1---------------------------------------- 214 December 2009. Summary of changes for version 20091214: 3 4This release is available at www.acpica.org/downloads 5 61) ACPI CA Core Subsystem: 7 8Enhanced automatic data type conversions for predefined name repairs. This 9change expands the automatic repairs/conversions for predefined name return 10values to make Integers, Strings, and Buffers fully interchangeable. Also, a 11Buffer can be converted to a Package of Integers if necessary. The nsrepair.c 12module was completely restructured. Lin Ming, Bob Moore. 13 14Implemented automatic removal of null package elements during predefined name 15repairs. This change will automatically remove embedded and trailing NULL 16package elements from returned package objects that are defined to contain a 17variable number of sub-packages. The driver is then presented with a package 18with no null elements to deal with. ACPICA BZ 819. 19 20Implemented a repair for the predefined _FDE and _GTM names. The expected 21return value for both names is a Buffer of 5 DWORDs. This repair fixes two 22possible problems (both seen in the field), where a package of integers is 23returned, or a buffer of BYTEs is returned. With assistance from Jung-uk Kim. 24 25Implemented additional module-level code support. This change will properly 26execute module-level code that is not at the root of the namespace (under a 27Device object, etc.). Now executes the code within the current scope instead 28of the root. ACPICA BZ 762. Lin Ming. 29 30Fixed possible mutex acquisition errors when running _REG methods. Fixes a 31problem where mutex errors can occur when running a _REG method that is in 32the same scope as a method-defined operation region or an operation region 33under a module-level IF block. This type of code is rare, so the problem has 34not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore. 35 36Fixed a possible memory leak during module-level code execution. An object 37could be leaked for each block of executed module-level code if the 38interpreter slack mode is enabled This change deletes any implicitly returned 39object from the module-level code block. Lin Ming. 40 41Removed messages for successful predefined repair(s). The repair mechanism 42was considered too wordy. Now, messages are only unconditionally emitted if 43the return object cannot be repaired. Existing messages for successful 44repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ 827. 45 46Example Code and Data Size: These are the sizes for the OS-independent 47acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 48debug version of the code includes the debug output trace mechanism and has a 49much larger code and data size. 50 51 Previous Release: 52 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 53 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 54 Current Release: 55 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 56 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 57 582) iASL Compiler/Disassembler and Tools: 59 60iASL: Fixed a regression introduced in 20091112 where intermediate .SRC files 61were no longer automatically removed at the termination of the compile. 62 63acpiexec: Implemented the -f option to specify default region fill value. 64This option specifies the value used to initialize buffers that simulate 65operation regions. Default value is zero. Useful for debugging problems that 66depend on a specific initial value for a region or field. 67 68---------------------------------------- 6912 November 2009. Summary of changes for version 20091112: 70 71This release is available at www.acpica.org/downloads 72 731) ACPI CA Core Subsystem: 74 75Implemented a post-order callback to AcpiWalkNamespace. The existing 76interface only has a pre-order callback. This change adds an additional 77parameter for a post-order callback which will be more useful for bus scans. 78ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference. 79 80Modified the behavior of the operation region memory mapping cache for 81SystemMemory. Ensure that the memory mappings created for operation regions 82do not cross 4K page boundaries. Crossing a page boundary while mapping 83regions can cause kernel warnings on some hosts if the pages have different 84attributes. Such regions are probably BIOS bugs, and this is the workaround. 85Linux BZ 14445. Lin Ming. 86 87Implemented an automatic repair for predefined methods that must return 88sorted lists. This change will repair (by sorting) packages returned by _ALR, 89_PSS, and _TSS. Drivers can now assume that the packages are correctly sorted 90and do not contain NULL package elements. Adds one new file, 91namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore. 92 93Fixed a possible fault during predefined name validation if a return Package 94object contains NULL elements. Also adds a warning if a NULL element is 95followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement may 96include repair or removal of all such NULL elements where possible. 97 98Implemented additional module-level executable AML code support. This change 99will execute module-level code that is not at the root of the namespace 100(under a Device object, etc.) at table load time. Module-level executable AML 101code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming. 102 103Implemented a new internal function to create Integer objects. This function 104simplifies miscellaneous object creation code. ACPICA BZ 823. 105 106Reduced the severity of predefined repair messages, Warning to Info. Since 107the object was successfully repaired, a warning is too severe. Reduced to an 108info message for now. These messages may eventually be changed to debug-only. 109ACPICA BZ 812. 110 111Example Code and Data Size: These are the sizes for the OS-independent 112acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 113debug version of the code includes the debug output trace mechanism and has a 114much larger code and data size. 115 116 Previous Release: 117 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 118 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 119 Current Release: 120 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 121 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 122 1232) iASL Compiler/Disassembler and Tools: 124 125iASL: Implemented Switch() with While(1) so that Break works correctly. This 126change correctly implements the Switch operator with a surrounding While(1) 127so that the Break operator works as expected. ACPICA BZ 461. Lin Ming. 128 129iASL: Added a message if a package initializer list is shorter than package 130length. Adds a new remark for a Package() declaration if an initializer list 131exists, but is shorter than the declared length of the package. Although 132technically legal, this is probably a coding error and it is seen in the 133field. ACPICA BZ 815. Lin Ming, Bob Moore. 134 135iASL: Fixed a problem where the compiler could fault after the maximum number 136of errors was reached (200). 137 138acpixtract: Fixed a possible warning for pointer cast if the compiler warning 139level set very high. 140 141---------------------------------------- 14213 October 2009. Summary of changes for version 20091013: 143 144This release is available at www.acpica.org/downloads 145 1461) ACPI CA Core Subsystem: 147 148Fixed a problem where an Operation Region _REG method could be executed more 149than once. If a custom address space handler is installed by the host before 150the "initialize operation regions" phase of the ACPICA initialization, any 151_REG methods for that address space could be executed twice. This change 152fixes the problem. ACPICA BZ 427. Lin Ming. 153 154Fixed a possible memory leak for the Scope() ASL operator. When the exact 155invocation of "Scope(\)" is executed (change scope to root), one internal 156operand object was leaked. Lin Ming. 157 158Implemented a run-time repair for the _MAT predefined method. If the _MAT 159return value is defined as a Field object in the AML, and the field 160size is less than or equal to the default width of an integer (32 or 64),_MAT 161can incorrectly return an Integer instead of a Buffer. ACPICA now 162automatically repairs this problem. ACPICA BZ 810. 163 164Implemented a run-time repair for the _BIF and _BIX predefined methods. The 165"OEM Information" field is often incorrectly returned as an Integer with 166value zero if the field is not supported by the platform. This is due to an 167ambiguity in the ACPI specification. The field should always be a string. 168ACPICA now automatically repairs this problem by returning a NULL string 169within the returned Package. ACPICA BZ 807. 170 171Example Code and Data Size: These are the sizes for the OS-independent 172acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 173debug version of the code includes the debug output trace mechanism and has a 174much larger code and data size. 175 176 Previous Release: 177 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 178 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 179 Current Release: 180 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 181 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 182 1832) iASL Compiler/Disassembler and Tools: 184 185Disassembler: Fixed a problem where references to external symbols that 186contained one or more parent-prefixes (carats) were not handled correctly, 187possibly causing a fault. ACPICA BZ 806. Lin Ming. 188 189Disassembler: Restructured the code so that all functions that handle 190external symbols are in a single module. One new file is added, 191common/dmextern.c. 192 193AML Debugger: Added a max count argument for the Batch command (which 194executes multiple predefined methods within the namespace.) 195 196iASL: Updated the compiler documentation (User Reference.) Available at 197http://www.acpica.org/documentation/. ACPICA BZ 750. 198 199AcpiXtract: Updated for Lint and other formatting changes. Close all open 200files. 201 202---------------------------------------- 20303 September 2009. Summary of changes for version 20090903: 204 2051) ACPI CA Core Subsystem: 206 207For Windows Vista compatibility, added the automatic execution of an _INI 208method located at the namespace root (\_INI). This method is executed at 209table load time. This support is in addition to the automatic execution of 210\_SB._INI. Lin Ming. 211 212Fixed a possible memory leak in the interpreter for AML package objects if 213the package initializer list is longer than the defined size of the package. 214This apparently can only happen if the BIOS changes the package size on the 215fly (seen in a _PSS object), as ASL compilers do not allow this. The 216interpreter will truncate the package to the defined size (and issue an error 217message), but previously could leave the extra objects undeleted if they were 218pre-created during the argument processing (such is the case if the package 219consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805. 220 221Fixed a problem seen when a Buffer or String is stored to itself via ASL. 222This has been reported in the field. Previously, ACPICA would zero out the 223buffer/string. Now, the operation is treated as a noop. Provides Windows 224compatibility. ACPICA BZ 803. Lin Ming. 225 226Removed an extraneous error message for ASL constructs of the form 227Store(LocalX,LocalX) when LocalX is uninitialized. These curious statements 228are seen in many BIOSs and are once again treated as NOOPs and no error is 229emitted when they are encountered. ACPICA BZ 785. 230 231Fixed an extraneous warning message if a _DSM reserved method returns a 232Package object. _DSM can return any type of object, so validation on the 233return type cannot be performed. ACPICA BZ 802. 234 235Example Code and Data Size: These are the sizes for the OS-independent 236acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 237debug version of the code includes the debug output trace mechanism and has a 238much larger code and data size. 239 240 Previous Release: 241 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 242 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 243 Current Release: 244 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 245 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 246 2472) iASL Compiler/Disassembler and Tools: 248 249iASL: Fixed a problem with the use of the Alias operator and Resource 250Templates. The correct alias is now constructed and no error is emitted. 251ACPICA BZ 738. 252 253iASL: Implemented the -I option to specify additional search directories for 254include files. Allows multiple additional search paths for include files. 255Directories are searched in the order specified on the command line (after 256the local directory is searched.) ACPICA BZ 800. 257 258iASL: Fixed a problem where the full pathname for include files was not 259emitted for warnings/errors. This caused the IDE support to not work 260properly. ACPICA BZ 765. 261 262iASL: Implemented the -@ option to specify a Windows-style response file 263containing additional command line options. ACPICA BZ 801. 264 265AcpiExec: Added support to load multiple AML files simultaneously (such as a 266DSDT and multiple SSDTs). Also added support for wildcards within the AML 267pathname. These features allow all machine tables to be easily loaded and 268debugged together. ACPICA BZ 804. 269 270Disassembler: Added missing support for disassembly of HEST table Error Bank 271subtables. 272 273---------------------------------------- 27430 July 2009. Summary of changes for version 20090730: 275 276The ACPI 4.0 implementation for ACPICA is complete with this release. 277 2781) ACPI CA Core Subsystem: 279 280ACPI 4.0: Added header file support for all new and changed ACPI tables. 281Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are new 282for ACPI 4.0, but have previously been supported in ACPICA are: CPEP, BERT, 283EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT. There 284have been some ACPI 4.0 changes to other existing tables. Split the large 285actbl1.h header into the existing actbl2.h header. ACPICA BZ 774. 286 287ACPI 4.0: Implemented predefined name validation for all new names. There are 28831 new names in ACPI 4.0. The predefined validation module was split into two 289files. The new file is namespace/nsrepair.c. ACPICA BZ 770. 290 291Implemented support for so-called "module-level executable code". This is 292executable AML code that exists outside of any control method and is intended 293to be executed at table load time. Although illegal since ACPI 2.0, this type 294of code still exists and is apparently still being created. Blocks of this 295code are now detected and executed as intended. Currently, the code blocks 296must exist under either an If, Else, or While construct; these are the 297typical cases seen in the field. ACPICA BZ 762. Lin Ming. 298 299Implemented an automatic dynamic repair for predefined names that return 300nested Package objects. This applies to predefined names that are defined to 301return a variable-length Package of sub-packages. If the number of sub- 302packages is one, BIOS code is occasionally seen that creates a simple single 303package with no sub-packages. This code attempts to fix the problem by 304wrapping a new package object around the existing package. These methods can 305be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA BZ 306790. 307 308Fixed a regression introduced in 20090625 for the AcpiGetDevices interface. 309The _HID/_CID matching was broken and no longer matched IDs correctly. ACPICA 310BZ 793. 311 312Fixed a problem with AcpiReset where the reset would silently fail if the 313register was one of the protected I/O ports. AcpiReset now bypasses the port 314validation mechanism. This may eventually be driven into the AcpiRead/Write 315interfaces. 316 317Fixed a regression related to the recent update of the AcpiRead/Write 318interfaces. A sleep/suspend could fail if the optional PM2 Control register 319does not exist during an attempt to write the Bus Master Arbitration bit. 320(However, some hosts already delete the code that writes this bit, and the 321code may in fact be obsolete at this date.) ACPICA BZ 799. 322 323Fixed a problem where AcpiTerminate could fault if inadvertently called twice 324in succession. ACPICA BZ 795. 325 326Example Code and Data Size: These are the sizes for the OS-independent 327acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 328debug version of the code includes the debug output trace mechanism and has a 329much larger code and data size. 330 331 Previous Release: 332 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 333 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 334 Current Release: 335 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 336 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 337 3382) iASL Compiler/Disassembler and Tools: 339 340ACPI 4.0: Implemented disassembler support for all new ACPI tables and 341changes to existing tables. ACPICA BZ 775. 342 343---------------------------------------- 34425 June 2009. Summary of changes for version 20090625: 345 346The ACPI 4.0 Specification was released on June 16 and is available at 347www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will 348continue for the next few releases. 349 3501) ACPI CA Core Subsystem: 351 352ACPI 4.0: Implemented interpreter support for the IPMI operation region 353address space. Includes support for bi-directional data buffers and an IPMI 354address space handler (to be installed by an IPMI device driver.) ACPICA BZ 355773. Lin Ming. 356 357ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. Includes 358support in both the header files and the disassembler. 359 360Completed a major update for the AcpiGetObjectInfo external interface. 361Changes include: 362 - Support for variable, unlimited length HID, UID, and CID strings. 363 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, etc.) 364 - Call the _SxW power methods on behalf of a device object. 365 - Determine if a device is a PCI root bridge. 366 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO. 367These changes will require an update to all callers of this interface. See 368the updated ACPICA Programmer Reference for details. One new source file has 369been added - utilities/utids.c. ACPICA BZ 368, 780. 370 371Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit 372transfers. The Value parameter has been extended from 32 bits to 64 bits in 373order to support new ACPI 4.0 tables. These changes will require an update to 374all callers of these interfaces. See the ACPICA Programmer Reference for 375details. ACPICA BZ 768. 376 377Fixed several problems with AcpiAttachData. The handler was not invoked when 378the host node was deleted. The data sub-object was not automatically deleted 379when the host node was deleted. The interface to the handler had an unused 380parameter, this was removed. ACPICA BZ 778. 381 382Enhanced the function that dumps ACPI table headers. All non-printable 383characters in the string fields are now replaced with '?' (Signature, OemId, 384OemTableId, and CompilerId.) ACPI tables with non-printable characters in 385these fields are occasionally seen in the field. ACPICA BZ 788. 386 387Fixed a problem with predefined method repair code where the code that 388attempts to repair/convert an object of incorrect type is only executed on 389the first time the predefined method is called. The mechanism that disables 390warnings on subsequent calls was interfering with the repair mechanism. 391ACPICA BZ 781. 392 393Fixed a possible memory leak in the predefined validation/repair code when a 394buffer is automatically converted to an expected string object. 395 396Removed obsolete 16-bit files from the distribution and from the current git 397tree head. ACPICA BZ 776. 398 399Example Code and Data Size: These are the sizes for the OS-independent 400acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 401debug version of the code includes the debug output trace mechanism and has a 402much larger code and data size. 403 404 Previous Release: 405 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 406 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 407 Current Release: 408 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 409 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 410 4112) iASL Compiler/Disassembler and Tools: 412 413ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI 414operation region keyword. ACPICA BZ 771, 772. Lin Ming. 415 416ACPI 4.0: iASL - implemented compile-time validation support for all new 417predefined names and control methods (31 total). ACPICA BZ 769. 418 419---------------------------------------- 42021 May 2009. Summary of changes for version 20090521: 421 4221) ACPI CA Core Subsystem: 423 424Disabled the preservation of the SCI enable bit in the PM1 control register. 425The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification to be 426a "preserved" bit - "OSPM always preserves this bit position", section 4274.7.3.2.1. However, some machines fail if this bit is in fact preserved 428because the bit needs to be explicitly set by the OS as a workaround. No 429machines fail if the bit is not preserved. Therefore, ACPICA no longer 430attempts to preserve this bit. 431 432Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or 433incorrectly formed _PRT package could cause a fault. Added validation to 434ensure that each package element is actually a sub-package. 435 436Implemented a new interface to install or override a single control method, 437AcpiInstallMethod. This interface is useful when debugging in order to repair 438an existing method or to install a missing method without having to override 439the entire ACPI table. See the ACPICA Programmer Reference for use and 440examples. Lin Ming, Bob Moore. 441 442Fixed several reference count issues with the DdbHandle object that is 443created from a Load or LoadTable operator. Prevent premature deletion of the 444object. Also, mark the object as invalid once the table has been unloaded. 445This is needed because the handle itself may not be deleted after the table 446unload, depending on whether it has been stored in a named object by the 447caller. Lin Ming. 448 449Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple 450mutexes of the same sync level are acquired but then not released in strict 451opposite order, the internally maintained Current Sync Level becomes confused 452and can cause subsequent execution errors. ACPICA BZ 471. 453 454Changed the allowable release order for ASL mutex objects. The ACPI 4.0 455specification has been changed to make the SyncLevel for mutex objects more 456useful. When releasing a mutex, the SyncLevel of the mutex must now be the 457same as the current sync level. This makes more sense than the previous rule 458(SyncLevel less than or equal). This change updates the code to match the 459specification. 460 461Fixed a problem with the local version of the AcpiOsPurgeCache function. The 462(local) cache must be locked during all cache object deletions. Andrew 463Baumann. 464 465Updated the Load operator to use operation region interfaces. This replaces 466direct memory mapping with region access calls. Now, all region accesses go 467through the installed region handler as they should. 468 469Simplified and optimized the NsGetNextNode function. Reduced parameter count 470and reduced code for this frequently used function. 471 472Example Code and Data Size: These are the sizes for the OS-independent 473acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 474debug version of the code includes the debug output trace mechanism and has a 475much larger code and data size. 476 477 Previous Release: 478 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 479 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 480 Current Release: 481 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 482 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 483 4842) iASL Compiler/Disassembler and Tools: 485 486Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some problems 487with sub-table disassembly and handling invalid sub-tables. Attempt recovery 488after an invalid sub-table ID. 489 490---------------------------------------- 49122 April 2009. Summary of changes for version 20090422: 492 4931) ACPI CA Core Subsystem: 494 495Fixed a compatibility issue with the recently released I/O port protection 496mechanism. For windows compatibility, 1) On a port protection violation, 497simply ignore the request and do not return an exception (allow the control 498method to continue execution.) 2) If only part of the request overlaps a 499protected port, read/write the individual ports that are not protected. Linux 500BZ 13036. Lin Ming 501 502Enhanced the execution of the ASL/AML BreakPoint operator so that it actually 503breaks into the AML debugger if the debugger is present. This matches the 504ACPI-defined behavior. 505 506Fixed several possible warnings related to the use of the configurable 507ACPI_THREAD_ID. This type can now be configured as either an integer or a 508pointer with no warnings. Also fixes several warnings in printf-like 509statements for the 64-bit build when the type is configured as a pointer. 510ACPICA BZ 766, 767. 511 512Fixed a number of possible warnings when compiling with gcc 4+ (depending on 513warning options.) Examples include printf formats, aliasing, unused globals, 514missing prototypes, missing switch default statements, use of non-ANSI 515library functions, use of non-ANSI constructs. See generate/unix/Makefile for 516a list of warning options used with gcc 3 and 4. ACPICA BZ 735. 517 518Example Code and Data Size: These are the sizes for the OS-independent 519acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 520debug version of the code includes the debug output trace mechanism and has a 521much larger code and data size. 522 523 Previous Release: 524 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 525 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 526 Current Release: 527 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 528 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 529 5302) iASL Compiler/Disassembler and Tools: 531 532iASL: Fixed a generation warning from Bison 2.3 and fixed several warnings on 533the 64-bit build. 534 535iASL: Fixed a problem where the Unix/Linux versions of the compiler could not 536correctly digest Windows/DOS formatted files (with CR/LF). 537 538iASL: Added a new option for "quiet mode" (-va) that produces only the 539compilation summary, not individual errors and warnings. Useful for large 540batch compilations. 541 542AcpiExec: Implemented a new option (-z) to enable a forced semaphore/mutex 543timeout that can be used to detect hang conditions during execution of AML 544code (includes both internal semaphores and AML-defined mutexes and events.) 545 546Added new makefiles for the generation of acpica in a generic unix-like 547environment. These makefiles are intended to generate the acpica tools and 548utilities from the original acpica git source tree structure. 549 550Test Suites: Updated and cleaned up the documentation files. Updated the 551copyrights to 2009, affecting all source files. Use the new version of iASL 552with quiet mode. Increased the number of available semaphores in the Windows 553OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, added 554an alternate implementation of the semaphore timeout to allow aslts to 555execute fully on Cygwin. 556 557---------------------------------------- 55820 March 2009. Summary of changes for version 20090320: 559 5601) ACPI CA Core Subsystem: 561 562Fixed a possible race condition between AcpiWalkNamespace and dynamic table 563unloads. Added a reader/writer locking mechanism to allow multiple concurrent 564namespace walks (readers), but block a dynamic table unload until it can gain 565exclusive write access to the namespace. This fixes a problem where a table 566unload could (possibly catastrophically) delete the portion of the namespace 567that is currently being examined by a walk. Adds a new file, utlock.c, that 568implements the reader/writer lock mechanism. ACPICA BZ 749. 569 570Fixed a regression introduced in version 20090220 where a change to the FADT 571handling could cause the ACPICA subsystem to access non-existent I/O ports. 572 573Modified the handling of FADT register and table (FACS/DSDT) addresses. The 574FADT can contain both 32-bit and 64-bit versions of these addresses. 575Previously, the 64-bit versions were favored, meaning that if both 32 and 64 576versions were valid, but not equal, the 64-bit version was used. This was 577found to cause some machines to fail. Now, in this case, the 32-bit version 578is used instead. This now matches the Windows behavior. 579 580Implemented a new mechanism to protect certain I/O ports. Provides Microsoft 581compatibility and protects the standard PC I/O ports from access via AML 582code. Adds a new file, hwvalid.c 583 584Fixed a possible extraneous warning message from the FADT support. The 585message warns of a 32/64 length mismatch between the legacy and GAS 586definitions for a register. 587 588Removed the obsolete AcpiOsValidateAddress OSL interface. This interface is 589made obsolete by the port protection mechanism above. It was previously used 590to validate the entire address range of an operation region, which could be 591incorrect if the range included illegal ports, but fields within the 592operation region did not actually access those ports. Validation is now 593performed on a per-field basis instead of the entire region. 594 595Modified the handling of the PM1 Status Register ignored bit (bit 11.) 596Ignored bits must be "preserved" according to the ACPI spec. Usually, this 597means a read/modify/write when writing to the register. However, for status 598registers, writing a one means clear the event. Writing a zero means preserve 599the event (do not clear.) This behavior is clarified in the ACPI 4.0 spec, 600and the ACPICA code now simply always writes a zero to the ignored bit. 601 602Modified the handling of ignored bits for the PM1 A/B Control Registers. As 603per the ACPI specification, for the control registers, preserve 604(read/modify/write) all bits that are defined as either reserved or ignored. 605 606Updated the handling of write-only bits in the PM1 A/B Control Registers. 607When reading the register, zero the write-only bits as per the ACPI spec. 608ACPICA BZ 443. Lin Ming. 609 610Removed "Linux" from the list of supported _OSI strings. Linux no longer 611wants to reply true to this request. The Windows strings are the only paths 612through the AML that are tested and known to work properly. 613 614 Previous Release: 615 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 616 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 617 Current Release: 618 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 619 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 620 6212) iASL Compiler/Disassembler and Tools: 622 623Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c and 624aetables.c 625 626---------------------------------------- 62720 February 2009. Summary of changes for version 20090220: 628 6291) ACPI CA Core Subsystem: 630 631Optimized the ACPI register locking. Removed locking for reads from the ACPI 632bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock is 633not required when reading the single-bit registers. The 634AcpiGetRegisterUnlocked function is no longer needed and has been removed. 635This will improve performance for reads on these registers. ACPICA BZ 760. 636 637Fixed the parameter validation for AcpiRead/Write. Now return 638AE_BAD_PARAMETER if the input register pointer is null, and AE_BAD_ADDRESS if 639the register has an address of zero. Previously, these cases simply returned 640AE_OK. For optional registers such as PM1B status/enable/control, the caller 641should check for a valid register address before calling. ACPICA BZ 748. 642 643Renamed the external ACPI bit register access functions. Renamed 644AcpiGetRegister and AcpiSetRegister to clarify the purpose of these 645functions. The new names are AcpiReadBitRegister and AcpiWriteBitRegister. 646Also, restructured the code for these functions by simplifying the code path 647and condensing duplicate code to reduce code size. 648 649Added new functions to transparently handle the possibly split PM1 A/B 650registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two functions 651now handle the split registers for PM1 Status, Enable, and Control. ACPICA BZ 652746. 653 654Added a function to handle the PM1 control registers, AcpiHwWritePm1Control. 655This function writes both of the PM1 control registers (A/B). These registers 656are different than the PM1 A/B status and enable registers in that different 657values can be written to the A/B registers. Most notably, the SLP_TYP bits 658can be different, as per the values returned from the _Sx predefined methods. 659 660Removed an extra register write within AcpiHwClearAcpiStatus. This function 661was writing an optional PM1B status register twice. The existing call to the 662low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 A/B 663register. ACPICA BZ 751. 664 665Split out the PM1 Status registers from the FADT. Added new globals for these 666registers (A/B), similar to the way the PM1 Enable registers are handled. 667Instead of overloading the FADT Event Register blocks. This makes the code 668clearer and less prone to error. 669 670Fixed the warning message for when the platform contains too many ACPI tables 671for the default size of the global root table data structure. The calculation 672for the truncation value was incorrect. 673 674Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this 675obsolete macro, since it is now a simple reference to ->common.type. There 676were about 150 invocations of the macro across 41 files. ACPICA BZ 755. 677 678Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as 679TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to 680simply SLEEP_TYPE. ACPICA BZ 754. 681 682Conditionally compile the AcpiSetFirmwareWakingVector64 function. This 683function is only needed on 64-bit host operating systems and is thus not 684included for 32-bit hosts. 685 686Debug output: print the input and result for invocations of the _OSI reserved 687control method via the ACPI_LV_INFO debug level. Also, reduced some of the 688verbosity of this debug level. Len Brown. 689 690Example Code and Data Size: These are the sizes for the OS-independent 691acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 692debug version of the code includes the debug output trace mechanism and has a 693much larger code and data size. 694 695 Previous Release: 696 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 697 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 698 Current Release: 699 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 700 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 701 7022) iASL Compiler/Disassembler and Tools: 703 704Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the 705various legal performance profiles. 706 707---------------------------------------- 70823 January 2009. Summary of changes for version 20090123: 709 7101) ACPI CA Core Subsystem: 711 712Added the 2009 copyright to all module headers and signons. This affects 713virtually every file in the ACPICA core subsystem, the iASL compiler, and 714the tools/utilities. 715 716Implemented a change to allow the host to override any ACPI table, including 717dynamically loaded tables. Previously, only the DSDT could be replaced by the 718host. With this change, the AcpiOsTableOverride interface is called for each 719table found in the RSDT/XSDT during ACPICA initialization, and also whenever 720a table is dynamically loaded via the AML Load operator. 721 722Updated FADT flag definitions, especially the Boot Architecture flags. 723 724Debugger: For the Find command, automatically pad the input ACPI name with 725underscores if the name is shorter than 4 characters. This enables a match 726with the actual namespace entry which is itself padded with underscores. 727 728Example Code and Data Size: These are the sizes for the OS-independent 729acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 730debug version of the code includes the debug output trace mechanism and has a 731much larger code and data size. 732 733 Previous Release: 734 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 735 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 736 Current Release: 737 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 738 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 739 7402) iASL Compiler/Disassembler and Tools: 741 742Fix build error under Bison-2.4. 743 744Dissasembler: Enhanced FADT support. Added decoding of the Boot Architecture 745flags. Now decode all flags, regardless of the FADT version. Flag output 746includes the FADT version which first defined each flag. 747 748The iASL -g option now dumps the RSDT to a file (in addition to the FADT and 749DSDT). Windows only. 750 751---------------------------------------- 75204 December 2008. Summary of changes for version 20081204: 753 7541) ACPI CA Core Subsystem: 755 756The ACPICA Programmer Reference has been completely updated and revamped for 757this release. This includes updates to the external interfaces, OSL 758interfaces, the overview sections, and the debugger reference. 759 760Several new ACPICA interfaces have been implemented and documented in the 761programmer reference: 762AcpiReset - Writes the reset value to the FADT-defined reset register. 763AcpiDisableAllGpes - Disable all available GPEs. 764AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs. 765AcpiGetGpeDevice - Get the GPE block device associated with a GPE. 766AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs. 767AcpiRead - Low-level read ACPI register (was HwLowLevelRead.) 768AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.) 769 770Most of the public ACPI hardware-related interfaces have been moved to a new 771file, components/hardware/hwxface.c 772 773Enhanced the FADT parsing and low-level ACPI register access: The ACPI 774register lengths within the FADT are now used, and the low level ACPI 775register access no longer hardcodes the ACPI register lengths. Given that 776there may be some risk in actually trusting the FADT register lengths, a run- 777time option was added to fall back to the default hardcoded lengths if the 778FADT proves to contain incorrect values - UseDefaultRegisterWidths. This 779option is set to true for now, and a warning is issued if a suspicious FADT 780register length is overridden with the default value. 781 782Fixed a reference count issue in NsRepairObject. This problem was introduced 783in version 20081031 as part of a fix to repair Buffer objects within 784Packages. Lin Ming. 785 786Added semaphore support to the Linux/Unix application OS-services layer 787(OSL). ACPICA BZ 448. Lin Ming. 788 789Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes will 790be implemented in the OSL, or will binary semaphores be used instead. 791 792Example Code and Data Size: These are the sizes for the OS-independent 793acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 794debug version of the code includes the debug output trace mechanism and has a 795much larger code and data size. 796 797 Previous Release: 798 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 799 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 800 Current Release: 801 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 802 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 803 8042) iASL Compiler/Disassembler and Tools: 805 806iASL: Completed the '-e' option to include additional ACPI tables in order to 807aid with disassembly and External statement generation. ACPICA BZ 742. Lin 808Ming. 809 810iASL: Removed the "named object in while loop" error. The compiler cannot 811determine how many times a loop will execute. ACPICA BZ 730. 812 813Disassembler: Implemented support for FADT revision 2 (MS extension). ACPICA 814BZ 743. 815 816Disassembler: Updates for several ACPI data tables (HEST, EINJ, and MCFG). 817 818---------------------------------------- 81931 October 2008. Summary of changes for version 20081031: 820 8211) ACPI CA Core Subsystem: 822 823Restructured the ACPICA header files into public/private. acpi.h now includes 824only the "public" acpica headers. All other acpica headers are "private" and 825should not be included by acpica users. One new file, accommon.h is used to 826include the commonly used private headers for acpica code generation. Future 827plans include moving all private headers to a new subdirectory. 828 829Implemented an automatic Buffer->String return value conversion for 830predefined ACPI methods. For these methods (such as _BIF), added automatic 831conversion for return objects that are required to be a String, but a Buffer 832was found instead. This can happen when reading string battery data from an 833operation region, because it used to be difficult to convert the data from 834buffer to string from within the ASL. Ensures that the host OS is provided 835with a valid null-terminated string. Linux BZ 11822. 836 837Updated the FACS waking vector interfaces. Split AcpiSetFirmwareWakingVector 838into two: one for the 32-bit vector, another for the 64-bit vector. This is 839required because the host OS must setup the wake much differently for each 840vector (real vs. protected mode, etc.) and the interface itself should not be 841deciding which vector to use. Also, eliminated the GetFirmwareWakingVector 842interface, as it served no purpose (only the firmware reads the vector, OS 843only writes the vector.) ACPICA BZ 731. 844 845Implemented a mechanism to escape infinite AML While() loops. Added a loop 846counter to force exit from AML While loops if the count becomes too large. 847This can occur in poorly written AML when the hardware does not respond 848within a while loop and the loop does not implement a timeout. The maximum 849loop count is configurable. A new exception code is returned when a loop is 850broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore. 851 852Optimized the execution of AML While loops. Previously, a control state 853object was allocated and freed for each execution of the loop. The 854optimization is to simply reuse the control state for each iteration. This 855speeds up the raw loop execution time by about 5%. 856 857Enhanced the implicit return mechanism. For Windows compatibility, return an 858implicit integer of value zero for methods that contain no executable code. 859Such methods are seen in the field as stubs (presumably), and can cause 860drivers to fail if they expect a return value. Lin Ming. 861 862Allow multiple backslashes as root prefixes in namepaths. In a fully 863qualified namepath, allow multiple backslash prefixes. This can happen (and 864is seen in the field) because of the use of a double-backslash in strings 865(since backslash is the escape character) causing confusion. ACPICA BZ 739 866Lin Ming. 867 868Emit a warning if two different FACS or DSDT tables are discovered in the 869FADT. Checks if there are two valid but different addresses for the FACS and 870DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.) 871 872Consolidated the method argument count validation code. Merged the code that 873validates control method argument counts into the predefined validation 874module. Eliminates possible multiple warnings for incorrect argument counts. 875 876Implemented ACPICA example code. Includes code for ACPICA initialization, 877handler installation, and calling a control method. Available at 878source/tools/examples. 879 880Added a global pointer for FACS table to simplify internal FACS access. Use 881the global pointer instead of using AcpiGetTableByIndex for each FACS access. 882This simplifies the code for the Global Lock and the Firmware Waking 883Vector(s). 884 885Example Code and Data Size: These are the sizes for the OS-independent 886acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 887debug version of the code includes the debug output trace mechanism and has a 888much larger code and data size. 889 890 Previous Release: 891 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 892 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 893 Current Release: 894 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 895 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 896 8972) iASL Compiler/Disassembler and Tools: 898 899iASL: Improved disassembly of external method calls. Added the -e option to 900allow the inclusion of additional ACPI tables to help with the disassembly of 901method invocations and the generation of external declarations during the 902disassembly. Certain external method invocations cannot be disassembled 903properly without the actual declaration of the method. Use the -e option to 904include the table where the external method(s) are actually declared. Most 905useful for disassembling SSDTs that make method calls back to the master 906DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl -d 907-e dsdt.aml ssdt1.aml 908 909iASL: Fix to allow references to aliases within ASL namepaths. Fixes a 910problem where the use of an alias within a namepath would result in a not 911found error or cause the compiler to fault. Also now allows forward 912references from the Alias operator itself. ACPICA BZ 738. 913 914---------------------------------------- 91526 September 2008. Summary of changes for version 20080926: 916 9171) ACPI CA Core Subsystem: 918 919Designed and implemented a mechanism to validate predefined ACPI methods and 920objects. This code validates the predefined ACPI objects (objects whose names 921start with underscore) that appear in the namespace, at the time they are 922evaluated. The argument count and the type of the returned object are 923validated against the ACPI specification. The purpose of this validation is 924to detect problems with the BIOS-implemented predefined ACPI objects before 925the results are returned to the ACPI-related drivers. Future enhancements may 926include actual repair of incorrect return objects where possible. Two new 927files are nspredef.c and acpredef.h. 928 929Fixed a fault in the AML parser if a memory allocation fails during the Op 930completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492. 931 932Fixed an issue with implicit return compatibility. This change improves the 933implicit return mechanism to be more compatible with the MS interpreter. Lin 934Ming, ACPICA BZ 349. 935 936Implemented support for zero-length buffer-to-string conversions. Allow zero 937length strings during interpreter buffer-to-string conversions. For example, 938during the ToDecimalString and ToHexString operators, as well as implicit 939conversions. Fiodor Suietov, ACPICA BZ 585. 940 941Fixed two possible memory leaks in the error exit paths of 942AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions are 943similar in that they use a stack of state objects in order to eliminate 944recursion. The stack must be fully unwound and deallocated if an error 945occurs. Lin Ming. ACPICA BZ 383. 946 947Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the global 948ACPI register table. This bit does not exist and is unused. Lin Ming, Bob 949Moore ACPICA BZ 442. 950 951Removed the obsolete version number in module headers. Removed the 952"$Revision" number that appeared in each module header. This version number 953was useful under SourceSafe and CVS, but has no meaning under git. It is not 954only incorrect, it could also be misleading. 955 956Example Code and Data Size: These are the sizes for the OS-independent 957acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 958debug version of the code includes the debug output trace mechanism and has a 959much larger code and data size. 960 961 Previous Release: 962 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 963 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 964 Current Release: 965 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 966 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 967 968---------------------------------------- 96929 August 2008. Summary of changes for version 20080829: 970 9711) ACPI CA Core Subsystem: 972 973Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type 974Reference. Changes include the elimination of cheating on the Object field 975for the DdbHandle subtype, addition of a reference class field to 976differentiate the various reference types (instead of an AML opcode), and the 977cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723 978 979Reduce an error to a warning for an incorrect method argument count. 980Previously aborted with an error if too few arguments were passed to a 981control method via the external ACPICA interface. Now issue a warning instead 982and continue. Handles the case where the method inadvertently declares too 983many arguments, but does not actually use the extra ones. Applies mainly to 984the predefined methods. Lin Ming. Linux BZ 11032. 985 986Disallow the evaluation of named object types with no intrinsic value. Return 987AE_TYPE for objects that have no value and therefore evaluation is undefined: 988Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation of 989these types were allowed, but an exception would be generated at some point 990during the evaluation. Now, the error is generated up front. 991 992Fixed a possible memory leak in the AcpiNsGetExternalPathname function 993(nsnames.c). Fixes a leak in the error exit path. 994 995Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These debug 996levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and ACPI_EXCEPTION 997interfaces. Also added ACPI_DB_EVENTS to correspond with the existing 998ACPI_LV_EVENTS. 999 1000Removed obsolete and/or unused exception codes from the acexcep.h header. 1001There is the possibility that certain device drivers may be affected if they 1002use any of these exceptions. 1003 1004The ACPICA documentation has been added to the public git source tree, under 1005acpica/documents. Included are the ACPICA programmer reference, the iASL 1006compiler reference, and the changes.txt release logfile. 1007 1008Example Code and Data Size: These are the sizes for the OS-independent 1009acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1010debug version of the code includes the debug output trace mechanism and has a 1011much larger code and data size. 1012 1013 Previous Release: 1014 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 1015 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 1016 Current Release: 1017 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 1018 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 1019 10202) iASL Compiler/Disassembler and Tools: 1021 1022Allow multiple argument counts for the predefined _SCP method. ACPI 3.0 1023defines _SCP with 3 arguments. Previous versions defined it with only 1 1024argument. iASL now allows both definitions. 1025 1026iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for zero- 1027length subtables when disassembling ACPI tables. Also fixed a couple of 1028errors where a full 16-bit table type field was not extracted from the input 1029properly. 1030 1031acpisrc: Improve comment counting mechanism for generating source code 1032statistics. Count first and last lines of multi-line comments as whitespace, 1033not comment lines. Handle Linux legal header in addition to standard acpica 1034header. 1035 1036---------------------------------------- 1037 103829 July 2008. Summary of changes for version 20080729: 1039 1040This release is available at http://acpica.org/downloads 1041Direct git access via http://www.acpica.org/repos/acpica.git 1042 10431) ACPI CA Core Subsystem: 1044 1045Fix a possible deadlock in the GPE dispatch. Remove call to 1046AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will attempt 1047to acquire the GPE lock but can deadlock since the GPE lock is already held 1048at dispatch time. This code was introduced in version 20060831 as a response 1049to Linux BZ 6881 and has since been removed from Linux. 1050 1051Add a function to dereference returned reference objects. Examines the return 1052object from a call to AcpiEvaluateObject. Any Index or RefOf references are 1053automatically dereferenced in an attempt to return something useful (these 1054reference types cannot be converted into an external ACPI_OBJECT.) Provides 1055MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105 1056 1057x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new 1058subtables for the MADT and one new subtable for the SRAT. Includes 1059disassembler and AcpiSrc support. Data from the Intel 64 Architecture x2APIC 1060Specification, June 2008. 1061 1062Additional error checking for pathname utilities. Add error check after all 1063calls to AcpiNsGetPathnameLength. Add status return from 1064AcpiNsBuildExternalPath and check after all calls. Add parameter validation 1065to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar. 1066 1067Return status from the global init function AcpiUtGlobalInitialize. This is 1068used by both the kernel subsystem and the utilities such as iASL compiler. 1069The function could possibly fail when the caches are initialized. Yang Yi. 1070 1071Add a function to decode reference object types to strings. Created for 1072improved error messages. 1073 1074Improve object conversion error messages. Better error messages during object 1075conversion from internal to the external ACPI_OBJECT. Used for external calls 1076to AcpiEvaluateObject. 1077 1078Example Code and Data Size: These are the sizes for the OS-independent 1079acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1080debug version of the code includes the debug output trace mechanism and has a 1081much larger code and data size. 1082 1083 Previous Release: 1084 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 1085 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 1086 Current Release: 1087 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 1088 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 1089 10902) iASL Compiler/Disassembler and Tools: 1091 1092Debugger: fix a possible hang when evaluating non-methods. Fixes a problem 1093introduced in version 20080701. If the object being evaluated (via execute 1094command) is not a method, the debugger can hang while trying to obtain non- 1095existent parameters. 1096 1097iASL: relax error for using reserved "_T_x" identifiers. These names can 1098appear in a disassembled ASL file if they were emitted by the original 1099compiler. Instead of issuing an error or warning and forcing the user to 1100manually change these names, issue a remark instead. 1101 1102iASL: error if named object created in while loop. Emit an error if any named 1103object is created within a While loop. If allowed, this code will generate a 1104run-time error on the second iteration of the loop when an attempt is made to 1105create the same named object twice. ACPICA bugzilla 730. 1106 1107iASL: Support absolute pathnames for include files. Add support for absolute 1108pathnames within the Include operator. previously, only relative pathnames 1109were supported. 1110 1111iASL: Enforce minimum 1 interrupt in interrupt macro and Resource Descriptor. 1112The ACPI spec requires one interrupt minimum. BZ 423 1113 1114iASL: Handle a missing ResourceSource arg, with a present SourceIndex. 1115Handles the case for the Interrupt Resource Descriptor where 1116the ResourceSource argument is omitted but ResourceSourceIndex 1117is present. Now leave room for the Index. BZ 426 1118 1119iASL: Prevent error message if CondRefOf target does not exist. Fixes cases 1120where an error message is emitted if the target does not exist. BZ 516 1121 1122iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option 1123(get ACPI tables on Windows). This was apparently broken in version 20070919. 1124 1125AcpiXtract: Handle EOF while extracting data. Correctly handle the case where 1126the EOF happens immediately after the last table in the input file. Print 1127completion message. Previously, no message was displayed in this case. 1128 1129---------------------------------------- 113001 July 2008. Summary of changes for version 20080701: 1131 1132This release is available at http://acpica.org/downloads 1133Direct git access via http://www.acpica.org/repos/acpica.git 1134 11350) Git source tree / acpica.org 1136 1137Fixed a problem where a git-clone from http would not transfer the entire 1138source tree. 1139 11401) ACPI CA Core Subsystem: 1141 1142Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one 1143enable bit. Now performs a read-change-write of the enable register instead 1144of simply writing out the cached enable mask. This will prevent inadvertent 1145enabling of GPEs if a rogue GPE is received during initialization (before GPE 1146handlers are installed.) 1147 1148Implemented a copy for dynamically loaded tables. Previously, dynamically 1149loaded tables were simply mapped - but on some machines this memory is 1150corrupted after suspend. Now copy the table to a local buffer. For the 1151OpRegion case, added checksum verify. Use the table length from the table 1152header, not the region length. For the Buffer case, use the table length 1153also. Dennis Noordsij, Bob Moore. BZ 10734 1154 1155Fixed a problem where the same ACPI table could not be dynamically loaded and 1156unloaded more than once. Without this change, a table cannot be loaded again 1157once it has been loaded/unloaded one time. The current mechanism does not 1158unregister a table upon an unload. During a load, if the same table is found, 1159this no longer returns an exception. BZ 722 1160 1161Fixed a problem where the wrong descriptor length was calculated for the 1162EndTag descriptor in 64-bit mode. The "minimal" descriptors such as EndTag 1163are calculated as 12 bytes long, but the actual length in the internal 1164descriptor is 16 because of the round-up to 8 on the 64-bit build. Reported 1165by Linn Crosetto. BZ 728 1166 1167Fixed a possible memory leak in the Unload operator. The DdbHandle returned 1168by Load() did not have its reference count decremented during unload, leading 1169to a memory leak. Lin Ming. BZ 727 1170 1171Fixed a possible memory leak when deleting thermal/processor objects. Any 1172associated notify handlers (and objects) were not being deleted. Fiodor 1173Suietov. BZ 506 1174 1175Fixed the ordering of the ASCII names in the global mutex table to match the 1176actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug only. 1177Vegard Nossum. BZ 726 1178 1179Enhanced the AcpiGetObjectInfo interface to return the number of required 1180arguments if the object is a control method. Added this call to the debugger 1181so the proper number of default arguments are passed to a method. This 1182prevents a warning when executing methods from AcpiExec. 1183 1184Added a check for an invalid handle in AcpiGetObjectInfo. Return 1185AE_BAD_PARAMETER if input handle is invalid. BZ 474 1186 1187Fixed an extraneous warning from exconfig.c on the 64-bit build. 1188 1189Example Code and Data Size: These are the sizes for the OS-independent 1190acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1191debug version of the code includes the debug output trace mechanism and has a 1192much larger code and data size. 1193 1194 Previous Release: 1195 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 1196 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 1197 Current Release: 1198 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 1199 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 1200 12012) iASL Compiler/Disassembler and Tools: 1202 1203iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both 1204resource descriptor names. 1205 1206iASL: Detect invalid ASCII characters in input (windows version). Removed the 1207"-CF" flag from the flex compile, enables correct detection of non-ASCII 1208characters in the input. BZ 441 1209 1210iASL: Eliminate warning when result of LoadTable is not used. Eliminate the 1211"result of operation not used" warning when the DDB handle returned from 1212LoadTable is not used. The warning is not needed. BZ 590 1213 1214AcpiExec: Add support for dynamic table load/unload. Now calls _CFG method to 1215pass address of table to the AML. Added option to disable OpRegion simulation 1216to allow creation of an OpRegion with a real address that was passed to _CFG. 1217All of this allows testing of the Load and Unload operators from AcpiExec. 1218 1219Debugger: update tables command for unloaded tables. Handle unloaded tables 1220and use the standard table header output routine. 1221 1222---------------------------------------- 122309 June 2008. Summary of changes for version 20080609: 1224 12251) ACPI CA Core Subsystem: 1226 1227Implemented a workaround for reversed _PRT entries. A significant number of 1228BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This 1229change dynamically detects and repairs this problem. Provides compatibility 1230with MS ACPI. BZ 6859 1231 1232Simplified the internal ACPI hardware interfaces to eliminate the locking 1233flag parameter from Register Read/Write. Added a new external interface, 1234AcpiGetRegisterUnlocked. 1235 1236Fixed a problem where the invocation of a GPE control method could hang. This 1237was a regression introduced in 20080514. The new method argument count 1238validation mechanism can enter an infinite loop when a GPE method is 1239dispatched. Problem fixed by removing the obsolete code that passed GPE block 1240information to the notify handler via the control method parameter pointer. 1241 1242Fixed a problem where the _SST execution status was incorrectly returned to 1243the caller of AcpiEnterSleepStatePrep. This was a regression introduced in 124420080514. _SST is optional and a NOT_FOUND exception should never be 1245returned. BZ 716 1246 1247Fixed a problem where a deleted object could be accessed from within the AML 1248parser. This was a regression introduced in version 20080123 as a fix for the 1249Unload operator. Lin Ming. BZ 10669 1250 1251Cleaned up the debug operand dump mechanism. Eliminated unnecessary operands 1252and eliminated the use of a negative index in a loop. Operands are now 1253displayed in the correct order, not backwards. This also fixes a regression 1254introduced in 20080514 on 64-bit systems where the elimination of 1255ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 715 1256 1257Fixed a possible memory leak in EvPciConfigRegionSetup where the error exit 1258path did not delete a locally allocated structure. 1259 1260Updated definitions for the DMAR and SRAT tables to synchronize with the 1261current specifications. Includes disassembler support. 1262 1263Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect 1264loop termination value was used. Loop terminated on iteration early, missing 1265one mutex. Linn Crosetto 1266 1267Example Code and Data Size: These are the sizes for the OS-independent 1268acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1269debug version of the code includes the debug output trace mechanism and has a 1270much larger code and data size. 1271 1272 Previous Release: 1273 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 1274 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 1275 Current Release: 1276 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 1277 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 1278 12792) iASL Compiler/Disassembler and Tools: 1280 1281Disassembler: Implemented support for EisaId() within _CID objects. Now 1282disassemble integer _CID objects back to EisaId invocations, including 1283multiple integers within _CID packages. Includes single-step support for 1284debugger also. 1285 1286Disassembler: Added support for DMAR and SRAT table definition changes. 1287 1288---------------------------------------- 128914 May 2008. Summary of changes for version 20080514: 1290 12911) ACPI CA Core Subsystem: 1292 1293Fixed a problem where GPEs were enabled too early during the ACPICA 1294initialization. This could lead to "handler not installed" errors on some 1295machines. Moved GPE enable until after _REG/_STA/_INI methods are run. This 1296ensures that all operation regions and devices throughout the namespace have 1297been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916. 1298 1299Implemented a change to the enter sleep code. Moved execution of the _GTS 1300method to just before setting sleep enable bit. The execution was moved from 1301AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed 1302immediately before the SLP_EN bit is set, as per the ACPI specification. 1303Luming Yu, BZ 1653. 1304 1305Implemented a fix to disable unknown GPEs (2nd version). Now always disable 1306the GPE, even if ACPICA thinks that that it is already disabled. It is 1307possible that the AML or some other code has enabled the GPE unbeknownst to 1308the ACPICA code. 1309 1310Fixed a problem with the Field operator where zero-length fields would return 1311an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length ASL 1312field declarations in Field(), BankField(), and IndexField(). BZ 10606. 1313 1314Implemented a fix for the Load operator, now load the table at the namespace 1315root. This reverts a change introduced in version 20071019. The table is now 1316loaded at the namespace root even though this goes against the ACPI 1317specification. This provides compatibility with other ACPI implementations. 1318The ACPI specification will be updated to reflect this in ACPI 4.0. Lin Ming. 1319 1320Fixed a problem where ACPICA would not Load() tables with unusual signatures. 1321Now ignore ACPI table signature for Load() operator. Only "SSDT" is 1322acceptable to the ACPI spec, but tables are seen with OEMx and null sigs. 1323Therefore, signature validation is worthless. Apparently MS ACPI accepts such 1324signatures, ACPICA must be compatible. BZ 10454. 1325 1326Fixed a possible negative array index in AcpiUtValidateException. Added NULL 1327fields to the exception string arrays to eliminate a -1 subtraction on the 1328SubStatus field. 1329 1330Updated the debug tracking macros to reduce overall code and data size. 1331Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings 1332instead of pointers to static strings. Jan Beulich and Bob Moore. 1333 1334Implemented argument count checking in control method invocation via 1335AcpiEvaluateObject. Now emit an error if too few arguments, warning if too 1336many. This applies only to extern programmatic control method execution, not 1337method-to-method calls within the AML. Lin Ming. 1338 1339Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is no 1340longer needed, especially with the removal of 16-bit support. It was replaced 1341mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 bit on 134232/64-bit platforms is required. 1343 1344Added the C const qualifier for appropriate string constants -- mostly 1345MODULE_NAME and printf format strings. Jan Beulich. 1346 1347Example Code and Data Size: These are the sizes for the OS-independent 1348acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1349debug version of the code includes the debug output trace mechanism and has a 1350much larger code and data size. 1351 1352 Previous Release: 1353 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 1354 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 1355 Current Release: 1356 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 1357 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 1358 13592) iASL Compiler/Disassembler and Tools: 1360 1361Implemented ACPI table revision ID validation in the disassembler. Zero is 1362always invalid. For DSDTs, the ID controls the interpreter integer width. 1 1363means 32-bit and this is unusual. 2 or greater is 64-bit. 1364 1365---------------------------------------- 136621 March 2008. Summary of changes for version 20080321: 1367 13681) ACPI CA Core Subsystem: 1369 1370Implemented an additional change to the GPE support in order to suppress 1371spurious or stray GPEs. The AcpiEvDisableGpe function will now permanently 1372disable incoming GPEs that are neither enabled nor disabled -- meaning that 1373the GPE is unknown to the system. This should prevent future interrupt floods 1374from that GPE. BZ 6217 (Zhang Rui) 1375 1376Fixed a problem where NULL package elements were not returned to the 1377AcpiEvaluateObject interface correctly. The element was simply ignored 1378instead of returning a NULL ACPI_OBJECT package element, potentially causing 1379a buffer overflow and/or confusing the caller who expected a fixed number of 1380elements. BZ 10132 (Lin Ming, Bob Moore) 1381 1382Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word, Dword, 1383Qword), Field, BankField, and IndexField operators when invoked from inside 1384an executing control method. In this case, these operators created namespace 1385nodes that were incorrectly left marked as permanent nodes instead of 1386temporary nodes. This could cause a problem if there is race condition 1387between an exiting control method and a running namespace walk. (Reported by 1388Linn Crosetto) 1389 1390Fixed a problem where the CreateField and CreateXXXField operators would 1391incorrectly allow duplicate names (the name of the field) with no exception 1392generated. 1393 1394Implemented several changes for Notify handling. Added support for new Notify 1395values (ACPI 2.0+) and improved the Notify debug output. Notify on 1396PowerResource objects is no longer allowed, as per the ACPI specification. 1397(Bob Moore, Zhang Rui) 1398 1399All Reference Objects returned via the AcpiEvaluateObject interface are now 1400marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved for 1401NULL objects - either NULL package elements or unresolved named references. 1402 1403Fixed a problem where an extraneous debug message was produced for package 1404objects (when debugging enabled). The message "Package List length larger 1405than NumElements count" is now produced in the correct case, and is now an 1406error message rather than a debug message. Added a debug message for the 1407opposite case, where NumElements is larger than the Package List (the package 1408will be padded out with NULL elements as per the ACPI spec.) 1409 1410Implemented several improvements for the output of the ASL "Debug" object to 1411clarify and keep all data for a given object on one output line. 1412 1413Fixed two size calculation issues with the variable-length Start Dependent 1414resource descriptor. 1415 1416Example Code and Data Size: These are the sizes for the OS-independent 1417acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1418debug version of the code includes the debug output trace mechanism and has 1419a much larger code and data size. 1420 1421 Previous Release: 1422 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 1423 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 1424 Current Release: 1425 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 1426 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 1427 14282) iASL Compiler/Disassembler and Tools: 1429 1430Fixed a problem with the use of the Switch operator where execution of the 1431containing method by multiple concurrent threads could cause an 1432AE_ALREADY_EXISTS exception. This is caused by the fact that there is no 1433actual Switch opcode, it must be simulated with local named temporary 1434variables and if/else pairs. The solution chosen was to mark any method that 1435uses Switch as Serialized, thus preventing multiple thread entries. BZ 469. 1436 1437---------------------------------------- 143813 February 2008. Summary of changes for version 20080213: 1439 14401) ACPI CA Core Subsystem: 1441 1442Implemented another MS compatibility design change for GPE/Notify handling. 1443GPEs are now cleared/enabled asynchronously to allow all pending notifies to 1444complete first. It is expected that the OSL will queue the enable request 1445behind all pending notify requests (may require changes to the local host OSL 1446in AcpiOsExecute). Alexey Starikovskiy. 1447 1448Fixed a problem where buffer and package objects passed as arguments to a 1449control method via the external AcpiEvaluateObject interface could cause an 1450AE_AML_INTERNAL exception depending on the order and type of operators 1451executed by the target control method. 1452 1453Fixed a problem where resource descriptor size optimization could cause a 1454problem when a _CRS resource template is passed to a _SRS method. The _SRS 1455resource template must use the same descriptors (with the same size) as 1456returned from _CRS. This change affects the following resource descriptors: 1457IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 9487) 1458 1459Fixed a problem where a CopyObject to RegionField, BankField, and IndexField 1460objects did not perform an implicit conversion as it should. These types must 1461retain their initial type permanently as per the ACPI specification. However, 1462a CopyObject to all other object types should not perform an implicit 1463conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388 1464 1465Fixed a problem with the AcpiGetDevices interface where the mechanism to 1466match device CIDs did not examine the entire list of available CIDs, but 1467instead aborted on the first non-matching CID. Andrew Patterson. 1468 1469Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro was 1470inadvertently changed to return a 16-bit value instead of a 32-bit value, 1471truncating the upper dword of a 64-bit value. This macro is only used to 1472display debug output, so no incorrect calculations were made. Also, 1473reimplemented the macro so that a 64-bit shift is not performed by 1474inefficient compilers. 1475 1476Added missing va_end statements that should correspond with each va_start 1477statement. 1478 1479Example Code and Data Size: These are the sizes for the OS-independent 1480acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1481debug version of the code includes the debug output trace mechanism and has 1482a much larger code and data size. 1483 1484 Previous Release: 1485 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 1486 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 1487 Current Release: 1488 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 1489 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 1490 14912) iASL Compiler/Disassembler and Tools: 1492 1493Implemented full disassembler support for the following new ACPI tables: 1494BERT, EINJ, and ERST. Implemented partial disassembler support for the 1495complicated HEST table. These tables support the Windows Hardware Error 1496Architecture (WHEA). 1497 1498---------------------------------------- 149923 January 2008. Summary of changes for version 20080123: 1500 15011) ACPI CA Core Subsystem: 1502 1503Added the 2008 copyright to all module headers and signons. This affects 1504virtually every file in the ACPICA core subsystem, the iASL compiler, and 1505the tools/utilities. 1506 1507Fixed a problem with the SizeOf operator when used with Package and Buffer 1508objects. These objects have deferred execution for some arguments, and the 1509execution is now completed before the SizeOf is executed. This problem caused 1510unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) BZ 15119558 1512 1513Implemented an enhancement to the interpreter "slack mode". In the absence of 1514an explicit return or an implicitly returned object from the last executed 1515opcode, a control method will now implicitly return an integer of value 0 for 1516Microsoft compatibility. (Lin Ming) BZ 392 1517 1518Fixed a problem with the Load operator where an exception was not returned in 1519the case where the table is already loaded. (Lin Ming) BZ 463 1520 1521Implemented support for the use of DDBHandles as an Indexed Reference, as per 1522the ACPI spec. (Lin Ming) BZ 486 1523 1524Implemented support for UserTerm (Method invocation) for the Unload operator 1525as per the ACPI spec. (Lin Ming) BZ 580 1526 1527Fixed a problem with the LoadTable operator where the OemId and OemTableId 1528input strings could cause unexpected failures if they were shorter than the 1529maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576 1530 1531Implemented support for UserTerm (Method invocation) for the Unload operator 1532as per the ACPI spec. (Lin Ming) BZ 580 1533 1534Implemented header file support for new ACPI tables - BERT, ERST, EINJ, HEST, 1535IBFT, UEFI, WDAT. Disassembler support is forthcoming. 1536 1537Example Code and Data Size: These are the sizes for the OS-independent 1538acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1539debug version of the code includes the debug output trace mechanism and has 1540a much larger code and data size. 1541 1542 Previous Release: 1543 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 1544 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 1545 Current Release: 1546 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 1547 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 1548 15492) iASL Compiler/Disassembler and Tools: 1550 1551Implemented support in the disassembler for checksum validation on incoming 1552binary DSDTs and SSDTs. If incorrect, a message is displayed within the table 1553header dump at the start of the disassembly. 1554 1555Implemented additional debugging information in the namespace listing file 1556created during compilation. In addition to the namespace hierarchy, the full 1557pathname to each namespace object is displayed. 1558 1559Fixed a problem with the disassembler where invalid ACPI tables could cause 1560faults or infinite loops. 1561 1562Fixed an unexpected parse error when using the optional "parameter types" 1563list in a control method declaration. (Lin Ming) BZ 397 1564 1565Fixed a problem where two External declarations with the same name did not 1566cause an error (Lin Ming) BZ 509 1567 1568Implemented support for full TermArgs (adding Argx, Localx and method 1569invocation) for the ParameterData parameter to the LoadTable operator. (Lin 1570Ming) BZ 583,587 1571 1572---------------------------------------- 157319 December 2007. Summary of changes for version 20071219: 1574 15751) ACPI CA Core Subsystem: 1576 1577Implemented full support for deferred execution for the TermArg string 1578arguments for DataTableRegion. This enables forward references and full 1579operand resolution for the three string arguments. Similar to OperationRegion 1580deferred argument execution.) Lin Ming. BZ 430 1581 1582Implemented full argument resolution support for the BankValue argument to 1583BankField. Previously, only constants were supported, now any TermArg may be 1584used. Lin Ming BZ 387, 393 1585 1586Fixed a problem with AcpiGetDevices where the search of a branch of the 1587device tree could be terminated prematurely. In accordance with the ACPI 1588specification, the search down the current branch is terminated if a device 1589is both not present and not functional (instead of just not present.) Yakui 1590Zhao. 1591 1592Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly if 1593the underlying AML code changed the GPE enable registers. Now, any unknown 1594incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately disabled 1595instead of simply ignored. Rui Zhang. 1596 1597Fixed a problem with Index Fields where the Index register was incorrectly 1598limited to a maximum of 32 bits. Now any size may be used. 1599 1600Fixed a couple memory leaks associated with "implicit return" objects when 1601the AML Interpreter slack mode is enabled. Lin Ming BZ 349 1602 1603Example Code and Data Size: These are the sizes for the OS-independent 1604acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1605debug version of the code includes the debug output trace mechanism and has 1606a much larger code and data size. 1607 1608 Previous Release: 1609 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 1610 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 1611 Current Release: 1612 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 1613 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 1614 1615---------------------------------------- 161614 November 2007. Summary of changes for version 20071114: 1617 16181) ACPI CA Core Subsystem: 1619 1620Implemented event counters for each of the Fixed Events, the ACPI SCI 1621(interrupt) itself, and control methods executed. Named 1622AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. These 1623should be useful for debugging and statistics. 1624 1625Implemented a new external interface, AcpiGetStatistics, to retrieve the 1626contents of the various event counters. Returns the current values for 1627AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and 1628AcpiMethodCount. The interface can be expanded in the future if new counters 1629are added. Device drivers should use this interface rather than access the 1630counters directly. 1631 1632Fixed a problem with the FromBCD and ToBCD operators. With some compilers, 1633the ShortDivide function worked incorrectly, causing problems with the BCD 1634functions with large input values. A truncation from 64-bit to 32-bit 1635inadvertently occurred. Internal BZ 435. Lin Ming 1636 1637Fixed a problem with Index references passed as method arguments. References 1638passed as arguments to control methods were dereferenced immediately (before 1639control was passed to the called method). The references are now correctly 1640passed directly to the called method. BZ 5389. Lin Ming 1641 1642Fixed a problem with CopyObject used in conjunction with the Index operator. 1643The reference was incorrectly dereferenced before the copy. The reference is 1644now correctly copied. BZ 5391. Lin Ming 1645 1646Fixed a problem with Control Method references within Package objects. These 1647references are now correctly generated. This completes the package 1648construction overhaul that began in version 20071019. 1649 1650Example Code and Data Size: These are the sizes for the OS-independent 1651acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1652debug version of the code includes the debug output trace mechanism and has 1653a much larger code and data size. 1654 1655 Previous Release: 1656 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 1657 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 1658 Current Release: 1659 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 1660 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 1661 1662 16632) iASL Compiler/Disassembler and Tools: 1664 1665The AcpiExec utility now installs handlers for all of the predefined 1666Operation Region types. New types supported are: PCI_Config, CMOS, and 1667PCIBARTarget. 1668 1669Fixed a problem with the 64-bit version of AcpiExec where the extended (64- 1670bit) address fields for the DSDT and FACS within the FADT were not being 1671used, causing truncation of the upper 32-bits of these addresses. Lin Ming 1672and Bob Moore 1673 1674---------------------------------------- 167519 October 2007. Summary of changes for version 20071019: 1676 16771) ACPI CA Core Subsystem: 1678 1679Fixed a problem with the Alias operator when the target of the alias is a 1680named ASL operator that opens a new scope -- Scope, Device, PowerResource, 1681Processor, and ThermalZone. In these cases, any children of the original 1682operator could not be accessed via the alias, potentially causing unexpected 1683AE_NOT_FOUND exceptions. (BZ 9067) 1684 1685Fixed a problem with the Package operator where all named references were 1686created as object references and left otherwise unresolved. According to the 1687ACPI specification, a Package can only contain Data Objects or references to 1688control methods. The implication is that named references to Data Objects 1689(Integer, Buffer, String, Package, BufferField, Field) should be resolved 1690immediately upon package creation. This is the approach taken with this 1691change. References to all other named objects (Methods, Devices, Scopes, 1692etc.) are all now properly created as reference objects. (BZ 5328) 1693 1694Reverted a change to Notify handling that was introduced in version 169520070508. This version changed the Notify handling from asynchronous to 1696fully synchronous (Device driver Notify handling with respect to the Notify 1697ASL operator). It was found that this change caused more problems than it 1698solved and was removed by most users. 1699 1700Fixed a problem with the Increment and Decrement operators where the type of 1701the target object could be unexpectedly and incorrectly changed. (BZ 353) 1702Lin Ming. 1703 1704Fixed a problem with the Load and LoadTable operators where the table 1705location within the namespace was ignored. Instead, the table was always 1706loaded into the root or current scope. Lin Ming. 1707 1708Fixed a problem with the Load operator when loading a table from a buffer 1709object. The input buffer was prematurely zeroed and/or deleted. (BZ 577) 1710 1711Fixed a problem with the Debug object where a store of a DdbHandle reference 1712object to the Debug object could cause a fault. 1713 1714Added a table checksum verification for the Load operator, in the case where 1715the load is from a buffer. (BZ 578). 1716 1717Implemented additional parameter validation for the LoadTable operator. The 1718length of the input strings SignatureString, OemIdString, and OemTableId are 1719now checked for maximum lengths. (BZ 582) Lin Ming. 1720 1721Example Code and Data Size: These are the sizes for the OS-independent 1722acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1723debug version of the code includes the debug output trace mechanism and has 1724a much larger code and data size. 1725 1726 Previous Release: 1727 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 1728 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 1729 Current Release: 1730 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 1731 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 1732 1733 17342) iASL Compiler/Disassembler: 1735 1736Fixed a problem where if a single file was specified and the file did not 1737exist, no error message was emitted. (Introduced with wildcard support in 1738version 20070917.) 1739 1740---------------------------------------- 174119 September 2007. Summary of changes for version 20070919: 1742 17431) ACPI CA Core Subsystem: 1744 1745Designed and implemented new external interfaces to install and remove 1746handlers for ACPI table-related events. Current events that are defined are 1747LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as 1748they are dynamically loaded and unloaded. See AcpiInstallTableHandler and 1749AcpiRemoveTableHandler. (Lin Ming and Bob Moore) 1750 1751Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag 1752(acpi_serialized option on Linux) could cause some systems to hang during 1753initialization. (Bob Moore) BZ 8171 1754 1755Fixed a problem where objects of certain types (Device, ThermalZone, 1756Processor, PowerResource) can be not found if they are declared and 1757referenced from within the same control method (Lin Ming) BZ 341 1758 1759Example Code and Data Size: These are the sizes for the OS-independent 1760acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1761debug version of the code includes the debug output trace mechanism and has 1762a much larger code and data size. 1763 1764 Previous Release: 1765 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 1766 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 1767 Current Release: 1768 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 1769 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 1770 1771 17722) iASL Compiler/Disassembler: 1773 1774Implemented support to allow multiple files to be compiled/disassembled in a 1775single invocation. This includes command line wildcard support for both the 1776Windows and Unix versions of the compiler. This feature simplifies the 1777disassembly and compilation of multiple ACPI tables in a single directory. 1778 1779---------------------------------------- 178008 May 2007. Summary of changes for version 20070508: 1781 17821) ACPI CA Core Subsystem: 1783 1784Implemented a Microsoft compatibility design change for the handling of the 1785Notify AML operator. Previously, notify handlers were dispatched and 1786executed completely asynchronously in a deferred thread. The new design 1787still executes the notify handlers in a different thread, but the original 1788thread that executed the Notify() now waits at a synchronization point for 1789the notify handler to complete. Some machines depend on a synchronous Notify 1790operator in order to operate correctly. 1791 1792Implemented support to allow Package objects to be passed as method 1793arguments to the external AcpiEvaluateObject interface. Previously, this 1794would return the AE_NOT_IMPLEMENTED exception. This feature had not been 1795implemented since there were no reserved control methods that required it 1796until recently. 1797 1798Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs that 1799contained invalid non-zero values in reserved fields could cause later 1800failures because these fields have meaning in later revisions of the FADT. 1801For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The fields 1802are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.) 1803 1804Fixed a problem where the Global Lock handle was not properly updated if a 1805thread that acquired the Global Lock via executing AML code then attempted 1806to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by Joe 1807Liu. 1808 1809Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list 1810could be corrupted if the interrupt being removed was at the head of the 1811list. Reported by Linn Crosetto. 1812 1813Example Code and Data Size: These are the sizes for the OS-independent 1814acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1815debug version of the code includes the debug output trace mechanism and has 1816a much larger code and data size. 1817 1818 Previous Release: 1819 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 1820 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 1821 Current Release: 1822 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 1823 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 1824 1825---------------------------------------- 182620 March 2007. Summary of changes for version 20070320: 1827 18281) ACPI CA Core Subsystem: 1829 1830Implemented a change to the order of interpretation and evaluation of AML 1831operand objects within the AML interpreter. The interpreter now evaluates 1832operands in the order that they appear in the AML stream (and the 1833corresponding ASL code), instead of in the reverse order (after the entire 1834operand list has been parsed). The previous behavior caused several subtle 1835incompatibilities with the Microsoft AML interpreter as well as being 1836somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov. 1837 1838Implemented a change to the ACPI Global Lock support. All interfaces to the 1839global lock now allow the same thread to acquire the lock multiple times. 1840This affects the AcpiAcquireGlobalLock external interface to the global lock 1841as well as the internal use of the global lock to support AML fields -- a 1842control method that is holding the global lock can now simultaneously access 1843AML fields that require global lock protection. Previously, in both cases, 1844this would have resulted in an AE_ALREADY_ACQUIRED exception. The change to 1845AcpiAcquireGlobalLock is of special interest to drivers for the Embedded 1846Controller. There is no change to the behavior of the AML Acquire operator, 1847as this can already be used to acquire a mutex multiple times by the same 1848thread. BZ 8066. With assistance from Alexey Starikovskiy. 1849 1850Fixed a problem where invalid objects could be referenced in the AML 1851Interpreter after error conditions. During operand evaluation, ensure that 1852the internal "Return Object" field is cleared on error and only valid 1853pointers are stored there. Caused occasional access to deleted objects that 1854resulted in "large reference count" warning messages. Valery Podrezov. 1855 1856Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur on 1857deeply nested control method invocations. BZ 7873, local BZ 487. Valery 1858Podrezov. 1859 1860Fixed an internal problem with the handling of result objects on the 1861interpreter result stack. BZ 7872. Valery Podrezov. 1862 1863Removed obsolete code that handled the case where AML_NAME_OP is the target 1864of a reference (Reference.Opcode). This code was no longer necessary. BZ 18657874. Valery Podrezov. 1866 1867Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This was a 1868remnant from the previously discontinued 16-bit support. 1869 1870Example Code and Data Size: These are the sizes for the OS-independent 1871acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1872debug version of the code includes the debug output trace mechanism and has 1873a much larger code and data size. 1874 1875 Previous Release: 1876 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 1877 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 1878 Current Release: 1879 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 1880 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 1881 1882---------------------------------------- 188326 January 2007. Summary of changes for version 20070126: 1884 18851) ACPI CA Core Subsystem: 1886 1887Added the 2007 copyright to all module headers and signons. This affects 1888virtually every file in the ACPICA core subsystem, the iASL compiler, and 1889the utilities. 1890 1891Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable 1892during a table load. A bad pointer was passed in the case where the DSDT is 1893overridden, causing a fault in this case. 1894 1895Example Code and Data Size: These are the sizes for the OS-independent 1896acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1897debug version of the code includes the debug output trace mechanism and has 1898a much larger code and data size. 1899 1900 Previous Release: 1901 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 1902 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 1903 Current Release: 1904 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 1905 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 1906 1907---------------------------------------- 190815 December 2006. Summary of changes for version 20061215: 1909 19101) ACPI CA Core Subsystem: 1911 1912Support for 16-bit ACPICA has been completely removed since it is no longer 1913necessary and it clutters the code. All 16-bit macros, types, and 1914conditional compiles have been removed, cleaning up and simplifying the code 1915across the entire subsystem. DOS support is no longer needed since the 1916bootable Linux firmware kit is now available. 1917 1918The handler for the Global Lock is now removed during AcpiTerminate to 1919enable a clean subsystem restart, via the implementation of the 1920AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz, 1921HP) 1922 1923Implemented enhancements to the multithreading support within the debugger 1924to enable improved multithreading debugging and evaluation of the subsystem. 1925(Valery Podrezov) 1926 1927Debugger: Enhanced the Statistics/Memory command to emit the total (maximum) 1928memory used during the execution, as well as the maximum memory consumed by 1929each of the various object types. (Valery Podrezov) 1930 1931Example Code and Data Size: These are the sizes for the OS-independent 1932acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1933debug version of the code includes the debug output trace mechanism and has 1934a much larger code and data size. 1935 1936 Previous Release: 1937 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 1938 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 1939 Current Release: 1940 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 1941 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 1942 1943 19442) iASL Compiler/Disassembler and Tools: 1945 1946AcpiExec: Implemented a new option (-m) to display full memory use 1947statistics upon subsystem/program termination. (Valery Podrezov) 1948 1949---------------------------------------- 195009 November 2006. Summary of changes for version 20061109: 1951 19521) ACPI CA Core Subsystem: 1953 1954Optimized the Load ASL operator in the case where the source operand is an 1955operation region. Simply map the operation region memory, instead of 1956performing a bytewise read. (Region must be of type SystemMemory, see 1957below.) 1958 1959Fixed the Load ASL operator for the case where the source operand is a 1960region field. A buffer object is also allowed as the source operand. BZ 480 1961 1962Fixed a problem where the Load ASL operator allowed the source operand to be 1963an operation region of any type. It is now restricted to regions of type 1964SystemMemory, as per the ACPI specification. BZ 481 1965 1966Additional cleanup and optimizations for the new Table Manager code. 1967 1968AcpiEnable will now fail if all of the required ACPI tables are not loaded 1969(FADT, FACS, DSDT). BZ 477 1970 1971Added #pragma pack(8/4) to acobject.h to ensure that the structures in this 1972header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been 1973manually optimized to be aligned and will not work if it is byte-packed. 1974 1975Example Code and Data Size: These are the sizes for the OS-independent 1976acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1977debug version of the code includes the debug output trace mechanism and has 1978a much larger code and data size. 1979 1980 Previous Release: 1981 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 1982 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 1983 Current Release: 1984 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 1985 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 1986 1987 19882) iASL Compiler/Disassembler and Tools: 1989 1990Fixed a problem where the presence of the _OSI predefined control method 1991within complex expressions could cause an internal compiler error. 1992 1993AcpiExec: Implemented full region support for multiple address spaces. 1994SpaceId is now part of the REGION object. BZ 429 1995 1996---------------------------------------- 199711 October 2006. Summary of changes for version 20061011: 1998 19991) ACPI CA Core Subsystem: 2000 2001Completed an AML interpreter performance enhancement for control method 2002execution. Previously a 2-pass parse/execution, control methods are now 2003completely parsed and executed in a single pass. This improves overall 2004interpreter performance by ~25%, reduces code size, and reduces CPU stack 2005use. (Valery Podrezov + interpreter changes in version 20051202 that 2006eliminated namespace loading during the pass one parse.) 2007 2008Implemented _CID support for PCI Root Bridge detection. If the _HID does not 2009match the predefined PCI Root Bridge IDs, the _CID list (if present) is now 2010obtained and also checked for an ID match. 2011 2012Implemented additional support for the PCI _ADR execution: upsearch until a 2013device scope is found before executing _ADR. This allows PCI_Config 2014operation regions to be declared locally within control methods underneath 2015PCI device objects. 2016 2017Fixed a problem with a possible race condition between threads executing 2018AcpiWalkNamespace and the AML interpreter. This condition was removed by 2019modifying AcpiWalkNamespace to (by default) ignore all temporary namespace 2020entries created during any concurrent control method execution. An 2021additional namespace race condition is known to exist between 2022AcpiWalkNamespace and the Load/Unload ASL operators and is still under 2023investigation. 2024 2025Restructured the AML ParseLoop function, breaking it into several 2026subfunctions in order to reduce CPU stack use and improve maintainability. 2027(Mikhail Kouzmich) 2028 2029AcpiGetHandle: Fix for parameter validation to detect invalid combinations 2030of prefix handle and pathname. BZ 478 2031 2032Example Code and Data Size: These are the sizes for the OS-independent 2033acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2034debug version of the code includes the debug output trace mechanism and has 2035a much larger code and data size. 2036 2037 Previous Release: 2038 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 2039 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 2040 Current Release: 2041 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 2042 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 2043 20442) iASL Compiler/Disassembler and Tools: 2045 2046Ported the -g option (get local ACPI tables) to the new ACPICA Table Manager 2047to restore original behavior. 2048 2049---------------------------------------- 205027 September 2006. Summary of changes for version 20060927: 2051 20521) ACPI CA Core Subsystem: 2053 2054Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister. 2055These functions now use a spinlock for mutual exclusion and the interrupt 2056level indication flag is not needed. 2057 2058Fixed a problem with the Global Lock where the lock could appear to be 2059obtained before it is actually obtained. The global lock semaphore was 2060inadvertently created with one unit instead of zero units. (BZ 464) Fiodor 2061Suietov. 2062 2063Fixed a possible memory leak and fault in AcpiExResolveObjectToValue during 2064a read from a buffer or region field. (BZ 458) Fiodor Suietov. 2065 2066Example Code and Data Size: These are the sizes for the OS-independent 2067acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2068debug version of the code includes the debug output trace mechanism and has 2069a much larger code and data size. 2070 2071 Previous Release: 2072 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 2073 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 2074 Current Release: 2075 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 2076 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 2077 2078 20792) iASL Compiler/Disassembler and Tools: 2080 2081Fixed a compilation problem with the pre-defined Resource Descriptor field 2082names where an "object does not exist" error could be incorrectly generated 2083if the parent ResourceTemplate pathname places the template within a 2084different namespace scope than the current scope. (BZ 7212) 2085 2086Fixed a problem where the compiler could hang after syntax errors detected 2087in an ElseIf construct. (BZ 453) 2088 2089Fixed a problem with the AmlFilename parameter to the DefinitionBlock() 2090operator. An incorrect output filename was produced when this parameter was 2091a null string (""). Now, the original input filename is used as the AML 2092output filename, with an ".aml" extension. 2093 2094Implemented a generic batch command mode for the AcpiExec utility (execute 2095any AML debugger command) (Valery Podrezov). 2096 2097---------------------------------------- 209812 September 2006. Summary of changes for version 20060912: 2099 21001) ACPI CA Core Subsystem: 2101 2102Enhanced the implementation of the "serialized mode" of the interpreter 2103(enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is 2104specified, instead of creating a serialization semaphore per control method, 2105the interpreter lock is simply no longer released before a blocking 2106operation during control method execution. This effectively makes the AML 2107Interpreter single-threaded. The overhead of a semaphore per-method is 2108eliminated. 2109 2110Fixed a regression where an error was no longer emitted if a control method 2111attempts to create 2 objects of the same name. This once again returns 2112AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism that 2113will dynamically serialize the control method to possible prevent future 2114errors. (BZ 440) 2115 2116Integrated a fix for a problem with PCI Express HID detection in the PCI 2117Config Space setup procedure. (BZ 7145) 2118 2119Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the 2120AcpiHwInitialize function - the FADT registers are now validated when the 2121table is loaded. 2122 2123Added two new warnings during FADT verification - 1) if the FADT is larger 2124than the largest known FADT version, and 2) if there is a mismatch between a 212532-bit block address and the 64-bit X counterpart (when both are non-zero.) 2126 2127Example Code and Data Size: These are the sizes for the OS-independent 2128acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2129debug version of the code includes the debug output trace mechanism and has 2130a much larger code and data size. 2131 2132 Previous Release: 2133 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 2134 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 2135 Current Release: 2136 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 2137 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 2138 2139 21402) iASL Compiler/Disassembler and Tools: 2141 2142Fixed a problem with the implementation of the Switch() operator where the 2143temporary variable was declared too close to the actual Switch, instead of 2144at method level. This could cause a problem if the Switch() operator is 2145within a while loop, causing an error on the second iteration. (BZ 460) 2146 2147Disassembler - fix for error emitted for unknown type for target of scope 2148operator. Now, ignore it and continue. 2149 2150Disassembly of an FADT now verifies the input FADT and reports any errors 2151found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs. 2152 2153Disassembly of raw data buffers with byte initialization data now prefixes 2154each output line with the current buffer offset. 2155 2156Disassembly of ASF! table now includes all variable-length data fields at 2157the end of some of the subtables. 2158 2159The disassembler now emits a comment if a buffer appears to be a 2160ResourceTemplate, but cannot be disassembled as such because the EndTag does 2161not appear at the very end of the buffer. 2162 2163AcpiExec - Added the "-t" command line option to enable the serialized mode 2164of the AML interpreter. 2165 2166---------------------------------------- 216731 August 2006. Summary of changes for version 20060831: 2168 21691) ACPI CA Core Subsystem: 2170 2171Miscellaneous fixes for the Table Manager: 2172- Correctly initialize internal common FADT for all 64-bit "X" fields 2173- Fixed a couple table mapping issues during table load 2174- Fixed a couple alignment issues for IA64 2175- Initialize input array to zero in AcpiInitializeTables 2176- Additional parameter validation for AcpiGetTable, AcpiGetTableHeader, 2177AcpiGetTableByIndex 2178 2179Change for GPE support: when a "wake" GPE is received, all wake GPEs are now 2180immediately disabled to prevent the waking GPE from firing again and to 2181prevent other wake GPEs from interrupting the wake process. 2182 2183Added the AcpiGpeCount global that tracks the number of processed GPEs, to 2184be used for debugging systems with a large number of ACPI interrupts. 2185 2186Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in 2187both the ACPICA headers and the disassembler. 2188 2189Example Code and Data Size: These are the sizes for the OS-independent 2190acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2191debug version of the code includes the debug output trace mechanism and has 2192a much larger code and data size. 2193 2194 Previous Release: 2195 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 2196 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 2197 Current Release: 2198 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 2199 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 2200 2201 22022) iASL Compiler/Disassembler and Tools: 2203 2204Disassembler support for the DMAR ACPI table. 2205 2206---------------------------------------- 220723 August 2006. Summary of changes for version 20060823: 2208 22091) ACPI CA Core Subsystem: 2210 2211The Table Manager component has been completely redesigned and 2212reimplemented. The new design is much simpler, and reduces the overall code 2213and data size of the kernel-resident ACPICA by approximately 5%. Also, it is 2214now possible to obtain the ACPI tables very early during kernel 2215initialization, even before dynamic memory management is initialized. 2216(Alexey Starikovskiy, Fiodor Suietov, Bob Moore) 2217 2218Obsolete ACPICA interfaces: 2219 2220- AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel init 2221time). 2222- AcpiLoadTable: Not needed. 2223- AcpiUnloadTable: Not needed. 2224 2225New ACPICA interfaces: 2226 2227- AcpiInitializeTables: Must be called before the table manager can be used. 2228- AcpiReallocateRootTable: Used to transfer the root table to dynamically 2229allocated memory after it becomes available. 2230- AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI tables 2231in the RSDT/XSDT. 2232 2233Other ACPICA changes: 2234 2235- AcpiGetTableHeader returns the actual mapped table header, not a copy. Use 2236AcpiOsUnmapMemory to free this mapping. 2237- AcpiGetTable returns the actual mapped table. The mapping is managed 2238internally and must not be deleted by the caller. Use of this interface 2239causes no additional dynamic memory allocation. 2240- AcpiFindRootPointer: Support for physical addressing has been eliminated, 2241it appeared to be unused. 2242- The interface to AcpiOsMapMemory has changed to be consistent with the 2243other allocation interfaces. 2244- The interface to AcpiOsGetRootPointer has changed to eliminate unnecessary 2245parameters. 2246- ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 64- 2247bit platforms. Was previously 64 bits on all platforms. 2248- The interface to the ACPI Global Lock acquire/release macros have changed 2249slightly since ACPICA no longer keeps a local copy of the FACS with a 2250constructed pointer to the actual global lock. 2251 2252Porting to the new table manager: 2253 2254- AcpiInitializeTables: Must be called once, and can be called anytime 2255during the OS initialization process. It allows the host to specify an area 2256of memory to be used to store the internal version of the RSDT/XSDT (root 2257table). This allows the host to access ACPI tables before memory management 2258is initialized and running. 2259- AcpiReallocateRootTable: Can be called after memory management is running 2260to copy the root table to a dynamically allocated array, freeing up the 2261scratch memory specified in the call to AcpiInitializeTables. 2262- AcpiSubsystemInitialize: This existing interface is independent of the 2263Table Manager, and does not have to be called before the Table Manager can 2264be used, it only must be called before the rest of ACPICA can be used. 2265- ACPI Tables: Some changes have been made to the names and structure of the 2266actbl.h and actbl1.h header files and may require changes to existing code. 2267For example, bitfields have been completely removed because of their lack of 2268portability across C compilers. 2269- Update interfaces to the Global Lock acquire/release macros if local 2270versions are used. (see acwin.h) 2271 2272Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c 2273 2274New files: tbfind.c 2275 2276Example Code and Data Size: These are the sizes for the OS-independent 2277acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2278debug version of the code includes the debug output trace mechanism and has 2279a much larger code and data size. 2280 2281 Previous Release: 2282 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 2283 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 2284 Current Release: 2285 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 2286 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 2287 2288 22892) iASL Compiler/Disassembler and Tools: 2290 2291No changes for this release. 2292 2293---------------------------------------- 229421 July 2006. Summary of changes for version 20060721: 2295 22961) ACPI CA Core Subsystem: 2297 2298The full source code for the ASL test suite used to validate the iASL 2299compiler and the ACPICA core subsystem is being released with the ACPICA 2300source for the first time. The source is contained in a separate package and 2301consists of over 1100 files that exercise all ASL/AML operators. The package 2302should appear on the Intel/ACPI web site shortly. (Valery Podrezov, Fiodor 2303Suietov) 2304 2305Completed a new design and implementation for support of the ACPI Global 2306Lock. On the OS side, the global lock is now treated as a standard AML 2307mutex. Previously, multiple OS threads could "acquire" the global lock 2308simultaneously. However, this could cause the BIOS to be starved out of the 2309lock - especially in cases such as the Embedded Controller driver where 2310there is a tight coupling between the OS and the BIOS. 2311 2312Implemented an optimization for the ACPI Global Lock interrupt mechanism. 2313The Global Lock interrupt handler no longer queues the execution of a 2314separate thread to signal the global lock semaphore. Instead, the semaphore 2315is signaled directly from the interrupt handler. 2316 2317Implemented support within the AML interpreter for package objects that 2318contain a larger AML length (package list length) than the package element 2319count. In this case, the length of the package is truncated to match the 2320package element count. Some BIOS code apparently modifies the package length 2321on the fly, and this change supports this behavior. Provides compatibility 2322with the MS AML interpreter. (With assistance from Fiodor Suietov) 2323 2324Implemented a temporary fix for the BankValue parameter of a Bank Field to 2325support all constant values, now including the Zero and One opcodes. 2326Evaluation of this parameter must eventually be converted to a full TermArg 2327evaluation. A not-implemented error is now returned (temporarily) for non- 2328constant values for this parameter. 2329 2330Fixed problem reports (Fiodor Suietov) integrated: 2331- Fix for premature object deletion after CopyObject on Operation Region (BZ 2332350) 2333 2334Example Code and Data Size: These are the sizes for the OS-independent 2335acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2336debug version of the code includes the debug output trace mechanism and has 2337a much larger code and data size. 2338 2339 Previous Release: 2340 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total 2341 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total 2342 Current Release: 2343 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 2344 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 2345 2346 23472) iASL Compiler/Disassembler and Tools: 2348 2349No changes for this release. 2350 2351---------------------------------------- 235207 July 2006. Summary of changes for version 20060707: 2353 23541) ACPI CA Core Subsystem: 2355 2356Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers 2357that do not allow the initialization of address pointers within packed 2358structures - even though the hardware itself may support misaligned 2359transfers. Some of the debug data structures are packed by default to 2360minimize size. 2361 2362Added an error message for the case where AcpiOsGetThreadId() returns zero. 2363A non-zero value is required by the core ACPICA code to ensure the proper 2364operation of AML mutexes and recursive control methods. 2365 2366The DSDT is now the only ACPI table that determines whether the AML 2367interpreter is in 32-bit or 64-bit mode. Not really a functional change, but 2368the hooks for per-table 32/64 switching have been removed from the code. A 2369clarification to the ACPI specification is forthcoming in ACPI 3.0B. 2370 2371Fixed a possible leak of an OwnerID in the error path of 2372AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID 2373deletion to a single place in AcpiTbUninstallTable to correct possible leaks 2374when using the AcpiTbDeleteTablesByType interface (with assistance from 2375Lance Ortiz.) 2376 2377Fixed a problem with Serialized control methods where the semaphore 2378associated with the method could be over-signaled after multiple method 2379invocations. 2380 2381Fixed two issues with the locking of the internal namespace data structure. 2382Both the Unload() operator and AcpiUnloadTable interface now lock the 2383namespace during the namespace deletion associated with the table unload 2384(with assistance from Linn Crosetto.) 2385 2386Fixed problem reports (Valery Podrezov) integrated: 2387- Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426) 2388 2389Fixed problem reports (Fiodor Suietov) integrated: 2390- Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369) 2391- On Address Space handler deletion, needless deactivation call (BZ 374) 2392- AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 375) 2393- Possible memory leak, Notify sub-objects of Processor, Power, ThermalZone 2394(BZ 376) 2395- AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378) 2396- Minimum Length of RSDT should be validated (BZ 379) 2397- AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no 2398Handler (BZ (380) 2399- AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type loaded 2400(BZ 381) 2401 2402Example Code and Data Size: These are the sizes for the OS-independent 2403acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2404debug version of the code includes the debug output trace mechanism and has 2405a much larger code and data size. 2406 2407 Previous Release: 2408 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 2409 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 2410 Current Release: 2411 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 2412 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 2413 2414 24152) iASL Compiler/Disassembler and Tools: 2416 2417Fixed problem reports: 2418Compiler segfault when ASL contains a long (>1024) String declaration (BZ 2419436) 2420 2421---------------------------------------- 242223 June 2006. Summary of changes for version 20060623: 2423 24241) ACPI CA Core Subsystem: 2425 2426Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This 2427allows the type to be customized to the host OS for improved efficiency 2428(since a spinlock is usually a very small object.) 2429 2430Implemented support for "ignored" bits in the ACPI registers. According to 2431the ACPI specification, these bits should be preserved when writing the 2432registers via a read/modify/write cycle. There are 3 bits preserved in this 2433manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11]. 2434 2435Implemented the initial deployment of new OSL mutex interfaces. Since some 2436host operating systems have separate mutex and semaphore objects, this 2437feature was requested. The base code now uses mutexes (and the new mutex 2438interfaces) wherever a binary semaphore was used previously. However, for 2439the current release, the mutex interfaces are defined as macros to map them 2440to the existing semaphore interfaces. Therefore, no OSL changes are required 2441at this time. (See acpiosxf.h) 2442 2443Fixed several problems with the support for the control method SyncLevel 2444parameter. The SyncLevel now works according to the ACPI specification and 2445in concert with the Mutex SyncLevel parameter, since the current SyncLevel 2446is a property of the executing thread. Mutual exclusion for control methods 2447is now implemented with a mutex instead of a semaphore. 2448 2449Fixed three instances of the use of the C shift operator in the bitfield 2450support code (exfldio.c) to avoid the use of a shift value larger than the 2451target data width. The behavior of C compilers is undefined in this case and 2452can cause unpredictable results, and therefore the case must be detected and 2453avoided. (Fiodor Suietov) 2454 2455Added an info message whenever an SSDT or OEM table is loaded dynamically 2456via the Load() or LoadTable() ASL operators. This should improve debugging 2457capability since it will show exactly what tables have been loaded (beyond 2458the tables present in the RSDT/XSDT.) 2459 2460Example Code and Data Size: These are the sizes for the OS-independent 2461acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2462debug version of the code includes the debug output trace mechanism and has 2463a much larger code and data size. 2464 2465 Previous Release: 2466 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 2467 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 2468 Current Release: 2469 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 2470 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 2471 2472 24732) iASL Compiler/Disassembler and Tools: 2474 2475No changes for this release. 2476 2477---------------------------------------- 247808 June 2006. Summary of changes for version 20060608: 2479 24801) ACPI CA Core Subsystem: 2481 2482Converted the locking mutex used for the ACPI hardware to a spinlock. This 2483change should eliminate all problems caused by attempting to acquire a 2484semaphore at interrupt level, and it means that all ACPICA external 2485interfaces that directly access the ACPI hardware can be safely called from 2486interrupt level. OSL code that implements the semaphore interfaces should be 2487able to eliminate any workarounds for being called at interrupt level. 2488 2489Fixed a regression introduced in 20060526 where the ACPI device 2490initialization could be prematurely aborted with an AE_NOT_FOUND if a device 2491did not have an optional _INI method. 2492 2493Fixed an IndexField issue where a write to the Data Register should be 2494limited in size to the AccessSize (width) of the IndexField itself. (BZ 433, 2495Fiodor Suietov) 2496 2497Fixed problem reports (Valery Podrezov) integrated: 2498- Allow store of ThermalZone objects to Debug object (BZ 5369/5370) 2499 2500Fixed problem reports (Fiodor Suietov) integrated: 2501- AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364) 2502 2503Removed four global mutexes that were obsolete and were no longer being 2504used. 2505 2506Example Code and Data Size: These are the sizes for the OS-independent 2507acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2508debug version of the code includes the debug output trace mechanism and has 2509a much larger code and data size. 2510 2511 Previous Release: 2512 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 2513 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 2514 Current Release: 2515 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 2516 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 2517 2518 25192) iASL Compiler/Disassembler and Tools: 2520 2521Fixed a fault when using -g option (get tables from registry) on Windows 2522machines. 2523 2524Fixed problem reports integrated: 2525- Generate error if CreateField NumBits parameter is zero. (BZ 405) 2526- Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor 2527Suietov) 2528- Global table revision override (-r) is ignored (BZ 413) 2529 2530---------------------------------------- 253126 May 2006. Summary of changes for version 20060526: 2532 25331) ACPI CA Core Subsystem: 2534 2535Restructured, flattened, and simplified the internal interfaces for 2536namespace object evaluation - resulting in smaller code, less CPU stack use, 2537and fewer interfaces. (With assistance from Mikhail Kouzmich) 2538 2539Fixed a problem with the CopyObject operator where the first parameter was 2540not typed correctly for the parser, interpreter, compiler, and disassembler. 2541Caused various errors and unexpected behavior. 2542 2543Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits 2544produced incorrect results with some C compilers. Since the behavior of C 2545compilers when the shift value is larger than the datatype width is 2546apparently not well defined, the interpreter now detects this condition and 2547simply returns zero as expected in all such cases. (BZ 395) 2548 2549Fixed problem reports (Valery Podrezov) integrated: 2550- Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329) 2551- Allow interpreter to handle nested method declarations (BZ 5361) 2552 2553Fixed problem reports (Fiodor Suietov) integrated: 2554- AcpiTerminate doesn't free debug memory allocation list objects (BZ 355) 2555- After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 356) 2556- AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357) 2557- Resource Manager should return AE_TYPE for non-device objects (BZ 358) 2558- Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359) 2559- Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360) 2560- Incomplete cleanup branch in AcpiPsParseAml (BZ 361) 2561- Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362) 2562- AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ 365) 2563- Status of the Global Initialization Handler call not used (BZ 366) 2564- Incorrect object parameter to Global Initialization Handler (BZ 367) 2565 2566Example Code and Data Size: These are the sizes for the OS-independent 2567acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2568debug version of the code includes the debug output trace mechanism and has 2569a much larger code and data size. 2570 2571 Previous Release: 2572 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 2573 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 2574 Current Release: 2575 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 2576 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 2577 2578 25792) iASL Compiler/Disassembler and Tools: 2580 2581Modified the parser to allow the names IO, DMA, and IRQ to be used as 2582namespace identifiers with no collision with existing resource descriptor 2583macro names. This provides compatibility with other ASL compilers and is 2584most useful for disassembly/recompilation of existing tables without parse 2585errors. (With assistance from Thomas Renninger) 2586 2587Disassembler: fixed an incorrect disassembly problem with the 2588DataTableRegion and CopyObject operators. Fixed a possible fault during 2589disassembly of some Alias operators. 2590 2591---------------------------------------- 259212 May 2006. Summary of changes for version 20060512: 2593 25941) ACPI CA Core Subsystem: 2595 2596Replaced the AcpiOsQueueForExecution interface with a new interface named 2597AcpiOsExecute. The major difference is that the new interface does not have 2598a Priority parameter, this appeared to be useless and has been replaced by a 2599Type parameter. The Type tells the host what type of execution is being 2600requested, such as global lock handler, notify handler, GPE handler, etc. 2601This allows the host to queue and execute the request as appropriate for the 2602request type, possibly using different work queues and different priorities 2603for the various request types. This enables fixes for multithreading 2604deadlock problems such as BZ #5534, and will require changes to all existing 2605OS interface layers. (Alexey Starikovskiy and Bob Moore) 2606 2607Fixed a possible memory leak associated with the support for the so-called 2608"implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor 2609Suietov) 2610 2611Fixed a problem with the Load() operator where a table load from an 2612operation region could overwrite an internal table buffer by up to 7 bytes 2613and cause alignment faults on IPF systems. (With assistance from Luming Yu) 2614 2615Example Code and Data Size: These are the sizes for the OS-independent 2616acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2617debug version of the code includes the debug output trace mechanism and has 2618a much larger code and data size. 2619 2620 Previous Release: 2621 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 2622 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 2623 Current Release: 2624 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 2625 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 2626 2627 2628 26292) iASL Compiler/Disassembler and Tools: 2630 2631Disassembler: Implemented support to cross reference the internal namespace 2632and automatically generate ASL External() statements for symbols not defined 2633within the current table being disassembled. This will simplify the 2634disassembly and recompilation of interdependent tables such as SSDTs since 2635these statements will no longer have to be added manually. 2636 2637Disassembler: Implemented experimental support to automatically detect 2638invocations of external control methods and generate appropriate External() 2639statements. This is problematic because the AML cannot be correctly parsed 2640until the number of arguments for each control method is known. Currently, 2641standalone method invocations and invocations as the source operand of a 2642Store() statement are supported. 2643 2644Disassembler: Implemented support for the ASL pseudo-operators LNotEqual, 2645LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()), 2646LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code 2647more readable and likely closer to the original ASL source. 2648 2649---------------------------------------- 265021 April 2006. Summary of changes for version 20060421: 2651 26521) ACPI CA Core Subsystem: 2653 2654Removed a device initialization optimization introduced in 20051216 where 2655the _STA method was not run unless an _INI was also present for the same 2656device. This optimization could cause problems because it could allow _INI 2657methods to be run within a not-present device subtree. (If a not-present 2658device had no _INI, _STA would not be run, the not-present status would not 2659be discovered, and the children of the device would be incorrectly 2660traversed.) 2661 2662Implemented a new _STA optimization where namespace subtrees that do not 2663contain _INI are identified and ignored during device initialization. 2664Selectively running _STA can significantly improve boot time on large 2665machines (with assistance from Len Brown.) 2666 2667Implemented support for the device initialization case where the returned 2668_STA flags indicate a device not-present but functioning. In this case, _INI 2669is not run, but the device children are examined for presence, as per the 2670ACPI specification. 2671 2672Implemented an additional change to the IndexField support in order to 2673conform to MS behavior. The value written to the Index Register is not 2674simply a byte offset, it is a byte offset in units of the access width of 2675the parent Index Field. (Fiodor Suietov) 2676 2677Defined and deployed a new OSL interface, AcpiOsValidateAddress. This 2678interface is called during the creation of all AML operation regions, and 2679allows the host OS to exert control over what addresses it will allow the 2680AML code to access. Operation Regions whose addresses are disallowed will 2681cause a runtime exception when they are actually accessed (will not affect 2682or abort table loading.) See oswinxf or osunixxf for an example 2683implementation. 2684 2685Defined and deployed a new OSL interface, AcpiOsValidateInterface. This 2686interface allows the host OS to match the various "optional" 2687interface/behavior strings for the _OSI predefined control method as 2688appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf 2689for an example implementation. 2690 2691Restructured and corrected various problems in the exception handling code 2692paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod 2693(with assistance from Takayoshi Kochi.) 2694 2695Modified the Linux source converter to ignore quoted string literals while 2696converting identifiers from mixed to lower case. This will correct problems 2697with the disassembler and other areas where such strings must not be 2698modified. 2699 2700The ACPI_FUNCTION_* macros no longer require quotes around the function 2701name. This allows the Linux source converter to convert the names, now that 2702the converter ignores quoted strings. 2703 2704Example Code and Data Size: These are the sizes for the OS-independent 2705acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2706debug version of the code includes the debug output trace mechanism and has 2707a much larger code and data size. 2708 2709 Previous Release: 2710 2711 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 2712 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 2713 Current Release: 2714 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 2715 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 2716 2717 27182) iASL Compiler/Disassembler and Tools: 2719 2720Implemented 3 new warnings for iASL, and implemented multiple warning levels 2721(w2 flag). 2722 27231) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is not 2724WAIT_FOREVER (0xFFFF) and the code does not examine the return value to 2725check for the possible timeout, a warning is issued. 2726 27272) Useless operators: If an ASL operator does not specify an optional target 2728operand and it also does not use the function return value from the 2729operator, a warning is issued since the operator effectively does nothing. 2730 27313) Unreferenced objects: If a namespace object is created, but never 2732referenced, a warning is issued. This is a warning level 2 since there are 2733cases where this is ok, such as when a secondary table is loaded that uses 2734the unreferenced objects. Even so, care is taken to only flag objects that 2735don't look like they will ever be used. For example, the reserved methods 2736(starting with an underscore) are usually not referenced because it is 2737expected that the OS will invoke them. 2738 2739---------------------------------------- 274031 March 2006. Summary of changes for version 20060331: 2741 27421) ACPI CA Core Subsystem: 2743 2744Implemented header file support for the following additional ACPI tables: 2745ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this support, 2746all current and known ACPI tables are now defined in the ACPICA headers and 2747are available for use by device drivers and other software. 2748 2749Implemented support to allow tables that contain ACPI names with invalid 2750characters to be loaded. Previously, this would cause the table load to 2751fail, but since there are several known cases of such tables on existing 2752machines, this change was made to enable ACPI support for them. Also, this 2753matches the behavior of the Microsoft ACPI implementation. 2754 2755Fixed a couple regressions introduced during the memory optimization in the 275620060317 release. The namespace node definition required additional 2757reorganization and an internal datatype that had been changed to 8-bit was 2758restored to 32-bit. (Valery Podrezov) 2759 2760Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState 2761could be passed through to AcpiOsReleaseObject which is unexpected. Such 2762null pointers are now trapped and ignored, matching the behavior of the 2763previous implementation before the deployment of AcpiOsReleaseObject. 2764(Valery Podrezov, Fiodor Suietov) 2765 2766Fixed a memory mapping leak during the deletion of a SystemMemory operation 2767region where a cached memory mapping was not deleted. This became a 2768noticeable problem for operation regions that are defined within frequently 2769used control methods. (Dana Meyers) 2770 2771Reorganized the ACPI table header files into two main files: one for the 2772ACPI tables consumed by the ACPICA core, and another for the miscellaneous 2773ACPI tables that are consumed by the drivers and other software. The various 2774FADT definitions were merged into one common section and three different 2775tables (ACPI 1.0, 1.0+, and 2.0) 2776 2777Example Code and Data Size: These are the sizes for the OS-independent 2778acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2779debug version of the code includes the debug output trace mechanism and has 2780a much larger code and data size. 2781 2782 Previous Release: 2783 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 2784 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 2785 Current Release: 2786 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 2787 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 2788 2789 27902) iASL Compiler/Disassembler and Tools: 2791 2792Disassembler: Implemented support to decode and format all non-AML ACPI 2793tables (tables other than DSDTs and SSDTs.) This includes the new tables 2794added to the ACPICA headers, therefore all current and known ACPI tables are 2795supported. 2796 2797Disassembler: The change to allow ACPI names with invalid characters also 2798enables the disassembly of such tables. Invalid characters within names are 2799changed to '*' to make the name printable; the iASL compiler will still 2800generate an error for such names, however, since this is an invalid ACPI 2801character. 2802 2803Implemented an option for AcpiXtract (-a) to extract all tables found in the 2804input file. The default invocation extracts only the DSDTs and SSDTs. 2805 2806Fixed a couple of gcc generation issues for iASL and AcpiExec and added a 2807makefile for the AcpiXtract utility. 2808 2809---------------------------------------- 281017 March 2006. Summary of changes for version 20060317: 2811 28121) ACPI CA Core Subsystem: 2813 2814Implemented the use of a cache object for all internal namespace nodes. 2815Since there are about 1000 static nodes in a typical system, this will 2816decrease memory use for cache implementations that minimize per-allocation 2817overhead (such as a slab allocator.) 2818 2819Removed the reference count mechanism for internal namespace nodes, since it 2820was deemed unnecessary. This reduces the size of each namespace node by 2821about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit case, 2822and 32 bytes for the 64-bit case. 2823 2824Optimized several internal data structures to reduce object size on 64-bit 2825platforms by packing data within the 64-bit alignment. This includes the 2826frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static 2827instances corresponding to the namespace objects. 2828 2829Added two new strings for the predefined _OSI method: "Windows 2001.1 SP1" 2830and "Windows 2006". 2831 2832Split the allocation tracking mechanism out to a separate file, from 2833utalloc.c to uttrack.c. This mechanism appears to be only useful for 2834application-level code. Kernels may wish to not include uttrack.c in 2835distributions. 2836 2837Removed all remnants of the obsolete ACPI_REPORT_* macros and the associated 2838code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING 2839macros.) 2840 2841Code and Data Size: These are the sizes for the acpica.lib produced by the 2842Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 2843driver or OSPM code. The debug version of the code includes the debug output 2844trace mechanism and has a much larger code and data size. Note that these 2845values will vary depending on the efficiency of the compiler and the 2846compiler options used during generation. 2847 2848 Previous Release: 2849 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 2850 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 2851 Current Release: 2852 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 2853 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 2854 2855 28562) iASL Compiler/Disassembler and Tools: 2857 2858Implemented an ANSI C version of the acpixtract utility. This version will 2859automatically extract the DSDT and all SSDTs from the input acpidump text 2860file and dump the binary output to separate files. It can also display a 2861summary of the input file including the headers for each table found and 2862will extract any single ACPI table, with any signature. (See 2863source/tools/acpixtract) 2864 2865---------------------------------------- 286610 March 2006. Summary of changes for version 20060310: 2867 28681) ACPI CA Core Subsystem: 2869 2870Tagged all external interfaces to the subsystem with the new 2871ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to assist 2872kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL 2873macro. The default definition is NULL. 2874 2875Added the ACPI_THREAD_ID type for the return value from AcpiOsGetThreadId. 2876This allows the host to define this as necessary to simplify kernel 2877integration. The default definition is ACPI_NATIVE_UINT. 2878 2879Fixed two interpreter problems related to error processing, the deletion of 2880objects, and placing invalid pointers onto the internal operator result 2881stack. BZ 6028, 6151 (Valery Podrezov) 2882 2883Increased the reference count threshold where a warning is emitted for large 2884reference counts in order to eliminate unnecessary warnings on systems with 2885large namespaces (especially 64-bit.) Increased the value from 0x400 to 28860x800. 2887 2888Due to universal disagreement as to the meaning of the 'c' in the calloc() 2889function, the ACPI_MEM_CALLOCATE macro has been renamed to 2890ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'. 2891ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and 2892ACPI_FREE. 2893 2894Code and Data Size: These are the sizes for the acpica.lib produced by the 2895Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 2896driver or OSPM code. The debug version of the code includes the debug output 2897trace mechanism and has a much larger code and data size. Note that these 2898values will vary depending on the efficiency of the compiler and the 2899compiler options used during generation. 2900 2901 Previous Release: 2902 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 2903 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 2904 Current Release: 2905 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 2906 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 2907 2908 29092) iASL Compiler/Disassembler: 2910 2911Disassembler: implemented support for symbolic resource descriptor 2912references. If a CreateXxxxField operator references a fixed offset within a 2913resource descriptor, a name is assigned to the descriptor and the offset is 2914translated to the appropriate resource tag and pathname. The addition of 2915this support brings the disassembled code very close to the original ASL 2916source code and helps eliminate run-time errors when the disassembled code 2917is modified (and recompiled) in such a way as to invalidate the original 2918fixed offsets. 2919 2920Implemented support for a Descriptor Name as the last parameter to the ASL 2921Register() macro. This parameter was inadvertently left out of the ACPI 2922specification, and will be added for ACPI 3.0b. 2923 2924Fixed a problem where the use of the "_OSI" string (versus the full path 2925"\_OSI") caused an internal compiler error. ("No back ptr to op") 2926 2927Fixed a problem with the error message that occurs when an invalid string is 2928used for a _HID object (such as one with an embedded asterisk: "*PNP010A".) 2929The correct message is now displayed. 2930 2931---------------------------------------- 293217 February 2006. Summary of changes for version 20060217: 2933 29341) ACPI CA Core Subsystem: 2935 2936Implemented a change to the IndexField support to match the behavior of the 2937Microsoft AML interpreter. The value written to the Index register is now a 2938byte offset, no longer an index based upon the width of the Data register. 2939This should fix IndexField problems seen on some machines where the Data 2940register is not exactly one byte wide. The ACPI specification will be 2941clarified on this point. 2942 2943Fixed a problem where several resource descriptor types could overrun the 2944internal descriptor buffer due to size miscalculation: VendorShort, 2945VendorLong, and Interrupt. This was noticed on IA64 machines, but could 2946affect all platforms. 2947 2948Fixed a problem where individual resource descriptors were misaligned within 2949the internal buffer, causing alignment faults on IA64 platforms. 2950 2951Code and Data Size: These are the sizes for the acpica.lib produced by the 2952Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 2953driver or OSPM code. The debug version of the code includes the debug output 2954trace mechanism and has a much larger code and data size. Note that these 2955values will vary depending on the efficiency of the compiler and the 2956compiler options used during generation. 2957 2958 Previous Release: 2959 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 2960 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 2961 Current Release: 2962 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 2963 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 2964 2965 29662) iASL Compiler/Disassembler: 2967 2968Implemented support for new reserved names: _WDG and _WED are Microsoft 2969extensions for Windows Instrumentation Management, _TDL is a new ACPI- 2970defined method (Throttling Depth Limit.) 2971 2972Fixed a problem where a zero-length VendorShort or VendorLong resource 2973descriptor was incorrectly emitted as a descriptor of length one. 2974 2975---------------------------------------- 297610 February 2006. Summary of changes for version 20060210: 2977 29781) ACPI CA Core Subsystem: 2979 2980Removed a couple of extraneous ACPI_ERROR messages that appeared during 2981normal execution. These became apparent after the conversion from 2982ACPI_DEBUG_PRINT. 2983 2984Fixed a problem where the CreateField operator could hang if the BitIndex or 2985NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359) 2986 2987Fixed a problem where a DeRefOf operation on a buffer object incorrectly 2988failed with an exception. This also fixes a couple of related RefOf and 2989DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387) 2990 2991Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead of 2992AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, BZ 29935480) 2994 2995Implemented a memory cleanup at the end of the execution of each iteration 2996of an AML While() loop, preventing the accumulation of outstanding objects. 2997(Valery Podrezov, BZ 5427) 2998 2999Eliminated a chunk of duplicate code in the object resolution code. (Valery 3000Podrezov, BZ 5336) 3001 3002Fixed several warnings during the 64-bit code generation. 3003 3004The AcpiSrc source code conversion tool now inserts one line of whitespace 3005after an if() statement that is followed immediately by a comment, improving 3006readability of the Linux code. 3007 3008Code and Data Size: The current and previous library sizes for the core 3009subsystem are shown below. These are the code and data sizes for the 3010acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3011values do not include any ACPI driver or OSPM code. The debug version of the 3012code includes the debug output trace mechanism and has a much larger code 3013and data size. Note that these values will vary depending on the efficiency 3014of the compiler and the compiler options used during generation. 3015 3016 Previous Release: 3017 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 3018 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 3019 Current Release: 3020 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 3021 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 3022 3023 30242) iASL Compiler/Disassembler: 3025 3026Fixed a problem with the disassembly of a BankField operator with a complex 3027expression for the BankValue parameter. 3028 3029---------------------------------------- 303027 January 2006. Summary of changes for version 20060127: 3031 30321) ACPI CA Core Subsystem: 3033 3034Implemented support in the Resource Manager to allow unresolved namestring 3035references within resource package objects for the _PRT method. This support 3036is in addition to the previously implemented unresolved reference support 3037within the AML parser. If the interpreter slack mode is enabled, these 3038unresolved references will be passed through to the caller as a NULL package 3039entry. 3040 3041Implemented and deployed new macros and functions for error and warning 3042messages across the subsystem. These macros are simpler and generate less 3043code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION, 3044ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older 3045macros remain defined to allow ACPI drivers time to migrate to the new 3046macros. 3047 3048Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of the 3049Acquire/Release Lock OSL interfaces. 3050 3051Fixed a problem where Alias ASL operators are sometimes not correctly 3052resolved, in both the interpreter and the iASL compiler. 3053 3054Fixed several problems with the implementation of the ConcatenateResTemplate 3055ASL operator. As per the ACPI specification, zero length buffers are now 3056treated as a single EndTag. One-length buffers always cause a fatal 3057exception. Non-zero length buffers that do not end with a full 2-byte EndTag 3058cause a fatal exception. 3059 3060Fixed a possible structure overwrite in the AcpiGetObjectInfo external 3061interface. (With assistance from Thomas Renninger) 3062 3063Code and Data Size: The current and previous library sizes for the core 3064subsystem are shown below. These are the code and data sizes for the 3065acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3066values do not include any ACPI driver or OSPM code. The debug version of the 3067code includes the debug output trace mechanism and has a much larger code 3068and data size. Note that these values will vary depending on the efficiency 3069of the compiler and the compiler options used during generation. 3070 3071 Previous Release: 3072 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 3073 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 3074 Current Release: 3075 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 3076 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 3077 3078 30792) iASL Compiler/Disassembler: 3080 3081Fixed an internal error that was generated for any forward references to ASL 3082Alias objects. 3083 3084---------------------------------------- 308513 January 2006. Summary of changes for version 20060113: 3086 30871) ACPI CA Core Subsystem: 3088 3089Added 2006 copyright to all module headers and signons. This affects 3090virtually every file in the ACPICA core subsystem, iASL compiler, and the 3091utilities. 3092 3093Enhanced the ACPICA error reporting in order to simplify user migration to 3094the non-debug version of ACPICA. Replaced all instances of the 3095ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN debug 3096levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros, 3097respectively. This preserves all error and warning messages in the non-debug 3098version of the ACPICA code (this has been referred to as the "debug lite" 3099option.) Over 200 cases were converted to create a total of over 380 3100error/warning messages across the ACPICA code. This increases the code and 3101data size of the default non-debug version of the code somewhat (about 13K), 3102but all error/warning reporting may be disabled if desired (and code 3103eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time 3104configuration option. The size of the debug version of ACPICA remains about 3105the same. 3106 3107Fixed a memory leak within the AML Debugger "Set" command. One object was 3108not properly deleted for every successful invocation of the command. 3109 3110Code and Data Size: The current and previous library sizes for the core 3111subsystem are shown below. These are the code and data sizes for the 3112acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3113values do not include any ACPI driver or OSPM code. The debug version of the 3114code includes the debug output trace mechanism and has a much larger code 3115and data size. Note that these values will vary depending on the efficiency 3116of the compiler and the compiler options used during generation. 3117 3118 Previous Release: 3119 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 3120 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 3121 Current Release: 3122 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 3123 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 3124 3125 31262) iASL Compiler/Disassembler: 3127 3128The compiler now officially supports the ACPI 3.0a specification that was 3129released on December 30, 2005. (Specification is available at www.acpi.info) 3130 3131---------------------------------------- 313216 December 2005. Summary of changes for version 20051216: 3133 31341) ACPI CA Core Subsystem: 3135 3136Implemented optional support to allow unresolved names within ASL Package 3137objects. A null object is inserted in the package when a named reference 3138cannot be located in the current namespace. Enabled via the interpreter 3139slack flag, this should eliminate AE_NOT_FOUND exceptions seen on machines 3140that contain such code. 3141 3142Implemented an optimization to the initialization sequence that can improve 3143boot time. During ACPI device initialization, the _STA method is now run if 3144and only if the _INI method exists. The _STA method is used to determine if 3145the device is present; An _INI can only be run if _STA returns present, but 3146it is a waste of time to run the _STA method if the _INI does not exist. 3147(Prototype and assistance from Dong Wei) 3148 3149Implemented use of the C99 uintptr_t for the pointer casting macros if it is 3150available in the current compiler. Otherwise, the default (void *) cast is 3151used as before. 3152 3153Fixed some possible memory leaks found within the execution path of the 3154Break, Continue, If, and CreateField operators. (Valery Podrezov) 3155 3156Fixed a problem introduced in the 20051202 release where an exception is 3157generated during method execution if a control method attempts to declare 3158another method. 3159 3160Moved resource descriptor string constants that are used by both the AML 3161disassembler and AML debugger to the common utilities directory so that 3162these components are independent. 3163 3164Implemented support in the AcpiExec utility (-e switch) to globally ignore 3165exceptions during control method execution (method is not aborted.) 3166 3167Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix 3168generation. 3169 3170Code and Data Size: The current and previous library sizes for the core 3171subsystem are shown below. These are the code and data sizes for the 3172acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3173values do not include any ACPI driver or OSPM code. The debug version of the 3174code includes the debug output trace mechanism and has a much larger code 3175and data size. Note that these values will vary depending on the efficiency 3176of the compiler and the compiler options used during generation. 3177 3178 Previous Release: 3179 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 3180 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 3181 Current Release: 3182 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 3183 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 3184 3185 31862) iASL Compiler/Disassembler: 3187 3188Fixed a problem where a CPU stack overflow fault could occur if a recursive 3189method call was made from within a Return statement. 3190 3191---------------------------------------- 319202 December 2005. Summary of changes for version 20051202: 3193 31941) ACPI CA Core Subsystem: 3195 3196Modified the parsing of control methods to no longer create namespace 3197objects during the first pass of the parse. Objects are now created only 3198during the execute phase, at the moment the namespace creation operator is 3199encountered in the AML (Name, OperationRegion, CreateByteField, etc.) This 3200should eliminate ALREADY_EXISTS exceptions seen on some machines where 3201reentrant control methods are protected by an AML mutex. The mutex will now 3202correctly block multiple threads from attempting to create the same object 3203more than once. 3204 3205Increased the number of available Owner Ids for namespace object tracking 3206from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen on 3207some machines with a large number of ACPI tables (either static or dynamic). 3208 3209Fixed a problem with the AcpiExec utility where a fault could occur when the 3210-b switch (batch mode) is used. 3211 3212Enhanced the namespace dump routine to output the owner ID for each 3213namespace object. 3214 3215Code and Data Size: The current and previous library sizes for the core 3216subsystem are shown below. These are the code and data sizes for the 3217acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3218values do not include any ACPI driver or OSPM code. The debug version of the 3219code includes the debug output trace mechanism and has a much larger code 3220and data size. Note that these values will vary depending on the efficiency 3221of the compiler and the compiler options used during generation. 3222 3223 Previous Release: 3224 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 3225 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 3226 Current Release: 3227 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 3228 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 3229 3230 32312) iASL Compiler/Disassembler: 3232 3233Fixed a parse error during compilation of certain Switch/Case constructs. To 3234simplify the parse, the grammar now allows for multiple Default statements 3235and this error is now detected and flagged during the analysis phase. 3236 3237Disassembler: The disassembly now includes the contents of the original 3238table header within a comment at the start of the file. This includes the 3239name and version of the original ASL compiler. 3240 3241---------------------------------------- 324217 November 2005. Summary of changes for version 20051117: 3243 32441) ACPI CA Core Subsystem: 3245 3246Fixed a problem in the AML parser where the method thread count could be 3247decremented below zero if any errors occurred during the method parse phase. 3248This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some machines. 3249This also fixed a related regression with the mechanism that detects and 3250corrects methods that cannot properly handle reentrancy (related to the 3251deployment of the new OwnerId mechanism.) 3252 3253Eliminated the pre-parsing of control methods (to detect errors) during 3254table load. Related to the problem above, this was causing unwind issues if 3255any errors occurred during the parse, and it seemed to be overkill. A table 3256load should not be aborted if there are problems with any single control 3257method, thus rendering this feature rather pointless. 3258 3259Fixed a problem with the new table-driven resource manager where an internal 3260buffer overflow could occur for small resource templates. 3261 3262Implemented a new external interface, AcpiGetVendorResource. This interface 3263will find and return a vendor-defined resource descriptor within a _CRS or 3264_PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn Helgaas. 3265 3266Removed the length limit (200) on string objects as per the upcoming ACPI 32673.0A specification. This affects the following areas of the interpreter: 1) 3268any implicit conversion of a Buffer to a String, 2) a String object result 3269of the ASL Concatentate operator, 3) the String object result of the ASL 3270ToString operator. 3271 3272Fixed a problem in the Windows OS interface layer (OSL) where a WAIT_FOREVER 3273on a semaphore object would incorrectly timeout. This allows the 3274multithreading features of the AcpiExec utility to work properly under 3275Windows. 3276 3277Updated the Linux makefiles for the iASL compiler and AcpiExec to include 3278the recently added file named "utresrc.c". 3279 3280Code and Data Size: The current and previous library sizes for the core 3281subsystem are shown below. These are the code and data sizes for the 3282acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3283values do not include any ACPI driver or OSPM code. The debug version of the 3284code includes the debug output trace mechanism and has a much larger code 3285and data size. Note that these values will vary depending on the efficiency 3286of the compiler and the compiler options used during generation. 3287 3288 Previous Release: 3289 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 3290 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 3291 Current Release: 3292 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 3293 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 3294 3295 32962) iASL Compiler/Disassembler: 3297 3298Removed the limit (200) on string objects as per the upcoming ACPI 3.0A 3299specification. For the iASL compiler, this means that string literals within 3300the source ASL can be of any length. 3301 3302Enhanced the listing output to dump the AML code for resource descriptors 3303immediately after the ASL code for each descriptor, instead of in a block at 3304the end of the entire resource template. 3305 3306Enhanced the compiler debug output to dump the entire original parse tree 3307constructed during the parse phase, before any transforms are applied to the 3308tree. The transformed tree is dumped also. 3309 3310---------------------------------------- 331102 November 2005. Summary of changes for version 20051102: 3312 33131) ACPI CA Core Subsystem: 3314 3315Modified the subsystem initialization sequence to improve GPE support. The 3316GPE initialization has been split into two parts in order to defer execution 3317of the _PRW methods (Power Resources for Wake) until after the hardware is 3318fully initialized and the SCI handler is installed. This allows the _PRW 3319methods to access fields protected by the Global Lock. This will fix systems 3320where a NO_GLOBAL_LOCK exception has been seen during initialization. 3321 3322Converted the ACPI internal object disassemble and display code within the 3323AML debugger to fully table-driven operation, reducing code size and 3324increasing maintainability. 3325 3326Fixed a regression with the ConcatenateResTemplate() ASL operator introduced 3327in the 20051021 release. 3328 3329Implemented support for "local" internal ACPI object types within the 3330debugger "Object" command and the AcpiWalkNamespace external interfaces. 3331These local types include RegionFields, BankFields, IndexFields, Alias, and 3332reference objects. 3333 3334Moved common AML resource handling code into a new file, "utresrc.c". This 3335code is shared by both the Resource Manager and the AML Debugger. 3336 3337Code and Data Size: The current and previous library sizes for the core 3338subsystem are shown below. These are the code and data sizes for the 3339acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3340values do not include any ACPI driver or OSPM code. The debug version of the 3341code includes the debug output trace mechanism and has a much larger code 3342and data size. Note that these values will vary depending on the efficiency 3343of the compiler and the compiler options used during generation. 3344 3345 Previous Release: 3346 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 3347 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 3348 Current Release: 3349 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 3350 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 3351 3352 33532) iASL Compiler/Disassembler: 3354 3355Fixed a problem with very large initializer lists (more than 4000 elements) 3356for both Buffer and Package objects where the parse stack could overflow. 3357 3358Enhanced the pre-compile source code scan for non-ASCII characters to ignore 3359characters within comment fields. The scan is now always performed and is no 3360longer optional, detecting invalid characters within a source file 3361immediately rather than during the parse phase or later. 3362 3363Enhanced the ASL grammar definition to force early reductions on all list- 3364style grammar elements so that the overall parse stack usage is greatly 3365reduced. This should improve performance and reduce the possibility of parse 3366stack overflow. 3367 3368Eliminated all reduce/reduce conflicts in the iASL parser generation. Also, 3369with the addition of a %expected statement, the compiler generates from 3370source with no warnings. 3371 3372Fixed a possible segment fault in the disassembler if the input filename 3373does not contain a "dot" extension (Thomas Renninger). 3374 3375---------------------------------------- 337621 October 2005. Summary of changes for version 20051021: 3377 33781) ACPI CA Core Subsystem: 3379 3380Implemented support for the EM64T and other x86-64 processors. This 3381essentially entails recognizing that these processors support non-aligned 3382memory transfers. Previously, all 64-bit processors were assumed to lack 3383hardware support for non-aligned transfers. 3384 3385Completed conversion of the Resource Manager to nearly full table-driven 3386operation. Specifically, the resource conversion code (convert AML to 3387internal format and the reverse) and the debug code to dump internal 3388resource descriptors are fully table-driven, reducing code and data size and 3389improving maintainability. 3390 3391The OSL interfaces for Acquire and Release Lock now use a 64-bit flag word 3392on 64-bit processors instead of a fixed 32-bit word. (With assistance from 3393Alexey Starikovskiy) 3394 3395Implemented support within the resource conversion code for the Type- 3396Specific byte within the various ACPI 3.0 *WordSpace macros. 3397 3398Fixed some issues within the resource conversion code for the type-specific 3399flags for both Memory and I/O address resource descriptors. For Memory, 3400implemented support for the MTP and TTP flags. For I/O, split the TRS and 3401TTP flags into two separate fields. 3402 3403Code and Data Size: The current and previous library sizes for the core 3404subsystem are shown below. These are the code and data sizes for the 3405acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3406values do not include any ACPI driver or OSPM code. The debug version of the 3407code includes the debug output trace mechanism and has a much larger code 3408and data size. Note that these values will vary depending on the efficiency 3409of the compiler and the compiler options used during generation. 3410 3411 Previous Release: 3412 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 3413 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 3414 Current Release: 3415 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 3416 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 3417 3418 3419 34202) iASL Compiler/Disassembler: 3421 3422Relaxed a compiler restriction that disallowed a ResourceIndex byte if the 3423corresponding ResourceSource string was not also present in a resource 3424descriptor declaration. This restriction caused problems with existing 3425AML/ASL code that includes the Index byte without the string. When such AML 3426was disassembled, it could not be compiled without modification. Further, 3427the modified code created a resource template with a different size than the 3428original, breaking code that used fixed offsets into the resource template 3429buffer. 3430 3431Removed a recent feature of the disassembler to ignore a lone ResourceIndex 3432byte. This byte is now emitted if present so that the exact AML can be 3433reproduced when the disassembled code is recompiled. 3434 3435Improved comments and text alignment for the resource descriptor code 3436emitted by the disassembler. 3437 3438Implemented disassembler support for the ACPI 3.0 AccessSize field within a 3439Register() resource descriptor. 3440 3441---------------------------------------- 344230 September 2005. Summary of changes for version 20050930: 3443 34441) ACPI CA Core Subsystem: 3445 3446Completed a major overhaul of the Resource Manager code - specifically, 3447optimizations in the area of the AML/internal resource conversion code. The 3448code has been optimized to simplify and eliminate duplicated code, CPU stack 3449use has been decreased by optimizing function parameters and local 3450variables, and naming conventions across the manager have been standardized 3451for clarity and ease of maintenance (this includes function, parameter, 3452variable, and struct/typedef names.) The update may force changes in some 3453driver code, depending on how resources are handled by the host OS. 3454 3455All Resource Manager dispatch and information tables have been moved to a 3456single location for clarity and ease of maintenance. One new file was 3457created, named "rsinfo.c". 3458 3459The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to 3460guarantee that the argument is not evaluated twice, making them less prone 3461to macro side-effects. However, since there exists the possibility of 3462additional stack use if a particular compiler cannot optimize them (such as 3463in the debug generation case), the original macros are optionally available. 3464Note that some invocations of the return_VALUE macro may now cause size 3465mismatch warnings; the return_UINT8 and return_UINT32 macros are provided to 3466eliminate these. (From Randy Dunlap) 3467 3468Implemented a new mechanism to enable debug tracing for individual control 3469methods. A new external interface, AcpiDebugTrace, is provided to enable 3470this mechanism. The intent is to allow the host OS to easily enable and 3471disable tracing for problematic control methods. This interface can be 3472easily exposed to a user or debugger interface if desired. See the file 3473psxface.c for details. 3474 3475AcpiUtCallocate will now return a valid pointer if a length of zero is 3476specified - a length of one is used and a warning is issued. This matches 3477the behavior of AcpiUtAllocate. 3478 3479Code and Data Size: The current and previous library sizes for the core 3480subsystem are shown below. These are the code and data sizes for the 3481acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3482values do not include any ACPI driver or OSPM code. The debug version of the 3483code includes the debug output trace mechanism and has a much larger code 3484and data size. Note that these values will vary depending on the efficiency 3485of the compiler and the compiler options used during generation. 3486 3487 Previous Release: 3488 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 3489 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 3490 Current Release: 3491 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 3492 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 3493 3494 34952) iASL Compiler/Disassembler: 3496 3497A remark is issued if the effective compile-time length of a package or 3498buffer is zero. Previously, this was a warning. 3499 3500---------------------------------------- 350116 September 2005. Summary of changes for version 20050916: 3502 35031) ACPI CA Core Subsystem: 3504 3505Fixed a problem within the Resource Manager where support for the Generic 3506Register descriptor was not fully implemented. This descriptor is now fully 3507recognized, parsed, disassembled, and displayed. 3508 3509Completely restructured the Resource Manager code to utilize table-driven 3510dispatch and lookup, eliminating many of the large switch() statements. This 3511reduces overall subsystem code size and code complexity. Affects the 3512resource parsing and construction, disassembly, and debug dump output. 3513 3514Cleaned up and restructured the debug dump output for all resource 3515descriptors. Improved readability of the output and reduced code size. 3516 3517Fixed a problem where changes to internal data structures caused the 3518optional ACPI_MUTEX_DEBUG code to fail compilation if specified. 3519 3520Code and Data Size: The current and previous library sizes for the core 3521subsystem are shown below. These are the code and data sizes for the 3522acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3523values do not include any ACPI driver or OSPM code. The debug version of the 3524code includes the debug output trace mechanism and has a much larger code 3525and data size. Note that these values will vary depending on the efficiency 3526of the compiler and the compiler options used during generation. 3527 3528 Previous Release: 3529 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 3530 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 3531 Current Release: 3532 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 3533 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 3534 3535 35362) iASL Compiler/Disassembler: 3537 3538Updated the disassembler to automatically insert an EndDependentFn() macro 3539into the ASL stream if this macro is missing in the original AML code, 3540simplifying compilation of the resulting ASL module. 3541 3542Fixed a problem in the disassembler where a disassembled ResourceSource 3543string (within a large resource descriptor) was not surrounded by quotes and 3544not followed by a comma, causing errors when the resulting ASL module was 3545compiled. Also, escape sequences within a ResourceSource string are now 3546handled correctly (especially "\\") 3547 3548---------------------------------------- 354902 September 2005. Summary of changes for version 20050902: 3550 35511) ACPI CA Core Subsystem: 3552 3553Fixed a problem with the internal Owner ID allocation and deallocation 3554mechanisms for control method execution and recursive method invocation. 3555This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId" 3556messages seen on some systems. Recursive method invocation depth is 3557currently limited to 255. (Alexey Starikovskiy) 3558 3559Completely eliminated all vestiges of support for the "module-level 3560executable code" until this support is fully implemented and debugged. This 3561should eliminate the NO_RETURN_VALUE exceptions seen during table load on 3562some systems that invoke this support. 3563 3564Fixed a problem within the resource manager code where the transaction flags 3565for a 64-bit address descriptor were handled incorrectly in the type- 3566specific flag byte. 3567 3568Consolidated duplicate code within the address descriptor resource manager 3569code, reducing overall subsystem code size. 3570 3571Fixed a fault when using the AML debugger "disassemble" command to 3572disassemble individual control methods. 3573 3574Removed references to the "release_current" directory within the Unix 3575release package. 3576 3577Code and Data Size: The current and previous core subsystem library sizes 3578are shown below. These are the code and data sizes for the acpica.lib 3579produced by the Microsoft Visual C++ 6.0 compiler. These values do not 3580include any ACPI driver or OSPM code. The debug version of the code includes 3581the debug output trace mechanism and has a much larger code and data size. 3582Note that these values will vary depending on the efficiency of the compiler 3583and the compiler options used during generation. 3584 3585 Previous Release: 3586 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 3587 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 3588 Current Release: 3589 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 3590 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 3591 3592 35932) iASL Compiler/Disassembler: 3594 3595Implemented an error check for illegal duplicate values in the interrupt and 3596dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and 3597Interrupt(). 3598 3599Implemented error checking for the Irq() and IrqNoFlags() macros to detect 3600too many values in the interrupt list (16 max) and invalid values in the 3601list (range 0 - 15) 3602 3603The maximum length string literal within an ASL file is now restricted to 3604200 characters as per the ACPI specification. 3605 3606Fixed a fault when using the -ln option (generate namespace listing). 3607 3608Implemented an error check to determine if a DescriptorName within a 3609resource descriptor has already been used within the current scope. 3610 3611---------------------------------------- 361215 August 2005. Summary of changes for version 20050815: 3613 36141) ACPI CA Core Subsystem: 3615 3616Implemented a full bytewise compare to determine if a table load request is 3617attempting to load a duplicate table. The compare is performed if the table 3618signatures and table lengths match. This will allow different tables with 3619the same OEM Table ID and revision to be loaded - probably against the ACPI 3620specification, but discovered in the field nonetheless. 3621 3622Added the changes.txt logfile to each of the zipped release packages. 3623 3624Code and Data Size: Current and previous core subsystem library sizes are 3625shown below. These are the code and data sizes for the acpica.lib produced 3626by the Microsoft Visual C++ 6.0 compiler, and these values do not include 3627any ACPI driver or OSPM code. The debug version of the code includes the 3628debug output trace mechanism and has a much larger code and data size. Note 3629that these values will vary depending on the efficiency of the compiler and 3630the compiler options used during generation. 3631 3632 Previous Release: 3633 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 3634 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 3635 Current Release: 3636 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 3637 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 3638 3639 36402) iASL Compiler/Disassembler: 3641 3642Fixed a problem where incorrect AML code could be generated for Package 3643objects if optimization is disabled (via the -oa switch). 3644 3645Fixed a problem with where incorrect AML code is generated for variable- 3646length packages when the package length is not specified and the number of 3647initializer values is greater than 255. 3648 3649 3650---------------------------------------- 365129 July 2005. Summary of changes for version 20050729: 3652 36531) ACPI CA Core Subsystem: 3654 3655Implemented support to ignore an attempt to install/load a particular ACPI 3656table more than once. Apparently there exists BIOS code that repeatedly 3657attempts to load the same SSDT upon certain events. With assistance from 3658Venkatesh Pallipadi. 3659 3660Restructured the main interface to the AML parser in order to correctly 3661handle all exceptional conditions. This will prevent leakage of the OwnerId 3662resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on some 3663machines. With assistance from Alexey Starikovskiy. 3664 3665Support for "module level code" has been disabled in this version due to a 3666number of issues that have appeared on various machines. The support can be 3667enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem 3668compilation. When the issues are fully resolved, the code will be enabled by 3669default again. 3670 3671Modified the internal functions for debug print support to define the 3672FunctionName parameter as a (const char *) for compatibility with compiler 3673built-in macros such as __FUNCTION__, etc. 3674 3675Linted the entire ACPICA source tree for both 32-bit and 64-bit. 3676 3677Implemented support to display an object count summary for the AML Debugger 3678commands Object and Methods. 3679 3680Code and Data Size: Current and previous core subsystem library sizes are 3681shown below. These are the code and data sizes for the acpica.lib produced 3682by the Microsoft Visual C++ 6.0 compiler, and these values do not include 3683any ACPI driver or OSPM code. The debug version of the code includes the 3684debug output trace mechanism and has a much larger code and data size. Note 3685that these values will vary depending on the efficiency of the compiler and 3686the compiler options used during generation. 3687 3688 Previous Release: 3689 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 3690 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 3691 Current Release: 3692 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 3693 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 3694 3695 36962) iASL Compiler/Disassembler: 3697 3698Fixed a regression that appeared in the 20050708 version of the compiler 3699where an error message was inadvertently emitted for invocations of the _OSI 3700reserved control method. 3701 3702---------------------------------------- 370308 July 2005. Summary of changes for version 20050708: 3704 37051) ACPI CA Core Subsystem: 3706 3707The use of the CPU stack in the debug version of the subsystem has been 3708considerably reduced. Previously, a debug structure was declared in every 3709function that used the debug macros. This structure has been removed in 3710favor of declaring the individual elements as parameters to the debug 3711functions. This reduces the cumulative stack use during nested execution of 3712ACPI function calls at the cost of a small increase in the code size of the 3713debug version of the subsystem. With assistance from Alexey Starikovskiy and 3714Len Brown. 3715 3716Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent 3717headers to define a macro that will return the current function name at 3718runtime (such as __FUNCTION__ or _func_, etc.) The function name is used by 3719the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the 3720compiler-dependent header, the function name is saved on the CPU stack (one 3721pointer per function.) This mechanism is used because apparently there 3722exists no standard ANSI-C defined macro that that returns the function name. 3723 3724Redesigned and reimplemented the "Owner ID" mechanism used to track 3725namespace objects created/deleted by ACPI tables and control method 3726execution. A bitmap is now used to allocate and free the IDs, thus solving 3727the wraparound problem present in the previous implementation. The size of 3728the namespace node descriptor was reduced by 2 bytes as a result (Alexey 3729Starikovskiy). 3730 3731Removed the UINT32_BIT and UINT16_BIT types that were used for the bitfield 3732flag definitions within the headers for the predefined ACPI tables. These 3733have been replaced by UINT8_BIT in order to increase the code portability of 3734the subsystem. If the use of UINT8 remains a problem, we may be forced to 3735eliminate bitfields entirely because of a lack of portability. 3736 3737Enhanced the performance of the AcpiUtUpdateObjectReference procedure. This 3738is a frequently used function and this improvement increases the performance 3739of the entire subsystem (Alexey Starikovskiy). 3740 3741Fixed several possible memory leaks and the inverse - premature object 3742deletion (Alexey Starikovskiy). 3743 3744Code and Data Size: Current and previous core subsystem library sizes are 3745shown below. These are the code and data sizes for the acpica.lib produced 3746by the Microsoft Visual C++ 6.0 compiler, and these values do not include 3747any ACPI driver or OSPM code. The debug version of the code includes the 3748debug output trace mechanism and has a much larger code and data size. Note 3749that these values will vary depending on the efficiency of the compiler and 3750the compiler options used during generation. 3751 3752 Previous Release: 3753 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 3754 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 3755 Current Release: 3756 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 3757 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 3758 3759---------------------------------------- 376024 June 2005. Summary of changes for version 20050624: 3761 37621) ACPI CA Core Subsystem: 3763 3764Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for 3765the host-defined cache object. This allows the OSL implementation to define 3766and type this object in any manner desired, simplifying the OSL 3767implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for 3768Linux, and should be defined in the OS-specific header file for other 3769operating systems as required. 3770 3771Changed the interface to AcpiOsAcquireObject to directly return the 3772requested object as the function return (instead of ACPI_STATUS.) This 3773change was made for performance reasons, since this is the purpose of the 3774interface in the first place. AcpiOsAcquireObject is now similar to the 3775AcpiOsAllocate interface. 3776 3777Implemented a new AML debugger command named Businfo. This command displays 3778information about all devices that have an associate _PRT object. The _ADR, 3779_HID, _UID, and _CID are displayed for these devices. 3780 3781Modified the initialization sequence in AcpiInitializeSubsystem to call the 3782OSL interface AcpiOslInitialize first, before any local initialization. This 3783change was required because the global initialization now calls OSL 3784interfaces. 3785 3786Enhanced the Dump command to display the entire contents of Package objects 3787(including all sub-objects and their values.) 3788 3789Restructured the code base to split some files because of size and/or 3790because the code logically belonged in a separate file. New files are listed 3791below. All makefiles and project files included in the ACPI CA release have 3792been updated. 3793 utilities/utcache.c /* Local cache interfaces */ 3794 utilities/utmutex.c /* Local mutex support */ 3795 utilities/utstate.c /* State object support */ 3796 interpreter/parser/psloop.c /* Main AML parse loop */ 3797 3798Code and Data Size: Current and previous core subsystem library sizes are 3799shown below. These are the code and data sizes for the acpica.lib produced 3800by the Microsoft Visual C++ 6.0 compiler, and these values do not include 3801any ACPI driver or OSPM code. The debug version of the code includes the 3802debug output trace mechanism and has a much larger code and data size. Note 3803that these values will vary depending on the efficiency of the compiler and 3804the compiler options used during generation. 3805 3806 Previous Release: 3807 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 3808 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 3809 Current Release: 3810 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 3811 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 3812 3813 38142) iASL Compiler/Disassembler: 3815 3816Fixed a regression introduced in version 20050513 where the use of a Package 3817object within a Case() statement caused a compile time exception. The 3818original behavior has been restored (a Match() operator is emitted.) 3819 3820---------------------------------------- 382117 June 2005. Summary of changes for version 20050617: 3822 38231) ACPI CA Core Subsystem: 3824 3825Moved the object cache operations into the OS interface layer (OSL) to allow 3826the host OS to handle these operations if desired (for example, the Linux 3827OSL will invoke the slab allocator). This support is optional; the compile 3828time define ACPI_USE_LOCAL_CACHE may be used to utilize the original cache 3829code in the ACPI CA core. The new OSL interfaces are shown below. See 3830utalloc.c for an example implementation, and acpiosxf.h for the exact 3831interface definitions. With assistance from Alexey Starikovskiy. 3832 AcpiOsCreateCache 3833 AcpiOsDeleteCache 3834 AcpiOsPurgeCache 3835 AcpiOsAcquireObject 3836 AcpiOsReleaseObject 3837 3838Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to return 3839and restore a flags parameter. This fits better with many OS lock models. 3840Note: the current execution state (interrupt handler or not) is no longer 3841passed to these interfaces. If necessary, the OSL must determine this state 3842by itself, a simple and fast operation. With assistance from Alexey 3843Starikovskiy. 3844 3845Fixed a problem in the ACPI table handling where a valid XSDT was assumed 3846present if the revision of the RSDP was 2 or greater. According to the ACPI 3847specification, the XSDT is optional in all cases, and the table manager 3848therefore now checks for both an RSDP >=2 and a valid XSDT pointer. 3849Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs contain 3850only the RSDT. 3851 3852Fixed an interpreter problem with the Mid() operator in the case of an input 3853string where the resulting output string is of zero length. It now correctly 3854returns a valid, null terminated string object instead of a string object 3855with a null pointer. 3856 3857Fixed a problem with the control method argument handling to allow a store 3858to an Arg object that already contains an object of type Device. The Device 3859object is now correctly overwritten. Previously, an error was returned. 3860 3861 3862Enhanced the debugger Find command to emit object values in addition to the 3863found object pathnames. The output format is the same as the dump namespace 3864command. 3865 3866Enhanced the debugger Set command. It now has the ability to set the value 3867of any Named integer object in the namespace (Previously, only method locals 3868and args could be set.) 3869 3870Code and Data Size: Current and previous core subsystem library sizes are 3871shown below. These are the code and data sizes for the acpica.lib produced 3872by the Microsoft Visual C++ 6.0 compiler, and these values do not include 3873any ACPI driver or OSPM code. The debug version of the code includes the 3874debug output trace mechanism and has a much larger code and data size. Note 3875that these values will vary depending on the efficiency of the compiler and 3876the compiler options used during generation. 3877 3878 Previous Release: 3879 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 3880 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 3881 Current Release: 3882 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 3883 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 3884 3885 38862) iASL Compiler/Disassembler: 3887 3888Fixed a regression in the disassembler where if/else/while constructs were 3889output incorrectly. This problem was introduced in the previous release 3890(20050526). This problem also affected the single-step disassembly in the 3891debugger. 3892 3893Fixed a problem where compiling the reserved _OSI method would randomly (but 3894rarely) produce compile errors. 3895 3896Enhanced the disassembler to emit compilable code in the face of incorrect 3897AML resource descriptors. If the optional ResourceSourceIndex is present, 3898but the ResourceSource is not, do not emit the ResourceSourceIndex in the 3899disassembly. Otherwise, the resulting code cannot be compiled without 3900errors. 3901 3902---------------------------------------- 390326 May 2005. Summary of changes for version 20050526: 3904 39051) ACPI CA Core Subsystem: 3906 3907Implemented support to execute Type 1 and Type 2 AML opcodes appearing at 3908the module level (not within a control method.) These opcodes are executed 3909exactly once at the time the table is loaded. This type of code was legal up 3910until the release of ACPI 2.0B (2002) and is now supported within ACPI CA in 3911order to provide backwards compatibility with earlier BIOS implementations. 3912This eliminates the "Encountered executable code at module level" warning 3913that was previously generated upon detection of such code. 3914 3915Fixed a problem in the interpreter where an AE_NOT_FOUND exception could 3916inadvertently be generated during the lookup of namespace objects in the 3917second pass parse of ACPI tables and control methods. It appears that this 3918problem could occur during the resolution of forward references to namespace 3919objects. 3920 3921Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function, 3922corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This 3923allows the deadlock detection debug code to be compiled out in the normal 3924case, improving mutex performance (and overall subsystem performance) 3925considerably. 3926 3927Implemented a handful of miscellaneous fixes for possible memory leaks on 3928error conditions and error handling control paths. These fixes were 3929suggested by FreeBSD and the Coverity Prevent source code analysis tool. 3930 3931Added a check for a null RSDT pointer in AcpiGetFirmwareTable (tbxfroot.c) 3932to prevent a fault in this error case. 3933 3934Code and Data Size: Current and previous core subsystem library sizes are 3935shown below. These are the code and data sizes for the acpica.lib produced 3936by the Microsoft Visual C++ 6.0 compiler, and these values do not include 3937any ACPI driver or OSPM code. The debug version of the code includes the 3938debug output trace mechanism and has a much larger code and data size. Note 3939that these values will vary depending on the efficiency of the compiler and 3940the compiler options used during generation. 3941 3942 Previous Release: 3943 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 3944 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 3945 Current Release: 3946 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 3947 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 3948 3949 39502) iASL Compiler/Disassembler: 3951 3952Implemented support to allow Type 1 and Type 2 ASL operators to appear at 3953the module level (not within a control method.) These operators will be 3954executed once at the time the table is loaded. This type of code was legal 3955up until the release of ACPI 2.0B (2002) and is now supported by the iASL 3956compiler in order to provide backwards compatibility with earlier BIOS ASL 3957code. 3958 3959The ACPI integer width (specified via the table revision ID or the -r 3960override, 32 or 64 bits) is now used internally during compile-time constant 3961folding to ensure that constants are truncated to 32 bits if necessary. 3962Previously, the revision ID value was only emitted in the AML table header. 3963 3964An error message is now generated for the Mutex and Method operators if the 3965SyncLevel parameter is outside the legal range of 0 through 15. 3966 3967Fixed a problem with the Method operator ParameterTypes list handling (ACPI 39683.0). Previously, more than 2 types or 2 arguments generated a syntax error. 3969The actual underlying implementation of method argument typechecking is 3970still under development, however. 3971 3972---------------------------------------- 397313 May 2005. Summary of changes for version 20050513: 3974 39751) ACPI CA Core Subsystem: 3976 3977Implemented support for PCI Express root bridges -- added support for device 3978PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup. 3979 3980The interpreter now automatically truncates incoming 64-bit constants to 32 3981bits if currently executing out of a 32-bit ACPI table (Revision < 2). This 3982also affects the iASL compiler constant folding. (Note: as per below, the 3983iASL compiler no longer allows 64-bit constants within 32-bit tables.) 3984 3985Fixed a problem where string and buffer objects with "static" pointers 3986(pointers to initialization data within an ACPI table) were not handled 3987consistently. The internal object copy operation now always copies the data 3988to a newly allocated buffer, regardless of whether the source object is 3989static or not. 3990 3991Fixed a problem with the FromBCD operator where an implicit result 3992conversion was improperly performed while storing the result to the target 3993operand. Since this is an "explicit conversion" operator, the implicit 3994conversion should never be performed on the output. 3995 3996Fixed a problem with the CopyObject operator where a copy to an existing 3997named object did not always completely overwrite the existing object stored 3998at name. Specifically, a buffer-to-buffer copy did not delete the existing 3999buffer. 4000 4001Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces and 4002structs for consistency. 4003 4004Code and Data Size: Current and previous core subsystem library sizes are 4005shown below. These are the code and data sizes for the acpica.lib produced 4006by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4007any ACPI driver or OSPM code. The debug version of the code includes the 4008debug output trace mechanism and has a much larger code and data size. Note 4009that these values will vary depending on the efficiency of the compiler and 4010the compiler options used during generation. 4011 4012 Previous Release: 4013 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 4014 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 4015 Current Release: (Same sizes) 4016 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 4017 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 4018 4019 40202) iASL Compiler/Disassembler: 4021 4022The compiler now emits a warning if an attempt is made to generate a 64-bit 4023integer constant from within a 32-bit ACPI table (Revision < 2). The integer 4024is truncated to 32 bits. 4025 4026Fixed a problem with large package objects: if the static length of the 4027package is greater than 255, the "variable length package" opcode is 4028emitted. Previously, this caused an error. This requires an update to the 4029ACPI spec, since it currently (incorrectly) states that packages larger than 4030255 elements are not allowed. 4031 4032The disassembler now correctly handles variable length packages and packages 4033larger than 255 elements. 4034 4035---------------------------------------- 403608 April 2005. Summary of changes for version 20050408: 4037 40381) ACPI CA Core Subsystem: 4039 4040Fixed three cases in the interpreter where an "index" argument to an ASL 4041function was still (internally) 32 bits instead of the required 64 bits. 4042This was the Index argument to the Index, Mid, and Match operators. 4043 4044The "strupr" function is now permanently local (AcpiUtStrupr), since this is 4045not a POSIX-defined function and not present in most kernel-level C 4046libraries. All references to the C library strupr function have been removed 4047from the headers. 4048 4049Completed the deployment of static functions/prototypes. All prototypes with 4050the static attribute have been moved from the headers to the owning C file. 4051 4052Implemented an extract option (-e) for the AcpiBin utility (AML binary 4053utility). This option allows the utility to extract individual ACPI tables 4054from the output of AcpiDmp. It provides the same functionality of the 4055acpixtract.pl perl script without the worry of setting the correct perl 4056options. AcpiBin runs on Windows and has not yet been generated/validated in 4057the Linux/Unix environment (but should be soon). 4058 4059Updated and fixed the table dump option for AcpiBin (-d). This option 4060converts a single ACPI table to a hex/ascii file, similar to the output of 4061AcpiDmp. 4062 4063Code and Data Size: Current and previous core subsystem library sizes are 4064shown below. These are the code and data sizes for the acpica.lib produced 4065by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4066any ACPI driver or OSPM code. The debug version of the code includes the 4067debug output trace mechanism and has a much larger code and data size. Note 4068that these values will vary depending on the efficiency of the compiler and 4069the compiler options used during generation. 4070 4071 Previous Release: 4072 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 4073 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 4074 Current Release: 4075 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 4076 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 4077 4078 40792) iASL Compiler/Disassembler: 4080 4081Disassembler fix: Added a check to ensure that the table length found in the 4082ACPI table header within the input file is not longer than the actual input 4083file size. This indicates some kind of file or table corruption. 4084 4085---------------------------------------- 408629 March 2005. Summary of changes for version 20050329: 4087 40881) ACPI CA Core Subsystem: 4089 4090An error is now generated if an attempt is made to create a Buffer Field of 4091length zero (A CreateField with a length operand of zero.) 4092 4093The interpreter now issues a warning whenever executable code at the module 4094level is detected during ACPI table load. This will give some idea of the 4095prevalence of this type of code. 4096 4097Implemented support for references to named objects (other than control 4098methods) within package objects. 4099 4100Enhanced package object output for the debug object. Package objects are now 4101completely dumped, showing all elements. 4102 4103Enhanced miscellaneous object output for the debug object. Any object can 4104now be written to the debug object (for example, a device object can be 4105written, and the type of the object will be displayed.) 4106 4107The "static" qualifier has been added to all local functions across both the 4108core subsystem and the iASL compiler. 4109 4110The number of "long" lines (> 80 chars) within the source has been 4111significantly reduced, by about 1/3. 4112 4113Cleaned up all header files to ensure that all CA/iASL functions are 4114prototyped (even static functions) and the formatting is consistent. 4115 4116Two new header files have been added, acopcode.h and acnames.h. 4117 4118Removed several obsolete functions that were no longer used. 4119 4120Code and Data Size: Current and previous core subsystem library sizes are 4121shown below. These are the code and data sizes for the acpica.lib produced 4122by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4123any ACPI driver or OSPM code. The debug version of the code includes the 4124debug output trace mechanism and has a much larger code and data size. Note 4125that these values will vary depending on the efficiency of the compiler and 4126the compiler options used during generation. 4127 4128 Previous Release: 4129 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4130 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 4131 Current Release: 4132 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 4133 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 4134 4135 4136 41372) iASL Compiler/Disassembler: 4138 4139Fixed a problem with the resource descriptor generation/support. For the 4140ResourceSourceIndex and the ResourceSource fields, both must be present, or 4141both must be not present - can't have one without the other. 4142 4143The compiler now returns non-zero from the main procedure if any errors have 4144occurred during the compilation. 4145 4146 4147---------------------------------------- 414809 March 2005. Summary of changes for version 20050309: 4149 41501) ACPI CA Core Subsystem: 4151 4152The string-to-buffer implicit conversion code has been modified again after 4153a change to the ACPI specification. In order to match the behavior of the 4154other major ACPI implementation, the target buffer is no longer truncated if 4155the source string is smaller than an existing target buffer. This change 4156requires an update to the ACPI spec, and should eliminate the recent 4157AE_AML_BUFFER_LIMIT issues. 4158 4159The "implicit return" support was rewritten to a new algorithm that solves 4160the general case. Rather than attempt to determine when a method is about to 4161exit, the result of every ASL operator is saved momentarily until the very 4162next ASL operator is executed. Therefore, no matter how the method exits, 4163there will always be a saved implicit return value. This feature is only 4164enabled with the AcpiGbl_EnableInterpreterSlack flag, and should eliminate 4165AE_AML_NO_RETURN_VALUE errors when enabled. 4166 4167Implemented implicit conversion support for the predicate (operand) of the 4168If, Else, and While operators. String and Buffer arguments are automatically 4169converted to Integers. 4170 4171Changed the string-to-integer conversion behavior to match the new ACPI 4172errata: "If no integer object exists, a new integer is created. The ASCII 4173string is interpreted as a hexadecimal constant. Each string character is 4174interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting 4175with the first character as the most significant digit, and ending with the 4176first non-hexadecimal character or end-of-string." This means that the first 4177non-hex character terminates the conversion and this is the code that was 4178changed. 4179 4180Fixed a problem where the ObjectType operator would fail (fault) when used 4181on an Index of a Package which pointed to a null package element. The 4182operator now properly returns zero (Uninitialized) in this case. 4183 4184Fixed a problem where the While operator used excessive memory by not 4185properly popping the result stack during execution. There was no memory leak 4186after execution, however. (Code provided by Valery Podrezov.) 4187 4188Fixed a problem where references to control methods within Package objects 4189caused the method to be invoked, instead of producing a reference object 4190pointing to the method. 4191 4192Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) to 4193improve performance and reduce code size. (Code provided by Alexey 4194Starikovskiy.) 4195 4196Code and Data Size: Current and previous core subsystem library sizes are 4197shown below. These are the code and data sizes for the acpica.lib produced 4198by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4199any ACPI driver or OSPM code. The debug version of the code includes the 4200debug output trace mechanism and has a much larger code and data size. Note 4201that these values will vary depending on the efficiency of the compiler and 4202the compiler options used during generation. 4203 4204 Previous Release: 4205 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4206 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 4207 Current Release: 4208 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4209 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 4210 4211 42122) iASL Compiler/Disassembler: 4213 4214Fixed a problem with the Return operator with no arguments. Since the AML 4215grammar for the byte encoding requires an operand for the Return opcode, the 4216compiler now emits a Return(Zero) for this case. An ACPI specification 4217update has been written for this case. 4218 4219For tables other than the DSDT, namepath optimization is automatically 4220disabled. This is because SSDTs can be loaded anywhere in the namespace, the 4221compiler has no knowledge of where, and thus cannot optimize namepaths. 4222 4223Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was 4224inadvertently omitted from the ACPI specification, and will require an 4225update to the spec. 4226 4227The source file scan for ASCII characters is now optional (-a). This change 4228was made because some vendors place non-ascii characters within comments. 4229However, the scan is simply a brute-force byte compare to ensure all 4230characters in the file are in the range 0x00 to 0x7F. 4231 4232Fixed a problem with the CondRefOf operator where the compiler was 4233inappropriately checking for the existence of the target. Since the point of 4234the operator is to check for the existence of the target at run-time, the 4235compiler no longer checks for the target existence. 4236 4237Fixed a problem where errors generated from the internal AML interpreter 4238during constant folding were not handled properly, causing a fault. 4239 4240Fixed a problem with overly aggressive range checking for the Stall 4241operator. The valid range (max 255) is now only checked if the operand is of 4242type Integer. All other operand types cannot be statically checked. 4243 4244Fixed a problem where control method references within the RefOf, DeRefOf, 4245and ObjectType operators were not treated properly. They are now treated as 4246actual references, not method invocations. 4247 4248Fixed and enhanced the "list namespace" option (-ln). This option was broken 4249a number of releases ago. 4250 4251Improved error handling for the Field, IndexField, and BankField operators. 4252The compiler now cleanly reports and recovers from errors in the field 4253component (FieldUnit) list. 4254 4255Fixed a disassembler problem where the optional ResourceDescriptor fields 4256TRS and TTP were not always handled correctly. 4257 4258Disassembler - Comments in output now use "//" instead of "/*" 4259 4260---------------------------------------- 426128 February 2005. Summary of changes for version 20050228: 4262 42631) ACPI CA Core Subsystem: 4264 4265Fixed a problem where the result of an Index() operator (an object 4266reference) must increment the reference count on the target object for the 4267life of the object reference. 4268 4269Implemented AML Interpreter and Debugger support for the new ACPI 3.0 4270Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and WordSpace 4271resource descriptors. 4272 4273Implemented support in the _OSI method for the ACPI 3.0 "Extended Address 4274Space Descriptor" string, indicating interpreter support for the descriptors 4275above. 4276 4277Implemented header support for the new ACPI 3.0 FADT flag bits. 4278 4279Implemented header support for the new ACPI 3.0 PCI Express bits for the PM1 4280status/enable registers. 4281 4282Updated header support for the MADT processor local Apic struct and MADT 4283platform interrupt source struct for new ACPI 3.0 fields. 4284 4285Implemented header support for the SRAT and SLIT ACPI tables. 4286 4287Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" flag 4288at runtime. 4289 4290Code and Data Size: Current and previous core subsystem library sizes are 4291shown below. These are the code and data sizes for the acpica.lib produced 4292by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4293any ACPI driver or OSPM code. The debug version of the code includes the 4294debug output trace mechanism and has a much larger code and data size. Note 4295that these values will vary depending on the efficiency of the compiler and 4296the compiler options used during generation. 4297 4298 Previous Release: 4299 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 4300 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 4301 Current Release: 4302 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4303 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 4304 4305 43062) iASL Compiler/Disassembler: 4307 4308Fixed a problem with the internal 64-bit String-to-integer conversion with 4309strings less than two characters long. 4310 4311Fixed a problem with constant folding where the result of the Index() 4312operator can not be considered a constant. This means that Index() cannot be 4313a type3 opcode and this will require an update to the ACPI specification. 4314 4315Disassembler: Implemented support for the TTP, MTP, and TRS resource 4316descriptor fields. These fields were inadvertently ignored and not output in 4317the disassembly of the resource descriptor. 4318 4319 4320 ---------------------------------------- 432111 February 2005. Summary of changes for version 20050211: 4322 43231) ACPI CA Core Subsystem: 4324 4325Implemented ACPI 3.0 support for implicit conversion within the Match() 4326operator. MatchObjects can now be of type integer, buffer, or string instead 4327of just type integer. Package elements are implicitly converted to the type 4328of the MatchObject. This change aligns the behavior of Match() with the 4329behavior of the other logical operators (LLess(), etc.) It also requires an 4330errata change to the ACPI specification as this support was intended for 4331ACPI 3.0, but was inadvertently omitted. 4332 4333Fixed a problem with the internal implicit "to buffer" conversion. Strings 4334that are converted to buffers will cause buffer truncation if the string is 4335smaller than the target buffer. Integers that are converted to buffers will 4336not cause buffer truncation, only zero extension (both as per the ACPI 4337spec.) The problem was introduced when code was added to truncate the 4338buffer, but this should not be performed in all cases, only the string case. 4339 4340Fixed a problem with the Buffer and Package operators where the interpreter 4341would get confused if two such operators were used as operands to an ASL 4342operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result 4343stack was not being popped after the execution of these operators, resulting 4344in an AE_NO_RETURN_VALUE exception. 4345 4346Fixed a problem with constructs of the form Store(Index(...),...). The 4347reference object returned from Index was inadvertently resolved to an actual 4348value. This problem was introduced in version 20050114 when the behavior of 4349Store() was modified to restrict the object types that can be used as the 4350source operand (to match the ACPI specification.) 4351 4352Reduced excessive stack use within the AcpiGetObjectInfo procedure. 4353 4354Added a fix to aclinux.h to allow generation of AcpiExec on Linux. 4355 4356Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct. 4357 4358Code and Data Size: Current and previous core subsystem library sizes are 4359shown below. These are the code and data sizes for the acpica.lib produced 4360by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4361any ACPI driver or OSPM code. The debug version of the code includes the 4362debug output trace mechanism and has a much larger code and data size. Note 4363that these values will vary depending on the efficiency of the compiler and 4364the compiler options used during generation. 4365 4366 Previous Release: 4367 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 4368 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 4369 Current Release: 4370 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 4371 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 4372 4373 43742) iASL Compiler/Disassembler: 4375 4376Fixed a code generation problem in the constant folding optimization code 4377where incorrect code was generated if a constant was reduced to a buffer 4378object (i.e., a reduced type 5 opcode.) 4379 4380Fixed a typechecking problem for the ToBuffer operator. Caused by an 4381incorrect return type in the internal opcode information table. 4382 4383---------------------------------------- 438425 January 2005. Summary of changes for version 20050125: 4385 43861) ACPI CA Core Subsystem: 4387 4388Fixed a recently introduced problem with the Global Lock where the 4389underlying semaphore was not created. This problem was introduced in 4390version 20050114, and caused an AE_AML_NO_OPERAND exception during an 4391Acquire() operation on _GL. 4392 4393The local object cache is now optional, and is disabled by default. Both 4394AcpiExec and the iASL compiler enable the cache because they run in user 4395mode and this enhances their performance. #define ACPI_ENABLE_OBJECT_CACHE 4396to enable the local cache. 4397 4398Fixed an issue in the internal function AcpiUtEvaluateObject concerning the 4399optional "implicit return" support where an error was returned if no return 4400object was expected, but one was implicitly returned. AE_OK is now returned 4401in this case and the implicitly returned object is deleted. 4402AcpiUtEvaluateObject is only occasionally used, and only to execute reserved 4403methods such as _STA and _INI where the return type is known up front. 4404 4405Fixed a few issues with the internal convert-to-integer code. It now returns 4406an error if an attempt is made to convert a null string, a string of only 4407blanks/tabs, or a zero-length buffer. This affects both implicit conversion 4408and explicit conversion via the ToInteger() operator. 4409 4410The internal debug code in AcpiUtAcquireMutex has been commented out. It is 4411not needed for normal operation and should increase the performance of the 4412entire subsystem. The code remains in case it is needed for debug purposes 4413again. 4414 4415The AcpiExec source and makefile are included in the Unix/Linux package for 4416the first time. 4417 4418Code and Data Size: Current and previous core subsystem library sizes are 4419shown below. These are the code and data sizes for the acpica.lib produced 4420by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4421any ACPI driver or OSPM code. The debug version of the code includes the 4422debug output trace mechanism and has a much larger code and data size. Note 4423that these values will vary depending on the efficiency of the compiler and 4424the compiler options used during generation. 4425 4426 Previous Release: 4427 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 4428 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 4429 Current Release: 4430 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 4431 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 4432 44332) iASL Compiler/Disassembler: 4434 4435Switch/Case support: A warning is now issued if the type of the Switch value 4436cannot be determined at compile time. For example, Switch(Arg0) will 4437generate the warning, and the type is assumed to be an integer. As per the 4438ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate the 4439warning. 4440 4441Switch/Case support: Implemented support for buffer and string objects as 4442the switch value. This is an ACPI 3.0 feature, now that LEqual supports 4443buffers and strings. 4444 4445Switch/Case support: The emitted code for the LEqual() comparisons now uses 4446the switch value as the first operand, not the second. The case value is now 4447the second operand, and this allows the case value to be implicitly 4448converted to the type of the switch value, not the other way around. 4449 4450Switch/Case support: Temporary variables are now emitted immediately within 4451the control method, not at the global level. This means that there are now 445236 temps available per-method, not 36 temps per-module as was the case with 4453the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.) 4454 4455---------------------------------------- 445614 January 2005. Summary of changes for version 20050114: 4457 4458Added 2005 copyright to all module headers. This affects every module in 4459the core subsystem, iASL compiler, and the utilities. 4460 44611) ACPI CA Core Subsystem: 4462 4463Fixed an issue with the String-to-Buffer conversion code where the string 4464null terminator was not included in the buffer after conversion, but there 4465is existing ASL that assumes the string null terminator is included. This is 4466the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was 4467introduced in the previous version when the code was updated to correctly 4468set the converted buffer size as per the ACPI specification. The ACPI spec 4469is ambiguous and will be updated to specify that the null terminator must be 4470included in the converted buffer. This also affects the ToBuffer() ASL 4471operator. 4472 4473Fixed a problem with the Mid() ASL/AML operator where it did not work 4474correctly on Buffer objects. Newly created sub-buffers were not being marked 4475as initialized. 4476 4477 4478Fixed a problem in AcpiTbFindTable where incorrect string compares were 4479performed on the OemId and OemTableId table header fields. These fields are 4480not null terminated, so strncmp is now used instead of strcmp. 4481 4482Implemented a restriction on the Store() ASL/AML operator to align the 4483behavior with the ACPI specification. Previously, any object could be used 4484as the source operand. Now, the only objects that may be used are Integers, 4485Buffers, Strings, Packages, Object References, and DDB Handles. If 4486necessary, the original behavior can be restored by enabling the 4487EnableInterpreterSlack flag. 4488 4489Enhanced the optional "implicit return" support to allow an implicit return 4490value from methods that are invoked externally via the AcpiEvaluateObject 4491interface. This enables implicit returns from the _STA and _INI methods, 4492for example. 4493 4494Changed the Revision() ASL/AML operator to return the current version of the 4495AML interpreter, in the YYYYMMDD format. Previously, it incorrectly returned 4496the supported ACPI version (This is the function of the _REV method). 4497 4498Updated the _REV predefined method to return the currently supported version 4499of ACPI, now 3. 4500 4501Implemented batch mode option for the AcpiExec utility (-b). 4502 4503Code and Data Size: Current and previous core subsystem library sizes are 4504shown below. These are the code and data sizes for the acpica.lib produced 4505by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4506any ACPI driver or OSPM code. The debug version of the code includes the 4507debug output trace mechanism and has a much larger code and data size. Note 4508that these values will vary depending on the efficiency of the compiler and 4509the compiler options used during generation. 4510 4511 Previous Release: 4512 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4513 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 4514 Current Release: 4515 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 4516 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 4517 4518---------------------------------------- 451910 December 2004. Summary of changes for version 20041210: 4520 4521ACPI 3.0 support is nearing completion in both the iASL compiler and the 4522ACPI CA core subsystem. 4523 45241) ACPI CA Core Subsystem: 4525 4526Fixed a problem in the ToDecimalString operator where the resulting string 4527length was incorrectly calculated. The length is now calculated exactly, 4528eliminating incorrect AE_STRING_LIMIT exceptions. 4529 4530Fixed a problem in the ToHexString operator to allow a maximum 200 character 4531string to be produced. 4532 4533Fixed a problem in the internal string-to-buffer and buffer-to-buffer copy 4534routine where the length of the resulting buffer was not truncated to the 4535new size (if the target buffer already existed). 4536 4537Code and Data Size: Current and previous core subsystem library sizes are 4538shown below. These are the code and data sizes for the acpica.lib produced 4539by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4540any ACPI driver or OSPM code. The debug version of the code includes the 4541debug output trace mechanism and has a much larger code and data size. Note 4542that these values will vary depending on the efficiency of the compiler and 4543the compiler options used during generation. 4544 4545 Previous Release: 4546 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4547 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 4548 Current Release: 4549 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4550 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 4551 4552 45532) iASL Compiler/Disassembler: 4554 4555Implemented the new ACPI 3.0 resource template macros - DWordSpace, 4556ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace. 4557Includes support in the disassembler. 4558 4559Implemented support for the new (ACPI 3.0) parameter to the Register macro, 4560AccessSize. 4561 4562Fixed a problem where the _HE resource name for the Interrupt macro was 4563referencing bit 0 instead of bit 1. 4564 4565Implemented check for maximum 255 interrupts in the Interrupt macro. 4566 4567Fixed a problem with the predefined resource descriptor names where 4568incorrect AML code was generated if the offset within the resource buffer 4569was 0 or 1. The optimizer shortened the AML code to a single byte opcode 4570but did not update the surrounding package lengths. 4571 4572Changes to the Dma macro: All channels within the channel list must be in 4573the range 0-7. Maximum 8 channels can be specified. BusMaster operand is 4574optional (default is BusMaster). 4575 4576Implemented check for maximum 7 data bytes for the VendorShort macro. 4577 4578The ReadWrite parameter is now optional for the Memory32 and similar macros. 4579 4580---------------------------------------- 458103 December 2004. Summary of changes for version 20041203: 4582 45831) ACPI CA Core Subsystem: 4584 4585The low-level field insertion/extraction code (exfldio) has been completely 4586rewritten to eliminate unnecessary complexity, bugs, and boundary 4587conditions. 4588 4589Fixed a problem in the ToInteger, ToBuffer, ToHexString, and ToDecimalString 4590operators where the input operand could be inadvertently deleted if no 4591conversion was necessary (e.g., if the input to ToInteger was an Integer 4592object.) 4593 4594Fixed a problem with the ToDecimalString and ToHexString where an incorrect 4595exception code was returned if the resulting string would be > 200 chars. 4596AE_STRING_LIMIT is now returned. 4597 4598Fixed a problem with the Concatenate operator where AE_OK was always 4599returned, even if the operation failed. 4600 4601Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128 4602semaphores to be allocated. 4603 4604Code and Data Size: Current and previous core subsystem library sizes are 4605shown below. These are the code and data sizes for the acpica.lib produced 4606by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4607any ACPI driver or OSPM code. The debug version of the code includes the 4608debug output trace mechanism and has a much larger code and data size. Note 4609that these values will vary depending on the efficiency of the compiler and 4610the compiler options used during generation. 4611 4612 Previous Release: 4613 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 4614 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 4615 Current Release: 4616 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4617 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 4618 4619 46202) iASL Compiler/Disassembler: 4621 4622Fixed typechecking for the ObjectType and SizeOf operators. Problem was 4623recently introduced in 20041119. 4624 4625Fixed a problem with the ToUUID macro where the upper nybble of each buffer 4626byte was inadvertently set to zero. 4627 4628---------------------------------------- 462919 November 2004. Summary of changes for version 20041119: 4630 46311) ACPI CA Core Subsystem: 4632 4633Fixed a problem in the internal ConvertToInteger routine where new integers 4634were not truncated to 32 bits for 32-bit ACPI tables. This routine converts 4635buffers and strings to integers. 4636 4637Implemented support to store a value to an Index() on a String object. This 4638is an ACPI 2.0 feature that had not yet been implemented. 4639 4640Implemented new behavior for storing objects to individual package elements 4641(via the Index() operator). The previous behavior was to invoke the implicit 4642conversion rules if an object was already present at the index. The new 4643behavior is to simply delete any existing object and directly store the new 4644object. Although the ACPI specification seems unclear on this subject, other 4645ACPI implementations behave in this manner. (This is the root of the 4646AE_BAD_HEX_CONSTANT issue.) 4647 4648Modified the RSDP memory scan mechanism to support the extended checksum for 4649ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid 4650RSDP signature is found with a valid checksum. 4651 4652Code and Data Size: Current and previous core subsystem library sizes are 4653shown below. These are the code and data sizes for the acpica.lib produced 4654by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4655any ACPI driver or OSPM code. The debug version of the code includes the 4656debug output trace mechanism and has a much larger code and data size. Note 4657that these values will vary depending on the efficiency of the compiler and 4658the compiler options used during generation. 4659 4660 Previous Release: 4661 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 4662 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 4663 Current Release: 4664 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 4665 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 4666 4667 46682) iASL Compiler/Disassembler: 4669 4670Fixed a missing semicolon in the aslcompiler.y file. 4671 4672---------------------------------------- 467305 November 2004. Summary of changes for version 20041105: 4674 46751) ACPI CA Core Subsystem: 4676 4677Implemented support for FADT revision 2. This was an interim table (between 4678ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register. 4679 4680Implemented optional support to allow uninitialized LocalX and ArgX 4681variables in a control method. The variables are initialized to an Integer 4682object with a value of zero. This support is enabled by setting the 4683AcpiGbl_EnableInterpreterSlack flag to TRUE. 4684 4685Implemented support for Integer objects for the SizeOf operator. Either 4 4686or 8 is returned, depending on the current integer size (32-bit or 64-bit, 4687depending on the parent table revision). 4688 4689Fixed a problem in the implementation of the SizeOf and ObjectType operators 4690where the operand was resolved to a value too early, causing incorrect 4691return values for some objects. 4692 4693Fixed some possible memory leaks during exceptional conditions. 4694 4695Code and Data Size: Current and previous core subsystem library sizes are 4696shown below. These are the code and data sizes for the acpica.lib produced 4697by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4698any ACPI driver or OSPM code. The debug version of the code includes the 4699debug output trace mechanism and has a much larger code and data size. Note 4700that these values will vary depending on the efficiency of the compiler and 4701the compiler options used during generation. 4702 4703 Previous Release: 4704 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 4705 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 4706 Current Release: 4707 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 4708 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 4709 4710 47112) iASL Compiler/Disassembler: 4712 4713Implemented support for all ACPI 3.0 reserved names and methods. 4714 4715Implemented all ACPI 3.0 grammar elements in the front-end, including 4716support for semicolons. 4717 4718Implemented the ACPI 3.0 Function() and ToUUID() macros 4719 4720Fixed a problem in the disassembler where a Scope() operator would not be 4721emitted properly if the target of the scope was in another table. 4722 4723---------------------------------------- 472415 October 2004. Summary of changes for version 20041015: 4725 4726Note: ACPI CA is currently undergoing an in-depth and complete formal 4727evaluation to test/verify the following areas. Other suggestions are 4728welcome. This will result in an increase in the frequency of releases and 4729the number of bug fixes in the next few months. 4730 - Functional tests for all ASL/AML operators 4731 - All implicit/explicit type conversions 4732 - Bit fields and operation regions 4733 - 64-bit math support and 32-bit-only "truncated" math support 4734 - Exceptional conditions, both compiler and interpreter 4735 - Dynamic object deletion and memory leaks 4736 - ACPI 3.0 support when implemented 4737 - External interfaces to the ACPI subsystem 4738 4739 47401) ACPI CA Core Subsystem: 4741 4742Fixed two alignment issues on 64-bit platforms - within debug statements in 4743AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the Address 4744field within the non-aligned ACPI generic address structure. 4745 4746Fixed a problem in the Increment and Decrement operators where incorrect 4747operand resolution could result in the inadvertent modification of the 4748original integer when the integer is passed into another method as an 4749argument and the arg is then incremented/decremented. 4750 4751Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-bit 4752BCD number were truncated during conversion. 4753 4754Fixed a problem in the ToDecimal operator where the length of the resulting 4755string could be set incorrectly too long if the input operand was a Buffer 4756object. 4757 4758Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte (0) 4759within a buffer would prematurely terminate a compare between buffer 4760objects. 4761 4762Added a check for string overflow (>200 characters as per the ACPI 4763specification) during the Concatenate operator with two string operands. 4764 4765Code and Data Size: Current and previous core subsystem library sizes are 4766shown below. These are the code and data sizes for the acpica.lib produced 4767by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4768any ACPI driver or OSPM code. The debug version of the code includes the 4769debug output trace mechanism and has a much larger code and data size. Note 4770that these values will vary depending on the efficiency of the compiler and 4771the compiler options used during generation. 4772 4773 Previous Release: 4774 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 4775 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 4776 Current Release: 4777 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 4778 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 4779 4780 4781 47822) iASL Compiler/Disassembler: 4783 4784Allow the use of the ObjectType operator on uninitialized Locals and Args 4785(returns 0 as per the ACPI specification). 4786 4787Fixed a problem where the compiler would fault if there was a syntax error 4788in the FieldName of all of the various CreateXXXField operators. 4789 4790Disallow the use of lower case letters within the EISAID macro, as per the 4791ACPI specification. All EISAID strings must be of the form "UUUNNNN" Where 4792U is an uppercase letter and N is a hex digit. 4793 4794 4795---------------------------------------- 479606 October 2004. Summary of changes for version 20041006: 4797 47981) ACPI CA Core Subsystem: 4799 4800Implemented support for the ACPI 3.0 Timer operator. This ASL function 4801implements a 64-bit timer with 100 nanosecond granularity. 4802 4803Defined a new OSL interface, AcpiOsGetTimer. This interface is used to 4804implement the ACPI 3.0 Timer operator. This allows the host OS to implement 4805the timer with the best clock available. Also, it keeps the core subsystem 4806out of the clock handling business, since the host OS (usually) performs 4807this function. 4808 4809Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write) 4810functions use a 64-bit address which is part of the packed ACPI Generic 4811Address Structure. Since the structure is non-aligned, the alignment macros 4812are now used to extract the address to a local variable before use. 4813 4814Fixed a problem where the ToInteger operator assumed all input strings were 4815hexadecimal. The operator now handles both decimal strings and hex strings 4816(prefixed with "0x"). 4817 4818Fixed a problem where the string length in the string object created as a 4819result of the internal ConvertToString procedure could be incorrect. This 4820potentially affected all implicit conversions and also the ToDecimalString 4821and ToHexString operators. 4822 4823Fixed two problems in the ToString operator. If the length parameter was 4824zero, an incorrect string object was created and the value of the input 4825length parameter was inadvertently changed from zero to Ones. 4826 4827Fixed a problem where the optional ResourceSource string in the ExtendedIRQ 4828resource macro was ignored. 4829 4830Simplified the interfaces to the internal division functions, reducing code 4831size and complexity. 4832 4833Code and Data Size: Current and previous core subsystem library sizes are 4834shown below. These are the code and data sizes for the acpica.lib produced 4835by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4836any ACPI driver or OSPM code. The debug version of the code includes the 4837debug output trace mechanism and has a much larger code and data size. Note 4838that these values will vary depending on the efficiency of the compiler and 4839the compiler options used during generation. 4840 4841 Previous Release: 4842 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 4843 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 4844 Current Release: 4845 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 4846 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 4847 4848 48492) iASL Compiler/Disassembler: 4850 4851Implemented support for the ACPI 3.0 Timer operator. 4852 4853Fixed a problem where the Default() operator was inadvertently ignored in a 4854Switch/Case block. This was a problem in the translation of the Switch 4855statement to If...Else pairs. 4856 4857Added support to allow a standalone Return operator, with no parentheses (or 4858operands). 4859 4860Fixed a problem with code generation for the ElseIf operator where the 4861translated Else...If parse tree was improperly constructed leading to the 4862loss of some code. 4863 4864---------------------------------------- 486522 September 2004. Summary of changes for version 20040922: 4866 48671) ACPI CA Core Subsystem: 4868 4869Fixed a problem with the implementation of the LNot() operator where "Ones" 4870was not returned for the TRUE case. Changed the code to return Ones instead 4871of (!Arg) which was usually 1. This change affects iASL constant folding for 4872this operator also. 4873 4874Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was not 4875initialized properly -- Now zero the entire buffer in this case where the 4876buffer already exists. 4877 4878Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32 4879Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all 4880related code considerably. This will require changes/updates to all OS 4881interface layers (OSLs.) 4882 4883Implemented a new external interface, AcpiInstallExceptionHandler, to allow 4884a system exception handler to be installed. This handler is invoked upon any 4885run-time exception that occurs during control method execution. 4886 4887Added support for the DSDT in AcpiTbFindTable. This allows the 4888DataTableRegion() operator to access the local copy of the DSDT. 4889 4890Code and Data Size: Current and previous core subsystem library sizes are 4891shown below. These are the code and data sizes for the acpica.lib produced 4892by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4893any ACPI driver or OSPM code. The debug version of the code includes the 4894debug output trace mechanism and has a much larger code and data size. Note 4895that these values will vary depending on the efficiency of the compiler and 4896the compiler options used during generation. 4897 4898 Previous Release: 4899 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 4900 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 4901 Current Release: 4902 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 4903 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 4904 4905 49062) iASL Compiler/Disassembler: 4907 4908Fixed a problem with constant folding and the LNot operator. LNot was 4909returning 1 in the TRUE case, not Ones as per the ACPI specification. This 4910could result in the generation of an incorrect folded/reduced constant. 4911 4912End-Of-File is now allowed within a "//"-style comment. A parse error no 4913longer occurs if such a comment is at the very end of the input ASL source 4914file. 4915 4916Implemented the "-r" option to override the Revision in the table header. 4917The initial use of this option will be to simplify the evaluation of the AML 4918interpreter by allowing a single ASL source module to be compiled for either 491932-bit or 64-bit integers. 4920 4921 4922---------------------------------------- 492327 August 2004. Summary of changes for version 20040827: 4924 49251) ACPI CA Core Subsystem: 4926 4927- Implemented support for implicit object conversion in the non-numeric 4928logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, and 4929LNotEqual.) Any combination of Integers/Strings/Buffers may now be used; 4930the second operand is implicitly converted on the fly to match the type of 4931the first operand. For example: 4932 4933 LEqual (Source1, Source2) 4934 4935Source1 and Source2 must each evaluate to an integer, a string, or a buffer. 4936The data type of Source1 dictates the required type of Source2. Source2 is 4937implicitly converted if necessary to match the type of Source1. 4938 4939- Updated and corrected the behavior of the string conversion support. The 4940rules concerning conversion of buffers to strings (according to the ACPI 4941specification) are as follows: 4942 4943ToDecimalString - explicit byte-wise conversion of buffer to string of 4944decimal values (0-255) separated by commas. ToHexString - explicit byte-wise 4945conversion of buffer to string of hex values (0-FF) separated by commas. 4946ToString - explicit byte-wise conversion of buffer to string. Byte-by-byte 4947copy with no transform except NULL terminated. Any other implicit buffer-to- 4948string conversion - byte-wise conversion of buffer to string of hex values 4949(0-FF) separated by spaces. 4950 4951- Fixed typo in definition of AcpiGbl_EnableInterpreterSlack. 4952 4953- Fixed a problem in AcpiNsGetPathnameLength where the returned length was 4954one byte too short in the case of a node in the root scope. This could 4955cause a fault during debug output. 4956 4957- Code and Data Size: Current and previous core subsystem library sizes are 4958shown below. These are the code and data sizes for the acpica.lib produced 4959by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4960any ACPI driver or OSPM code. The debug version of the code includes the 4961debug output trace mechanism and has a much larger code and data size. Note 4962that these values will vary depending on the efficiency of the compiler and 4963the compiler options used during generation. 4964 4965 Previous Release: 4966 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 4967 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 4968 Current Release: 4969 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 4970 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 4971 4972 49732) iASL Compiler/Disassembler: 4974 4975- Fixed a Linux generation error. 4976 4977 4978---------------------------------------- 497916 August 2004. Summary of changes for version 20040816: 4980 49811) ACPI CA Core Subsystem: 4982 4983Designed and implemented support within the AML interpreter for the so- 4984called "implicit return". This support returns the result of the last ASL 4985operation within a control method, in the absence of an explicit Return() 4986operator. A few machines depend on this behavior, even though it is not 4987explicitly supported by the ASL language. It is optional support that can 4988be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag. 4989 4990Removed support for the PCI_Config address space from the internal low level 4991hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This 4992support was not used internally, and would not work correctly anyway because 4993the PCI bus number and segment number were not supported. There are 4994separate interfaces for PCI configuration space access because of the unique 4995interface. 4996 4997Code and Data Size: Current and previous core subsystem library sizes are 4998shown below. These are the code and data sizes for the acpica.lib produced 4999by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5000any ACPI driver or OSPM code. The debug version of the code includes the 5001debug output trace mechanism and has a much larger code and data size. Note 5002that these values will vary depending on the efficiency of the compiler and 5003the compiler options used during generation. 5004 5005 Previous Release: 5006 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 5007 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 5008 Current Release: 5009 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 5010 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 5011 5012 50132) iASL Compiler/Disassembler: 5014 5015Fixed a problem where constants in ASL expressions at the root level (not 5016within a control method) could be inadvertently truncated during code 5017generation. This problem was introduced in the 20040715 release. 5018 5019 5020---------------------------------------- 502115 July 2004. Summary of changes for version 20040715: 5022 50231) ACPI CA Core Subsystem: 5024 5025Restructured the internal HW GPE interfaces to pass/track the current state 5026of interrupts (enabled/disabled) in order to avoid possible deadlock and 5027increase flexibility of the interfaces. 5028 5029Implemented a "lexicographical compare" for String and Buffer objects within 5030the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -- 5031as per further clarification to the ACPI specification. Behavior is similar 5032to C library "strcmp". 5033 5034Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable 5035external function. In the 32-bit non-debug case, the stack use has been 5036reduced from 168 bytes to 32 bytes. 5037 5038Deployed a new run-time configuration flag, AcpiGbl_EnableInterpreterSlack, 5039whose purpose is to allow the AML interpreter to forgive certain bad AML 5040constructs. Default setting is FALSE. 5041 5042Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field IO 5043support code. If enabled, it allows field access to go beyond the end of a 5044region definition if the field is within the region length rounded up to the 5045next access width boundary (a common coding error.) 5046 5047Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to 5048ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also, these 5049symbols are lowercased by the latest version of the AcpiSrc tool. 5050 5051The prototypes for the PCI interfaces in acpiosxf.h have been updated to 5052rename "Register" to simply "Reg" to prevent certain compilers from 5053complaining. 5054 5055Code and Data Size: Current and previous core subsystem library sizes are 5056shown below. These are the code and data sizes for the acpica.lib produced 5057by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5058any ACPI driver or OSPM code. The debug version of the code includes the 5059debug output trace mechanism and has a much larger code and data size. Note 5060that these values will vary depending on the efficiency of the compiler and 5061the compiler options used during generation. 5062 5063 Previous Release: 5064 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 5065 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 5066 Current Release: 5067 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 5068 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 5069 5070 50712) iASL Compiler/Disassembler: 5072 5073Implemented full support for Package objects within the Case() operator. 5074Note: The Break() operator is currently not supported within Case blocks 5075(TermLists) as there is some question about backward compatibility with ACPI 50761.0 interpreters. 5077 5078 5079Fixed a problem where complex terms were not supported properly within the 5080Switch() operator. 5081 5082Eliminated extraneous warning for compiler-emitted reserved names of the 5083form "_T_x". (Used in Switch/Case operators.) 5084 5085Eliminated optimization messages for "_T_x" objects and small constants 5086within the DefinitionBlock operator. 5087 5088 5089---------------------------------------- 509015 June 2004. Summary of changes for version 20040615: 5091 50921) ACPI CA Core Subsystem: 5093 5094Implemented support for Buffer and String objects (as per ACPI 2.0) for the 5095following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 5096LLessEqual. 5097 5098All directory names in the entire source package are lower case, as they 5099were in earlier releases. 5100 5101Implemented "Disassemble" command in the AML debugger that will disassemble 5102a single control method. 5103 5104Code and Data Size: Current and previous core subsystem library sizes are 5105shown below. These are the code and data sizes for the acpica.lib produced 5106by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5107any ACPI driver or OSPM code. The debug version of the code includes the 5108debug output trace mechanism and has a much larger code and data size. Note 5109that these values will vary depending on the efficiency of the compiler and 5110the compiler options used during generation. 5111 5112 Previous Release: 5113 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 5114 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 5115 5116 Current Release: 5117 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 5118 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 5119 5120 51212) iASL Compiler/Disassembler: 5122 5123Implemented support for Buffer and String objects (as per ACPI 2.0) for the 5124following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 5125LLessEqual. 5126 5127All directory names in the entire source package are lower case, as they 5128were in earlier releases. 5129 5130Fixed a fault when using the -g or -d<nofilename> options if the FADT was 5131not found. 5132 5133Fixed an issue with the Windows version of the compiler where later versions 5134of Windows place the FADT in the registry under the name "FADT" and not 5135"FACP" as earlier versions did. This applies when using the -g or - 5136d<nofilename> options. The compiler now looks for both strings as 5137necessary. 5138 5139Fixed a problem with compiler namepath optimization where a namepath within 5140the Scope() operator could not be optimized if the namepath was a subpath of 5141the current scope path. 5142 5143---------------------------------------- 514427 May 2004. Summary of changes for version 20040527: 5145 51461) ACPI CA Core Subsystem: 5147 5148Completed a new design and implementation for EBDA (Extended BIOS Data Area) 5149support in the RSDP scan code. The original code improperly scanned for the 5150EBDA by simply scanning from memory location 0 to 0x400. The correct method 5151is to first obtain the EBDA pointer from within the BIOS data area, then 5152scan 1K of memory starting at the EBDA pointer. There appear to be few if 5153any machines that place the RSDP in the EBDA, however. 5154 5155Integrated a fix for a possible fault during evaluation of BufferField 5156arguments. Obsolete code that was causing the problem was removed. 5157 5158Found and fixed a problem in the Field Support Code where data could be 5159corrupted on a bit field read that starts on an aligned boundary but does 5160not end on an aligned boundary. Merged the read/write "datum length" 5161calculation code into a common procedure. 5162 5163Rolled in a couple of changes to the FreeBSD-specific header. 5164 5165 5166Code and Data Size: Current and previous core subsystem library sizes are 5167shown below. These are the code and data sizes for the acpica.lib produced 5168by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5169any ACPI driver or OSPM code. The debug version of the code includes the 5170debug output trace mechanism and has a much larger code and data size. Note 5171that these values will vary depending on the efficiency of the compiler and 5172the compiler options used during generation. 5173 5174 Previous Release: 5175 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 5176 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 5177 Current Release: 5178 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 5179 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 5180 5181 51822) iASL Compiler/Disassembler: 5183 5184Fixed a generation warning produced by some overly-verbose compilers for a 518564-bit constant. 5186 5187---------------------------------------- 518814 May 2004. Summary of changes for version 20040514: 5189 51901) ACPI CA Core Subsystem: 5191 5192Fixed a problem where hardware GPE enable bits sometimes not set properly 5193during and after GPE method execution. Result of 04/27 changes. 5194 5195Removed extra "clear all GPEs" when sleeping/waking. 5196 5197Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single 5198AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above to 5199the new AcpiEv* calls as appropriate. 5200 5201ACPI_OS_NAME was removed from the OS-specific headers. The default name is 5202now "Microsoft Windows NT" for maximum compatibility. However this can be 5203changed by modifying the acconfig.h file. 5204 5205Allow a single invocation of AcpiInstallNotifyHandler for a handler that 5206traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag. 5207 5208Run _INI methods on ThermalZone objects. This is against the ACPI 5209specification, but there is apparently ASL code in the field that has these 5210_INI methods, and apparently "other" AML interpreters execute them. 5211 5212Performed a full 16/32/64 bit lint that resulted in some small changes. 5213 5214Added a sleep simulation command to the AML debugger to test sleep code. 5215 5216Code and Data Size: Current and previous core subsystem library sizes are 5217shown below. These are the code and data sizes for the acpica.lib produced 5218by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5219any ACPI driver or OSPM code. The debug version of the code includes the 5220debug output trace mechanism and has a much larger code and data size. Note 5221that these values will vary depending on the efficiency of the compiler and 5222the compiler options used during generation. 5223 5224 Previous Release: 5225 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 5226 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 5227 Current Release: 5228 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 5229 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 5230 5231---------------------------------------- 523227 April 2004. Summary of changes for version 20040427: 5233 52341) ACPI CA Core Subsystem: 5235 5236Completed a major overhaul of the GPE handling within ACPI CA. There are 5237now three types of GPEs: wake-only, runtime-only, and combination wake/run. 5238The only GPEs allowed to be combination wake/run are for button-style 5239devices such as a control-method power button, control-method sleep button, 5240or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are not 5241referenced by any _PRW methods are marked for "runtime" and hardware 5242enabled. Any GPE that is referenced by a _PRW method is marked for "wake" 5243(and disabled at runtime). However, at sleep time, only those GPEs that 5244have been specifically enabled for wake via the AcpiEnableGpe interface will 5245actually be hardware enabled. 5246 5247A new external interface has been added, AcpiSetGpeType(), that is meant to 5248be used by device drivers to force a GPE to a particular type. It will be 5249especially useful for the drivers for the button devices mentioned above. 5250 5251Completed restructuring of the ACPI CA initialization sequence so that 5252default operation region handlers are installed before GPEs are initialized 5253and the _PRW methods are executed. This will prevent errors when the _PRW 5254methods attempt to access system memory or I/O space. 5255 5256GPE enable/disable no longer reads the GPE enable register. We now keep the 5257enable info for runtime and wake separate and in the GPE_EVENT_INFO. We 5258thus no longer depend on the hardware to maintain these bits. 5259 5260Always clear the wake status and fixed/GPE status bits before sleep, even 5261for state S5. 5262 5263Improved the AML debugger output for displaying the GPE blocks and their 5264current status. 5265 5266Added new strings for the _OSI method, of the form "Windows 2001 SPx" where 5267x = 0,1,2,3,4. 5268 5269Fixed a problem where the physical address was incorrectly calculated when 5270the Load() operator was used to directly load from an Operation Region (vs. 5271loading from a Field object.) Also added check for minimum table length for 5272this case. 5273 5274Fix for multiple mutex acquisition. Restore original thread SyncLevel on 5275mutex release. 5276 5277Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for 5278consistency with the other fields returned. 5279 5280Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such 5281structure for each GPE in the system, so the size of this structure is 5282important. 5283 5284CPU stack requirement reduction: Cleaned up the method execution and object 5285evaluation paths so that now a parameter structure is passed, instead of 5286copying the various method parameters over and over again. 5287 5288In evregion.c: Correctly exit and reenter the interpreter region if and 5289only if dispatching an operation region request to a user-installed handler. 5290Do not exit/reenter when dispatching to a default handler (e.g., default 5291system memory or I/O handlers) 5292 5293 5294Notes for updating drivers for the new GPE support. The following changes 5295must be made to ACPI-related device drivers that are attached to one or more 5296GPEs: (This information will be added to the ACPI CA Programmer Reference.) 5297 52981) AcpiInstallGpeHandler no longer automatically enables the GPE, you must 5299explicitly call AcpiEnableGpe. 53002) There is a new interface called AcpiSetGpeType. This should be called 5301before enabling the GPE. Also, this interface will automatically disable 5302the GPE if it is currently enabled. 53033) AcpiEnableGpe no longer supports a GPE type flag. 5304 5305Specific drivers that must be changed: 53061) EC driver: 5307 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED, 5308AeGpeHandler, NULL); 5309 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME); 5310 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR); 5311 53122) Button Drivers (Power, Lid, Sleep): 5313Run _PRW method under parent device 5314If _PRW exists: /* This is a control-method button */ 5315 Extract GPE number and possibly GpeDevice 5316 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN); 5317 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR); 5318 5319For all other devices that have _PRWs, we automatically set the GPE type to 5320ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. This 5321must be done on a selective basis, usually requiring some kind of user app 5322to allow the user to pick the wake devices. 5323 5324 5325Code and Data Size: Current and previous core subsystem library sizes are 5326shown below. These are the code and data sizes for the acpica.lib produced 5327by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5328any ACPI driver or OSPM code. The debug version of the code includes the 5329debug output trace mechanism and has a much larger code and data size. Note 5330that these values will vary depending on the efficiency of the compiler and 5331the compiler options used during generation. 5332 5333 Previous Release: 5334 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 5335 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 5336 Current Release: 5337 5338 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 5339 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 5340 5341 5342 5343---------------------------------------- 534402 April 2004. Summary of changes for version 20040402: 5345 53461) ACPI CA Core Subsystem: 5347 5348Fixed an interpreter problem where an indirect store through an ArgX 5349parameter was incorrectly applying the "implicit conversion rules" during 5350the store. From the ACPI specification: "If the target is a method local or 5351argument (LocalX or ArgX), no conversion is performed and the result is 5352stored directly to the target". The new behavior is to disable implicit 5353conversion during ALL stores to an ArgX. 5354 5355Changed the behavior of the _PRW method scan to ignore any and all errors 5356returned by a given _PRW. This prevents the scan from aborting from the 5357failure of any single _PRW. 5358 5359Moved the runtime configuration parameters from the global init procedure to 5360static variables in acglobal.h. This will allow the host to override the 5361default values easily. 5362 5363Code and Data Size: Current and previous core subsystem library sizes are 5364shown below. These are the code and data sizes for the acpica.lib produced 5365by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5366any ACPI driver or OSPM code. The debug version of the code includes the 5367debug output trace mechanism and has a much larger code and data size. Note 5368that these values will vary depending on the efficiency of the compiler and 5369the compiler options used during generation. 5370 5371 Previous Release: 5372 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 5373 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 5374 Current Release: 5375 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 5376 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 5377 5378 53792) iASL Compiler/Disassembler: 5380 5381iASL now fully disassembles SSDTs. However, External() statements are not 5382generated automatically for unresolved symbols at this time. This is a 5383planned feature for future implementation. 5384 5385Fixed a scoping problem in the disassembler that occurs when the type of the 5386target of a Scope() operator is overridden. This problem caused an 5387incorrectly nested internal namespace to be constructed. 5388 5389Any warnings or errors that are emitted during disassembly are now commented 5390out automatically so that the resulting file can be recompiled without any 5391hand editing. 5392 5393---------------------------------------- 539426 March 2004. Summary of changes for version 20040326: 5395 53961) ACPI CA Core Subsystem: 5397 5398Implemented support for "wake" GPEs via interaction between GPEs and the 5399_PRW methods. Every GPE that is pointed to by one or more _PRWs is 5400identified as a WAKE GPE and by default will no longer be enabled at 5401runtime. Previously, we were blindly enabling all GPEs with a corresponding 5402_Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway. We 5403believe this has been the cause of thousands of "spurious" GPEs on some 5404systems. 5405 5406This new GPE behavior is can be reverted to the original behavior (enable 5407ALL GPEs at runtime) via a runtime flag. 5408 5409Fixed a problem where aliased control methods could not access objects 5410properly. The proper scope within the namespace was not initialized 5411(transferred to the target of the aliased method) before executing the 5412target method. 5413 5414Fixed a potential race condition on internal object deletion on the return 5415object in AcpiEvaluateObject. 5416 5417Integrated a fix for resource descriptors where both _MEM and _MTP were 5418being extracted instead of just _MEM. (i.e. bitmask was incorrectly too 5419wide, 0x0F instead of 0x03.) 5420 5421Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, preventing a 5422fault in some cases. 5423 5424Updated Notify() values for debug statements in evmisc.c 5425 5426Return proper status from AcpiUtMutexInitialize, not just simply AE_OK. 5427 5428Code and Data Size: Current and previous core subsystem library sizes are 5429shown below. These are the code and data sizes for the acpica.lib produced 5430by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5431any ACPI driver or OSPM code. The debug version of the code includes the 5432debug output trace mechanism and has a much larger code and data size. Note 5433that these values will vary depending on the efficiency of the compiler and 5434the compiler options used during generation. 5435 5436 Previous Release: 5437 5438 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 5439 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 5440 Current Release: 5441 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 5442 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 5443 5444---------------------------------------- 544511 March 2004. Summary of changes for version 20040311: 5446 54471) ACPI CA Core Subsystem: 5448 5449Fixed a problem where errors occurring during the parse phase of control 5450method execution did not abort cleanly. For example, objects created and 5451installed in the namespace were not deleted. This caused all subsequent 5452invocations of the method to return the AE_ALREADY_EXISTS exception. 5453 5454Implemented a mechanism to force a control method to "Serialized" execution 5455if the method attempts to create namespace objects. (The root of the 5456AE_ALREADY_EXISTS problem.) 5457 5458Implemented support for the predefined _OSI "internal" control method. 5459Initial supported strings are "Linux", "Windows 2000", "Windows 2001", and 5460"Windows 2001.1", and can be easily upgraded for new strings as necessary. 5461This feature will allow "other" operating systems to execute the fully 5462tested, "Windows" code path through the ASL code 5463 5464Global Lock Support: Now allows multiple acquires and releases with any 5465internal thread. Removed concept of "owning thread" for this special mutex. 5466 5467Fixed two functions that were inappropriately declaring large objects on the 5468CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage during 5469method execution considerably. 5470 5471Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the 5472S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT. 5473 5474Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs 5475defined on the machine. 5476 5477Implemented two runtime options: One to force all control method execution 5478to "Serialized" to mimic Windows behavior, another to disable _OSI support 5479if it causes problems on a given machine. 5480 5481Code and Data Size: Current and previous core subsystem library sizes are 5482shown below. These are the code and data sizes for the acpica.lib produced 5483by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5484any ACPI driver or OSPM code. The debug version of the code includes the 5485debug output trace mechanism and has a much larger code and data size. Note 5486that these values will vary depending on the efficiency of the compiler and 5487the compiler options used during generation. 5488 5489 Previous Release: 5490 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 5491 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 5492 Current Release: 5493 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 5494 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 5495 54962) iASL Compiler/Disassembler: 5497 5498Fixed an array size problem for FreeBSD that would cause the compiler to 5499fault. 5500 5501---------------------------------------- 550220 February 2004. Summary of changes for version 20040220: 5503 5504 55051) ACPI CA Core Subsystem: 5506 5507Implemented execution of _SxD methods for Device objects in the 5508GetObjectInfo interface. 5509 5510Fixed calls to _SST method to pass the correct arguments. 5511 5512Added a call to _SST on wake to restore to "working" state. 5513 5514Check for End-Of-Buffer failure case in the WalkResources interface. 5515 5516Integrated fix for 64-bit alignment issue in acglobal.h by moving two 5517structures to the beginning of the file. 5518 5519After wake, clear GPE status register(s) before enabling GPEs. 5520 5521After wake, clear/enable power button. (Perhaps we should clear/enable all 5522fixed events upon wake.) 5523 5524Fixed a couple of possible memory leaks in the Namespace manager. 5525 5526Integrated latest acnetbsd.h file. 5527 5528---------------------------------------- 552911 February 2004. Summary of changes for version 20040211: 5530 5531 55321) ACPI CA Core Subsystem: 5533 5534Completed investigation and implementation of the call-by-reference 5535mechanism for control method arguments. 5536 5537Fixed a problem where a store of an object into an indexed package could 5538fail if the store occurs within a different method than the method that 5539created the package. 5540 5541Fixed a problem where the ToDecimal operator could return incorrect results. 5542 5543Fixed a problem where the CopyObject operator could fail on some of the more 5544obscure objects (e.g., Reference objects.) 5545 5546Improved the output of the Debug object to display buffer, package, and 5547index objects. 5548 5549Fixed a problem where constructs of the form "RefOf (ArgX)" did not return 5550the expected result. 5551 5552Added permanent ACPI_REPORT_ERROR macros for all instances of the 5553ACPI_AML_INTERNAL exception. 5554 5555Integrated latest version of acfreebsd.h 5556 5557---------------------------------------- 555816 January 2004. Summary of changes for version 20040116: 5559 5560The purpose of this release is primarily to update the copyright years in 5561each module, thus causing a huge number of diffs. There are a few small 5562functional changes, however. 5563 55641) ACPI CA Core Subsystem: 5565 5566Improved error messages when there is a problem finding one or more of the 5567required base ACPI tables 5568 5569Reintroduced the definition of APIC_HEADER in actbl.h 5570 5571Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h) 5572 5573Removed extraneous reference to NewObj in dsmthdat.c 5574 55752) iASL compiler 5576 5577Fixed a problem introduced in December that disabled the correct disassembly 5578of Resource Templates 5579 5580 5581---------------------------------------- 558203 December 2003. Summary of changes for version 20031203: 5583 55841) ACPI CA Core Subsystem: 5585 5586Changed the initialization of Operation Regions during subsystem 5587init to perform two entire walks of the ACPI namespace; The first 5588to initialize the regions themselves, the second to execute the 5589_REG methods. This fixed some interdependencies across _REG 5590methods found on some machines. 5591 5592Fixed a problem where a Store(Local0, Local1) could simply update 5593the object reference count, and not create a new copy of the 5594object if the Local1 is uninitialized. 5595 5596Implemented support for the _SST reserved method during sleep 5597transitions. 5598 5599Implemented support to clear the SLP_TYP and SLP_EN bits when 5600waking up, this is apparently required by some machines. 5601 5602When sleeping, clear the wake status only if SleepState is not S5. 5603 5604Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect 5605pointer arithmetic advanced a string pointer too far. 5606 5607Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer 5608could be returned if the requested table has not been loaded. 5609 5610Within the support for IRQ resources, restructured the handling of 5611the active and edge/level bits. 5612 5613Fixed a few problems in AcpiPsxExecute() where memory could be 5614leaked under certain error conditions. 5615 5616Improved error messages for the cases where the ACPI mode could 5617not be entered. 5618 5619Code and Data Size: Current and previous core subsystem library 5620sizes are shown below. These are the code and data sizes for the 5621acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 5622these values do not include any ACPI driver or OSPM code. The 5623debug version of the code includes the debug output trace 5624mechanism and has a much larger code and data size. Note that 5625these values will vary depending on the efficiency of the compiler 5626and the compiler options used during generation. 5627 5628 Previous Release (20031029): 5629 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 5630 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 5631 Current Release: 5632 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 5633 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 5634 56352) iASL Compiler/Disassembler: 5636 5637Implemented a fix for the iASL disassembler where a bad index was 5638generated. This was most noticeable on 64-bit platforms 5639 5640 5641---------------------------------------- 564229 October 2003. Summary of changes for version 20031029: 5643 56441) ACPI CA Core Subsystem: 5645 5646 5647Fixed a problem where a level-triggered GPE with an associated 5648_Lxx control method was incorrectly cleared twice. 5649 5650Fixed a problem with the Field support code where an access can 5651occur beyond the end-of-region if the field is non-aligned but 5652extends to the very end of the parent region (resulted in an 5653AE_AML_REGION_LIMIT exception.) 5654 5655Fixed a problem with ACPI Fixed Events where an RT Clock handler 5656would not get invoked on an RTC event. The RTC event bitmasks for 5657the PM1 registers were not being initialized properly. 5658 5659Implemented support for executing _STA and _INI methods for 5660Processor objects. Although this is currently not part of the 5661ACPI specification, there is existing ASL code that depends on the 5662init-time execution of these methods. 5663 5664Implemented and deployed a GetDescriptorName function to decode 5665the various types of internal descriptors. Guards against null 5666descriptors during debug output also. 5667 5668Implemented and deployed a GetNodeName function to extract the 4- 5669character namespace node name. This function simplifies the debug 5670and error output, as well as guarding against null pointers during 5671output. 5672 5673Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to 5674simplify the debug and error output of 64-bit integers. This 5675macro replaces the HIDWORD and LODWORD macros for dumping these 5676integers. 5677 5678Updated the implementation of the Stall() operator to only call 5679AcpiOsStall(), and also return an error if the operand is larger 5680than 255. This preserves the required behavior of not 5681relinquishing the processor, as would happen if AcpiOsSleep() was 5682called for "long stalls". 5683 5684Constructs of the form "Store(LocalX,LocalX)" where LocalX is not 5685initialized are now treated as NOOPs. 5686 5687Cleaned up a handful of warnings during 64-bit generation. 5688 5689Fixed a reported error where and incorrect GPE number was passed 5690to the GPE dispatch handler. This value is only used for error 5691output, however. Used this opportunity to clean up and streamline 5692the GPE dispatch code. 5693 5694Code and Data Size: Current and previous core subsystem library 5695sizes are shown below. These are the code and data sizes for the 5696acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 5697these values do not include any ACPI driver or OSPM code. The 5698 5699debug version of the code includes the debug output trace 5700mechanism and has a much larger code and data size. Note that 5701these values will vary depending on the efficiency of the compiler 5702and the compiler options used during generation. 5703 5704 Previous Release (20031002): 5705 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 5706 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 5707 Current Release: 5708 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 5709 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 5710 5711 57122) iASL Compiler/Disassembler: 5713 5714Updated the iASL compiler to return an error if the operand to the 5715Stall() operator is larger than 255. 5716 5717 5718---------------------------------------- 571902 October 2003. Summary of changes for version 20031002: 5720 5721 57221) ACPI CA Core Subsystem: 5723 5724Fixed a problem with Index Fields where the index was not 5725incremented for fields that require multiple writes to the 5726index/data registers (Fields that are wider than the data 5727register.) 5728 5729Fixed a problem with all Field objects where a write could go 5730beyond the end-of-field if the field was larger than the access 5731granularity and therefore required multiple writes to complete the 5732request. An extra write beyond the end of the field could happen 5733inadvertently. 5734 5735Fixed a problem with Index Fields where a BUFFER_OVERFLOW error 5736would incorrectly be returned if the width of the Data Register 5737was larger than the specified field access width. 5738 5739Completed fixes for LoadTable() and Unload() and verified their 5740operation. Implemented full support for the "DdbHandle" object 5741throughout the ACPI CA subsystem. 5742 5743Implemented full support for the MADT and ECDT tables in the ACPI 5744CA header files. Even though these tables are not directly 5745consumed by ACPI CA, the header definitions are useful for ACPI 5746device drivers. 5747 5748Integrated resource descriptor fixes posted to the Linux ACPI 5749list. This included checks for minimum descriptor length, and 5750support for trailing NULL strings within descriptors that have 5751optional string elements. 5752 5753Code and Data Size: Current and previous core subsystem library 5754sizes are shown below. These are the code and data sizes for the 5755acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 5756these values do not include any ACPI driver or OSPM code. The 5757debug version of the code includes the debug output trace 5758mechanism and has a much larger code and data size. Note that 5759these values will vary depending on the efficiency of the compiler 5760and the compiler options used during generation. 5761 5762 Previous Release (20030918): 5763 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 5764 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 5765 Current Release: 5766 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 5767 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 5768 5769 57702) iASL Compiler: 5771 5772Implemented detection of non-ASCII characters within the input 5773source ASL file. This catches attempts to compile binary (AML) 5774files early in the compile, with an informative error message. 5775 5776Fixed a problem where the disassembler would fault if the output 5777filename could not be generated or if the output file could not be 5778opened. 5779 5780---------------------------------------- 578118 September 2003. Summary of changes for version 20030918: 5782 5783 57841) ACPI CA Core Subsystem: 5785 5786Found and fixed a longstanding problem with the late execution of 5787the various deferred AML opcodes (such as Operation Regions, 5788Buffer Fields, Buffers, and Packages). If the name string 5789specified for the name of the new object placed the object in a 5790scope other than the current scope, the initialization/execution 5791of the opcode failed. The solution to this problem was to 5792implement a mechanism where the late execution of such opcodes 5793does not attempt to lookup/create the name a second time in an 5794incorrect scope. This fixes the "region size computed 5795incorrectly" problem. 5796 5797Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a 5798Global Lock AE_BAD_PARAMETER error. 5799 5800Fixed several 64-bit issues with prototypes, casting and data 5801types. 5802 5803Removed duplicate prototype from acdisasm.h 5804 5805Fixed an issue involving EC Operation Region Detach (Shaohua Li) 5806 5807Code and Data Size: Current and previous core subsystem library 5808sizes are shown below. These are the code and data sizes for the 5809acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 5810these values do not include any ACPI driver or OSPM code. The 5811debug version of the code includes the debug output trace 5812mechanism and has a much larger code and data size. Note that 5813these values will vary depending on the efficiency of the compiler 5814and the compiler options used during generation. 5815 5816 Previous Release: 5817 5818 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 5819 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 5820 Current Release: 5821 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 5822 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 5823 5824 58252) Linux: 5826 5827Fixed the AcpiOsSleep implementation in osunixxf.c to pass the 5828correct sleep time in seconds. 5829 5830---------------------------------------- 583114 July 2003. Summary of changes for version 20030619: 5832 58331) ACPI CA Core Subsystem: 5834 5835Parse SSDTs in order discovered, as opposed to reverse order 5836(Hrvoje Habjanic) 5837 5838Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas 5839Klausner, 5840 Nate Lawson) 5841 5842 58432) Linux: 5844 5845Dynamically allocate SDT list (suggested by Andi Kleen) 5846 5847proc function return value cleanups (Andi Kleen) 5848 5849Correctly handle NMI watchdog during long stalls (Andrew Morton) 5850 5851Make it so acpismp=force works (reported by Andrew Morton) 5852 5853 5854---------------------------------------- 585519 June 2003. Summary of changes for version 20030619: 5856 58571) ACPI CA Core Subsystem: 5858 5859Fix To/FromBCD, eliminating the need for an arch-specific #define. 5860 5861Do not acquire a semaphore in the S5 shutdown path. 5862 5863Fix ex_digits_needed for 0. (Takayoshi Kochi) 5864 5865Fix sleep/stall code reversal. (Andi Kleen) 5866 5867Revert a change having to do with control method calling 5868semantics. 5869 58702) Linux: 5871 5872acpiphp update (Takayoshi Kochi) 5873 5874Export acpi_disabled for sonypi (Stelian Pop) 5875 5876Mention acpismp=force in config help 5877 5878Re-add acpitable.c and acpismp=force. This improves backwards 5879 5880compatibility and also cleans up the code to a significant degree. 5881 5882Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge) 5883 5884---------------------------------------- 588522 May 2003. Summary of changes for version 20030522: 5886 58871) ACPI CA Core Subsystem: 5888 5889Found and fixed a reported problem where an AE_NOT_FOUND error 5890occurred occasionally during _BST evaluation. This turned out to 5891be an Owner ID allocation issue where a called method did not get 5892a new ID assigned to it. Eventually, (after 64k calls), the Owner 5893ID UINT16 would wraparound so that the ID would be the same as the 5894caller's and the called method would delete the caller's 5895namespace. 5896 5897Implemented extended error reporting for control methods that are 5898aborted due to a run-time exception. Output includes the exact 5899AML instruction that caused the method abort, a dump of the method 5900locals and arguments at the time of the abort, and a trace of all 5901nested control method calls. 5902 5903Modified the interpreter to allow the creation of buffers of zero 5904length from the AML code. Implemented new code to ensure that no 5905attempt is made to actually allocate a memory buffer (of length 5906zero) - instead, a simple buffer object with a NULL buffer pointer 5907and length zero is created. A warning is no longer issued when 5908the AML attempts to create a zero-length buffer. 5909 5910Implemented a workaround for the "leading asterisk issue" in 5911_HIDs, _UIDs, and _CIDs in the AML interpreter. One leading 5912asterisk is automatically removed if present in any HID, UID, or 5913CID strings. The iASL compiler will still flag this asterisk as 5914an error, however. 5915 5916Implemented full support for _CID methods that return a package of 5917multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface 5918now additionally returns a device _CID list if present. This 5919required a change to the external interface in order to pass an 5920ACPI_BUFFER object as a parameter since the _CID list is of 5921variable length. 5922 5923Fixed a problem with the new AE_SAME_HANDLER exception where 5924handler initialization code did not know about this exception. 5925 5926Code and Data Size: Current and previous core subsystem library 5927sizes are shown below. These are the code and data sizes for the 5928acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 5929these values do not include any ACPI driver or OSPM code. The 5930debug version of the code includes the debug output trace 5931mechanism and has a much larger code and data size. Note that 5932these values will vary depending on the efficiency of the compiler 5933and the compiler options used during generation. 5934 5935 Previous Release (20030509): 5936 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 5937 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 5938 Current Release: 5939 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 5940 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 5941 5942 59432) Linux: 5944 5945Fixed a bug in which we would reinitialize the ACPI interrupt 5946after it was already working, thus disabling all ACPI and the IRQs 5947for any other device sharing the interrupt. (Thanks to Stian 5948Jordet) 5949 5950Toshiba driver update (John Belmonte) 5951 5952Return only 0 or 1 for our interrupt handler status (Andrew 5953Morton) 5954 5955 59563) iASL Compiler: 5957 5958Fixed a reported problem where multiple (nested) ElseIf() 5959statements were not handled correctly by the compiler, resulting 5960in incorrect warnings and incorrect AML code. This was a problem 5961in both the ASL parser and the code generator. 5962 5963 59644) Documentation: 5965 5966Added changes to existing interfaces, new exception codes, and new 5967text concerning reference count object management versus garbage 5968collection. 5969 5970---------------------------------------- 597109 May 2003. Summary of changes for version 20030509. 5972 5973 59741) ACPI CA Core Subsystem: 5975 5976Changed the subsystem initialization sequence to hold off 5977installation of address space handlers until the hardware has been 5978initialized and the system has entered ACPI mode. This is because 5979the installation of space handlers can cause _REG methods to be 5980run. Previously, the _REG methods could potentially be run before 5981ACPI mode was enabled. 5982 5983Fixed some memory leak issues related to address space handler and 5984notify handler installation. There were some problems with the 5985reference count mechanism caused by the fact that the handler 5986objects are shared across several namespace objects. 5987 5988Fixed a reported problem where reference counts within the 5989namespace were not properly updated when named objects created by 5990method execution were deleted. 5991 5992Fixed a reported problem where multiple SSDTs caused a deletion 5993issue during subsystem termination. Restructured the table data 5994structures to simplify the linked lists and the related code. 5995 5996Fixed a problem where the table ID associated with secondary 5997tables (SSDTs) was not being propagated into the namespace objects 5998created by those tables. This would only present a problem for 5999tables that are unloaded at run-time, however. 6000 6001Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE 6002type as the length parameter (instead of UINT32). 6003 6004Solved a long-standing problem where an ALREADY_EXISTS error 6005appears on various systems. This problem could happen when there 6006are multiple PCI_Config operation regions under a single PCI root 6007bus. This doesn't happen very frequently, but there are some 6008systems that do this in the ASL. 6009 6010Fixed a reported problem where the internal DeleteNode function 6011was incorrectly handling the case where a namespace node was the 6012first in the parent's child list, and had additional peers (not 6013the only child, but first in the list of children.) 6014 6015Code and Data Size: Current core subsystem library sizes are shown 6016below. These are the code and data sizes for the acpica.lib 6017produced by the Microsoft Visual C++ 6.0 compiler, and these 6018values do not include any ACPI driver or OSPM code. The debug 6019version of the code includes the debug output trace mechanism and 6020has a much larger code and data size. Note that these values will 6021vary depending on the efficiency of the compiler and the compiler 6022options used during generation. 6023 6024 Previous Release 6025 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 6026 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 6027 Current Release: 6028 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 6029 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 6030 6031 60322) Linux: 6033 6034Allow ":" in OS override string (Ducrot Bruno) 6035 6036Kobject fix (Greg KH) 6037 6038 60393 iASL Compiler/Disassembler: 6040 6041Fixed a problem in the generation of the C source code files (AML 6042is emitted in C source statements for BIOS inclusion) where the 6043Ascii dump that appears within a C comment at the end of each line 6044could cause a compile time error if the AML sequence happens to 6045have an open comment or close comment sequence embedded. 6046 6047 6048---------------------------------------- 604924 April 2003. Summary of changes for version 20030424. 6050 6051 60521) ACPI CA Core Subsystem: 6053 6054Support for big-endian systems has been implemented. Most of the 6055support has been invisibly added behind big-endian versions of the 6056ACPI_MOVE_* macros. 6057 6058Fixed a problem in AcpiHwDisableGpeBlock() and 6059AcpiHwClearGpeBlock() where an incorrect offset was passed to the 6060low level hardware write routine. The offset parameter was 6061actually eliminated from the low level read/write routines because 6062they had become obsolete. 6063 6064Fixed a problem where a handler object was deleted twice during 6065the removal of a fixed event handler. 6066 6067 60682) Linux: 6069 6070A fix for SMP systems with link devices was contributed by 6071 6072Compaq's Dan Zink. 6073 6074(2.5) Return whether we handled the interrupt in our IRQ handler. 6075(Linux ISRs no longer return void, so we can propagate the handler 6076return value from the ACPI CA core back to the OS.) 6077 6078 6079 60803) Documentation: 6081 6082The ACPI CA Programmer Reference has been updated to reflect new 6083interfaces and changes to existing interfaces. 6084 6085---------------------------------------- 608628 March 2003. Summary of changes for version 20030328. 6087 60881) ACPI CA Core Subsystem: 6089 6090The GPE Block Device support has been completed. New interfaces 6091are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event 6092interfaces (enable, disable, clear, getstatus) have been split 6093into separate interfaces for Fixed Events and General Purpose 6094Events (GPEs) in order to support GPE Block Devices properly. 6095 6096Fixed a problem where the error message "Failed to acquire 6097semaphore" would appear during operations on the embedded 6098controller (EC). 6099 6100Code and Data Size: Current core subsystem library sizes are shown 6101below. These are the code and data sizes for the acpica.lib 6102produced by the Microsoft Visual C++ 6.0 compiler, and these 6103values do not include any ACPI driver or OSPM code. The debug 6104version of the code includes the debug output trace mechanism and 6105has a much larger code and data size. Note that these values will 6106vary depending on the efficiency of the compiler and the compiler 6107options used during generation. 6108 6109 Previous Release 6110 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 6111 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 6112 Current Release: 6113 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 6114 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 6115 6116 6117---------------------------------------- 611828 February 2003. Summary of changes for version 20030228. 6119 6120 61211) ACPI CA Core Subsystem: 6122 6123The GPE handling and dispatch code has been completely overhauled 6124in preparation for support of GPE Block Devices (ID ACPI0006). 6125This affects internal data structures and code only; there should 6126be no differences visible externally. One new file has been 6127added, evgpeblk.c 6128 6129The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only 6130fields that are used to determine the GPE block lengths. The 6131REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address 6132structures are ignored. This is per the ACPI specification but it 6133isn't very clear. The full 256 Block 0/1 GPEs are now supported 6134(the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128). 6135 6136In the SCI interrupt handler, removed the read of the PM1_CONTROL 6137register to look at the SCI_EN bit. On some machines, this read 6138causes an SMI event and greatly slows down SCI events. (This may 6139in fact be the cause of slow battery status response on some 6140systems.) 6141 6142Fixed a problem where a store of a NULL string to a package object 6143could cause the premature deletion of the object. This was seen 6144during execution of the battery _BIF method on some systems, 6145resulting in no battery data being returned. 6146 6147Added AcpiWalkResources interface to simplify parsing of resource 6148lists. 6149 6150Code and Data Size: Current core subsystem library sizes are shown 6151below. These are the code and data sizes for the acpica.lib 6152produced by the Microsoft Visual C++ 6.0 compiler, and these 6153values do not include any ACPI driver or OSPM code. The debug 6154version of the code includes the debug output trace mechanism and 6155has a much larger code and data size. Note that these values will 6156vary depending on the efficiency of the compiler and the compiler 6157options used during generation. 6158 6159 Previous Release 6160 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 6161 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 6162 Current Release: 6163 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 6164 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 6165 6166 61672) Linux 6168 6169S3 fixes (Ole Rohne) 6170 6171Update ACPI PHP driver with to use new acpi_walk_resource API 6172(Bjorn Helgaas) 6173 6174Add S4BIOS support (Pavel Machek) 6175 6176Map in entire table before performing checksum (John Stultz) 6177 6178Expand the mem= cmdline to allow the specification of reserved and 6179ACPI DATA blocks (Pavel Machek) 6180 6181Never use ACPI on VISWS 6182 6183Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez) 6184 6185Revert a change that allowed P_BLK lengths to be 4 or 5. This is 6186causing us to think that some systems support C2 when they really 6187don't. 6188 6189Do not count processor objects for non-present CPUs (Thanks to 6190Dominik Brodowski) 6191 6192 61933) iASL Compiler: 6194 6195Fixed a problem where ASL include files could not be found and 6196opened. 6197 6198Added support for the _PDC reserved name. 6199 6200 6201---------------------------------------- 620222 January 2003. Summary of changes for version 20030122. 6203 6204 62051) ACPI CA Core Subsystem: 6206 6207Added a check for constructs of the form: Store (Local0, Local0) 6208where Local0 is not initialized. Apparently, some BIOS 6209programmers believe that this is a NOOP. Since this store doesn't 6210do anything anyway, the new prototype behavior will ignore this 6211error. This is a case where we can relax the strict checking in 6212the interpreter in the name of compatibility. 6213 6214 62152) Linux 6216 6217The AcpiSrc Source Conversion Utility has been released with the 6218Linux package for the first time. This is the utility that is 6219used to convert the ACPI CA base source code to the Linux version. 6220 6221(Both) Handle P_BLK lengths shorter than 6 more gracefully 6222 6223(Both) Move more headers to include/acpi, and delete an unused 6224header. 6225 6226(Both) Move drivers/acpi/include directory to include/acpi 6227 6228(Both) Boot functions don't use cmdline, so don't pass it around 6229 6230(Both) Remove include of unused header (Adrian Bunk) 6231 6232(Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since 6233the 6234former now also includes the latter, acpiphp.h only needs the one, 6235now. 6236 6237(2.5) Make it possible to select method of bios restoring after S3 6238resume. [=> no more ugly ifdefs] (Pavel Machek) 6239 6240(2.5) Make proc write interfaces work (Pavel Machek) 6241 6242(2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski) 6243 6244(2.5) Break out ACPI Perf code into its own module, under cpufreq 6245(Dominik Brodowski) 6246 6247(2.4) S4BIOS support (Ducrot Bruno) 6248 6249(2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio 6250Visinoni) 6251 6252 62533) iASL Compiler: 6254 6255Added support to disassemble SSDT and PSDTs. 6256 6257Implemented support to obtain SSDTs from the Windows registry if 6258available. 6259 6260 6261---------------------------------------- 626209 January 2003. Summary of changes for version 20030109. 6263 62641) ACPI CA Core Subsystem: 6265 6266Changed the behavior of the internal Buffer-to-String conversion 6267function. The current ACPI specification states that the contents 6268of the buffer are "converted to a string of two-character 6269hexadecimal numbers, each separated by a space". Unfortunately, 6270this definition is not backwards compatible with existing ACPI 1.0 6271implementations (although the behavior was not defined in the ACPI 62721.0 specification). The new behavior simply copies data from the 6273buffer to the string until a null character is found or the end of 6274the buffer is reached. The new String object is always null 6275terminated. This problem was seen during the generation of _BIF 6276battery data where incorrect strings were returned for battery 6277type, etc. This will also require an errata to the ACPI 6278specification. 6279 6280Renamed all instances of NATIVE_UINT and NATIVE_INT to 6281ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively. 6282 6283Copyright in all module headers (both Linux and non-Linux) has be 6284updated to 2003. 6285 6286Code and Data Size: Current core subsystem library sizes are shown 6287below. These are the code and data sizes for the acpica.lib 6288produced by the Microsoft Visual C++ 6.0 compiler, and these 6289values do not include any ACPI driver or OSPM code. The debug 6290version of the code includes the debug output trace mechanism and 6291has a much larger code and data size. Note that these values will 6292vary depending on the efficiency of the compiler and the compiler 6293options used during generation. 6294 6295 Previous Release 6296 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 6297 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 6298 Current Release: 6299 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 6300 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 6301 6302 63032) Linux 6304 6305Fixed an oops on module insertion/removal (Matthew Tippett) 6306 6307(2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante) 6308 6309(2.5) Replace pr_debug (Randy Dunlap) 6310 6311(2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski) 6312 6313(Both) Eliminate spawning of thread from timer callback, in favor 6314of schedule_work() 6315 6316(Both) Show Lid status in /proc (Zdenek OGAR Skalak) 6317 6318(Both) Added define for Fixed Function HW region (Matthew Wilcox) 6319 6320(Both) Add missing statics to button.c (Pavel Machek) 6321 6322Several changes have been made to the source code translation 6323utility that generates the Linux Code in order to make the code 6324more "Linux-like": 6325 6326All typedefs on structs and unions have been removed in keeping 6327with the Linux coding style. 6328 6329Removed the non-Linux SourceSafe module revision number from each 6330module header. 6331 6332Completed major overhaul of symbols to be lowercased for linux. 6333Doubled the number of symbols that are lowercased. 6334 6335Fixed a problem where identifiers within procedure headers and 6336within quotes were not fully lower cased (they were left with a 6337starting capital.) 6338 6339Some C macros whose only purpose is to allow the generation of 16- 6340bit code are now completely removed in the Linux code, increasing 6341readability and maintainability. 6342 6343---------------------------------------- 6344 634512 December 2002. Summary of changes for version 20021212. 6346 6347 63481) ACPI CA Core Subsystem: 6349 6350Fixed a problem where the creation of a zero-length AML Buffer 6351would cause a fault. 6352 6353Fixed a problem where a Buffer object that pointed to a static AML 6354buffer (in an ACPI table) could inadvertently be deleted, causing 6355memory corruption. 6356 6357Fixed a problem where a user buffer (passed in to the external 6358ACPI CA interfaces) could be overwritten if the buffer was too 6359small to complete the operation, causing memory corruption. 6360 6361Fixed a problem in the Buffer-to-String conversion code where a 6362string of length one was always returned, regardless of the size 6363of the input Buffer object. 6364 6365Removed the NATIVE_CHAR data type across the entire source due to 6366lack of need and lack of consistent use. 6367 6368Code and Data Size: Current core subsystem library sizes are shown 6369below. These are the code and data sizes for the acpica.lib 6370produced by the Microsoft Visual C++ 6.0 compiler, and these 6371values do not include any ACPI driver or OSPM code. The debug 6372version of the code includes the debug output trace mechanism and 6373has a much larger code and data size. Note that these values will 6374vary depending on the efficiency of the compiler and the compiler 6375options used during generation. 6376 6377 Previous Release 6378 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 6379 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 6380 Current Release: 6381 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 6382 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 6383 6384 6385---------------------------------------- 638605 December 2002. Summary of changes for version 20021205. 6387 63881) ACPI CA Core Subsystem: 6389 6390Fixed a problem where a store to a String or Buffer object could 6391cause corruption of the DSDT if the object type being stored was 6392the same as the target object type and the length of the object 6393being stored was equal to or smaller than the original (existing) 6394target object. This was seen to cause corruption of battery _BIF 6395buffers if the _BIF method modified the buffer on the fly. 6396 6397Fixed a problem where an internal error was generated if a control 6398method invocation was used in an OperationRegion, Buffer, or 6399Package declaration. This was caused by the deferred parsing of 6400the control method and thus the deferred creation of the internal 6401method object. The solution to this problem was to create the 6402internal method object at the moment the method is encountered in 6403the first pass - so that subsequent references to the method will 6404able to obtain the required parameter count and thus properly 6405parse the method invocation. This problem presented itself as an 6406AE_AML_INTERNAL during the pass 1 parse phase during table load. 6407 6408Fixed a problem where the internal String object copy routine did 6409not always allocate sufficient memory for the target String object 6410and caused memory corruption. This problem was seen to cause 6411"Allocation already present in list!" errors as memory allocation 6412became corrupted. 6413 6414Implemented a new function for the evaluation of namespace objects 6415that allows the specification of the allowable return object 6416types. This simplifies a lot of code that checks for a return 6417object of one or more specific objects returned from the 6418evaluation (such as _STA, etc.) This may become and external 6419function if it would be useful to ACPI-related drivers. 6420 6421Completed another round of prefixing #defines with "ACPI_" for 6422clarity. 6423 6424Completed additional code restructuring to allow more modular 6425linking for iASL compiler and AcpiExec. Several files were split 6426creating new files. New files: nsparse.c dsinit.c evgpe.c 6427 6428Implemented an abort mechanism to terminate an executing control 6429method via the AML debugger. This feature is useful for debugging 6430control methods that depend (wait) for specific hardware 6431responses. 6432 6433Code and Data Size: Current core subsystem library sizes are shown 6434below. These are the code and data sizes for the acpica.lib 6435produced by the Microsoft Visual C++ 6.0 compiler, and these 6436values do not include any ACPI driver or OSPM code. The debug 6437version of the code includes the debug output trace mechanism and 6438has a much larger code and data size. Note that these values will 6439vary depending on the efficiency of the compiler and the compiler 6440options used during generation. 6441 6442 Previous Release 6443 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 6444 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 6445 Current Release: 6446 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 6447 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 6448 6449 64502) iASL Compiler/Disassembler 6451 6452Fixed a compiler code generation problem for "Interrupt" Resource 6453Descriptors. If specified in the ASL, the optional "Resource 6454Source Index" and "Resource Source" fields were not inserted into 6455the correct location within the AML resource descriptor, creating 6456an invalid descriptor. 6457 6458Fixed a disassembler problem for "Interrupt" resource descriptors. 6459The optional "Resource Source Index" and "Resource Source" fields 6460were ignored. 6461 6462 6463---------------------------------------- 646422 November 2002. Summary of changes for version 20021122. 6465 6466 64671) ACPI CA Core Subsystem: 6468 6469Fixed a reported problem where an object stored to a Method Local 6470or Arg was not copied to a new object during the store - the 6471object pointer was simply copied to the Local/Arg. This caused 6472all subsequent operations on the Local/Arg to also affect the 6473original source of the store operation. 6474 6475Fixed a problem where a store operation to a Method Local or Arg 6476was not completed properly if the Local/Arg contained a reference 6477(from RefOf) to a named field. The general-purpose store-to- 6478namespace-node code is now used so that this case is handled 6479automatically. 6480 6481Fixed a problem where the internal object copy routine would cause 6482a protection fault if the object being copied was a Package and 6483contained either 1) a NULL package element or 2) a nested sub- 6484package. 6485 6486Fixed a problem with the GPE initialization that resulted from an 6487ambiguity in the ACPI specification. One section of the 6488specification states that both the address and length of the GPE 6489block must be zero if the block is not supported. Another section 6490implies that only the address need be zero if the block is not 6491supported. The code has been changed so that both the address and 6492the length must be non-zero to indicate a valid GPE block (i.e., 6493if either the address or the length is zero, the GPE block is 6494invalid.) 6495 6496Code and Data Size: Current core subsystem library sizes are shown 6497below. These are the code and data sizes for the acpica.lib 6498produced by the Microsoft Visual C++ 6.0 compiler, and these 6499values do not include any ACPI driver or OSPM code. The debug 6500version of the code includes the debug output trace mechanism and 6501has a much larger code and data size. Note that these values will 6502vary depending on the efficiency of the compiler and the compiler 6503options used during generation. 6504 6505 Previous Release 6506 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 6507 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 6508 Current Release: 6509 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 6510 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 6511 6512 65132) Linux 6514 6515Cleaned up EC driver. Exported an external EC read/write 6516interface. By going through this, other drivers (most notably 6517sonypi) will be able to serialize access to the EC. 6518 6519 65203) iASL Compiler/Disassembler 6521 6522Implemented support to optionally generate include files for both 6523ASM and C (the -i switch). This simplifies BIOS development by 6524automatically creating include files that contain external 6525declarations for the symbols that are created within the 6526 6527(optionally generated) ASM and C AML source files. 6528 6529 6530---------------------------------------- 653115 November 2002. Summary of changes for version 20021115. 6532 65331) ACPI CA Core Subsystem: 6534 6535Fixed a memory leak problem where an error during resolution of 6536 6537method arguments during a method invocation from another method 6538failed to cleanup properly by deleting all successfully resolved 6539argument objects. 6540 6541Fixed a problem where the target of the Index() operator was not 6542correctly constructed if the source object was a package. This 6543problem has not been detected because the use of a target operand 6544with Index() is very rare. 6545 6546Fixed a problem with the Index() operator where an attempt was 6547made to delete the operand objects twice. 6548 6549Fixed a problem where an attempt was made to delete an operand 6550twice during execution of the CondRefOf() operator if the target 6551did not exist. 6552 6553Implemented the first of perhaps several internal create object 6554functions that create and initialize a specific object type. This 6555consolidates duplicated code wherever the object is created, thus 6556shrinking the size of the subsystem. 6557 6558Implemented improved debug/error messages for errors that occur 6559during nested method invocations. All executing method pathnames 6560are displayed (with the error) as the call stack is unwound - thus 6561simplifying debug. 6562 6563Fixed a problem introduced in the 10/02 release that caused 6564premature deletion of a buffer object if a buffer was used as an 6565ASL operand where an integer operand is required (Thus causing an 6566implicit object conversion from Buffer to Integer.) The change in 6567the 10/02 release was attempting to fix a memory leak (albeit 6568incorrectly.) 6569 6570Code and Data Size: Current core subsystem library sizes are shown 6571below. These are the code and data sizes for the acpica.lib 6572produced by the Microsoft Visual C++ 6.0 compiler, and these 6573values do not include any ACPI driver or OSPM code. The debug 6574version of the code includes the debug output trace mechanism and 6575has a much larger code and data size. Note that these values will 6576vary depending on the efficiency of the compiler and the compiler 6577options used during generation. 6578 6579 Previous Release 6580 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 6581 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 6582 Current Release: 6583 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 6584 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 6585 6586 65872) Linux 6588 6589Changed the implementation of the ACPI semaphores to use down() 6590instead of down_interruptable(). It is important that the 6591execution of ACPI control methods not be interrupted by signals. 6592Methods must run to completion, or the system may be left in an 6593unknown/unstable state. 6594 6595Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set. 6596(Shawn Starr) 6597 6598 65993) iASL Compiler/Disassembler 6600 6601 6602Changed the default location of output files. All output files 6603are now placed in the current directory by default instead of in 6604the directory of the source file. This change may affect some 6605existing makefiles, but it brings the behavior of the compiler in 6606line with other similar tools. The location of the output files 6607can be overridden with the -p command line switch. 6608 6609 6610---------------------------------------- 661111 November 2002. Summary of changes for version 20021111. 6612 6613 66140) ACPI Specification 2.0B is released and is now available at: 6615http://www.acpi.info/index.html 6616 6617 66181) ACPI CA Core Subsystem: 6619 6620Implemented support for the ACPI 2.0 SMBus Operation Regions. 6621This includes the early detection and handoff of the request to 6622the SMBus region handler (avoiding all of the complex field 6623support code), and support for the bidirectional return packet 6624from an SMBus write operation. This paves the way for the 6625development of SMBus drivers in each host operating system. 6626 6627Fixed a problem where the semaphore WAIT_FOREVER constant was 6628defined as 32 bits, but must be 16 bits according to the ACPI 6629specification. This had the side effect of causing ASL 6630Mutex/Event timeouts even though the ASL code requested a wait 6631forever. Changed all internal references to the ACPI timeout 6632parameter to 16 bits to prevent future problems. Changed the name 6633of WAIT_FOREVER to ACPI_WAIT_FOREVER. 6634 6635Code and Data Size: Current core subsystem library sizes are shown 6636below. These are the code and data sizes for the acpica.lib 6637produced by the Microsoft Visual C++ 6.0 compiler, and these 6638values do not include any ACPI driver or OSPM code. The debug 6639version of the code includes the debug output trace mechanism and 6640has a much larger code and data size. Note that these values will 6641vary depending on the efficiency of the compiler and the compiler 6642options used during generation. 6643 6644 Previous Release 6645 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 6646 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 6647 Current Release: 6648 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 6649 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 6650 6651 66522) Linux 6653 6654Module loading/unloading fixes (John Cagle) 6655 6656 66573) iASL Compiler/Disassembler 6658 6659Added support for the SMBBlockProcessCall keyword (ACPI 2.0) 6660 6661Implemented support for the disassembly of all SMBus protocol 6662keywords (SMBQuick, SMBWord, etc.) 6663 6664---------------------------------------- 666501 November 2002. Summary of changes for version 20021101. 6666 6667 66681) ACPI CA Core Subsystem: 6669 6670Fixed a problem where platforms that have a GPE1 block but no GPE0 6671block were not handled correctly. This resulted in a "GPE 6672overlap" error message. GPE0 is no longer required. 6673 6674Removed code added in the previous release that inserted nodes 6675into the namespace in alphabetical order. This caused some side- 6676effects on various machines. The root cause of the problem is 6677still under investigation since in theory, the internal ordering 6678of the namespace nodes should not matter. 6679 6680 6681Enhanced error reporting for the case where a named object is not 6682found during control method execution. The full ACPI namepath 6683(name reference) of the object that was not found is displayed in 6684this case. 6685 6686Note: as a result of the overhaul of the namespace object types in 6687the previous release, the namespace nodes for the predefined 6688scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE 6689instead of ACPI_TYPE_ANY. This simplifies the namespace 6690management code but may affect code that walks the namespace tree 6691looking for specific object types. 6692 6693Code and Data Size: Current core subsystem library sizes are shown 6694below. These are the code and data sizes for the acpica.lib 6695produced by the Microsoft Visual C++ 6.0 compiler, and these 6696values do not include any ACPI driver or OSPM code. The debug 6697version of the code includes the debug output trace mechanism and 6698has a much larger code and data size. Note that these values will 6699vary depending on the efficiency of the compiler and the compiler 6700options used during generation. 6701 6702 Previous Release 6703 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 6704 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 6705 Current Release: 6706 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 6707 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 6708 6709 67102) Linux 6711 6712Fixed a problem introduced in the previous release where the 6713Processor and Thermal objects were not recognized and installed in 6714/proc. This was related to the scope type change described above. 6715 6716 67173) iASL Compiler/Disassembler 6718 6719Implemented the -g option to get all of the required ACPI tables 6720from the registry and save them to files (Windows version of the 6721compiler only.) The required tables are the FADT, FACS, and DSDT. 6722 6723Added ACPI table checksum validation during table disassembly in 6724order to catch corrupted tables. 6725 6726 6727---------------------------------------- 672822 October 2002. Summary of changes for version 20021022. 6729 67301) ACPI CA Core Subsystem: 6731 6732Implemented a restriction on the Scope operator that the target 6733must already exist in the namespace at the time the operator is 6734encountered (during table load or method execution). In other 6735words, forward references are not allowed and Scope() cannot 6736create a new object. This changes the previous behavior where the 6737interpreter would create the name if not found. This new behavior 6738correctly enables the search-to-root algorithm during namespace 6739lookup of the target name. Because of this upsearch, this fixes 6740the known Compaq _SB_.OKEC problem and makes both the AML 6741interpreter and iASL compiler compatible with other ACPI 6742implementations. 6743 6744Completed a major overhaul of the internal ACPI object types for 6745the ACPI Namespace and the associated operand objects. Many of 6746these types had become obsolete with the introduction of the two- 6747pass namespace load. This cleanup simplifies the code and makes 6748the entire namespace load mechanism much clearer and easier to 6749understand. 6750 6751Improved debug output for tracking scope opening/closing to help 6752diagnose scoping issues. The old scope name as well as the new 6753scope name are displayed. Also improved error messages for 6754problems with ASL Mutex objects and error messages for GPE 6755problems. 6756 6757Cleaned up the namespace dump code, removed obsolete code. 6758 6759All string output (for all namespace/object dumps) now uses the 6760common ACPI string output procedure which handles escapes properly 6761and does not emit non-printable characters. 6762 6763Fixed some issues with constants in the 64-bit version of the 6764local C library (utclib.c) 6765 6766 67672) Linux 6768 6769EC Driver: No longer attempts to acquire the Global Lock at 6770interrupt level. 6771 6772 67733) iASL Compiler/Disassembler 6774 6775Implemented ACPI 2.0B grammar change that disallows all Type 1 and 67762 opcodes outside of a control method. This means that the 6777"executable" operators (versus the "namespace" operators) cannot 6778be used at the table level; they can only be used within a control 6779method. 6780 6781Implemented the restriction on the Scope() operator where the 6782target must already exist in the namespace at the time the 6783operator is encountered (during ASL compilation). In other words, 6784forward references are not allowed and Scope() cannot create a new 6785object. This makes the iASL compiler compatible with other ACPI 6786implementations and makes the Scope() implementation adhere to the 6787ACPI specification. 6788 6789Fixed a problem where namepath optimization for the Alias operator 6790was optimizing the wrong path (of the two namepaths.) This caused 6791a "Missing alias link" error message. 6792 6793Fixed a problem where an "unknown reserved name" warning could be 6794incorrectly generated for names like "_SB" when the trailing 6795underscore is not used in the original ASL. 6796 6797Fixed a problem where the reserved name check did not handle 6798NamePaths with multiple NameSegs correctly. The first nameseg of 6799the NamePath was examined instead of the last NameSeg. 6800 6801 6802---------------------------------------- 6803 680402 October 2002. Summary of changes for this release. 6805 6806 68071) ACPI CA Core Subsystem version 20021002: 6808 6809Fixed a problem where a store/copy of a string to an existing 6810string did not always set the string length properly in the String 6811object. 6812 6813Fixed a reported problem with the ToString operator where the 6814behavior was identical to the ToHexString operator instead of just 6815simply converting a raw buffer to a string data type. 6816 6817Fixed a problem where CopyObject and the other "explicit" 6818conversion operators were not updating the internal namespace node 6819type as part of the store operation. 6820 6821Fixed a memory leak during implicit source operand conversion 6822where the original object was not deleted if it was converted to a 6823new object of a different type. 6824 6825Enhanced error messages for all problems associated with namespace 6826lookups. Common procedure generates and prints the lookup name as 6827well as the formatted status. 6828 6829Completed implementation of a new design for the Alias support 6830within the namespace. The existing design did not handle the case 6831where a new object was assigned to one of the two names due to the 6832use of an explicit conversion operator, resulting in the two names 6833pointing to two different objects. The new design simply points 6834the Alias name to the original name node - not to the object. 6835This results in a level of indirection that must be handled in the 6836name resolution mechanism. 6837 6838Code and Data Size: Current core subsystem library sizes are shown 6839below. These are the code and data sizes for the acpica.lib 6840produced by the Microsoft Visual C++ 6.0 compiler, and these 6841values do not include any ACPI driver or OSPM code. The debug 6842version of the code includes the debug output trace mechanism and 6843has a larger code and data size. Note that these values will vary 6844depending on the efficiency of the compiler and the compiler 6845options used during generation. 6846 6847 Previous Release 6848 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 6849 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 6850 Current Release: 6851 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 6852 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 6853 6854 68552) Linux 6856 6857Initialize thermal driver's timer before it is used. (Knut 6858Neumann) 6859 6860Allow handling negative celsius values. (Kochi Takayoshi) 6861 6862Fix thermal management and make trip points. R/W (Pavel Machek) 6863 6864Fix /proc/acpi/sleep. (P. Christeas) 6865 6866IA64 fixes. (David Mosberger) 6867 6868Fix reversed logic in blacklist code. (Sergio Monteiro Basto) 6869 6870Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik 6871Brodowski) 6872 6873 68743) iASL Compiler/Disassembler 6875 6876Clarified some warning/error messages. 6877 6878 6879---------------------------------------- 688018 September 2002. Summary of changes for this release. 6881 6882 68831) ACPI CA Core Subsystem version 20020918: 6884 6885Fixed a reported problem with reference chaining (via the Index() 6886and RefOf() operators) in the ObjectType() and SizeOf() operators. 6887The definition of these operators includes the dereferencing of 6888all chained references to return information on the base object. 6889 6890Fixed a problem with stores to indexed package elements - the 6891existing code would not complete the store if an "implicit 6892conversion" was not performed. In other words, if the existing 6893object (package element) was to be replaced completely, the code 6894didn't handle this case. 6895 6896Relaxed typechecking on the ASL "Scope" operator to allow the 6897target name to refer to an object of type Integer, String, or 6898Buffer, in addition to the scoping object types (Device, 6899predefined Scopes, Processor, PowerResource, and ThermalZone.) 6900This allows existing AML code that has workarounds for a bug in 6901Windows to function properly. A warning is issued, however. This 6902affects both the AML interpreter and the iASL compiler. Below is 6903an example of this type of ASL code: 6904 6905 Name(DEB,0x00) 6906 Scope(DEB) 6907 { 6908 6909Fixed some reported problems with 64-bit integer support in the 6910local implementation of C library functions (clib.c) 6911 6912 69132) Linux 6914 6915Use ACPI fix map region instead of IOAPIC region, since it is 6916undefined in non-SMP. 6917 6918Ensure that the SCI has the proper polarity and trigger, even on 6919systems that do not have an interrupt override entry in the MADT. 6920 69212.5 big driver reorganization (Pat Mochel) 6922 6923Use early table mapping code from acpitable.c (Andi Kleen) 6924 6925New blacklist entries (Andi Kleen) 6926 6927Blacklist improvements. Split blacklist code out into a separate 6928file. Move checking the blacklist to very early. Previously, we 6929would use ACPI tables, and then halfway through init, check the 6930blacklist -- too late. Now, it's early enough to completely fall- 6931back to non-ACPI. 6932 6933 69343) iASL Compiler/Disassembler version 20020918: 6935 6936Fixed a problem where the typechecking code didn't know that an 6937alias could point to a method. In other words, aliases were not 6938being dereferenced during typechecking. 6939 6940 6941---------------------------------------- 694229 August 2002. Summary of changes for this release. 6943 69441) ACPI CA Core Subsystem Version 20020829: 6945 6946If the target of a Scope() operator already exists, it must be an 6947object type that actually opens a scope -- such as a Device, 6948Method, Scope, etc. This is a fatal runtime error. Similar error 6949check has been added to the iASL compiler also. 6950 6951Tightened up the namespace load to disallow multiple names in the 6952same scope. This previously was allowed if both objects were of 6953the same type. (i.e., a lookup was the same as entering a new 6954name). 6955 6956 69572) Linux 6958 6959Ensure that the ACPI interrupt has the proper trigger and 6960polarity. 6961 6962local_irq_disable is extraneous. (Matthew Wilcox) 6963 6964Make "acpi=off" actually do what it says, and not use the ACPI 6965interpreter *or* the tables. 6966 6967Added arch-neutral support for parsing SLIT and SRAT tables (Kochi 6968Takayoshi) 6969 6970 69713) iASL Compiler/Disassembler Version 20020829: 6972 6973Implemented namepath optimization for name declarations. For 6974example, a declaration like "Method (\_SB_.ABCD)" would get 6975optimized to "Method (ABCD)" if the declaration is within the 6976\_SB_ scope. This optimization is in addition to the named 6977reference path optimization first released in the previous 6978version. This would seem to complete all possible optimizations 6979for namepaths within the ASL/AML. 6980 6981If the target of a Scope() operator already exists, it must be an 6982object type that actually opens a scope -- such as a Device, 6983Method, Scope, etc. 6984 6985Implemented a check and warning for unreachable code in the same 6986block below a Return() statement. 6987 6988Fixed a problem where the listing file was not generated if the 6989compiler aborted if the maximum error count was exceeded (200). 6990 6991Fixed a problem where the typechecking of method return values was 6992broken. This includes the check for a return value when the 6993method is invoked as a TermArg (a return value is expected.) 6994 6995Fixed a reported problem where EOF conditions during a quoted 6996string or comment caused a fault. 6997 6998 6999---------------------------------------- 700015 August 2002. Summary of changes for this release. 7001 70021) ACPI CA Core Subsystem Version 20020815: 7003 7004Fixed a reported problem where a Store to a method argument that 7005contains a reference did not perform the indirect store correctly. 7006This problem was created during the conversion to the new 7007reference object model - the indirect store to a method argument 7008code was not updated to reflect the new model. 7009 7010Reworked the ACPI mode change code to better conform to ACPI 2.0, 7011handle corner cases, and improve code legibility (Kochi Takayoshi) 7012 7013Fixed a problem with the pathname parsing for the carat (^) 7014prefix. The heavy use of the carat operator by the new namepath 7015optimization in the iASL compiler uncovered a problem with the AML 7016interpreter handling of this prefix. In the case where one or 7017more carats precede a single nameseg, the nameseg was treated as 7018standalone and the search rule (to root) was inadvertently 7019applied. This could cause both the iASL compiler and the 7020interpreter to find the wrong object or to miss the error that 7021should occur if the object does not exist at that exact pathname. 7022 7023Found and fixed the problem where the HP Pavilion DSDT would not 7024load. This was a relatively minor tweak to the table loading code 7025(a problem caused by the unexpected encounter with a method 7026invocation not within a control method), but it does not solve the 7027overall issue of the execution of AML code at the table level. 7028This investigation is still ongoing. 7029 7030Code and Data Size: Current core subsystem library sizes are shown 7031below. These are the code and data sizes for the acpica.lib 7032produced by the Microsoft Visual C++ 6.0 compiler, and these 7033values do not include any ACPI driver or OSPM code. The debug 7034version of the code includes the debug output trace mechanism and 7035has a larger code and data size. Note that these values will vary 7036depending on the efficiency of the compiler and the compiler 7037options used during generation. 7038 7039 Previous Release 7040 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 7041 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 7042 Current Release: 7043 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 7044 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 7045 7046 70472) Linux 7048 7049Remove redundant slab.h include (Brad Hards) 7050 7051Fix several bugs in thermal.c (Herbert Nachtnebel) 7052 7053Make CONFIG_ACPI_BOOT work properly (Pavel Machek) 7054 7055Change acpi_system_suspend to use updated irq functions (Pavel 7056Machek) 7057 7058Export acpi_get_firmware_table (Matthew Wilcox) 7059 7060Use proper root proc entry for ACPI (Kochi Takayoshi) 7061 7062Fix early-boot table parsing (Bjorn Helgaas) 7063 7064 70653) iASL Compiler/Disassembler 7066 7067Reworked the compiler options to make them more consistent and to 7068use two-letter options where appropriate. We were running out of 7069sensible letters. This may break some makefiles, so check the 7070current options list by invoking the compiler with no parameters. 7071 7072Completed the design and implementation of the ASL namepath 7073optimization option for the compiler. This option optimizes all 7074references to named objects to the shortest possible path. The 7075first attempt tries to utilize a single nameseg (4 characters) and 7076the "search-to-root" algorithm used by the interpreter. If that 7077cannot be used (because either the name is not in the search path 7078or there is a conflict with another object with the same name), 7079the pathname is optimized using the carat prefix (usually a 7080shorter string than specifying the entire path from the root.) 7081 7082Implemented support to obtain the DSDT from the Windows registry 7083(when the disassembly option is specified with no input file). 7084Added this code as the implementation for AcpiOsTableOverride in 7085the Windows OSL. Migrated the 16-bit code (used in the AcpiDump 7086utility) to scan memory for the DSDT to the AcpiOsTableOverride 7087function in the DOS OSL to make the disassembler truly OS 7088independent. 7089 7090Implemented a new option to disassemble and compile in one step. 7091When used without an input filename, this option will grab the 7092DSDT from the local machine, disassemble it, and compile it in one 7093step. 7094 7095Added a warning message for invalid escapes (a backslash followed 7096by any character other than the allowable escapes). This catches 7097the quoted string error "\_SB_" (which should be "\\_SB_" ). 7098 7099Also, there are numerous instances in the ACPI specification where 7100this error occurs. 7101 7102Added a compiler option to disable all optimizations. This is 7103basically the "compatibility mode" because by using this option, 7104the AML code will come out exactly the same as other ASL 7105compilers. 7106 7107Added error messages for incorrectly ordered dependent resource 7108functions. This includes: missing EndDependentFn macro at end of 7109dependent resource list, nested dependent function macros (both 7110start and end), and missing StartDependentFn macro. These are 7111common errors that should be caught at compile time. 7112 7113Implemented _OSI support for the disassembler and compiler. _OSI 7114must be included in the namespace for proper disassembly (because 7115the disassembler must know the number of arguments.) 7116 7117Added an "optimization" message type that is optional (off by 7118default). This message is used for all optimizations - including 7119constant folding, integer optimization, and namepath optimization. 7120 7121---------------------------------------- 712225 July 2002. Summary of changes for this release. 7123 7124 71251) ACPI CA Core Subsystem Version 20020725: 7126 7127The AML Disassembler has been enhanced to produce compilable ASL 7128code and has been integrated into the iASL compiler (see below) as 7129well as the single-step disassembly for the AML debugger and the 7130disassembler for the AcpiDump utility. All ACPI 2.0A opcodes, 7131resource templates and macros are fully supported. The 7132disassembler has been tested on over 30 different AML files, 7133producing identical AML when the resulting disassembled ASL file 7134is recompiled with the same ASL compiler. 7135 7136Modified the Resource Manager to allow zero interrupts and zero 7137dma channels during the GetCurrentResources call. This was 7138causing problems on some platforms. 7139 7140Added the AcpiOsRedirectOutput interface to the OSL to simplify 7141output redirection for the AcpiOsPrintf and AcpiOsVprintf 7142interfaces. 7143 7144Code and Data Size: Current core subsystem library sizes are shown 7145below. These are the code and data sizes for the acpica.lib 7146produced by the Microsoft Visual C++ 6.0 compiler, and these 7147values do not include any ACPI driver or OSPM code. The debug 7148version of the code includes the debug output trace mechanism and 7149has a larger code and data size. Note that these values will vary 7150depending on the efficiency of the compiler and the compiler 7151options used during generation. 7152 7153 Previous Release 7154 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 7155 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 7156 Current Release: 7157 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 7158 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 7159 7160 71612) Linux 7162 7163Fixed a panic in the EC driver (Dominik Brodowski) 7164 7165Implemented checksum of the R/XSDT itself during Linux table scan 7166(Richard Schaal) 7167 7168 71693) iASL compiler 7170 7171The AML disassembler is integrated into the compiler. The "-d" 7172option invokes the disassembler to completely disassemble an 7173input AML file, producing as output a text ASL file with the 7174extension ".dsl" (to avoid name collisions with existing .asl 7175source files.) A future enhancement will allow the disassembler 7176to obtain the BIOS DSDT from the registry under Windows. 7177 7178Fixed a problem with the VendorShort and VendorLong resource 7179descriptors where an invalid AML sequence was created. 7180 7181Implemented a fix for BufferData term in the ASL parser. It was 7182inadvertently defined twice, allowing invalid syntax to pass and 7183causing reduction conflicts. 7184 7185Fixed a problem where the Ones opcode could get converted to a 7186value of zero if "Ones" was used where a byte, word or dword value 7187was expected. The 64-bit value is now truncated to the correct 7188size with the correct value. 7189 7190 7191 7192---------------------------------------- 719302 July 2002. Summary of changes for this release. 7194 7195 71961) ACPI CA Core Subsystem Version 20020702: 7197 7198The Table Manager code has been restructured to add several new 7199features. Tables that are not required by the core subsystem 7200(other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer 7201validated in any way and are returned from AcpiGetFirmwareTable if 7202requested. The AcpiOsTableOverride interface is now called for 7203each table that is loaded by the subsystem in order to allow the 7204host to override any table it chooses. Previously, only the DSDT 7205could be overridden. Added one new files, tbrsdt.c and 7206tbgetall.c. 7207 7208Fixed a problem with the conversion of internal package objects to 7209external objects (when a package is returned from a control 7210method.) The return buffer length was set to zero instead of the 7211proper length of the package object. 7212 7213Fixed a reported problem with the use of the RefOf and DeRefOf 7214operators when passing reference arguments to control methods. A 7215new type of Reference object is used internally for references 7216produced by the RefOf operator. 7217 7218Added additional error messages in the Resource Manager to explain 7219AE_BAD_DATA errors when they occur during resource parsing. 7220 7221Split the AcpiEnableSubsystem into two primitives to enable a 7222finer granularity initialization sequence. These two calls should 7223be called in this order: AcpiEnableSubsystem (flags), 7224AcpiInitializeObjects (flags). The flags parameter remains the 7225same. 7226 7227 72282) Linux 7229 7230Updated the ACPI utilities module to understand the new style of 7231fully resolved package objects that are now returned from the core 7232subsystem. This eliminates errors of the form: 7233 7234 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT] 7235 acpi_utils-0430 [145] acpi_evaluate_reference: 7236 Invalid element in package (not a device reference) 7237 7238The method evaluation utility uses the new buffer allocation 7239scheme instead of calling AcpiEvaluate Object twice. 7240 7241Added support for ECDT. This allows the use of the Embedded 7242 7243Controller before the namespace has been fully initialized, which 7244is necessary for ACPI 2.0 support, and for some laptops to 7245initialize properly. (Laptops using ECDT are still rare, so only 7246limited testing was performed of the added functionality.) 7247 7248Fixed memory leaks in the EC driver. 7249 7250Eliminated a brittle code structure in acpi_bus_init(). 7251 7252Eliminated the acpi_evaluate() helper function in utils.c. It is 7253no longer needed since acpi_evaluate_object can optionally 7254allocate memory for the return object. 7255 7256Implemented fix for keyboard hang when getting battery readings on 7257some systems (Stephen White) 7258 7259PCI IRQ routing update (Dominik Brodowski) 7260 7261Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC 7262support 7263 7264---------------------------------------- 726511 June 2002. Summary of changes for this release. 7266 7267 72681) ACPI CA Core Subsystem Version 20020611: 7269 7270Fixed a reported problem where constants such as Zero and One 7271appearing within _PRT packages were not handled correctly within 7272the resource manager code. Originally reported against the ASL 7273compiler because the code generator now optimizes integers to 7274their minimal AML representation (i.e. AML constants if possible.) 7275The _PRT code now handles all AML constant opcodes correctly 7276(Zero, One, Ones, Revision). 7277 7278Fixed a problem with the Concatenate operator in the AML 7279interpreter where a buffer result object was incorrectly marked as 7280not fully evaluated, causing a run-time error of AE_AML_INTERNAL. 7281 7282All package sub-objects are now fully resolved before they are 7283returned from the external ACPI interfaces. This means that name 7284strings are resolved to object handles, and constant operators 7285(Zero, One, Ones, Revision) are resolved to Integers. 7286 7287Implemented immediate resolution of the AML Constant opcodes 7288(Zero, One, Ones, Revision) to Integer objects upon detection 7289within the AML stream. This has simplified and reduced the 7290generated code size of the subsystem by eliminating about 10 7291switch statements for these constants (which previously were 7292contained in Reference objects.) The complicating issues are that 7293the Zero opcode is used as a "placeholder" for unspecified 7294optional target operands and stores to constants are defined to be 7295no-ops. 7296 7297Code and Data Size: Current core subsystem library sizes are shown 7298below. These are the code and data sizes for the acpica.lib 7299produced by the Microsoft Visual C++ 6.0 compiler, and these 7300values do not include any ACPI driver or OSPM code. The debug 7301version of the code includes the debug output trace mechanism and 7302has a larger code and data size. Note that these values will vary 7303depending on the efficiency of the compiler and the compiler 7304options used during generation. 7305 7306 Previous Release 7307 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 7308 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 7309 Current Release: 7310 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 7311 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 7312 7313 73142) Linux 7315 7316 7317Added preliminary support for obtaining _TRA data for PCI root 7318bridges (Bjorn Helgaas). 7319 7320 73213) iASL Compiler Version X2046: 7322 7323Fixed a problem where the "_DDN" reserved name was defined to be a 7324control method with one argument. There are no arguments, and 7325_DDN does not have to be a control method. 7326 7327Fixed a problem with the Linux version of the compiler where the 7328source lines printed with error messages were the wrong lines. 7329This turned out to be the "LF versus CR/LF" difference between 7330Windows and Unix. This appears to be the longstanding issue 7331concerning listing output and error messages. 7332 7333Fixed a problem with the Linux version of compiler where opcode 7334names within error messages were wrong. This was caused by a 7335slight difference in the output of the Flex tool on Linux versus 7336Windows. 7337 7338Fixed a problem with the Linux compiler where the hex output files 7339contained some garbage data caused by an internal buffer overrun. 7340 7341 7342---------------------------------------- 734317 May 2002. Summary of changes for this release. 7344 7345 73461) ACPI CA Core Subsystem Version 20020517: 7347 7348Implemented a workaround to an BIOS bug discovered on the HP 7349OmniBook where the FADT revision number and the table size are 7350inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new 7351behavior is to fallback to using only the ACPI 1.0 fields of the 7352FADT if the table is too small to be a ACPI 2.0 table as claimed 7353by the revision number. Although this is a BIOS bug, this is a 7354case where the workaround is simple enough and with no side 7355effects, so it seemed prudent to add it. A warning message is 7356issued, however. 7357 7358Implemented minimum size checks for the fixed-length ACPI tables - 7359- the FADT and FACS, as well as consistency checks between the 7360revision number and the table size. 7361 7362Fixed a reported problem in the table override support where the 7363new table pointer was incorrectly treated as a physical address 7364instead of a logical address. 7365 7366Eliminated the use of the AE_AML_ERROR exception and replaced it 7367with more descriptive codes. 7368 7369Fixed a problem where an exception would occur if an ASL Field was 7370defined with no named Field Units underneath it (used by some 7371index fields). 7372 7373Code and Data Size: Current core subsystem library sizes are shown 7374below. These are the code and data sizes for the acpica.lib 7375produced by the Microsoft Visual C++ 6.0 compiler, and these 7376values do not include any ACPI driver or OSPM code. The debug 7377version of the code includes the debug output trace mechanism and 7378has a larger code and data size. Note that these values will vary 7379depending on the efficiency of the compiler and the compiler 7380options used during generation. 7381 7382 Previous Release 7383 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 7384 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 7385 Current Release: 7386 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 7387 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 7388 7389 7390 73912) Linux 7392 7393Much work done on ACPI init (MADT and PCI IRQ routing support). 7394(Paul D. and Dominik Brodowski) 7395 7396Fix PCI IRQ-related panic on boot (Sam Revitch) 7397 7398Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno) 7399 7400Fix "MHz" typo (Dominik Brodowski) 7401 7402Fix RTC year 2000 issue (Dominik Brodowski) 7403 7404Preclude multiple button proc entries (Eric Brunet) 7405 7406Moved arch-specific code out of include/platform/aclinux.h 7407 74083) iASL Compiler Version X2044: 7409 7410Implemented error checking for the string used in the EISAID macro 7411(Usually used in the definition of the _HID object.) The code now 7412strictly enforces the PnP format - exactly 7 characters, 3 7413uppercase letters and 4 hex digits. 7414 7415If a raw string is used in the definition of the _HID object 7416(instead of the EISAID macro), the string must contain all 7417alphanumeric characters (e.g., "*PNP0011" is not allowed because 7418of the asterisk.) 7419 7420Implemented checking for invalid use of ACPI reserved names for 7421most of the name creation operators (Name, Device, Event, Mutex, 7422OperationRegion, PowerResource, Processor, and ThermalZone.) 7423Previously, this check was only performed for control methods. 7424 7425Implemented an additional check on the Name operator to emit an 7426error if a reserved name that must be implemented in ASL as a 7427control method is used. We know that a reserved name must be a 7428method if it is defined with input arguments. 7429 7430The warning emitted when a namespace object reference is not found 7431during the cross reference phase has been changed into an error. 7432The "External" directive should be used for names defined in other 7433modules. 7434 7435 74364) Tools and Utilities 7437 7438The 16-bit tools (adump16 and aexec16) have been regenerated and 7439tested. 7440 7441Fixed a problem with the output of both acpidump and adump16 where 7442the indentation of closing parentheses and brackets was not 7443 7444aligned properly with the parent block. 7445 7446 7447---------------------------------------- 744803 May 2002. Summary of changes for this release. 7449 7450 74511) ACPI CA Core Subsystem Version 20020503: 7452 7453Added support a new OSL interface that allows the host operating 7454 7455system software to override the DSDT found in the firmware - 7456AcpiOsTableOverride. With this interface, the OSL can examine the 7457version of the firmware DSDT and replace it with a different one 7458if desired. 7459 7460Added new external interfaces for accessing ACPI registers from 7461device drivers and other system software - AcpiGetRegister and 7462AcpiSetRegister. This was simply an externalization of the 7463existing AcpiHwBitRegister interfaces. 7464 7465Fixed a regression introduced in the previous build where the 7466ASL/AML CreateField operator always returned an error, 7467"destination must be a NS Node". 7468 7469Extended the maximum time (before failure) to successfully enable 7470ACPI mode to 3 seconds. 7471 7472Code and Data Size: Current core subsystem library sizes are shown 7473below. These are the code and data sizes for the acpica.lib 7474produced by the Microsoft Visual C++ 6.0 compiler, and these 7475values do not include any ACPI driver or OSPM code. The debug 7476version of the code includes the debug output trace mechanism and 7477has a larger code and data size. Note that these values will vary 7478depending on the efficiency of the compiler and the compiler 7479options used during generation. 7480 7481 Previous Release 7482 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 7483 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 7484 Current Release: 7485 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 7486 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 7487 7488 74892) Linux 7490 7491Enhanced ACPI init code for SMP. We are now fully MPS and $PIR- 7492free. While 3 out of 4 of our in-house systems work fine, the last 7493one still hangs when testing the LAPIC timer. 7494 7495Renamed many files in 2.5 kernel release to omit "acpi_" from the 7496name. 7497 7498Added warning on boot for Presario 711FR. 7499 7500Sleep improvements (Pavel Machek) 7501 7502ACPI can now be built without CONFIG_PCI enabled. 7503 7504IA64: Fixed memory map functions (JI Lee) 7505 7506 75073) iASL Compiler Version X2043: 7508 7509Added support to allow the compiler to be integrated into the MS 7510VC++ development environment for one-button compilation of single 7511files or entire projects -- with error-to-source-line mapping. 7512 7513Implemented support for compile-time constant folding for the 7514Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0 7515specification. This allows the ASL writer to use expressions 7516instead of Integer/Buffer/String constants in terms that must 7517evaluate to constants at compile time and will also simplify the 7518emitted AML in any such sub-expressions that can be folded 7519(evaluated at compile-time.) This increases the size of the 7520compiler significantly because a portion of the ACPI CA AML 7521interpreter is included within the compiler in order to pre- 7522evaluate constant expressions. 7523 7524 7525Fixed a problem with the "Unicode" ASL macro that caused the 7526compiler to fault. (This macro is used in conjunction with the 7527_STR reserved name.) 7528 7529Implemented an AML opcode optimization to use the Zero, One, and 7530Ones opcodes where possible to further reduce the size of integer 7531constants and thus reduce the overall size of the generated AML 7532code. 7533 7534Implemented error checking for new reserved terms for ACPI version 75352.0A. 7536 7537Implemented the -qr option to display the current list of ACPI 7538reserved names known to the compiler. 7539 7540Implemented the -qc option to display the current list of ASL 7541operators that are allowed within constant expressions and can 7542therefore be folded at compile time if the operands are constants. 7543 7544 75454) Documentation 7546 7547Updated the Programmer's Reference for new interfaces, data types, 7548and memory allocation model options. 7549 7550Updated the iASL Compiler User Reference to apply new format and 7551add information about new features and options. 7552 7553---------------------------------------- 755419 April 2002. Summary of changes for this release. 7555 75561) ACPI CA Core Subsystem Version 20020419: 7557 7558The source code base for the Core Subsystem has been completely 7559cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit 7560versions. The Lint option files used are included in the 7561/acpi/generate/lint directory. 7562 7563Implemented enhanced status/error checking across the entire 7564Hardware manager subsystem. Any hardware errors (reported from 7565the OSL) are now bubbled up and will abort a running control 7566method. 7567 7568 7569Fixed a problem where the per-ACPI-table integer width (32 or 64) 7570was stored only with control method nodes, causing a fault when 7571non-control method code was executed during table loading. The 7572solution implemented uses a global variable to indicate table 7573width across the entire ACPI subsystem. Therefore, ACPI CA does 7574not support mixed integer widths across different ACPI tables 7575(DSDT, SSDT). 7576 7577Fixed a problem where NULL extended fields (X fields) in an ACPI 75782.0 ACPI FADT caused the table load to fail. Although the 7579existing ACPI specification is a bit fuzzy on this topic, the new 7580behavior is to fall back on a ACPI 1.0 field if the corresponding 7581ACPI 2.0 X field is zero (even though the table revision indicates 7582a full ACPI 2.0 table.) The ACPI specification will be updated to 7583clarify this issue. 7584 7585Fixed a problem with the SystemMemory operation region handler 7586where memory was always accessed byte-wise even if the AML- 7587specified access width was larger than a byte. This caused 7588problems on systems with memory-mapped I/O. Memory is now 7589accessed with the width specified. On systems that do not support 7590non-aligned transfers, a check is made to guarantee proper address 7591alignment before proceeding in order to avoid an AML-caused 7592alignment fault within the kernel. 7593 7594 7595Fixed a problem with the ExtendedIrq resource where only one byte 7596of the 4-byte Irq field was extracted. 7597 7598Fixed the AcpiExDigitsNeeded() procedure to support _UID. This 7599function was out of date and required a rewrite. 7600 7601Code and Data Size: Current core subsystem library sizes are shown 7602below. These are the code and data sizes for the acpica.lib 7603produced by the Microsoft Visual C++ 6.0 compiler, and these 7604values do not include any ACPI driver or OSPM code. The debug 7605version of the code includes the debug output trace mechanism and 7606has a larger code and data size. Note that these values will vary 7607depending on the efficiency of the compiler and the compiler 7608options used during generation. 7609 7610 Previous Release 7611 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 7612 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 7613 Current Release: 7614 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 7615 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 7616 7617 76182) Linux 7619 7620PCI IRQ routing fixes (Dominik Brodowski) 7621 7622 76233) iASL Compiler Version X2042: 7624 7625Implemented an additional compile-time error check for a field 7626unit whose size + minimum access width would cause a run-time 7627access beyond the end-of-region. Previously, only the field size 7628itself was checked. 7629 7630The Core subsystem and iASL compiler now share a common parse 7631object in preparation for compile-time evaluation of the type 76323/4/5 ASL operators. 7633 7634 7635---------------------------------------- 7636Summary of changes for this release: 03_29_02 7637 76381) ACPI CA Core Subsystem Version 20020329: 7639 7640Implemented support for late evaluation of TermArg operands to 7641Buffer and Package objects. This allows complex expressions to be 7642used in the declarations of these object types. 7643 7644Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI 76451.0, if the field was larger than 32 bits, it was returned as a 7646buffer - otherwise it was returned as an integer. In ACPI 2.0, 7647the field is returned as a buffer only if the field is larger than 764864 bits. The TableRevision is now considered when making this 7649conversion to avoid incompatibility with existing ASL code. 7650 7651Implemented logical addressing for AcpiOsGetRootPointer. This 7652allows an RSDP with either a logical or physical address. With 7653this support, the host OS can now override all ACPI tables with 7654one logical RSDP. Includes implementation of "typed" pointer 7655support to allow a common data type for both physical and logical 7656pointers internally. This required a change to the 7657AcpiOsGetRootPointer interface. 7658 7659Implemented the use of ACPI 2.0 Generic Address Structures for all 7660GPE, Fixed Event, and PM Timer I/O. This allows the use of memory 7661mapped I/O for these ACPI features. 7662 7663Initialization now ignores not only non-required tables (All 7664tables other than the FADT, FACS, DSDT, and SSDTs), but also does 7665not validate the table headers of unrecognized tables. 7666 7667Fixed a problem where a notify handler could only be 7668installed/removed on an object of type Device. All "notify" 7669 7670objects are now supported -- Devices, Processor, Power, and 7671Thermal. 7672 7673Removed most verbosity from the ACPI_DB_INFO debug level. Only 7674critical information is returned when this debug level is enabled. 7675 7676Code and Data Size: Current core subsystem library sizes are shown 7677below. These are the code and data sizes for the acpica.lib 7678produced by the Microsoft Visual C++ 6.0 compiler, and these 7679values do not include any ACPI driver or OSPM code. The debug 7680version of the code includes the debug output trace mechanism and 7681has a larger code and data size. Note that these values will vary 7682depending on the efficiency of the compiler and the compiler 7683options used during generation. 7684 7685 Previous Release 7686 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 7687 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 7688 Current Release: 7689 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 7690 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 7691 7692 76932) Linux: 7694 7695The processor driver (acpi_processor.c) now fully supports ACPI 76962.0-based processor performance control (e.g. Intel(R) 7697SpeedStep(TM) technology) Note that older laptops that only have 7698the Intel "applet" interface are not supported through this. The 7699'limit' and 'performance' interface (/proc) are fully functional. 7700[Note that basic policy for controlling performance state 7701transitions will be included in the next version of ospmd.] The 7702idle handler was modified to more aggressively use C2, and PIIX4 7703errata handling underwent a complete overhaul (big thanks to 7704Dominik Brodowski). 7705 7706Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR- 7707based devices in the ACPI namespace are now dynamically bound 7708(associated) with their PCI counterparts (e.g. PCI1->01:00.0). 7709This allows, among other things, ACPI to resolve bus numbers for 7710subordinate PCI bridges. 7711 7712Enhanced PCI IRQ routing to get the proper bus number for _PRT 7713entries defined underneath PCI bridges. 7714 7715Added IBM 600E to bad bios list due to invalid _ADR value for 7716PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing. 7717 7718In the process of adding full MADT support (e.g. IOAPIC) for IA32 7719(acpi.c, mpparse.c) -- stay tuned. 7720 7721Added back visual differentiation between fixed-feature and 7722control-method buttons in dmesg. Buttons are also subtyped (e.g. 7723button/power/PWRF) to simplify button identification. 7724 7725We no longer use -Wno-unused when compiling debug. Please ignore 7726any "_THIS_MODULE defined but not used" messages. 7727 7728Can now shut down the system using "magic sysrq" key. 7729 7730 77313) iASL Compiler version 2041: 7732 7733Fixed a problem where conversion errors for hex/octal/decimal 7734constants were not reported. 7735 7736Implemented a fix for the General Register template Address field. 7737This field was 8 bits when it should be 64. 7738 7739Fixed a problem where errors/warnings were no longer being emitted 7740within the listing output file. 7741 7742Implemented the ACPI 2.0A restriction on ACPI Table Signatures to 7743exactly 4 characters, alphanumeric only. 7744 7745 7746 7747 7748---------------------------------------- 7749Summary of changes for this release: 03_08_02 7750 7751 77521) ACPI CA Core Subsystem Version 20020308: 7753 7754Fixed a problem with AML Fields where the use of the "AccessAny" 7755keyword could cause an interpreter error due to attempting to read 7756or write beyond the end of the parent Operation Region. 7757 7758Fixed a problem in the SystemMemory Operation Region handler where 7759an attempt was made to map memory beyond the end of the region. 7760This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY" 7761errors on some Linux systems. 7762 7763Fixed a problem where the interpreter/namespace "search to root" 7764algorithm was not functioning for some object types. Relaxed the 7765internal restriction on the search to allow upsearches for all 7766external object types as well as most internal types. 7767 7768 77692) Linux: 7770 7771We now use safe_halt() macro versus individual calls to sti | hlt. 7772 7773Writing to the processor limit interface should now work. "echo 1" 7774will increase the limit, 2 will decrease, and 0 will reset to the 7775 7776default. 7777 7778 77793) ASL compiler: 7780 7781Fixed segfault on Linux version. 7782 7783 7784---------------------------------------- 7785Summary of changes for this release: 02_25_02 7786 77871) ACPI CA Core Subsystem: 7788 7789 7790Fixed a problem where the GPE bit masks were not initialized 7791properly, causing erratic GPE behavior. 7792 7793Implemented limited support for multiple calling conventions. The 7794code can be generated with either the VPL (variable parameter 7795list, or "C") convention, or the FPL (fixed parameter list, or 7796"Pascal") convention. The core subsystem is about 3.4% smaller 7797when generated with FPL. 7798 7799 78002) Linux 7801 7802Re-add some /proc/acpi/event functionality that was lost during 7803the rewrite 7804 7805Resolved issue with /proc events for fixed-feature buttons showing 7806up as the system device. 7807 7808Fixed checks on C2/C3 latencies to be inclusive of maximum values. 7809 7810Replaced AE_ERRORs in acpi_osl.c with more specific error codes. 7811 7812Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi" 7813 7814Fixed limit interface & usage to fix bugs with passive cooling 7815hysterisis. 7816 7817Restructured PRT support. 7818 7819 7820---------------------------------------- 7821Summary of changes for this label: 02_14_02 7822 7823 78241) ACPI CA Core Subsystem: 7825 7826Implemented support in AcpiLoadTable to allow loading of FACS and 7827FADT tables. 7828 7829Suport for the now-obsolete interim 0.71 64-bit ACPI tables has 7830been removed. All 64-bit platforms should be migrated to the ACPI 78312.0 tables. The actbl71.h header has been removed from the source 7832tree. 7833 7834All C macros defined within the subsystem have been prefixed with 7835"ACPI_" to avoid collision with other system include files. 7836 7837Removed the return value for the two AcpiOsPrint interfaces, since 7838it is never used and causes lint warnings for ignoring the return 7839value. 7840 7841Added error checking to all internal mutex acquire and release 7842calls. Although a failure from one of these interfaces is 7843probably a fatal system error, these checks will cause the 7844immediate abort of the currently executing method or interface. 7845 7846Fixed a problem where the AcpiSetCurrentResources interface could 7847fault. This was a side effect of the deployment of the new memory 7848allocation model. 7849 7850Fixed a couple of problems with the Global Lock support introduced 7851in the last major build. The "common" (1.0/2.0) internal FACS was 7852being overwritten with the FACS signature and clobbering the 7853Global Lock pointer. Also, the actual firmware FACS was being 7854unmapped after construction of the "common" FACS, preventing 7855access to the actual Global Lock field within it. The "common" 7856internal FACS is no longer installed as an actual ACPI table; it 7857is used simply as a global. 7858 7859Code and Data Size: Current core subsystem library sizes are shown 7860below. These are the code and data sizes for the acpica.lib 7861produced by the Microsoft Visual C++ 6.0 compiler, and these 7862values do not include any ACPI driver or OSPM code. The debug 7863version of the code includes the debug output trace mechanism and 7864has a larger code and data size. Note that these values will vary 7865depending on the efficiency of the compiler and the compiler 7866options used during generation. 7867 7868 Previous Release (02_07_01) 7869 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 7870 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 7871 Current Release: 7872 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 7873 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 7874 7875 78762) Linux 7877 7878Updated Linux-specific code for core macro and OSL interface 7879changes described above. 7880 7881Improved /proc/acpi/event. It now can be opened only once and has 7882proper poll functionality. 7883 7884Fixed and restructured power management (acpi_bus). 7885 7886Only create /proc "view by type" when devices of that class exist. 7887 7888Fixed "charging/discharging" bug (and others) in acpi_battery. 7889 7890Improved thermal zone code. 7891 7892 78933) ASL Compiler, version X2039: 7894 7895 7896Implemented the new compiler restriction on ASL String hex/octal 7897escapes to non-null, ASCII values. An error results if an invalid 7898value is used. (This will require an ACPI 2.0 specification 7899change.) 7900 7901AML object labels that are output to the optional C and ASM source 7902are now prefixed with both the ACPI table signature and table ID 7903to help guarantee uniqueness within a large BIOS project. 7904 7905 7906---------------------------------------- 7907Summary of changes for this label: 02_01_02 7908 79091) ACPI CA Core Subsystem: 7910 7911ACPI 2.0 support is complete in the entire Core Subsystem and the 7912ASL compiler. All new ACPI 2.0 operators are implemented and all 7913other changes for ACPI 2.0 support are complete. With 7914simultaneous code and data optimizations throughout the subsystem, 7915ACPI 2.0 support has been implemented with almost no additional 7916cost in terms of code and data size. 7917 7918Implemented a new mechanism for allocation of return buffers. If 7919the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will 7920be allocated on behalf of the caller. Consolidated all return 7921buffer validation and allocation to a common procedure. Return 7922buffers will be allocated via the primary OSL allocation interface 7923since it appears that a separate pool is not needed by most users. 7924If a separate pool is required for these buffers, the caller can 7925still use the original mechanism and pre-allocate the buffer(s). 7926 7927Implemented support for string operands within the DerefOf 7928operator. 7929 7930Restructured the Hardware and Event managers to be table driven, 7931simplifying the source code and reducing the amount of generated 7932code. 7933 7934Split the common read/write low-level ACPI register bitfield 7935procedure into a separate read and write, simplifying the code 7936considerably. 7937 7938Obsoleted the AcpiOsCallocate OSL interface. This interface was 7939used only a handful of times and didn't have enough critical mass 7940for a separate interface. Replaced with a common calloc procedure 7941in the core. 7942 7943Fixed a reported problem with the GPE number mapping mechanism 7944that allows GPE1 numbers to be non-contiguous with GPE0. 7945Reorganized the GPE information and shrunk a large array that was 7946originally large enough to hold info for all possible GPEs (256) 7947to simply large enough to hold all GPEs up to the largest GPE 7948number on the machine. 7949 7950Fixed a reported problem with resource structure alignment on 64- 7951bit platforms. 7952 7953Changed the AcpiEnableEvent and AcpiDisableEvent external 7954interfaces to not require any flags for the common case of 7955enabling/disabling a GPE. 7956 7957Implemented support to allow a "Notify" on a Processor object. 7958 7959Most TBDs in comments within the source code have been resolved 7960and eliminated. 7961 7962 7963Fixed a problem in the interpreter where a standalone parent 7964prefix (^) was not handled correctly in the interpreter and 7965debugger. 7966 7967Removed obsolete and unnecessary GPE save/restore code. 7968 7969Implemented Field support in the ASL Load operator. This allows a 7970table to be loaded from a named field, in addition to loading a 7971table directly from an Operation Region. 7972 7973Implemented timeout and handle support in the external Global Lock 7974interfaces. 7975 7976Fixed a problem in the AcpiDump utility where pathnames were no 7977longer being generated correctly during the dump of named objects. 7978 7979Modified the AML debugger to give a full display of if/while 7980predicates instead of just one AML opcode at a time. (The 7981predicate can have several nested ASL statements.) The old method 7982was confusing during single stepping. 7983 7984Code and Data Size: Current core subsystem library sizes are shown 7985below. These are the code and data sizes for the acpica.lib 7986produced by the Microsoft Visual C++ 6.0 compiler, and these 7987values do not include any ACPI driver or OSPM code. The debug 7988version of the code includes the debug output trace mechanism and 7989has a larger code and data size. Note that these values will vary 7990depending on the efficiency of the compiler and the compiler 7991options used during generation. 7992 7993 Previous Release (12_18_01) 7994 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 7995 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 7996 Current Release: 7997 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 7998 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 7999 80002) Linux 8001 8002 Implemented fix for PIIX reverse throttling errata (Processor 8003driver) 8004 8005Added new Limit interface (Processor and Thermal drivers) 8006 8007New thermal policy (Thermal driver) 8008 8009Many updates to /proc 8010 8011Battery "low" event support (Battery driver) 8012 8013Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers) 8014 8015IA32 - IA64 initialization unification, no longer experimental 8016 8017Menuconfig options redesigned 8018 80193) ASL Compiler, version X2037: 8020 8021Implemented several new output features to simplify integration of 8022AML code into firmware: 1) Output the AML in C source code with 8023labels for each named ASL object. The original ASL source code 8024is interleaved as C comments. 2) Output the AML in ASM source code 8025with labels and interleaved ASL source. 3) Output the AML in 8026raw hex table form, in either C or ASM. 8027 8028Implemented support for optional string parameters to the 8029LoadTable operator. 8030 8031Completed support for embedded escape sequences within string 8032literals. The compiler now supports all single character escapes 8033as well as the Octal and Hex escapes. Note: the insertion of a 8034null byte into a string literal (via the hex/octal escape) causes 8035the string to be immediately terminated. A warning is issued. 8036 8037Fixed a problem where incorrect AML was generated for the case 8038where an ASL namepath consists of a single parent prefix ( 8039 8040) with no trailing name segments. 8041 8042The compiler has been successfully generated with a 64-bit C 8043compiler. 8044 8045 8046 8047 8048---------------------------------------- 8049Summary of changes for this label: 12_18_01 8050 80511) Linux 8052 8053Enhanced blacklist with reason and severity fields. Any table's 8054signature may now be used to identify a blacklisted system. 8055 8056Call _PIC control method to inform the firmware which interrupt 8057model the OS is using. Turn on any disabled link devices. 8058 8059Cleaned up busmgr /proc error handling (Andreas Dilger) 8060 8061 2) ACPI CA Core Subsystem: 8062 8063Implemented ACPI 2.0 semantics for the "Break" operator (Exit from 8064while loop) 8065 8066Completed implementation of the ACPI 2.0 "Continue", 8067"ConcatenateResTemplate", "DataTableRegion", and "LoadTable" 8068operators. All new ACPI 2.0 operators are now implemented in both 8069the ASL compiler and the AML interpreter. The only remaining ACPI 80702.0 task is support for the String data type in the DerefOf 8071operator. Fixed a problem with AcquireMutex where the status code 8072was lost if the caller had to actually wait for the mutex. 8073 8074Increased the maximum ASL Field size from 64K bits to 4G bits. 8075 8076Completed implementation of the external Global Lock interfaces -- 8077AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and 8078Handler parameters were added. 8079 8080Completed another pass at removing warnings and issues when 8081compiling with 64-bit compilers. The code now compiles cleanly 8082with the Intel 64-bit C/C++ compiler. Most notably, the pointer 8083add and subtract (diff) macros have changed considerably. 8084 8085 8086Created and deployed a new ACPI_SIZE type that is 64-bits wide on 808764-bit platforms, 32-bits on all others. This type is used 8088wherever memory allocation and/or the C sizeof() operator is used, 8089and affects the OSL memory allocation interfaces AcpiOsAllocate 8090and AcpiOsCallocate. 8091 8092Implemented sticky user breakpoints in the AML debugger. 8093 8094Code and Data Size: Current core subsystem library sizes are shown 8095below. These are the code and data sizes for the acpica.lib 8096produced by the Microsoft Visual C++ 6.0 compiler, and these 8097values do not include any ACPI driver or OSPM code. The debug 8098version of the code includes the debug output trace mechanism and 8099has a larger code and data size. Note that these values will vary 8100depending on the efficiency of the compiler and the compiler 8101options used during generation. 8102 8103 Previous Release (12_05_01) 8104 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 8105 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 8106 Current Release: 8107 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 8108 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 8109 8110 3) ASL Compiler, version X2034: 8111 8112Now checks for (and generates an error if detected) the use of a 8113Break or Continue statement without an enclosing While statement. 8114 8115 8116Successfully generated the compiler with the Intel 64-bit C 8117compiler. 8118 8119 ---------------------------------------- 8120Summary of changes for this label: 12_05_01 8121 8122 1) ACPI CA Core Subsystem: 8123 8124The ACPI 2.0 CopyObject operator is fully implemented. This 8125operator creates a new copy of an object (and is also used to 8126bypass the "implicit conversion" mechanism of the Store operator.) 8127 8128The ACPI 2.0 semantics for the SizeOf operator are fully 8129implemented. The change is that performing a SizeOf on a 8130reference object causes an automatic dereference of the object to 8131tha actual value before the size is evaluated. This behavior was 8132undefined in ACPI 1.0. 8133 8134The ACPI 2.0 semantics for the Extended IRQ resource descriptor 8135have been implemented. The interrupt polarity and mode are now 8136independently set. 8137 8138Fixed a problem where ASL Constants (Zero, One, Ones, Revision) 8139appearing in Package objects were not properly converted to 8140integers when the internal Package was converted to an external 8141object (via the AcpiEvaluateObject interface.) 8142 8143Fixed a problem with the namespace object deletion mechanism for 8144objects created by control methods. There were two parts to this 8145problem: 1) Objects created during the initialization phase method 8146parse were not being deleted, and 2) The object owner ID mechanism 8147to track objects was broken. 8148 8149Fixed a problem where the use of the ASL Scope operator within a 8150control method would result in an invalid opcode exception. 8151 8152Fixed a problem introduced in the previous label where the buffer 8153length required for the _PRT structure was not being returned 8154correctly. 8155 8156Code and Data Size: Current core subsystem library sizes are shown 8157below. These are the code and data sizes for the acpica.lib 8158produced by the Microsoft Visual C++ 6.0 compiler, and these 8159values do not include any ACPI driver or OSPM code. The debug 8160version of the code includes the debug output trace mechanism and 8161has a larger code and data size. Note that these values will vary 8162depending on the efficiency of the compiler and the compiler 8163options used during generation. 8164 8165 Previous Release (11_20_01) 8166 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 8167 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 8168 8169 Current Release: 8170 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 8171 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 8172 8173 2) Linux: 8174 8175Updated all files to apply cleanly against 2.4.16. 8176 8177Added basic PCI Interrupt Routing Table (PRT) support for IA32 8178(acpi_pci.c), and unified the PRT code for IA32 and IA64. This 8179version supports both static and dyanmic PRT entries, but dynamic 8180entries are treated as if they were static (not yet 8181reconfigurable). Architecture- specific code to use this data is 8182absent on IA32 but should be available shortly. 8183 8184Changed the initialization sequence to start the ACPI interpreter 8185(acpi_init) prior to initialization of the PCI driver (pci_init) 8186in init/main.c. This ordering is required to support PRT and 8187facilitate other (future) enhancement. A side effect is that the 8188ACPI bus driver and certain device drivers can no longer be loaded 8189as modules. 8190 8191Modified the 'make menuconfig' options to allow PCI Interrupt 8192Routing support to be included without the ACPI Bus and other 8193device drivers. 8194 8195 3) ASL Compiler, version X2033: 8196 8197Fixed some issues with the use of the new CopyObject and 8198DataTableRegion operators. Both are fully functional. 8199 8200 ---------------------------------------- 8201Summary of changes for this label: 11_20_01 8202 8203 20 November 2001. Summary of changes for this release. 8204 8205 1) ACPI CA Core Subsystem: 8206 8207Updated Index support to match ACPI 2.0 semantics. Storing a 8208Integer, String, or Buffer to an Index of a Buffer will store only 8209the least-significant byte of the source to the Indexed buffer 8210byte. Multiple writes are not performed. 8211 8212Fixed a problem where the access type used in an AccessAs ASL 8213operator was not recorded correctly into the field object. 8214 8215Fixed a problem where ASL Event objects were created in a 8216signalled state. Events are now created in an unsignalled state. 8217 8218The internal object cache is now purged after table loading and 8219initialization to reduce the use of dynamic kernel memory -- on 8220the assumption that object use is greatest during the parse phase 8221of the entire table (versus the run-time use of individual control 8222methods.) 8223 8224ACPI 2.0 variable-length packages are now fully operational. 8225 8226Code and Data Size: Code and Data optimizations have permitted new 8227feature development with an actual reduction in the library size. 8228Current core subsystem library sizes are shown below. These are 8229the code and data sizes for the acpica.lib produced by the 8230Microsoft Visual C++ 6.0 compiler, and these values do not include 8231any ACPI driver or OSPM code. The debug version of the code 8232includes the debug output trace mechanism and has a larger code 8233and data size. Note that these values will vary depending on the 8234efficiency of the compiler and the compiler options used during 8235generation. 8236 8237 Previous Release (11_09_01): 8238 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 8239 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 8240 8241 Current Release: 8242 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 8243 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 8244 8245 2) Linux: 8246 8247Enhanced the ACPI boot-time initialization code to allow the use 8248of Local APIC tables for processor enumeration on IA-32, and to 8249pave the way for a fully MPS-free boot (on SMP systems) in the 8250near future. This functionality replaces 8251arch/i386/kernel/acpitables.c, which was introduced in an earlier 82522.4.15-preX release. To enable this feature you must add 8253"acpi_boot=on" to the kernel command line -- see the help entry 8254for CONFIG_ACPI_BOOT for more information. An IA-64 release is in 8255the works... 8256 8257Restructured the configuration options to allow boot-time table 8258parsing support without inclusion of the ACPI Interpreter (and 8259other) code. 8260 8261NOTE: This release does not include fixes for the reported events, 8262power-down, and thermal passive cooling issues (coming soon). 8263 8264 3) ASL Compiler: 8265 8266Added additional typechecking for Fields within restricted access 8267Operation Regions. All fields within EC and CMOS regions must be 8268declared with ByteAcc. All fields withing SMBus regions must be 8269declared with the BufferAcc access type. 8270 8271Fixed a problem where the listing file output of control methods 8272no longer interleaved the actual AML code with the ASL source 8273code. 8274 8275 8276 8277 8278---------------------------------------- 8279Summary of changes for this label: 11_09_01 8280 82811) ACPI CA Core Subsystem: 8282 8283Implemented ACPI 2.0-defined support for writes to fields with a 8284Buffer, String, or Integer source operand that is smaller than the 8285target field. In these cases, the source operand is zero-extended 8286to fill the target field. 8287 8288Fixed a problem where a Field starting bit offset (within the 8289parent operation region) was calculated incorrectly if the 8290 8291alignment of the field differed from the access width. This 8292affected CreateWordField, CreateDwordField, CreateQwordField, and 8293possibly other fields that use the "AccessAny" keyword. 8294 8295Fixed a problem introduced in the 11_02_01 release where indirect 8296stores through method arguments did not operate correctly. 8297 82982) Linux: 8299 8300Implemented boot-time ACPI table parsing support 8301(CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code 8302facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than 8303legacy BIOS interfaces (e.g. MPS) for the configuration of system 8304processors, memory, and interrupts during setup_arch(). Note that 8305this patch does not include the required architecture-specific 8306changes required to apply this information -- subsequent patches 8307will be posted for both IA32 and IA64 to achieve this. 8308 8309Added low-level sleep support for IA32 platforms, courtesy of Pat 8310Mochel. This allows IA32 systems to transition to/from various 8311sleeping states (e.g. S1, S3), although the lack of a centralized 8312driver model and power-manageable drivers will prevent its 8313(successful) use on most systems. 8314 8315Revamped the ACPI 'menuconfig' layout: created new "ACPI Support" 8316submenu, unified IA32 and IA64 options, added new "Boot using ACPI 8317tables" option, etc. 8318 8319Increased the default timeout for the EC driver from 1ms to 10ms 8320(1000 cycles of 10us) to try to address AE_TIME errors during EC 8321transactions. 8322 8323 ---------------------------------------- 8324Summary of changes for this label: 11_02_01 8325 83261) ACPI CA Core Subsystem: 8327 8328ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access 8329(QWordAcc keyword). All ACPI 2.0 64-bit support is now 8330implemented. 8331 8332OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required 8333changes to support ACPI 2.0 Qword field access. Read/Write 8334PciConfiguration(), Read/Write Memory(), and Read/Write Port() now 8335accept an ACPI_INTEGER (64 bits) as the value parameter. Also, 8336the value parameter for the address space handler interface is now 8337an ACPI_INTEGER. OSL implementations of these interfaces must now 8338handle the case where the Width parameter is 64. 8339 8340Index Fields: Fixed a problem where unaligned bit assembly and 8341disassembly for IndexFields was not supported correctly. 8342 8343Index and Bank Fields: Nested Index and Bank Fields are now 8344supported. During field access, a check is performed to ensure 8345that the value written to an Index or Bank register is not out of 8346the range of the register. The Index (or Bank) register is 8347written before each access to the field data. Future support will 8348include allowing individual IndexFields to be wider than the 8349DataRegister width. 8350 8351Fields: Fixed a problem where the AML interpreter was incorrectly 8352attempting to write beyond the end of a Field/OpRegion. This was 8353a boundary case that occurred when a DWORD field was written to a 8354BYTE access OpRegion, forcing multiple writes and causing the 8355interpreter to write one datum too many. 8356 8357Fields: Fixed a problem with Field/OpRegion access where the 8358starting bit address of a field was incorrectly calculated if the 8359current access type was wider than a byte (WordAcc, DwordAcc, or 8360QwordAcc). 8361 8362Fields: Fixed a problem where forward references to individual 8363FieldUnits (individual Field names within a Field definition) were 8364not resolved during the AML table load. 8365 8366Fields: Fixed a problem where forward references from a Field 8367definition to the parent Operation Region definition were not 8368resolved during the AML table load. 8369 8370Fields: Duplicate FieldUnit names within a scope are now detected 8371during AML table load. 8372 8373Acpi Interfaces: Fixed a problem where the AcpiGetName() interface 8374returned an incorrect name for the root node. 8375 8376Code and Data Size: Code and Data optimizations have permitted new 8377feature development with an actual reduction in the library size. 8378Current core subsystem library sizes are shown below. These are 8379the code and data sizes for the acpica.lib produced by the 8380Microsoft Visual C++ 6.0 compiler, and these values do not include 8381any ACPI driver or OSPM code. The debug version of the code 8382includes the debug output trace mechanism and has a larger code 8383and data size. Note that these values will vary depending on the 8384efficiency of the compiler and the compiler options used during 8385generation. 8386 8387 Previous Release (10_18_01): 8388 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 8389 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 8390 8391 Current Release: 8392 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 8393 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 8394 8395 2) Linux: 8396 8397Improved /proc processor output (Pavel Machek) Re-added 8398MODULE_LICENSE("GPL") to all modules. 8399 8400 3) ASL Compiler version X2030: 8401 8402Duplicate FieldUnit names within a scope are now detected and 8403flagged as errors. 8404 8405 4) Documentation: 8406 8407Programmer Reference updated to reflect OSL and address space 8408handler interface changes described above. 8409 8410---------------------------------------- 8411Summary of changes for this label: 10_18_01 8412 8413ACPI CA Core Subsystem: 8414 8415Fixed a problem with the internal object reference count mechanism 8416that occasionally caused premature object deletion. This resolves 8417all of the outstanding problem reports where an object is deleted 8418in the middle of an interpreter evaluation. Although this problem 8419only showed up in rather obscure cases, the solution to the 8420problem involved an adjustment of all reference counts involving 8421objects attached to namespace nodes. 8422 8423Fixed a problem with Field support in the interpreter where 8424writing to an aligned field whose length is an exact multiple (2 8425or greater) of the field access granularity would cause an attempt 8426to write beyond the end of the field. 8427 8428The top level AML opcode execution functions within the 8429interpreter have been renamed with a more meaningful and 8430consistent naming convention. The modules exmonad.c and 8431exdyadic.c were eliminated. New modules are exoparg1.c, 8432exoparg2.c, exoparg3.c, and exoparg6.c. 8433 8434Support for the ACPI 2.0 "Mid" ASL operator has been implemented. 8435 8436Fixed a problem where the AML debugger was causing some internal 8437objects to not be deleted during subsystem termination. 8438 8439Fixed a problem with the external AcpiEvaluateObject interface 8440where the subsystem would fault if the named object to be 8441evaluated refered to a constant such as Zero, Ones, etc. 8442 8443Fixed a problem with IndexFields and BankFields where the 8444subsystem would fault if the index, data, or bank registers were 8445not defined in the same scope as the field itself. 8446 8447Added printf format string checking for compilers that support 8448this feature. Corrected more than 50 instances of issues with 8449format specifiers within invocations of ACPI_DEBUG_PRINT 8450throughout the core subsystem code. 8451 8452The ASL "Revision" operator now returns the ACPI support level 8453implemented in the core - the value "2" since the ACPI 2.0 support 8454is more than 50% implemented. 8455 8456Enhanced the output of the AML debugger "dump namespace" command 8457to output in a more human-readable form. 8458 8459Current core subsystem library code sizes are shown below. These 8460 8461are the code and data sizes for the acpica.lib produced by the 8462Microsoft Visual C++ 6.0 compiler, and these values do not include 8463any ACPI driver or OSPM code. The debug version of the code 8464includes the full debug trace mechanism -- leading to a much 8465 8466larger code and data size. Note that these values will vary 8467depending on the efficiency of the compiler and the compiler 8468options used during generation. 8469 8470 Previous Label (09_20_01): 8471 Non-Debug Version: 65K Code, 5K Data, 70K Total 8472 Debug Version: 138K Code, 58K Data, 196K Total 8473 8474 This Label: 8475 8476 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 8477 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 8478 8479Linux: 8480 8481Implemented a "Bad BIOS Blacklist" to track machines that have 8482known ASL/AML problems. 8483 8484Enhanced the /proc interface for the thermal zone driver and added 8485support for _HOT (the critical suspend trip point). The 'info' 8486file now includes threshold/policy information, and allows setting 8487of _SCP (cooling preference) and _TZP (polling frequency) values 8488to the 'info' file. Examples: "echo tzp=5 > info" sets the polling 8489frequency to 5 seconds, and "echo scp=1 > info" sets the cooling 8490preference to the passive/quiet mode (if supported by the ASL). 8491 8492Implemented a workaround for a gcc bug that resuted in an OOPs 8493when loading the control method battery driver. 8494 8495 ---------------------------------------- 8496Summary of changes for this label: 09_20_01 8497 8498 ACPI CA Core Subsystem: 8499 8500The AcpiEnableEvent and AcpiDisableEvent interfaces have been 8501modified to allow individual GPE levels to be flagged as wake- 8502enabled (i.e., these GPEs are to remain enabled when the platform 8503sleeps.) 8504 8505The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now 8506support wake-enabled GPEs. This means that upon entering the 8507sleep state, all GPEs that are not wake-enabled are disabled. 8508When leaving the sleep state, these GPEs are reenabled. 8509 8510A local double-precision divide/modulo module has been added to 8511enhance portability to OS kernels where a 64-bit math library is 8512not available. The new module is "utmath.c". 8513 8514Several optimizations have been made to reduce the use of CPU 8515stack. Originally over 2K, the maximum stack usage is now below 85162K at 1860 bytes (1.82k) 8517 8518Fixed a problem with the AcpiGetFirmwareTable interface where the 8519root table pointer was not mapped into a logical address properly. 8520 8521Fixed a problem where a NULL pointer was being dereferenced in the 8522interpreter code for the ASL Notify operator. 8523 8524Fixed a problem where the use of the ASL Revision operator 8525returned an error. This operator now returns the current version 8526of the ACPI CA core subsystem. 8527 8528Fixed a problem where objects passed as control method parameters 8529to AcpiEvaluateObject were always deleted at method termination. 8530However, these objects may end up being stored into the namespace 8531by the called method. The object reference count mechanism was 8532applied to these objects instead of a force delete. 8533 8534Fixed a problem where static strings or buffers (contained in the 8535AML code) that are declared as package elements within the ASL 8536code could cause a fault because the interpreter would attempt to 8537delete them. These objects are now marked with the "static 8538object" flag to prevent any attempt to delete them. 8539 8540Implemented an interpreter optimization to use operands directly 8541from the state object instead of extracting the operands to local 8542variables. This reduces stack use and code size, and improves 8543performance. 8544 8545The module exxface.c was eliminated as it was an unnecessary extra 8546layer of code. 8547 8548Current core subsystem library code sizes are shown below. These 8549are the code and data sizes for the acpica.lib produced by the 8550Microsoft Visual C++ 6.0 compiler, and these values do not include 8551any ACPI driver or OSPM code. The debug version of the code 8552includes the full debug trace mechanism -- leading to a much 8553larger code and data size. Note that these values will vary 8554depending on the efficiency of the compiler and the compiler 8555options used during generation. 8556 8557 Non-Debug Version: 65K Code, 5K Data, 70K Total 8558(Previously 69K) Debug Version: 138K Code, 58K Data, 196K 8559Total (Previously 195K) 8560 8561Linux: 8562 8563Support for ACPI 2.0 64-bit integers has been added. All ACPI 8564Integer objects are now 64 bits wide 8565 8566All Acpi data types and structures are now in lower case. Only 8567Acpi macros are upper case for differentiation. 8568 8569 Documentation: 8570 8571Changes to the external interfaces as described above. 8572 8573 ---------------------------------------- 8574Summary of changes for this label: 08_31_01 8575 8576 ACPI CA Core Subsystem: 8577 8578A bug with interpreter implementation of the ASL Divide operator 8579was found and fixed. The implicit function return value (not the 8580explicit store operands) was returning the remainder instead of 8581the quotient. This was a longstanding bug and it fixes several 8582known outstanding issues on various platforms. 8583 8584The ACPI_DEBUG_PRINT and function trace entry/exit macros have 8585been further optimized for size. There are 700 invocations of the 8586DEBUG_PRINT macro alone, so each optimization reduces the size of 8587the debug version of the subsystem significantly. 8588 8589A stack trace mechanism has been implemented. The maximum stack 8590usage is about 2K on 32-bit platforms. The debugger command "stat 8591stack" will display the current maximum stack usage. 8592 8593All public symbols and global variables within the subsystem are 8594now prefixed with the string "Acpi". This keeps all of the 8595symbols grouped together in a kernel map, and avoids conflicts 8596with other kernel subsystems. 8597 8598Most of the internal fixed lookup tables have been moved into the 8599code segment via the const operator. 8600 8601Several enhancements have been made to the interpreter to both 8602reduce the code size and improve performance. 8603 8604Current core subsystem library code sizes are shown below. These 8605are the code and data sizes for the acpica.lib produced by the 8606Microsoft Visual C++ 6.0 compiler, and these values do not include 8607any ACPI driver or OSPM code. The debug version of the code 8608includes the full debug trace mechanism which contains over 700 8609invocations of the DEBUG_PRINT macro, 500 function entry macro 8610invocations, and over 900 function exit macro invocations -- 8611leading to a much larger code and data size. Note that these 8612values will vary depending on the efficiency of the compiler and 8613the compiler options used during generation. 8614 8615 Non-Debug Version: 64K Code, 5K Data, 69K Total 8616Debug Version: 137K Code, 58K Data, 195K Total 8617 8618 Linux: 8619 8620Implemented wbinvd() macro, pending a kernel-wide definition. 8621 8622Fixed /proc/acpi/event to handle poll() and short reads. 8623 8624 ASL Compiler, version X2026: 8625 8626Fixed a problem introduced in the previous label where the AML 8627 8628code emitted for package objects produced packages with zero 8629length. 8630 8631 ---------------------------------------- 8632Summary of changes for this label: 08_16_01 8633 8634ACPI CA Core Subsystem: 8635 8636The following ACPI 2.0 ASL operators have been implemented in the 8637AML interpreter (These are already supported by the Intel ASL 8638compiler): ToDecimalString, ToHexString, ToString, ToInteger, and 8639ToBuffer. Support for 64-bit AML constants is implemented in the 8640AML parser, debugger, and disassembler. 8641 8642The internal memory tracking mechanism (leak detection code) has 8643been upgraded to reduce the memory overhead (a separate tracking 8644block is no longer allocated for each memory allocation), and now 8645supports all of the internal object caches. 8646 8647The data structures and code for the internal object caches have 8648been coelesced and optimized so that there is a single cache and 8649memory list data structure and a single group of functions that 8650implement generic cache management. This has reduced the code 8651size in both the debug and release versions of the subsystem. 8652 8653The DEBUG_PRINT macro(s) have been optimized for size and replaced 8654by ACPI_DEBUG_PRINT. The syntax for this macro is slightly 8655different, because it generates a single call to an internal 8656function. This results in a savings of about 90 bytes per 8657invocation, resulting in an overall code and data savings of about 865816% in the debug version of the subsystem. 8659 8660 Linux: 8661 8662Fixed C3 disk corruption problems and re-enabled C3 on supporting 8663machines. 8664 8665Integrated low-level sleep code by Patrick Mochel. 8666 8667Further tweaked source code Linuxization. 8668 8669Other minor fixes. 8670 8671 ASL Compiler: 8672 8673Support for ACPI 2.0 variable length packages is fixed/completed. 8674 8675Fixed a problem where the optional length parameter for the ACPI 86762.0 ToString operator. 8677 8678Fixed multiple extraneous error messages when a syntax error is 8679detected within the declaration line of a control method. 8680 8681 ---------------------------------------- 8682Summary of changes for this label: 07_17_01 8683 8684ACPI CA Core Subsystem: 8685 8686Added a new interface named AcpiGetFirmwareTable to obtain any 8687ACPI table via the ACPI signature. The interface can be called at 8688any time during kernel initialization, even before the kernel 8689virtual memory manager is initialized and paging is enabled. This 8690allows kernel subsystems to obtain ACPI tables very early, even 8691before the ACPI CA subsystem is initialized. 8692 8693Fixed a problem where Fields defined with the AnyAcc attribute 8694could be resolved to the incorrect address under the following 8695conditions: 1) the field width is larger than 8 bits and 2) the 8696parent operation region is not defined on a DWORD boundary. 8697 8698Fixed a problem where the interpreter is not being locked during 8699namespace initialization (during execution of the _INI control 8700methods), causing an error when an attempt is made to release it 8701later. 8702 8703ACPI 2.0 support in the AML Interpreter has begun and will be 8704ongoing throughout the rest of this year. In this label, The Mod 8705operator is implemented. 8706 8707Added a new data type to contain full PCI addresses named 8708ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device, 8709and Function values. 8710 8711 Linux: 8712 8713Enhanced the Linux version of the source code to change most 8714capitalized ACPI type names to lowercase. For example, all 8715instances of ACPI_STATUS are changed to acpi_status. This will 8716result in a large diff, but the change is strictly cosmetic and 8717aligns the CA code closer to the Linux coding standard. 8718 8719OSL Interfaces: 8720 8721The interfaces to the PCI configuration space have been changed to 8722add the PCI Segment number and to split the single 32-bit combined 8723DeviceFunction field into two 16-bit fields. This was 8724accomplished by moving the four values that define an address in 8725PCI configuration space (segment, bus, device, and function) to 8726the new ACPI_PCI_ID structure. 8727 8728The changes to the PCI configuration space interfaces led to a 8729reexamination of the complete set of address space access 8730interfaces for PCI, I/O, and Memory. The previously existing 18 8731interfaces have proven difficult to maintain (any small change 8732must be propagated across at least 6 interfaces) and do not easily 8733allow for future expansion to 64 bits if necessary. Also, on some 8734systems, it would not be appropriate to demultiplex the access 8735width (8, 16, 32,or 64) before calling the OSL if the 8736corresponding native OS interfaces contain a similar access width 8737parameter. For these reasons, the 18 address space interfaces 8738have been replaced by these 6 new ones: 8739 8740AcpiOsReadPciConfiguration 8741AcpiOsWritePciConfiguration 8742AcpiOsReadMemory 8743AcpiOsWriteMemory 8744AcpiOsReadPort 8745AcpiOsWritePort 8746 8747Added a new interface named AcpiOsGetRootPointer to allow the OSL 8748to perform the platform and/or OS-specific actions necessary to 8749obtain the ACPI RSDP table pointer. On IA-32 platforms, this 8750interface will simply call down to the CA core to perform the low- 8751memory search for the table. On IA-64, the RSDP is obtained from 8752EFI. Migrating this interface to the OSL allows the CA core to 8753 8754remain OS and platform independent. 8755 8756Added a new interface named AcpiOsSignal to provide a generic 8757"function code and pointer" interface for various miscellaneous 8758signals and notifications that must be made to the host OS. The 8759first such signals are intended to support the ASL Fatal and 8760Breakpoint operators. In the latter case, the AcpiOsBreakpoint 8761interface has been obsoleted. 8762 8763The definition of the AcpiFormatException interface has been 8764changed to simplify its use. The caller no longer must supply a 8765buffer to the call; A pointer to a const string is now returned 8766directly. This allows the call to be easily used in printf 8767statements, etc. since the caller does not have to manage a local 8768buffer. 8769 8770 8771 ASL Compiler, Version X2025: 8772 8773The ACPI 2.0 Switch/Case/Default operators have been implemented 8774and are fully functional. They will work with all ACPI 1.0 8775interpreters, since the operators are simply translated to If/Else 8776pairs. 8777 8778The ACPI 2.0 ElseIf operator is implemented and will also work 8779with 1.0 interpreters, for the same reason. 8780 8781Implemented support for ACPI 2.0 variable-length packages. These 8782packages have a separate opcode, and their size is determined by 8783the interpreter at run-time. 8784 8785Documentation The ACPI CA Programmer Reference has been updated to 8786reflect the new interfaces and changes to existing interfaces. 8787 8788 ------------------------------------------ 8789Summary of changes for this label: 06_15_01 8790 8791 ACPI CA Core Subsystem: 8792 8793Fixed a problem where a DWORD-accessed field within a Buffer 8794object would get its byte address inadvertently rounded down to 8795the nearest DWORD. Buffers are always Byte-accessible. 8796 8797 ASL Compiler, version X2024: 8798 8799Fixed a problem where the Switch() operator would either fault or 8800hang the compiler. Note however, that the AML code for this ACPI 88012.0 operator is not yet implemented. 8802 8803Compiler uses the new AcpiOsGetTimer interface to obtain compile 8804timings. 8805 8806Implementation of the CreateField operator automatically converts 8807a reference to a named field within a resource descriptor from a 8808byte offset to a bit offset if required. 8809 8810Added some missing named fields from the resource descriptor 8811support. These are the names that are automatically created by the 8812compiler to reference fields within a descriptor. They are only 8813valid at compile time and are not passed through to the AML 8814interpreter. 8815 8816Resource descriptor named fields are now typed as Integers and 8817subject to compile-time typechecking when used in expressions. 8818 8819 ------------------------------------------ 8820Summary of changes for this label: 05_18_01 8821 8822 ACPI CA Core Subsystem: 8823 8824Fixed a couple of problems in the Field support code where bits 8825from adjacent fields could be returned along with the proper field 8826bits. Restructured the field support code to improve performance, 8827readability and maintainability. 8828 8829New DEBUG_PRINTP macro automatically inserts the procedure name 8830into the output, saving hundreds of copies of procedure name 8831strings within the source, shrinking the memory footprint of the 8832debug version of the core subsystem. 8833 8834 Source Code Structure: 8835 8836The source code directory tree was restructured to reflect the 8837current organization of the component architecture. Some files 8838and directories have been moved and/or renamed. 8839 8840 Linux: 8841 8842Fixed leaking kacpidpc processes. 8843 8844Fixed queueing event data even when /proc/acpi/event is not 8845opened. 8846 8847 ASL Compiler, version X2020: 8848 8849Memory allocation performance enhancement - over 24X compile time 8850improvement on large ASL files. Parse nodes and namestring 8851buffers are now allocated from a large internal compiler buffer. 8852 8853The temporary .SRC file is deleted unless the "-s" option is 8854specified 8855 8856The "-d" debug output option now sends all output to the .DBG file 8857instead of the console. 8858 8859"External" second parameter is now optional 8860 8861"ElseIf" syntax now properly allows the predicate 8862 8863Last operand to "Load" now recognized as a Target operand 8864 8865Debug object can now be used anywhere as a normal object. 8866 8867ResourceTemplate now returns an object of type BUFFER 8868 8869EISAID now returns an object of type INTEGER 8870 8871"Index" now works with a STRING operand 8872 8873"LoadTable" now accepts optional parameters 8874 8875"ToString" length parameter is now optional 8876 8877"Interrupt (ResourceType," parse error fixed. 8878 8879"Register" with a user-defined region space parse error fixed 8880 8881Escaped backslash at the end of a string ("\\") scan/parse error 8882fixed 8883 8884"Revision" is now an object of type INTEGER. 8885 8886 8887 8888------------------------------------------ 8889Summary of changes for this label: 05_02_01 8890 8891Linux: 8892 8893/proc/acpi/event now blocks properly. 8894 8895Removed /proc/sys/acpi. You can still dump your DSDT from 8896/proc/acpi/dsdt. 8897 8898 ACPI CA Core Subsystem: 8899 8900Fixed a problem introduced in the previous label where some of the 8901"small" resource descriptor types were not recognized. 8902 8903Improved error messages for the case where an ASL Field is outside 8904the range of the parent operation region. 8905 8906 ASL Compiler, version X2018: 8907 8908 8909Added error detection for ASL Fields that extend beyond the length 8910of the parent operation region (only if the length of the region 8911is known at compile time.) This includes fields that have a 8912minimum access width that is smaller than the parent region, and 8913individual field units that are partially or entirely beyond the 8914extent of the parent. 8915 8916 8917 8918------------------------------------------ 8919Summary of changes for this label: 04_27_01 8920 8921 ACPI CA Core Subsystem: 8922 8923Fixed a problem where the namespace mutex could be released at the 8924wrong time during execution of AcpiRemoveAddressSpaceHandler. 8925 8926Added optional thread ID output for debug traces, to simplify 8927debugging of multiple threads. Added context switch notification 8928when the debug code realizes that a different thread is now 8929executing ACPI code. 8930 8931Some additional external data types have been prefixed with the 8932string "ACPI_" for consistency. This may effect existing code. 8933The data types affected are the external callback typedefs - e.g., 8934 8935WALK_CALLBACK becomes ACPI_WALK_CALLBACK. 8936 8937 Linux: 8938 8939Fixed an issue with the OSL semaphore implementation where a 8940thread was waking up with an error from receiving a SIGCHLD 8941signal. 8942 8943Linux version of ACPI CA now uses the system C library for string 8944manipulation routines instead of a local implementation. 8945 8946Cleaned up comments and removed TBDs. 8947 8948 ASL Compiler, version X2017: 8949 8950Enhanced error detection and reporting for all file I/O 8951operations. 8952 8953 Documentation: 8954 8955Programmer Reference updated to version 1.06. 8956 8957 8958 8959------------------------------------------ 8960Summary of changes for this label: 04_13_01 8961 8962 ACPI CA Core Subsystem: 8963 8964Restructured support for BufferFields and RegionFields. 8965BankFields support is now fully operational. All known 32-bit 8966limitations on field sizes have been removed. Both BufferFields 8967and (Operation) RegionFields are now supported by the same field 8968management code. 8969 8970Resource support now supports QWORD address and IO resources. The 897116/32/64 bit address structures and the Extended IRQ structure 8972have been changed to properly handle Source Resource strings. 8973 8974A ThreadId of -1 is now used to indicate a "mutex not acquired" 8975condition internally and must never be returned by AcpiOsThreadId. 8976This reserved value was changed from 0 since Unix systems allow a 8977thread ID of 0. 8978 8979Linux: 8980 8981Driver code reorganized to enhance portability 8982 8983Added a kernel configuration option to control ACPI_DEBUG 8984 8985Fixed the EC driver to honor _GLK. 8986 8987ASL Compiler, version X2016: 8988 8989Fixed support for the "FixedHw" keyword. Previously, the FixedHw 8990address space was set to 0, not 0x7f as it should be. 8991 8992 ------------------------------------------ 8993Summary of changes for this label: 03_13_01 8994 8995 ACPI CA Core Subsystem: 8996 8997During ACPI initialization, the _SB_._INI method is now run if 8998present. 8999 9000Notify handler fix - notifies are deferred until the parent method 9001completes execution. This fixes the "mutex already acquired" 9002issue seen occasionally. 9003 9004Part of the "implicit conversion" rules in ACPI 2.0 have been 9005found to cause compatibility problems with existing ASL/AML. The 9006convert "result-to-target-type" implementation has been removed 9007for stores to method Args and Locals. Source operand conversion 9008is still fully implemented. Possible changes to ACPI 2.0 9009specification pending. 9010 9011Fix to AcpiRsCalculatePciRoutingTableLength to return correct 9012length. 9013 9014Fix for compiler warnings for 64-bit compiles. 9015 9016 Linux: 9017 9018/proc output aligned for easier parsing. 9019 9020Release-version compile problem fixed. 9021 9022New kernel configuration options documented in Configure.help. 9023 9024IBM 600E - Fixed Sleep button may generate "Invalid <NULL> 9025context" message. 9026 9027 OSPM: 9028 9029Power resource driver integrated with bus manager. 9030 9031Fixed kernel fault during active cooling for thermal zones. 9032 9033Source Code: 9034 9035The source code tree has been restructured. 9036 9037 9038 9039------------------------------------------ 9040Summary of changes for this label: 03_02_01 9041 9042 Linux OS Services Layer (OSL): 9043 9044Major revision of all Linux-specific code. 9045 9046Modularized all ACPI-specific drivers. 9047 9048Added new thermal zone and power resource drivers. 9049 9050Revamped /proc interface (new functionality is under /proc/acpi). 9051 9052New kernel configuration options. 9053 9054 Linux known issues: 9055 9056New kernel configuration options not documented in Configure.help 9057yet. 9058 9059 9060Module dependencies not currently implemented. If used, they 9061should be loaded in this order: busmgr, power, ec, system, 9062processor, battery, ac_adapter, button, thermal. 9063 9064Modules will not load if CONFIG_MODVERSION is set. 9065 9066IBM 600E - entering S5 may reboot instead of shutting down. 9067 9068IBM 600E - Sleep button may generate "Invalid <NULL> context" 9069message. 9070 9071Some systems may fail with "execution mutex already acquired" 9072message. 9073 9074 ACPI CA Core Subsystem: 9075 9076Added a new OSL Interface, AcpiOsGetThreadId. This was required 9077for the deadlock detection code. Defined to return a non-zero, 32- 9078bit thread ID for the currently executing thread. May be a non- 9079zero constant integer on single-thread systems. 9080 9081Implemented deadlock detection for internal subsystem mutexes. We 9082may add conditional compilation for this code (debug only) later. 9083 9084ASL/AML Mutex object semantics are now fully supported. This 9085includes multiple acquires/releases by owner and support for the 9086 9087Mutex SyncLevel parameter. 9088 9089A new "Force Release" mechanism automatically frees all ASL 9090Mutexes that have been acquired but not released when a thread 9091exits the interpreter. This forces conformance to the ACPI spec 9092("All mutexes must be released when an invocation exits") and 9093prevents deadlocked ASL threads. This mechanism can be expanded 9094(later) to monitor other resource acquisitions if OEM ASL code 9095continues to misbehave (which it will). 9096 9097Several new ACPI exception codes have been added for the Mutex 9098support. 9099 9100Recursive method calls are now allowed and supported (the ACPI 9101spec does in fact allow recursive method calls.) The number of 9102recursive calls is subject to the restrictions imposed by the 9103SERIALIZED method keyword and SyncLevel (ACPI 2.0) method 9104parameter. 9105 9106Implemented support for the SyncLevel parameter for control 9107methods (ACPI 2.0 feature) 9108 9109Fixed a deadlock problem when multiple threads attempted to use 9110the interpreter. 9111 9112Fixed a problem where the string length of a String package 9113element was not always set in a package returned from 9114AcpiEvaluateObject. 9115 9116Fixed a problem where the length of a String package element was 9117not always included in the length of the overall package returned 9118from AcpiEvaluateObject. 9119 9120Added external interfaces (Acpi*) to the ACPI debug memory 9121manager. This manager keeps a list of all outstanding 9122allocations, and can therefore detect memory leaks and attempts to 9123free memory blocks more than once. Useful for code such as the 9124power manager, etc. May not be appropriate for device drivers. 9125Performance with the debug code enabled is slow. 9126 9127The ACPI Global Lock is now an optional hardware element. 9128 9129 ASL Compiler Version X2015: 9130 9131Integrated changes to allow the compiler to be generated on 9132multiple platforms. 9133 9134Linux makefile added to generate the compiler on Linux 9135 9136 Source Code: 9137 9138All platform-specific headers have been moved to their own 9139subdirectory, Include/Platform. 9140 9141New source file added, Interpreter/ammutex.c 9142 9143New header file, Include/acstruct.h 9144 9145 Documentation: 9146 9147The programmer reference has been updated for the following new 9148interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree 9149 9150 ------------------------------------------ 9151Summary of changes for this label: 02_08_01 9152 9153Core ACPI CA Subsystem: Fixed a problem where an error was 9154incorrectly returned if the return resource buffer was larger than 9155the actual data (in the resource interfaces). 9156 9157References to named objects within packages are resolved to the 9158 9159full pathname string before packages are returned directly (via 9160the AcpiEvaluateObject interface) or indirectly via the resource 9161interfaces. 9162 9163Linux OS Services Layer (OSL): 9164 9165Improved /proc battery interface. 9166 9167 9168Added C-state debugging output and other miscellaneous fixes. 9169 9170ASL Compiler Version X2014: 9171 9172All defined method arguments can now be used as local variables, 9173including the ones that are not actually passed in as parameters. 9174The compiler tracks initialization of the arguments and issues an 9175exception if they are used without prior assignment (just like 9176locals). 9177 9178The -o option now specifies a filename prefix that is used for all 9179output files, including the AML output file. Otherwise, the 9180default behavior is as follows: 1) the AML goes to the file 9181specified in the DSDT. 2) all other output files use the input 9182source filename as the base. 9183 9184 ------------------------------------------ 9185Summary of changes for this label: 01_25_01 9186 9187Core ACPI CA Subsystem: Restructured the implementation of object 9188store support within the interpreter. This includes support for 9189the Store operator as well as any ASL operators that include a 9190target operand. 9191 9192Partially implemented support for Implicit Result-to-Target 9193conversion. This is when a result object is converted on the fly 9194to the type of an existing target object. Completion of this 9195support is pending further analysis of the ACPI specification 9196concerning this matter. 9197 9198CPU-specific code has been removed from the subsystem (hardware 9199directory). 9200 9201New Power Management Timer functions added 9202 9203Linux OS Services Layer (OSL): Moved system state transition code 9204to the core, fixed it, and modified Linux OSL accordingly. 9205 9206Fixed C2 and C3 latency calculations. 9207 9208 9209We no longer use the compilation date for the version message on 9210initialization, but retrieve the version from AcpiGetSystemInfo(). 9211 9212Incorporated for fix Sony VAIO machines. 9213 9214Documentation: The Programmer Reference has been updated and 9215reformatted. 9216 9217 9218ASL Compiler: Version X2013: Fixed a problem where the line 9219numbering and error reporting could get out of sync in the 9220presence of multiple include files. 9221 9222 ------------------------------------------ 9223Summary of changes for this label: 01_15_01 9224 9225Core ACPI CA Subsystem: 9226 9227Implemented support for type conversions in the execution of the 9228ASL Concatenate operator (The second operand is converted to 9229match the type of the first operand before concatenation.) 9230 9231Support for implicit source operand conversion is partially 9232implemented. The ASL source operand types Integer, Buffer, and 9233String are freely interchangeable for most ASL operators and are 9234converted by the interpreter on the fly as required. Implicit 9235Target operand conversion (where the result is converted to the 9236target type before storing) is not yet implemented. 9237 9238Support for 32-bit and 64-bit BCD integers is implemented. 9239 9240Problem fixed where a field read on an aligned field could cause a 9241read past the end of the field. 9242 9243New exception, AE_AML_NO_RETURN_VALUE, is returned when a method 9244does not return a value, but the caller expects one. (The ASL 9245compiler flags this as a warning.) 9246 9247ASL Compiler: 9248 9249Version X2011: 92501. Static typechecking of all operands is implemented. This 9251prevents the use of invalid objects (such as using a Package where 9252an Integer is required) at compile time instead of at interpreter 9253run-time. 92542. The ASL source line is printed with ALL errors and warnings. 92553. Bug fix for source EOF without final linefeed. 92564. Debug option is split into a parse trace and a namespace trace. 92575. Namespace output option (-n) includes initial values for 9258integers and strings. 92596. Parse-only option added for quick syntax checking. 92607. Compiler checks for duplicate ACPI name declarations 9261 9262Version X2012: 92631. Relaxed typechecking to allow interchangeability between 9264strings, integers, and buffers. These types are now converted by 9265the interpreter at runtime. 92662. Compiler reports time taken by each internal subsystem in the 9267debug output file. 9268 9269 9270 ------------------------------------------ 9271Summary of changes for this label: 12_14_00 9272 9273ASL Compiler: 9274 9275This is the first official release of the compiler. Since the 9276compiler requires elements of the Core Subsystem, this label 9277synchronizes everything. 9278 9279------------------------------------------ 9280Summary of changes for this label: 12_08_00 9281 9282 9283Fixed a problem where named references within the ASL definition 9284of both OperationRegions and CreateXXXFields did not work 9285properly. The symptom was an AE_AML_OPERAND_TYPE during 9286initialization of the region/field. This is similar (but not 9287related internally) to the problem that was fixed in the last 9288label. 9289 9290Implemented both 32-bit and 64-bit support for the BCD ASL 9291functions ToBCD and FromBCD. 9292 9293Updated all legal headers to include "2000" in the copyright 9294years. 9295 9296 ------------------------------------------ 9297Summary of changes for this label: 12_01_00 9298 9299Fixed a problem where method invocations within the ASL definition 9300of both OperationRegions and CreateXXXFields did not work 9301properly. The symptom was an AE_AML_OPERAND_TYPE during 9302initialization of the region/field: 9303 9304 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments 9305[DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s) 9306(0x3005) 9307 9308Fixed a problem where operators with more than one nested 9309subexpression would fail. The symptoms were varied, by mostly 9310AE_AML_OPERAND_TYPE errors. This was actually a rather serious 9311problem that has gone unnoticed until now. 9312 9313 Subtract (Add (1,2), Multiply (3,4)) 9314 9315Fixed a problem where AcpiGetHandle didn't quite get fixed in the 9316previous build (The prefix part of a relative path was handled 9317incorrectly). 9318 9319Fixed a problem where Operation Region initialization failed if 9320the operation region name was a "namepath" instead of a simple 9321"nameseg". Symptom was an AE_NO_OPERAND error. 9322 9323Fixed a problem where an assignment to a local variable via the 9324indirect RefOf mechanism only worked for the first such 9325assignment. Subsequent assignments were ignored. 9326 9327 ------------------------------------------ 9328Summary of changes for this label: 11_15_00 9329 9330ACPI 2.0 table support with backwards support for ACPI 1.0 and the 93310.71 extensions. Note: although we can read ACPI 2.0 BIOS tables, 9332the AML interpreter does NOT have support for the new 2.0 ASL 9333grammar terms at this time. 9334 9335All ACPI hardware access is via the GAS structures in the ACPI 2.0 9336FADT. 9337 9338All physical memory addresses across all platforms are now 64 bits 9339wide. Logical address width remains dependent on the platform 9340(i.e., "void *"). 9341 9342AcpiOsMapMemory interface changed to a 64-bit physical address. 9343 9344The AML interpreter integer size is now 64 bits, as per the ACPI 93452.0 specification. 9346 9347For backwards compatibility with ACPI 1.0, ACPI tables with a 9348revision number less than 2 use 32-bit integers only. 9349 9350Fixed a problem where the evaluation of OpRegion operands did not 9351always resolve them to numbers properly. 9352 9353------------------------------------------ 9354Summary of changes for this label: 10_20_00 9355 9356Fix for CBN_._STA issue. This fix will allow correct access to 9357CBN_ OpRegions when the _STA returns 0x8. 9358 9359Support to convert ACPI constants (Ones, Zeros, One) to actual 9360values before a package object is returned 9361 9362Fix for method call as predicate to if/while construct causing 9363incorrect if/while behavior 9364 9365Fix for Else block package lengths sometimes calculated wrong (if 9366block > 63 bytes) 9367 9368Fix for Processor object length field, was always zero 9369 9370Table load abort if FACP sanity check fails 9371 9372Fix for problem with Scope(name) if name already exists 9373 9374Warning emitted if a named object referenced cannot be found 9375(resolved) during method execution. 9376 9377 9378 9379 9380 9381------------------------------------------ 9382Summary of changes for this label: 9_29_00 9383 9384New table initialization interfaces: AcpiInitializeSubsystem no 9385longer has any parameters AcpiFindRootPointer - Find the RSDP (if 9386necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP- 9387>RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by 9388AcpiLoadTables 9389 9390Note: These interface changes require changes to all existing OSDs 9391 9392The PCI_Config default address space handler is always installed 9393at the root namespace object. 9394 9395------------------------------------------- 9396Summary of changes for this label: 09_15_00 9397 9398The new initialization architecture is implemented. New 9399interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize) 9400AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace 9401 9402(Namespace is automatically loaded when a table is loaded) 9403 9404The ACPI_OPERAND_OBJECT has been optimized to shrink its size from 940552 bytes to 32 bytes. There is usually one of these for every 9406namespace object, so the memory savings is significant. 9407 9408Implemented just-in-time evaluation of the CreateField operators. 9409 9410Bug fixes for IA-64 support have been integrated. 9411 9412Additional code review comments have been implemented 9413 9414The so-called "third pass parse" has been replaced by a final walk 9415through the namespace to initialize all operation regions (address 9416spaces) and fields that have not yet been initialized during the 9417execution of the various _INI and REG methods. 9418 9419New file - namespace/nsinit.c 9420 9421------------------------------------------- 9422Summary of changes for this label: 09_01_00 9423 9424Namespace manager data structures have been reworked to change the 9425primary object from a table to a single object. This has 9426resulted in dynamic memory savings of 3X within the namespace and 94272X overall in the ACPI CA subsystem. 9428 9429Fixed problem where the call to AcpiEvFindPciRootBuses was 9430inadvertently left commented out. 9431 9432Reduced the warning count when generating the source with the GCC 9433compiler. 9434 9435Revision numbers added to each module header showing the 9436SourceSafe version of the file. Please refer to this version 9437number when giving us feedback or comments on individual modules. 9438 9439The main object types within the subsystem have been renamed to 9440clarify their purpose: 9441 9442ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT 9443ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT 9444ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE 9445 9446NOTE: no changes to the initialization sequence are included in 9447this label. 9448 9449------------------------------------------- 9450Summary of changes for this label: 08_23_00 9451 9452Fixed problem where TerminateControlMethod was being called 9453multiple times per method 9454 9455Fixed debugger problem where single stepping caused a semaphore to 9456be oversignalled 9457 9458Improved performance through additional parse object caching - 9459added ACPI_EXTENDED_OP type 9460 9461------------------------------------------- 9462Summary of changes for this label: 08_10_00 9463 9464Parser/Interpreter integration: Eliminated the creation of 9465complete parse trees for ACPI tables and control methods. 9466Instead, parse subtrees are created and then deleted as soon as 9467they are processed (Either entered into the namespace or executed 9468by the interpreter). This reduces the use of dynamic kernel 9469memory significantly. (about 10X) 9470 9471Exception codes broken into classes and renumbered. Be sure to 9472recompile all code that includes acexcep.h. Hopefully we won't 9473have to renumber the codes again now that they are split into 9474classes (environment, programmer, AML code, ACPI table, and 9475internal). 9476 9477Fixed some additional alignment issues in the Resource Manager 9478subcomponent 9479 9480Implemented semaphore tracking in the AcpiExec utility, and fixed 9481several places where mutexes/semaphores were being unlocked 9482without a corresponding lock operation. There are no known 9483semaphore or mutex "leaks" at this time. 9484 9485Fixed the case where an ASL Return operator is used to return an 9486unnamed package. 9487 9488------------------------------------------- 9489Summary of changes for this label: 07_28_00 9490 9491Fixed a problem with the way addresses were calculated in 9492AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem 9493manifested itself when a Field was created with WordAccess or 9494DwordAccess, but the field unit defined within the Field was less 9495 9496than a Word or Dword. 9497 9498Fixed a problem in AmlDumpOperands() module's loop to pull 9499operands off of the operand stack to display information. The 9500problem manifested itself as a TLB error on 64-bit systems when 9501accessing an operand stack with two or more operands. 9502 9503Fixed a problem with the PCI configuration space handlers where 9504context was getting confused between accesses. This required a 9505change to the generic address space handler and address space 9506setup definitions. Handlers now get both a global handler context 9507(this is the one passed in by the user when executing 9508AcpiInstallAddressSpaceHandler() and a specific region context 9509that is unique to each region (For example, the _ADR, _SEG and 9510_BBN values associated with a specific region). The generic 9511function definitions have changed to the following: 9512 9513typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function, 9514UINT32 Address, UINT32 BitWidth, UINT32 *Value, void 9515*HandlerContext, // This used to be void *Context void 9516*RegionContext); // This is an additional parameter 9517 9518typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE 9519RegionHandle, UINT32 Function, void *HandlerContext, void 9520**RegionContext); // This used to be **ReturnContext 9521 9522------------------------------------------- 9523Summary of changes for this label: 07_21_00 9524 9525Major file consolidation and rename. All files within the 9526interpreter have been renamed as well as most header files. This 9527was done to prevent collisions with existing files in the host 9528OSs -- filenames such as "config.h" and "global.h" seem to be 9529quite common. The VC project files have been updated. All 9530makefiles will require modification. 9531 9532The parser/interpreter integration continues in Phase 5 with the 9533implementation of a complete 2-pass parse (the AML is parsed 9534twice) for each table; This avoids the construction of a huge 9535parse tree and therefore reduces the amount of dynamic memory 9536required by the subsystem. Greater use of the parse object cache 9537means that performance is unaffected. 9538 9539Many comments from the two code reviews have been rolled in. 9540 9541The 64-bit alignment support is complete. 9542 9543------------------------------------------- 9544Summary of changes for this label: 06_30_00 9545 9546With a nod and a tip of the hat to the technology of yesteryear, 9547we've added support in the source code for 80 column output 9548devices. The code is now mostly constrained to 80 columns or 9549less to support environments and editors that 1) cannot display 9550or print more than 80 characters on a single line, and 2) cannot 9551disable line wrapping. 9552 9553A major restructuring of the namespace data structure has been 9554completed. The result is 1) cleaner and more 9555understandable/maintainable code, and 2) a significant reduction 9556in the dynamic memory requirement for each named ACPI object 9557(almost half). 9558 9559------------------------------------------- 9560Summary of changes for this label: 06_23_00 9561 9562Linux support has been added. In order to obtain approval to get 9563the ACPI CA subsystem into the Linux kernel, we've had to make 9564quite a few changes to the base subsystem that will affect all 9565users (all the changes are generic and OS- independent). The 9566effects of these global changes have been somewhat far reaching. 9567Files have been merged and/or renamed and interfaces have been 9568renamed. The major changes are described below. 9569 9570Osd* interfaces renamed to AcpiOs* to eliminate namespace 9571pollution/confusion within our target kernels. All OSD 9572interfaces must be modified to match the new naming convention. 9573 9574Files merged across the subsystem. A number of the smaller source 9575and header files have been merged to reduce the file count and 9576increase the density of the existing files. There are too many 9577to list here. In general, makefiles that call out individual 9578files will require rebuilding. 9579 9580Interpreter files renamed. All interpreter files now have the 9581prefix am* instead of ie* and is*. 9582 9583Header files renamed: The acapi.h file is now acpixf.h. The 9584acpiosd.h file is now acpiosxf.h. We are removing references to 9585the acronym "API" since it is somewhat windowsy. The new name is 9586"external interface" or xface or xf in the filenames.j 9587 9588 9589All manifest constants have been forced to upper case (some were 9590mixed case.) Also, the string "ACPI_" has been prepended to many 9591(not all) of the constants, typedefs, and structs. 9592 9593The globals "DebugLevel" and "DebugLayer" have been renamed 9594"AcpiDbgLevel" and "AcpiDbgLayer" respectively. 9595 9596All other globals within the subsystem are now prefixed with 9597"AcpiGbl_" Internal procedures within the subsystem are now 9598prefixed with "Acpi" (with only a few exceptions). The original 9599two-letter abbreviation for the subcomponent remains after "Acpi" 9600- for example, CmCallocate became AcpiCmCallocate. 9601 9602Added a source code translation/conversion utility. Used to 9603generate the Linux source code, it can be modified to generate 9604other types of source as well. Can also be used to cleanup 9605existing source by removing extraneous spaces and blank lines. 9606Found in tools/acpisrc/* 9607 9608OsdUnMapMemory was renamed to OsdUnmapMemory and then 9609AcpiOsUnmapMemory. (UnMap became Unmap). 9610 9611A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore. 9612When set to one, this indicates that the caller wants to use the 9613 9614semaphore as a mutex, not a counting semaphore. ACPI CA uses 9615both types. However, implementers of this call may want to use 9616different OS primitives depending on the type of semaphore 9617requested. For example, some operating systems provide separate 9618 9619"mutex" and "semaphore" interfaces - where the mutex interface is 9620much faster because it doesn't have all the overhead of a full 9621semaphore implementation. 9622 9623Fixed a deadlock problem where a method that accesses the PCI 9624address space can block forever if it is the first access to the 9625space. 9626 9627------------------------------------------- 9628Summary of changes for this label: 06_02_00 9629 9630Support for environments that cannot handle unaligned data 9631accesses (e.g. firmware and OS environments devoid of alignment 9632handler technology namely SAL/EFI and the IA-64 Linux kernel) has 9633been added (via configurable macros) in these three areas: - 9634Transfer of data from the raw AML byte stream is done via byte 9635moves instead of word/dword/qword moves. - External objects are 9636aligned within the user buffer, including package elements (sub- 9637objects). - Conversion of name strings to UINT32 Acpi Names is now 9638done byte-wise. 9639 9640The Store operator was modified to mimic Microsoft's 9641implementation when storing to a Buffer Field. 9642 9643Added a check of the BM_STS bit before entering C3. 9644 9645The methods subdirectory has been obsoleted and removed. A new 9646file, cmeval.c subsumes the functionality. 9647 9648A 16-bit (DOS) version of AcpiExec has been developed. The 9649makefile is under the acpiexec directory. 9650