changes.txt revision 198237
1---------------------------------------- 213 October 2009. Summary of changes for version 20091013: 3 4This release is available at www.acpica.org/downloads 5 61) ACPI CA Core Subsystem: 7 8Fixed a problem where an Operation Region _REG method could be executed more 9than once. If a custom address space handler is installed by the host before 10the "initialize operation regions" phase of the ACPICA initialization, any 11_REG methods for that address space could be executed twice. This change 12fixes the problem. ACPICA BZ 427. Lin Ming. 13 14Fixed a possible memory leak for the Scope() ASL operator. When the exact 15invocation of "Scope(\)" is executed (change scope to root), one internal 16operand object was leaked. Lin Ming. 17 18Implemented a run-time repair for the _MAT predefined method. If the _MAT 19return value is defined as a Field object in the AML, and the field 20size is less than or equal to the default width of an integer (32 or 64),_MAT 21can incorrectly return an Integer instead of a Buffer. ACPICA now 22automatically repairs this problem. ACPICA BZ 810. 23 24Implemented a run-time repair for the _BIF and _BIX predefined methods. The 25"OEM Information" field is often incorrectly returned as an Integer with 26value zero if the field is not supported by the platform. This is due to an 27ambiguity in the ACPI specification. The field should always be a string. 28ACPICA now automatically repairs this problem by returning a NULL string 29within the returned Package. ACPICA BZ 807. 30 31Example Code and Data Size: These are the sizes for the OS-independent 32acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 33debug version of the code includes the debug output trace mechanism and has a 34much larger code and data size. 35 36 Previous Release: 37 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 38 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 39 Current Release: 40 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 41 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 42 432) iASL Compiler/Disassembler and Tools: 44 45Disassembler: Fixed a problem where references to external symbols that 46contained one or more parent-prefixes (carats) were not handled correctly, 47possibly causing a fault. ACPICA BZ 806. Lin Ming. 48 49Disassembler: Restructured the code so that all functions that handle 50external symbols are in a single module. One new file is added, 51common/dmextern.c. 52 53AML Debugger: Added a max count argument for the Batch command (which 54executes multiple predefined methods within the namespace.) 55 56iASL: Updated the compiler documentation (User Reference.) Available at 57http://www.acpica.org/documentation/. ACPICA BZ 750. 58 59AcpiXtract: Updated for Lint and other formatting changes. Close all open 60files. 61 62---------------------------------------- 6303 September 2009. Summary of changes for version 20090903: 64 651) ACPI CA Core Subsystem: 66 67For Windows Vista compatibility, added the automatic execution of an _INI 68method located at the namespace root (\_INI). This method is executed at 69table load time. This support is in addition to the automatic execution of 70\_SB._INI. Lin Ming. 71 72Fixed a possible memory leak in the interpreter for AML package objects if 73the package initializer list is longer than the defined size of the package. 74This apparently can only happen if the BIOS changes the package size on the 75fly (seen in a _PSS object), as ASL compilers do not allow this. The 76interpreter will truncate the package to the defined size (and issue an error 77message), but previously could leave the extra objects undeleted if they were 78pre-created during the argument processing (such is the case if the package 79consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805. 80 81Fixed a problem seen when a Buffer or String is stored to itself via ASL. 82This has been reported in the field. Previously, ACPICA would zero out the 83buffer/string. Now, the operation is treated as a noop. Provides Windows 84compatibility. ACPICA BZ 803. Lin Ming. 85 86Removed an extraneous error message for ASL constructs of the form 87Store(LocalX,LocalX) when LocalX is uninitialized. These curious statements 88are seen in many BIOSs and are once again treated as NOOPs and no error is 89emitted when they are encountered. ACPICA BZ 785. 90 91Fixed an extraneous warning message if a _DSM reserved method returns a 92Package object. _DSM can return any type of object, so validation on the 93return type cannot be performed. ACPICA BZ 802. 94 95Example Code and Data Size: These are the sizes for the OS-independent 96acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 97debug version of the code includes the debug output trace mechanism and has a 98much larger code and data size. 99 100 Previous Release: 101 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 102 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 103 Current Release: 104 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 105 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 106 1072) iASL Compiler/Disassembler and Tools: 108 109iASL: Fixed a problem with the use of the Alias operator and Resource 110Templates. The correct alias is now constructed and no error is emitted. 111ACPICA BZ 738. 112 113iASL: Implemented the -I option to specify additional search directories for 114include files. Allows multiple additional search paths for include files. 115Directories are searched in the order specified on the command line (after 116the local directory is searched.) ACPICA BZ 800. 117 118iASL: Fixed a problem where the full pathname for include files was not 119emitted for warnings/errors. This caused the IDE support to not work 120properly. ACPICA BZ 765. 121 122iASL: Implemented the -@ option to specify a Windows-style response file 123containing additional command line options. ACPICA BZ 801. 124 125AcpiExec: Added support to load multiple AML files simultaneously (such as a 126DSDT and multiple SSDTs). Also added support for wildcards within the AML 127pathname. These features allow all machine tables to be easily loaded and 128debugged together. ACPICA BZ 804. 129 130Disassembler: Added missing support for disassembly of HEST table Error Bank 131subtables. 132 133---------------------------------------- 13430 July 2009. Summary of changes for version 20090730: 135 136The ACPI 4.0 implementation for ACPICA is complete with this release. 137 1381) ACPI CA Core Subsystem: 139 140ACPI 4.0: Added header file support for all new and changed ACPI tables. 141Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are new 142for ACPI 4.0, but have previously been supported in ACPICA are: CPEP, BERT, 143EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT. There 144have been some ACPI 4.0 changes to other existing tables. Split the large 145actbl1.h header into the existing actbl2.h header. ACPICA BZ 774. 146 147ACPI 4.0: Implemented predefined name validation for all new names. There are 14831 new names in ACPI 4.0. The predefined validation module was split into two 149files. The new file is namespace/nsrepair.c. ACPICA BZ 770. 150 151Implemented support for so-called "module-level executable code". This is 152executable AML code that exists outside of any control method and is intended 153to be executed at table load time. Although illegal since ACPI 2.0, this type 154of code still exists and is apparently still being created. Blocks of this 155code are now detected and executed as intended. Currently, the code blocks 156must exist under either an If, Else, or While construct; these are the 157typical cases seen in the field. ACPICA BZ 762. Lin Ming. 158 159Implemented an automatic dynamic repair for predefined names that return 160nested Package objects. This applies to predefined names that are defined to 161return a variable-length Package of sub-packages. If the number of sub- 162packages is one, BIOS code is occasionally seen that creates a simple single 163package with no sub-packages. This code attempts to fix the problem by 164wrapping a new package object around the existing package. These methods can 165be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA BZ 166790. 167 168Fixed a regression introduced in 20090625 for the AcpiGetDevices interface. 169The _HID/_CID matching was broken and no longer matched IDs correctly. ACPICA 170BZ 793. 171 172Fixed a problem with AcpiReset where the reset would silently fail if the 173register was one of the protected I/O ports. AcpiReset now bypasses the port 174validation mechanism. This may eventually be driven into the AcpiRead/Write 175interfaces. 176 177Fixed a regression related to the recent update of the AcpiRead/Write 178interfaces. A sleep/suspend could fail if the optional PM2 Control register 179does not exist during an attempt to write the Bus Master Arbitration bit. 180(However, some hosts already delete the code that writes this bit, and the 181code may in fact be obsolete at this date.) ACPICA BZ 799. 182 183Fixed a problem where AcpiTerminate could fault if inadvertently called twice 184in succession. ACPICA BZ 795. 185 186Example Code and Data Size: These are the sizes for the OS-independent 187acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 188debug version of the code includes the debug output trace mechanism and has a 189much larger code and data size. 190 191 Previous Release: 192 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 193 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 194 Current Release: 195 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 196 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 197 1982) iASL Compiler/Disassembler and Tools: 199 200ACPI 4.0: Implemented disassembler support for all new ACPI tables and 201changes to existing tables. ACPICA BZ 775. 202 203---------------------------------------- 20425 June 2009. Summary of changes for version 20090625: 205 206The ACPI 4.0 Specification was released on June 16 and is available at 207www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will 208continue for the next few releases. 209 2101) ACPI CA Core Subsystem: 211 212ACPI 4.0: Implemented interpreter support for the IPMI operation region 213address space. Includes support for bi-directional data buffers and an IPMI 214address space handler (to be installed by an IPMI device driver.) ACPICA BZ 215773. Lin Ming. 216 217ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. Includes 218support in both the header files and the disassembler. 219 220Completed a major update for the AcpiGetObjectInfo external interface. 221Changes include: 222 - Support for variable, unlimited length HID, UID, and CID strings. 223 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, etc.) 224 - Call the _SxW power methods on behalf of a device object. 225 - Determine if a device is a PCI root bridge. 226 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO. 227These changes will require an update to all callers of this interface. See 228the updated ACPICA Programmer Reference for details. One new source file has 229been added - utilities/utids.c. ACPICA BZ 368, 780. 230 231Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit 232transfers. The Value parameter has been extended from 32 bits to 64 bits in 233order to support new ACPI 4.0 tables. These changes will require an update to 234all callers of these interfaces. See the ACPICA Programmer Reference for 235details. ACPICA BZ 768. 236 237Fixed several problems with AcpiAttachData. The handler was not invoked when 238the host node was deleted. The data sub-object was not automatically deleted 239when the host node was deleted. The interface to the handler had an unused 240parameter, this was removed. ACPICA BZ 778. 241 242Enhanced the function that dumps ACPI table headers. All non-printable 243characters in the string fields are now replaced with '?' (Signature, OemId, 244OemTableId, and CompilerId.) ACPI tables with non-printable characters in 245these fields are occasionally seen in the field. ACPICA BZ 788. 246 247Fixed a problem with predefined method repair code where the code that 248attempts to repair/convert an object of incorrect type is only executed on 249the first time the predefined method is called. The mechanism that disables 250warnings on subsequent calls was interfering with the repair mechanism. 251ACPICA BZ 781. 252 253Fixed a possible memory leak in the predefined validation/repair code when a 254buffer is automatically converted to an expected string object. 255 256Removed obsolete 16-bit files from the distribution and from the current git 257tree head. ACPICA BZ 776. 258 259Example Code and Data Size: These are the sizes for the OS-independent 260acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 261debug version of the code includes the debug output trace mechanism and has a 262much larger code and data size. 263 264 Previous Release: 265 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 266 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 267 Current Release: 268 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 269 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 270 2712) iASL Compiler/Disassembler and Tools: 272 273ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI 274operation region keyword. ACPICA BZ 771, 772. Lin Ming. 275 276ACPI 4.0: iASL - implemented compile-time validation support for all new 277predefined names and control methods (31 total). ACPICA BZ 769. 278 279---------------------------------------- 28021 May 2009. Summary of changes for version 20090521: 281 2821) ACPI CA Core Subsystem: 283 284Disabled the preservation of the SCI enable bit in the PM1 control register. 285The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification to be 286a "preserved" bit - "OSPM always preserves this bit position", section 2874.7.3.2.1. However, some machines fail if this bit is in fact preserved 288because the bit needs to be explicitly set by the OS as a workaround. No 289machines fail if the bit is not preserved. Therefore, ACPICA no longer 290attempts to preserve this bit. 291 292Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or 293incorrectly formed _PRT package could cause a fault. Added validation to 294ensure that each package element is actually a sub-package. 295 296Implemented a new interface to install or override a single control method, 297AcpiInstallMethod. This interface is useful when debugging in order to repair 298an existing method or to install a missing method without having to override 299the entire ACPI table. See the ACPICA Programmer Reference for use and 300examples. Lin Ming, Bob Moore. 301 302Fixed several reference count issues with the DdbHandle object that is 303created from a Load or LoadTable operator. Prevent premature deletion of the 304object. Also, mark the object as invalid once the table has been unloaded. 305This is needed because the handle itself may not be deleted after the table 306unload, depending on whether it has been stored in a named object by the 307caller. Lin Ming. 308 309Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple 310mutexes of the same sync level are acquired but then not released in strict 311opposite order, the internally maintained Current Sync Level becomes confused 312and can cause subsequent execution errors. ACPICA BZ 471. 313 314Changed the allowable release order for ASL mutex objects. The ACPI 4.0 315specification has been changed to make the SyncLevel for mutex objects more 316useful. When releasing a mutex, the SyncLevel of the mutex must now be the 317same as the current sync level. This makes more sense than the previous rule 318(SyncLevel less than or equal). This change updates the code to match the 319specification. 320 321Fixed a problem with the local version of the AcpiOsPurgeCache function. The 322(local) cache must be locked during all cache object deletions. Andrew 323Baumann. 324 325Updated the Load operator to use operation region interfaces. This replaces 326direct memory mapping with region access calls. Now, all region accesses go 327through the installed region handler as they should. 328 329Simplified and optimized the NsGetNextNode function. Reduced parameter count 330and reduced code for this frequently used function. 331 332Example Code and Data Size: These are the sizes for the OS-independent 333acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 334debug version of the code includes the debug output trace mechanism and has a 335much larger code and data size. 336 337 Previous Release: 338 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 339 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 340 Current Release: 341 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 342 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 343 3442) iASL Compiler/Disassembler and Tools: 345 346Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some problems 347with sub-table disassembly and handling invalid sub-tables. Attempt recovery 348after an invalid sub-table ID. 349 350---------------------------------------- 35122 April 2009. Summary of changes for version 20090422: 352 3531) ACPI CA Core Subsystem: 354 355Fixed a compatibility issue with the recently released I/O port protection 356mechanism. For windows compatibility, 1) On a port protection violation, 357simply ignore the request and do not return an exception (allow the control 358method to continue execution.) 2) If only part of the request overlaps a 359protected port, read/write the individual ports that are not protected. Linux 360BZ 13036. Lin Ming 361 362Enhanced the execution of the ASL/AML BreakPoint operator so that it actually 363breaks into the AML debugger if the debugger is present. This matches the 364ACPI-defined behavior. 365 366Fixed several possible warnings related to the use of the configurable 367ACPI_THREAD_ID. This type can now be configured as either an integer or a 368pointer with no warnings. Also fixes several warnings in printf-like 369statements for the 64-bit build when the type is configured as a pointer. 370ACPICA BZ 766, 767. 371 372Fixed a number of possible warnings when compiling with gcc 4+ (depending on 373warning options.) Examples include printf formats, aliasing, unused globals, 374missing prototypes, missing switch default statements, use of non-ANSI 375library functions, use of non-ANSI constructs. See generate/unix/Makefile for 376a list of warning options used with gcc 3 and 4. ACPICA BZ 735. 377 378Example Code and Data Size: These are the sizes for the OS-independent 379acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 380debug version of the code includes the debug output trace mechanism and has a 381much larger code and data size. 382 383 Previous Release: 384 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 385 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 386 Current Release: 387 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 388 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 389 3902) iASL Compiler/Disassembler and Tools: 391 392iASL: Fixed a generation warning from Bison 2.3 and fixed several warnings on 393the 64-bit build. 394 395iASL: Fixed a problem where the Unix/Linux versions of the compiler could not 396correctly digest Windows/DOS formatted files (with CR/LF). 397 398iASL: Added a new option for "quiet mode" (-va) that produces only the 399compilation summary, not individual errors and warnings. Useful for large 400batch compilations. 401 402AcpiExec: Implemented a new option (-z) to enable a forced semaphore/mutex 403timeout that can be used to detect hang conditions during execution of AML 404code (includes both internal semaphores and AML-defined mutexes and events.) 405 406Added new makefiles for the generation of acpica in a generic unix-like 407environment. These makefiles are intended to generate the acpica tools and 408utilities from the original acpica git source tree structure. 409 410Test Suites: Updated and cleaned up the documentation files. Updated the 411copyrights to 2009, affecting all source files. Use the new version of iASL 412with quiet mode. Increased the number of available semaphores in the Windows 413OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, added 414an alternate implementation of the semaphore timeout to allow aslts to 415execute fully on Cygwin. 416 417---------------------------------------- 41820 March 2009. Summary of changes for version 20090320: 419 4201) ACPI CA Core Subsystem: 421 422Fixed a possible race condition between AcpiWalkNamespace and dynamic table 423unloads. Added a reader/writer locking mechanism to allow multiple concurrent 424namespace walks (readers), but block a dynamic table unload until it can gain 425exclusive write access to the namespace. This fixes a problem where a table 426unload could (possibly catastrophically) delete the portion of the namespace 427that is currently being examined by a walk. Adds a new file, utlock.c, that 428implements the reader/writer lock mechanism. ACPICA BZ 749. 429 430Fixed a regression introduced in version 20090220 where a change to the FADT 431handling could cause the ACPICA subsystem to access non-existent I/O ports. 432 433Modified the handling of FADT register and table (FACS/DSDT) addresses. The 434FADT can contain both 32-bit and 64-bit versions of these addresses. 435Previously, the 64-bit versions were favored, meaning that if both 32 and 64 436versions were valid, but not equal, the 64-bit version was used. This was 437found to cause some machines to fail. Now, in this case, the 32-bit version 438is used instead. This now matches the Windows behavior. 439 440Implemented a new mechanism to protect certain I/O ports. Provides Microsoft 441compatibility and protects the standard PC I/O ports from access via AML 442code. Adds a new file, hwvalid.c 443 444Fixed a possible extraneous warning message from the FADT support. The 445message warns of a 32/64 length mismatch between the legacy and GAS 446definitions for a register. 447 448Removed the obsolete AcpiOsValidateAddress OSL interface. This interface is 449made obsolete by the port protection mechanism above. It was previously used 450to validate the entire address range of an operation region, which could be 451incorrect if the range included illegal ports, but fields within the 452operation region did not actually access those ports. Validation is now 453performed on a per-field basis instead of the entire region. 454 455Modified the handling of the PM1 Status Register ignored bit (bit 11.) 456Ignored bits must be "preserved" according to the ACPI spec. Usually, this 457means a read/modify/write when writing to the register. However, for status 458registers, writing a one means clear the event. Writing a zero means preserve 459the event (do not clear.) This behavior is clarified in the ACPI 4.0 spec, 460and the ACPICA code now simply always writes a zero to the ignored bit. 461 462Modified the handling of ignored bits for the PM1 A/B Control Registers. As 463per the ACPI specification, for the control registers, preserve 464(read/modify/write) all bits that are defined as either reserved or ignored. 465 466Updated the handling of write-only bits in the PM1 A/B Control Registers. 467When reading the register, zero the write-only bits as per the ACPI spec. 468ACPICA BZ 443. Lin Ming. 469 470Removed "Linux" from the list of supported _OSI strings. Linux no longer 471wants to reply true to this request. The Windows strings are the only paths 472through the AML that are tested and known to work properly. 473 474 Previous Release: 475 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 476 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 477 Current Release: 478 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 479 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 480 4812) iASL Compiler/Disassembler and Tools: 482 483Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c and 484aetables.c 485 486---------------------------------------- 48720 February 2009. Summary of changes for version 20090220: 488 4891) ACPI CA Core Subsystem: 490 491Optimized the ACPI register locking. Removed locking for reads from the ACPI 492bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock is 493not required when reading the single-bit registers. The 494AcpiGetRegisterUnlocked function is no longer needed and has been removed. 495This will improve performance for reads on these registers. ACPICA BZ 760. 496 497Fixed the parameter validation for AcpiRead/Write. Now return 498AE_BAD_PARAMETER if the input register pointer is null, and AE_BAD_ADDRESS if 499the register has an address of zero. Previously, these cases simply returned 500AE_OK. For optional registers such as PM1B status/enable/control, the caller 501should check for a valid register address before calling. ACPICA BZ 748. 502 503Renamed the external ACPI bit register access functions. Renamed 504AcpiGetRegister and AcpiSetRegister to clarify the purpose of these 505functions. The new names are AcpiReadBitRegister and AcpiWriteBitRegister. 506Also, restructured the code for these functions by simplifying the code path 507and condensing duplicate code to reduce code size. 508 509Added new functions to transparently handle the possibly split PM1 A/B 510registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two functions 511now handle the split registers for PM1 Status, Enable, and Control. ACPICA BZ 512746. 513 514Added a function to handle the PM1 control registers, AcpiHwWritePm1Control. 515This function writes both of the PM1 control registers (A/B). These registers 516are different than the PM1 A/B status and enable registers in that different 517values can be written to the A/B registers. Most notably, the SLP_TYP bits 518can be different, as per the values returned from the _Sx predefined methods. 519 520Removed an extra register write within AcpiHwClearAcpiStatus. This function 521was writing an optional PM1B status register twice. The existing call to the 522low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 A/B 523register. ACPICA BZ 751. 524 525Split out the PM1 Status registers from the FADT. Added new globals for these 526registers (A/B), similar to the way the PM1 Enable registers are handled. 527Instead of overloading the FADT Event Register blocks. This makes the code 528clearer and less prone to error. 529 530Fixed the warning message for when the platform contains too many ACPI tables 531for the default size of the global root table data structure. The calculation 532for the truncation value was incorrect. 533 534Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this 535obsolete macro, since it is now a simple reference to ->common.type. There 536were about 150 invocations of the macro across 41 files. ACPICA BZ 755. 537 538Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as 539TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to 540simply SLEEP_TYPE. ACPICA BZ 754. 541 542Conditionally compile the AcpiSetFirmwareWakingVector64 function. This 543function is only needed on 64-bit host operating systems and is thus not 544included for 32-bit hosts. 545 546Debug output: print the input and result for invocations of the _OSI reserved 547control method via the ACPI_LV_INFO debug level. Also, reduced some of the 548verbosity of this debug level. Len Brown. 549 550Example Code and Data Size: These are the sizes for the OS-independent 551acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 552debug version of the code includes the debug output trace mechanism and has a 553much larger code and data size. 554 555 Previous Release: 556 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 557 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 558 Current Release: 559 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 560 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 561 5622) iASL Compiler/Disassembler and Tools: 563 564Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the 565various legal performance profiles. 566 567---------------------------------------- 56823 January 2009. Summary of changes for version 20090123: 569 5701) ACPI CA Core Subsystem: 571 572Added the 2009 copyright to all module headers and signons. This affects 573virtually every file in the ACPICA core subsystem, the iASL compiler, and 574the tools/utilities. 575 576Implemented a change to allow the host to override any ACPI table, including 577dynamically loaded tables. Previously, only the DSDT could be replaced by the 578host. With this change, the AcpiOsTableOverride interface is called for each 579table found in the RSDT/XSDT during ACPICA initialization, and also whenever 580a table is dynamically loaded via the AML Load operator. 581 582Updated FADT flag definitions, especially the Boot Architecture flags. 583 584Debugger: For the Find command, automatically pad the input ACPI name with 585underscores if the name is shorter than 4 characters. This enables a match 586with the actual namespace entry which is itself padded with underscores. 587 588Example Code and Data Size: These are the sizes for the OS-independent 589acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 590debug version of the code includes the debug output trace mechanism and has a 591much larger code and data size. 592 593 Previous Release: 594 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 595 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 596 Current Release: 597 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 598 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 599 6002) iASL Compiler/Disassembler and Tools: 601 602Fix build error under Bison-2.4. 603 604Dissasembler: Enhanced FADT support. Added decoding of the Boot Architecture 605flags. Now decode all flags, regardless of the FADT version. Flag output 606includes the FADT version which first defined each flag. 607 608The iASL -g option now dumps the RSDT to a file (in addition to the FADT and 609DSDT). Windows only. 610 611---------------------------------------- 61204 December 2008. Summary of changes for version 20081204: 613 6141) ACPI CA Core Subsystem: 615 616The ACPICA Programmer Reference has been completely updated and revamped for 617this release. This includes updates to the external interfaces, OSL 618interfaces, the overview sections, and the debugger reference. 619 620Several new ACPICA interfaces have been implemented and documented in the 621programmer reference: 622AcpiReset - Writes the reset value to the FADT-defined reset register. 623AcpiDisableAllGpes - Disable all available GPEs. 624AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs. 625AcpiGetGpeDevice - Get the GPE block device associated with a GPE. 626AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs. 627AcpiRead - Low-level read ACPI register (was HwLowLevelRead.) 628AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.) 629 630Most of the public ACPI hardware-related interfaces have been moved to a new 631file, components/hardware/hwxface.c 632 633Enhanced the FADT parsing and low-level ACPI register access: The ACPI 634register lengths within the FADT are now used, and the low level ACPI 635register access no longer hardcodes the ACPI register lengths. Given that 636there may be some risk in actually trusting the FADT register lengths, a run- 637time option was added to fall back to the default hardcoded lengths if the 638FADT proves to contain incorrect values - UseDefaultRegisterWidths. This 639option is set to true for now, and a warning is issued if a suspicious FADT 640register length is overridden with the default value. 641 642Fixed a reference count issue in NsRepairObject. This problem was introduced 643in version 20081031 as part of a fix to repair Buffer objects within 644Packages. Lin Ming. 645 646Added semaphore support to the Linux/Unix application OS-services layer 647(OSL). ACPICA BZ 448. Lin Ming. 648 649Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes will 650be implemented in the OSL, or will binary semaphores be used instead. 651 652Example Code and Data Size: These are the sizes for the OS-independent 653acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 654debug version of the code includes the debug output trace mechanism and has a 655much larger code and data size. 656 657 Previous Release: 658 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 659 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 660 Current Release: 661 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 662 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 663 6642) iASL Compiler/Disassembler and Tools: 665 666iASL: Completed the '-e' option to include additional ACPI tables in order to 667aid with disassembly and External statement generation. ACPICA BZ 742. Lin 668Ming. 669 670iASL: Removed the "named object in while loop" error. The compiler cannot 671determine how many times a loop will execute. ACPICA BZ 730. 672 673Disassembler: Implemented support for FADT revision 2 (MS extension). ACPICA 674BZ 743. 675 676Disassembler: Updates for several ACPI data tables (HEST, EINJ, and MCFG). 677 678---------------------------------------- 67931 October 2008. Summary of changes for version 20081031: 680 6811) ACPI CA Core Subsystem: 682 683Restructured the ACPICA header files into public/private. acpi.h now includes 684only the "public" acpica headers. All other acpica headers are "private" and 685should not be included by acpica users. One new file, accommon.h is used to 686include the commonly used private headers for acpica code generation. Future 687plans include moving all private headers to a new subdirectory. 688 689Implemented an automatic Buffer->String return value conversion for 690predefined ACPI methods. For these methods (such as _BIF), added automatic 691conversion for return objects that are required to be a String, but a Buffer 692was found instead. This can happen when reading string battery data from an 693operation region, because it used to be difficult to convert the data from 694buffer to string from within the ASL. Ensures that the host OS is provided 695with a valid null-terminated string. Linux BZ 11822. 696 697Updated the FACS waking vector interfaces. Split AcpiSetFirmwareWakingVector 698into two: one for the 32-bit vector, another for the 64-bit vector. This is 699required because the host OS must setup the wake much differently for each 700vector (real vs. protected mode, etc.) and the interface itself should not be 701deciding which vector to use. Also, eliminated the GetFirmwareWakingVector 702interface, as it served no purpose (only the firmware reads the vector, OS 703only writes the vector.) ACPICA BZ 731. 704 705Implemented a mechanism to escape infinite AML While() loops. Added a loop 706counter to force exit from AML While loops if the count becomes too large. 707This can occur in poorly written AML when the hardware does not respond 708within a while loop and the loop does not implement a timeout. The maximum 709loop count is configurable. A new exception code is returned when a loop is 710broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore. 711 712Optimized the execution of AML While loops. Previously, a control state 713object was allocated and freed for each execution of the loop. The 714optimization is to simply reuse the control state for each iteration. This 715speeds up the raw loop execution time by about 5%. 716 717Enhanced the implicit return mechanism. For Windows compatibility, return an 718implicit integer of value zero for methods that contain no executable code. 719Such methods are seen in the field as stubs (presumably), and can cause 720drivers to fail if they expect a return value. Lin Ming. 721 722Allow multiple backslashes as root prefixes in namepaths. In a fully 723qualified namepath, allow multiple backslash prefixes. This can happen (and 724is seen in the field) because of the use of a double-backslash in strings 725(since backslash is the escape character) causing confusion. ACPICA BZ 739 726Lin Ming. 727 728Emit a warning if two different FACS or DSDT tables are discovered in the 729FADT. Checks if there are two valid but different addresses for the FACS and 730DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.) 731 732Consolidated the method argument count validation code. Merged the code that 733validates control method argument counts into the predefined validation 734module. Eliminates possible multiple warnings for incorrect argument counts. 735 736Implemented ACPICA example code. Includes code for ACPICA initialization, 737handler installation, and calling a control method. Available at 738source/tools/examples. 739 740Added a global pointer for FACS table to simplify internal FACS access. Use 741the global pointer instead of using AcpiGetTableByIndex for each FACS access. 742This simplifies the code for the Global Lock and the Firmware Waking 743Vector(s). 744 745Example Code and Data Size: These are the sizes for the OS-independent 746acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 747debug version of the code includes the debug output trace mechanism and has a 748much larger code and data size. 749 750 Previous Release: 751 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 752 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 753 Current Release: 754 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 755 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 756 7572) iASL Compiler/Disassembler and Tools: 758 759iASL: Improved disassembly of external method calls. Added the -e option to 760allow the inclusion of additional ACPI tables to help with the disassembly of 761method invocations and the generation of external declarations during the 762disassembly. Certain external method invocations cannot be disassembled 763properly without the actual declaration of the method. Use the -e option to 764include the table where the external method(s) are actually declared. Most 765useful for disassembling SSDTs that make method calls back to the master 766DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl -d 767-e dsdt.aml ssdt1.aml 768 769iASL: Fix to allow references to aliases within ASL namepaths. Fixes a 770problem where the use of an alias within a namepath would result in a not 771found error or cause the compiler to fault. Also now allows forward 772references from the Alias operator itself. ACPICA BZ 738. 773 774---------------------------------------- 77526 September 2008. Summary of changes for version 20080926: 776 7771) ACPI CA Core Subsystem: 778 779Designed and implemented a mechanism to validate predefined ACPI methods and 780objects. This code validates the predefined ACPI objects (objects whose names 781start with underscore) that appear in the namespace, at the time they are 782evaluated. The argument count and the type of the returned object are 783validated against the ACPI specification. The purpose of this validation is 784to detect problems with the BIOS-implemented predefined ACPI objects before 785the results are returned to the ACPI-related drivers. Future enhancements may 786include actual repair of incorrect return objects where possible. Two new 787files are nspredef.c and acpredef.h. 788 789Fixed a fault in the AML parser if a memory allocation fails during the Op 790completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492. 791 792Fixed an issue with implicit return compatibility. This change improves the 793implicit return mechanism to be more compatible with the MS interpreter. Lin 794Ming, ACPICA BZ 349. 795 796Implemented support for zero-length buffer-to-string conversions. Allow zero 797length strings during interpreter buffer-to-string conversions. For example, 798during the ToDecimalString and ToHexString operators, as well as implicit 799conversions. Fiodor Suietov, ACPICA BZ 585. 800 801Fixed two possible memory leaks in the error exit paths of 802AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions are 803similar in that they use a stack of state objects in order to eliminate 804recursion. The stack must be fully unwound and deallocated if an error 805occurs. Lin Ming. ACPICA BZ 383. 806 807Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the global 808ACPI register table. This bit does not exist and is unused. Lin Ming, Bob 809Moore ACPICA BZ 442. 810 811Removed the obsolete version number in module headers. Removed the 812"$Revision" number that appeared in each module header. This version number 813was useful under SourceSafe and CVS, but has no meaning under git. It is not 814only incorrect, it could also be misleading. 815 816Example Code and Data Size: These are the sizes for the OS-independent 817acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 818debug version of the code includes the debug output trace mechanism and has a 819much larger code and data size. 820 821 Previous Release: 822 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 823 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 824 Current Release: 825 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 826 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 827 828---------------------------------------- 82929 August 2008. Summary of changes for version 20080829: 830 8311) ACPI CA Core Subsystem: 832 833Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type 834Reference. Changes include the elimination of cheating on the Object field 835for the DdbHandle subtype, addition of a reference class field to 836differentiate the various reference types (instead of an AML opcode), and the 837cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723 838 839Reduce an error to a warning for an incorrect method argument count. 840Previously aborted with an error if too few arguments were passed to a 841control method via the external ACPICA interface. Now issue a warning instead 842and continue. Handles the case where the method inadvertently declares too 843many arguments, but does not actually use the extra ones. Applies mainly to 844the predefined methods. Lin Ming. Linux BZ 11032. 845 846Disallow the evaluation of named object types with no intrinsic value. Return 847AE_TYPE for objects that have no value and therefore evaluation is undefined: 848Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation of 849these types were allowed, but an exception would be generated at some point 850during the evaluation. Now, the error is generated up front. 851 852Fixed a possible memory leak in the AcpiNsGetExternalPathname function 853(nsnames.c). Fixes a leak in the error exit path. 854 855Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These debug 856levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and ACPI_EXCEPTION 857interfaces. Also added ACPI_DB_EVENTS to correspond with the existing 858ACPI_LV_EVENTS. 859 860Removed obsolete and/or unused exception codes from the acexcep.h header. 861There is the possibility that certain device drivers may be affected if they 862use any of these exceptions. 863 864The ACPICA documentation has been added to the public git source tree, under 865acpica/documents. Included are the ACPICA programmer reference, the iASL 866compiler reference, and the changes.txt release logfile. 867 868Example Code and Data Size: These are the sizes for the OS-independent 869acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 870debug version of the code includes the debug output trace mechanism and has a 871much larger code and data size. 872 873 Previous Release: 874 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 875 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 876 Current Release: 877 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 878 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 879 8802) iASL Compiler/Disassembler and Tools: 881 882Allow multiple argument counts for the predefined _SCP method. ACPI 3.0 883defines _SCP with 3 arguments. Previous versions defined it with only 1 884argument. iASL now allows both definitions. 885 886iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for zero- 887length subtables when disassembling ACPI tables. Also fixed a couple of 888errors where a full 16-bit table type field was not extracted from the input 889properly. 890 891acpisrc: Improve comment counting mechanism for generating source code 892statistics. Count first and last lines of multi-line comments as whitespace, 893not comment lines. Handle Linux legal header in addition to standard acpica 894header. 895 896---------------------------------------- 897 89829 July 2008. Summary of changes for version 20080729: 899 900This release is available at http://acpica.org/downloads 901Direct git access via http://www.acpica.org/repos/acpica.git 902 9031) ACPI CA Core Subsystem: 904 905Fix a possible deadlock in the GPE dispatch. Remove call to 906AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will attempt 907to acquire the GPE lock but can deadlock since the GPE lock is already held 908at dispatch time. This code was introduced in version 20060831 as a response 909to Linux BZ 6881 and has since been removed from Linux. 910 911Add a function to dereference returned reference objects. Examines the return 912object from a call to AcpiEvaluateObject. Any Index or RefOf references are 913automatically dereferenced in an attempt to return something useful (these 914reference types cannot be converted into an external ACPI_OBJECT.) Provides 915MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105 916 917x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new 918subtables for the MADT and one new subtable for the SRAT. Includes 919disassembler and AcpiSrc support. Data from the Intel 64 Architecture x2APIC 920Specification, June 2008. 921 922Additional error checking for pathname utilities. Add error check after all 923calls to AcpiNsGetPathnameLength. Add status return from 924AcpiNsBuildExternalPath and check after all calls. Add parameter validation 925to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar. 926 927Return status from the global init function AcpiUtGlobalInitialize. This is 928used by both the kernel subsystem and the utilities such as iASL compiler. 929The function could possibly fail when the caches are initialized. Yang Yi. 930 931Add a function to decode reference object types to strings. Created for 932improved error messages. 933 934Improve object conversion error messages. Better error messages during object 935conversion from internal to the external ACPI_OBJECT. Used for external calls 936to AcpiEvaluateObject. 937 938Example Code and Data Size: These are the sizes for the OS-independent 939acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 940debug version of the code includes the debug output trace mechanism and has a 941much larger code and data size. 942 943 Previous Release: 944 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 945 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 946 Current Release: 947 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 948 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 949 9502) iASL Compiler/Disassembler and Tools: 951 952Debugger: fix a possible hang when evaluating non-methods. Fixes a problem 953introduced in version 20080701. If the object being evaluated (via execute 954command) is not a method, the debugger can hang while trying to obtain non- 955existent parameters. 956 957iASL: relax error for using reserved "_T_x" identifiers. These names can 958appear in a disassembled ASL file if they were emitted by the original 959compiler. Instead of issuing an error or warning and forcing the user to 960manually change these names, issue a remark instead. 961 962iASL: error if named object created in while loop. Emit an error if any named 963object is created within a While loop. If allowed, this code will generate a 964run-time error on the second iteration of the loop when an attempt is made to 965create the same named object twice. ACPICA bugzilla 730. 966 967iASL: Support absolute pathnames for include files. Add support for absolute 968pathnames within the Include operator. previously, only relative pathnames 969were supported. 970 971iASL: Enforce minimum 1 interrupt in interrupt macro and Resource Descriptor. 972The ACPI spec requires one interrupt minimum. BZ 423 973 974iASL: Handle a missing ResourceSource arg, with a present SourceIndex. 975Handles the case for the Interrupt Resource Descriptor where 976the ResourceSource argument is omitted but ResourceSourceIndex 977is present. Now leave room for the Index. BZ 426 978 979iASL: Prevent error message if CondRefOf target does not exist. Fixes cases 980where an error message is emitted if the target does not exist. BZ 516 981 982iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option 983(get ACPI tables on Windows). This was apparently broken in version 20070919. 984 985AcpiXtract: Handle EOF while extracting data. Correctly handle the case where 986the EOF happens immediately after the last table in the input file. Print 987completion message. Previously, no message was displayed in this case. 988 989---------------------------------------- 99001 July 2008. Summary of changes for version 20080701: 991 992This release is available at http://acpica.org/downloads 993Direct git access via http://www.acpica.org/repos/acpica.git 994 9950) Git source tree / acpica.org 996 997Fixed a problem where a git-clone from http would not transfer the entire 998source tree. 999 10001) ACPI CA Core Subsystem: 1001 1002Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one 1003enable bit. Now performs a read-change-write of the enable register instead 1004of simply writing out the cached enable mask. This will prevent inadvertent 1005enabling of GPEs if a rogue GPE is received during initialization (before GPE 1006handlers are installed.) 1007 1008Implemented a copy for dynamically loaded tables. Previously, dynamically 1009loaded tables were simply mapped - but on some machines this memory is 1010corrupted after suspend. Now copy the table to a local buffer. For the 1011OpRegion case, added checksum verify. Use the table length from the table 1012header, not the region length. For the Buffer case, use the table length 1013also. Dennis Noordsij, Bob Moore. BZ 10734 1014 1015Fixed a problem where the same ACPI table could not be dynamically loaded and 1016unloaded more than once. Without this change, a table cannot be loaded again 1017once it has been loaded/unloaded one time. The current mechanism does not 1018unregister a table upon an unload. During a load, if the same table is found, 1019this no longer returns an exception. BZ 722 1020 1021Fixed a problem where the wrong descriptor length was calculated for the 1022EndTag descriptor in 64-bit mode. The "minimal" descriptors such as EndTag 1023are calculated as 12 bytes long, but the actual length in the internal 1024descriptor is 16 because of the round-up to 8 on the 64-bit build. Reported 1025by Linn Crosetto. BZ 728 1026 1027Fixed a possible memory leak in the Unload operator. The DdbHandle returned 1028by Load() did not have its reference count decremented during unload, leading 1029to a memory leak. Lin Ming. BZ 727 1030 1031Fixed a possible memory leak when deleting thermal/processor objects. Any 1032associated notify handlers (and objects) were not being deleted. Fiodor 1033Suietov. BZ 506 1034 1035Fixed the ordering of the ASCII names in the global mutex table to match the 1036actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug only. 1037Vegard Nossum. BZ 726 1038 1039Enhanced the AcpiGetObjectInfo interface to return the number of required 1040arguments if the object is a control method. Added this call to the debugger 1041so the proper number of default arguments are passed to a method. This 1042prevents a warning when executing methods from AcpiExec. 1043 1044Added a check for an invalid handle in AcpiGetObjectInfo. Return 1045AE_BAD_PARAMETER if input handle is invalid. BZ 474 1046 1047Fixed an extraneous warning from exconfig.c on the 64-bit build. 1048 1049Example Code and Data Size: These are the sizes for the OS-independent 1050acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1051debug version of the code includes the debug output trace mechanism and has a 1052much larger code and data size. 1053 1054 Previous Release: 1055 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 1056 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 1057 Current Release: 1058 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 1059 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 1060 10612) iASL Compiler/Disassembler and Tools: 1062 1063iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both 1064resource descriptor names. 1065 1066iASL: Detect invalid ASCII characters in input (windows version). Removed the 1067"-CF" flag from the flex compile, enables correct detection of non-ASCII 1068characters in the input. BZ 441 1069 1070iASL: Eliminate warning when result of LoadTable is not used. Eliminate the 1071"result of operation not used" warning when the DDB handle returned from 1072LoadTable is not used. The warning is not needed. BZ 590 1073 1074AcpiExec: Add support for dynamic table load/unload. Now calls _CFG method to 1075pass address of table to the AML. Added option to disable OpRegion simulation 1076to allow creation of an OpRegion with a real address that was passed to _CFG. 1077All of this allows testing of the Load and Unload operators from AcpiExec. 1078 1079Debugger: update tables command for unloaded tables. Handle unloaded tables 1080and use the standard table header output routine. 1081 1082---------------------------------------- 108309 June 2008. Summary of changes for version 20080609: 1084 10851) ACPI CA Core Subsystem: 1086 1087Implemented a workaround for reversed _PRT entries. A significant number of 1088BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This 1089change dynamically detects and repairs this problem. Provides compatibility 1090with MS ACPI. BZ 6859 1091 1092Simplified the internal ACPI hardware interfaces to eliminate the locking 1093flag parameter from Register Read/Write. Added a new external interface, 1094AcpiGetRegisterUnlocked. 1095 1096Fixed a problem where the invocation of a GPE control method could hang. This 1097was a regression introduced in 20080514. The new method argument count 1098validation mechanism can enter an infinite loop when a GPE method is 1099dispatched. Problem fixed by removing the obsolete code that passed GPE block 1100information to the notify handler via the control method parameter pointer. 1101 1102Fixed a problem where the _SST execution status was incorrectly returned to 1103the caller of AcpiEnterSleepStatePrep. This was a regression introduced in 110420080514. _SST is optional and a NOT_FOUND exception should never be 1105returned. BZ 716 1106 1107Fixed a problem where a deleted object could be accessed from within the AML 1108parser. This was a regression introduced in version 20080123 as a fix for the 1109Unload operator. Lin Ming. BZ 10669 1110 1111Cleaned up the debug operand dump mechanism. Eliminated unnecessary operands 1112and eliminated the use of a negative index in a loop. Operands are now 1113displayed in the correct order, not backwards. This also fixes a regression 1114introduced in 20080514 on 64-bit systems where the elimination of 1115ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 715 1116 1117Fixed a possible memory leak in EvPciConfigRegionSetup where the error exit 1118path did not delete a locally allocated structure. 1119 1120Updated definitions for the DMAR and SRAT tables to synchronize with the 1121current specifications. Includes disassembler support. 1122 1123Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect 1124loop termination value was used. Loop terminated on iteration early, missing 1125one mutex. Linn Crosetto 1126 1127Example Code and Data Size: These are the sizes for the OS-independent 1128acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1129debug version of the code includes the debug output trace mechanism and has a 1130much larger code and data size. 1131 1132 Previous Release: 1133 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 1134 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 1135 Current Release: 1136 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 1137 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 1138 11392) iASL Compiler/Disassembler and Tools: 1140 1141Disassembler: Implemented support for EisaId() within _CID objects. Now 1142disassemble integer _CID objects back to EisaId invocations, including 1143multiple integers within _CID packages. Includes single-step support for 1144debugger also. 1145 1146Disassembler: Added support for DMAR and SRAT table definition changes. 1147 1148---------------------------------------- 114914 May 2008. Summary of changes for version 20080514: 1150 11511) ACPI CA Core Subsystem: 1152 1153Fixed a problem where GPEs were enabled too early during the ACPICA 1154initialization. This could lead to "handler not installed" errors on some 1155machines. Moved GPE enable until after _REG/_STA/_INI methods are run. This 1156ensures that all operation regions and devices throughout the namespace have 1157been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916. 1158 1159Implemented a change to the enter sleep code. Moved execution of the _GTS 1160method to just before setting sleep enable bit. The execution was moved from 1161AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed 1162immediately before the SLP_EN bit is set, as per the ACPI specification. 1163Luming Yu, BZ 1653. 1164 1165Implemented a fix to disable unknown GPEs (2nd version). Now always disable 1166the GPE, even if ACPICA thinks that that it is already disabled. It is 1167possible that the AML or some other code has enabled the GPE unbeknownst to 1168the ACPICA code. 1169 1170Fixed a problem with the Field operator where zero-length fields would return 1171an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length ASL 1172field declarations in Field(), BankField(), and IndexField(). BZ 10606. 1173 1174Implemented a fix for the Load operator, now load the table at the namespace 1175root. This reverts a change introduced in version 20071019. The table is now 1176loaded at the namespace root even though this goes against the ACPI 1177specification. This provides compatibility with other ACPI implementations. 1178The ACPI specification will be updated to reflect this in ACPI 4.0. Lin Ming. 1179 1180Fixed a problem where ACPICA would not Load() tables with unusual signatures. 1181Now ignore ACPI table signature for Load() operator. Only "SSDT" is 1182acceptable to the ACPI spec, but tables are seen with OEMx and null sigs. 1183Therefore, signature validation is worthless. Apparently MS ACPI accepts such 1184signatures, ACPICA must be compatible. BZ 10454. 1185 1186Fixed a possible negative array index in AcpiUtValidateException. Added NULL 1187fields to the exception string arrays to eliminate a -1 subtraction on the 1188SubStatus field. 1189 1190Updated the debug tracking macros to reduce overall code and data size. 1191Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings 1192instead of pointers to static strings. Jan Beulich and Bob Moore. 1193 1194Implemented argument count checking in control method invocation via 1195AcpiEvaluateObject. Now emit an error if too few arguments, warning if too 1196many. This applies only to extern programmatic control method execution, not 1197method-to-method calls within the AML. Lin Ming. 1198 1199Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is no 1200longer needed, especially with the removal of 16-bit support. It was replaced 1201mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 bit on 120232/64-bit platforms is required. 1203 1204Added the C const qualifier for appropriate string constants -- mostly 1205MODULE_NAME and printf format strings. Jan Beulich. 1206 1207Example Code and Data Size: These are the sizes for the OS-independent 1208acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1209debug version of the code includes the debug output trace mechanism and has a 1210much larger code and data size. 1211 1212 Previous Release: 1213 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 1214 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 1215 Current Release: 1216 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 1217 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 1218 12192) iASL Compiler/Disassembler and Tools: 1220 1221Implemented ACPI table revision ID validation in the disassembler. Zero is 1222always invalid. For DSDTs, the ID controls the interpreter integer width. 1 1223means 32-bit and this is unusual. 2 or greater is 64-bit. 1224 1225---------------------------------------- 122621 March 2008. Summary of changes for version 20080321: 1227 12281) ACPI CA Core Subsystem: 1229 1230Implemented an additional change to the GPE support in order to suppress 1231spurious or stray GPEs. The AcpiEvDisableGpe function will now permanently 1232disable incoming GPEs that are neither enabled nor disabled -- meaning that 1233the GPE is unknown to the system. This should prevent future interrupt floods 1234from that GPE. BZ 6217 (Zhang Rui) 1235 1236Fixed a problem where NULL package elements were not returned to the 1237AcpiEvaluateObject interface correctly. The element was simply ignored 1238instead of returning a NULL ACPI_OBJECT package element, potentially causing 1239a buffer overflow and/or confusing the caller who expected a fixed number of 1240elements. BZ 10132 (Lin Ming, Bob Moore) 1241 1242Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word, Dword, 1243Qword), Field, BankField, and IndexField operators when invoked from inside 1244an executing control method. In this case, these operators created namespace 1245nodes that were incorrectly left marked as permanent nodes instead of 1246temporary nodes. This could cause a problem if there is race condition 1247between an exiting control method and a running namespace walk. (Reported by 1248Linn Crosetto) 1249 1250Fixed a problem where the CreateField and CreateXXXField operators would 1251incorrectly allow duplicate names (the name of the field) with no exception 1252generated. 1253 1254Implemented several changes for Notify handling. Added support for new Notify 1255values (ACPI 2.0+) and improved the Notify debug output. Notify on 1256PowerResource objects is no longer allowed, as per the ACPI specification. 1257(Bob Moore, Zhang Rui) 1258 1259All Reference Objects returned via the AcpiEvaluateObject interface are now 1260marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved for 1261NULL objects - either NULL package elements or unresolved named references. 1262 1263Fixed a problem where an extraneous debug message was produced for package 1264objects (when debugging enabled). The message "Package List length larger 1265than NumElements count" is now produced in the correct case, and is now an 1266error message rather than a debug message. Added a debug message for the 1267opposite case, where NumElements is larger than the Package List (the package 1268will be padded out with NULL elements as per the ACPI spec.) 1269 1270Implemented several improvements for the output of the ASL "Debug" object to 1271clarify and keep all data for a given object on one output line. 1272 1273Fixed two size calculation issues with the variable-length Start Dependent 1274resource descriptor. 1275 1276Example Code and Data Size: These are the sizes for the OS-independent 1277acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1278debug version of the code includes the debug output trace mechanism and has 1279a much larger code and data size. 1280 1281 Previous Release: 1282 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 1283 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 1284 Current Release: 1285 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 1286 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 1287 12882) iASL Compiler/Disassembler and Tools: 1289 1290Fixed a problem with the use of the Switch operator where execution of the 1291containing method by multiple concurrent threads could cause an 1292AE_ALREADY_EXISTS exception. This is caused by the fact that there is no 1293actual Switch opcode, it must be simulated with local named temporary 1294variables and if/else pairs. The solution chosen was to mark any method that 1295uses Switch as Serialized, thus preventing multiple thread entries. BZ 469. 1296 1297---------------------------------------- 129813 February 2008. Summary of changes for version 20080213: 1299 13001) ACPI CA Core Subsystem: 1301 1302Implemented another MS compatibility design change for GPE/Notify handling. 1303GPEs are now cleared/enabled asynchronously to allow all pending notifies to 1304complete first. It is expected that the OSL will queue the enable request 1305behind all pending notify requests (may require changes to the local host OSL 1306in AcpiOsExecute). Alexey Starikovskiy. 1307 1308Fixed a problem where buffer and package objects passed as arguments to a 1309control method via the external AcpiEvaluateObject interface could cause an 1310AE_AML_INTERNAL exception depending on the order and type of operators 1311executed by the target control method. 1312 1313Fixed a problem where resource descriptor size optimization could cause a 1314problem when a _CRS resource template is passed to a _SRS method. The _SRS 1315resource template must use the same descriptors (with the same size) as 1316returned from _CRS. This change affects the following resource descriptors: 1317IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 9487) 1318 1319Fixed a problem where a CopyObject to RegionField, BankField, and IndexField 1320objects did not perform an implicit conversion as it should. These types must 1321retain their initial type permanently as per the ACPI specification. However, 1322a CopyObject to all other object types should not perform an implicit 1323conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388 1324 1325Fixed a problem with the AcpiGetDevices interface where the mechanism to 1326match device CIDs did not examine the entire list of available CIDs, but 1327instead aborted on the first non-matching CID. Andrew Patterson. 1328 1329Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro was 1330inadvertently changed to return a 16-bit value instead of a 32-bit value, 1331truncating the upper dword of a 64-bit value. This macro is only used to 1332display debug output, so no incorrect calculations were made. Also, 1333reimplemented the macro so that a 64-bit shift is not performed by 1334inefficient compilers. 1335 1336Added missing va_end statements that should correspond with each va_start 1337statement. 1338 1339Example Code and Data Size: These are the sizes for the OS-independent 1340acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1341debug version of the code includes the debug output trace mechanism and has 1342a much larger code and data size. 1343 1344 Previous Release: 1345 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 1346 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 1347 Current Release: 1348 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 1349 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 1350 13512) iASL Compiler/Disassembler and Tools: 1352 1353Implemented full disassembler support for the following new ACPI tables: 1354BERT, EINJ, and ERST. Implemented partial disassembler support for the 1355complicated HEST table. These tables support the Windows Hardware Error 1356Architecture (WHEA). 1357 1358---------------------------------------- 135923 January 2008. Summary of changes for version 20080123: 1360 13611) ACPI CA Core Subsystem: 1362 1363Added the 2008 copyright to all module headers and signons. This affects 1364virtually every file in the ACPICA core subsystem, the iASL compiler, and 1365the tools/utilities. 1366 1367Fixed a problem with the SizeOf operator when used with Package and Buffer 1368objects. These objects have deferred execution for some arguments, and the 1369execution is now completed before the SizeOf is executed. This problem caused 1370unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) BZ 13719558 1372 1373Implemented an enhancement to the interpreter "slack mode". In the absence of 1374an explicit return or an implicitly returned object from the last executed 1375opcode, a control method will now implicitly return an integer of value 0 for 1376Microsoft compatibility. (Lin Ming) BZ 392 1377 1378Fixed a problem with the Load operator where an exception was not returned in 1379the case where the table is already loaded. (Lin Ming) BZ 463 1380 1381Implemented support for the use of DDBHandles as an Indexed Reference, as per 1382the ACPI spec. (Lin Ming) BZ 486 1383 1384Implemented support for UserTerm (Method invocation) for the Unload operator 1385as per the ACPI spec. (Lin Ming) BZ 580 1386 1387Fixed a problem with the LoadTable operator where the OemId and OemTableId 1388input strings could cause unexpected failures if they were shorter than the 1389maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576 1390 1391Implemented support for UserTerm (Method invocation) for the Unload operator 1392as per the ACPI spec. (Lin Ming) BZ 580 1393 1394Implemented header file support for new ACPI tables - BERT, ERST, EINJ, HEST, 1395IBFT, UEFI, WDAT. Disassembler support is forthcoming. 1396 1397Example Code and Data Size: These are the sizes for the OS-independent 1398acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1399debug version of the code includes the debug output trace mechanism and has 1400a much larger code and data size. 1401 1402 Previous Release: 1403 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 1404 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 1405 Current Release: 1406 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 1407 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 1408 14092) iASL Compiler/Disassembler and Tools: 1410 1411Implemented support in the disassembler for checksum validation on incoming 1412binary DSDTs and SSDTs. If incorrect, a message is displayed within the table 1413header dump at the start of the disassembly. 1414 1415Implemented additional debugging information in the namespace listing file 1416created during compilation. In addition to the namespace hierarchy, the full 1417pathname to each namespace object is displayed. 1418 1419Fixed a problem with the disassembler where invalid ACPI tables could cause 1420faults or infinite loops. 1421 1422Fixed an unexpected parse error when using the optional "parameter types" 1423list in a control method declaration. (Lin Ming) BZ 397 1424 1425Fixed a problem where two External declarations with the same name did not 1426cause an error (Lin Ming) BZ 509 1427 1428Implemented support for full TermArgs (adding Argx, Localx and method 1429invocation) for the ParameterData parameter to the LoadTable operator. (Lin 1430Ming) BZ 583,587 1431 1432---------------------------------------- 143319 December 2007. Summary of changes for version 20071219: 1434 14351) ACPI CA Core Subsystem: 1436 1437Implemented full support for deferred execution for the TermArg string 1438arguments for DataTableRegion. This enables forward references and full 1439operand resolution for the three string arguments. Similar to OperationRegion 1440deferred argument execution.) Lin Ming. BZ 430 1441 1442Implemented full argument resolution support for the BankValue argument to 1443BankField. Previously, only constants were supported, now any TermArg may be 1444used. Lin Ming BZ 387, 393 1445 1446Fixed a problem with AcpiGetDevices where the search of a branch of the 1447device tree could be terminated prematurely. In accordance with the ACPI 1448specification, the search down the current branch is terminated if a device 1449is both not present and not functional (instead of just not present.) Yakui 1450Zhao. 1451 1452Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly if 1453the underlying AML code changed the GPE enable registers. Now, any unknown 1454incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately disabled 1455instead of simply ignored. Rui Zhang. 1456 1457Fixed a problem with Index Fields where the Index register was incorrectly 1458limited to a maximum of 32 bits. Now any size may be used. 1459 1460Fixed a couple memory leaks associated with "implicit return" objects when 1461the AML Interpreter slack mode is enabled. Lin Ming BZ 349 1462 1463Example Code and Data Size: These are the sizes for the OS-independent 1464acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1465debug version of the code includes the debug output trace mechanism and has 1466a much larger code and data size. 1467 1468 Previous Release: 1469 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 1470 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 1471 Current Release: 1472 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 1473 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 1474 1475---------------------------------------- 147614 November 2007. Summary of changes for version 20071114: 1477 14781) ACPI CA Core Subsystem: 1479 1480Implemented event counters for each of the Fixed Events, the ACPI SCI 1481(interrupt) itself, and control methods executed. Named 1482AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. These 1483should be useful for debugging and statistics. 1484 1485Implemented a new external interface, AcpiGetStatistics, to retrieve the 1486contents of the various event counters. Returns the current values for 1487AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and 1488AcpiMethodCount. The interface can be expanded in the future if new counters 1489are added. Device drivers should use this interface rather than access the 1490counters directly. 1491 1492Fixed a problem with the FromBCD and ToBCD operators. With some compilers, 1493the ShortDivide function worked incorrectly, causing problems with the BCD 1494functions with large input values. A truncation from 64-bit to 32-bit 1495inadvertently occurred. Internal BZ 435. Lin Ming 1496 1497Fixed a problem with Index references passed as method arguments. References 1498passed as arguments to control methods were dereferenced immediately (before 1499control was passed to the called method). The references are now correctly 1500passed directly to the called method. BZ 5389. Lin Ming 1501 1502Fixed a problem with CopyObject used in conjunction with the Index operator. 1503The reference was incorrectly dereferenced before the copy. The reference is 1504now correctly copied. BZ 5391. Lin Ming 1505 1506Fixed a problem with Control Method references within Package objects. These 1507references are now correctly generated. This completes the package 1508construction overhaul that began in version 20071019. 1509 1510Example Code and Data Size: These are the sizes for the OS-independent 1511acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1512debug version of the code includes the debug output trace mechanism and has 1513a much larger code and data size. 1514 1515 Previous Release: 1516 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 1517 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 1518 Current Release: 1519 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 1520 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 1521 1522 15232) iASL Compiler/Disassembler and Tools: 1524 1525The AcpiExec utility now installs handlers for all of the predefined 1526Operation Region types. New types supported are: PCI_Config, CMOS, and 1527PCIBARTarget. 1528 1529Fixed a problem with the 64-bit version of AcpiExec where the extended (64- 1530bit) address fields for the DSDT and FACS within the FADT were not being 1531used, causing truncation of the upper 32-bits of these addresses. Lin Ming 1532and Bob Moore 1533 1534---------------------------------------- 153519 October 2007. Summary of changes for version 20071019: 1536 15371) ACPI CA Core Subsystem: 1538 1539Fixed a problem with the Alias operator when the target of the alias is a 1540named ASL operator that opens a new scope -- Scope, Device, PowerResource, 1541Processor, and ThermalZone. In these cases, any children of the original 1542operator could not be accessed via the alias, potentially causing unexpected 1543AE_NOT_FOUND exceptions. (BZ 9067) 1544 1545Fixed a problem with the Package operator where all named references were 1546created as object references and left otherwise unresolved. According to the 1547ACPI specification, a Package can only contain Data Objects or references to 1548control methods. The implication is that named references to Data Objects 1549(Integer, Buffer, String, Package, BufferField, Field) should be resolved 1550immediately upon package creation. This is the approach taken with this 1551change. References to all other named objects (Methods, Devices, Scopes, 1552etc.) are all now properly created as reference objects. (BZ 5328) 1553 1554Reverted a change to Notify handling that was introduced in version 155520070508. This version changed the Notify handling from asynchronous to 1556fully synchronous (Device driver Notify handling with respect to the Notify 1557ASL operator). It was found that this change caused more problems than it 1558solved and was removed by most users. 1559 1560Fixed a problem with the Increment and Decrement operators where the type of 1561the target object could be unexpectedly and incorrectly changed. (BZ 353) 1562Lin Ming. 1563 1564Fixed a problem with the Load and LoadTable operators where the table 1565location within the namespace was ignored. Instead, the table was always 1566loaded into the root or current scope. Lin Ming. 1567 1568Fixed a problem with the Load operator when loading a table from a buffer 1569object. The input buffer was prematurely zeroed and/or deleted. (BZ 577) 1570 1571Fixed a problem with the Debug object where a store of a DdbHandle reference 1572object to the Debug object could cause a fault. 1573 1574Added a table checksum verification for the Load operator, in the case where 1575the load is from a buffer. (BZ 578). 1576 1577Implemented additional parameter validation for the LoadTable operator. The 1578length of the input strings SignatureString, OemIdString, and OemTableId are 1579now checked for maximum lengths. (BZ 582) Lin Ming. 1580 1581Example Code and Data Size: These are the sizes for the OS-independent 1582acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1583debug version of the code includes the debug output trace mechanism and has 1584a much larger code and data size. 1585 1586 Previous Release: 1587 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 1588 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 1589 Current Release: 1590 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 1591 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 1592 1593 15942) iASL Compiler/Disassembler: 1595 1596Fixed a problem where if a single file was specified and the file did not 1597exist, no error message was emitted. (Introduced with wildcard support in 1598version 20070917.) 1599 1600---------------------------------------- 160119 September 2007. Summary of changes for version 20070919: 1602 16031) ACPI CA Core Subsystem: 1604 1605Designed and implemented new external interfaces to install and remove 1606handlers for ACPI table-related events. Current events that are defined are 1607LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as 1608they are dynamically loaded and unloaded. See AcpiInstallTableHandler and 1609AcpiRemoveTableHandler. (Lin Ming and Bob Moore) 1610 1611Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag 1612(acpi_serialized option on Linux) could cause some systems to hang during 1613initialization. (Bob Moore) BZ 8171 1614 1615Fixed a problem where objects of certain types (Device, ThermalZone, 1616Processor, PowerResource) can be not found if they are declared and 1617referenced from within the same control method (Lin Ming) BZ 341 1618 1619Example Code and Data Size: These are the sizes for the OS-independent 1620acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1621debug version of the code includes the debug output trace mechanism and has 1622a much larger code and data size. 1623 1624 Previous Release: 1625 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 1626 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 1627 Current Release: 1628 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 1629 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 1630 1631 16322) iASL Compiler/Disassembler: 1633 1634Implemented support to allow multiple files to be compiled/disassembled in a 1635single invocation. This includes command line wildcard support for both the 1636Windows and Unix versions of the compiler. This feature simplifies the 1637disassembly and compilation of multiple ACPI tables in a single directory. 1638 1639---------------------------------------- 164008 May 2007. Summary of changes for version 20070508: 1641 16421) ACPI CA Core Subsystem: 1643 1644Implemented a Microsoft compatibility design change for the handling of the 1645Notify AML operator. Previously, notify handlers were dispatched and 1646executed completely asynchronously in a deferred thread. The new design 1647still executes the notify handlers in a different thread, but the original 1648thread that executed the Notify() now waits at a synchronization point for 1649the notify handler to complete. Some machines depend on a synchronous Notify 1650operator in order to operate correctly. 1651 1652Implemented support to allow Package objects to be passed as method 1653arguments to the external AcpiEvaluateObject interface. Previously, this 1654would return the AE_NOT_IMPLEMENTED exception. This feature had not been 1655implemented since there were no reserved control methods that required it 1656until recently. 1657 1658Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs that 1659contained invalid non-zero values in reserved fields could cause later 1660failures because these fields have meaning in later revisions of the FADT. 1661For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The fields 1662are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.) 1663 1664Fixed a problem where the Global Lock handle was not properly updated if a 1665thread that acquired the Global Lock via executing AML code then attempted 1666to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by Joe 1667Liu. 1668 1669Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list 1670could be corrupted if the interrupt being removed was at the head of the 1671list. Reported by Linn Crosetto. 1672 1673Example Code and Data Size: These are the sizes for the OS-independent 1674acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1675debug version of the code includes the debug output trace mechanism and has 1676a much larger code and data size. 1677 1678 Previous Release: 1679 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 1680 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 1681 Current Release: 1682 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 1683 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 1684 1685---------------------------------------- 168620 March 2007. Summary of changes for version 20070320: 1687 16881) ACPI CA Core Subsystem: 1689 1690Implemented a change to the order of interpretation and evaluation of AML 1691operand objects within the AML interpreter. The interpreter now evaluates 1692operands in the order that they appear in the AML stream (and the 1693corresponding ASL code), instead of in the reverse order (after the entire 1694operand list has been parsed). The previous behavior caused several subtle 1695incompatibilities with the Microsoft AML interpreter as well as being 1696somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov. 1697 1698Implemented a change to the ACPI Global Lock support. All interfaces to the 1699global lock now allow the same thread to acquire the lock multiple times. 1700This affects the AcpiAcquireGlobalLock external interface to the global lock 1701as well as the internal use of the global lock to support AML fields -- a 1702control method that is holding the global lock can now simultaneously access 1703AML fields that require global lock protection. Previously, in both cases, 1704this would have resulted in an AE_ALREADY_ACQUIRED exception. The change to 1705AcpiAcquireGlobalLock is of special interest to drivers for the Embedded 1706Controller. There is no change to the behavior of the AML Acquire operator, 1707as this can already be used to acquire a mutex multiple times by the same 1708thread. BZ 8066. With assistance from Alexey Starikovskiy. 1709 1710Fixed a problem where invalid objects could be referenced in the AML 1711Interpreter after error conditions. During operand evaluation, ensure that 1712the internal "Return Object" field is cleared on error and only valid 1713pointers are stored there. Caused occasional access to deleted objects that 1714resulted in "large reference count" warning messages. Valery Podrezov. 1715 1716Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur on 1717deeply nested control method invocations. BZ 7873, local BZ 487. Valery 1718Podrezov. 1719 1720Fixed an internal problem with the handling of result objects on the 1721interpreter result stack. BZ 7872. Valery Podrezov. 1722 1723Removed obsolete code that handled the case where AML_NAME_OP is the target 1724of a reference (Reference.Opcode). This code was no longer necessary. BZ 17257874. Valery Podrezov. 1726 1727Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This was a 1728remnant from the previously discontinued 16-bit support. 1729 1730Example Code and Data Size: These are the sizes for the OS-independent 1731acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1732debug version of the code includes the debug output trace mechanism and has 1733a much larger code and data size. 1734 1735 Previous Release: 1736 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 1737 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 1738 Current Release: 1739 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 1740 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 1741 1742---------------------------------------- 174326 January 2007. Summary of changes for version 20070126: 1744 17451) ACPI CA Core Subsystem: 1746 1747Added the 2007 copyright to all module headers and signons. This affects 1748virtually every file in the ACPICA core subsystem, the iASL compiler, and 1749the utilities. 1750 1751Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable 1752during a table load. A bad pointer was passed in the case where the DSDT is 1753overridden, causing a fault in this case. 1754 1755Example Code and Data Size: These are the sizes for the OS-independent 1756acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1757debug version of the code includes the debug output trace mechanism and has 1758a much larger code and data size. 1759 1760 Previous Release: 1761 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 1762 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 1763 Current Release: 1764 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 1765 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 1766 1767---------------------------------------- 176815 December 2006. Summary of changes for version 20061215: 1769 17701) ACPI CA Core Subsystem: 1771 1772Support for 16-bit ACPICA has been completely removed since it is no longer 1773necessary and it clutters the code. All 16-bit macros, types, and 1774conditional compiles have been removed, cleaning up and simplifying the code 1775across the entire subsystem. DOS support is no longer needed since the 1776bootable Linux firmware kit is now available. 1777 1778The handler for the Global Lock is now removed during AcpiTerminate to 1779enable a clean subsystem restart, via the implementation of the 1780AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz, 1781HP) 1782 1783Implemented enhancements to the multithreading support within the debugger 1784to enable improved multithreading debugging and evaluation of the subsystem. 1785(Valery Podrezov) 1786 1787Debugger: Enhanced the Statistics/Memory command to emit the total (maximum) 1788memory used during the execution, as well as the maximum memory consumed by 1789each of the various object types. (Valery Podrezov) 1790 1791Example Code and Data Size: These are the sizes for the OS-independent 1792acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1793debug version of the code includes the debug output trace mechanism and has 1794a much larger code and data size. 1795 1796 Previous Release: 1797 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 1798 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 1799 Current Release: 1800 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 1801 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 1802 1803 18042) iASL Compiler/Disassembler and Tools: 1805 1806AcpiExec: Implemented a new option (-m) to display full memory use 1807statistics upon subsystem/program termination. (Valery Podrezov) 1808 1809---------------------------------------- 181009 November 2006. Summary of changes for version 20061109: 1811 18121) ACPI CA Core Subsystem: 1813 1814Optimized the Load ASL operator in the case where the source operand is an 1815operation region. Simply map the operation region memory, instead of 1816performing a bytewise read. (Region must be of type SystemMemory, see 1817below.) 1818 1819Fixed the Load ASL operator for the case where the source operand is a 1820region field. A buffer object is also allowed as the source operand. BZ 480 1821 1822Fixed a problem where the Load ASL operator allowed the source operand to be 1823an operation region of any type. It is now restricted to regions of type 1824SystemMemory, as per the ACPI specification. BZ 481 1825 1826Additional cleanup and optimizations for the new Table Manager code. 1827 1828AcpiEnable will now fail if all of the required ACPI tables are not loaded 1829(FADT, FACS, DSDT). BZ 477 1830 1831Added #pragma pack(8/4) to acobject.h to ensure that the structures in this 1832header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been 1833manually optimized to be aligned and will not work if it is byte-packed. 1834 1835Example Code and Data Size: These are the sizes for the OS-independent 1836acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1837debug version of the code includes the debug output trace mechanism and has 1838a much larger code and data size. 1839 1840 Previous Release: 1841 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 1842 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 1843 Current Release: 1844 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 1845 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 1846 1847 18482) iASL Compiler/Disassembler and Tools: 1849 1850Fixed a problem where the presence of the _OSI predefined control method 1851within complex expressions could cause an internal compiler error. 1852 1853AcpiExec: Implemented full region support for multiple address spaces. 1854SpaceId is now part of the REGION object. BZ 429 1855 1856---------------------------------------- 185711 October 2006. Summary of changes for version 20061011: 1858 18591) ACPI CA Core Subsystem: 1860 1861Completed an AML interpreter performance enhancement for control method 1862execution. Previously a 2-pass parse/execution, control methods are now 1863completely parsed and executed in a single pass. This improves overall 1864interpreter performance by ~25%, reduces code size, and reduces CPU stack 1865use. (Valery Podrezov + interpreter changes in version 20051202 that 1866eliminated namespace loading during the pass one parse.) 1867 1868Implemented _CID support for PCI Root Bridge detection. If the _HID does not 1869match the predefined PCI Root Bridge IDs, the _CID list (if present) is now 1870obtained and also checked for an ID match. 1871 1872Implemented additional support for the PCI _ADR execution: upsearch until a 1873device scope is found before executing _ADR. This allows PCI_Config 1874operation regions to be declared locally within control methods underneath 1875PCI device objects. 1876 1877Fixed a problem with a possible race condition between threads executing 1878AcpiWalkNamespace and the AML interpreter. This condition was removed by 1879modifying AcpiWalkNamespace to (by default) ignore all temporary namespace 1880entries created during any concurrent control method execution. An 1881additional namespace race condition is known to exist between 1882AcpiWalkNamespace and the Load/Unload ASL operators and is still under 1883investigation. 1884 1885Restructured the AML ParseLoop function, breaking it into several 1886subfunctions in order to reduce CPU stack use and improve maintainability. 1887(Mikhail Kouzmich) 1888 1889AcpiGetHandle: Fix for parameter validation to detect invalid combinations 1890of prefix handle and pathname. BZ 478 1891 1892Example Code and Data Size: These are the sizes for the OS-independent 1893acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1894debug version of the code includes the debug output trace mechanism and has 1895a much larger code and data size. 1896 1897 Previous Release: 1898 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 1899 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 1900 Current Release: 1901 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 1902 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 1903 19042) iASL Compiler/Disassembler and Tools: 1905 1906Ported the -g option (get local ACPI tables) to the new ACPICA Table Manager 1907to restore original behavior. 1908 1909---------------------------------------- 191027 September 2006. Summary of changes for version 20060927: 1911 19121) ACPI CA Core Subsystem: 1913 1914Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister. 1915These functions now use a spinlock for mutual exclusion and the interrupt 1916level indication flag is not needed. 1917 1918Fixed a problem with the Global Lock where the lock could appear to be 1919obtained before it is actually obtained. The global lock semaphore was 1920inadvertently created with one unit instead of zero units. (BZ 464) Fiodor 1921Suietov. 1922 1923Fixed a possible memory leak and fault in AcpiExResolveObjectToValue during 1924a read from a buffer or region field. (BZ 458) Fiodor Suietov. 1925 1926Example Code and Data Size: These are the sizes for the OS-independent 1927acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1928debug version of the code includes the debug output trace mechanism and has 1929a much larger code and data size. 1930 1931 Previous Release: 1932 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 1933 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 1934 Current Release: 1935 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 1936 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 1937 1938 19392) iASL Compiler/Disassembler and Tools: 1940 1941Fixed a compilation problem with the pre-defined Resource Descriptor field 1942names where an "object does not exist" error could be incorrectly generated 1943if the parent ResourceTemplate pathname places the template within a 1944different namespace scope than the current scope. (BZ 7212) 1945 1946Fixed a problem where the compiler could hang after syntax errors detected 1947in an ElseIf construct. (BZ 453) 1948 1949Fixed a problem with the AmlFilename parameter to the DefinitionBlock() 1950operator. An incorrect output filename was produced when this parameter was 1951a null string (""). Now, the original input filename is used as the AML 1952output filename, with an ".aml" extension. 1953 1954Implemented a generic batch command mode for the AcpiExec utility (execute 1955any AML debugger command) (Valery Podrezov). 1956 1957---------------------------------------- 195812 September 2006. Summary of changes for version 20060912: 1959 19601) ACPI CA Core Subsystem: 1961 1962Enhanced the implementation of the "serialized mode" of the interpreter 1963(enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is 1964specified, instead of creating a serialization semaphore per control method, 1965the interpreter lock is simply no longer released before a blocking 1966operation during control method execution. This effectively makes the AML 1967Interpreter single-threaded. The overhead of a semaphore per-method is 1968eliminated. 1969 1970Fixed a regression where an error was no longer emitted if a control method 1971attempts to create 2 objects of the same name. This once again returns 1972AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism that 1973will dynamically serialize the control method to possible prevent future 1974errors. (BZ 440) 1975 1976Integrated a fix for a problem with PCI Express HID detection in the PCI 1977Config Space setup procedure. (BZ 7145) 1978 1979Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the 1980AcpiHwInitialize function - the FADT registers are now validated when the 1981table is loaded. 1982 1983Added two new warnings during FADT verification - 1) if the FADT is larger 1984than the largest known FADT version, and 2) if there is a mismatch between a 198532-bit block address and the 64-bit X counterpart (when both are non-zero.) 1986 1987Example Code and Data Size: These are the sizes for the OS-independent 1988acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1989debug version of the code includes the debug output trace mechanism and has 1990a much larger code and data size. 1991 1992 Previous Release: 1993 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 1994 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 1995 Current Release: 1996 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 1997 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 1998 1999 20002) iASL Compiler/Disassembler and Tools: 2001 2002Fixed a problem with the implementation of the Switch() operator where the 2003temporary variable was declared too close to the actual Switch, instead of 2004at method level. This could cause a problem if the Switch() operator is 2005within a while loop, causing an error on the second iteration. (BZ 460) 2006 2007Disassembler - fix for error emitted for unknown type for target of scope 2008operator. Now, ignore it and continue. 2009 2010Disassembly of an FADT now verifies the input FADT and reports any errors 2011found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs. 2012 2013Disassembly of raw data buffers with byte initialization data now prefixes 2014each output line with the current buffer offset. 2015 2016Disassembly of ASF! table now includes all variable-length data fields at 2017the end of some of the subtables. 2018 2019The disassembler now emits a comment if a buffer appears to be a 2020ResourceTemplate, but cannot be disassembled as such because the EndTag does 2021not appear at the very end of the buffer. 2022 2023AcpiExec - Added the "-t" command line option to enable the serialized mode 2024of the AML interpreter. 2025 2026---------------------------------------- 202731 August 2006. Summary of changes for version 20060831: 2028 20291) ACPI CA Core Subsystem: 2030 2031Miscellaneous fixes for the Table Manager: 2032- Correctly initialize internal common FADT for all 64-bit "X" fields 2033- Fixed a couple table mapping issues during table load 2034- Fixed a couple alignment issues for IA64 2035- Initialize input array to zero in AcpiInitializeTables 2036- Additional parameter validation for AcpiGetTable, AcpiGetTableHeader, 2037AcpiGetTableByIndex 2038 2039Change for GPE support: when a "wake" GPE is received, all wake GPEs are now 2040immediately disabled to prevent the waking GPE from firing again and to 2041prevent other wake GPEs from interrupting the wake process. 2042 2043Added the AcpiGpeCount global that tracks the number of processed GPEs, to 2044be used for debugging systems with a large number of ACPI interrupts. 2045 2046Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in 2047both the ACPICA headers and the disassembler. 2048 2049Example Code and Data Size: These are the sizes for the OS-independent 2050acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2051debug version of the code includes the debug output trace mechanism and has 2052a much larger code and data size. 2053 2054 Previous Release: 2055 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 2056 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 2057 Current Release: 2058 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 2059 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 2060 2061 20622) iASL Compiler/Disassembler and Tools: 2063 2064Disassembler support for the DMAR ACPI table. 2065 2066---------------------------------------- 206723 August 2006. Summary of changes for version 20060823: 2068 20691) ACPI CA Core Subsystem: 2070 2071The Table Manager component has been completely redesigned and 2072reimplemented. The new design is much simpler, and reduces the overall code 2073and data size of the kernel-resident ACPICA by approximately 5%. Also, it is 2074now possible to obtain the ACPI tables very early during kernel 2075initialization, even before dynamic memory management is initialized. 2076(Alexey Starikovskiy, Fiodor Suietov, Bob Moore) 2077 2078Obsolete ACPICA interfaces: 2079 2080- AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel init 2081time). 2082- AcpiLoadTable: Not needed. 2083- AcpiUnloadTable: Not needed. 2084 2085New ACPICA interfaces: 2086 2087- AcpiInitializeTables: Must be called before the table manager can be used. 2088- AcpiReallocateRootTable: Used to transfer the root table to dynamically 2089allocated memory after it becomes available. 2090- AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI tables 2091in the RSDT/XSDT. 2092 2093Other ACPICA changes: 2094 2095- AcpiGetTableHeader returns the actual mapped table header, not a copy. Use 2096AcpiOsUnmapMemory to free this mapping. 2097- AcpiGetTable returns the actual mapped table. The mapping is managed 2098internally and must not be deleted by the caller. Use of this interface 2099causes no additional dynamic memory allocation. 2100- AcpiFindRootPointer: Support for physical addressing has been eliminated, 2101it appeared to be unused. 2102- The interface to AcpiOsMapMemory has changed to be consistent with the 2103other allocation interfaces. 2104- The interface to AcpiOsGetRootPointer has changed to eliminate unnecessary 2105parameters. 2106- ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 64- 2107bit platforms. Was previously 64 bits on all platforms. 2108- The interface to the ACPI Global Lock acquire/release macros have changed 2109slightly since ACPICA no longer keeps a local copy of the FACS with a 2110constructed pointer to the actual global lock. 2111 2112Porting to the new table manager: 2113 2114- AcpiInitializeTables: Must be called once, and can be called anytime 2115during the OS initialization process. It allows the host to specify an area 2116of memory to be used to store the internal version of the RSDT/XSDT (root 2117table). This allows the host to access ACPI tables before memory management 2118is initialized and running. 2119- AcpiReallocateRootTable: Can be called after memory management is running 2120to copy the root table to a dynamically allocated array, freeing up the 2121scratch memory specified in the call to AcpiInitializeTables. 2122- AcpiSubsystemInitialize: This existing interface is independent of the 2123Table Manager, and does not have to be called before the Table Manager can 2124be used, it only must be called before the rest of ACPICA can be used. 2125- ACPI Tables: Some changes have been made to the names and structure of the 2126actbl.h and actbl1.h header files and may require changes to existing code. 2127For example, bitfields have been completely removed because of their lack of 2128portability across C compilers. 2129- Update interfaces to the Global Lock acquire/release macros if local 2130versions are used. (see acwin.h) 2131 2132Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c 2133 2134New files: tbfind.c 2135 2136Example Code and Data Size: These are the sizes for the OS-independent 2137acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2138debug version of the code includes the debug output trace mechanism and has 2139a much larger code and data size. 2140 2141 Previous Release: 2142 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 2143 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 2144 Current Release: 2145 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 2146 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 2147 2148 21492) iASL Compiler/Disassembler and Tools: 2150 2151No changes for this release. 2152 2153---------------------------------------- 215421 July 2006. Summary of changes for version 20060721: 2155 21561) ACPI CA Core Subsystem: 2157 2158The full source code for the ASL test suite used to validate the iASL 2159compiler and the ACPICA core subsystem is being released with the ACPICA 2160source for the first time. The source is contained in a separate package and 2161consists of over 1100 files that exercise all ASL/AML operators. The package 2162should appear on the Intel/ACPI web site shortly. (Valery Podrezov, Fiodor 2163Suietov) 2164 2165Completed a new design and implementation for support of the ACPI Global 2166Lock. On the OS side, the global lock is now treated as a standard AML 2167mutex. Previously, multiple OS threads could "acquire" the global lock 2168simultaneously. However, this could cause the BIOS to be starved out of the 2169lock - especially in cases such as the Embedded Controller driver where 2170there is a tight coupling between the OS and the BIOS. 2171 2172Implemented an optimization for the ACPI Global Lock interrupt mechanism. 2173The Global Lock interrupt handler no longer queues the execution of a 2174separate thread to signal the global lock semaphore. Instead, the semaphore 2175is signaled directly from the interrupt handler. 2176 2177Implemented support within the AML interpreter for package objects that 2178contain a larger AML length (package list length) than the package element 2179count. In this case, the length of the package is truncated to match the 2180package element count. Some BIOS code apparently modifies the package length 2181on the fly, and this change supports this behavior. Provides compatibility 2182with the MS AML interpreter. (With assistance from Fiodor Suietov) 2183 2184Implemented a temporary fix for the BankValue parameter of a Bank Field to 2185support all constant values, now including the Zero and One opcodes. 2186Evaluation of this parameter must eventually be converted to a full TermArg 2187evaluation. A not-implemented error is now returned (temporarily) for non- 2188constant values for this parameter. 2189 2190Fixed problem reports (Fiodor Suietov) integrated: 2191- Fix for premature object deletion after CopyObject on Operation Region (BZ 2192350) 2193 2194Example Code and Data Size: These are the sizes for the OS-independent 2195acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2196debug version of the code includes the debug output trace mechanism and has 2197a much larger code and data size. 2198 2199 Previous Release: 2200 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total 2201 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total 2202 Current Release: 2203 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 2204 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 2205 2206 22072) iASL Compiler/Disassembler and Tools: 2208 2209No changes for this release. 2210 2211---------------------------------------- 221207 July 2006. Summary of changes for version 20060707: 2213 22141) ACPI CA Core Subsystem: 2215 2216Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers 2217that do not allow the initialization of address pointers within packed 2218structures - even though the hardware itself may support misaligned 2219transfers. Some of the debug data structures are packed by default to 2220minimize size. 2221 2222Added an error message for the case where AcpiOsGetThreadId() returns zero. 2223A non-zero value is required by the core ACPICA code to ensure the proper 2224operation of AML mutexes and recursive control methods. 2225 2226The DSDT is now the only ACPI table that determines whether the AML 2227interpreter is in 32-bit or 64-bit mode. Not really a functional change, but 2228the hooks for per-table 32/64 switching have been removed from the code. A 2229clarification to the ACPI specification is forthcoming in ACPI 3.0B. 2230 2231Fixed a possible leak of an OwnerID in the error path of 2232AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID 2233deletion to a single place in AcpiTbUninstallTable to correct possible leaks 2234when using the AcpiTbDeleteTablesByType interface (with assistance from 2235Lance Ortiz.) 2236 2237Fixed a problem with Serialized control methods where the semaphore 2238associated with the method could be over-signaled after multiple method 2239invocations. 2240 2241Fixed two issues with the locking of the internal namespace data structure. 2242Both the Unload() operator and AcpiUnloadTable interface now lock the 2243namespace during the namespace deletion associated with the table unload 2244(with assistance from Linn Crosetto.) 2245 2246Fixed problem reports (Valery Podrezov) integrated: 2247- Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426) 2248 2249Fixed problem reports (Fiodor Suietov) integrated: 2250- Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369) 2251- On Address Space handler deletion, needless deactivation call (BZ 374) 2252- AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 375) 2253- Possible memory leak, Notify sub-objects of Processor, Power, ThermalZone 2254(BZ 376) 2255- AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378) 2256- Minimum Length of RSDT should be validated (BZ 379) 2257- AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no 2258Handler (BZ (380) 2259- AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type loaded 2260(BZ 381) 2261 2262Example Code and Data Size: These are the sizes for the OS-independent 2263acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2264debug version of the code includes the debug output trace mechanism and has 2265a much larger code and data size. 2266 2267 Previous Release: 2268 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 2269 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 2270 Current Release: 2271 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 2272 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 2273 2274 22752) iASL Compiler/Disassembler and Tools: 2276 2277Fixed problem reports: 2278Compiler segfault when ASL contains a long (>1024) String declaration (BZ 2279436) 2280 2281---------------------------------------- 228223 June 2006. Summary of changes for version 20060623: 2283 22841) ACPI CA Core Subsystem: 2285 2286Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This 2287allows the type to be customized to the host OS for improved efficiency 2288(since a spinlock is usually a very small object.) 2289 2290Implemented support for "ignored" bits in the ACPI registers. According to 2291the ACPI specification, these bits should be preserved when writing the 2292registers via a read/modify/write cycle. There are 3 bits preserved in this 2293manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11]. 2294 2295Implemented the initial deployment of new OSL mutex interfaces. Since some 2296host operating systems have separate mutex and semaphore objects, this 2297feature was requested. The base code now uses mutexes (and the new mutex 2298interfaces) wherever a binary semaphore was used previously. However, for 2299the current release, the mutex interfaces are defined as macros to map them 2300to the existing semaphore interfaces. Therefore, no OSL changes are required 2301at this time. (See acpiosxf.h) 2302 2303Fixed several problems with the support for the control method SyncLevel 2304parameter. The SyncLevel now works according to the ACPI specification and 2305in concert with the Mutex SyncLevel parameter, since the current SyncLevel 2306is a property of the executing thread. Mutual exclusion for control methods 2307is now implemented with a mutex instead of a semaphore. 2308 2309Fixed three instances of the use of the C shift operator in the bitfield 2310support code (exfldio.c) to avoid the use of a shift value larger than the 2311target data width. The behavior of C compilers is undefined in this case and 2312can cause unpredictable results, and therefore the case must be detected and 2313avoided. (Fiodor Suietov) 2314 2315Added an info message whenever an SSDT or OEM table is loaded dynamically 2316via the Load() or LoadTable() ASL operators. This should improve debugging 2317capability since it will show exactly what tables have been loaded (beyond 2318the tables present in the RSDT/XSDT.) 2319 2320Example Code and Data Size: These are the sizes for the OS-independent 2321acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2322debug version of the code includes the debug output trace mechanism and has 2323a much larger code and data size. 2324 2325 Previous Release: 2326 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 2327 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 2328 Current Release: 2329 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 2330 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 2331 2332 23332) iASL Compiler/Disassembler and Tools: 2334 2335No changes for this release. 2336 2337---------------------------------------- 233808 June 2006. Summary of changes for version 20060608: 2339 23401) ACPI CA Core Subsystem: 2341 2342Converted the locking mutex used for the ACPI hardware to a spinlock. This 2343change should eliminate all problems caused by attempting to acquire a 2344semaphore at interrupt level, and it means that all ACPICA external 2345interfaces that directly access the ACPI hardware can be safely called from 2346interrupt level. OSL code that implements the semaphore interfaces should be 2347able to eliminate any workarounds for being called at interrupt level. 2348 2349Fixed a regression introduced in 20060526 where the ACPI device 2350initialization could be prematurely aborted with an AE_NOT_FOUND if a device 2351did not have an optional _INI method. 2352 2353Fixed an IndexField issue where a write to the Data Register should be 2354limited in size to the AccessSize (width) of the IndexField itself. (BZ 433, 2355Fiodor Suietov) 2356 2357Fixed problem reports (Valery Podrezov) integrated: 2358- Allow store of ThermalZone objects to Debug object (BZ 5369/5370) 2359 2360Fixed problem reports (Fiodor Suietov) integrated: 2361- AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364) 2362 2363Removed four global mutexes that were obsolete and were no longer being 2364used. 2365 2366Example Code and Data Size: These are the sizes for the OS-independent 2367acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2368debug version of the code includes the debug output trace mechanism and has 2369a much larger code and data size. 2370 2371 Previous Release: 2372 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 2373 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 2374 Current Release: 2375 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 2376 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 2377 2378 23792) iASL Compiler/Disassembler and Tools: 2380 2381Fixed a fault when using -g option (get tables from registry) on Windows 2382machines. 2383 2384Fixed problem reports integrated: 2385- Generate error if CreateField NumBits parameter is zero. (BZ 405) 2386- Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor 2387Suietov) 2388- Global table revision override (-r) is ignored (BZ 413) 2389 2390---------------------------------------- 239126 May 2006. Summary of changes for version 20060526: 2392 23931) ACPI CA Core Subsystem: 2394 2395Restructured, flattened, and simplified the internal interfaces for 2396namespace object evaluation - resulting in smaller code, less CPU stack use, 2397and fewer interfaces. (With assistance from Mikhail Kouzmich) 2398 2399Fixed a problem with the CopyObject operator where the first parameter was 2400not typed correctly for the parser, interpreter, compiler, and disassembler. 2401Caused various errors and unexpected behavior. 2402 2403Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits 2404produced incorrect results with some C compilers. Since the behavior of C 2405compilers when the shift value is larger than the datatype width is 2406apparently not well defined, the interpreter now detects this condition and 2407simply returns zero as expected in all such cases. (BZ 395) 2408 2409Fixed problem reports (Valery Podrezov) integrated: 2410- Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329) 2411- Allow interpreter to handle nested method declarations (BZ 5361) 2412 2413Fixed problem reports (Fiodor Suietov) integrated: 2414- AcpiTerminate doesn't free debug memory allocation list objects (BZ 355) 2415- After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 356) 2416- AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357) 2417- Resource Manager should return AE_TYPE for non-device objects (BZ 358) 2418- Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359) 2419- Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360) 2420- Incomplete cleanup branch in AcpiPsParseAml (BZ 361) 2421- Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362) 2422- AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ 365) 2423- Status of the Global Initialization Handler call not used (BZ 366) 2424- Incorrect object parameter to Global Initialization Handler (BZ 367) 2425 2426Example Code and Data Size: These are the sizes for the OS-independent 2427acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2428debug version of the code includes the debug output trace mechanism and has 2429a much larger code and data size. 2430 2431 Previous Release: 2432 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 2433 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 2434 Current Release: 2435 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 2436 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 2437 2438 24392) iASL Compiler/Disassembler and Tools: 2440 2441Modified the parser to allow the names IO, DMA, and IRQ to be used as 2442namespace identifiers with no collision with existing resource descriptor 2443macro names. This provides compatibility with other ASL compilers and is 2444most useful for disassembly/recompilation of existing tables without parse 2445errors. (With assistance from Thomas Renninger) 2446 2447Disassembler: fixed an incorrect disassembly problem with the 2448DataTableRegion and CopyObject operators. Fixed a possible fault during 2449disassembly of some Alias operators. 2450 2451---------------------------------------- 245212 May 2006. Summary of changes for version 20060512: 2453 24541) ACPI CA Core Subsystem: 2455 2456Replaced the AcpiOsQueueForExecution interface with a new interface named 2457AcpiOsExecute. The major difference is that the new interface does not have 2458a Priority parameter, this appeared to be useless and has been replaced by a 2459Type parameter. The Type tells the host what type of execution is being 2460requested, such as global lock handler, notify handler, GPE handler, etc. 2461This allows the host to queue and execute the request as appropriate for the 2462request type, possibly using different work queues and different priorities 2463for the various request types. This enables fixes for multithreading 2464deadlock problems such as BZ #5534, and will require changes to all existing 2465OS interface layers. (Alexey Starikovskiy and Bob Moore) 2466 2467Fixed a possible memory leak associated with the support for the so-called 2468"implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor 2469Suietov) 2470 2471Fixed a problem with the Load() operator where a table load from an 2472operation region could overwrite an internal table buffer by up to 7 bytes 2473and cause alignment faults on IPF systems. (With assistance from Luming Yu) 2474 2475Example Code and Data Size: These are the sizes for the OS-independent 2476acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2477debug version of the code includes the debug output trace mechanism and has 2478a much larger code and data size. 2479 2480 Previous Release: 2481 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 2482 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 2483 Current Release: 2484 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 2485 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 2486 2487 2488 24892) iASL Compiler/Disassembler and Tools: 2490 2491Disassembler: Implemented support to cross reference the internal namespace 2492and automatically generate ASL External() statements for symbols not defined 2493within the current table being disassembled. This will simplify the 2494disassembly and recompilation of interdependent tables such as SSDTs since 2495these statements will no longer have to be added manually. 2496 2497Disassembler: Implemented experimental support to automatically detect 2498invocations of external control methods and generate appropriate External() 2499statements. This is problematic because the AML cannot be correctly parsed 2500until the number of arguments for each control method is known. Currently, 2501standalone method invocations and invocations as the source operand of a 2502Store() statement are supported. 2503 2504Disassembler: Implemented support for the ASL pseudo-operators LNotEqual, 2505LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()), 2506LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code 2507more readable and likely closer to the original ASL source. 2508 2509---------------------------------------- 251021 April 2006. Summary of changes for version 20060421: 2511 25121) ACPI CA Core Subsystem: 2513 2514Removed a device initialization optimization introduced in 20051216 where 2515the _STA method was not run unless an _INI was also present for the same 2516device. This optimization could cause problems because it could allow _INI 2517methods to be run within a not-present device subtree. (If a not-present 2518device had no _INI, _STA would not be run, the not-present status would not 2519be discovered, and the children of the device would be incorrectly 2520traversed.) 2521 2522Implemented a new _STA optimization where namespace subtrees that do not 2523contain _INI are identified and ignored during device initialization. 2524Selectively running _STA can significantly improve boot time on large 2525machines (with assistance from Len Brown.) 2526 2527Implemented support for the device initialization case where the returned 2528_STA flags indicate a device not-present but functioning. In this case, _INI 2529is not run, but the device children are examined for presence, as per the 2530ACPI specification. 2531 2532Implemented an additional change to the IndexField support in order to 2533conform to MS behavior. The value written to the Index Register is not 2534simply a byte offset, it is a byte offset in units of the access width of 2535the parent Index Field. (Fiodor Suietov) 2536 2537Defined and deployed a new OSL interface, AcpiOsValidateAddress. This 2538interface is called during the creation of all AML operation regions, and 2539allows the host OS to exert control over what addresses it will allow the 2540AML code to access. Operation Regions whose addresses are disallowed will 2541cause a runtime exception when they are actually accessed (will not affect 2542or abort table loading.) See oswinxf or osunixxf for an example 2543implementation. 2544 2545Defined and deployed a new OSL interface, AcpiOsValidateInterface. This 2546interface allows the host OS to match the various "optional" 2547interface/behavior strings for the _OSI predefined control method as 2548appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf 2549for an example implementation. 2550 2551Restructured and corrected various problems in the exception handling code 2552paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod 2553(with assistance from Takayoshi Kochi.) 2554 2555Modified the Linux source converter to ignore quoted string literals while 2556converting identifiers from mixed to lower case. This will correct problems 2557with the disassembler and other areas where such strings must not be 2558modified. 2559 2560The ACPI_FUNCTION_* macros no longer require quotes around the function 2561name. This allows the Linux source converter to convert the names, now that 2562the converter ignores quoted strings. 2563 2564Example Code and Data Size: These are the sizes for the OS-independent 2565acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2566debug version of the code includes the debug output trace mechanism and has 2567a much larger code and data size. 2568 2569 Previous Release: 2570 2571 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 2572 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 2573 Current Release: 2574 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 2575 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 2576 2577 25782) iASL Compiler/Disassembler and Tools: 2579 2580Implemented 3 new warnings for iASL, and implemented multiple warning levels 2581(w2 flag). 2582 25831) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is not 2584WAIT_FOREVER (0xFFFF) and the code does not examine the return value to 2585check for the possible timeout, a warning is issued. 2586 25872) Useless operators: If an ASL operator does not specify an optional target 2588operand and it also does not use the function return value from the 2589operator, a warning is issued since the operator effectively does nothing. 2590 25913) Unreferenced objects: If a namespace object is created, but never 2592referenced, a warning is issued. This is a warning level 2 since there are 2593cases where this is ok, such as when a secondary table is loaded that uses 2594the unreferenced objects. Even so, care is taken to only flag objects that 2595don't look like they will ever be used. For example, the reserved methods 2596(starting with an underscore) are usually not referenced because it is 2597expected that the OS will invoke them. 2598 2599---------------------------------------- 260031 March 2006. Summary of changes for version 20060331: 2601 26021) ACPI CA Core Subsystem: 2603 2604Implemented header file support for the following additional ACPI tables: 2605ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this support, 2606all current and known ACPI tables are now defined in the ACPICA headers and 2607are available for use by device drivers and other software. 2608 2609Implemented support to allow tables that contain ACPI names with invalid 2610characters to be loaded. Previously, this would cause the table load to 2611fail, but since there are several known cases of such tables on existing 2612machines, this change was made to enable ACPI support for them. Also, this 2613matches the behavior of the Microsoft ACPI implementation. 2614 2615Fixed a couple regressions introduced during the memory optimization in the 261620060317 release. The namespace node definition required additional 2617reorganization and an internal datatype that had been changed to 8-bit was 2618restored to 32-bit. (Valery Podrezov) 2619 2620Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState 2621could be passed through to AcpiOsReleaseObject which is unexpected. Such 2622null pointers are now trapped and ignored, matching the behavior of the 2623previous implementation before the deployment of AcpiOsReleaseObject. 2624(Valery Podrezov, Fiodor Suietov) 2625 2626Fixed a memory mapping leak during the deletion of a SystemMemory operation 2627region where a cached memory mapping was not deleted. This became a 2628noticeable problem for operation regions that are defined within frequently 2629used control methods. (Dana Meyers) 2630 2631Reorganized the ACPI table header files into two main files: one for the 2632ACPI tables consumed by the ACPICA core, and another for the miscellaneous 2633ACPI tables that are consumed by the drivers and other software. The various 2634FADT definitions were merged into one common section and three different 2635tables (ACPI 1.0, 1.0+, and 2.0) 2636 2637Example Code and Data Size: These are the sizes for the OS-independent 2638acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2639debug version of the code includes the debug output trace mechanism and has 2640a much larger code and data size. 2641 2642 Previous Release: 2643 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 2644 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 2645 Current Release: 2646 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 2647 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 2648 2649 26502) iASL Compiler/Disassembler and Tools: 2651 2652Disassembler: Implemented support to decode and format all non-AML ACPI 2653tables (tables other than DSDTs and SSDTs.) This includes the new tables 2654added to the ACPICA headers, therefore all current and known ACPI tables are 2655supported. 2656 2657Disassembler: The change to allow ACPI names with invalid characters also 2658enables the disassembly of such tables. Invalid characters within names are 2659changed to '*' to make the name printable; the iASL compiler will still 2660generate an error for such names, however, since this is an invalid ACPI 2661character. 2662 2663Implemented an option for AcpiXtract (-a) to extract all tables found in the 2664input file. The default invocation extracts only the DSDTs and SSDTs. 2665 2666Fixed a couple of gcc generation issues for iASL and AcpiExec and added a 2667makefile for the AcpiXtract utility. 2668 2669---------------------------------------- 267017 March 2006. Summary of changes for version 20060317: 2671 26721) ACPI CA Core Subsystem: 2673 2674Implemented the use of a cache object for all internal namespace nodes. 2675Since there are about 1000 static nodes in a typical system, this will 2676decrease memory use for cache implementations that minimize per-allocation 2677overhead (such as a slab allocator.) 2678 2679Removed the reference count mechanism for internal namespace nodes, since it 2680was deemed unnecessary. This reduces the size of each namespace node by 2681about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit case, 2682and 32 bytes for the 64-bit case. 2683 2684Optimized several internal data structures to reduce object size on 64-bit 2685platforms by packing data within the 64-bit alignment. This includes the 2686frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static 2687instances corresponding to the namespace objects. 2688 2689Added two new strings for the predefined _OSI method: "Windows 2001.1 SP1" 2690and "Windows 2006". 2691 2692Split the allocation tracking mechanism out to a separate file, from 2693utalloc.c to uttrack.c. This mechanism appears to be only useful for 2694application-level code. Kernels may wish to not include uttrack.c in 2695distributions. 2696 2697Removed all remnants of the obsolete ACPI_REPORT_* macros and the associated 2698code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING 2699macros.) 2700 2701Code and Data Size: These are the sizes for the acpica.lib produced by the 2702Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 2703driver or OSPM code. The debug version of the code includes the debug output 2704trace mechanism and has a much larger code and data size. Note that these 2705values will vary depending on the efficiency of the compiler and the 2706compiler options used during generation. 2707 2708 Previous Release: 2709 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 2710 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 2711 Current Release: 2712 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 2713 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 2714 2715 27162) iASL Compiler/Disassembler and Tools: 2717 2718Implemented an ANSI C version of the acpixtract utility. This version will 2719automatically extract the DSDT and all SSDTs from the input acpidump text 2720file and dump the binary output to separate files. It can also display a 2721summary of the input file including the headers for each table found and 2722will extract any single ACPI table, with any signature. (See 2723source/tools/acpixtract) 2724 2725---------------------------------------- 272610 March 2006. Summary of changes for version 20060310: 2727 27281) ACPI CA Core Subsystem: 2729 2730Tagged all external interfaces to the subsystem with the new 2731ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to assist 2732kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL 2733macro. The default definition is NULL. 2734 2735Added the ACPI_THREAD_ID type for the return value from AcpiOsGetThreadId. 2736This allows the host to define this as necessary to simplify kernel 2737integration. The default definition is ACPI_NATIVE_UINT. 2738 2739Fixed two interpreter problems related to error processing, the deletion of 2740objects, and placing invalid pointers onto the internal operator result 2741stack. BZ 6028, 6151 (Valery Podrezov) 2742 2743Increased the reference count threshold where a warning is emitted for large 2744reference counts in order to eliminate unnecessary warnings on systems with 2745large namespaces (especially 64-bit.) Increased the value from 0x400 to 27460x800. 2747 2748Due to universal disagreement as to the meaning of the 'c' in the calloc() 2749function, the ACPI_MEM_CALLOCATE macro has been renamed to 2750ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'. 2751ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and 2752ACPI_FREE. 2753 2754Code and Data Size: These are the sizes for the acpica.lib produced by the 2755Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 2756driver or OSPM code. The debug version of the code includes the debug output 2757trace mechanism and has a much larger code and data size. Note that these 2758values will vary depending on the efficiency of the compiler and the 2759compiler options used during generation. 2760 2761 Previous Release: 2762 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 2763 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 2764 Current Release: 2765 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 2766 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 2767 2768 27692) iASL Compiler/Disassembler: 2770 2771Disassembler: implemented support for symbolic resource descriptor 2772references. If a CreateXxxxField operator references a fixed offset within a 2773resource descriptor, a name is assigned to the descriptor and the offset is 2774translated to the appropriate resource tag and pathname. The addition of 2775this support brings the disassembled code very close to the original ASL 2776source code and helps eliminate run-time errors when the disassembled code 2777is modified (and recompiled) in such a way as to invalidate the original 2778fixed offsets. 2779 2780Implemented support for a Descriptor Name as the last parameter to the ASL 2781Register() macro. This parameter was inadvertently left out of the ACPI 2782specification, and will be added for ACPI 3.0b. 2783 2784Fixed a problem where the use of the "_OSI" string (versus the full path 2785"\_OSI") caused an internal compiler error. ("No back ptr to op") 2786 2787Fixed a problem with the error message that occurs when an invalid string is 2788used for a _HID object (such as one with an embedded asterisk: "*PNP010A".) 2789The correct message is now displayed. 2790 2791---------------------------------------- 279217 February 2006. Summary of changes for version 20060217: 2793 27941) ACPI CA Core Subsystem: 2795 2796Implemented a change to the IndexField support to match the behavior of the 2797Microsoft AML interpreter. The value written to the Index register is now a 2798byte offset, no longer an index based upon the width of the Data register. 2799This should fix IndexField problems seen on some machines where the Data 2800register is not exactly one byte wide. The ACPI specification will be 2801clarified on this point. 2802 2803Fixed a problem where several resource descriptor types could overrun the 2804internal descriptor buffer due to size miscalculation: VendorShort, 2805VendorLong, and Interrupt. This was noticed on IA64 machines, but could 2806affect all platforms. 2807 2808Fixed a problem where individual resource descriptors were misaligned within 2809the internal buffer, causing alignment faults on IA64 platforms. 2810 2811Code and Data Size: These are the sizes for the acpica.lib produced by the 2812Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 2813driver or OSPM code. The debug version of the code includes the debug output 2814trace mechanism and has a much larger code and data size. Note that these 2815values will vary depending on the efficiency of the compiler and the 2816compiler options used during generation. 2817 2818 Previous Release: 2819 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 2820 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 2821 Current Release: 2822 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 2823 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 2824 2825 28262) iASL Compiler/Disassembler: 2827 2828Implemented support for new reserved names: _WDG and _WED are Microsoft 2829extensions for Windows Instrumentation Management, _TDL is a new ACPI- 2830defined method (Throttling Depth Limit.) 2831 2832Fixed a problem where a zero-length VendorShort or VendorLong resource 2833descriptor was incorrectly emitted as a descriptor of length one. 2834 2835---------------------------------------- 283610 February 2006. Summary of changes for version 20060210: 2837 28381) ACPI CA Core Subsystem: 2839 2840Removed a couple of extraneous ACPI_ERROR messages that appeared during 2841normal execution. These became apparent after the conversion from 2842ACPI_DEBUG_PRINT. 2843 2844Fixed a problem where the CreateField operator could hang if the BitIndex or 2845NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359) 2846 2847Fixed a problem where a DeRefOf operation on a buffer object incorrectly 2848failed with an exception. This also fixes a couple of related RefOf and 2849DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387) 2850 2851Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead of 2852AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, BZ 28535480) 2854 2855Implemented a memory cleanup at the end of the execution of each iteration 2856of an AML While() loop, preventing the accumulation of outstanding objects. 2857(Valery Podrezov, BZ 5427) 2858 2859Eliminated a chunk of duplicate code in the object resolution code. (Valery 2860Podrezov, BZ 5336) 2861 2862Fixed several warnings during the 64-bit code generation. 2863 2864The AcpiSrc source code conversion tool now inserts one line of whitespace 2865after an if() statement that is followed immediately by a comment, improving 2866readability of the Linux code. 2867 2868Code and Data Size: The current and previous library sizes for the core 2869subsystem are shown below. These are the code and data sizes for the 2870acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 2871values do not include any ACPI driver or OSPM code. The debug version of the 2872code includes the debug output trace mechanism and has a much larger code 2873and data size. Note that these values will vary depending on the efficiency 2874of the compiler and the compiler options used during generation. 2875 2876 Previous Release: 2877 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 2878 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 2879 Current Release: 2880 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 2881 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 2882 2883 28842) iASL Compiler/Disassembler: 2885 2886Fixed a problem with the disassembly of a BankField operator with a complex 2887expression for the BankValue parameter. 2888 2889---------------------------------------- 289027 January 2006. Summary of changes for version 20060127: 2891 28921) ACPI CA Core Subsystem: 2893 2894Implemented support in the Resource Manager to allow unresolved namestring 2895references within resource package objects for the _PRT method. This support 2896is in addition to the previously implemented unresolved reference support 2897within the AML parser. If the interpreter slack mode is enabled, these 2898unresolved references will be passed through to the caller as a NULL package 2899entry. 2900 2901Implemented and deployed new macros and functions for error and warning 2902messages across the subsystem. These macros are simpler and generate less 2903code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION, 2904ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older 2905macros remain defined to allow ACPI drivers time to migrate to the new 2906macros. 2907 2908Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of the 2909Acquire/Release Lock OSL interfaces. 2910 2911Fixed a problem where Alias ASL operators are sometimes not correctly 2912resolved, in both the interpreter and the iASL compiler. 2913 2914Fixed several problems with the implementation of the ConcatenateResTemplate 2915ASL operator. As per the ACPI specification, zero length buffers are now 2916treated as a single EndTag. One-length buffers always cause a fatal 2917exception. Non-zero length buffers that do not end with a full 2-byte EndTag 2918cause a fatal exception. 2919 2920Fixed a possible structure overwrite in the AcpiGetObjectInfo external 2921interface. (With assistance from Thomas Renninger) 2922 2923Code and Data Size: The current and previous library sizes for the core 2924subsystem are shown below. These are the code and data sizes for the 2925acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 2926values do not include any ACPI driver or OSPM code. The debug version of the 2927code includes the debug output trace mechanism and has a much larger code 2928and data size. Note that these values will vary depending on the efficiency 2929of the compiler and the compiler options used during generation. 2930 2931 Previous Release: 2932 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 2933 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 2934 Current Release: 2935 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 2936 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 2937 2938 29392) iASL Compiler/Disassembler: 2940 2941Fixed an internal error that was generated for any forward references to ASL 2942Alias objects. 2943 2944---------------------------------------- 294513 January 2006. Summary of changes for version 20060113: 2946 29471) ACPI CA Core Subsystem: 2948 2949Added 2006 copyright to all module headers and signons. This affects 2950virtually every file in the ACPICA core subsystem, iASL compiler, and the 2951utilities. 2952 2953Enhanced the ACPICA error reporting in order to simplify user migration to 2954the non-debug version of ACPICA. Replaced all instances of the 2955ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN debug 2956levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros, 2957respectively. This preserves all error and warning messages in the non-debug 2958version of the ACPICA code (this has been referred to as the "debug lite" 2959option.) Over 200 cases were converted to create a total of over 380 2960error/warning messages across the ACPICA code. This increases the code and 2961data size of the default non-debug version of the code somewhat (about 13K), 2962but all error/warning reporting may be disabled if desired (and code 2963eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time 2964configuration option. The size of the debug version of ACPICA remains about 2965the same. 2966 2967Fixed a memory leak within the AML Debugger "Set" command. One object was 2968not properly deleted for every successful invocation of the command. 2969 2970Code and Data Size: The current and previous library sizes for the core 2971subsystem are shown below. These are the code and data sizes for the 2972acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 2973values do not include any ACPI driver or OSPM code. The debug version of the 2974code includes the debug output trace mechanism and has a much larger code 2975and data size. Note that these values will vary depending on the efficiency 2976of the compiler and the compiler options used during generation. 2977 2978 Previous Release: 2979 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 2980 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 2981 Current Release: 2982 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 2983 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 2984 2985 29862) iASL Compiler/Disassembler: 2987 2988The compiler now officially supports the ACPI 3.0a specification that was 2989released on December 30, 2005. (Specification is available at www.acpi.info) 2990 2991---------------------------------------- 299216 December 2005. Summary of changes for version 20051216: 2993 29941) ACPI CA Core Subsystem: 2995 2996Implemented optional support to allow unresolved names within ASL Package 2997objects. A null object is inserted in the package when a named reference 2998cannot be located in the current namespace. Enabled via the interpreter 2999slack flag, this should eliminate AE_NOT_FOUND exceptions seen on machines 3000that contain such code. 3001 3002Implemented an optimization to the initialization sequence that can improve 3003boot time. During ACPI device initialization, the _STA method is now run if 3004and only if the _INI method exists. The _STA method is used to determine if 3005the device is present; An _INI can only be run if _STA returns present, but 3006it is a waste of time to run the _STA method if the _INI does not exist. 3007(Prototype and assistance from Dong Wei) 3008 3009Implemented use of the C99 uintptr_t for the pointer casting macros if it is 3010available in the current compiler. Otherwise, the default (void *) cast is 3011used as before. 3012 3013Fixed some possible memory leaks found within the execution path of the 3014Break, Continue, If, and CreateField operators. (Valery Podrezov) 3015 3016Fixed a problem introduced in the 20051202 release where an exception is 3017generated during method execution if a control method attempts to declare 3018another method. 3019 3020Moved resource descriptor string constants that are used by both the AML 3021disassembler and AML debugger to the common utilities directory so that 3022these components are independent. 3023 3024Implemented support in the AcpiExec utility (-e switch) to globally ignore 3025exceptions during control method execution (method is not aborted.) 3026 3027Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix 3028generation. 3029 3030Code and Data Size: The current and previous library sizes for the core 3031subsystem are shown below. These are the code and data sizes for the 3032acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3033values do not include any ACPI driver or OSPM code. The debug version of the 3034code includes the debug output trace mechanism and has a much larger code 3035and data size. Note that these values will vary depending on the efficiency 3036of the compiler and the compiler options used during generation. 3037 3038 Previous Release: 3039 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 3040 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 3041 Current Release: 3042 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 3043 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 3044 3045 30462) iASL Compiler/Disassembler: 3047 3048Fixed a problem where a CPU stack overflow fault could occur if a recursive 3049method call was made from within a Return statement. 3050 3051---------------------------------------- 305202 December 2005. Summary of changes for version 20051202: 3053 30541) ACPI CA Core Subsystem: 3055 3056Modified the parsing of control methods to no longer create namespace 3057objects during the first pass of the parse. Objects are now created only 3058during the execute phase, at the moment the namespace creation operator is 3059encountered in the AML (Name, OperationRegion, CreateByteField, etc.) This 3060should eliminate ALREADY_EXISTS exceptions seen on some machines where 3061reentrant control methods are protected by an AML mutex. The mutex will now 3062correctly block multiple threads from attempting to create the same object 3063more than once. 3064 3065Increased the number of available Owner Ids for namespace object tracking 3066from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen on 3067some machines with a large number of ACPI tables (either static or dynamic). 3068 3069Fixed a problem with the AcpiExec utility where a fault could occur when the 3070-b switch (batch mode) is used. 3071 3072Enhanced the namespace dump routine to output the owner ID for each 3073namespace object. 3074 3075Code and Data Size: The current and previous library sizes for the core 3076subsystem are shown below. These are the code and data sizes for the 3077acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3078values do not include any ACPI driver or OSPM code. The debug version of the 3079code includes the debug output trace mechanism and has a much larger code 3080and data size. Note that these values will vary depending on the efficiency 3081of the compiler and the compiler options used during generation. 3082 3083 Previous Release: 3084 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 3085 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 3086 Current Release: 3087 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 3088 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 3089 3090 30912) iASL Compiler/Disassembler: 3092 3093Fixed a parse error during compilation of certain Switch/Case constructs. To 3094simplify the parse, the grammar now allows for multiple Default statements 3095and this error is now detected and flagged during the analysis phase. 3096 3097Disassembler: The disassembly now includes the contents of the original 3098table header within a comment at the start of the file. This includes the 3099name and version of the original ASL compiler. 3100 3101---------------------------------------- 310217 November 2005. Summary of changes for version 20051117: 3103 31041) ACPI CA Core Subsystem: 3105 3106Fixed a problem in the AML parser where the method thread count could be 3107decremented below zero if any errors occurred during the method parse phase. 3108This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some machines. 3109This also fixed a related regression with the mechanism that detects and 3110corrects methods that cannot properly handle reentrancy (related to the 3111deployment of the new OwnerId mechanism.) 3112 3113Eliminated the pre-parsing of control methods (to detect errors) during 3114table load. Related to the problem above, this was causing unwind issues if 3115any errors occurred during the parse, and it seemed to be overkill. A table 3116load should not be aborted if there are problems with any single control 3117method, thus rendering this feature rather pointless. 3118 3119Fixed a problem with the new table-driven resource manager where an internal 3120buffer overflow could occur for small resource templates. 3121 3122Implemented a new external interface, AcpiGetVendorResource. This interface 3123will find and return a vendor-defined resource descriptor within a _CRS or 3124_PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn Helgaas. 3125 3126Removed the length limit (200) on string objects as per the upcoming ACPI 31273.0A specification. This affects the following areas of the interpreter: 1) 3128any implicit conversion of a Buffer to a String, 2) a String object result 3129of the ASL Concatentate operator, 3) the String object result of the ASL 3130ToString operator. 3131 3132Fixed a problem in the Windows OS interface layer (OSL) where a WAIT_FOREVER 3133on a semaphore object would incorrectly timeout. This allows the 3134multithreading features of the AcpiExec utility to work properly under 3135Windows. 3136 3137Updated the Linux makefiles for the iASL compiler and AcpiExec to include 3138the recently added file named "utresrc.c". 3139 3140Code and Data Size: The current and previous library sizes for the core 3141subsystem are shown below. These are the code and data sizes for the 3142acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3143values do not include any ACPI driver or OSPM code. The debug version of the 3144code includes the debug output trace mechanism and has a much larger code 3145and data size. Note that these values will vary depending on the efficiency 3146of the compiler and the compiler options used during generation. 3147 3148 Previous Release: 3149 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 3150 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 3151 Current Release: 3152 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 3153 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 3154 3155 31562) iASL Compiler/Disassembler: 3157 3158Removed the limit (200) on string objects as per the upcoming ACPI 3.0A 3159specification. For the iASL compiler, this means that string literals within 3160the source ASL can be of any length. 3161 3162Enhanced the listing output to dump the AML code for resource descriptors 3163immediately after the ASL code for each descriptor, instead of in a block at 3164the end of the entire resource template. 3165 3166Enhanced the compiler debug output to dump the entire original parse tree 3167constructed during the parse phase, before any transforms are applied to the 3168tree. The transformed tree is dumped also. 3169 3170---------------------------------------- 317102 November 2005. Summary of changes for version 20051102: 3172 31731) ACPI CA Core Subsystem: 3174 3175Modified the subsystem initialization sequence to improve GPE support. The 3176GPE initialization has been split into two parts in order to defer execution 3177of the _PRW methods (Power Resources for Wake) until after the hardware is 3178fully initialized and the SCI handler is installed. This allows the _PRW 3179methods to access fields protected by the Global Lock. This will fix systems 3180where a NO_GLOBAL_LOCK exception has been seen during initialization. 3181 3182Converted the ACPI internal object disassemble and display code within the 3183AML debugger to fully table-driven operation, reducing code size and 3184increasing maintainability. 3185 3186Fixed a regression with the ConcatenateResTemplate() ASL operator introduced 3187in the 20051021 release. 3188 3189Implemented support for "local" internal ACPI object types within the 3190debugger "Object" command and the AcpiWalkNamespace external interfaces. 3191These local types include RegionFields, BankFields, IndexFields, Alias, and 3192reference objects. 3193 3194Moved common AML resource handling code into a new file, "utresrc.c". This 3195code is shared by both the Resource Manager and the AML Debugger. 3196 3197Code and Data Size: The current and previous library sizes for the core 3198subsystem are shown below. These are the code and data sizes for the 3199acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3200values do not include any ACPI driver or OSPM code. The debug version of the 3201code includes the debug output trace mechanism and has a much larger code 3202and data size. Note that these values will vary depending on the efficiency 3203of the compiler and the compiler options used during generation. 3204 3205 Previous Release: 3206 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 3207 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 3208 Current Release: 3209 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 3210 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 3211 3212 32132) iASL Compiler/Disassembler: 3214 3215Fixed a problem with very large initializer lists (more than 4000 elements) 3216for both Buffer and Package objects where the parse stack could overflow. 3217 3218Enhanced the pre-compile source code scan for non-ASCII characters to ignore 3219characters within comment fields. The scan is now always performed and is no 3220longer optional, detecting invalid characters within a source file 3221immediately rather than during the parse phase or later. 3222 3223Enhanced the ASL grammar definition to force early reductions on all list- 3224style grammar elements so that the overall parse stack usage is greatly 3225reduced. This should improve performance and reduce the possibility of parse 3226stack overflow. 3227 3228Eliminated all reduce/reduce conflicts in the iASL parser generation. Also, 3229with the addition of a %expected statement, the compiler generates from 3230source with no warnings. 3231 3232Fixed a possible segment fault in the disassembler if the input filename 3233does not contain a "dot" extension (Thomas Renninger). 3234 3235---------------------------------------- 323621 October 2005. Summary of changes for version 20051021: 3237 32381) ACPI CA Core Subsystem: 3239 3240Implemented support for the EM64T and other x86-64 processors. This 3241essentially entails recognizing that these processors support non-aligned 3242memory transfers. Previously, all 64-bit processors were assumed to lack 3243hardware support for non-aligned transfers. 3244 3245Completed conversion of the Resource Manager to nearly full table-driven 3246operation. Specifically, the resource conversion code (convert AML to 3247internal format and the reverse) and the debug code to dump internal 3248resource descriptors are fully table-driven, reducing code and data size and 3249improving maintainability. 3250 3251The OSL interfaces for Acquire and Release Lock now use a 64-bit flag word 3252on 64-bit processors instead of a fixed 32-bit word. (With assistance from 3253Alexey Starikovskiy) 3254 3255Implemented support within the resource conversion code for the Type- 3256Specific byte within the various ACPI 3.0 *WordSpace macros. 3257 3258Fixed some issues within the resource conversion code for the type-specific 3259flags for both Memory and I/O address resource descriptors. For Memory, 3260implemented support for the MTP and TTP flags. For I/O, split the TRS and 3261TTP flags into two separate fields. 3262 3263Code and Data Size: The current and previous library sizes for the core 3264subsystem are shown below. These are the code and data sizes for the 3265acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3266values do not include any ACPI driver or OSPM code. The debug version of the 3267code includes the debug output trace mechanism and has a much larger code 3268and data size. Note that these values will vary depending on the efficiency 3269of the compiler and the compiler options used during generation. 3270 3271 Previous Release: 3272 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 3273 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 3274 Current Release: 3275 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 3276 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 3277 3278 3279 32802) iASL Compiler/Disassembler: 3281 3282Relaxed a compiler restriction that disallowed a ResourceIndex byte if the 3283corresponding ResourceSource string was not also present in a resource 3284descriptor declaration. This restriction caused problems with existing 3285AML/ASL code that includes the Index byte without the string. When such AML 3286was disassembled, it could not be compiled without modification. Further, 3287the modified code created a resource template with a different size than the 3288original, breaking code that used fixed offsets into the resource template 3289buffer. 3290 3291Removed a recent feature of the disassembler to ignore a lone ResourceIndex 3292byte. This byte is now emitted if present so that the exact AML can be 3293reproduced when the disassembled code is recompiled. 3294 3295Improved comments and text alignment for the resource descriptor code 3296emitted by the disassembler. 3297 3298Implemented disassembler support for the ACPI 3.0 AccessSize field within a 3299Register() resource descriptor. 3300 3301---------------------------------------- 330230 September 2005. Summary of changes for version 20050930: 3303 33041) ACPI CA Core Subsystem: 3305 3306Completed a major overhaul of the Resource Manager code - specifically, 3307optimizations in the area of the AML/internal resource conversion code. The 3308code has been optimized to simplify and eliminate duplicated code, CPU stack 3309use has been decreased by optimizing function parameters and local 3310variables, and naming conventions across the manager have been standardized 3311for clarity and ease of maintenance (this includes function, parameter, 3312variable, and struct/typedef names.) The update may force changes in some 3313driver code, depending on how resources are handled by the host OS. 3314 3315All Resource Manager dispatch and information tables have been moved to a 3316single location for clarity and ease of maintenance. One new file was 3317created, named "rsinfo.c". 3318 3319The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to 3320guarantee that the argument is not evaluated twice, making them less prone 3321to macro side-effects. However, since there exists the possibility of 3322additional stack use if a particular compiler cannot optimize them (such as 3323in the debug generation case), the original macros are optionally available. 3324Note that some invocations of the return_VALUE macro may now cause size 3325mismatch warnings; the return_UINT8 and return_UINT32 macros are provided to 3326eliminate these. (From Randy Dunlap) 3327 3328Implemented a new mechanism to enable debug tracing for individual control 3329methods. A new external interface, AcpiDebugTrace, is provided to enable 3330this mechanism. The intent is to allow the host OS to easily enable and 3331disable tracing for problematic control methods. This interface can be 3332easily exposed to a user or debugger interface if desired. See the file 3333psxface.c for details. 3334 3335AcpiUtCallocate will now return a valid pointer if a length of zero is 3336specified - a length of one is used and a warning is issued. This matches 3337the behavior of AcpiUtAllocate. 3338 3339Code and Data Size: The current and previous library sizes for the core 3340subsystem are shown below. These are the code and data sizes for the 3341acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3342values do not include any ACPI driver or OSPM code. The debug version of the 3343code includes the debug output trace mechanism and has a much larger code 3344and data size. Note that these values will vary depending on the efficiency 3345of the compiler and the compiler options used during generation. 3346 3347 Previous Release: 3348 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 3349 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 3350 Current Release: 3351 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 3352 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 3353 3354 33552) iASL Compiler/Disassembler: 3356 3357A remark is issued if the effective compile-time length of a package or 3358buffer is zero. Previously, this was a warning. 3359 3360---------------------------------------- 336116 September 2005. Summary of changes for version 20050916: 3362 33631) ACPI CA Core Subsystem: 3364 3365Fixed a problem within the Resource Manager where support for the Generic 3366Register descriptor was not fully implemented. This descriptor is now fully 3367recognized, parsed, disassembled, and displayed. 3368 3369Completely restructured the Resource Manager code to utilize table-driven 3370dispatch and lookup, eliminating many of the large switch() statements. This 3371reduces overall subsystem code size and code complexity. Affects the 3372resource parsing and construction, disassembly, and debug dump output. 3373 3374Cleaned up and restructured the debug dump output for all resource 3375descriptors. Improved readability of the output and reduced code size. 3376 3377Fixed a problem where changes to internal data structures caused the 3378optional ACPI_MUTEX_DEBUG code to fail compilation if specified. 3379 3380Code and Data Size: The current and previous library sizes for the core 3381subsystem are shown below. These are the code and data sizes for the 3382acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3383values do not include any ACPI driver or OSPM code. The debug version of the 3384code includes the debug output trace mechanism and has a much larger code 3385and data size. Note that these values will vary depending on the efficiency 3386of the compiler and the compiler options used during generation. 3387 3388 Previous Release: 3389 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 3390 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 3391 Current Release: 3392 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 3393 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 3394 3395 33962) iASL Compiler/Disassembler: 3397 3398Updated the disassembler to automatically insert an EndDependentFn() macro 3399into the ASL stream if this macro is missing in the original AML code, 3400simplifying compilation of the resulting ASL module. 3401 3402Fixed a problem in the disassembler where a disassembled ResourceSource 3403string (within a large resource descriptor) was not surrounded by quotes and 3404not followed by a comma, causing errors when the resulting ASL module was 3405compiled. Also, escape sequences within a ResourceSource string are now 3406handled correctly (especially "\\") 3407 3408---------------------------------------- 340902 September 2005. Summary of changes for version 20050902: 3410 34111) ACPI CA Core Subsystem: 3412 3413Fixed a problem with the internal Owner ID allocation and deallocation 3414mechanisms for control method execution and recursive method invocation. 3415This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId" 3416messages seen on some systems. Recursive method invocation depth is 3417currently limited to 255. (Alexey Starikovskiy) 3418 3419Completely eliminated all vestiges of support for the "module-level 3420executable code" until this support is fully implemented and debugged. This 3421should eliminate the NO_RETURN_VALUE exceptions seen during table load on 3422some systems that invoke this support. 3423 3424Fixed a problem within the resource manager code where the transaction flags 3425for a 64-bit address descriptor were handled incorrectly in the type- 3426specific flag byte. 3427 3428Consolidated duplicate code within the address descriptor resource manager 3429code, reducing overall subsystem code size. 3430 3431Fixed a fault when using the AML debugger "disassemble" command to 3432disassemble individual control methods. 3433 3434Removed references to the "release_current" directory within the Unix 3435release package. 3436 3437Code and Data Size: The current and previous core subsystem library sizes 3438are shown below. These are the code and data sizes for the acpica.lib 3439produced by the Microsoft Visual C++ 6.0 compiler. These values do not 3440include any ACPI driver or OSPM code. The debug version of the code includes 3441the debug output trace mechanism and has a much larger code and data size. 3442Note that these values will vary depending on the efficiency of the compiler 3443and the compiler options used during generation. 3444 3445 Previous Release: 3446 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 3447 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 3448 Current Release: 3449 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 3450 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 3451 3452 34532) iASL Compiler/Disassembler: 3454 3455Implemented an error check for illegal duplicate values in the interrupt and 3456dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and 3457Interrupt(). 3458 3459Implemented error checking for the Irq() and IrqNoFlags() macros to detect 3460too many values in the interrupt list (16 max) and invalid values in the 3461list (range 0 - 15) 3462 3463The maximum length string literal within an ASL file is now restricted to 3464200 characters as per the ACPI specification. 3465 3466Fixed a fault when using the -ln option (generate namespace listing). 3467 3468Implemented an error check to determine if a DescriptorName within a 3469resource descriptor has already been used within the current scope. 3470 3471---------------------------------------- 347215 August 2005. Summary of changes for version 20050815: 3473 34741) ACPI CA Core Subsystem: 3475 3476Implemented a full bytewise compare to determine if a table load request is 3477attempting to load a duplicate table. The compare is performed if the table 3478signatures and table lengths match. This will allow different tables with 3479the same OEM Table ID and revision to be loaded - probably against the ACPI 3480specification, but discovered in the field nonetheless. 3481 3482Added the changes.txt logfile to each of the zipped release packages. 3483 3484Code and Data Size: Current and previous core subsystem library sizes are 3485shown below. These are the code and data sizes for the acpica.lib produced 3486by the Microsoft Visual C++ 6.0 compiler, and these values do not include 3487any ACPI driver or OSPM code. The debug version of the code includes the 3488debug output trace mechanism and has a much larger code and data size. Note 3489that these values will vary depending on the efficiency of the compiler and 3490the compiler options used during generation. 3491 3492 Previous Release: 3493 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 3494 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 3495 Current Release: 3496 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 3497 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 3498 3499 35002) iASL Compiler/Disassembler: 3501 3502Fixed a problem where incorrect AML code could be generated for Package 3503objects if optimization is disabled (via the -oa switch). 3504 3505Fixed a problem with where incorrect AML code is generated for variable- 3506length packages when the package length is not specified and the number of 3507initializer values is greater than 255. 3508 3509 3510---------------------------------------- 351129 July 2005. Summary of changes for version 20050729: 3512 35131) ACPI CA Core Subsystem: 3514 3515Implemented support to ignore an attempt to install/load a particular ACPI 3516table more than once. Apparently there exists BIOS code that repeatedly 3517attempts to load the same SSDT upon certain events. With assistance from 3518Venkatesh Pallipadi. 3519 3520Restructured the main interface to the AML parser in order to correctly 3521handle all exceptional conditions. This will prevent leakage of the OwnerId 3522resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on some 3523machines. With assistance from Alexey Starikovskiy. 3524 3525Support for "module level code" has been disabled in this version due to a 3526number of issues that have appeared on various machines. The support can be 3527enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem 3528compilation. When the issues are fully resolved, the code will be enabled by 3529default again. 3530 3531Modified the internal functions for debug print support to define the 3532FunctionName parameter as a (const char *) for compatibility with compiler 3533built-in macros such as __FUNCTION__, etc. 3534 3535Linted the entire ACPICA source tree for both 32-bit and 64-bit. 3536 3537Implemented support to display an object count summary for the AML Debugger 3538commands Object and Methods. 3539 3540Code and Data Size: Current and previous core subsystem library sizes are 3541shown below. These are the code and data sizes for the acpica.lib produced 3542by the Microsoft Visual C++ 6.0 compiler, and these values do not include 3543any ACPI driver or OSPM code. The debug version of the code includes the 3544debug output trace mechanism and has a much larger code and data size. Note 3545that these values will vary depending on the efficiency of the compiler and 3546the compiler options used during generation. 3547 3548 Previous Release: 3549 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 3550 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 3551 Current Release: 3552 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 3553 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 3554 3555 35562) iASL Compiler/Disassembler: 3557 3558Fixed a regression that appeared in the 20050708 version of the compiler 3559where an error message was inadvertently emitted for invocations of the _OSI 3560reserved control method. 3561 3562---------------------------------------- 356308 July 2005. Summary of changes for version 20050708: 3564 35651) ACPI CA Core Subsystem: 3566 3567The use of the CPU stack in the debug version of the subsystem has been 3568considerably reduced. Previously, a debug structure was declared in every 3569function that used the debug macros. This structure has been removed in 3570favor of declaring the individual elements as parameters to the debug 3571functions. This reduces the cumulative stack use during nested execution of 3572ACPI function calls at the cost of a small increase in the code size of the 3573debug version of the subsystem. With assistance from Alexey Starikovskiy and 3574Len Brown. 3575 3576Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent 3577headers to define a macro that will return the current function name at 3578runtime (such as __FUNCTION__ or _func_, etc.) The function name is used by 3579the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the 3580compiler-dependent header, the function name is saved on the CPU stack (one 3581pointer per function.) This mechanism is used because apparently there 3582exists no standard ANSI-C defined macro that that returns the function name. 3583 3584Redesigned and reimplemented the "Owner ID" mechanism used to track 3585namespace objects created/deleted by ACPI tables and control method 3586execution. A bitmap is now used to allocate and free the IDs, thus solving 3587the wraparound problem present in the previous implementation. The size of 3588the namespace node descriptor was reduced by 2 bytes as a result (Alexey 3589Starikovskiy). 3590 3591Removed the UINT32_BIT and UINT16_BIT types that were used for the bitfield 3592flag definitions within the headers for the predefined ACPI tables. These 3593have been replaced by UINT8_BIT in order to increase the code portability of 3594the subsystem. If the use of UINT8 remains a problem, we may be forced to 3595eliminate bitfields entirely because of a lack of portability. 3596 3597Enhanced the performance of the AcpiUtUpdateObjectReference procedure. This 3598is a frequently used function and this improvement increases the performance 3599of the entire subsystem (Alexey Starikovskiy). 3600 3601Fixed several possible memory leaks and the inverse - premature object 3602deletion (Alexey Starikovskiy). 3603 3604Code and Data Size: Current and previous core subsystem library sizes are 3605shown below. These are the code and data sizes for the acpica.lib produced 3606by the Microsoft Visual C++ 6.0 compiler, and these values do not include 3607any ACPI driver or OSPM code. The debug version of the code includes the 3608debug output trace mechanism and has a much larger code and data size. Note 3609that these values will vary depending on the efficiency of the compiler and 3610the compiler options used during generation. 3611 3612 Previous Release: 3613 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 3614 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 3615 Current Release: 3616 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 3617 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 3618 3619---------------------------------------- 362024 June 2005. Summary of changes for version 20050624: 3621 36221) ACPI CA Core Subsystem: 3623 3624Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for 3625the host-defined cache object. This allows the OSL implementation to define 3626and type this object in any manner desired, simplifying the OSL 3627implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for 3628Linux, and should be defined in the OS-specific header file for other 3629operating systems as required. 3630 3631Changed the interface to AcpiOsAcquireObject to directly return the 3632requested object as the function return (instead of ACPI_STATUS.) This 3633change was made for performance reasons, since this is the purpose of the 3634interface in the first place. AcpiOsAcquireObject is now similar to the 3635AcpiOsAllocate interface. 3636 3637Implemented a new AML debugger command named Businfo. This command displays 3638information about all devices that have an associate _PRT object. The _ADR, 3639_HID, _UID, and _CID are displayed for these devices. 3640 3641Modified the initialization sequence in AcpiInitializeSubsystem to call the 3642OSL interface AcpiOslInitialize first, before any local initialization. This 3643change was required because the global initialization now calls OSL 3644interfaces. 3645 3646Enhanced the Dump command to display the entire contents of Package objects 3647(including all sub-objects and their values.) 3648 3649Restructured the code base to split some files because of size and/or 3650because the code logically belonged in a separate file. New files are listed 3651below. All makefiles and project files included in the ACPI CA release have 3652been updated. 3653 utilities/utcache.c /* Local cache interfaces */ 3654 utilities/utmutex.c /* Local mutex support */ 3655 utilities/utstate.c /* State object support */ 3656 interpreter/parser/psloop.c /* Main AML parse loop */ 3657 3658Code and Data Size: Current and previous core subsystem library sizes are 3659shown below. These are the code and data sizes for the acpica.lib produced 3660by the Microsoft Visual C++ 6.0 compiler, and these values do not include 3661any ACPI driver or OSPM code. The debug version of the code includes the 3662debug output trace mechanism and has a much larger code and data size. Note 3663that these values will vary depending on the efficiency of the compiler and 3664the compiler options used during generation. 3665 3666 Previous Release: 3667 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 3668 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 3669 Current Release: 3670 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 3671 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 3672 3673 36742) iASL Compiler/Disassembler: 3675 3676Fixed a regression introduced in version 20050513 where the use of a Package 3677object within a Case() statement caused a compile time exception. The 3678original behavior has been restored (a Match() operator is emitted.) 3679 3680---------------------------------------- 368117 June 2005. Summary of changes for version 20050617: 3682 36831) ACPI CA Core Subsystem: 3684 3685Moved the object cache operations into the OS interface layer (OSL) to allow 3686the host OS to handle these operations if desired (for example, the Linux 3687OSL will invoke the slab allocator). This support is optional; the compile 3688time define ACPI_USE_LOCAL_CACHE may be used to utilize the original cache 3689code in the ACPI CA core. The new OSL interfaces are shown below. See 3690utalloc.c for an example implementation, and acpiosxf.h for the exact 3691interface definitions. With assistance from Alexey Starikovskiy. 3692 AcpiOsCreateCache 3693 AcpiOsDeleteCache 3694 AcpiOsPurgeCache 3695 AcpiOsAcquireObject 3696 AcpiOsReleaseObject 3697 3698Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to return 3699and restore a flags parameter. This fits better with many OS lock models. 3700Note: the current execution state (interrupt handler or not) is no longer 3701passed to these interfaces. If necessary, the OSL must determine this state 3702by itself, a simple and fast operation. With assistance from Alexey 3703Starikovskiy. 3704 3705Fixed a problem in the ACPI table handling where a valid XSDT was assumed 3706present if the revision of the RSDP was 2 or greater. According to the ACPI 3707specification, the XSDT is optional in all cases, and the table manager 3708therefore now checks for both an RSDP >=2 and a valid XSDT pointer. 3709Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs contain 3710only the RSDT. 3711 3712Fixed an interpreter problem with the Mid() operator in the case of an input 3713string where the resulting output string is of zero length. It now correctly 3714returns a valid, null terminated string object instead of a string object 3715with a null pointer. 3716 3717Fixed a problem with the control method argument handling to allow a store 3718to an Arg object that already contains an object of type Device. The Device 3719object is now correctly overwritten. Previously, an error was returned. 3720 3721 3722Enhanced the debugger Find command to emit object values in addition to the 3723found object pathnames. The output format is the same as the dump namespace 3724command. 3725 3726Enhanced the debugger Set command. It now has the ability to set the value 3727of any Named integer object in the namespace (Previously, only method locals 3728and args could be set.) 3729 3730Code and Data Size: Current and previous core subsystem library sizes are 3731shown below. These are the code and data sizes for the acpica.lib produced 3732by the Microsoft Visual C++ 6.0 compiler, and these values do not include 3733any ACPI driver or OSPM code. The debug version of the code includes the 3734debug output trace mechanism and has a much larger code and data size. Note 3735that these values will vary depending on the efficiency of the compiler and 3736the compiler options used during generation. 3737 3738 Previous Release: 3739 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 3740 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 3741 Current Release: 3742 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 3743 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 3744 3745 37462) iASL Compiler/Disassembler: 3747 3748Fixed a regression in the disassembler where if/else/while constructs were 3749output incorrectly. This problem was introduced in the previous release 3750(20050526). This problem also affected the single-step disassembly in the 3751debugger. 3752 3753Fixed a problem where compiling the reserved _OSI method would randomly (but 3754rarely) produce compile errors. 3755 3756Enhanced the disassembler to emit compilable code in the face of incorrect 3757AML resource descriptors. If the optional ResourceSourceIndex is present, 3758but the ResourceSource is not, do not emit the ResourceSourceIndex in the 3759disassembly. Otherwise, the resulting code cannot be compiled without 3760errors. 3761 3762---------------------------------------- 376326 May 2005. Summary of changes for version 20050526: 3764 37651) ACPI CA Core Subsystem: 3766 3767Implemented support to execute Type 1 and Type 2 AML opcodes appearing at 3768the module level (not within a control method.) These opcodes are executed 3769exactly once at the time the table is loaded. This type of code was legal up 3770until the release of ACPI 2.0B (2002) and is now supported within ACPI CA in 3771order to provide backwards compatibility with earlier BIOS implementations. 3772This eliminates the "Encountered executable code at module level" warning 3773that was previously generated upon detection of such code. 3774 3775Fixed a problem in the interpreter where an AE_NOT_FOUND exception could 3776inadvertently be generated during the lookup of namespace objects in the 3777second pass parse of ACPI tables and control methods. It appears that this 3778problem could occur during the resolution of forward references to namespace 3779objects. 3780 3781Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function, 3782corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This 3783allows the deadlock detection debug code to be compiled out in the normal 3784case, improving mutex performance (and overall subsystem performance) 3785considerably. 3786 3787Implemented a handful of miscellaneous fixes for possible memory leaks on 3788error conditions and error handling control paths. These fixes were 3789suggested by FreeBSD and the Coverity Prevent source code analysis tool. 3790 3791Added a check for a null RSDT pointer in AcpiGetFirmwareTable (tbxfroot.c) 3792to prevent a fault in this error case. 3793 3794Code and Data Size: Current and previous core subsystem library sizes are 3795shown below. These are the code and data sizes for the acpica.lib produced 3796by the Microsoft Visual C++ 6.0 compiler, and these values do not include 3797any ACPI driver or OSPM code. The debug version of the code includes the 3798debug output trace mechanism and has a much larger code and data size. Note 3799that these values will vary depending on the efficiency of the compiler and 3800the compiler options used during generation. 3801 3802 Previous Release: 3803 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 3804 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 3805 Current Release: 3806 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 3807 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 3808 3809 38102) iASL Compiler/Disassembler: 3811 3812Implemented support to allow Type 1 and Type 2 ASL operators to appear at 3813the module level (not within a control method.) These operators will be 3814executed once at the time the table is loaded. This type of code was legal 3815up until the release of ACPI 2.0B (2002) and is now supported by the iASL 3816compiler in order to provide backwards compatibility with earlier BIOS ASL 3817code. 3818 3819The ACPI integer width (specified via the table revision ID or the -r 3820override, 32 or 64 bits) is now used internally during compile-time constant 3821folding to ensure that constants are truncated to 32 bits if necessary. 3822Previously, the revision ID value was only emitted in the AML table header. 3823 3824An error message is now generated for the Mutex and Method operators if the 3825SyncLevel parameter is outside the legal range of 0 through 15. 3826 3827Fixed a problem with the Method operator ParameterTypes list handling (ACPI 38283.0). Previously, more than 2 types or 2 arguments generated a syntax error. 3829The actual underlying implementation of method argument typechecking is 3830still under development, however. 3831 3832---------------------------------------- 383313 May 2005. Summary of changes for version 20050513: 3834 38351) ACPI CA Core Subsystem: 3836 3837Implemented support for PCI Express root bridges -- added support for device 3838PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup. 3839 3840The interpreter now automatically truncates incoming 64-bit constants to 32 3841bits if currently executing out of a 32-bit ACPI table (Revision < 2). This 3842also affects the iASL compiler constant folding. (Note: as per below, the 3843iASL compiler no longer allows 64-bit constants within 32-bit tables.) 3844 3845Fixed a problem where string and buffer objects with "static" pointers 3846(pointers to initialization data within an ACPI table) were not handled 3847consistently. The internal object copy operation now always copies the data 3848to a newly allocated buffer, regardless of whether the source object is 3849static or not. 3850 3851Fixed a problem with the FromBCD operator where an implicit result 3852conversion was improperly performed while storing the result to the target 3853operand. Since this is an "explicit conversion" operator, the implicit 3854conversion should never be performed on the output. 3855 3856Fixed a problem with the CopyObject operator where a copy to an existing 3857named object did not always completely overwrite the existing object stored 3858at name. Specifically, a buffer-to-buffer copy did not delete the existing 3859buffer. 3860 3861Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces and 3862structs for consistency. 3863 3864Code and Data Size: Current and previous core subsystem library sizes are 3865shown below. These are the code and data sizes for the acpica.lib produced 3866by the Microsoft Visual C++ 6.0 compiler, and these values do not include 3867any ACPI driver or OSPM code. The debug version of the code includes the 3868debug output trace mechanism and has a much larger code and data size. Note 3869that these values will vary depending on the efficiency of the compiler and 3870the compiler options used during generation. 3871 3872 Previous Release: 3873 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 3874 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 3875 Current Release: (Same sizes) 3876 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 3877 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 3878 3879 38802) iASL Compiler/Disassembler: 3881 3882The compiler now emits a warning if an attempt is made to generate a 64-bit 3883integer constant from within a 32-bit ACPI table (Revision < 2). The integer 3884is truncated to 32 bits. 3885 3886Fixed a problem with large package objects: if the static length of the 3887package is greater than 255, the "variable length package" opcode is 3888emitted. Previously, this caused an error. This requires an update to the 3889ACPI spec, since it currently (incorrectly) states that packages larger than 3890255 elements are not allowed. 3891 3892The disassembler now correctly handles variable length packages and packages 3893larger than 255 elements. 3894 3895---------------------------------------- 389608 April 2005. Summary of changes for version 20050408: 3897 38981) ACPI CA Core Subsystem: 3899 3900Fixed three cases in the interpreter where an "index" argument to an ASL 3901function was still (internally) 32 bits instead of the required 64 bits. 3902This was the Index argument to the Index, Mid, and Match operators. 3903 3904The "strupr" function is now permanently local (AcpiUtStrupr), since this is 3905not a POSIX-defined function and not present in most kernel-level C 3906libraries. All references to the C library strupr function have been removed 3907from the headers. 3908 3909Completed the deployment of static functions/prototypes. All prototypes with 3910the static attribute have been moved from the headers to the owning C file. 3911 3912Implemented an extract option (-e) for the AcpiBin utility (AML binary 3913utility). This option allows the utility to extract individual ACPI tables 3914from the output of AcpiDmp. It provides the same functionality of the 3915acpixtract.pl perl script without the worry of setting the correct perl 3916options. AcpiBin runs on Windows and has not yet been generated/validated in 3917the Linux/Unix environment (but should be soon). 3918 3919Updated and fixed the table dump option for AcpiBin (-d). This option 3920converts a single ACPI table to a hex/ascii file, similar to the output of 3921AcpiDmp. 3922 3923Code and Data Size: Current and previous core subsystem library sizes are 3924shown below. These are the code and data sizes for the acpica.lib produced 3925by the Microsoft Visual C++ 6.0 compiler, and these values do not include 3926any ACPI driver or OSPM code. The debug version of the code includes the 3927debug output trace mechanism and has a much larger code and data size. Note 3928that these values will vary depending on the efficiency of the compiler and 3929the compiler options used during generation. 3930 3931 Previous Release: 3932 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 3933 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 3934 Current Release: 3935 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 3936 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 3937 3938 39392) iASL Compiler/Disassembler: 3940 3941Disassembler fix: Added a check to ensure that the table length found in the 3942ACPI table header within the input file is not longer than the actual input 3943file size. This indicates some kind of file or table corruption. 3944 3945---------------------------------------- 394629 March 2005. Summary of changes for version 20050329: 3947 39481) ACPI CA Core Subsystem: 3949 3950An error is now generated if an attempt is made to create a Buffer Field of 3951length zero (A CreateField with a length operand of zero.) 3952 3953The interpreter now issues a warning whenever executable code at the module 3954level is detected during ACPI table load. This will give some idea of the 3955prevalence of this type of code. 3956 3957Implemented support for references to named objects (other than control 3958methods) within package objects. 3959 3960Enhanced package object output for the debug object. Package objects are now 3961completely dumped, showing all elements. 3962 3963Enhanced miscellaneous object output for the debug object. Any object can 3964now be written to the debug object (for example, a device object can be 3965written, and the type of the object will be displayed.) 3966 3967The "static" qualifier has been added to all local functions across both the 3968core subsystem and the iASL compiler. 3969 3970The number of "long" lines (> 80 chars) within the source has been 3971significantly reduced, by about 1/3. 3972 3973Cleaned up all header files to ensure that all CA/iASL functions are 3974prototyped (even static functions) and the formatting is consistent. 3975 3976Two new header files have been added, acopcode.h and acnames.h. 3977 3978Removed several obsolete functions that were no longer used. 3979 3980Code and Data Size: Current and previous core subsystem library sizes are 3981shown below. These are the code and data sizes for the acpica.lib produced 3982by the Microsoft Visual C++ 6.0 compiler, and these values do not include 3983any ACPI driver or OSPM code. The debug version of the code includes the 3984debug output trace mechanism and has a much larger code and data size. Note 3985that these values will vary depending on the efficiency of the compiler and 3986the compiler options used during generation. 3987 3988 Previous Release: 3989 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 3990 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 3991 Current Release: 3992 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 3993 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 3994 3995 3996 39972) iASL Compiler/Disassembler: 3998 3999Fixed a problem with the resource descriptor generation/support. For the 4000ResourceSourceIndex and the ResourceSource fields, both must be present, or 4001both must be not present - can't have one without the other. 4002 4003The compiler now returns non-zero from the main procedure if any errors have 4004occurred during the compilation. 4005 4006 4007---------------------------------------- 400809 March 2005. Summary of changes for version 20050309: 4009 40101) ACPI CA Core Subsystem: 4011 4012The string-to-buffer implicit conversion code has been modified again after 4013a change to the ACPI specification. In order to match the behavior of the 4014other major ACPI implementation, the target buffer is no longer truncated if 4015the source string is smaller than an existing target buffer. This change 4016requires an update to the ACPI spec, and should eliminate the recent 4017AE_AML_BUFFER_LIMIT issues. 4018 4019The "implicit return" support was rewritten to a new algorithm that solves 4020the general case. Rather than attempt to determine when a method is about to 4021exit, the result of every ASL operator is saved momentarily until the very 4022next ASL operator is executed. Therefore, no matter how the method exits, 4023there will always be a saved implicit return value. This feature is only 4024enabled with the AcpiGbl_EnableInterpreterSlack flag, and should eliminate 4025AE_AML_NO_RETURN_VALUE errors when enabled. 4026 4027Implemented implicit conversion support for the predicate (operand) of the 4028If, Else, and While operators. String and Buffer arguments are automatically 4029converted to Integers. 4030 4031Changed the string-to-integer conversion behavior to match the new ACPI 4032errata: "If no integer object exists, a new integer is created. The ASCII 4033string is interpreted as a hexadecimal constant. Each string character is 4034interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting 4035with the first character as the most significant digit, and ending with the 4036first non-hexadecimal character or end-of-string." This means that the first 4037non-hex character terminates the conversion and this is the code that was 4038changed. 4039 4040Fixed a problem where the ObjectType operator would fail (fault) when used 4041on an Index of a Package which pointed to a null package element. The 4042operator now properly returns zero (Uninitialized) in this case. 4043 4044Fixed a problem where the While operator used excessive memory by not 4045properly popping the result stack during execution. There was no memory leak 4046after execution, however. (Code provided by Valery Podrezov.) 4047 4048Fixed a problem where references to control methods within Package objects 4049caused the method to be invoked, instead of producing a reference object 4050pointing to the method. 4051 4052Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) to 4053improve performance and reduce code size. (Code provided by Alexey 4054Starikovskiy.) 4055 4056Code and Data Size: Current and previous core subsystem library sizes are 4057shown below. These are the code and data sizes for the acpica.lib produced 4058by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4059any ACPI driver or OSPM code. The debug version of the code includes the 4060debug output trace mechanism and has a much larger code and data size. Note 4061that these values will vary depending on the efficiency of the compiler and 4062the compiler options used during generation. 4063 4064 Previous Release: 4065 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4066 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 4067 Current Release: 4068 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4069 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 4070 4071 40722) iASL Compiler/Disassembler: 4073 4074Fixed a problem with the Return operator with no arguments. Since the AML 4075grammar for the byte encoding requires an operand for the Return opcode, the 4076compiler now emits a Return(Zero) for this case. An ACPI specification 4077update has been written for this case. 4078 4079For tables other than the DSDT, namepath optimization is automatically 4080disabled. This is because SSDTs can be loaded anywhere in the namespace, the 4081compiler has no knowledge of where, and thus cannot optimize namepaths. 4082 4083Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was 4084inadvertently omitted from the ACPI specification, and will require an 4085update to the spec. 4086 4087The source file scan for ASCII characters is now optional (-a). This change 4088was made because some vendors place non-ascii characters within comments. 4089However, the scan is simply a brute-force byte compare to ensure all 4090characters in the file are in the range 0x00 to 0x7F. 4091 4092Fixed a problem with the CondRefOf operator where the compiler was 4093inappropriately checking for the existence of the target. Since the point of 4094the operator is to check for the existence of the target at run-time, the 4095compiler no longer checks for the target existence. 4096 4097Fixed a problem where errors generated from the internal AML interpreter 4098during constant folding were not handled properly, causing a fault. 4099 4100Fixed a problem with overly aggressive range checking for the Stall 4101operator. The valid range (max 255) is now only checked if the operand is of 4102type Integer. All other operand types cannot be statically checked. 4103 4104Fixed a problem where control method references within the RefOf, DeRefOf, 4105and ObjectType operators were not treated properly. They are now treated as 4106actual references, not method invocations. 4107 4108Fixed and enhanced the "list namespace" option (-ln). This option was broken 4109a number of releases ago. 4110 4111Improved error handling for the Field, IndexField, and BankField operators. 4112The compiler now cleanly reports and recovers from errors in the field 4113component (FieldUnit) list. 4114 4115Fixed a disassembler problem where the optional ResourceDescriptor fields 4116TRS and TTP were not always handled correctly. 4117 4118Disassembler - Comments in output now use "//" instead of "/*" 4119 4120---------------------------------------- 412128 February 2005. Summary of changes for version 20050228: 4122 41231) ACPI CA Core Subsystem: 4124 4125Fixed a problem where the result of an Index() operator (an object 4126reference) must increment the reference count on the target object for the 4127life of the object reference. 4128 4129Implemented AML Interpreter and Debugger support for the new ACPI 3.0 4130Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and WordSpace 4131resource descriptors. 4132 4133Implemented support in the _OSI method for the ACPI 3.0 "Extended Address 4134Space Descriptor" string, indicating interpreter support for the descriptors 4135above. 4136 4137Implemented header support for the new ACPI 3.0 FADT flag bits. 4138 4139Implemented header support for the new ACPI 3.0 PCI Express bits for the PM1 4140status/enable registers. 4141 4142Updated header support for the MADT processor local Apic struct and MADT 4143platform interrupt source struct for new ACPI 3.0 fields. 4144 4145Implemented header support for the SRAT and SLIT ACPI tables. 4146 4147Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" flag 4148at runtime. 4149 4150Code and Data Size: Current and previous core subsystem library sizes are 4151shown below. These are the code and data sizes for the acpica.lib produced 4152by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4153any ACPI driver or OSPM code. The debug version of the code includes the 4154debug output trace mechanism and has a much larger code and data size. Note 4155that these values will vary depending on the efficiency of the compiler and 4156the compiler options used during generation. 4157 4158 Previous Release: 4159 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 4160 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 4161 Current Release: 4162 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4163 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 4164 4165 41662) iASL Compiler/Disassembler: 4167 4168Fixed a problem with the internal 64-bit String-to-integer conversion with 4169strings less than two characters long. 4170 4171Fixed a problem with constant folding where the result of the Index() 4172operator can not be considered a constant. This means that Index() cannot be 4173a type3 opcode and this will require an update to the ACPI specification. 4174 4175Disassembler: Implemented support for the TTP, MTP, and TRS resource 4176descriptor fields. These fields were inadvertently ignored and not output in 4177the disassembly of the resource descriptor. 4178 4179 4180 ---------------------------------------- 418111 February 2005. Summary of changes for version 20050211: 4182 41831) ACPI CA Core Subsystem: 4184 4185Implemented ACPI 3.0 support for implicit conversion within the Match() 4186operator. MatchObjects can now be of type integer, buffer, or string instead 4187of just type integer. Package elements are implicitly converted to the type 4188of the MatchObject. This change aligns the behavior of Match() with the 4189behavior of the other logical operators (LLess(), etc.) It also requires an 4190errata change to the ACPI specification as this support was intended for 4191ACPI 3.0, but was inadvertently omitted. 4192 4193Fixed a problem with the internal implicit "to buffer" conversion. Strings 4194that are converted to buffers will cause buffer truncation if the string is 4195smaller than the target buffer. Integers that are converted to buffers will 4196not cause buffer truncation, only zero extension (both as per the ACPI 4197spec.) The problem was introduced when code was added to truncate the 4198buffer, but this should not be performed in all cases, only the string case. 4199 4200Fixed a problem with the Buffer and Package operators where the interpreter 4201would get confused if two such operators were used as operands to an ASL 4202operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result 4203stack was not being popped after the execution of these operators, resulting 4204in an AE_NO_RETURN_VALUE exception. 4205 4206Fixed a problem with constructs of the form Store(Index(...),...). The 4207reference object returned from Index was inadvertently resolved to an actual 4208value. This problem was introduced in version 20050114 when the behavior of 4209Store() was modified to restrict the object types that can be used as the 4210source operand (to match the ACPI specification.) 4211 4212Reduced excessive stack use within the AcpiGetObjectInfo procedure. 4213 4214Added a fix to aclinux.h to allow generation of AcpiExec on Linux. 4215 4216Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct. 4217 4218Code and Data Size: Current and previous core subsystem library sizes are 4219shown below. These are the code and data sizes for the acpica.lib produced 4220by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4221any ACPI driver or OSPM code. The debug version of the code includes the 4222debug output trace mechanism and has a much larger code and data size. Note 4223that these values will vary depending on the efficiency of the compiler and 4224the compiler options used during generation. 4225 4226 Previous Release: 4227 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 4228 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 4229 Current Release: 4230 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 4231 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 4232 4233 42342) iASL Compiler/Disassembler: 4235 4236Fixed a code generation problem in the constant folding optimization code 4237where incorrect code was generated if a constant was reduced to a buffer 4238object (i.e., a reduced type 5 opcode.) 4239 4240Fixed a typechecking problem for the ToBuffer operator. Caused by an 4241incorrect return type in the internal opcode information table. 4242 4243---------------------------------------- 424425 January 2005. Summary of changes for version 20050125: 4245 42461) ACPI CA Core Subsystem: 4247 4248Fixed a recently introduced problem with the Global Lock where the 4249underlying semaphore was not created. This problem was introduced in 4250version 20050114, and caused an AE_AML_NO_OPERAND exception during an 4251Acquire() operation on _GL. 4252 4253The local object cache is now optional, and is disabled by default. Both 4254AcpiExec and the iASL compiler enable the cache because they run in user 4255mode and this enhances their performance. #define ACPI_ENABLE_OBJECT_CACHE 4256to enable the local cache. 4257 4258Fixed an issue in the internal function AcpiUtEvaluateObject concerning the 4259optional "implicit return" support where an error was returned if no return 4260object was expected, but one was implicitly returned. AE_OK is now returned 4261in this case and the implicitly returned object is deleted. 4262AcpiUtEvaluateObject is only occasionally used, and only to execute reserved 4263methods such as _STA and _INI where the return type is known up front. 4264 4265Fixed a few issues with the internal convert-to-integer code. It now returns 4266an error if an attempt is made to convert a null string, a string of only 4267blanks/tabs, or a zero-length buffer. This affects both implicit conversion 4268and explicit conversion via the ToInteger() operator. 4269 4270The internal debug code in AcpiUtAcquireMutex has been commented out. It is 4271not needed for normal operation and should increase the performance of the 4272entire subsystem. The code remains in case it is needed for debug purposes 4273again. 4274 4275The AcpiExec source and makefile are included in the Unix/Linux package for 4276the first time. 4277 4278Code and Data Size: Current and previous core subsystem library sizes are 4279shown below. These are the code and data sizes for the acpica.lib produced 4280by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4281any ACPI driver or OSPM code. The debug version of the code includes the 4282debug output trace mechanism and has a much larger code and data size. Note 4283that these values will vary depending on the efficiency of the compiler and 4284the compiler options used during generation. 4285 4286 Previous Release: 4287 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 4288 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 4289 Current Release: 4290 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 4291 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 4292 42932) iASL Compiler/Disassembler: 4294 4295Switch/Case support: A warning is now issued if the type of the Switch value 4296cannot be determined at compile time. For example, Switch(Arg0) will 4297generate the warning, and the type is assumed to be an integer. As per the 4298ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate the 4299warning. 4300 4301Switch/Case support: Implemented support for buffer and string objects as 4302the switch value. This is an ACPI 3.0 feature, now that LEqual supports 4303buffers and strings. 4304 4305Switch/Case support: The emitted code for the LEqual() comparisons now uses 4306the switch value as the first operand, not the second. The case value is now 4307the second operand, and this allows the case value to be implicitly 4308converted to the type of the switch value, not the other way around. 4309 4310Switch/Case support: Temporary variables are now emitted immediately within 4311the control method, not at the global level. This means that there are now 431236 temps available per-method, not 36 temps per-module as was the case with 4313the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.) 4314 4315---------------------------------------- 431614 January 2005. Summary of changes for version 20050114: 4317 4318Added 2005 copyright to all module headers. This affects every module in 4319the core subsystem, iASL compiler, and the utilities. 4320 43211) ACPI CA Core Subsystem: 4322 4323Fixed an issue with the String-to-Buffer conversion code where the string 4324null terminator was not included in the buffer after conversion, but there 4325is existing ASL that assumes the string null terminator is included. This is 4326the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was 4327introduced in the previous version when the code was updated to correctly 4328set the converted buffer size as per the ACPI specification. The ACPI spec 4329is ambiguous and will be updated to specify that the null terminator must be 4330included in the converted buffer. This also affects the ToBuffer() ASL 4331operator. 4332 4333Fixed a problem with the Mid() ASL/AML operator where it did not work 4334correctly on Buffer objects. Newly created sub-buffers were not being marked 4335as initialized. 4336 4337 4338Fixed a problem in AcpiTbFindTable where incorrect string compares were 4339performed on the OemId and OemTableId table header fields. These fields are 4340not null terminated, so strncmp is now used instead of strcmp. 4341 4342Implemented a restriction on the Store() ASL/AML operator to align the 4343behavior with the ACPI specification. Previously, any object could be used 4344as the source operand. Now, the only objects that may be used are Integers, 4345Buffers, Strings, Packages, Object References, and DDB Handles. If 4346necessary, the original behavior can be restored by enabling the 4347EnableInterpreterSlack flag. 4348 4349Enhanced the optional "implicit return" support to allow an implicit return 4350value from methods that are invoked externally via the AcpiEvaluateObject 4351interface. This enables implicit returns from the _STA and _INI methods, 4352for example. 4353 4354Changed the Revision() ASL/AML operator to return the current version of the 4355AML interpreter, in the YYYYMMDD format. Previously, it incorrectly returned 4356the supported ACPI version (This is the function of the _REV method). 4357 4358Updated the _REV predefined method to return the currently supported version 4359of ACPI, now 3. 4360 4361Implemented batch mode option for the AcpiExec utility (-b). 4362 4363Code and Data Size: Current and previous core subsystem library sizes are 4364shown below. These are the code and data sizes for the acpica.lib produced 4365by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4366any ACPI driver or OSPM code. The debug version of the code includes the 4367debug output trace mechanism and has a much larger code and data size. Note 4368that these values will vary depending on the efficiency of the compiler and 4369the compiler options used during generation. 4370 4371 Previous Release: 4372 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4373 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 4374 Current Release: 4375 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 4376 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 4377 4378---------------------------------------- 437910 December 2004. Summary of changes for version 20041210: 4380 4381ACPI 3.0 support is nearing completion in both the iASL compiler and the 4382ACPI CA core subsystem. 4383 43841) ACPI CA Core Subsystem: 4385 4386Fixed a problem in the ToDecimalString operator where the resulting string 4387length was incorrectly calculated. The length is now calculated exactly, 4388eliminating incorrect AE_STRING_LIMIT exceptions. 4389 4390Fixed a problem in the ToHexString operator to allow a maximum 200 character 4391string to be produced. 4392 4393Fixed a problem in the internal string-to-buffer and buffer-to-buffer copy 4394routine where the length of the resulting buffer was not truncated to the 4395new size (if the target buffer already existed). 4396 4397Code and Data Size: Current and previous core subsystem library sizes are 4398shown below. These are the code and data sizes for the acpica.lib produced 4399by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4400any ACPI driver or OSPM code. The debug version of the code includes the 4401debug output trace mechanism and has a much larger code and data size. Note 4402that these values will vary depending on the efficiency of the compiler and 4403the compiler options used during generation. 4404 4405 Previous Release: 4406 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4407 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 4408 Current Release: 4409 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4410 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 4411 4412 44132) iASL Compiler/Disassembler: 4414 4415Implemented the new ACPI 3.0 resource template macros - DWordSpace, 4416ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace. 4417Includes support in the disassembler. 4418 4419Implemented support for the new (ACPI 3.0) parameter to the Register macro, 4420AccessSize. 4421 4422Fixed a problem where the _HE resource name for the Interrupt macro was 4423referencing bit 0 instead of bit 1. 4424 4425Implemented check for maximum 255 interrupts in the Interrupt macro. 4426 4427Fixed a problem with the predefined resource descriptor names where 4428incorrect AML code was generated if the offset within the resource buffer 4429was 0 or 1. The optimizer shortened the AML code to a single byte opcode 4430but did not update the surrounding package lengths. 4431 4432Changes to the Dma macro: All channels within the channel list must be in 4433the range 0-7. Maximum 8 channels can be specified. BusMaster operand is 4434optional (default is BusMaster). 4435 4436Implemented check for maximum 7 data bytes for the VendorShort macro. 4437 4438The ReadWrite parameter is now optional for the Memory32 and similar macros. 4439 4440---------------------------------------- 444103 December 2004. Summary of changes for version 20041203: 4442 44431) ACPI CA Core Subsystem: 4444 4445The low-level field insertion/extraction code (exfldio) has been completely 4446rewritten to eliminate unnecessary complexity, bugs, and boundary 4447conditions. 4448 4449Fixed a problem in the ToInteger, ToBuffer, ToHexString, and ToDecimalString 4450operators where the input operand could be inadvertently deleted if no 4451conversion was necessary (e.g., if the input to ToInteger was an Integer 4452object.) 4453 4454Fixed a problem with the ToDecimalString and ToHexString where an incorrect 4455exception code was returned if the resulting string would be > 200 chars. 4456AE_STRING_LIMIT is now returned. 4457 4458Fixed a problem with the Concatenate operator where AE_OK was always 4459returned, even if the operation failed. 4460 4461Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128 4462semaphores to be allocated. 4463 4464Code and Data Size: Current and previous core subsystem library sizes are 4465shown below. These are the code and data sizes for the acpica.lib produced 4466by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4467any ACPI driver or OSPM code. The debug version of the code includes the 4468debug output trace mechanism and has a much larger code and data size. Note 4469that these values will vary depending on the efficiency of the compiler and 4470the compiler options used during generation. 4471 4472 Previous Release: 4473 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 4474 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 4475 Current Release: 4476 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4477 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 4478 4479 44802) iASL Compiler/Disassembler: 4481 4482Fixed typechecking for the ObjectType and SizeOf operators. Problem was 4483recently introduced in 20041119. 4484 4485Fixed a problem with the ToUUID macro where the upper nybble of each buffer 4486byte was inadvertently set to zero. 4487 4488---------------------------------------- 448919 November 2004. Summary of changes for version 20041119: 4490 44911) ACPI CA Core Subsystem: 4492 4493Fixed a problem in the internal ConvertToInteger routine where new integers 4494were not truncated to 32 bits for 32-bit ACPI tables. This routine converts 4495buffers and strings to integers. 4496 4497Implemented support to store a value to an Index() on a String object. This 4498is an ACPI 2.0 feature that had not yet been implemented. 4499 4500Implemented new behavior for storing objects to individual package elements 4501(via the Index() operator). The previous behavior was to invoke the implicit 4502conversion rules if an object was already present at the index. The new 4503behavior is to simply delete any existing object and directly store the new 4504object. Although the ACPI specification seems unclear on this subject, other 4505ACPI implementations behave in this manner. (This is the root of the 4506AE_BAD_HEX_CONSTANT issue.) 4507 4508Modified the RSDP memory scan mechanism to support the extended checksum for 4509ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid 4510RSDP signature is found with a valid checksum. 4511 4512Code and Data Size: Current and previous core subsystem library sizes are 4513shown below. These are the code and data sizes for the acpica.lib produced 4514by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4515any ACPI driver or OSPM code. The debug version of the code includes the 4516debug output trace mechanism and has a much larger code and data size. Note 4517that these values will vary depending on the efficiency of the compiler and 4518the compiler options used during generation. 4519 4520 Previous Release: 4521 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 4522 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 4523 Current Release: 4524 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 4525 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 4526 4527 45282) iASL Compiler/Disassembler: 4529 4530Fixed a missing semicolon in the aslcompiler.y file. 4531 4532---------------------------------------- 453305 November 2004. Summary of changes for version 20041105: 4534 45351) ACPI CA Core Subsystem: 4536 4537Implemented support for FADT revision 2. This was an interim table (between 4538ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register. 4539 4540Implemented optional support to allow uninitialized LocalX and ArgX 4541variables in a control method. The variables are initialized to an Integer 4542object with a value of zero. This support is enabled by setting the 4543AcpiGbl_EnableInterpreterSlack flag to TRUE. 4544 4545Implemented support for Integer objects for the SizeOf operator. Either 4 4546or 8 is returned, depending on the current integer size (32-bit or 64-bit, 4547depending on the parent table revision). 4548 4549Fixed a problem in the implementation of the SizeOf and ObjectType operators 4550where the operand was resolved to a value too early, causing incorrect 4551return values for some objects. 4552 4553Fixed some possible memory leaks during exceptional conditions. 4554 4555Code and Data Size: Current and previous core subsystem library sizes are 4556shown below. These are the code and data sizes for the acpica.lib produced 4557by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4558any ACPI driver or OSPM code. The debug version of the code includes the 4559debug output trace mechanism and has a much larger code and data size. Note 4560that these values will vary depending on the efficiency of the compiler and 4561the compiler options used during generation. 4562 4563 Previous Release: 4564 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 4565 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 4566 Current Release: 4567 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 4568 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 4569 4570 45712) iASL Compiler/Disassembler: 4572 4573Implemented support for all ACPI 3.0 reserved names and methods. 4574 4575Implemented all ACPI 3.0 grammar elements in the front-end, including 4576support for semicolons. 4577 4578Implemented the ACPI 3.0 Function() and ToUUID() macros 4579 4580Fixed a problem in the disassembler where a Scope() operator would not be 4581emitted properly if the target of the scope was in another table. 4582 4583---------------------------------------- 458415 October 2004. Summary of changes for version 20041015: 4585 4586Note: ACPI CA is currently undergoing an in-depth and complete formal 4587evaluation to test/verify the following areas. Other suggestions are 4588welcome. This will result in an increase in the frequency of releases and 4589the number of bug fixes in the next few months. 4590 - Functional tests for all ASL/AML operators 4591 - All implicit/explicit type conversions 4592 - Bit fields and operation regions 4593 - 64-bit math support and 32-bit-only "truncated" math support 4594 - Exceptional conditions, both compiler and interpreter 4595 - Dynamic object deletion and memory leaks 4596 - ACPI 3.0 support when implemented 4597 - External interfaces to the ACPI subsystem 4598 4599 46001) ACPI CA Core Subsystem: 4601 4602Fixed two alignment issues on 64-bit platforms - within debug statements in 4603AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the Address 4604field within the non-aligned ACPI generic address structure. 4605 4606Fixed a problem in the Increment and Decrement operators where incorrect 4607operand resolution could result in the inadvertent modification of the 4608original integer when the integer is passed into another method as an 4609argument and the arg is then incremented/decremented. 4610 4611Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-bit 4612BCD number were truncated during conversion. 4613 4614Fixed a problem in the ToDecimal operator where the length of the resulting 4615string could be set incorrectly too long if the input operand was a Buffer 4616object. 4617 4618Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte (0) 4619within a buffer would prematurely terminate a compare between buffer 4620objects. 4621 4622Added a check for string overflow (>200 characters as per the ACPI 4623specification) during the Concatenate operator with two string operands. 4624 4625Code and Data Size: Current and previous core subsystem library sizes are 4626shown below. These are the code and data sizes for the acpica.lib produced 4627by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4628any ACPI driver or OSPM code. The debug version of the code includes the 4629debug output trace mechanism and has a much larger code and data size. Note 4630that these values will vary depending on the efficiency of the compiler and 4631the compiler options used during generation. 4632 4633 Previous Release: 4634 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 4635 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 4636 Current Release: 4637 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 4638 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 4639 4640 4641 46422) iASL Compiler/Disassembler: 4643 4644Allow the use of the ObjectType operator on uninitialized Locals and Args 4645(returns 0 as per the ACPI specification). 4646 4647Fixed a problem where the compiler would fault if there was a syntax error 4648in the FieldName of all of the various CreateXXXField operators. 4649 4650Disallow the use of lower case letters within the EISAID macro, as per the 4651ACPI specification. All EISAID strings must be of the form "UUUNNNN" Where 4652U is an uppercase letter and N is a hex digit. 4653 4654 4655---------------------------------------- 465606 October 2004. Summary of changes for version 20041006: 4657 46581) ACPI CA Core Subsystem: 4659 4660Implemented support for the ACPI 3.0 Timer operator. This ASL function 4661implements a 64-bit timer with 100 nanosecond granularity. 4662 4663Defined a new OSL interface, AcpiOsGetTimer. This interface is used to 4664implement the ACPI 3.0 Timer operator. This allows the host OS to implement 4665the timer with the best clock available. Also, it keeps the core subsystem 4666out of the clock handling business, since the host OS (usually) performs 4667this function. 4668 4669Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write) 4670functions use a 64-bit address which is part of the packed ACPI Generic 4671Address Structure. Since the structure is non-aligned, the alignment macros 4672are now used to extract the address to a local variable before use. 4673 4674Fixed a problem where the ToInteger operator assumed all input strings were 4675hexadecimal. The operator now handles both decimal strings and hex strings 4676(prefixed with "0x"). 4677 4678Fixed a problem where the string length in the string object created as a 4679result of the internal ConvertToString procedure could be incorrect. This 4680potentially affected all implicit conversions and also the ToDecimalString 4681and ToHexString operators. 4682 4683Fixed two problems in the ToString operator. If the length parameter was 4684zero, an incorrect string object was created and the value of the input 4685length parameter was inadvertently changed from zero to Ones. 4686 4687Fixed a problem where the optional ResourceSource string in the ExtendedIRQ 4688resource macro was ignored. 4689 4690Simplified the interfaces to the internal division functions, reducing code 4691size and complexity. 4692 4693Code and Data Size: Current and previous core subsystem library sizes are 4694shown below. These are the code and data sizes for the acpica.lib produced 4695by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4696any ACPI driver or OSPM code. The debug version of the code includes the 4697debug output trace mechanism and has a much larger code and data size. Note 4698that these values will vary depending on the efficiency of the compiler and 4699the compiler options used during generation. 4700 4701 Previous Release: 4702 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 4703 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 4704 Current Release: 4705 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 4706 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 4707 4708 47092) iASL Compiler/Disassembler: 4710 4711Implemented support for the ACPI 3.0 Timer operator. 4712 4713Fixed a problem where the Default() operator was inadvertently ignored in a 4714Switch/Case block. This was a problem in the translation of the Switch 4715statement to If...Else pairs. 4716 4717Added support to allow a standalone Return operator, with no parentheses (or 4718operands). 4719 4720Fixed a problem with code generation for the ElseIf operator where the 4721translated Else...If parse tree was improperly constructed leading to the 4722loss of some code. 4723 4724---------------------------------------- 472522 September 2004. Summary of changes for version 20040922: 4726 47271) ACPI CA Core Subsystem: 4728 4729Fixed a problem with the implementation of the LNot() operator where "Ones" 4730was not returned for the TRUE case. Changed the code to return Ones instead 4731of (!Arg) which was usually 1. This change affects iASL constant folding for 4732this operator also. 4733 4734Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was not 4735initialized properly -- Now zero the entire buffer in this case where the 4736buffer already exists. 4737 4738Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32 4739Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all 4740related code considerably. This will require changes/updates to all OS 4741interface layers (OSLs.) 4742 4743Implemented a new external interface, AcpiInstallExceptionHandler, to allow 4744a system exception handler to be installed. This handler is invoked upon any 4745run-time exception that occurs during control method execution. 4746 4747Added support for the DSDT in AcpiTbFindTable. This allows the 4748DataTableRegion() operator to access the local copy of the DSDT. 4749 4750Code and Data Size: Current and previous core subsystem library sizes are 4751shown below. These are the code and data sizes for the acpica.lib produced 4752by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4753any ACPI driver or OSPM code. The debug version of the code includes the 4754debug output trace mechanism and has a much larger code and data size. Note 4755that these values will vary depending on the efficiency of the compiler and 4756the compiler options used during generation. 4757 4758 Previous Release: 4759 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 4760 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 4761 Current Release: 4762 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 4763 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 4764 4765 47662) iASL Compiler/Disassembler: 4767 4768Fixed a problem with constant folding and the LNot operator. LNot was 4769returning 1 in the TRUE case, not Ones as per the ACPI specification. This 4770could result in the generation of an incorrect folded/reduced constant. 4771 4772End-Of-File is now allowed within a "//"-style comment. A parse error no 4773longer occurs if such a comment is at the very end of the input ASL source 4774file. 4775 4776Implemented the "-r" option to override the Revision in the table header. 4777The initial use of this option will be to simplify the evaluation of the AML 4778interpreter by allowing a single ASL source module to be compiled for either 477932-bit or 64-bit integers. 4780 4781 4782---------------------------------------- 478327 August 2004. Summary of changes for version 20040827: 4784 47851) ACPI CA Core Subsystem: 4786 4787- Implemented support for implicit object conversion in the non-numeric 4788logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, and 4789LNotEqual.) Any combination of Integers/Strings/Buffers may now be used; 4790the second operand is implicitly converted on the fly to match the type of 4791the first operand. For example: 4792 4793 LEqual (Source1, Source2) 4794 4795Source1 and Source2 must each evaluate to an integer, a string, or a buffer. 4796The data type of Source1 dictates the required type of Source2. Source2 is 4797implicitly converted if necessary to match the type of Source1. 4798 4799- Updated and corrected the behavior of the string conversion support. The 4800rules concerning conversion of buffers to strings (according to the ACPI 4801specification) are as follows: 4802 4803ToDecimalString - explicit byte-wise conversion of buffer to string of 4804decimal values (0-255) separated by commas. ToHexString - explicit byte-wise 4805conversion of buffer to string of hex values (0-FF) separated by commas. 4806ToString - explicit byte-wise conversion of buffer to string. Byte-by-byte 4807copy with no transform except NULL terminated. Any other implicit buffer-to- 4808string conversion - byte-wise conversion of buffer to string of hex values 4809(0-FF) separated by spaces. 4810 4811- Fixed typo in definition of AcpiGbl_EnableInterpreterSlack. 4812 4813- Fixed a problem in AcpiNsGetPathnameLength where the returned length was 4814one byte too short in the case of a node in the root scope. This could 4815cause a fault during debug output. 4816 4817- Code and Data Size: Current and previous core subsystem library sizes are 4818shown below. These are the code and data sizes for the acpica.lib produced 4819by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4820any ACPI driver or OSPM code. The debug version of the code includes the 4821debug output trace mechanism and has a much larger code and data size. Note 4822that these values will vary depending on the efficiency of the compiler and 4823the compiler options used during generation. 4824 4825 Previous Release: 4826 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 4827 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 4828 Current Release: 4829 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 4830 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 4831 4832 48332) iASL Compiler/Disassembler: 4834 4835- Fixed a Linux generation error. 4836 4837 4838---------------------------------------- 483916 August 2004. Summary of changes for version 20040816: 4840 48411) ACPI CA Core Subsystem: 4842 4843Designed and implemented support within the AML interpreter for the so- 4844called "implicit return". This support returns the result of the last ASL 4845operation within a control method, in the absence of an explicit Return() 4846operator. A few machines depend on this behavior, even though it is not 4847explicitly supported by the ASL language. It is optional support that can 4848be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag. 4849 4850Removed support for the PCI_Config address space from the internal low level 4851hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This 4852support was not used internally, and would not work correctly anyway because 4853the PCI bus number and segment number were not supported. There are 4854separate interfaces for PCI configuration space access because of the unique 4855interface. 4856 4857Code and Data Size: Current and previous core subsystem library sizes are 4858shown below. These are the code and data sizes for the acpica.lib produced 4859by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4860any ACPI driver or OSPM code. The debug version of the code includes the 4861debug output trace mechanism and has a much larger code and data size. Note 4862that these values will vary depending on the efficiency of the compiler and 4863the compiler options used during generation. 4864 4865 Previous Release: 4866 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 4867 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 4868 Current Release: 4869 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 4870 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 4871 4872 48732) iASL Compiler/Disassembler: 4874 4875Fixed a problem where constants in ASL expressions at the root level (not 4876within a control method) could be inadvertently truncated during code 4877generation. This problem was introduced in the 20040715 release. 4878 4879 4880---------------------------------------- 488115 July 2004. Summary of changes for version 20040715: 4882 48831) ACPI CA Core Subsystem: 4884 4885Restructured the internal HW GPE interfaces to pass/track the current state 4886of interrupts (enabled/disabled) in order to avoid possible deadlock and 4887increase flexibility of the interfaces. 4888 4889Implemented a "lexicographical compare" for String and Buffer objects within 4890the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -- 4891as per further clarification to the ACPI specification. Behavior is similar 4892to C library "strcmp". 4893 4894Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable 4895external function. In the 32-bit non-debug case, the stack use has been 4896reduced from 168 bytes to 32 bytes. 4897 4898Deployed a new run-time configuration flag, AcpiGbl_EnableInterpreterSlack, 4899whose purpose is to allow the AML interpreter to forgive certain bad AML 4900constructs. Default setting is FALSE. 4901 4902Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field IO 4903support code. If enabled, it allows field access to go beyond the end of a 4904region definition if the field is within the region length rounded up to the 4905next access width boundary (a common coding error.) 4906 4907Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to 4908ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also, these 4909symbols are lowercased by the latest version of the AcpiSrc tool. 4910 4911The prototypes for the PCI interfaces in acpiosxf.h have been updated to 4912rename "Register" to simply "Reg" to prevent certain compilers from 4913complaining. 4914 4915Code and Data Size: Current and previous core subsystem library sizes are 4916shown below. These are the code and data sizes for the acpica.lib produced 4917by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4918any ACPI driver or OSPM code. The debug version of the code includes the 4919debug output trace mechanism and has a much larger code and data size. Note 4920that these values will vary depending on the efficiency of the compiler and 4921the compiler options used during generation. 4922 4923 Previous Release: 4924 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 4925 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 4926 Current Release: 4927 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 4928 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 4929 4930 49312) iASL Compiler/Disassembler: 4932 4933Implemented full support for Package objects within the Case() operator. 4934Note: The Break() operator is currently not supported within Case blocks 4935(TermLists) as there is some question about backward compatibility with ACPI 49361.0 interpreters. 4937 4938 4939Fixed a problem where complex terms were not supported properly within the 4940Switch() operator. 4941 4942Eliminated extraneous warning for compiler-emitted reserved names of the 4943form "_T_x". (Used in Switch/Case operators.) 4944 4945Eliminated optimization messages for "_T_x" objects and small constants 4946within the DefinitionBlock operator. 4947 4948 4949---------------------------------------- 495015 June 2004. Summary of changes for version 20040615: 4951 49521) ACPI CA Core Subsystem: 4953 4954Implemented support for Buffer and String objects (as per ACPI 2.0) for the 4955following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 4956LLessEqual. 4957 4958All directory names in the entire source package are lower case, as they 4959were in earlier releases. 4960 4961Implemented "Disassemble" command in the AML debugger that will disassemble 4962a single control method. 4963 4964Code and Data Size: Current and previous core subsystem library sizes are 4965shown below. These are the code and data sizes for the acpica.lib produced 4966by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4967any ACPI driver or OSPM code. The debug version of the code includes the 4968debug output trace mechanism and has a much larger code and data size. Note 4969that these values will vary depending on the efficiency of the compiler and 4970the compiler options used during generation. 4971 4972 Previous Release: 4973 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 4974 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 4975 4976 Current Release: 4977 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 4978 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 4979 4980 49812) iASL Compiler/Disassembler: 4982 4983Implemented support for Buffer and String objects (as per ACPI 2.0) for the 4984following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 4985LLessEqual. 4986 4987All directory names in the entire source package are lower case, as they 4988were in earlier releases. 4989 4990Fixed a fault when using the -g or -d<nofilename> options if the FADT was 4991not found. 4992 4993Fixed an issue with the Windows version of the compiler where later versions 4994of Windows place the FADT in the registry under the name "FADT" and not 4995"FACP" as earlier versions did. This applies when using the -g or - 4996d<nofilename> options. The compiler now looks for both strings as 4997necessary. 4998 4999Fixed a problem with compiler namepath optimization where a namepath within 5000the Scope() operator could not be optimized if the namepath was a subpath of 5001the current scope path. 5002 5003---------------------------------------- 500427 May 2004. Summary of changes for version 20040527: 5005 50061) ACPI CA Core Subsystem: 5007 5008Completed a new design and implementation for EBDA (Extended BIOS Data Area) 5009support in the RSDP scan code. The original code improperly scanned for the 5010EBDA by simply scanning from memory location 0 to 0x400. The correct method 5011is to first obtain the EBDA pointer from within the BIOS data area, then 5012scan 1K of memory starting at the EBDA pointer. There appear to be few if 5013any machines that place the RSDP in the EBDA, however. 5014 5015Integrated a fix for a possible fault during evaluation of BufferField 5016arguments. Obsolete code that was causing the problem was removed. 5017 5018Found and fixed a problem in the Field Support Code where data could be 5019corrupted on a bit field read that starts on an aligned boundary but does 5020not end on an aligned boundary. Merged the read/write "datum length" 5021calculation code into a common procedure. 5022 5023Rolled in a couple of changes to the FreeBSD-specific header. 5024 5025 5026Code and Data Size: Current and previous core subsystem library sizes are 5027shown below. These are the code and data sizes for the acpica.lib produced 5028by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5029any ACPI driver or OSPM code. The debug version of the code includes the 5030debug output trace mechanism and has a much larger code and data size. Note 5031that these values will vary depending on the efficiency of the compiler and 5032the compiler options used during generation. 5033 5034 Previous Release: 5035 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 5036 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 5037 Current Release: 5038 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 5039 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 5040 5041 50422) iASL Compiler/Disassembler: 5043 5044Fixed a generation warning produced by some overly-verbose compilers for a 504564-bit constant. 5046 5047---------------------------------------- 504814 May 2004. Summary of changes for version 20040514: 5049 50501) ACPI CA Core Subsystem: 5051 5052Fixed a problem where hardware GPE enable bits sometimes not set properly 5053during and after GPE method execution. Result of 04/27 changes. 5054 5055Removed extra "clear all GPEs" when sleeping/waking. 5056 5057Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single 5058AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above to 5059the new AcpiEv* calls as appropriate. 5060 5061ACPI_OS_NAME was removed from the OS-specific headers. The default name is 5062now "Microsoft Windows NT" for maximum compatibility. However this can be 5063changed by modifying the acconfig.h file. 5064 5065Allow a single invocation of AcpiInstallNotifyHandler for a handler that 5066traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag. 5067 5068Run _INI methods on ThermalZone objects. This is against the ACPI 5069specification, but there is apparently ASL code in the field that has these 5070_INI methods, and apparently "other" AML interpreters execute them. 5071 5072Performed a full 16/32/64 bit lint that resulted in some small changes. 5073 5074Added a sleep simulation command to the AML debugger to test sleep code. 5075 5076Code and Data Size: Current and previous core subsystem library sizes are 5077shown below. These are the code and data sizes for the acpica.lib produced 5078by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5079any ACPI driver or OSPM code. The debug version of the code includes the 5080debug output trace mechanism and has a much larger code and data size. Note 5081that these values will vary depending on the efficiency of the compiler and 5082the compiler options used during generation. 5083 5084 Previous Release: 5085 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 5086 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 5087 Current Release: 5088 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 5089 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 5090 5091---------------------------------------- 509227 April 2004. Summary of changes for version 20040427: 5093 50941) ACPI CA Core Subsystem: 5095 5096Completed a major overhaul of the GPE handling within ACPI CA. There are 5097now three types of GPEs: wake-only, runtime-only, and combination wake/run. 5098The only GPEs allowed to be combination wake/run are for button-style 5099devices such as a control-method power button, control-method sleep button, 5100or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are not 5101referenced by any _PRW methods are marked for "runtime" and hardware 5102enabled. Any GPE that is referenced by a _PRW method is marked for "wake" 5103(and disabled at runtime). However, at sleep time, only those GPEs that 5104have been specifically enabled for wake via the AcpiEnableGpe interface will 5105actually be hardware enabled. 5106 5107A new external interface has been added, AcpiSetGpeType(), that is meant to 5108be used by device drivers to force a GPE to a particular type. It will be 5109especially useful for the drivers for the button devices mentioned above. 5110 5111Completed restructuring of the ACPI CA initialization sequence so that 5112default operation region handlers are installed before GPEs are initialized 5113and the _PRW methods are executed. This will prevent errors when the _PRW 5114methods attempt to access system memory or I/O space. 5115 5116GPE enable/disable no longer reads the GPE enable register. We now keep the 5117enable info for runtime and wake separate and in the GPE_EVENT_INFO. We 5118thus no longer depend on the hardware to maintain these bits. 5119 5120Always clear the wake status and fixed/GPE status bits before sleep, even 5121for state S5. 5122 5123Improved the AML debugger output for displaying the GPE blocks and their 5124current status. 5125 5126Added new strings for the _OSI method, of the form "Windows 2001 SPx" where 5127x = 0,1,2,3,4. 5128 5129Fixed a problem where the physical address was incorrectly calculated when 5130the Load() operator was used to directly load from an Operation Region (vs. 5131loading from a Field object.) Also added check for minimum table length for 5132this case. 5133 5134Fix for multiple mutex acquisition. Restore original thread SyncLevel on 5135mutex release. 5136 5137Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for 5138consistency with the other fields returned. 5139 5140Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such 5141structure for each GPE in the system, so the size of this structure is 5142important. 5143 5144CPU stack requirement reduction: Cleaned up the method execution and object 5145evaluation paths so that now a parameter structure is passed, instead of 5146copying the various method parameters over and over again. 5147 5148In evregion.c: Correctly exit and reenter the interpreter region if and 5149only if dispatching an operation region request to a user-installed handler. 5150Do not exit/reenter when dispatching to a default handler (e.g., default 5151system memory or I/O handlers) 5152 5153 5154Notes for updating drivers for the new GPE support. The following changes 5155must be made to ACPI-related device drivers that are attached to one or more 5156GPEs: (This information will be added to the ACPI CA Programmer Reference.) 5157 51581) AcpiInstallGpeHandler no longer automatically enables the GPE, you must 5159explicitly call AcpiEnableGpe. 51602) There is a new interface called AcpiSetGpeType. This should be called 5161before enabling the GPE. Also, this interface will automatically disable 5162the GPE if it is currently enabled. 51633) AcpiEnableGpe no longer supports a GPE type flag. 5164 5165Specific drivers that must be changed: 51661) EC driver: 5167 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED, 5168AeGpeHandler, NULL); 5169 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME); 5170 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR); 5171 51722) Button Drivers (Power, Lid, Sleep): 5173Run _PRW method under parent device 5174If _PRW exists: /* This is a control-method button */ 5175 Extract GPE number and possibly GpeDevice 5176 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN); 5177 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR); 5178 5179For all other devices that have _PRWs, we automatically set the GPE type to 5180ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. This 5181must be done on a selective basis, usually requiring some kind of user app 5182to allow the user to pick the wake devices. 5183 5184 5185Code and Data Size: Current and previous core subsystem library sizes are 5186shown below. These are the code and data sizes for the acpica.lib produced 5187by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5188any ACPI driver or OSPM code. The debug version of the code includes the 5189debug output trace mechanism and has a much larger code and data size. Note 5190that these values will vary depending on the efficiency of the compiler and 5191the compiler options used during generation. 5192 5193 Previous Release: 5194 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 5195 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 5196 Current Release: 5197 5198 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 5199 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 5200 5201 5202 5203---------------------------------------- 520402 April 2004. Summary of changes for version 20040402: 5205 52061) ACPI CA Core Subsystem: 5207 5208Fixed an interpreter problem where an indirect store through an ArgX 5209parameter was incorrectly applying the "implicit conversion rules" during 5210the store. From the ACPI specification: "If the target is a method local or 5211argument (LocalX or ArgX), no conversion is performed and the result is 5212stored directly to the target". The new behavior is to disable implicit 5213conversion during ALL stores to an ArgX. 5214 5215Changed the behavior of the _PRW method scan to ignore any and all errors 5216returned by a given _PRW. This prevents the scan from aborting from the 5217failure of any single _PRW. 5218 5219Moved the runtime configuration parameters from the global init procedure to 5220static variables in acglobal.h. This will allow the host to override the 5221default values easily. 5222 5223Code and Data Size: Current and previous core subsystem library sizes are 5224shown below. These are the code and data sizes for the acpica.lib produced 5225by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5226any ACPI driver or OSPM code. The debug version of the code includes the 5227debug output trace mechanism and has a much larger code and data size. Note 5228that these values will vary depending on the efficiency of the compiler and 5229the compiler options used during generation. 5230 5231 Previous Release: 5232 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 5233 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 5234 Current Release: 5235 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 5236 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 5237 5238 52392) iASL Compiler/Disassembler: 5240 5241iASL now fully disassembles SSDTs. However, External() statements are not 5242generated automatically for unresolved symbols at this time. This is a 5243planned feature for future implementation. 5244 5245Fixed a scoping problem in the disassembler that occurs when the type of the 5246target of a Scope() operator is overridden. This problem caused an 5247incorrectly nested internal namespace to be constructed. 5248 5249Any warnings or errors that are emitted during disassembly are now commented 5250out automatically so that the resulting file can be recompiled without any 5251hand editing. 5252 5253---------------------------------------- 525426 March 2004. Summary of changes for version 20040326: 5255 52561) ACPI CA Core Subsystem: 5257 5258Implemented support for "wake" GPEs via interaction between GPEs and the 5259_PRW methods. Every GPE that is pointed to by one or more _PRWs is 5260identified as a WAKE GPE and by default will no longer be enabled at 5261runtime. Previously, we were blindly enabling all GPEs with a corresponding 5262_Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway. We 5263believe this has been the cause of thousands of "spurious" GPEs on some 5264systems. 5265 5266This new GPE behavior is can be reverted to the original behavior (enable 5267ALL GPEs at runtime) via a runtime flag. 5268 5269Fixed a problem where aliased control methods could not access objects 5270properly. The proper scope within the namespace was not initialized 5271(transferred to the target of the aliased method) before executing the 5272target method. 5273 5274Fixed a potential race condition on internal object deletion on the return 5275object in AcpiEvaluateObject. 5276 5277Integrated a fix for resource descriptors where both _MEM and _MTP were 5278being extracted instead of just _MEM. (i.e. bitmask was incorrectly too 5279wide, 0x0F instead of 0x03.) 5280 5281Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, preventing a 5282fault in some cases. 5283 5284Updated Notify() values for debug statements in evmisc.c 5285 5286Return proper status from AcpiUtMutexInitialize, not just simply AE_OK. 5287 5288Code and Data Size: Current and previous core subsystem library sizes are 5289shown below. These are the code and data sizes for the acpica.lib produced 5290by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5291any ACPI driver or OSPM code. The debug version of the code includes the 5292debug output trace mechanism and has a much larger code and data size. Note 5293that these values will vary depending on the efficiency of the compiler and 5294the compiler options used during generation. 5295 5296 Previous Release: 5297 5298 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 5299 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 5300 Current Release: 5301 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 5302 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 5303 5304---------------------------------------- 530511 March 2004. Summary of changes for version 20040311: 5306 53071) ACPI CA Core Subsystem: 5308 5309Fixed a problem where errors occurring during the parse phase of control 5310method execution did not abort cleanly. For example, objects created and 5311installed in the namespace were not deleted. This caused all subsequent 5312invocations of the method to return the AE_ALREADY_EXISTS exception. 5313 5314Implemented a mechanism to force a control method to "Serialized" execution 5315if the method attempts to create namespace objects. (The root of the 5316AE_ALREADY_EXISTS problem.) 5317 5318Implemented support for the predefined _OSI "internal" control method. 5319Initial supported strings are "Linux", "Windows 2000", "Windows 2001", and 5320"Windows 2001.1", and can be easily upgraded for new strings as necessary. 5321This feature will allow "other" operating systems to execute the fully 5322tested, "Windows" code path through the ASL code 5323 5324Global Lock Support: Now allows multiple acquires and releases with any 5325internal thread. Removed concept of "owning thread" for this special mutex. 5326 5327Fixed two functions that were inappropriately declaring large objects on the 5328CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage during 5329method execution considerably. 5330 5331Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the 5332S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT. 5333 5334Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs 5335defined on the machine. 5336 5337Implemented two runtime options: One to force all control method execution 5338to "Serialized" to mimic Windows behavior, another to disable _OSI support 5339if it causes problems on a given machine. 5340 5341Code and Data Size: Current and previous core subsystem library sizes are 5342shown below. These are the code and data sizes for the acpica.lib produced 5343by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5344any ACPI driver or OSPM code. The debug version of the code includes the 5345debug output trace mechanism and has a much larger code and data size. Note 5346that these values will vary depending on the efficiency of the compiler and 5347the compiler options used during generation. 5348 5349 Previous Release: 5350 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 5351 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 5352 Current Release: 5353 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 5354 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 5355 53562) iASL Compiler/Disassembler: 5357 5358Fixed an array size problem for FreeBSD that would cause the compiler to 5359fault. 5360 5361---------------------------------------- 536220 February 2004. Summary of changes for version 20040220: 5363 5364 53651) ACPI CA Core Subsystem: 5366 5367Implemented execution of _SxD methods for Device objects in the 5368GetObjectInfo interface. 5369 5370Fixed calls to _SST method to pass the correct arguments. 5371 5372Added a call to _SST on wake to restore to "working" state. 5373 5374Check for End-Of-Buffer failure case in the WalkResources interface. 5375 5376Integrated fix for 64-bit alignment issue in acglobal.h by moving two 5377structures to the beginning of the file. 5378 5379After wake, clear GPE status register(s) before enabling GPEs. 5380 5381After wake, clear/enable power button. (Perhaps we should clear/enable all 5382fixed events upon wake.) 5383 5384Fixed a couple of possible memory leaks in the Namespace manager. 5385 5386Integrated latest acnetbsd.h file. 5387 5388---------------------------------------- 538911 February 2004. Summary of changes for version 20040211: 5390 5391 53921) ACPI CA Core Subsystem: 5393 5394Completed investigation and implementation of the call-by-reference 5395mechanism for control method arguments. 5396 5397Fixed a problem where a store of an object into an indexed package could 5398fail if the store occurs within a different method than the method that 5399created the package. 5400 5401Fixed a problem where the ToDecimal operator could return incorrect results. 5402 5403Fixed a problem where the CopyObject operator could fail on some of the more 5404obscure objects (e.g., Reference objects.) 5405 5406Improved the output of the Debug object to display buffer, package, and 5407index objects. 5408 5409Fixed a problem where constructs of the form "RefOf (ArgX)" did not return 5410the expected result. 5411 5412Added permanent ACPI_REPORT_ERROR macros for all instances of the 5413ACPI_AML_INTERNAL exception. 5414 5415Integrated latest version of acfreebsd.h 5416 5417---------------------------------------- 541816 January 2004. Summary of changes for version 20040116: 5419 5420The purpose of this release is primarily to update the copyright years in 5421each module, thus causing a huge number of diffs. There are a few small 5422functional changes, however. 5423 54241) ACPI CA Core Subsystem: 5425 5426Improved error messages when there is a problem finding one or more of the 5427required base ACPI tables 5428 5429Reintroduced the definition of APIC_HEADER in actbl.h 5430 5431Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h) 5432 5433Removed extraneous reference to NewObj in dsmthdat.c 5434 54352) iASL compiler 5436 5437Fixed a problem introduced in December that disabled the correct disassembly 5438of Resource Templates 5439 5440 5441---------------------------------------- 544203 December 2003. Summary of changes for version 20031203: 5443 54441) ACPI CA Core Subsystem: 5445 5446Changed the initialization of Operation Regions during subsystem 5447init to perform two entire walks of the ACPI namespace; The first 5448to initialize the regions themselves, the second to execute the 5449_REG methods. This fixed some interdependencies across _REG 5450methods found on some machines. 5451 5452Fixed a problem where a Store(Local0, Local1) could simply update 5453the object reference count, and not create a new copy of the 5454object if the Local1 is uninitialized. 5455 5456Implemented support for the _SST reserved method during sleep 5457transitions. 5458 5459Implemented support to clear the SLP_TYP and SLP_EN bits when 5460waking up, this is apparently required by some machines. 5461 5462When sleeping, clear the wake status only if SleepState is not S5. 5463 5464Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect 5465pointer arithmetic advanced a string pointer too far. 5466 5467Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer 5468could be returned if the requested table has not been loaded. 5469 5470Within the support for IRQ resources, restructured the handling of 5471the active and edge/level bits. 5472 5473Fixed a few problems in AcpiPsxExecute() where memory could be 5474leaked under certain error conditions. 5475 5476Improved error messages for the cases where the ACPI mode could 5477not be entered. 5478 5479Code and Data Size: Current and previous core subsystem library 5480sizes are shown below. These are the code and data sizes for the 5481acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 5482these values do not include any ACPI driver or OSPM code. The 5483debug version of the code includes the debug output trace 5484mechanism and has a much larger code and data size. Note that 5485these values will vary depending on the efficiency of the compiler 5486and the compiler options used during generation. 5487 5488 Previous Release (20031029): 5489 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 5490 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 5491 Current Release: 5492 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 5493 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 5494 54952) iASL Compiler/Disassembler: 5496 5497Implemented a fix for the iASL disassembler where a bad index was 5498generated. This was most noticeable on 64-bit platforms 5499 5500 5501---------------------------------------- 550229 October 2003. Summary of changes for version 20031029: 5503 55041) ACPI CA Core Subsystem: 5505 5506 5507Fixed a problem where a level-triggered GPE with an associated 5508_Lxx control method was incorrectly cleared twice. 5509 5510Fixed a problem with the Field support code where an access can 5511occur beyond the end-of-region if the field is non-aligned but 5512extends to the very end of the parent region (resulted in an 5513AE_AML_REGION_LIMIT exception.) 5514 5515Fixed a problem with ACPI Fixed Events where an RT Clock handler 5516would not get invoked on an RTC event. The RTC event bitmasks for 5517the PM1 registers were not being initialized properly. 5518 5519Implemented support for executing _STA and _INI methods for 5520Processor objects. Although this is currently not part of the 5521ACPI specification, there is existing ASL code that depends on the 5522init-time execution of these methods. 5523 5524Implemented and deployed a GetDescriptorName function to decode 5525the various types of internal descriptors. Guards against null 5526descriptors during debug output also. 5527 5528Implemented and deployed a GetNodeName function to extract the 4- 5529character namespace node name. This function simplifies the debug 5530and error output, as well as guarding against null pointers during 5531output. 5532 5533Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to 5534simplify the debug and error output of 64-bit integers. This 5535macro replaces the HIDWORD and LODWORD macros for dumping these 5536integers. 5537 5538Updated the implementation of the Stall() operator to only call 5539AcpiOsStall(), and also return an error if the operand is larger 5540than 255. This preserves the required behavior of not 5541relinquishing the processor, as would happen if AcpiOsSleep() was 5542called for "long stalls". 5543 5544Constructs of the form "Store(LocalX,LocalX)" where LocalX is not 5545initialized are now treated as NOOPs. 5546 5547Cleaned up a handful of warnings during 64-bit generation. 5548 5549Fixed a reported error where and incorrect GPE number was passed 5550to the GPE dispatch handler. This value is only used for error 5551output, however. Used this opportunity to clean up and streamline 5552the GPE dispatch code. 5553 5554Code and Data Size: Current and previous core subsystem library 5555sizes are shown below. These are the code and data sizes for the 5556acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 5557these values do not include any ACPI driver or OSPM code. The 5558 5559debug version of the code includes the debug output trace 5560mechanism and has a much larger code and data size. Note that 5561these values will vary depending on the efficiency of the compiler 5562and the compiler options used during generation. 5563 5564 Previous Release (20031002): 5565 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 5566 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 5567 Current Release: 5568 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 5569 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 5570 5571 55722) iASL Compiler/Disassembler: 5573 5574Updated the iASL compiler to return an error if the operand to the 5575Stall() operator is larger than 255. 5576 5577 5578---------------------------------------- 557902 October 2003. Summary of changes for version 20031002: 5580 5581 55821) ACPI CA Core Subsystem: 5583 5584Fixed a problem with Index Fields where the index was not 5585incremented for fields that require multiple writes to the 5586index/data registers (Fields that are wider than the data 5587register.) 5588 5589Fixed a problem with all Field objects where a write could go 5590beyond the end-of-field if the field was larger than the access 5591granularity and therefore required multiple writes to complete the 5592request. An extra write beyond the end of the field could happen 5593inadvertently. 5594 5595Fixed a problem with Index Fields where a BUFFER_OVERFLOW error 5596would incorrectly be returned if the width of the Data Register 5597was larger than the specified field access width. 5598 5599Completed fixes for LoadTable() and Unload() and verified their 5600operation. Implemented full support for the "DdbHandle" object 5601throughout the ACPI CA subsystem. 5602 5603Implemented full support for the MADT and ECDT tables in the ACPI 5604CA header files. Even though these tables are not directly 5605consumed by ACPI CA, the header definitions are useful for ACPI 5606device drivers. 5607 5608Integrated resource descriptor fixes posted to the Linux ACPI 5609list. This included checks for minimum descriptor length, and 5610support for trailing NULL strings within descriptors that have 5611optional string elements. 5612 5613Code and Data Size: Current and previous core subsystem library 5614sizes are shown below. These are the code and data sizes for the 5615acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 5616these values do not include any ACPI driver or OSPM code. The 5617debug version of the code includes the debug output trace 5618mechanism and has a much larger code and data size. Note that 5619these values will vary depending on the efficiency of the compiler 5620and the compiler options used during generation. 5621 5622 Previous Release (20030918): 5623 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 5624 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 5625 Current Release: 5626 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 5627 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 5628 5629 56302) iASL Compiler: 5631 5632Implemented detection of non-ASCII characters within the input 5633source ASL file. This catches attempts to compile binary (AML) 5634files early in the compile, with an informative error message. 5635 5636Fixed a problem where the disassembler would fault if the output 5637filename could not be generated or if the output file could not be 5638opened. 5639 5640---------------------------------------- 564118 September 2003. Summary of changes for version 20030918: 5642 5643 56441) ACPI CA Core Subsystem: 5645 5646Found and fixed a longstanding problem with the late execution of 5647the various deferred AML opcodes (such as Operation Regions, 5648Buffer Fields, Buffers, and Packages). If the name string 5649specified for the name of the new object placed the object in a 5650scope other than the current scope, the initialization/execution 5651of the opcode failed. The solution to this problem was to 5652implement a mechanism where the late execution of such opcodes 5653does not attempt to lookup/create the name a second time in an 5654incorrect scope. This fixes the "region size computed 5655incorrectly" problem. 5656 5657Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a 5658Global Lock AE_BAD_PARAMETER error. 5659 5660Fixed several 64-bit issues with prototypes, casting and data 5661types. 5662 5663Removed duplicate prototype from acdisasm.h 5664 5665Fixed an issue involving EC Operation Region Detach (Shaohua Li) 5666 5667Code and Data Size: Current and previous core subsystem library 5668sizes are shown below. These are the code and data sizes for the 5669acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 5670these values do not include any ACPI driver or OSPM code. The 5671debug version of the code includes the debug output trace 5672mechanism and has a much larger code and data size. Note that 5673these values will vary depending on the efficiency of the compiler 5674and the compiler options used during generation. 5675 5676 Previous Release: 5677 5678 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 5679 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 5680 Current Release: 5681 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 5682 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 5683 5684 56852) Linux: 5686 5687Fixed the AcpiOsSleep implementation in osunixxf.c to pass the 5688correct sleep time in seconds. 5689 5690---------------------------------------- 569114 July 2003. Summary of changes for version 20030619: 5692 56931) ACPI CA Core Subsystem: 5694 5695Parse SSDTs in order discovered, as opposed to reverse order 5696(Hrvoje Habjanic) 5697 5698Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas 5699Klausner, 5700 Nate Lawson) 5701 5702 57032) Linux: 5704 5705Dynamically allocate SDT list (suggested by Andi Kleen) 5706 5707proc function return value cleanups (Andi Kleen) 5708 5709Correctly handle NMI watchdog during long stalls (Andrew Morton) 5710 5711Make it so acpismp=force works (reported by Andrew Morton) 5712 5713 5714---------------------------------------- 571519 June 2003. Summary of changes for version 20030619: 5716 57171) ACPI CA Core Subsystem: 5718 5719Fix To/FromBCD, eliminating the need for an arch-specific #define. 5720 5721Do not acquire a semaphore in the S5 shutdown path. 5722 5723Fix ex_digits_needed for 0. (Takayoshi Kochi) 5724 5725Fix sleep/stall code reversal. (Andi Kleen) 5726 5727Revert a change having to do with control method calling 5728semantics. 5729 57302) Linux: 5731 5732acpiphp update (Takayoshi Kochi) 5733 5734Export acpi_disabled for sonypi (Stelian Pop) 5735 5736Mention acpismp=force in config help 5737 5738Re-add acpitable.c and acpismp=force. This improves backwards 5739 5740compatibility and also cleans up the code to a significant degree. 5741 5742Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge) 5743 5744---------------------------------------- 574522 May 2003. Summary of changes for version 20030522: 5746 57471) ACPI CA Core Subsystem: 5748 5749Found and fixed a reported problem where an AE_NOT_FOUND error 5750occurred occasionally during _BST evaluation. This turned out to 5751be an Owner ID allocation issue where a called method did not get 5752a new ID assigned to it. Eventually, (after 64k calls), the Owner 5753ID UINT16 would wraparound so that the ID would be the same as the 5754caller's and the called method would delete the caller's 5755namespace. 5756 5757Implemented extended error reporting for control methods that are 5758aborted due to a run-time exception. Output includes the exact 5759AML instruction that caused the method abort, a dump of the method 5760locals and arguments at the time of the abort, and a trace of all 5761nested control method calls. 5762 5763Modified the interpreter to allow the creation of buffers of zero 5764length from the AML code. Implemented new code to ensure that no 5765attempt is made to actually allocate a memory buffer (of length 5766zero) - instead, a simple buffer object with a NULL buffer pointer 5767and length zero is created. A warning is no longer issued when 5768the AML attempts to create a zero-length buffer. 5769 5770Implemented a workaround for the "leading asterisk issue" in 5771_HIDs, _UIDs, and _CIDs in the AML interpreter. One leading 5772asterisk is automatically removed if present in any HID, UID, or 5773CID strings. The iASL compiler will still flag this asterisk as 5774an error, however. 5775 5776Implemented full support for _CID methods that return a package of 5777multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface 5778now additionally returns a device _CID list if present. This 5779required a change to the external interface in order to pass an 5780ACPI_BUFFER object as a parameter since the _CID list is of 5781variable length. 5782 5783Fixed a problem with the new AE_SAME_HANDLER exception where 5784handler initialization code did not know about this exception. 5785 5786Code and Data Size: Current and previous core subsystem library 5787sizes are shown below. These are the code and data sizes for the 5788acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 5789these values do not include any ACPI driver or OSPM code. The 5790debug version of the code includes the debug output trace 5791mechanism and has a much larger code and data size. Note that 5792these values will vary depending on the efficiency of the compiler 5793and the compiler options used during generation. 5794 5795 Previous Release (20030509): 5796 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 5797 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 5798 Current Release: 5799 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 5800 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 5801 5802 58032) Linux: 5804 5805Fixed a bug in which we would reinitialize the ACPI interrupt 5806after it was already working, thus disabling all ACPI and the IRQs 5807for any other device sharing the interrupt. (Thanks to Stian 5808Jordet) 5809 5810Toshiba driver update (John Belmonte) 5811 5812Return only 0 or 1 for our interrupt handler status (Andrew 5813Morton) 5814 5815 58163) iASL Compiler: 5817 5818Fixed a reported problem where multiple (nested) ElseIf() 5819statements were not handled correctly by the compiler, resulting 5820in incorrect warnings and incorrect AML code. This was a problem 5821in both the ASL parser and the code generator. 5822 5823 58244) Documentation: 5825 5826Added changes to existing interfaces, new exception codes, and new 5827text concerning reference count object management versus garbage 5828collection. 5829 5830---------------------------------------- 583109 May 2003. Summary of changes for version 20030509. 5832 5833 58341) ACPI CA Core Subsystem: 5835 5836Changed the subsystem initialization sequence to hold off 5837installation of address space handlers until the hardware has been 5838initialized and the system has entered ACPI mode. This is because 5839the installation of space handlers can cause _REG methods to be 5840run. Previously, the _REG methods could potentially be run before 5841ACPI mode was enabled. 5842 5843Fixed some memory leak issues related to address space handler and 5844notify handler installation. There were some problems with the 5845reference count mechanism caused by the fact that the handler 5846objects are shared across several namespace objects. 5847 5848Fixed a reported problem where reference counts within the 5849namespace were not properly updated when named objects created by 5850method execution were deleted. 5851 5852Fixed a reported problem where multiple SSDTs caused a deletion 5853issue during subsystem termination. Restructured the table data 5854structures to simplify the linked lists and the related code. 5855 5856Fixed a problem where the table ID associated with secondary 5857tables (SSDTs) was not being propagated into the namespace objects 5858created by those tables. This would only present a problem for 5859tables that are unloaded at run-time, however. 5860 5861Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE 5862type as the length parameter (instead of UINT32). 5863 5864Solved a long-standing problem where an ALREADY_EXISTS error 5865appears on various systems. This problem could happen when there 5866are multiple PCI_Config operation regions under a single PCI root 5867bus. This doesn't happen very frequently, but there are some 5868systems that do this in the ASL. 5869 5870Fixed a reported problem where the internal DeleteNode function 5871was incorrectly handling the case where a namespace node was the 5872first in the parent's child list, and had additional peers (not 5873the only child, but first in the list of children.) 5874 5875Code and Data Size: Current core subsystem library sizes are shown 5876below. These are the code and data sizes for the acpica.lib 5877produced by the Microsoft Visual C++ 6.0 compiler, and these 5878values do not include any ACPI driver or OSPM code. The debug 5879version of the code includes the debug output trace mechanism and 5880has a much larger code and data size. Note that these values will 5881vary depending on the efficiency of the compiler and the compiler 5882options used during generation. 5883 5884 Previous Release 5885 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 5886 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 5887 Current Release: 5888 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 5889 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 5890 5891 58922) Linux: 5893 5894Allow ":" in OS override string (Ducrot Bruno) 5895 5896Kobject fix (Greg KH) 5897 5898 58993 iASL Compiler/Disassembler: 5900 5901Fixed a problem in the generation of the C source code files (AML 5902is emitted in C source statements for BIOS inclusion) where the 5903Ascii dump that appears within a C comment at the end of each line 5904could cause a compile time error if the AML sequence happens to 5905have an open comment or close comment sequence embedded. 5906 5907 5908---------------------------------------- 590924 April 2003. Summary of changes for version 20030424. 5910 5911 59121) ACPI CA Core Subsystem: 5913 5914Support for big-endian systems has been implemented. Most of the 5915support has been invisibly added behind big-endian versions of the 5916ACPI_MOVE_* macros. 5917 5918Fixed a problem in AcpiHwDisableGpeBlock() and 5919AcpiHwClearGpeBlock() where an incorrect offset was passed to the 5920low level hardware write routine. The offset parameter was 5921actually eliminated from the low level read/write routines because 5922they had become obsolete. 5923 5924Fixed a problem where a handler object was deleted twice during 5925the removal of a fixed event handler. 5926 5927 59282) Linux: 5929 5930A fix for SMP systems with link devices was contributed by 5931 5932Compaq's Dan Zink. 5933 5934(2.5) Return whether we handled the interrupt in our IRQ handler. 5935(Linux ISRs no longer return void, so we can propagate the handler 5936return value from the ACPI CA core back to the OS.) 5937 5938 5939 59403) Documentation: 5941 5942The ACPI CA Programmer Reference has been updated to reflect new 5943interfaces and changes to existing interfaces. 5944 5945---------------------------------------- 594628 March 2003. Summary of changes for version 20030328. 5947 59481) ACPI CA Core Subsystem: 5949 5950The GPE Block Device support has been completed. New interfaces 5951are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event 5952interfaces (enable, disable, clear, getstatus) have been split 5953into separate interfaces for Fixed Events and General Purpose 5954Events (GPEs) in order to support GPE Block Devices properly. 5955 5956Fixed a problem where the error message "Failed to acquire 5957semaphore" would appear during operations on the embedded 5958controller (EC). 5959 5960Code and Data Size: Current core subsystem library sizes are shown 5961below. These are the code and data sizes for the acpica.lib 5962produced by the Microsoft Visual C++ 6.0 compiler, and these 5963values do not include any ACPI driver or OSPM code. The debug 5964version of the code includes the debug output trace mechanism and 5965has a much larger code and data size. Note that these values will 5966vary depending on the efficiency of the compiler and the compiler 5967options used during generation. 5968 5969 Previous Release 5970 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 5971 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 5972 Current Release: 5973 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 5974 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 5975 5976 5977---------------------------------------- 597828 February 2003. Summary of changes for version 20030228. 5979 5980 59811) ACPI CA Core Subsystem: 5982 5983The GPE handling and dispatch code has been completely overhauled 5984in preparation for support of GPE Block Devices (ID ACPI0006). 5985This affects internal data structures and code only; there should 5986be no differences visible externally. One new file has been 5987added, evgpeblk.c 5988 5989The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only 5990fields that are used to determine the GPE block lengths. The 5991REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address 5992structures are ignored. This is per the ACPI specification but it 5993isn't very clear. The full 256 Block 0/1 GPEs are now supported 5994(the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128). 5995 5996In the SCI interrupt handler, removed the read of the PM1_CONTROL 5997register to look at the SCI_EN bit. On some machines, this read 5998causes an SMI event and greatly slows down SCI events. (This may 5999in fact be the cause of slow battery status response on some 6000systems.) 6001 6002Fixed a problem where a store of a NULL string to a package object 6003could cause the premature deletion of the object. This was seen 6004during execution of the battery _BIF method on some systems, 6005resulting in no battery data being returned. 6006 6007Added AcpiWalkResources interface to simplify parsing of resource 6008lists. 6009 6010Code and Data Size: Current core subsystem library sizes are shown 6011below. These are the code and data sizes for the acpica.lib 6012produced by the Microsoft Visual C++ 6.0 compiler, and these 6013values do not include any ACPI driver or OSPM code. The debug 6014version of the code includes the debug output trace mechanism and 6015has a much larger code and data size. Note that these values will 6016vary depending on the efficiency of the compiler and the compiler 6017options used during generation. 6018 6019 Previous Release 6020 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 6021 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 6022 Current Release: 6023 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 6024 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 6025 6026 60272) Linux 6028 6029S3 fixes (Ole Rohne) 6030 6031Update ACPI PHP driver with to use new acpi_walk_resource API 6032(Bjorn Helgaas) 6033 6034Add S4BIOS support (Pavel Machek) 6035 6036Map in entire table before performing checksum (John Stultz) 6037 6038Expand the mem= cmdline to allow the specification of reserved and 6039ACPI DATA blocks (Pavel Machek) 6040 6041Never use ACPI on VISWS 6042 6043Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez) 6044 6045Revert a change that allowed P_BLK lengths to be 4 or 5. This is 6046causing us to think that some systems support C2 when they really 6047don't. 6048 6049Do not count processor objects for non-present CPUs (Thanks to 6050Dominik Brodowski) 6051 6052 60533) iASL Compiler: 6054 6055Fixed a problem where ASL include files could not be found and 6056opened. 6057 6058Added support for the _PDC reserved name. 6059 6060 6061---------------------------------------- 606222 January 2003. Summary of changes for version 20030122. 6063 6064 60651) ACPI CA Core Subsystem: 6066 6067Added a check for constructs of the form: Store (Local0, Local0) 6068where Local0 is not initialized. Apparently, some BIOS 6069programmers believe that this is a NOOP. Since this store doesn't 6070do anything anyway, the new prototype behavior will ignore this 6071error. This is a case where we can relax the strict checking in 6072the interpreter in the name of compatibility. 6073 6074 60752) Linux 6076 6077The AcpiSrc Source Conversion Utility has been released with the 6078Linux package for the first time. This is the utility that is 6079used to convert the ACPI CA base source code to the Linux version. 6080 6081(Both) Handle P_BLK lengths shorter than 6 more gracefully 6082 6083(Both) Move more headers to include/acpi, and delete an unused 6084header. 6085 6086(Both) Move drivers/acpi/include directory to include/acpi 6087 6088(Both) Boot functions don't use cmdline, so don't pass it around 6089 6090(Both) Remove include of unused header (Adrian Bunk) 6091 6092(Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since 6093the 6094former now also includes the latter, acpiphp.h only needs the one, 6095now. 6096 6097(2.5) Make it possible to select method of bios restoring after S3 6098resume. [=> no more ugly ifdefs] (Pavel Machek) 6099 6100(2.5) Make proc write interfaces work (Pavel Machek) 6101 6102(2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski) 6103 6104(2.5) Break out ACPI Perf code into its own module, under cpufreq 6105(Dominik Brodowski) 6106 6107(2.4) S4BIOS support (Ducrot Bruno) 6108 6109(2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio 6110Visinoni) 6111 6112 61133) iASL Compiler: 6114 6115Added support to disassemble SSDT and PSDTs. 6116 6117Implemented support to obtain SSDTs from the Windows registry if 6118available. 6119 6120 6121---------------------------------------- 612209 January 2003. Summary of changes for version 20030109. 6123 61241) ACPI CA Core Subsystem: 6125 6126Changed the behavior of the internal Buffer-to-String conversion 6127function. The current ACPI specification states that the contents 6128of the buffer are "converted to a string of two-character 6129hexadecimal numbers, each separated by a space". Unfortunately, 6130this definition is not backwards compatible with existing ACPI 1.0 6131implementations (although the behavior was not defined in the ACPI 61321.0 specification). The new behavior simply copies data from the 6133buffer to the string until a null character is found or the end of 6134the buffer is reached. The new String object is always null 6135terminated. This problem was seen during the generation of _BIF 6136battery data where incorrect strings were returned for battery 6137type, etc. This will also require an errata to the ACPI 6138specification. 6139 6140Renamed all instances of NATIVE_UINT and NATIVE_INT to 6141ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively. 6142 6143Copyright in all module headers (both Linux and non-Linux) has be 6144updated to 2003. 6145 6146Code and Data Size: Current core subsystem library sizes are shown 6147below. These are the code and data sizes for the acpica.lib 6148produced by the Microsoft Visual C++ 6.0 compiler, and these 6149values do not include any ACPI driver or OSPM code. The debug 6150version of the code includes the debug output trace mechanism and 6151has a much larger code and data size. Note that these values will 6152vary depending on the efficiency of the compiler and the compiler 6153options used during generation. 6154 6155 Previous Release 6156 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 6157 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 6158 Current Release: 6159 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 6160 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 6161 6162 61632) Linux 6164 6165Fixed an oops on module insertion/removal (Matthew Tippett) 6166 6167(2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante) 6168 6169(2.5) Replace pr_debug (Randy Dunlap) 6170 6171(2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski) 6172 6173(Both) Eliminate spawning of thread from timer callback, in favor 6174of schedule_work() 6175 6176(Both) Show Lid status in /proc (Zdenek OGAR Skalak) 6177 6178(Both) Added define for Fixed Function HW region (Matthew Wilcox) 6179 6180(Both) Add missing statics to button.c (Pavel Machek) 6181 6182Several changes have been made to the source code translation 6183utility that generates the Linux Code in order to make the code 6184more "Linux-like": 6185 6186All typedefs on structs and unions have been removed in keeping 6187with the Linux coding style. 6188 6189Removed the non-Linux SourceSafe module revision number from each 6190module header. 6191 6192Completed major overhaul of symbols to be lowercased for linux. 6193Doubled the number of symbols that are lowercased. 6194 6195Fixed a problem where identifiers within procedure headers and 6196within quotes were not fully lower cased (they were left with a 6197starting capital.) 6198 6199Some C macros whose only purpose is to allow the generation of 16- 6200bit code are now completely removed in the Linux code, increasing 6201readability and maintainability. 6202 6203---------------------------------------- 6204 620512 December 2002. Summary of changes for version 20021212. 6206 6207 62081) ACPI CA Core Subsystem: 6209 6210Fixed a problem where the creation of a zero-length AML Buffer 6211would cause a fault. 6212 6213Fixed a problem where a Buffer object that pointed to a static AML 6214buffer (in an ACPI table) could inadvertently be deleted, causing 6215memory corruption. 6216 6217Fixed a problem where a user buffer (passed in to the external 6218ACPI CA interfaces) could be overwritten if the buffer was too 6219small to complete the operation, causing memory corruption. 6220 6221Fixed a problem in the Buffer-to-String conversion code where a 6222string of length one was always returned, regardless of the size 6223of the input Buffer object. 6224 6225Removed the NATIVE_CHAR data type across the entire source due to 6226lack of need and lack of consistent use. 6227 6228Code and Data Size: Current core subsystem library sizes are shown 6229below. These are the code and data sizes for the acpica.lib 6230produced by the Microsoft Visual C++ 6.0 compiler, and these 6231values do not include any ACPI driver or OSPM code. The debug 6232version of the code includes the debug output trace mechanism and 6233has a much larger code and data size. Note that these values will 6234vary depending on the efficiency of the compiler and the compiler 6235options used during generation. 6236 6237 Previous Release 6238 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 6239 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 6240 Current Release: 6241 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 6242 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 6243 6244 6245---------------------------------------- 624605 December 2002. Summary of changes for version 20021205. 6247 62481) ACPI CA Core Subsystem: 6249 6250Fixed a problem where a store to a String or Buffer object could 6251cause corruption of the DSDT if the object type being stored was 6252the same as the target object type and the length of the object 6253being stored was equal to or smaller than the original (existing) 6254target object. This was seen to cause corruption of battery _BIF 6255buffers if the _BIF method modified the buffer on the fly. 6256 6257Fixed a problem where an internal error was generated if a control 6258method invocation was used in an OperationRegion, Buffer, or 6259Package declaration. This was caused by the deferred parsing of 6260the control method and thus the deferred creation of the internal 6261method object. The solution to this problem was to create the 6262internal method object at the moment the method is encountered in 6263the first pass - so that subsequent references to the method will 6264able to obtain the required parameter count and thus properly 6265parse the method invocation. This problem presented itself as an 6266AE_AML_INTERNAL during the pass 1 parse phase during table load. 6267 6268Fixed a problem where the internal String object copy routine did 6269not always allocate sufficient memory for the target String object 6270and caused memory corruption. This problem was seen to cause 6271"Allocation already present in list!" errors as memory allocation 6272became corrupted. 6273 6274Implemented a new function for the evaluation of namespace objects 6275that allows the specification of the allowable return object 6276types. This simplifies a lot of code that checks for a return 6277object of one or more specific objects returned from the 6278evaluation (such as _STA, etc.) This may become and external 6279function if it would be useful to ACPI-related drivers. 6280 6281Completed another round of prefixing #defines with "ACPI_" for 6282clarity. 6283 6284Completed additional code restructuring to allow more modular 6285linking for iASL compiler and AcpiExec. Several files were split 6286creating new files. New files: nsparse.c dsinit.c evgpe.c 6287 6288Implemented an abort mechanism to terminate an executing control 6289method via the AML debugger. This feature is useful for debugging 6290control methods that depend (wait) for specific hardware 6291responses. 6292 6293Code and Data Size: Current core subsystem library sizes are shown 6294below. These are the code and data sizes for the acpica.lib 6295produced by the Microsoft Visual C++ 6.0 compiler, and these 6296values do not include any ACPI driver or OSPM code. The debug 6297version of the code includes the debug output trace mechanism and 6298has a much larger code and data size. Note that these values will 6299vary depending on the efficiency of the compiler and the compiler 6300options used during generation. 6301 6302 Previous Release 6303 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 6304 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 6305 Current Release: 6306 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 6307 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 6308 6309 63102) iASL Compiler/Disassembler 6311 6312Fixed a compiler code generation problem for "Interrupt" Resource 6313Descriptors. If specified in the ASL, the optional "Resource 6314Source Index" and "Resource Source" fields were not inserted into 6315the correct location within the AML resource descriptor, creating 6316an invalid descriptor. 6317 6318Fixed a disassembler problem for "Interrupt" resource descriptors. 6319The optional "Resource Source Index" and "Resource Source" fields 6320were ignored. 6321 6322 6323---------------------------------------- 632422 November 2002. Summary of changes for version 20021122. 6325 6326 63271) ACPI CA Core Subsystem: 6328 6329Fixed a reported problem where an object stored to a Method Local 6330or Arg was not copied to a new object during the store - the 6331object pointer was simply copied to the Local/Arg. This caused 6332all subsequent operations on the Local/Arg to also affect the 6333original source of the store operation. 6334 6335Fixed a problem where a store operation to a Method Local or Arg 6336was not completed properly if the Local/Arg contained a reference 6337(from RefOf) to a named field. The general-purpose store-to- 6338namespace-node code is now used so that this case is handled 6339automatically. 6340 6341Fixed a problem where the internal object copy routine would cause 6342a protection fault if the object being copied was a Package and 6343contained either 1) a NULL package element or 2) a nested sub- 6344package. 6345 6346Fixed a problem with the GPE initialization that resulted from an 6347ambiguity in the ACPI specification. One section of the 6348specification states that both the address and length of the GPE 6349block must be zero if the block is not supported. Another section 6350implies that only the address need be zero if the block is not 6351supported. The code has been changed so that both the address and 6352the length must be non-zero to indicate a valid GPE block (i.e., 6353if either the address or the length is zero, the GPE block is 6354invalid.) 6355 6356Code and Data Size: Current core subsystem library sizes are shown 6357below. These are the code and data sizes for the acpica.lib 6358produced by the Microsoft Visual C++ 6.0 compiler, and these 6359values do not include any ACPI driver or OSPM code. The debug 6360version of the code includes the debug output trace mechanism and 6361has a much larger code and data size. Note that these values will 6362vary depending on the efficiency of the compiler and the compiler 6363options used during generation. 6364 6365 Previous Release 6366 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 6367 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 6368 Current Release: 6369 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 6370 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 6371 6372 63732) Linux 6374 6375Cleaned up EC driver. Exported an external EC read/write 6376interface. By going through this, other drivers (most notably 6377sonypi) will be able to serialize access to the EC. 6378 6379 63803) iASL Compiler/Disassembler 6381 6382Implemented support to optionally generate include files for both 6383ASM and C (the -i switch). This simplifies BIOS development by 6384automatically creating include files that contain external 6385declarations for the symbols that are created within the 6386 6387(optionally generated) ASM and C AML source files. 6388 6389 6390---------------------------------------- 639115 November 2002. Summary of changes for version 20021115. 6392 63931) ACPI CA Core Subsystem: 6394 6395Fixed a memory leak problem where an error during resolution of 6396 6397method arguments during a method invocation from another method 6398failed to cleanup properly by deleting all successfully resolved 6399argument objects. 6400 6401Fixed a problem where the target of the Index() operator was not 6402correctly constructed if the source object was a package. This 6403problem has not been detected because the use of a target operand 6404with Index() is very rare. 6405 6406Fixed a problem with the Index() operator where an attempt was 6407made to delete the operand objects twice. 6408 6409Fixed a problem where an attempt was made to delete an operand 6410twice during execution of the CondRefOf() operator if the target 6411did not exist. 6412 6413Implemented the first of perhaps several internal create object 6414functions that create and initialize a specific object type. This 6415consolidates duplicated code wherever the object is created, thus 6416shrinking the size of the subsystem. 6417 6418Implemented improved debug/error messages for errors that occur 6419during nested method invocations. All executing method pathnames 6420are displayed (with the error) as the call stack is unwound - thus 6421simplifying debug. 6422 6423Fixed a problem introduced in the 10/02 release that caused 6424premature deletion of a buffer object if a buffer was used as an 6425ASL operand where an integer operand is required (Thus causing an 6426implicit object conversion from Buffer to Integer.) The change in 6427the 10/02 release was attempting to fix a memory leak (albeit 6428incorrectly.) 6429 6430Code and Data Size: Current core subsystem library sizes are shown 6431below. These are the code and data sizes for the acpica.lib 6432produced by the Microsoft Visual C++ 6.0 compiler, and these 6433values do not include any ACPI driver or OSPM code. The debug 6434version of the code includes the debug output trace mechanism and 6435has a much larger code and data size. Note that these values will 6436vary depending on the efficiency of the compiler and the compiler 6437options used during generation. 6438 6439 Previous Release 6440 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 6441 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 6442 Current Release: 6443 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 6444 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 6445 6446 64472) Linux 6448 6449Changed the implementation of the ACPI semaphores to use down() 6450instead of down_interruptable(). It is important that the 6451execution of ACPI control methods not be interrupted by signals. 6452Methods must run to completion, or the system may be left in an 6453unknown/unstable state. 6454 6455Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set. 6456(Shawn Starr) 6457 6458 64593) iASL Compiler/Disassembler 6460 6461 6462Changed the default location of output files. All output files 6463are now placed in the current directory by default instead of in 6464the directory of the source file. This change may affect some 6465existing makefiles, but it brings the behavior of the compiler in 6466line with other similar tools. The location of the output files 6467can be overridden with the -p command line switch. 6468 6469 6470---------------------------------------- 647111 November 2002. Summary of changes for version 20021111. 6472 6473 64740) ACPI Specification 2.0B is released and is now available at: 6475http://www.acpi.info/index.html 6476 6477 64781) ACPI CA Core Subsystem: 6479 6480Implemented support for the ACPI 2.0 SMBus Operation Regions. 6481This includes the early detection and handoff of the request to 6482the SMBus region handler (avoiding all of the complex field 6483support code), and support for the bidirectional return packet 6484from an SMBus write operation. This paves the way for the 6485development of SMBus drivers in each host operating system. 6486 6487Fixed a problem where the semaphore WAIT_FOREVER constant was 6488defined as 32 bits, but must be 16 bits according to the ACPI 6489specification. This had the side effect of causing ASL 6490Mutex/Event timeouts even though the ASL code requested a wait 6491forever. Changed all internal references to the ACPI timeout 6492parameter to 16 bits to prevent future problems. Changed the name 6493of WAIT_FOREVER to ACPI_WAIT_FOREVER. 6494 6495Code and Data Size: Current core subsystem library sizes are shown 6496below. These are the code and data sizes for the acpica.lib 6497produced by the Microsoft Visual C++ 6.0 compiler, and these 6498values do not include any ACPI driver or OSPM code. The debug 6499version of the code includes the debug output trace mechanism and 6500has a much larger code and data size. Note that these values will 6501vary depending on the efficiency of the compiler and the compiler 6502options used during generation. 6503 6504 Previous Release 6505 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 6506 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 6507 Current Release: 6508 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 6509 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 6510 6511 65122) Linux 6513 6514Module loading/unloading fixes (John Cagle) 6515 6516 65173) iASL Compiler/Disassembler 6518 6519Added support for the SMBBlockProcessCall keyword (ACPI 2.0) 6520 6521Implemented support for the disassembly of all SMBus protocol 6522keywords (SMBQuick, SMBWord, etc.) 6523 6524---------------------------------------- 652501 November 2002. Summary of changes for version 20021101. 6526 6527 65281) ACPI CA Core Subsystem: 6529 6530Fixed a problem where platforms that have a GPE1 block but no GPE0 6531block were not handled correctly. This resulted in a "GPE 6532overlap" error message. GPE0 is no longer required. 6533 6534Removed code added in the previous release that inserted nodes 6535into the namespace in alphabetical order. This caused some side- 6536effects on various machines. The root cause of the problem is 6537still under investigation since in theory, the internal ordering 6538of the namespace nodes should not matter. 6539 6540 6541Enhanced error reporting for the case where a named object is not 6542found during control method execution. The full ACPI namepath 6543(name reference) of the object that was not found is displayed in 6544this case. 6545 6546Note: as a result of the overhaul of the namespace object types in 6547the previous release, the namespace nodes for the predefined 6548scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE 6549instead of ACPI_TYPE_ANY. This simplifies the namespace 6550management code but may affect code that walks the namespace tree 6551looking for specific object types. 6552 6553Code and Data Size: Current core subsystem library sizes are shown 6554below. These are the code and data sizes for the acpica.lib 6555produced by the Microsoft Visual C++ 6.0 compiler, and these 6556values do not include any ACPI driver or OSPM code. The debug 6557version of the code includes the debug output trace mechanism and 6558has a much larger code and data size. Note that these values will 6559vary depending on the efficiency of the compiler and the compiler 6560options used during generation. 6561 6562 Previous Release 6563 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 6564 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 6565 Current Release: 6566 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 6567 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 6568 6569 65702) Linux 6571 6572Fixed a problem introduced in the previous release where the 6573Processor and Thermal objects were not recognized and installed in 6574/proc. This was related to the scope type change described above. 6575 6576 65773) iASL Compiler/Disassembler 6578 6579Implemented the -g option to get all of the required ACPI tables 6580from the registry and save them to files (Windows version of the 6581compiler only.) The required tables are the FADT, FACS, and DSDT. 6582 6583Added ACPI table checksum validation during table disassembly in 6584order to catch corrupted tables. 6585 6586 6587---------------------------------------- 658822 October 2002. Summary of changes for version 20021022. 6589 65901) ACPI CA Core Subsystem: 6591 6592Implemented a restriction on the Scope operator that the target 6593must already exist in the namespace at the time the operator is 6594encountered (during table load or method execution). In other 6595words, forward references are not allowed and Scope() cannot 6596create a new object. This changes the previous behavior where the 6597interpreter would create the name if not found. This new behavior 6598correctly enables the search-to-root algorithm during namespace 6599lookup of the target name. Because of this upsearch, this fixes 6600the known Compaq _SB_.OKEC problem and makes both the AML 6601interpreter and iASL compiler compatible with other ACPI 6602implementations. 6603 6604Completed a major overhaul of the internal ACPI object types for 6605the ACPI Namespace and the associated operand objects. Many of 6606these types had become obsolete with the introduction of the two- 6607pass namespace load. This cleanup simplifies the code and makes 6608the entire namespace load mechanism much clearer and easier to 6609understand. 6610 6611Improved debug output for tracking scope opening/closing to help 6612diagnose scoping issues. The old scope name as well as the new 6613scope name are displayed. Also improved error messages for 6614problems with ASL Mutex objects and error messages for GPE 6615problems. 6616 6617Cleaned up the namespace dump code, removed obsolete code. 6618 6619All string output (for all namespace/object dumps) now uses the 6620common ACPI string output procedure which handles escapes properly 6621and does not emit non-printable characters. 6622 6623Fixed some issues with constants in the 64-bit version of the 6624local C library (utclib.c) 6625 6626 66272) Linux 6628 6629EC Driver: No longer attempts to acquire the Global Lock at 6630interrupt level. 6631 6632 66333) iASL Compiler/Disassembler 6634 6635Implemented ACPI 2.0B grammar change that disallows all Type 1 and 66362 opcodes outside of a control method. This means that the 6637"executable" operators (versus the "namespace" operators) cannot 6638be used at the table level; they can only be used within a control 6639method. 6640 6641Implemented the restriction on the Scope() operator where the 6642target must already exist in the namespace at the time the 6643operator is encountered (during ASL compilation). In other words, 6644forward references are not allowed and Scope() cannot create a new 6645object. This makes the iASL compiler compatible with other ACPI 6646implementations and makes the Scope() implementation adhere to the 6647ACPI specification. 6648 6649Fixed a problem where namepath optimization for the Alias operator 6650was optimizing the wrong path (of the two namepaths.) This caused 6651a "Missing alias link" error message. 6652 6653Fixed a problem where an "unknown reserved name" warning could be 6654incorrectly generated for names like "_SB" when the trailing 6655underscore is not used in the original ASL. 6656 6657Fixed a problem where the reserved name check did not handle 6658NamePaths with multiple NameSegs correctly. The first nameseg of 6659the NamePath was examined instead of the last NameSeg. 6660 6661 6662---------------------------------------- 6663 666402 October 2002. Summary of changes for this release. 6665 6666 66671) ACPI CA Core Subsystem version 20021002: 6668 6669Fixed a problem where a store/copy of a string to an existing 6670string did not always set the string length properly in the String 6671object. 6672 6673Fixed a reported problem with the ToString operator where the 6674behavior was identical to the ToHexString operator instead of just 6675simply converting a raw buffer to a string data type. 6676 6677Fixed a problem where CopyObject and the other "explicit" 6678conversion operators were not updating the internal namespace node 6679type as part of the store operation. 6680 6681Fixed a memory leak during implicit source operand conversion 6682where the original object was not deleted if it was converted to a 6683new object of a different type. 6684 6685Enhanced error messages for all problems associated with namespace 6686lookups. Common procedure generates and prints the lookup name as 6687well as the formatted status. 6688 6689Completed implementation of a new design for the Alias support 6690within the namespace. The existing design did not handle the case 6691where a new object was assigned to one of the two names due to the 6692use of an explicit conversion operator, resulting in the two names 6693pointing to two different objects. The new design simply points 6694the Alias name to the original name node - not to the object. 6695This results in a level of indirection that must be handled in the 6696name resolution mechanism. 6697 6698Code and Data Size: Current core subsystem library sizes are shown 6699below. These are the code and data sizes for the acpica.lib 6700produced by the Microsoft Visual C++ 6.0 compiler, and these 6701values do not include any ACPI driver or OSPM code. The debug 6702version of the code includes the debug output trace mechanism and 6703has a larger code and data size. Note that these values will vary 6704depending on the efficiency of the compiler and the compiler 6705options used during generation. 6706 6707 Previous Release 6708 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 6709 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 6710 Current Release: 6711 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 6712 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 6713 6714 67152) Linux 6716 6717Initialize thermal driver's timer before it is used. (Knut 6718Neumann) 6719 6720Allow handling negative celsius values. (Kochi Takayoshi) 6721 6722Fix thermal management and make trip points. R/W (Pavel Machek) 6723 6724Fix /proc/acpi/sleep. (P. Christeas) 6725 6726IA64 fixes. (David Mosberger) 6727 6728Fix reversed logic in blacklist code. (Sergio Monteiro Basto) 6729 6730Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik 6731Brodowski) 6732 6733 67343) iASL Compiler/Disassembler 6735 6736Clarified some warning/error messages. 6737 6738 6739---------------------------------------- 674018 September 2002. Summary of changes for this release. 6741 6742 67431) ACPI CA Core Subsystem version 20020918: 6744 6745Fixed a reported problem with reference chaining (via the Index() 6746and RefOf() operators) in the ObjectType() and SizeOf() operators. 6747The definition of these operators includes the dereferencing of 6748all chained references to return information on the base object. 6749 6750Fixed a problem with stores to indexed package elements - the 6751existing code would not complete the store if an "implicit 6752conversion" was not performed. In other words, if the existing 6753object (package element) was to be replaced completely, the code 6754didn't handle this case. 6755 6756Relaxed typechecking on the ASL "Scope" operator to allow the 6757target name to refer to an object of type Integer, String, or 6758Buffer, in addition to the scoping object types (Device, 6759predefined Scopes, Processor, PowerResource, and ThermalZone.) 6760This allows existing AML code that has workarounds for a bug in 6761Windows to function properly. A warning is issued, however. This 6762affects both the AML interpreter and the iASL compiler. Below is 6763an example of this type of ASL code: 6764 6765 Name(DEB,0x00) 6766 Scope(DEB) 6767 { 6768 6769Fixed some reported problems with 64-bit integer support in the 6770local implementation of C library functions (clib.c) 6771 6772 67732) Linux 6774 6775Use ACPI fix map region instead of IOAPIC region, since it is 6776undefined in non-SMP. 6777 6778Ensure that the SCI has the proper polarity and trigger, even on 6779systems that do not have an interrupt override entry in the MADT. 6780 67812.5 big driver reorganization (Pat Mochel) 6782 6783Use early table mapping code from acpitable.c (Andi Kleen) 6784 6785New blacklist entries (Andi Kleen) 6786 6787Blacklist improvements. Split blacklist code out into a separate 6788file. Move checking the blacklist to very early. Previously, we 6789would use ACPI tables, and then halfway through init, check the 6790blacklist -- too late. Now, it's early enough to completely fall- 6791back to non-ACPI. 6792 6793 67943) iASL Compiler/Disassembler version 20020918: 6795 6796Fixed a problem where the typechecking code didn't know that an 6797alias could point to a method. In other words, aliases were not 6798being dereferenced during typechecking. 6799 6800 6801---------------------------------------- 680229 August 2002. Summary of changes for this release. 6803 68041) ACPI CA Core Subsystem Version 20020829: 6805 6806If the target of a Scope() operator already exists, it must be an 6807object type that actually opens a scope -- such as a Device, 6808Method, Scope, etc. This is a fatal runtime error. Similar error 6809check has been added to the iASL compiler also. 6810 6811Tightened up the namespace load to disallow multiple names in the 6812same scope. This previously was allowed if both objects were of 6813the same type. (i.e., a lookup was the same as entering a new 6814name). 6815 6816 68172) Linux 6818 6819Ensure that the ACPI interrupt has the proper trigger and 6820polarity. 6821 6822local_irq_disable is extraneous. (Matthew Wilcox) 6823 6824Make "acpi=off" actually do what it says, and not use the ACPI 6825interpreter *or* the tables. 6826 6827Added arch-neutral support for parsing SLIT and SRAT tables (Kochi 6828Takayoshi) 6829 6830 68313) iASL Compiler/Disassembler Version 20020829: 6832 6833Implemented namepath optimization for name declarations. For 6834example, a declaration like "Method (\_SB_.ABCD)" would get 6835optimized to "Method (ABCD)" if the declaration is within the 6836\_SB_ scope. This optimization is in addition to the named 6837reference path optimization first released in the previous 6838version. This would seem to complete all possible optimizations 6839for namepaths within the ASL/AML. 6840 6841If the target of a Scope() operator already exists, it must be an 6842object type that actually opens a scope -- such as a Device, 6843Method, Scope, etc. 6844 6845Implemented a check and warning for unreachable code in the same 6846block below a Return() statement. 6847 6848Fixed a problem where the listing file was not generated if the 6849compiler aborted if the maximum error count was exceeded (200). 6850 6851Fixed a problem where the typechecking of method return values was 6852broken. This includes the check for a return value when the 6853method is invoked as a TermArg (a return value is expected.) 6854 6855Fixed a reported problem where EOF conditions during a quoted 6856string or comment caused a fault. 6857 6858 6859---------------------------------------- 686015 August 2002. Summary of changes for this release. 6861 68621) ACPI CA Core Subsystem Version 20020815: 6863 6864Fixed a reported problem where a Store to a method argument that 6865contains a reference did not perform the indirect store correctly. 6866This problem was created during the conversion to the new 6867reference object model - the indirect store to a method argument 6868code was not updated to reflect the new model. 6869 6870Reworked the ACPI mode change code to better conform to ACPI 2.0, 6871handle corner cases, and improve code legibility (Kochi Takayoshi) 6872 6873Fixed a problem with the pathname parsing for the carat (^) 6874prefix. The heavy use of the carat operator by the new namepath 6875optimization in the iASL compiler uncovered a problem with the AML 6876interpreter handling of this prefix. In the case where one or 6877more carats precede a single nameseg, the nameseg was treated as 6878standalone and the search rule (to root) was inadvertently 6879applied. This could cause both the iASL compiler and the 6880interpreter to find the wrong object or to miss the error that 6881should occur if the object does not exist at that exact pathname. 6882 6883Found and fixed the problem where the HP Pavilion DSDT would not 6884load. This was a relatively minor tweak to the table loading code 6885(a problem caused by the unexpected encounter with a method 6886invocation not within a control method), but it does not solve the 6887overall issue of the execution of AML code at the table level. 6888This investigation is still ongoing. 6889 6890Code and Data Size: Current core subsystem library sizes are shown 6891below. These are the code and data sizes for the acpica.lib 6892produced by the Microsoft Visual C++ 6.0 compiler, and these 6893values do not include any ACPI driver or OSPM code. The debug 6894version of the code includes the debug output trace mechanism and 6895has a larger code and data size. Note that these values will vary 6896depending on the efficiency of the compiler and the compiler 6897options used during generation. 6898 6899 Previous Release 6900 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 6901 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 6902 Current Release: 6903 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 6904 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 6905 6906 69072) Linux 6908 6909Remove redundant slab.h include (Brad Hards) 6910 6911Fix several bugs in thermal.c (Herbert Nachtnebel) 6912 6913Make CONFIG_ACPI_BOOT work properly (Pavel Machek) 6914 6915Change acpi_system_suspend to use updated irq functions (Pavel 6916Machek) 6917 6918Export acpi_get_firmware_table (Matthew Wilcox) 6919 6920Use proper root proc entry for ACPI (Kochi Takayoshi) 6921 6922Fix early-boot table parsing (Bjorn Helgaas) 6923 6924 69253) iASL Compiler/Disassembler 6926 6927Reworked the compiler options to make them more consistent and to 6928use two-letter options where appropriate. We were running out of 6929sensible letters. This may break some makefiles, so check the 6930current options list by invoking the compiler with no parameters. 6931 6932Completed the design and implementation of the ASL namepath 6933optimization option for the compiler. This option optimizes all 6934references to named objects to the shortest possible path. The 6935first attempt tries to utilize a single nameseg (4 characters) and 6936the "search-to-root" algorithm used by the interpreter. If that 6937cannot be used (because either the name is not in the search path 6938or there is a conflict with another object with the same name), 6939the pathname is optimized using the carat prefix (usually a 6940shorter string than specifying the entire path from the root.) 6941 6942Implemented support to obtain the DSDT from the Windows registry 6943(when the disassembly option is specified with no input file). 6944Added this code as the implementation for AcpiOsTableOverride in 6945the Windows OSL. Migrated the 16-bit code (used in the AcpiDump 6946utility) to scan memory for the DSDT to the AcpiOsTableOverride 6947function in the DOS OSL to make the disassembler truly OS 6948independent. 6949 6950Implemented a new option to disassemble and compile in one step. 6951When used without an input filename, this option will grab the 6952DSDT from the local machine, disassemble it, and compile it in one 6953step. 6954 6955Added a warning message for invalid escapes (a backslash followed 6956by any character other than the allowable escapes). This catches 6957the quoted string error "\_SB_" (which should be "\\_SB_" ). 6958 6959Also, there are numerous instances in the ACPI specification where 6960this error occurs. 6961 6962Added a compiler option to disable all optimizations. This is 6963basically the "compatibility mode" because by using this option, 6964the AML code will come out exactly the same as other ASL 6965compilers. 6966 6967Added error messages for incorrectly ordered dependent resource 6968functions. This includes: missing EndDependentFn macro at end of 6969dependent resource list, nested dependent function macros (both 6970start and end), and missing StartDependentFn macro. These are 6971common errors that should be caught at compile time. 6972 6973Implemented _OSI support for the disassembler and compiler. _OSI 6974must be included in the namespace for proper disassembly (because 6975the disassembler must know the number of arguments.) 6976 6977Added an "optimization" message type that is optional (off by 6978default). This message is used for all optimizations - including 6979constant folding, integer optimization, and namepath optimization. 6980 6981---------------------------------------- 698225 July 2002. Summary of changes for this release. 6983 6984 69851) ACPI CA Core Subsystem Version 20020725: 6986 6987The AML Disassembler has been enhanced to produce compilable ASL 6988code and has been integrated into the iASL compiler (see below) as 6989well as the single-step disassembly for the AML debugger and the 6990disassembler for the AcpiDump utility. All ACPI 2.0A opcodes, 6991resource templates and macros are fully supported. The 6992disassembler has been tested on over 30 different AML files, 6993producing identical AML when the resulting disassembled ASL file 6994is recompiled with the same ASL compiler. 6995 6996Modified the Resource Manager to allow zero interrupts and zero 6997dma channels during the GetCurrentResources call. This was 6998causing problems on some platforms. 6999 7000Added the AcpiOsRedirectOutput interface to the OSL to simplify 7001output redirection for the AcpiOsPrintf and AcpiOsVprintf 7002interfaces. 7003 7004Code and Data Size: Current core subsystem library sizes are shown 7005below. These are the code and data sizes for the acpica.lib 7006produced by the Microsoft Visual C++ 6.0 compiler, and these 7007values do not include any ACPI driver or OSPM code. The debug 7008version of the code includes the debug output trace mechanism and 7009has a larger code and data size. Note that these values will vary 7010depending on the efficiency of the compiler and the compiler 7011options used during generation. 7012 7013 Previous Release 7014 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 7015 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 7016 Current Release: 7017 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 7018 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 7019 7020 70212) Linux 7022 7023Fixed a panic in the EC driver (Dominik Brodowski) 7024 7025Implemented checksum of the R/XSDT itself during Linux table scan 7026(Richard Schaal) 7027 7028 70293) iASL compiler 7030 7031The AML disassembler is integrated into the compiler. The "-d" 7032option invokes the disassembler to completely disassemble an 7033input AML file, producing as output a text ASL file with the 7034extension ".dsl" (to avoid name collisions with existing .asl 7035source files.) A future enhancement will allow the disassembler 7036to obtain the BIOS DSDT from the registry under Windows. 7037 7038Fixed a problem with the VendorShort and VendorLong resource 7039descriptors where an invalid AML sequence was created. 7040 7041Implemented a fix for BufferData term in the ASL parser. It was 7042inadvertently defined twice, allowing invalid syntax to pass and 7043causing reduction conflicts. 7044 7045Fixed a problem where the Ones opcode could get converted to a 7046value of zero if "Ones" was used where a byte, word or dword value 7047was expected. The 64-bit value is now truncated to the correct 7048size with the correct value. 7049 7050 7051 7052---------------------------------------- 705302 July 2002. Summary of changes for this release. 7054 7055 70561) ACPI CA Core Subsystem Version 20020702: 7057 7058The Table Manager code has been restructured to add several new 7059features. Tables that are not required by the core subsystem 7060(other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer 7061validated in any way and are returned from AcpiGetFirmwareTable if 7062requested. The AcpiOsTableOverride interface is now called for 7063each table that is loaded by the subsystem in order to allow the 7064host to override any table it chooses. Previously, only the DSDT 7065could be overridden. Added one new files, tbrsdt.c and 7066tbgetall.c. 7067 7068Fixed a problem with the conversion of internal package objects to 7069external objects (when a package is returned from a control 7070method.) The return buffer length was set to zero instead of the 7071proper length of the package object. 7072 7073Fixed a reported problem with the use of the RefOf and DeRefOf 7074operators when passing reference arguments to control methods. A 7075new type of Reference object is used internally for references 7076produced by the RefOf operator. 7077 7078Added additional error messages in the Resource Manager to explain 7079AE_BAD_DATA errors when they occur during resource parsing. 7080 7081Split the AcpiEnableSubsystem into two primitives to enable a 7082finer granularity initialization sequence. These two calls should 7083be called in this order: AcpiEnableSubsystem (flags), 7084AcpiInitializeObjects (flags). The flags parameter remains the 7085same. 7086 7087 70882) Linux 7089 7090Updated the ACPI utilities module to understand the new style of 7091fully resolved package objects that are now returned from the core 7092subsystem. This eliminates errors of the form: 7093 7094 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT] 7095 acpi_utils-0430 [145] acpi_evaluate_reference: 7096 Invalid element in package (not a device reference) 7097 7098The method evaluation utility uses the new buffer allocation 7099scheme instead of calling AcpiEvaluate Object twice. 7100 7101Added support for ECDT. This allows the use of the Embedded 7102 7103Controller before the namespace has been fully initialized, which 7104is necessary for ACPI 2.0 support, and for some laptops to 7105initialize properly. (Laptops using ECDT are still rare, so only 7106limited testing was performed of the added functionality.) 7107 7108Fixed memory leaks in the EC driver. 7109 7110Eliminated a brittle code structure in acpi_bus_init(). 7111 7112Eliminated the acpi_evaluate() helper function in utils.c. It is 7113no longer needed since acpi_evaluate_object can optionally 7114allocate memory for the return object. 7115 7116Implemented fix for keyboard hang when getting battery readings on 7117some systems (Stephen White) 7118 7119PCI IRQ routing update (Dominik Brodowski) 7120 7121Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC 7122support 7123 7124---------------------------------------- 712511 June 2002. Summary of changes for this release. 7126 7127 71281) ACPI CA Core Subsystem Version 20020611: 7129 7130Fixed a reported problem where constants such as Zero and One 7131appearing within _PRT packages were not handled correctly within 7132the resource manager code. Originally reported against the ASL 7133compiler because the code generator now optimizes integers to 7134their minimal AML representation (i.e. AML constants if possible.) 7135The _PRT code now handles all AML constant opcodes correctly 7136(Zero, One, Ones, Revision). 7137 7138Fixed a problem with the Concatenate operator in the AML 7139interpreter where a buffer result object was incorrectly marked as 7140not fully evaluated, causing a run-time error of AE_AML_INTERNAL. 7141 7142All package sub-objects are now fully resolved before they are 7143returned from the external ACPI interfaces. This means that name 7144strings are resolved to object handles, and constant operators 7145(Zero, One, Ones, Revision) are resolved to Integers. 7146 7147Implemented immediate resolution of the AML Constant opcodes 7148(Zero, One, Ones, Revision) to Integer objects upon detection 7149within the AML stream. This has simplified and reduced the 7150generated code size of the subsystem by eliminating about 10 7151switch statements for these constants (which previously were 7152contained in Reference objects.) The complicating issues are that 7153the Zero opcode is used as a "placeholder" for unspecified 7154optional target operands and stores to constants are defined to be 7155no-ops. 7156 7157Code and Data Size: Current core subsystem library sizes are shown 7158below. These are the code and data sizes for the acpica.lib 7159produced by the Microsoft Visual C++ 6.0 compiler, and these 7160values do not include any ACPI driver or OSPM code. The debug 7161version of the code includes the debug output trace mechanism and 7162has a larger code and data size. Note that these values will vary 7163depending on the efficiency of the compiler and the compiler 7164options used during generation. 7165 7166 Previous Release 7167 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 7168 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 7169 Current Release: 7170 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 7171 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 7172 7173 71742) Linux 7175 7176 7177Added preliminary support for obtaining _TRA data for PCI root 7178bridges (Bjorn Helgaas). 7179 7180 71813) iASL Compiler Version X2046: 7182 7183Fixed a problem where the "_DDN" reserved name was defined to be a 7184control method with one argument. There are no arguments, and 7185_DDN does not have to be a control method. 7186 7187Fixed a problem with the Linux version of the compiler where the 7188source lines printed with error messages were the wrong lines. 7189This turned out to be the "LF versus CR/LF" difference between 7190Windows and Unix. This appears to be the longstanding issue 7191concerning listing output and error messages. 7192 7193Fixed a problem with the Linux version of compiler where opcode 7194names within error messages were wrong. This was caused by a 7195slight difference in the output of the Flex tool on Linux versus 7196Windows. 7197 7198Fixed a problem with the Linux compiler where the hex output files 7199contained some garbage data caused by an internal buffer overrun. 7200 7201 7202---------------------------------------- 720317 May 2002. Summary of changes for this release. 7204 7205 72061) ACPI CA Core Subsystem Version 20020517: 7207 7208Implemented a workaround to an BIOS bug discovered on the HP 7209OmniBook where the FADT revision number and the table size are 7210inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new 7211behavior is to fallback to using only the ACPI 1.0 fields of the 7212FADT if the table is too small to be a ACPI 2.0 table as claimed 7213by the revision number. Although this is a BIOS bug, this is a 7214case where the workaround is simple enough and with no side 7215effects, so it seemed prudent to add it. A warning message is 7216issued, however. 7217 7218Implemented minimum size checks for the fixed-length ACPI tables - 7219- the FADT and FACS, as well as consistency checks between the 7220revision number and the table size. 7221 7222Fixed a reported problem in the table override support where the 7223new table pointer was incorrectly treated as a physical address 7224instead of a logical address. 7225 7226Eliminated the use of the AE_AML_ERROR exception and replaced it 7227with more descriptive codes. 7228 7229Fixed a problem where an exception would occur if an ASL Field was 7230defined with no named Field Units underneath it (used by some 7231index fields). 7232 7233Code and Data Size: Current core subsystem library sizes are shown 7234below. These are the code and data sizes for the acpica.lib 7235produced by the Microsoft Visual C++ 6.0 compiler, and these 7236values do not include any ACPI driver or OSPM code. The debug 7237version of the code includes the debug output trace mechanism and 7238has a larger code and data size. Note that these values will vary 7239depending on the efficiency of the compiler and the compiler 7240options used during generation. 7241 7242 Previous Release 7243 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 7244 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 7245 Current Release: 7246 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 7247 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 7248 7249 7250 72512) Linux 7252 7253Much work done on ACPI init (MADT and PCI IRQ routing support). 7254(Paul D. and Dominik Brodowski) 7255 7256Fix PCI IRQ-related panic on boot (Sam Revitch) 7257 7258Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno) 7259 7260Fix "MHz" typo (Dominik Brodowski) 7261 7262Fix RTC year 2000 issue (Dominik Brodowski) 7263 7264Preclude multiple button proc entries (Eric Brunet) 7265 7266Moved arch-specific code out of include/platform/aclinux.h 7267 72683) iASL Compiler Version X2044: 7269 7270Implemented error checking for the string used in the EISAID macro 7271(Usually used in the definition of the _HID object.) The code now 7272strictly enforces the PnP format - exactly 7 characters, 3 7273uppercase letters and 4 hex digits. 7274 7275If a raw string is used in the definition of the _HID object 7276(instead of the EISAID macro), the string must contain all 7277alphanumeric characters (e.g., "*PNP0011" is not allowed because 7278of the asterisk.) 7279 7280Implemented checking for invalid use of ACPI reserved names for 7281most of the name creation operators (Name, Device, Event, Mutex, 7282OperationRegion, PowerResource, Processor, and ThermalZone.) 7283Previously, this check was only performed for control methods. 7284 7285Implemented an additional check on the Name operator to emit an 7286error if a reserved name that must be implemented in ASL as a 7287control method is used. We know that a reserved name must be a 7288method if it is defined with input arguments. 7289 7290The warning emitted when a namespace object reference is not found 7291during the cross reference phase has been changed into an error. 7292The "External" directive should be used for names defined in other 7293modules. 7294 7295 72964) Tools and Utilities 7297 7298The 16-bit tools (adump16 and aexec16) have been regenerated and 7299tested. 7300 7301Fixed a problem with the output of both acpidump and adump16 where 7302the indentation of closing parentheses and brackets was not 7303 7304aligned properly with the parent block. 7305 7306 7307---------------------------------------- 730803 May 2002. Summary of changes for this release. 7309 7310 73111) ACPI CA Core Subsystem Version 20020503: 7312 7313Added support a new OSL interface that allows the host operating 7314 7315system software to override the DSDT found in the firmware - 7316AcpiOsTableOverride. With this interface, the OSL can examine the 7317version of the firmware DSDT and replace it with a different one 7318if desired. 7319 7320Added new external interfaces for accessing ACPI registers from 7321device drivers and other system software - AcpiGetRegister and 7322AcpiSetRegister. This was simply an externalization of the 7323existing AcpiHwBitRegister interfaces. 7324 7325Fixed a regression introduced in the previous build where the 7326ASL/AML CreateField operator always returned an error, 7327"destination must be a NS Node". 7328 7329Extended the maximum time (before failure) to successfully enable 7330ACPI mode to 3 seconds. 7331 7332Code and Data Size: Current core subsystem library sizes are shown 7333below. These are the code and data sizes for the acpica.lib 7334produced by the Microsoft Visual C++ 6.0 compiler, and these 7335values do not include any ACPI driver or OSPM code. The debug 7336version of the code includes the debug output trace mechanism and 7337has a larger code and data size. Note that these values will vary 7338depending on the efficiency of the compiler and the compiler 7339options used during generation. 7340 7341 Previous Release 7342 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 7343 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 7344 Current Release: 7345 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 7346 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 7347 7348 73492) Linux 7350 7351Enhanced ACPI init code for SMP. We are now fully MPS and $PIR- 7352free. While 3 out of 4 of our in-house systems work fine, the last 7353one still hangs when testing the LAPIC timer. 7354 7355Renamed many files in 2.5 kernel release to omit "acpi_" from the 7356name. 7357 7358Added warning on boot for Presario 711FR. 7359 7360Sleep improvements (Pavel Machek) 7361 7362ACPI can now be built without CONFIG_PCI enabled. 7363 7364IA64: Fixed memory map functions (JI Lee) 7365 7366 73673) iASL Compiler Version X2043: 7368 7369Added support to allow the compiler to be integrated into the MS 7370VC++ development environment for one-button compilation of single 7371files or entire projects -- with error-to-source-line mapping. 7372 7373Implemented support for compile-time constant folding for the 7374Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0 7375specification. This allows the ASL writer to use expressions 7376instead of Integer/Buffer/String constants in terms that must 7377evaluate to constants at compile time and will also simplify the 7378emitted AML in any such sub-expressions that can be folded 7379(evaluated at compile-time.) This increases the size of the 7380compiler significantly because a portion of the ACPI CA AML 7381interpreter is included within the compiler in order to pre- 7382evaluate constant expressions. 7383 7384 7385Fixed a problem with the "Unicode" ASL macro that caused the 7386compiler to fault. (This macro is used in conjunction with the 7387_STR reserved name.) 7388 7389Implemented an AML opcode optimization to use the Zero, One, and 7390Ones opcodes where possible to further reduce the size of integer 7391constants and thus reduce the overall size of the generated AML 7392code. 7393 7394Implemented error checking for new reserved terms for ACPI version 73952.0A. 7396 7397Implemented the -qr option to display the current list of ACPI 7398reserved names known to the compiler. 7399 7400Implemented the -qc option to display the current list of ASL 7401operators that are allowed within constant expressions and can 7402therefore be folded at compile time if the operands are constants. 7403 7404 74054) Documentation 7406 7407Updated the Programmer's Reference for new interfaces, data types, 7408and memory allocation model options. 7409 7410Updated the iASL Compiler User Reference to apply new format and 7411add information about new features and options. 7412 7413---------------------------------------- 741419 April 2002. Summary of changes for this release. 7415 74161) ACPI CA Core Subsystem Version 20020419: 7417 7418The source code base for the Core Subsystem has been completely 7419cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit 7420versions. The Lint option files used are included in the 7421/acpi/generate/lint directory. 7422 7423Implemented enhanced status/error checking across the entire 7424Hardware manager subsystem. Any hardware errors (reported from 7425the OSL) are now bubbled up and will abort a running control 7426method. 7427 7428 7429Fixed a problem where the per-ACPI-table integer width (32 or 64) 7430was stored only with control method nodes, causing a fault when 7431non-control method code was executed during table loading. The 7432solution implemented uses a global variable to indicate table 7433width across the entire ACPI subsystem. Therefore, ACPI CA does 7434not support mixed integer widths across different ACPI tables 7435(DSDT, SSDT). 7436 7437Fixed a problem where NULL extended fields (X fields) in an ACPI 74382.0 ACPI FADT caused the table load to fail. Although the 7439existing ACPI specification is a bit fuzzy on this topic, the new 7440behavior is to fall back on a ACPI 1.0 field if the corresponding 7441ACPI 2.0 X field is zero (even though the table revision indicates 7442a full ACPI 2.0 table.) The ACPI specification will be updated to 7443clarify this issue. 7444 7445Fixed a problem with the SystemMemory operation region handler 7446where memory was always accessed byte-wise even if the AML- 7447specified access width was larger than a byte. This caused 7448problems on systems with memory-mapped I/O. Memory is now 7449accessed with the width specified. On systems that do not support 7450non-aligned transfers, a check is made to guarantee proper address 7451alignment before proceeding in order to avoid an AML-caused 7452alignment fault within the kernel. 7453 7454 7455Fixed a problem with the ExtendedIrq resource where only one byte 7456of the 4-byte Irq field was extracted. 7457 7458Fixed the AcpiExDigitsNeeded() procedure to support _UID. This 7459function was out of date and required a rewrite. 7460 7461Code and Data Size: Current core subsystem library sizes are shown 7462below. These are the code and data sizes for the acpica.lib 7463produced by the Microsoft Visual C++ 6.0 compiler, and these 7464values do not include any ACPI driver or OSPM code. The debug 7465version of the code includes the debug output trace mechanism and 7466has a larger code and data size. Note that these values will vary 7467depending on the efficiency of the compiler and the compiler 7468options used during generation. 7469 7470 Previous Release 7471 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 7472 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 7473 Current Release: 7474 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 7475 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 7476 7477 74782) Linux 7479 7480PCI IRQ routing fixes (Dominik Brodowski) 7481 7482 74833) iASL Compiler Version X2042: 7484 7485Implemented an additional compile-time error check for a field 7486unit whose size + minimum access width would cause a run-time 7487access beyond the end-of-region. Previously, only the field size 7488itself was checked. 7489 7490The Core subsystem and iASL compiler now share a common parse 7491object in preparation for compile-time evaluation of the type 74923/4/5 ASL operators. 7493 7494 7495---------------------------------------- 7496Summary of changes for this release: 03_29_02 7497 74981) ACPI CA Core Subsystem Version 20020329: 7499 7500Implemented support for late evaluation of TermArg operands to 7501Buffer and Package objects. This allows complex expressions to be 7502used in the declarations of these object types. 7503 7504Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI 75051.0, if the field was larger than 32 bits, it was returned as a 7506buffer - otherwise it was returned as an integer. In ACPI 2.0, 7507the field is returned as a buffer only if the field is larger than 750864 bits. The TableRevision is now considered when making this 7509conversion to avoid incompatibility with existing ASL code. 7510 7511Implemented logical addressing for AcpiOsGetRootPointer. This 7512allows an RSDP with either a logical or physical address. With 7513this support, the host OS can now override all ACPI tables with 7514one logical RSDP. Includes implementation of "typed" pointer 7515support to allow a common data type for both physical and logical 7516pointers internally. This required a change to the 7517AcpiOsGetRootPointer interface. 7518 7519Implemented the use of ACPI 2.0 Generic Address Structures for all 7520GPE, Fixed Event, and PM Timer I/O. This allows the use of memory 7521mapped I/O for these ACPI features. 7522 7523Initialization now ignores not only non-required tables (All 7524tables other than the FADT, FACS, DSDT, and SSDTs), but also does 7525not validate the table headers of unrecognized tables. 7526 7527Fixed a problem where a notify handler could only be 7528installed/removed on an object of type Device. All "notify" 7529 7530objects are now supported -- Devices, Processor, Power, and 7531Thermal. 7532 7533Removed most verbosity from the ACPI_DB_INFO debug level. Only 7534critical information is returned when this debug level is enabled. 7535 7536Code and Data Size: Current core subsystem library sizes are shown 7537below. These are the code and data sizes for the acpica.lib 7538produced by the Microsoft Visual C++ 6.0 compiler, and these 7539values do not include any ACPI driver or OSPM code. The debug 7540version of the code includes the debug output trace mechanism and 7541has a larger code and data size. Note that these values will vary 7542depending on the efficiency of the compiler and the compiler 7543options used during generation. 7544 7545 Previous Release 7546 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 7547 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 7548 Current Release: 7549 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 7550 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 7551 7552 75532) Linux: 7554 7555The processor driver (acpi_processor.c) now fully supports ACPI 75562.0-based processor performance control (e.g. Intel(R) 7557SpeedStep(TM) technology) Note that older laptops that only have 7558the Intel "applet" interface are not supported through this. The 7559'limit' and 'performance' interface (/proc) are fully functional. 7560[Note that basic policy for controlling performance state 7561transitions will be included in the next version of ospmd.] The 7562idle handler was modified to more aggressively use C2, and PIIX4 7563errata handling underwent a complete overhaul (big thanks to 7564Dominik Brodowski). 7565 7566Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR- 7567based devices in the ACPI namespace are now dynamically bound 7568(associated) with their PCI counterparts (e.g. PCI1->01:00.0). 7569This allows, among other things, ACPI to resolve bus numbers for 7570subordinate PCI bridges. 7571 7572Enhanced PCI IRQ routing to get the proper bus number for _PRT 7573entries defined underneath PCI bridges. 7574 7575Added IBM 600E to bad bios list due to invalid _ADR value for 7576PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing. 7577 7578In the process of adding full MADT support (e.g. IOAPIC) for IA32 7579(acpi.c, mpparse.c) -- stay tuned. 7580 7581Added back visual differentiation between fixed-feature and 7582control-method buttons in dmesg. Buttons are also subtyped (e.g. 7583button/power/PWRF) to simplify button identification. 7584 7585We no longer use -Wno-unused when compiling debug. Please ignore 7586any "_THIS_MODULE defined but not used" messages. 7587 7588Can now shut down the system using "magic sysrq" key. 7589 7590 75913) iASL Compiler version 2041: 7592 7593Fixed a problem where conversion errors for hex/octal/decimal 7594constants were not reported. 7595 7596Implemented a fix for the General Register template Address field. 7597This field was 8 bits when it should be 64. 7598 7599Fixed a problem where errors/warnings were no longer being emitted 7600within the listing output file. 7601 7602Implemented the ACPI 2.0A restriction on ACPI Table Signatures to 7603exactly 4 characters, alphanumeric only. 7604 7605 7606 7607 7608---------------------------------------- 7609Summary of changes for this release: 03_08_02 7610 7611 76121) ACPI CA Core Subsystem Version 20020308: 7613 7614Fixed a problem with AML Fields where the use of the "AccessAny" 7615keyword could cause an interpreter error due to attempting to read 7616or write beyond the end of the parent Operation Region. 7617 7618Fixed a problem in the SystemMemory Operation Region handler where 7619an attempt was made to map memory beyond the end of the region. 7620This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY" 7621errors on some Linux systems. 7622 7623Fixed a problem where the interpreter/namespace "search to root" 7624algorithm was not functioning for some object types. Relaxed the 7625internal restriction on the search to allow upsearches for all 7626external object types as well as most internal types. 7627 7628 76292) Linux: 7630 7631We now use safe_halt() macro versus individual calls to sti | hlt. 7632 7633Writing to the processor limit interface should now work. "echo 1" 7634will increase the limit, 2 will decrease, and 0 will reset to the 7635 7636default. 7637 7638 76393) ASL compiler: 7640 7641Fixed segfault on Linux version. 7642 7643 7644---------------------------------------- 7645Summary of changes for this release: 02_25_02 7646 76471) ACPI CA Core Subsystem: 7648 7649 7650Fixed a problem where the GPE bit masks were not initialized 7651properly, causing erratic GPE behavior. 7652 7653Implemented limited support for multiple calling conventions. The 7654code can be generated with either the VPL (variable parameter 7655list, or "C") convention, or the FPL (fixed parameter list, or 7656"Pascal") convention. The core subsystem is about 3.4% smaller 7657when generated with FPL. 7658 7659 76602) Linux 7661 7662Re-add some /proc/acpi/event functionality that was lost during 7663the rewrite 7664 7665Resolved issue with /proc events for fixed-feature buttons showing 7666up as the system device. 7667 7668Fixed checks on C2/C3 latencies to be inclusive of maximum values. 7669 7670Replaced AE_ERRORs in acpi_osl.c with more specific error codes. 7671 7672Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi" 7673 7674Fixed limit interface & usage to fix bugs with passive cooling 7675hysterisis. 7676 7677Restructured PRT support. 7678 7679 7680---------------------------------------- 7681Summary of changes for this label: 02_14_02 7682 7683 76841) ACPI CA Core Subsystem: 7685 7686Implemented support in AcpiLoadTable to allow loading of FACS and 7687FADT tables. 7688 7689Suport for the now-obsolete interim 0.71 64-bit ACPI tables has 7690been removed. All 64-bit platforms should be migrated to the ACPI 76912.0 tables. The actbl71.h header has been removed from the source 7692tree. 7693 7694All C macros defined within the subsystem have been prefixed with 7695"ACPI_" to avoid collision with other system include files. 7696 7697Removed the return value for the two AcpiOsPrint interfaces, since 7698it is never used and causes lint warnings for ignoring the return 7699value. 7700 7701Added error checking to all internal mutex acquire and release 7702calls. Although a failure from one of these interfaces is 7703probably a fatal system error, these checks will cause the 7704immediate abort of the currently executing method or interface. 7705 7706Fixed a problem where the AcpiSetCurrentResources interface could 7707fault. This was a side effect of the deployment of the new memory 7708allocation model. 7709 7710Fixed a couple of problems with the Global Lock support introduced 7711in the last major build. The "common" (1.0/2.0) internal FACS was 7712being overwritten with the FACS signature and clobbering the 7713Global Lock pointer. Also, the actual firmware FACS was being 7714unmapped after construction of the "common" FACS, preventing 7715access to the actual Global Lock field within it. The "common" 7716internal FACS is no longer installed as an actual ACPI table; it 7717is used simply as a global. 7718 7719Code and Data Size: Current core subsystem library sizes are shown 7720below. These are the code and data sizes for the acpica.lib 7721produced by the Microsoft Visual C++ 6.0 compiler, and these 7722values do not include any ACPI driver or OSPM code. The debug 7723version of the code includes the debug output trace mechanism and 7724has a larger code and data size. Note that these values will vary 7725depending on the efficiency of the compiler and the compiler 7726options used during generation. 7727 7728 Previous Release (02_07_01) 7729 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 7730 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 7731 Current Release: 7732 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 7733 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 7734 7735 77362) Linux 7737 7738Updated Linux-specific code for core macro and OSL interface 7739changes described above. 7740 7741Improved /proc/acpi/event. It now can be opened only once and has 7742proper poll functionality. 7743 7744Fixed and restructured power management (acpi_bus). 7745 7746Only create /proc "view by type" when devices of that class exist. 7747 7748Fixed "charging/discharging" bug (and others) in acpi_battery. 7749 7750Improved thermal zone code. 7751 7752 77533) ASL Compiler, version X2039: 7754 7755 7756Implemented the new compiler restriction on ASL String hex/octal 7757escapes to non-null, ASCII values. An error results if an invalid 7758value is used. (This will require an ACPI 2.0 specification 7759change.) 7760 7761AML object labels that are output to the optional C and ASM source 7762are now prefixed with both the ACPI table signature and table ID 7763to help guarantee uniqueness within a large BIOS project. 7764 7765 7766---------------------------------------- 7767Summary of changes for this label: 02_01_02 7768 77691) ACPI CA Core Subsystem: 7770 7771ACPI 2.0 support is complete in the entire Core Subsystem and the 7772ASL compiler. All new ACPI 2.0 operators are implemented and all 7773other changes for ACPI 2.0 support are complete. With 7774simultaneous code and data optimizations throughout the subsystem, 7775ACPI 2.0 support has been implemented with almost no additional 7776cost in terms of code and data size. 7777 7778Implemented a new mechanism for allocation of return buffers. If 7779the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will 7780be allocated on behalf of the caller. Consolidated all return 7781buffer validation and allocation to a common procedure. Return 7782buffers will be allocated via the primary OSL allocation interface 7783since it appears that a separate pool is not needed by most users. 7784If a separate pool is required for these buffers, the caller can 7785still use the original mechanism and pre-allocate the buffer(s). 7786 7787Implemented support for string operands within the DerefOf 7788operator. 7789 7790Restructured the Hardware and Event managers to be table driven, 7791simplifying the source code and reducing the amount of generated 7792code. 7793 7794Split the common read/write low-level ACPI register bitfield 7795procedure into a separate read and write, simplifying the code 7796considerably. 7797 7798Obsoleted the AcpiOsCallocate OSL interface. This interface was 7799used only a handful of times and didn't have enough critical mass 7800for a separate interface. Replaced with a common calloc procedure 7801in the core. 7802 7803Fixed a reported problem with the GPE number mapping mechanism 7804that allows GPE1 numbers to be non-contiguous with GPE0. 7805Reorganized the GPE information and shrunk a large array that was 7806originally large enough to hold info for all possible GPEs (256) 7807to simply large enough to hold all GPEs up to the largest GPE 7808number on the machine. 7809 7810Fixed a reported problem with resource structure alignment on 64- 7811bit platforms. 7812 7813Changed the AcpiEnableEvent and AcpiDisableEvent external 7814interfaces to not require any flags for the common case of 7815enabling/disabling a GPE. 7816 7817Implemented support to allow a "Notify" on a Processor object. 7818 7819Most TBDs in comments within the source code have been resolved 7820and eliminated. 7821 7822 7823Fixed a problem in the interpreter where a standalone parent 7824prefix (^) was not handled correctly in the interpreter and 7825debugger. 7826 7827Removed obsolete and unnecessary GPE save/restore code. 7828 7829Implemented Field support in the ASL Load operator. This allows a 7830table to be loaded from a named field, in addition to loading a 7831table directly from an Operation Region. 7832 7833Implemented timeout and handle support in the external Global Lock 7834interfaces. 7835 7836Fixed a problem in the AcpiDump utility where pathnames were no 7837longer being generated correctly during the dump of named objects. 7838 7839Modified the AML debugger to give a full display of if/while 7840predicates instead of just one AML opcode at a time. (The 7841predicate can have several nested ASL statements.) The old method 7842was confusing during single stepping. 7843 7844Code and Data Size: Current core subsystem library sizes are shown 7845below. These are the code and data sizes for the acpica.lib 7846produced by the Microsoft Visual C++ 6.0 compiler, and these 7847values do not include any ACPI driver or OSPM code. The debug 7848version of the code includes the debug output trace mechanism and 7849has a larger code and data size. Note that these values will vary 7850depending on the efficiency of the compiler and the compiler 7851options used during generation. 7852 7853 Previous Release (12_18_01) 7854 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 7855 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 7856 Current Release: 7857 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 7858 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 7859 78602) Linux 7861 7862 Implemented fix for PIIX reverse throttling errata (Processor 7863driver) 7864 7865Added new Limit interface (Processor and Thermal drivers) 7866 7867New thermal policy (Thermal driver) 7868 7869Many updates to /proc 7870 7871Battery "low" event support (Battery driver) 7872 7873Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers) 7874 7875IA32 - IA64 initialization unification, no longer experimental 7876 7877Menuconfig options redesigned 7878 78793) ASL Compiler, version X2037: 7880 7881Implemented several new output features to simplify integration of 7882AML code into firmware: 1) Output the AML in C source code with 7883labels for each named ASL object. The original ASL source code 7884is interleaved as C comments. 2) Output the AML in ASM source code 7885with labels and interleaved ASL source. 3) Output the AML in 7886raw hex table form, in either C or ASM. 7887 7888Implemented support for optional string parameters to the 7889LoadTable operator. 7890 7891Completed support for embedded escape sequences within string 7892literals. The compiler now supports all single character escapes 7893as well as the Octal and Hex escapes. Note: the insertion of a 7894null byte into a string literal (via the hex/octal escape) causes 7895the string to be immediately terminated. A warning is issued. 7896 7897Fixed a problem where incorrect AML was generated for the case 7898where an ASL namepath consists of a single parent prefix ( 7899 7900) with no trailing name segments. 7901 7902The compiler has been successfully generated with a 64-bit C 7903compiler. 7904 7905 7906 7907 7908---------------------------------------- 7909Summary of changes for this label: 12_18_01 7910 79111) Linux 7912 7913Enhanced blacklist with reason and severity fields. Any table's 7914signature may now be used to identify a blacklisted system. 7915 7916Call _PIC control method to inform the firmware which interrupt 7917model the OS is using. Turn on any disabled link devices. 7918 7919Cleaned up busmgr /proc error handling (Andreas Dilger) 7920 7921 2) ACPI CA Core Subsystem: 7922 7923Implemented ACPI 2.0 semantics for the "Break" operator (Exit from 7924while loop) 7925 7926Completed implementation of the ACPI 2.0 "Continue", 7927"ConcatenateResTemplate", "DataTableRegion", and "LoadTable" 7928operators. All new ACPI 2.0 operators are now implemented in both 7929the ASL compiler and the AML interpreter. The only remaining ACPI 79302.0 task is support for the String data type in the DerefOf 7931operator. Fixed a problem with AcquireMutex where the status code 7932was lost if the caller had to actually wait for the mutex. 7933 7934Increased the maximum ASL Field size from 64K bits to 4G bits. 7935 7936Completed implementation of the external Global Lock interfaces -- 7937AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and 7938Handler parameters were added. 7939 7940Completed another pass at removing warnings and issues when 7941compiling with 64-bit compilers. The code now compiles cleanly 7942with the Intel 64-bit C/C++ compiler. Most notably, the pointer 7943add and subtract (diff) macros have changed considerably. 7944 7945 7946Created and deployed a new ACPI_SIZE type that is 64-bits wide on 794764-bit platforms, 32-bits on all others. This type is used 7948wherever memory allocation and/or the C sizeof() operator is used, 7949and affects the OSL memory allocation interfaces AcpiOsAllocate 7950and AcpiOsCallocate. 7951 7952Implemented sticky user breakpoints in the AML debugger. 7953 7954Code and Data Size: Current core subsystem library sizes are shown 7955below. These are the code and data sizes for the acpica.lib 7956produced by the Microsoft Visual C++ 6.0 compiler, and these 7957values do not include any ACPI driver or OSPM code. The debug 7958version of the code includes the debug output trace mechanism and 7959has a larger code and data size. Note that these values will vary 7960depending on the efficiency of the compiler and the compiler 7961options used during generation. 7962 7963 Previous Release (12_05_01) 7964 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 7965 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 7966 Current Release: 7967 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 7968 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 7969 7970 3) ASL Compiler, version X2034: 7971 7972Now checks for (and generates an error if detected) the use of a 7973Break or Continue statement without an enclosing While statement. 7974 7975 7976Successfully generated the compiler with the Intel 64-bit C 7977compiler. 7978 7979 ---------------------------------------- 7980Summary of changes for this label: 12_05_01 7981 7982 1) ACPI CA Core Subsystem: 7983 7984The ACPI 2.0 CopyObject operator is fully implemented. This 7985operator creates a new copy of an object (and is also used to 7986bypass the "implicit conversion" mechanism of the Store operator.) 7987 7988The ACPI 2.0 semantics for the SizeOf operator are fully 7989implemented. The change is that performing a SizeOf on a 7990reference object causes an automatic dereference of the object to 7991tha actual value before the size is evaluated. This behavior was 7992undefined in ACPI 1.0. 7993 7994The ACPI 2.0 semantics for the Extended IRQ resource descriptor 7995have been implemented. The interrupt polarity and mode are now 7996independently set. 7997 7998Fixed a problem where ASL Constants (Zero, One, Ones, Revision) 7999appearing in Package objects were not properly converted to 8000integers when the internal Package was converted to an external 8001object (via the AcpiEvaluateObject interface.) 8002 8003Fixed a problem with the namespace object deletion mechanism for 8004objects created by control methods. There were two parts to this 8005problem: 1) Objects created during the initialization phase method 8006parse were not being deleted, and 2) The object owner ID mechanism 8007to track objects was broken. 8008 8009Fixed a problem where the use of the ASL Scope operator within a 8010control method would result in an invalid opcode exception. 8011 8012Fixed a problem introduced in the previous label where the buffer 8013length required for the _PRT structure was not being returned 8014correctly. 8015 8016Code and Data Size: Current core subsystem library sizes are shown 8017below. These are the code and data sizes for the acpica.lib 8018produced by the Microsoft Visual C++ 6.0 compiler, and these 8019values do not include any ACPI driver or OSPM code. The debug 8020version of the code includes the debug output trace mechanism and 8021has a larger code and data size. Note that these values will vary 8022depending on the efficiency of the compiler and the compiler 8023options used during generation. 8024 8025 Previous Release (11_20_01) 8026 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 8027 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 8028 8029 Current Release: 8030 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 8031 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 8032 8033 2) Linux: 8034 8035Updated all files to apply cleanly against 2.4.16. 8036 8037Added basic PCI Interrupt Routing Table (PRT) support for IA32 8038(acpi_pci.c), and unified the PRT code for IA32 and IA64. This 8039version supports both static and dyanmic PRT entries, but dynamic 8040entries are treated as if they were static (not yet 8041reconfigurable). Architecture- specific code to use this data is 8042absent on IA32 but should be available shortly. 8043 8044Changed the initialization sequence to start the ACPI interpreter 8045(acpi_init) prior to initialization of the PCI driver (pci_init) 8046in init/main.c. This ordering is required to support PRT and 8047facilitate other (future) enhancement. A side effect is that the 8048ACPI bus driver and certain device drivers can no longer be loaded 8049as modules. 8050 8051Modified the 'make menuconfig' options to allow PCI Interrupt 8052Routing support to be included without the ACPI Bus and other 8053device drivers. 8054 8055 3) ASL Compiler, version X2033: 8056 8057Fixed some issues with the use of the new CopyObject and 8058DataTableRegion operators. Both are fully functional. 8059 8060 ---------------------------------------- 8061Summary of changes for this label: 11_20_01 8062 8063 20 November 2001. Summary of changes for this release. 8064 8065 1) ACPI CA Core Subsystem: 8066 8067Updated Index support to match ACPI 2.0 semantics. Storing a 8068Integer, String, or Buffer to an Index of a Buffer will store only 8069the least-significant byte of the source to the Indexed buffer 8070byte. Multiple writes are not performed. 8071 8072Fixed a problem where the access type used in an AccessAs ASL 8073operator was not recorded correctly into the field object. 8074 8075Fixed a problem where ASL Event objects were created in a 8076signalled state. Events are now created in an unsignalled state. 8077 8078The internal object cache is now purged after table loading and 8079initialization to reduce the use of dynamic kernel memory -- on 8080the assumption that object use is greatest during the parse phase 8081of the entire table (versus the run-time use of individual control 8082methods.) 8083 8084ACPI 2.0 variable-length packages are now fully operational. 8085 8086Code and Data Size: Code and Data optimizations have permitted new 8087feature development with an actual reduction in the library size. 8088Current core subsystem library sizes are shown below. These are 8089the code and data sizes for the acpica.lib produced by the 8090Microsoft Visual C++ 6.0 compiler, and these values do not include 8091any ACPI driver or OSPM code. The debug version of the code 8092includes the debug output trace mechanism and has a larger code 8093and data size. Note that these values will vary depending on the 8094efficiency of the compiler and the compiler options used during 8095generation. 8096 8097 Previous Release (11_09_01): 8098 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 8099 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 8100 8101 Current Release: 8102 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 8103 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 8104 8105 2) Linux: 8106 8107Enhanced the ACPI boot-time initialization code to allow the use 8108of Local APIC tables for processor enumeration on IA-32, and to 8109pave the way for a fully MPS-free boot (on SMP systems) in the 8110near future. This functionality replaces 8111arch/i386/kernel/acpitables.c, which was introduced in an earlier 81122.4.15-preX release. To enable this feature you must add 8113"acpi_boot=on" to the kernel command line -- see the help entry 8114for CONFIG_ACPI_BOOT for more information. An IA-64 release is in 8115the works... 8116 8117Restructured the configuration options to allow boot-time table 8118parsing support without inclusion of the ACPI Interpreter (and 8119other) code. 8120 8121NOTE: This release does not include fixes for the reported events, 8122power-down, and thermal passive cooling issues (coming soon). 8123 8124 3) ASL Compiler: 8125 8126Added additional typechecking for Fields within restricted access 8127Operation Regions. All fields within EC and CMOS regions must be 8128declared with ByteAcc. All fields withing SMBus regions must be 8129declared with the BufferAcc access type. 8130 8131Fixed a problem where the listing file output of control methods 8132no longer interleaved the actual AML code with the ASL source 8133code. 8134 8135 8136 8137 8138---------------------------------------- 8139Summary of changes for this label: 11_09_01 8140 81411) ACPI CA Core Subsystem: 8142 8143Implemented ACPI 2.0-defined support for writes to fields with a 8144Buffer, String, or Integer source operand that is smaller than the 8145target field. In these cases, the source operand is zero-extended 8146to fill the target field. 8147 8148Fixed a problem where a Field starting bit offset (within the 8149parent operation region) was calculated incorrectly if the 8150 8151alignment of the field differed from the access width. This 8152affected CreateWordField, CreateDwordField, CreateQwordField, and 8153possibly other fields that use the "AccessAny" keyword. 8154 8155Fixed a problem introduced in the 11_02_01 release where indirect 8156stores through method arguments did not operate correctly. 8157 81582) Linux: 8159 8160Implemented boot-time ACPI table parsing support 8161(CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code 8162facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than 8163legacy BIOS interfaces (e.g. MPS) for the configuration of system 8164processors, memory, and interrupts during setup_arch(). Note that 8165this patch does not include the required architecture-specific 8166changes required to apply this information -- subsequent patches 8167will be posted for both IA32 and IA64 to achieve this. 8168 8169Added low-level sleep support for IA32 platforms, courtesy of Pat 8170Mochel. This allows IA32 systems to transition to/from various 8171sleeping states (e.g. S1, S3), although the lack of a centralized 8172driver model and power-manageable drivers will prevent its 8173(successful) use on most systems. 8174 8175Revamped the ACPI 'menuconfig' layout: created new "ACPI Support" 8176submenu, unified IA32 and IA64 options, added new "Boot using ACPI 8177tables" option, etc. 8178 8179Increased the default timeout for the EC driver from 1ms to 10ms 8180(1000 cycles of 10us) to try to address AE_TIME errors during EC 8181transactions. 8182 8183 ---------------------------------------- 8184Summary of changes for this label: 11_02_01 8185 81861) ACPI CA Core Subsystem: 8187 8188ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access 8189(QWordAcc keyword). All ACPI 2.0 64-bit support is now 8190implemented. 8191 8192OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required 8193changes to support ACPI 2.0 Qword field access. Read/Write 8194PciConfiguration(), Read/Write Memory(), and Read/Write Port() now 8195accept an ACPI_INTEGER (64 bits) as the value parameter. Also, 8196the value parameter for the address space handler interface is now 8197an ACPI_INTEGER. OSL implementations of these interfaces must now 8198handle the case where the Width parameter is 64. 8199 8200Index Fields: Fixed a problem where unaligned bit assembly and 8201disassembly for IndexFields was not supported correctly. 8202 8203Index and Bank Fields: Nested Index and Bank Fields are now 8204supported. During field access, a check is performed to ensure 8205that the value written to an Index or Bank register is not out of 8206the range of the register. The Index (or Bank) register is 8207written before each access to the field data. Future support will 8208include allowing individual IndexFields to be wider than the 8209DataRegister width. 8210 8211Fields: Fixed a problem where the AML interpreter was incorrectly 8212attempting to write beyond the end of a Field/OpRegion. This was 8213a boundary case that occurred when a DWORD field was written to a 8214BYTE access OpRegion, forcing multiple writes and causing the 8215interpreter to write one datum too many. 8216 8217Fields: Fixed a problem with Field/OpRegion access where the 8218starting bit address of a field was incorrectly calculated if the 8219current access type was wider than a byte (WordAcc, DwordAcc, or 8220QwordAcc). 8221 8222Fields: Fixed a problem where forward references to individual 8223FieldUnits (individual Field names within a Field definition) were 8224not resolved during the AML table load. 8225 8226Fields: Fixed a problem where forward references from a Field 8227definition to the parent Operation Region definition were not 8228resolved during the AML table load. 8229 8230Fields: Duplicate FieldUnit names within a scope are now detected 8231during AML table load. 8232 8233Acpi Interfaces: Fixed a problem where the AcpiGetName() interface 8234returned an incorrect name for the root node. 8235 8236Code and Data Size: Code and Data optimizations have permitted new 8237feature development with an actual reduction in the library size. 8238Current core subsystem library sizes are shown below. These are 8239the code and data sizes for the acpica.lib produced by the 8240Microsoft Visual C++ 6.0 compiler, and these values do not include 8241any ACPI driver or OSPM code. The debug version of the code 8242includes the debug output trace mechanism and has a larger code 8243and data size. Note that these values will vary depending on the 8244efficiency of the compiler and the compiler options used during 8245generation. 8246 8247 Previous Release (10_18_01): 8248 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 8249 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 8250 8251 Current Release: 8252 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 8253 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 8254 8255 2) Linux: 8256 8257Improved /proc processor output (Pavel Machek) Re-added 8258MODULE_LICENSE("GPL") to all modules. 8259 8260 3) ASL Compiler version X2030: 8261 8262Duplicate FieldUnit names within a scope are now detected and 8263flagged as errors. 8264 8265 4) Documentation: 8266 8267Programmer Reference updated to reflect OSL and address space 8268handler interface changes described above. 8269 8270---------------------------------------- 8271Summary of changes for this label: 10_18_01 8272 8273ACPI CA Core Subsystem: 8274 8275Fixed a problem with the internal object reference count mechanism 8276that occasionally caused premature object deletion. This resolves 8277all of the outstanding problem reports where an object is deleted 8278in the middle of an interpreter evaluation. Although this problem 8279only showed up in rather obscure cases, the solution to the 8280problem involved an adjustment of all reference counts involving 8281objects attached to namespace nodes. 8282 8283Fixed a problem with Field support in the interpreter where 8284writing to an aligned field whose length is an exact multiple (2 8285or greater) of the field access granularity would cause an attempt 8286to write beyond the end of the field. 8287 8288The top level AML opcode execution functions within the 8289interpreter have been renamed with a more meaningful and 8290consistent naming convention. The modules exmonad.c and 8291exdyadic.c were eliminated. New modules are exoparg1.c, 8292exoparg2.c, exoparg3.c, and exoparg6.c. 8293 8294Support for the ACPI 2.0 "Mid" ASL operator has been implemented. 8295 8296Fixed a problem where the AML debugger was causing some internal 8297objects to not be deleted during subsystem termination. 8298 8299Fixed a problem with the external AcpiEvaluateObject interface 8300where the subsystem would fault if the named object to be 8301evaluated refered to a constant such as Zero, Ones, etc. 8302 8303Fixed a problem with IndexFields and BankFields where the 8304subsystem would fault if the index, data, or bank registers were 8305not defined in the same scope as the field itself. 8306 8307Added printf format string checking for compilers that support 8308this feature. Corrected more than 50 instances of issues with 8309format specifiers within invocations of ACPI_DEBUG_PRINT 8310throughout the core subsystem code. 8311 8312The ASL "Revision" operator now returns the ACPI support level 8313implemented in the core - the value "2" since the ACPI 2.0 support 8314is more than 50% implemented. 8315 8316Enhanced the output of the AML debugger "dump namespace" command 8317to output in a more human-readable form. 8318 8319Current core subsystem library code sizes are shown below. These 8320 8321are the code and data sizes for the acpica.lib produced by the 8322Microsoft Visual C++ 6.0 compiler, and these values do not include 8323any ACPI driver or OSPM code. The debug version of the code 8324includes the full debug trace mechanism -- leading to a much 8325 8326larger code and data size. Note that these values will vary 8327depending on the efficiency of the compiler and the compiler 8328options used during generation. 8329 8330 Previous Label (09_20_01): 8331 Non-Debug Version: 65K Code, 5K Data, 70K Total 8332 Debug Version: 138K Code, 58K Data, 196K Total 8333 8334 This Label: 8335 8336 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 8337 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 8338 8339Linux: 8340 8341Implemented a "Bad BIOS Blacklist" to track machines that have 8342known ASL/AML problems. 8343 8344Enhanced the /proc interface for the thermal zone driver and added 8345support for _HOT (the critical suspend trip point). The 'info' 8346file now includes threshold/policy information, and allows setting 8347of _SCP (cooling preference) and _TZP (polling frequency) values 8348to the 'info' file. Examples: "echo tzp=5 > info" sets the polling 8349frequency to 5 seconds, and "echo scp=1 > info" sets the cooling 8350preference to the passive/quiet mode (if supported by the ASL). 8351 8352Implemented a workaround for a gcc bug that resuted in an OOPs 8353when loading the control method battery driver. 8354 8355 ---------------------------------------- 8356Summary of changes for this label: 09_20_01 8357 8358 ACPI CA Core Subsystem: 8359 8360The AcpiEnableEvent and AcpiDisableEvent interfaces have been 8361modified to allow individual GPE levels to be flagged as wake- 8362enabled (i.e., these GPEs are to remain enabled when the platform 8363sleeps.) 8364 8365The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now 8366support wake-enabled GPEs. This means that upon entering the 8367sleep state, all GPEs that are not wake-enabled are disabled. 8368When leaving the sleep state, these GPEs are reenabled. 8369 8370A local double-precision divide/modulo module has been added to 8371enhance portability to OS kernels where a 64-bit math library is 8372not available. The new module is "utmath.c". 8373 8374Several optimizations have been made to reduce the use of CPU 8375stack. Originally over 2K, the maximum stack usage is now below 83762K at 1860 bytes (1.82k) 8377 8378Fixed a problem with the AcpiGetFirmwareTable interface where the 8379root table pointer was not mapped into a logical address properly. 8380 8381Fixed a problem where a NULL pointer was being dereferenced in the 8382interpreter code for the ASL Notify operator. 8383 8384Fixed a problem where the use of the ASL Revision operator 8385returned an error. This operator now returns the current version 8386of the ACPI CA core subsystem. 8387 8388Fixed a problem where objects passed as control method parameters 8389to AcpiEvaluateObject were always deleted at method termination. 8390However, these objects may end up being stored into the namespace 8391by the called method. The object reference count mechanism was 8392applied to these objects instead of a force delete. 8393 8394Fixed a problem where static strings or buffers (contained in the 8395AML code) that are declared as package elements within the ASL 8396code could cause a fault because the interpreter would attempt to 8397delete them. These objects are now marked with the "static 8398object" flag to prevent any attempt to delete them. 8399 8400Implemented an interpreter optimization to use operands directly 8401from the state object instead of extracting the operands to local 8402variables. This reduces stack use and code size, and improves 8403performance. 8404 8405The module exxface.c was eliminated as it was an unnecessary extra 8406layer of code. 8407 8408Current core subsystem library code sizes are shown below. These 8409are the code and data sizes for the acpica.lib produced by the 8410Microsoft Visual C++ 6.0 compiler, and these values do not include 8411any ACPI driver or OSPM code. The debug version of the code 8412includes the full debug trace mechanism -- leading to a much 8413larger code and data size. Note that these values will vary 8414depending on the efficiency of the compiler and the compiler 8415options used during generation. 8416 8417 Non-Debug Version: 65K Code, 5K Data, 70K Total 8418(Previously 69K) Debug Version: 138K Code, 58K Data, 196K 8419Total (Previously 195K) 8420 8421Linux: 8422 8423Support for ACPI 2.0 64-bit integers has been added. All ACPI 8424Integer objects are now 64 bits wide 8425 8426All Acpi data types and structures are now in lower case. Only 8427Acpi macros are upper case for differentiation. 8428 8429 Documentation: 8430 8431Changes to the external interfaces as described above. 8432 8433 ---------------------------------------- 8434Summary of changes for this label: 08_31_01 8435 8436 ACPI CA Core Subsystem: 8437 8438A bug with interpreter implementation of the ASL Divide operator 8439was found and fixed. The implicit function return value (not the 8440explicit store operands) was returning the remainder instead of 8441the quotient. This was a longstanding bug and it fixes several 8442known outstanding issues on various platforms. 8443 8444The ACPI_DEBUG_PRINT and function trace entry/exit macros have 8445been further optimized for size. There are 700 invocations of the 8446DEBUG_PRINT macro alone, so each optimization reduces the size of 8447the debug version of the subsystem significantly. 8448 8449A stack trace mechanism has been implemented. The maximum stack 8450usage is about 2K on 32-bit platforms. The debugger command "stat 8451stack" will display the current maximum stack usage. 8452 8453All public symbols and global variables within the subsystem are 8454now prefixed with the string "Acpi". This keeps all of the 8455symbols grouped together in a kernel map, and avoids conflicts 8456with other kernel subsystems. 8457 8458Most of the internal fixed lookup tables have been moved into the 8459code segment via the const operator. 8460 8461Several enhancements have been made to the interpreter to both 8462reduce the code size and improve performance. 8463 8464Current core subsystem library code sizes are shown below. These 8465are the code and data sizes for the acpica.lib produced by the 8466Microsoft Visual C++ 6.0 compiler, and these values do not include 8467any ACPI driver or OSPM code. The debug version of the code 8468includes the full debug trace mechanism which contains over 700 8469invocations of the DEBUG_PRINT macro, 500 function entry macro 8470invocations, and over 900 function exit macro invocations -- 8471leading to a much larger code and data size. Note that these 8472values will vary depending on the efficiency of the compiler and 8473the compiler options used during generation. 8474 8475 Non-Debug Version: 64K Code, 5K Data, 69K Total 8476Debug Version: 137K Code, 58K Data, 195K Total 8477 8478 Linux: 8479 8480Implemented wbinvd() macro, pending a kernel-wide definition. 8481 8482Fixed /proc/acpi/event to handle poll() and short reads. 8483 8484 ASL Compiler, version X2026: 8485 8486Fixed a problem introduced in the previous label where the AML 8487 8488code emitted for package objects produced packages with zero 8489length. 8490 8491 ---------------------------------------- 8492Summary of changes for this label: 08_16_01 8493 8494ACPI CA Core Subsystem: 8495 8496The following ACPI 2.0 ASL operators have been implemented in the 8497AML interpreter (These are already supported by the Intel ASL 8498compiler): ToDecimalString, ToHexString, ToString, ToInteger, and 8499ToBuffer. Support for 64-bit AML constants is implemented in the 8500AML parser, debugger, and disassembler. 8501 8502The internal memory tracking mechanism (leak detection code) has 8503been upgraded to reduce the memory overhead (a separate tracking 8504block is no longer allocated for each memory allocation), and now 8505supports all of the internal object caches. 8506 8507The data structures and code for the internal object caches have 8508been coelesced and optimized so that there is a single cache and 8509memory list data structure and a single group of functions that 8510implement generic cache management. This has reduced the code 8511size in both the debug and release versions of the subsystem. 8512 8513The DEBUG_PRINT macro(s) have been optimized for size and replaced 8514by ACPI_DEBUG_PRINT. The syntax for this macro is slightly 8515different, because it generates a single call to an internal 8516function. This results in a savings of about 90 bytes per 8517invocation, resulting in an overall code and data savings of about 851816% in the debug version of the subsystem. 8519 8520 Linux: 8521 8522Fixed C3 disk corruption problems and re-enabled C3 on supporting 8523machines. 8524 8525Integrated low-level sleep code by Patrick Mochel. 8526 8527Further tweaked source code Linuxization. 8528 8529Other minor fixes. 8530 8531 ASL Compiler: 8532 8533Support for ACPI 2.0 variable length packages is fixed/completed. 8534 8535Fixed a problem where the optional length parameter for the ACPI 85362.0 ToString operator. 8537 8538Fixed multiple extraneous error messages when a syntax error is 8539detected within the declaration line of a control method. 8540 8541 ---------------------------------------- 8542Summary of changes for this label: 07_17_01 8543 8544ACPI CA Core Subsystem: 8545 8546Added a new interface named AcpiGetFirmwareTable to obtain any 8547ACPI table via the ACPI signature. The interface can be called at 8548any time during kernel initialization, even before the kernel 8549virtual memory manager is initialized and paging is enabled. This 8550allows kernel subsystems to obtain ACPI tables very early, even 8551before the ACPI CA subsystem is initialized. 8552 8553Fixed a problem where Fields defined with the AnyAcc attribute 8554could be resolved to the incorrect address under the following 8555conditions: 1) the field width is larger than 8 bits and 2) the 8556parent operation region is not defined on a DWORD boundary. 8557 8558Fixed a problem where the interpreter is not being locked during 8559namespace initialization (during execution of the _INI control 8560methods), causing an error when an attempt is made to release it 8561later. 8562 8563ACPI 2.0 support in the AML Interpreter has begun and will be 8564ongoing throughout the rest of this year. In this label, The Mod 8565operator is implemented. 8566 8567Added a new data type to contain full PCI addresses named 8568ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device, 8569and Function values. 8570 8571 Linux: 8572 8573Enhanced the Linux version of the source code to change most 8574capitalized ACPI type names to lowercase. For example, all 8575instances of ACPI_STATUS are changed to acpi_status. This will 8576result in a large diff, but the change is strictly cosmetic and 8577aligns the CA code closer to the Linux coding standard. 8578 8579OSL Interfaces: 8580 8581The interfaces to the PCI configuration space have been changed to 8582add the PCI Segment number and to split the single 32-bit combined 8583DeviceFunction field into two 16-bit fields. This was 8584accomplished by moving the four values that define an address in 8585PCI configuration space (segment, bus, device, and function) to 8586the new ACPI_PCI_ID structure. 8587 8588The changes to the PCI configuration space interfaces led to a 8589reexamination of the complete set of address space access 8590interfaces for PCI, I/O, and Memory. The previously existing 18 8591interfaces have proven difficult to maintain (any small change 8592must be propagated across at least 6 interfaces) and do not easily 8593allow for future expansion to 64 bits if necessary. Also, on some 8594systems, it would not be appropriate to demultiplex the access 8595width (8, 16, 32,or 64) before calling the OSL if the 8596corresponding native OS interfaces contain a similar access width 8597parameter. For these reasons, the 18 address space interfaces 8598have been replaced by these 6 new ones: 8599 8600AcpiOsReadPciConfiguration 8601AcpiOsWritePciConfiguration 8602AcpiOsReadMemory 8603AcpiOsWriteMemory 8604AcpiOsReadPort 8605AcpiOsWritePort 8606 8607Added a new interface named AcpiOsGetRootPointer to allow the OSL 8608to perform the platform and/or OS-specific actions necessary to 8609obtain the ACPI RSDP table pointer. On IA-32 platforms, this 8610interface will simply call down to the CA core to perform the low- 8611memory search for the table. On IA-64, the RSDP is obtained from 8612EFI. Migrating this interface to the OSL allows the CA core to 8613 8614remain OS and platform independent. 8615 8616Added a new interface named AcpiOsSignal to provide a generic 8617"function code and pointer" interface for various miscellaneous 8618signals and notifications that must be made to the host OS. The 8619first such signals are intended to support the ASL Fatal and 8620Breakpoint operators. In the latter case, the AcpiOsBreakpoint 8621interface has been obsoleted. 8622 8623The definition of the AcpiFormatException interface has been 8624changed to simplify its use. The caller no longer must supply a 8625buffer to the call; A pointer to a const string is now returned 8626directly. This allows the call to be easily used in printf 8627statements, etc. since the caller does not have to manage a local 8628buffer. 8629 8630 8631 ASL Compiler, Version X2025: 8632 8633The ACPI 2.0 Switch/Case/Default operators have been implemented 8634and are fully functional. They will work with all ACPI 1.0 8635interpreters, since the operators are simply translated to If/Else 8636pairs. 8637 8638The ACPI 2.0 ElseIf operator is implemented and will also work 8639with 1.0 interpreters, for the same reason. 8640 8641Implemented support for ACPI 2.0 variable-length packages. These 8642packages have a separate opcode, and their size is determined by 8643the interpreter at run-time. 8644 8645Documentation The ACPI CA Programmer Reference has been updated to 8646reflect the new interfaces and changes to existing interfaces. 8647 8648 ------------------------------------------ 8649Summary of changes for this label: 06_15_01 8650 8651 ACPI CA Core Subsystem: 8652 8653Fixed a problem where a DWORD-accessed field within a Buffer 8654object would get its byte address inadvertently rounded down to 8655the nearest DWORD. Buffers are always Byte-accessible. 8656 8657 ASL Compiler, version X2024: 8658 8659Fixed a problem where the Switch() operator would either fault or 8660hang the compiler. Note however, that the AML code for this ACPI 86612.0 operator is not yet implemented. 8662 8663Compiler uses the new AcpiOsGetTimer interface to obtain compile 8664timings. 8665 8666Implementation of the CreateField operator automatically converts 8667a reference to a named field within a resource descriptor from a 8668byte offset to a bit offset if required. 8669 8670Added some missing named fields from the resource descriptor 8671support. These are the names that are automatically created by the 8672compiler to reference fields within a descriptor. They are only 8673valid at compile time and are not passed through to the AML 8674interpreter. 8675 8676Resource descriptor named fields are now typed as Integers and 8677subject to compile-time typechecking when used in expressions. 8678 8679 ------------------------------------------ 8680Summary of changes for this label: 05_18_01 8681 8682 ACPI CA Core Subsystem: 8683 8684Fixed a couple of problems in the Field support code where bits 8685from adjacent fields could be returned along with the proper field 8686bits. Restructured the field support code to improve performance, 8687readability and maintainability. 8688 8689New DEBUG_PRINTP macro automatically inserts the procedure name 8690into the output, saving hundreds of copies of procedure name 8691strings within the source, shrinking the memory footprint of the 8692debug version of the core subsystem. 8693 8694 Source Code Structure: 8695 8696The source code directory tree was restructured to reflect the 8697current organization of the component architecture. Some files 8698and directories have been moved and/or renamed. 8699 8700 Linux: 8701 8702Fixed leaking kacpidpc processes. 8703 8704Fixed queueing event data even when /proc/acpi/event is not 8705opened. 8706 8707 ASL Compiler, version X2020: 8708 8709Memory allocation performance enhancement - over 24X compile time 8710improvement on large ASL files. Parse nodes and namestring 8711buffers are now allocated from a large internal compiler buffer. 8712 8713The temporary .SRC file is deleted unless the "-s" option is 8714specified 8715 8716The "-d" debug output option now sends all output to the .DBG file 8717instead of the console. 8718 8719"External" second parameter is now optional 8720 8721"ElseIf" syntax now properly allows the predicate 8722 8723Last operand to "Load" now recognized as a Target operand 8724 8725Debug object can now be used anywhere as a normal object. 8726 8727ResourceTemplate now returns an object of type BUFFER 8728 8729EISAID now returns an object of type INTEGER 8730 8731"Index" now works with a STRING operand 8732 8733"LoadTable" now accepts optional parameters 8734 8735"ToString" length parameter is now optional 8736 8737"Interrupt (ResourceType," parse error fixed. 8738 8739"Register" with a user-defined region space parse error fixed 8740 8741Escaped backslash at the end of a string ("\\") scan/parse error 8742fixed 8743 8744"Revision" is now an object of type INTEGER. 8745 8746 8747 8748------------------------------------------ 8749Summary of changes for this label: 05_02_01 8750 8751Linux: 8752 8753/proc/acpi/event now blocks properly. 8754 8755Removed /proc/sys/acpi. You can still dump your DSDT from 8756/proc/acpi/dsdt. 8757 8758 ACPI CA Core Subsystem: 8759 8760Fixed a problem introduced in the previous label where some of the 8761"small" resource descriptor types were not recognized. 8762 8763Improved error messages for the case where an ASL Field is outside 8764the range of the parent operation region. 8765 8766 ASL Compiler, version X2018: 8767 8768 8769Added error detection for ASL Fields that extend beyond the length 8770of the parent operation region (only if the length of the region 8771is known at compile time.) This includes fields that have a 8772minimum access width that is smaller than the parent region, and 8773individual field units that are partially or entirely beyond the 8774extent of the parent. 8775 8776 8777 8778------------------------------------------ 8779Summary of changes for this label: 04_27_01 8780 8781 ACPI CA Core Subsystem: 8782 8783Fixed a problem where the namespace mutex could be released at the 8784wrong time during execution of AcpiRemoveAddressSpaceHandler. 8785 8786Added optional thread ID output for debug traces, to simplify 8787debugging of multiple threads. Added context switch notification 8788when the debug code realizes that a different thread is now 8789executing ACPI code. 8790 8791Some additional external data types have been prefixed with the 8792string "ACPI_" for consistency. This may effect existing code. 8793The data types affected are the external callback typedefs - e.g., 8794 8795WALK_CALLBACK becomes ACPI_WALK_CALLBACK. 8796 8797 Linux: 8798 8799Fixed an issue with the OSL semaphore implementation where a 8800thread was waking up with an error from receiving a SIGCHLD 8801signal. 8802 8803Linux version of ACPI CA now uses the system C library for string 8804manipulation routines instead of a local implementation. 8805 8806Cleaned up comments and removed TBDs. 8807 8808 ASL Compiler, version X2017: 8809 8810Enhanced error detection and reporting for all file I/O 8811operations. 8812 8813 Documentation: 8814 8815Programmer Reference updated to version 1.06. 8816 8817 8818 8819------------------------------------------ 8820Summary of changes for this label: 04_13_01 8821 8822 ACPI CA Core Subsystem: 8823 8824Restructured support for BufferFields and RegionFields. 8825BankFields support is now fully operational. All known 32-bit 8826limitations on field sizes have been removed. Both BufferFields 8827and (Operation) RegionFields are now supported by the same field 8828management code. 8829 8830Resource support now supports QWORD address and IO resources. The 883116/32/64 bit address structures and the Extended IRQ structure 8832have been changed to properly handle Source Resource strings. 8833 8834A ThreadId of -1 is now used to indicate a "mutex not acquired" 8835condition internally and must never be returned by AcpiOsThreadId. 8836This reserved value was changed from 0 since Unix systems allow a 8837thread ID of 0. 8838 8839Linux: 8840 8841Driver code reorganized to enhance portability 8842 8843Added a kernel configuration option to control ACPI_DEBUG 8844 8845Fixed the EC driver to honor _GLK. 8846 8847ASL Compiler, version X2016: 8848 8849Fixed support for the "FixedHw" keyword. Previously, the FixedHw 8850address space was set to 0, not 0x7f as it should be. 8851 8852 ------------------------------------------ 8853Summary of changes for this label: 03_13_01 8854 8855 ACPI CA Core Subsystem: 8856 8857During ACPI initialization, the _SB_._INI method is now run if 8858present. 8859 8860Notify handler fix - notifies are deferred until the parent method 8861completes execution. This fixes the "mutex already acquired" 8862issue seen occasionally. 8863 8864Part of the "implicit conversion" rules in ACPI 2.0 have been 8865found to cause compatibility problems with existing ASL/AML. The 8866convert "result-to-target-type" implementation has been removed 8867for stores to method Args and Locals. Source operand conversion 8868is still fully implemented. Possible changes to ACPI 2.0 8869specification pending. 8870 8871Fix to AcpiRsCalculatePciRoutingTableLength to return correct 8872length. 8873 8874Fix for compiler warnings for 64-bit compiles. 8875 8876 Linux: 8877 8878/proc output aligned for easier parsing. 8879 8880Release-version compile problem fixed. 8881 8882New kernel configuration options documented in Configure.help. 8883 8884IBM 600E - Fixed Sleep button may generate "Invalid <NULL> 8885context" message. 8886 8887 OSPM: 8888 8889Power resource driver integrated with bus manager. 8890 8891Fixed kernel fault during active cooling for thermal zones. 8892 8893Source Code: 8894 8895The source code tree has been restructured. 8896 8897 8898 8899------------------------------------------ 8900Summary of changes for this label: 03_02_01 8901 8902 Linux OS Services Layer (OSL): 8903 8904Major revision of all Linux-specific code. 8905 8906Modularized all ACPI-specific drivers. 8907 8908Added new thermal zone and power resource drivers. 8909 8910Revamped /proc interface (new functionality is under /proc/acpi). 8911 8912New kernel configuration options. 8913 8914 Linux known issues: 8915 8916New kernel configuration options not documented in Configure.help 8917yet. 8918 8919 8920Module dependencies not currently implemented. If used, they 8921should be loaded in this order: busmgr, power, ec, system, 8922processor, battery, ac_adapter, button, thermal. 8923 8924Modules will not load if CONFIG_MODVERSION is set. 8925 8926IBM 600E - entering S5 may reboot instead of shutting down. 8927 8928IBM 600E - Sleep button may generate "Invalid <NULL> context" 8929message. 8930 8931Some systems may fail with "execution mutex already acquired" 8932message. 8933 8934 ACPI CA Core Subsystem: 8935 8936Added a new OSL Interface, AcpiOsGetThreadId. This was required 8937for the deadlock detection code. Defined to return a non-zero, 32- 8938bit thread ID for the currently executing thread. May be a non- 8939zero constant integer on single-thread systems. 8940 8941Implemented deadlock detection for internal subsystem mutexes. We 8942may add conditional compilation for this code (debug only) later. 8943 8944ASL/AML Mutex object semantics are now fully supported. This 8945includes multiple acquires/releases by owner and support for the 8946 8947Mutex SyncLevel parameter. 8948 8949A new "Force Release" mechanism automatically frees all ASL 8950Mutexes that have been acquired but not released when a thread 8951exits the interpreter. This forces conformance to the ACPI spec 8952("All mutexes must be released when an invocation exits") and 8953prevents deadlocked ASL threads. This mechanism can be expanded 8954(later) to monitor other resource acquisitions if OEM ASL code 8955continues to misbehave (which it will). 8956 8957Several new ACPI exception codes have been added for the Mutex 8958support. 8959 8960Recursive method calls are now allowed and supported (the ACPI 8961spec does in fact allow recursive method calls.) The number of 8962recursive calls is subject to the restrictions imposed by the 8963SERIALIZED method keyword and SyncLevel (ACPI 2.0) method 8964parameter. 8965 8966Implemented support for the SyncLevel parameter for control 8967methods (ACPI 2.0 feature) 8968 8969Fixed a deadlock problem when multiple threads attempted to use 8970the interpreter. 8971 8972Fixed a problem where the string length of a String package 8973element was not always set in a package returned from 8974AcpiEvaluateObject. 8975 8976Fixed a problem where the length of a String package element was 8977not always included in the length of the overall package returned 8978from AcpiEvaluateObject. 8979 8980Added external interfaces (Acpi*) to the ACPI debug memory 8981manager. This manager keeps a list of all outstanding 8982allocations, and can therefore detect memory leaks and attempts to 8983free memory blocks more than once. Useful for code such as the 8984power manager, etc. May not be appropriate for device drivers. 8985Performance with the debug code enabled is slow. 8986 8987The ACPI Global Lock is now an optional hardware element. 8988 8989 ASL Compiler Version X2015: 8990 8991Integrated changes to allow the compiler to be generated on 8992multiple platforms. 8993 8994Linux makefile added to generate the compiler on Linux 8995 8996 Source Code: 8997 8998All platform-specific headers have been moved to their own 8999subdirectory, Include/Platform. 9000 9001New source file added, Interpreter/ammutex.c 9002 9003New header file, Include/acstruct.h 9004 9005 Documentation: 9006 9007The programmer reference has been updated for the following new 9008interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree 9009 9010 ------------------------------------------ 9011Summary of changes for this label: 02_08_01 9012 9013Core ACPI CA Subsystem: Fixed a problem where an error was 9014incorrectly returned if the return resource buffer was larger than 9015the actual data (in the resource interfaces). 9016 9017References to named objects within packages are resolved to the 9018 9019full pathname string before packages are returned directly (via 9020the AcpiEvaluateObject interface) or indirectly via the resource 9021interfaces. 9022 9023Linux OS Services Layer (OSL): 9024 9025Improved /proc battery interface. 9026 9027 9028Added C-state debugging output and other miscellaneous fixes. 9029 9030ASL Compiler Version X2014: 9031 9032All defined method arguments can now be used as local variables, 9033including the ones that are not actually passed in as parameters. 9034The compiler tracks initialization of the arguments and issues an 9035exception if they are used without prior assignment (just like 9036locals). 9037 9038The -o option now specifies a filename prefix that is used for all 9039output files, including the AML output file. Otherwise, the 9040default behavior is as follows: 1) the AML goes to the file 9041specified in the DSDT. 2) all other output files use the input 9042source filename as the base. 9043 9044 ------------------------------------------ 9045Summary of changes for this label: 01_25_01 9046 9047Core ACPI CA Subsystem: Restructured the implementation of object 9048store support within the interpreter. This includes support for 9049the Store operator as well as any ASL operators that include a 9050target operand. 9051 9052Partially implemented support for Implicit Result-to-Target 9053conversion. This is when a result object is converted on the fly 9054to the type of an existing target object. Completion of this 9055support is pending further analysis of the ACPI specification 9056concerning this matter. 9057 9058CPU-specific code has been removed from the subsystem (hardware 9059directory). 9060 9061New Power Management Timer functions added 9062 9063Linux OS Services Layer (OSL): Moved system state transition code 9064to the core, fixed it, and modified Linux OSL accordingly. 9065 9066Fixed C2 and C3 latency calculations. 9067 9068 9069We no longer use the compilation date for the version message on 9070initialization, but retrieve the version from AcpiGetSystemInfo(). 9071 9072Incorporated for fix Sony VAIO machines. 9073 9074Documentation: The Programmer Reference has been updated and 9075reformatted. 9076 9077 9078ASL Compiler: Version X2013: Fixed a problem where the line 9079numbering and error reporting could get out of sync in the 9080presence of multiple include files. 9081 9082 ------------------------------------------ 9083Summary of changes for this label: 01_15_01 9084 9085Core ACPI CA Subsystem: 9086 9087Implemented support for type conversions in the execution of the 9088ASL Concatenate operator (The second operand is converted to 9089match the type of the first operand before concatenation.) 9090 9091Support for implicit source operand conversion is partially 9092implemented. The ASL source operand types Integer, Buffer, and 9093String are freely interchangeable for most ASL operators and are 9094converted by the interpreter on the fly as required. Implicit 9095Target operand conversion (where the result is converted to the 9096target type before storing) is not yet implemented. 9097 9098Support for 32-bit and 64-bit BCD integers is implemented. 9099 9100Problem fixed where a field read on an aligned field could cause a 9101read past the end of the field. 9102 9103New exception, AE_AML_NO_RETURN_VALUE, is returned when a method 9104does not return a value, but the caller expects one. (The ASL 9105compiler flags this as a warning.) 9106 9107ASL Compiler: 9108 9109Version X2011: 91101. Static typechecking of all operands is implemented. This 9111prevents the use of invalid objects (such as using a Package where 9112an Integer is required) at compile time instead of at interpreter 9113run-time. 91142. The ASL source line is printed with ALL errors and warnings. 91153. Bug fix for source EOF without final linefeed. 91164. Debug option is split into a parse trace and a namespace trace. 91175. Namespace output option (-n) includes initial values for 9118integers and strings. 91196. Parse-only option added for quick syntax checking. 91207. Compiler checks for duplicate ACPI name declarations 9121 9122Version X2012: 91231. Relaxed typechecking to allow interchangeability between 9124strings, integers, and buffers. These types are now converted by 9125the interpreter at runtime. 91262. Compiler reports time taken by each internal subsystem in the 9127debug output file. 9128 9129 9130 ------------------------------------------ 9131Summary of changes for this label: 12_14_00 9132 9133ASL Compiler: 9134 9135This is the first official release of the compiler. Since the 9136compiler requires elements of the Core Subsystem, this label 9137synchronizes everything. 9138 9139------------------------------------------ 9140Summary of changes for this label: 12_08_00 9141 9142 9143Fixed a problem where named references within the ASL definition 9144of both OperationRegions and CreateXXXFields did not work 9145properly. The symptom was an AE_AML_OPERAND_TYPE during 9146initialization of the region/field. This is similar (but not 9147related internally) to the problem that was fixed in the last 9148label. 9149 9150Implemented both 32-bit and 64-bit support for the BCD ASL 9151functions ToBCD and FromBCD. 9152 9153Updated all legal headers to include "2000" in the copyright 9154years. 9155 9156 ------------------------------------------ 9157Summary of changes for this label: 12_01_00 9158 9159Fixed a problem where method invocations within the ASL definition 9160of both OperationRegions and CreateXXXFields did not work 9161properly. The symptom was an AE_AML_OPERAND_TYPE during 9162initialization of the region/field: 9163 9164 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments 9165[DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s) 9166(0x3005) 9167 9168Fixed a problem where operators with more than one nested 9169subexpression would fail. The symptoms were varied, by mostly 9170AE_AML_OPERAND_TYPE errors. This was actually a rather serious 9171problem that has gone unnoticed until now. 9172 9173 Subtract (Add (1,2), Multiply (3,4)) 9174 9175Fixed a problem where AcpiGetHandle didn't quite get fixed in the 9176previous build (The prefix part of a relative path was handled 9177incorrectly). 9178 9179Fixed a problem where Operation Region initialization failed if 9180the operation region name was a "namepath" instead of a simple 9181"nameseg". Symptom was an AE_NO_OPERAND error. 9182 9183Fixed a problem where an assignment to a local variable via the 9184indirect RefOf mechanism only worked for the first such 9185assignment. Subsequent assignments were ignored. 9186 9187 ------------------------------------------ 9188Summary of changes for this label: 11_15_00 9189 9190ACPI 2.0 table support with backwards support for ACPI 1.0 and the 91910.71 extensions. Note: although we can read ACPI 2.0 BIOS tables, 9192the AML interpreter does NOT have support for the new 2.0 ASL 9193grammar terms at this time. 9194 9195All ACPI hardware access is via the GAS structures in the ACPI 2.0 9196FADT. 9197 9198All physical memory addresses across all platforms are now 64 bits 9199wide. Logical address width remains dependent on the platform 9200(i.e., "void *"). 9201 9202AcpiOsMapMemory interface changed to a 64-bit physical address. 9203 9204The AML interpreter integer size is now 64 bits, as per the ACPI 92052.0 specification. 9206 9207For backwards compatibility with ACPI 1.0, ACPI tables with a 9208revision number less than 2 use 32-bit integers only. 9209 9210Fixed a problem where the evaluation of OpRegion operands did not 9211always resolve them to numbers properly. 9212 9213------------------------------------------ 9214Summary of changes for this label: 10_20_00 9215 9216Fix for CBN_._STA issue. This fix will allow correct access to 9217CBN_ OpRegions when the _STA returns 0x8. 9218 9219Support to convert ACPI constants (Ones, Zeros, One) to actual 9220values before a package object is returned 9221 9222Fix for method call as predicate to if/while construct causing 9223incorrect if/while behavior 9224 9225Fix for Else block package lengths sometimes calculated wrong (if 9226block > 63 bytes) 9227 9228Fix for Processor object length field, was always zero 9229 9230Table load abort if FACP sanity check fails 9231 9232Fix for problem with Scope(name) if name already exists 9233 9234Warning emitted if a named object referenced cannot be found 9235(resolved) during method execution. 9236 9237 9238 9239 9240 9241------------------------------------------ 9242Summary of changes for this label: 9_29_00 9243 9244New table initialization interfaces: AcpiInitializeSubsystem no 9245longer has any parameters AcpiFindRootPointer - Find the RSDP (if 9246necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP- 9247>RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by 9248AcpiLoadTables 9249 9250Note: These interface changes require changes to all existing OSDs 9251 9252The PCI_Config default address space handler is always installed 9253at the root namespace object. 9254 9255------------------------------------------- 9256Summary of changes for this label: 09_15_00 9257 9258The new initialization architecture is implemented. New 9259interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize) 9260AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace 9261 9262(Namespace is automatically loaded when a table is loaded) 9263 9264The ACPI_OPERAND_OBJECT has been optimized to shrink its size from 926552 bytes to 32 bytes. There is usually one of these for every 9266namespace object, so the memory savings is significant. 9267 9268Implemented just-in-time evaluation of the CreateField operators. 9269 9270Bug fixes for IA-64 support have been integrated. 9271 9272Additional code review comments have been implemented 9273 9274The so-called "third pass parse" has been replaced by a final walk 9275through the namespace to initialize all operation regions (address 9276spaces) and fields that have not yet been initialized during the 9277execution of the various _INI and REG methods. 9278 9279New file - namespace/nsinit.c 9280 9281------------------------------------------- 9282Summary of changes for this label: 09_01_00 9283 9284Namespace manager data structures have been reworked to change the 9285primary object from a table to a single object. This has 9286resulted in dynamic memory savings of 3X within the namespace and 92872X overall in the ACPI CA subsystem. 9288 9289Fixed problem where the call to AcpiEvFindPciRootBuses was 9290inadvertently left commented out. 9291 9292Reduced the warning count when generating the source with the GCC 9293compiler. 9294 9295Revision numbers added to each module header showing the 9296SourceSafe version of the file. Please refer to this version 9297number when giving us feedback or comments on individual modules. 9298 9299The main object types within the subsystem have been renamed to 9300clarify their purpose: 9301 9302ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT 9303ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT 9304ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE 9305 9306NOTE: no changes to the initialization sequence are included in 9307this label. 9308 9309------------------------------------------- 9310Summary of changes for this label: 08_23_00 9311 9312Fixed problem where TerminateControlMethod was being called 9313multiple times per method 9314 9315Fixed debugger problem where single stepping caused a semaphore to 9316be oversignalled 9317 9318Improved performance through additional parse object caching - 9319added ACPI_EXTENDED_OP type 9320 9321------------------------------------------- 9322Summary of changes for this label: 08_10_00 9323 9324Parser/Interpreter integration: Eliminated the creation of 9325complete parse trees for ACPI tables and control methods. 9326Instead, parse subtrees are created and then deleted as soon as 9327they are processed (Either entered into the namespace or executed 9328by the interpreter). This reduces the use of dynamic kernel 9329memory significantly. (about 10X) 9330 9331Exception codes broken into classes and renumbered. Be sure to 9332recompile all code that includes acexcep.h. Hopefully we won't 9333have to renumber the codes again now that they are split into 9334classes (environment, programmer, AML code, ACPI table, and 9335internal). 9336 9337Fixed some additional alignment issues in the Resource Manager 9338subcomponent 9339 9340Implemented semaphore tracking in the AcpiExec utility, and fixed 9341several places where mutexes/semaphores were being unlocked 9342without a corresponding lock operation. There are no known 9343semaphore or mutex "leaks" at this time. 9344 9345Fixed the case where an ASL Return operator is used to return an 9346unnamed package. 9347 9348------------------------------------------- 9349Summary of changes for this label: 07_28_00 9350 9351Fixed a problem with the way addresses were calculated in 9352AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem 9353manifested itself when a Field was created with WordAccess or 9354DwordAccess, but the field unit defined within the Field was less 9355 9356than a Word or Dword. 9357 9358Fixed a problem in AmlDumpOperands() module's loop to pull 9359operands off of the operand stack to display information. The 9360problem manifested itself as a TLB error on 64-bit systems when 9361accessing an operand stack with two or more operands. 9362 9363Fixed a problem with the PCI configuration space handlers where 9364context was getting confused between accesses. This required a 9365change to the generic address space handler and address space 9366setup definitions. Handlers now get both a global handler context 9367(this is the one passed in by the user when executing 9368AcpiInstallAddressSpaceHandler() and a specific region context 9369that is unique to each region (For example, the _ADR, _SEG and 9370_BBN values associated with a specific region). The generic 9371function definitions have changed to the following: 9372 9373typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function, 9374UINT32 Address, UINT32 BitWidth, UINT32 *Value, void 9375*HandlerContext, // This used to be void *Context void 9376*RegionContext); // This is an additional parameter 9377 9378typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE 9379RegionHandle, UINT32 Function, void *HandlerContext, void 9380**RegionContext); // This used to be **ReturnContext 9381 9382------------------------------------------- 9383Summary of changes for this label: 07_21_00 9384 9385Major file consolidation and rename. All files within the 9386interpreter have been renamed as well as most header files. This 9387was done to prevent collisions with existing files in the host 9388OSs -- filenames such as "config.h" and "global.h" seem to be 9389quite common. The VC project files have been updated. All 9390makefiles will require modification. 9391 9392The parser/interpreter integration continues in Phase 5 with the 9393implementation of a complete 2-pass parse (the AML is parsed 9394twice) for each table; This avoids the construction of a huge 9395parse tree and therefore reduces the amount of dynamic memory 9396required by the subsystem. Greater use of the parse object cache 9397means that performance is unaffected. 9398 9399Many comments from the two code reviews have been rolled in. 9400 9401The 64-bit alignment support is complete. 9402 9403------------------------------------------- 9404Summary of changes for this label: 06_30_00 9405 9406With a nod and a tip of the hat to the technology of yesteryear, 9407we've added support in the source code for 80 column output 9408devices. The code is now mostly constrained to 80 columns or 9409less to support environments and editors that 1) cannot display 9410or print more than 80 characters on a single line, and 2) cannot 9411disable line wrapping. 9412 9413A major restructuring of the namespace data structure has been 9414completed. The result is 1) cleaner and more 9415understandable/maintainable code, and 2) a significant reduction 9416in the dynamic memory requirement for each named ACPI object 9417(almost half). 9418 9419------------------------------------------- 9420Summary of changes for this label: 06_23_00 9421 9422Linux support has been added. In order to obtain approval to get 9423the ACPI CA subsystem into the Linux kernel, we've had to make 9424quite a few changes to the base subsystem that will affect all 9425users (all the changes are generic and OS- independent). The 9426effects of these global changes have been somewhat far reaching. 9427Files have been merged and/or renamed and interfaces have been 9428renamed. The major changes are described below. 9429 9430Osd* interfaces renamed to AcpiOs* to eliminate namespace 9431pollution/confusion within our target kernels. All OSD 9432interfaces must be modified to match the new naming convention. 9433 9434Files merged across the subsystem. A number of the smaller source 9435and header files have been merged to reduce the file count and 9436increase the density of the existing files. There are too many 9437to list here. In general, makefiles that call out individual 9438files will require rebuilding. 9439 9440Interpreter files renamed. All interpreter files now have the 9441prefix am* instead of ie* and is*. 9442 9443Header files renamed: The acapi.h file is now acpixf.h. The 9444acpiosd.h file is now acpiosxf.h. We are removing references to 9445the acronym "API" since it is somewhat windowsy. The new name is 9446"external interface" or xface or xf in the filenames.j 9447 9448 9449All manifest constants have been forced to upper case (some were 9450mixed case.) Also, the string "ACPI_" has been prepended to many 9451(not all) of the constants, typedefs, and structs. 9452 9453The globals "DebugLevel" and "DebugLayer" have been renamed 9454"AcpiDbgLevel" and "AcpiDbgLayer" respectively. 9455 9456All other globals within the subsystem are now prefixed with 9457"AcpiGbl_" Internal procedures within the subsystem are now 9458prefixed with "Acpi" (with only a few exceptions). The original 9459two-letter abbreviation for the subcomponent remains after "Acpi" 9460- for example, CmCallocate became AcpiCmCallocate. 9461 9462Added a source code translation/conversion utility. Used to 9463generate the Linux source code, it can be modified to generate 9464other types of source as well. Can also be used to cleanup 9465existing source by removing extraneous spaces and blank lines. 9466Found in tools/acpisrc/* 9467 9468OsdUnMapMemory was renamed to OsdUnmapMemory and then 9469AcpiOsUnmapMemory. (UnMap became Unmap). 9470 9471A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore. 9472When set to one, this indicates that the caller wants to use the 9473 9474semaphore as a mutex, not a counting semaphore. ACPI CA uses 9475both types. However, implementers of this call may want to use 9476different OS primitives depending on the type of semaphore 9477requested. For example, some operating systems provide separate 9478 9479"mutex" and "semaphore" interfaces - where the mutex interface is 9480much faster because it doesn't have all the overhead of a full 9481semaphore implementation. 9482 9483Fixed a deadlock problem where a method that accesses the PCI 9484address space can block forever if it is the first access to the 9485space. 9486 9487------------------------------------------- 9488Summary of changes for this label: 06_02_00 9489 9490Support for environments that cannot handle unaligned data 9491accesses (e.g. firmware and OS environments devoid of alignment 9492handler technology namely SAL/EFI and the IA-64 Linux kernel) has 9493been added (via configurable macros) in these three areas: - 9494Transfer of data from the raw AML byte stream is done via byte 9495moves instead of word/dword/qword moves. - External objects are 9496aligned within the user buffer, including package elements (sub- 9497objects). - Conversion of name strings to UINT32 Acpi Names is now 9498done byte-wise. 9499 9500The Store operator was modified to mimic Microsoft's 9501implementation when storing to a Buffer Field. 9502 9503Added a check of the BM_STS bit before entering C3. 9504 9505The methods subdirectory has been obsoleted and removed. A new 9506file, cmeval.c subsumes the functionality. 9507 9508A 16-bit (DOS) version of AcpiExec has been developed. The 9509makefile is under the acpiexec directory. 9510