7f as it should be. 9082 9083 ------------------------------------------ 9084Summary of changes for this label: 03_13_01 9085 9086 ACPI CA Core Subsystem: 9087 9088During ACPI initialization, the _SB_._INI method is now run if 9089present. 9090 9091Notify handler fix - notifies are deferred until the parent method 9092completes execution. This fixes the "mutex already acquired" 9093issue seen occasionally. 9094 9095Part of the "implicit conversion" rules in ACPI 2.0 have been 9096found to cause compatibility problems with existing ASL/AML. The 9097convert "result-to-target-type" implementation has been removed 9098for stores to method Args and Locals. Source operand conversion 9099is still fully implemented. Possible changes to ACPI 2.0 9100specification pending. 9101 9102Fix to AcpiRsCalculatePciRoutingTableLength to return correct 9103length. 9104 9105Fix for compiler warnings for 64-bit compiles. 9106 9107 Linux: 9108 9109/proc output aligned for easier parsing. 9110 9111Release-version compile problem fixed. 9112 9113New kernel configuration options documented in Configure.help. 9114 9115IBM 600E - Fixed Sleep button may generate "Invalid <NULL> 9116context" message. 9117 9118 OSPM: 9119 9120Power resource driver integrated with bus manager. 9121 9122Fixed kernel fault during active cooling for thermal zones. 9123 9124Source Code: 9125 9126The source code tree has been restructured. 9127 9128 9129 9130------------------------------------------ 9131Summary of changes for this label: 03_02_01 9132 9133 Linux OS Services Layer (OSL): 9134 9135Major revision of all Linux-specific code. 9136 9137Modularized all ACPI-specific drivers. 9138 9139Added new thermal zone and power resource drivers. 9140 9141Revamped /proc interface (new functionality is under /proc/acpi). 9142 9143New kernel configuration options. 9144 9145 Linux known issues: 9146 9147New kernel configuration options not documented in Configure.help 9148yet. 9149 9150 9151Module dependencies not currently implemented. If used, they 9152should be loaded in this order: busmgr, power, ec, system, 9153processor, battery, ac_adapter, button, thermal. 9154 9155Modules will not load if CONFIG_MODVERSION is set. 9156 9157IBM 600E - entering S5 may reboot instead of shutting down. 9158 9159IBM 600E - Sleep button may generate "Invalid <NULL> context" 9160message. 9161 9162Some systems may fail with "execution mutex already acquired" 9163message. 9164 9165 ACPI CA Core Subsystem: 9166 9167Added a new OSL Interface, AcpiOsGetThreadId. This was required 9168for the deadlock detection code. Defined to return a non-zero, 32- 9169bit thread ID for the currently executing thread. May be a non- 9170zero constant integer on single-thread systems. 9171 9172Implemented deadlock detection for internal subsystem mutexes. We 9173may add conditional compilation for this code (debug only) later. 9174 9175ASL/AML Mutex object semantics are now fully supported. This 9176includes multiple acquires/releases by owner and support for the 9177 9178Mutex SyncLevel parameter. 9179 9180A new "Force Release" mechanism automatically frees all ASL 9181Mutexes that have been acquired but not released when a thread 9182exits the interpreter. This forces conformance to the ACPI spec 9183("All mutexes must be released when an invocation exits") and 9184prevents deadlocked ASL threads. This mechanism can be expanded 9185(later) to monitor other resource acquisitions if OEM ASL code 9186continues to misbehave (which it will). 9187 9188Several new ACPI exception codes have been added for the Mutex 9189support. 9190 9191Recursive method calls are now allowed and supported (the ACPI 9192spec does in fact allow recursive method calls.) The number of 9193recursive calls is subject to the restrictions imposed by the 9194SERIALIZED method keyword and SyncLevel (ACPI 2.0) method 9195parameter. 9196 9197Implemented support for the SyncLevel parameter for control 9198methods (ACPI 2.0 feature) 9199 9200Fixed a deadlock problem when multiple threads attempted to use 9201the interpreter. 9202 9203Fixed a problem where the string length of a String package 9204element was not always set in a package returned from 9205AcpiEvaluateObject. 9206 9207Fixed a problem where the length of a String package element was 9208not always included in the length of the overall package returned 9209from AcpiEvaluateObject. 9210 9211Added external interfaces (Acpi*) to the ACPI debug memory 9212manager. This manager keeps a list of all outstanding 9213allocations, and can therefore detect memory leaks and attempts to 9214free memory blocks more than once. Useful for code such as the 9215power manager, etc. May not be appropriate for device drivers. 9216Performance with the debug code enabled is slow. 9217 9218The ACPI Global Lock is now an optional hardware element. 9219 9220 ASL Compiler Version X2015: 9221 9222Integrated changes to allow the compiler to be generated on 9223multiple platforms. 9224 9225Linux makefile added to generate the compiler on Linux 9226 9227 Source Code: 9228 9229All platform-specific headers have been moved to their own 9230subdirectory, Include/Platform. 9231 9232New source file added, Interpreter/ammutex.c 9233 9234New header file, Include/acstruct.h 9235 9236 Documentation: 9237 9238The programmer reference has been updated for the following new 9239interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree 9240 9241 ------------------------------------------ 9242Summary of changes for this label: 02_08_01 9243 9244Core ACPI CA Subsystem: Fixed a problem where an error was 9245incorrectly returned if the return resource buffer was larger than 9246the actual data (in the resource interfaces). 9247 9248References to named objects within packages are resolved to the 9249 9250full pathname string before packages are returned directly (via 9251the AcpiEvaluateObject interface) or indirectly via the resource 9252interfaces. 9253 9254Linux OS Services Layer (OSL): 9255 9256Improved /proc battery interface. 9257 9258 9259Added C-state debugging output and other miscellaneous fixes. 9260 9261ASL Compiler Version X2014: 9262 9263All defined method arguments can now be used as local variables, 9264including the ones that are not actually passed in as parameters. 9265The compiler tracks initialization of the arguments and issues an 9266exception if they are used without prior assignment (just like 9267locals). 9268 9269The -o option now specifies a filename prefix that is used for all 9270output files, including the AML output file. Otherwise, the 9271default behavior is as follows: 1) the AML goes to the file 9272specified in the DSDT. 2) all other output files use the input 9273source filename as the base. 9274 9275 ------------------------------------------ 9276Summary of changes for this label: 01_25_01 9277 9278Core ACPI CA Subsystem: Restructured the implementation of object 9279store support within the interpreter. This includes support for 9280the Store operator as well as any ASL operators that include a 9281target operand. 9282 9283Partially implemented support for Implicit Result-to-Target 9284conversion. This is when a result object is converted on the fly 9285to the type of an existing target object. Completion of this 9286support is pending further analysis of the ACPI specification 9287concerning this matter. 9288 9289CPU-specific code has been removed from the subsystem (hardware 9290directory). 9291 9292New Power Management Timer functions added 9293 9294Linux OS Services Layer (OSL): Moved system state transition code 9295to the core, fixed it, and modified Linux OSL accordingly. 9296 9297Fixed C2 and C3 latency calculations. 9298 9299 9300We no longer use the compilation date for the version message on 9301initialization, but retrieve the version from AcpiGetSystemInfo(). 9302 9303Incorporated for fix Sony VAIO machines. 9304 9305Documentation: The Programmer Reference has been updated and 9306reformatted. 9307 9308 9309ASL Compiler: Version X2013: Fixed a problem where the line 9310numbering and error reporting could get out of sync in the 9311presence of multiple include files. 9312 9313 ------------------------------------------ 9314Summary of changes for this label: 01_15_01 9315 9316Core ACPI CA Subsystem: 9317 9318Implemented support for type conversions in the execution of the 9319ASL Concatenate operator (The second operand is converted to 9320match the type of the first operand before concatenation.) 9321 9322Support for implicit source operand conversion is partially 9323implemented. The ASL source operand types Integer, Buffer, and 9324String are freely interchangeable for most ASL operators and are 9325converted by the interpreter on the fly as required. Implicit 9326Target operand conversion (where the result is converted to the 9327target type before storing) is not yet implemented. 9328 9329Support for 32-bit and 64-bit BCD integers is implemented. 9330 9331Problem fixed where a field read on an aligned field could cause a 9332read past the end of the field. 9333 9334New exception, AE_AML_NO_RETURN_VALUE, is returned when a method 9335does not return a value, but the caller expects one. (The ASL 9336compiler flags this as a warning.) 9337 9338ASL Compiler: 9339 9340Version X2011: 93411. Static typechecking of all operands is implemented. This 9342prevents the use of invalid objects (such as using a Package where 9343an Integer is required) at compile time instead of at interpreter 9344run-time. 93452. The ASL source line is printed with ALL errors and warnings. 93463. Bug fix for source EOF without final linefeed. 93474. Debug option is split into a parse trace and a namespace trace. 93485. Namespace output option (-n) includes initial values for 9349integers and strings. 93506. Parse-only option added for quick syntax checking. 93517. Compiler checks for duplicate ACPI name declarations 9352 9353Version X2012: 93541. Relaxed typechecking to allow interchangeability between 9355strings, integers, and buffers. These types are now converted by 9356the interpreter at runtime. 93572. Compiler reports time taken by each internal subsystem in the 9358debug output file. 9359 9360 9361 ------------------------------------------ 9362Summary of changes for this label: 12_14_00 9363 9364ASL Compiler: 9365 9366This is the first official release of the compiler. Since the 9367compiler requires elements of the Core Subsystem, this label 9368synchronizes everything. 9369 9370------------------------------------------ 9371Summary of changes for this label: 12_08_00 9372 9373 9374Fixed a problem where named references within the ASL definition 9375of both OperationRegions and CreateXXXFields did not work 9376properly. The symptom was an AE_AML_OPERAND_TYPE during 9377initialization of the region/field. This is similar (but not 9378related internally) to the problem that was fixed in the last 9379label. 9380 9381Implemented both 32-bit and 64-bit support for the BCD ASL 9382functions ToBCD and FromBCD. 9383 9384Updated all legal headers to include "2000" in the copyright 9385years. 9386 9387 ------------------------------------------ 9388Summary of changes for this label: 12_01_00 9389 9390Fixed a problem where method invocations within the ASL definition 9391of both OperationRegions and CreateXXXFields did not work 9392properly. The symptom was an AE_AML_OPERAND_TYPE during 9393initialization of the region/field: 9394 9395 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments 9396[DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s) 9397(0x3005) 9398 9399Fixed a problem where operators with more than one nested 9400subexpression would fail. The symptoms were varied, by mostly 9401AE_AML_OPERAND_TYPE errors. This was actually a rather serious 9402problem that has gone unnoticed until now. 9403 9404 Subtract (Add (1,2), Multiply (3,4)) 9405 9406Fixed a problem where AcpiGetHandle didn't quite get fixed in the 9407previous build (The prefix part of a relative path was handled 9408incorrectly). 9409 9410Fixed a problem where Operation Region initialization failed if 9411the operation region name was a "namepath" instead of a simple 9412"nameseg". Symptom was an AE_NO_OPERAND error. 9413 9414Fixed a problem where an assignment to a local variable via the 9415indirect RefOf mechanism only worked for the first such 9416assignment. Subsequent assignments were ignored. 9417 9418 ------------------------------------------ 9419Summary of changes for this label: 11_15_00 9420 9421ACPI 2.0 table support with backwards support for ACPI 1.0 and the 94220.71 extensions. Note: although we can read ACPI 2.0 BIOS tables, 9423the AML interpreter does NOT have support for the new 2.0 ASL 9424grammar terms at this time. 9425 9426All ACPI hardware access is via the GAS structures in the ACPI 2.0 9427FADT. 9428 9429All physical memory addresses across all platforms are now 64 bits 9430wide. Logical address width remains dependent on the platform 9431(i.e., "void *"). 9432 9433AcpiOsMapMemory interface changed to a 64-bit physical address. 9434 9435The AML interpreter integer size is now 64 bits, as per the ACPI 94362.0 specification. 9437 9438For backwards compatibility with ACPI 1.0, ACPI tables with a 9439revision number less than 2 use 32-bit integers only. 9440 9441Fixed a problem where the evaluation of OpRegion operands did not 9442always resolve them to numbers properly. 9443 9444------------------------------------------ 9445Summary of changes for this label: 10_20_00 9446 9447Fix for CBN_._STA issue. This fix will allow correct access to 9448CBN_ OpRegions when the _STA returns 0x8. 9449 9450Support to convert ACPI constants (Ones, Zeros, One) to actual 9451values before a package object is returned 9452 9453Fix for method call as predicate to if/while construct causing 9454incorrect if/while behavior 9455 9456Fix for Else block package lengths sometimes calculated wrong (if 9457block > 63 bytes) 9458 9459Fix for Processor object length field, was always zero 9460 9461Table load abort if FACP sanity check fails 9462 9463Fix for problem with Scope(name) if name already exists 9464 9465Warning emitted if a named object referenced cannot be found 9466(resolved) during method execution. 9467 9468 9469 9470 9471 9472------------------------------------------ 9473Summary of changes for this label: 9_29_00 9474 9475New table initialization interfaces: AcpiInitializeSubsystem no 9476longer has any parameters AcpiFindRootPointer - Find the RSDP (if 9477necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP- 9478>RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by 9479AcpiLoadTables 9480 9481Note: These interface changes require changes to all existing OSDs 9482 9483The PCI_Config default address space handler is always installed 9484at the root namespace object. 9485 9486------------------------------------------- 9487Summary of changes for this label: 09_15_00 9488 9489The new initialization architecture is implemented. New 9490interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize) 9491AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace 9492 9493(Namespace is automatically loaded when a table is loaded) 9494 9495The ACPI_OPERAND_OBJECT has been optimized to shrink its size from 949652 bytes to 32 bytes. There is usually one of these for every 9497namespace object, so the memory savings is significant. 9498 9499Implemented just-in-time evaluation of the CreateField operators. 9500 9501Bug fixes for IA-64 support have been integrated. 9502 9503Additional code review comments have been implemented 9504 9505The so-called "third pass parse" has been replaced by a final walk 9506through the namespace to initialize all operation regions (address 9507spaces) and fields that have not yet been initialized during the 9508execution of the various _INI and REG methods. 9509 9510New file - namespace/nsinit.c 9511 9512------------------------------------------- 9513Summary of changes for this label: 09_01_00 9514 9515Namespace manager data structures have been reworked to change the 9516primary object from a table to a single object. This has 9517resulted in dynamic memory savings of 3X within the namespace and 95182X overall in the ACPI CA subsystem. 9519 9520Fixed problem where the call to AcpiEvFindPciRootBuses was 9521inadvertently left commented out. 9522 9523Reduced the warning count when generating the source with the GCC 9524compiler. 9525 9526Revision numbers added to each module header showing the 9527SourceSafe version of the file. Please refer to this version 9528number when giving us feedback or comments on individual modules. 9529 9530The main object types within the subsystem have been renamed to 9531clarify their purpose: 9532 9533ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT 9534ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT 9535ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE 9536 9537NOTE: no changes to the initialization sequence are included in 9538this label. 9539 9540------------------------------------------- 9541Summary of changes for this label: 08_23_00 9542 9543Fixed problem where TerminateControlMethod was being called 9544multiple times per method 9545 9546Fixed debugger problem where single stepping caused a semaphore to 9547be oversignalled 9548 9549Improved performance through additional parse object caching - 9550added ACPI_EXTENDED_OP type 9551 9552------------------------------------------- 9553Summary of changes for this label: 08_10_00 9554 9555Parser/Interpreter integration: Eliminated the creation of 9556complete parse trees for ACPI tables and control methods. 9557Instead, parse subtrees are created and then deleted as soon as 9558they are processed (Either entered into the namespace or executed 9559by the interpreter). This reduces the use of dynamic kernel 9560memory significantly. (about 10X) 9561 9562Exception codes broken into classes and renumbered. Be sure to 9563recompile all code that includes acexcep.h. Hopefully we won't 9564have to renumber the codes again now that they are split into 9565classes (environment, programmer, AML code, ACPI table, and 9566internal). 9567 9568Fixed some additional alignment issues in the Resource Manager 9569subcomponent 9570 9571Implemented semaphore tracking in the AcpiExec utility, and fixed 9572several places where mutexes/semaphores were being unlocked 9573without a corresponding lock operation. There are no known 9574semaphore or mutex "leaks" at this time. 9575 9576Fixed the case where an ASL Return operator is used to return an 9577unnamed package. 9578 9579------------------------------------------- 9580Summary of changes for this label: 07_28_00 9581 9582Fixed a problem with the way addresses were calculated in 9583AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem 9584manifested itself when a Field was created with WordAccess or 9585DwordAccess, but the field unit defined within the Field was less 9586 9587than a Word or Dword. 9588 9589Fixed a problem in AmlDumpOperands() module's loop to pull 9590operands off of the operand stack to display information. The 9591problem manifested itself as a TLB error on 64-bit systems when 9592accessing an operand stack with two or more operands. 9593 9594Fixed a problem with the PCI configuration space handlers where 9595context was getting confused between accesses. This required a 9596change to the generic address space handler and address space 9597setup definitions. Handlers now get both a global handler context 9598(this is the one passed in by the user when executing 9599AcpiInstallAddressSpaceHandler() and a specific region context 9600that is unique to each region (For example, the _ADR, _SEG and 9601_BBN values associated with a specific region). The generic 9602function definitions have changed to the following: 9603 9604typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function, 9605UINT32 Address, UINT32 BitWidth, UINT32 *Value, void 9606*HandlerContext, // This used to be void *Context void 9607*RegionContext); // This is an additional parameter 9608 9609typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE 9610RegionHandle, UINT32 Function, void *HandlerContext, void 9611**RegionContext); // This used to be **ReturnContext 9612 9613------------------------------------------- 9614Summary of changes for this label: 07_21_00 9615 9616Major file consolidation and rename. All files within the 9617interpreter have been renamed as well as most header files. This 9618was done to prevent collisions with existing files in the host 9619OSs -- filenames such as "config.h" and "global.h" seem to be 9620quite common. The VC project files have been updated. All 9621makefiles will require modification. 9622 9623The parser/interpreter integration continues in Phase 5 with the 9624implementation of a complete 2-pass parse (the AML is parsed 9625twice) for each table; This avoids the construction of a huge 9626parse tree and therefore reduces the amount of dynamic memory 9627required by the subsystem. Greater use of the parse object cache 9628means that performance is unaffected. 9629 9630Many comments from the two code reviews have been rolled in. 9631 9632The 64-bit alignment support is complete. 9633 9634------------------------------------------- 9635Summary of changes for this label: 06_30_00 9636 9637With a nod and a tip of the hat to the technology of yesteryear, 9638we've added support in the source code for 80 column output 9639devices. The code is now mostly constrained to 80 columns or 9640less to support environments and editors that 1) cannot display 9641or print more than 80 characters on a single line, and 2) cannot 9642disable line wrapping. 9643 9644A major restructuring of the namespace data structure has been 9645completed. The result is 1) cleaner and more 9646understandable/maintainable code, and 2) a significant reduction 9647in the dynamic memory requirement for each named ACPI object 9648(almost half). 9649 9650------------------------------------------- 9651Summary of changes for this label: 06_23_00 9652 9653Linux support has been added. In order to obtain approval to get 9654the ACPI CA subsystem into the Linux kernel, we've had to make 9655quite a few changes to the base subsystem that will affect all 9656users (all the changes are generic and OS- independent). The 9657effects of these global changes have been somewhat far reaching. 9658Files have been merged and/or renamed and interfaces have been 9659renamed. The major changes are described below. 9660 9661Osd* interfaces renamed to AcpiOs* to eliminate namespace 9662pollution/confusion within our target kernels. All OSD 9663interfaces must be modified to match the new naming convention. 9664 9665Files merged across the subsystem. A number of the smaller source 9666and header files have been merged to reduce the file count and 9667increase the density of the existing files. There are too many 9668to list here. In general, makefiles that call out individual 9669files will require rebuilding. 9670 9671Interpreter files renamed. All interpreter files now have the 9672prefix am* instead of ie* and is*. 9673 9674Header files renamed: The acapi.h file is now acpixf.h. The 9675acpiosd.h file is now acpiosxf.h. We are removing references to 9676the acronym "API" since it is somewhat windowsy. The new name is 9677"external interface" or xface or xf in the filenames.j 9678 9679 9680All manifest constants have been forced to upper case (some were 9681mixed case.) Also, the string "ACPI_" has been prepended to many 9682(not all) of the constants, typedefs, and structs. 9683 9684The globals "DebugLevel" and "DebugLayer" have been renamed 9685"AcpiDbgLevel" and "AcpiDbgLayer" respectively. 9686 9687All other globals within the subsystem are now prefixed with 9688"AcpiGbl_" Internal procedures within the subsystem are now 9689prefixed with "Acpi" (with only a few exceptions). The original 9690two-letter abbreviation for the subcomponent remains after "Acpi" 9691- for example, CmCallocate became AcpiCmCallocate. 9692 9693Added a source code translation/conversion utility. Used to 9694generate the Linux source code, it can be modified to generate 9695other types of source as well. Can also be used to cleanup 9696existing source by removing extraneous spaces and blank lines. 9697Found in tools/acpisrc/* 9698 9699OsdUnMapMemory was renamed to OsdUnmapMemory and then 9700AcpiOsUnmapMemory. (UnMap became Unmap). 9701 9702A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore. 9703When set to one, this indicates that the caller wants to use the 9704 9705semaphore as a mutex, not a counting semaphore. ACPI CA uses 9706both types. However, implementers of this call may want to use 9707different OS primitives depending on the type of semaphore 9708requested. For example, some operating systems provide separate 9709 9710"mutex" and "semaphore" interfaces - where the mutex interface is 9711much faster because it doesn't have all the overhead of a full 9712semaphore implementation. 9713 9714Fixed a deadlock problem where a method that accesses the PCI 9715address space can block forever if it is the first access to the 9716space. 9717 9718------------------------------------------- 9719Summary of changes for this label: 06_02_00 9720 9721Support for environments that cannot handle unaligned data 9722accesses (e.g. firmware and OS environments devoid of alignment 9723handler technology namely SAL/EFI and the IA-64 Linux kernel) has 9724been added (via configurable macros) in these three areas: - 9725Transfer of data from the raw AML byte stream is done via byte 9726moves instead of word/dword/qword moves. - External objects are 9727aligned within the user buffer, including package elements (sub- 9728objects). - Conversion of name strings to UINT32 Acpi Names is now 9729done byte-wise. 9730 9731The Store operator was modified to mimic Microsoft's 9732implementation when storing to a Buffer Field. 9733 9734Added a check of the BM_STS bit before entering C3. 9735 9736The methods subdirectory has been obsoleted and removed. A new 9737file, cmeval.c subsumes the functionality. 9738 9739A 16-bit (DOS) version of AcpiExec has been developed. The 9740makefile is under the acpiexec directory. 9741