1---------------------------------------- 221 January 2010. Summary of changes for version 20100121: 3 41) ACPI CA Core Subsystem: 5 6Added the 2010 copyright to all module headers and signons. This affects 7virtually every file in the ACPICA core subsystem, the iASL compiler, the 8tools/utilities, and the test suites. 9 10Implemented a change to the AcpiGetDevices interface to eliminate unnecessary 11invocations of the _STA method. In the case where a specific _HID is 12requested, do not run _STA until a _HID match is found. This eliminates 13potentially dozens of _STA calls during a search for a particular device/HID, 14which in turn can improve boot times. ACPICA BZ 828. Lin Ming. 15 16Implemented an additional repair for predefined method return values. Attempt 17to repair unexpected NULL elements within returned Package objects. Create an 18Integer of value zero, a NULL String, or a zero-length Buffer as appropriate. 19ACPICA BZ 818. Lin Ming, Bob Moore. 20 21Removed the obsolete ACPI_INTEGER data type. This type was introduced as the 22code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0 (with 2364-bit AML integers). It is now obsolete and this change removes it from the 24ACPICA code base, replaced by UINT64. The original typedef has been retained 25for now for compatibility with existing device driver code. ACPICA BZ 824. 26 27Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field in 28the parse tree object. 29 30Added additional warning options for the gcc-4 generation. Updated the source 31accordingly. This includes some code restructuring to eliminate unreachable 32code, elimination of some gotos, elimination of unused return values, some 33additional casting, and removal of redundant declarations. 34 35Example Code and Data Size: These are the sizes for the OS-independent 36acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 37debug version of the code includes the debug output trace mechanism and has a 38much larger code and data size. 39 40 Previous Release: 41 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 42 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 43 Current Release: 44 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 45 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 46 472) iASL Compiler/Disassembler and Tools: 48 49No functional changes for this release. 50 51---------------------------------------- 5214 December 2009. Summary of changes for version 20091214: 53 541) ACPI CA Core Subsystem: 55 56Enhanced automatic data type conversions for predefined name repairs. This 57change expands the automatic repairs/conversions for predefined name return 58values to make Integers, Strings, and Buffers fully interchangeable. Also, a 59Buffer can be converted to a Package of Integers if necessary. The nsrepair.c 60module was completely restructured. Lin Ming, Bob Moore. 61 62Implemented automatic removal of null package elements during predefined name 63repairs. This change will automatically remove embedded and trailing NULL 64package elements from returned package objects that are defined to contain a 65variable number of sub-packages. The driver is then presented with a package 66with no null elements to deal with. ACPICA BZ 819. 67 68Implemented a repair for the predefined _FDE and _GTM names. The expected 69return value for both names is a Buffer of 5 DWORDs. This repair fixes two 70possible problems (both seen in the field), where a package of integers is 71returned, or a buffer of BYTEs is returned. With assistance from Jung-uk Kim. 72 73Implemented additional module-level code support. This change will properly 74execute module-level code that is not at the root of the namespace (under a 75Device object, etc.). Now executes the code within the current scope instead 76of the root. ACPICA BZ 762. Lin Ming. 77 78Fixed possible mutex acquisition errors when running _REG methods. Fixes a 79problem where mutex errors can occur when running a _REG method that is in 80the same scope as a method-defined operation region or an operation region 81under a module-level IF block. This type of code is rare, so the problem has 82not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore. 83 84Fixed a possible memory leak during module-level code execution. An object 85could be leaked for each block of executed module-level code if the 86interpreter slack mode is enabled This change deletes any implicitly returned 87object from the module-level code block. Lin Ming. 88 89Removed messages for successful predefined repair(s). The repair mechanism 90was considered too wordy. Now, messages are only unconditionally emitted if 91the return object cannot be repaired. Existing messages for successful 92repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ 827. 93 94Example Code and Data Size: These are the sizes for the OS-independent 95acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 96debug version of the code includes the debug output trace mechanism and has a 97much larger code and data size. 98 99 Previous Release: 100 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 101 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 102 Current Release: 103 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 104 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 105 1062) iASL Compiler/Disassembler and Tools: 107 108iASL: Fixed a regression introduced in 20091112 where intermediate .SRC files 109were no longer automatically removed at the termination of the compile. 110 111acpiexec: Implemented the -f option to specify default region fill value. 112This option specifies the value used to initialize buffers that simulate 113operation regions. Default value is zero. Useful for debugging problems that 114depend on a specific initial value for a region or field. 115 116---------------------------------------- 11712 November 2009. Summary of changes for version 20091112: 118 1191) ACPI CA Core Subsystem: 120 121Implemented a post-order callback to AcpiWalkNamespace. The existing 122interface only has a pre-order callback. This change adds an additional 123parameter for a post-order callback which will be more useful for bus scans. 124ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference. 125 126Modified the behavior of the operation region memory mapping cache for 127SystemMemory. Ensure that the memory mappings created for operation regions 128do not cross 4K page boundaries. Crossing a page boundary while mapping 129regions can cause kernel warnings on some hosts if the pages have different 130attributes. Such regions are probably BIOS bugs, and this is the workaround. 131Linux BZ 14445. Lin Ming. 132 133Implemented an automatic repair for predefined methods that must return 134sorted lists. This change will repair (by sorting) packages returned by _ALR, 135_PSS, and _TSS. Drivers can now assume that the packages are correctly sorted 136and do not contain NULL package elements. Adds one new file, 137namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore. 138 139Fixed a possible fault during predefined name validation if a return Package 140object contains NULL elements. Also adds a warning if a NULL element is 141followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement may 142include repair or removal of all such NULL elements where possible. 143 144Implemented additional module-level executable AML code support. This change 145will execute module-level code that is not at the root of the namespace 146(under a Device object, etc.) at table load time. Module-level executable AML 147code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming. 148 149Implemented a new internal function to create Integer objects. This function 150simplifies miscellaneous object creation code. ACPICA BZ 823. 151 152Reduced the severity of predefined repair messages, Warning to Info. Since 153the object was successfully repaired, a warning is too severe. Reduced to an 154info message for now. These messages may eventually be changed to debug-only. 155ACPICA BZ 812. 156 157Example Code and Data Size: These are the sizes for the OS-independent 158acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 159debug version of the code includes the debug output trace mechanism and has a 160much larger code and data size. 161 162 Previous Release: 163 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 164 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 165 Current Release: 166 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 167 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 168 1692) iASL Compiler/Disassembler and Tools: 170 171iASL: Implemented Switch() with While(1) so that Break works correctly. This 172change correctly implements the Switch operator with a surrounding While(1) 173so that the Break operator works as expected. ACPICA BZ 461. Lin Ming. 174 175iASL: Added a message if a package initializer list is shorter than package 176length. Adds a new remark for a Package() declaration if an initializer list 177exists, but is shorter than the declared length of the package. Although 178technically legal, this is probably a coding error and it is seen in the 179field. ACPICA BZ 815. Lin Ming, Bob Moore. 180 181iASL: Fixed a problem where the compiler could fault after the maximum number 182of errors was reached (200). 183 184acpixtract: Fixed a possible warning for pointer cast if the compiler warning 185level set very high. 186 187---------------------------------------- 18813 October 2009. Summary of changes for version 20091013: 189 1901) ACPI CA Core Subsystem: 191 192Fixed a problem where an Operation Region _REG method could be executed more 193than once. If a custom address space handler is installed by the host before 194the "initialize operation regions" phase of the ACPICA initialization, any 195_REG methods for that address space could be executed twice. This change 196fixes the problem. ACPICA BZ 427. Lin Ming. 197 198Fixed a possible memory leak for the Scope() ASL operator. When the exact 199invocation of "Scope(\)" is executed (change scope to root), one internal 200operand object was leaked. Lin Ming. 201 202Implemented a run-time repair for the _MAT predefined method. If the _MAT 203return value is defined as a Field object in the AML, and the field 204size is less than or equal to the default width of an integer (32 or 64),_MAT 205can incorrectly return an Integer instead of a Buffer. ACPICA now 206automatically repairs this problem. ACPICA BZ 810. 207 208Implemented a run-time repair for the _BIF and _BIX predefined methods. The 209"OEM Information" field is often incorrectly returned as an Integer with 210value zero if the field is not supported by the platform. This is due to an 211ambiguity in the ACPI specification. The field should always be a string. 212ACPICA now automatically repairs this problem by returning a NULL string 213within the returned Package. ACPICA BZ 807. 214 215Example Code and Data Size: These are the sizes for the OS-independent 216acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 217debug version of the code includes the debug output trace mechanism and has a 218much larger code and data size. 219 220 Previous Release: 221 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 222 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 223 Current Release: 224 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 225 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 226 2272) iASL Compiler/Disassembler and Tools: 228 229Disassembler: Fixed a problem where references to external symbols that 230contained one or more parent-prefixes (carats) were not handled correctly, 231possibly causing a fault. ACPICA BZ 806. Lin Ming. 232 233Disassembler: Restructured the code so that all functions that handle 234external symbols are in a single module. One new file is added, 235common/dmextern.c. 236 237AML Debugger: Added a max count argument for the Batch command (which 238executes multiple predefined methods within the namespace.) 239 240iASL: Updated the compiler documentation (User Reference.) Available at 241http://www.acpica.org/documentation/. ACPICA BZ 750. 242 243AcpiXtract: Updated for Lint and other formatting changes. Close all open 244files. 245 246---------------------------------------- 24703 September 2009. Summary of changes for version 20090903: 248 2491) ACPI CA Core Subsystem: 250 251For Windows Vista compatibility, added the automatic execution of an _INI 252method located at the namespace root (\_INI). This method is executed at 253table load time. This support is in addition to the automatic execution of 254\_SB._INI. Lin Ming. 255 256Fixed a possible memory leak in the interpreter for AML package objects if 257the package initializer list is longer than the defined size of the package. 258This apparently can only happen if the BIOS changes the package size on the 259fly (seen in a _PSS object), as ASL compilers do not allow this. The 260interpreter will truncate the package to the defined size (and issue an error 261message), but previously could leave the extra objects undeleted if they were 262pre-created during the argument processing (such is the case if the package 263consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805. 264 265Fixed a problem seen when a Buffer or String is stored to itself via ASL. 266This has been reported in the field. Previously, ACPICA would zero out the 267buffer/string. Now, the operation is treated as a noop. Provides Windows 268compatibility. ACPICA BZ 803. Lin Ming. 269 270Removed an extraneous error message for ASL constructs of the form 271Store(LocalX,LocalX) when LocalX is uninitialized. These curious statements 272are seen in many BIOSs and are once again treated as NOOPs and no error is 273emitted when they are encountered. ACPICA BZ 785. 274 275Fixed an extraneous warning message if a _DSM reserved method returns a 276Package object. _DSM can return any type of object, so validation on the 277return type cannot be performed. ACPICA BZ 802. 278 279Example Code and Data Size: These are the sizes for the OS-independent 280acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 281debug version of the code includes the debug output trace mechanism and has a 282much larger code and data size. 283 284 Previous Release: 285 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 286 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 287 Current Release: 288 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 289 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 290 2912) iASL Compiler/Disassembler and Tools: 292 293iASL: Fixed a problem with the use of the Alias operator and Resource 294Templates. The correct alias is now constructed and no error is emitted. 295ACPICA BZ 738. 296 297iASL: Implemented the -I option to specify additional search directories for 298include files. Allows multiple additional search paths for include files. 299Directories are searched in the order specified on the command line (after 300the local directory is searched.) ACPICA BZ 800. 301 302iASL: Fixed a problem where the full pathname for include files was not 303emitted for warnings/errors. This caused the IDE support to not work 304properly. ACPICA BZ 765. 305 306iASL: Implemented the -@ option to specify a Windows-style response file 307containing additional command line options. ACPICA BZ 801. 308 309AcpiExec: Added support to load multiple AML files simultaneously (such as a 310DSDT and multiple SSDTs). Also added support for wildcards within the AML 311pathname. These features allow all machine tables to be easily loaded and 312debugged together. ACPICA BZ 804. 313 314Disassembler: Added missing support for disassembly of HEST table Error Bank 315subtables. 316 317---------------------------------------- 31830 July 2009. Summary of changes for version 20090730: 319 320The ACPI 4.0 implementation for ACPICA is complete with this release. 321 3221) ACPI CA Core Subsystem: 323 324ACPI 4.0: Added header file support for all new and changed ACPI tables. 325Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are new 326for ACPI 4.0, but have previously been supported in ACPICA are: CPEP, BERT, 327EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT. There 328have been some ACPI 4.0 changes to other existing tables. Split the large 329actbl1.h header into the existing actbl2.h header. ACPICA BZ 774. 330 331ACPI 4.0: Implemented predefined name validation for all new names. There are 33231 new names in ACPI 4.0. The predefined validation module was split into two 333files. The new file is namespace/nsrepair.c. ACPICA BZ 770. 334 335Implemented support for so-called "module-level executable code". This is 336executable AML code that exists outside of any control method and is intended 337to be executed at table load time. Although illegal since ACPI 2.0, this type 338of code still exists and is apparently still being created. Blocks of this 339code are now detected and executed as intended. Currently, the code blocks 340must exist under either an If, Else, or While construct; these are the 341typical cases seen in the field. ACPICA BZ 762. Lin Ming. 342 343Implemented an automatic dynamic repair for predefined names that return 344nested Package objects. This applies to predefined names that are defined to 345return a variable-length Package of sub-packages. If the number of sub- 346packages is one, BIOS code is occasionally seen that creates a simple single 347package with no sub-packages. This code attempts to fix the problem by 348wrapping a new package object around the existing package. These methods can 349be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA BZ 350790. 351 352Fixed a regression introduced in 20090625 for the AcpiGetDevices interface. 353The _HID/_CID matching was broken and no longer matched IDs correctly. ACPICA 354BZ 793. 355 356Fixed a problem with AcpiReset where the reset would silently fail if the 357register was one of the protected I/O ports. AcpiReset now bypasses the port 358validation mechanism. This may eventually be driven into the AcpiRead/Write 359interfaces. 360 361Fixed a regression related to the recent update of the AcpiRead/Write 362interfaces. A sleep/suspend could fail if the optional PM2 Control register 363does not exist during an attempt to write the Bus Master Arbitration bit. 364(However, some hosts already delete the code that writes this bit, and the 365code may in fact be obsolete at this date.) ACPICA BZ 799. 366 367Fixed a problem where AcpiTerminate could fault if inadvertently called twice 368in succession. ACPICA BZ 795. 369 370Example Code and Data Size: These are the sizes for the OS-independent 371acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 372debug version of the code includes the debug output trace mechanism and has a 373much larger code and data size. 374 375 Previous Release: 376 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 377 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 378 Current Release: 379 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 380 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 381 3822) iASL Compiler/Disassembler and Tools: 383 384ACPI 4.0: Implemented disassembler support for all new ACPI tables and 385changes to existing tables. ACPICA BZ 775. 386 387---------------------------------------- 38825 June 2009. Summary of changes for version 20090625: 389 390The ACPI 4.0 Specification was released on June 16 and is available at 391www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will 392continue for the next few releases. 393 3941) ACPI CA Core Subsystem: 395 396ACPI 4.0: Implemented interpreter support for the IPMI operation region 397address space. Includes support for bi-directional data buffers and an IPMI 398address space handler (to be installed by an IPMI device driver.) ACPICA BZ 399773. Lin Ming. 400 401ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. Includes 402support in both the header files and the disassembler. 403 404Completed a major update for the AcpiGetObjectInfo external interface. 405Changes include: 406 - Support for variable, unlimited length HID, UID, and CID strings. 407 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, etc.) 408 - Call the _SxW power methods on behalf of a device object. 409 - Determine if a device is a PCI root bridge. 410 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO. 411These changes will require an update to all callers of this interface. See 412the updated ACPICA Programmer Reference for details. One new source file has 413been added - utilities/utids.c. ACPICA BZ 368, 780. 414 415Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit 416transfers. The Value parameter has been extended from 32 bits to 64 bits in 417order to support new ACPI 4.0 tables. These changes will require an update to 418all callers of these interfaces. See the ACPICA Programmer Reference for 419details. ACPICA BZ 768. 420 421Fixed several problems with AcpiAttachData. The handler was not invoked when 422the host node was deleted. The data sub-object was not automatically deleted 423when the host node was deleted. The interface to the handler had an unused 424parameter, this was removed. ACPICA BZ 778. 425 426Enhanced the function that dumps ACPI table headers. All non-printable 427characters in the string fields are now replaced with '?' (Signature, OemId, 428OemTableId, and CompilerId.) ACPI tables with non-printable characters in 429these fields are occasionally seen in the field. ACPICA BZ 788. 430 431Fixed a problem with predefined method repair code where the code that 432attempts to repair/convert an object of incorrect type is only executed on 433the first time the predefined method is called. The mechanism that disables 434warnings on subsequent calls was interfering with the repair mechanism. 435ACPICA BZ 781. 436 437Fixed a possible memory leak in the predefined validation/repair code when a 438buffer is automatically converted to an expected string object. 439 440Removed obsolete 16-bit files from the distribution and from the current git 441tree head. ACPICA BZ 776. 442 443Example Code and Data Size: These are the sizes for the OS-independent 444acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 445debug version of the code includes the debug output trace mechanism and has a 446much larger code and data size. 447 448 Previous Release: 449 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 450 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 451 Current Release: 452 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 453 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 454 4552) iASL Compiler/Disassembler and Tools: 456 457ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI 458operation region keyword. ACPICA BZ 771, 772. Lin Ming. 459 460ACPI 4.0: iASL - implemented compile-time validation support for all new 461predefined names and control methods (31 total). ACPICA BZ 769. 462 463---------------------------------------- 46421 May 2009. Summary of changes for version 20090521: 465 4661) ACPI CA Core Subsystem: 467 468Disabled the preservation of the SCI enable bit in the PM1 control register. 469The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification to be 470a "preserved" bit - "OSPM always preserves this bit position", section 4714.7.3.2.1. However, some machines fail if this bit is in fact preserved 472because the bit needs to be explicitly set by the OS as a workaround. No 473machines fail if the bit is not preserved. Therefore, ACPICA no longer 474attempts to preserve this bit. 475 476Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or 477incorrectly formed _PRT package could cause a fault. Added validation to 478ensure that each package element is actually a sub-package. 479 480Implemented a new interface to install or override a single control method, 481AcpiInstallMethod. This interface is useful when debugging in order to repair 482an existing method or to install a missing method without having to override 483the entire ACPI table. See the ACPICA Programmer Reference for use and 484examples. Lin Ming, Bob Moore. 485 486Fixed several reference count issues with the DdbHandle object that is 487created from a Load or LoadTable operator. Prevent premature deletion of the 488object. Also, mark the object as invalid once the table has been unloaded. 489This is needed because the handle itself may not be deleted after the table 490unload, depending on whether it has been stored in a named object by the 491caller. Lin Ming. 492 493Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple 494mutexes of the same sync level are acquired but then not released in strict 495opposite order, the internally maintained Current Sync Level becomes confused 496and can cause subsequent execution errors. ACPICA BZ 471. 497 498Changed the allowable release order for ASL mutex objects. The ACPI 4.0 499specification has been changed to make the SyncLevel for mutex objects more 500useful. When releasing a mutex, the SyncLevel of the mutex must now be the 501same as the current sync level. This makes more sense than the previous rule 502(SyncLevel less than or equal). This change updates the code to match the 503specification. 504 505Fixed a problem with the local version of the AcpiOsPurgeCache function. The 506(local) cache must be locked during all cache object deletions. Andrew 507Baumann. 508 509Updated the Load operator to use operation region interfaces. This replaces 510direct memory mapping with region access calls. Now, all region accesses go 511through the installed region handler as they should. 512 513Simplified and optimized the NsGetNextNode function. Reduced parameter count 514and reduced code for this frequently used function. 515 516Example Code and Data Size: These are the sizes for the OS-independent 517acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 518debug version of the code includes the debug output trace mechanism and has a 519much larger code and data size. 520 521 Previous Release: 522 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 523 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 524 Current Release: 525 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 526 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 527 5282) iASL Compiler/Disassembler and Tools: 529 530Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some problems 531with sub-table disassembly and handling invalid sub-tables. Attempt recovery 532after an invalid sub-table ID. 533 534---------------------------------------- 53522 April 2009. Summary of changes for version 20090422: 536 5371) ACPI CA Core Subsystem: 538 539Fixed a compatibility issue with the recently released I/O port protection 540mechanism. For windows compatibility, 1) On a port protection violation, 541simply ignore the request and do not return an exception (allow the control 542method to continue execution.) 2) If only part of the request overlaps a 543protected port, read/write the individual ports that are not protected. Linux 544BZ 13036. Lin Ming 545 546Enhanced the execution of the ASL/AML BreakPoint operator so that it actually 547breaks into the AML debugger if the debugger is present. This matches the 548ACPI-defined behavior. 549 550Fixed several possible warnings related to the use of the configurable 551ACPI_THREAD_ID. This type can now be configured as either an integer or a 552pointer with no warnings. Also fixes several warnings in printf-like 553statements for the 64-bit build when the type is configured as a pointer. 554ACPICA BZ 766, 767. 555 556Fixed a number of possible warnings when compiling with gcc 4+ (depending on 557warning options.) Examples include printf formats, aliasing, unused globals, 558missing prototypes, missing switch default statements, use of non-ANSI 559library functions, use of non-ANSI constructs. See generate/unix/Makefile for 560a list of warning options used with gcc 3 and 4. ACPICA BZ 735. 561 562Example Code and Data Size: These are the sizes for the OS-independent 563acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 564debug version of the code includes the debug output trace mechanism and has a 565much larger code and data size. 566 567 Previous Release: 568 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 569 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 570 Current Release: 571 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 572 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 573 5742) iASL Compiler/Disassembler and Tools: 575 576iASL: Fixed a generation warning from Bison 2.3 and fixed several warnings on 577the 64-bit build. 578 579iASL: Fixed a problem where the Unix/Linux versions of the compiler could not 580correctly digest Windows/DOS formatted files (with CR/LF). 581 582iASL: Added a new option for "quiet mode" (-va) that produces only the 583compilation summary, not individual errors and warnings. Useful for large 584batch compilations. 585 586AcpiExec: Implemented a new option (-z) to enable a forced semaphore/mutex 587timeout that can be used to detect hang conditions during execution of AML 588code (includes both internal semaphores and AML-defined mutexes and events.) 589 590Added new makefiles for the generation of acpica in a generic unix-like 591environment. These makefiles are intended to generate the acpica tools and 592utilities from the original acpica git source tree structure. 593 594Test Suites: Updated and cleaned up the documentation files. Updated the 595copyrights to 2009, affecting all source files. Use the new version of iASL 596with quiet mode. Increased the number of available semaphores in the Windows 597OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, added 598an alternate implementation of the semaphore timeout to allow aslts to 599execute fully on Cygwin. 600 601---------------------------------------- 60220 March 2009. Summary of changes for version 20090320: 603 6041) ACPI CA Core Subsystem: 605 606Fixed a possible race condition between AcpiWalkNamespace and dynamic table 607unloads. Added a reader/writer locking mechanism to allow multiple concurrent 608namespace walks (readers), but block a dynamic table unload until it can gain 609exclusive write access to the namespace. This fixes a problem where a table 610unload could (possibly catastrophically) delete the portion of the namespace 611that is currently being examined by a walk. Adds a new file, utlock.c, that 612implements the reader/writer lock mechanism. ACPICA BZ 749. 613 614Fixed a regression introduced in version 20090220 where a change to the FADT 615handling could cause the ACPICA subsystem to access non-existent I/O ports. 616 617Modified the handling of FADT register and table (FACS/DSDT) addresses. The 618FADT can contain both 32-bit and 64-bit versions of these addresses. 619Previously, the 64-bit versions were favored, meaning that if both 32 and 64 620versions were valid, but not equal, the 64-bit version was used. This was 621found to cause some machines to fail. Now, in this case, the 32-bit version 622is used instead. This now matches the Windows behavior. 623 624Implemented a new mechanism to protect certain I/O ports. Provides Microsoft 625compatibility and protects the standard PC I/O ports from access via AML 626code. Adds a new file, hwvalid.c 627 628Fixed a possible extraneous warning message from the FADT support. The 629message warns of a 32/64 length mismatch between the legacy and GAS 630definitions for a register. 631 632Removed the obsolete AcpiOsValidateAddress OSL interface. This interface is 633made obsolete by the port protection mechanism above. It was previously used 634to validate the entire address range of an operation region, which could be 635incorrect if the range included illegal ports, but fields within the 636operation region did not actually access those ports. Validation is now 637performed on a per-field basis instead of the entire region. 638 639Modified the handling of the PM1 Status Register ignored bit (bit 11.) 640Ignored bits must be "preserved" according to the ACPI spec. Usually, this 641means a read/modify/write when writing to the register. However, for status 642registers, writing a one means clear the event. Writing a zero means preserve 643the event (do not clear.) This behavior is clarified in the ACPI 4.0 spec, 644and the ACPICA code now simply always writes a zero to the ignored bit. 645 646Modified the handling of ignored bits for the PM1 A/B Control Registers. As 647per the ACPI specification, for the control registers, preserve 648(read/modify/write) all bits that are defined as either reserved or ignored. 649 650Updated the handling of write-only bits in the PM1 A/B Control Registers. 651When reading the register, zero the write-only bits as per the ACPI spec. 652ACPICA BZ 443. Lin Ming. 653 654Removed "Linux" from the list of supported _OSI strings. Linux no longer 655wants to reply true to this request. The Windows strings are the only paths 656through the AML that are tested and known to work properly. 657 658 Previous Release: 659 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 660 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 661 Current Release: 662 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 663 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 664 6652) iASL Compiler/Disassembler and Tools: 666 667Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c and 668aetables.c 669 670---------------------------------------- 67120 February 2009. Summary of changes for version 20090220: 672 6731) ACPI CA Core Subsystem: 674 675Optimized the ACPI register locking. Removed locking for reads from the ACPI 676bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock is 677not required when reading the single-bit registers. The 678AcpiGetRegisterUnlocked function is no longer needed and has been removed. 679This will improve performance for reads on these registers. ACPICA BZ 760. 680 681Fixed the parameter validation for AcpiRead/Write. Now return 682AE_BAD_PARAMETER if the input register pointer is null, and AE_BAD_ADDRESS if 683the register has an address of zero. Previously, these cases simply returned 684AE_OK. For optional registers such as PM1B status/enable/control, the caller 685should check for a valid register address before calling. ACPICA BZ 748. 686 687Renamed the external ACPI bit register access functions. Renamed 688AcpiGetRegister and AcpiSetRegister to clarify the purpose of these 689functions. The new names are AcpiReadBitRegister and AcpiWriteBitRegister. 690Also, restructured the code for these functions by simplifying the code path 691and condensing duplicate code to reduce code size. 692 693Added new functions to transparently handle the possibly split PM1 A/B 694registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two functions 695now handle the split registers for PM1 Status, Enable, and Control. ACPICA BZ 696746. 697 698Added a function to handle the PM1 control registers, AcpiHwWritePm1Control. 699This function writes both of the PM1 control registers (A/B). These registers 700are different than the PM1 A/B status and enable registers in that different 701values can be written to the A/B registers. Most notably, the SLP_TYP bits 702can be different, as per the values returned from the _Sx predefined methods. 703 704Removed an extra register write within AcpiHwClearAcpiStatus. This function 705was writing an optional PM1B status register twice. The existing call to the 706low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 A/B 707register. ACPICA BZ 751. 708 709Split out the PM1 Status registers from the FADT. Added new globals for these 710registers (A/B), similar to the way the PM1 Enable registers are handled. 711Instead of overloading the FADT Event Register blocks. This makes the code 712clearer and less prone to error. 713 714Fixed the warning message for when the platform contains too many ACPI tables 715for the default size of the global root table data structure. The calculation 716for the truncation value was incorrect. 717 718Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this 719obsolete macro, since it is now a simple reference to ->common.type. There 720were about 150 invocations of the macro across 41 files. ACPICA BZ 755. 721 722Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as 723TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to 724simply SLEEP_TYPE. ACPICA BZ 754. 725 726Conditionally compile the AcpiSetFirmwareWakingVector64 function. This 727function is only needed on 64-bit host operating systems and is thus not 728included for 32-bit hosts. 729 730Debug output: print the input and result for invocations of the _OSI reserved 731control method via the ACPI_LV_INFO debug level. Also, reduced some of the 732verbosity of this debug level. Len Brown. 733 734Example Code and Data Size: These are the sizes for the OS-independent 735acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 736debug version of the code includes the debug output trace mechanism and has a 737much larger code and data size. 738 739 Previous Release: 740 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 741 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 742 Current Release: 743 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 744 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 745 7462) iASL Compiler/Disassembler and Tools: 747 748Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the 749various legal performance profiles. 750 751---------------------------------------- 75223 January 2009. Summary of changes for version 20090123: 753 7541) ACPI CA Core Subsystem: 755 756Added the 2009 copyright to all module headers and signons. This affects 757virtually every file in the ACPICA core subsystem, the iASL compiler, and 758the tools/utilities. 759 760Implemented a change to allow the host to override any ACPI table, including 761dynamically loaded tables. Previously, only the DSDT could be replaced by the 762host. With this change, the AcpiOsTableOverride interface is called for each 763table found in the RSDT/XSDT during ACPICA initialization, and also whenever 764a table is dynamically loaded via the AML Load operator. 765 766Updated FADT flag definitions, especially the Boot Architecture flags. 767 768Debugger: For the Find command, automatically pad the input ACPI name with 769underscores if the name is shorter than 4 characters. This enables a match 770with the actual namespace entry which is itself padded with underscores. 771 772Example Code and Data Size: These are the sizes for the OS-independent 773acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 774debug version of the code includes the debug output trace mechanism and has a 775much larger code and data size. 776 777 Previous Release: 778 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 779 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 780 Current Release: 781 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 782 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 783 7842) iASL Compiler/Disassembler and Tools: 785 786Fix build error under Bison-2.4. 787 788Dissasembler: Enhanced FADT support. Added decoding of the Boot Architecture 789flags. Now decode all flags, regardless of the FADT version. Flag output 790includes the FADT version which first defined each flag. 791 792The iASL -g option now dumps the RSDT to a file (in addition to the FADT and 793DSDT). Windows only. 794 795---------------------------------------- 79604 December 2008. Summary of changes for version 20081204: 797 7981) ACPI CA Core Subsystem: 799 800The ACPICA Programmer Reference has been completely updated and revamped for 801this release. This includes updates to the external interfaces, OSL 802interfaces, the overview sections, and the debugger reference. 803 804Several new ACPICA interfaces have been implemented and documented in the 805programmer reference: 806AcpiReset - Writes the reset value to the FADT-defined reset register. 807AcpiDisableAllGpes - Disable all available GPEs. 808AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs. 809AcpiGetGpeDevice - Get the GPE block device associated with a GPE. 810AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs. 811AcpiRead - Low-level read ACPI register (was HwLowLevelRead.) 812AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.) 813 814Most of the public ACPI hardware-related interfaces have been moved to a new 815file, components/hardware/hwxface.c 816 817Enhanced the FADT parsing and low-level ACPI register access: The ACPI 818register lengths within the FADT are now used, and the low level ACPI 819register access no longer hardcodes the ACPI register lengths. Given that 820there may be some risk in actually trusting the FADT register lengths, a run- 821time option was added to fall back to the default hardcoded lengths if the 822FADT proves to contain incorrect values - UseDefaultRegisterWidths. This 823option is set to true for now, and a warning is issued if a suspicious FADT 824register length is overridden with the default value. 825 826Fixed a reference count issue in NsRepairObject. This problem was introduced 827in version 20081031 as part of a fix to repair Buffer objects within 828Packages. Lin Ming. 829 830Added semaphore support to the Linux/Unix application OS-services layer 831(OSL). ACPICA BZ 448. Lin Ming. 832 833Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes will 834be implemented in the OSL, or will binary semaphores be used instead. 835 836Example Code and Data Size: These are the sizes for the OS-independent 837acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 838debug version of the code includes the debug output trace mechanism and has a 839much larger code and data size. 840 841 Previous Release: 842 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 843 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 844 Current Release: 845 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 846 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 847 8482) iASL Compiler/Disassembler and Tools: 849 850iASL: Completed the '-e' option to include additional ACPI tables in order to 851aid with disassembly and External statement generation. ACPICA BZ 742. Lin 852Ming. 853 854iASL: Removed the "named object in while loop" error. The compiler cannot 855determine how many times a loop will execute. ACPICA BZ 730. 856 857Disassembler: Implemented support for FADT revision 2 (MS extension). ACPICA 858BZ 743. 859 860Disassembler: Updates for several ACPI data tables (HEST, EINJ, and MCFG). 861 862---------------------------------------- 86331 October 2008. Summary of changes for version 20081031: 864 8651) ACPI CA Core Subsystem: 866 867Restructured the ACPICA header files into public/private. acpi.h now includes 868only the "public" acpica headers. All other acpica headers are "private" and 869should not be included by acpica users. One new file, accommon.h is used to 870include the commonly used private headers for acpica code generation. Future 871plans include moving all private headers to a new subdirectory. 872 873Implemented an automatic Buffer->String return value conversion for 874predefined ACPI methods. For these methods (such as _BIF), added automatic 875conversion for return objects that are required to be a String, but a Buffer 876was found instead. This can happen when reading string battery data from an 877operation region, because it used to be difficult to convert the data from 878buffer to string from within the ASL. Ensures that the host OS is provided 879with a valid null-terminated string. Linux BZ 11822. 880 881Updated the FACS waking vector interfaces. Split AcpiSetFirmwareWakingVector 882into two: one for the 32-bit vector, another for the 64-bit vector. This is 883required because the host OS must setup the wake much differently for each 884vector (real vs. protected mode, etc.) and the interface itself should not be 885deciding which vector to use. Also, eliminated the GetFirmwareWakingVector 886interface, as it served no purpose (only the firmware reads the vector, OS 887only writes the vector.) ACPICA BZ 731. 888 889Implemented a mechanism to escape infinite AML While() loops. Added a loop 890counter to force exit from AML While loops if the count becomes too large. 891This can occur in poorly written AML when the hardware does not respond 892within a while loop and the loop does not implement a timeout. The maximum 893loop count is configurable. A new exception code is returned when a loop is 894broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore. 895 896Optimized the execution of AML While loops. Previously, a control state 897object was allocated and freed for each execution of the loop. The 898optimization is to simply reuse the control state for each iteration. This 899speeds up the raw loop execution time by about 5%. 900 901Enhanced the implicit return mechanism. For Windows compatibility, return an 902implicit integer of value zero for methods that contain no executable code. 903Such methods are seen in the field as stubs (presumably), and can cause 904drivers to fail if they expect a return value. Lin Ming. 905 906Allow multiple backslashes as root prefixes in namepaths. In a fully 907qualified namepath, allow multiple backslash prefixes. This can happen (and 908is seen in the field) because of the use of a double-backslash in strings 909(since backslash is the escape character) causing confusion. ACPICA BZ 739 910Lin Ming. 911 912Emit a warning if two different FACS or DSDT tables are discovered in the 913FADT. Checks if there are two valid but different addresses for the FACS and 914DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.) 915 916Consolidated the method argument count validation code. Merged the code that 917validates control method argument counts into the predefined validation 918module. Eliminates possible multiple warnings for incorrect argument counts. 919 920Implemented ACPICA example code. Includes code for ACPICA initialization, 921handler installation, and calling a control method. Available at 922source/tools/examples. 923 924Added a global pointer for FACS table to simplify internal FACS access. Use 925the global pointer instead of using AcpiGetTableByIndex for each FACS access. 926This simplifies the code for the Global Lock and the Firmware Waking 927Vector(s). 928 929Example Code and Data Size: These are the sizes for the OS-independent 930acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 931debug version of the code includes the debug output trace mechanism and has a 932much larger code and data size. 933 934 Previous Release: 935 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 936 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 937 Current Release: 938 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 939 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 940 9412) iASL Compiler/Disassembler and Tools: 942 943iASL: Improved disassembly of external method calls. Added the -e option to 944allow the inclusion of additional ACPI tables to help with the disassembly of 945method invocations and the generation of external declarations during the 946disassembly. Certain external method invocations cannot be disassembled 947properly without the actual declaration of the method. Use the -e option to 948include the table where the external method(s) are actually declared. Most 949useful for disassembling SSDTs that make method calls back to the master 950DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl -d 951-e dsdt.aml ssdt1.aml 952 953iASL: Fix to allow references to aliases within ASL namepaths. Fixes a 954problem where the use of an alias within a namepath would result in a not 955found error or cause the compiler to fault. Also now allows forward 956references from the Alias operator itself. ACPICA BZ 738. 957 958---------------------------------------- 95926 September 2008. Summary of changes for version 20080926: 960 9611) ACPI CA Core Subsystem: 962 963Designed and implemented a mechanism to validate predefined ACPI methods and 964objects. This code validates the predefined ACPI objects (objects whose names 965start with underscore) that appear in the namespace, at the time they are 966evaluated. The argument count and the type of the returned object are 967validated against the ACPI specification. The purpose of this validation is 968to detect problems with the BIOS-implemented predefined ACPI objects before 969the results are returned to the ACPI-related drivers. Future enhancements may 970include actual repair of incorrect return objects where possible. Two new 971files are nspredef.c and acpredef.h. 972 973Fixed a fault in the AML parser if a memory allocation fails during the Op 974completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492. 975 976Fixed an issue with implicit return compatibility. This change improves the 977implicit return mechanism to be more compatible with the MS interpreter. Lin 978Ming, ACPICA BZ 349. 979 980Implemented support for zero-length buffer-to-string conversions. Allow zero 981length strings during interpreter buffer-to-string conversions. For example, 982during the ToDecimalString and ToHexString operators, as well as implicit 983conversions. Fiodor Suietov, ACPICA BZ 585. 984 985Fixed two possible memory leaks in the error exit paths of 986AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions are 987similar in that they use a stack of state objects in order to eliminate 988recursion. The stack must be fully unwound and deallocated if an error 989occurs. Lin Ming. ACPICA BZ 383. 990 991Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the global 992ACPI register table. This bit does not exist and is unused. Lin Ming, Bob 993Moore ACPICA BZ 442. 994 995Removed the obsolete version number in module headers. Removed the 996"$Revision" number that appeared in each module header. This version number 997was useful under SourceSafe and CVS, but has no meaning under git. It is not 998only incorrect, it could also be misleading. 999 1000Example Code and Data Size: These are the sizes for the OS-independent 1001acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1002debug version of the code includes the debug output trace mechanism and has a 1003much larger code and data size. 1004 1005 Previous Release: 1006 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 1007 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 1008 Current Release: 1009 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 1010 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 1011 1012---------------------------------------- 101329 August 2008. Summary of changes for version 20080829: 1014 10151) ACPI CA Core Subsystem: 1016 1017Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type 1018Reference. Changes include the elimination of cheating on the Object field 1019for the DdbHandle subtype, addition of a reference class field to 1020differentiate the various reference types (instead of an AML opcode), and the 1021cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723 1022 1023Reduce an error to a warning for an incorrect method argument count. 1024Previously aborted with an error if too few arguments were passed to a 1025control method via the external ACPICA interface. Now issue a warning instead 1026and continue. Handles the case where the method inadvertently declares too 1027many arguments, but does not actually use the extra ones. Applies mainly to 1028the predefined methods. Lin Ming. Linux BZ 11032. 1029 1030Disallow the evaluation of named object types with no intrinsic value. Return 1031AE_TYPE for objects that have no value and therefore evaluation is undefined: 1032Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation of 1033these types were allowed, but an exception would be generated at some point 1034during the evaluation. Now, the error is generated up front. 1035 1036Fixed a possible memory leak in the AcpiNsGetExternalPathname function 1037(nsnames.c). Fixes a leak in the error exit path. 1038 1039Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These debug 1040levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and ACPI_EXCEPTION 1041interfaces. Also added ACPI_DB_EVENTS to correspond with the existing 1042ACPI_LV_EVENTS. 1043 1044Removed obsolete and/or unused exception codes from the acexcep.h header. 1045There is the possibility that certain device drivers may be affected if they 1046use any of these exceptions. 1047 1048The ACPICA documentation has been added to the public git source tree, under 1049acpica/documents. Included are the ACPICA programmer reference, the iASL 1050compiler reference, and the changes.txt release logfile. 1051 1052Example Code and Data Size: These are the sizes for the OS-independent 1053acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1054debug version of the code includes the debug output trace mechanism and has a 1055much larger code and data size. 1056 1057 Previous Release: 1058 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 1059 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 1060 Current Release: 1061 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 1062 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 1063 10642) iASL Compiler/Disassembler and Tools: 1065 1066Allow multiple argument counts for the predefined _SCP method. ACPI 3.0 1067defines _SCP with 3 arguments. Previous versions defined it with only 1 1068argument. iASL now allows both definitions. 1069 1070iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for zero- 1071length subtables when disassembling ACPI tables. Also fixed a couple of 1072errors where a full 16-bit table type field was not extracted from the input 1073properly. 1074 1075acpisrc: Improve comment counting mechanism for generating source code 1076statistics. Count first and last lines of multi-line comments as whitespace, 1077not comment lines. Handle Linux legal header in addition to standard acpica 1078header. 1079 1080---------------------------------------- 1081 108229 July 2008. Summary of changes for version 20080729: 1083 10841) ACPI CA Core Subsystem: 1085 1086Fix a possible deadlock in the GPE dispatch. Remove call to 1087AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will attempt 1088to acquire the GPE lock but can deadlock since the GPE lock is already held 1089at dispatch time. This code was introduced in version 20060831 as a response 1090to Linux BZ 6881 and has since been removed from Linux. 1091 1092Add a function to dereference returned reference objects. Examines the return 1093object from a call to AcpiEvaluateObject. Any Index or RefOf references are 1094automatically dereferenced in an attempt to return something useful (these 1095reference types cannot be converted into an external ACPI_OBJECT.) Provides 1096MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105 1097 1098x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new 1099subtables for the MADT and one new subtable for the SRAT. Includes 1100disassembler and AcpiSrc support. Data from the Intel 64 Architecture x2APIC 1101Specification, June 2008. 1102 1103Additional error checking for pathname utilities. Add error check after all 1104calls to AcpiNsGetPathnameLength. Add status return from 1105AcpiNsBuildExternalPath and check after all calls. Add parameter validation 1106to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar. 1107 1108Return status from the global init function AcpiUtGlobalInitialize. This is 1109used by both the kernel subsystem and the utilities such as iASL compiler. 1110The function could possibly fail when the caches are initialized. Yang Yi. 1111 1112Add a function to decode reference object types to strings. Created for 1113improved error messages. 1114 1115Improve object conversion error messages. Better error messages during object 1116conversion from internal to the external ACPI_OBJECT. Used for external calls 1117to AcpiEvaluateObject. 1118 1119Example Code and Data Size: These are the sizes for the OS-independent 1120acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1121debug version of the code includes the debug output trace mechanism and has a 1122much larger code and data size. 1123 1124 Previous Release: 1125 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 1126 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 1127 Current Release: 1128 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 1129 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 1130 11312) iASL Compiler/Disassembler and Tools: 1132 1133Debugger: fix a possible hang when evaluating non-methods. Fixes a problem 1134introduced in version 20080701. If the object being evaluated (via execute 1135command) is not a method, the debugger can hang while trying to obtain non- 1136existent parameters. 1137 1138iASL: relax error for using reserved "_T_x" identifiers. These names can 1139appear in a disassembled ASL file if they were emitted by the original 1140compiler. Instead of issuing an error or warning and forcing the user to 1141manually change these names, issue a remark instead. 1142 1143iASL: error if named object created in while loop. Emit an error if any named 1144object is created within a While loop. If allowed, this code will generate a 1145run-time error on the second iteration of the loop when an attempt is made to 1146create the same named object twice. ACPICA bugzilla 730. 1147 1148iASL: Support absolute pathnames for include files. Add support for absolute 1149pathnames within the Include operator. previously, only relative pathnames 1150were supported. 1151 1152iASL: Enforce minimum 1 interrupt in interrupt macro and Resource Descriptor. 1153The ACPI spec requires one interrupt minimum. BZ 423 1154 1155iASL: Handle a missing ResourceSource arg, with a present SourceIndex. 1156Handles the case for the Interrupt Resource Descriptor where 1157the ResourceSource argument is omitted but ResourceSourceIndex 1158is present. Now leave room for the Index. BZ 426 1159 1160iASL: Prevent error message if CondRefOf target does not exist. Fixes cases 1161where an error message is emitted if the target does not exist. BZ 516 1162 1163iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option 1164(get ACPI tables on Windows). This was apparently broken in version 20070919. 1165 1166AcpiXtract: Handle EOF while extracting data. Correctly handle the case where 1167the EOF happens immediately after the last table in the input file. Print 1168completion message. Previously, no message was displayed in this case. 1169 1170---------------------------------------- 117101 July 2008. Summary of changes for version 20080701: 1172 11730) Git source tree / acpica.org 1174 1175Fixed a problem where a git-clone from http would not transfer the entire 1176source tree. 1177 11781) ACPI CA Core Subsystem: 1179 1180Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one 1181enable bit. Now performs a read-change-write of the enable register instead 1182of simply writing out the cached enable mask. This will prevent inadvertent 1183enabling of GPEs if a rogue GPE is received during initialization (before GPE 1184handlers are installed.) 1185 1186Implemented a copy for dynamically loaded tables. Previously, dynamically 1187loaded tables were simply mapped - but on some machines this memory is 1188corrupted after suspend. Now copy the table to a local buffer. For the 1189OpRegion case, added checksum verify. Use the table length from the table 1190header, not the region length. For the Buffer case, use the table length 1191also. Dennis Noordsij, Bob Moore. BZ 10734 1192 1193Fixed a problem where the same ACPI table could not be dynamically loaded and 1194unloaded more than once. Without this change, a table cannot be loaded again 1195once it has been loaded/unloaded one time. The current mechanism does not 1196unregister a table upon an unload. During a load, if the same table is found, 1197this no longer returns an exception. BZ 722 1198 1199Fixed a problem where the wrong descriptor length was calculated for the 1200EndTag descriptor in 64-bit mode. The "minimal" descriptors such as EndTag 1201are calculated as 12 bytes long, but the actual length in the internal 1202descriptor is 16 because of the round-up to 8 on the 64-bit build. Reported 1203by Linn Crosetto. BZ 728 1204 1205Fixed a possible memory leak in the Unload operator. The DdbHandle returned 1206by Load() did not have its reference count decremented during unload, leading 1207to a memory leak. Lin Ming. BZ 727 1208 1209Fixed a possible memory leak when deleting thermal/processor objects. Any 1210associated notify handlers (and objects) were not being deleted. Fiodor 1211Suietov. BZ 506 1212 1213Fixed the ordering of the ASCII names in the global mutex table to match the 1214actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug only. 1215Vegard Nossum. BZ 726 1216 1217Enhanced the AcpiGetObjectInfo interface to return the number of required 1218arguments if the object is a control method. Added this call to the debugger 1219so the proper number of default arguments are passed to a method. This 1220prevents a warning when executing methods from AcpiExec. 1221 1222Added a check for an invalid handle in AcpiGetObjectInfo. Return 1223AE_BAD_PARAMETER if input handle is invalid. BZ 474 1224 1225Fixed an extraneous warning from exconfig.c on the 64-bit build. 1226 1227Example Code and Data Size: These are the sizes for the OS-independent 1228acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1229debug version of the code includes the debug output trace mechanism and has a 1230much larger code and data size. 1231 1232 Previous Release: 1233 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 1234 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 1235 Current Release: 1236 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 1237 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 1238 12392) iASL Compiler/Disassembler and Tools: 1240 1241iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both 1242resource descriptor names. 1243 1244iASL: Detect invalid ASCII characters in input (windows version). Removed the 1245"-CF" flag from the flex compile, enables correct detection of non-ASCII 1246characters in the input. BZ 441 1247 1248iASL: Eliminate warning when result of LoadTable is not used. Eliminate the 1249"result of operation not used" warning when the DDB handle returned from 1250LoadTable is not used. The warning is not needed. BZ 590 1251 1252AcpiExec: Add support for dynamic table load/unload. Now calls _CFG method to 1253pass address of table to the AML. Added option to disable OpRegion simulation 1254to allow creation of an OpRegion with a real address that was passed to _CFG. 1255All of this allows testing of the Load and Unload operators from AcpiExec. 1256 1257Debugger: update tables command for unloaded tables. Handle unloaded tables 1258and use the standard table header output routine. 1259 1260---------------------------------------- 126109 June 2008. Summary of changes for version 20080609: 1262 12631) ACPI CA Core Subsystem: 1264 1265Implemented a workaround for reversed _PRT entries. A significant number of 1266BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This 1267change dynamically detects and repairs this problem. Provides compatibility 1268with MS ACPI. BZ 6859 1269 1270Simplified the internal ACPI hardware interfaces to eliminate the locking 1271flag parameter from Register Read/Write. Added a new external interface, 1272AcpiGetRegisterUnlocked. 1273 1274Fixed a problem where the invocation of a GPE control method could hang. This 1275was a regression introduced in 20080514. The new method argument count 1276validation mechanism can enter an infinite loop when a GPE method is 1277dispatched. Problem fixed by removing the obsolete code that passed GPE block 1278information to the notify handler via the control method parameter pointer. 1279 1280Fixed a problem where the _SST execution status was incorrectly returned to 1281the caller of AcpiEnterSleepStatePrep. This was a regression introduced in 128220080514. _SST is optional and a NOT_FOUND exception should never be 1283returned. BZ 716 1284 1285Fixed a problem where a deleted object could be accessed from within the AML 1286parser. This was a regression introduced in version 20080123 as a fix for the 1287Unload operator. Lin Ming. BZ 10669 1288 1289Cleaned up the debug operand dump mechanism. Eliminated unnecessary operands 1290and eliminated the use of a negative index in a loop. Operands are now 1291displayed in the correct order, not backwards. This also fixes a regression 1292introduced in 20080514 on 64-bit systems where the elimination of 1293ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 715 1294 1295Fixed a possible memory leak in EvPciConfigRegionSetup where the error exit 1296path did not delete a locally allocated structure. 1297 1298Updated definitions for the DMAR and SRAT tables to synchronize with the 1299current specifications. Includes disassembler support. 1300 1301Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect 1302loop termination value was used. Loop terminated on iteration early, missing 1303one mutex. Linn Crosetto 1304 1305Example Code and Data Size: These are the sizes for the OS-independent 1306acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1307debug version of the code includes the debug output trace mechanism and has a 1308much larger code and data size. 1309 1310 Previous Release: 1311 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 1312 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 1313 Current Release: 1314 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 1315 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 1316 13172) iASL Compiler/Disassembler and Tools: 1318 1319Disassembler: Implemented support for EisaId() within _CID objects. Now 1320disassemble integer _CID objects back to EisaId invocations, including 1321multiple integers within _CID packages. Includes single-step support for 1322debugger also. 1323 1324Disassembler: Added support for DMAR and SRAT table definition changes. 1325 1326---------------------------------------- 132714 May 2008. Summary of changes for version 20080514: 1328 13291) ACPI CA Core Subsystem: 1330 1331Fixed a problem where GPEs were enabled too early during the ACPICA 1332initialization. This could lead to "handler not installed" errors on some 1333machines. Moved GPE enable until after _REG/_STA/_INI methods are run. This 1334ensures that all operation regions and devices throughout the namespace have 1335been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916. 1336 1337Implemented a change to the enter sleep code. Moved execution of the _GTS 1338method to just before setting sleep enable bit. The execution was moved from 1339AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed 1340immediately before the SLP_EN bit is set, as per the ACPI specification. 1341Luming Yu, BZ 1653. 1342 1343Implemented a fix to disable unknown GPEs (2nd version). Now always disable 1344the GPE, even if ACPICA thinks that that it is already disabled. It is 1345possible that the AML or some other code has enabled the GPE unbeknownst to 1346the ACPICA code. 1347 1348Fixed a problem with the Field operator where zero-length fields would return 1349an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length ASL 1350field declarations in Field(), BankField(), and IndexField(). BZ 10606. 1351 1352Implemented a fix for the Load operator, now load the table at the namespace 1353root. This reverts a change introduced in version 20071019. The table is now 1354loaded at the namespace root even though this goes against the ACPI 1355specification. This provides compatibility with other ACPI implementations. 1356The ACPI specification will be updated to reflect this in ACPI 4.0. Lin Ming. 1357 1358Fixed a problem where ACPICA would not Load() tables with unusual signatures. 1359Now ignore ACPI table signature for Load() operator. Only "SSDT" is 1360acceptable to the ACPI spec, but tables are seen with OEMx and null sigs. 1361Therefore, signature validation is worthless. Apparently MS ACPI accepts such 1362signatures, ACPICA must be compatible. BZ 10454. 1363 1364Fixed a possible negative array index in AcpiUtValidateException. Added NULL 1365fields to the exception string arrays to eliminate a -1 subtraction on the 1366SubStatus field. 1367 1368Updated the debug tracking macros to reduce overall code and data size. 1369Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings 1370instead of pointers to static strings. Jan Beulich and Bob Moore. 1371 1372Implemented argument count checking in control method invocation via 1373AcpiEvaluateObject. Now emit an error if too few arguments, warning if too 1374many. This applies only to extern programmatic control method execution, not 1375method-to-method calls within the AML. Lin Ming. 1376 1377Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is no 1378longer needed, especially with the removal of 16-bit support. It was replaced 1379mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 bit on 138032/64-bit platforms is required. 1381 1382Added the C const qualifier for appropriate string constants -- mostly 1383MODULE_NAME and printf format strings. Jan Beulich. 1384 1385Example Code and Data Size: These are the sizes for the OS-independent 1386acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1387debug version of the code includes the debug output trace mechanism and has a 1388much larger code and data size. 1389 1390 Previous Release: 1391 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 1392 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 1393 Current Release: 1394 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 1395 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 1396 13972) iASL Compiler/Disassembler and Tools: 1398 1399Implemented ACPI table revision ID validation in the disassembler. Zero is 1400always invalid. For DSDTs, the ID controls the interpreter integer width. 1 1401means 32-bit and this is unusual. 2 or greater is 64-bit. 1402 1403---------------------------------------- 140421 March 2008. Summary of changes for version 20080321: 1405 14061) ACPI CA Core Subsystem: 1407 1408Implemented an additional change to the GPE support in order to suppress 1409spurious or stray GPEs. The AcpiEvDisableGpe function will now permanently 1410disable incoming GPEs that are neither enabled nor disabled -- meaning that 1411the GPE is unknown to the system. This should prevent future interrupt floods 1412from that GPE. BZ 6217 (Zhang Rui) 1413 1414Fixed a problem where NULL package elements were not returned to the 1415AcpiEvaluateObject interface correctly. The element was simply ignored 1416instead of returning a NULL ACPI_OBJECT package element, potentially causing 1417a buffer overflow and/or confusing the caller who expected a fixed number of 1418elements. BZ 10132 (Lin Ming, Bob Moore) 1419 1420Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word, Dword, 1421Qword), Field, BankField, and IndexField operators when invoked from inside 1422an executing control method. In this case, these operators created namespace 1423nodes that were incorrectly left marked as permanent nodes instead of 1424temporary nodes. This could cause a problem if there is race condition 1425between an exiting control method and a running namespace walk. (Reported by 1426Linn Crosetto) 1427 1428Fixed a problem where the CreateField and CreateXXXField operators would 1429incorrectly allow duplicate names (the name of the field) with no exception 1430generated. 1431 1432Implemented several changes for Notify handling. Added support for new Notify 1433values (ACPI 2.0+) and improved the Notify debug output. Notify on 1434PowerResource objects is no longer allowed, as per the ACPI specification. 1435(Bob Moore, Zhang Rui) 1436 1437All Reference Objects returned via the AcpiEvaluateObject interface are now 1438marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved for 1439NULL objects - either NULL package elements or unresolved named references. 1440 1441Fixed a problem where an extraneous debug message was produced for package 1442objects (when debugging enabled). The message "Package List length larger 1443than NumElements count" is now produced in the correct case, and is now an 1444error message rather than a debug message. Added a debug message for the 1445opposite case, where NumElements is larger than the Package List (the package 1446will be padded out with NULL elements as per the ACPI spec.) 1447 1448Implemented several improvements for the output of the ASL "Debug" object to 1449clarify and keep all data for a given object on one output line. 1450 1451Fixed two size calculation issues with the variable-length Start Dependent 1452resource descriptor. 1453 1454Example Code and Data Size: These are the sizes for the OS-independent 1455acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1456debug version of the code includes the debug output trace mechanism and has 1457a much larger code and data size. 1458 1459 Previous Release: 1460 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 1461 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 1462 Current Release: 1463 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 1464 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 1465 14662) iASL Compiler/Disassembler and Tools: 1467 1468Fixed a problem with the use of the Switch operator where execution of the 1469containing method by multiple concurrent threads could cause an 1470AE_ALREADY_EXISTS exception. This is caused by the fact that there is no 1471actual Switch opcode, it must be simulated with local named temporary 1472variables and if/else pairs. The solution chosen was to mark any method that 1473uses Switch as Serialized, thus preventing multiple thread entries. BZ 469. 1474 1475---------------------------------------- 147613 February 2008. Summary of changes for version 20080213: 1477 14781) ACPI CA Core Subsystem: 1479 1480Implemented another MS compatibility design change for GPE/Notify handling. 1481GPEs are now cleared/enabled asynchronously to allow all pending notifies to 1482complete first. It is expected that the OSL will queue the enable request 1483behind all pending notify requests (may require changes to the local host OSL 1484in AcpiOsExecute). Alexey Starikovskiy. 1485 1486Fixed a problem where buffer and package objects passed as arguments to a 1487control method via the external AcpiEvaluateObject interface could cause an 1488AE_AML_INTERNAL exception depending on the order and type of operators 1489executed by the target control method. 1490 1491Fixed a problem where resource descriptor size optimization could cause a 1492problem when a _CRS resource template is passed to a _SRS method. The _SRS 1493resource template must use the same descriptors (with the same size) as 1494returned from _CRS. This change affects the following resource descriptors: 1495IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 9487) 1496 1497Fixed a problem where a CopyObject to RegionField, BankField, and IndexField 1498objects did not perform an implicit conversion as it should. These types must 1499retain their initial type permanently as per the ACPI specification. However, 1500a CopyObject to all other object types should not perform an implicit 1501conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388 1502 1503Fixed a problem with the AcpiGetDevices interface where the mechanism to 1504match device CIDs did not examine the entire list of available CIDs, but 1505instead aborted on the first non-matching CID. Andrew Patterson. 1506 1507Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro was 1508inadvertently changed to return a 16-bit value instead of a 32-bit value, 1509truncating the upper dword of a 64-bit value. This macro is only used to 1510display debug output, so no incorrect calculations were made. Also, 1511reimplemented the macro so that a 64-bit shift is not performed by 1512inefficient compilers. 1513 1514Added missing va_end statements that should correspond with each va_start 1515statement. 1516 1517Example Code and Data Size: These are the sizes for the OS-independent 1518acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1519debug version of the code includes the debug output trace mechanism and has 1520a much larger code and data size. 1521 1522 Previous Release: 1523 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 1524 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 1525 Current Release: 1526 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 1527 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 1528 15292) iASL Compiler/Disassembler and Tools: 1530 1531Implemented full disassembler support for the following new ACPI tables: 1532BERT, EINJ, and ERST. Implemented partial disassembler support for the 1533complicated HEST table. These tables support the Windows Hardware Error 1534Architecture (WHEA). 1535 1536---------------------------------------- 153723 January 2008. Summary of changes for version 20080123: 1538 15391) ACPI CA Core Subsystem: 1540 1541Added the 2008 copyright to all module headers and signons. This affects 1542virtually every file in the ACPICA core subsystem, the iASL compiler, and 1543the tools/utilities. 1544 1545Fixed a problem with the SizeOf operator when used with Package and Buffer 1546objects. These objects have deferred execution for some arguments, and the 1547execution is now completed before the SizeOf is executed. This problem caused 1548unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) BZ 15499558 1550 1551Implemented an enhancement to the interpreter "slack mode". In the absence of 1552an explicit return or an implicitly returned object from the last executed 1553opcode, a control method will now implicitly return an integer of value 0 for 1554Microsoft compatibility. (Lin Ming) BZ 392 1555 1556Fixed a problem with the Load operator where an exception was not returned in 1557the case where the table is already loaded. (Lin Ming) BZ 463 1558 1559Implemented support for the use of DDBHandles as an Indexed Reference, as per 1560the ACPI spec. (Lin Ming) BZ 486 1561 1562Implemented support for UserTerm (Method invocation) for the Unload operator 1563as per the ACPI spec. (Lin Ming) BZ 580 1564 1565Fixed a problem with the LoadTable operator where the OemId and OemTableId 1566input strings could cause unexpected failures if they were shorter than the 1567maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576 1568 1569Implemented support for UserTerm (Method invocation) for the Unload operator 1570as per the ACPI spec. (Lin Ming) BZ 580 1571 1572Implemented header file support for new ACPI tables - BERT, ERST, EINJ, HEST, 1573IBFT, UEFI, WDAT. Disassembler support is forthcoming. 1574 1575Example Code and Data Size: These are the sizes for the OS-independent 1576acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1577debug version of the code includes the debug output trace mechanism and has 1578a much larger code and data size. 1579 1580 Previous Release: 1581 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 1582 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 1583 Current Release: 1584 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 1585 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 1586 15872) iASL Compiler/Disassembler and Tools: 1588 1589Implemented support in the disassembler for checksum validation on incoming 1590binary DSDTs and SSDTs. If incorrect, a message is displayed within the table 1591header dump at the start of the disassembly. 1592 1593Implemented additional debugging information in the namespace listing file 1594created during compilation. In addition to the namespace hierarchy, the full 1595pathname to each namespace object is displayed. 1596 1597Fixed a problem with the disassembler where invalid ACPI tables could cause 1598faults or infinite loops. 1599 1600Fixed an unexpected parse error when using the optional "parameter types" 1601list in a control method declaration. (Lin Ming) BZ 397 1602 1603Fixed a problem where two External declarations with the same name did not 1604cause an error (Lin Ming) BZ 509 1605 1606Implemented support for full TermArgs (adding Argx, Localx and method 1607invocation) for the ParameterData parameter to the LoadTable operator. (Lin 1608Ming) BZ 583,587 1609 1610---------------------------------------- 161119 December 2007. Summary of changes for version 20071219: 1612 16131) ACPI CA Core Subsystem: 1614 1615Implemented full support for deferred execution for the TermArg string 1616arguments for DataTableRegion. This enables forward references and full 1617operand resolution for the three string arguments. Similar to OperationRegion 1618deferred argument execution.) Lin Ming. BZ 430 1619 1620Implemented full argument resolution support for the BankValue argument to 1621BankField. Previously, only constants were supported, now any TermArg may be 1622used. Lin Ming BZ 387, 393 1623 1624Fixed a problem with AcpiGetDevices where the search of a branch of the 1625device tree could be terminated prematurely. In accordance with the ACPI 1626specification, the search down the current branch is terminated if a device 1627is both not present and not functional (instead of just not present.) Yakui 1628Zhao. 1629 1630Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly if 1631the underlying AML code changed the GPE enable registers. Now, any unknown 1632incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately disabled 1633instead of simply ignored. Rui Zhang. 1634 1635Fixed a problem with Index Fields where the Index register was incorrectly 1636limited to a maximum of 32 bits. Now any size may be used. 1637 1638Fixed a couple memory leaks associated with "implicit return" objects when 1639the AML Interpreter slack mode is enabled. Lin Ming BZ 349 1640 1641Example Code and Data Size: These are the sizes for the OS-independent 1642acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1643debug version of the code includes the debug output trace mechanism and has 1644a much larger code and data size. 1645 1646 Previous Release: 1647 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 1648 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 1649 Current Release: 1650 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 1651 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 1652 1653---------------------------------------- 165414 November 2007. Summary of changes for version 20071114: 1655 16561) ACPI CA Core Subsystem: 1657 1658Implemented event counters for each of the Fixed Events, the ACPI SCI 1659(interrupt) itself, and control methods executed. Named 1660AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. These 1661should be useful for debugging and statistics. 1662 1663Implemented a new external interface, AcpiGetStatistics, to retrieve the 1664contents of the various event counters. Returns the current values for 1665AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and 1666AcpiMethodCount. The interface can be expanded in the future if new counters 1667are added. Device drivers should use this interface rather than access the 1668counters directly. 1669 1670Fixed a problem with the FromBCD and ToBCD operators. With some compilers, 1671the ShortDivide function worked incorrectly, causing problems with the BCD 1672functions with large input values. A truncation from 64-bit to 32-bit 1673inadvertently occurred. Internal BZ 435. Lin Ming 1674 1675Fixed a problem with Index references passed as method arguments. References 1676passed as arguments to control methods were dereferenced immediately (before 1677control was passed to the called method). The references are now correctly 1678passed directly to the called method. BZ 5389. Lin Ming 1679 1680Fixed a problem with CopyObject used in conjunction with the Index operator. 1681The reference was incorrectly dereferenced before the copy. The reference is 1682now correctly copied. BZ 5391. Lin Ming 1683 1684Fixed a problem with Control Method references within Package objects. These 1685references are now correctly generated. This completes the package 1686construction overhaul that began in version 20071019. 1687 1688Example Code and Data Size: These are the sizes for the OS-independent 1689acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1690debug version of the code includes the debug output trace mechanism and has 1691a much larger code and data size. 1692 1693 Previous Release: 1694 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 1695 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 1696 Current Release: 1697 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 1698 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 1699 1700 17012) iASL Compiler/Disassembler and Tools: 1702 1703The AcpiExec utility now installs handlers for all of the predefined 1704Operation Region types. New types supported are: PCI_Config, CMOS, and 1705PCIBARTarget. 1706 1707Fixed a problem with the 64-bit version of AcpiExec where the extended (64- 1708bit) address fields for the DSDT and FACS within the FADT were not being 1709used, causing truncation of the upper 32-bits of these addresses. Lin Ming 1710and Bob Moore 1711 1712---------------------------------------- 171319 October 2007. Summary of changes for version 20071019: 1714 17151) ACPI CA Core Subsystem: 1716 1717Fixed a problem with the Alias operator when the target of the alias is a 1718named ASL operator that opens a new scope -- Scope, Device, PowerResource, 1719Processor, and ThermalZone. In these cases, any children of the original 1720operator could not be accessed via the alias, potentially causing unexpected 1721AE_NOT_FOUND exceptions. (BZ 9067) 1722 1723Fixed a problem with the Package operator where all named references were 1724created as object references and left otherwise unresolved. According to the 1725ACPI specification, a Package can only contain Data Objects or references to 1726control methods. The implication is that named references to Data Objects 1727(Integer, Buffer, String, Package, BufferField, Field) should be resolved 1728immediately upon package creation. This is the approach taken with this 1729change. References to all other named objects (Methods, Devices, Scopes, 1730etc.) are all now properly created as reference objects. (BZ 5328) 1731 1732Reverted a change to Notify handling that was introduced in version 173320070508. This version changed the Notify handling from asynchronous to 1734fully synchronous (Device driver Notify handling with respect to the Notify 1735ASL operator). It was found that this change caused more problems than it 1736solved and was removed by most users. 1737 1738Fixed a problem with the Increment and Decrement operators where the type of 1739the target object could be unexpectedly and incorrectly changed. (BZ 353) 1740Lin Ming. 1741 1742Fixed a problem with the Load and LoadTable operators where the table 1743location within the namespace was ignored. Instead, the table was always 1744loaded into the root or current scope. Lin Ming. 1745 1746Fixed a problem with the Load operator when loading a table from a buffer 1747object. The input buffer was prematurely zeroed and/or deleted. (BZ 577) 1748 1749Fixed a problem with the Debug object where a store of a DdbHandle reference 1750object to the Debug object could cause a fault. 1751 1752Added a table checksum verification for the Load operator, in the case where 1753the load is from a buffer. (BZ 578). 1754 1755Implemented additional parameter validation for the LoadTable operator. The 1756length of the input strings SignatureString, OemIdString, and OemTableId are 1757now checked for maximum lengths. (BZ 582) Lin Ming. 1758 1759Example Code and Data Size: These are the sizes for the OS-independent 1760acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1761debug version of the code includes the debug output trace mechanism and has 1762a much larger code and data size. 1763 1764 Previous Release: 1765 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 1766 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 1767 Current Release: 1768 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 1769 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 1770 1771 17722) iASL Compiler/Disassembler: 1773 1774Fixed a problem where if a single file was specified and the file did not 1775exist, no error message was emitted. (Introduced with wildcard support in 1776version 20070917.) 1777 1778---------------------------------------- 177919 September 2007. Summary of changes for version 20070919: 1780 17811) ACPI CA Core Subsystem: 1782 1783Designed and implemented new external interfaces to install and remove 1784handlers for ACPI table-related events. Current events that are defined are 1785LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as 1786they are dynamically loaded and unloaded. See AcpiInstallTableHandler and 1787AcpiRemoveTableHandler. (Lin Ming and Bob Moore) 1788 1789Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag 1790(acpi_serialized option on Linux) could cause some systems to hang during 1791initialization. (Bob Moore) BZ 8171 1792 1793Fixed a problem where objects of certain types (Device, ThermalZone, 1794Processor, PowerResource) can be not found if they are declared and 1795referenced from within the same control method (Lin Ming) BZ 341 1796 1797Example Code and Data Size: These are the sizes for the OS-independent 1798acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1799debug version of the code includes the debug output trace mechanism and has 1800a much larger code and data size. 1801 1802 Previous Release: 1803 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 1804 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 1805 Current Release: 1806 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 1807 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 1808 1809 18102) iASL Compiler/Disassembler: 1811 1812Implemented support to allow multiple files to be compiled/disassembled in a 1813single invocation. This includes command line wildcard support for both the 1814Windows and Unix versions of the compiler. This feature simplifies the 1815disassembly and compilation of multiple ACPI tables in a single directory. 1816 1817---------------------------------------- 181808 May 2007. Summary of changes for version 20070508: 1819 18201) ACPI CA Core Subsystem: 1821 1822Implemented a Microsoft compatibility design change for the handling of the 1823Notify AML operator. Previously, notify handlers were dispatched and 1824executed completely asynchronously in a deferred thread. The new design 1825still executes the notify handlers in a different thread, but the original 1826thread that executed the Notify() now waits at a synchronization point for 1827the notify handler to complete. Some machines depend on a synchronous Notify 1828operator in order to operate correctly. 1829 1830Implemented support to allow Package objects to be passed as method 1831arguments to the external AcpiEvaluateObject interface. Previously, this 1832would return the AE_NOT_IMPLEMENTED exception. This feature had not been 1833implemented since there were no reserved control methods that required it 1834until recently. 1835 1836Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs that 1837contained invalid non-zero values in reserved fields could cause later 1838failures because these fields have meaning in later revisions of the FADT. 1839For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The fields 1840are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.) 1841 1842Fixed a problem where the Global Lock handle was not properly updated if a 1843thread that acquired the Global Lock via executing AML code then attempted 1844to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by Joe 1845Liu. 1846 1847Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list 1848could be corrupted if the interrupt being removed was at the head of the 1849list. Reported by Linn Crosetto. 1850 1851Example Code and Data Size: These are the sizes for the OS-independent 1852acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1853debug version of the code includes the debug output trace mechanism and has 1854a much larger code and data size. 1855 1856 Previous Release: 1857 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 1858 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 1859 Current Release: 1860 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 1861 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 1862 1863---------------------------------------- 186420 March 2007. Summary of changes for version 20070320: 1865 18661) ACPI CA Core Subsystem: 1867 1868Implemented a change to the order of interpretation and evaluation of AML 1869operand objects within the AML interpreter. The interpreter now evaluates 1870operands in the order that they appear in the AML stream (and the 1871corresponding ASL code), instead of in the reverse order (after the entire 1872operand list has been parsed). The previous behavior caused several subtle 1873incompatibilities with the Microsoft AML interpreter as well as being 1874somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov. 1875 1876Implemented a change to the ACPI Global Lock support. All interfaces to the 1877global lock now allow the same thread to acquire the lock multiple times. 1878This affects the AcpiAcquireGlobalLock external interface to the global lock 1879as well as the internal use of the global lock to support AML fields -- a 1880control method that is holding the global lock can now simultaneously access 1881AML fields that require global lock protection. Previously, in both cases, 1882this would have resulted in an AE_ALREADY_ACQUIRED exception. The change to 1883AcpiAcquireGlobalLock is of special interest to drivers for the Embedded 1884Controller. There is no change to the behavior of the AML Acquire operator, 1885as this can already be used to acquire a mutex multiple times by the same 1886thread. BZ 8066. With assistance from Alexey Starikovskiy. 1887 1888Fixed a problem where invalid objects could be referenced in the AML 1889Interpreter after error conditions. During operand evaluation, ensure that 1890the internal "Return Object" field is cleared on error and only valid 1891pointers are stored there. Caused occasional access to deleted objects that 1892resulted in "large reference count" warning messages. Valery Podrezov. 1893 1894Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur on 1895deeply nested control method invocations. BZ 7873, local BZ 487. Valery 1896Podrezov. 1897 1898Fixed an internal problem with the handling of result objects on the 1899interpreter result stack. BZ 7872. Valery Podrezov. 1900 1901Removed obsolete code that handled the case where AML_NAME_OP is the target 1902of a reference (Reference.Opcode). This code was no longer necessary. BZ 19037874. Valery Podrezov. 1904 1905Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This was a 1906remnant from the previously discontinued 16-bit support. 1907 1908Example Code and Data Size: These are the sizes for the OS-independent 1909acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1910debug version of the code includes the debug output trace mechanism and has 1911a much larger code and data size. 1912 1913 Previous Release: 1914 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 1915 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 1916 Current Release: 1917 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 1918 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 1919 1920---------------------------------------- 192126 January 2007. Summary of changes for version 20070126: 1922 19231) ACPI CA Core Subsystem: 1924 1925Added the 2007 copyright to all module headers and signons. This affects 1926virtually every file in the ACPICA core subsystem, the iASL compiler, and 1927the utilities. 1928 1929Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable 1930during a table load. A bad pointer was passed in the case where the DSDT is 1931overridden, causing a fault in this case. 1932 1933Example Code and Data Size: These are the sizes for the OS-independent 1934acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1935debug version of the code includes the debug output trace mechanism and has 1936a much larger code and data size. 1937 1938 Previous Release: 1939 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 1940 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 1941 Current Release: 1942 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 1943 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 1944 1945---------------------------------------- 194615 December 2006. Summary of changes for version 20061215: 1947 19481) ACPI CA Core Subsystem: 1949 1950Support for 16-bit ACPICA has been completely removed since it is no longer 1951necessary and it clutters the code. All 16-bit macros, types, and 1952conditional compiles have been removed, cleaning up and simplifying the code 1953across the entire subsystem. DOS support is no longer needed since the 1954bootable Linux firmware kit is now available. 1955 1956The handler for the Global Lock is now removed during AcpiTerminate to 1957enable a clean subsystem restart, via the implementation of the 1958AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz, 1959HP) 1960 1961Implemented enhancements to the multithreading support within the debugger 1962to enable improved multithreading debugging and evaluation of the subsystem. 1963(Valery Podrezov) 1964 1965Debugger: Enhanced the Statistics/Memory command to emit the total (maximum) 1966memory used during the execution, as well as the maximum memory consumed by 1967each of the various object types. (Valery Podrezov) 1968 1969Example Code and Data Size: These are the sizes for the OS-independent 1970acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1971debug version of the code includes the debug output trace mechanism and has 1972a much larger code and data size. 1973 1974 Previous Release: 1975 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 1976 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 1977 Current Release: 1978 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 1979 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 1980 1981 19822) iASL Compiler/Disassembler and Tools: 1983 1984AcpiExec: Implemented a new option (-m) to display full memory use 1985statistics upon subsystem/program termination. (Valery Podrezov) 1986 1987---------------------------------------- 198809 November 2006. Summary of changes for version 20061109: 1989 19901) ACPI CA Core Subsystem: 1991 1992Optimized the Load ASL operator in the case where the source operand is an 1993operation region. Simply map the operation region memory, instead of 1994performing a bytewise read. (Region must be of type SystemMemory, see 1995below.) 1996 1997Fixed the Load ASL operator for the case where the source operand is a 1998region field. A buffer object is also allowed as the source operand. BZ 480 1999 2000Fixed a problem where the Load ASL operator allowed the source operand to be 2001an operation region of any type. It is now restricted to regions of type 2002SystemMemory, as per the ACPI specification. BZ 481 2003 2004Additional cleanup and optimizations for the new Table Manager code. 2005 2006AcpiEnable will now fail if all of the required ACPI tables are not loaded 2007(FADT, FACS, DSDT). BZ 477 2008 2009Added #pragma pack(8/4) to acobject.h to ensure that the structures in this 2010header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been 2011manually optimized to be aligned and will not work if it is byte-packed. 2012 2013Example Code and Data Size: These are the sizes for the OS-independent 2014acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2015debug version of the code includes the debug output trace mechanism and has 2016a much larger code and data size. 2017 2018 Previous Release: 2019 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 2020 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 2021 Current Release: 2022 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 2023 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 2024 2025 20262) iASL Compiler/Disassembler and Tools: 2027 2028Fixed a problem where the presence of the _OSI predefined control method 2029within complex expressions could cause an internal compiler error. 2030 2031AcpiExec: Implemented full region support for multiple address spaces. 2032SpaceId is now part of the REGION object. BZ 429 2033 2034---------------------------------------- 203511 October 2006. Summary of changes for version 20061011: 2036 20371) ACPI CA Core Subsystem: 2038 2039Completed an AML interpreter performance enhancement for control method 2040execution. Previously a 2-pass parse/execution, control methods are now 2041completely parsed and executed in a single pass. This improves overall 2042interpreter performance by ~25%, reduces code size, and reduces CPU stack 2043use. (Valery Podrezov + interpreter changes in version 20051202 that 2044eliminated namespace loading during the pass one parse.) 2045 2046Implemented _CID support for PCI Root Bridge detection. If the _HID does not 2047match the predefined PCI Root Bridge IDs, the _CID list (if present) is now 2048obtained and also checked for an ID match. 2049 2050Implemented additional support for the PCI _ADR execution: upsearch until a 2051device scope is found before executing _ADR. This allows PCI_Config 2052operation regions to be declared locally within control methods underneath 2053PCI device objects. 2054 2055Fixed a problem with a possible race condition between threads executing 2056AcpiWalkNamespace and the AML interpreter. This condition was removed by 2057modifying AcpiWalkNamespace to (by default) ignore all temporary namespace 2058entries created during any concurrent control method execution. An 2059additional namespace race condition is known to exist between 2060AcpiWalkNamespace and the Load/Unload ASL operators and is still under 2061investigation. 2062 2063Restructured the AML ParseLoop function, breaking it into several 2064subfunctions in order to reduce CPU stack use and improve maintainability. 2065(Mikhail Kouzmich) 2066 2067AcpiGetHandle: Fix for parameter validation to detect invalid combinations 2068of prefix handle and pathname. BZ 478 2069 2070Example Code and Data Size: These are the sizes for the OS-independent 2071acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2072debug version of the code includes the debug output trace mechanism and has 2073a much larger code and data size. 2074 2075 Previous Release: 2076 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 2077 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 2078 Current Release: 2079 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 2080 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 2081 20822) iASL Compiler/Disassembler and Tools: 2083 2084Ported the -g option (get local ACPI tables) to the new ACPICA Table Manager 2085to restore original behavior. 2086 2087---------------------------------------- 208827 September 2006. Summary of changes for version 20060927: 2089 20901) ACPI CA Core Subsystem: 2091 2092Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister. 2093These functions now use a spinlock for mutual exclusion and the interrupt 2094level indication flag is not needed. 2095 2096Fixed a problem with the Global Lock where the lock could appear to be 2097obtained before it is actually obtained. The global lock semaphore was 2098inadvertently created with one unit instead of zero units. (BZ 464) Fiodor 2099Suietov. 2100 2101Fixed a possible memory leak and fault in AcpiExResolveObjectToValue during 2102a read from a buffer or region field. (BZ 458) Fiodor Suietov. 2103 2104Example Code and Data Size: These are the sizes for the OS-independent 2105acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2106debug version of the code includes the debug output trace mechanism and has 2107a much larger code and data size. 2108 2109 Previous Release: 2110 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 2111 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 2112 Current Release: 2113 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 2114 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 2115 2116 21172) iASL Compiler/Disassembler and Tools: 2118 2119Fixed a compilation problem with the pre-defined Resource Descriptor field 2120names where an "object does not exist" error could be incorrectly generated 2121if the parent ResourceTemplate pathname places the template within a 2122different namespace scope than the current scope. (BZ 7212) 2123 2124Fixed a problem where the compiler could hang after syntax errors detected 2125in an ElseIf construct. (BZ 453) 2126 2127Fixed a problem with the AmlFilename parameter to the DefinitionBlock() 2128operator. An incorrect output filename was produced when this parameter was 2129a null string (""). Now, the original input filename is used as the AML 2130output filename, with an ".aml" extension. 2131 2132Implemented a generic batch command mode for the AcpiExec utility (execute 2133any AML debugger command) (Valery Podrezov). 2134 2135---------------------------------------- 213612 September 2006. Summary of changes for version 20060912: 2137 21381) ACPI CA Core Subsystem: 2139 2140Enhanced the implementation of the "serialized mode" of the interpreter 2141(enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is 2142specified, instead of creating a serialization semaphore per control method, 2143the interpreter lock is simply no longer released before a blocking 2144operation during control method execution. This effectively makes the AML 2145Interpreter single-threaded. The overhead of a semaphore per-method is 2146eliminated. 2147 2148Fixed a regression where an error was no longer emitted if a control method 2149attempts to create 2 objects of the same name. This once again returns 2150AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism that 2151will dynamically serialize the control method to possible prevent future 2152errors. (BZ 440) 2153 2154Integrated a fix for a problem with PCI Express HID detection in the PCI 2155Config Space setup procedure. (BZ 7145) 2156 2157Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the 2158AcpiHwInitialize function - the FADT registers are now validated when the 2159table is loaded. 2160 2161Added two new warnings during FADT verification - 1) if the FADT is larger 2162than the largest known FADT version, and 2) if there is a mismatch between a 216332-bit block address and the 64-bit X counterpart (when both are non-zero.) 2164 2165Example Code and Data Size: These are the sizes for the OS-independent 2166acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2167debug version of the code includes the debug output trace mechanism and has 2168a much larger code and data size. 2169 2170 Previous Release: 2171 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 2172 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 2173 Current Release: 2174 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 2175 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 2176 2177 21782) iASL Compiler/Disassembler and Tools: 2179 2180Fixed a problem with the implementation of the Switch() operator where the 2181temporary variable was declared too close to the actual Switch, instead of 2182at method level. This could cause a problem if the Switch() operator is 2183within a while loop, causing an error on the second iteration. (BZ 460) 2184 2185Disassembler - fix for error emitted for unknown type for target of scope 2186operator. Now, ignore it and continue. 2187 2188Disassembly of an FADT now verifies the input FADT and reports any errors 2189found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs. 2190 2191Disassembly of raw data buffers with byte initialization data now prefixes 2192each output line with the current buffer offset. 2193 2194Disassembly of ASF! table now includes all variable-length data fields at 2195the end of some of the subtables. 2196 2197The disassembler now emits a comment if a buffer appears to be a 2198ResourceTemplate, but cannot be disassembled as such because the EndTag does 2199not appear at the very end of the buffer. 2200 2201AcpiExec - Added the "-t" command line option to enable the serialized mode 2202of the AML interpreter. 2203 2204---------------------------------------- 220531 August 2006. Summary of changes for version 20060831: 2206 22071) ACPI CA Core Subsystem: 2208 2209Miscellaneous fixes for the Table Manager: 2210- Correctly initialize internal common FADT for all 64-bit "X" fields 2211- Fixed a couple table mapping issues during table load 2212- Fixed a couple alignment issues for IA64 2213- Initialize input array to zero in AcpiInitializeTables 2214- Additional parameter validation for AcpiGetTable, AcpiGetTableHeader, 2215AcpiGetTableByIndex 2216 2217Change for GPE support: when a "wake" GPE is received, all wake GPEs are now 2218immediately disabled to prevent the waking GPE from firing again and to 2219prevent other wake GPEs from interrupting the wake process. 2220 2221Added the AcpiGpeCount global that tracks the number of processed GPEs, to 2222be used for debugging systems with a large number of ACPI interrupts. 2223 2224Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in 2225both the ACPICA headers and the disassembler. 2226 2227Example Code and Data Size: These are the sizes for the OS-independent 2228acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2229debug version of the code includes the debug output trace mechanism and has 2230a much larger code and data size. 2231 2232 Previous Release: 2233 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 2234 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 2235 Current Release: 2236 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 2237 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 2238 2239 22402) iASL Compiler/Disassembler and Tools: 2241 2242Disassembler support for the DMAR ACPI table. 2243 2244---------------------------------------- 224523 August 2006. Summary of changes for version 20060823: 2246 22471) ACPI CA Core Subsystem: 2248 2249The Table Manager component has been completely redesigned and 2250reimplemented. The new design is much simpler, and reduces the overall code 2251and data size of the kernel-resident ACPICA by approximately 5%. Also, it is 2252now possible to obtain the ACPI tables very early during kernel 2253initialization, even before dynamic memory management is initialized. 2254(Alexey Starikovskiy, Fiodor Suietov, Bob Moore) 2255 2256Obsolete ACPICA interfaces: 2257 2258- AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel init 2259time). 2260- AcpiLoadTable: Not needed. 2261- AcpiUnloadTable: Not needed. 2262 2263New ACPICA interfaces: 2264 2265- AcpiInitializeTables: Must be called before the table manager can be used. 2266- AcpiReallocateRootTable: Used to transfer the root table to dynamically 2267allocated memory after it becomes available. 2268- AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI tables 2269in the RSDT/XSDT. 2270 2271Other ACPICA changes: 2272 2273- AcpiGetTableHeader returns the actual mapped table header, not a copy. Use 2274AcpiOsUnmapMemory to free this mapping. 2275- AcpiGetTable returns the actual mapped table. The mapping is managed 2276internally and must not be deleted by the caller. Use of this interface 2277causes no additional dynamic memory allocation. 2278- AcpiFindRootPointer: Support for physical addressing has been eliminated, 2279it appeared to be unused. 2280- The interface to AcpiOsMapMemory has changed to be consistent with the 2281other allocation interfaces. 2282- The interface to AcpiOsGetRootPointer has changed to eliminate unnecessary 2283parameters. 2284- ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 64- 2285bit platforms. Was previously 64 bits on all platforms. 2286- The interface to the ACPI Global Lock acquire/release macros have changed 2287slightly since ACPICA no longer keeps a local copy of the FACS with a 2288constructed pointer to the actual global lock. 2289 2290Porting to the new table manager: 2291 2292- AcpiInitializeTables: Must be called once, and can be called anytime 2293during the OS initialization process. It allows the host to specify an area 2294of memory to be used to store the internal version of the RSDT/XSDT (root 2295table). This allows the host to access ACPI tables before memory management 2296is initialized and running. 2297- AcpiReallocateRootTable: Can be called after memory management is running 2298to copy the root table to a dynamically allocated array, freeing up the 2299scratch memory specified in the call to AcpiInitializeTables. 2300- AcpiSubsystemInitialize: This existing interface is independent of the 2301Table Manager, and does not have to be called before the Table Manager can 2302be used, it only must be called before the rest of ACPICA can be used. 2303- ACPI Tables: Some changes have been made to the names and structure of the 2304actbl.h and actbl1.h header files and may require changes to existing code. 2305For example, bitfields have been completely removed because of their lack of 2306portability across C compilers. 2307- Update interfaces to the Global Lock acquire/release macros if local 2308versions are used. (see acwin.h) 2309 2310Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c 2311 2312New files: tbfind.c 2313 2314Example Code and Data Size: These are the sizes for the OS-independent 2315acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2316debug version of the code includes the debug output trace mechanism and has 2317a much larger code and data size. 2318 2319 Previous Release: 2320 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 2321 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 2322 Current Release: 2323 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 2324 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 2325 2326 23272) iASL Compiler/Disassembler and Tools: 2328 2329No changes for this release. 2330 2331---------------------------------------- 233221 July 2006. Summary of changes for version 20060721: 2333 23341) ACPI CA Core Subsystem: 2335 2336The full source code for the ASL test suite used to validate the iASL 2337compiler and the ACPICA core subsystem is being released with the ACPICA 2338source for the first time. The source is contained in a separate package and 2339consists of over 1100 files that exercise all ASL/AML operators. The package 2340should appear on the Intel/ACPI web site shortly. (Valery Podrezov, Fiodor 2341Suietov) 2342 2343Completed a new design and implementation for support of the ACPI Global 2344Lock. On the OS side, the global lock is now treated as a standard AML 2345mutex. Previously, multiple OS threads could "acquire" the global lock 2346simultaneously. However, this could cause the BIOS to be starved out of the 2347lock - especially in cases such as the Embedded Controller driver where 2348there is a tight coupling between the OS and the BIOS. 2349 2350Implemented an optimization for the ACPI Global Lock interrupt mechanism. 2351The Global Lock interrupt handler no longer queues the execution of a 2352separate thread to signal the global lock semaphore. Instead, the semaphore 2353is signaled directly from the interrupt handler. 2354 2355Implemented support within the AML interpreter for package objects that 2356contain a larger AML length (package list length) than the package element 2357count. In this case, the length of the package is truncated to match the 2358package element count. Some BIOS code apparently modifies the package length 2359on the fly, and this change supports this behavior. Provides compatibility 2360with the MS AML interpreter. (With assistance from Fiodor Suietov) 2361 2362Implemented a temporary fix for the BankValue parameter of a Bank Field to 2363support all constant values, now including the Zero and One opcodes. 2364Evaluation of this parameter must eventually be converted to a full TermArg 2365evaluation. A not-implemented error is now returned (temporarily) for non- 2366constant values for this parameter. 2367 2368Fixed problem reports (Fiodor Suietov) integrated: 2369- Fix for premature object deletion after CopyObject on Operation Region (BZ 2370350) 2371 2372Example Code and Data Size: These are the sizes for the OS-independent 2373acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2374debug version of the code includes the debug output trace mechanism and has 2375a much larger code and data size. 2376 2377 Previous Release: 2378 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total 2379 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total 2380 Current Release: 2381 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 2382 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 2383 2384 23852) iASL Compiler/Disassembler and Tools: 2386 2387No changes for this release. 2388 2389---------------------------------------- 239007 July 2006. Summary of changes for version 20060707: 2391 23921) ACPI CA Core Subsystem: 2393 2394Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers 2395that do not allow the initialization of address pointers within packed 2396structures - even though the hardware itself may support misaligned 2397transfers. Some of the debug data structures are packed by default to 2398minimize size. 2399 2400Added an error message for the case where AcpiOsGetThreadId() returns zero. 2401A non-zero value is required by the core ACPICA code to ensure the proper 2402operation of AML mutexes and recursive control methods. 2403 2404The DSDT is now the only ACPI table that determines whether the AML 2405interpreter is in 32-bit or 64-bit mode. Not really a functional change, but 2406the hooks for per-table 32/64 switching have been removed from the code. A 2407clarification to the ACPI specification is forthcoming in ACPI 3.0B. 2408 2409Fixed a possible leak of an OwnerID in the error path of 2410AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID 2411deletion to a single place in AcpiTbUninstallTable to correct possible leaks 2412when using the AcpiTbDeleteTablesByType interface (with assistance from 2413Lance Ortiz.) 2414 2415Fixed a problem with Serialized control methods where the semaphore 2416associated with the method could be over-signaled after multiple method 2417invocations. 2418 2419Fixed two issues with the locking of the internal namespace data structure. 2420Both the Unload() operator and AcpiUnloadTable interface now lock the 2421namespace during the namespace deletion associated with the table unload 2422(with assistance from Linn Crosetto.) 2423 2424Fixed problem reports (Valery Podrezov) integrated: 2425- Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426) 2426 2427Fixed problem reports (Fiodor Suietov) integrated: 2428- Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369) 2429- On Address Space handler deletion, needless deactivation call (BZ 374) 2430- AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 375) 2431- Possible memory leak, Notify sub-objects of Processor, Power, ThermalZone 2432(BZ 376) 2433- AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378) 2434- Minimum Length of RSDT should be validated (BZ 379) 2435- AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no 2436Handler (BZ (380) 2437- AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type loaded 2438(BZ 381) 2439 2440Example Code and Data Size: These are the sizes for the OS-independent 2441acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2442debug version of the code includes the debug output trace mechanism and has 2443a much larger code and data size. 2444 2445 Previous Release: 2446 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 2447 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 2448 Current Release: 2449 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 2450 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 2451 2452 24532) iASL Compiler/Disassembler and Tools: 2454 2455Fixed problem reports: 2456Compiler segfault when ASL contains a long (>1024) String declaration (BZ 2457436) 2458 2459---------------------------------------- 246023 June 2006. Summary of changes for version 20060623: 2461 24621) ACPI CA Core Subsystem: 2463 2464Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This 2465allows the type to be customized to the host OS for improved efficiency 2466(since a spinlock is usually a very small object.) 2467 2468Implemented support for "ignored" bits in the ACPI registers. According to 2469the ACPI specification, these bits should be preserved when writing the 2470registers via a read/modify/write cycle. There are 3 bits preserved in this 2471manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11]. 2472 2473Implemented the initial deployment of new OSL mutex interfaces. Since some 2474host operating systems have separate mutex and semaphore objects, this 2475feature was requested. The base code now uses mutexes (and the new mutex 2476interfaces) wherever a binary semaphore was used previously. However, for 2477the current release, the mutex interfaces are defined as macros to map them 2478to the existing semaphore interfaces. Therefore, no OSL changes are required 2479at this time. (See acpiosxf.h) 2480 2481Fixed several problems with the support for the control method SyncLevel 2482parameter. The SyncLevel now works according to the ACPI specification and 2483in concert with the Mutex SyncLevel parameter, since the current SyncLevel 2484is a property of the executing thread. Mutual exclusion for control methods 2485is now implemented with a mutex instead of a semaphore. 2486 2487Fixed three instances of the use of the C shift operator in the bitfield 2488support code (exfldio.c) to avoid the use of a shift value larger than the 2489target data width. The behavior of C compilers is undefined in this case and 2490can cause unpredictable results, and therefore the case must be detected and 2491avoided. (Fiodor Suietov) 2492 2493Added an info message whenever an SSDT or OEM table is loaded dynamically 2494via the Load() or LoadTable() ASL operators. This should improve debugging 2495capability since it will show exactly what tables have been loaded (beyond 2496the tables present in the RSDT/XSDT.) 2497 2498Example Code and Data Size: These are the sizes for the OS-independent 2499acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2500debug version of the code includes the debug output trace mechanism and has 2501a much larger code and data size. 2502 2503 Previous Release: 2504 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 2505 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 2506 Current Release: 2507 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 2508 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 2509 2510 25112) iASL Compiler/Disassembler and Tools: 2512 2513No changes for this release. 2514 2515---------------------------------------- 251608 June 2006. Summary of changes for version 20060608: 2517 25181) ACPI CA Core Subsystem: 2519 2520Converted the locking mutex used for the ACPI hardware to a spinlock. This 2521change should eliminate all problems caused by attempting to acquire a 2522semaphore at interrupt level, and it means that all ACPICA external 2523interfaces that directly access the ACPI hardware can be safely called from 2524interrupt level. OSL code that implements the semaphore interfaces should be 2525able to eliminate any workarounds for being called at interrupt level. 2526 2527Fixed a regression introduced in 20060526 where the ACPI device 2528initialization could be prematurely aborted with an AE_NOT_FOUND if a device 2529did not have an optional _INI method. 2530 2531Fixed an IndexField issue where a write to the Data Register should be 2532limited in size to the AccessSize (width) of the IndexField itself. (BZ 433, 2533Fiodor Suietov) 2534 2535Fixed problem reports (Valery Podrezov) integrated: 2536- Allow store of ThermalZone objects to Debug object (BZ 5369/5370) 2537 2538Fixed problem reports (Fiodor Suietov) integrated: 2539- AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364) 2540 2541Removed four global mutexes that were obsolete and were no longer being 2542used. 2543 2544Example Code and Data Size: These are the sizes for the OS-independent 2545acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2546debug version of the code includes the debug output trace mechanism and has 2547a much larger code and data size. 2548 2549 Previous Release: 2550 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 2551 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 2552 Current Release: 2553 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 2554 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 2555 2556 25572) iASL Compiler/Disassembler and Tools: 2558 2559Fixed a fault when using -g option (get tables from registry) on Windows 2560machines. 2561 2562Fixed problem reports integrated: 2563- Generate error if CreateField NumBits parameter is zero. (BZ 405) 2564- Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor 2565Suietov) 2566- Global table revision override (-r) is ignored (BZ 413) 2567 2568---------------------------------------- 256926 May 2006. Summary of changes for version 20060526: 2570 25711) ACPI CA Core Subsystem: 2572 2573Restructured, flattened, and simplified the internal interfaces for 2574namespace object evaluation - resulting in smaller code, less CPU stack use, 2575and fewer interfaces. (With assistance from Mikhail Kouzmich) 2576 2577Fixed a problem with the CopyObject operator where the first parameter was 2578not typed correctly for the parser, interpreter, compiler, and disassembler. 2579Caused various errors and unexpected behavior. 2580 2581Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits 2582produced incorrect results with some C compilers. Since the behavior of C 2583compilers when the shift value is larger than the datatype width is 2584apparently not well defined, the interpreter now detects this condition and 2585simply returns zero as expected in all such cases. (BZ 395) 2586 2587Fixed problem reports (Valery Podrezov) integrated: 2588- Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329) 2589- Allow interpreter to handle nested method declarations (BZ 5361) 2590 2591Fixed problem reports (Fiodor Suietov) integrated: 2592- AcpiTerminate doesn't free debug memory allocation list objects (BZ 355) 2593- After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 356) 2594- AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357) 2595- Resource Manager should return AE_TYPE for non-device objects (BZ 358) 2596- Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359) 2597- Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360) 2598- Incomplete cleanup branch in AcpiPsParseAml (BZ 361) 2599- Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362) 2600- AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ 365) 2601- Status of the Global Initialization Handler call not used (BZ 366) 2602- Incorrect object parameter to Global Initialization Handler (BZ 367) 2603 2604Example Code and Data Size: These are the sizes for the OS-independent 2605acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2606debug version of the code includes the debug output trace mechanism and has 2607a much larger code and data size. 2608 2609 Previous Release: 2610 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 2611 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 2612 Current Release: 2613 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 2614 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 2615 2616 26172) iASL Compiler/Disassembler and Tools: 2618 2619Modified the parser to allow the names IO, DMA, and IRQ to be used as 2620namespace identifiers with no collision with existing resource descriptor 2621macro names. This provides compatibility with other ASL compilers and is 2622most useful for disassembly/recompilation of existing tables without parse 2623errors. (With assistance from Thomas Renninger) 2624 2625Disassembler: fixed an incorrect disassembly problem with the 2626DataTableRegion and CopyObject operators. Fixed a possible fault during 2627disassembly of some Alias operators. 2628 2629---------------------------------------- 263012 May 2006. Summary of changes for version 20060512: 2631 26321) ACPI CA Core Subsystem: 2633 2634Replaced the AcpiOsQueueForExecution interface with a new interface named 2635AcpiOsExecute. The major difference is that the new interface does not have 2636a Priority parameter, this appeared to be useless and has been replaced by a 2637Type parameter. The Type tells the host what type of execution is being 2638requested, such as global lock handler, notify handler, GPE handler, etc. 2639This allows the host to queue and execute the request as appropriate for the 2640request type, possibly using different work queues and different priorities 2641for the various request types. This enables fixes for multithreading 2642deadlock problems such as BZ #5534, and will require changes to all existing 2643OS interface layers. (Alexey Starikovskiy and Bob Moore) 2644 2645Fixed a possible memory leak associated with the support for the so-called 2646"implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor 2647Suietov) 2648 2649Fixed a problem with the Load() operator where a table load from an 2650operation region could overwrite an internal table buffer by up to 7 bytes 2651and cause alignment faults on IPF systems. (With assistance from Luming Yu) 2652 2653Example Code and Data Size: These are the sizes for the OS-independent 2654acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2655debug version of the code includes the debug output trace mechanism and has 2656a much larger code and data size. 2657 2658 Previous Release: 2659 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 2660 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 2661 Current Release: 2662 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 2663 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 2664 2665 2666 26672) iASL Compiler/Disassembler and Tools: 2668 2669Disassembler: Implemented support to cross reference the internal namespace 2670and automatically generate ASL External() statements for symbols not defined 2671within the current table being disassembled. This will simplify the 2672disassembly and recompilation of interdependent tables such as SSDTs since 2673these statements will no longer have to be added manually. 2674 2675Disassembler: Implemented experimental support to automatically detect 2676invocations of external control methods and generate appropriate External() 2677statements. This is problematic because the AML cannot be correctly parsed 2678until the number of arguments for each control method is known. Currently, 2679standalone method invocations and invocations as the source operand of a 2680Store() statement are supported. 2681 2682Disassembler: Implemented support for the ASL pseudo-operators LNotEqual, 2683LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()), 2684LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code 2685more readable and likely closer to the original ASL source. 2686 2687---------------------------------------- 268821 April 2006. Summary of changes for version 20060421: 2689 26901) ACPI CA Core Subsystem: 2691 2692Removed a device initialization optimization introduced in 20051216 where 2693the _STA method was not run unless an _INI was also present for the same 2694device. This optimization could cause problems because it could allow _INI 2695methods to be run within a not-present device subtree. (If a not-present 2696device had no _INI, _STA would not be run, the not-present status would not 2697be discovered, and the children of the device would be incorrectly 2698traversed.) 2699 2700Implemented a new _STA optimization where namespace subtrees that do not 2701contain _INI are identified and ignored during device initialization. 2702Selectively running _STA can significantly improve boot time on large 2703machines (with assistance from Len Brown.) 2704 2705Implemented support for the device initialization case where the returned 2706_STA flags indicate a device not-present but functioning. In this case, _INI 2707is not run, but the device children are examined for presence, as per the 2708ACPI specification. 2709 2710Implemented an additional change to the IndexField support in order to 2711conform to MS behavior. The value written to the Index Register is not 2712simply a byte offset, it is a byte offset in units of the access width of 2713the parent Index Field. (Fiodor Suietov) 2714 2715Defined and deployed a new OSL interface, AcpiOsValidateAddress. This 2716interface is called during the creation of all AML operation regions, and 2717allows the host OS to exert control over what addresses it will allow the 2718AML code to access. Operation Regions whose addresses are disallowed will 2719cause a runtime exception when they are actually accessed (will not affect 2720or abort table loading.) See oswinxf or osunixxf for an example 2721implementation. 2722 2723Defined and deployed a new OSL interface, AcpiOsValidateInterface. This 2724interface allows the host OS to match the various "optional" 2725interface/behavior strings for the _OSI predefined control method as 2726appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf 2727for an example implementation. 2728 2729Restructured and corrected various problems in the exception handling code 2730paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod 2731(with assistance from Takayoshi Kochi.) 2732 2733Modified the Linux source converter to ignore quoted string literals while 2734converting identifiers from mixed to lower case. This will correct problems 2735with the disassembler and other areas where such strings must not be 2736modified. 2737 2738The ACPI_FUNCTION_* macros no longer require quotes around the function 2739name. This allows the Linux source converter to convert the names, now that 2740the converter ignores quoted strings. 2741 2742Example Code and Data Size: These are the sizes for the OS-independent 2743acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2744debug version of the code includes the debug output trace mechanism and has 2745a much larger code and data size. 2746 2747 Previous Release: 2748 2749 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 2750 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 2751 Current Release: 2752 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 2753 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 2754 2755 27562) iASL Compiler/Disassembler and Tools: 2757 2758Implemented 3 new warnings for iASL, and implemented multiple warning levels 2759(w2 flag). 2760 27611) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is not 2762WAIT_FOREVER (0xFFFF) and the code does not examine the return value to 2763check for the possible timeout, a warning is issued. 2764 27652) Useless operators: If an ASL operator does not specify an optional target 2766operand and it also does not use the function return value from the 2767operator, a warning is issued since the operator effectively does nothing. 2768 27693) Unreferenced objects: If a namespace object is created, but never 2770referenced, a warning is issued. This is a warning level 2 since there are 2771cases where this is ok, such as when a secondary table is loaded that uses 2772the unreferenced objects. Even so, care is taken to only flag objects that 2773don't look like they will ever be used. For example, the reserved methods 2774(starting with an underscore) are usually not referenced because it is 2775expected that the OS will invoke them. 2776 2777---------------------------------------- 277831 March 2006. Summary of changes for version 20060331: 2779 27801) ACPI CA Core Subsystem: 2781 2782Implemented header file support for the following additional ACPI tables: 2783ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this support, 2784all current and known ACPI tables are now defined in the ACPICA headers and 2785are available for use by device drivers and other software. 2786 2787Implemented support to allow tables that contain ACPI names with invalid 2788characters to be loaded. Previously, this would cause the table load to 2789fail, but since there are several known cases of such tables on existing 2790machines, this change was made to enable ACPI support for them. Also, this 2791matches the behavior of the Microsoft ACPI implementation. 2792 2793Fixed a couple regressions introduced during the memory optimization in the 279420060317 release. The namespace node definition required additional 2795reorganization and an internal datatype that had been changed to 8-bit was 2796restored to 32-bit. (Valery Podrezov) 2797 2798Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState 2799could be passed through to AcpiOsReleaseObject which is unexpected. Such 2800null pointers are now trapped and ignored, matching the behavior of the 2801previous implementation before the deployment of AcpiOsReleaseObject. 2802(Valery Podrezov, Fiodor Suietov) 2803 2804Fixed a memory mapping leak during the deletion of a SystemMemory operation 2805region where a cached memory mapping was not deleted. This became a 2806noticeable problem for operation regions that are defined within frequently 2807used control methods. (Dana Meyers) 2808 2809Reorganized the ACPI table header files into two main files: one for the 2810ACPI tables consumed by the ACPICA core, and another for the miscellaneous 2811ACPI tables that are consumed by the drivers and other software. The various 2812FADT definitions were merged into one common section and three different 2813tables (ACPI 1.0, 1.0+, and 2.0) 2814 2815Example Code and Data Size: These are the sizes for the OS-independent 2816acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2817debug version of the code includes the debug output trace mechanism and has 2818a much larger code and data size. 2819 2820 Previous Release: 2821 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 2822 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 2823 Current Release: 2824 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 2825 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 2826 2827 28282) iASL Compiler/Disassembler and Tools: 2829 2830Disassembler: Implemented support to decode and format all non-AML ACPI 2831tables (tables other than DSDTs and SSDTs.) This includes the new tables 2832added to the ACPICA headers, therefore all current and known ACPI tables are 2833supported. 2834 2835Disassembler: The change to allow ACPI names with invalid characters also 2836enables the disassembly of such tables. Invalid characters within names are 2837changed to '*' to make the name printable; the iASL compiler will still 2838generate an error for such names, however, since this is an invalid ACPI 2839character. 2840 2841Implemented an option for AcpiXtract (-a) to extract all tables found in the 2842input file. The default invocation extracts only the DSDTs and SSDTs. 2843 2844Fixed a couple of gcc generation issues for iASL and AcpiExec and added a 2845makefile for the AcpiXtract utility. 2846 2847---------------------------------------- 284817 March 2006. Summary of changes for version 20060317: 2849 28501) ACPI CA Core Subsystem: 2851 2852Implemented the use of a cache object for all internal namespace nodes. 2853Since there are about 1000 static nodes in a typical system, this will 2854decrease memory use for cache implementations that minimize per-allocation 2855overhead (such as a slab allocator.) 2856 2857Removed the reference count mechanism for internal namespace nodes, since it 2858was deemed unnecessary. This reduces the size of each namespace node by 2859about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit case, 2860and 32 bytes for the 64-bit case. 2861 2862Optimized several internal data structures to reduce object size on 64-bit 2863platforms by packing data within the 64-bit alignment. This includes the 2864frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static 2865instances corresponding to the namespace objects. 2866 2867Added two new strings for the predefined _OSI method: "Windows 2001.1 SP1" 2868and "Windows 2006". 2869 2870Split the allocation tracking mechanism out to a separate file, from 2871utalloc.c to uttrack.c. This mechanism appears to be only useful for 2872application-level code. Kernels may wish to not include uttrack.c in 2873distributions. 2874 2875Removed all remnants of the obsolete ACPI_REPORT_* macros and the associated 2876code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING 2877macros.) 2878 2879Code and Data Size: These are the sizes for the acpica.lib produced by the 2880Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 2881driver or OSPM code. The debug version of the code includes the debug output 2882trace mechanism and has a much larger code and data size. Note that these 2883values will vary depending on the efficiency of the compiler and the 2884compiler options used during generation. 2885 2886 Previous Release: 2887 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 2888 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 2889 Current Release: 2890 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 2891 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 2892 2893 28942) iASL Compiler/Disassembler and Tools: 2895 2896Implemented an ANSI C version of the acpixtract utility. This version will 2897automatically extract the DSDT and all SSDTs from the input acpidump text 2898file and dump the binary output to separate files. It can also display a 2899summary of the input file including the headers for each table found and 2900will extract any single ACPI table, with any signature. (See 2901source/tools/acpixtract) 2902 2903---------------------------------------- 290410 March 2006. Summary of changes for version 20060310: 2905 29061) ACPI CA Core Subsystem: 2907 2908Tagged all external interfaces to the subsystem with the new 2909ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to assist 2910kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL 2911macro. The default definition is NULL. 2912 2913Added the ACPI_THREAD_ID type for the return value from AcpiOsGetThreadId. 2914This allows the host to define this as necessary to simplify kernel 2915integration. The default definition is ACPI_NATIVE_UINT. 2916 2917Fixed two interpreter problems related to error processing, the deletion of 2918objects, and placing invalid pointers onto the internal operator result 2919stack. BZ 6028, 6151 (Valery Podrezov) 2920 2921Increased the reference count threshold where a warning is emitted for large 2922reference counts in order to eliminate unnecessary warnings on systems with 2923large namespaces (especially 64-bit.) Increased the value from 0x400 to 29240x800. 2925 2926Due to universal disagreement as to the meaning of the 'c' in the calloc() 2927function, the ACPI_MEM_CALLOCATE macro has been renamed to 2928ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'. 2929ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and 2930ACPI_FREE. 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: 81.0K Code, 17.8K Data, 98.8K Total 2941 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 2942 Current Release: 2943 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 2944 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 2945 2946 29472) iASL Compiler/Disassembler: 2948 2949Disassembler: implemented support for symbolic resource descriptor 2950references. If a CreateXxxxField operator references a fixed offset within a 2951resource descriptor, a name is assigned to the descriptor and the offset is 2952translated to the appropriate resource tag and pathname. The addition of 2953this support brings the disassembled code very close to the original ASL 2954source code and helps eliminate run-time errors when the disassembled code 2955is modified (and recompiled) in such a way as to invalidate the original 2956fixed offsets. 2957 2958Implemented support for a Descriptor Name as the last parameter to the ASL 2959Register() macro. This parameter was inadvertently left out of the ACPI 2960specification, and will be added for ACPI 3.0b. 2961 2962Fixed a problem where the use of the "_OSI" string (versus the full path 2963"\_OSI") caused an internal compiler error. ("No back ptr to op") 2964 2965Fixed a problem with the error message that occurs when an invalid string is 2966used for a _HID object (such as one with an embedded asterisk: "*PNP010A".) 2967The correct message is now displayed. 2968 2969---------------------------------------- 297017 February 2006. Summary of changes for version 20060217: 2971 29721) ACPI CA Core Subsystem: 2973 2974Implemented a change to the IndexField support to match the behavior of the 2975Microsoft AML interpreter. The value written to the Index register is now a 2976byte offset, no longer an index based upon the width of the Data register. 2977This should fix IndexField problems seen on some machines where the Data 2978register is not exactly one byte wide. The ACPI specification will be 2979clarified on this point. 2980 2981Fixed a problem where several resource descriptor types could overrun the 2982internal descriptor buffer due to size miscalculation: VendorShort, 2983VendorLong, and Interrupt. This was noticed on IA64 machines, but could 2984affect all platforms. 2985 2986Fixed a problem where individual resource descriptors were misaligned within 2987the internal buffer, causing alignment faults on IA64 platforms. 2988 2989Code and Data Size: These are the sizes for the acpica.lib produced by the 2990Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 2991driver or OSPM code. The debug version of the code includes the debug output 2992trace mechanism and has a much larger code and data size. Note that these 2993values will vary depending on the efficiency of the compiler and the 2994compiler options used during generation. 2995 2996 Previous Release: 2997 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 2998 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 2999 Current Release: 3000 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 3001 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 3002 3003 30042) iASL Compiler/Disassembler: 3005 3006Implemented support for new reserved names: _WDG and _WED are Microsoft 3007extensions for Windows Instrumentation Management, _TDL is a new ACPI- 3008defined method (Throttling Depth Limit.) 3009 3010Fixed a problem where a zero-length VendorShort or VendorLong resource 3011descriptor was incorrectly emitted as a descriptor of length one. 3012 3013---------------------------------------- 301410 February 2006. Summary of changes for version 20060210: 3015 30161) ACPI CA Core Subsystem: 3017 3018Removed a couple of extraneous ACPI_ERROR messages that appeared during 3019normal execution. These became apparent after the conversion from 3020ACPI_DEBUG_PRINT. 3021 3022Fixed a problem where the CreateField operator could hang if the BitIndex or 3023NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359) 3024 3025Fixed a problem where a DeRefOf operation on a buffer object incorrectly 3026failed with an exception. This also fixes a couple of related RefOf and 3027DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387) 3028 3029Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead of 3030AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, BZ 30315480) 3032 3033Implemented a memory cleanup at the end of the execution of each iteration 3034of an AML While() loop, preventing the accumulation of outstanding objects. 3035(Valery Podrezov, BZ 5427) 3036 3037Eliminated a chunk of duplicate code in the object resolution code. (Valery 3038Podrezov, BZ 5336) 3039 3040Fixed several warnings during the 64-bit code generation. 3041 3042The AcpiSrc source code conversion tool now inserts one line of whitespace 3043after an if() statement that is followed immediately by a comment, improving 3044readability of the Linux code. 3045 3046Code and Data Size: The current and previous library sizes for the core 3047subsystem are shown below. These are the code and data sizes for the 3048acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3049values do not include any ACPI driver or OSPM code. The debug version of the 3050code includes the debug output trace mechanism and has a much larger code 3051and data size. Note that these values will vary depending on the efficiency 3052of the compiler and the compiler options used during generation. 3053 3054 Previous Release: 3055 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 3056 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 3057 Current Release: 3058 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 3059 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 3060 3061 30622) iASL Compiler/Disassembler: 3063 3064Fixed a problem with the disassembly of a BankField operator with a complex 3065expression for the BankValue parameter. 3066 3067---------------------------------------- 306827 January 2006. Summary of changes for version 20060127: 3069 30701) ACPI CA Core Subsystem: 3071 3072Implemented support in the Resource Manager to allow unresolved namestring 3073references within resource package objects for the _PRT method. This support 3074is in addition to the previously implemented unresolved reference support 3075within the AML parser. If the interpreter slack mode is enabled, these 3076unresolved references will be passed through to the caller as a NULL package 3077entry. 3078 3079Implemented and deployed new macros and functions for error and warning 3080messages across the subsystem. These macros are simpler and generate less 3081code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION, 3082ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older 3083macros remain defined to allow ACPI drivers time to migrate to the new 3084macros. 3085 3086Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of the 3087Acquire/Release Lock OSL interfaces. 3088 3089Fixed a problem where Alias ASL operators are sometimes not correctly 3090resolved, in both the interpreter and the iASL compiler. 3091 3092Fixed several problems with the implementation of the ConcatenateResTemplate 3093ASL operator. As per the ACPI specification, zero length buffers are now 3094treated as a single EndTag. One-length buffers always cause a fatal 3095exception. Non-zero length buffers that do not end with a full 2-byte EndTag 3096cause a fatal exception. 3097 3098Fixed a possible structure overwrite in the AcpiGetObjectInfo external 3099interface. (With assistance from Thomas Renninger) 3100 3101Code and Data Size: The current and previous library sizes for the core 3102subsystem are shown below. These are the code and data sizes for the 3103acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3104values do not include any ACPI driver or OSPM code. The debug version of the 3105code includes the debug output trace mechanism and has a much larger code 3106and data size. Note that these values will vary depending on the efficiency 3107of the compiler and the compiler options used during generation. 3108 3109 Previous Release: 3110 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 3111 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 3112 Current Release: 3113 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 3114 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 3115 3116 31172) iASL Compiler/Disassembler: 3118 3119Fixed an internal error that was generated for any forward references to ASL 3120Alias objects. 3121 3122---------------------------------------- 312313 January 2006. Summary of changes for version 20060113: 3124 31251) ACPI CA Core Subsystem: 3126 3127Added 2006 copyright to all module headers and signons. This affects 3128virtually every file in the ACPICA core subsystem, iASL compiler, and the 3129utilities. 3130 3131Enhanced the ACPICA error reporting in order to simplify user migration to 3132the non-debug version of ACPICA. Replaced all instances of the 3133ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN debug 3134levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros, 3135respectively. This preserves all error and warning messages in the non-debug 3136version of the ACPICA code (this has been referred to as the "debug lite" 3137option.) Over 200 cases were converted to create a total of over 380 3138error/warning messages across the ACPICA code. This increases the code and 3139data size of the default non-debug version of the code somewhat (about 13K), 3140but all error/warning reporting may be disabled if desired (and code 3141eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time 3142configuration option. The size of the debug version of ACPICA remains about 3143the same. 3144 3145Fixed a memory leak within the AML Debugger "Set" command. One object was 3146not properly deleted for every successful invocation of the command. 3147 3148Code and Data Size: The current and previous library sizes for the core 3149subsystem are shown below. These are the code and data sizes for the 3150acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3151values do not include any ACPI driver or OSPM code. The debug version of the 3152code includes the debug output trace mechanism and has a much larger code 3153and data size. Note that these values will vary depending on the efficiency 3154of the compiler and the compiler options used during generation. 3155 3156 Previous Release: 3157 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 3158 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 3159 Current Release: 3160 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 3161 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 3162 3163 31642) iASL Compiler/Disassembler: 3165 3166The compiler now officially supports the ACPI 3.0a specification that was 3167released on December 30, 2005. (Specification is available at www.acpi.info) 3168 3169---------------------------------------- 317016 December 2005. Summary of changes for version 20051216: 3171 31721) ACPI CA Core Subsystem: 3173 3174Implemented optional support to allow unresolved names within ASL Package 3175objects. A null object is inserted in the package when a named reference 3176cannot be located in the current namespace. Enabled via the interpreter 3177slack flag, this should eliminate AE_NOT_FOUND exceptions seen on machines 3178that contain such code. 3179 3180Implemented an optimization to the initialization sequence that can improve 3181boot time. During ACPI device initialization, the _STA method is now run if 3182and only if the _INI method exists. The _STA method is used to determine if 3183the device is present; An _INI can only be run if _STA returns present, but 3184it is a waste of time to run the _STA method if the _INI does not exist. 3185(Prototype and assistance from Dong Wei) 3186 3187Implemented use of the C99 uintptr_t for the pointer casting macros if it is 3188available in the current compiler. Otherwise, the default (void *) cast is 3189used as before. 3190 3191Fixed some possible memory leaks found within the execution path of the 3192Break, Continue, If, and CreateField operators. (Valery Podrezov) 3193 3194Fixed a problem introduced in the 20051202 release where an exception is 3195generated during method execution if a control method attempts to declare 3196another method. 3197 3198Moved resource descriptor string constants that are used by both the AML 3199disassembler and AML debugger to the common utilities directory so that 3200these components are independent. 3201 3202Implemented support in the AcpiExec utility (-e switch) to globally ignore 3203exceptions during control method execution (method is not aborted.) 3204 3205Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix 3206generation. 3207 3208Code and Data Size: The current and previous library sizes for the core 3209subsystem are shown below. These are the code and data sizes for the 3210acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3211values do not include any ACPI driver or OSPM code. The debug version of the 3212code includes the debug output trace mechanism and has a much larger code 3213and data size. Note that these values will vary depending on the efficiency 3214of the compiler and the compiler options used during generation. 3215 3216 Previous Release: 3217 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 3218 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 3219 Current Release: 3220 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 3221 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 3222 3223 32242) iASL Compiler/Disassembler: 3225 3226Fixed a problem where a CPU stack overflow fault could occur if a recursive 3227method call was made from within a Return statement. 3228 3229---------------------------------------- 323002 December 2005. Summary of changes for version 20051202: 3231 32321) ACPI CA Core Subsystem: 3233 3234Modified the parsing of control methods to no longer create namespace 3235objects during the first pass of the parse. Objects are now created only 3236during the execute phase, at the moment the namespace creation operator is 3237encountered in the AML (Name, OperationRegion, CreateByteField, etc.) This 3238should eliminate ALREADY_EXISTS exceptions seen on some machines where 3239reentrant control methods are protected by an AML mutex. The mutex will now 3240correctly block multiple threads from attempting to create the same object 3241more than once. 3242 3243Increased the number of available Owner Ids for namespace object tracking 3244from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen on 3245some machines with a large number of ACPI tables (either static or dynamic). 3246 3247Fixed a problem with the AcpiExec utility where a fault could occur when the 3248-b switch (batch mode) is used. 3249 3250Enhanced the namespace dump routine to output the owner ID for each 3251namespace object. 3252 3253Code and Data Size: The current and previous library sizes for the core 3254subsystem are shown below. These are the code and data sizes for the 3255acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3256values do not include any ACPI driver or OSPM code. The debug version of the 3257code includes the debug output trace mechanism and has a much larger code 3258and data size. Note that these values will vary depending on the efficiency 3259of the compiler and the compiler options used during generation. 3260 3261 Previous Release: 3262 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 3263 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 3264 Current Release: 3265 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 3266 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 3267 3268 32692) iASL Compiler/Disassembler: 3270 3271Fixed a parse error during compilation of certain Switch/Case constructs. To 3272simplify the parse, the grammar now allows for multiple Default statements 3273and this error is now detected and flagged during the analysis phase. 3274 3275Disassembler: The disassembly now includes the contents of the original 3276table header within a comment at the start of the file. This includes the 3277name and version of the original ASL compiler. 3278 3279---------------------------------------- 328017 November 2005. Summary of changes for version 20051117: 3281 32821) ACPI CA Core Subsystem: 3283 3284Fixed a problem in the AML parser where the method thread count could be 3285decremented below zero if any errors occurred during the method parse phase. 3286This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some machines. 3287This also fixed a related regression with the mechanism that detects and 3288corrects methods that cannot properly handle reentrancy (related to the 3289deployment of the new OwnerId mechanism.) 3290 3291Eliminated the pre-parsing of control methods (to detect errors) during 3292table load. Related to the problem above, this was causing unwind issues if 3293any errors occurred during the parse, and it seemed to be overkill. A table 3294load should not be aborted if there are problems with any single control 3295method, thus rendering this feature rather pointless. 3296 3297Fixed a problem with the new table-driven resource manager where an internal 3298buffer overflow could occur for small resource templates. 3299 3300Implemented a new external interface, AcpiGetVendorResource. This interface 3301will find and return a vendor-defined resource descriptor within a _CRS or 3302_PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn Helgaas. 3303 3304Removed the length limit (200) on string objects as per the upcoming ACPI 33053.0A specification. This affects the following areas of the interpreter: 1) 3306any implicit conversion of a Buffer to a String, 2) a String object result 3307of the ASL Concatentate operator, 3) the String object result of the ASL 3308ToString operator. 3309 3310Fixed a problem in the Windows OS interface layer (OSL) where a WAIT_FOREVER 3311on a semaphore object would incorrectly timeout. This allows the 3312multithreading features of the AcpiExec utility to work properly under 3313Windows. 3314 3315Updated the Linux makefiles for the iASL compiler and AcpiExec to include 3316the recently added file named "utresrc.c". 3317 3318Code and Data Size: The current and previous library sizes for the core 3319subsystem are shown below. These are the code and data sizes for the 3320acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3321values do not include any ACPI driver or OSPM code. The debug version of the 3322code includes the debug output trace mechanism and has a much larger code 3323and data size. Note that these values will vary depending on the efficiency 3324of the compiler and the compiler options used during generation. 3325 3326 Previous Release: 3327 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 3328 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 3329 Current Release: 3330 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 3331 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 3332 3333 33342) iASL Compiler/Disassembler: 3335 3336Removed the limit (200) on string objects as per the upcoming ACPI 3.0A 3337specification. For the iASL compiler, this means that string literals within 3338the source ASL can be of any length. 3339 3340Enhanced the listing output to dump the AML code for resource descriptors 3341immediately after the ASL code for each descriptor, instead of in a block at 3342the end of the entire resource template. 3343 3344Enhanced the compiler debug output to dump the entire original parse tree 3345constructed during the parse phase, before any transforms are applied to the 3346tree. The transformed tree is dumped also. 3347 3348---------------------------------------- 334902 November 2005. Summary of changes for version 20051102: 3350 33511) ACPI CA Core Subsystem: 3352 3353Modified the subsystem initialization sequence to improve GPE support. The 3354GPE initialization has been split into two parts in order to defer execution 3355of the _PRW methods (Power Resources for Wake) until after the hardware is 3356fully initialized and the SCI handler is installed. This allows the _PRW 3357methods to access fields protected by the Global Lock. This will fix systems 3358where a NO_GLOBAL_LOCK exception has been seen during initialization. 3359 3360Converted the ACPI internal object disassemble and display code within the 3361AML debugger to fully table-driven operation, reducing code size and 3362increasing maintainability. 3363 3364Fixed a regression with the ConcatenateResTemplate() ASL operator introduced 3365in the 20051021 release. 3366 3367Implemented support for "local" internal ACPI object types within the 3368debugger "Object" command and the AcpiWalkNamespace external interfaces. 3369These local types include RegionFields, BankFields, IndexFields, Alias, and 3370reference objects. 3371 3372Moved common AML resource handling code into a new file, "utresrc.c". This 3373code is shared by both the Resource Manager and the AML Debugger. 3374 3375Code and Data Size: The current and previous library sizes for the core 3376subsystem are shown below. These are the code and data sizes for the 3377acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3378values do not include any ACPI driver or OSPM code. The debug version of the 3379code includes the debug output trace mechanism and has a much larger code 3380and data size. Note that these values will vary depending on the efficiency 3381of the compiler and the compiler options used during generation. 3382 3383 Previous Release: 3384 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 3385 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 3386 Current Release: 3387 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 3388 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 3389 3390 33912) iASL Compiler/Disassembler: 3392 3393Fixed a problem with very large initializer lists (more than 4000 elements) 3394for both Buffer and Package objects where the parse stack could overflow. 3395 3396Enhanced the pre-compile source code scan for non-ASCII characters to ignore 3397characters within comment fields. The scan is now always performed and is no 3398longer optional, detecting invalid characters within a source file 3399immediately rather than during the parse phase or later. 3400 3401Enhanced the ASL grammar definition to force early reductions on all list- 3402style grammar elements so that the overall parse stack usage is greatly 3403reduced. This should improve performance and reduce the possibility of parse 3404stack overflow. 3405 3406Eliminated all reduce/reduce conflicts in the iASL parser generation. Also, 3407with the addition of a %expected statement, the compiler generates from 3408source with no warnings. 3409 3410Fixed a possible segment fault in the disassembler if the input filename 3411does not contain a "dot" extension (Thomas Renninger). 3412 3413---------------------------------------- 341421 October 2005. Summary of changes for version 20051021: 3415 34161) ACPI CA Core Subsystem: 3417 3418Implemented support for the EM64T and other x86-64 processors. This 3419essentially entails recognizing that these processors support non-aligned 3420memory transfers. Previously, all 64-bit processors were assumed to lack 3421hardware support for non-aligned transfers. 3422 3423Completed conversion of the Resource Manager to nearly full table-driven 3424operation. Specifically, the resource conversion code (convert AML to 3425internal format and the reverse) and the debug code to dump internal 3426resource descriptors are fully table-driven, reducing code and data size and 3427improving maintainability. 3428 3429The OSL interfaces for Acquire and Release Lock now use a 64-bit flag word 3430on 64-bit processors instead of a fixed 32-bit word. (With assistance from 3431Alexey Starikovskiy) 3432 3433Implemented support within the resource conversion code for the Type- 3434Specific byte within the various ACPI 3.0 *WordSpace macros. 3435 3436Fixed some issues within the resource conversion code for the type-specific 3437flags for both Memory and I/O address resource descriptors. For Memory, 3438implemented support for the MTP and TTP flags. For I/O, split the TRS and 3439TTP flags into two separate fields. 3440 3441Code and Data Size: The current and previous library sizes for the core 3442subsystem are shown below. These are the code and data sizes for the 3443acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3444values do not include any ACPI driver or OSPM code. The debug version of the 3445code includes the debug output trace mechanism and has a much larger code 3446and data size. Note that these values will vary depending on the efficiency 3447of the compiler and the compiler options used during generation. 3448 3449 Previous Release: 3450 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 3451 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 3452 Current Release: 3453 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 3454 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 3455 3456 3457 34582) iASL Compiler/Disassembler: 3459 3460Relaxed a compiler restriction that disallowed a ResourceIndex byte if the 3461corresponding ResourceSource string was not also present in a resource 3462descriptor declaration. This restriction caused problems with existing 3463AML/ASL code that includes the Index byte without the string. When such AML 3464was disassembled, it could not be compiled without modification. Further, 3465the modified code created a resource template with a different size than the 3466original, breaking code that used fixed offsets into the resource template 3467buffer. 3468 3469Removed a recent feature of the disassembler to ignore a lone ResourceIndex 3470byte. This byte is now emitted if present so that the exact AML can be 3471reproduced when the disassembled code is recompiled. 3472 3473Improved comments and text alignment for the resource descriptor code 3474emitted by the disassembler. 3475 3476Implemented disassembler support for the ACPI 3.0 AccessSize field within a 3477Register() resource descriptor. 3478 3479---------------------------------------- 348030 September 2005. Summary of changes for version 20050930: 3481 34821) ACPI CA Core Subsystem: 3483 3484Completed a major overhaul of the Resource Manager code - specifically, 3485optimizations in the area of the AML/internal resource conversion code. The 3486code has been optimized to simplify and eliminate duplicated code, CPU stack 3487use has been decreased by optimizing function parameters and local 3488variables, and naming conventions across the manager have been standardized 3489for clarity and ease of maintenance (this includes function, parameter, 3490variable, and struct/typedef names.) The update may force changes in some 3491driver code, depending on how resources are handled by the host OS. 3492 3493All Resource Manager dispatch and information tables have been moved to a 3494single location for clarity and ease of maintenance. One new file was 3495created, named "rsinfo.c". 3496 3497The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to 3498guarantee that the argument is not evaluated twice, making them less prone 3499to macro side-effects. However, since there exists the possibility of 3500additional stack use if a particular compiler cannot optimize them (such as 3501in the debug generation case), the original macros are optionally available. 3502Note that some invocations of the return_VALUE macro may now cause size 3503mismatch warnings; the return_UINT8 and return_UINT32 macros are provided to 3504eliminate these. (From Randy Dunlap) 3505 3506Implemented a new mechanism to enable debug tracing for individual control 3507methods. A new external interface, AcpiDebugTrace, is provided to enable 3508this mechanism. The intent is to allow the host OS to easily enable and 3509disable tracing for problematic control methods. This interface can be 3510easily exposed to a user or debugger interface if desired. See the file 3511psxface.c for details. 3512 3513AcpiUtCallocate will now return a valid pointer if a length of zero is 3514specified - a length of one is used and a warning is issued. This matches 3515the behavior of AcpiUtAllocate. 3516 3517Code and Data Size: The current and previous library sizes for the core 3518subsystem are shown below. These are the code and data sizes for the 3519acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3520values do not include any ACPI driver or OSPM code. The debug version of the 3521code includes the debug output trace mechanism and has a much larger code 3522and data size. Note that these values will vary depending on the efficiency 3523of the compiler and the compiler options used during generation. 3524 3525 Previous Release: 3526 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 3527 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 3528 Current Release: 3529 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 3530 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 3531 3532 35332) iASL Compiler/Disassembler: 3534 3535A remark is issued if the effective compile-time length of a package or 3536buffer is zero. Previously, this was a warning. 3537 3538---------------------------------------- 353916 September 2005. Summary of changes for version 20050916: 3540 35411) ACPI CA Core Subsystem: 3542 3543Fixed a problem within the Resource Manager where support for the Generic 3544Register descriptor was not fully implemented. This descriptor is now fully 3545recognized, parsed, disassembled, and displayed. 3546 3547Completely restructured the Resource Manager code to utilize table-driven 3548dispatch and lookup, eliminating many of the large switch() statements. This 3549reduces overall subsystem code size and code complexity. Affects the 3550resource parsing and construction, disassembly, and debug dump output. 3551 3552Cleaned up and restructured the debug dump output for all resource 3553descriptors. Improved readability of the output and reduced code size. 3554 3555Fixed a problem where changes to internal data structures caused the 3556optional ACPI_MUTEX_DEBUG code to fail compilation if specified. 3557 3558Code and Data Size: The current and previous library sizes for the core 3559subsystem are shown below. These are the code and data sizes for the 3560acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3561values do not include any ACPI driver or OSPM code. The debug version of the 3562code includes the debug output trace mechanism and has a much larger code 3563and data size. Note that these values will vary depending on the efficiency 3564of the compiler and the compiler options used during generation. 3565 3566 Previous Release: 3567 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 3568 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 3569 Current Release: 3570 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 3571 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 3572 3573 35742) iASL Compiler/Disassembler: 3575 3576Updated the disassembler to automatically insert an EndDependentFn() macro 3577into the ASL stream if this macro is missing in the original AML code, 3578simplifying compilation of the resulting ASL module. 3579 3580Fixed a problem in the disassembler where a disassembled ResourceSource 3581string (within a large resource descriptor) was not surrounded by quotes and 3582not followed by a comma, causing errors when the resulting ASL module was 3583compiled. Also, escape sequences within a ResourceSource string are now 3584handled correctly (especially "\\") 3585 3586---------------------------------------- 358702 September 2005. Summary of changes for version 20050902: 3588 35891) ACPI CA Core Subsystem: 3590 3591Fixed a problem with the internal Owner ID allocation and deallocation 3592mechanisms for control method execution and recursive method invocation. 3593This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId" 3594messages seen on some systems. Recursive method invocation depth is 3595currently limited to 255. (Alexey Starikovskiy) 3596 3597Completely eliminated all vestiges of support for the "module-level 3598executable code" until this support is fully implemented and debugged. This 3599should eliminate the NO_RETURN_VALUE exceptions seen during table load on 3600some systems that invoke this support. 3601 3602Fixed a problem within the resource manager code where the transaction flags 3603for a 64-bit address descriptor were handled incorrectly in the type- 3604specific flag byte. 3605 3606Consolidated duplicate code within the address descriptor resource manager 3607code, reducing overall subsystem code size. 3608 3609Fixed a fault when using the AML debugger "disassemble" command to 3610disassemble individual control methods. 3611 3612Removed references to the "release_current" directory within the Unix 3613release package. 3614 3615Code and Data Size: The current and previous core subsystem library sizes 3616are shown below. These are the code and data sizes for the acpica.lib 3617produced by the Microsoft Visual C++ 6.0 compiler. These values do not 3618include any ACPI driver or OSPM code. The debug version of the code includes 3619the debug output trace mechanism and has a much larger code and data size. 3620Note that these values will vary depending on the efficiency of the compiler 3621and the compiler options used during generation. 3622 3623 Previous Release: 3624 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 3625 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 3626 Current Release: 3627 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 3628 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 3629 3630 36312) iASL Compiler/Disassembler: 3632 3633Implemented an error check for illegal duplicate values in the interrupt and 3634dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and 3635Interrupt(). 3636 3637Implemented error checking for the Irq() and IrqNoFlags() macros to detect 3638too many values in the interrupt list (16 max) and invalid values in the 3639list (range 0 - 15) 3640 3641The maximum length string literal within an ASL file is now restricted to 3642200 characters as per the ACPI specification. 3643 3644Fixed a fault when using the -ln option (generate namespace listing). 3645 3646Implemented an error check to determine if a DescriptorName within a 3647resource descriptor has already been used within the current scope. 3648 3649---------------------------------------- 365015 August 2005. Summary of changes for version 20050815: 3651 36521) ACPI CA Core Subsystem: 3653 3654Implemented a full bytewise compare to determine if a table load request is 3655attempting to load a duplicate table. The compare is performed if the table 3656signatures and table lengths match. This will allow different tables with 3657the same OEM Table ID and revision to be loaded - probably against the ACPI 3658specification, but discovered in the field nonetheless. 3659 3660Added the changes.txt logfile to each of the zipped release packages. 3661 3662Code and Data Size: Current and previous core subsystem library sizes are 3663shown below. These are the code and data sizes for the acpica.lib produced 3664by the Microsoft Visual C++ 6.0 compiler, and these values do not include 3665any ACPI driver or OSPM code. The debug version of the code includes the 3666debug output trace mechanism and has a much larger code and data size. Note 3667that these values will vary depending on the efficiency of the compiler and 3668the compiler options used during generation. 3669 3670 Previous Release: 3671 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 3672 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 3673 Current Release: 3674 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 3675 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 3676 3677 36782) iASL Compiler/Disassembler: 3679 3680Fixed a problem where incorrect AML code could be generated for Package 3681objects if optimization is disabled (via the -oa switch). 3682 3683Fixed a problem with where incorrect AML code is generated for variable- 3684length packages when the package length is not specified and the number of 3685initializer values is greater than 255. 3686 3687 3688---------------------------------------- 368929 July 2005. Summary of changes for version 20050729: 3690 36911) ACPI CA Core Subsystem: 3692 3693Implemented support to ignore an attempt to install/load a particular ACPI 3694table more than once. Apparently there exists BIOS code that repeatedly 3695attempts to load the same SSDT upon certain events. With assistance from 3696Venkatesh Pallipadi. 3697 3698Restructured the main interface to the AML parser in order to correctly 3699handle all exceptional conditions. This will prevent leakage of the OwnerId 3700resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on some 3701machines. With assistance from Alexey Starikovskiy. 3702 3703Support for "module level code" has been disabled in this version due to a 3704number of issues that have appeared on various machines. The support can be 3705enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem 3706compilation. When the issues are fully resolved, the code will be enabled by 3707default again. 3708 3709Modified the internal functions for debug print support to define the 3710FunctionName parameter as a (const char *) for compatibility with compiler 3711built-in macros such as __FUNCTION__, etc. 3712 3713Linted the entire ACPICA source tree for both 32-bit and 64-bit. 3714 3715Implemented support to display an object count summary for the AML Debugger 3716commands Object and Methods. 3717 3718Code and Data Size: Current and previous core subsystem library sizes are 3719shown below. These are the code and data sizes for the acpica.lib produced 3720by the Microsoft Visual C++ 6.0 compiler, and these values do not include 3721any ACPI driver or OSPM code. The debug version of the code includes the 3722debug output trace mechanism and has a much larger code and data size. Note 3723that these values will vary depending on the efficiency of the compiler and 3724the compiler options used during generation. 3725 3726 Previous Release: 3727 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 3728 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 3729 Current Release: 3730 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 3731 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 3732 3733 37342) iASL Compiler/Disassembler: 3735 3736Fixed a regression that appeared in the 20050708 version of the compiler 3737where an error message was inadvertently emitted for invocations of the _OSI 3738reserved control method. 3739 3740---------------------------------------- 374108 July 2005. Summary of changes for version 20050708: 3742 37431) ACPI CA Core Subsystem: 3744 3745The use of the CPU stack in the debug version of the subsystem has been 3746considerably reduced. Previously, a debug structure was declared in every 3747function that used the debug macros. This structure has been removed in 3748favor of declaring the individual elements as parameters to the debug 3749functions. This reduces the cumulative stack use during nested execution of 3750ACPI function calls at the cost of a small increase in the code size of the 3751debug version of the subsystem. With assistance from Alexey Starikovskiy and 3752Len Brown. 3753 3754Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent 3755headers to define a macro that will return the current function name at 3756runtime (such as __FUNCTION__ or _func_, etc.) The function name is used by 3757the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the 3758compiler-dependent header, the function name is saved on the CPU stack (one 3759pointer per function.) This mechanism is used because apparently there 3760exists no standard ANSI-C defined macro that that returns the function name. 3761 3762Redesigned and reimplemented the "Owner ID" mechanism used to track 3763namespace objects created/deleted by ACPI tables and control method 3764execution. A bitmap is now used to allocate and free the IDs, thus solving 3765the wraparound problem present in the previous implementation. The size of 3766the namespace node descriptor was reduced by 2 bytes as a result (Alexey 3767Starikovskiy). 3768 3769Removed the UINT32_BIT and UINT16_BIT types that were used for the bitfield 3770flag definitions within the headers for the predefined ACPI tables. These 3771have been replaced by UINT8_BIT in order to increase the code portability of 3772the subsystem. If the use of UINT8 remains a problem, we may be forced to 3773eliminate bitfields entirely because of a lack of portability. 3774 3775Enhanced the performance of the AcpiUtUpdateObjectReference procedure. This 3776is a frequently used function and this improvement increases the performance 3777of the entire subsystem (Alexey Starikovskiy). 3778 3779Fixed several possible memory leaks and the inverse - premature object 3780deletion (Alexey Starikovskiy). 3781 3782Code and Data Size: Current and previous core subsystem library sizes are 3783shown below. These are the code and data sizes for the acpica.lib produced 3784by the Microsoft Visual C++ 6.0 compiler, and these values do not include 3785any ACPI driver or OSPM code. The debug version of the code includes the 3786debug output trace mechanism and has a much larger code and data size. Note 3787that these values will vary depending on the efficiency of the compiler and 3788the compiler options used during generation. 3789 3790 Previous Release: 3791 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 3792 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 3793 Current Release: 3794 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 3795 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 3796 3797---------------------------------------- 379824 June 2005. Summary of changes for version 20050624: 3799 38001) ACPI CA Core Subsystem: 3801 3802Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for 3803the host-defined cache object. This allows the OSL implementation to define 3804and type this object in any manner desired, simplifying the OSL 3805implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for 3806Linux, and should be defined in the OS-specific header file for other 3807operating systems as required. 3808 3809Changed the interface to AcpiOsAcquireObject to directly return the 3810requested object as the function return (instead of ACPI_STATUS.) This 3811change was made for performance reasons, since this is the purpose of the 3812interface in the first place. AcpiOsAcquireObject is now similar to the 3813AcpiOsAllocate interface. 3814 3815Implemented a new AML debugger command named Businfo. This command displays 3816information about all devices that have an associate _PRT object. The _ADR, 3817_HID, _UID, and _CID are displayed for these devices. 3818 3819Modified the initialization sequence in AcpiInitializeSubsystem to call the 3820OSL interface AcpiOslInitialize first, before any local initialization. This 3821change was required because the global initialization now calls OSL 3822interfaces. 3823 3824Enhanced the Dump command to display the entire contents of Package objects 3825(including all sub-objects and their values.) 3826 3827Restructured the code base to split some files because of size and/or 3828because the code logically belonged in a separate file. New files are listed 3829below. All makefiles and project files included in the ACPI CA release have 3830been updated. 3831 utilities/utcache.c /* Local cache interfaces */ 3832 utilities/utmutex.c /* Local mutex support */ 3833 utilities/utstate.c /* State object support */ 3834 interpreter/parser/psloop.c /* Main AML parse loop */ 3835 3836Code and Data Size: Current and previous core subsystem library sizes are 3837shown below. These are the code and data sizes for the acpica.lib produced 3838by the Microsoft Visual C++ 6.0 compiler, and these values do not include 3839any ACPI driver or OSPM code. The debug version of the code includes the 3840debug output trace mechanism and has a much larger code and data size. Note 3841that these values will vary depending on the efficiency of the compiler and 3842the compiler options used during generation. 3843 3844 Previous Release: 3845 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 3846 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 3847 Current Release: 3848 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 3849 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 3850 3851 38522) iASL Compiler/Disassembler: 3853 3854Fixed a regression introduced in version 20050513 where the use of a Package 3855object within a Case() statement caused a compile time exception. The 3856original behavior has been restored (a Match() operator is emitted.) 3857 3858---------------------------------------- 385917 June 2005. Summary of changes for version 20050617: 3860 38611) ACPI CA Core Subsystem: 3862 3863Moved the object cache operations into the OS interface layer (OSL) to allow 3864the host OS to handle these operations if desired (for example, the Linux 3865OSL will invoke the slab allocator). This support is optional; the compile 3866time define ACPI_USE_LOCAL_CACHE may be used to utilize the original cache 3867code in the ACPI CA core. The new OSL interfaces are shown below. See 3868utalloc.c for an example implementation, and acpiosxf.h for the exact 3869interface definitions. With assistance from Alexey Starikovskiy. 3870 AcpiOsCreateCache 3871 AcpiOsDeleteCache 3872 AcpiOsPurgeCache 3873 AcpiOsAcquireObject 3874 AcpiOsReleaseObject 3875 3876Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to return 3877and restore a flags parameter. This fits better with many OS lock models. 3878Note: the current execution state (interrupt handler or not) is no longer 3879passed to these interfaces. If necessary, the OSL must determine this state 3880by itself, a simple and fast operation. With assistance from Alexey 3881Starikovskiy. 3882 3883Fixed a problem in the ACPI table handling where a valid XSDT was assumed 3884present if the revision of the RSDP was 2 or greater. According to the ACPI 3885specification, the XSDT is optional in all cases, and the table manager 3886therefore now checks for both an RSDP >=2 and a valid XSDT pointer. 3887Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs contain 3888only the RSDT. 3889 3890Fixed an interpreter problem with the Mid() operator in the case of an input 3891string where the resulting output string is of zero length. It now correctly 3892returns a valid, null terminated string object instead of a string object 3893with a null pointer. 3894 3895Fixed a problem with the control method argument handling to allow a store 3896to an Arg object that already contains an object of type Device. The Device 3897object is now correctly overwritten. Previously, an error was returned. 3898 3899 3900Enhanced the debugger Find command to emit object values in addition to the 3901found object pathnames. The output format is the same as the dump namespace 3902command. 3903 3904Enhanced the debugger Set command. It now has the ability to set the value 3905of any Named integer object in the namespace (Previously, only method locals 3906and args could be set.) 3907 3908Code and Data Size: Current and previous core subsystem library sizes are 3909shown below. These are the code and data sizes for the acpica.lib produced 3910by the Microsoft Visual C++ 6.0 compiler, and these values do not include 3911any ACPI driver or OSPM code. The debug version of the code includes the 3912debug output trace mechanism and has a much larger code and data size. Note 3913that these values will vary depending on the efficiency of the compiler and 3914the compiler options used during generation. 3915 3916 Previous Release: 3917 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 3918 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 3919 Current Release: 3920 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 3921 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 3922 3923 39242) iASL Compiler/Disassembler: 3925 3926Fixed a regression in the disassembler where if/else/while constructs were 3927output incorrectly. This problem was introduced in the previous release 3928(20050526). This problem also affected the single-step disassembly in the 3929debugger. 3930 3931Fixed a problem where compiling the reserved _OSI method would randomly (but 3932rarely) produce compile errors. 3933 3934Enhanced the disassembler to emit compilable code in the face of incorrect 3935AML resource descriptors. If the optional ResourceSourceIndex is present, 3936but the ResourceSource is not, do not emit the ResourceSourceIndex in the 3937disassembly. Otherwise, the resulting code cannot be compiled without 3938errors. 3939 3940---------------------------------------- 394126 May 2005. Summary of changes for version 20050526: 3942 39431) ACPI CA Core Subsystem: 3944 3945Implemented support to execute Type 1 and Type 2 AML opcodes appearing at 3946the module level (not within a control method.) These opcodes are executed 3947exactly once at the time the table is loaded. This type of code was legal up 3948until the release of ACPI 2.0B (2002) and is now supported within ACPI CA in 3949order to provide backwards compatibility with earlier BIOS implementations. 3950This eliminates the "Encountered executable code at module level" warning 3951that was previously generated upon detection of such code. 3952 3953Fixed a problem in the interpreter where an AE_NOT_FOUND exception could 3954inadvertently be generated during the lookup of namespace objects in the 3955second pass parse of ACPI tables and control methods. It appears that this 3956problem could occur during the resolution of forward references to namespace 3957objects. 3958 3959Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function, 3960corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This 3961allows the deadlock detection debug code to be compiled out in the normal 3962case, improving mutex performance (and overall subsystem performance) 3963considerably. 3964 3965Implemented a handful of miscellaneous fixes for possible memory leaks on 3966error conditions and error handling control paths. These fixes were 3967suggested by FreeBSD and the Coverity Prevent source code analysis tool. 3968 3969Added a check for a null RSDT pointer in AcpiGetFirmwareTable (tbxfroot.c) 3970to prevent a fault in this error case. 3971 3972Code and Data Size: Current and previous core subsystem library sizes are 3973shown below. These are the code and data sizes for the acpica.lib produced 3974by the Microsoft Visual C++ 6.0 compiler, and these values do not include 3975any ACPI driver or OSPM code. The debug version of the code includes the 3976debug output trace mechanism and has a much larger code and data size. Note 3977that these values will vary depending on the efficiency of the compiler and 3978the compiler options used during generation. 3979 3980 Previous Release: 3981 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 3982 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 3983 Current Release: 3984 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 3985 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 3986 3987 39882) iASL Compiler/Disassembler: 3989 3990Implemented support to allow Type 1 and Type 2 ASL operators to appear at 3991the module level (not within a control method.) These operators will be 3992executed once at the time the table is loaded. This type of code was legal 3993up until the release of ACPI 2.0B (2002) and is now supported by the iASL 3994compiler in order to provide backwards compatibility with earlier BIOS ASL 3995code. 3996 3997The ACPI integer width (specified via the table revision ID or the -r 3998override, 32 or 64 bits) is now used internally during compile-time constant 3999folding to ensure that constants are truncated to 32 bits if necessary. 4000Previously, the revision ID value was only emitted in the AML table header. 4001 4002An error message is now generated for the Mutex and Method operators if the 4003SyncLevel parameter is outside the legal range of 0 through 15. 4004 4005Fixed a problem with the Method operator ParameterTypes list handling (ACPI 40063.0). Previously, more than 2 types or 2 arguments generated a syntax error. 4007The actual underlying implementation of method argument typechecking is 4008still under development, however. 4009 4010---------------------------------------- 401113 May 2005. Summary of changes for version 20050513: 4012 40131) ACPI CA Core Subsystem: 4014 4015Implemented support for PCI Express root bridges -- added support for device 4016PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup. 4017 4018The interpreter now automatically truncates incoming 64-bit constants to 32 4019bits if currently executing out of a 32-bit ACPI table (Revision < 2). This 4020also affects the iASL compiler constant folding. (Note: as per below, the 4021iASL compiler no longer allows 64-bit constants within 32-bit tables.) 4022 4023Fixed a problem where string and buffer objects with "static" pointers 4024(pointers to initialization data within an ACPI table) were not handled 4025consistently. The internal object copy operation now always copies the data 4026to a newly allocated buffer, regardless of whether the source object is 4027static or not. 4028 4029Fixed a problem with the FromBCD operator where an implicit result 4030conversion was improperly performed while storing the result to the target 4031operand. Since this is an "explicit conversion" operator, the implicit 4032conversion should never be performed on the output. 4033 4034Fixed a problem with the CopyObject operator where a copy to an existing 4035named object did not always completely overwrite the existing object stored 4036at name. Specifically, a buffer-to-buffer copy did not delete the existing 4037buffer. 4038 4039Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces and 4040structs for consistency. 4041 4042Code and Data Size: Current and previous core subsystem library sizes are 4043shown below. These are the code and data sizes for the acpica.lib produced 4044by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4045any ACPI driver or OSPM code. The debug version of the code includes the 4046debug output trace mechanism and has a much larger code and data size. Note 4047that these values will vary depending on the efficiency of the compiler and 4048the compiler options used during generation. 4049 4050 Previous Release: 4051 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 4052 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 4053 Current Release: (Same sizes) 4054 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 4055 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 4056 4057 40582) iASL Compiler/Disassembler: 4059 4060The compiler now emits a warning if an attempt is made to generate a 64-bit 4061integer constant from within a 32-bit ACPI table (Revision < 2). The integer 4062is truncated to 32 bits. 4063 4064Fixed a problem with large package objects: if the static length of the 4065package is greater than 255, the "variable length package" opcode is 4066emitted. Previously, this caused an error. This requires an update to the 4067ACPI spec, since it currently (incorrectly) states that packages larger than 4068255 elements are not allowed. 4069 4070The disassembler now correctly handles variable length packages and packages 4071larger than 255 elements. 4072 4073---------------------------------------- 407408 April 2005. Summary of changes for version 20050408: 4075 40761) ACPI CA Core Subsystem: 4077 4078Fixed three cases in the interpreter where an "index" argument to an ASL 4079function was still (internally) 32 bits instead of the required 64 bits. 4080This was the Index argument to the Index, Mid, and Match operators. 4081 4082The "strupr" function is now permanently local (AcpiUtStrupr), since this is 4083not a POSIX-defined function and not present in most kernel-level C 4084libraries. All references to the C library strupr function have been removed 4085from the headers. 4086 4087Completed the deployment of static functions/prototypes. All prototypes with 4088the static attribute have been moved from the headers to the owning C file. 4089 4090Implemented an extract option (-e) for the AcpiBin utility (AML binary 4091utility). This option allows the utility to extract individual ACPI tables 4092from the output of AcpiDmp. It provides the same functionality of the 4093acpixtract.pl perl script without the worry of setting the correct perl 4094options. AcpiBin runs on Windows and has not yet been generated/validated in 4095the Linux/Unix environment (but should be soon). 4096 4097Updated and fixed the table dump option for AcpiBin (-d). This option 4098converts a single ACPI table to a hex/ascii file, similar to the output of 4099AcpiDmp. 4100 4101Code and Data Size: Current and previous core subsystem library sizes are 4102shown below. These are the code and data sizes for the acpica.lib produced 4103by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4104any ACPI driver or OSPM code. The debug version of the code includes the 4105debug output trace mechanism and has a much larger code and data size. Note 4106that these values will vary depending on the efficiency of the compiler and 4107the compiler options used during generation. 4108 4109 Previous Release: 4110 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 4111 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 4112 Current Release: 4113 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 4114 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 4115 4116 41172) iASL Compiler/Disassembler: 4118 4119Disassembler fix: Added a check to ensure that the table length found in the 4120ACPI table header within the input file is not longer than the actual input 4121file size. This indicates some kind of file or table corruption. 4122 4123---------------------------------------- 412429 March 2005. Summary of changes for version 20050329: 4125 41261) ACPI CA Core Subsystem: 4127 4128An error is now generated if an attempt is made to create a Buffer Field of 4129length zero (A CreateField with a length operand of zero.) 4130 4131The interpreter now issues a warning whenever executable code at the module 4132level is detected during ACPI table load. This will give some idea of the 4133prevalence of this type of code. 4134 4135Implemented support for references to named objects (other than control 4136methods) within package objects. 4137 4138Enhanced package object output for the debug object. Package objects are now 4139completely dumped, showing all elements. 4140 4141Enhanced miscellaneous object output for the debug object. Any object can 4142now be written to the debug object (for example, a device object can be 4143written, and the type of the object will be displayed.) 4144 4145The "static" qualifier has been added to all local functions across both the 4146core subsystem and the iASL compiler. 4147 4148The number of "long" lines (> 80 chars) within the source has been 4149significantly reduced, by about 1/3. 4150 4151Cleaned up all header files to ensure that all CA/iASL functions are 4152prototyped (even static functions) and the formatting is consistent. 4153 4154Two new header files have been added, acopcode.h and acnames.h. 4155 4156Removed several obsolete functions that were no longer used. 4157 4158Code and Data Size: Current and previous core subsystem library sizes are 4159shown below. These are the code and data sizes for the acpica.lib produced 4160by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4161any ACPI driver or OSPM code. The debug version of the code includes the 4162debug output trace mechanism and has a much larger code and data size. Note 4163that these values will vary depending on the efficiency of the compiler and 4164the compiler options used during generation. 4165 4166 Previous Release: 4167 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4168 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 4169 Current Release: 4170 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 4171 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 4172 4173 4174 41752) iASL Compiler/Disassembler: 4176 4177Fixed a problem with the resource descriptor generation/support. For the 4178ResourceSourceIndex and the ResourceSource fields, both must be present, or 4179both must be not present - can't have one without the other. 4180 4181The compiler now returns non-zero from the main procedure if any errors have 4182occurred during the compilation. 4183 4184 4185---------------------------------------- 418609 March 2005. Summary of changes for version 20050309: 4187 41881) ACPI CA Core Subsystem: 4189 4190The string-to-buffer implicit conversion code has been modified again after 4191a change to the ACPI specification. In order to match the behavior of the 4192other major ACPI implementation, the target buffer is no longer truncated if 4193the source string is smaller than an existing target buffer. This change 4194requires an update to the ACPI spec, and should eliminate the recent 4195AE_AML_BUFFER_LIMIT issues. 4196 4197The "implicit return" support was rewritten to a new algorithm that solves 4198the general case. Rather than attempt to determine when a method is about to 4199exit, the result of every ASL operator is saved momentarily until the very 4200next ASL operator is executed. Therefore, no matter how the method exits, 4201there will always be a saved implicit return value. This feature is only 4202enabled with the AcpiGbl_EnableInterpreterSlack flag, and should eliminate 4203AE_AML_NO_RETURN_VALUE errors when enabled. 4204 4205Implemented implicit conversion support for the predicate (operand) of the 4206If, Else, and While operators. String and Buffer arguments are automatically 4207converted to Integers. 4208 4209Changed the string-to-integer conversion behavior to match the new ACPI 4210errata: "If no integer object exists, a new integer is created. The ASCII 4211string is interpreted as a hexadecimal constant. Each string character is 4212interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting 4213with the first character as the most significant digit, and ending with the 4214first non-hexadecimal character or end-of-string." This means that the first 4215non-hex character terminates the conversion and this is the code that was 4216changed. 4217 4218Fixed a problem where the ObjectType operator would fail (fault) when used 4219on an Index of a Package which pointed to a null package element. The 4220operator now properly returns zero (Uninitialized) in this case. 4221 4222Fixed a problem where the While operator used excessive memory by not 4223properly popping the result stack during execution. There was no memory leak 4224after execution, however. (Code provided by Valery Podrezov.) 4225 4226Fixed a problem where references to control methods within Package objects 4227caused the method to be invoked, instead of producing a reference object 4228pointing to the method. 4229 4230Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) to 4231improve performance and reduce code size. (Code provided by Alexey 4232Starikovskiy.) 4233 4234Code and Data Size: Current and previous core subsystem library sizes are 4235shown below. These are the code and data sizes for the acpica.lib produced 4236by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4237any ACPI driver or OSPM code. The debug version of the code includes the 4238debug output trace mechanism and has a much larger code and data size. Note 4239that these values will vary depending on the efficiency of the compiler and 4240the compiler options used during generation. 4241 4242 Previous Release: 4243 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4244 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 4245 Current Release: 4246 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4247 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 4248 4249 42502) iASL Compiler/Disassembler: 4251 4252Fixed a problem with the Return operator with no arguments. Since the AML 4253grammar for the byte encoding requires an operand for the Return opcode, the 4254compiler now emits a Return(Zero) for this case. An ACPI specification 4255update has been written for this case. 4256 4257For tables other than the DSDT, namepath optimization is automatically 4258disabled. This is because SSDTs can be loaded anywhere in the namespace, the 4259compiler has no knowledge of where, and thus cannot optimize namepaths. 4260 4261Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was 4262inadvertently omitted from the ACPI specification, and will require an 4263update to the spec. 4264 4265The source file scan for ASCII characters is now optional (-a). This change 4266was made because some vendors place non-ascii characters within comments. 4267However, the scan is simply a brute-force byte compare to ensure all 4268characters in the file are in the range 0x00 to 0x7F. 4269 4270Fixed a problem with the CondRefOf operator where the compiler was 4271inappropriately checking for the existence of the target. Since the point of 4272the operator is to check for the existence of the target at run-time, the 4273compiler no longer checks for the target existence. 4274 4275Fixed a problem where errors generated from the internal AML interpreter 4276during constant folding were not handled properly, causing a fault. 4277 4278Fixed a problem with overly aggressive range checking for the Stall 4279operator. The valid range (max 255) is now only checked if the operand is of 4280type Integer. All other operand types cannot be statically checked. 4281 4282Fixed a problem where control method references within the RefOf, DeRefOf, 4283and ObjectType operators were not treated properly. They are now treated as 4284actual references, not method invocations. 4285 4286Fixed and enhanced the "list namespace" option (-ln). This option was broken 4287a number of releases ago. 4288 4289Improved error handling for the Field, IndexField, and BankField operators. 4290The compiler now cleanly reports and recovers from errors in the field 4291component (FieldUnit) list. 4292 4293Fixed a disassembler problem where the optional ResourceDescriptor fields 4294TRS and TTP were not always handled correctly. 4295 4296Disassembler - Comments in output now use "//" instead of "/*" 4297 4298---------------------------------------- 429928 February 2005. Summary of changes for version 20050228: 4300 43011) ACPI CA Core Subsystem: 4302 4303Fixed a problem where the result of an Index() operator (an object 4304reference) must increment the reference count on the target object for the 4305life of the object reference. 4306 4307Implemented AML Interpreter and Debugger support for the new ACPI 3.0 4308Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and WordSpace 4309resource descriptors. 4310 4311Implemented support in the _OSI method for the ACPI 3.0 "Extended Address 4312Space Descriptor" string, indicating interpreter support for the descriptors 4313above. 4314 4315Implemented header support for the new ACPI 3.0 FADT flag bits. 4316 4317Implemented header support for the new ACPI 3.0 PCI Express bits for the PM1 4318status/enable registers. 4319 4320Updated header support for the MADT processor local Apic struct and MADT 4321platform interrupt source struct for new ACPI 3.0 fields. 4322 4323Implemented header support for the SRAT and SLIT ACPI tables. 4324 4325Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" flag 4326at runtime. 4327 4328Code and Data Size: Current and previous core subsystem library sizes are 4329shown below. These are the code and data sizes for the acpica.lib produced 4330by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4331any ACPI driver or OSPM code. The debug version of the code includes the 4332debug output trace mechanism and has a much larger code and data size. Note 4333that these values will vary depending on the efficiency of the compiler and 4334the compiler options used during generation. 4335 4336 Previous Release: 4337 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 4338 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 4339 Current Release: 4340 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4341 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 4342 4343 43442) iASL Compiler/Disassembler: 4345 4346Fixed a problem with the internal 64-bit String-to-integer conversion with 4347strings less than two characters long. 4348 4349Fixed a problem with constant folding where the result of the Index() 4350operator can not be considered a constant. This means that Index() cannot be 4351a type3 opcode and this will require an update to the ACPI specification. 4352 4353Disassembler: Implemented support for the TTP, MTP, and TRS resource 4354descriptor fields. These fields were inadvertently ignored and not output in 4355the disassembly of the resource descriptor. 4356 4357 4358 ---------------------------------------- 435911 February 2005. Summary of changes for version 20050211: 4360 43611) ACPI CA Core Subsystem: 4362 4363Implemented ACPI 3.0 support for implicit conversion within the Match() 4364operator. MatchObjects can now be of type integer, buffer, or string instead 4365of just type integer. Package elements are implicitly converted to the type 4366of the MatchObject. This change aligns the behavior of Match() with the 4367behavior of the other logical operators (LLess(), etc.) It also requires an 4368errata change to the ACPI specification as this support was intended for 4369ACPI 3.0, but was inadvertently omitted. 4370 4371Fixed a problem with the internal implicit "to buffer" conversion. Strings 4372that are converted to buffers will cause buffer truncation if the string is 4373smaller than the target buffer. Integers that are converted to buffers will 4374not cause buffer truncation, only zero extension (both as per the ACPI 4375spec.) The problem was introduced when code was added to truncate the 4376buffer, but this should not be performed in all cases, only the string case. 4377 4378Fixed a problem with the Buffer and Package operators where the interpreter 4379would get confused if two such operators were used as operands to an ASL 4380operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result 4381stack was not being popped after the execution of these operators, resulting 4382in an AE_NO_RETURN_VALUE exception. 4383 4384Fixed a problem with constructs of the form Store(Index(...),...). The 4385reference object returned from Index was inadvertently resolved to an actual 4386value. This problem was introduced in version 20050114 when the behavior of 4387Store() was modified to restrict the object types that can be used as the 4388source operand (to match the ACPI specification.) 4389 4390Reduced excessive stack use within the AcpiGetObjectInfo procedure. 4391 4392Added a fix to aclinux.h to allow generation of AcpiExec on Linux. 4393 4394Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct. 4395 4396Code and Data Size: Current and previous core subsystem library sizes are 4397shown below. These are the code and data sizes for the acpica.lib produced 4398by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4399any ACPI driver or OSPM code. The debug version of the code includes the 4400debug output trace mechanism and has a much larger code and data size. Note 4401that these values will vary depending on the efficiency of the compiler and 4402the compiler options used during generation. 4403 4404 Previous Release: 4405 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 4406 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 4407 Current Release: 4408 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 4409 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 4410 4411 44122) iASL Compiler/Disassembler: 4413 4414Fixed a code generation problem in the constant folding optimization code 4415where incorrect code was generated if a constant was reduced to a buffer 4416object (i.e., a reduced type 5 opcode.) 4417 4418Fixed a typechecking problem for the ToBuffer operator. Caused by an 4419incorrect return type in the internal opcode information table. 4420 4421---------------------------------------- 442225 January 2005. Summary of changes for version 20050125: 4423 44241) ACPI CA Core Subsystem: 4425 4426Fixed a recently introduced problem with the Global Lock where the 4427underlying semaphore was not created. This problem was introduced in 4428version 20050114, and caused an AE_AML_NO_OPERAND exception during an 4429Acquire() operation on _GL. 4430 4431The local object cache is now optional, and is disabled by default. Both 4432AcpiExec and the iASL compiler enable the cache because they run in user 4433mode and this enhances their performance. #define ACPI_ENABLE_OBJECT_CACHE 4434to enable the local cache. 4435 4436Fixed an issue in the internal function AcpiUtEvaluateObject concerning the 4437optional "implicit return" support where an error was returned if no return 4438object was expected, but one was implicitly returned. AE_OK is now returned 4439in this case and the implicitly returned object is deleted. 4440AcpiUtEvaluateObject is only occasionally used, and only to execute reserved 4441methods such as _STA and _INI where the return type is known up front. 4442 4443Fixed a few issues with the internal convert-to-integer code. It now returns 4444an error if an attempt is made to convert a null string, a string of only 4445blanks/tabs, or a zero-length buffer. This affects both implicit conversion 4446and explicit conversion via the ToInteger() operator. 4447 4448The internal debug code in AcpiUtAcquireMutex has been commented out. It is 4449not needed for normal operation and should increase the performance of the 4450entire subsystem. The code remains in case it is needed for debug purposes 4451again. 4452 4453The AcpiExec source and makefile are included in the Unix/Linux package for 4454the first time. 4455 4456Code and Data Size: Current and previous core subsystem library sizes are 4457shown below. These are the code and data sizes for the acpica.lib produced 4458by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4459any ACPI driver or OSPM code. The debug version of the code includes the 4460debug output trace mechanism and has a much larger code and data size. Note 4461that these values will vary depending on the efficiency of the compiler and 4462the compiler options used during generation. 4463 4464 Previous Release: 4465 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 4466 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 4467 Current Release: 4468 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 4469 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 4470 44712) iASL Compiler/Disassembler: 4472 4473Switch/Case support: A warning is now issued if the type of the Switch value 4474cannot be determined at compile time. For example, Switch(Arg0) will 4475generate the warning, and the type is assumed to be an integer. As per the 4476ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate the 4477warning. 4478 4479Switch/Case support: Implemented support for buffer and string objects as 4480the switch value. This is an ACPI 3.0 feature, now that LEqual supports 4481buffers and strings. 4482 4483Switch/Case support: The emitted code for the LEqual() comparisons now uses 4484the switch value as the first operand, not the second. The case value is now 4485the second operand, and this allows the case value to be implicitly 4486converted to the type of the switch value, not the other way around. 4487 4488Switch/Case support: Temporary variables are now emitted immediately within 4489the control method, not at the global level. This means that there are now 449036 temps available per-method, not 36 temps per-module as was the case with 4491the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.) 4492 4493---------------------------------------- 449414 January 2005. Summary of changes for version 20050114: 4495 4496Added 2005 copyright to all module headers. This affects every module in 4497the core subsystem, iASL compiler, and the utilities. 4498 44991) ACPI CA Core Subsystem: 4500 4501Fixed an issue with the String-to-Buffer conversion code where the string 4502null terminator was not included in the buffer after conversion, but there 4503is existing ASL that assumes the string null terminator is included. This is 4504the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was 4505introduced in the previous version when the code was updated to correctly 4506set the converted buffer size as per the ACPI specification. The ACPI spec 4507is ambiguous and will be updated to specify that the null terminator must be 4508included in the converted buffer. This also affects the ToBuffer() ASL 4509operator. 4510 4511Fixed a problem with the Mid() ASL/AML operator where it did not work 4512correctly on Buffer objects. Newly created sub-buffers were not being marked 4513as initialized. 4514 4515 4516Fixed a problem in AcpiTbFindTable where incorrect string compares were 4517performed on the OemId and OemTableId table header fields. These fields are 4518not null terminated, so strncmp is now used instead of strcmp. 4519 4520Implemented a restriction on the Store() ASL/AML operator to align the 4521behavior with the ACPI specification. Previously, any object could be used 4522as the source operand. Now, the only objects that may be used are Integers, 4523Buffers, Strings, Packages, Object References, and DDB Handles. If 4524necessary, the original behavior can be restored by enabling the 4525EnableInterpreterSlack flag. 4526 4527Enhanced the optional "implicit return" support to allow an implicit return 4528value from methods that are invoked externally via the AcpiEvaluateObject 4529interface. This enables implicit returns from the _STA and _INI methods, 4530for example. 4531 4532Changed the Revision() ASL/AML operator to return the current version of the 4533AML interpreter, in the YYYYMMDD format. Previously, it incorrectly returned 4534the supported ACPI version (This is the function of the _REV method). 4535 4536Updated the _REV predefined method to return the currently supported version 4537of ACPI, now 3. 4538 4539Implemented batch mode option for the AcpiExec utility (-b). 4540 4541Code and Data Size: Current and previous core subsystem library sizes are 4542shown below. These are the code and data sizes for the acpica.lib produced 4543by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4544any ACPI driver or OSPM code. The debug version of the code includes the 4545debug output trace mechanism and has a much larger code and data size. Note 4546that these values will vary depending on the efficiency of the compiler and 4547the compiler options used during generation. 4548 4549 Previous Release: 4550 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4551 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 4552 Current Release: 4553 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 4554 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 4555 4556---------------------------------------- 455710 December 2004. Summary of changes for version 20041210: 4558 4559ACPI 3.0 support is nearing completion in both the iASL compiler and the 4560ACPI CA core subsystem. 4561 45621) ACPI CA Core Subsystem: 4563 4564Fixed a problem in the ToDecimalString operator where the resulting string 4565length was incorrectly calculated. The length is now calculated exactly, 4566eliminating incorrect AE_STRING_LIMIT exceptions. 4567 4568Fixed a problem in the ToHexString operator to allow a maximum 200 character 4569string to be produced. 4570 4571Fixed a problem in the internal string-to-buffer and buffer-to-buffer copy 4572routine where the length of the resulting buffer was not truncated to the 4573new size (if the target buffer already existed). 4574 4575Code and Data Size: Current and previous core subsystem library sizes are 4576shown below. These are the code and data sizes for the acpica.lib produced 4577by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4578any ACPI driver or OSPM code. The debug version of the code includes the 4579debug output trace mechanism and has a much larger code and data size. Note 4580that these values will vary depending on the efficiency of the compiler and 4581the compiler options used during generation. 4582 4583 Previous Release: 4584 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4585 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 4586 Current Release: 4587 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4588 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 4589 4590 45912) iASL Compiler/Disassembler: 4592 4593Implemented the new ACPI 3.0 resource template macros - DWordSpace, 4594ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace. 4595Includes support in the disassembler. 4596 4597Implemented support for the new (ACPI 3.0) parameter to the Register macro, 4598AccessSize. 4599 4600Fixed a problem where the _HE resource name for the Interrupt macro was 4601referencing bit 0 instead of bit 1. 4602 4603Implemented check for maximum 255 interrupts in the Interrupt macro. 4604 4605Fixed a problem with the predefined resource descriptor names where 4606incorrect AML code was generated if the offset within the resource buffer 4607was 0 or 1. The optimizer shortened the AML code to a single byte opcode 4608but did not update the surrounding package lengths. 4609 4610Changes to the Dma macro: All channels within the channel list must be in 4611the range 0-7. Maximum 8 channels can be specified. BusMaster operand is 4612optional (default is BusMaster). 4613 4614Implemented check for maximum 7 data bytes for the VendorShort macro. 4615 4616The ReadWrite parameter is now optional for the Memory32 and similar macros. 4617 4618---------------------------------------- 461903 December 2004. Summary of changes for version 20041203: 4620 46211) ACPI CA Core Subsystem: 4622 4623The low-level field insertion/extraction code (exfldio) has been completely 4624rewritten to eliminate unnecessary complexity, bugs, and boundary 4625conditions. 4626 4627Fixed a problem in the ToInteger, ToBuffer, ToHexString, and ToDecimalString 4628operators where the input operand could be inadvertently deleted if no 4629conversion was necessary (e.g., if the input to ToInteger was an Integer 4630object.) 4631 4632Fixed a problem with the ToDecimalString and ToHexString where an incorrect 4633exception code was returned if the resulting string would be > 200 chars. 4634AE_STRING_LIMIT is now returned. 4635 4636Fixed a problem with the Concatenate operator where AE_OK was always 4637returned, even if the operation failed. 4638 4639Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128 4640semaphores to be allocated. 4641 4642Code and Data Size: Current and previous core subsystem library sizes are 4643shown below. These are the code and data sizes for the acpica.lib produced 4644by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4645any ACPI driver or OSPM code. The debug version of the code includes the 4646debug output trace mechanism and has a much larger code and data size. Note 4647that these values will vary depending on the efficiency of the compiler and 4648the compiler options used during generation. 4649 4650 Previous Release: 4651 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 4652 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 4653 Current Release: 4654 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4655 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 4656 4657 46582) iASL Compiler/Disassembler: 4659 4660Fixed typechecking for the ObjectType and SizeOf operators. Problem was 4661recently introduced in 20041119. 4662 4663Fixed a problem with the ToUUID macro where the upper nybble of each buffer 4664byte was inadvertently set to zero. 4665 4666---------------------------------------- 466719 November 2004. Summary of changes for version 20041119: 4668 46691) ACPI CA Core Subsystem: 4670 4671Fixed a problem in the internal ConvertToInteger routine where new integers 4672were not truncated to 32 bits for 32-bit ACPI tables. This routine converts 4673buffers and strings to integers. 4674 4675Implemented support to store a value to an Index() on a String object. This 4676is an ACPI 2.0 feature that had not yet been implemented. 4677 4678Implemented new behavior for storing objects to individual package elements 4679(via the Index() operator). The previous behavior was to invoke the implicit 4680conversion rules if an object was already present at the index. The new 4681behavior is to simply delete any existing object and directly store the new 4682object. Although the ACPI specification seems unclear on this subject, other 4683ACPI implementations behave in this manner. (This is the root of the 4684AE_BAD_HEX_CONSTANT issue.) 4685 4686Modified the RSDP memory scan mechanism to support the extended checksum for 4687ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid 4688RSDP signature is found with a valid checksum. 4689 4690Code and Data Size: Current and previous core subsystem library sizes are 4691shown below. These are the code and data sizes for the acpica.lib produced 4692by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4693any ACPI driver or OSPM code. The debug version of the code includes the 4694debug output trace mechanism and has a much larger code and data size. Note 4695that these values will vary depending on the efficiency of the compiler and 4696the compiler options used during generation. 4697 4698 Previous Release: 4699 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 4700 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 4701 Current Release: 4702 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 4703 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 4704 4705 47062) iASL Compiler/Disassembler: 4707 4708Fixed a missing semicolon in the aslcompiler.y file. 4709 4710---------------------------------------- 471105 November 2004. Summary of changes for version 20041105: 4712 47131) ACPI CA Core Subsystem: 4714 4715Implemented support for FADT revision 2. This was an interim table (between 4716ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register. 4717 4718Implemented optional support to allow uninitialized LocalX and ArgX 4719variables in a control method. The variables are initialized to an Integer 4720object with a value of zero. This support is enabled by setting the 4721AcpiGbl_EnableInterpreterSlack flag to TRUE. 4722 4723Implemented support for Integer objects for the SizeOf operator. Either 4 4724or 8 is returned, depending on the current integer size (32-bit or 64-bit, 4725depending on the parent table revision). 4726 4727Fixed a problem in the implementation of the SizeOf and ObjectType operators 4728where the operand was resolved to a value too early, causing incorrect 4729return values for some objects. 4730 4731Fixed some possible memory leaks during exceptional conditions. 4732 4733Code and Data Size: Current and previous core subsystem library sizes are 4734shown below. These are the code and data sizes for the acpica.lib produced 4735by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4736any ACPI driver or OSPM code. The debug version of the code includes the 4737debug output trace mechanism and has a much larger code and data size. Note 4738that these values will vary depending on the efficiency of the compiler and 4739the compiler options used during generation. 4740 4741 Previous Release: 4742 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 4743 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 4744 Current Release: 4745 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 4746 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 4747 4748 47492) iASL Compiler/Disassembler: 4750 4751Implemented support for all ACPI 3.0 reserved names and methods. 4752 4753Implemented all ACPI 3.0 grammar elements in the front-end, including 4754support for semicolons. 4755 4756Implemented the ACPI 3.0 Function() and ToUUID() macros 4757 4758Fixed a problem in the disassembler where a Scope() operator would not be 4759emitted properly if the target of the scope was in another table. 4760 4761---------------------------------------- 476215 October 2004. Summary of changes for version 20041015: 4763 4764Note: ACPI CA is currently undergoing an in-depth and complete formal 4765evaluation to test/verify the following areas. Other suggestions are 4766welcome. This will result in an increase in the frequency of releases and 4767the number of bug fixes in the next few months. 4768 - Functional tests for all ASL/AML operators 4769 - All implicit/explicit type conversions 4770 - Bit fields and operation regions 4771 - 64-bit math support and 32-bit-only "truncated" math support 4772 - Exceptional conditions, both compiler and interpreter 4773 - Dynamic object deletion and memory leaks 4774 - ACPI 3.0 support when implemented 4775 - External interfaces to the ACPI subsystem 4776 4777 47781) ACPI CA Core Subsystem: 4779 4780Fixed two alignment issues on 64-bit platforms - within debug statements in 4781AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the Address 4782field within the non-aligned ACPI generic address structure. 4783 4784Fixed a problem in the Increment and Decrement operators where incorrect 4785operand resolution could result in the inadvertent modification of the 4786original integer when the integer is passed into another method as an 4787argument and the arg is then incremented/decremented. 4788 4789Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-bit 4790BCD number were truncated during conversion. 4791 4792Fixed a problem in the ToDecimal operator where the length of the resulting 4793string could be set incorrectly too long if the input operand was a Buffer 4794object. 4795 4796Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte (0) 4797within a buffer would prematurely terminate a compare between buffer 4798objects. 4799 4800Added a check for string overflow (>200 characters as per the ACPI 4801specification) during the Concatenate operator with two string operands. 4802 4803Code and Data Size: Current and previous core subsystem library sizes are 4804shown below. These are the code and data sizes for the acpica.lib produced 4805by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4806any ACPI driver or OSPM code. The debug version of the code includes the 4807debug output trace mechanism and has a much larger code and data size. Note 4808that these values will vary depending on the efficiency of the compiler and 4809the compiler options used during generation. 4810 4811 Previous Release: 4812 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 4813 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 4814 Current Release: 4815 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 4816 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 4817 4818 4819 48202) iASL Compiler/Disassembler: 4821 4822Allow the use of the ObjectType operator on uninitialized Locals and Args 4823(returns 0 as per the ACPI specification). 4824 4825Fixed a problem where the compiler would fault if there was a syntax error 4826in the FieldName of all of the various CreateXXXField operators. 4827 4828Disallow the use of lower case letters within the EISAID macro, as per the 4829ACPI specification. All EISAID strings must be of the form "UUUNNNN" Where 4830U is an uppercase letter and N is a hex digit. 4831 4832 4833---------------------------------------- 483406 October 2004. Summary of changes for version 20041006: 4835 48361) ACPI CA Core Subsystem: 4837 4838Implemented support for the ACPI 3.0 Timer operator. This ASL function 4839implements a 64-bit timer with 100 nanosecond granularity. 4840 4841Defined a new OSL interface, AcpiOsGetTimer. This interface is used to 4842implement the ACPI 3.0 Timer operator. This allows the host OS to implement 4843the timer with the best clock available. Also, it keeps the core subsystem 4844out of the clock handling business, since the host OS (usually) performs 4845this function. 4846 4847Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write) 4848functions use a 64-bit address which is part of the packed ACPI Generic 4849Address Structure. Since the structure is non-aligned, the alignment macros 4850are now used to extract the address to a local variable before use. 4851 4852Fixed a problem where the ToInteger operator assumed all input strings were 4853hexadecimal. The operator now handles both decimal strings and hex strings 4854(prefixed with "0x"). 4855 4856Fixed a problem where the string length in the string object created as a 4857result of the internal ConvertToString procedure could be incorrect. This 4858potentially affected all implicit conversions and also the ToDecimalString 4859and ToHexString operators. 4860 4861Fixed two problems in the ToString operator. If the length parameter was 4862zero, an incorrect string object was created and the value of the input 4863length parameter was inadvertently changed from zero to Ones. 4864 4865Fixed a problem where the optional ResourceSource string in the ExtendedIRQ 4866resource macro was ignored. 4867 4868Simplified the interfaces to the internal division functions, reducing code 4869size and complexity. 4870 4871Code and Data Size: Current and previous core subsystem library sizes are 4872shown below. These are the code and data sizes for the acpica.lib produced 4873by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4874any ACPI driver or OSPM code. The debug version of the code includes the 4875debug output trace mechanism and has a much larger code and data size. Note 4876that these values will vary depending on the efficiency of the compiler and 4877the compiler options used during generation. 4878 4879 Previous Release: 4880 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 4881 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 4882 Current Release: 4883 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 4884 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 4885 4886 48872) iASL Compiler/Disassembler: 4888 4889Implemented support for the ACPI 3.0 Timer operator. 4890 4891Fixed a problem where the Default() operator was inadvertently ignored in a 4892Switch/Case block. This was a problem in the translation of the Switch 4893statement to If...Else pairs. 4894 4895Added support to allow a standalone Return operator, with no parentheses (or 4896operands). 4897 4898Fixed a problem with code generation for the ElseIf operator where the 4899translated Else...If parse tree was improperly constructed leading to the 4900loss of some code. 4901 4902---------------------------------------- 490322 September 2004. Summary of changes for version 20040922: 4904 49051) ACPI CA Core Subsystem: 4906 4907Fixed a problem with the implementation of the LNot() operator where "Ones" 4908was not returned for the TRUE case. Changed the code to return Ones instead 4909of (!Arg) which was usually 1. This change affects iASL constant folding for 4910this operator also. 4911 4912Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was not 4913initialized properly -- Now zero the entire buffer in this case where the 4914buffer already exists. 4915 4916Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32 4917Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all 4918related code considerably. This will require changes/updates to all OS 4919interface layers (OSLs.) 4920 4921Implemented a new external interface, AcpiInstallExceptionHandler, to allow 4922a system exception handler to be installed. This handler is invoked upon any 4923run-time exception that occurs during control method execution. 4924 4925Added support for the DSDT in AcpiTbFindTable. This allows the 4926DataTableRegion() operator to access the local copy of the DSDT. 4927 4928Code and Data Size: Current and previous core subsystem library sizes are 4929shown below. These are the code and data sizes for the acpica.lib produced 4930by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4931any ACPI driver or OSPM code. The debug version of the code includes the 4932debug output trace mechanism and has a much larger code and data size. Note 4933that these values will vary depending on the efficiency of the compiler and 4934the compiler options used during generation. 4935 4936 Previous Release: 4937 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 4938 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 4939 Current Release: 4940 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 4941 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 4942 4943 49442) iASL Compiler/Disassembler: 4945 4946Fixed a problem with constant folding and the LNot operator. LNot was 4947returning 1 in the TRUE case, not Ones as per the ACPI specification. This 4948could result in the generation of an incorrect folded/reduced constant. 4949 4950End-Of-File is now allowed within a "//"-style comment. A parse error no 4951longer occurs if such a comment is at the very end of the input ASL source 4952file. 4953 4954Implemented the "-r" option to override the Revision in the table header. 4955The initial use of this option will be to simplify the evaluation of the AML 4956interpreter by allowing a single ASL source module to be compiled for either 495732-bit or 64-bit integers. 4958 4959 4960---------------------------------------- 496127 August 2004. Summary of changes for version 20040827: 4962 49631) ACPI CA Core Subsystem: 4964 4965- Implemented support for implicit object conversion in the non-numeric 4966logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, and 4967LNotEqual.) Any combination of Integers/Strings/Buffers may now be used; 4968the second operand is implicitly converted on the fly to match the type of 4969the first operand. For example: 4970 4971 LEqual (Source1, Source2) 4972 4973Source1 and Source2 must each evaluate to an integer, a string, or a buffer. 4974The data type of Source1 dictates the required type of Source2. Source2 is 4975implicitly converted if necessary to match the type of Source1. 4976 4977- Updated and corrected the behavior of the string conversion support. The 4978rules concerning conversion of buffers to strings (according to the ACPI 4979specification) are as follows: 4980 4981ToDecimalString - explicit byte-wise conversion of buffer to string of 4982decimal values (0-255) separated by commas. ToHexString - explicit byte-wise 4983conversion of buffer to string of hex values (0-FF) separated by commas. 4984ToString - explicit byte-wise conversion of buffer to string. Byte-by-byte 4985copy with no transform except NULL terminated. Any other implicit buffer-to- 4986string conversion - byte-wise conversion of buffer to string of hex values 4987(0-FF) separated by spaces. 4988 4989- Fixed typo in definition of AcpiGbl_EnableInterpreterSlack. 4990 4991- Fixed a problem in AcpiNsGetPathnameLength where the returned length was 4992one byte too short in the case of a node in the root scope. This could 4993cause a fault during debug output. 4994 4995- Code and Data Size: Current and previous core subsystem library sizes are 4996shown below. These are the code and data sizes for the acpica.lib produced 4997by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4998any ACPI driver or OSPM code. The debug version of the code includes the 4999debug output trace mechanism and has a much larger code and data size. Note 5000that these values will vary depending on the efficiency of the compiler and 5001the compiler options used during generation. 5002 5003 Previous Release: 5004 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 5005 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 5006 Current Release: 5007 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 5008 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 5009 5010 50112) iASL Compiler/Disassembler: 5012 5013- Fixed a Linux generation error. 5014 5015 5016---------------------------------------- 501716 August 2004. Summary of changes for version 20040816: 5018 50191) ACPI CA Core Subsystem: 5020 5021Designed and implemented support within the AML interpreter for the so- 5022called "implicit return". This support returns the result of the last ASL 5023operation within a control method, in the absence of an explicit Return() 5024operator. A few machines depend on this behavior, even though it is not 5025explicitly supported by the ASL language. It is optional support that can 5026be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag. 5027 5028Removed support for the PCI_Config address space from the internal low level 5029hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This 5030support was not used internally, and would not work correctly anyway because 5031the PCI bus number and segment number were not supported. There are 5032separate interfaces for PCI configuration space access because of the unique 5033interface. 5034 5035Code and Data Size: Current and previous core subsystem library sizes are 5036shown below. These are the code and data sizes for the acpica.lib produced 5037by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5038any ACPI driver or OSPM code. The debug version of the code includes the 5039debug output trace mechanism and has a much larger code and data size. Note 5040that these values will vary depending on the efficiency of the compiler and 5041the compiler options used during generation. 5042 5043 Previous Release: 5044 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 5045 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 5046 Current Release: 5047 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 5048 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 5049 5050 50512) iASL Compiler/Disassembler: 5052 5053Fixed a problem where constants in ASL expressions at the root level (not 5054within a control method) could be inadvertently truncated during code 5055generation. This problem was introduced in the 20040715 release. 5056 5057 5058---------------------------------------- 505915 July 2004. Summary of changes for version 20040715: 5060 50611) ACPI CA Core Subsystem: 5062 5063Restructured the internal HW GPE interfaces to pass/track the current state 5064of interrupts (enabled/disabled) in order to avoid possible deadlock and 5065increase flexibility of the interfaces. 5066 5067Implemented a "lexicographical compare" for String and Buffer objects within 5068the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -- 5069as per further clarification to the ACPI specification. Behavior is similar 5070to C library "strcmp". 5071 5072Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable 5073external function. In the 32-bit non-debug case, the stack use has been 5074reduced from 168 bytes to 32 bytes. 5075 5076Deployed a new run-time configuration flag, AcpiGbl_EnableInterpreterSlack, 5077whose purpose is to allow the AML interpreter to forgive certain bad AML 5078constructs. Default setting is FALSE. 5079 5080Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field IO 5081support code. If enabled, it allows field access to go beyond the end of a 5082region definition if the field is within the region length rounded up to the 5083next access width boundary (a common coding error.) 5084 5085Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to 5086ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also, these 5087symbols are lowercased by the latest version of the AcpiSrc tool. 5088 5089The prototypes for the PCI interfaces in acpiosxf.h have been updated to 5090rename "Register" to simply "Reg" to prevent certain compilers from 5091complaining. 5092 5093Code and Data Size: Current and previous core subsystem library sizes are 5094shown below. These are the code and data sizes for the acpica.lib produced 5095by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5096any ACPI driver or OSPM code. The debug version of the code includes the 5097debug output trace mechanism and has a much larger code and data size. Note 5098that these values will vary depending on the efficiency of the compiler and 5099the compiler options used during generation. 5100 5101 Previous Release: 5102 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 5103 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 5104 Current Release: 5105 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 5106 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 5107 5108 51092) iASL Compiler/Disassembler: 5110 5111Implemented full support for Package objects within the Case() operator. 5112Note: The Break() operator is currently not supported within Case blocks 5113(TermLists) as there is some question about backward compatibility with ACPI 51141.0 interpreters. 5115 5116 5117Fixed a problem where complex terms were not supported properly within the 5118Switch() operator. 5119 5120Eliminated extraneous warning for compiler-emitted reserved names of the 5121form "_T_x". (Used in Switch/Case operators.) 5122 5123Eliminated optimization messages for "_T_x" objects and small constants 5124within the DefinitionBlock operator. 5125 5126 5127---------------------------------------- 512815 June 2004. Summary of changes for version 20040615: 5129 51301) ACPI CA Core Subsystem: 5131 5132Implemented support for Buffer and String objects (as per ACPI 2.0) for the 5133following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 5134LLessEqual. 5135 5136All directory names in the entire source package are lower case, as they 5137were in earlier releases. 5138 5139Implemented "Disassemble" command in the AML debugger that will disassemble 5140a single control method. 5141 5142Code and Data Size: Current and previous core subsystem library sizes are 5143shown below. These are the code and data sizes for the acpica.lib produced 5144by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5145any ACPI driver or OSPM code. The debug version of the code includes the 5146debug output trace mechanism and has a much larger code and data size. Note 5147that these values will vary depending on the efficiency of the compiler and 5148the compiler options used during generation. 5149 5150 Previous Release: 5151 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 5152 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 5153 5154 Current 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 5158 51592) iASL Compiler/Disassembler: 5160 5161Implemented support for Buffer and String objects (as per ACPI 2.0) for the 5162following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 5163LLessEqual. 5164 5165All directory names in the entire source package are lower case, as they 5166were in earlier releases. 5167 5168Fixed a fault when using the -g or -d<nofilename> options if the FADT was 5169not found. 5170 5171Fixed an issue with the Windows version of the compiler where later versions 5172of Windows place the FADT in the registry under the name "FADT" and not 5173"FACP" as earlier versions did. This applies when using the -g or - 5174d<nofilename> options. The compiler now looks for both strings as 5175necessary. 5176 5177Fixed a problem with compiler namepath optimization where a namepath within 5178the Scope() operator could not be optimized if the namepath was a subpath of 5179the current scope path. 5180 5181---------------------------------------- 518227 May 2004. Summary of changes for version 20040527: 5183 51841) ACPI CA Core Subsystem: 5185 5186Completed a new design and implementation for EBDA (Extended BIOS Data Area) 5187support in the RSDP scan code. The original code improperly scanned for the 5188EBDA by simply scanning from memory location 0 to 0x400. The correct method 5189is to first obtain the EBDA pointer from within the BIOS data area, then 5190scan 1K of memory starting at the EBDA pointer. There appear to be few if 5191any machines that place the RSDP in the EBDA, however. 5192 5193Integrated a fix for a possible fault during evaluation of BufferField 5194arguments. Obsolete code that was causing the problem was removed. 5195 5196Found and fixed a problem in the Field Support Code where data could be 5197corrupted on a bit field read that starts on an aligned boundary but does 5198not end on an aligned boundary. Merged the read/write "datum length" 5199calculation code into a common procedure. 5200 5201Rolled in a couple of changes to the FreeBSD-specific header. 5202 5203 5204Code and Data Size: Current and previous core subsystem library sizes are 5205shown below. These are the code and data sizes for the acpica.lib produced 5206by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5207any ACPI driver or OSPM code. The debug version of the code includes the 5208debug output trace mechanism and has a much larger code and data size. Note 5209that these values will vary depending on the efficiency of the compiler and 5210the compiler options used during generation. 5211 5212 Previous Release: 5213 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 5214 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 5215 Current Release: 5216 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 5217 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 5218 5219 52202) iASL Compiler/Disassembler: 5221 5222Fixed a generation warning produced by some overly-verbose compilers for a 522364-bit constant. 5224 5225---------------------------------------- 522614 May 2004. Summary of changes for version 20040514: 5227 52281) ACPI CA Core Subsystem: 5229 5230Fixed a problem where hardware GPE enable bits sometimes not set properly 5231during and after GPE method execution. Result of 04/27 changes. 5232 5233Removed extra "clear all GPEs" when sleeping/waking. 5234 5235Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single 5236AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above to 5237the new AcpiEv* calls as appropriate. 5238 5239ACPI_OS_NAME was removed from the OS-specific headers. The default name is 5240now "Microsoft Windows NT" for maximum compatibility. However this can be 5241changed by modifying the acconfig.h file. 5242 5243Allow a single invocation of AcpiInstallNotifyHandler for a handler that 5244traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag. 5245 5246Run _INI methods on ThermalZone objects. This is against the ACPI 5247specification, but there is apparently ASL code in the field that has these 5248_INI methods, and apparently "other" AML interpreters execute them. 5249 5250Performed a full 16/32/64 bit lint that resulted in some small changes. 5251 5252Added a sleep simulation command to the AML debugger to test sleep code. 5253 5254Code and Data Size: Current and previous core subsystem library sizes are 5255shown below. These are the code and data sizes for the acpica.lib produced 5256by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5257any ACPI driver or OSPM code. The debug version of the code includes the 5258debug output trace mechanism and has a much larger code and data size. Note 5259that these values will vary depending on the efficiency of the compiler and 5260the compiler options used during generation. 5261 5262 Previous Release: 5263 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 5264 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 5265 Current 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 5269---------------------------------------- 527027 April 2004. Summary of changes for version 20040427: 5271 52721) ACPI CA Core Subsystem: 5273 5274Completed a major overhaul of the GPE handling within ACPI CA. There are 5275now three types of GPEs: wake-only, runtime-only, and combination wake/run. 5276The only GPEs allowed to be combination wake/run are for button-style 5277devices such as a control-method power button, control-method sleep button, 5278or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are not 5279referenced by any _PRW methods are marked for "runtime" and hardware 5280enabled. Any GPE that is referenced by a _PRW method is marked for "wake" 5281(and disabled at runtime). However, at sleep time, only those GPEs that 5282have been specifically enabled for wake via the AcpiEnableGpe interface will 5283actually be hardware enabled. 5284 5285A new external interface has been added, AcpiSetGpeType(), that is meant to 5286be used by device drivers to force a GPE to a particular type. It will be 5287especially useful for the drivers for the button devices mentioned above. 5288 5289Completed restructuring of the ACPI CA initialization sequence so that 5290default operation region handlers are installed before GPEs are initialized 5291and the _PRW methods are executed. This will prevent errors when the _PRW 5292methods attempt to access system memory or I/O space. 5293 5294GPE enable/disable no longer reads the GPE enable register. We now keep the 5295enable info for runtime and wake separate and in the GPE_EVENT_INFO. We 5296thus no longer depend on the hardware to maintain these bits. 5297 5298Always clear the wake status and fixed/GPE status bits before sleep, even 5299for state S5. 5300 5301Improved the AML debugger output for displaying the GPE blocks and their 5302current status. 5303 5304Added new strings for the _OSI method, of the form "Windows 2001 SPx" where 5305x = 0,1,2,3,4. 5306 5307Fixed a problem where the physical address was incorrectly calculated when 5308the Load() operator was used to directly load from an Operation Region (vs. 5309loading from a Field object.) Also added check for minimum table length for 5310this case. 5311 5312Fix for multiple mutex acquisition. Restore original thread SyncLevel on 5313mutex release. 5314 5315Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for 5316consistency with the other fields returned. 5317 5318Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such 5319structure for each GPE in the system, so the size of this structure is 5320important. 5321 5322CPU stack requirement reduction: Cleaned up the method execution and object 5323evaluation paths so that now a parameter structure is passed, instead of 5324copying the various method parameters over and over again. 5325 5326In evregion.c: Correctly exit and reenter the interpreter region if and 5327only if dispatching an operation region request to a user-installed handler. 5328Do not exit/reenter when dispatching to a default handler (e.g., default 5329system memory or I/O handlers) 5330 5331 5332Notes for updating drivers for the new GPE support. The following changes 5333must be made to ACPI-related device drivers that are attached to one or more 5334GPEs: (This information will be added to the ACPI CA Programmer Reference.) 5335 53361) AcpiInstallGpeHandler no longer automatically enables the GPE, you must 5337explicitly call AcpiEnableGpe. 53382) There is a new interface called AcpiSetGpeType. This should be called 5339before enabling the GPE. Also, this interface will automatically disable 5340the GPE if it is currently enabled. 53413) AcpiEnableGpe no longer supports a GPE type flag. 5342 5343Specific drivers that must be changed: 53441) EC driver: 5345 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED, 5346AeGpeHandler, NULL); 5347 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME); 5348 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR); 5349 53502) Button Drivers (Power, Lid, Sleep): 5351Run _PRW method under parent device 5352If _PRW exists: /* This is a control-method button */ 5353 Extract GPE number and possibly GpeDevice 5354 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN); 5355 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR); 5356 5357For all other devices that have _PRWs, we automatically set the GPE type to 5358ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. This 5359must be done on a selective basis, usually requiring some kind of user app 5360to allow the user to pick the wake devices. 5361 5362 5363Code and Data Size: Current and previous core subsystem library sizes are 5364shown below. These are the code and data sizes for the acpica.lib produced 5365by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5366any ACPI driver or OSPM code. The debug version of the code includes the 5367debug output trace mechanism and has a much larger code and data size. Note 5368that these values will vary depending on the efficiency of the compiler and 5369the compiler options used during generation. 5370 5371 Previous Release: 5372 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 5373 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 5374 Current Release: 5375 5376 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 5377 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 5378 5379 5380 5381---------------------------------------- 538202 April 2004. Summary of changes for version 20040402: 5383 53841) ACPI CA Core Subsystem: 5385 5386Fixed an interpreter problem where an indirect store through an ArgX 5387parameter was incorrectly applying the "implicit conversion rules" during 5388the store. From the ACPI specification: "If the target is a method local or 5389argument (LocalX or ArgX), no conversion is performed and the result is 5390stored directly to the target". The new behavior is to disable implicit 5391conversion during ALL stores to an ArgX. 5392 5393Changed the behavior of the _PRW method scan to ignore any and all errors 5394returned by a given _PRW. This prevents the scan from aborting from the 5395failure of any single _PRW. 5396 5397Moved the runtime configuration parameters from the global init procedure to 5398static variables in acglobal.h. This will allow the host to override the 5399default values easily. 5400 5401Code and Data Size: Current and previous core subsystem library sizes are 5402shown below. These are the code and data sizes for the acpica.lib produced 5403by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5404any ACPI driver or OSPM code. The debug version of the code includes the 5405debug output trace mechanism and has a much larger code and data size. Note 5406that these values will vary depending on the efficiency of the compiler and 5407the compiler options used during generation. 5408 5409 Previous Release: 5410 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 5411 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 5412 Current Release: 5413 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 5414 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 5415 5416 54172) iASL Compiler/Disassembler: 5418 5419iASL now fully disassembles SSDTs. However, External() statements are not 5420generated automatically for unresolved symbols at this time. This is a 5421planned feature for future implementation. 5422 5423Fixed a scoping problem in the disassembler that occurs when the type of the 5424target of a Scope() operator is overridden. This problem caused an 5425incorrectly nested internal namespace to be constructed. 5426 5427Any warnings or errors that are emitted during disassembly are now commented 5428out automatically so that the resulting file can be recompiled without any 5429hand editing. 5430 5431---------------------------------------- 543226 March 2004. Summary of changes for version 20040326: 5433 54341) ACPI CA Core Subsystem: 5435 5436Implemented support for "wake" GPEs via interaction between GPEs and the 5437_PRW methods. Every GPE that is pointed to by one or more _PRWs is 5438identified as a WAKE GPE and by default will no longer be enabled at 5439runtime. Previously, we were blindly enabling all GPEs with a corresponding 5440_Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway. We 5441believe this has been the cause of thousands of "spurious" GPEs on some 5442systems. 5443 5444This new GPE behavior is can be reverted to the original behavior (enable 5445ALL GPEs at runtime) via a runtime flag. 5446 5447Fixed a problem where aliased control methods could not access objects 5448properly. The proper scope within the namespace was not initialized 5449(transferred to the target of the aliased method) before executing the 5450target method. 5451 5452Fixed a potential race condition on internal object deletion on the return 5453object in AcpiEvaluateObject. 5454 5455Integrated a fix for resource descriptors where both _MEM and _MTP were 5456being extracted instead of just _MEM. (i.e. bitmask was incorrectly too 5457wide, 0x0F instead of 0x03.) 5458 5459Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, preventing a 5460fault in some cases. 5461 5462Updated Notify() values for debug statements in evmisc.c 5463 5464Return proper status from AcpiUtMutexInitialize, not just simply AE_OK. 5465 5466Code and Data Size: Current and previous core subsystem library sizes are 5467shown below. These are the code and data sizes for the acpica.lib produced 5468by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5469any ACPI driver or OSPM code. The debug version of the code includes the 5470debug output trace mechanism and has a much larger code and data size. Note 5471that these values will vary depending on the efficiency of the compiler and 5472the compiler options used during generation. 5473 5474 Previous Release: 5475 5476 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 5477 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 5478 Current Release: 5479 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 5480 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 5481 5482---------------------------------------- 548311 March 2004. Summary of changes for version 20040311: 5484 54851) ACPI CA Core Subsystem: 5486 5487Fixed a problem where errors occurring during the parse phase of control 5488method execution did not abort cleanly. For example, objects created and 5489installed in the namespace were not deleted. This caused all subsequent 5490invocations of the method to return the AE_ALREADY_EXISTS exception. 5491 5492Implemented a mechanism to force a control method to "Serialized" execution 5493if the method attempts to create namespace objects. (The root of the 5494AE_ALREADY_EXISTS problem.) 5495 5496Implemented support for the predefined _OSI "internal" control method. 5497Initial supported strings are "Linux", "Windows 2000", "Windows 2001", and 5498"Windows 2001.1", and can be easily upgraded for new strings as necessary. 5499This feature will allow "other" operating systems to execute the fully 5500tested, "Windows" code path through the ASL code 5501 5502Global Lock Support: Now allows multiple acquires and releases with any 5503internal thread. Removed concept of "owning thread" for this special mutex. 5504 5505Fixed two functions that were inappropriately declaring large objects on the 5506CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage during 5507method execution considerably. 5508 5509Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the 5510S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT. 5511 5512Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs 5513defined on the machine. 5514 5515Implemented two runtime options: One to force all control method execution 5516to "Serialized" to mimic Windows behavior, another to disable _OSI support 5517if it causes problems on a given machine. 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 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 5529 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 5530 Current Release: 5531 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 5532 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 5533 55342) iASL Compiler/Disassembler: 5535 5536Fixed an array size problem for FreeBSD that would cause the compiler to 5537fault. 5538 5539---------------------------------------- 554020 February 2004. Summary of changes for version 20040220: 5541 5542 55431) ACPI CA Core Subsystem: 5544 5545Implemented execution of _SxD methods for Device objects in the 5546GetObjectInfo interface. 5547 5548Fixed calls to _SST method to pass the correct arguments. 5549 5550Added a call to _SST on wake to restore to "working" state. 5551 5552Check for End-Of-Buffer failure case in the WalkResources interface. 5553 5554Integrated fix for 64-bit alignment issue in acglobal.h by moving two 5555structures to the beginning of the file. 5556 5557After wake, clear GPE status register(s) before enabling GPEs. 5558 5559After wake, clear/enable power button. (Perhaps we should clear/enable all 5560fixed events upon wake.) 5561 5562Fixed a couple of possible memory leaks in the Namespace manager. 5563 5564Integrated latest acnetbsd.h file. 5565 5566---------------------------------------- 556711 February 2004. Summary of changes for version 20040211: 5568 5569 55701) ACPI CA Core Subsystem: 5571 5572Completed investigation and implementation of the call-by-reference 5573mechanism for control method arguments. 5574 5575Fixed a problem where a store of an object into an indexed package could 5576fail if the store occurs within a different method than the method that 5577created the package. 5578 5579Fixed a problem where the ToDecimal operator could return incorrect results. 5580 5581Fixed a problem where the CopyObject operator could fail on some of the more 5582obscure objects (e.g., Reference objects.) 5583 5584Improved the output of the Debug object to display buffer, package, and 5585index objects. 5586 5587Fixed a problem where constructs of the form "RefOf (ArgX)" did not return 5588the expected result. 5589 5590Added permanent ACPI_REPORT_ERROR macros for all instances of the 5591ACPI_AML_INTERNAL exception. 5592 5593Integrated latest version of acfreebsd.h 5594 5595---------------------------------------- 559616 January 2004. Summary of changes for version 20040116: 5597 5598The purpose of this release is primarily to update the copyright years in 5599each module, thus causing a huge number of diffs. There are a few small 5600functional changes, however. 5601 56021) ACPI CA Core Subsystem: 5603 5604Improved error messages when there is a problem finding one or more of the 5605required base ACPI tables 5606 5607Reintroduced the definition of APIC_HEADER in actbl.h 5608 5609Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h) 5610 5611Removed extraneous reference to NewObj in dsmthdat.c 5612 56132) iASL compiler 5614 5615Fixed a problem introduced in December that disabled the correct disassembly 5616of Resource Templates 5617 5618 5619---------------------------------------- 562003 December 2003. Summary of changes for version 20031203: 5621 56221) ACPI CA Core Subsystem: 5623 5624Changed the initialization of Operation Regions during subsystem 5625init to perform two entire walks of the ACPI namespace; The first 5626to initialize the regions themselves, the second to execute the 5627_REG methods. This fixed some interdependencies across _REG 5628methods found on some machines. 5629 5630Fixed a problem where a Store(Local0, Local1) could simply update 5631the object reference count, and not create a new copy of the 5632object if the Local1 is uninitialized. 5633 5634Implemented support for the _SST reserved method during sleep 5635transitions. 5636 5637Implemented support to clear the SLP_TYP and SLP_EN bits when 5638waking up, this is apparently required by some machines. 5639 5640When sleeping, clear the wake status only if SleepState is not S5. 5641 5642Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect 5643pointer arithmetic advanced a string pointer too far. 5644 5645Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer 5646could be returned if the requested table has not been loaded. 5647 5648Within the support for IRQ resources, restructured the handling of 5649the active and edge/level bits. 5650 5651Fixed a few problems in AcpiPsxExecute() where memory could be 5652leaked under certain error conditions. 5653 5654Improved error messages for the cases where the ACPI mode could 5655not be entered. 5656 5657Code and Data Size: Current and previous core subsystem library 5658sizes are shown below. These are the code and data sizes for the 5659acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 5660these values do not include any ACPI driver or OSPM code. The 5661debug version of the code includes the debug output trace 5662mechanism and has a much larger code and data size. Note that 5663these values will vary depending on the efficiency of the compiler 5664and the compiler options used during generation. 5665 5666 Previous Release (20031029): 5667 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 5668 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 5669 Current Release: 5670 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 5671 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 5672 56732) iASL Compiler/Disassembler: 5674 5675Implemented a fix for the iASL disassembler where a bad index was 5676generated. This was most noticeable on 64-bit platforms 5677 5678 5679---------------------------------------- 568029 October 2003. Summary of changes for version 20031029: 5681 56821) ACPI CA Core Subsystem: 5683 5684 5685Fixed a problem where a level-triggered GPE with an associated 5686_Lxx control method was incorrectly cleared twice. 5687 5688Fixed a problem with the Field support code where an access can 5689occur beyond the end-of-region if the field is non-aligned but 5690extends to the very end of the parent region (resulted in an 5691AE_AML_REGION_LIMIT exception.) 5692 5693Fixed a problem with ACPI Fixed Events where an RT Clock handler 5694would not get invoked on an RTC event. The RTC event bitmasks for 5695the PM1 registers were not being initialized properly. 5696 5697Implemented support for executing _STA and _INI methods for 5698Processor objects. Although this is currently not part of the 5699ACPI specification, there is existing ASL code that depends on the 5700init-time execution of these methods. 5701 5702Implemented and deployed a GetDescriptorName function to decode 5703the various types of internal descriptors. Guards against null 5704descriptors during debug output also. 5705 5706Implemented and deployed a GetNodeName function to extract the 4- 5707character namespace node name. This function simplifies the debug 5708and error output, as well as guarding against null pointers during 5709output. 5710 5711Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to 5712simplify the debug and error output of 64-bit integers. This 5713macro replaces the HIDWORD and LODWORD macros for dumping these 5714integers. 5715 5716Updated the implementation of the Stall() operator to only call 5717AcpiOsStall(), and also return an error if the operand is larger 5718than 255. This preserves the required behavior of not 5719relinquishing the processor, as would happen if AcpiOsSleep() was 5720called for "long stalls". 5721 5722Constructs of the form "Store(LocalX,LocalX)" where LocalX is not 5723initialized are now treated as NOOPs. 5724 5725Cleaned up a handful of warnings during 64-bit generation. 5726 5727Fixed a reported error where and incorrect GPE number was passed 5728to the GPE dispatch handler. This value is only used for error 5729output, however. Used this opportunity to clean up and streamline 5730the GPE dispatch code. 5731 5732Code and Data Size: Current and previous core subsystem library 5733sizes are shown below. These are the code and data sizes for the 5734acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 5735these values do not include any ACPI driver or OSPM code. The 5736 5737debug version of the code includes the debug output trace 5738mechanism and has a much larger code and data size. Note that 5739these values will vary depending on the efficiency of the compiler 5740and the compiler options used during generation. 5741 5742 Previous Release (20031002): 5743 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 5744 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 5745 Current Release: 5746 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 5747 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 5748 5749 57502) iASL Compiler/Disassembler: 5751 5752Updated the iASL compiler to return an error if the operand to the 5753Stall() operator is larger than 255. 5754 5755 5756---------------------------------------- 575702 October 2003. Summary of changes for version 20031002: 5758 5759 57601) ACPI CA Core Subsystem: 5761 5762Fixed a problem with Index Fields where the index was not 5763incremented for fields that require multiple writes to the 5764index/data registers (Fields that are wider than the data 5765register.) 5766 5767Fixed a problem with all Field objects where a write could go 5768beyond the end-of-field if the field was larger than the access 5769granularity and therefore required multiple writes to complete the 5770request. An extra write beyond the end of the field could happen 5771inadvertently. 5772 5773Fixed a problem with Index Fields where a BUFFER_OVERFLOW error 5774would incorrectly be returned if the width of the Data Register 5775was larger than the specified field access width. 5776 5777Completed fixes for LoadTable() and Unload() and verified their 5778operation. Implemented full support for the "DdbHandle" object 5779throughout the ACPI CA subsystem. 5780 5781Implemented full support for the MADT and ECDT tables in the ACPI 5782CA header files. Even though these tables are not directly 5783consumed by ACPI CA, the header definitions are useful for ACPI 5784device drivers. 5785 5786Integrated resource descriptor fixes posted to the Linux ACPI 5787list. This included checks for minimum descriptor length, and 5788support for trailing NULL strings within descriptors that have 5789optional string elements. 5790 5791Code and Data Size: Current and previous core subsystem library 5792sizes are shown below. These are the code and data sizes for the 5793acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 5794these values do not include any ACPI driver or OSPM code. The 5795debug version of the code includes the debug output trace 5796mechanism and has a much larger code and data size. Note that 5797these values will vary depending on the efficiency of the compiler 5798and the compiler options used during generation. 5799 5800 Previous Release (20030918): 5801 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 5802 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 5803 Current Release: 5804 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 5805 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 5806 5807 58082) iASL Compiler: 5809 5810Implemented detection of non-ASCII characters within the input 5811source ASL file. This catches attempts to compile binary (AML) 5812files early in the compile, with an informative error message. 5813 5814Fixed a problem where the disassembler would fault if the output 5815filename could not be generated or if the output file could not be 5816opened. 5817 5818---------------------------------------- 581918 September 2003. Summary of changes for version 20030918: 5820 5821 58221) ACPI CA Core Subsystem: 5823 5824Found and fixed a longstanding problem with the late execution of 5825the various deferred AML opcodes (such as Operation Regions, 5826Buffer Fields, Buffers, and Packages). If the name string 5827specified for the name of the new object placed the object in a 5828scope other than the current scope, the initialization/execution 5829of the opcode failed. The solution to this problem was to 5830implement a mechanism where the late execution of such opcodes 5831does not attempt to lookup/create the name a second time in an 5832incorrect scope. This fixes the "region size computed 5833incorrectly" problem. 5834 5835Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a 5836Global Lock AE_BAD_PARAMETER error. 5837 5838Fixed several 64-bit issues with prototypes, casting and data 5839types. 5840 5841Removed duplicate prototype from acdisasm.h 5842 5843Fixed an issue involving EC Operation Region Detach (Shaohua Li) 5844 5845Code and Data Size: Current and previous core subsystem library 5846sizes are shown below. These are the code and data sizes for the 5847acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 5848these values do not include any ACPI driver or OSPM code. The 5849debug version of the code includes the debug output trace 5850mechanism and has a much larger code and data size. Note that 5851these values will vary depending on the efficiency of the compiler 5852and the compiler options used during generation. 5853 5854 Previous Release: 5855 5856 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 5857 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 5858 Current Release: 5859 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 5860 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 5861 5862 58632) Linux: 5864 5865Fixed the AcpiOsSleep implementation in osunixxf.c to pass the 5866correct sleep time in seconds. 5867 5868---------------------------------------- 586914 July 2003. Summary of changes for version 20030619: 5870 58711) ACPI CA Core Subsystem: 5872 5873Parse SSDTs in order discovered, as opposed to reverse order 5874(Hrvoje Habjanic) 5875 5876Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas 5877Klausner, 5878 Nate Lawson) 5879 5880 58812) Linux: 5882 5883Dynamically allocate SDT list (suggested by Andi Kleen) 5884 5885proc function return value cleanups (Andi Kleen) 5886 5887Correctly handle NMI watchdog during long stalls (Andrew Morton) 5888 5889Make it so acpismp=force works (reported by Andrew Morton) 5890 5891 5892---------------------------------------- 589319 June 2003. Summary of changes for version 20030619: 5894 58951) ACPI CA Core Subsystem: 5896 5897Fix To/FromBCD, eliminating the need for an arch-specific #define. 5898 5899Do not acquire a semaphore in the S5 shutdown path. 5900 5901Fix ex_digits_needed for 0. (Takayoshi Kochi) 5902 5903Fix sleep/stall code reversal. (Andi Kleen) 5904 5905Revert a change having to do with control method calling 5906semantics. 5907 59082) Linux: 5909 5910acpiphp update (Takayoshi Kochi) 5911 5912Export acpi_disabled for sonypi (Stelian Pop) 5913 5914Mention acpismp=force in config help 5915 5916Re-add acpitable.c and acpismp=force. This improves backwards 5917 5918compatibility and also cleans up the code to a significant degree. 5919 5920Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge) 5921 5922---------------------------------------- 592322 May 2003. Summary of changes for version 20030522: 5924 59251) ACPI CA Core Subsystem: 5926 5927Found and fixed a reported problem where an AE_NOT_FOUND error 5928occurred occasionally during _BST evaluation. This turned out to 5929be an Owner ID allocation issue where a called method did not get 5930a new ID assigned to it. Eventually, (after 64k calls), the Owner 5931ID UINT16 would wraparound so that the ID would be the same as the 5932caller's and the called method would delete the caller's 5933namespace. 5934 5935Implemented extended error reporting for control methods that are 5936aborted due to a run-time exception. Output includes the exact 5937AML instruction that caused the method abort, a dump of the method 5938locals and arguments at the time of the abort, and a trace of all 5939nested control method calls. 5940 5941Modified the interpreter to allow the creation of buffers of zero 5942length from the AML code. Implemented new code to ensure that no 5943attempt is made to actually allocate a memory buffer (of length 5944zero) - instead, a simple buffer object with a NULL buffer pointer 5945and length zero is created. A warning is no longer issued when 5946the AML attempts to create a zero-length buffer. 5947 5948Implemented a workaround for the "leading asterisk issue" in 5949_HIDs, _UIDs, and _CIDs in the AML interpreter. One leading 5950asterisk is automatically removed if present in any HID, UID, or 5951CID strings. The iASL compiler will still flag this asterisk as 5952an error, however. 5953 5954Implemented full support for _CID methods that return a package of 5955multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface 5956now additionally returns a device _CID list if present. This 5957required a change to the external interface in order to pass an 5958ACPI_BUFFER object as a parameter since the _CID list is of 5959variable length. 5960 5961Fixed a problem with the new AE_SAME_HANDLER exception where 5962handler initialization code did not know about this exception. 5963 5964Code and Data Size: Current and previous core subsystem library 5965sizes are shown below. These are the code and data sizes for the 5966acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 5967these values do not include any ACPI driver or OSPM code. The 5968debug version of the code includes the debug output trace 5969mechanism and has a much larger code and data size. Note that 5970these values will vary depending on the efficiency of the compiler 5971and the compiler options used during generation. 5972 5973 Previous Release (20030509): 5974 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 5975 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 5976 Current Release: 5977 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 5978 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 5979 5980 59812) Linux: 5982 5983Fixed a bug in which we would reinitialize the ACPI interrupt 5984after it was already working, thus disabling all ACPI and the IRQs 5985for any other device sharing the interrupt. (Thanks to Stian 5986Jordet) 5987 5988Toshiba driver update (John Belmonte) 5989 5990Return only 0 or 1 for our interrupt handler status (Andrew 5991Morton) 5992 5993 59943) iASL Compiler: 5995 5996Fixed a reported problem where multiple (nested) ElseIf() 5997statements were not handled correctly by the compiler, resulting 5998in incorrect warnings and incorrect AML code. This was a problem 5999in both the ASL parser and the code generator. 6000 6001 60024) Documentation: 6003 6004Added changes to existing interfaces, new exception codes, and new 6005text concerning reference count object management versus garbage 6006collection. 6007 6008---------------------------------------- 600909 May 2003. Summary of changes for version 20030509. 6010 6011 60121) ACPI CA Core Subsystem: 6013 6014Changed the subsystem initialization sequence to hold off 6015installation of address space handlers until the hardware has been 6016initialized and the system has entered ACPI mode. This is because 6017the installation of space handlers can cause _REG methods to be 6018run. Previously, the _REG methods could potentially be run before 6019ACPI mode was enabled. 6020 6021Fixed some memory leak issues related to address space handler and 6022notify handler installation. There were some problems with the 6023reference count mechanism caused by the fact that the handler 6024objects are shared across several namespace objects. 6025 6026Fixed a reported problem where reference counts within the 6027namespace were not properly updated when named objects created by 6028method execution were deleted. 6029 6030Fixed a reported problem where multiple SSDTs caused a deletion 6031issue during subsystem termination. Restructured the table data 6032structures to simplify the linked lists and the related code. 6033 6034Fixed a problem where the table ID associated with secondary 6035tables (SSDTs) was not being propagated into the namespace objects 6036created by those tables. This would only present a problem for 6037tables that are unloaded at run-time, however. 6038 6039Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE 6040type as the length parameter (instead of UINT32). 6041 6042Solved a long-standing problem where an ALREADY_EXISTS error 6043appears on various systems. This problem could happen when there 6044are multiple PCI_Config operation regions under a single PCI root 6045bus. This doesn't happen very frequently, but there are some 6046systems that do this in the ASL. 6047 6048Fixed a reported problem where the internal DeleteNode function 6049was incorrectly handling the case where a namespace node was the 6050first in the parent's child list, and had additional peers (not 6051the only child, but first in the list of children.) 6052 6053Code and Data Size: Current core subsystem library sizes are shown 6054below. These are the code and data sizes for the acpica.lib 6055produced by the Microsoft Visual C++ 6.0 compiler, and these 6056values do not include any ACPI driver or OSPM code. The debug 6057version of the code includes the debug output trace mechanism and 6058has a much larger code and data size. Note that these values will 6059vary depending on the efficiency of the compiler and the compiler 6060options used during generation. 6061 6062 Previous Release 6063 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 6064 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 6065 Current Release: 6066 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 6067 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 6068 6069 60702) Linux: 6071 6072Allow ":" in OS override string (Ducrot Bruno) 6073 6074Kobject fix (Greg KH) 6075 6076 60773 iASL Compiler/Disassembler: 6078 6079Fixed a problem in the generation of the C source code files (AML 6080is emitted in C source statements for BIOS inclusion) where the 6081Ascii dump that appears within a C comment at the end of each line 6082could cause a compile time error if the AML sequence happens to 6083have an open comment or close comment sequence embedded. 6084 6085 6086---------------------------------------- 608724 April 2003. Summary of changes for version 20030424. 6088 6089 60901) ACPI CA Core Subsystem: 6091 6092Support for big-endian systems has been implemented. Most of the 6093support has been invisibly added behind big-endian versions of the 6094ACPI_MOVE_* macros. 6095 6096Fixed a problem in AcpiHwDisableGpeBlock() and 6097AcpiHwClearGpeBlock() where an incorrect offset was passed to the 6098low level hardware write routine. The offset parameter was 6099actually eliminated from the low level read/write routines because 6100they had become obsolete. 6101 6102Fixed a problem where a handler object was deleted twice during 6103the removal of a fixed event handler. 6104 6105 61062) Linux: 6107 6108A fix for SMP systems with link devices was contributed by 6109 6110Compaq's Dan Zink. 6111 6112(2.5) Return whether we handled the interrupt in our IRQ handler. 6113(Linux ISRs no longer return void, so we can propagate the handler 6114return value from the ACPI CA core back to the OS.) 6115 6116 6117 61183) Documentation: 6119 6120The ACPI CA Programmer Reference has been updated to reflect new 6121interfaces and changes to existing interfaces. 6122 6123---------------------------------------- 612428 March 2003. Summary of changes for version 20030328. 6125 61261) ACPI CA Core Subsystem: 6127 6128The GPE Block Device support has been completed. New interfaces 6129are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event 6130interfaces (enable, disable, clear, getstatus) have been split 6131into separate interfaces for Fixed Events and General Purpose 6132Events (GPEs) in order to support GPE Block Devices properly. 6133 6134Fixed a problem where the error message "Failed to acquire 6135semaphore" would appear during operations on the embedded 6136controller (EC). 6137 6138Code and Data Size: Current core subsystem library sizes are shown 6139below. These are the code and data sizes for the acpica.lib 6140produced by the Microsoft Visual C++ 6.0 compiler, and these 6141values do not include any ACPI driver or OSPM code. The debug 6142version of the code includes the debug output trace mechanism and 6143has a much larger code and data size. Note that these values will 6144vary depending on the efficiency of the compiler and the compiler 6145options used during generation. 6146 6147 Previous Release 6148 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 6149 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 6150 Current Release: 6151 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 6152 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 6153 6154 6155---------------------------------------- 615628 February 2003. Summary of changes for version 20030228. 6157 6158 61591) ACPI CA Core Subsystem: 6160 6161The GPE handling and dispatch code has been completely overhauled 6162in preparation for support of GPE Block Devices (ID ACPI0006). 6163This affects internal data structures and code only; there should 6164be no differences visible externally. One new file has been 6165added, evgpeblk.c 6166 6167The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only 6168fields that are used to determine the GPE block lengths. The 6169REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address 6170structures are ignored. This is per the ACPI specification but it 6171isn't very clear. The full 256 Block 0/1 GPEs are now supported 6172(the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128). 6173 6174In the SCI interrupt handler, removed the read of the PM1_CONTROL 6175register to look at the SCI_EN bit. On some machines, this read 6176causes an SMI event and greatly slows down SCI events. (This may 6177in fact be the cause of slow battery status response on some 6178systems.) 6179 6180Fixed a problem where a store of a NULL string to a package object 6181could cause the premature deletion of the object. This was seen 6182during execution of the battery _BIF method on some systems, 6183resulting in no battery data being returned. 6184 6185Added AcpiWalkResources interface to simplify parsing of resource 6186lists. 6187 6188Code and Data Size: Current core subsystem library sizes are shown 6189below. These are the code and data sizes for the acpica.lib 6190produced by the Microsoft Visual C++ 6.0 compiler, and these 6191values do not include any ACPI driver or OSPM code. The debug 6192version of the code includes the debug output trace mechanism and 6193has a much larger code and data size. Note that these values will 6194vary depending on the efficiency of the compiler and the compiler 6195options used during generation. 6196 6197 Previous Release 6198 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 6199 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 6200 Current 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 6204 62052) Linux 6206 6207S3 fixes (Ole Rohne) 6208 6209Update ACPI PHP driver with to use new acpi_walk_resource API 6210(Bjorn Helgaas) 6211 6212Add S4BIOS support (Pavel Machek) 6213 6214Map in entire table before performing checksum (John Stultz) 6215 6216Expand the mem= cmdline to allow the specification of reserved and 6217ACPI DATA blocks (Pavel Machek) 6218 6219Never use ACPI on VISWS 6220 6221Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez) 6222 6223Revert a change that allowed P_BLK lengths to be 4 or 5. This is 6224causing us to think that some systems support C2 when they really 6225don't. 6226 6227Do not count processor objects for non-present CPUs (Thanks to 6228Dominik Brodowski) 6229 6230 62313) iASL Compiler: 6232 6233Fixed a problem where ASL include files could not be found and 6234opened. 6235 6236Added support for the _PDC reserved name. 6237 6238 6239---------------------------------------- 624022 January 2003. Summary of changes for version 20030122. 6241 6242 62431) ACPI CA Core Subsystem: 6244 6245Added a check for constructs of the form: Store (Local0, Local0) 6246where Local0 is not initialized. Apparently, some BIOS 6247programmers believe that this is a NOOP. Since this store doesn't 6248do anything anyway, the new prototype behavior will ignore this 6249error. This is a case where we can relax the strict checking in 6250the interpreter in the name of compatibility. 6251 6252 62532) Linux 6254 6255The AcpiSrc Source Conversion Utility has been released with the 6256Linux package for the first time. This is the utility that is 6257used to convert the ACPI CA base source code to the Linux version. 6258 6259(Both) Handle P_BLK lengths shorter than 6 more gracefully 6260 6261(Both) Move more headers to include/acpi, and delete an unused 6262header. 6263 6264(Both) Move drivers/acpi/include directory to include/acpi 6265 6266(Both) Boot functions don't use cmdline, so don't pass it around 6267 6268(Both) Remove include of unused header (Adrian Bunk) 6269 6270(Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since 6271the 6272former now also includes the latter, acpiphp.h only needs the one, 6273now. 6274 6275(2.5) Make it possible to select method of bios restoring after S3 6276resume. [=> no more ugly ifdefs] (Pavel Machek) 6277 6278(2.5) Make proc write interfaces work (Pavel Machek) 6279 6280(2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski) 6281 6282(2.5) Break out ACPI Perf code into its own module, under cpufreq 6283(Dominik Brodowski) 6284 6285(2.4) S4BIOS support (Ducrot Bruno) 6286 6287(2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio 6288Visinoni) 6289 6290 62913) iASL Compiler: 6292 6293Added support to disassemble SSDT and PSDTs. 6294 6295Implemented support to obtain SSDTs from the Windows registry if 6296available. 6297 6298 6299---------------------------------------- 630009 January 2003. Summary of changes for version 20030109. 6301 63021) ACPI CA Core Subsystem: 6303 6304Changed the behavior of the internal Buffer-to-String conversion 6305function. The current ACPI specification states that the contents 6306of the buffer are "converted to a string of two-character 6307hexadecimal numbers, each separated by a space". Unfortunately, 6308this definition is not backwards compatible with existing ACPI 1.0 6309implementations (although the behavior was not defined in the ACPI 63101.0 specification). The new behavior simply copies data from the 6311buffer to the string until a null character is found or the end of 6312the buffer is reached. The new String object is always null 6313terminated. This problem was seen during the generation of _BIF 6314battery data where incorrect strings were returned for battery 6315type, etc. This will also require an errata to the ACPI 6316specification. 6317 6318Renamed all instances of NATIVE_UINT and NATIVE_INT to 6319ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively. 6320 6321Copyright in all module headers (both Linux and non-Linux) has be 6322updated to 2003. 6323 6324Code and Data Size: Current core subsystem library sizes are shown 6325below. These are the code and data sizes for the acpica.lib 6326produced by the Microsoft Visual C++ 6.0 compiler, and these 6327values do not include any ACPI driver or OSPM code. The debug 6328version of the code includes the debug output trace mechanism and 6329has a much larger code and data size. Note that these values will 6330vary depending on the efficiency of the compiler and the compiler 6331options used during generation. 6332 6333 Previous Release 6334 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 6335 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 6336 Current Release: 6337 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 6338 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 6339 6340 63412) Linux 6342 6343Fixed an oops on module insertion/removal (Matthew Tippett) 6344 6345(2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante) 6346 6347(2.5) Replace pr_debug (Randy Dunlap) 6348 6349(2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski) 6350 6351(Both) Eliminate spawning of thread from timer callback, in favor 6352of schedule_work() 6353 6354(Both) Show Lid status in /proc (Zdenek OGAR Skalak) 6355 6356(Both) Added define for Fixed Function HW region (Matthew Wilcox) 6357 6358(Both) Add missing statics to button.c (Pavel Machek) 6359 6360Several changes have been made to the source code translation 6361utility that generates the Linux Code in order to make the code 6362more "Linux-like": 6363 6364All typedefs on structs and unions have been removed in keeping 6365with the Linux coding style. 6366 6367Removed the non-Linux SourceSafe module revision number from each 6368module header. 6369 6370Completed major overhaul of symbols to be lowercased for linux. 6371Doubled the number of symbols that are lowercased. 6372 6373Fixed a problem where identifiers within procedure headers and 6374within quotes were not fully lower cased (they were left with a 6375starting capital.) 6376 6377Some C macros whose only purpose is to allow the generation of 16- 6378bit code are now completely removed in the Linux code, increasing 6379readability and maintainability. 6380 6381---------------------------------------- 6382 638312 December 2002. Summary of changes for version 20021212. 6384 6385 63861) ACPI CA Core Subsystem: 6387 6388Fixed a problem where the creation of a zero-length AML Buffer 6389would cause a fault. 6390 6391Fixed a problem where a Buffer object that pointed to a static AML 6392buffer (in an ACPI table) could inadvertently be deleted, causing 6393memory corruption. 6394 6395Fixed a problem where a user buffer (passed in to the external 6396ACPI CA interfaces) could be overwritten if the buffer was too 6397small to complete the operation, causing memory corruption. 6398 6399Fixed a problem in the Buffer-to-String conversion code where a 6400string of length one was always returned, regardless of the size 6401of the input Buffer object. 6402 6403Removed the NATIVE_CHAR data type across the entire source due to 6404lack of need and lack of consistent use. 6405 6406Code and Data Size: Current core subsystem library sizes are shown 6407below. These are the code and data sizes for the acpica.lib 6408produced by the Microsoft Visual C++ 6.0 compiler, and these 6409values do not include any ACPI driver or OSPM code. The debug 6410version of the code includes the debug output trace mechanism and 6411has a much larger code and data size. Note that these values will 6412vary depending on the efficiency of the compiler and the compiler 6413options used during generation. 6414 6415 Previous Release 6416 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 6417 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 6418 Current Release: 6419 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 6420 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 6421 6422 6423---------------------------------------- 642405 December 2002. Summary of changes for version 20021205. 6425 64261) ACPI CA Core Subsystem: 6427 6428Fixed a problem where a store to a String or Buffer object could 6429cause corruption of the DSDT if the object type being stored was 6430the same as the target object type and the length of the object 6431being stored was equal to or smaller than the original (existing) 6432target object. This was seen to cause corruption of battery _BIF 6433buffers if the _BIF method modified the buffer on the fly. 6434 6435Fixed a problem where an internal error was generated if a control 6436method invocation was used in an OperationRegion, Buffer, or 6437Package declaration. This was caused by the deferred parsing of 6438the control method and thus the deferred creation of the internal 6439method object. The solution to this problem was to create the 6440internal method object at the moment the method is encountered in 6441the first pass - so that subsequent references to the method will 6442able to obtain the required parameter count and thus properly 6443parse the method invocation. This problem presented itself as an 6444AE_AML_INTERNAL during the pass 1 parse phase during table load. 6445 6446Fixed a problem where the internal String object copy routine did 6447not always allocate sufficient memory for the target String object 6448and caused memory corruption. This problem was seen to cause 6449"Allocation already present in list!" errors as memory allocation 6450became corrupted. 6451 6452Implemented a new function for the evaluation of namespace objects 6453that allows the specification of the allowable return object 6454types. This simplifies a lot of code that checks for a return 6455object of one or more specific objects returned from the 6456evaluation (such as _STA, etc.) This may become and external 6457function if it would be useful to ACPI-related drivers. 6458 6459Completed another round of prefixing #defines with "ACPI_" for 6460clarity. 6461 6462Completed additional code restructuring to allow more modular 6463linking for iASL compiler and AcpiExec. Several files were split 6464creating new files. New files: nsparse.c dsinit.c evgpe.c 6465 6466Implemented an abort mechanism to terminate an executing control 6467method via the AML debugger. This feature is useful for debugging 6468control methods that depend (wait) for specific hardware 6469responses. 6470 6471Code and Data Size: Current core subsystem library sizes are shown 6472below. These are the code and data sizes for the acpica.lib 6473produced by the Microsoft Visual C++ 6.0 compiler, and these 6474values do not include any ACPI driver or OSPM code. The debug 6475version of the code includes the debug output trace mechanism and 6476has a much larger code and data size. Note that these values will 6477vary depending on the efficiency of the compiler and the compiler 6478options used during generation. 6479 6480 Previous Release 6481 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 6482 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 6483 Current Release: 6484 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 6485 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 6486 6487 64882) iASL Compiler/Disassembler 6489 6490Fixed a compiler code generation problem for "Interrupt" Resource 6491Descriptors. If specified in the ASL, the optional "Resource 6492Source Index" and "Resource Source" fields were not inserted into 6493the correct location within the AML resource descriptor, creating 6494an invalid descriptor. 6495 6496Fixed a disassembler problem for "Interrupt" resource descriptors. 6497The optional "Resource Source Index" and "Resource Source" fields 6498were ignored. 6499 6500 6501---------------------------------------- 650222 November 2002. Summary of changes for version 20021122. 6503 6504 65051) ACPI CA Core Subsystem: 6506 6507Fixed a reported problem where an object stored to a Method Local 6508or Arg was not copied to a new object during the store - the 6509object pointer was simply copied to the Local/Arg. This caused 6510all subsequent operations on the Local/Arg to also affect the 6511original source of the store operation. 6512 6513Fixed a problem where a store operation to a Method Local or Arg 6514was not completed properly if the Local/Arg contained a reference 6515(from RefOf) to a named field. The general-purpose store-to- 6516namespace-node code is now used so that this case is handled 6517automatically. 6518 6519Fixed a problem where the internal object copy routine would cause 6520a protection fault if the object being copied was a Package and 6521contained either 1) a NULL package element or 2) a nested sub- 6522package. 6523 6524Fixed a problem with the GPE initialization that resulted from an 6525ambiguity in the ACPI specification. One section of the 6526specification states that both the address and length of the GPE 6527block must be zero if the block is not supported. Another section 6528implies that only the address need be zero if the block is not 6529supported. The code has been changed so that both the address and 6530the length must be non-zero to indicate a valid GPE block (i.e., 6531if either the address or the length is zero, the GPE block is 6532invalid.) 6533 6534Code and Data Size: Current core subsystem library sizes are shown 6535below. These are the code and data sizes for the acpica.lib 6536produced by the Microsoft Visual C++ 6.0 compiler, and these 6537values do not include any ACPI driver or OSPM code. The debug 6538version of the code includes the debug output trace mechanism and 6539has a much larger code and data size. Note that these values will 6540vary depending on the efficiency of the compiler and the compiler 6541options used during generation. 6542 6543 Previous Release 6544 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 6545 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 6546 Current Release: 6547 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 6548 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 6549 6550 65512) Linux 6552 6553Cleaned up EC driver. Exported an external EC read/write 6554interface. By going through this, other drivers (most notably 6555sonypi) will be able to serialize access to the EC. 6556 6557 65583) iASL Compiler/Disassembler 6559 6560Implemented support to optionally generate include files for both 6561ASM and C (the -i switch). This simplifies BIOS development by 6562automatically creating include files that contain external 6563declarations for the symbols that are created within the 6564 6565(optionally generated) ASM and C AML source files. 6566 6567 6568---------------------------------------- 656915 November 2002. Summary of changes for version 20021115. 6570 65711) ACPI CA Core Subsystem: 6572 6573Fixed a memory leak problem where an error during resolution of 6574 6575method arguments during a method invocation from another method 6576failed to cleanup properly by deleting all successfully resolved 6577argument objects. 6578 6579Fixed a problem where the target of the Index() operator was not 6580correctly constructed if the source object was a package. This 6581problem has not been detected because the use of a target operand 6582with Index() is very rare. 6583 6584Fixed a problem with the Index() operator where an attempt was 6585made to delete the operand objects twice. 6586 6587Fixed a problem where an attempt was made to delete an operand 6588twice during execution of the CondRefOf() operator if the target 6589did not exist. 6590 6591Implemented the first of perhaps several internal create object 6592functions that create and initialize a specific object type. This 6593consolidates duplicated code wherever the object is created, thus 6594shrinking the size of the subsystem. 6595 6596Implemented improved debug/error messages for errors that occur 6597during nested method invocations. All executing method pathnames 6598are displayed (with the error) as the call stack is unwound - thus 6599simplifying debug. 6600 6601Fixed a problem introduced in the 10/02 release that caused 6602premature deletion of a buffer object if a buffer was used as an 6603ASL operand where an integer operand is required (Thus causing an 6604implicit object conversion from Buffer to Integer.) The change in 6605the 10/02 release was attempting to fix a memory leak (albeit 6606incorrectly.) 6607 6608Code and Data Size: Current core subsystem library sizes are shown 6609below. These are the code and data sizes for the acpica.lib 6610produced by the Microsoft Visual C++ 6.0 compiler, and these 6611values do not include any ACPI driver or OSPM code. The debug 6612version of the code includes the debug output trace mechanism and 6613has a much larger code and data size. Note that these values will 6614vary depending on the efficiency of the compiler and the compiler 6615options used during generation. 6616 6617 Previous Release 6618 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 6619 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 6620 Current Release: 6621 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 6622 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 6623 6624 66252) Linux 6626 6627Changed the implementation of the ACPI semaphores to use down() 6628instead of down_interruptable(). It is important that the 6629execution of ACPI control methods not be interrupted by signals. 6630Methods must run to completion, or the system may be left in an 6631unknown/unstable state. 6632 6633Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set. 6634(Shawn Starr) 6635 6636 66373) iASL Compiler/Disassembler 6638 6639 6640Changed the default location of output files. All output files 6641are now placed in the current directory by default instead of in 6642the directory of the source file. This change may affect some 6643existing makefiles, but it brings the behavior of the compiler in 6644line with other similar tools. The location of the output files 6645can be overridden with the -p command line switch. 6646 6647 6648---------------------------------------- 664911 November 2002. Summary of changes for version 20021111. 6650 6651 66520) ACPI Specification 2.0B is released and is now available at: 6653http://www.acpi.info/index.html 6654 6655 66561) ACPI CA Core Subsystem: 6657 6658Implemented support for the ACPI 2.0 SMBus Operation Regions. 6659This includes the early detection and handoff of the request to 6660the SMBus region handler (avoiding all of the complex field 6661support code), and support for the bidirectional return packet 6662from an SMBus write operation. This paves the way for the 6663development of SMBus drivers in each host operating system. 6664 6665Fixed a problem where the semaphore WAIT_FOREVER constant was 6666defined as 32 bits, but must be 16 bits according to the ACPI 6667specification. This had the side effect of causing ASL 6668Mutex/Event timeouts even though the ASL code requested a wait 6669forever. Changed all internal references to the ACPI timeout 6670parameter to 16 bits to prevent future problems. Changed the name 6671of WAIT_FOREVER to ACPI_WAIT_FOREVER. 6672 6673Code and Data Size: Current core subsystem library sizes are shown 6674below. These are the code and data sizes for the acpica.lib 6675produced by the Microsoft Visual C++ 6.0 compiler, and these 6676values do not include any ACPI driver or OSPM code. The debug 6677version of the code includes the debug output trace mechanism and 6678has a much larger code and data size. Note that these values will 6679vary depending on the efficiency of the compiler and the compiler 6680options used during generation. 6681 6682 Previous Release 6683 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 6684 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 6685 Current Release: 6686 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 6687 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 6688 6689 66902) Linux 6691 6692Module loading/unloading fixes (John Cagle) 6693 6694 66953) iASL Compiler/Disassembler 6696 6697Added support for the SMBBlockProcessCall keyword (ACPI 2.0) 6698 6699Implemented support for the disassembly of all SMBus protocol 6700keywords (SMBQuick, SMBWord, etc.) 6701 6702---------------------------------------- 670301 November 2002. Summary of changes for version 20021101. 6704 6705 67061) ACPI CA Core Subsystem: 6707 6708Fixed a problem where platforms that have a GPE1 block but no GPE0 6709block were not handled correctly. This resulted in a "GPE 6710overlap" error message. GPE0 is no longer required. 6711 6712Removed code added in the previous release that inserted nodes 6713into the namespace in alphabetical order. This caused some side- 6714effects on various machines. The root cause of the problem is 6715still under investigation since in theory, the internal ordering 6716of the namespace nodes should not matter. 6717 6718 6719Enhanced error reporting for the case where a named object is not 6720found during control method execution. The full ACPI namepath 6721(name reference) of the object that was not found is displayed in 6722this case. 6723 6724Note: as a result of the overhaul of the namespace object types in 6725the previous release, the namespace nodes for the predefined 6726scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE 6727instead of ACPI_TYPE_ANY. This simplifies the namespace 6728management code but may affect code that walks the namespace tree 6729looking for specific object types. 6730 6731Code and Data Size: Current core subsystem library sizes are shown 6732below. These are the code and data sizes for the acpica.lib 6733produced by the Microsoft Visual C++ 6.0 compiler, and these 6734values do not include any ACPI driver or OSPM code. The debug 6735version of the code includes the debug output trace mechanism and 6736has a much larger code and data size. Note that these values will 6737vary depending on the efficiency of the compiler and the compiler 6738options used during generation. 6739 6740 Previous Release 6741 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 6742 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 6743 Current Release: 6744 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 6745 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 6746 6747 67482) Linux 6749 6750Fixed a problem introduced in the previous release where the 6751Processor and Thermal objects were not recognized and installed in 6752/proc. This was related to the scope type change described above. 6753 6754 67553) iASL Compiler/Disassembler 6756 6757Implemented the -g option to get all of the required ACPI tables 6758from the registry and save them to files (Windows version of the 6759compiler only.) The required tables are the FADT, FACS, and DSDT. 6760 6761Added ACPI table checksum validation during table disassembly in 6762order to catch corrupted tables. 6763 6764 6765---------------------------------------- 676622 October 2002. Summary of changes for version 20021022. 6767 67681) ACPI CA Core Subsystem: 6769 6770Implemented a restriction on the Scope operator that the target 6771must already exist in the namespace at the time the operator is 6772encountered (during table load or method execution). In other 6773words, forward references are not allowed and Scope() cannot 6774create a new object. This changes the previous behavior where the 6775interpreter would create the name if not found. This new behavior 6776correctly enables the search-to-root algorithm during namespace 6777lookup of the target name. Because of this upsearch, this fixes 6778the known Compaq _SB_.OKEC problem and makes both the AML 6779interpreter and iASL compiler compatible with other ACPI 6780implementations. 6781 6782Completed a major overhaul of the internal ACPI object types for 6783the ACPI Namespace and the associated operand objects. Many of 6784these types had become obsolete with the introduction of the two- 6785pass namespace load. This cleanup simplifies the code and makes 6786the entire namespace load mechanism much clearer and easier to 6787understand. 6788 6789Improved debug output for tracking scope opening/closing to help 6790diagnose scoping issues. The old scope name as well as the new 6791scope name are displayed. Also improved error messages for 6792problems with ASL Mutex objects and error messages for GPE 6793problems. 6794 6795Cleaned up the namespace dump code, removed obsolete code. 6796 6797All string output (for all namespace/object dumps) now uses the 6798common ACPI string output procedure which handles escapes properly 6799and does not emit non-printable characters. 6800 6801Fixed some issues with constants in the 64-bit version of the 6802local C library (utclib.c) 6803 6804 68052) Linux 6806 6807EC Driver: No longer attempts to acquire the Global Lock at 6808interrupt level. 6809 6810 68113) iASL Compiler/Disassembler 6812 6813Implemented ACPI 2.0B grammar change that disallows all Type 1 and 68142 opcodes outside of a control method. This means that the 6815"executable" operators (versus the "namespace" operators) cannot 6816be used at the table level; they can only be used within a control 6817method. 6818 6819Implemented the restriction on the Scope() operator where the 6820target must already exist in the namespace at the time the 6821operator is encountered (during ASL compilation). In other words, 6822forward references are not allowed and Scope() cannot create a new 6823object. This makes the iASL compiler compatible with other ACPI 6824implementations and makes the Scope() implementation adhere to the 6825ACPI specification. 6826 6827Fixed a problem where namepath optimization for the Alias operator 6828was optimizing the wrong path (of the two namepaths.) This caused 6829a "Missing alias link" error message. 6830 6831Fixed a problem where an "unknown reserved name" warning could be 6832incorrectly generated for names like "_SB" when the trailing 6833underscore is not used in the original ASL. 6834 6835Fixed a problem where the reserved name check did not handle 6836NamePaths with multiple NameSegs correctly. The first nameseg of 6837the NamePath was examined instead of the last NameSeg. 6838 6839 6840---------------------------------------- 6841 684202 October 2002. Summary of changes for this release. 6843 6844 68451) ACPI CA Core Subsystem version 20021002: 6846 6847Fixed a problem where a store/copy of a string to an existing 6848string did not always set the string length properly in the String 6849object. 6850 6851Fixed a reported problem with the ToString operator where the 6852behavior was identical to the ToHexString operator instead of just 6853simply converting a raw buffer to a string data type. 6854 6855Fixed a problem where CopyObject and the other "explicit" 6856conversion operators were not updating the internal namespace node 6857type as part of the store operation. 6858 6859Fixed a memory leak during implicit source operand conversion 6860where the original object was not deleted if it was converted to a 6861new object of a different type. 6862 6863Enhanced error messages for all problems associated with namespace 6864lookups. Common procedure generates and prints the lookup name as 6865well as the formatted status. 6866 6867Completed implementation of a new design for the Alias support 6868within the namespace. The existing design did not handle the case 6869where a new object was assigned to one of the two names due to the 6870use of an explicit conversion operator, resulting in the two names 6871pointing to two different objects. The new design simply points 6872the Alias name to the original name node - not to the object. 6873This results in a level of indirection that must be handled in the 6874name resolution mechanism. 6875 6876Code and Data Size: Current core subsystem library sizes are shown 6877below. These are the code and data sizes for the acpica.lib 6878produced by the Microsoft Visual C++ 6.0 compiler, and these 6879values do not include any ACPI driver or OSPM code. The debug 6880version of the code includes the debug output trace mechanism and 6881has a larger code and data size. Note that these values will vary 6882depending on the efficiency of the compiler and the compiler 6883options used during generation. 6884 6885 Previous Release 6886 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 6887 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 6888 Current Release: 6889 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 6890 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 6891 6892 68932) Linux 6894 6895Initialize thermal driver's timer before it is used. (Knut 6896Neumann) 6897 6898Allow handling negative celsius values. (Kochi Takayoshi) 6899 6900Fix thermal management and make trip points. R/W (Pavel Machek) 6901 6902Fix /proc/acpi/sleep. (P. Christeas) 6903 6904IA64 fixes. (David Mosberger) 6905 6906Fix reversed logic in blacklist code. (Sergio Monteiro Basto) 6907 6908Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik 6909Brodowski) 6910 6911 69123) iASL Compiler/Disassembler 6913 6914Clarified some warning/error messages. 6915 6916 6917---------------------------------------- 691818 September 2002. Summary of changes for this release. 6919 6920 69211) ACPI CA Core Subsystem version 20020918: 6922 6923Fixed a reported problem with reference chaining (via the Index() 6924and RefOf() operators) in the ObjectType() and SizeOf() operators. 6925The definition of these operators includes the dereferencing of 6926all chained references to return information on the base object. 6927 6928Fixed a problem with stores to indexed package elements - the 6929existing code would not complete the store if an "implicit 6930conversion" was not performed. In other words, if the existing 6931object (package element) was to be replaced completely, the code 6932didn't handle this case. 6933 6934Relaxed typechecking on the ASL "Scope" operator to allow the 6935target name to refer to an object of type Integer, String, or 6936Buffer, in addition to the scoping object types (Device, 6937predefined Scopes, Processor, PowerResource, and ThermalZone.) 6938This allows existing AML code that has workarounds for a bug in 6939Windows to function properly. A warning is issued, however. This 6940affects both the AML interpreter and the iASL compiler. Below is 6941an example of this type of ASL code: 6942 6943 Name(DEB,0x00) 6944 Scope(DEB) 6945 { 6946 6947Fixed some reported problems with 64-bit integer support in the 6948local implementation of C library functions (clib.c) 6949 6950 69512) Linux 6952 6953Use ACPI fix map region instead of IOAPIC region, since it is 6954undefined in non-SMP. 6955 6956Ensure that the SCI has the proper polarity and trigger, even on 6957systems that do not have an interrupt override entry in the MADT. 6958 69592.5 big driver reorganization (Pat Mochel) 6960 6961Use early table mapping code from acpitable.c (Andi Kleen) 6962 6963New blacklist entries (Andi Kleen) 6964 6965Blacklist improvements. Split blacklist code out into a separate 6966file. Move checking the blacklist to very early. Previously, we 6967would use ACPI tables, and then halfway through init, check the 6968blacklist -- too late. Now, it's early enough to completely fall- 6969back to non-ACPI. 6970 6971 69723) iASL Compiler/Disassembler version 20020918: 6973 6974Fixed a problem where the typechecking code didn't know that an 6975alias could point to a method. In other words, aliases were not 6976being dereferenced during typechecking. 6977 6978 6979---------------------------------------- 698029 August 2002. Summary of changes for this release. 6981 69821) ACPI CA Core Subsystem Version 20020829: 6983 6984If the target of a Scope() operator already exists, it must be an 6985object type that actually opens a scope -- such as a Device, 6986Method, Scope, etc. This is a fatal runtime error. Similar error 6987check has been added to the iASL compiler also. 6988 6989Tightened up the namespace load to disallow multiple names in the 6990same scope. This previously was allowed if both objects were of 6991the same type. (i.e., a lookup was the same as entering a new 6992name). 6993 6994 69952) Linux 6996 6997Ensure that the ACPI interrupt has the proper trigger and 6998polarity. 6999 7000local_irq_disable is extraneous. (Matthew Wilcox) 7001 7002Make "acpi=off" actually do what it says, and not use the ACPI 7003interpreter *or* the tables. 7004 7005Added arch-neutral support for parsing SLIT and SRAT tables (Kochi 7006Takayoshi) 7007 7008 70093) iASL Compiler/Disassembler Version 20020829: 7010 7011Implemented namepath optimization for name declarations. For 7012example, a declaration like "Method (\_SB_.ABCD)" would get 7013optimized to "Method (ABCD)" if the declaration is within the 7014\_SB_ scope. This optimization is in addition to the named 7015reference path optimization first released in the previous 7016version. This would seem to complete all possible optimizations 7017for namepaths within the ASL/AML. 7018 7019If the target of a Scope() operator already exists, it must be an 7020object type that actually opens a scope -- such as a Device, 7021Method, Scope, etc. 7022 7023Implemented a check and warning for unreachable code in the same 7024block below a Return() statement. 7025 7026Fixed a problem where the listing file was not generated if the 7027compiler aborted if the maximum error count was exceeded (200). 7028 7029Fixed a problem where the typechecking of method return values was 7030broken. This includes the check for a return value when the 7031method is invoked as a TermArg (a return value is expected.) 7032 7033Fixed a reported problem where EOF conditions during a quoted 7034string or comment caused a fault. 7035 7036 7037---------------------------------------- 703815 August 2002. Summary of changes for this release. 7039 70401) ACPI CA Core Subsystem Version 20020815: 7041 7042Fixed a reported problem where a Store to a method argument that 7043contains a reference did not perform the indirect store correctly. 7044This problem was created during the conversion to the new 7045reference object model - the indirect store to a method argument 7046code was not updated to reflect the new model. 7047 7048Reworked the ACPI mode change code to better conform to ACPI 2.0, 7049handle corner cases, and improve code legibility (Kochi Takayoshi) 7050 7051Fixed a problem with the pathname parsing for the carat (^) 7052prefix. The heavy use of the carat operator by the new namepath 7053optimization in the iASL compiler uncovered a problem with the AML 7054interpreter handling of this prefix. In the case where one or 7055more carats precede a single nameseg, the nameseg was treated as 7056standalone and the search rule (to root) was inadvertently 7057applied. This could cause both the iASL compiler and the 7058interpreter to find the wrong object or to miss the error that 7059should occur if the object does not exist at that exact pathname. 7060 7061Found and fixed the problem where the HP Pavilion DSDT would not 7062load. This was a relatively minor tweak to the table loading code 7063(a problem caused by the unexpected encounter with a method 7064invocation not within a control method), but it does not solve the 7065overall issue of the execution of AML code at the table level. 7066This investigation is still ongoing. 7067 7068Code and Data Size: Current core subsystem library sizes are shown 7069below. These are the code and data sizes for the acpica.lib 7070produced by the Microsoft Visual C++ 6.0 compiler, and these 7071values do not include any ACPI driver or OSPM code. The debug 7072version of the code includes the debug output trace mechanism and 7073has a larger code and data size. Note that these values will vary 7074depending on the efficiency of the compiler and the compiler 7075options used during generation. 7076 7077 Previous Release 7078 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 7079 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 7080 Current Release: 7081 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 7082 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 7083 7084 70852) Linux 7086 7087Remove redundant slab.h include (Brad Hards) 7088 7089Fix several bugs in thermal.c (Herbert Nachtnebel) 7090 7091Make CONFIG_ACPI_BOOT work properly (Pavel Machek) 7092 7093Change acpi_system_suspend to use updated irq functions (Pavel 7094Machek) 7095 7096Export acpi_get_firmware_table (Matthew Wilcox) 7097 7098Use proper root proc entry for ACPI (Kochi Takayoshi) 7099 7100Fix early-boot table parsing (Bjorn Helgaas) 7101 7102 71033) iASL Compiler/Disassembler 7104 7105Reworked the compiler options to make them more consistent and to 7106use two-letter options where appropriate. We were running out of 7107sensible letters. This may break some makefiles, so check the 7108current options list by invoking the compiler with no parameters. 7109 7110Completed the design and implementation of the ASL namepath 7111optimization option for the compiler. This option optimizes all 7112references to named objects to the shortest possible path. The 7113first attempt tries to utilize a single nameseg (4 characters) and 7114the "search-to-root" algorithm used by the interpreter. If that 7115cannot be used (because either the name is not in the search path 7116or there is a conflict with another object with the same name), 7117the pathname is optimized using the carat prefix (usually a 7118shorter string than specifying the entire path from the root.) 7119 7120Implemented support to obtain the DSDT from the Windows registry 7121(when the disassembly option is specified with no input file). 7122Added this code as the implementation for AcpiOsTableOverride in 7123the Windows OSL. Migrated the 16-bit code (used in the AcpiDump 7124utility) to scan memory for the DSDT to the AcpiOsTableOverride 7125function in the DOS OSL to make the disassembler truly OS 7126independent. 7127 7128Implemented a new option to disassemble and compile in one step. 7129When used without an input filename, this option will grab the 7130DSDT from the local machine, disassemble it, and compile it in one 7131step. 7132 7133Added a warning message for invalid escapes (a backslash followed 7134by any character other than the allowable escapes). This catches 7135the quoted string error "\_SB_" (which should be "\\_SB_" ). 7136 7137Also, there are numerous instances in the ACPI specification where 7138this error occurs. 7139 7140Added a compiler option to disable all optimizations. This is 7141basically the "compatibility mode" because by using this option, 7142the AML code will come out exactly the same as other ASL 7143compilers. 7144 7145Added error messages for incorrectly ordered dependent resource 7146functions. This includes: missing EndDependentFn macro at end of 7147dependent resource list, nested dependent function macros (both 7148start and end), and missing StartDependentFn macro. These are 7149common errors that should be caught at compile time. 7150 7151Implemented _OSI support for the disassembler and compiler. _OSI 7152must be included in the namespace for proper disassembly (because 7153the disassembler must know the number of arguments.) 7154 7155Added an "optimization" message type that is optional (off by 7156default). This message is used for all optimizations - including 7157constant folding, integer optimization, and namepath optimization. 7158 7159---------------------------------------- 716025 July 2002. Summary of changes for this release. 7161 7162 71631) ACPI CA Core Subsystem Version 20020725: 7164 7165The AML Disassembler has been enhanced to produce compilable ASL 7166code and has been integrated into the iASL compiler (see below) as 7167well as the single-step disassembly for the AML debugger and the 7168disassembler for the AcpiDump utility. All ACPI 2.0A opcodes, 7169resource templates and macros are fully supported. The 7170disassembler has been tested on over 30 different AML files, 7171producing identical AML when the resulting disassembled ASL file 7172is recompiled with the same ASL compiler. 7173 7174Modified the Resource Manager to allow zero interrupts and zero 7175dma channels during the GetCurrentResources call. This was 7176causing problems on some platforms. 7177 7178Added the AcpiOsRedirectOutput interface to the OSL to simplify 7179output redirection for the AcpiOsPrintf and AcpiOsVprintf 7180interfaces. 7181 7182Code and Data Size: Current core subsystem library sizes are shown 7183below. These are the code and data sizes for the acpica.lib 7184produced by the Microsoft Visual C++ 6.0 compiler, and these 7185values do not include any ACPI driver or OSPM code. The debug 7186version of the code includes the debug output trace mechanism and 7187has a larger code and data size. Note that these values will vary 7188depending on the efficiency of the compiler and the compiler 7189options used during generation. 7190 7191 Previous Release 7192 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 7193 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 7194 Current Release: 7195 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 7196 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 7197 7198 71992) Linux 7200 7201Fixed a panic in the EC driver (Dominik Brodowski) 7202 7203Implemented checksum of the R/XSDT itself during Linux table scan 7204(Richard Schaal) 7205 7206 72073) iASL compiler 7208 7209The AML disassembler is integrated into the compiler. The "-d" 7210option invokes the disassembler to completely disassemble an 7211input AML file, producing as output a text ASL file with the 7212extension ".dsl" (to avoid name collisions with existing .asl 7213source files.) A future enhancement will allow the disassembler 7214to obtain the BIOS DSDT from the registry under Windows. 7215 7216Fixed a problem with the VendorShort and VendorLong resource 7217descriptors where an invalid AML sequence was created. 7218 7219Implemented a fix for BufferData term in the ASL parser. It was 7220inadvertently defined twice, allowing invalid syntax to pass and 7221causing reduction conflicts. 7222 7223Fixed a problem where the Ones opcode could get converted to a 7224value of zero if "Ones" was used where a byte, word or dword value 7225was expected. The 64-bit value is now truncated to the correct 7226size with the correct value. 7227 7228 7229 7230---------------------------------------- 723102 July 2002. Summary of changes for this release. 7232 7233 72341) ACPI CA Core Subsystem Version 20020702: 7235 7236The Table Manager code has been restructured to add several new 7237features. Tables that are not required by the core subsystem 7238(other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer 7239validated in any way and are returned from AcpiGetFirmwareTable if 7240requested. The AcpiOsTableOverride interface is now called for 7241each table that is loaded by the subsystem in order to allow the 7242host to override any table it chooses. Previously, only the DSDT 7243could be overridden. Added one new files, tbrsdt.c and 7244tbgetall.c. 7245 7246Fixed a problem with the conversion of internal package objects to 7247external objects (when a package is returned from a control 7248method.) The return buffer length was set to zero instead of the 7249proper length of the package object. 7250 7251Fixed a reported problem with the use of the RefOf and DeRefOf 7252operators when passing reference arguments to control methods. A 7253new type of Reference object is used internally for references 7254produced by the RefOf operator. 7255 7256Added additional error messages in the Resource Manager to explain 7257AE_BAD_DATA errors when they occur during resource parsing. 7258 7259Split the AcpiEnableSubsystem into two primitives to enable a 7260finer granularity initialization sequence. These two calls should 7261be called in this order: AcpiEnableSubsystem (flags), 7262AcpiInitializeObjects (flags). The flags parameter remains the 7263same. 7264 7265 72662) Linux 7267 7268Updated the ACPI utilities module to understand the new style of 7269fully resolved package objects that are now returned from the core 7270subsystem. This eliminates errors of the form: 7271 7272 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT] 7273 acpi_utils-0430 [145] acpi_evaluate_reference: 7274 Invalid element in package (not a device reference) 7275 7276The method evaluation utility uses the new buffer allocation 7277scheme instead of calling AcpiEvaluate Object twice. 7278 7279Added support for ECDT. This allows the use of the Embedded 7280 7281Controller before the namespace has been fully initialized, which 7282is necessary for ACPI 2.0 support, and for some laptops to 7283initialize properly. (Laptops using ECDT are still rare, so only 7284limited testing was performed of the added functionality.) 7285 7286Fixed memory leaks in the EC driver. 7287 7288Eliminated a brittle code structure in acpi_bus_init(). 7289 7290Eliminated the acpi_evaluate() helper function in utils.c. It is 7291no longer needed since acpi_evaluate_object can optionally 7292allocate memory for the return object. 7293 7294Implemented fix for keyboard hang when getting battery readings on 7295some systems (Stephen White) 7296 7297PCI IRQ routing update (Dominik Brodowski) 7298 7299Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC 7300support 7301 7302---------------------------------------- 730311 June 2002. Summary of changes for this release. 7304 7305 73061) ACPI CA Core Subsystem Version 20020611: 7307 7308Fixed a reported problem where constants such as Zero and One 7309appearing within _PRT packages were not handled correctly within 7310the resource manager code. Originally reported against the ASL 7311compiler because the code generator now optimizes integers to 7312their minimal AML representation (i.e. AML constants if possible.) 7313The _PRT code now handles all AML constant opcodes correctly 7314(Zero, One, Ones, Revision). 7315 7316Fixed a problem with the Concatenate operator in the AML 7317interpreter where a buffer result object was incorrectly marked as 7318not fully evaluated, causing a run-time error of AE_AML_INTERNAL. 7319 7320All package sub-objects are now fully resolved before they are 7321returned from the external ACPI interfaces. This means that name 7322strings are resolved to object handles, and constant operators 7323(Zero, One, Ones, Revision) are resolved to Integers. 7324 7325Implemented immediate resolution of the AML Constant opcodes 7326(Zero, One, Ones, Revision) to Integer objects upon detection 7327within the AML stream. This has simplified and reduced the 7328generated code size of the subsystem by eliminating about 10 7329switch statements for these constants (which previously were 7330contained in Reference objects.) The complicating issues are that 7331the Zero opcode is used as a "placeholder" for unspecified 7332optional target operands and stores to constants are defined to be 7333no-ops. 7334 7335Code and Data Size: Current core subsystem library sizes are shown 7336below. These are the code and data sizes for the acpica.lib 7337produced by the Microsoft Visual C++ 6.0 compiler, and these 7338values do not include any ACPI driver or OSPM code. The debug 7339version of the code includes the debug output trace mechanism and 7340has a larger code and data size. Note that these values will vary 7341depending on the efficiency of the compiler and the compiler 7342options used during generation. 7343 7344 Previous Release 7345 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 7346 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 7347 Current Release: 7348 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 7349 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 7350 7351 73522) Linux 7353 7354 7355Added preliminary support for obtaining _TRA data for PCI root 7356bridges (Bjorn Helgaas). 7357 7358 73593) iASL Compiler Version X2046: 7360 7361Fixed a problem where the "_DDN" reserved name was defined to be a 7362control method with one argument. There are no arguments, and 7363_DDN does not have to be a control method. 7364 7365Fixed a problem with the Linux version of the compiler where the 7366source lines printed with error messages were the wrong lines. 7367This turned out to be the "LF versus CR/LF" difference between 7368Windows and Unix. This appears to be the longstanding issue 7369concerning listing output and error messages. 7370 7371Fixed a problem with the Linux version of compiler where opcode 7372names within error messages were wrong. This was caused by a 7373slight difference in the output of the Flex tool on Linux versus 7374Windows. 7375 7376Fixed a problem with the Linux compiler where the hex output files 7377contained some garbage data caused by an internal buffer overrun. 7378 7379 7380---------------------------------------- 738117 May 2002. Summary of changes for this release. 7382 7383 73841) ACPI CA Core Subsystem Version 20020517: 7385 7386Implemented a workaround to an BIOS bug discovered on the HP 7387OmniBook where the FADT revision number and the table size are 7388inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new 7389behavior is to fallback to using only the ACPI 1.0 fields of the 7390FADT if the table is too small to be a ACPI 2.0 table as claimed 7391by the revision number. Although this is a BIOS bug, this is a 7392case where the workaround is simple enough and with no side 7393effects, so it seemed prudent to add it. A warning message is 7394issued, however. 7395 7396Implemented minimum size checks for the fixed-length ACPI tables - 7397- the FADT and FACS, as well as consistency checks between the 7398revision number and the table size. 7399 7400Fixed a reported problem in the table override support where the 7401new table pointer was incorrectly treated as a physical address 7402instead of a logical address. 7403 7404Eliminated the use of the AE_AML_ERROR exception and replaced it 7405with more descriptive codes. 7406 7407Fixed a problem where an exception would occur if an ASL Field was 7408defined with no named Field Units underneath it (used by some 7409index fields). 7410 7411Code and Data Size: Current core subsystem library sizes are shown 7412below. These are the code and data sizes for the acpica.lib 7413produced by the Microsoft Visual C++ 6.0 compiler, and these 7414values do not include any ACPI driver or OSPM code. The debug 7415version of the code includes the debug output trace mechanism and 7416has a larger code and data size. Note that these values will vary 7417depending on the efficiency of the compiler and the compiler 7418options used during generation. 7419 7420 Previous Release 7421 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 7422 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 7423 Current Release: 7424 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 7425 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 7426 7427 7428 74292) Linux 7430 7431Much work done on ACPI init (MADT and PCI IRQ routing support). 7432(Paul D. and Dominik Brodowski) 7433 7434Fix PCI IRQ-related panic on boot (Sam Revitch) 7435 7436Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno) 7437 7438Fix "MHz" typo (Dominik Brodowski) 7439 7440Fix RTC year 2000 issue (Dominik Brodowski) 7441 7442Preclude multiple button proc entries (Eric Brunet) 7443 7444Moved arch-specific code out of include/platform/aclinux.h 7445 74463) iASL Compiler Version X2044: 7447 7448Implemented error checking for the string used in the EISAID macro 7449(Usually used in the definition of the _HID object.) The code now 7450strictly enforces the PnP format - exactly 7 characters, 3 7451uppercase letters and 4 hex digits. 7452 7453If a raw string is used in the definition of the _HID object 7454(instead of the EISAID macro), the string must contain all 7455alphanumeric characters (e.g., "*PNP0011" is not allowed because 7456of the asterisk.) 7457 7458Implemented checking for invalid use of ACPI reserved names for 7459most of the name creation operators (Name, Device, Event, Mutex, 7460OperationRegion, PowerResource, Processor, and ThermalZone.) 7461Previously, this check was only performed for control methods. 7462 7463Implemented an additional check on the Name operator to emit an 7464error if a reserved name that must be implemented in ASL as a 7465control method is used. We know that a reserved name must be a 7466method if it is defined with input arguments. 7467 7468The warning emitted when a namespace object reference is not found 7469during the cross reference phase has been changed into an error. 7470The "External" directive should be used for names defined in other 7471modules. 7472 7473 74744) Tools and Utilities 7475 7476The 16-bit tools (adump16 and aexec16) have been regenerated and 7477tested. 7478 7479Fixed a problem with the output of both acpidump and adump16 where 7480the indentation of closing parentheses and brackets was not 7481 7482aligned properly with the parent block. 7483 7484 7485---------------------------------------- 748603 May 2002. Summary of changes for this release. 7487 7488 74891) ACPI CA Core Subsystem Version 20020503: 7490 7491Added support a new OSL interface that allows the host operating 7492 7493system software to override the DSDT found in the firmware - 7494AcpiOsTableOverride. With this interface, the OSL can examine the 7495version of the firmware DSDT and replace it with a different one 7496if desired. 7497 7498Added new external interfaces for accessing ACPI registers from 7499device drivers and other system software - AcpiGetRegister and 7500AcpiSetRegister. This was simply an externalization of the 7501existing AcpiHwBitRegister interfaces. 7502 7503Fixed a regression introduced in the previous build where the 7504ASL/AML CreateField operator always returned an error, 7505"destination must be a NS Node". 7506 7507Extended the maximum time (before failure) to successfully enable 7508ACPI mode to 3 seconds. 7509 7510Code and Data Size: Current core subsystem library sizes are shown 7511below. These are the code and data sizes for the acpica.lib 7512produced by the Microsoft Visual C++ 6.0 compiler, and these 7513values do not include any ACPI driver or OSPM code. The debug 7514version of the code includes the debug output trace mechanism and 7515has a larger code and data size. Note that these values will vary 7516depending on the efficiency of the compiler and the compiler 7517options used during generation. 7518 7519 Previous Release 7520 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 7521 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 7522 Current Release: 7523 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 7524 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 7525 7526 75272) Linux 7528 7529Enhanced ACPI init code for SMP. We are now fully MPS and $PIR- 7530free. While 3 out of 4 of our in-house systems work fine, the last 7531one still hangs when testing the LAPIC timer. 7532 7533Renamed many files in 2.5 kernel release to omit "acpi_" from the 7534name. 7535 7536Added warning on boot for Presario 711FR. 7537 7538Sleep improvements (Pavel Machek) 7539 7540ACPI can now be built without CONFIG_PCI enabled. 7541 7542IA64: Fixed memory map functions (JI Lee) 7543 7544 75453) iASL Compiler Version X2043: 7546 7547Added support to allow the compiler to be integrated into the MS 7548VC++ development environment for one-button compilation of single 7549files or entire projects -- with error-to-source-line mapping. 7550 7551Implemented support for compile-time constant folding for the 7552Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0 7553specification. This allows the ASL writer to use expressions 7554instead of Integer/Buffer/String constants in terms that must 7555evaluate to constants at compile time and will also simplify the 7556emitted AML in any such sub-expressions that can be folded 7557(evaluated at compile-time.) This increases the size of the 7558compiler significantly because a portion of the ACPI CA AML 7559interpreter is included within the compiler in order to pre- 7560evaluate constant expressions. 7561 7562 7563Fixed a problem with the "Unicode" ASL macro that caused the 7564compiler to fault. (This macro is used in conjunction with the 7565_STR reserved name.) 7566 7567Implemented an AML opcode optimization to use the Zero, One, and 7568Ones opcodes where possible to further reduce the size of integer 7569constants and thus reduce the overall size of the generated AML 7570code. 7571 7572Implemented error checking for new reserved terms for ACPI version 75732.0A. 7574 7575Implemented the -qr option to display the current list of ACPI 7576reserved names known to the compiler. 7577 7578Implemented the -qc option to display the current list of ASL 7579operators that are allowed within constant expressions and can 7580therefore be folded at compile time if the operands are constants. 7581 7582 75834) Documentation 7584 7585Updated the Programmer's Reference for new interfaces, data types, 7586and memory allocation model options. 7587 7588Updated the iASL Compiler User Reference to apply new format and 7589add information about new features and options. 7590 7591---------------------------------------- 759219 April 2002. Summary of changes for this release. 7593 75941) ACPI CA Core Subsystem Version 20020419: 7595 7596The source code base for the Core Subsystem has been completely 7597cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit 7598versions. The Lint option files used are included in the 7599/acpi/generate/lint directory. 7600 7601Implemented enhanced status/error checking across the entire 7602Hardware manager subsystem. Any hardware errors (reported from 7603the OSL) are now bubbled up and will abort a running control 7604method. 7605 7606 7607Fixed a problem where the per-ACPI-table integer width (32 or 64) 7608was stored only with control method nodes, causing a fault when 7609non-control method code was executed during table loading. The 7610solution implemented uses a global variable to indicate table 7611width across the entire ACPI subsystem. Therefore, ACPI CA does 7612not support mixed integer widths across different ACPI tables 7613(DSDT, SSDT). 7614 7615Fixed a problem where NULL extended fields (X fields) in an ACPI 76162.0 ACPI FADT caused the table load to fail. Although the 7617existing ACPI specification is a bit fuzzy on this topic, the new 7618behavior is to fall back on a ACPI 1.0 field if the corresponding 7619ACPI 2.0 X field is zero (even though the table revision indicates 7620a full ACPI 2.0 table.) The ACPI specification will be updated to 7621clarify this issue. 7622 7623Fixed a problem with the SystemMemory operation region handler 7624where memory was always accessed byte-wise even if the AML- 7625specified access width was larger than a byte. This caused 7626problems on systems with memory-mapped I/O. Memory is now 7627accessed with the width specified. On systems that do not support 7628non-aligned transfers, a check is made to guarantee proper address 7629alignment before proceeding in order to avoid an AML-caused 7630alignment fault within the kernel. 7631 7632 7633Fixed a problem with the ExtendedIrq resource where only one byte 7634of the 4-byte Irq field was extracted. 7635 7636Fixed the AcpiExDigitsNeeded() procedure to support _UID. This 7637function was out of date and required a rewrite. 7638 7639Code and Data Size: Current core subsystem library sizes are shown 7640below. These are the code and data sizes for the acpica.lib 7641produced by the Microsoft Visual C++ 6.0 compiler, and these 7642values do not include any ACPI driver or OSPM code. The debug 7643version of the code includes the debug output trace mechanism and 7644has a larger code and data size. Note that these values will vary 7645depending on the efficiency of the compiler and the compiler 7646options used during generation. 7647 7648 Previous Release 7649 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 7650 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 7651 Current Release: 7652 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 7653 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 7654 7655 76562) Linux 7657 7658PCI IRQ routing fixes (Dominik Brodowski) 7659 7660 76613) iASL Compiler Version X2042: 7662 7663Implemented an additional compile-time error check for a field 7664unit whose size + minimum access width would cause a run-time 7665access beyond the end-of-region. Previously, only the field size 7666itself was checked. 7667 7668The Core subsystem and iASL compiler now share a common parse 7669object in preparation for compile-time evaluation of the type 76703/4/5 ASL operators. 7671 7672 7673---------------------------------------- 7674Summary of changes for this release: 03_29_02 7675 76761) ACPI CA Core Subsystem Version 20020329: 7677 7678Implemented support for late evaluation of TermArg operands to 7679Buffer and Package objects. This allows complex expressions to be 7680used in the declarations of these object types. 7681 7682Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI 76831.0, if the field was larger than 32 bits, it was returned as a 7684buffer - otherwise it was returned as an integer. In ACPI 2.0, 7685the field is returned as a buffer only if the field is larger than 768664 bits. The TableRevision is now considered when making this 7687conversion to avoid incompatibility with existing ASL code. 7688 7689Implemented logical addressing for AcpiOsGetRootPointer. This 7690allows an RSDP with either a logical or physical address. With 7691this support, the host OS can now override all ACPI tables with 7692one logical RSDP. Includes implementation of "typed" pointer 7693support to allow a common data type for both physical and logical 7694pointers internally. This required a change to the 7695AcpiOsGetRootPointer interface. 7696 7697Implemented the use of ACPI 2.0 Generic Address Structures for all 7698GPE, Fixed Event, and PM Timer I/O. This allows the use of memory 7699mapped I/O for these ACPI features. 7700 7701Initialization now ignores not only non-required tables (All 7702tables other than the FADT, FACS, DSDT, and SSDTs), but also does 7703not validate the table headers of unrecognized tables. 7704 7705Fixed a problem where a notify handler could only be 7706installed/removed on an object of type Device. All "notify" 7707 7708objects are now supported -- Devices, Processor, Power, and 7709Thermal. 7710 7711Removed most verbosity from the ACPI_DB_INFO debug level. Only 7712critical information is returned when this debug level is enabled. 7713 7714Code and Data Size: Current core subsystem library sizes are shown 7715below. These are the code and data sizes for the acpica.lib 7716produced by the Microsoft Visual C++ 6.0 compiler, and these 7717values do not include any ACPI driver or OSPM code. The debug 7718version of the code includes the debug output trace mechanism and 7719has a larger code and data size. Note that these values will vary 7720depending on the efficiency of the compiler and the compiler 7721options used during generation. 7722 7723 Previous Release 7724 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 7725 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 7726 Current Release: 7727 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 7728 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 7729 7730 77312) Linux: 7732 7733The processor driver (acpi_processor.c) now fully supports ACPI 77342.0-based processor performance control (e.g. Intel(R) 7735SpeedStep(TM) technology) Note that older laptops that only have 7736the Intel "applet" interface are not supported through this. The 7737'limit' and 'performance' interface (/proc) are fully functional. 7738[Note that basic policy for controlling performance state 7739transitions will be included in the next version of ospmd.] The 7740idle handler was modified to more aggressively use C2, and PIIX4 7741errata handling underwent a complete overhaul (big thanks to 7742Dominik Brodowski). 7743 7744Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR- 7745based devices in the ACPI namespace are now dynamically bound 7746(associated) with their PCI counterparts (e.g. PCI1->01:00.0). 7747This allows, among other things, ACPI to resolve bus numbers for 7748subordinate PCI bridges. 7749 7750Enhanced PCI IRQ routing to get the proper bus number for _PRT 7751entries defined underneath PCI bridges. 7752 7753Added IBM 600E to bad bios list due to invalid _ADR value for 7754PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing. 7755 7756In the process of adding full MADT support (e.g. IOAPIC) for IA32 7757(acpi.c, mpparse.c) -- stay tuned. 7758 7759Added back visual differentiation between fixed-feature and 7760control-method buttons in dmesg. Buttons are also subtyped (e.g. 7761button/power/PWRF) to simplify button identification. 7762 7763We no longer use -Wno-unused when compiling debug. Please ignore 7764any "_THIS_MODULE defined but not used" messages. 7765 7766Can now shut down the system using "magic sysrq" key. 7767 7768 77693) iASL Compiler version 2041: 7770 7771Fixed a problem where conversion errors for hex/octal/decimal 7772constants were not reported. 7773 7774Implemented a fix for the General Register template Address field. 7775This field was 8 bits when it should be 64. 7776 7777Fixed a problem where errors/warnings were no longer being emitted 7778within the listing output file. 7779 7780Implemented the ACPI 2.0A restriction on ACPI Table Signatures to 7781exactly 4 characters, alphanumeric only. 7782 7783 7784 7785 7786---------------------------------------- 7787Summary of changes for this release: 03_08_02 7788 7789 77901) ACPI CA Core Subsystem Version 20020308: 7791 7792Fixed a problem with AML Fields where the use of the "AccessAny" 7793keyword could cause an interpreter error due to attempting to read 7794or write beyond the end of the parent Operation Region. 7795 7796Fixed a problem in the SystemMemory Operation Region handler where 7797an attempt was made to map memory beyond the end of the region. 7798This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY" 7799errors on some Linux systems. 7800 7801Fixed a problem where the interpreter/namespace "search to root" 7802algorithm was not functioning for some object types. Relaxed the 7803internal restriction on the search to allow upsearches for all 7804external object types as well as most internal types. 7805 7806 78072) Linux: 7808 7809We now use safe_halt() macro versus individual calls to sti | hlt. 7810 7811Writing to the processor limit interface should now work. "echo 1" 7812will increase the limit, 2 will decrease, and 0 will reset to the 7813 7814default. 7815 7816 78173) ASL compiler: 7818 7819Fixed segfault on Linux version. 7820 7821 7822---------------------------------------- 7823Summary of changes for this release: 02_25_02 7824 78251) ACPI CA Core Subsystem: 7826 7827 7828Fixed a problem where the GPE bit masks were not initialized 7829properly, causing erratic GPE behavior. 7830 7831Implemented limited support for multiple calling conventions. The 7832code can be generated with either the VPL (variable parameter 7833list, or "C") convention, or the FPL (fixed parameter list, or 7834"Pascal") convention. The core subsystem is about 3.4% smaller 7835when generated with FPL. 7836 7837 78382) Linux 7839 7840Re-add some /proc/acpi/event functionality that was lost during 7841the rewrite 7842 7843Resolved issue with /proc events for fixed-feature buttons showing 7844up as the system device. 7845 7846Fixed checks on C2/C3 latencies to be inclusive of maximum values. 7847 7848Replaced AE_ERRORs in acpi_osl.c with more specific error codes. 7849 7850Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi" 7851 7852Fixed limit interface & usage to fix bugs with passive cooling 7853hysterisis. 7854 7855Restructured PRT support. 7856 7857 7858---------------------------------------- 7859Summary of changes for this label: 02_14_02 7860 7861 78621) ACPI CA Core Subsystem: 7863 7864Implemented support in AcpiLoadTable to allow loading of FACS and 7865FADT tables. 7866 7867Suport for the now-obsolete interim 0.71 64-bit ACPI tables has 7868been removed. All 64-bit platforms should be migrated to the ACPI 78692.0 tables. The actbl71.h header has been removed from the source 7870tree. 7871 7872All C macros defined within the subsystem have been prefixed with 7873"ACPI_" to avoid collision with other system include files. 7874 7875Removed the return value for the two AcpiOsPrint interfaces, since 7876it is never used and causes lint warnings for ignoring the return 7877value. 7878 7879Added error checking to all internal mutex acquire and release 7880calls. Although a failure from one of these interfaces is 7881probably a fatal system error, these checks will cause the 7882immediate abort of the currently executing method or interface. 7883 7884Fixed a problem where the AcpiSetCurrentResources interface could 7885fault. This was a side effect of the deployment of the new memory 7886allocation model. 7887 7888Fixed a couple of problems with the Global Lock support introduced 7889in the last major build. The "common" (1.0/2.0) internal FACS was 7890being overwritten with the FACS signature and clobbering the 7891Global Lock pointer. Also, the actual firmware FACS was being 7892unmapped after construction of the "common" FACS, preventing 7893access to the actual Global Lock field within it. The "common" 7894internal FACS is no longer installed as an actual ACPI table; it 7895is used simply as a global. 7896 7897Code and Data Size: Current core subsystem library sizes are shown 7898below. These are the code and data sizes for the acpica.lib 7899produced by the Microsoft Visual C++ 6.0 compiler, and these 7900values do not include any ACPI driver or OSPM code. The debug 7901version of the code includes the debug output trace mechanism and 7902has a larger code and data size. Note that these values will vary 7903depending on the efficiency of the compiler and the compiler 7904options used during generation. 7905 7906 Previous Release (02_07_01) 7907 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 7908 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 7909 Current Release: 7910 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 7911 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 7912 7913 79142) Linux 7915 7916Updated Linux-specific code for core macro and OSL interface 7917changes described above. 7918 7919Improved /proc/acpi/event. It now can be opened only once and has 7920proper poll functionality. 7921 7922Fixed and restructured power management (acpi_bus). 7923 7924Only create /proc "view by type" when devices of that class exist. 7925 7926Fixed "charging/discharging" bug (and others) in acpi_battery. 7927 7928Improved thermal zone code. 7929 7930 79313) ASL Compiler, version X2039: 7932 7933 7934Implemented the new compiler restriction on ASL String hex/octal 7935escapes to non-null, ASCII values. An error results if an invalid 7936value is used. (This will require an ACPI 2.0 specification 7937change.) 7938 7939AML object labels that are output to the optional C and ASM source 7940are now prefixed with both the ACPI table signature and table ID 7941to help guarantee uniqueness within a large BIOS project. 7942 7943 7944---------------------------------------- 7945Summary of changes for this label: 02_01_02 7946 79471) ACPI CA Core Subsystem: 7948 7949ACPI 2.0 support is complete in the entire Core Subsystem and the 7950ASL compiler. All new ACPI 2.0 operators are implemented and all 7951other changes for ACPI 2.0 support are complete. With 7952simultaneous code and data optimizations throughout the subsystem, 7953ACPI 2.0 support has been implemented with almost no additional 7954cost in terms of code and data size. 7955 7956Implemented a new mechanism for allocation of return buffers. If 7957the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will 7958be allocated on behalf of the caller. Consolidated all return 7959buffer validation and allocation to a common procedure. Return 7960buffers will be allocated via the primary OSL allocation interface 7961since it appears that a separate pool is not needed by most users. 7962If a separate pool is required for these buffers, the caller can 7963still use the original mechanism and pre-allocate the buffer(s). 7964 7965Implemented support for string operands within the DerefOf 7966operator. 7967 7968Restructured the Hardware and Event managers to be table driven, 7969simplifying the source code and reducing the amount of generated 7970code. 7971 7972Split the common read/write low-level ACPI register bitfield 7973procedure into a separate read and write, simplifying the code 7974considerably. 7975 7976Obsoleted the AcpiOsCallocate OSL interface. This interface was 7977used only a handful of times and didn't have enough critical mass 7978for a separate interface. Replaced with a common calloc procedure 7979in the core. 7980 7981Fixed a reported problem with the GPE number mapping mechanism 7982that allows GPE1 numbers to be non-contiguous with GPE0. 7983Reorganized the GPE information and shrunk a large array that was 7984originally large enough to hold info for all possible GPEs (256) 7985to simply large enough to hold all GPEs up to the largest GPE 7986number on the machine. 7987 7988Fixed a reported problem with resource structure alignment on 64- 7989bit platforms. 7990 7991Changed the AcpiEnableEvent and AcpiDisableEvent external 7992interfaces to not require any flags for the common case of 7993enabling/disabling a GPE. 7994 7995Implemented support to allow a "Notify" on a Processor object. 7996 7997Most TBDs in comments within the source code have been resolved 7998and eliminated. 7999 8000 8001Fixed a problem in the interpreter where a standalone parent 8002prefix (^) was not handled correctly in the interpreter and 8003debugger. 8004 8005Removed obsolete and unnecessary GPE save/restore code. 8006 8007Implemented Field support in the ASL Load operator. This allows a 8008table to be loaded from a named field, in addition to loading a 8009table directly from an Operation Region. 8010 8011Implemented timeout and handle support in the external Global Lock 8012interfaces. 8013 8014Fixed a problem in the AcpiDump utility where pathnames were no 8015longer being generated correctly during the dump of named objects. 8016 8017Modified the AML debugger to give a full display of if/while 8018predicates instead of just one AML opcode at a time. (The 8019predicate can have several nested ASL statements.) The old method 8020was confusing during single stepping. 8021 8022Code and Data Size: Current core subsystem library sizes are shown 8023below. These are the code and data sizes for the acpica.lib 8024produced by the Microsoft Visual C++ 6.0 compiler, and these 8025values do not include any ACPI driver or OSPM code. The debug 8026version of the code includes the debug output trace mechanism and 8027has a larger code and data size. Note that these values will vary 8028depending on the efficiency of the compiler and the compiler 8029options used during generation. 8030 8031 Previous Release (12_18_01) 8032 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 8033 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 8034 Current Release: 8035 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 8036 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 8037 80382) Linux 8039 8040 Implemented fix for PIIX reverse throttling errata (Processor 8041driver) 8042 8043Added new Limit interface (Processor and Thermal drivers) 8044 8045New thermal policy (Thermal driver) 8046 8047Many updates to /proc 8048 8049Battery "low" event support (Battery driver) 8050 8051Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers) 8052 8053IA32 - IA64 initialization unification, no longer experimental 8054 8055Menuconfig options redesigned 8056 80573) ASL Compiler, version X2037: 8058 8059Implemented several new output features to simplify integration of 8060AML code into firmware: 1) Output the AML in C source code with 8061labels for each named ASL object. The original ASL source code 8062is interleaved as C comments. 2) Output the AML in ASM source code 8063with labels and interleaved ASL source. 3) Output the AML in 8064raw hex table form, in either C or ASM. 8065 8066Implemented support for optional string parameters to the 8067LoadTable operator. 8068 8069Completed support for embedded escape sequences within string 8070literals. The compiler now supports all single character escapes 8071as well as the Octal and Hex escapes. Note: the insertion of a 8072null byte into a string literal (via the hex/octal escape) causes 8073the string to be immediately terminated. A warning is issued. 8074 8075Fixed a problem where incorrect AML was generated for the case 8076where an ASL namepath consists of a single parent prefix ( 8077 8078) with no trailing name segments. 8079 8080The compiler has been successfully generated with a 64-bit C 8081compiler. 8082 8083 8084 8085 8086---------------------------------------- 8087Summary of changes for this label: 12_18_01 8088 80891) Linux 8090 8091Enhanced blacklist with reason and severity fields. Any table's 8092signature may now be used to identify a blacklisted system. 8093 8094Call _PIC control method to inform the firmware which interrupt 8095model the OS is using. Turn on any disabled link devices. 8096 8097Cleaned up busmgr /proc error handling (Andreas Dilger) 8098 8099 2) ACPI CA Core Subsystem: 8100 8101Implemented ACPI 2.0 semantics for the "Break" operator (Exit from 8102while loop) 8103 8104Completed implementation of the ACPI 2.0 "Continue", 8105"ConcatenateResTemplate", "DataTableRegion", and "LoadTable" 8106operators. All new ACPI 2.0 operators are now implemented in both 8107the ASL compiler and the AML interpreter. The only remaining ACPI 81082.0 task is support for the String data type in the DerefOf 8109operator. Fixed a problem with AcquireMutex where the status code 8110was lost if the caller had to actually wait for the mutex. 8111 8112Increased the maximum ASL Field size from 64K bits to 4G bits. 8113 8114Completed implementation of the external Global Lock interfaces -- 8115AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and 8116Handler parameters were added. 8117 8118Completed another pass at removing warnings and issues when 8119compiling with 64-bit compilers. The code now compiles cleanly 8120with the Intel 64-bit C/C++ compiler. Most notably, the pointer 8121add and subtract (diff) macros have changed considerably. 8122 8123 8124Created and deployed a new ACPI_SIZE type that is 64-bits wide on 812564-bit platforms, 32-bits on all others. This type is used 8126wherever memory allocation and/or the C sizeof() operator is used, 8127and affects the OSL memory allocation interfaces AcpiOsAllocate 8128and AcpiOsCallocate. 8129 8130Implemented sticky user breakpoints in the AML debugger. 8131 8132Code and Data Size: Current core subsystem library sizes are shown 8133below. These are the code and data sizes for the acpica.lib 8134produced by the Microsoft Visual C++ 6.0 compiler, and these 8135values do not include any ACPI driver or OSPM code. The debug 8136version of the code includes the debug output trace mechanism and 8137has a larger code and data size. Note that these values will vary 8138depending on the efficiency of the compiler and the compiler 8139options used during generation. 8140 8141 Previous Release (12_05_01) 8142 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 8143 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 8144 Current Release: 8145 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 8146 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 8147 8148 3) ASL Compiler, version X2034: 8149 8150Now checks for (and generates an error if detected) the use of a 8151Break or Continue statement without an enclosing While statement. 8152 8153 8154Successfully generated the compiler with the Intel 64-bit C 8155compiler. 8156 8157 ---------------------------------------- 8158Summary of changes for this label: 12_05_01 8159 8160 1) ACPI CA Core Subsystem: 8161 8162The ACPI 2.0 CopyObject operator is fully implemented. This 8163operator creates a new copy of an object (and is also used to 8164bypass the "implicit conversion" mechanism of the Store operator.) 8165 8166The ACPI 2.0 semantics for the SizeOf operator are fully 8167implemented. The change is that performing a SizeOf on a 8168reference object causes an automatic dereference of the object to 8169tha actual value before the size is evaluated. This behavior was 8170undefined in ACPI 1.0. 8171 8172The ACPI 2.0 semantics for the Extended IRQ resource descriptor 8173have been implemented. The interrupt polarity and mode are now 8174independently set. 8175 8176Fixed a problem where ASL Constants (Zero, One, Ones, Revision) 8177appearing in Package objects were not properly converted to 8178integers when the internal Package was converted to an external 8179object (via the AcpiEvaluateObject interface.) 8180 8181Fixed a problem with the namespace object deletion mechanism for 8182objects created by control methods. There were two parts to this 8183problem: 1) Objects created during the initialization phase method 8184parse were not being deleted, and 2) The object owner ID mechanism 8185to track objects was broken. 8186 8187Fixed a problem where the use of the ASL Scope operator within a 8188control method would result in an invalid opcode exception. 8189 8190Fixed a problem introduced in the previous label where the buffer 8191length required for the _PRT structure was not being returned 8192correctly. 8193 8194Code and Data Size: Current core subsystem library sizes are shown 8195below. These are the code and data sizes for the acpica.lib 8196produced by the Microsoft Visual C++ 6.0 compiler, and these 8197values do not include any ACPI driver or OSPM code. The debug 8198version of the code includes the debug output trace mechanism and 8199has a larger code and data size. Note that these values will vary 8200depending on the efficiency of the compiler and the compiler 8201options used during generation. 8202 8203 Previous Release (11_20_01) 8204 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 8205 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 8206 8207 Current Release: 8208 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 8209 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 8210 8211 2) Linux: 8212 8213Updated all files to apply cleanly against 2.4.16. 8214 8215Added basic PCI Interrupt Routing Table (PRT) support for IA32 8216(acpi_pci.c), and unified the PRT code for IA32 and IA64. This 8217version supports both static and dyanmic PRT entries, but dynamic 8218entries are treated as if they were static (not yet 8219reconfigurable). Architecture- specific code to use this data is 8220absent on IA32 but should be available shortly. 8221 8222Changed the initialization sequence to start the ACPI interpreter 8223(acpi_init) prior to initialization of the PCI driver (pci_init) 8224in init/main.c. This ordering is required to support PRT and 8225facilitate other (future) enhancement. A side effect is that the 8226ACPI bus driver and certain device drivers can no longer be loaded 8227as modules. 8228 8229Modified the 'make menuconfig' options to allow PCI Interrupt 8230Routing support to be included without the ACPI Bus and other 8231device drivers. 8232 8233 3) ASL Compiler, version X2033: 8234 8235Fixed some issues with the use of the new CopyObject and 8236DataTableRegion operators. Both are fully functional. 8237 8238 ---------------------------------------- 8239Summary of changes for this label: 11_20_01 8240 8241 20 November 2001. Summary of changes for this release. 8242 8243 1) ACPI CA Core Subsystem: 8244 8245Updated Index support to match ACPI 2.0 semantics. Storing a 8246Integer, String, or Buffer to an Index of a Buffer will store only 8247the least-significant byte of the source to the Indexed buffer 8248byte. Multiple writes are not performed. 8249 8250Fixed a problem where the access type used in an AccessAs ASL 8251operator was not recorded correctly into the field object. 8252 8253Fixed a problem where ASL Event objects were created in a 8254signalled state. Events are now created in an unsignalled state. 8255 8256The internal object cache is now purged after table loading and 8257initialization to reduce the use of dynamic kernel memory -- on 8258the assumption that object use is greatest during the parse phase 8259of the entire table (versus the run-time use of individual control 8260methods.) 8261 8262ACPI 2.0 variable-length packages are now fully operational. 8263 8264Code and Data Size: Code and Data optimizations have permitted new 8265feature development with an actual reduction in the library size. 8266Current core subsystem library sizes are shown below. These are 8267the code and data sizes for the acpica.lib produced by the 8268Microsoft Visual C++ 6.0 compiler, and these values do not include 8269any ACPI driver or OSPM code. The debug version of the code 8270includes the debug output trace mechanism and has a larger code 8271and data size. Note that these values will vary depending on the 8272efficiency of the compiler and the compiler options used during 8273generation. 8274 8275 Previous Release (11_09_01): 8276 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 8277 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 8278 8279 Current Release: 8280 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 8281 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 8282 8283 2) Linux: 8284 8285Enhanced the ACPI boot-time initialization code to allow the use 8286of Local APIC tables for processor enumeration on IA-32, and to 8287pave the way for a fully MPS-free boot (on SMP systems) in the 8288near future. This functionality replaces 8289arch/i386/kernel/acpitables.c, which was introduced in an earlier 82902.4.15-preX release. To enable this feature you must add 8291"acpi_boot=on" to the kernel command line -- see the help entry 8292for CONFIG_ACPI_BOOT for more information. An IA-64 release is in 8293the works... 8294 8295Restructured the configuration options to allow boot-time table 8296parsing support without inclusion of the ACPI Interpreter (and 8297other) code. 8298 8299NOTE: This release does not include fixes for the reported events, 8300power-down, and thermal passive cooling issues (coming soon). 8301 8302 3) ASL Compiler: 8303 8304Added additional typechecking for Fields within restricted access 8305Operation Regions. All fields within EC and CMOS regions must be 8306declared with ByteAcc. All fields withing SMBus regions must be 8307declared with the BufferAcc access type. 8308 8309Fixed a problem where the listing file output of control methods 8310no longer interleaved the actual AML code with the ASL source 8311code. 8312 8313 8314 8315 8316---------------------------------------- 8317Summary of changes for this label: 11_09_01 8318 83191) ACPI CA Core Subsystem: 8320 8321Implemented ACPI 2.0-defined support for writes to fields with a 8322Buffer, String, or Integer source operand that is smaller than the 8323target field. In these cases, the source operand is zero-extended 8324to fill the target field. 8325 8326Fixed a problem where a Field starting bit offset (within the 8327parent operation region) was calculated incorrectly if the 8328 8329alignment of the field differed from the access width. This 8330affected CreateWordField, CreateDwordField, CreateQwordField, and 8331possibly other fields that use the "AccessAny" keyword. 8332 8333Fixed a problem introduced in the 11_02_01 release where indirect 8334stores through method arguments did not operate correctly. 8335 83362) Linux: 8337 8338Implemented boot-time ACPI table parsing support 8339(CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code 8340facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than 8341legacy BIOS interfaces (e.g. MPS) for the configuration of system 8342processors, memory, and interrupts during setup_arch(). Note that 8343this patch does not include the required architecture-specific 8344changes required to apply this information -- subsequent patches 8345will be posted for both IA32 and IA64 to achieve this. 8346 8347Added low-level sleep support for IA32 platforms, courtesy of Pat 8348Mochel. This allows IA32 systems to transition to/from various 8349sleeping states (e.g. S1, S3), although the lack of a centralized 8350driver model and power-manageable drivers will prevent its 8351(successful) use on most systems. 8352 8353Revamped the ACPI 'menuconfig' layout: created new "ACPI Support" 8354submenu, unified IA32 and IA64 options, added new "Boot using ACPI 8355tables" option, etc. 8356 8357Increased the default timeout for the EC driver from 1ms to 10ms 8358(1000 cycles of 10us) to try to address AE_TIME errors during EC 8359transactions. 8360 8361 ---------------------------------------- 8362Summary of changes for this label: 11_02_01 8363 83641) ACPI CA Core Subsystem: 8365 8366ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access 8367(QWordAcc keyword). All ACPI 2.0 64-bit support is now 8368implemented. 8369 8370OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required 8371changes to support ACPI 2.0 Qword field access. Read/Write 8372PciConfiguration(), Read/Write Memory(), and Read/Write Port() now 8373accept an ACPI_INTEGER (64 bits) as the value parameter. Also, 8374the value parameter for the address space handler interface is now 8375an ACPI_INTEGER. OSL implementations of these interfaces must now 8376handle the case where the Width parameter is 64. 8377 8378Index Fields: Fixed a problem where unaligned bit assembly and 8379disassembly for IndexFields was not supported correctly. 8380 8381Index and Bank Fields: Nested Index and Bank Fields are now 8382supported. During field access, a check is performed to ensure 8383that the value written to an Index or Bank register is not out of 8384the range of the register. The Index (or Bank) register is 8385written before each access to the field data. Future support will 8386include allowing individual IndexFields to be wider than the 8387DataRegister width. 8388 8389Fields: Fixed a problem where the AML interpreter was incorrectly 8390attempting to write beyond the end of a Field/OpRegion. This was 8391a boundary case that occurred when a DWORD field was written to a 8392BYTE access OpRegion, forcing multiple writes and causing the 8393interpreter to write one datum too many. 8394 8395Fields: Fixed a problem with Field/OpRegion access where the 8396starting bit address of a field was incorrectly calculated if the 8397current access type was wider than a byte (WordAcc, DwordAcc, or 8398QwordAcc). 8399 8400Fields: Fixed a problem where forward references to individual 8401FieldUnits (individual Field names within a Field definition) were 8402not resolved during the AML table load. 8403 8404Fields: Fixed a problem where forward references from a Field 8405definition to the parent Operation Region definition were not 8406resolved during the AML table load. 8407 8408Fields: Duplicate FieldUnit names within a scope are now detected 8409during AML table load. 8410 8411Acpi Interfaces: Fixed a problem where the AcpiGetName() interface 8412returned an incorrect name for the root node. 8413 8414Code and Data Size: Code and Data optimizations have permitted new 8415feature development with an actual reduction in the library size. 8416Current core subsystem library sizes are shown below. These are 8417the code and data sizes for the acpica.lib produced by the 8418Microsoft Visual C++ 6.0 compiler, and these values do not include 8419any ACPI driver or OSPM code. The debug version of the code 8420includes the debug output trace mechanism and has a larger code 8421and data size. Note that these values will vary depending on the 8422efficiency of the compiler and the compiler options used during 8423generation. 8424 8425 Previous Release (10_18_01): 8426 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 8427 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 8428 8429 Current Release: 8430 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 8431 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 8432 8433 2) Linux: 8434 8435Improved /proc processor output (Pavel Machek) Re-added 8436MODULE_LICENSE("GPL") to all modules. 8437 8438 3) ASL Compiler version X2030: 8439 8440Duplicate FieldUnit names within a scope are now detected and 8441flagged as errors. 8442 8443 4) Documentation: 8444 8445Programmer Reference updated to reflect OSL and address space 8446handler interface changes described above. 8447 8448---------------------------------------- 8449Summary of changes for this label: 10_18_01 8450 8451ACPI CA Core Subsystem: 8452 8453Fixed a problem with the internal object reference count mechanism 8454that occasionally caused premature object deletion. This resolves 8455all of the outstanding problem reports where an object is deleted 8456in the middle of an interpreter evaluation. Although this problem 8457only showed up in rather obscure cases, the solution to the 8458problem involved an adjustment of all reference counts involving 8459objects attached to namespace nodes. 8460 8461Fixed a problem with Field support in the interpreter where 8462writing to an aligned field whose length is an exact multiple (2 8463or greater) of the field access granularity would cause an attempt 8464to write beyond the end of the field. 8465 8466The top level AML opcode execution functions within the 8467interpreter have been renamed with a more meaningful and 8468consistent naming convention. The modules exmonad.c and 8469exdyadic.c were eliminated. New modules are exoparg1.c, 8470exoparg2.c, exoparg3.c, and exoparg6.c. 8471 8472Support for the ACPI 2.0 "Mid" ASL operator has been implemented. 8473 8474Fixed a problem where the AML debugger was causing some internal 8475objects to not be deleted during subsystem termination. 8476 8477Fixed a problem with the external AcpiEvaluateObject interface 8478where the subsystem would fault if the named object to be 8479evaluated refered to a constant such as Zero, Ones, etc. 8480 8481Fixed a problem with IndexFields and BankFields where the 8482subsystem would fault if the index, data, or bank registers were 8483not defined in the same scope as the field itself. 8484 8485Added printf format string checking for compilers that support 8486this feature. Corrected more than 50 instances of issues with 8487format specifiers within invocations of ACPI_DEBUG_PRINT 8488throughout the core subsystem code. 8489 8490The ASL "Revision" operator now returns the ACPI support level 8491implemented in the core - the value "2" since the ACPI 2.0 support 8492is more than 50% implemented. 8493 8494Enhanced the output of the AML debugger "dump namespace" command 8495to output in a more human-readable form. 8496 8497Current core subsystem library code sizes are shown below. These 8498 8499are the code and data sizes for the acpica.lib produced by the 8500Microsoft Visual C++ 6.0 compiler, and these values do not include 8501any ACPI driver or OSPM code. The debug version of the code 8502includes the full debug trace mechanism -- leading to a much 8503 8504larger code and data size. Note that these values will vary 8505depending on the efficiency of the compiler and the compiler 8506options used during generation. 8507 8508 Previous Label (09_20_01): 8509 Non-Debug Version: 65K Code, 5K Data, 70K Total 8510 Debug Version: 138K Code, 58K Data, 196K Total 8511 8512 This Label: 8513 8514 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 8515 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 8516 8517Linux: 8518 8519Implemented a "Bad BIOS Blacklist" to track machines that have 8520known ASL/AML problems. 8521 8522Enhanced the /proc interface for the thermal zone driver and added 8523support for _HOT (the critical suspend trip point). The 'info' 8524file now includes threshold/policy information, and allows setting 8525of _SCP (cooling preference) and _TZP (polling frequency) values 8526to the 'info' file. Examples: "echo tzp=5 > info" sets the polling 8527frequency to 5 seconds, and "echo scp=1 > info" sets the cooling 8528preference to the passive/quiet mode (if supported by the ASL). 8529 8530Implemented a workaround for a gcc bug that resuted in an OOPs 8531when loading the control method battery driver. 8532 8533 ---------------------------------------- 8534Summary of changes for this label: 09_20_01 8535 8536 ACPI CA Core Subsystem: 8537 8538The AcpiEnableEvent and AcpiDisableEvent interfaces have been 8539modified to allow individual GPE levels to be flagged as wake- 8540enabled (i.e., these GPEs are to remain enabled when the platform 8541sleeps.) 8542 8543The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now 8544support wake-enabled GPEs. This means that upon entering the 8545sleep state, all GPEs that are not wake-enabled are disabled. 8546When leaving the sleep state, these GPEs are reenabled. 8547 8548A local double-precision divide/modulo module has been added to 8549enhance portability to OS kernels where a 64-bit math library is 8550not available. The new module is "utmath.c". 8551 8552Several optimizations have been made to reduce the use of CPU 8553stack. Originally over 2K, the maximum stack usage is now below 85542K at 1860 bytes (1.82k) 8555 8556Fixed a problem with the AcpiGetFirmwareTable interface where the 8557root table pointer was not mapped into a logical address properly. 8558 8559Fixed a problem where a NULL pointer was being dereferenced in the 8560interpreter code for the ASL Notify operator. 8561 8562Fixed a problem where the use of the ASL Revision operator 8563returned an error. This operator now returns the current version 8564of the ACPI CA core subsystem. 8565 8566Fixed a problem where objects passed as control method parameters 8567to AcpiEvaluateObject were always deleted at method termination. 8568However, these objects may end up being stored into the namespace 8569by the called method. The object reference count mechanism was 8570applied to these objects instead of a force delete. 8571 8572Fixed a problem where static strings or buffers (contained in the 8573AML code) that are declared as package elements within the ASL 8574code could cause a fault because the interpreter would attempt to 8575delete them. These objects are now marked with the "static 8576object" flag to prevent any attempt to delete them. 8577 8578Implemented an interpreter optimization to use operands directly 8579from the state object instead of extracting the operands to local 8580variables. This reduces stack use and code size, and improves 8581performance. 8582 8583The module exxface.c was eliminated as it was an unnecessary extra 8584layer of code. 8585 8586Current core subsystem library code sizes are shown below. These 8587are the code and data sizes for the acpica.lib produced by the 8588Microsoft Visual C++ 6.0 compiler, and these values do not include 8589any ACPI driver or OSPM code. The debug version of the code 8590includes the full debug trace mechanism -- leading to a much 8591larger code and data size. Note that these values will vary 8592depending on the efficiency of the compiler and the compiler 8593options used during generation. 8594 8595 Non-Debug Version: 65K Code, 5K Data, 70K Total 8596(Previously 69K) Debug Version: 138K Code, 58K Data, 196K 8597Total (Previously 195K) 8598 8599Linux: 8600 8601Support for ACPI 2.0 64-bit integers has been added. All ACPI 8602Integer objects are now 64 bits wide 8603 8604All Acpi data types and structures are now in lower case. Only 8605Acpi macros are upper case for differentiation. 8606 8607 Documentation: 8608 8609Changes to the external interfaces as described above. 8610 8611 ---------------------------------------- 8612Summary of changes for this label: 08_31_01 8613 8614 ACPI CA Core Subsystem: 8615 8616A bug with interpreter implementation of the ASL Divide operator 8617was found and fixed. The implicit function return value (not the 8618explicit store operands) was returning the remainder instead of 8619the quotient. This was a longstanding bug and it fixes several 8620known outstanding issues on various platforms. 8621 8622The ACPI_DEBUG_PRINT and function trace entry/exit macros have 8623been further optimized for size. There are 700 invocations of the 8624DEBUG_PRINT macro alone, so each optimization reduces the size of 8625the debug version of the subsystem significantly. 8626 8627A stack trace mechanism has been implemented. The maximum stack 8628usage is about 2K on 32-bit platforms. The debugger command "stat 8629stack" will display the current maximum stack usage. 8630 8631All public symbols and global variables within the subsystem are 8632now prefixed with the string "Acpi". This keeps all of the 8633symbols grouped together in a kernel map, and avoids conflicts 8634with other kernel subsystems. 8635 8636Most of the internal fixed lookup tables have been moved into the 8637code segment via the const operator. 8638 8639Several enhancements have been made to the interpreter to both 8640reduce the code size and improve performance. 8641 8642Current core subsystem library code sizes are shown below. These 8643are the code and data sizes for the acpica.lib produced by the 8644Microsoft Visual C++ 6.0 compiler, and these values do not include 8645any ACPI driver or OSPM code. The debug version of the code 8646includes the full debug trace mechanism which contains over 700 8647invocations of the DEBUG_PRINT macro, 500 function entry macro 8648invocations, and over 900 function exit macro invocations -- 8649leading to a much larger code and data size. Note that these 8650values will vary depending on the efficiency of the compiler and 8651the compiler options used during generation. 8652 8653 Non-Debug Version: 64K Code, 5K Data, 69K Total 8654Debug Version: 137K Code, 58K Data, 195K Total 8655 8656 Linux: 8657 8658Implemented wbinvd() macro, pending a kernel-wide definition. 8659 8660Fixed /proc/acpi/event to handle poll() and short reads. 8661 8662 ASL Compiler, version X2026: 8663 8664Fixed a problem introduced in the previous label where the AML 8665 8666code emitted for package objects produced packages with zero 8667length. 8668 8669 ---------------------------------------- 8670Summary of changes for this label: 08_16_01 8671 8672ACPI CA Core Subsystem: 8673 8674The following ACPI 2.0 ASL operators have been implemented in the 8675AML interpreter (These are already supported by the Intel ASL 8676compiler): ToDecimalString, ToHexString, ToString, ToInteger, and 8677ToBuffer. Support for 64-bit AML constants is implemented in the 8678AML parser, debugger, and disassembler. 8679 8680The internal memory tracking mechanism (leak detection code) has 8681been upgraded to reduce the memory overhead (a separate tracking 8682block is no longer allocated for each memory allocation), and now 8683supports all of the internal object caches. 8684 8685The data structures and code for the internal object caches have 8686been coelesced and optimized so that there is a single cache and 8687memory list data structure and a single group of functions that 8688implement generic cache management. This has reduced the code 8689size in both the debug and release versions of the subsystem. 8690 8691The DEBUG_PRINT macro(s) have been optimized for size and replaced 8692by ACPI_DEBUG_PRINT. The syntax for this macro is slightly 8693different, because it generates a single call to an internal 8694function. This results in a savings of about 90 bytes per 8695invocation, resulting in an overall code and data savings of about 869616% in the debug version of the subsystem. 8697 8698 Linux: 8699 8700Fixed C3 disk corruption problems and re-enabled C3 on supporting 8701machines. 8702 8703Integrated low-level sleep code by Patrick Mochel. 8704 8705Further tweaked source code Linuxization. 8706 8707Other minor fixes. 8708 8709 ASL Compiler: 8710 8711Support for ACPI 2.0 variable length packages is fixed/completed. 8712 8713Fixed a problem where the optional length parameter for the ACPI 87142.0 ToString operator. 8715 8716Fixed multiple extraneous error messages when a syntax error is 8717detected within the declaration line of a control method. 8718 8719 ---------------------------------------- 8720Summary of changes for this label: 07_17_01 8721 8722ACPI CA Core Subsystem: 8723 8724Added a new interface named AcpiGetFirmwareTable to obtain any 8725ACPI table via the ACPI signature. The interface can be called at 8726any time during kernel initialization, even before the kernel 8727virtual memory manager is initialized and paging is enabled. This 8728allows kernel subsystems to obtain ACPI tables very early, even 8729before the ACPI CA subsystem is initialized. 8730 8731Fixed a problem where Fields defined with the AnyAcc attribute 8732could be resolved to the incorrect address under the following 8733conditions: 1) the field width is larger than 8 bits and 2) the 8734parent operation region is not defined on a DWORD boundary. 8735 8736Fixed a problem where the interpreter is not being locked during 8737namespace initialization (during execution of the _INI control 8738methods), causing an error when an attempt is made to release it 8739later. 8740 8741ACPI 2.0 support in the AML Interpreter has begun and will be 8742ongoing throughout the rest of this year. In this label, The Mod 8743operator is implemented. 8744 8745Added a new data type to contain full PCI addresses named 8746ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device, 8747and Function values. 8748 8749 Linux: 8750 8751Enhanced the Linux version of the source code to change most 8752capitalized ACPI type names to lowercase. For example, all 8753instances of ACPI_STATUS are changed to acpi_status. This will 8754result in a large diff, but the change is strictly cosmetic and 8755aligns the CA code closer to the Linux coding standard. 8756 8757OSL Interfaces: 8758 8759The interfaces to the PCI configuration space have been changed to 8760add the PCI Segment number and to split the single 32-bit combined 8761DeviceFunction field into two 16-bit fields. This was 8762accomplished by moving the four values that define an address in 8763PCI configuration space (segment, bus, device, and function) to 8764the new ACPI_PCI_ID structure. 8765 8766The changes to the PCI configuration space interfaces led to a 8767reexamination of the complete set of address space access 8768interfaces for PCI, I/O, and Memory. The previously existing 18 8769interfaces have proven difficult to maintain (any small change 8770must be propagated across at least 6 interfaces) and do not easily 8771allow for future expansion to 64 bits if necessary. Also, on some 8772systems, it would not be appropriate to demultiplex the access 8773width (8, 16, 32,or 64) before calling the OSL if the 8774corresponding native OS interfaces contain a similar access width 8775parameter. For these reasons, the 18 address space interfaces 8776have been replaced by these 6 new ones: 8777 8778AcpiOsReadPciConfiguration 8779AcpiOsWritePciConfiguration 8780AcpiOsReadMemory 8781AcpiOsWriteMemory 8782AcpiOsReadPort 8783AcpiOsWritePort 8784 8785Added a new interface named AcpiOsGetRootPointer to allow the OSL 8786to perform the platform and/or OS-specific actions necessary to 8787obtain the ACPI RSDP table pointer. On IA-32 platforms, this 8788interface will simply call down to the CA core to perform the low- 8789memory search for the table. On IA-64, the RSDP is obtained from 8790EFI. Migrating this interface to the OSL allows the CA core to 8791 8792remain OS and platform independent. 8793 8794Added a new interface named AcpiOsSignal to provide a generic 8795"function code and pointer" interface for various miscellaneous 8796signals and notifications that must be made to the host OS. The 8797first such signals are intended to support the ASL Fatal and 8798Breakpoint operators. In the latter case, the AcpiOsBreakpoint 8799interface has been obsoleted. 8800 8801The definition of the AcpiFormatException interface has been 8802changed to simplify its use. The caller no longer must supply a 8803buffer to the call; A pointer to a const string is now returned 8804directly. This allows the call to be easily used in printf 8805statements, etc. since the caller does not have to manage a local 8806buffer. 8807 8808 8809 ASL Compiler, Version X2025: 8810 8811The ACPI 2.0 Switch/Case/Default operators have been implemented 8812and are fully functional. They will work with all ACPI 1.0 8813interpreters, since the operators are simply translated to If/Else 8814pairs. 8815 8816The ACPI 2.0 ElseIf operator is implemented and will also work 8817with 1.0 interpreters, for the same reason. 8818 8819Implemented support for ACPI 2.0 variable-length packages. These 8820packages have a separate opcode, and their size is determined by 8821the interpreter at run-time. 8822 8823Documentation The ACPI CA Programmer Reference has been updated to 8824reflect the new interfaces and changes to existing interfaces. 8825 8826 ------------------------------------------ 8827Summary of changes for this label: 06_15_01 8828 8829 ACPI CA Core Subsystem: 8830 8831Fixed a problem where a DWORD-accessed field within a Buffer 8832object would get its byte address inadvertently rounded down to 8833the nearest DWORD. Buffers are always Byte-accessible. 8834 8835 ASL Compiler, version X2024: 8836 8837Fixed a problem where the Switch() operator would either fault or 8838hang the compiler. Note however, that the AML code for this ACPI 88392.0 operator is not yet implemented. 8840 8841Compiler uses the new AcpiOsGetTimer interface to obtain compile 8842timings. 8843 8844Implementation of the CreateField operator automatically converts 8845a reference to a named field within a resource descriptor from a 8846byte offset to a bit offset if required. 8847 8848Added some missing named fields from the resource descriptor 8849support. These are the names that are automatically created by the 8850compiler to reference fields within a descriptor. They are only 8851valid at compile time and are not passed through to the AML 8852interpreter. 8853 8854Resource descriptor named fields are now typed as Integers and 8855subject to compile-time typechecking when used in expressions. 8856 8857 ------------------------------------------ 8858Summary of changes for this label: 05_18_01 8859 8860 ACPI CA Core Subsystem: 8861 8862Fixed a couple of problems in the Field support code where bits 8863from adjacent fields could be returned along with the proper field 8864bits. Restructured the field support code to improve performance, 8865readability and maintainability. 8866 8867New DEBUG_PRINTP macro automatically inserts the procedure name 8868into the output, saving hundreds of copies of procedure name 8869strings within the source, shrinking the memory footprint of the 8870debug version of the core subsystem. 8871 8872 Source Code Structure: 8873 8874The source code directory tree was restructured to reflect the 8875current organization of the component architecture. Some files 8876and directories have been moved and/or renamed. 8877 8878 Linux: 8879 8880Fixed leaking kacpidpc processes. 8881 8882Fixed queueing event data even when /proc/acpi/event is not 8883opened. 8884 8885 ASL Compiler, version X2020: 8886 8887Memory allocation performance enhancement - over 24X compile time 8888improvement on large ASL files. Parse nodes and namestring 8889buffers are now allocated from a large internal compiler buffer. 8890 8891The temporary .SRC file is deleted unless the "-s" option is 8892specified 8893 8894The "-d" debug output option now sends all output to the .DBG file 8895instead of the console. 8896 8897"External" second parameter is now optional 8898 8899"ElseIf" syntax now properly allows the predicate 8900 8901Last operand to "Load" now recognized as a Target operand 8902 8903Debug object can now be used anywhere as a normal object. 8904 8905ResourceTemplate now returns an object of type BUFFER 8906 8907EISAID now returns an object of type INTEGER 8908 8909"Index" now works with a STRING operand 8910 8911"LoadTable" now accepts optional parameters 8912 8913"ToString" length parameter is now optional 8914 8915"Interrupt (ResourceType," parse error fixed. 8916 8917"Register" with a user-defined region space parse error fixed 8918 8919Escaped backslash at the end of a string ("\\") scan/parse error 8920fixed 8921 8922"Revision" is now an object of type INTEGER. 8923 8924 8925 8926------------------------------------------ 8927Summary of changes for this label: 05_02_01 8928 8929Linux: 8930 8931/proc/acpi/event now blocks properly. 8932 8933Removed /proc/sys/acpi. You can still dump your DSDT from 8934/proc/acpi/dsdt. 8935 8936 ACPI CA Core Subsystem: 8937 8938Fixed a problem introduced in the previous label where some of the 8939"small" resource descriptor types were not recognized. 8940 8941Improved error messages for the case where an ASL Field is outside 8942the range of the parent operation region. 8943 8944 ASL Compiler, version X2018: 8945 8946 8947Added error detection for ASL Fields that extend beyond the length 8948of the parent operation region (only if the length of the region 8949is known at compile time.) This includes fields that have a 8950minimum access width that is smaller than the parent region, and 8951individual field units that are partially or entirely beyond the 8952extent of the parent. 8953 8954 8955 8956------------------------------------------ 8957Summary of changes for this label: 04_27_01 8958 8959 ACPI CA Core Subsystem: 8960 8961Fixed a problem where the namespace mutex could be released at the 8962wrong time during execution of AcpiRemoveAddressSpaceHandler. 8963 8964Added optional thread ID output for debug traces, to simplify 8965debugging of multiple threads. Added context switch notification 8966when the debug code realizes that a different thread is now 8967executing ACPI code. 8968 8969Some additional external data types have been prefixed with the 8970string "ACPI_" for consistency. This may effect existing code. 8971The data types affected are the external callback typedefs - e.g., 8972 8973WALK_CALLBACK becomes ACPI_WALK_CALLBACK. 8974 8975 Linux: 8976 8977Fixed an issue with the OSL semaphore implementation where a 8978thread was waking up with an error from receiving a SIGCHLD 8979signal. 8980 8981Linux version of ACPI CA now uses the system C library for string 8982manipulation routines instead of a local implementation. 8983 8984Cleaned up comments and removed TBDs. 8985 8986 ASL Compiler, version X2017: 8987 8988Enhanced error detection and reporting for all file I/O 8989operations. 8990 8991 Documentation: 8992 8993Programmer Reference updated to version 1.06. 8994 8995 8996 8997------------------------------------------ 8998Summary of changes for this label: 04_13_01 8999 9000 ACPI CA Core Subsystem: 9001 9002Restructured support for BufferFields and RegionFields. 9003BankFields support is now fully operational. All known 32-bit 9004limitations on field sizes have been removed. Both BufferFields 9005and (Operation) RegionFields are now supported by the same field 9006management code. 9007 9008Resource support now supports QWORD address and IO resources. The 900916/32/64 bit address structures and the Extended IRQ structure 9010have been changed to properly handle Source Resource strings. 9011 9012A ThreadId of -1 is now used to indicate a "mutex not acquired" 9013condition internally and must never be returned by AcpiOsThreadId. 9014This reserved value was changed from 0 since Unix systems allow a 9015thread ID of 0. 9016 9017Linux: 9018 9019Driver code reorganized to enhance portability 9020 9021Added a kernel configuration option to control ACPI_DEBUG 9022 9023Fixed the EC driver to honor _GLK. 9024 9025ASL Compiler, version X2016: 9026 9027Fixed support for the "FixedHw" keyword. Previously, the FixedHw 9028address space was set to 0, not 0x7f as it should be. 9029 9030 ------------------------------------------ 9031Summary of changes for this label: 03_13_01 9032 9033 ACPI CA Core Subsystem: 9034 9035During ACPI initialization, the _SB_._INI method is now run if 9036present. 9037 9038Notify handler fix - notifies are deferred until the parent method 9039completes execution. This fixes the "mutex already acquired" 9040issue seen occasionally. 9041 9042Part of the "implicit conversion" rules in ACPI 2.0 have been 9043found to cause compatibility problems with existing ASL/AML. The 9044convert "result-to-target-type" implementation has been removed 9045for stores to method Args and Locals. Source operand conversion 9046is still fully implemented. Possible changes to ACPI 2.0 9047specification pending. 9048 9049Fix to AcpiRsCalculatePciRoutingTableLength to return correct 9050length. 9051 9052Fix for compiler warnings for 64-bit compiles. 9053 9054 Linux: 9055 9056/proc output aligned for easier parsing. 9057 9058Release-version compile problem fixed. 9059 9060New kernel configuration options documented in Configure.help. 9061 9062IBM 600E - Fixed Sleep button may generate "Invalid <NULL> 9063context" message. 9064 9065 OSPM: 9066 9067Power resource driver integrated with bus manager. 9068 9069Fixed kernel fault during active cooling for thermal zones. 9070 9071Source Code: 9072 9073The source code tree has been restructured. 9074 9075 9076 9077------------------------------------------ 9078Summary of changes for this label: 03_02_01 9079 9080 Linux OS Services Layer (OSL): 9081 9082Major revision of all Linux-specific code. 9083 9084Modularized all ACPI-specific drivers. 9085 9086Added new thermal zone and power resource drivers. 9087 9088Revamped /proc interface (new functionality is under /proc/acpi). 9089 9090New kernel configuration options. 9091 9092 Linux known issues: 9093 9094New kernel configuration options not documented in Configure.help 9095yet. 9096 9097 9098Module dependencies not currently implemented. If used, they 9099should be loaded in this order: busmgr, power, ec, system, 9100processor, battery, ac_adapter, button, thermal. 9101 9102Modules will not load if CONFIG_MODVERSION is set. 9103 9104IBM 600E - entering S5 may reboot instead of shutting down. 9105 9106IBM 600E - Sleep button may generate "Invalid <NULL> context" 9107message. 9108 9109Some systems may fail with "execution mutex already acquired" 9110message. 9111 9112 ACPI CA Core Subsystem: 9113 9114Added a new OSL Interface, AcpiOsGetThreadId. This was required 9115for the deadlock detection code. Defined to return a non-zero, 32- 9116bit thread ID for the currently executing thread. May be a non- 9117zero constant integer on single-thread systems. 9118 9119Implemented deadlock detection for internal subsystem mutexes. We 9120may add conditional compilation for this code (debug only) later. 9121 9122ASL/AML Mutex object semantics are now fully supported. This 9123includes multiple acquires/releases by owner and support for the 9124 9125Mutex SyncLevel parameter. 9126 9127A new "Force Release" mechanism automatically frees all ASL 9128Mutexes that have been acquired but not released when a thread 9129exits the interpreter. This forces conformance to the ACPI spec 9130("All mutexes must be released when an invocation exits") and 9131prevents deadlocked ASL threads. This mechanism can be expanded 9132(later) to monitor other resource acquisitions if OEM ASL code 9133continues to misbehave (which it will). 9134 9135Several new ACPI exception codes have been added for the Mutex 9136support. 9137 9138Recursive method calls are now allowed and supported (the ACPI 9139spec does in fact allow recursive method calls.) The number of 9140recursive calls is subject to the restrictions imposed by the 9141SERIALIZED method keyword and SyncLevel (ACPI 2.0) method 9142parameter. 9143 9144Implemented support for the SyncLevel parameter for control 9145methods (ACPI 2.0 feature) 9146 9147Fixed a deadlock problem when multiple threads attempted to use 9148the interpreter. 9149 9150Fixed a problem where the string length of a String package 9151element was not always set in a package returned from 9152AcpiEvaluateObject. 9153 9154Fixed a problem where the length of a String package element was 9155not always included in the length of the overall package returned 9156from AcpiEvaluateObject. 9157 9158Added external interfaces (Acpi*) to the ACPI debug memory 9159manager. This manager keeps a list of all outstanding 9160allocations, and can therefore detect memory leaks and attempts to 9161free memory blocks more than once. Useful for code such as the 9162power manager, etc. May not be appropriate for device drivers. 9163Performance with the debug code enabled is slow. 9164 9165The ACPI Global Lock is now an optional hardware element. 9166 9167 ASL Compiler Version X2015: 9168 9169Integrated changes to allow the compiler to be generated on 9170multiple platforms. 9171 9172Linux makefile added to generate the compiler on Linux 9173 9174 Source Code: 9175 9176All platform-specific headers have been moved to their own 9177subdirectory, Include/Platform. 9178 9179New source file added, Interpreter/ammutex.c 9180 9181New header file, Include/acstruct.h 9182 9183 Documentation: 9184 9185The programmer reference has been updated for the following new 9186interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree 9187 9188 ------------------------------------------ 9189Summary of changes for this label: 02_08_01 9190 9191Core ACPI CA Subsystem: Fixed a problem where an error was 9192incorrectly returned if the return resource buffer was larger than 9193the actual data (in the resource interfaces). 9194 9195References to named objects within packages are resolved to the 9196 9197full pathname string before packages are returned directly (via 9198the AcpiEvaluateObject interface) or indirectly via the resource 9199interfaces. 9200 9201Linux OS Services Layer (OSL): 9202 9203Improved /proc battery interface. 9204 9205 9206Added C-state debugging output and other miscellaneous fixes. 9207 9208ASL Compiler Version X2014: 9209 9210All defined method arguments can now be used as local variables, 9211including the ones that are not actually passed in as parameters. 9212The compiler tracks initialization of the arguments and issues an 9213exception if they are used without prior assignment (just like 9214locals). 9215 9216The -o option now specifies a filename prefix that is used for all 9217output files, including the AML output file. Otherwise, the 9218default behavior is as follows: 1) the AML goes to the file 9219specified in the DSDT. 2) all other output files use the input 9220source filename as the base. 9221 9222 ------------------------------------------ 9223Summary of changes for this label: 01_25_01 9224 9225Core ACPI CA Subsystem: Restructured the implementation of object 9226store support within the interpreter. This includes support for 9227the Store operator as well as any ASL operators that include a 9228target operand. 9229 9230Partially implemented support for Implicit Result-to-Target 9231conversion. This is when a result object is converted on the fly 9232to the type of an existing target object. Completion of this 9233support is pending further analysis of the ACPI specification 9234concerning this matter. 9235 9236CPU-specific code has been removed from the subsystem (hardware 9237directory). 9238 9239New Power Management Timer functions added 9240 9241Linux OS Services Layer (OSL): Moved system state transition code 9242to the core, fixed it, and modified Linux OSL accordingly. 9243 9244Fixed C2 and C3 latency calculations. 9245 9246 9247We no longer use the compilation date for the version message on 9248initialization, but retrieve the version from AcpiGetSystemInfo(). 9249 9250Incorporated for fix Sony VAIO machines. 9251 9252Documentation: The Programmer Reference has been updated and 9253reformatted. 9254 9255 9256ASL Compiler: Version X2013: Fixed a problem where the line 9257numbering and error reporting could get out of sync in the 9258presence of multiple include files. 9259 9260 ------------------------------------------ 9261Summary of changes for this label: 01_15_01 9262 9263Core ACPI CA Subsystem: 9264 9265Implemented support for type conversions in the execution of the 9266ASL Concatenate operator (The second operand is converted to 9267match the type of the first operand before concatenation.) 9268 9269Support for implicit source operand conversion is partially 9270implemented. The ASL source operand types Integer, Buffer, and 9271String are freely interchangeable for most ASL operators and are 9272converted by the interpreter on the fly as required. Implicit 9273Target operand conversion (where the result is converted to the 9274target type before storing) is not yet implemented. 9275 9276Support for 32-bit and 64-bit BCD integers is implemented. 9277 9278Problem fixed where a field read on an aligned field could cause a 9279read past the end of the field. 9280 9281New exception, AE_AML_NO_RETURN_VALUE, is returned when a method 9282does not return a value, but the caller expects one. (The ASL 9283compiler flags this as a warning.) 9284 9285ASL Compiler: 9286 9287Version X2011: 92881. Static typechecking of all operands is implemented. This 9289prevents the use of invalid objects (such as using a Package where 9290an Integer is required) at compile time instead of at interpreter 9291run-time. 92922. The ASL source line is printed with ALL errors and warnings. 92933. Bug fix for source EOF without final linefeed. 92944. Debug option is split into a parse trace and a namespace trace. 92955. Namespace output option (-n) includes initial values for 9296integers and strings. 92976. Parse-only option added for quick syntax checking. 92987. Compiler checks for duplicate ACPI name declarations 9299 9300Version X2012: 93011. Relaxed typechecking to allow interchangeability between 9302strings, integers, and buffers. These types are now converted by 9303the interpreter at runtime. 93042. Compiler reports time taken by each internal subsystem in the 9305debug output file. 9306 9307 9308 ------------------------------------------ 9309Summary of changes for this label: 12_14_00 9310 9311ASL Compiler: 9312 9313This is the first official release of the compiler. Since the 9314compiler requires elements of the Core Subsystem, this label 9315synchronizes everything. 9316 9317------------------------------------------ 9318Summary of changes for this label: 12_08_00 9319 9320 9321Fixed a problem where named references within the ASL definition 9322of both OperationRegions and CreateXXXFields did not work 9323properly. The symptom was an AE_AML_OPERAND_TYPE during 9324initialization of the region/field. This is similar (but not 9325related internally) to the problem that was fixed in the last 9326label. 9327 9328Implemented both 32-bit and 64-bit support for the BCD ASL 9329functions ToBCD and FromBCD. 9330 9331Updated all legal headers to include "2000" in the copyright 9332years. 9333 9334 ------------------------------------------ 9335Summary of changes for this label: 12_01_00 9336 9337Fixed a problem where method invocations within the ASL definition 9338of both OperationRegions and CreateXXXFields did not work 9339properly. The symptom was an AE_AML_OPERAND_TYPE during 9340initialization of the region/field: 9341 9342 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments 9343[DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s) 9344(0x3005) 9345 9346Fixed a problem where operators with more than one nested 9347subexpression would fail. The symptoms were varied, by mostly 9348AE_AML_OPERAND_TYPE errors. This was actually a rather serious 9349problem that has gone unnoticed until now. 9350 9351 Subtract (Add (1,2), Multiply (3,4)) 9352 9353Fixed a problem where AcpiGetHandle didn't quite get fixed in the 9354previous build (The prefix part of a relative path was handled 9355incorrectly). 9356 9357Fixed a problem where Operation Region initialization failed if 9358the operation region name was a "namepath" instead of a simple 9359"nameseg". Symptom was an AE_NO_OPERAND error. 9360 9361Fixed a problem where an assignment to a local variable via the 9362indirect RefOf mechanism only worked for the first such 9363assignment. Subsequent assignments were ignored. 9364 9365 ------------------------------------------ 9366Summary of changes for this label: 11_15_00 9367 9368ACPI 2.0 table support with backwards support for ACPI 1.0 and the 93690.71 extensions. Note: although we can read ACPI 2.0 BIOS tables, 9370the AML interpreter does NOT have support for the new 2.0 ASL 9371grammar terms at this time. 9372 9373All ACPI hardware access is via the GAS structures in the ACPI 2.0 9374FADT. 9375 9376All physical memory addresses across all platforms are now 64 bits 9377wide. Logical address width remains dependent on the platform 9378(i.e., "void *"). 9379 9380AcpiOsMapMemory interface changed to a 64-bit physical address. 9381 9382The AML interpreter integer size is now 64 bits, as per the ACPI 93832.0 specification. 9384 9385For backwards compatibility with ACPI 1.0, ACPI tables with a 9386revision number less than 2 use 32-bit integers only. 9387 9388Fixed a problem where the evaluation of OpRegion operands did not 9389always resolve them to numbers properly. 9390 9391------------------------------------------ 9392Summary of changes for this label: 10_20_00 9393 9394Fix for CBN_._STA issue. This fix will allow correct access to 9395CBN_ OpRegions when the _STA returns 0x8. 9396 9397Support to convert ACPI constants (Ones, Zeros, One) to actual 9398values before a package object is returned 9399 9400Fix for method call as predicate to if/while construct causing 9401incorrect if/while behavior 9402 9403Fix for Else block package lengths sometimes calculated wrong (if 9404block > 63 bytes) 9405 9406Fix for Processor object length field, was always zero 9407 9408Table load abort if FACP sanity check fails 9409 9410Fix for problem with Scope(name) if name already exists 9411 9412Warning emitted if a named object referenced cannot be found 9413(resolved) during method execution. 9414 9415 9416 9417 9418 9419------------------------------------------ 9420Summary of changes for this label: 9_29_00 9421 9422New table initialization interfaces: AcpiInitializeSubsystem no 9423longer has any parameters AcpiFindRootPointer - Find the RSDP (if 9424necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP- 9425>RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by 9426AcpiLoadTables 9427 9428Note: These interface changes require changes to all existing OSDs 9429 9430The PCI_Config default address space handler is always installed 9431at the root namespace object. 9432 9433------------------------------------------- 9434Summary of changes for this label: 09_15_00 9435 9436The new initialization architecture is implemented. New 9437interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize) 9438AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace 9439 9440(Namespace is automatically loaded when a table is loaded) 9441 9442The ACPI_OPERAND_OBJECT has been optimized to shrink its size from 944352 bytes to 32 bytes. There is usually one of these for every 9444namespace object, so the memory savings is significant. 9445 9446Implemented just-in-time evaluation of the CreateField operators. 9447 9448Bug fixes for IA-64 support have been integrated. 9449 9450Additional code review comments have been implemented 9451 9452The so-called "third pass parse" has been replaced by a final walk 9453through the namespace to initialize all operation regions (address 9454spaces) and fields that have not yet been initialized during the 9455execution of the various _INI and REG methods. 9456 9457New file - namespace/nsinit.c 9458 9459------------------------------------------- 9460Summary of changes for this label: 09_01_00 9461 9462Namespace manager data structures have been reworked to change the 9463primary object from a table to a single object. This has 9464resulted in dynamic memory savings of 3X within the namespace and 94652X overall in the ACPI CA subsystem. 9466 9467Fixed problem where the call to AcpiEvFindPciRootBuses was 9468inadvertently left commented out. 9469 9470Reduced the warning count when generating the source with the GCC 9471compiler. 9472 9473Revision numbers added to each module header showing the 9474SourceSafe version of the file. Please refer to this version 9475number when giving us feedback or comments on individual modules. 9476 9477The main object types within the subsystem have been renamed to 9478clarify their purpose: 9479 9480ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT 9481ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT 9482ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE 9483 9484NOTE: no changes to the initialization sequence are included in 9485this label. 9486 9487------------------------------------------- 9488Summary of changes for this label: 08_23_00 9489 9490Fixed problem where TerminateControlMethod was being called 9491multiple times per method 9492 9493Fixed debugger problem where single stepping caused a semaphore to 9494be oversignalled 9495 9496Improved performance through additional parse object caching - 9497added ACPI_EXTENDED_OP type 9498 9499------------------------------------------- 9500Summary of changes for this label: 08_10_00 9501 9502Parser/Interpreter integration: Eliminated the creation of 9503complete parse trees for ACPI tables and control methods. 9504Instead, parse subtrees are created and then deleted as soon as 9505they are processed (Either entered into the namespace or executed 9506by the interpreter). This reduces the use of dynamic kernel 9507memory significantly. (about 10X) 9508 9509Exception codes broken into classes and renumbered. Be sure to 9510recompile all code that includes acexcep.h. Hopefully we won't 9511have to renumber the codes again now that they are split into 9512classes (environment, programmer, AML code, ACPI table, and 9513internal). 9514 9515Fixed some additional alignment issues in the Resource Manager 9516subcomponent 9517 9518Implemented semaphore tracking in the AcpiExec utility, and fixed 9519several places where mutexes/semaphores were being unlocked 9520without a corresponding lock operation. There are no known 9521semaphore or mutex "leaks" at this time. 9522 9523Fixed the case where an ASL Return operator is used to return an 9524unnamed package. 9525 9526------------------------------------------- 9527Summary of changes for this label: 07_28_00 9528 9529Fixed a problem with the way addresses were calculated in 9530AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem 9531manifested itself when a Field was created with WordAccess or 9532DwordAccess, but the field unit defined within the Field was less 9533 9534than a Word or Dword. 9535 9536Fixed a problem in AmlDumpOperands() module's loop to pull 9537operands off of the operand stack to display information. The 9538problem manifested itself as a TLB error on 64-bit systems when 9539accessing an operand stack with two or more operands. 9540 9541Fixed a problem with the PCI configuration space handlers where 9542context was getting confused between accesses. This required a 9543change to the generic address space handler and address space 9544setup definitions. Handlers now get both a global handler context 9545(this is the one passed in by the user when executing 9546AcpiInstallAddressSpaceHandler() and a specific region context 9547that is unique to each region (For example, the _ADR, _SEG and 9548_BBN values associated with a specific region). The generic 9549function definitions have changed to the following: 9550 9551typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function, 9552UINT32 Address, UINT32 BitWidth, UINT32 *Value, void 9553*HandlerContext, // This used to be void *Context void 9554*RegionContext); // This is an additional parameter 9555 9556typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE 9557RegionHandle, UINT32 Function, void *HandlerContext, void 9558**RegionContext); // This used to be **ReturnContext 9559 9560------------------------------------------- 9561Summary of changes for this label: 07_21_00 9562 9563Major file consolidation and rename. All files within the 9564interpreter have been renamed as well as most header files. This 9565was done to prevent collisions with existing files in the host 9566OSs -- filenames such as "config.h" and "global.h" seem to be 9567quite common. The VC project files have been updated. All 9568makefiles will require modification. 9569 9570The parser/interpreter integration continues in Phase 5 with the 9571implementation of a complete 2-pass parse (the AML is parsed 9572twice) for each table; This avoids the construction of a huge 9573parse tree and therefore reduces the amount of dynamic memory 9574required by the subsystem. Greater use of the parse object cache 9575means that performance is unaffected. 9576 9577Many comments from the two code reviews have been rolled in. 9578 9579The 64-bit alignment support is complete. 9580 9581------------------------------------------- 9582Summary of changes for this label: 06_30_00 9583 9584With a nod and a tip of the hat to the technology of yesteryear, 9585we've added support in the source code for 80 column output 9586devices. The code is now mostly constrained to 80 columns or 9587less to support environments and editors that 1) cannot display 9588or print more than 80 characters on a single line, and 2) cannot 9589disable line wrapping. 9590 9591A major restructuring of the namespace data structure has been 9592completed. The result is 1) cleaner and more 9593understandable/maintainable code, and 2) a significant reduction 9594in the dynamic memory requirement for each named ACPI object 9595(almost half). 9596 9597------------------------------------------- 9598Summary of changes for this label: 06_23_00 9599 9600Linux support has been added. In order to obtain approval to get 9601the ACPI CA subsystem into the Linux kernel, we've had to make 9602quite a few changes to the base subsystem that will affect all 9603users (all the changes are generic and OS- independent). The 9604effects of these global changes have been somewhat far reaching. 9605Files have been merged and/or renamed and interfaces have been 9606renamed. The major changes are described below. 9607 9608Osd* interfaces renamed to AcpiOs* to eliminate namespace 9609pollution/confusion within our target kernels. All OSD 9610interfaces must be modified to match the new naming convention. 9611 9612Files merged across the subsystem. A number of the smaller source 9613and header files have been merged to reduce the file count and 9614increase the density of the existing files. There are too many 9615to list here. In general, makefiles that call out individual 9616files will require rebuilding. 9617 9618Interpreter files renamed. All interpreter files now have the 9619prefix am* instead of ie* and is*. 9620 9621Header files renamed: The acapi.h file is now acpixf.h. The 9622acpiosd.h file is now acpiosxf.h. We are removing references to 9623the acronym "API" since it is somewhat windowsy. The new name is 9624"external interface" or xface or xf in the filenames.j 9625 9626 9627All manifest constants have been forced to upper case (some were 9628mixed case.) Also, the string "ACPI_" has been prepended to many 9629(not all) of the constants, typedefs, and structs. 9630 9631The globals "DebugLevel" and "DebugLayer" have been renamed 9632"AcpiDbgLevel" and "AcpiDbgLayer" respectively. 9633 9634All other globals within the subsystem are now prefixed with 9635"AcpiGbl_" Internal procedures within the subsystem are now 9636prefixed with "Acpi" (with only a few exceptions). The original 9637two-letter abbreviation for the subcomponent remains after "Acpi" 9638- for example, CmCallocate became AcpiCmCallocate. 9639 9640Added a source code translation/conversion utility. Used to 9641generate the Linux source code, it can be modified to generate 9642other types of source as well. Can also be used to cleanup 9643existing source by removing extraneous spaces and blank lines. 9644Found in tools/acpisrc/* 9645 9646OsdUnMapMemory was renamed to OsdUnmapMemory and then 9647AcpiOsUnmapMemory. (UnMap became Unmap). 9648 9649A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore. 9650When set to one, this indicates that the caller wants to use the 9651 9652semaphore as a mutex, not a counting semaphore. ACPI CA uses 9653both types. However, implementers of this call may want to use 9654different OS primitives depending on the type of semaphore 9655requested. For example, some operating systems provide separate 9656 9657"mutex" and "semaphore" interfaces - where the mutex interface is 9658much faster because it doesn't have all the overhead of a full 9659semaphore implementation. 9660 9661Fixed a deadlock problem where a method that accesses the PCI 9662address space can block forever if it is the first access to the 9663space. 9664 9665------------------------------------------- 9666Summary of changes for this label: 06_02_00 9667 9668Support for environments that cannot handle unaligned data 9669accesses (e.g. firmware and OS environments devoid of alignment 9670handler technology namely SAL/EFI and the IA-64 Linux kernel) has 9671been added (via configurable macros) in these three areas: - 9672Transfer of data from the raw AML byte stream is done via byte 9673moves instead of word/dword/qword moves. - External objects are 9674aligned within the user buffer, including package elements (sub- 9675objects). - Conversion of name strings to UINT32 Acpi Names is now 9676done byte-wise. 9677 9678The Store operator was modified to mimic Microsoft's 9679implementation when storing to a Buffer Field. 9680 9681Added a check of the BM_STS bit before entering C3. 9682 9683The methods subdirectory has been obsoleted and removed. A new 9684file, cmeval.c subsumes the functionality. 9685 9686A 16-bit (DOS) version of AcpiExec has been developed. The 9687makefile is under the acpiexec directory. 9688