changes.txt revision 206117
1---------------------------------------- 231 March 2010. Summary of changes for version 20100331: 3 41) ACPI CA Core Subsystem: 5 6Completed a major update for the GPE support in order to improve support for 7shared GPEs and to simplify both host OS and ACPICA code. Added a reference 8count mechanism to support shared GPEs that require multiple device drivers. 9Several external interfaces have changed. One external interface has been 10removed. One new external interface was added. Most of the GPE external 11interfaces now use the GPE spinlock instead of the events mutex (and the 12Flags parameter for many GPE interfaces has been removed.) See the updated 13ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore, Rafael 14Wysocki. ACPICA BZ 831. 15 16Changed: 17 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus 18Removed: 19 AcpiSetGpeType 20New: 21 AcpiSetGpe 22 23Implemented write support for DataTable operation regions. These regions are 24defined via the DataTableRegion() operator. Previously, only read support was 25implemented. The ACPI specification allows DataTableRegions to be read/write, 26however. 27 28Implemented a new subsystem option to force a copy of the DSDT to local 29memory. Optionally copy the entire DSDT to local memory (instead of simply 30mapping it.) There are some (albeit very rare) BIOSs that corrupt or replace 31the original DSDT, creating the need for this option. Default is FALSE, do 32not copy the DSDT. 33 34Implemented detection of a corrupted or replaced DSDT. This change adds 35support to detect a DSDT that has been corrupted and/or replaced from outside 36the OS (by firmware). This is typically catastrophic for the system, but has 37been seen on some machines. Once this problem has been detected, the DSDT 38copy option can be enabled via system configuration. Lin Ming, Bob Moore. 39 40Fixed two problems with AcpiReallocateRootTable during the root table copy. 41When copying the root table to the new allocation, the length used was 42incorrect. The new size was used instead of the current table size, meaning 43too much data was copied. Also, the count of available slots for ACPI tables 44was not set correctly. Alexey Starikovskiy, Bob Moore. 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: 87.5K Code, 18.4K Data, 105.9K Total 53 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 54 Current Release: 55 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total 56 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total 57 582) iASL Compiler/Disassembler and Tools: 59 60iASL: Implement limited typechecking for values returned from predefined 61control methods. The type of any returned static (unnamed) object is now 62validated. For example, Return(1). ACPICA BZ 786. 63 64iASL: Fixed a predefined name object verification regression. Fixes a problem 65introduced in version 20100304. An error is incorrectly generated if a 66predefined name is declared as a static named object with a value defined 67using the keywords "Zero", "One", or "Ones". Lin Ming. 68 69iASL: Added Windows 7 support for the -g option (get local ACPI tables) by 70reducing the requested registry access rights. ACPICA BZ 842. 71 72Disassembler: fixed a possible fault when generating External() statements. 73Introduced in commit ae7d6fd: Properly handle externals with parent-prefix 74(carat). Fixes a string length allocation calculation. Lin Ming. 75 76---------------------------------------- 7704 March 2010. Summary of changes for version 20100304: 78 791) ACPI CA Core Subsystem: 80 81Fixed a possible problem with the AML Mutex handling function 82AcpiExReleaseMutex where the function could fault under the very rare 83condition when the interpreter has blocked, the interpreter lock is released, 84the interpreter is then reentered via the same thread, and attempts to 85acquire an AML mutex that was previously acquired. FreeBSD report 140979. Lin 86Ming. 87 88Implemented additional configuration support for the AML "Debug Object". 89Output from the debug object can now be enabled via a global variable, 90AcpiGbl_EnableAmlDebugObject. This will assist with remote machine debugging. 91This debug output is now available in the release version of ACPICA instead 92of just the debug version. Also, the entire debug output module can now be 93configured out of the ACPICA build if desired. One new file added, 94executer/exdebug.c. Lin Ming, Bob Moore. 95 96Added header support for the ACPI MCHI table (Management Controller Host 97Interface Table). This table was added in ACPI 4.0, but the defining document 98has only recently become available. 99 100Standardized output of integer values for ACPICA warnings/errors. Always use 1010x prefix for hex output, always use %u for unsigned integer decimal output. 102Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about 400 103invocations.) These invocations were converted from the original 104ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835. 105 106Example Code and Data Size: These are the sizes for the OS-independent 107acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 108debug version of the code includes the debug output trace mechanism and has a 109much larger code and data size. 110 111 Previous Release: 112 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 113 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 114 Current Release: 115 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total 116 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total 117 1182) iASL Compiler/Disassembler and Tools: 119 120iASL: Implemented typechecking support for static (non-control method) 121predefined named objects that are declared with the Name() operator. For 122example, the type of this object is now validated to be of type Integer: 123Name(_BBN, 1). This change migrates the compiler to using the core predefined 124name table instead of maintaining a local version. Added a new file, 125aslpredef.c. ACPICA BZ 832. 126 127Disassembler: Added support for the ACPI 4.0 MCHI table. 128 129---------------------------------------- 13021 January 2010. Summary of changes for version 20100121: 131 1321) ACPI CA Core Subsystem: 133 134Added the 2010 copyright to all module headers and signons. This affects 135virtually every file in the ACPICA core subsystem, the iASL compiler, the 136tools/utilities, and the test suites. 137 138Implemented a change to the AcpiGetDevices interface to eliminate unnecessary 139invocations of the _STA method. In the case where a specific _HID is 140requested, do not run _STA until a _HID match is found. This eliminates 141potentially dozens of _STA calls during a search for a particular device/HID, 142which in turn can improve boot times. ACPICA BZ 828. Lin Ming. 143 144Implemented an additional repair for predefined method return values. Attempt 145to repair unexpected NULL elements within returned Package objects. Create an 146Integer of value zero, a NULL String, or a zero-length Buffer as appropriate. 147ACPICA BZ 818. Lin Ming, Bob Moore. 148 149Removed the obsolete ACPI_INTEGER data type. This type was introduced as the 150code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0 (with 15164-bit AML integers). It is now obsolete and this change removes it from the 152ACPICA code base, replaced by UINT64. The original typedef has been retained 153for now for compatibility with existing device driver code. ACPICA BZ 824. 154 155Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field in 156the parse tree object. 157 158Added additional warning options for the gcc-4 generation. Updated the source 159accordingly. This includes some code restructuring to eliminate unreachable 160code, elimination of some gotos, elimination of unused return values, some 161additional casting, and removal of redundant declarations. 162 163Example Code and Data Size: These are the sizes for the OS-independent 164acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 165debug version of the code includes the debug output trace mechanism and has a 166much larger code and data size. 167 168 Previous Release: 169 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 170 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 171 Current Release: 172 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total 173 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total 174 1752) iASL Compiler/Disassembler and Tools: 176 177No functional changes for this release. 178 179---------------------------------------- 18014 December 2009. Summary of changes for version 20091214: 181 1821) ACPI CA Core Subsystem: 183 184Enhanced automatic data type conversions for predefined name repairs. This 185change expands the automatic repairs/conversions for predefined name return 186values to make Integers, Strings, and Buffers fully interchangeable. Also, a 187Buffer can be converted to a Package of Integers if necessary. The nsrepair.c 188module was completely restructured. Lin Ming, Bob Moore. 189 190Implemented automatic removal of null package elements during predefined name 191repairs. This change will automatically remove embedded and trailing NULL 192package elements from returned package objects that are defined to contain a 193variable number of sub-packages. The driver is then presented with a package 194with no null elements to deal with. ACPICA BZ 819. 195 196Implemented a repair for the predefined _FDE and _GTM names. The expected 197return value for both names is a Buffer of 5 DWORDs. This repair fixes two 198possible problems (both seen in the field), where a package of integers is 199returned, or a buffer of BYTEs is returned. With assistance from Jung-uk Kim. 200 201Implemented additional module-level code support. This change will properly 202execute module-level code that is not at the root of the namespace (under a 203Device object, etc.). Now executes the code within the current scope instead 204of the root. ACPICA BZ 762. Lin Ming. 205 206Fixed possible mutex acquisition errors when running _REG methods. Fixes a 207problem where mutex errors can occur when running a _REG method that is in 208the same scope as a method-defined operation region or an operation region 209under a module-level IF block. This type of code is rare, so the problem has 210not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore. 211 212Fixed a possible memory leak during module-level code execution. An object 213could be leaked for each block of executed module-level code if the 214interpreter slack mode is enabled This change deletes any implicitly returned 215object from the module-level code block. Lin Ming. 216 217Removed messages for successful predefined repair(s). The repair mechanism 218was considered too wordy. Now, messages are only unconditionally emitted if 219the return object cannot be repaired. Existing messages for successful 220repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ 827. 221 222Example Code and Data Size: These are the sizes for the OS-independent 223acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 224debug version of the code includes the debug output trace mechanism and has a 225much larger code and data size. 226 227 Previous Release: 228 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 229 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 230 Current Release: 231 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total 232 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total 233 2342) iASL Compiler/Disassembler and Tools: 235 236iASL: Fixed a regression introduced in 20091112 where intermediate .SRC files 237were no longer automatically removed at the termination of the compile. 238 239acpiexec: Implemented the -f option to specify default region fill value. 240This option specifies the value used to initialize buffers that simulate 241operation regions. Default value is zero. Useful for debugging problems that 242depend on a specific initial value for a region or field. 243 244---------------------------------------- 24512 November 2009. Summary of changes for version 20091112: 246 2471) ACPI CA Core Subsystem: 248 249Implemented a post-order callback to AcpiWalkNamespace. The existing 250interface only has a pre-order callback. This change adds an additional 251parameter for a post-order callback which will be more useful for bus scans. 252ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference. 253 254Modified the behavior of the operation region memory mapping cache for 255SystemMemory. Ensure that the memory mappings created for operation regions 256do not cross 4K page boundaries. Crossing a page boundary while mapping 257regions can cause kernel warnings on some hosts if the pages have different 258attributes. Such regions are probably BIOS bugs, and this is the workaround. 259Linux BZ 14445. Lin Ming. 260 261Implemented an automatic repair for predefined methods that must return 262sorted lists. This change will repair (by sorting) packages returned by _ALR, 263_PSS, and _TSS. Drivers can now assume that the packages are correctly sorted 264and do not contain NULL package elements. Adds one new file, 265namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore. 266 267Fixed a possible fault during predefined name validation if a return Package 268object contains NULL elements. Also adds a warning if a NULL element is 269followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement may 270include repair or removal of all such NULL elements where possible. 271 272Implemented additional module-level executable AML code support. This change 273will execute module-level code that is not at the root of the namespace 274(under a Device object, etc.) at table load time. Module-level executable AML 275code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming. 276 277Implemented a new internal function to create Integer objects. This function 278simplifies miscellaneous object creation code. ACPICA BZ 823. 279 280Reduced the severity of predefined repair messages, Warning to Info. Since 281the object was successfully repaired, a warning is too severe. Reduced to an 282info message for now. These messages may eventually be changed to debug-only. 283ACPICA BZ 812. 284 285Example Code and Data Size: These are the sizes for the OS-independent 286acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 287debug version of the code includes the debug output trace mechanism and has a 288much larger code and data size. 289 290 Previous Release: 291 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 292 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 293 Current Release: 294 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total 295 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total 296 2972) iASL Compiler/Disassembler and Tools: 298 299iASL: Implemented Switch() with While(1) so that Break works correctly. This 300change correctly implements the Switch operator with a surrounding While(1) 301so that the Break operator works as expected. ACPICA BZ 461. Lin Ming. 302 303iASL: Added a message if a package initializer list is shorter than package 304length. Adds a new remark for a Package() declaration if an initializer list 305exists, but is shorter than the declared length of the package. Although 306technically legal, this is probably a coding error and it is seen in the 307field. ACPICA BZ 815. Lin Ming, Bob Moore. 308 309iASL: Fixed a problem where the compiler could fault after the maximum number 310of errors was reached (200). 311 312acpixtract: Fixed a possible warning for pointer cast if the compiler warning 313level set very high. 314 315---------------------------------------- 31613 October 2009. Summary of changes for version 20091013: 317 3181) ACPI CA Core Subsystem: 319 320Fixed a problem where an Operation Region _REG method could be executed more 321than once. If a custom address space handler is installed by the host before 322the "initialize operation regions" phase of the ACPICA initialization, any 323_REG methods for that address space could be executed twice. This change 324fixes the problem. ACPICA BZ 427. Lin Ming. 325 326Fixed a possible memory leak for the Scope() ASL operator. When the exact 327invocation of "Scope(\)" is executed (change scope to root), one internal 328operand object was leaked. Lin Ming. 329 330Implemented a run-time repair for the _MAT predefined method. If the _MAT 331return value is defined as a Field object in the AML, and the field 332size is less than or equal to the default width of an integer (32 or 64),_MAT 333can incorrectly return an Integer instead of a Buffer. ACPICA now 334automatically repairs this problem. ACPICA BZ 810. 335 336Implemented a run-time repair for the _BIF and _BIX predefined methods. The 337"OEM Information" field is often incorrectly returned as an Integer with 338value zero if the field is not supported by the platform. This is due to an 339ambiguity in the ACPI specification. The field should always be a string. 340ACPICA now automatically repairs this problem by returning a NULL string 341within the returned Package. ACPICA BZ 807. 342 343Example Code and Data Size: These are the sizes for the OS-independent 344acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 345debug version of the code includes the debug output trace mechanism and has a 346much larger code and data size. 347 348 Previous Release: 349 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 350 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 351 Current Release: 352 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total 353 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total 354 3552) iASL Compiler/Disassembler and Tools: 356 357Disassembler: Fixed a problem where references to external symbols that 358contained one or more parent-prefixes (carats) were not handled correctly, 359possibly causing a fault. ACPICA BZ 806. Lin Ming. 360 361Disassembler: Restructured the code so that all functions that handle 362external symbols are in a single module. One new file is added, 363common/dmextern.c. 364 365AML Debugger: Added a max count argument for the Batch command (which 366executes multiple predefined methods within the namespace.) 367 368iASL: Updated the compiler documentation (User Reference.) Available at 369http://www.acpica.org/documentation/. ACPICA BZ 750. 370 371AcpiXtract: Updated for Lint and other formatting changes. Close all open 372files. 373 374---------------------------------------- 37503 September 2009. Summary of changes for version 20090903: 376 3771) ACPI CA Core Subsystem: 378 379For Windows Vista compatibility, added the automatic execution of an _INI 380method located at the namespace root (\_INI). This method is executed at 381table load time. This support is in addition to the automatic execution of 382\_SB._INI. Lin Ming. 383 384Fixed a possible memory leak in the interpreter for AML package objects if 385the package initializer list is longer than the defined size of the package. 386This apparently can only happen if the BIOS changes the package size on the 387fly (seen in a _PSS object), as ASL compilers do not allow this. The 388interpreter will truncate the package to the defined size (and issue an error 389message), but previously could leave the extra objects undeleted if they were 390pre-created during the argument processing (such is the case if the package 391consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805. 392 393Fixed a problem seen when a Buffer or String is stored to itself via ASL. 394This has been reported in the field. Previously, ACPICA would zero out the 395buffer/string. Now, the operation is treated as a noop. Provides Windows 396compatibility. ACPICA BZ 803. Lin Ming. 397 398Removed an extraneous error message for ASL constructs of the form 399Store(LocalX,LocalX) when LocalX is uninitialized. These curious statements 400are seen in many BIOSs and are once again treated as NOOPs and no error is 401emitted when they are encountered. ACPICA BZ 785. 402 403Fixed an extraneous warning message if a _DSM reserved method returns a 404Package object. _DSM can return any type of object, so validation on the 405return type cannot be performed. ACPICA BZ 802. 406 407Example Code and Data Size: These are the sizes for the OS-independent 408acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 409debug version of the code includes the debug output trace mechanism and has a 410much larger code and data size. 411 412 Previous Release: 413 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 414 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 415 Current Release: 416 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total 417 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total 418 4192) iASL Compiler/Disassembler and Tools: 420 421iASL: Fixed a problem with the use of the Alias operator and Resource 422Templates. The correct alias is now constructed and no error is emitted. 423ACPICA BZ 738. 424 425iASL: Implemented the -I option to specify additional search directories for 426include files. Allows multiple additional search paths for include files. 427Directories are searched in the order specified on the command line (after 428the local directory is searched.) ACPICA BZ 800. 429 430iASL: Fixed a problem where the full pathname for include files was not 431emitted for warnings/errors. This caused the IDE support to not work 432properly. ACPICA BZ 765. 433 434iASL: Implemented the -@ option to specify a Windows-style response file 435containing additional command line options. ACPICA BZ 801. 436 437AcpiExec: Added support to load multiple AML files simultaneously (such as a 438DSDT and multiple SSDTs). Also added support for wildcards within the AML 439pathname. These features allow all machine tables to be easily loaded and 440debugged together. ACPICA BZ 804. 441 442Disassembler: Added missing support for disassembly of HEST table Error Bank 443subtables. 444 445---------------------------------------- 44630 July 2009. Summary of changes for version 20090730: 447 448The ACPI 4.0 implementation for ACPICA is complete with this release. 449 4501) ACPI CA Core Subsystem: 451 452ACPI 4.0: Added header file support for all new and changed ACPI tables. 453Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are new 454for ACPI 4.0, but have previously been supported in ACPICA are: CPEP, BERT, 455EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT. There 456have been some ACPI 4.0 changes to other existing tables. Split the large 457actbl1.h header into the existing actbl2.h header. ACPICA BZ 774. 458 459ACPI 4.0: Implemented predefined name validation for all new names. There are 46031 new names in ACPI 4.0. The predefined validation module was split into two 461files. The new file is namespace/nsrepair.c. ACPICA BZ 770. 462 463Implemented support for so-called "module-level executable code". This is 464executable AML code that exists outside of any control method and is intended 465to be executed at table load time. Although illegal since ACPI 2.0, this type 466of code still exists and is apparently still being created. Blocks of this 467code are now detected and executed as intended. Currently, the code blocks 468must exist under either an If, Else, or While construct; these are the 469typical cases seen in the field. ACPICA BZ 762. Lin Ming. 470 471Implemented an automatic dynamic repair for predefined names that return 472nested Package objects. This applies to predefined names that are defined to 473return a variable-length Package of sub-packages. If the number of sub- 474packages is one, BIOS code is occasionally seen that creates a simple single 475package with no sub-packages. This code attempts to fix the problem by 476wrapping a new package object around the existing package. These methods can 477be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA BZ 478790. 479 480Fixed a regression introduced in 20090625 for the AcpiGetDevices interface. 481The _HID/_CID matching was broken and no longer matched IDs correctly. ACPICA 482BZ 793. 483 484Fixed a problem with AcpiReset where the reset would silently fail if the 485register was one of the protected I/O ports. AcpiReset now bypasses the port 486validation mechanism. This may eventually be driven into the AcpiRead/Write 487interfaces. 488 489Fixed a regression related to the recent update of the AcpiRead/Write 490interfaces. A sleep/suspend could fail if the optional PM2 Control register 491does not exist during an attempt to write the Bus Master Arbitration bit. 492(However, some hosts already delete the code that writes this bit, and the 493code may in fact be obsolete at this date.) ACPICA BZ 799. 494 495Fixed a problem where AcpiTerminate could fault if inadvertently called twice 496in succession. ACPICA BZ 795. 497 498Example Code and Data Size: These are the sizes for the OS-independent 499acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 500debug version of the code includes the debug output trace mechanism and has a 501much larger code and data size. 502 503 Previous Release: 504 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 505 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 506 Current Release: 507 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total 508 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total 509 5102) iASL Compiler/Disassembler and Tools: 511 512ACPI 4.0: Implemented disassembler support for all new ACPI tables and 513changes to existing tables. ACPICA BZ 775. 514 515---------------------------------------- 51625 June 2009. Summary of changes for version 20090625: 517 518The ACPI 4.0 Specification was released on June 16 and is available at 519www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will 520continue for the next few releases. 521 5221) ACPI CA Core Subsystem: 523 524ACPI 4.0: Implemented interpreter support for the IPMI operation region 525address space. Includes support for bi-directional data buffers and an IPMI 526address space handler (to be installed by an IPMI device driver.) ACPICA BZ 527773. Lin Ming. 528 529ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. Includes 530support in both the header files and the disassembler. 531 532Completed a major update for the AcpiGetObjectInfo external interface. 533Changes include: 534 - Support for variable, unlimited length HID, UID, and CID strings. 535 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, etc.) 536 - Call the _SxW power methods on behalf of a device object. 537 - Determine if a device is a PCI root bridge. 538 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO. 539These changes will require an update to all callers of this interface. See 540the updated ACPICA Programmer Reference for details. One new source file has 541been added - utilities/utids.c. ACPICA BZ 368, 780. 542 543Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit 544transfers. The Value parameter has been extended from 32 bits to 64 bits in 545order to support new ACPI 4.0 tables. These changes will require an update to 546all callers of these interfaces. See the ACPICA Programmer Reference for 547details. ACPICA BZ 768. 548 549Fixed several problems with AcpiAttachData. The handler was not invoked when 550the host node was deleted. The data sub-object was not automatically deleted 551when the host node was deleted. The interface to the handler had an unused 552parameter, this was removed. ACPICA BZ 778. 553 554Enhanced the function that dumps ACPI table headers. All non-printable 555characters in the string fields are now replaced with '?' (Signature, OemId, 556OemTableId, and CompilerId.) ACPI tables with non-printable characters in 557these fields are occasionally seen in the field. ACPICA BZ 788. 558 559Fixed a problem with predefined method repair code where the code that 560attempts to repair/convert an object of incorrect type is only executed on 561the first time the predefined method is called. The mechanism that disables 562warnings on subsequent calls was interfering with the repair mechanism. 563ACPICA BZ 781. 564 565Fixed a possible memory leak in the predefined validation/repair code when a 566buffer is automatically converted to an expected string object. 567 568Removed obsolete 16-bit files from the distribution and from the current git 569tree head. ACPICA BZ 776. 570 571Example Code and Data Size: These are the sizes for the OS-independent 572acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 573debug version of the code includes the debug output trace mechanism and has a 574much larger code and data size. 575 576 Previous Release: 577 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 578 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 579 Current Release: 580 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total 581 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total 582 5832) iASL Compiler/Disassembler and Tools: 584 585ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI 586operation region keyword. ACPICA BZ 771, 772. Lin Ming. 587 588ACPI 4.0: iASL - implemented compile-time validation support for all new 589predefined names and control methods (31 total). ACPICA BZ 769. 590 591---------------------------------------- 59221 May 2009. Summary of changes for version 20090521: 593 5941) ACPI CA Core Subsystem: 595 596Disabled the preservation of the SCI enable bit in the PM1 control register. 597The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification to be 598a "preserved" bit - "OSPM always preserves this bit position", section 5994.7.3.2.1. However, some machines fail if this bit is in fact preserved 600because the bit needs to be explicitly set by the OS as a workaround. No 601machines fail if the bit is not preserved. Therefore, ACPICA no longer 602attempts to preserve this bit. 603 604Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or 605incorrectly formed _PRT package could cause a fault. Added validation to 606ensure that each package element is actually a sub-package. 607 608Implemented a new interface to install or override a single control method, 609AcpiInstallMethod. This interface is useful when debugging in order to repair 610an existing method or to install a missing method without having to override 611the entire ACPI table. See the ACPICA Programmer Reference for use and 612examples. Lin Ming, Bob Moore. 613 614Fixed several reference count issues with the DdbHandle object that is 615created from a Load or LoadTable operator. Prevent premature deletion of the 616object. Also, mark the object as invalid once the table has been unloaded. 617This is needed because the handle itself may not be deleted after the table 618unload, depending on whether it has been stored in a named object by the 619caller. Lin Ming. 620 621Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple 622mutexes of the same sync level are acquired but then not released in strict 623opposite order, the internally maintained Current Sync Level becomes confused 624and can cause subsequent execution errors. ACPICA BZ 471. 625 626Changed the allowable release order for ASL mutex objects. The ACPI 4.0 627specification has been changed to make the SyncLevel for mutex objects more 628useful. When releasing a mutex, the SyncLevel of the mutex must now be the 629same as the current sync level. This makes more sense than the previous rule 630(SyncLevel less than or equal). This change updates the code to match the 631specification. 632 633Fixed a problem with the local version of the AcpiOsPurgeCache function. The 634(local) cache must be locked during all cache object deletions. Andrew 635Baumann. 636 637Updated the Load operator to use operation region interfaces. This replaces 638direct memory mapping with region access calls. Now, all region accesses go 639through the installed region handler as they should. 640 641Simplified and optimized the NsGetNextNode function. Reduced parameter count 642and reduced code for this frequently used function. 643 644Example Code and Data Size: These are the sizes for the OS-independent 645acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 646debug version of the code includes the debug output trace mechanism and has a 647much larger code and data size. 648 649 Previous Release: 650 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 651 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 652 Current Release: 653 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total 654 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total 655 6562) iASL Compiler/Disassembler and Tools: 657 658Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some problems 659with sub-table disassembly and handling invalid sub-tables. Attempt recovery 660after an invalid sub-table ID. 661 662---------------------------------------- 66322 April 2009. Summary of changes for version 20090422: 664 6651) ACPI CA Core Subsystem: 666 667Fixed a compatibility issue with the recently released I/O port protection 668mechanism. For windows compatibility, 1) On a port protection violation, 669simply ignore the request and do not return an exception (allow the control 670method to continue execution.) 2) If only part of the request overlaps a 671protected port, read/write the individual ports that are not protected. Linux 672BZ 13036. Lin Ming 673 674Enhanced the execution of the ASL/AML BreakPoint operator so that it actually 675breaks into the AML debugger if the debugger is present. This matches the 676ACPI-defined behavior. 677 678Fixed several possible warnings related to the use of the configurable 679ACPI_THREAD_ID. This type can now be configured as either an integer or a 680pointer with no warnings. Also fixes several warnings in printf-like 681statements for the 64-bit build when the type is configured as a pointer. 682ACPICA BZ 766, 767. 683 684Fixed a number of possible warnings when compiling with gcc 4+ (depending on 685warning options.) Examples include printf formats, aliasing, unused globals, 686missing prototypes, missing switch default statements, use of non-ANSI 687library functions, use of non-ANSI constructs. See generate/unix/Makefile for 688a list of warning options used with gcc 3 and 4. ACPICA BZ 735. 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: 82.6K Code, 17.6K Data, 100.2K Total 697 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 698 Current Release: 699 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total 700 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total 701 7022) iASL Compiler/Disassembler and Tools: 703 704iASL: Fixed a generation warning from Bison 2.3 and fixed several warnings on 705the 64-bit build. 706 707iASL: Fixed a problem where the Unix/Linux versions of the compiler could not 708correctly digest Windows/DOS formatted files (with CR/LF). 709 710iASL: Added a new option for "quiet mode" (-va) that produces only the 711compilation summary, not individual errors and warnings. Useful for large 712batch compilations. 713 714AcpiExec: Implemented a new option (-z) to enable a forced semaphore/mutex 715timeout that can be used to detect hang conditions during execution of AML 716code (includes both internal semaphores and AML-defined mutexes and events.) 717 718Added new makefiles for the generation of acpica in a generic unix-like 719environment. These makefiles are intended to generate the acpica tools and 720utilities from the original acpica git source tree structure. 721 722Test Suites: Updated and cleaned up the documentation files. Updated the 723copyrights to 2009, affecting all source files. Use the new version of iASL 724with quiet mode. Increased the number of available semaphores in the Windows 725OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, added 726an alternate implementation of the semaphore timeout to allow aslts to 727execute fully on Cygwin. 728 729---------------------------------------- 73020 March 2009. Summary of changes for version 20090320: 731 7321) ACPI CA Core Subsystem: 733 734Fixed a possible race condition between AcpiWalkNamespace and dynamic table 735unloads. Added a reader/writer locking mechanism to allow multiple concurrent 736namespace walks (readers), but block a dynamic table unload until it can gain 737exclusive write access to the namespace. This fixes a problem where a table 738unload could (possibly catastrophically) delete the portion of the namespace 739that is currently being examined by a walk. Adds a new file, utlock.c, that 740implements the reader/writer lock mechanism. ACPICA BZ 749. 741 742Fixed a regression introduced in version 20090220 where a change to the FADT 743handling could cause the ACPICA subsystem to access non-existent I/O ports. 744 745Modified the handling of FADT register and table (FACS/DSDT) addresses. The 746FADT can contain both 32-bit and 64-bit versions of these addresses. 747Previously, the 64-bit versions were favored, meaning that if both 32 and 64 748versions were valid, but not equal, the 64-bit version was used. This was 749found to cause some machines to fail. Now, in this case, the 32-bit version 750is used instead. This now matches the Windows behavior. 751 752Implemented a new mechanism to protect certain I/O ports. Provides Microsoft 753compatibility and protects the standard PC I/O ports from access via AML 754code. Adds a new file, hwvalid.c 755 756Fixed a possible extraneous warning message from the FADT support. The 757message warns of a 32/64 length mismatch between the legacy and GAS 758definitions for a register. 759 760Removed the obsolete AcpiOsValidateAddress OSL interface. This interface is 761made obsolete by the port protection mechanism above. It was previously used 762to validate the entire address range of an operation region, which could be 763incorrect if the range included illegal ports, but fields within the 764operation region did not actually access those ports. Validation is now 765performed on a per-field basis instead of the entire region. 766 767Modified the handling of the PM1 Status Register ignored bit (bit 11.) 768Ignored bits must be "preserved" according to the ACPI spec. Usually, this 769means a read/modify/write when writing to the register. However, for status 770registers, writing a one means clear the event. Writing a zero means preserve 771the event (do not clear.) This behavior is clarified in the ACPI 4.0 spec, 772and the ACPICA code now simply always writes a zero to the ignored bit. 773 774Modified the handling of ignored bits for the PM1 A/B Control Registers. As 775per the ACPI specification, for the control registers, preserve 776(read/modify/write) all bits that are defined as either reserved or ignored. 777 778Updated the handling of write-only bits in the PM1 A/B Control Registers. 779When reading the register, zero the write-only bits as per the ACPI spec. 780ACPICA BZ 443. Lin Ming. 781 782Removed "Linux" from the list of supported _OSI strings. Linux no longer 783wants to reply true to this request. The Windows strings are the only paths 784through the AML that are tested and known to work properly. 785 786 Previous Release: 787 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 788 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 789 Current Release: 790 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total 791 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total 792 7932) iASL Compiler/Disassembler and Tools: 794 795Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c and 796aetables.c 797 798---------------------------------------- 79920 February 2009. Summary of changes for version 20090220: 800 8011) ACPI CA Core Subsystem: 802 803Optimized the ACPI register locking. Removed locking for reads from the ACPI 804bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock is 805not required when reading the single-bit registers. The 806AcpiGetRegisterUnlocked function is no longer needed and has been removed. 807This will improve performance for reads on these registers. ACPICA BZ 760. 808 809Fixed the parameter validation for AcpiRead/Write. Now return 810AE_BAD_PARAMETER if the input register pointer is null, and AE_BAD_ADDRESS if 811the register has an address of zero. Previously, these cases simply returned 812AE_OK. For optional registers such as PM1B status/enable/control, the caller 813should check for a valid register address before calling. ACPICA BZ 748. 814 815Renamed the external ACPI bit register access functions. Renamed 816AcpiGetRegister and AcpiSetRegister to clarify the purpose of these 817functions. The new names are AcpiReadBitRegister and AcpiWriteBitRegister. 818Also, restructured the code for these functions by simplifying the code path 819and condensing duplicate code to reduce code size. 820 821Added new functions to transparently handle the possibly split PM1 A/B 822registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two functions 823now handle the split registers for PM1 Status, Enable, and Control. ACPICA BZ 824746. 825 826Added a function to handle the PM1 control registers, AcpiHwWritePm1Control. 827This function writes both of the PM1 control registers (A/B). These registers 828are different than the PM1 A/B status and enable registers in that different 829values can be written to the A/B registers. Most notably, the SLP_TYP bits 830can be different, as per the values returned from the _Sx predefined methods. 831 832Removed an extra register write within AcpiHwClearAcpiStatus. This function 833was writing an optional PM1B status register twice. The existing call to the 834low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 A/B 835register. ACPICA BZ 751. 836 837Split out the PM1 Status registers from the FADT. Added new globals for these 838registers (A/B), similar to the way the PM1 Enable registers are handled. 839Instead of overloading the FADT Event Register blocks. This makes the code 840clearer and less prone to error. 841 842Fixed the warning message for when the platform contains too many ACPI tables 843for the default size of the global root table data structure. The calculation 844for the truncation value was incorrect. 845 846Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this 847obsolete macro, since it is now a simple reference to ->common.type. There 848were about 150 invocations of the macro across 41 files. ACPICA BZ 755. 849 850Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as 851TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to 852simply SLEEP_TYPE. ACPICA BZ 754. 853 854Conditionally compile the AcpiSetFirmwareWakingVector64 function. This 855function is only needed on 64-bit host operating systems and is thus not 856included for 32-bit hosts. 857 858Debug output: print the input and result for invocations of the _OSI reserved 859control method via the ACPI_LV_INFO debug level. Also, reduced some of the 860verbosity of this debug level. Len Brown. 861 862Example Code and Data Size: These are the sizes for the OS-independent 863acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 864debug version of the code includes the debug output trace mechanism and has a 865much larger code and data size. 866 867 Previous Release: 868 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 869 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 870 Current Release: 871 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total 872 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total 873 8742) iASL Compiler/Disassembler and Tools: 875 876Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the 877various legal performance profiles. 878 879---------------------------------------- 88023 January 2009. Summary of changes for version 20090123: 881 8821) ACPI CA Core Subsystem: 883 884Added the 2009 copyright to all module headers and signons. This affects 885virtually every file in the ACPICA core subsystem, the iASL compiler, and 886the tools/utilities. 887 888Implemented a change to allow the host to override any ACPI table, including 889dynamically loaded tables. Previously, only the DSDT could be replaced by the 890host. With this change, the AcpiOsTableOverride interface is called for each 891table found in the RSDT/XSDT during ACPICA initialization, and also whenever 892a table is dynamically loaded via the AML Load operator. 893 894Updated FADT flag definitions, especially the Boot Architecture flags. 895 896Debugger: For the Find command, automatically pad the input ACPI name with 897underscores if the name is shorter than 4 characters. This enables a match 898with the actual namespace entry which is itself padded with underscores. 899 900Example Code and Data Size: These are the sizes for the OS-independent 901acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 902debug version of the code includes the debug output trace mechanism and has a 903much larger code and data size. 904 905 Previous Release: 906 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 907 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 908 Current Release: 909 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total 910 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total 911 9122) iASL Compiler/Disassembler and Tools: 913 914Fix build error under Bison-2.4. 915 916Dissasembler: Enhanced FADT support. Added decoding of the Boot Architecture 917flags. Now decode all flags, regardless of the FADT version. Flag output 918includes the FADT version which first defined each flag. 919 920The iASL -g option now dumps the RSDT to a file (in addition to the FADT and 921DSDT). Windows only. 922 923---------------------------------------- 92404 December 2008. Summary of changes for version 20081204: 925 9261) ACPI CA Core Subsystem: 927 928The ACPICA Programmer Reference has been completely updated and revamped for 929this release. This includes updates to the external interfaces, OSL 930interfaces, the overview sections, and the debugger reference. 931 932Several new ACPICA interfaces have been implemented and documented in the 933programmer reference: 934AcpiReset - Writes the reset value to the FADT-defined reset register. 935AcpiDisableAllGpes - Disable all available GPEs. 936AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs. 937AcpiGetGpeDevice - Get the GPE block device associated with a GPE. 938AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs. 939AcpiRead - Low-level read ACPI register (was HwLowLevelRead.) 940AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.) 941 942Most of the public ACPI hardware-related interfaces have been moved to a new 943file, components/hardware/hwxface.c 944 945Enhanced the FADT parsing and low-level ACPI register access: The ACPI 946register lengths within the FADT are now used, and the low level ACPI 947register access no longer hardcodes the ACPI register lengths. Given that 948there may be some risk in actually trusting the FADT register lengths, a run- 949time option was added to fall back to the default hardcoded lengths if the 950FADT proves to contain incorrect values - UseDefaultRegisterWidths. This 951option is set to true for now, and a warning is issued if a suspicious FADT 952register length is overridden with the default value. 953 954Fixed a reference count issue in NsRepairObject. This problem was introduced 955in version 20081031 as part of a fix to repair Buffer objects within 956Packages. Lin Ming. 957 958Added semaphore support to the Linux/Unix application OS-services layer 959(OSL). ACPICA BZ 448. Lin Ming. 960 961Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes will 962be implemented in the OSL, or will binary semaphores be used instead. 963 964Example Code and Data Size: These are the sizes for the OS-independent 965acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 966debug version of the code includes the debug output trace mechanism and has a 967much larger code and data size. 968 969 Previous Release: 970 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 971 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 972 Current Release: 973 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total 974 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total 975 9762) iASL Compiler/Disassembler and Tools: 977 978iASL: Completed the '-e' option to include additional ACPI tables in order to 979aid with disassembly and External statement generation. ACPICA BZ 742. Lin 980Ming. 981 982iASL: Removed the "named object in while loop" error. The compiler cannot 983determine how many times a loop will execute. ACPICA BZ 730. 984 985Disassembler: Implemented support for FADT revision 2 (MS extension). ACPICA 986BZ 743. 987 988Disassembler: Updates for several ACPI data tables (HEST, EINJ, and MCFG). 989 990---------------------------------------- 99131 October 2008. Summary of changes for version 20081031: 992 9931) ACPI CA Core Subsystem: 994 995Restructured the ACPICA header files into public/private. acpi.h now includes 996only the "public" acpica headers. All other acpica headers are "private" and 997should not be included by acpica users. One new file, accommon.h is used to 998include the commonly used private headers for acpica code generation. Future 999plans include moving all private headers to a new subdirectory. 1000 1001Implemented an automatic Buffer->String return value conversion for 1002predefined ACPI methods. For these methods (such as _BIF), added automatic 1003conversion for return objects that are required to be a String, but a Buffer 1004was found instead. This can happen when reading string battery data from an 1005operation region, because it used to be difficult to convert the data from 1006buffer to string from within the ASL. Ensures that the host OS is provided 1007with a valid null-terminated string. Linux BZ 11822. 1008 1009Updated the FACS waking vector interfaces. Split AcpiSetFirmwareWakingVector 1010into two: one for the 32-bit vector, another for the 64-bit vector. This is 1011required because the host OS must setup the wake much differently for each 1012vector (real vs. protected mode, etc.) and the interface itself should not be 1013deciding which vector to use. Also, eliminated the GetFirmwareWakingVector 1014interface, as it served no purpose (only the firmware reads the vector, OS 1015only writes the vector.) ACPICA BZ 731. 1016 1017Implemented a mechanism to escape infinite AML While() loops. Added a loop 1018counter to force exit from AML While loops if the count becomes too large. 1019This can occur in poorly written AML when the hardware does not respond 1020within a while loop and the loop does not implement a timeout. The maximum 1021loop count is configurable. A new exception code is returned when a loop is 1022broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore. 1023 1024Optimized the execution of AML While loops. Previously, a control state 1025object was allocated and freed for each execution of the loop. The 1026optimization is to simply reuse the control state for each iteration. This 1027speeds up the raw loop execution time by about 5%. 1028 1029Enhanced the implicit return mechanism. For Windows compatibility, return an 1030implicit integer of value zero for methods that contain no executable code. 1031Such methods are seen in the field as stubs (presumably), and can cause 1032drivers to fail if they expect a return value. Lin Ming. 1033 1034Allow multiple backslashes as root prefixes in namepaths. In a fully 1035qualified namepath, allow multiple backslash prefixes. This can happen (and 1036is seen in the field) because of the use of a double-backslash in strings 1037(since backslash is the escape character) causing confusion. ACPICA BZ 739 1038Lin Ming. 1039 1040Emit a warning if two different FACS or DSDT tables are discovered in the 1041FADT. Checks if there are two valid but different addresses for the FACS and 1042DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.) 1043 1044Consolidated the method argument count validation code. Merged the code that 1045validates control method argument counts into the predefined validation 1046module. Eliminates possible multiple warnings for incorrect argument counts. 1047 1048Implemented ACPICA example code. Includes code for ACPICA initialization, 1049handler installation, and calling a control method. Available at 1050source/tools/examples. 1051 1052Added a global pointer for FACS table to simplify internal FACS access. Use 1053the global pointer instead of using AcpiGetTableByIndex for each FACS access. 1054This simplifies the code for the Global Lock and the Firmware Waking 1055Vector(s). 1056 1057Example Code and Data Size: These are the sizes for the OS-independent 1058acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1059debug version of the code includes the debug output trace mechanism and has a 1060much larger code and data size. 1061 1062 Previous Release: 1063 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 1064 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 1065 Current Release: 1066 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total 1067 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total 1068 10692) iASL Compiler/Disassembler and Tools: 1070 1071iASL: Improved disassembly of external method calls. Added the -e option to 1072allow the inclusion of additional ACPI tables to help with the disassembly of 1073method invocations and the generation of external declarations during the 1074disassembly. Certain external method invocations cannot be disassembled 1075properly without the actual declaration of the method. Use the -e option to 1076include the table where the external method(s) are actually declared. Most 1077useful for disassembling SSDTs that make method calls back to the master 1078DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl -d 1079-e dsdt.aml ssdt1.aml 1080 1081iASL: Fix to allow references to aliases within ASL namepaths. Fixes a 1082problem where the use of an alias within a namepath would result in a not 1083found error or cause the compiler to fault. Also now allows forward 1084references from the Alias operator itself. ACPICA BZ 738. 1085 1086---------------------------------------- 108726 September 2008. Summary of changes for version 20080926: 1088 10891) ACPI CA Core Subsystem: 1090 1091Designed and implemented a mechanism to validate predefined ACPI methods and 1092objects. This code validates the predefined ACPI objects (objects whose names 1093start with underscore) that appear in the namespace, at the time they are 1094evaluated. The argument count and the type of the returned object are 1095validated against the ACPI specification. The purpose of this validation is 1096to detect problems with the BIOS-implemented predefined ACPI objects before 1097the results are returned to the ACPI-related drivers. Future enhancements may 1098include actual repair of incorrect return objects where possible. Two new 1099files are nspredef.c and acpredef.h. 1100 1101Fixed a fault in the AML parser if a memory allocation fails during the Op 1102completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492. 1103 1104Fixed an issue with implicit return compatibility. This change improves the 1105implicit return mechanism to be more compatible with the MS interpreter. Lin 1106Ming, ACPICA BZ 349. 1107 1108Implemented support for zero-length buffer-to-string conversions. Allow zero 1109length strings during interpreter buffer-to-string conversions. For example, 1110during the ToDecimalString and ToHexString operators, as well as implicit 1111conversions. Fiodor Suietov, ACPICA BZ 585. 1112 1113Fixed two possible memory leaks in the error exit paths of 1114AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions are 1115similar in that they use a stack of state objects in order to eliminate 1116recursion. The stack must be fully unwound and deallocated if an error 1117occurs. Lin Ming. ACPICA BZ 383. 1118 1119Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the global 1120ACPI register table. This bit does not exist and is unused. Lin Ming, Bob 1121Moore ACPICA BZ 442. 1122 1123Removed the obsolete version number in module headers. Removed the 1124"$Revision" number that appeared in each module header. This version number 1125was useful under SourceSafe and CVS, but has no meaning under git. It is not 1126only incorrect, it could also be misleading. 1127 1128Example Code and Data Size: These are the sizes for the OS-independent 1129acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1130debug version of the code includes the debug output trace mechanism and has a 1131much larger code and data size. 1132 1133 Previous Release: 1134 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 1135 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 1136 Current Release: 1137 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total 1138 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total 1139 1140---------------------------------------- 114129 August 2008. Summary of changes for version 20080829: 1142 11431) ACPI CA Core Subsystem: 1144 1145Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type 1146Reference. Changes include the elimination of cheating on the Object field 1147for the DdbHandle subtype, addition of a reference class field to 1148differentiate the various reference types (instead of an AML opcode), and the 1149cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723 1150 1151Reduce an error to a warning for an incorrect method argument count. 1152Previously aborted with an error if too few arguments were passed to a 1153control method via the external ACPICA interface. Now issue a warning instead 1154and continue. Handles the case where the method inadvertently declares too 1155many arguments, but does not actually use the extra ones. Applies mainly to 1156the predefined methods. Lin Ming. Linux BZ 11032. 1157 1158Disallow the evaluation of named object types with no intrinsic value. Return 1159AE_TYPE for objects that have no value and therefore evaluation is undefined: 1160Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation of 1161these types were allowed, but an exception would be generated at some point 1162during the evaluation. Now, the error is generated up front. 1163 1164Fixed a possible memory leak in the AcpiNsGetExternalPathname function 1165(nsnames.c). Fixes a leak in the error exit path. 1166 1167Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These debug 1168levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and ACPI_EXCEPTION 1169interfaces. Also added ACPI_DB_EVENTS to correspond with the existing 1170ACPI_LV_EVENTS. 1171 1172Removed obsolete and/or unused exception codes from the acexcep.h header. 1173There is the possibility that certain device drivers may be affected if they 1174use any of these exceptions. 1175 1176The ACPICA documentation has been added to the public git source tree, under 1177acpica/documents. Included are the ACPICA programmer reference, the iASL 1178compiler reference, and the changes.txt release logfile. 1179 1180Example Code and Data Size: These are the sizes for the OS-independent 1181acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1182debug version of the code includes the debug output trace mechanism and has a 1183much larger code and data size. 1184 1185 Previous Release: 1186 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 1187 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 1188 Current Release: 1189 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 1190 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total 1191 11922) iASL Compiler/Disassembler and Tools: 1193 1194Allow multiple argument counts for the predefined _SCP method. ACPI 3.0 1195defines _SCP with 3 arguments. Previous versions defined it with only 1 1196argument. iASL now allows both definitions. 1197 1198iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for zero- 1199length subtables when disassembling ACPI tables. Also fixed a couple of 1200errors where a full 16-bit table type field was not extracted from the input 1201properly. 1202 1203acpisrc: Improve comment counting mechanism for generating source code 1204statistics. Count first and last lines of multi-line comments as whitespace, 1205not comment lines. Handle Linux legal header in addition to standard acpica 1206header. 1207 1208---------------------------------------- 1209 121029 July 2008. Summary of changes for version 20080729: 1211 12121) ACPI CA Core Subsystem: 1213 1214Fix a possible deadlock in the GPE dispatch. Remove call to 1215AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will attempt 1216to acquire the GPE lock but can deadlock since the GPE lock is already held 1217at dispatch time. This code was introduced in version 20060831 as a response 1218to Linux BZ 6881 and has since been removed from Linux. 1219 1220Add a function to dereference returned reference objects. Examines the return 1221object from a call to AcpiEvaluateObject. Any Index or RefOf references are 1222automatically dereferenced in an attempt to return something useful (these 1223reference types cannot be converted into an external ACPI_OBJECT.) Provides 1224MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105 1225 1226x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new 1227subtables for the MADT and one new subtable for the SRAT. Includes 1228disassembler and AcpiSrc support. Data from the Intel 64 Architecture x2APIC 1229Specification, June 2008. 1230 1231Additional error checking for pathname utilities. Add error check after all 1232calls to AcpiNsGetPathnameLength. Add status return from 1233AcpiNsBuildExternalPath and check after all calls. Add parameter validation 1234to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar. 1235 1236Return status from the global init function AcpiUtGlobalInitialize. This is 1237used by both the kernel subsystem and the utilities such as iASL compiler. 1238The function could possibly fail when the caches are initialized. Yang Yi. 1239 1240Add a function to decode reference object types to strings. Created for 1241improved error messages. 1242 1243Improve object conversion error messages. Better error messages during object 1244conversion from internal to the external ACPI_OBJECT. Used for external calls 1245to AcpiEvaluateObject. 1246 1247Example Code and Data Size: These are the sizes for the OS-independent 1248acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1249debug version of the code includes the debug output trace mechanism and has a 1250much larger code and data size. 1251 1252 Previous Release: 1253 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 1254 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 1255 Current Release: 1256 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total 1257 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total 1258 12592) iASL Compiler/Disassembler and Tools: 1260 1261Debugger: fix a possible hang when evaluating non-methods. Fixes a problem 1262introduced in version 20080701. If the object being evaluated (via execute 1263command) is not a method, the debugger can hang while trying to obtain non- 1264existent parameters. 1265 1266iASL: relax error for using reserved "_T_x" identifiers. These names can 1267appear in a disassembled ASL file if they were emitted by the original 1268compiler. Instead of issuing an error or warning and forcing the user to 1269manually change these names, issue a remark instead. 1270 1271iASL: error if named object created in while loop. Emit an error if any named 1272object is created within a While loop. If allowed, this code will generate a 1273run-time error on the second iteration of the loop when an attempt is made to 1274create the same named object twice. ACPICA bugzilla 730. 1275 1276iASL: Support absolute pathnames for include files. Add support for absolute 1277pathnames within the Include operator. previously, only relative pathnames 1278were supported. 1279 1280iASL: Enforce minimum 1 interrupt in interrupt macro and Resource Descriptor. 1281The ACPI spec requires one interrupt minimum. BZ 423 1282 1283iASL: Handle a missing ResourceSource arg, with a present SourceIndex. 1284Handles the case for the Interrupt Resource Descriptor where 1285the ResourceSource argument is omitted but ResourceSourceIndex 1286is present. Now leave room for the Index. BZ 426 1287 1288iASL: Prevent error message if CondRefOf target does not exist. Fixes cases 1289where an error message is emitted if the target does not exist. BZ 516 1290 1291iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option 1292(get ACPI tables on Windows). This was apparently broken in version 20070919. 1293 1294AcpiXtract: Handle EOF while extracting data. Correctly handle the case where 1295the EOF happens immediately after the last table in the input file. Print 1296completion message. Previously, no message was displayed in this case. 1297 1298---------------------------------------- 129901 July 2008. Summary of changes for version 20080701: 1300 13010) Git source tree / acpica.org 1302 1303Fixed a problem where a git-clone from http would not transfer the entire 1304source tree. 1305 13061) ACPI CA Core Subsystem: 1307 1308Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one 1309enable bit. Now performs a read-change-write of the enable register instead 1310of simply writing out the cached enable mask. This will prevent inadvertent 1311enabling of GPEs if a rogue GPE is received during initialization (before GPE 1312handlers are installed.) 1313 1314Implemented a copy for dynamically loaded tables. Previously, dynamically 1315loaded tables were simply mapped - but on some machines this memory is 1316corrupted after suspend. Now copy the table to a local buffer. For the 1317OpRegion case, added checksum verify. Use the table length from the table 1318header, not the region length. For the Buffer case, use the table length 1319also. Dennis Noordsij, Bob Moore. BZ 10734 1320 1321Fixed a problem where the same ACPI table could not be dynamically loaded and 1322unloaded more than once. Without this change, a table cannot be loaded again 1323once it has been loaded/unloaded one time. The current mechanism does not 1324unregister a table upon an unload. During a load, if the same table is found, 1325this no longer returns an exception. BZ 722 1326 1327Fixed a problem where the wrong descriptor length was calculated for the 1328EndTag descriptor in 64-bit mode. The "minimal" descriptors such as EndTag 1329are calculated as 12 bytes long, but the actual length in the internal 1330descriptor is 16 because of the round-up to 8 on the 64-bit build. Reported 1331by Linn Crosetto. BZ 728 1332 1333Fixed a possible memory leak in the Unload operator. The DdbHandle returned 1334by Load() did not have its reference count decremented during unload, leading 1335to a memory leak. Lin Ming. BZ 727 1336 1337Fixed a possible memory leak when deleting thermal/processor objects. Any 1338associated notify handlers (and objects) were not being deleted. Fiodor 1339Suietov. BZ 506 1340 1341Fixed the ordering of the ASCII names in the global mutex table to match the 1342actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug only. 1343Vegard Nossum. BZ 726 1344 1345Enhanced the AcpiGetObjectInfo interface to return the number of required 1346arguments if the object is a control method. Added this call to the debugger 1347so the proper number of default arguments are passed to a method. This 1348prevents a warning when executing methods from AcpiExec. 1349 1350Added a check for an invalid handle in AcpiGetObjectInfo. Return 1351AE_BAD_PARAMETER if input handle is invalid. BZ 474 1352 1353Fixed an extraneous warning from exconfig.c on the 64-bit build. 1354 1355Example Code and Data Size: These are the sizes for the OS-independent 1356acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1357debug version of the code includes the debug output trace mechanism and has a 1358much larger code and data size. 1359 1360 Previous Release: 1361 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 1362 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 1363 Current Release: 1364 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total 1365 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total 1366 13672) iASL Compiler/Disassembler and Tools: 1368 1369iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both 1370resource descriptor names. 1371 1372iASL: Detect invalid ASCII characters in input (windows version). Removed the 1373"-CF" flag from the flex compile, enables correct detection of non-ASCII 1374characters in the input. BZ 441 1375 1376iASL: Eliminate warning when result of LoadTable is not used. Eliminate the 1377"result of operation not used" warning when the DDB handle returned from 1378LoadTable is not used. The warning is not needed. BZ 590 1379 1380AcpiExec: Add support for dynamic table load/unload. Now calls _CFG method to 1381pass address of table to the AML. Added option to disable OpRegion simulation 1382to allow creation of an OpRegion with a real address that was passed to _CFG. 1383All of this allows testing of the Load and Unload operators from AcpiExec. 1384 1385Debugger: update tables command for unloaded tables. Handle unloaded tables 1386and use the standard table header output routine. 1387 1388---------------------------------------- 138909 June 2008. Summary of changes for version 20080609: 1390 13911) ACPI CA Core Subsystem: 1392 1393Implemented a workaround for reversed _PRT entries. A significant number of 1394BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This 1395change dynamically detects and repairs this problem. Provides compatibility 1396with MS ACPI. BZ 6859 1397 1398Simplified the internal ACPI hardware interfaces to eliminate the locking 1399flag parameter from Register Read/Write. Added a new external interface, 1400AcpiGetRegisterUnlocked. 1401 1402Fixed a problem where the invocation of a GPE control method could hang. This 1403was a regression introduced in 20080514. The new method argument count 1404validation mechanism can enter an infinite loop when a GPE method is 1405dispatched. Problem fixed by removing the obsolete code that passed GPE block 1406information to the notify handler via the control method parameter pointer. 1407 1408Fixed a problem where the _SST execution status was incorrectly returned to 1409the caller of AcpiEnterSleepStatePrep. This was a regression introduced in 141020080514. _SST is optional and a NOT_FOUND exception should never be 1411returned. BZ 716 1412 1413Fixed a problem where a deleted object could be accessed from within the AML 1414parser. This was a regression introduced in version 20080123 as a fix for the 1415Unload operator. Lin Ming. BZ 10669 1416 1417Cleaned up the debug operand dump mechanism. Eliminated unnecessary operands 1418and eliminated the use of a negative index in a loop. Operands are now 1419displayed in the correct order, not backwards. This also fixes a regression 1420introduced in 20080514 on 64-bit systems where the elimination of 1421ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 715 1422 1423Fixed a possible memory leak in EvPciConfigRegionSetup where the error exit 1424path did not delete a locally allocated structure. 1425 1426Updated definitions for the DMAR and SRAT tables to synchronize with the 1427current specifications. Includes disassembler support. 1428 1429Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect 1430loop termination value was used. Loop terminated on iteration early, missing 1431one mutex. Linn Crosetto 1432 1433Example Code and Data Size: These are the sizes for the OS-independent 1434acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1435debug version of the code includes the debug output trace mechanism and has a 1436much larger code and data size. 1437 1438 Previous Release: 1439 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 1440 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 1441 Current Release: 1442 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total 1443 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total 1444 14452) iASL Compiler/Disassembler and Tools: 1446 1447Disassembler: Implemented support for EisaId() within _CID objects. Now 1448disassemble integer _CID objects back to EisaId invocations, including 1449multiple integers within _CID packages. Includes single-step support for 1450debugger also. 1451 1452Disassembler: Added support for DMAR and SRAT table definition changes. 1453 1454---------------------------------------- 145514 May 2008. Summary of changes for version 20080514: 1456 14571) ACPI CA Core Subsystem: 1458 1459Fixed a problem where GPEs were enabled too early during the ACPICA 1460initialization. This could lead to "handler not installed" errors on some 1461machines. Moved GPE enable until after _REG/_STA/_INI methods are run. This 1462ensures that all operation regions and devices throughout the namespace have 1463been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916. 1464 1465Implemented a change to the enter sleep code. Moved execution of the _GTS 1466method to just before setting sleep enable bit. The execution was moved from 1467AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed 1468immediately before the SLP_EN bit is set, as per the ACPI specification. 1469Luming Yu, BZ 1653. 1470 1471Implemented a fix to disable unknown GPEs (2nd version). Now always disable 1472the GPE, even if ACPICA thinks that that it is already disabled. It is 1473possible that the AML or some other code has enabled the GPE unbeknownst to 1474the ACPICA code. 1475 1476Fixed a problem with the Field operator where zero-length fields would return 1477an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length ASL 1478field declarations in Field(), BankField(), and IndexField(). BZ 10606. 1479 1480Implemented a fix for the Load operator, now load the table at the namespace 1481root. This reverts a change introduced in version 20071019. The table is now 1482loaded at the namespace root even though this goes against the ACPI 1483specification. This provides compatibility with other ACPI implementations. 1484The ACPI specification will be updated to reflect this in ACPI 4.0. Lin Ming. 1485 1486Fixed a problem where ACPICA would not Load() tables with unusual signatures. 1487Now ignore ACPI table signature for Load() operator. Only "SSDT" is 1488acceptable to the ACPI spec, but tables are seen with OEMx and null sigs. 1489Therefore, signature validation is worthless. Apparently MS ACPI accepts such 1490signatures, ACPICA must be compatible. BZ 10454. 1491 1492Fixed a possible negative array index in AcpiUtValidateException. Added NULL 1493fields to the exception string arrays to eliminate a -1 subtraction on the 1494SubStatus field. 1495 1496Updated the debug tracking macros to reduce overall code and data size. 1497Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings 1498instead of pointers to static strings. Jan Beulich and Bob Moore. 1499 1500Implemented argument count checking in control method invocation via 1501AcpiEvaluateObject. Now emit an error if too few arguments, warning if too 1502many. This applies only to extern programmatic control method execution, not 1503method-to-method calls within the AML. Lin Ming. 1504 1505Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is no 1506longer needed, especially with the removal of 16-bit support. It was replaced 1507mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 bit on 150832/64-bit platforms is required. 1509 1510Added the C const qualifier for appropriate string constants -- mostly 1511MODULE_NAME and printf format strings. Jan Beulich. 1512 1513Example Code and Data Size: These are the sizes for the OS-independent 1514acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1515debug version of the code includes the debug output trace mechanism and has a 1516much larger code and data size. 1517 1518 Previous Release: 1519 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 1520 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 1521 Current Release: 1522 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total 1523 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total 1524 15252) iASL Compiler/Disassembler and Tools: 1526 1527Implemented ACPI table revision ID validation in the disassembler. Zero is 1528always invalid. For DSDTs, the ID controls the interpreter integer width. 1 1529means 32-bit and this is unusual. 2 or greater is 64-bit. 1530 1531---------------------------------------- 153221 March 2008. Summary of changes for version 20080321: 1533 15341) ACPI CA Core Subsystem: 1535 1536Implemented an additional change to the GPE support in order to suppress 1537spurious or stray GPEs. The AcpiEvDisableGpe function will now permanently 1538disable incoming GPEs that are neither enabled nor disabled -- meaning that 1539the GPE is unknown to the system. This should prevent future interrupt floods 1540from that GPE. BZ 6217 (Zhang Rui) 1541 1542Fixed a problem where NULL package elements were not returned to the 1543AcpiEvaluateObject interface correctly. The element was simply ignored 1544instead of returning a NULL ACPI_OBJECT package element, potentially causing 1545a buffer overflow and/or confusing the caller who expected a fixed number of 1546elements. BZ 10132 (Lin Ming, Bob Moore) 1547 1548Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word, Dword, 1549Qword), Field, BankField, and IndexField operators when invoked from inside 1550an executing control method. In this case, these operators created namespace 1551nodes that were incorrectly left marked as permanent nodes instead of 1552temporary nodes. This could cause a problem if there is race condition 1553between an exiting control method and a running namespace walk. (Reported by 1554Linn Crosetto) 1555 1556Fixed a problem where the CreateField and CreateXXXField operators would 1557incorrectly allow duplicate names (the name of the field) with no exception 1558generated. 1559 1560Implemented several changes for Notify handling. Added support for new Notify 1561values (ACPI 2.0+) and improved the Notify debug output. Notify on 1562PowerResource objects is no longer allowed, as per the ACPI specification. 1563(Bob Moore, Zhang Rui) 1564 1565All Reference Objects returned via the AcpiEvaluateObject interface are now 1566marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved for 1567NULL objects - either NULL package elements or unresolved named references. 1568 1569Fixed a problem where an extraneous debug message was produced for package 1570objects (when debugging enabled). The message "Package List length larger 1571than NumElements count" is now produced in the correct case, and is now an 1572error message rather than a debug message. Added a debug message for the 1573opposite case, where NumElements is larger than the Package List (the package 1574will be padded out with NULL elements as per the ACPI spec.) 1575 1576Implemented several improvements for the output of the ASL "Debug" object to 1577clarify and keep all data for a given object on one output line. 1578 1579Fixed two size calculation issues with the variable-length Start Dependent 1580resource descriptor. 1581 1582Example Code and Data Size: These are the sizes for the OS-independent 1583acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1584debug version of the code includes the debug output trace mechanism and has 1585a much larger code and data size. 1586 1587 Previous Release: 1588 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 1589 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 1590 Current Release: 1591 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total 1592 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total 1593 15942) iASL Compiler/Disassembler and Tools: 1595 1596Fixed a problem with the use of the Switch operator where execution of the 1597containing method by multiple concurrent threads could cause an 1598AE_ALREADY_EXISTS exception. This is caused by the fact that there is no 1599actual Switch opcode, it must be simulated with local named temporary 1600variables and if/else pairs. The solution chosen was to mark any method that 1601uses Switch as Serialized, thus preventing multiple thread entries. BZ 469. 1602 1603---------------------------------------- 160413 February 2008. Summary of changes for version 20080213: 1605 16061) ACPI CA Core Subsystem: 1607 1608Implemented another MS compatibility design change for GPE/Notify handling. 1609GPEs are now cleared/enabled asynchronously to allow all pending notifies to 1610complete first. It is expected that the OSL will queue the enable request 1611behind all pending notify requests (may require changes to the local host OSL 1612in AcpiOsExecute). Alexey Starikovskiy. 1613 1614Fixed a problem where buffer and package objects passed as arguments to a 1615control method via the external AcpiEvaluateObject interface could cause an 1616AE_AML_INTERNAL exception depending on the order and type of operators 1617executed by the target control method. 1618 1619Fixed a problem where resource descriptor size optimization could cause a 1620problem when a _CRS resource template is passed to a _SRS method. The _SRS 1621resource template must use the same descriptors (with the same size) as 1622returned from _CRS. This change affects the following resource descriptors: 1623IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 9487) 1624 1625Fixed a problem where a CopyObject to RegionField, BankField, and IndexField 1626objects did not perform an implicit conversion as it should. These types must 1627retain their initial type permanently as per the ACPI specification. However, 1628a CopyObject to all other object types should not perform an implicit 1629conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388 1630 1631Fixed a problem with the AcpiGetDevices interface where the mechanism to 1632match device CIDs did not examine the entire list of available CIDs, but 1633instead aborted on the first non-matching CID. Andrew Patterson. 1634 1635Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro was 1636inadvertently changed to return a 16-bit value instead of a 32-bit value, 1637truncating the upper dword of a 64-bit value. This macro is only used to 1638display debug output, so no incorrect calculations were made. Also, 1639reimplemented the macro so that a 64-bit shift is not performed by 1640inefficient compilers. 1641 1642Added missing va_end statements that should correspond with each va_start 1643statement. 1644 1645Example Code and Data Size: These are the sizes for the OS-independent 1646acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1647debug version of the code includes the debug output trace mechanism and has 1648a much larger code and data size. 1649 1650 Previous Release: 1651 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 1652 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 1653 Current Release: 1654 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total 1655 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total 1656 16572) iASL Compiler/Disassembler and Tools: 1658 1659Implemented full disassembler support for the following new ACPI tables: 1660BERT, EINJ, and ERST. Implemented partial disassembler support for the 1661complicated HEST table. These tables support the Windows Hardware Error 1662Architecture (WHEA). 1663 1664---------------------------------------- 166523 January 2008. Summary of changes for version 20080123: 1666 16671) ACPI CA Core Subsystem: 1668 1669Added the 2008 copyright to all module headers and signons. This affects 1670virtually every file in the ACPICA core subsystem, the iASL compiler, and 1671the tools/utilities. 1672 1673Fixed a problem with the SizeOf operator when used with Package and Buffer 1674objects. These objects have deferred execution for some arguments, and the 1675execution is now completed before the SizeOf is executed. This problem caused 1676unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) BZ 16779558 1678 1679Implemented an enhancement to the interpreter "slack mode". In the absence of 1680an explicit return or an implicitly returned object from the last executed 1681opcode, a control method will now implicitly return an integer of value 0 for 1682Microsoft compatibility. (Lin Ming) BZ 392 1683 1684Fixed a problem with the Load operator where an exception was not returned in 1685the case where the table is already loaded. (Lin Ming) BZ 463 1686 1687Implemented support for the use of DDBHandles as an Indexed Reference, as per 1688the ACPI spec. (Lin Ming) BZ 486 1689 1690Implemented support for UserTerm (Method invocation) for the Unload operator 1691as per the ACPI spec. (Lin Ming) BZ 580 1692 1693Fixed a problem with the LoadTable operator where the OemId and OemTableId 1694input strings could cause unexpected failures if they were shorter than the 1695maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576 1696 1697Implemented support for UserTerm (Method invocation) for the Unload operator 1698as per the ACPI spec. (Lin Ming) BZ 580 1699 1700Implemented header file support for new ACPI tables - BERT, ERST, EINJ, HEST, 1701IBFT, UEFI, WDAT. Disassembler support is forthcoming. 1702 1703Example Code and Data Size: These are the sizes for the OS-independent 1704acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1705debug version of the code includes the debug output trace mechanism and has 1706a much larger code and data size. 1707 1708 Previous Release: 1709 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 1710 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 1711 Current Release: 1712 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total 1713 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total 1714 17152) iASL Compiler/Disassembler and Tools: 1716 1717Implemented support in the disassembler for checksum validation on incoming 1718binary DSDTs and SSDTs. If incorrect, a message is displayed within the table 1719header dump at the start of the disassembly. 1720 1721Implemented additional debugging information in the namespace listing file 1722created during compilation. In addition to the namespace hierarchy, the full 1723pathname to each namespace object is displayed. 1724 1725Fixed a problem with the disassembler where invalid ACPI tables could cause 1726faults or infinite loops. 1727 1728Fixed an unexpected parse error when using the optional "parameter types" 1729list in a control method declaration. (Lin Ming) BZ 397 1730 1731Fixed a problem where two External declarations with the same name did not 1732cause an error (Lin Ming) BZ 509 1733 1734Implemented support for full TermArgs (adding Argx, Localx and method 1735invocation) for the ParameterData parameter to the LoadTable operator. (Lin 1736Ming) BZ 583,587 1737 1738---------------------------------------- 173919 December 2007. Summary of changes for version 20071219: 1740 17411) ACPI CA Core Subsystem: 1742 1743Implemented full support for deferred execution for the TermArg string 1744arguments for DataTableRegion. This enables forward references and full 1745operand resolution for the three string arguments. Similar to OperationRegion 1746deferred argument execution.) Lin Ming. BZ 430 1747 1748Implemented full argument resolution support for the BankValue argument to 1749BankField. Previously, only constants were supported, now any TermArg may be 1750used. Lin Ming BZ 387, 393 1751 1752Fixed a problem with AcpiGetDevices where the search of a branch of the 1753device tree could be terminated prematurely. In accordance with the ACPI 1754specification, the search down the current branch is terminated if a device 1755is both not present and not functional (instead of just not present.) Yakui 1756Zhao. 1757 1758Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly if 1759the underlying AML code changed the GPE enable registers. Now, any unknown 1760incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately disabled 1761instead of simply ignored. Rui Zhang. 1762 1763Fixed a problem with Index Fields where the Index register was incorrectly 1764limited to a maximum of 32 bits. Now any size may be used. 1765 1766Fixed a couple memory leaks associated with "implicit return" objects when 1767the AML Interpreter slack mode is enabled. Lin Ming BZ 349 1768 1769Example Code and Data Size: These are the sizes for the OS-independent 1770acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1771debug version of the code includes the debug output trace mechanism and has 1772a much larger code and data size. 1773 1774 Previous Release: 1775 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 1776 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 1777 Current Release: 1778 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total 1779 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total 1780 1781---------------------------------------- 178214 November 2007. Summary of changes for version 20071114: 1783 17841) ACPI CA Core Subsystem: 1785 1786Implemented event counters for each of the Fixed Events, the ACPI SCI 1787(interrupt) itself, and control methods executed. Named 1788AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. These 1789should be useful for debugging and statistics. 1790 1791Implemented a new external interface, AcpiGetStatistics, to retrieve the 1792contents of the various event counters. Returns the current values for 1793AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and 1794AcpiMethodCount. The interface can be expanded in the future if new counters 1795are added. Device drivers should use this interface rather than access the 1796counters directly. 1797 1798Fixed a problem with the FromBCD and ToBCD operators. With some compilers, 1799the ShortDivide function worked incorrectly, causing problems with the BCD 1800functions with large input values. A truncation from 64-bit to 32-bit 1801inadvertently occurred. Internal BZ 435. Lin Ming 1802 1803Fixed a problem with Index references passed as method arguments. References 1804passed as arguments to control methods were dereferenced immediately (before 1805control was passed to the called method). The references are now correctly 1806passed directly to the called method. BZ 5389. Lin Ming 1807 1808Fixed a problem with CopyObject used in conjunction with the Index operator. 1809The reference was incorrectly dereferenced before the copy. The reference is 1810now correctly copied. BZ 5391. Lin Ming 1811 1812Fixed a problem with Control Method references within Package objects. These 1813references are now correctly generated. This completes the package 1814construction overhaul that began in version 20071019. 1815 1816Example Code and Data Size: These are the sizes for the OS-independent 1817acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1818debug version of the code includes the debug output trace mechanism and has 1819a much larger code and data size. 1820 1821 Previous Release: 1822 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 1823 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 1824 Current Release: 1825 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total 1826 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total 1827 1828 18292) iASL Compiler/Disassembler and Tools: 1830 1831The AcpiExec utility now installs handlers for all of the predefined 1832Operation Region types. New types supported are: PCI_Config, CMOS, and 1833PCIBARTarget. 1834 1835Fixed a problem with the 64-bit version of AcpiExec where the extended (64- 1836bit) address fields for the DSDT and FACS within the FADT were not being 1837used, causing truncation of the upper 32-bits of these addresses. Lin Ming 1838and Bob Moore 1839 1840---------------------------------------- 184119 October 2007. Summary of changes for version 20071019: 1842 18431) ACPI CA Core Subsystem: 1844 1845Fixed a problem with the Alias operator when the target of the alias is a 1846named ASL operator that opens a new scope -- Scope, Device, PowerResource, 1847Processor, and ThermalZone. In these cases, any children of the original 1848operator could not be accessed via the alias, potentially causing unexpected 1849AE_NOT_FOUND exceptions. (BZ 9067) 1850 1851Fixed a problem with the Package operator where all named references were 1852created as object references and left otherwise unresolved. According to the 1853ACPI specification, a Package can only contain Data Objects or references to 1854control methods. The implication is that named references to Data Objects 1855(Integer, Buffer, String, Package, BufferField, Field) should be resolved 1856immediately upon package creation. This is the approach taken with this 1857change. References to all other named objects (Methods, Devices, Scopes, 1858etc.) are all now properly created as reference objects. (BZ 5328) 1859 1860Reverted a change to Notify handling that was introduced in version 186120070508. This version changed the Notify handling from asynchronous to 1862fully synchronous (Device driver Notify handling with respect to the Notify 1863ASL operator). It was found that this change caused more problems than it 1864solved and was removed by most users. 1865 1866Fixed a problem with the Increment and Decrement operators where the type of 1867the target object could be unexpectedly and incorrectly changed. (BZ 353) 1868Lin Ming. 1869 1870Fixed a problem with the Load and LoadTable operators where the table 1871location within the namespace was ignored. Instead, the table was always 1872loaded into the root or current scope. Lin Ming. 1873 1874Fixed a problem with the Load operator when loading a table from a buffer 1875object. The input buffer was prematurely zeroed and/or deleted. (BZ 577) 1876 1877Fixed a problem with the Debug object where a store of a DdbHandle reference 1878object to the Debug object could cause a fault. 1879 1880Added a table checksum verification for the Load operator, in the case where 1881the load is from a buffer. (BZ 578). 1882 1883Implemented additional parameter validation for the LoadTable operator. The 1884length of the input strings SignatureString, OemIdString, and OemTableId are 1885now checked for maximum lengths. (BZ 582) Lin Ming. 1886 1887Example Code and Data Size: These are the sizes for the OS-independent 1888acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1889debug version of the code includes the debug output trace mechanism and has 1890a much larger code and data size. 1891 1892 Previous Release: 1893 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 1894 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 1895 Current Release: 1896 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total 1897 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total 1898 1899 19002) iASL Compiler/Disassembler: 1901 1902Fixed a problem where if a single file was specified and the file did not 1903exist, no error message was emitted. (Introduced with wildcard support in 1904version 20070917.) 1905 1906---------------------------------------- 190719 September 2007. Summary of changes for version 20070919: 1908 19091) ACPI CA Core Subsystem: 1910 1911Designed and implemented new external interfaces to install and remove 1912handlers for ACPI table-related events. Current events that are defined are 1913LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as 1914they are dynamically loaded and unloaded. See AcpiInstallTableHandler and 1915AcpiRemoveTableHandler. (Lin Ming and Bob Moore) 1916 1917Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag 1918(acpi_serialized option on Linux) could cause some systems to hang during 1919initialization. (Bob Moore) BZ 8171 1920 1921Fixed a problem where objects of certain types (Device, ThermalZone, 1922Processor, PowerResource) can be not found if they are declared and 1923referenced from within the same control method (Lin Ming) BZ 341 1924 1925Example Code and Data Size: These are the sizes for the OS-independent 1926acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1927debug version of the code includes the debug output trace mechanism and has 1928a much larger code and data size. 1929 1930 Previous Release: 1931 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 1932 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 1933 Current Release: 1934 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total 1935 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total 1936 1937 19382) iASL Compiler/Disassembler: 1939 1940Implemented support to allow multiple files to be compiled/disassembled in a 1941single invocation. This includes command line wildcard support for both the 1942Windows and Unix versions of the compiler. This feature simplifies the 1943disassembly and compilation of multiple ACPI tables in a single directory. 1944 1945---------------------------------------- 194608 May 2007. Summary of changes for version 20070508: 1947 19481) ACPI CA Core Subsystem: 1949 1950Implemented a Microsoft compatibility design change for the handling of the 1951Notify AML operator. Previously, notify handlers were dispatched and 1952executed completely asynchronously in a deferred thread. The new design 1953still executes the notify handlers in a different thread, but the original 1954thread that executed the Notify() now waits at a synchronization point for 1955the notify handler to complete. Some machines depend on a synchronous Notify 1956operator in order to operate correctly. 1957 1958Implemented support to allow Package objects to be passed as method 1959arguments to the external AcpiEvaluateObject interface. Previously, this 1960would return the AE_NOT_IMPLEMENTED exception. This feature had not been 1961implemented since there were no reserved control methods that required it 1962until recently. 1963 1964Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs that 1965contained invalid non-zero values in reserved fields could cause later 1966failures because these fields have meaning in later revisions of the FADT. 1967For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The fields 1968are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.) 1969 1970Fixed a problem where the Global Lock handle was not properly updated if a 1971thread that acquired the Global Lock via executing AML code then attempted 1972to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by Joe 1973Liu. 1974 1975Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list 1976could be corrupted if the interrupt being removed was at the head of the 1977list. Reported by Linn Crosetto. 1978 1979Example Code and Data Size: These are the sizes for the OS-independent 1980acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 1981debug version of the code includes the debug output trace mechanism and has 1982a much larger code and data size. 1983 1984 Previous Release: 1985 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 1986 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 1987 Current Release: 1988 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total 1989 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total 1990 1991---------------------------------------- 199220 March 2007. Summary of changes for version 20070320: 1993 19941) ACPI CA Core Subsystem: 1995 1996Implemented a change to the order of interpretation and evaluation of AML 1997operand objects within the AML interpreter. The interpreter now evaluates 1998operands in the order that they appear in the AML stream (and the 1999corresponding ASL code), instead of in the reverse order (after the entire 2000operand list has been parsed). The previous behavior caused several subtle 2001incompatibilities with the Microsoft AML interpreter as well as being 2002somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov. 2003 2004Implemented a change to the ACPI Global Lock support. All interfaces to the 2005global lock now allow the same thread to acquire the lock multiple times. 2006This affects the AcpiAcquireGlobalLock external interface to the global lock 2007as well as the internal use of the global lock to support AML fields -- a 2008control method that is holding the global lock can now simultaneously access 2009AML fields that require global lock protection. Previously, in both cases, 2010this would have resulted in an AE_ALREADY_ACQUIRED exception. The change to 2011AcpiAcquireGlobalLock is of special interest to drivers for the Embedded 2012Controller. There is no change to the behavior of the AML Acquire operator, 2013as this can already be used to acquire a mutex multiple times by the same 2014thread. BZ 8066. With assistance from Alexey Starikovskiy. 2015 2016Fixed a problem where invalid objects could be referenced in the AML 2017Interpreter after error conditions. During operand evaluation, ensure that 2018the internal "Return Object" field is cleared on error and only valid 2019pointers are stored there. Caused occasional access to deleted objects that 2020resulted in "large reference count" warning messages. Valery Podrezov. 2021 2022Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur on 2023deeply nested control method invocations. BZ 7873, local BZ 487. Valery 2024Podrezov. 2025 2026Fixed an internal problem with the handling of result objects on the 2027interpreter result stack. BZ 7872. Valery Podrezov. 2028 2029Removed obsolete code that handled the case where AML_NAME_OP is the target 2030of a reference (Reference.Opcode). This code was no longer necessary. BZ 20317874. Valery Podrezov. 2032 2033Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This was a 2034remnant from the previously discontinued 16-bit support. 2035 2036Example Code and Data Size: These are the sizes for the OS-independent 2037acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2038debug version of the code includes the debug output trace mechanism and has 2039a much larger code and data size. 2040 2041 Previous Release: 2042 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2043 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 2044 Current Release: 2045 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2046 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total 2047 2048---------------------------------------- 204926 January 2007. Summary of changes for version 20070126: 2050 20511) ACPI CA Core Subsystem: 2052 2053Added the 2007 copyright to all module headers and signons. This affects 2054virtually every file in the ACPICA core subsystem, the iASL compiler, and 2055the utilities. 2056 2057Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable 2058during a table load. A bad pointer was passed in the case where the DSDT is 2059overridden, causing a fault in this case. 2060 2061Example Code and Data Size: These are the sizes for the OS-independent 2062acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2063debug version of the code includes the debug output trace mechanism and has 2064a much larger code and data size. 2065 2066 Previous Release: 2067 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2068 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 2069 Current Release: 2070 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2071 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 2072 2073---------------------------------------- 207415 December 2006. Summary of changes for version 20061215: 2075 20761) ACPI CA Core Subsystem: 2077 2078Support for 16-bit ACPICA has been completely removed since it is no longer 2079necessary and it clutters the code. All 16-bit macros, types, and 2080conditional compiles have been removed, cleaning up and simplifying the code 2081across the entire subsystem. DOS support is no longer needed since the 2082bootable Linux firmware kit is now available. 2083 2084The handler for the Global Lock is now removed during AcpiTerminate to 2085enable a clean subsystem restart, via the implementation of the 2086AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz, 2087HP) 2088 2089Implemented enhancements to the multithreading support within the debugger 2090to enable improved multithreading debugging and evaluation of the subsystem. 2091(Valery Podrezov) 2092 2093Debugger: Enhanced the Statistics/Memory command to emit the total (maximum) 2094memory used during the execution, as well as the maximum memory consumed by 2095each of the various object types. (Valery Podrezov) 2096 2097Example Code and Data Size: These are the sizes for the OS-independent 2098acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2099debug version of the code includes the debug output trace mechanism and has 2100a much larger code and data size. 2101 2102 Previous Release: 2103 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 2104 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 2105 Current Release: 2106 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total 2107 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total 2108 2109 21102) iASL Compiler/Disassembler and Tools: 2111 2112AcpiExec: Implemented a new option (-m) to display full memory use 2113statistics upon subsystem/program termination. (Valery Podrezov) 2114 2115---------------------------------------- 211609 November 2006. Summary of changes for version 20061109: 2117 21181) ACPI CA Core Subsystem: 2119 2120Optimized the Load ASL operator in the case where the source operand is an 2121operation region. Simply map the operation region memory, instead of 2122performing a bytewise read. (Region must be of type SystemMemory, see 2123below.) 2124 2125Fixed the Load ASL operator for the case where the source operand is a 2126region field. A buffer object is also allowed as the source operand. BZ 480 2127 2128Fixed a problem where the Load ASL operator allowed the source operand to be 2129an operation region of any type. It is now restricted to regions of type 2130SystemMemory, as per the ACPI specification. BZ 481 2131 2132Additional cleanup and optimizations for the new Table Manager code. 2133 2134AcpiEnable will now fail if all of the required ACPI tables are not loaded 2135(FADT, FACS, DSDT). BZ 477 2136 2137Added #pragma pack(8/4) to acobject.h to ensure that the structures in this 2138header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been 2139manually optimized to be aligned and will not work if it is byte-packed. 2140 2141Example Code and Data Size: These are the sizes for the OS-independent 2142acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2143debug version of the code includes the debug output trace mechanism and has 2144a much larger code and data size. 2145 2146 Previous Release: 2147 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 2148 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 2149 Current Release: 2150 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total 2151 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total 2152 2153 21542) iASL Compiler/Disassembler and Tools: 2155 2156Fixed a problem where the presence of the _OSI predefined control method 2157within complex expressions could cause an internal compiler error. 2158 2159AcpiExec: Implemented full region support for multiple address spaces. 2160SpaceId is now part of the REGION object. BZ 429 2161 2162---------------------------------------- 216311 October 2006. Summary of changes for version 20061011: 2164 21651) ACPI CA Core Subsystem: 2166 2167Completed an AML interpreter performance enhancement for control method 2168execution. Previously a 2-pass parse/execution, control methods are now 2169completely parsed and executed in a single pass. This improves overall 2170interpreter performance by ~25%, reduces code size, and reduces CPU stack 2171use. (Valery Podrezov + interpreter changes in version 20051202 that 2172eliminated namespace loading during the pass one parse.) 2173 2174Implemented _CID support for PCI Root Bridge detection. If the _HID does not 2175match the predefined PCI Root Bridge IDs, the _CID list (if present) is now 2176obtained and also checked for an ID match. 2177 2178Implemented additional support for the PCI _ADR execution: upsearch until a 2179device scope is found before executing _ADR. This allows PCI_Config 2180operation regions to be declared locally within control methods underneath 2181PCI device objects. 2182 2183Fixed a problem with a possible race condition between threads executing 2184AcpiWalkNamespace and the AML interpreter. This condition was removed by 2185modifying AcpiWalkNamespace to (by default) ignore all temporary namespace 2186entries created during any concurrent control method execution. An 2187additional namespace race condition is known to exist between 2188AcpiWalkNamespace and the Load/Unload ASL operators and is still under 2189investigation. 2190 2191Restructured the AML ParseLoop function, breaking it into several 2192subfunctions in order to reduce CPU stack use and improve maintainability. 2193(Mikhail Kouzmich) 2194 2195AcpiGetHandle: Fix for parameter validation to detect invalid combinations 2196of prefix handle and pathname. BZ 478 2197 2198Example Code and Data Size: These are the sizes for the OS-independent 2199acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2200debug version of the code includes the debug output trace mechanism and has 2201a much larger code and data size. 2202 2203 Previous Release: 2204 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 2205 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 2206 Current Release: 2207 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total 2208 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total 2209 22102) iASL Compiler/Disassembler and Tools: 2211 2212Ported the -g option (get local ACPI tables) to the new ACPICA Table Manager 2213to restore original behavior. 2214 2215---------------------------------------- 221627 September 2006. Summary of changes for version 20060927: 2217 22181) ACPI CA Core Subsystem: 2219 2220Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister. 2221These functions now use a spinlock for mutual exclusion and the interrupt 2222level indication flag is not needed. 2223 2224Fixed a problem with the Global Lock where the lock could appear to be 2225obtained before it is actually obtained. The global lock semaphore was 2226inadvertently created with one unit instead of zero units. (BZ 464) Fiodor 2227Suietov. 2228 2229Fixed a possible memory leak and fault in AcpiExResolveObjectToValue during 2230a read from a buffer or region field. (BZ 458) Fiodor Suietov. 2231 2232Example Code and Data Size: These are the sizes for the OS-independent 2233acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2234debug version of the code includes the debug output trace mechanism and has 2235a much larger code and data size. 2236 2237 Previous Release: 2238 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 2239 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 2240 Current Release: 2241 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 2242 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total 2243 2244 22452) iASL Compiler/Disassembler and Tools: 2246 2247Fixed a compilation problem with the pre-defined Resource Descriptor field 2248names where an "object does not exist" error could be incorrectly generated 2249if the parent ResourceTemplate pathname places the template within a 2250different namespace scope than the current scope. (BZ 7212) 2251 2252Fixed a problem where the compiler could hang after syntax errors detected 2253in an ElseIf construct. (BZ 453) 2254 2255Fixed a problem with the AmlFilename parameter to the DefinitionBlock() 2256operator. An incorrect output filename was produced when this parameter was 2257a null string (""). Now, the original input filename is used as the AML 2258output filename, with an ".aml" extension. 2259 2260Implemented a generic batch command mode for the AcpiExec utility (execute 2261any AML debugger command) (Valery Podrezov). 2262 2263---------------------------------------- 226412 September 2006. Summary of changes for version 20060912: 2265 22661) ACPI CA Core Subsystem: 2267 2268Enhanced the implementation of the "serialized mode" of the interpreter 2269(enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is 2270specified, instead of creating a serialization semaphore per control method, 2271the interpreter lock is simply no longer released before a blocking 2272operation during control method execution. This effectively makes the AML 2273Interpreter single-threaded. The overhead of a semaphore per-method is 2274eliminated. 2275 2276Fixed a regression where an error was no longer emitted if a control method 2277attempts to create 2 objects of the same name. This once again returns 2278AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism that 2279will dynamically serialize the control method to possible prevent future 2280errors. (BZ 440) 2281 2282Integrated a fix for a problem with PCI Express HID detection in the PCI 2283Config Space setup procedure. (BZ 7145) 2284 2285Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the 2286AcpiHwInitialize function - the FADT registers are now validated when the 2287table is loaded. 2288 2289Added two new warnings during FADT verification - 1) if the FADT is larger 2290than the largest known FADT version, and 2) if there is a mismatch between a 229132-bit block address and the 64-bit X counterpart (when both are non-zero.) 2292 2293Example Code and Data Size: These are the sizes for the OS-independent 2294acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2295debug version of the code includes the debug output trace mechanism and has 2296a much larger code and data size. 2297 2298 Previous Release: 2299 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 2300 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 2301 Current Release: 2302 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total 2303 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total 2304 2305 23062) iASL Compiler/Disassembler and Tools: 2307 2308Fixed a problem with the implementation of the Switch() operator where the 2309temporary variable was declared too close to the actual Switch, instead of 2310at method level. This could cause a problem if the Switch() operator is 2311within a while loop, causing an error on the second iteration. (BZ 460) 2312 2313Disassembler - fix for error emitted for unknown type for target of scope 2314operator. Now, ignore it and continue. 2315 2316Disassembly of an FADT now verifies the input FADT and reports any errors 2317found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs. 2318 2319Disassembly of raw data buffers with byte initialization data now prefixes 2320each output line with the current buffer offset. 2321 2322Disassembly of ASF! table now includes all variable-length data fields at 2323the end of some of the subtables. 2324 2325The disassembler now emits a comment if a buffer appears to be a 2326ResourceTemplate, but cannot be disassembled as such because the EndTag does 2327not appear at the very end of the buffer. 2328 2329AcpiExec - Added the "-t" command line option to enable the serialized mode 2330of the AML interpreter. 2331 2332---------------------------------------- 233331 August 2006. Summary of changes for version 20060831: 2334 23351) ACPI CA Core Subsystem: 2336 2337Miscellaneous fixes for the Table Manager: 2338- Correctly initialize internal common FADT for all 64-bit "X" fields 2339- Fixed a couple table mapping issues during table load 2340- Fixed a couple alignment issues for IA64 2341- Initialize input array to zero in AcpiInitializeTables 2342- Additional parameter validation for AcpiGetTable, AcpiGetTableHeader, 2343AcpiGetTableByIndex 2344 2345Change for GPE support: when a "wake" GPE is received, all wake GPEs are now 2346immediately disabled to prevent the waking GPE from firing again and to 2347prevent other wake GPEs from interrupting the wake process. 2348 2349Added the AcpiGpeCount global that tracks the number of processed GPEs, to 2350be used for debugging systems with a large number of ACPI interrupts. 2351 2352Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in 2353both the ACPICA headers and the disassembler. 2354 2355Example Code and Data Size: These are the sizes for the OS-independent 2356acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2357debug version of the code includes the debug output trace mechanism and has 2358a much larger code and data size. 2359 2360 Previous Release: 2361 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 2362 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 2363 Current Release: 2364 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total 2365 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total 2366 2367 23682) iASL Compiler/Disassembler and Tools: 2369 2370Disassembler support for the DMAR ACPI table. 2371 2372---------------------------------------- 237323 August 2006. Summary of changes for version 20060823: 2374 23751) ACPI CA Core Subsystem: 2376 2377The Table Manager component has been completely redesigned and 2378reimplemented. The new design is much simpler, and reduces the overall code 2379and data size of the kernel-resident ACPICA by approximately 5%. Also, it is 2380now possible to obtain the ACPI tables very early during kernel 2381initialization, even before dynamic memory management is initialized. 2382(Alexey Starikovskiy, Fiodor Suietov, Bob Moore) 2383 2384Obsolete ACPICA interfaces: 2385 2386- AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel init 2387time). 2388- AcpiLoadTable: Not needed. 2389- AcpiUnloadTable: Not needed. 2390 2391New ACPICA interfaces: 2392 2393- AcpiInitializeTables: Must be called before the table manager can be used. 2394- AcpiReallocateRootTable: Used to transfer the root table to dynamically 2395allocated memory after it becomes available. 2396- AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI tables 2397in the RSDT/XSDT. 2398 2399Other ACPICA changes: 2400 2401- AcpiGetTableHeader returns the actual mapped table header, not a copy. Use 2402AcpiOsUnmapMemory to free this mapping. 2403- AcpiGetTable returns the actual mapped table. The mapping is managed 2404internally and must not be deleted by the caller. Use of this interface 2405causes no additional dynamic memory allocation. 2406- AcpiFindRootPointer: Support for physical addressing has been eliminated, 2407it appeared to be unused. 2408- The interface to AcpiOsMapMemory has changed to be consistent with the 2409other allocation interfaces. 2410- The interface to AcpiOsGetRootPointer has changed to eliminate unnecessary 2411parameters. 2412- ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 64- 2413bit platforms. Was previously 64 bits on all platforms. 2414- The interface to the ACPI Global Lock acquire/release macros have changed 2415slightly since ACPICA no longer keeps a local copy of the FACS with a 2416constructed pointer to the actual global lock. 2417 2418Porting to the new table manager: 2419 2420- AcpiInitializeTables: Must be called once, and can be called anytime 2421during the OS initialization process. It allows the host to specify an area 2422of memory to be used to store the internal version of the RSDT/XSDT (root 2423table). This allows the host to access ACPI tables before memory management 2424is initialized and running. 2425- AcpiReallocateRootTable: Can be called after memory management is running 2426to copy the root table to a dynamically allocated array, freeing up the 2427scratch memory specified in the call to AcpiInitializeTables. 2428- AcpiSubsystemInitialize: This existing interface is independent of the 2429Table Manager, and does not have to be called before the Table Manager can 2430be used, it only must be called before the rest of ACPICA can be used. 2431- ACPI Tables: Some changes have been made to the names and structure of the 2432actbl.h and actbl1.h header files and may require changes to existing code. 2433For example, bitfields have been completely removed because of their lack of 2434portability across C compilers. 2435- Update interfaces to the Global Lock acquire/release macros if local 2436versions are used. (see acwin.h) 2437 2438Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c 2439 2440New files: tbfind.c 2441 2442Example Code and Data Size: These are the sizes for the OS-independent 2443acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2444debug version of the code includes the debug output trace mechanism and has 2445a much larger code and data size. 2446 2447 Previous Release: 2448 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 2449 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 2450 Current Release: 2451 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total 2452 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total 2453 2454 24552) iASL Compiler/Disassembler and Tools: 2456 2457No changes for this release. 2458 2459---------------------------------------- 246021 July 2006. Summary of changes for version 20060721: 2461 24621) ACPI CA Core Subsystem: 2463 2464The full source code for the ASL test suite used to validate the iASL 2465compiler and the ACPICA core subsystem is being released with the ACPICA 2466source for the first time. The source is contained in a separate package and 2467consists of over 1100 files that exercise all ASL/AML operators. The package 2468should appear on the Intel/ACPI web site shortly. (Valery Podrezov, Fiodor 2469Suietov) 2470 2471Completed a new design and implementation for support of the ACPI Global 2472Lock. On the OS side, the global lock is now treated as a standard AML 2473mutex. Previously, multiple OS threads could "acquire" the global lock 2474simultaneously. However, this could cause the BIOS to be starved out of the 2475lock - especially in cases such as the Embedded Controller driver where 2476there is a tight coupling between the OS and the BIOS. 2477 2478Implemented an optimization for the ACPI Global Lock interrupt mechanism. 2479The Global Lock interrupt handler no longer queues the execution of a 2480separate thread to signal the global lock semaphore. Instead, the semaphore 2481is signaled directly from the interrupt handler. 2482 2483Implemented support within the AML interpreter for package objects that 2484contain a larger AML length (package list length) than the package element 2485count. In this case, the length of the package is truncated to match the 2486package element count. Some BIOS code apparently modifies the package length 2487on the fly, and this change supports this behavior. Provides compatibility 2488with the MS AML interpreter. (With assistance from Fiodor Suietov) 2489 2490Implemented a temporary fix for the BankValue parameter of a Bank Field to 2491support all constant values, now including the Zero and One opcodes. 2492Evaluation of this parameter must eventually be converted to a full TermArg 2493evaluation. A not-implemented error is now returned (temporarily) for non- 2494constant values for this parameter. 2495 2496Fixed problem reports (Fiodor Suietov) integrated: 2497- Fix for premature object deletion after CopyObject on Operation Region (BZ 2498350) 2499 2500Example Code and Data Size: These are the sizes for the OS-independent 2501acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2502debug version of the code includes the debug output trace mechanism and has 2503a much larger code and data size. 2504 2505 Previous Release: 2506 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total 2507 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total 2508 Current Release: 2509 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 2510 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 2511 2512 25132) iASL Compiler/Disassembler and Tools: 2514 2515No changes for this release. 2516 2517---------------------------------------- 251807 July 2006. Summary of changes for version 20060707: 2519 25201) ACPI CA Core Subsystem: 2521 2522Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers 2523that do not allow the initialization of address pointers within packed 2524structures - even though the hardware itself may support misaligned 2525transfers. Some of the debug data structures are packed by default to 2526minimize size. 2527 2528Added an error message for the case where AcpiOsGetThreadId() returns zero. 2529A non-zero value is required by the core ACPICA code to ensure the proper 2530operation of AML mutexes and recursive control methods. 2531 2532The DSDT is now the only ACPI table that determines whether the AML 2533interpreter is in 32-bit or 64-bit mode. Not really a functional change, but 2534the hooks for per-table 32/64 switching have been removed from the code. A 2535clarification to the ACPI specification is forthcoming in ACPI 3.0B. 2536 2537Fixed a possible leak of an OwnerID in the error path of 2538AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID 2539deletion to a single place in AcpiTbUninstallTable to correct possible leaks 2540when using the AcpiTbDeleteTablesByType interface (with assistance from 2541Lance Ortiz.) 2542 2543Fixed a problem with Serialized control methods where the semaphore 2544associated with the method could be over-signaled after multiple method 2545invocations. 2546 2547Fixed two issues with the locking of the internal namespace data structure. 2548Both the Unload() operator and AcpiUnloadTable interface now lock the 2549namespace during the namespace deletion associated with the table unload 2550(with assistance from Linn Crosetto.) 2551 2552Fixed problem reports (Valery Podrezov) integrated: 2553- Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426) 2554 2555Fixed problem reports (Fiodor Suietov) integrated: 2556- Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369) 2557- On Address Space handler deletion, needless deactivation call (BZ 374) 2558- AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 375) 2559- Possible memory leak, Notify sub-objects of Processor, Power, ThermalZone 2560(BZ 376) 2561- AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378) 2562- Minimum Length of RSDT should be validated (BZ 379) 2563- AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no 2564Handler (BZ (380) 2565- AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type loaded 2566(BZ 381) 2567 2568Example Code and Data Size: These are the sizes for the OS-independent 2569acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2570debug version of the code includes the debug output trace mechanism and has 2571a much larger code and data size. 2572 2573 Previous Release: 2574 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 2575 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 2576 Current Release: 2577 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total 2578 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total 2579 2580 25812) iASL Compiler/Disassembler and Tools: 2582 2583Fixed problem reports: 2584Compiler segfault when ASL contains a long (>1024) String declaration (BZ 2585436) 2586 2587---------------------------------------- 258823 June 2006. Summary of changes for version 20060623: 2589 25901) ACPI CA Core Subsystem: 2591 2592Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This 2593allows the type to be customized to the host OS for improved efficiency 2594(since a spinlock is usually a very small object.) 2595 2596Implemented support for "ignored" bits in the ACPI registers. According to 2597the ACPI specification, these bits should be preserved when writing the 2598registers via a read/modify/write cycle. There are 3 bits preserved in this 2599manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11]. 2600 2601Implemented the initial deployment of new OSL mutex interfaces. Since some 2602host operating systems have separate mutex and semaphore objects, this 2603feature was requested. The base code now uses mutexes (and the new mutex 2604interfaces) wherever a binary semaphore was used previously. However, for 2605the current release, the mutex interfaces are defined as macros to map them 2606to the existing semaphore interfaces. Therefore, no OSL changes are required 2607at this time. (See acpiosxf.h) 2608 2609Fixed several problems with the support for the control method SyncLevel 2610parameter. The SyncLevel now works according to the ACPI specification and 2611in concert with the Mutex SyncLevel parameter, since the current SyncLevel 2612is a property of the executing thread. Mutual exclusion for control methods 2613is now implemented with a mutex instead of a semaphore. 2614 2615Fixed three instances of the use of the C shift operator in the bitfield 2616support code (exfldio.c) to avoid the use of a shift value larger than the 2617target data width. The behavior of C compilers is undefined in this case and 2618can cause unpredictable results, and therefore the case must be detected and 2619avoided. (Fiodor Suietov) 2620 2621Added an info message whenever an SSDT or OEM table is loaded dynamically 2622via the Load() or LoadTable() ASL operators. This should improve debugging 2623capability since it will show exactly what tables have been loaded (beyond 2624the tables present in the RSDT/XSDT.) 2625 2626Example Code and Data Size: These are the sizes for the OS-independent 2627acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2628debug version of the code includes the debug output trace mechanism and has 2629a much larger code and data size. 2630 2631 Previous Release: 2632 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 2633 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 2634 Current Release: 2635 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total 2636 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total 2637 2638 26392) iASL Compiler/Disassembler and Tools: 2640 2641No changes for this release. 2642 2643---------------------------------------- 264408 June 2006. Summary of changes for version 20060608: 2645 26461) ACPI CA Core Subsystem: 2647 2648Converted the locking mutex used for the ACPI hardware to a spinlock. This 2649change should eliminate all problems caused by attempting to acquire a 2650semaphore at interrupt level, and it means that all ACPICA external 2651interfaces that directly access the ACPI hardware can be safely called from 2652interrupt level. OSL code that implements the semaphore interfaces should be 2653able to eliminate any workarounds for being called at interrupt level. 2654 2655Fixed a regression introduced in 20060526 where the ACPI device 2656initialization could be prematurely aborted with an AE_NOT_FOUND if a device 2657did not have an optional _INI method. 2658 2659Fixed an IndexField issue where a write to the Data Register should be 2660limited in size to the AccessSize (width) of the IndexField itself. (BZ 433, 2661Fiodor Suietov) 2662 2663Fixed problem reports (Valery Podrezov) integrated: 2664- Allow store of ThermalZone objects to Debug object (BZ 5369/5370) 2665 2666Fixed problem reports (Fiodor Suietov) integrated: 2667- AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364) 2668 2669Removed four global mutexes that were obsolete and were no longer being 2670used. 2671 2672Example Code and Data Size: These are the sizes for the OS-independent 2673acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2674debug version of the code includes the debug output trace mechanism and has 2675a much larger code and data size. 2676 2677 Previous Release: 2678 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 2679 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 2680 Current Release: 2681 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total 2682 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total 2683 2684 26852) iASL Compiler/Disassembler and Tools: 2686 2687Fixed a fault when using -g option (get tables from registry) on Windows 2688machines. 2689 2690Fixed problem reports integrated: 2691- Generate error if CreateField NumBits parameter is zero. (BZ 405) 2692- Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor 2693Suietov) 2694- Global table revision override (-r) is ignored (BZ 413) 2695 2696---------------------------------------- 269726 May 2006. Summary of changes for version 20060526: 2698 26991) ACPI CA Core Subsystem: 2700 2701Restructured, flattened, and simplified the internal interfaces for 2702namespace object evaluation - resulting in smaller code, less CPU stack use, 2703and fewer interfaces. (With assistance from Mikhail Kouzmich) 2704 2705Fixed a problem with the CopyObject operator where the first parameter was 2706not typed correctly for the parser, interpreter, compiler, and disassembler. 2707Caused various errors and unexpected behavior. 2708 2709Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits 2710produced incorrect results with some C compilers. Since the behavior of C 2711compilers when the shift value is larger than the datatype width is 2712apparently not well defined, the interpreter now detects this condition and 2713simply returns zero as expected in all such cases. (BZ 395) 2714 2715Fixed problem reports (Valery Podrezov) integrated: 2716- Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329) 2717- Allow interpreter to handle nested method declarations (BZ 5361) 2718 2719Fixed problem reports (Fiodor Suietov) integrated: 2720- AcpiTerminate doesn't free debug memory allocation list objects (BZ 355) 2721- After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 356) 2722- AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357) 2723- Resource Manager should return AE_TYPE for non-device objects (BZ 358) 2724- Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359) 2725- Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360) 2726- Incomplete cleanup branch in AcpiPsParseAml (BZ 361) 2727- Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362) 2728- AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ 365) 2729- Status of the Global Initialization Handler call not used (BZ 366) 2730- Incorrect object parameter to Global Initialization Handler (BZ 367) 2731 2732Example Code and Data Size: These are the sizes for the OS-independent 2733acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2734debug version of the code includes the debug output trace mechanism and has 2735a much larger code and data size. 2736 2737 Previous Release: 2738 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 2739 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 2740 Current Release: 2741 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total 2742 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total 2743 2744 27452) iASL Compiler/Disassembler and Tools: 2746 2747Modified the parser to allow the names IO, DMA, and IRQ to be used as 2748namespace identifiers with no collision with existing resource descriptor 2749macro names. This provides compatibility with other ASL compilers and is 2750most useful for disassembly/recompilation of existing tables without parse 2751errors. (With assistance from Thomas Renninger) 2752 2753Disassembler: fixed an incorrect disassembly problem with the 2754DataTableRegion and CopyObject operators. Fixed a possible fault during 2755disassembly of some Alias operators. 2756 2757---------------------------------------- 275812 May 2006. Summary of changes for version 20060512: 2759 27601) ACPI CA Core Subsystem: 2761 2762Replaced the AcpiOsQueueForExecution interface with a new interface named 2763AcpiOsExecute. The major difference is that the new interface does not have 2764a Priority parameter, this appeared to be useless and has been replaced by a 2765Type parameter. The Type tells the host what type of execution is being 2766requested, such as global lock handler, notify handler, GPE handler, etc. 2767This allows the host to queue and execute the request as appropriate for the 2768request type, possibly using different work queues and different priorities 2769for the various request types. This enables fixes for multithreading 2770deadlock problems such as BZ #5534, and will require changes to all existing 2771OS interface layers. (Alexey Starikovskiy and Bob Moore) 2772 2773Fixed a possible memory leak associated with the support for the so-called 2774"implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor 2775Suietov) 2776 2777Fixed a problem with the Load() operator where a table load from an 2778operation region could overwrite an internal table buffer by up to 7 bytes 2779and cause alignment faults on IPF systems. (With assistance from Luming Yu) 2780 2781Example Code and Data Size: These are the sizes for the OS-independent 2782acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2783debug version of the code includes the debug output trace mechanism and has 2784a much larger code and data size. 2785 2786 Previous Release: 2787 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 2788 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 2789 Current Release: 2790 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total 2791 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total 2792 2793 2794 27952) iASL Compiler/Disassembler and Tools: 2796 2797Disassembler: Implemented support to cross reference the internal namespace 2798and automatically generate ASL External() statements for symbols not defined 2799within the current table being disassembled. This will simplify the 2800disassembly and recompilation of interdependent tables such as SSDTs since 2801these statements will no longer have to be added manually. 2802 2803Disassembler: Implemented experimental support to automatically detect 2804invocations of external control methods and generate appropriate External() 2805statements. This is problematic because the AML cannot be correctly parsed 2806until the number of arguments for each control method is known. Currently, 2807standalone method invocations and invocations as the source operand of a 2808Store() statement are supported. 2809 2810Disassembler: Implemented support for the ASL pseudo-operators LNotEqual, 2811LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()), 2812LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code 2813more readable and likely closer to the original ASL source. 2814 2815---------------------------------------- 281621 April 2006. Summary of changes for version 20060421: 2817 28181) ACPI CA Core Subsystem: 2819 2820Removed a device initialization optimization introduced in 20051216 where 2821the _STA method was not run unless an _INI was also present for the same 2822device. This optimization could cause problems because it could allow _INI 2823methods to be run within a not-present device subtree. (If a not-present 2824device had no _INI, _STA would not be run, the not-present status would not 2825be discovered, and the children of the device would be incorrectly 2826traversed.) 2827 2828Implemented a new _STA optimization where namespace subtrees that do not 2829contain _INI are identified and ignored during device initialization. 2830Selectively running _STA can significantly improve boot time on large 2831machines (with assistance from Len Brown.) 2832 2833Implemented support for the device initialization case where the returned 2834_STA flags indicate a device not-present but functioning. In this case, _INI 2835is not run, but the device children are examined for presence, as per the 2836ACPI specification. 2837 2838Implemented an additional change to the IndexField support in order to 2839conform to MS behavior. The value written to the Index Register is not 2840simply a byte offset, it is a byte offset in units of the access width of 2841the parent Index Field. (Fiodor Suietov) 2842 2843Defined and deployed a new OSL interface, AcpiOsValidateAddress. This 2844interface is called during the creation of all AML operation regions, and 2845allows the host OS to exert control over what addresses it will allow the 2846AML code to access. Operation Regions whose addresses are disallowed will 2847cause a runtime exception when they are actually accessed (will not affect 2848or abort table loading.) See oswinxf or osunixxf for an example 2849implementation. 2850 2851Defined and deployed a new OSL interface, AcpiOsValidateInterface. This 2852interface allows the host OS to match the various "optional" 2853interface/behavior strings for the _OSI predefined control method as 2854appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf 2855for an example implementation. 2856 2857Restructured and corrected various problems in the exception handling code 2858paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod 2859(with assistance from Takayoshi Kochi.) 2860 2861Modified the Linux source converter to ignore quoted string literals while 2862converting identifiers from mixed to lower case. This will correct problems 2863with the disassembler and other areas where such strings must not be 2864modified. 2865 2866The ACPI_FUNCTION_* macros no longer require quotes around the function 2867name. This allows the Linux source converter to convert the names, now that 2868the converter ignores quoted strings. 2869 2870Example Code and Data Size: These are the sizes for the OS-independent 2871acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2872debug version of the code includes the debug output trace mechanism and has 2873a much larger code and data size. 2874 2875 Previous Release: 2876 2877 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 2878 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 2879 Current Release: 2880 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total 2881 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total 2882 2883 28842) iASL Compiler/Disassembler and Tools: 2885 2886Implemented 3 new warnings for iASL, and implemented multiple warning levels 2887(w2 flag). 2888 28891) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is not 2890WAIT_FOREVER (0xFFFF) and the code does not examine the return value to 2891check for the possible timeout, a warning is issued. 2892 28932) Useless operators: If an ASL operator does not specify an optional target 2894operand and it also does not use the function return value from the 2895operator, a warning is issued since the operator effectively does nothing. 2896 28973) Unreferenced objects: If a namespace object is created, but never 2898referenced, a warning is issued. This is a warning level 2 since there are 2899cases where this is ok, such as when a secondary table is loaded that uses 2900the unreferenced objects. Even so, care is taken to only flag objects that 2901don't look like they will ever be used. For example, the reserved methods 2902(starting with an underscore) are usually not referenced because it is 2903expected that the OS will invoke them. 2904 2905---------------------------------------- 290631 March 2006. Summary of changes for version 20060331: 2907 29081) ACPI CA Core Subsystem: 2909 2910Implemented header file support for the following additional ACPI tables: 2911ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this support, 2912all current and known ACPI tables are now defined in the ACPICA headers and 2913are available for use by device drivers and other software. 2914 2915Implemented support to allow tables that contain ACPI names with invalid 2916characters to be loaded. Previously, this would cause the table load to 2917fail, but since there are several known cases of such tables on existing 2918machines, this change was made to enable ACPI support for them. Also, this 2919matches the behavior of the Microsoft ACPI implementation. 2920 2921Fixed a couple regressions introduced during the memory optimization in the 292220060317 release. The namespace node definition required additional 2923reorganization and an internal datatype that had been changed to 8-bit was 2924restored to 32-bit. (Valery Podrezov) 2925 2926Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState 2927could be passed through to AcpiOsReleaseObject which is unexpected. Such 2928null pointers are now trapped and ignored, matching the behavior of the 2929previous implementation before the deployment of AcpiOsReleaseObject. 2930(Valery Podrezov, Fiodor Suietov) 2931 2932Fixed a memory mapping leak during the deletion of a SystemMemory operation 2933region where a cached memory mapping was not deleted. This became a 2934noticeable problem for operation regions that are defined within frequently 2935used control methods. (Dana Meyers) 2936 2937Reorganized the ACPI table header files into two main files: one for the 2938ACPI tables consumed by the ACPICA core, and another for the miscellaneous 2939ACPI tables that are consumed by the drivers and other software. The various 2940FADT definitions were merged into one common section and three different 2941tables (ACPI 1.0, 1.0+, and 2.0) 2942 2943Example Code and Data Size: These are the sizes for the OS-independent 2944acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The 2945debug version of the code includes the debug output trace mechanism and has 2946a much larger code and data size. 2947 2948 Previous Release: 2949 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 2950 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 2951 Current Release: 2952 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total 2953 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total 2954 2955 29562) iASL Compiler/Disassembler and Tools: 2957 2958Disassembler: Implemented support to decode and format all non-AML ACPI 2959tables (tables other than DSDTs and SSDTs.) This includes the new tables 2960added to the ACPICA headers, therefore all current and known ACPI tables are 2961supported. 2962 2963Disassembler: The change to allow ACPI names with invalid characters also 2964enables the disassembly of such tables. Invalid characters within names are 2965changed to '*' to make the name printable; the iASL compiler will still 2966generate an error for such names, however, since this is an invalid ACPI 2967character. 2968 2969Implemented an option for AcpiXtract (-a) to extract all tables found in the 2970input file. The default invocation extracts only the DSDTs and SSDTs. 2971 2972Fixed a couple of gcc generation issues for iASL and AcpiExec and added a 2973makefile for the AcpiXtract utility. 2974 2975---------------------------------------- 297617 March 2006. Summary of changes for version 20060317: 2977 29781) ACPI CA Core Subsystem: 2979 2980Implemented the use of a cache object for all internal namespace nodes. 2981Since there are about 1000 static nodes in a typical system, this will 2982decrease memory use for cache implementations that minimize per-allocation 2983overhead (such as a slab allocator.) 2984 2985Removed the reference count mechanism for internal namespace nodes, since it 2986was deemed unnecessary. This reduces the size of each namespace node by 2987about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit case, 2988and 32 bytes for the 64-bit case. 2989 2990Optimized several internal data structures to reduce object size on 64-bit 2991platforms by packing data within the 64-bit alignment. This includes the 2992frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static 2993instances corresponding to the namespace objects. 2994 2995Added two new strings for the predefined _OSI method: "Windows 2001.1 SP1" 2996and "Windows 2006". 2997 2998Split the allocation tracking mechanism out to a separate file, from 2999utalloc.c to uttrack.c. This mechanism appears to be only useful for 3000application-level code. Kernels may wish to not include uttrack.c in 3001distributions. 3002 3003Removed all remnants of the obsolete ACPI_REPORT_* macros and the associated 3004code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING 3005macros.) 3006 3007Code and Data Size: These are the sizes for the acpica.lib produced by the 3008Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 3009driver or OSPM code. The debug version of the code includes the debug output 3010trace mechanism and has a much larger code and data size. Note that these 3011values will vary depending on the efficiency of the compiler and the 3012compiler options used during generation. 3013 3014 Previous Release: 3015 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 3016 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 3017 Current Release: 3018 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total 3019 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total 3020 3021 30222) iASL Compiler/Disassembler and Tools: 3023 3024Implemented an ANSI C version of the acpixtract utility. This version will 3025automatically extract the DSDT and all SSDTs from the input acpidump text 3026file and dump the binary output to separate files. It can also display a 3027summary of the input file including the headers for each table found and 3028will extract any single ACPI table, with any signature. (See 3029source/tools/acpixtract) 3030 3031---------------------------------------- 303210 March 2006. Summary of changes for version 20060310: 3033 30341) ACPI CA Core Subsystem: 3035 3036Tagged all external interfaces to the subsystem with the new 3037ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to assist 3038kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL 3039macro. The default definition is NULL. 3040 3041Added the ACPI_THREAD_ID type for the return value from AcpiOsGetThreadId. 3042This allows the host to define this as necessary to simplify kernel 3043integration. The default definition is ACPI_NATIVE_UINT. 3044 3045Fixed two interpreter problems related to error processing, the deletion of 3046objects, and placing invalid pointers onto the internal operator result 3047stack. BZ 6028, 6151 (Valery Podrezov) 3048 3049Increased the reference count threshold where a warning is emitted for large 3050reference counts in order to eliminate unnecessary warnings on systems with 3051large namespaces (especially 64-bit.) Increased the value from 0x400 to 30520x800. 3053 3054Due to universal disagreement as to the meaning of the 'c' in the calloc() 3055function, the ACPI_MEM_CALLOCATE macro has been renamed to 3056ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'. 3057ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and 3058ACPI_FREE. 3059 3060Code and Data Size: These are the sizes for the acpica.lib produced by the 3061Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 3062driver or OSPM code. The debug version of the code includes the debug output 3063trace mechanism and has a much larger code and data size. Note that these 3064values will vary depending on the efficiency of the compiler and the 3065compiler options used during generation. 3066 3067 Previous Release: 3068 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 3069 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 3070 Current Release: 3071 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 3072 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total 3073 3074 30752) iASL Compiler/Disassembler: 3076 3077Disassembler: implemented support for symbolic resource descriptor 3078references. If a CreateXxxxField operator references a fixed offset within a 3079resource descriptor, a name is assigned to the descriptor and the offset is 3080translated to the appropriate resource tag and pathname. The addition of 3081this support brings the disassembled code very close to the original ASL 3082source code and helps eliminate run-time errors when the disassembled code 3083is modified (and recompiled) in such a way as to invalidate the original 3084fixed offsets. 3085 3086Implemented support for a Descriptor Name as the last parameter to the ASL 3087Register() macro. This parameter was inadvertently left out of the ACPI 3088specification, and will be added for ACPI 3.0b. 3089 3090Fixed a problem where the use of the "_OSI" string (versus the full path 3091"\_OSI") caused an internal compiler error. ("No back ptr to op") 3092 3093Fixed a problem with the error message that occurs when an invalid string is 3094used for a _HID object (such as one with an embedded asterisk: "*PNP010A".) 3095The correct message is now displayed. 3096 3097---------------------------------------- 309817 February 2006. Summary of changes for version 20060217: 3099 31001) ACPI CA Core Subsystem: 3101 3102Implemented a change to the IndexField support to match the behavior of the 3103Microsoft AML interpreter. The value written to the Index register is now a 3104byte offset, no longer an index based upon the width of the Data register. 3105This should fix IndexField problems seen on some machines where the Data 3106register is not exactly one byte wide. The ACPI specification will be 3107clarified on this point. 3108 3109Fixed a problem where several resource descriptor types could overrun the 3110internal descriptor buffer due to size miscalculation: VendorShort, 3111VendorLong, and Interrupt. This was noticed on IA64 machines, but could 3112affect all platforms. 3113 3114Fixed a problem where individual resource descriptors were misaligned within 3115the internal buffer, causing alignment faults on IA64 platforms. 3116 3117Code and Data Size: These are the sizes for the acpica.lib produced by the 3118Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI 3119driver or OSPM code. The debug version of the code includes the debug output 3120trace mechanism and has a much larger code and data size. Note that these 3121values will vary depending on the efficiency of the compiler and the 3122compiler options used during generation. 3123 3124 Previous Release: 3125 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 3126 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 3127 Current Release: 3128 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total 3129 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total 3130 3131 31322) iASL Compiler/Disassembler: 3133 3134Implemented support for new reserved names: _WDG and _WED are Microsoft 3135extensions for Windows Instrumentation Management, _TDL is a new ACPI- 3136defined method (Throttling Depth Limit.) 3137 3138Fixed a problem where a zero-length VendorShort or VendorLong resource 3139descriptor was incorrectly emitted as a descriptor of length one. 3140 3141---------------------------------------- 314210 February 2006. Summary of changes for version 20060210: 3143 31441) ACPI CA Core Subsystem: 3145 3146Removed a couple of extraneous ACPI_ERROR messages that appeared during 3147normal execution. These became apparent after the conversion from 3148ACPI_DEBUG_PRINT. 3149 3150Fixed a problem where the CreateField operator could hang if the BitIndex or 3151NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359) 3152 3153Fixed a problem where a DeRefOf operation on a buffer object incorrectly 3154failed with an exception. This also fixes a couple of related RefOf and 3155DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387) 3156 3157Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead of 3158AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, BZ 31595480) 3160 3161Implemented a memory cleanup at the end of the execution of each iteration 3162of an AML While() loop, preventing the accumulation of outstanding objects. 3163(Valery Podrezov, BZ 5427) 3164 3165Eliminated a chunk of duplicate code in the object resolution code. (Valery 3166Podrezov, BZ 5336) 3167 3168Fixed several warnings during the 64-bit code generation. 3169 3170The AcpiSrc source code conversion tool now inserts one line of whitespace 3171after an if() statement that is followed immediately by a comment, improving 3172readability of the Linux code. 3173 3174Code and Data Size: The current and previous library sizes for the core 3175subsystem are shown below. These are the code and data sizes for the 3176acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3177values do not include any ACPI driver or OSPM code. The debug version of the 3178code includes the debug output trace mechanism and has a much larger code 3179and data size. Note that these values will vary depending on the efficiency 3180of the compiler and the compiler options used during generation. 3181 3182 Previous Release: 3183 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 3184 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 3185 Current Release: 3186 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total 3187 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total 3188 3189 31902) iASL Compiler/Disassembler: 3191 3192Fixed a problem with the disassembly of a BankField operator with a complex 3193expression for the BankValue parameter. 3194 3195---------------------------------------- 319627 January 2006. Summary of changes for version 20060127: 3197 31981) ACPI CA Core Subsystem: 3199 3200Implemented support in the Resource Manager to allow unresolved namestring 3201references within resource package objects for the _PRT method. This support 3202is in addition to the previously implemented unresolved reference support 3203within the AML parser. If the interpreter slack mode is enabled, these 3204unresolved references will be passed through to the caller as a NULL package 3205entry. 3206 3207Implemented and deployed new macros and functions for error and warning 3208messages across the subsystem. These macros are simpler and generate less 3209code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION, 3210ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older 3211macros remain defined to allow ACPI drivers time to migrate to the new 3212macros. 3213 3214Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of the 3215Acquire/Release Lock OSL interfaces. 3216 3217Fixed a problem where Alias ASL operators are sometimes not correctly 3218resolved, in both the interpreter and the iASL compiler. 3219 3220Fixed several problems with the implementation of the ConcatenateResTemplate 3221ASL operator. As per the ACPI specification, zero length buffers are now 3222treated as a single EndTag. One-length buffers always cause a fatal 3223exception. Non-zero length buffers that do not end with a full 2-byte EndTag 3224cause a fatal exception. 3225 3226Fixed a possible structure overwrite in the AcpiGetObjectInfo external 3227interface. (With assistance from Thomas Renninger) 3228 3229Code and Data Size: The current and previous library sizes for the core 3230subsystem are shown below. These are the code and data sizes for the 3231acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3232values do not include any ACPI driver or OSPM code. The debug version of the 3233code includes the debug output trace mechanism and has a much larger code 3234and data size. Note that these values will vary depending on the efficiency 3235of the compiler and the compiler options used during generation. 3236 3237 Previous Release: 3238 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 3239 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 3240 Current Release: 3241 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total 3242 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total 3243 3244 32452) iASL Compiler/Disassembler: 3246 3247Fixed an internal error that was generated for any forward references to ASL 3248Alias objects. 3249 3250---------------------------------------- 325113 January 2006. Summary of changes for version 20060113: 3252 32531) ACPI CA Core Subsystem: 3254 3255Added 2006 copyright to all module headers and signons. This affects 3256virtually every file in the ACPICA core subsystem, iASL compiler, and the 3257utilities. 3258 3259Enhanced the ACPICA error reporting in order to simplify user migration to 3260the non-debug version of ACPICA. Replaced all instances of the 3261ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN debug 3262levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros, 3263respectively. This preserves all error and warning messages in the non-debug 3264version of the ACPICA code (this has been referred to as the "debug lite" 3265option.) Over 200 cases were converted to create a total of over 380 3266error/warning messages across the ACPICA code. This increases the code and 3267data size of the default non-debug version of the code somewhat (about 13K), 3268but all error/warning reporting may be disabled if desired (and code 3269eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time 3270configuration option. The size of the debug version of ACPICA remains about 3271the same. 3272 3273Fixed a memory leak within the AML Debugger "Set" command. One object was 3274not properly deleted for every successful invocation of the command. 3275 3276Code and Data Size: The current and previous library sizes for the core 3277subsystem are shown below. These are the code and data sizes for the 3278acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3279values do not include any ACPI driver or OSPM code. The debug version of the 3280code includes the debug output trace mechanism and has a much larger code 3281and data size. Note that these values will vary depending on the efficiency 3282of the compiler and the compiler options used during generation. 3283 3284 Previous Release: 3285 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 3286 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 3287 Current Release: 3288 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total 3289 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total 3290 3291 32922) iASL Compiler/Disassembler: 3293 3294The compiler now officially supports the ACPI 3.0a specification that was 3295released on December 30, 2005. (Specification is available at www.acpi.info) 3296 3297---------------------------------------- 329816 December 2005. Summary of changes for version 20051216: 3299 33001) ACPI CA Core Subsystem: 3301 3302Implemented optional support to allow unresolved names within ASL Package 3303objects. A null object is inserted in the package when a named reference 3304cannot be located in the current namespace. Enabled via the interpreter 3305slack flag, this should eliminate AE_NOT_FOUND exceptions seen on machines 3306that contain such code. 3307 3308Implemented an optimization to the initialization sequence that can improve 3309boot time. During ACPI device initialization, the _STA method is now run if 3310and only if the _INI method exists. The _STA method is used to determine if 3311the device is present; An _INI can only be run if _STA returns present, but 3312it is a waste of time to run the _STA method if the _INI does not exist. 3313(Prototype and assistance from Dong Wei) 3314 3315Implemented use of the C99 uintptr_t for the pointer casting macros if it is 3316available in the current compiler. Otherwise, the default (void *) cast is 3317used as before. 3318 3319Fixed some possible memory leaks found within the execution path of the 3320Break, Continue, If, and CreateField operators. (Valery Podrezov) 3321 3322Fixed a problem introduced in the 20051202 release where an exception is 3323generated during method execution if a control method attempts to declare 3324another method. 3325 3326Moved resource descriptor string constants that are used by both the AML 3327disassembler and AML debugger to the common utilities directory so that 3328these components are independent. 3329 3330Implemented support in the AcpiExec utility (-e switch) to globally ignore 3331exceptions during control method execution (method is not aborted.) 3332 3333Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix 3334generation. 3335 3336Code and Data Size: The current and previous library sizes for the core 3337subsystem are shown below. These are the code and data sizes for the 3338acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3339values do not include any ACPI driver or OSPM code. The debug version of the 3340code includes the debug output trace mechanism and has a much larger code 3341and data size. Note that these values will vary depending on the efficiency 3342of the compiler and the compiler options used during generation. 3343 3344 Previous Release: 3345 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 3346 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 3347 Current Release: 3348 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total 3349 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total 3350 3351 33522) iASL Compiler/Disassembler: 3353 3354Fixed a problem where a CPU stack overflow fault could occur if a recursive 3355method call was made from within a Return statement. 3356 3357---------------------------------------- 335802 December 2005. Summary of changes for version 20051202: 3359 33601) ACPI CA Core Subsystem: 3361 3362Modified the parsing of control methods to no longer create namespace 3363objects during the first pass of the parse. Objects are now created only 3364during the execute phase, at the moment the namespace creation operator is 3365encountered in the AML (Name, OperationRegion, CreateByteField, etc.) This 3366should eliminate ALREADY_EXISTS exceptions seen on some machines where 3367reentrant control methods are protected by an AML mutex. The mutex will now 3368correctly block multiple threads from attempting to create the same object 3369more than once. 3370 3371Increased the number of available Owner Ids for namespace object tracking 3372from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen on 3373some machines with a large number of ACPI tables (either static or dynamic). 3374 3375Fixed a problem with the AcpiExec utility where a fault could occur when the 3376-b switch (batch mode) is used. 3377 3378Enhanced the namespace dump routine to output the owner ID for each 3379namespace object. 3380 3381Code and Data Size: The current and previous library sizes for the core 3382subsystem are shown below. These are the code and data sizes for the 3383acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3384values do not include any ACPI driver or OSPM code. The debug version of the 3385code includes the debug output trace mechanism and has a much larger code 3386and data size. Note that these values will vary depending on the efficiency 3387of the compiler and the compiler options used during generation. 3388 3389 Previous Release: 3390 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 3391 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 3392 Current Release: 3393 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 3394 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total 3395 3396 33972) iASL Compiler/Disassembler: 3398 3399Fixed a parse error during compilation of certain Switch/Case constructs. To 3400simplify the parse, the grammar now allows for multiple Default statements 3401and this error is now detected and flagged during the analysis phase. 3402 3403Disassembler: The disassembly now includes the contents of the original 3404table header within a comment at the start of the file. This includes the 3405name and version of the original ASL compiler. 3406 3407---------------------------------------- 340817 November 2005. Summary of changes for version 20051117: 3409 34101) ACPI CA Core Subsystem: 3411 3412Fixed a problem in the AML parser where the method thread count could be 3413decremented below zero if any errors occurred during the method parse phase. 3414This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some machines. 3415This also fixed a related regression with the mechanism that detects and 3416corrects methods that cannot properly handle reentrancy (related to the 3417deployment of the new OwnerId mechanism.) 3418 3419Eliminated the pre-parsing of control methods (to detect errors) during 3420table load. Related to the problem above, this was causing unwind issues if 3421any errors occurred during the parse, and it seemed to be overkill. A table 3422load should not be aborted if there are problems with any single control 3423method, thus rendering this feature rather pointless. 3424 3425Fixed a problem with the new table-driven resource manager where an internal 3426buffer overflow could occur for small resource templates. 3427 3428Implemented a new external interface, AcpiGetVendorResource. This interface 3429will find and return a vendor-defined resource descriptor within a _CRS or 3430_PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn Helgaas. 3431 3432Removed the length limit (200) on string objects as per the upcoming ACPI 34333.0A specification. This affects the following areas of the interpreter: 1) 3434any implicit conversion of a Buffer to a String, 2) a String object result 3435of the ASL Concatentate operator, 3) the String object result of the ASL 3436ToString operator. 3437 3438Fixed a problem in the Windows OS interface layer (OSL) where a WAIT_FOREVER 3439on a semaphore object would incorrectly timeout. This allows the 3440multithreading features of the AcpiExec utility to work properly under 3441Windows. 3442 3443Updated the Linux makefiles for the iASL compiler and AcpiExec to include 3444the recently added file named "utresrc.c". 3445 3446Code and Data Size: The current and previous library sizes for the core 3447subsystem are shown below. These are the code and data sizes for the 3448acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3449values do not include any ACPI driver or OSPM code. The debug version of the 3450code includes the debug output trace mechanism and has a much larger code 3451and data size. Note that these values will vary depending on the efficiency 3452of the compiler and the compiler options used during generation. 3453 3454 Previous Release: 3455 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 3456 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 3457 Current Release: 3458 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total 3459 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 3460 3461 34622) iASL Compiler/Disassembler: 3463 3464Removed the limit (200) on string objects as per the upcoming ACPI 3.0A 3465specification. For the iASL compiler, this means that string literals within 3466the source ASL can be of any length. 3467 3468Enhanced the listing output to dump the AML code for resource descriptors 3469immediately after the ASL code for each descriptor, instead of in a block at 3470the end of the entire resource template. 3471 3472Enhanced the compiler debug output to dump the entire original parse tree 3473constructed during the parse phase, before any transforms are applied to the 3474tree. The transformed tree is dumped also. 3475 3476---------------------------------------- 347702 November 2005. Summary of changes for version 20051102: 3478 34791) ACPI CA Core Subsystem: 3480 3481Modified the subsystem initialization sequence to improve GPE support. The 3482GPE initialization has been split into two parts in order to defer execution 3483of the _PRW methods (Power Resources for Wake) until after the hardware is 3484fully initialized and the SCI handler is installed. This allows the _PRW 3485methods to access fields protected by the Global Lock. This will fix systems 3486where a NO_GLOBAL_LOCK exception has been seen during initialization. 3487 3488Converted the ACPI internal object disassemble and display code within the 3489AML debugger to fully table-driven operation, reducing code size and 3490increasing maintainability. 3491 3492Fixed a regression with the ConcatenateResTemplate() ASL operator introduced 3493in the 20051021 release. 3494 3495Implemented support for "local" internal ACPI object types within the 3496debugger "Object" command and the AcpiWalkNamespace external interfaces. 3497These local types include RegionFields, BankFields, IndexFields, Alias, and 3498reference objects. 3499 3500Moved common AML resource handling code into a new file, "utresrc.c". This 3501code is shared by both the Resource Manager and the AML Debugger. 3502 3503Code and Data Size: The current and previous library sizes for the core 3504subsystem are shown below. These are the code and data sizes for the 3505acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3506values do not include any ACPI driver or OSPM code. The debug version of the 3507code includes the debug output trace mechanism and has a much larger code 3508and data size. Note that these values will vary depending on the efficiency 3509of the compiler and the compiler options used during generation. 3510 3511 Previous Release: 3512 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 3513 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 3514 Current Release: 3515 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total 3516 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total 3517 3518 35192) iASL Compiler/Disassembler: 3520 3521Fixed a problem with very large initializer lists (more than 4000 elements) 3522for both Buffer and Package objects where the parse stack could overflow. 3523 3524Enhanced the pre-compile source code scan for non-ASCII characters to ignore 3525characters within comment fields. The scan is now always performed and is no 3526longer optional, detecting invalid characters within a source file 3527immediately rather than during the parse phase or later. 3528 3529Enhanced the ASL grammar definition to force early reductions on all list- 3530style grammar elements so that the overall parse stack usage is greatly 3531reduced. This should improve performance and reduce the possibility of parse 3532stack overflow. 3533 3534Eliminated all reduce/reduce conflicts in the iASL parser generation. Also, 3535with the addition of a %expected statement, the compiler generates from 3536source with no warnings. 3537 3538Fixed a possible segment fault in the disassembler if the input filename 3539does not contain a "dot" extension (Thomas Renninger). 3540 3541---------------------------------------- 354221 October 2005. Summary of changes for version 20051021: 3543 35441) ACPI CA Core Subsystem: 3545 3546Implemented support for the EM64T and other x86-64 processors. This 3547essentially entails recognizing that these processors support non-aligned 3548memory transfers. Previously, all 64-bit processors were assumed to lack 3549hardware support for non-aligned transfers. 3550 3551Completed conversion of the Resource Manager to nearly full table-driven 3552operation. Specifically, the resource conversion code (convert AML to 3553internal format and the reverse) and the debug code to dump internal 3554resource descriptors are fully table-driven, reducing code and data size and 3555improving maintainability. 3556 3557The OSL interfaces for Acquire and Release Lock now use a 64-bit flag word 3558on 64-bit processors instead of a fixed 32-bit word. (With assistance from 3559Alexey Starikovskiy) 3560 3561Implemented support within the resource conversion code for the Type- 3562Specific byte within the various ACPI 3.0 *WordSpace macros. 3563 3564Fixed some issues within the resource conversion code for the type-specific 3565flags for both Memory and I/O address resource descriptors. For Memory, 3566implemented support for the MTP and TTP flags. For I/O, split the TRS and 3567TTP flags into two separate fields. 3568 3569Code and Data Size: The current and previous library sizes for the core 3570subsystem are shown below. These are the code and data sizes for the 3571acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3572values do not include any ACPI driver or OSPM code. The debug version of the 3573code includes the debug output trace mechanism and has a much larger code 3574and data size. Note that these values will vary depending on the efficiency 3575of the compiler and the compiler options used during generation. 3576 3577 Previous Release: 3578 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 3579 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 3580 Current Release: 3581 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total 3582 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total 3583 3584 3585 35862) iASL Compiler/Disassembler: 3587 3588Relaxed a compiler restriction that disallowed a ResourceIndex byte if the 3589corresponding ResourceSource string was not also present in a resource 3590descriptor declaration. This restriction caused problems with existing 3591AML/ASL code that includes the Index byte without the string. When such AML 3592was disassembled, it could not be compiled without modification. Further, 3593the modified code created a resource template with a different size than the 3594original, breaking code that used fixed offsets into the resource template 3595buffer. 3596 3597Removed a recent feature of the disassembler to ignore a lone ResourceIndex 3598byte. This byte is now emitted if present so that the exact AML can be 3599reproduced when the disassembled code is recompiled. 3600 3601Improved comments and text alignment for the resource descriptor code 3602emitted by the disassembler. 3603 3604Implemented disassembler support for the ACPI 3.0 AccessSize field within a 3605Register() resource descriptor. 3606 3607---------------------------------------- 360830 September 2005. Summary of changes for version 20050930: 3609 36101) ACPI CA Core Subsystem: 3611 3612Completed a major overhaul of the Resource Manager code - specifically, 3613optimizations in the area of the AML/internal resource conversion code. The 3614code has been optimized to simplify and eliminate duplicated code, CPU stack 3615use has been decreased by optimizing function parameters and local 3616variables, and naming conventions across the manager have been standardized 3617for clarity and ease of maintenance (this includes function, parameter, 3618variable, and struct/typedef names.) The update may force changes in some 3619driver code, depending on how resources are handled by the host OS. 3620 3621All Resource Manager dispatch and information tables have been moved to a 3622single location for clarity and ease of maintenance. One new file was 3623created, named "rsinfo.c". 3624 3625The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to 3626guarantee that the argument is not evaluated twice, making them less prone 3627to macro side-effects. However, since there exists the possibility of 3628additional stack use if a particular compiler cannot optimize them (such as 3629in the debug generation case), the original macros are optionally available. 3630Note that some invocations of the return_VALUE macro may now cause size 3631mismatch warnings; the return_UINT8 and return_UINT32 macros are provided to 3632eliminate these. (From Randy Dunlap) 3633 3634Implemented a new mechanism to enable debug tracing for individual control 3635methods. A new external interface, AcpiDebugTrace, is provided to enable 3636this mechanism. The intent is to allow the host OS to easily enable and 3637disable tracing for problematic control methods. This interface can be 3638easily exposed to a user or debugger interface if desired. See the file 3639psxface.c for details. 3640 3641AcpiUtCallocate will now return a valid pointer if a length of zero is 3642specified - a length of one is used and a warning is issued. This matches 3643the behavior of AcpiUtAllocate. 3644 3645Code and Data Size: The current and previous library sizes for the core 3646subsystem are shown below. These are the code and data sizes for the 3647acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3648values do not include any ACPI driver or OSPM code. The debug version of the 3649code includes the debug output trace mechanism and has a much larger code 3650and data size. Note that these values will vary depending on the efficiency 3651of the compiler and the compiler options used during generation. 3652 3653 Previous Release: 3654 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 3655 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 3656 Current Release: 3657 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total 3658 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total 3659 3660 36612) iASL Compiler/Disassembler: 3662 3663A remark is issued if the effective compile-time length of a package or 3664buffer is zero. Previously, this was a warning. 3665 3666---------------------------------------- 366716 September 2005. Summary of changes for version 20050916: 3668 36691) ACPI CA Core Subsystem: 3670 3671Fixed a problem within the Resource Manager where support for the Generic 3672Register descriptor was not fully implemented. This descriptor is now fully 3673recognized, parsed, disassembled, and displayed. 3674 3675Completely restructured the Resource Manager code to utilize table-driven 3676dispatch and lookup, eliminating many of the large switch() statements. This 3677reduces overall subsystem code size and code complexity. Affects the 3678resource parsing and construction, disassembly, and debug dump output. 3679 3680Cleaned up and restructured the debug dump output for all resource 3681descriptors. Improved readability of the output and reduced code size. 3682 3683Fixed a problem where changes to internal data structures caused the 3684optional ACPI_MUTEX_DEBUG code to fail compilation if specified. 3685 3686Code and Data Size: The current and previous library sizes for the core 3687subsystem are shown below. These are the code and data sizes for the 3688acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These 3689values do not include any ACPI driver or OSPM code. The debug version of the 3690code includes the debug output trace mechanism and has a much larger code 3691and data size. Note that these values will vary depending on the efficiency 3692of the compiler and the compiler options used during generation. 3693 3694 Previous Release: 3695 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 3696 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 3697 Current Release: 3698 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total 3699 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total 3700 3701 37022) iASL Compiler/Disassembler: 3703 3704Updated the disassembler to automatically insert an EndDependentFn() macro 3705into the ASL stream if this macro is missing in the original AML code, 3706simplifying compilation of the resulting ASL module. 3707 3708Fixed a problem in the disassembler where a disassembled ResourceSource 3709string (within a large resource descriptor) was not surrounded by quotes and 3710not followed by a comma, causing errors when the resulting ASL module was 3711compiled. Also, escape sequences within a ResourceSource string are now 3712handled correctly (especially "\\") 3713 3714---------------------------------------- 371502 September 2005. Summary of changes for version 20050902: 3716 37171) ACPI CA Core Subsystem: 3718 3719Fixed a problem with the internal Owner ID allocation and deallocation 3720mechanisms for control method execution and recursive method invocation. 3721This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId" 3722messages seen on some systems. Recursive method invocation depth is 3723currently limited to 255. (Alexey Starikovskiy) 3724 3725Completely eliminated all vestiges of support for the "module-level 3726executable code" until this support is fully implemented and debugged. This 3727should eliminate the NO_RETURN_VALUE exceptions seen during table load on 3728some systems that invoke this support. 3729 3730Fixed a problem within the resource manager code where the transaction flags 3731for a 64-bit address descriptor were handled incorrectly in the type- 3732specific flag byte. 3733 3734Consolidated duplicate code within the address descriptor resource manager 3735code, reducing overall subsystem code size. 3736 3737Fixed a fault when using the AML debugger "disassemble" command to 3738disassemble individual control methods. 3739 3740Removed references to the "release_current" directory within the Unix 3741release package. 3742 3743Code and Data Size: The current and previous core subsystem library sizes 3744are shown below. These are the code and data sizes for the acpica.lib 3745produced by the Microsoft Visual C++ 6.0 compiler. These values do not 3746include any ACPI driver or OSPM code. The debug version of the code includes 3747the debug output trace mechanism and has a much larger code and data size. 3748Note that these values will vary depending on the efficiency of the compiler 3749and the compiler options used during generation. 3750 3751 Previous Release: 3752 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 3753 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 3754 Current Release: 3755 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total 3756 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total 3757 3758 37592) iASL Compiler/Disassembler: 3760 3761Implemented an error check for illegal duplicate values in the interrupt and 3762dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and 3763Interrupt(). 3764 3765Implemented error checking for the Irq() and IrqNoFlags() macros to detect 3766too many values in the interrupt list (16 max) and invalid values in the 3767list (range 0 - 15) 3768 3769The maximum length string literal within an ASL file is now restricted to 3770200 characters as per the ACPI specification. 3771 3772Fixed a fault when using the -ln option (generate namespace listing). 3773 3774Implemented an error check to determine if a DescriptorName within a 3775resource descriptor has already been used within the current scope. 3776 3777---------------------------------------- 377815 August 2005. Summary of changes for version 20050815: 3779 37801) ACPI CA Core Subsystem: 3781 3782Implemented a full bytewise compare to determine if a table load request is 3783attempting to load a duplicate table. The compare is performed if the table 3784signatures and table lengths match. This will allow different tables with 3785the same OEM Table ID and revision to be loaded - probably against the ACPI 3786specification, but discovered in the field nonetheless. 3787 3788Added the changes.txt logfile to each of the zipped release packages. 3789 3790Code and Data Size: Current and previous core subsystem library sizes are 3791shown below. These are the code and data sizes for the acpica.lib produced 3792by the Microsoft Visual C++ 6.0 compiler, and these values do not include 3793any ACPI driver or OSPM code. The debug version of the code includes the 3794debug output trace mechanism and has a much larger code and data size. Note 3795that these values will vary depending on the efficiency of the compiler and 3796the compiler options used during generation. 3797 3798 Previous Release: 3799 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 3800 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 3801 Current Release: 3802 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 3803 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total 3804 3805 38062) iASL Compiler/Disassembler: 3807 3808Fixed a problem where incorrect AML code could be generated for Package 3809objects if optimization is disabled (via the -oa switch). 3810 3811Fixed a problem with where incorrect AML code is generated for variable- 3812length packages when the package length is not specified and the number of 3813initializer values is greater than 255. 3814 3815 3816---------------------------------------- 381729 July 2005. Summary of changes for version 20050729: 3818 38191) ACPI CA Core Subsystem: 3820 3821Implemented support to ignore an attempt to install/load a particular ACPI 3822table more than once. Apparently there exists BIOS code that repeatedly 3823attempts to load the same SSDT upon certain events. With assistance from 3824Venkatesh Pallipadi. 3825 3826Restructured the main interface to the AML parser in order to correctly 3827handle all exceptional conditions. This will prevent leakage of the OwnerId 3828resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on some 3829machines. With assistance from Alexey Starikovskiy. 3830 3831Support for "module level code" has been disabled in this version due to a 3832number of issues that have appeared on various machines. The support can be 3833enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem 3834compilation. When the issues are fully resolved, the code will be enabled by 3835default again. 3836 3837Modified the internal functions for debug print support to define the 3838FunctionName parameter as a (const char *) for compatibility with compiler 3839built-in macros such as __FUNCTION__, etc. 3840 3841Linted the entire ACPICA source tree for both 32-bit and 64-bit. 3842 3843Implemented support to display an object count summary for the AML Debugger 3844commands Object and Methods. 3845 3846Code and Data Size: Current and previous core subsystem library sizes are 3847shown below. These are the code and data sizes for the acpica.lib produced 3848by the Microsoft Visual C++ 6.0 compiler, and these values do not include 3849any ACPI driver or OSPM code. The debug version of the code includes the 3850debug output trace mechanism and has a much larger code and data size. Note 3851that these values will vary depending on the efficiency of the compiler and 3852the compiler options used during generation. 3853 3854 Previous Release: 3855 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 3856 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 3857 Current Release: 3858 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total 3859 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total 3860 3861 38622) iASL Compiler/Disassembler: 3863 3864Fixed a regression that appeared in the 20050708 version of the compiler 3865where an error message was inadvertently emitted for invocations of the _OSI 3866reserved control method. 3867 3868---------------------------------------- 386908 July 2005. Summary of changes for version 20050708: 3870 38711) ACPI CA Core Subsystem: 3872 3873The use of the CPU stack in the debug version of the subsystem has been 3874considerably reduced. Previously, a debug structure was declared in every 3875function that used the debug macros. This structure has been removed in 3876favor of declaring the individual elements as parameters to the debug 3877functions. This reduces the cumulative stack use during nested execution of 3878ACPI function calls at the cost of a small increase in the code size of the 3879debug version of the subsystem. With assistance from Alexey Starikovskiy and 3880Len Brown. 3881 3882Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent 3883headers to define a macro that will return the current function name at 3884runtime (such as __FUNCTION__ or _func_, etc.) The function name is used by 3885the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the 3886compiler-dependent header, the function name is saved on the CPU stack (one 3887pointer per function.) This mechanism is used because apparently there 3888exists no standard ANSI-C defined macro that that returns the function name. 3889 3890Redesigned and reimplemented the "Owner ID" mechanism used to track 3891namespace objects created/deleted by ACPI tables and control method 3892execution. A bitmap is now used to allocate and free the IDs, thus solving 3893the wraparound problem present in the previous implementation. The size of 3894the namespace node descriptor was reduced by 2 bytes as a result (Alexey 3895Starikovskiy). 3896 3897Removed the UINT32_BIT and UINT16_BIT types that were used for the bitfield 3898flag definitions within the headers for the predefined ACPI tables. These 3899have been replaced by UINT8_BIT in order to increase the code portability of 3900the subsystem. If the use of UINT8 remains a problem, we may be forced to 3901eliminate bitfields entirely because of a lack of portability. 3902 3903Enhanced the performance of the AcpiUtUpdateObjectReference procedure. This 3904is a frequently used function and this improvement increases the performance 3905of the entire subsystem (Alexey Starikovskiy). 3906 3907Fixed several possible memory leaks and the inverse - premature object 3908deletion (Alexey Starikovskiy). 3909 3910Code and Data Size: Current and previous core subsystem library sizes are 3911shown below. These are the code and data sizes for the acpica.lib produced 3912by the Microsoft Visual C++ 6.0 compiler, and these values do not include 3913any ACPI driver or OSPM code. The debug version of the code includes the 3914debug output trace mechanism and has a much larger code and data size. Note 3915that these values will vary depending on the efficiency of the compiler and 3916the compiler options used during generation. 3917 3918 Previous Release: 3919 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 3920 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 3921 Current Release: 3922 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total 3923 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total 3924 3925---------------------------------------- 392624 June 2005. Summary of changes for version 20050624: 3927 39281) ACPI CA Core Subsystem: 3929 3930Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for 3931the host-defined cache object. This allows the OSL implementation to define 3932and type this object in any manner desired, simplifying the OSL 3933implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for 3934Linux, and should be defined in the OS-specific header file for other 3935operating systems as required. 3936 3937Changed the interface to AcpiOsAcquireObject to directly return the 3938requested object as the function return (instead of ACPI_STATUS.) This 3939change was made for performance reasons, since this is the purpose of the 3940interface in the first place. AcpiOsAcquireObject is now similar to the 3941AcpiOsAllocate interface. 3942 3943Implemented a new AML debugger command named Businfo. This command displays 3944information about all devices that have an associate _PRT object. The _ADR, 3945_HID, _UID, and _CID are displayed for these devices. 3946 3947Modified the initialization sequence in AcpiInitializeSubsystem to call the 3948OSL interface AcpiOslInitialize first, before any local initialization. This 3949change was required because the global initialization now calls OSL 3950interfaces. 3951 3952Enhanced the Dump command to display the entire contents of Package objects 3953(including all sub-objects and their values.) 3954 3955Restructured the code base to split some files because of size and/or 3956because the code logically belonged in a separate file. New files are listed 3957below. All makefiles and project files included in the ACPI CA release have 3958been updated. 3959 utilities/utcache.c /* Local cache interfaces */ 3960 utilities/utmutex.c /* Local mutex support */ 3961 utilities/utstate.c /* State object support */ 3962 interpreter/parser/psloop.c /* Main AML parse loop */ 3963 3964Code and Data Size: Current and previous core subsystem library sizes are 3965shown below. These are the code and data sizes for the acpica.lib produced 3966by the Microsoft Visual C++ 6.0 compiler, and these values do not include 3967any ACPI driver or OSPM code. The debug version of the code includes the 3968debug output trace mechanism and has a much larger code and data size. Note 3969that these values will vary depending on the efficiency of the compiler and 3970the compiler options used during generation. 3971 3972 Previous Release: 3973 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 3974 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 3975 Current Release: 3976 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total 3977 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total 3978 3979 39802) iASL Compiler/Disassembler: 3981 3982Fixed a regression introduced in version 20050513 where the use of a Package 3983object within a Case() statement caused a compile time exception. The 3984original behavior has been restored (a Match() operator is emitted.) 3985 3986---------------------------------------- 398717 June 2005. Summary of changes for version 20050617: 3988 39891) ACPI CA Core Subsystem: 3990 3991Moved the object cache operations into the OS interface layer (OSL) to allow 3992the host OS to handle these operations if desired (for example, the Linux 3993OSL will invoke the slab allocator). This support is optional; the compile 3994time define ACPI_USE_LOCAL_CACHE may be used to utilize the original cache 3995code in the ACPI CA core. The new OSL interfaces are shown below. See 3996utalloc.c for an example implementation, and acpiosxf.h for the exact 3997interface definitions. With assistance from Alexey Starikovskiy. 3998 AcpiOsCreateCache 3999 AcpiOsDeleteCache 4000 AcpiOsPurgeCache 4001 AcpiOsAcquireObject 4002 AcpiOsReleaseObject 4003 4004Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to return 4005and restore a flags parameter. This fits better with many OS lock models. 4006Note: the current execution state (interrupt handler or not) is no longer 4007passed to these interfaces. If necessary, the OSL must determine this state 4008by itself, a simple and fast operation. With assistance from Alexey 4009Starikovskiy. 4010 4011Fixed a problem in the ACPI table handling where a valid XSDT was assumed 4012present if the revision of the RSDP was 2 or greater. According to the ACPI 4013specification, the XSDT is optional in all cases, and the table manager 4014therefore now checks for both an RSDP >=2 and a valid XSDT pointer. 4015Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs contain 4016only the RSDT. 4017 4018Fixed an interpreter problem with the Mid() operator in the case of an input 4019string where the resulting output string is of zero length. It now correctly 4020returns a valid, null terminated string object instead of a string object 4021with a null pointer. 4022 4023Fixed a problem with the control method argument handling to allow a store 4024to an Arg object that already contains an object of type Device. The Device 4025object is now correctly overwritten. Previously, an error was returned. 4026 4027 4028Enhanced the debugger Find command to emit object values in addition to the 4029found object pathnames. The output format is the same as the dump namespace 4030command. 4031 4032Enhanced the debugger Set command. It now has the ability to set the value 4033of any Named integer object in the namespace (Previously, only method locals 4034and args could be set.) 4035 4036Code and Data Size: Current and previous core subsystem library sizes are 4037shown below. These are the code and data sizes for the acpica.lib produced 4038by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4039any ACPI driver or OSPM code. The debug version of the code includes the 4040debug output trace mechanism and has a much larger code and data size. Note 4041that these values will vary depending on the efficiency of the compiler and 4042the compiler options used during generation. 4043 4044 Previous Release: 4045 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 4046 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 4047 Current Release: 4048 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total 4049 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total 4050 4051 40522) iASL Compiler/Disassembler: 4053 4054Fixed a regression in the disassembler where if/else/while constructs were 4055output incorrectly. This problem was introduced in the previous release 4056(20050526). This problem also affected the single-step disassembly in the 4057debugger. 4058 4059Fixed a problem where compiling the reserved _OSI method would randomly (but 4060rarely) produce compile errors. 4061 4062Enhanced the disassembler to emit compilable code in the face of incorrect 4063AML resource descriptors. If the optional ResourceSourceIndex is present, 4064but the ResourceSource is not, do not emit the ResourceSourceIndex in the 4065disassembly. Otherwise, the resulting code cannot be compiled without 4066errors. 4067 4068---------------------------------------- 406926 May 2005. Summary of changes for version 20050526: 4070 40711) ACPI CA Core Subsystem: 4072 4073Implemented support to execute Type 1 and Type 2 AML opcodes appearing at 4074the module level (not within a control method.) These opcodes are executed 4075exactly once at the time the table is loaded. This type of code was legal up 4076until the release of ACPI 2.0B (2002) and is now supported within ACPI CA in 4077order to provide backwards compatibility with earlier BIOS implementations. 4078This eliminates the "Encountered executable code at module level" warning 4079that was previously generated upon detection of such code. 4080 4081Fixed a problem in the interpreter where an AE_NOT_FOUND exception could 4082inadvertently be generated during the lookup of namespace objects in the 4083second pass parse of ACPI tables and control methods. It appears that this 4084problem could occur during the resolution of forward references to namespace 4085objects. 4086 4087Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function, 4088corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This 4089allows the deadlock detection debug code to be compiled out in the normal 4090case, improving mutex performance (and overall subsystem performance) 4091considerably. 4092 4093Implemented a handful of miscellaneous fixes for possible memory leaks on 4094error conditions and error handling control paths. These fixes were 4095suggested by FreeBSD and the Coverity Prevent source code analysis tool. 4096 4097Added a check for a null RSDT pointer in AcpiGetFirmwareTable (tbxfroot.c) 4098to prevent a fault in this error case. 4099 4100Code and Data Size: Current and previous core subsystem library sizes are 4101shown below. These are the code and data sizes for the acpica.lib produced 4102by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4103any ACPI driver or OSPM code. The debug version of the code includes the 4104debug output trace mechanism and has a much larger code and data size. Note 4105that these values will vary depending on the efficiency of the compiler and 4106the compiler options used during generation. 4107 4108 Previous Release: 4109 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 4110 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 4111 Current Release: 4112 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total 4113 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total 4114 4115 41162) iASL Compiler/Disassembler: 4117 4118Implemented support to allow Type 1 and Type 2 ASL operators to appear at 4119the module level (not within a control method.) These operators will be 4120executed once at the time the table is loaded. This type of code was legal 4121up until the release of ACPI 2.0B (2002) and is now supported by the iASL 4122compiler in order to provide backwards compatibility with earlier BIOS ASL 4123code. 4124 4125The ACPI integer width (specified via the table revision ID or the -r 4126override, 32 or 64 bits) is now used internally during compile-time constant 4127folding to ensure that constants are truncated to 32 bits if necessary. 4128Previously, the revision ID value was only emitted in the AML table header. 4129 4130An error message is now generated for the Mutex and Method operators if the 4131SyncLevel parameter is outside the legal range of 0 through 15. 4132 4133Fixed a problem with the Method operator ParameterTypes list handling (ACPI 41343.0). Previously, more than 2 types or 2 arguments generated a syntax error. 4135The actual underlying implementation of method argument typechecking is 4136still under development, however. 4137 4138---------------------------------------- 413913 May 2005. Summary of changes for version 20050513: 4140 41411) ACPI CA Core Subsystem: 4142 4143Implemented support for PCI Express root bridges -- added support for device 4144PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup. 4145 4146The interpreter now automatically truncates incoming 64-bit constants to 32 4147bits if currently executing out of a 32-bit ACPI table (Revision < 2). This 4148also affects the iASL compiler constant folding. (Note: as per below, the 4149iASL compiler no longer allows 64-bit constants within 32-bit tables.) 4150 4151Fixed a problem where string and buffer objects with "static" pointers 4152(pointers to initialization data within an ACPI table) were not handled 4153consistently. The internal object copy operation now always copies the data 4154to a newly allocated buffer, regardless of whether the source object is 4155static or not. 4156 4157Fixed a problem with the FromBCD operator where an implicit result 4158conversion was improperly performed while storing the result to the target 4159operand. Since this is an "explicit conversion" operator, the implicit 4160conversion should never be performed on the output. 4161 4162Fixed a problem with the CopyObject operator where a copy to an existing 4163named object did not always completely overwrite the existing object stored 4164at name. Specifically, a buffer-to-buffer copy did not delete the existing 4165buffer. 4166 4167Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces and 4168structs for consistency. 4169 4170Code and Data Size: Current and previous core subsystem library sizes are 4171shown below. These are the code and data sizes for the acpica.lib produced 4172by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4173any ACPI driver or OSPM code. The debug version of the code includes the 4174debug output trace mechanism and has a much larger code and data size. Note 4175that these values will vary depending on the efficiency of the compiler and 4176the compiler options used during generation. 4177 4178 Previous Release: 4179 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 4180 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 4181 Current Release: (Same sizes) 4182 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 4183 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 4184 4185 41862) iASL Compiler/Disassembler: 4187 4188The compiler now emits a warning if an attempt is made to generate a 64-bit 4189integer constant from within a 32-bit ACPI table (Revision < 2). The integer 4190is truncated to 32 bits. 4191 4192Fixed a problem with large package objects: if the static length of the 4193package is greater than 255, the "variable length package" opcode is 4194emitted. Previously, this caused an error. This requires an update to the 4195ACPI spec, since it currently (incorrectly) states that packages larger than 4196255 elements are not allowed. 4197 4198The disassembler now correctly handles variable length packages and packages 4199larger than 255 elements. 4200 4201---------------------------------------- 420208 April 2005. Summary of changes for version 20050408: 4203 42041) ACPI CA Core Subsystem: 4205 4206Fixed three cases in the interpreter where an "index" argument to an ASL 4207function was still (internally) 32 bits instead of the required 64 bits. 4208This was the Index argument to the Index, Mid, and Match operators. 4209 4210The "strupr" function is now permanently local (AcpiUtStrupr), since this is 4211not a POSIX-defined function and not present in most kernel-level C 4212libraries. All references to the C library strupr function have been removed 4213from the headers. 4214 4215Completed the deployment of static functions/prototypes. All prototypes with 4216the static attribute have been moved from the headers to the owning C file. 4217 4218Implemented an extract option (-e) for the AcpiBin utility (AML binary 4219utility). This option allows the utility to extract individual ACPI tables 4220from the output of AcpiDmp. It provides the same functionality of the 4221acpixtract.pl perl script without the worry of setting the correct perl 4222options. AcpiBin runs on Windows and has not yet been generated/validated in 4223the Linux/Unix environment (but should be soon). 4224 4225Updated and fixed the table dump option for AcpiBin (-d). This option 4226converts a single ACPI table to a hex/ascii file, similar to the output of 4227AcpiDmp. 4228 4229Code and Data Size: Current and previous core subsystem library sizes are 4230shown below. These are the code and data sizes for the acpica.lib produced 4231by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4232any ACPI driver or OSPM code. The debug version of the code includes the 4233debug output trace mechanism and has a much larger code and data size. Note 4234that these values will vary depending on the efficiency of the compiler and 4235the compiler options used during generation. 4236 4237 Previous Release: 4238 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 4239 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 4240 Current Release: 4241 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total 4242 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total 4243 4244 42452) iASL Compiler/Disassembler: 4246 4247Disassembler fix: Added a check to ensure that the table length found in the 4248ACPI table header within the input file is not longer than the actual input 4249file size. This indicates some kind of file or table corruption. 4250 4251---------------------------------------- 425229 March 2005. Summary of changes for version 20050329: 4253 42541) ACPI CA Core Subsystem: 4255 4256An error is now generated if an attempt is made to create a Buffer Field of 4257length zero (A CreateField with a length operand of zero.) 4258 4259The interpreter now issues a warning whenever executable code at the module 4260level is detected during ACPI table load. This will give some idea of the 4261prevalence of this type of code. 4262 4263Implemented support for references to named objects (other than control 4264methods) within package objects. 4265 4266Enhanced package object output for the debug object. Package objects are now 4267completely dumped, showing all elements. 4268 4269Enhanced miscellaneous object output for the debug object. Any object can 4270now be written to the debug object (for example, a device object can be 4271written, and the type of the object will be displayed.) 4272 4273The "static" qualifier has been added to all local functions across both the 4274core subsystem and the iASL compiler. 4275 4276The number of "long" lines (> 80 chars) within the source has been 4277significantly reduced, by about 1/3. 4278 4279Cleaned up all header files to ensure that all CA/iASL functions are 4280prototyped (even static functions) and the formatting is consistent. 4281 4282Two new header files have been added, acopcode.h and acnames.h. 4283 4284Removed several obsolete functions that were no longer used. 4285 4286Code and Data Size: Current and previous core subsystem library sizes are 4287shown below. These are the code and data sizes for the acpica.lib produced 4288by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4289any ACPI driver or OSPM code. The debug version of the code includes the 4290debug output trace mechanism and has a much larger code and data size. Note 4291that these values will vary depending on the efficiency of the compiler and 4292the compiler options used during generation. 4293 4294 Previous Release: 4295 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4296 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 4297 Current Release: 4298 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total 4299 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total 4300 4301 4302 43032) iASL Compiler/Disassembler: 4304 4305Fixed a problem with the resource descriptor generation/support. For the 4306ResourceSourceIndex and the ResourceSource fields, both must be present, or 4307both must be not present - can't have one without the other. 4308 4309The compiler now returns non-zero from the main procedure if any errors have 4310occurred during the compilation. 4311 4312 4313---------------------------------------- 431409 March 2005. Summary of changes for version 20050309: 4315 43161) ACPI CA Core Subsystem: 4317 4318The string-to-buffer implicit conversion code has been modified again after 4319a change to the ACPI specification. In order to match the behavior of the 4320other major ACPI implementation, the target buffer is no longer truncated if 4321the source string is smaller than an existing target buffer. This change 4322requires an update to the ACPI spec, and should eliminate the recent 4323AE_AML_BUFFER_LIMIT issues. 4324 4325The "implicit return" support was rewritten to a new algorithm that solves 4326the general case. Rather than attempt to determine when a method is about to 4327exit, the result of every ASL operator is saved momentarily until the very 4328next ASL operator is executed. Therefore, no matter how the method exits, 4329there will always be a saved implicit return value. This feature is only 4330enabled with the AcpiGbl_EnableInterpreterSlack flag, and should eliminate 4331AE_AML_NO_RETURN_VALUE errors when enabled. 4332 4333Implemented implicit conversion support for the predicate (operand) of the 4334If, Else, and While operators. String and Buffer arguments are automatically 4335converted to Integers. 4336 4337Changed the string-to-integer conversion behavior to match the new ACPI 4338errata: "If no integer object exists, a new integer is created. The ASCII 4339string is interpreted as a hexadecimal constant. Each string character is 4340interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting 4341with the first character as the most significant digit, and ending with the 4342first non-hexadecimal character or end-of-string." This means that the first 4343non-hex character terminates the conversion and this is the code that was 4344changed. 4345 4346Fixed a problem where the ObjectType operator would fail (fault) when used 4347on an Index of a Package which pointed to a null package element. The 4348operator now properly returns zero (Uninitialized) in this case. 4349 4350Fixed a problem where the While operator used excessive memory by not 4351properly popping the result stack during execution. There was no memory leak 4352after execution, however. (Code provided by Valery Podrezov.) 4353 4354Fixed a problem where references to control methods within Package objects 4355caused the method to be invoked, instead of producing a reference object 4356pointing to the method. 4357 4358Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) to 4359improve performance and reduce code size. (Code provided by Alexey 4360Starikovskiy.) 4361 4362Code and Data Size: Current and previous core subsystem library sizes are 4363shown below. These are the code and data sizes for the acpica.lib produced 4364by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4365any ACPI driver or OSPM code. The debug version of the code includes the 4366debug output trace mechanism and has a much larger code and data size. Note 4367that these values will vary depending on the efficiency of the compiler and 4368the compiler options used during generation. 4369 4370 Previous Release: 4371 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4372 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 4373 Current Release: 4374 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4375 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total 4376 4377 43782) iASL Compiler/Disassembler: 4379 4380Fixed a problem with the Return operator with no arguments. Since the AML 4381grammar for the byte encoding requires an operand for the Return opcode, the 4382compiler now emits a Return(Zero) for this case. An ACPI specification 4383update has been written for this case. 4384 4385For tables other than the DSDT, namepath optimization is automatically 4386disabled. This is because SSDTs can be loaded anywhere in the namespace, the 4387compiler has no knowledge of where, and thus cannot optimize namepaths. 4388 4389Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was 4390inadvertently omitted from the ACPI specification, and will require an 4391update to the spec. 4392 4393The source file scan for ASCII characters is now optional (-a). This change 4394was made because some vendors place non-ascii characters within comments. 4395However, the scan is simply a brute-force byte compare to ensure all 4396characters in the file are in the range 0x00 to 0x7F. 4397 4398Fixed a problem with the CondRefOf operator where the compiler was 4399inappropriately checking for the existence of the target. Since the point of 4400the operator is to check for the existence of the target at run-time, the 4401compiler no longer checks for the target existence. 4402 4403Fixed a problem where errors generated from the internal AML interpreter 4404during constant folding were not handled properly, causing a fault. 4405 4406Fixed a problem with overly aggressive range checking for the Stall 4407operator. The valid range (max 255) is now only checked if the operand is of 4408type Integer. All other operand types cannot be statically checked. 4409 4410Fixed a problem where control method references within the RefOf, DeRefOf, 4411and ObjectType operators were not treated properly. They are now treated as 4412actual references, not method invocations. 4413 4414Fixed and enhanced the "list namespace" option (-ln). This option was broken 4415a number of releases ago. 4416 4417Improved error handling for the Field, IndexField, and BankField operators. 4418The compiler now cleanly reports and recovers from errors in the field 4419component (FieldUnit) list. 4420 4421Fixed a disassembler problem where the optional ResourceDescriptor fields 4422TRS and TTP were not always handled correctly. 4423 4424Disassembler - Comments in output now use "//" instead of "/*" 4425 4426---------------------------------------- 442728 February 2005. Summary of changes for version 20050228: 4428 44291) ACPI CA Core Subsystem: 4430 4431Fixed a problem where the result of an Index() operator (an object 4432reference) must increment the reference count on the target object for the 4433life of the object reference. 4434 4435Implemented AML Interpreter and Debugger support for the new ACPI 3.0 4436Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and WordSpace 4437resource descriptors. 4438 4439Implemented support in the _OSI method for the ACPI 3.0 "Extended Address 4440Space Descriptor" string, indicating interpreter support for the descriptors 4441above. 4442 4443Implemented header support for the new ACPI 3.0 FADT flag bits. 4444 4445Implemented header support for the new ACPI 3.0 PCI Express bits for the PM1 4446status/enable registers. 4447 4448Updated header support for the MADT processor local Apic struct and MADT 4449platform interrupt source struct for new ACPI 3.0 fields. 4450 4451Implemented header support for the SRAT and SLIT ACPI tables. 4452 4453Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" flag 4454at runtime. 4455 4456Code and Data Size: Current and previous core subsystem library sizes are 4457shown below. These are the code and data sizes for the acpica.lib produced 4458by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4459any ACPI driver or OSPM code. The debug version of the code includes the 4460debug output trace mechanism and has a much larger code and data size. Note 4461that these values will vary depending on the efficiency of the compiler and 4462the compiler options used during generation. 4463 4464 Previous Release: 4465 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 4466 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 4467 Current Release: 4468 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4469 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total 4470 4471 44722) iASL Compiler/Disassembler: 4473 4474Fixed a problem with the internal 64-bit String-to-integer conversion with 4475strings less than two characters long. 4476 4477Fixed a problem with constant folding where the result of the Index() 4478operator can not be considered a constant. This means that Index() cannot be 4479a type3 opcode and this will require an update to the ACPI specification. 4480 4481Disassembler: Implemented support for the TTP, MTP, and TRS resource 4482descriptor fields. These fields were inadvertently ignored and not output in 4483the disassembly of the resource descriptor. 4484 4485 4486 ---------------------------------------- 448711 February 2005. Summary of changes for version 20050211: 4488 44891) ACPI CA Core Subsystem: 4490 4491Implemented ACPI 3.0 support for implicit conversion within the Match() 4492operator. MatchObjects can now be of type integer, buffer, or string instead 4493of just type integer. Package elements are implicitly converted to the type 4494of the MatchObject. This change aligns the behavior of Match() with the 4495behavior of the other logical operators (LLess(), etc.) It also requires an 4496errata change to the ACPI specification as this support was intended for 4497ACPI 3.0, but was inadvertently omitted. 4498 4499Fixed a problem with the internal implicit "to buffer" conversion. Strings 4500that are converted to buffers will cause buffer truncation if the string is 4501smaller than the target buffer. Integers that are converted to buffers will 4502not cause buffer truncation, only zero extension (both as per the ACPI 4503spec.) The problem was introduced when code was added to truncate the 4504buffer, but this should not be performed in all cases, only the string case. 4505 4506Fixed a problem with the Buffer and Package operators where the interpreter 4507would get confused if two such operators were used as operands to an ASL 4508operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result 4509stack was not being popped after the execution of these operators, resulting 4510in an AE_NO_RETURN_VALUE exception. 4511 4512Fixed a problem with constructs of the form Store(Index(...),...). The 4513reference object returned from Index was inadvertently resolved to an actual 4514value. This problem was introduced in version 20050114 when the behavior of 4515Store() was modified to restrict the object types that can be used as the 4516source operand (to match the ACPI specification.) 4517 4518Reduced excessive stack use within the AcpiGetObjectInfo procedure. 4519 4520Added a fix to aclinux.h to allow generation of AcpiExec on Linux. 4521 4522Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct. 4523 4524Code and Data Size: Current and previous core subsystem library sizes are 4525shown below. These are the code and data sizes for the acpica.lib produced 4526by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4527any ACPI driver or OSPM code. The debug version of the code includes the 4528debug output trace mechanism and has a much larger code and data size. Note 4529that these values will vary depending on the efficiency of the compiler and 4530the compiler options used during generation. 4531 4532 Previous Release: 4533 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 4534 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 4535 Current Release: 4536 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total 4537 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total 4538 4539 45402) iASL Compiler/Disassembler: 4541 4542Fixed a code generation problem in the constant folding optimization code 4543where incorrect code was generated if a constant was reduced to a buffer 4544object (i.e., a reduced type 5 opcode.) 4545 4546Fixed a typechecking problem for the ToBuffer operator. Caused by an 4547incorrect return type in the internal opcode information table. 4548 4549---------------------------------------- 455025 January 2005. Summary of changes for version 20050125: 4551 45521) ACPI CA Core Subsystem: 4553 4554Fixed a recently introduced problem with the Global Lock where the 4555underlying semaphore was not created. This problem was introduced in 4556version 20050114, and caused an AE_AML_NO_OPERAND exception during an 4557Acquire() operation on _GL. 4558 4559The local object cache is now optional, and is disabled by default. Both 4560AcpiExec and the iASL compiler enable the cache because they run in user 4561mode and this enhances their performance. #define ACPI_ENABLE_OBJECT_CACHE 4562to enable the local cache. 4563 4564Fixed an issue in the internal function AcpiUtEvaluateObject concerning the 4565optional "implicit return" support where an error was returned if no return 4566object was expected, but one was implicitly returned. AE_OK is now returned 4567in this case and the implicitly returned object is deleted. 4568AcpiUtEvaluateObject is only occasionally used, and only to execute reserved 4569methods such as _STA and _INI where the return type is known up front. 4570 4571Fixed a few issues with the internal convert-to-integer code. It now returns 4572an error if an attempt is made to convert a null string, a string of only 4573blanks/tabs, or a zero-length buffer. This affects both implicit conversion 4574and explicit conversion via the ToInteger() operator. 4575 4576The internal debug code in AcpiUtAcquireMutex has been commented out. It is 4577not needed for normal operation and should increase the performance of the 4578entire subsystem. The code remains in case it is needed for debug purposes 4579again. 4580 4581The AcpiExec source and makefile are included in the Unix/Linux package for 4582the first time. 4583 4584Code and Data Size: Current and previous core subsystem library sizes are 4585shown below. These are the code and data sizes for the acpica.lib produced 4586by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4587any ACPI driver or OSPM code. The debug version of the code includes the 4588debug output trace mechanism and has a much larger code and data size. Note 4589that these values will vary depending on the efficiency of the compiler and 4590the compiler options used during generation. 4591 4592 Previous Release: 4593 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 4594 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 4595 Current Release: 4596 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total 4597 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total 4598 45992) iASL Compiler/Disassembler: 4600 4601Switch/Case support: A warning is now issued if the type of the Switch value 4602cannot be determined at compile time. For example, Switch(Arg0) will 4603generate the warning, and the type is assumed to be an integer. As per the 4604ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate the 4605warning. 4606 4607Switch/Case support: Implemented support for buffer and string objects as 4608the switch value. This is an ACPI 3.0 feature, now that LEqual supports 4609buffers and strings. 4610 4611Switch/Case support: The emitted code for the LEqual() comparisons now uses 4612the switch value as the first operand, not the second. The case value is now 4613the second operand, and this allows the case value to be implicitly 4614converted to the type of the switch value, not the other way around. 4615 4616Switch/Case support: Temporary variables are now emitted immediately within 4617the control method, not at the global level. This means that there are now 461836 temps available per-method, not 36 temps per-module as was the case with 4619the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.) 4620 4621---------------------------------------- 462214 January 2005. Summary of changes for version 20050114: 4623 4624Added 2005 copyright to all module headers. This affects every module in 4625the core subsystem, iASL compiler, and the utilities. 4626 46271) ACPI CA Core Subsystem: 4628 4629Fixed an issue with the String-to-Buffer conversion code where the string 4630null terminator was not included in the buffer after conversion, but there 4631is existing ASL that assumes the string null terminator is included. This is 4632the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was 4633introduced in the previous version when the code was updated to correctly 4634set the converted buffer size as per the ACPI specification. The ACPI spec 4635is ambiguous and will be updated to specify that the null terminator must be 4636included in the converted buffer. This also affects the ToBuffer() ASL 4637operator. 4638 4639Fixed a problem with the Mid() ASL/AML operator where it did not work 4640correctly on Buffer objects. Newly created sub-buffers were not being marked 4641as initialized. 4642 4643 4644Fixed a problem in AcpiTbFindTable where incorrect string compares were 4645performed on the OemId and OemTableId table header fields. These fields are 4646not null terminated, so strncmp is now used instead of strcmp. 4647 4648Implemented a restriction on the Store() ASL/AML operator to align the 4649behavior with the ACPI specification. Previously, any object could be used 4650as the source operand. Now, the only objects that may be used are Integers, 4651Buffers, Strings, Packages, Object References, and DDB Handles. If 4652necessary, the original behavior can be restored by enabling the 4653EnableInterpreterSlack flag. 4654 4655Enhanced the optional "implicit return" support to allow an implicit return 4656value from methods that are invoked externally via the AcpiEvaluateObject 4657interface. This enables implicit returns from the _STA and _INI methods, 4658for example. 4659 4660Changed the Revision() ASL/AML operator to return the current version of the 4661AML interpreter, in the YYYYMMDD format. Previously, it incorrectly returned 4662the supported ACPI version (This is the function of the _REV method). 4663 4664Updated the _REV predefined method to return the currently supported version 4665of ACPI, now 3. 4666 4667Implemented batch mode option for the AcpiExec utility (-b). 4668 4669Code and Data Size: Current and previous core subsystem library sizes are 4670shown below. These are the code and data sizes for the acpica.lib produced 4671by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4672any ACPI driver or OSPM code. The debug version of the code includes the 4673debug output trace mechanism and has a much larger code and data size. Note 4674that these values will vary depending on the efficiency of the compiler and 4675the compiler options used during generation. 4676 4677 Previous Release: 4678 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4679 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 4680 Current Release: 4681 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total 4682 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total 4683 4684---------------------------------------- 468510 December 2004. Summary of changes for version 20041210: 4686 4687ACPI 3.0 support is nearing completion in both the iASL compiler and the 4688ACPI CA core subsystem. 4689 46901) ACPI CA Core Subsystem: 4691 4692Fixed a problem in the ToDecimalString operator where the resulting string 4693length was incorrectly calculated. The length is now calculated exactly, 4694eliminating incorrect AE_STRING_LIMIT exceptions. 4695 4696Fixed a problem in the ToHexString operator to allow a maximum 200 character 4697string to be produced. 4698 4699Fixed a problem in the internal string-to-buffer and buffer-to-buffer copy 4700routine where the length of the resulting buffer was not truncated to the 4701new size (if the target buffer already existed). 4702 4703Code and Data Size: Current and previous core subsystem library sizes are 4704shown below. These are the code and data sizes for the acpica.lib produced 4705by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4706any ACPI driver or OSPM code. The debug version of the code includes the 4707debug output trace mechanism and has a much larger code and data size. Note 4708that these values will vary depending on the efficiency of the compiler and 4709the compiler options used during generation. 4710 4711 Previous Release: 4712 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4713 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 4714 Current Release: 4715 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4716 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total 4717 4718 47192) iASL Compiler/Disassembler: 4720 4721Implemented the new ACPI 3.0 resource template macros - DWordSpace, 4722ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace. 4723Includes support in the disassembler. 4724 4725Implemented support for the new (ACPI 3.0) parameter to the Register macro, 4726AccessSize. 4727 4728Fixed a problem where the _HE resource name for the Interrupt macro was 4729referencing bit 0 instead of bit 1. 4730 4731Implemented check for maximum 255 interrupts in the Interrupt macro. 4732 4733Fixed a problem with the predefined resource descriptor names where 4734incorrect AML code was generated if the offset within the resource buffer 4735was 0 or 1. The optimizer shortened the AML code to a single byte opcode 4736but did not update the surrounding package lengths. 4737 4738Changes to the Dma macro: All channels within the channel list must be in 4739the range 0-7. Maximum 8 channels can be specified. BusMaster operand is 4740optional (default is BusMaster). 4741 4742Implemented check for maximum 7 data bytes for the VendorShort macro. 4743 4744The ReadWrite parameter is now optional for the Memory32 and similar macros. 4745 4746---------------------------------------- 474703 December 2004. Summary of changes for version 20041203: 4748 47491) ACPI CA Core Subsystem: 4750 4751The low-level field insertion/extraction code (exfldio) has been completely 4752rewritten to eliminate unnecessary complexity, bugs, and boundary 4753conditions. 4754 4755Fixed a problem in the ToInteger, ToBuffer, ToHexString, and ToDecimalString 4756operators where the input operand could be inadvertently deleted if no 4757conversion was necessary (e.g., if the input to ToInteger was an Integer 4758object.) 4759 4760Fixed a problem with the ToDecimalString and ToHexString where an incorrect 4761exception code was returned if the resulting string would be > 200 chars. 4762AE_STRING_LIMIT is now returned. 4763 4764Fixed a problem with the Concatenate operator where AE_OK was always 4765returned, even if the operation failed. 4766 4767Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128 4768semaphores to be allocated. 4769 4770Code and Data Size: Current and previous core subsystem library sizes are 4771shown below. These are the code and data sizes for the acpica.lib produced 4772by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4773any ACPI driver or OSPM code. The debug version of the code includes the 4774debug output trace mechanism and has a much larger code and data size. Note 4775that these values will vary depending on the efficiency of the compiler and 4776the compiler options used during generation. 4777 4778 Previous Release: 4779 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 4780 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 4781 Current Release: 4782 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total 4783 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total 4784 4785 47862) iASL Compiler/Disassembler: 4787 4788Fixed typechecking for the ObjectType and SizeOf operators. Problem was 4789recently introduced in 20041119. 4790 4791Fixed a problem with the ToUUID macro where the upper nybble of each buffer 4792byte was inadvertently set to zero. 4793 4794---------------------------------------- 479519 November 2004. Summary of changes for version 20041119: 4796 47971) ACPI CA Core Subsystem: 4798 4799Fixed a problem in the internal ConvertToInteger routine where new integers 4800were not truncated to 32 bits for 32-bit ACPI tables. This routine converts 4801buffers and strings to integers. 4802 4803Implemented support to store a value to an Index() on a String object. This 4804is an ACPI 2.0 feature that had not yet been implemented. 4805 4806Implemented new behavior for storing objects to individual package elements 4807(via the Index() operator). The previous behavior was to invoke the implicit 4808conversion rules if an object was already present at the index. The new 4809behavior is to simply delete any existing object and directly store the new 4810object. Although the ACPI specification seems unclear on this subject, other 4811ACPI implementations behave in this manner. (This is the root of the 4812AE_BAD_HEX_CONSTANT issue.) 4813 4814Modified the RSDP memory scan mechanism to support the extended checksum for 4815ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid 4816RSDP signature is found with a valid checksum. 4817 4818Code and Data Size: Current and previous core subsystem library sizes are 4819shown below. These are the code and data sizes for the acpica.lib produced 4820by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4821any ACPI driver or OSPM code. The debug version of the code includes the 4822debug output trace mechanism and has a much larger code and data size. Note 4823that these values will vary depending on the efficiency of the compiler and 4824the compiler options used during generation. 4825 4826 Previous Release: 4827 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 4828 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 4829 Current Release: 4830 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 4831 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 4832 4833 48342) iASL Compiler/Disassembler: 4835 4836Fixed a missing semicolon in the aslcompiler.y file. 4837 4838---------------------------------------- 483905 November 2004. Summary of changes for version 20041105: 4840 48411) ACPI CA Core Subsystem: 4842 4843Implemented support for FADT revision 2. This was an interim table (between 4844ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register. 4845 4846Implemented optional support to allow uninitialized LocalX and ArgX 4847variables in a control method. The variables are initialized to an Integer 4848object with a value of zero. This support is enabled by setting the 4849AcpiGbl_EnableInterpreterSlack flag to TRUE. 4850 4851Implemented support for Integer objects for the SizeOf operator. Either 4 4852or 8 is returned, depending on the current integer size (32-bit or 64-bit, 4853depending on the parent table revision). 4854 4855Fixed a problem in the implementation of the SizeOf and ObjectType operators 4856where the operand was resolved to a value too early, causing incorrect 4857return values for some objects. 4858 4859Fixed some possible memory leaks during exceptional conditions. 4860 4861Code and Data Size: Current and previous core subsystem library sizes are 4862shown below. These are the code and data sizes for the acpica.lib produced 4863by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4864any ACPI driver or OSPM code. The debug version of the code includes the 4865debug output trace mechanism and has a much larger code and data size. Note 4866that these values will vary depending on the efficiency of the compiler and 4867the compiler options used during generation. 4868 4869 Previous Release: 4870 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 4871 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 4872 Current Release: 4873 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total 4874 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total 4875 4876 48772) iASL Compiler/Disassembler: 4878 4879Implemented support for all ACPI 3.0 reserved names and methods. 4880 4881Implemented all ACPI 3.0 grammar elements in the front-end, including 4882support for semicolons. 4883 4884Implemented the ACPI 3.0 Function() and ToUUID() macros 4885 4886Fixed a problem in the disassembler where a Scope() operator would not be 4887emitted properly if the target of the scope was in another table. 4888 4889---------------------------------------- 489015 October 2004. Summary of changes for version 20041015: 4891 4892Note: ACPI CA is currently undergoing an in-depth and complete formal 4893evaluation to test/verify the following areas. Other suggestions are 4894welcome. This will result in an increase in the frequency of releases and 4895the number of bug fixes in the next few months. 4896 - Functional tests for all ASL/AML operators 4897 - All implicit/explicit type conversions 4898 - Bit fields and operation regions 4899 - 64-bit math support and 32-bit-only "truncated" math support 4900 - Exceptional conditions, both compiler and interpreter 4901 - Dynamic object deletion and memory leaks 4902 - ACPI 3.0 support when implemented 4903 - External interfaces to the ACPI subsystem 4904 4905 49061) ACPI CA Core Subsystem: 4907 4908Fixed two alignment issues on 64-bit platforms - within debug statements in 4909AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the Address 4910field within the non-aligned ACPI generic address structure. 4911 4912Fixed a problem in the Increment and Decrement operators where incorrect 4913operand resolution could result in the inadvertent modification of the 4914original integer when the integer is passed into another method as an 4915argument and the arg is then incremented/decremented. 4916 4917Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-bit 4918BCD number were truncated during conversion. 4919 4920Fixed a problem in the ToDecimal operator where the length of the resulting 4921string could be set incorrectly too long if the input operand was a Buffer 4922object. 4923 4924Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte (0) 4925within a buffer would prematurely terminate a compare between buffer 4926objects. 4927 4928Added a check for string overflow (>200 characters as per the ACPI 4929specification) during the Concatenate operator with two string operands. 4930 4931Code and Data Size: Current and previous core subsystem library sizes are 4932shown below. These are the code and data sizes for the acpica.lib produced 4933by the Microsoft Visual C++ 6.0 compiler, and these values do not include 4934any ACPI driver or OSPM code. The debug version of the code includes the 4935debug output trace mechanism and has a much larger code and data size. Note 4936that these values will vary depending on the efficiency of the compiler and 4937the compiler options used during generation. 4938 4939 Previous Release: 4940 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 4941 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 4942 Current Release: 4943 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 4944 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total 4945 4946 4947 49482) iASL Compiler/Disassembler: 4949 4950Allow the use of the ObjectType operator on uninitialized Locals and Args 4951(returns 0 as per the ACPI specification). 4952 4953Fixed a problem where the compiler would fault if there was a syntax error 4954in the FieldName of all of the various CreateXXXField operators. 4955 4956Disallow the use of lower case letters within the EISAID macro, as per the 4957ACPI specification. All EISAID strings must be of the form "UUUNNNN" Where 4958U is an uppercase letter and N is a hex digit. 4959 4960 4961---------------------------------------- 496206 October 2004. Summary of changes for version 20041006: 4963 49641) ACPI CA Core Subsystem: 4965 4966Implemented support for the ACPI 3.0 Timer operator. This ASL function 4967implements a 64-bit timer with 100 nanosecond granularity. 4968 4969Defined a new OSL interface, AcpiOsGetTimer. This interface is used to 4970implement the ACPI 3.0 Timer operator. This allows the host OS to implement 4971the timer with the best clock available. Also, it keeps the core subsystem 4972out of the clock handling business, since the host OS (usually) performs 4973this function. 4974 4975Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write) 4976functions use a 64-bit address which is part of the packed ACPI Generic 4977Address Structure. Since the structure is non-aligned, the alignment macros 4978are now used to extract the address to a local variable before use. 4979 4980Fixed a problem where the ToInteger operator assumed all input strings were 4981hexadecimal. The operator now handles both decimal strings and hex strings 4982(prefixed with "0x"). 4983 4984Fixed a problem where the string length in the string object created as a 4985result of the internal ConvertToString procedure could be incorrect. This 4986potentially affected all implicit conversions and also the ToDecimalString 4987and ToHexString operators. 4988 4989Fixed two problems in the ToString operator. If the length parameter was 4990zero, an incorrect string object was created and the value of the input 4991length parameter was inadvertently changed from zero to Ones. 4992 4993Fixed a problem where the optional ResourceSource string in the ExtendedIRQ 4994resource macro was ignored. 4995 4996Simplified the interfaces to the internal division functions, reducing code 4997size and complexity. 4998 4999Code and Data Size: Current and previous core subsystem library sizes are 5000shown below. These are the code and data sizes for the acpica.lib produced 5001by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5002any ACPI driver or OSPM code. The debug version of the code includes the 5003debug output trace mechanism and has a much larger code and data size. Note 5004that these values will vary depending on the efficiency of the compiler and 5005the compiler options used during generation. 5006 5007 Previous Release: 5008 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 5009 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 5010 Current Release: 5011 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 5012 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total 5013 5014 50152) iASL Compiler/Disassembler: 5016 5017Implemented support for the ACPI 3.0 Timer operator. 5018 5019Fixed a problem where the Default() operator was inadvertently ignored in a 5020Switch/Case block. This was a problem in the translation of the Switch 5021statement to If...Else pairs. 5022 5023Added support to allow a standalone Return operator, with no parentheses (or 5024operands). 5025 5026Fixed a problem with code generation for the ElseIf operator where the 5027translated Else...If parse tree was improperly constructed leading to the 5028loss of some code. 5029 5030---------------------------------------- 503122 September 2004. Summary of changes for version 20040922: 5032 50331) ACPI CA Core Subsystem: 5034 5035Fixed a problem with the implementation of the LNot() operator where "Ones" 5036was not returned for the TRUE case. Changed the code to return Ones instead 5037of (!Arg) which was usually 1. This change affects iASL constant folding for 5038this operator also. 5039 5040Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was not 5041initialized properly -- Now zero the entire buffer in this case where the 5042buffer already exists. 5043 5044Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32 5045Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all 5046related code considerably. This will require changes/updates to all OS 5047interface layers (OSLs.) 5048 5049Implemented a new external interface, AcpiInstallExceptionHandler, to allow 5050a system exception handler to be installed. This handler is invoked upon any 5051run-time exception that occurs during control method execution. 5052 5053Added support for the DSDT in AcpiTbFindTable. This allows the 5054DataTableRegion() operator to access the local copy of the DSDT. 5055 5056Code and Data Size: Current and previous core subsystem library sizes are 5057shown below. These are the code and data sizes for the acpica.lib produced 5058by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5059any ACPI driver or OSPM code. The debug version of the code includes the 5060debug output trace mechanism and has a much larger code and data size. Note 5061that these values will vary depending on the efficiency of the compiler and 5062the compiler options used during generation. 5063 5064 Previous Release: 5065 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 5066 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 5067 Current Release: 5068 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total 5069 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total 5070 5071 50722) iASL Compiler/Disassembler: 5073 5074Fixed a problem with constant folding and the LNot operator. LNot was 5075returning 1 in the TRUE case, not Ones as per the ACPI specification. This 5076could result in the generation of an incorrect folded/reduced constant. 5077 5078End-Of-File is now allowed within a "//"-style comment. A parse error no 5079longer occurs if such a comment is at the very end of the input ASL source 5080file. 5081 5082Implemented the "-r" option to override the Revision in the table header. 5083The initial use of this option will be to simplify the evaluation of the AML 5084interpreter by allowing a single ASL source module to be compiled for either 508532-bit or 64-bit integers. 5086 5087 5088---------------------------------------- 508927 August 2004. Summary of changes for version 20040827: 5090 50911) ACPI CA Core Subsystem: 5092 5093- Implemented support for implicit object conversion in the non-numeric 5094logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, and 5095LNotEqual.) Any combination of Integers/Strings/Buffers may now be used; 5096the second operand is implicitly converted on the fly to match the type of 5097the first operand. For example: 5098 5099 LEqual (Source1, Source2) 5100 5101Source1 and Source2 must each evaluate to an integer, a string, or a buffer. 5102The data type of Source1 dictates the required type of Source2. Source2 is 5103implicitly converted if necessary to match the type of Source1. 5104 5105- Updated and corrected the behavior of the string conversion support. The 5106rules concerning conversion of buffers to strings (according to the ACPI 5107specification) are as follows: 5108 5109ToDecimalString - explicit byte-wise conversion of buffer to string of 5110decimal values (0-255) separated by commas. ToHexString - explicit byte-wise 5111conversion of buffer to string of hex values (0-FF) separated by commas. 5112ToString - explicit byte-wise conversion of buffer to string. Byte-by-byte 5113copy with no transform except NULL terminated. Any other implicit buffer-to- 5114string conversion - byte-wise conversion of buffer to string of hex values 5115(0-FF) separated by spaces. 5116 5117- Fixed typo in definition of AcpiGbl_EnableInterpreterSlack. 5118 5119- Fixed a problem in AcpiNsGetPathnameLength where the returned length was 5120one byte too short in the case of a node in the root scope. This could 5121cause a fault during debug output. 5122 5123- Code and Data Size: Current and previous core subsystem library sizes are 5124shown below. These are the code and data sizes for the acpica.lib produced 5125by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5126any ACPI driver or OSPM code. The debug version of the code includes the 5127debug output trace mechanism and has a much larger code and data size. Note 5128that these values will vary depending on the efficiency of the compiler and 5129the compiler options used during generation. 5130 5131 Previous Release: 5132 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 5133 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 5134 Current Release: 5135 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total 5136 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total 5137 5138 51392) iASL Compiler/Disassembler: 5140 5141- Fixed a Linux generation error. 5142 5143 5144---------------------------------------- 514516 August 2004. Summary of changes for version 20040816: 5146 51471) ACPI CA Core Subsystem: 5148 5149Designed and implemented support within the AML interpreter for the so- 5150called "implicit return". This support returns the result of the last ASL 5151operation within a control method, in the absence of an explicit Return() 5152operator. A few machines depend on this behavior, even though it is not 5153explicitly supported by the ASL language. It is optional support that can 5154be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag. 5155 5156Removed support for the PCI_Config address space from the internal low level 5157hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This 5158support was not used internally, and would not work correctly anyway because 5159the PCI bus number and segment number were not supported. There are 5160separate interfaces for PCI configuration space access because of the unique 5161interface. 5162 5163Code and Data Size: Current and previous core subsystem library sizes are 5164shown below. These are the code and data sizes for the acpica.lib produced 5165by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5166any ACPI driver or OSPM code. The debug version of the code includes the 5167debug output trace mechanism and has a much larger code and data size. Note 5168that these values will vary depending on the efficiency of the compiler and 5169the compiler options used during generation. 5170 5171 Previous Release: 5172 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 5173 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 5174 Current Release: 5175 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total 5176 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total 5177 5178 51792) iASL Compiler/Disassembler: 5180 5181Fixed a problem where constants in ASL expressions at the root level (not 5182within a control method) could be inadvertently truncated during code 5183generation. This problem was introduced in the 20040715 release. 5184 5185 5186---------------------------------------- 518715 July 2004. Summary of changes for version 20040715: 5188 51891) ACPI CA Core Subsystem: 5190 5191Restructured the internal HW GPE interfaces to pass/track the current state 5192of interrupts (enabled/disabled) in order to avoid possible deadlock and 5193increase flexibility of the interfaces. 5194 5195Implemented a "lexicographical compare" for String and Buffer objects within 5196the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -- 5197as per further clarification to the ACPI specification. Behavior is similar 5198to C library "strcmp". 5199 5200Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable 5201external function. In the 32-bit non-debug case, the stack use has been 5202reduced from 168 bytes to 32 bytes. 5203 5204Deployed a new run-time configuration flag, AcpiGbl_EnableInterpreterSlack, 5205whose purpose is to allow the AML interpreter to forgive certain bad AML 5206constructs. Default setting is FALSE. 5207 5208Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field IO 5209support code. If enabled, it allows field access to go beyond the end of a 5210region definition if the field is within the region length rounded up to the 5211next access width boundary (a common coding error.) 5212 5213Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to 5214ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also, these 5215symbols are lowercased by the latest version of the AcpiSrc tool. 5216 5217The prototypes for the PCI interfaces in acpiosxf.h have been updated to 5218rename "Register" to simply "Reg" to prevent certain compilers from 5219complaining. 5220 5221Code and Data Size: Current and previous core subsystem library sizes are 5222shown below. These are the code and data sizes for the acpica.lib produced 5223by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5224any ACPI driver or OSPM code. The debug version of the code includes the 5225debug output trace mechanism and has a much larger code and data size. Note 5226that these values will vary depending on the efficiency of the compiler and 5227the compiler options used during generation. 5228 5229 Previous Release: 5230 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 5231 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 5232 Current Release: 5233 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total 5234 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total 5235 5236 52372) iASL Compiler/Disassembler: 5238 5239Implemented full support for Package objects within the Case() operator. 5240Note: The Break() operator is currently not supported within Case blocks 5241(TermLists) as there is some question about backward compatibility with ACPI 52421.0 interpreters. 5243 5244 5245Fixed a problem where complex terms were not supported properly within the 5246Switch() operator. 5247 5248Eliminated extraneous warning for compiler-emitted reserved names of the 5249form "_T_x". (Used in Switch/Case operators.) 5250 5251Eliminated optimization messages for "_T_x" objects and small constants 5252within the DefinitionBlock operator. 5253 5254 5255---------------------------------------- 525615 June 2004. Summary of changes for version 20040615: 5257 52581) ACPI CA Core Subsystem: 5259 5260Implemented support for Buffer and String objects (as per ACPI 2.0) for the 5261following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 5262LLessEqual. 5263 5264All directory names in the entire source package are lower case, as they 5265were in earlier releases. 5266 5267Implemented "Disassemble" command in the AML debugger that will disassemble 5268a single control method. 5269 5270Code and Data Size: Current and previous core subsystem library sizes are 5271shown below. These are the code and data sizes for the acpica.lib produced 5272by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5273any ACPI driver or OSPM code. The debug version of the code includes the 5274debug output trace mechanism and has a much larger code and data size. Note 5275that these values will vary depending on the efficiency of the compiler and 5276the compiler options used during generation. 5277 5278 Previous Release: 5279 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 5280 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 5281 5282 Current Release: 5283 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total 5284 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total 5285 5286 52872) iASL Compiler/Disassembler: 5288 5289Implemented support for Buffer and String objects (as per ACPI 2.0) for the 5290following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and 5291LLessEqual. 5292 5293All directory names in the entire source package are lower case, as they 5294were in earlier releases. 5295 5296Fixed a fault when using the -g or -d<nofilename> options if the FADT was 5297not found. 5298 5299Fixed an issue with the Windows version of the compiler where later versions 5300of Windows place the FADT in the registry under the name "FADT" and not 5301"FACP" as earlier versions did. This applies when using the -g or - 5302d<nofilename> options. The compiler now looks for both strings as 5303necessary. 5304 5305Fixed a problem with compiler namepath optimization where a namepath within 5306the Scope() operator could not be optimized if the namepath was a subpath of 5307the current scope path. 5308 5309---------------------------------------- 531027 May 2004. Summary of changes for version 20040527: 5311 53121) ACPI CA Core Subsystem: 5313 5314Completed a new design and implementation for EBDA (Extended BIOS Data Area) 5315support in the RSDP scan code. The original code improperly scanned for the 5316EBDA by simply scanning from memory location 0 to 0x400. The correct method 5317is to first obtain the EBDA pointer from within the BIOS data area, then 5318scan 1K of memory starting at the EBDA pointer. There appear to be few if 5319any machines that place the RSDP in the EBDA, however. 5320 5321Integrated a fix for a possible fault during evaluation of BufferField 5322arguments. Obsolete code that was causing the problem was removed. 5323 5324Found and fixed a problem in the Field Support Code where data could be 5325corrupted on a bit field read that starts on an aligned boundary but does 5326not end on an aligned boundary. Merged the read/write "datum length" 5327calculation code into a common procedure. 5328 5329Rolled in a couple of changes to the FreeBSD-specific header. 5330 5331 5332Code and Data Size: Current and previous core subsystem library sizes are 5333shown below. These are the code and data sizes for the acpica.lib produced 5334by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5335any ACPI driver or OSPM code. The debug version of the code includes the 5336debug output trace mechanism and has a much larger code and data size. Note 5337that these values will vary depending on the efficiency of the compiler and 5338the compiler options used during generation. 5339 5340 Previous Release: 5341 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 5342 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 5343 Current Release: 5344 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total 5345 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total 5346 5347 53482) iASL Compiler/Disassembler: 5349 5350Fixed a generation warning produced by some overly-verbose compilers for a 535164-bit constant. 5352 5353---------------------------------------- 535414 May 2004. Summary of changes for version 20040514: 5355 53561) ACPI CA Core Subsystem: 5357 5358Fixed a problem where hardware GPE enable bits sometimes not set properly 5359during and after GPE method execution. Result of 04/27 changes. 5360 5361Removed extra "clear all GPEs" when sleeping/waking. 5362 5363Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single 5364AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above to 5365the new AcpiEv* calls as appropriate. 5366 5367ACPI_OS_NAME was removed from the OS-specific headers. The default name is 5368now "Microsoft Windows NT" for maximum compatibility. However this can be 5369changed by modifying the acconfig.h file. 5370 5371Allow a single invocation of AcpiInstallNotifyHandler for a handler that 5372traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag. 5373 5374Run _INI methods on ThermalZone objects. This is against the ACPI 5375specification, but there is apparently ASL code in the field that has these 5376_INI methods, and apparently "other" AML interpreters execute them. 5377 5378Performed a full 16/32/64 bit lint that resulted in some small changes. 5379 5380Added a sleep simulation command to the AML debugger to test sleep code. 5381 5382Code and Data Size: Current and previous core subsystem library sizes are 5383shown below. These are the code and data sizes for the acpica.lib produced 5384by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5385any ACPI driver or OSPM code. The debug version of the code includes the 5386debug output trace mechanism and has a much larger code and data size. Note 5387that these values will vary depending on the efficiency of the compiler and 5388the compiler options used during generation. 5389 5390 Previous Release: 5391 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 5392 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 5393 Current Release: 5394 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 5395 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total 5396 5397---------------------------------------- 539827 April 2004. Summary of changes for version 20040427: 5399 54001) ACPI CA Core Subsystem: 5401 5402Completed a major overhaul of the GPE handling within ACPI CA. There are 5403now three types of GPEs: wake-only, runtime-only, and combination wake/run. 5404The only GPEs allowed to be combination wake/run are for button-style 5405devices such as a control-method power button, control-method sleep button, 5406or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are not 5407referenced by any _PRW methods are marked for "runtime" and hardware 5408enabled. Any GPE that is referenced by a _PRW method is marked for "wake" 5409(and disabled at runtime). However, at sleep time, only those GPEs that 5410have been specifically enabled for wake via the AcpiEnableGpe interface will 5411actually be hardware enabled. 5412 5413A new external interface has been added, AcpiSetGpeType(), that is meant to 5414be used by device drivers to force a GPE to a particular type. It will be 5415especially useful for the drivers for the button devices mentioned above. 5416 5417Completed restructuring of the ACPI CA initialization sequence so that 5418default operation region handlers are installed before GPEs are initialized 5419and the _PRW methods are executed. This will prevent errors when the _PRW 5420methods attempt to access system memory or I/O space. 5421 5422GPE enable/disable no longer reads the GPE enable register. We now keep the 5423enable info for runtime and wake separate and in the GPE_EVENT_INFO. We 5424thus no longer depend on the hardware to maintain these bits. 5425 5426Always clear the wake status and fixed/GPE status bits before sleep, even 5427for state S5. 5428 5429Improved the AML debugger output for displaying the GPE blocks and their 5430current status. 5431 5432Added new strings for the _OSI method, of the form "Windows 2001 SPx" where 5433x = 0,1,2,3,4. 5434 5435Fixed a problem where the physical address was incorrectly calculated when 5436the Load() operator was used to directly load from an Operation Region (vs. 5437loading from a Field object.) Also added check for minimum table length for 5438this case. 5439 5440Fix for multiple mutex acquisition. Restore original thread SyncLevel on 5441mutex release. 5442 5443Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for 5444consistency with the other fields returned. 5445 5446Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such 5447structure for each GPE in the system, so the size of this structure is 5448important. 5449 5450CPU stack requirement reduction: Cleaned up the method execution and object 5451evaluation paths so that now a parameter structure is passed, instead of 5452copying the various method parameters over and over again. 5453 5454In evregion.c: Correctly exit and reenter the interpreter region if and 5455only if dispatching an operation region request to a user-installed handler. 5456Do not exit/reenter when dispatching to a default handler (e.g., default 5457system memory or I/O handlers) 5458 5459 5460Notes for updating drivers for the new GPE support. The following changes 5461must be made to ACPI-related device drivers that are attached to one or more 5462GPEs: (This information will be added to the ACPI CA Programmer Reference.) 5463 54641) AcpiInstallGpeHandler no longer automatically enables the GPE, you must 5465explicitly call AcpiEnableGpe. 54662) There is a new interface called AcpiSetGpeType. This should be called 5467before enabling the GPE. Also, this interface will automatically disable 5468the GPE if it is currently enabled. 54693) AcpiEnableGpe no longer supports a GPE type flag. 5470 5471Specific drivers that must be changed: 54721) EC driver: 5473 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED, 5474AeGpeHandler, NULL); 5475 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME); 5476 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR); 5477 54782) Button Drivers (Power, Lid, Sleep): 5479Run _PRW method under parent device 5480If _PRW exists: /* This is a control-method button */ 5481 Extract GPE number and possibly GpeDevice 5482 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN); 5483 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR); 5484 5485For all other devices that have _PRWs, we automatically set the GPE type to 5486ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. This 5487must be done on a selective basis, usually requiring some kind of user app 5488to allow the user to pick the wake devices. 5489 5490 5491Code and Data Size: Current and previous core subsystem library sizes are 5492shown below. These are the code and data sizes for the acpica.lib produced 5493by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5494any ACPI driver or OSPM code. The debug version of the code includes the 5495debug output trace mechanism and has a much larger code and data size. Note 5496that these values will vary depending on the efficiency of the compiler and 5497the compiler options used during generation. 5498 5499 Previous Release: 5500 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 5501 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 5502 Current Release: 5503 5504 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total 5505 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total 5506 5507 5508 5509---------------------------------------- 551002 April 2004. Summary of changes for version 20040402: 5511 55121) ACPI CA Core Subsystem: 5513 5514Fixed an interpreter problem where an indirect store through an ArgX 5515parameter was incorrectly applying the "implicit conversion rules" during 5516the store. From the ACPI specification: "If the target is a method local or 5517argument (LocalX or ArgX), no conversion is performed and the result is 5518stored directly to the target". The new behavior is to disable implicit 5519conversion during ALL stores to an ArgX. 5520 5521Changed the behavior of the _PRW method scan to ignore any and all errors 5522returned by a given _PRW. This prevents the scan from aborting from the 5523failure of any single _PRW. 5524 5525Moved the runtime configuration parameters from the global init procedure to 5526static variables in acglobal.h. This will allow the host to override the 5527default values easily. 5528 5529Code and Data Size: Current and previous core subsystem library sizes are 5530shown below. These are the code and data sizes for the acpica.lib produced 5531by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5532any ACPI driver or OSPM code. The debug version of the code includes the 5533debug output trace mechanism and has a much larger code and data size. Note 5534that these values will vary depending on the efficiency of the compiler and 5535the compiler options used during generation. 5536 5537 Previous Release: 5538 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 5539 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 5540 Current Release: 5541 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total 5542 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total 5543 5544 55452) iASL Compiler/Disassembler: 5546 5547iASL now fully disassembles SSDTs. However, External() statements are not 5548generated automatically for unresolved symbols at this time. This is a 5549planned feature for future implementation. 5550 5551Fixed a scoping problem in the disassembler that occurs when the type of the 5552target of a Scope() operator is overridden. This problem caused an 5553incorrectly nested internal namespace to be constructed. 5554 5555Any warnings or errors that are emitted during disassembly are now commented 5556out automatically so that the resulting file can be recompiled without any 5557hand editing. 5558 5559---------------------------------------- 556026 March 2004. Summary of changes for version 20040326: 5561 55621) ACPI CA Core Subsystem: 5563 5564Implemented support for "wake" GPEs via interaction between GPEs and the 5565_PRW methods. Every GPE that is pointed to by one or more _PRWs is 5566identified as a WAKE GPE and by default will no longer be enabled at 5567runtime. Previously, we were blindly enabling all GPEs with a corresponding 5568_Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway. We 5569believe this has been the cause of thousands of "spurious" GPEs on some 5570systems. 5571 5572This new GPE behavior is can be reverted to the original behavior (enable 5573ALL GPEs at runtime) via a runtime flag. 5574 5575Fixed a problem where aliased control methods could not access objects 5576properly. The proper scope within the namespace was not initialized 5577(transferred to the target of the aliased method) before executing the 5578target method. 5579 5580Fixed a potential race condition on internal object deletion on the return 5581object in AcpiEvaluateObject. 5582 5583Integrated a fix for resource descriptors where both _MEM and _MTP were 5584being extracted instead of just _MEM. (i.e. bitmask was incorrectly too 5585wide, 0x0F instead of 0x03.) 5586 5587Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, preventing a 5588fault in some cases. 5589 5590Updated Notify() values for debug statements in evmisc.c 5591 5592Return proper status from AcpiUtMutexInitialize, not just simply AE_OK. 5593 5594Code and Data Size: Current and previous core subsystem library sizes are 5595shown below. These are the code and data sizes for the acpica.lib produced 5596by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5597any ACPI driver or OSPM code. The debug version of the code includes the 5598debug output trace mechanism and has a much larger code and data size. Note 5599that these values will vary depending on the efficiency of the compiler and 5600the compiler options used during generation. 5601 5602 Previous Release: 5603 5604 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 5605 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 5606 Current Release: 5607 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total 5608 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total 5609 5610---------------------------------------- 561111 March 2004. Summary of changes for version 20040311: 5612 56131) ACPI CA Core Subsystem: 5614 5615Fixed a problem where errors occurring during the parse phase of control 5616method execution did not abort cleanly. For example, objects created and 5617installed in the namespace were not deleted. This caused all subsequent 5618invocations of the method to return the AE_ALREADY_EXISTS exception. 5619 5620Implemented a mechanism to force a control method to "Serialized" execution 5621if the method attempts to create namespace objects. (The root of the 5622AE_ALREADY_EXISTS problem.) 5623 5624Implemented support for the predefined _OSI "internal" control method. 5625Initial supported strings are "Linux", "Windows 2000", "Windows 2001", and 5626"Windows 2001.1", and can be easily upgraded for new strings as necessary. 5627This feature will allow "other" operating systems to execute the fully 5628tested, "Windows" code path through the ASL code 5629 5630Global Lock Support: Now allows multiple acquires and releases with any 5631internal thread. Removed concept of "owning thread" for this special mutex. 5632 5633Fixed two functions that were inappropriately declaring large objects on the 5634CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage during 5635method execution considerably. 5636 5637Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the 5638S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT. 5639 5640Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs 5641defined on the machine. 5642 5643Implemented two runtime options: One to force all control method execution 5644to "Serialized" to mimic Windows behavior, another to disable _OSI support 5645if it causes problems on a given machine. 5646 5647Code and Data Size: Current and previous core subsystem library sizes are 5648shown below. These are the code and data sizes for the acpica.lib produced 5649by the Microsoft Visual C++ 6.0 compiler, and these values do not include 5650any ACPI driver or OSPM code. The debug version of the code includes the 5651debug output trace mechanism and has a much larger code and data size. Note 5652that these values will vary depending on the efficiency of the compiler and 5653the compiler options used during generation. 5654 5655 Previous Release: 5656 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 5657 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 5658 Current Release: 5659 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total 5660 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total 5661 56622) iASL Compiler/Disassembler: 5663 5664Fixed an array size problem for FreeBSD that would cause the compiler to 5665fault. 5666 5667---------------------------------------- 566820 February 2004. Summary of changes for version 20040220: 5669 5670 56711) ACPI CA Core Subsystem: 5672 5673Implemented execution of _SxD methods for Device objects in the 5674GetObjectInfo interface. 5675 5676Fixed calls to _SST method to pass the correct arguments. 5677 5678Added a call to _SST on wake to restore to "working" state. 5679 5680Check for End-Of-Buffer failure case in the WalkResources interface. 5681 5682Integrated fix for 64-bit alignment issue in acglobal.h by moving two 5683structures to the beginning of the file. 5684 5685After wake, clear GPE status register(s) before enabling GPEs. 5686 5687After wake, clear/enable power button. (Perhaps we should clear/enable all 5688fixed events upon wake.) 5689 5690Fixed a couple of possible memory leaks in the Namespace manager. 5691 5692Integrated latest acnetbsd.h file. 5693 5694---------------------------------------- 569511 February 2004. Summary of changes for version 20040211: 5696 5697 56981) ACPI CA Core Subsystem: 5699 5700Completed investigation and implementation of the call-by-reference 5701mechanism for control method arguments. 5702 5703Fixed a problem where a store of an object into an indexed package could 5704fail if the store occurs within a different method than the method that 5705created the package. 5706 5707Fixed a problem where the ToDecimal operator could return incorrect results. 5708 5709Fixed a problem where the CopyObject operator could fail on some of the more 5710obscure objects (e.g., Reference objects.) 5711 5712Improved the output of the Debug object to display buffer, package, and 5713index objects. 5714 5715Fixed a problem where constructs of the form "RefOf (ArgX)" did not return 5716the expected result. 5717 5718Added permanent ACPI_REPORT_ERROR macros for all instances of the 5719ACPI_AML_INTERNAL exception. 5720 5721Integrated latest version of acfreebsd.h 5722 5723---------------------------------------- 572416 January 2004. Summary of changes for version 20040116: 5725 5726The purpose of this release is primarily to update the copyright years in 5727each module, thus causing a huge number of diffs. There are a few small 5728functional changes, however. 5729 57301) ACPI CA Core Subsystem: 5731 5732Improved error messages when there is a problem finding one or more of the 5733required base ACPI tables 5734 5735Reintroduced the definition of APIC_HEADER in actbl.h 5736 5737Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h) 5738 5739Removed extraneous reference to NewObj in dsmthdat.c 5740 57412) iASL compiler 5742 5743Fixed a problem introduced in December that disabled the correct disassembly 5744of Resource Templates 5745 5746 5747---------------------------------------- 574803 December 2003. Summary of changes for version 20031203: 5749 57501) ACPI CA Core Subsystem: 5751 5752Changed the initialization of Operation Regions during subsystem 5753init to perform two entire walks of the ACPI namespace; The first 5754to initialize the regions themselves, the second to execute the 5755_REG methods. This fixed some interdependencies across _REG 5756methods found on some machines. 5757 5758Fixed a problem where a Store(Local0, Local1) could simply update 5759the object reference count, and not create a new copy of the 5760object if the Local1 is uninitialized. 5761 5762Implemented support for the _SST reserved method during sleep 5763transitions. 5764 5765Implemented support to clear the SLP_TYP and SLP_EN bits when 5766waking up, this is apparently required by some machines. 5767 5768When sleeping, clear the wake status only if SleepState is not S5. 5769 5770Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect 5771pointer arithmetic advanced a string pointer too far. 5772 5773Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer 5774could be returned if the requested table has not been loaded. 5775 5776Within the support for IRQ resources, restructured the handling of 5777the active and edge/level bits. 5778 5779Fixed a few problems in AcpiPsxExecute() where memory could be 5780leaked under certain error conditions. 5781 5782Improved error messages for the cases where the ACPI mode could 5783not be entered. 5784 5785Code and Data Size: Current and previous core subsystem library 5786sizes are shown below. These are the code and data sizes for the 5787acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 5788these values do not include any ACPI driver or OSPM code. The 5789debug version of the code includes the debug output trace 5790mechanism and has a much larger code and data size. Note that 5791these values will vary depending on the efficiency of the compiler 5792and the compiler options used during generation. 5793 5794 Previous Release (20031029): 5795 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 5796 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 5797 Current Release: 5798 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total 5799 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total 5800 58012) iASL Compiler/Disassembler: 5802 5803Implemented a fix for the iASL disassembler where a bad index was 5804generated. This was most noticeable on 64-bit platforms 5805 5806 5807---------------------------------------- 580829 October 2003. Summary of changes for version 20031029: 5809 58101) ACPI CA Core Subsystem: 5811 5812 5813Fixed a problem where a level-triggered GPE with an associated 5814_Lxx control method was incorrectly cleared twice. 5815 5816Fixed a problem with the Field support code where an access can 5817occur beyond the end-of-region if the field is non-aligned but 5818extends to the very end of the parent region (resulted in an 5819AE_AML_REGION_LIMIT exception.) 5820 5821Fixed a problem with ACPI Fixed Events where an RT Clock handler 5822would not get invoked on an RTC event. The RTC event bitmasks for 5823the PM1 registers were not being initialized properly. 5824 5825Implemented support for executing _STA and _INI methods for 5826Processor objects. Although this is currently not part of the 5827ACPI specification, there is existing ASL code that depends on the 5828init-time execution of these methods. 5829 5830Implemented and deployed a GetDescriptorName function to decode 5831the various types of internal descriptors. Guards against null 5832descriptors during debug output also. 5833 5834Implemented and deployed a GetNodeName function to extract the 4- 5835character namespace node name. This function simplifies the debug 5836and error output, as well as guarding against null pointers during 5837output. 5838 5839Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to 5840simplify the debug and error output of 64-bit integers. This 5841macro replaces the HIDWORD and LODWORD macros for dumping these 5842integers. 5843 5844Updated the implementation of the Stall() operator to only call 5845AcpiOsStall(), and also return an error if the operand is larger 5846than 255. This preserves the required behavior of not 5847relinquishing the processor, as would happen if AcpiOsSleep() was 5848called for "long stalls". 5849 5850Constructs of the form "Store(LocalX,LocalX)" where LocalX is not 5851initialized are now treated as NOOPs. 5852 5853Cleaned up a handful of warnings during 64-bit generation. 5854 5855Fixed a reported error where and incorrect GPE number was passed 5856to the GPE dispatch handler. This value is only used for error 5857output, however. Used this opportunity to clean up and streamline 5858the GPE dispatch code. 5859 5860Code and Data Size: Current and previous core subsystem library 5861sizes are shown below. These are the code and data sizes for the 5862acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 5863these values do not include any ACPI driver or OSPM code. The 5864 5865debug version of the code includes the debug output trace 5866mechanism and has a much larger code and data size. Note that 5867these values will vary depending on the efficiency of the compiler 5868and the compiler options used during generation. 5869 5870 Previous Release (20031002): 5871 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 5872 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 5873 Current Release: 5874 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total 5875 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total 5876 5877 58782) iASL Compiler/Disassembler: 5879 5880Updated the iASL compiler to return an error if the operand to the 5881Stall() operator is larger than 255. 5882 5883 5884---------------------------------------- 588502 October 2003. Summary of changes for version 20031002: 5886 5887 58881) ACPI CA Core Subsystem: 5889 5890Fixed a problem with Index Fields where the index was not 5891incremented for fields that require multiple writes to the 5892index/data registers (Fields that are wider than the data 5893register.) 5894 5895Fixed a problem with all Field objects where a write could go 5896beyond the end-of-field if the field was larger than the access 5897granularity and therefore required multiple writes to complete the 5898request. An extra write beyond the end of the field could happen 5899inadvertently. 5900 5901Fixed a problem with Index Fields where a BUFFER_OVERFLOW error 5902would incorrectly be returned if the width of the Data Register 5903was larger than the specified field access width. 5904 5905Completed fixes for LoadTable() and Unload() and verified their 5906operation. Implemented full support for the "DdbHandle" object 5907throughout the ACPI CA subsystem. 5908 5909Implemented full support for the MADT and ECDT tables in the ACPI 5910CA header files. Even though these tables are not directly 5911consumed by ACPI CA, the header definitions are useful for ACPI 5912device drivers. 5913 5914Integrated resource descriptor fixes posted to the Linux ACPI 5915list. This included checks for minimum descriptor length, and 5916support for trailing NULL strings within descriptors that have 5917optional string elements. 5918 5919Code and Data Size: Current and previous core subsystem library 5920sizes are shown below. These are the code and data sizes for the 5921acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 5922these values do not include any ACPI driver or OSPM code. The 5923debug version of the code includes the debug output trace 5924mechanism and has a much larger code and data size. Note that 5925these values will vary depending on the efficiency of the compiler 5926and the compiler options used during generation. 5927 5928 Previous Release (20030918): 5929 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 5930 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 5931 Current Release: 5932 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total 5933 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total 5934 5935 59362) iASL Compiler: 5937 5938Implemented detection of non-ASCII characters within the input 5939source ASL file. This catches attempts to compile binary (AML) 5940files early in the compile, with an informative error message. 5941 5942Fixed a problem where the disassembler would fault if the output 5943filename could not be generated or if the output file could not be 5944opened. 5945 5946---------------------------------------- 594718 September 2003. Summary of changes for version 20030918: 5948 5949 59501) ACPI CA Core Subsystem: 5951 5952Found and fixed a longstanding problem with the late execution of 5953the various deferred AML opcodes (such as Operation Regions, 5954Buffer Fields, Buffers, and Packages). If the name string 5955specified for the name of the new object placed the object in a 5956scope other than the current scope, the initialization/execution 5957of the opcode failed. The solution to this problem was to 5958implement a mechanism where the late execution of such opcodes 5959does not attempt to lookup/create the name a second time in an 5960incorrect scope. This fixes the "region size computed 5961incorrectly" problem. 5962 5963Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a 5964Global Lock AE_BAD_PARAMETER error. 5965 5966Fixed several 64-bit issues with prototypes, casting and data 5967types. 5968 5969Removed duplicate prototype from acdisasm.h 5970 5971Fixed an issue involving EC Operation Region Detach (Shaohua Li) 5972 5973Code and Data Size: Current and previous core subsystem library 5974sizes are shown below. These are the code and data sizes for the 5975acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 5976these values do not include any ACPI driver or OSPM code. The 5977debug version of the code includes the debug output trace 5978mechanism and has a much larger code and data size. Note that 5979these values will vary depending on the efficiency of the compiler 5980and the compiler options used during generation. 5981 5982 Previous Release: 5983 5984 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 5985 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 5986 Current Release: 5987 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total 5988 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total 5989 5990 59912) Linux: 5992 5993Fixed the AcpiOsSleep implementation in osunixxf.c to pass the 5994correct sleep time in seconds. 5995 5996---------------------------------------- 599714 July 2003. Summary of changes for version 20030619: 5998 59991) ACPI CA Core Subsystem: 6000 6001Parse SSDTs in order discovered, as opposed to reverse order 6002(Hrvoje Habjanic) 6003 6004Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas 6005Klausner, 6006 Nate Lawson) 6007 6008 60092) Linux: 6010 6011Dynamically allocate SDT list (suggested by Andi Kleen) 6012 6013proc function return value cleanups (Andi Kleen) 6014 6015Correctly handle NMI watchdog during long stalls (Andrew Morton) 6016 6017Make it so acpismp=force works (reported by Andrew Morton) 6018 6019 6020---------------------------------------- 602119 June 2003. Summary of changes for version 20030619: 6022 60231) ACPI CA Core Subsystem: 6024 6025Fix To/FromBCD, eliminating the need for an arch-specific #define. 6026 6027Do not acquire a semaphore in the S5 shutdown path. 6028 6029Fix ex_digits_needed for 0. (Takayoshi Kochi) 6030 6031Fix sleep/stall code reversal. (Andi Kleen) 6032 6033Revert a change having to do with control method calling 6034semantics. 6035 60362) Linux: 6037 6038acpiphp update (Takayoshi Kochi) 6039 6040Export acpi_disabled for sonypi (Stelian Pop) 6041 6042Mention acpismp=force in config help 6043 6044Re-add acpitable.c and acpismp=force. This improves backwards 6045 6046compatibility and also cleans up the code to a significant degree. 6047 6048Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge) 6049 6050---------------------------------------- 605122 May 2003. Summary of changes for version 20030522: 6052 60531) ACPI CA Core Subsystem: 6054 6055Found and fixed a reported problem where an AE_NOT_FOUND error 6056occurred occasionally during _BST evaluation. This turned out to 6057be an Owner ID allocation issue where a called method did not get 6058a new ID assigned to it. Eventually, (after 64k calls), the Owner 6059ID UINT16 would wraparound so that the ID would be the same as the 6060caller's and the called method would delete the caller's 6061namespace. 6062 6063Implemented extended error reporting for control methods that are 6064aborted due to a run-time exception. Output includes the exact 6065AML instruction that caused the method abort, a dump of the method 6066locals and arguments at the time of the abort, and a trace of all 6067nested control method calls. 6068 6069Modified the interpreter to allow the creation of buffers of zero 6070length from the AML code. Implemented new code to ensure that no 6071attempt is made to actually allocate a memory buffer (of length 6072zero) - instead, a simple buffer object with a NULL buffer pointer 6073and length zero is created. A warning is no longer issued when 6074the AML attempts to create a zero-length buffer. 6075 6076Implemented a workaround for the "leading asterisk issue" in 6077_HIDs, _UIDs, and _CIDs in the AML interpreter. One leading 6078asterisk is automatically removed if present in any HID, UID, or 6079CID strings. The iASL compiler will still flag this asterisk as 6080an error, however. 6081 6082Implemented full support for _CID methods that return a package of 6083multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface 6084now additionally returns a device _CID list if present. This 6085required a change to the external interface in order to pass an 6086ACPI_BUFFER object as a parameter since the _CID list is of 6087variable length. 6088 6089Fixed a problem with the new AE_SAME_HANDLER exception where 6090handler initialization code did not know about this exception. 6091 6092Code and Data Size: Current and previous core subsystem library 6093sizes are shown below. These are the code and data sizes for the 6094acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and 6095these values do not include any ACPI driver or OSPM code. The 6096debug version of the code includes the debug output trace 6097mechanism and has a much larger code and data size. Note that 6098these values will vary depending on the efficiency of the compiler 6099and the compiler options used during generation. 6100 6101 Previous Release (20030509): 6102 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 6103 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 6104 Current Release: 6105 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total 6106 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total 6107 6108 61092) Linux: 6110 6111Fixed a bug in which we would reinitialize the ACPI interrupt 6112after it was already working, thus disabling all ACPI and the IRQs 6113for any other device sharing the interrupt. (Thanks to Stian 6114Jordet) 6115 6116Toshiba driver update (John Belmonte) 6117 6118Return only 0 or 1 for our interrupt handler status (Andrew 6119Morton) 6120 6121 61223) iASL Compiler: 6123 6124Fixed a reported problem where multiple (nested) ElseIf() 6125statements were not handled correctly by the compiler, resulting 6126in incorrect warnings and incorrect AML code. This was a problem 6127in both the ASL parser and the code generator. 6128 6129 61304) Documentation: 6131 6132Added changes to existing interfaces, new exception codes, and new 6133text concerning reference count object management versus garbage 6134collection. 6135 6136---------------------------------------- 613709 May 2003. Summary of changes for version 20030509. 6138 6139 61401) ACPI CA Core Subsystem: 6141 6142Changed the subsystem initialization sequence to hold off 6143installation of address space handlers until the hardware has been 6144initialized and the system has entered ACPI mode. This is because 6145the installation of space handlers can cause _REG methods to be 6146run. Previously, the _REG methods could potentially be run before 6147ACPI mode was enabled. 6148 6149Fixed some memory leak issues related to address space handler and 6150notify handler installation. There were some problems with the 6151reference count mechanism caused by the fact that the handler 6152objects are shared across several namespace objects. 6153 6154Fixed a reported problem where reference counts within the 6155namespace were not properly updated when named objects created by 6156method execution were deleted. 6157 6158Fixed a reported problem where multiple SSDTs caused a deletion 6159issue during subsystem termination. Restructured the table data 6160structures to simplify the linked lists and the related code. 6161 6162Fixed a problem where the table ID associated with secondary 6163tables (SSDTs) was not being propagated into the namespace objects 6164created by those tables. This would only present a problem for 6165tables that are unloaded at run-time, however. 6166 6167Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE 6168type as the length parameter (instead of UINT32). 6169 6170Solved a long-standing problem where an ALREADY_EXISTS error 6171appears on various systems. This problem could happen when there 6172are multiple PCI_Config operation regions under a single PCI root 6173bus. This doesn't happen very frequently, but there are some 6174systems that do this in the ASL. 6175 6176Fixed a reported problem where the internal DeleteNode function 6177was incorrectly handling the case where a namespace node was the 6178first in the parent's child list, and had additional peers (not 6179the only child, but first in the list of children.) 6180 6181Code and Data Size: Current core subsystem library sizes are shown 6182below. These are the code and data sizes for the acpica.lib 6183produced by the Microsoft Visual C++ 6.0 compiler, and these 6184values do not include any ACPI driver or OSPM code. The debug 6185version of the code includes the debug output trace mechanism and 6186has a much larger code and data size. Note that these values will 6187vary depending on the efficiency of the compiler and the compiler 6188options used during generation. 6189 6190 Previous Release 6191 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 6192 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 6193 Current Release: 6194 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total 6195 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total 6196 6197 61982) Linux: 6199 6200Allow ":" in OS override string (Ducrot Bruno) 6201 6202Kobject fix (Greg KH) 6203 6204 62053 iASL Compiler/Disassembler: 6206 6207Fixed a problem in the generation of the C source code files (AML 6208is emitted in C source statements for BIOS inclusion) where the 6209Ascii dump that appears within a C comment at the end of each line 6210could cause a compile time error if the AML sequence happens to 6211have an open comment or close comment sequence embedded. 6212 6213 6214---------------------------------------- 621524 April 2003. Summary of changes for version 20030424. 6216 6217 62181) ACPI CA Core Subsystem: 6219 6220Support for big-endian systems has been implemented. Most of the 6221support has been invisibly added behind big-endian versions of the 6222ACPI_MOVE_* macros. 6223 6224Fixed a problem in AcpiHwDisableGpeBlock() and 6225AcpiHwClearGpeBlock() where an incorrect offset was passed to the 6226low level hardware write routine. The offset parameter was 6227actually eliminated from the low level read/write routines because 6228they had become obsolete. 6229 6230Fixed a problem where a handler object was deleted twice during 6231the removal of a fixed event handler. 6232 6233 62342) Linux: 6235 6236A fix for SMP systems with link devices was contributed by 6237 6238Compaq's Dan Zink. 6239 6240(2.5) Return whether we handled the interrupt in our IRQ handler. 6241(Linux ISRs no longer return void, so we can propagate the handler 6242return value from the ACPI CA core back to the OS.) 6243 6244 6245 62463) Documentation: 6247 6248The ACPI CA Programmer Reference has been updated to reflect new 6249interfaces and changes to existing interfaces. 6250 6251---------------------------------------- 625228 March 2003. Summary of changes for version 20030328. 6253 62541) ACPI CA Core Subsystem: 6255 6256The GPE Block Device support has been completed. New interfaces 6257are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event 6258interfaces (enable, disable, clear, getstatus) have been split 6259into separate interfaces for Fixed Events and General Purpose 6260Events (GPEs) in order to support GPE Block Devices properly. 6261 6262Fixed a problem where the error message "Failed to acquire 6263semaphore" would appear during operations on the embedded 6264controller (EC). 6265 6266Code and Data Size: Current core subsystem library sizes are shown 6267below. These are the code and data sizes for the acpica.lib 6268produced by the Microsoft Visual C++ 6.0 compiler, and these 6269values do not include any ACPI driver or OSPM code. The debug 6270version of the code includes the debug output trace mechanism and 6271has a much larger code and data size. Note that these values will 6272vary depending on the efficiency of the compiler and the compiler 6273options used during generation. 6274 6275 Previous Release 6276 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 6277 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 6278 Current Release: 6279 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total 6280 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total 6281 6282 6283---------------------------------------- 628428 February 2003. Summary of changes for version 20030228. 6285 6286 62871) ACPI CA Core Subsystem: 6288 6289The GPE handling and dispatch code has been completely overhauled 6290in preparation for support of GPE Block Devices (ID ACPI0006). 6291This affects internal data structures and code only; there should 6292be no differences visible externally. One new file has been 6293added, evgpeblk.c 6294 6295The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only 6296fields that are used to determine the GPE block lengths. The 6297REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address 6298structures are ignored. This is per the ACPI specification but it 6299isn't very clear. The full 256 Block 0/1 GPEs are now supported 6300(the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128). 6301 6302In the SCI interrupt handler, removed the read of the PM1_CONTROL 6303register to look at the SCI_EN bit. On some machines, this read 6304causes an SMI event and greatly slows down SCI events. (This may 6305in fact be the cause of slow battery status response on some 6306systems.) 6307 6308Fixed a problem where a store of a NULL string to a package object 6309could cause the premature deletion of the object. This was seen 6310during execution of the battery _BIF method on some systems, 6311resulting in no battery data being returned. 6312 6313Added AcpiWalkResources interface to simplify parsing of resource 6314lists. 6315 6316Code and Data Size: Current core subsystem library sizes are shown 6317below. These are the code and data sizes for the acpica.lib 6318produced by the Microsoft Visual C++ 6.0 compiler, and these 6319values do not include any ACPI driver or OSPM code. The debug 6320version of the code includes the debug output trace mechanism and 6321has a much larger code and data size. Note that these values will 6322vary depending on the efficiency of the compiler and the compiler 6323options used during generation. 6324 6325 Previous Release 6326 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 6327 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 6328 Current Release: 6329 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total 6330 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total 6331 6332 63332) Linux 6334 6335S3 fixes (Ole Rohne) 6336 6337Update ACPI PHP driver with to use new acpi_walk_resource API 6338(Bjorn Helgaas) 6339 6340Add S4BIOS support (Pavel Machek) 6341 6342Map in entire table before performing checksum (John Stultz) 6343 6344Expand the mem= cmdline to allow the specification of reserved and 6345ACPI DATA blocks (Pavel Machek) 6346 6347Never use ACPI on VISWS 6348 6349Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez) 6350 6351Revert a change that allowed P_BLK lengths to be 4 or 5. This is 6352causing us to think that some systems support C2 when they really 6353don't. 6354 6355Do not count processor objects for non-present CPUs (Thanks to 6356Dominik Brodowski) 6357 6358 63593) iASL Compiler: 6360 6361Fixed a problem where ASL include files could not be found and 6362opened. 6363 6364Added support for the _PDC reserved name. 6365 6366 6367---------------------------------------- 636822 January 2003. Summary of changes for version 20030122. 6369 6370 63711) ACPI CA Core Subsystem: 6372 6373Added a check for constructs of the form: Store (Local0, Local0) 6374where Local0 is not initialized. Apparently, some BIOS 6375programmers believe that this is a NOOP. Since this store doesn't 6376do anything anyway, the new prototype behavior will ignore this 6377error. This is a case where we can relax the strict checking in 6378the interpreter in the name of compatibility. 6379 6380 63812) Linux 6382 6383The AcpiSrc Source Conversion Utility has been released with the 6384Linux package for the first time. This is the utility that is 6385used to convert the ACPI CA base source code to the Linux version. 6386 6387(Both) Handle P_BLK lengths shorter than 6 more gracefully 6388 6389(Both) Move more headers to include/acpi, and delete an unused 6390header. 6391 6392(Both) Move drivers/acpi/include directory to include/acpi 6393 6394(Both) Boot functions don't use cmdline, so don't pass it around 6395 6396(Both) Remove include of unused header (Adrian Bunk) 6397 6398(Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since 6399the 6400former now also includes the latter, acpiphp.h only needs the one, 6401now. 6402 6403(2.5) Make it possible to select method of bios restoring after S3 6404resume. [=> no more ugly ifdefs] (Pavel Machek) 6405 6406(2.5) Make proc write interfaces work (Pavel Machek) 6407 6408(2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski) 6409 6410(2.5) Break out ACPI Perf code into its own module, under cpufreq 6411(Dominik Brodowski) 6412 6413(2.4) S4BIOS support (Ducrot Bruno) 6414 6415(2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio 6416Visinoni) 6417 6418 64193) iASL Compiler: 6420 6421Added support to disassemble SSDT and PSDTs. 6422 6423Implemented support to obtain SSDTs from the Windows registry if 6424available. 6425 6426 6427---------------------------------------- 642809 January 2003. Summary of changes for version 20030109. 6429 64301) ACPI CA Core Subsystem: 6431 6432Changed the behavior of the internal Buffer-to-String conversion 6433function. The current ACPI specification states that the contents 6434of the buffer are "converted to a string of two-character 6435hexadecimal numbers, each separated by a space". Unfortunately, 6436this definition is not backwards compatible with existing ACPI 1.0 6437implementations (although the behavior was not defined in the ACPI 64381.0 specification). The new behavior simply copies data from the 6439buffer to the string until a null character is found or the end of 6440the buffer is reached. The new String object is always null 6441terminated. This problem was seen during the generation of _BIF 6442battery data where incorrect strings were returned for battery 6443type, etc. This will also require an errata to the ACPI 6444specification. 6445 6446Renamed all instances of NATIVE_UINT and NATIVE_INT to 6447ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively. 6448 6449Copyright in all module headers (both Linux and non-Linux) has be 6450updated to 2003. 6451 6452Code and Data Size: Current core subsystem library sizes are shown 6453below. These are the code and data sizes for the acpica.lib 6454produced by the Microsoft Visual C++ 6.0 compiler, and these 6455values do not include any ACPI driver or OSPM code. The debug 6456version of the code includes the debug output trace mechanism and 6457has a much larger code and data size. Note that these values will 6458vary depending on the efficiency of the compiler and the compiler 6459options used during generation. 6460 6461 Previous Release 6462 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 6463 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 6464 Current Release: 6465 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 6466 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 6467 6468 64692) Linux 6470 6471Fixed an oops on module insertion/removal (Matthew Tippett) 6472 6473(2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante) 6474 6475(2.5) Replace pr_debug (Randy Dunlap) 6476 6477(2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski) 6478 6479(Both) Eliminate spawning of thread from timer callback, in favor 6480of schedule_work() 6481 6482(Both) Show Lid status in /proc (Zdenek OGAR Skalak) 6483 6484(Both) Added define for Fixed Function HW region (Matthew Wilcox) 6485 6486(Both) Add missing statics to button.c (Pavel Machek) 6487 6488Several changes have been made to the source code translation 6489utility that generates the Linux Code in order to make the code 6490more "Linux-like": 6491 6492All typedefs on structs and unions have been removed in keeping 6493with the Linux coding style. 6494 6495Removed the non-Linux SourceSafe module revision number from each 6496module header. 6497 6498Completed major overhaul of symbols to be lowercased for linux. 6499Doubled the number of symbols that are lowercased. 6500 6501Fixed a problem where identifiers within procedure headers and 6502within quotes were not fully lower cased (they were left with a 6503starting capital.) 6504 6505Some C macros whose only purpose is to allow the generation of 16- 6506bit code are now completely removed in the Linux code, increasing 6507readability and maintainability. 6508 6509---------------------------------------- 6510 651112 December 2002. Summary of changes for version 20021212. 6512 6513 65141) ACPI CA Core Subsystem: 6515 6516Fixed a problem where the creation of a zero-length AML Buffer 6517would cause a fault. 6518 6519Fixed a problem where a Buffer object that pointed to a static AML 6520buffer (in an ACPI table) could inadvertently be deleted, causing 6521memory corruption. 6522 6523Fixed a problem where a user buffer (passed in to the external 6524ACPI CA interfaces) could be overwritten if the buffer was too 6525small to complete the operation, causing memory corruption. 6526 6527Fixed a problem in the Buffer-to-String conversion code where a 6528string of length one was always returned, regardless of the size 6529of the input Buffer object. 6530 6531Removed the NATIVE_CHAR data type across the entire source due to 6532lack of need and lack of consistent use. 6533 6534Code and Data Size: Current core subsystem library sizes are shown 6535below. These are the code and data sizes for the acpica.lib 6536produced by the Microsoft Visual C++ 6.0 compiler, and these 6537values do not include any ACPI driver or OSPM code. The debug 6538version of the code includes the debug output trace mechanism and 6539has a much larger code and data size. Note that these values will 6540vary depending on the efficiency of the compiler and the compiler 6541options used during generation. 6542 6543 Previous Release 6544 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 6545 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 6546 Current Release: 6547 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total 6548 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total 6549 6550 6551---------------------------------------- 655205 December 2002. Summary of changes for version 20021205. 6553 65541) ACPI CA Core Subsystem: 6555 6556Fixed a problem where a store to a String or Buffer object could 6557cause corruption of the DSDT if the object type being stored was 6558the same as the target object type and the length of the object 6559being stored was equal to or smaller than the original (existing) 6560target object. This was seen to cause corruption of battery _BIF 6561buffers if the _BIF method modified the buffer on the fly. 6562 6563Fixed a problem where an internal error was generated if a control 6564method invocation was used in an OperationRegion, Buffer, or 6565Package declaration. This was caused by the deferred parsing of 6566the control method and thus the deferred creation of the internal 6567method object. The solution to this problem was to create the 6568internal method object at the moment the method is encountered in 6569the first pass - so that subsequent references to the method will 6570able to obtain the required parameter count and thus properly 6571parse the method invocation. This problem presented itself as an 6572AE_AML_INTERNAL during the pass 1 parse phase during table load. 6573 6574Fixed a problem where the internal String object copy routine did 6575not always allocate sufficient memory for the target String object 6576and caused memory corruption. This problem was seen to cause 6577"Allocation already present in list!" errors as memory allocation 6578became corrupted. 6579 6580Implemented a new function for the evaluation of namespace objects 6581that allows the specification of the allowable return object 6582types. This simplifies a lot of code that checks for a return 6583object of one or more specific objects returned from the 6584evaluation (such as _STA, etc.) This may become and external 6585function if it would be useful to ACPI-related drivers. 6586 6587Completed another round of prefixing #defines with "ACPI_" for 6588clarity. 6589 6590Completed additional code restructuring to allow more modular 6591linking for iASL compiler and AcpiExec. Several files were split 6592creating new files. New files: nsparse.c dsinit.c evgpe.c 6593 6594Implemented an abort mechanism to terminate an executing control 6595method via the AML debugger. This feature is useful for debugging 6596control methods that depend (wait) for specific hardware 6597responses. 6598 6599Code and Data Size: Current core subsystem library sizes are shown 6600below. These are the code and data sizes for the acpica.lib 6601produced by the Microsoft Visual C++ 6.0 compiler, and these 6602values do not include any ACPI driver or OSPM code. The debug 6603version of the code includes the debug output trace mechanism and 6604has a much larger code and data size. Note that these values will 6605vary depending on the efficiency of the compiler and the compiler 6606options used during generation. 6607 6608 Previous Release 6609 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 6610 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 6611 Current Release: 6612 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total 6613 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total 6614 6615 66162) iASL Compiler/Disassembler 6617 6618Fixed a compiler code generation problem for "Interrupt" Resource 6619Descriptors. If specified in the ASL, the optional "Resource 6620Source Index" and "Resource Source" fields were not inserted into 6621the correct location within the AML resource descriptor, creating 6622an invalid descriptor. 6623 6624Fixed a disassembler problem for "Interrupt" resource descriptors. 6625The optional "Resource Source Index" and "Resource Source" fields 6626were ignored. 6627 6628 6629---------------------------------------- 663022 November 2002. Summary of changes for version 20021122. 6631 6632 66331) ACPI CA Core Subsystem: 6634 6635Fixed a reported problem where an object stored to a Method Local 6636or Arg was not copied to a new object during the store - the 6637object pointer was simply copied to the Local/Arg. This caused 6638all subsequent operations on the Local/Arg to also affect the 6639original source of the store operation. 6640 6641Fixed a problem where a store operation to a Method Local or Arg 6642was not completed properly if the Local/Arg contained a reference 6643(from RefOf) to a named field. The general-purpose store-to- 6644namespace-node code is now used so that this case is handled 6645automatically. 6646 6647Fixed a problem where the internal object copy routine would cause 6648a protection fault if the object being copied was a Package and 6649contained either 1) a NULL package element or 2) a nested sub- 6650package. 6651 6652Fixed a problem with the GPE initialization that resulted from an 6653ambiguity in the ACPI specification. One section of the 6654specification states that both the address and length of the GPE 6655block must be zero if the block is not supported. Another section 6656implies that only the address need be zero if the block is not 6657supported. The code has been changed so that both the address and 6658the length must be non-zero to indicate a valid GPE block (i.e., 6659if either the address or the length is zero, the GPE block is 6660invalid.) 6661 6662Code and Data Size: Current core subsystem library sizes are shown 6663below. These are the code and data sizes for the acpica.lib 6664produced by the Microsoft Visual C++ 6.0 compiler, and these 6665values do not include any ACPI driver or OSPM code. The debug 6666version of the code includes the debug output trace mechanism and 6667has a much larger code and data size. Note that these values will 6668vary depending on the efficiency of the compiler and the compiler 6669options used during generation. 6670 6671 Previous Release 6672 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 6673 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 6674 Current Release: 6675 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 6676 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total 6677 6678 66792) Linux 6680 6681Cleaned up EC driver. Exported an external EC read/write 6682interface. By going through this, other drivers (most notably 6683sonypi) will be able to serialize access to the EC. 6684 6685 66863) iASL Compiler/Disassembler 6687 6688Implemented support to optionally generate include files for both 6689ASM and C (the -i switch). This simplifies BIOS development by 6690automatically creating include files that contain external 6691declarations for the symbols that are created within the 6692 6693(optionally generated) ASM and C AML source files. 6694 6695 6696---------------------------------------- 669715 November 2002. Summary of changes for version 20021115. 6698 66991) ACPI CA Core Subsystem: 6700 6701Fixed a memory leak problem where an error during resolution of 6702 6703method arguments during a method invocation from another method 6704failed to cleanup properly by deleting all successfully resolved 6705argument objects. 6706 6707Fixed a problem where the target of the Index() operator was not 6708correctly constructed if the source object was a package. This 6709problem has not been detected because the use of a target operand 6710with Index() is very rare. 6711 6712Fixed a problem with the Index() operator where an attempt was 6713made to delete the operand objects twice. 6714 6715Fixed a problem where an attempt was made to delete an operand 6716twice during execution of the CondRefOf() operator if the target 6717did not exist. 6718 6719Implemented the first of perhaps several internal create object 6720functions that create and initialize a specific object type. This 6721consolidates duplicated code wherever the object is created, thus 6722shrinking the size of the subsystem. 6723 6724Implemented improved debug/error messages for errors that occur 6725during nested method invocations. All executing method pathnames 6726are displayed (with the error) as the call stack is unwound - thus 6727simplifying debug. 6728 6729Fixed a problem introduced in the 10/02 release that caused 6730premature deletion of a buffer object if a buffer was used as an 6731ASL operand where an integer operand is required (Thus causing an 6732implicit object conversion from Buffer to Integer.) The change in 6733the 10/02 release was attempting to fix a memory leak (albeit 6734incorrectly.) 6735 6736Code and Data Size: Current core subsystem library sizes are shown 6737below. These are the code and data sizes for the acpica.lib 6738produced by the Microsoft Visual C++ 6.0 compiler, and these 6739values do not include any ACPI driver or OSPM code. The debug 6740version of the code includes the debug output trace mechanism and 6741has a much larger code and data size. Note that these values will 6742vary depending on the efficiency of the compiler and the compiler 6743options used during generation. 6744 6745 Previous Release 6746 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 6747 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 6748 Current Release: 6749 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total 6750 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total 6751 6752 67532) Linux 6754 6755Changed the implementation of the ACPI semaphores to use down() 6756instead of down_interruptable(). It is important that the 6757execution of ACPI control methods not be interrupted by signals. 6758Methods must run to completion, or the system may be left in an 6759unknown/unstable state. 6760 6761Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set. 6762(Shawn Starr) 6763 6764 67653) iASL Compiler/Disassembler 6766 6767 6768Changed the default location of output files. All output files 6769are now placed in the current directory by default instead of in 6770the directory of the source file. This change may affect some 6771existing makefiles, but it brings the behavior of the compiler in 6772line with other similar tools. The location of the output files 6773can be overridden with the -p command line switch. 6774 6775 6776---------------------------------------- 677711 November 2002. Summary of changes for version 20021111. 6778 6779 67800) ACPI Specification 2.0B is released and is now available at: 6781http://www.acpi.info/index.html 6782 6783 67841) ACPI CA Core Subsystem: 6785 6786Implemented support for the ACPI 2.0 SMBus Operation Regions. 6787This includes the early detection and handoff of the request to 6788the SMBus region handler (avoiding all of the complex field 6789support code), and support for the bidirectional return packet 6790from an SMBus write operation. This paves the way for the 6791development of SMBus drivers in each host operating system. 6792 6793Fixed a problem where the semaphore WAIT_FOREVER constant was 6794defined as 32 bits, but must be 16 bits according to the ACPI 6795specification. This had the side effect of causing ASL 6796Mutex/Event timeouts even though the ASL code requested a wait 6797forever. Changed all internal references to the ACPI timeout 6798parameter to 16 bits to prevent future problems. Changed the name 6799of WAIT_FOREVER to ACPI_WAIT_FOREVER. 6800 6801Code and Data Size: Current core subsystem library sizes are shown 6802below. These are the code and data sizes for the acpica.lib 6803produced by the Microsoft Visual C++ 6.0 compiler, and these 6804values do not include any ACPI driver or OSPM code. The debug 6805version of the code includes the debug output trace mechanism and 6806has a much larger code and data size. Note that these values will 6807vary depending on the efficiency of the compiler and the compiler 6808options used during generation. 6809 6810 Previous Release 6811 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 6812 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 6813 Current Release: 6814 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total 6815 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total 6816 6817 68182) Linux 6819 6820Module loading/unloading fixes (John Cagle) 6821 6822 68233) iASL Compiler/Disassembler 6824 6825Added support for the SMBBlockProcessCall keyword (ACPI 2.0) 6826 6827Implemented support for the disassembly of all SMBus protocol 6828keywords (SMBQuick, SMBWord, etc.) 6829 6830---------------------------------------- 683101 November 2002. Summary of changes for version 20021101. 6832 6833 68341) ACPI CA Core Subsystem: 6835 6836Fixed a problem where platforms that have a GPE1 block but no GPE0 6837block were not handled correctly. This resulted in a "GPE 6838overlap" error message. GPE0 is no longer required. 6839 6840Removed code added in the previous release that inserted nodes 6841into the namespace in alphabetical order. This caused some side- 6842effects on various machines. The root cause of the problem is 6843still under investigation since in theory, the internal ordering 6844of the namespace nodes should not matter. 6845 6846 6847Enhanced error reporting for the case where a named object is not 6848found during control method execution. The full ACPI namepath 6849(name reference) of the object that was not found is displayed in 6850this case. 6851 6852Note: as a result of the overhaul of the namespace object types in 6853the previous release, the namespace nodes for the predefined 6854scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE 6855instead of ACPI_TYPE_ANY. This simplifies the namespace 6856management code but may affect code that walks the namespace tree 6857looking for specific object types. 6858 6859Code and Data Size: Current core subsystem library sizes are shown 6860below. These are the code and data sizes for the acpica.lib 6861produced by the Microsoft Visual C++ 6.0 compiler, and these 6862values do not include any ACPI driver or OSPM code. The debug 6863version of the code includes the debug output trace mechanism and 6864has a much larger code and data size. Note that these values will 6865vary depending on the efficiency of the compiler and the compiler 6866options used during generation. 6867 6868 Previous Release 6869 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 6870 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 6871 Current Release: 6872 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total 6873 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total 6874 6875 68762) Linux 6877 6878Fixed a problem introduced in the previous release where the 6879Processor and Thermal objects were not recognized and installed in 6880/proc. This was related to the scope type change described above. 6881 6882 68833) iASL Compiler/Disassembler 6884 6885Implemented the -g option to get all of the required ACPI tables 6886from the registry and save them to files (Windows version of the 6887compiler only.) The required tables are the FADT, FACS, and DSDT. 6888 6889Added ACPI table checksum validation during table disassembly in 6890order to catch corrupted tables. 6891 6892 6893---------------------------------------- 689422 October 2002. Summary of changes for version 20021022. 6895 68961) ACPI CA Core Subsystem: 6897 6898Implemented a restriction on the Scope operator that the target 6899must already exist in the namespace at the time the operator is 6900encountered (during table load or method execution). In other 6901words, forward references are not allowed and Scope() cannot 6902create a new object. This changes the previous behavior where the 6903interpreter would create the name if not found. This new behavior 6904correctly enables the search-to-root algorithm during namespace 6905lookup of the target name. Because of this upsearch, this fixes 6906the known Compaq _SB_.OKEC problem and makes both the AML 6907interpreter and iASL compiler compatible with other ACPI 6908implementations. 6909 6910Completed a major overhaul of the internal ACPI object types for 6911the ACPI Namespace and the associated operand objects. Many of 6912these types had become obsolete with the introduction of the two- 6913pass namespace load. This cleanup simplifies the code and makes 6914the entire namespace load mechanism much clearer and easier to 6915understand. 6916 6917Improved debug output for tracking scope opening/closing to help 6918diagnose scoping issues. The old scope name as well as the new 6919scope name are displayed. Also improved error messages for 6920problems with ASL Mutex objects and error messages for GPE 6921problems. 6922 6923Cleaned up the namespace dump code, removed obsolete code. 6924 6925All string output (for all namespace/object dumps) now uses the 6926common ACPI string output procedure which handles escapes properly 6927and does not emit non-printable characters. 6928 6929Fixed some issues with constants in the 64-bit version of the 6930local C library (utclib.c) 6931 6932 69332) Linux 6934 6935EC Driver: No longer attempts to acquire the Global Lock at 6936interrupt level. 6937 6938 69393) iASL Compiler/Disassembler 6940 6941Implemented ACPI 2.0B grammar change that disallows all Type 1 and 69422 opcodes outside of a control method. This means that the 6943"executable" operators (versus the "namespace" operators) cannot 6944be used at the table level; they can only be used within a control 6945method. 6946 6947Implemented the restriction on the Scope() operator where the 6948target must already exist in the namespace at the time the 6949operator is encountered (during ASL compilation). In other words, 6950forward references are not allowed and Scope() cannot create a new 6951object. This makes the iASL compiler compatible with other ACPI 6952implementations and makes the Scope() implementation adhere to the 6953ACPI specification. 6954 6955Fixed a problem where namepath optimization for the Alias operator 6956was optimizing the wrong path (of the two namepaths.) This caused 6957a "Missing alias link" error message. 6958 6959Fixed a problem where an "unknown reserved name" warning could be 6960incorrectly generated for names like "_SB" when the trailing 6961underscore is not used in the original ASL. 6962 6963Fixed a problem where the reserved name check did not handle 6964NamePaths with multiple NameSegs correctly. The first nameseg of 6965the NamePath was examined instead of the last NameSeg. 6966 6967 6968---------------------------------------- 6969 697002 October 2002. Summary of changes for this release. 6971 6972 69731) ACPI CA Core Subsystem version 20021002: 6974 6975Fixed a problem where a store/copy of a string to an existing 6976string did not always set the string length properly in the String 6977object. 6978 6979Fixed a reported problem with the ToString operator where the 6980behavior was identical to the ToHexString operator instead of just 6981simply converting a raw buffer to a string data type. 6982 6983Fixed a problem where CopyObject and the other "explicit" 6984conversion operators were not updating the internal namespace node 6985type as part of the store operation. 6986 6987Fixed a memory leak during implicit source operand conversion 6988where the original object was not deleted if it was converted to a 6989new object of a different type. 6990 6991Enhanced error messages for all problems associated with namespace 6992lookups. Common procedure generates and prints the lookup name as 6993well as the formatted status. 6994 6995Completed implementation of a new design for the Alias support 6996within the namespace. The existing design did not handle the case 6997where a new object was assigned to one of the two names due to the 6998use of an explicit conversion operator, resulting in the two names 6999pointing to two different objects. The new design simply points 7000the Alias name to the original name node - not to the object. 7001This results in a level of indirection that must be handled in the 7002name resolution mechanism. 7003 7004Code and Data Size: Current core subsystem library sizes are shown 7005below. These are the code and data sizes for the acpica.lib 7006produced by the Microsoft Visual C++ 6.0 compiler, and these 7007values do not include any ACPI driver or OSPM code. The debug 7008version of the code includes the debug output trace mechanism and 7009has a larger code and data size. Note that these values will vary 7010depending on the efficiency of the compiler and the compiler 7011options used during generation. 7012 7013 Previous Release 7014 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 7015 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 7016 Current Release: 7017 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total 7018 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total 7019 7020 70212) Linux 7022 7023Initialize thermal driver's timer before it is used. (Knut 7024Neumann) 7025 7026Allow handling negative celsius values. (Kochi Takayoshi) 7027 7028Fix thermal management and make trip points. R/W (Pavel Machek) 7029 7030Fix /proc/acpi/sleep. (P. Christeas) 7031 7032IA64 fixes. (David Mosberger) 7033 7034Fix reversed logic in blacklist code. (Sergio Monteiro Basto) 7035 7036Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik 7037Brodowski) 7038 7039 70403) iASL Compiler/Disassembler 7041 7042Clarified some warning/error messages. 7043 7044 7045---------------------------------------- 704618 September 2002. Summary of changes for this release. 7047 7048 70491) ACPI CA Core Subsystem version 20020918: 7050 7051Fixed a reported problem with reference chaining (via the Index() 7052and RefOf() operators) in the ObjectType() and SizeOf() operators. 7053The definition of these operators includes the dereferencing of 7054all chained references to return information on the base object. 7055 7056Fixed a problem with stores to indexed package elements - the 7057existing code would not complete the store if an "implicit 7058conversion" was not performed. In other words, if the existing 7059object (package element) was to be replaced completely, the code 7060didn't handle this case. 7061 7062Relaxed typechecking on the ASL "Scope" operator to allow the 7063target name to refer to an object of type Integer, String, or 7064Buffer, in addition to the scoping object types (Device, 7065predefined Scopes, Processor, PowerResource, and ThermalZone.) 7066This allows existing AML code that has workarounds for a bug in 7067Windows to function properly. A warning is issued, however. This 7068affects both the AML interpreter and the iASL compiler. Below is 7069an example of this type of ASL code: 7070 7071 Name(DEB,0x00) 7072 Scope(DEB) 7073 { 7074 7075Fixed some reported problems with 64-bit integer support in the 7076local implementation of C library functions (clib.c) 7077 7078 70792) Linux 7080 7081Use ACPI fix map region instead of IOAPIC region, since it is 7082undefined in non-SMP. 7083 7084Ensure that the SCI has the proper polarity and trigger, even on 7085systems that do not have an interrupt override entry in the MADT. 7086 70872.5 big driver reorganization (Pat Mochel) 7088 7089Use early table mapping code from acpitable.c (Andi Kleen) 7090 7091New blacklist entries (Andi Kleen) 7092 7093Blacklist improvements. Split blacklist code out into a separate 7094file. Move checking the blacklist to very early. Previously, we 7095would use ACPI tables, and then halfway through init, check the 7096blacklist -- too late. Now, it's early enough to completely fall- 7097back to non-ACPI. 7098 7099 71003) iASL Compiler/Disassembler version 20020918: 7101 7102Fixed a problem where the typechecking code didn't know that an 7103alias could point to a method. In other words, aliases were not 7104being dereferenced during typechecking. 7105 7106 7107---------------------------------------- 710829 August 2002. Summary of changes for this release. 7109 71101) ACPI CA Core Subsystem Version 20020829: 7111 7112If the target of a Scope() operator already exists, it must be an 7113object type that actually opens a scope -- such as a Device, 7114Method, Scope, etc. This is a fatal runtime error. Similar error 7115check has been added to the iASL compiler also. 7116 7117Tightened up the namespace load to disallow multiple names in the 7118same scope. This previously was allowed if both objects were of 7119the same type. (i.e., a lookup was the same as entering a new 7120name). 7121 7122 71232) Linux 7124 7125Ensure that the ACPI interrupt has the proper trigger and 7126polarity. 7127 7128local_irq_disable is extraneous. (Matthew Wilcox) 7129 7130Make "acpi=off" actually do what it says, and not use the ACPI 7131interpreter *or* the tables. 7132 7133Added arch-neutral support for parsing SLIT and SRAT tables (Kochi 7134Takayoshi) 7135 7136 71373) iASL Compiler/Disassembler Version 20020829: 7138 7139Implemented namepath optimization for name declarations. For 7140example, a declaration like "Method (\_SB_.ABCD)" would get 7141optimized to "Method (ABCD)" if the declaration is within the 7142\_SB_ scope. This optimization is in addition to the named 7143reference path optimization first released in the previous 7144version. This would seem to complete all possible optimizations 7145for namepaths within the ASL/AML. 7146 7147If the target of a Scope() operator already exists, it must be an 7148object type that actually opens a scope -- such as a Device, 7149Method, Scope, etc. 7150 7151Implemented a check and warning for unreachable code in the same 7152block below a Return() statement. 7153 7154Fixed a problem where the listing file was not generated if the 7155compiler aborted if the maximum error count was exceeded (200). 7156 7157Fixed a problem where the typechecking of method return values was 7158broken. This includes the check for a return value when the 7159method is invoked as a TermArg (a return value is expected.) 7160 7161Fixed a reported problem where EOF conditions during a quoted 7162string or comment caused a fault. 7163 7164 7165---------------------------------------- 716615 August 2002. Summary of changes for this release. 7167 71681) ACPI CA Core Subsystem Version 20020815: 7169 7170Fixed a reported problem where a Store to a method argument that 7171contains a reference did not perform the indirect store correctly. 7172This problem was created during the conversion to the new 7173reference object model - the indirect store to a method argument 7174code was not updated to reflect the new model. 7175 7176Reworked the ACPI mode change code to better conform to ACPI 2.0, 7177handle corner cases, and improve code legibility (Kochi Takayoshi) 7178 7179Fixed a problem with the pathname parsing for the carat (^) 7180prefix. The heavy use of the carat operator by the new namepath 7181optimization in the iASL compiler uncovered a problem with the AML 7182interpreter handling of this prefix. In the case where one or 7183more carats precede a single nameseg, the nameseg was treated as 7184standalone and the search rule (to root) was inadvertently 7185applied. This could cause both the iASL compiler and the 7186interpreter to find the wrong object or to miss the error that 7187should occur if the object does not exist at that exact pathname. 7188 7189Found and fixed the problem where the HP Pavilion DSDT would not 7190load. This was a relatively minor tweak to the table loading code 7191(a problem caused by the unexpected encounter with a method 7192invocation not within a control method), but it does not solve the 7193overall issue of the execution of AML code at the table level. 7194This investigation is still ongoing. 7195 7196Code and Data Size: Current core subsystem library sizes are shown 7197below. These are the code and data sizes for the acpica.lib 7198produced by the Microsoft Visual C++ 6.0 compiler, and these 7199values do not include any ACPI driver or OSPM code. The debug 7200version of the code includes the debug output trace mechanism and 7201has a larger code and data size. Note that these values will vary 7202depending on the efficiency of the compiler and the compiler 7203options used during generation. 7204 7205 Previous Release 7206 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 7207 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 7208 Current Release: 7209 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total 7210 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total 7211 7212 72132) Linux 7214 7215Remove redundant slab.h include (Brad Hards) 7216 7217Fix several bugs in thermal.c (Herbert Nachtnebel) 7218 7219Make CONFIG_ACPI_BOOT work properly (Pavel Machek) 7220 7221Change acpi_system_suspend to use updated irq functions (Pavel 7222Machek) 7223 7224Export acpi_get_firmware_table (Matthew Wilcox) 7225 7226Use proper root proc entry for ACPI (Kochi Takayoshi) 7227 7228Fix early-boot table parsing (Bjorn Helgaas) 7229 7230 72313) iASL Compiler/Disassembler 7232 7233Reworked the compiler options to make them more consistent and to 7234use two-letter options where appropriate. We were running out of 7235sensible letters. This may break some makefiles, so check the 7236current options list by invoking the compiler with no parameters. 7237 7238Completed the design and implementation of the ASL namepath 7239optimization option for the compiler. This option optimizes all 7240references to named objects to the shortest possible path. The 7241first attempt tries to utilize a single nameseg (4 characters) and 7242the "search-to-root" algorithm used by the interpreter. If that 7243cannot be used (because either the name is not in the search path 7244or there is a conflict with another object with the same name), 7245the pathname is optimized using the carat prefix (usually a 7246shorter string than specifying the entire path from the root.) 7247 7248Implemented support to obtain the DSDT from the Windows registry 7249(when the disassembly option is specified with no input file). 7250Added this code as the implementation for AcpiOsTableOverride in 7251the Windows OSL. Migrated the 16-bit code (used in the AcpiDump 7252utility) to scan memory for the DSDT to the AcpiOsTableOverride 7253function in the DOS OSL to make the disassembler truly OS 7254independent. 7255 7256Implemented a new option to disassemble and compile in one step. 7257When used without an input filename, this option will grab the 7258DSDT from the local machine, disassemble it, and compile it in one 7259step. 7260 7261Added a warning message for invalid escapes (a backslash followed 7262by any character other than the allowable escapes). This catches 7263the quoted string error "\_SB_" (which should be "\\_SB_" ). 7264 7265Also, there are numerous instances in the ACPI specification where 7266this error occurs. 7267 7268Added a compiler option to disable all optimizations. This is 7269basically the "compatibility mode" because by using this option, 7270the AML code will come out exactly the same as other ASL 7271compilers. 7272 7273Added error messages for incorrectly ordered dependent resource 7274functions. This includes: missing EndDependentFn macro at end of 7275dependent resource list, nested dependent function macros (both 7276start and end), and missing StartDependentFn macro. These are 7277common errors that should be caught at compile time. 7278 7279Implemented _OSI support for the disassembler and compiler. _OSI 7280must be included in the namespace for proper disassembly (because 7281the disassembler must know the number of arguments.) 7282 7283Added an "optimization" message type that is optional (off by 7284default). This message is used for all optimizations - including 7285constant folding, integer optimization, and namepath optimization. 7286 7287---------------------------------------- 728825 July 2002. Summary of changes for this release. 7289 7290 72911) ACPI CA Core Subsystem Version 20020725: 7292 7293The AML Disassembler has been enhanced to produce compilable ASL 7294code and has been integrated into the iASL compiler (see below) as 7295well as the single-step disassembly for the AML debugger and the 7296disassembler for the AcpiDump utility. All ACPI 2.0A opcodes, 7297resource templates and macros are fully supported. The 7298disassembler has been tested on over 30 different AML files, 7299producing identical AML when the resulting disassembled ASL file 7300is recompiled with the same ASL compiler. 7301 7302Modified the Resource Manager to allow zero interrupts and zero 7303dma channels during the GetCurrentResources call. This was 7304causing problems on some platforms. 7305 7306Added the AcpiOsRedirectOutput interface to the OSL to simplify 7307output redirection for the AcpiOsPrintf and AcpiOsVprintf 7308interfaces. 7309 7310Code and Data Size: Current core subsystem library sizes are shown 7311below. These are the code and data sizes for the acpica.lib 7312produced by the Microsoft Visual C++ 6.0 compiler, and these 7313values do not include any ACPI driver or OSPM code. The debug 7314version of the code includes the debug output trace mechanism and 7315has a larger code and data size. Note that these values will vary 7316depending on the efficiency of the compiler and the compiler 7317options used during generation. 7318 7319 Previous Release 7320 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 7321 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 7322 Current Release: 7323 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total 7324 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total 7325 7326 73272) Linux 7328 7329Fixed a panic in the EC driver (Dominik Brodowski) 7330 7331Implemented checksum of the R/XSDT itself during Linux table scan 7332(Richard Schaal) 7333 7334 73353) iASL compiler 7336 7337The AML disassembler is integrated into the compiler. The "-d" 7338option invokes the disassembler to completely disassemble an 7339input AML file, producing as output a text ASL file with the 7340extension ".dsl" (to avoid name collisions with existing .asl 7341source files.) A future enhancement will allow the disassembler 7342to obtain the BIOS DSDT from the registry under Windows. 7343 7344Fixed a problem with the VendorShort and VendorLong resource 7345descriptors where an invalid AML sequence was created. 7346 7347Implemented a fix for BufferData term in the ASL parser. It was 7348inadvertently defined twice, allowing invalid syntax to pass and 7349causing reduction conflicts. 7350 7351Fixed a problem where the Ones opcode could get converted to a 7352value of zero if "Ones" was used where a byte, word or dword value 7353was expected. The 64-bit value is now truncated to the correct 7354size with the correct value. 7355 7356 7357 7358---------------------------------------- 735902 July 2002. Summary of changes for this release. 7360 7361 73621) ACPI CA Core Subsystem Version 20020702: 7363 7364The Table Manager code has been restructured to add several new 7365features. Tables that are not required by the core subsystem 7366(other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer 7367validated in any way and are returned from AcpiGetFirmwareTable if 7368requested. The AcpiOsTableOverride interface is now called for 7369each table that is loaded by the subsystem in order to allow the 7370host to override any table it chooses. Previously, only the DSDT 7371could be overridden. Added one new files, tbrsdt.c and 7372tbgetall.c. 7373 7374Fixed a problem with the conversion of internal package objects to 7375external objects (when a package is returned from a control 7376method.) The return buffer length was set to zero instead of the 7377proper length of the package object. 7378 7379Fixed a reported problem with the use of the RefOf and DeRefOf 7380operators when passing reference arguments to control methods. A 7381new type of Reference object is used internally for references 7382produced by the RefOf operator. 7383 7384Added additional error messages in the Resource Manager to explain 7385AE_BAD_DATA errors when they occur during resource parsing. 7386 7387Split the AcpiEnableSubsystem into two primitives to enable a 7388finer granularity initialization sequence. These two calls should 7389be called in this order: AcpiEnableSubsystem (flags), 7390AcpiInitializeObjects (flags). The flags parameter remains the 7391same. 7392 7393 73942) Linux 7395 7396Updated the ACPI utilities module to understand the new style of 7397fully resolved package objects that are now returned from the core 7398subsystem. This eliminates errors of the form: 7399 7400 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT] 7401 acpi_utils-0430 [145] acpi_evaluate_reference: 7402 Invalid element in package (not a device reference) 7403 7404The method evaluation utility uses the new buffer allocation 7405scheme instead of calling AcpiEvaluate Object twice. 7406 7407Added support for ECDT. This allows the use of the Embedded 7408 7409Controller before the namespace has been fully initialized, which 7410is necessary for ACPI 2.0 support, and for some laptops to 7411initialize properly. (Laptops using ECDT are still rare, so only 7412limited testing was performed of the added functionality.) 7413 7414Fixed memory leaks in the EC driver. 7415 7416Eliminated a brittle code structure in acpi_bus_init(). 7417 7418Eliminated the acpi_evaluate() helper function in utils.c. It is 7419no longer needed since acpi_evaluate_object can optionally 7420allocate memory for the return object. 7421 7422Implemented fix for keyboard hang when getting battery readings on 7423some systems (Stephen White) 7424 7425PCI IRQ routing update (Dominik Brodowski) 7426 7427Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC 7428support 7429 7430---------------------------------------- 743111 June 2002. Summary of changes for this release. 7432 7433 74341) ACPI CA Core Subsystem Version 20020611: 7435 7436Fixed a reported problem where constants such as Zero and One 7437appearing within _PRT packages were not handled correctly within 7438the resource manager code. Originally reported against the ASL 7439compiler because the code generator now optimizes integers to 7440their minimal AML representation (i.e. AML constants if possible.) 7441The _PRT code now handles all AML constant opcodes correctly 7442(Zero, One, Ones, Revision). 7443 7444Fixed a problem with the Concatenate operator in the AML 7445interpreter where a buffer result object was incorrectly marked as 7446not fully evaluated, causing a run-time error of AE_AML_INTERNAL. 7447 7448All package sub-objects are now fully resolved before they are 7449returned from the external ACPI interfaces. This means that name 7450strings are resolved to object handles, and constant operators 7451(Zero, One, Ones, Revision) are resolved to Integers. 7452 7453Implemented immediate resolution of the AML Constant opcodes 7454(Zero, One, Ones, Revision) to Integer objects upon detection 7455within the AML stream. This has simplified and reduced the 7456generated code size of the subsystem by eliminating about 10 7457switch statements for these constants (which previously were 7458contained in Reference objects.) The complicating issues are that 7459the Zero opcode is used as a "placeholder" for unspecified 7460optional target operands and stores to constants are defined to be 7461no-ops. 7462 7463Code and Data Size: Current core subsystem library sizes are shown 7464below. These are the code and data sizes for the acpica.lib 7465produced by the Microsoft Visual C++ 6.0 compiler, and these 7466values do not include any ACPI driver or OSPM code. The debug 7467version of the code includes the debug output trace mechanism and 7468has a larger code and data size. Note that these values will vary 7469depending on the efficiency of the compiler and the compiler 7470options used during generation. 7471 7472 Previous Release 7473 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 7474 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 7475 Current Release: 7476 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total 7477 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total 7478 7479 74802) Linux 7481 7482 7483Added preliminary support for obtaining _TRA data for PCI root 7484bridges (Bjorn Helgaas). 7485 7486 74873) iASL Compiler Version X2046: 7488 7489Fixed a problem where the "_DDN" reserved name was defined to be a 7490control method with one argument. There are no arguments, and 7491_DDN does not have to be a control method. 7492 7493Fixed a problem with the Linux version of the compiler where the 7494source lines printed with error messages were the wrong lines. 7495This turned out to be the "LF versus CR/LF" difference between 7496Windows and Unix. This appears to be the longstanding issue 7497concerning listing output and error messages. 7498 7499Fixed a problem with the Linux version of compiler where opcode 7500names within error messages were wrong. This was caused by a 7501slight difference in the output of the Flex tool on Linux versus 7502Windows. 7503 7504Fixed a problem with the Linux compiler where the hex output files 7505contained some garbage data caused by an internal buffer overrun. 7506 7507 7508---------------------------------------- 750917 May 2002. Summary of changes for this release. 7510 7511 75121) ACPI CA Core Subsystem Version 20020517: 7513 7514Implemented a workaround to an BIOS bug discovered on the HP 7515OmniBook where the FADT revision number and the table size are 7516inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new 7517behavior is to fallback to using only the ACPI 1.0 fields of the 7518FADT if the table is too small to be a ACPI 2.0 table as claimed 7519by the revision number. Although this is a BIOS bug, this is a 7520case where the workaround is simple enough and with no side 7521effects, so it seemed prudent to add it. A warning message is 7522issued, however. 7523 7524Implemented minimum size checks for the fixed-length ACPI tables - 7525- the FADT and FACS, as well as consistency checks between the 7526revision number and the table size. 7527 7528Fixed a reported problem in the table override support where the 7529new table pointer was incorrectly treated as a physical address 7530instead of a logical address. 7531 7532Eliminated the use of the AE_AML_ERROR exception and replaced it 7533with more descriptive codes. 7534 7535Fixed a problem where an exception would occur if an ASL Field was 7536defined with no named Field Units underneath it (used by some 7537index fields). 7538 7539Code and Data Size: Current core subsystem library sizes are shown 7540below. These are the code and data sizes for the acpica.lib 7541produced by the Microsoft Visual C++ 6.0 compiler, and these 7542values do not include any ACPI driver or OSPM code. The debug 7543version of the code includes the debug output trace mechanism and 7544has a larger code and data size. Note that these values will vary 7545depending on the efficiency of the compiler and the compiler 7546options used during generation. 7547 7548 Previous Release 7549 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 7550 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 7551 Current Release: 7552 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total 7553 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total 7554 7555 7556 75572) Linux 7558 7559Much work done on ACPI init (MADT and PCI IRQ routing support). 7560(Paul D. and Dominik Brodowski) 7561 7562Fix PCI IRQ-related panic on boot (Sam Revitch) 7563 7564Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno) 7565 7566Fix "MHz" typo (Dominik Brodowski) 7567 7568Fix RTC year 2000 issue (Dominik Brodowski) 7569 7570Preclude multiple button proc entries (Eric Brunet) 7571 7572Moved arch-specific code out of include/platform/aclinux.h 7573 75743) iASL Compiler Version X2044: 7575 7576Implemented error checking for the string used in the EISAID macro 7577(Usually used in the definition of the _HID object.) The code now 7578strictly enforces the PnP format - exactly 7 characters, 3 7579uppercase letters and 4 hex digits. 7580 7581If a raw string is used in the definition of the _HID object 7582(instead of the EISAID macro), the string must contain all 7583alphanumeric characters (e.g., "*PNP0011" is not allowed because 7584of the asterisk.) 7585 7586Implemented checking for invalid use of ACPI reserved names for 7587most of the name creation operators (Name, Device, Event, Mutex, 7588OperationRegion, PowerResource, Processor, and ThermalZone.) 7589Previously, this check was only performed for control methods. 7590 7591Implemented an additional check on the Name operator to emit an 7592error if a reserved name that must be implemented in ASL as a 7593control method is used. We know that a reserved name must be a 7594method if it is defined with input arguments. 7595 7596The warning emitted when a namespace object reference is not found 7597during the cross reference phase has been changed into an error. 7598The "External" directive should be used for names defined in other 7599modules. 7600 7601 76024) Tools and Utilities 7603 7604The 16-bit tools (adump16 and aexec16) have been regenerated and 7605tested. 7606 7607Fixed a problem with the output of both acpidump and adump16 where 7608the indentation of closing parentheses and brackets was not 7609 7610aligned properly with the parent block. 7611 7612 7613---------------------------------------- 761403 May 2002. Summary of changes for this release. 7615 7616 76171) ACPI CA Core Subsystem Version 20020503: 7618 7619Added support a new OSL interface that allows the host operating 7620 7621system software to override the DSDT found in the firmware - 7622AcpiOsTableOverride. With this interface, the OSL can examine the 7623version of the firmware DSDT and replace it with a different one 7624if desired. 7625 7626Added new external interfaces for accessing ACPI registers from 7627device drivers and other system software - AcpiGetRegister and 7628AcpiSetRegister. This was simply an externalization of the 7629existing AcpiHwBitRegister interfaces. 7630 7631Fixed a regression introduced in the previous build where the 7632ASL/AML CreateField operator always returned an error, 7633"destination must be a NS Node". 7634 7635Extended the maximum time (before failure) to successfully enable 7636ACPI mode to 3 seconds. 7637 7638Code and Data Size: Current core subsystem library sizes are shown 7639below. These are the code and data sizes for the acpica.lib 7640produced by the Microsoft Visual C++ 6.0 compiler, and these 7641values do not include any ACPI driver or OSPM code. The debug 7642version of the code includes the debug output trace mechanism and 7643has a larger code and data size. Note that these values will vary 7644depending on the efficiency of the compiler and the compiler 7645options used during generation. 7646 7647 Previous Release 7648 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 7649 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 7650 Current Release: 7651 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total 7652 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total 7653 7654 76552) Linux 7656 7657Enhanced ACPI init code for SMP. We are now fully MPS and $PIR- 7658free. While 3 out of 4 of our in-house systems work fine, the last 7659one still hangs when testing the LAPIC timer. 7660 7661Renamed many files in 2.5 kernel release to omit "acpi_" from the 7662name. 7663 7664Added warning on boot for Presario 711FR. 7665 7666Sleep improvements (Pavel Machek) 7667 7668ACPI can now be built without CONFIG_PCI enabled. 7669 7670IA64: Fixed memory map functions (JI Lee) 7671 7672 76733) iASL Compiler Version X2043: 7674 7675Added support to allow the compiler to be integrated into the MS 7676VC++ development environment for one-button compilation of single 7677files or entire projects -- with error-to-source-line mapping. 7678 7679Implemented support for compile-time constant folding for the 7680Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0 7681specification. This allows the ASL writer to use expressions 7682instead of Integer/Buffer/String constants in terms that must 7683evaluate to constants at compile time and will also simplify the 7684emitted AML in any such sub-expressions that can be folded 7685(evaluated at compile-time.) This increases the size of the 7686compiler significantly because a portion of the ACPI CA AML 7687interpreter is included within the compiler in order to pre- 7688evaluate constant expressions. 7689 7690 7691Fixed a problem with the "Unicode" ASL macro that caused the 7692compiler to fault. (This macro is used in conjunction with the 7693_STR reserved name.) 7694 7695Implemented an AML opcode optimization to use the Zero, One, and 7696Ones opcodes where possible to further reduce the size of integer 7697constants and thus reduce the overall size of the generated AML 7698code. 7699 7700Implemented error checking for new reserved terms for ACPI version 77012.0A. 7702 7703Implemented the -qr option to display the current list of ACPI 7704reserved names known to the compiler. 7705 7706Implemented the -qc option to display the current list of ASL 7707operators that are allowed within constant expressions and can 7708therefore be folded at compile time if the operands are constants. 7709 7710 77114) Documentation 7712 7713Updated the Programmer's Reference for new interfaces, data types, 7714and memory allocation model options. 7715 7716Updated the iASL Compiler User Reference to apply new format and 7717add information about new features and options. 7718 7719---------------------------------------- 772019 April 2002. Summary of changes for this release. 7721 77221) ACPI CA Core Subsystem Version 20020419: 7723 7724The source code base for the Core Subsystem has been completely 7725cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit 7726versions. The Lint option files used are included in the 7727/acpi/generate/lint directory. 7728 7729Implemented enhanced status/error checking across the entire 7730Hardware manager subsystem. Any hardware errors (reported from 7731the OSL) are now bubbled up and will abort a running control 7732method. 7733 7734 7735Fixed a problem where the per-ACPI-table integer width (32 or 64) 7736was stored only with control method nodes, causing a fault when 7737non-control method code was executed during table loading. The 7738solution implemented uses a global variable to indicate table 7739width across the entire ACPI subsystem. Therefore, ACPI CA does 7740not support mixed integer widths across different ACPI tables 7741(DSDT, SSDT). 7742 7743Fixed a problem where NULL extended fields (X fields) in an ACPI 77442.0 ACPI FADT caused the table load to fail. Although the 7745existing ACPI specification is a bit fuzzy on this topic, the new 7746behavior is to fall back on a ACPI 1.0 field if the corresponding 7747ACPI 2.0 X field is zero (even though the table revision indicates 7748a full ACPI 2.0 table.) The ACPI specification will be updated to 7749clarify this issue. 7750 7751Fixed a problem with the SystemMemory operation region handler 7752where memory was always accessed byte-wise even if the AML- 7753specified access width was larger than a byte. This caused 7754problems on systems with memory-mapped I/O. Memory is now 7755accessed with the width specified. On systems that do not support 7756non-aligned transfers, a check is made to guarantee proper address 7757alignment before proceeding in order to avoid an AML-caused 7758alignment fault within the kernel. 7759 7760 7761Fixed a problem with the ExtendedIrq resource where only one byte 7762of the 4-byte Irq field was extracted. 7763 7764Fixed the AcpiExDigitsNeeded() procedure to support _UID. This 7765function was out of date and required a rewrite. 7766 7767Code and Data Size: Current core subsystem library sizes are shown 7768below. These are the code and data sizes for the acpica.lib 7769produced by the Microsoft Visual C++ 6.0 compiler, and these 7770values do not include any ACPI driver or OSPM code. The debug 7771version of the code includes the debug output trace mechanism and 7772has a larger code and data size. Note that these values will vary 7773depending on the efficiency of the compiler and the compiler 7774options used during generation. 7775 7776 Previous Release 7777 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 7778 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 7779 Current Release: 7780 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total 7781 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total 7782 7783 77842) Linux 7785 7786PCI IRQ routing fixes (Dominik Brodowski) 7787 7788 77893) iASL Compiler Version X2042: 7790 7791Implemented an additional compile-time error check for a field 7792unit whose size + minimum access width would cause a run-time 7793access beyond the end-of-region. Previously, only the field size 7794itself was checked. 7795 7796The Core subsystem and iASL compiler now share a common parse 7797object in preparation for compile-time evaluation of the type 77983/4/5 ASL operators. 7799 7800 7801---------------------------------------- 7802Summary of changes for this release: 03_29_02 7803 78041) ACPI CA Core Subsystem Version 20020329: 7805 7806Implemented support for late evaluation of TermArg operands to 7807Buffer and Package objects. This allows complex expressions to be 7808used in the declarations of these object types. 7809 7810Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI 78111.0, if the field was larger than 32 bits, it was returned as a 7812buffer - otherwise it was returned as an integer. In ACPI 2.0, 7813the field is returned as a buffer only if the field is larger than 781464 bits. The TableRevision is now considered when making this 7815conversion to avoid incompatibility with existing ASL code. 7816 7817Implemented logical addressing for AcpiOsGetRootPointer. This 7818allows an RSDP with either a logical or physical address. With 7819this support, the host OS can now override all ACPI tables with 7820one logical RSDP. Includes implementation of "typed" pointer 7821support to allow a common data type for both physical and logical 7822pointers internally. This required a change to the 7823AcpiOsGetRootPointer interface. 7824 7825Implemented the use of ACPI 2.0 Generic Address Structures for all 7826GPE, Fixed Event, and PM Timer I/O. This allows the use of memory 7827mapped I/O for these ACPI features. 7828 7829Initialization now ignores not only non-required tables (All 7830tables other than the FADT, FACS, DSDT, and SSDTs), but also does 7831not validate the table headers of unrecognized tables. 7832 7833Fixed a problem where a notify handler could only be 7834installed/removed on an object of type Device. All "notify" 7835 7836objects are now supported -- Devices, Processor, Power, and 7837Thermal. 7838 7839Removed most verbosity from the ACPI_DB_INFO debug level. Only 7840critical information is returned when this debug level is enabled. 7841 7842Code and Data Size: Current core subsystem library sizes are shown 7843below. These are the code and data sizes for the acpica.lib 7844produced by the Microsoft Visual C++ 6.0 compiler, and these 7845values do not include any ACPI driver or OSPM code. The debug 7846version of the code includes the debug output trace mechanism and 7847has a larger code and data size. Note that these values will vary 7848depending on the efficiency of the compiler and the compiler 7849options used during generation. 7850 7851 Previous Release 7852 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 7853 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 7854 Current Release: 7855 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total 7856 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total 7857 7858 78592) Linux: 7860 7861The processor driver (acpi_processor.c) now fully supports ACPI 78622.0-based processor performance control (e.g. Intel(R) 7863SpeedStep(TM) technology) Note that older laptops that only have 7864the Intel "applet" interface are not supported through this. The 7865'limit' and 'performance' interface (/proc) are fully functional. 7866[Note that basic policy for controlling performance state 7867transitions will be included in the next version of ospmd.] The 7868idle handler was modified to more aggressively use C2, and PIIX4 7869errata handling underwent a complete overhaul (big thanks to 7870Dominik Brodowski). 7871 7872Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR- 7873based devices in the ACPI namespace are now dynamically bound 7874(associated) with their PCI counterparts (e.g. PCI1->01:00.0). 7875This allows, among other things, ACPI to resolve bus numbers for 7876subordinate PCI bridges. 7877 7878Enhanced PCI IRQ routing to get the proper bus number for _PRT 7879entries defined underneath PCI bridges. 7880 7881Added IBM 600E to bad bios list due to invalid _ADR value for 7882PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing. 7883 7884In the process of adding full MADT support (e.g. IOAPIC) for IA32 7885(acpi.c, mpparse.c) -- stay tuned. 7886 7887Added back visual differentiation between fixed-feature and 7888control-method buttons in dmesg. Buttons are also subtyped (e.g. 7889button/power/PWRF) to simplify button identification. 7890 7891We no longer use -Wno-unused when compiling debug. Please ignore 7892any "_THIS_MODULE defined but not used" messages. 7893 7894Can now shut down the system using "magic sysrq" key. 7895 7896 78973) iASL Compiler version 2041: 7898 7899Fixed a problem where conversion errors for hex/octal/decimal 7900constants were not reported. 7901 7902Implemented a fix for the General Register template Address field. 7903This field was 8 bits when it should be 64. 7904 7905Fixed a problem where errors/warnings were no longer being emitted 7906within the listing output file. 7907 7908Implemented the ACPI 2.0A restriction on ACPI Table Signatures to 7909exactly 4 characters, alphanumeric only. 7910 7911 7912 7913 7914---------------------------------------- 7915Summary of changes for this release: 03_08_02 7916 7917 79181) ACPI CA Core Subsystem Version 20020308: 7919 7920Fixed a problem with AML Fields where the use of the "AccessAny" 7921keyword could cause an interpreter error due to attempting to read 7922or write beyond the end of the parent Operation Region. 7923 7924Fixed a problem in the SystemMemory Operation Region handler where 7925an attempt was made to map memory beyond the end of the region. 7926This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY" 7927errors on some Linux systems. 7928 7929Fixed a problem where the interpreter/namespace "search to root" 7930algorithm was not functioning for some object types. Relaxed the 7931internal restriction on the search to allow upsearches for all 7932external object types as well as most internal types. 7933 7934 79352) Linux: 7936 7937We now use safe_halt() macro versus individual calls to sti | hlt. 7938 7939Writing to the processor limit interface should now work. "echo 1" 7940will increase the limit, 2 will decrease, and 0 will reset to the 7941 7942default. 7943 7944 79453) ASL compiler: 7946 7947Fixed segfault on Linux version. 7948 7949 7950---------------------------------------- 7951Summary of changes for this release: 02_25_02 7952 79531) ACPI CA Core Subsystem: 7954 7955 7956Fixed a problem where the GPE bit masks were not initialized 7957properly, causing erratic GPE behavior. 7958 7959Implemented limited support for multiple calling conventions. The 7960code can be generated with either the VPL (variable parameter 7961list, or "C") convention, or the FPL (fixed parameter list, or 7962"Pascal") convention. The core subsystem is about 3.4% smaller 7963when generated with FPL. 7964 7965 79662) Linux 7967 7968Re-add some /proc/acpi/event functionality that was lost during 7969the rewrite 7970 7971Resolved issue with /proc events for fixed-feature buttons showing 7972up as the system device. 7973 7974Fixed checks on C2/C3 latencies to be inclusive of maximum values. 7975 7976Replaced AE_ERRORs in acpi_osl.c with more specific error codes. 7977 7978Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi" 7979 7980Fixed limit interface & usage to fix bugs with passive cooling 7981hysterisis. 7982 7983Restructured PRT support. 7984 7985 7986---------------------------------------- 7987Summary of changes for this label: 02_14_02 7988 7989 79901) ACPI CA Core Subsystem: 7991 7992Implemented support in AcpiLoadTable to allow loading of FACS and 7993FADT tables. 7994 7995Suport for the now-obsolete interim 0.71 64-bit ACPI tables has 7996been removed. All 64-bit platforms should be migrated to the ACPI 79972.0 tables. The actbl71.h header has been removed from the source 7998tree. 7999 8000All C macros defined within the subsystem have been prefixed with 8001"ACPI_" to avoid collision with other system include files. 8002 8003Removed the return value for the two AcpiOsPrint interfaces, since 8004it is never used and causes lint warnings for ignoring the return 8005value. 8006 8007Added error checking to all internal mutex acquire and release 8008calls. Although a failure from one of these interfaces is 8009probably a fatal system error, these checks will cause the 8010immediate abort of the currently executing method or interface. 8011 8012Fixed a problem where the AcpiSetCurrentResources interface could 8013fault. This was a side effect of the deployment of the new memory 8014allocation model. 8015 8016Fixed a couple of problems with the Global Lock support introduced 8017in the last major build. The "common" (1.0/2.0) internal FACS was 8018being overwritten with the FACS signature and clobbering the 8019Global Lock pointer. Also, the actual firmware FACS was being 8020unmapped after construction of the "common" FACS, preventing 8021access to the actual Global Lock field within it. The "common" 8022internal FACS is no longer installed as an actual ACPI table; it 8023is used simply as a global. 8024 8025Code and Data Size: Current core subsystem library sizes are shown 8026below. These are the code and data sizes for the acpica.lib 8027produced by the Microsoft Visual C++ 6.0 compiler, and these 8028values do not include any ACPI driver or OSPM code. The debug 8029version of the code includes the debug output trace mechanism and 8030has a larger code and data size. Note that these values will vary 8031depending on the efficiency of the compiler and the compiler 8032options used during generation. 8033 8034 Previous Release (02_07_01) 8035 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 8036 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 8037 Current Release: 8038 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total 8039 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total 8040 8041 80422) Linux 8043 8044Updated Linux-specific code for core macro and OSL interface 8045changes described above. 8046 8047Improved /proc/acpi/event. It now can be opened only once and has 8048proper poll functionality. 8049 8050Fixed and restructured power management (acpi_bus). 8051 8052Only create /proc "view by type" when devices of that class exist. 8053 8054Fixed "charging/discharging" bug (and others) in acpi_battery. 8055 8056Improved thermal zone code. 8057 8058 80593) ASL Compiler, version X2039: 8060 8061 8062Implemented the new compiler restriction on ASL String hex/octal 8063escapes to non-null, ASCII values. An error results if an invalid 8064value is used. (This will require an ACPI 2.0 specification 8065change.) 8066 8067AML object labels that are output to the optional C and ASM source 8068are now prefixed with both the ACPI table signature and table ID 8069to help guarantee uniqueness within a large BIOS project. 8070 8071 8072---------------------------------------- 8073Summary of changes for this label: 02_01_02 8074 80751) ACPI CA Core Subsystem: 8076 8077ACPI 2.0 support is complete in the entire Core Subsystem and the 8078ASL compiler. All new ACPI 2.0 operators are implemented and all 8079other changes for ACPI 2.0 support are complete. With 8080simultaneous code and data optimizations throughout the subsystem, 8081ACPI 2.0 support has been implemented with almost no additional 8082cost in terms of code and data size. 8083 8084Implemented a new mechanism for allocation of return buffers. If 8085the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will 8086be allocated on behalf of the caller. Consolidated all return 8087buffer validation and allocation to a common procedure. Return 8088buffers will be allocated via the primary OSL allocation interface 8089since it appears that a separate pool is not needed by most users. 8090If a separate pool is required for these buffers, the caller can 8091still use the original mechanism and pre-allocate the buffer(s). 8092 8093Implemented support for string operands within the DerefOf 8094operator. 8095 8096Restructured the Hardware and Event managers to be table driven, 8097simplifying the source code and reducing the amount of generated 8098code. 8099 8100Split the common read/write low-level ACPI register bitfield 8101procedure into a separate read and write, simplifying the code 8102considerably. 8103 8104Obsoleted the AcpiOsCallocate OSL interface. This interface was 8105used only a handful of times and didn't have enough critical mass 8106for a separate interface. Replaced with a common calloc procedure 8107in the core. 8108 8109Fixed a reported problem with the GPE number mapping mechanism 8110that allows GPE1 numbers to be non-contiguous with GPE0. 8111Reorganized the GPE information and shrunk a large array that was 8112originally large enough to hold info for all possible GPEs (256) 8113to simply large enough to hold all GPEs up to the largest GPE 8114number on the machine. 8115 8116Fixed a reported problem with resource structure alignment on 64- 8117bit platforms. 8118 8119Changed the AcpiEnableEvent and AcpiDisableEvent external 8120interfaces to not require any flags for the common case of 8121enabling/disabling a GPE. 8122 8123Implemented support to allow a "Notify" on a Processor object. 8124 8125Most TBDs in comments within the source code have been resolved 8126and eliminated. 8127 8128 8129Fixed a problem in the interpreter where a standalone parent 8130prefix (^) was not handled correctly in the interpreter and 8131debugger. 8132 8133Removed obsolete and unnecessary GPE save/restore code. 8134 8135Implemented Field support in the ASL Load operator. This allows a 8136table to be loaded from a named field, in addition to loading a 8137table directly from an Operation Region. 8138 8139Implemented timeout and handle support in the external Global Lock 8140interfaces. 8141 8142Fixed a problem in the AcpiDump utility where pathnames were no 8143longer being generated correctly during the dump of named objects. 8144 8145Modified the AML debugger to give a full display of if/while 8146predicates instead of just one AML opcode at a time. (The 8147predicate can have several nested ASL statements.) The old method 8148was confusing during single stepping. 8149 8150Code and Data Size: Current core subsystem library sizes are shown 8151below. These are the code and data sizes for the acpica.lib 8152produced by the Microsoft Visual C++ 6.0 compiler, and these 8153values do not include any ACPI driver or OSPM code. The debug 8154version of the code includes the debug output trace mechanism and 8155has a larger code and data size. Note that these values will vary 8156depending on the efficiency of the compiler and the compiler 8157options used during generation. 8158 8159 Previous Release (12_18_01) 8160 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 8161 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 8162 Current Release: 8163 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total 8164 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total 8165 81662) Linux 8167 8168 Implemented fix for PIIX reverse throttling errata (Processor 8169driver) 8170 8171Added new Limit interface (Processor and Thermal drivers) 8172 8173New thermal policy (Thermal driver) 8174 8175Many updates to /proc 8176 8177Battery "low" event support (Battery driver) 8178 8179Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers) 8180 8181IA32 - IA64 initialization unification, no longer experimental 8182 8183Menuconfig options redesigned 8184 81853) ASL Compiler, version X2037: 8186 8187Implemented several new output features to simplify integration of 8188AML code into firmware: 1) Output the AML in C source code with 8189labels for each named ASL object. The original ASL source code 8190is interleaved as C comments. 2) Output the AML in ASM source code 8191with labels and interleaved ASL source. 3) Output the AML in 8192raw hex table form, in either C or ASM. 8193 8194Implemented support for optional string parameters to the 8195LoadTable operator. 8196 8197Completed support for embedded escape sequences within string 8198literals. The compiler now supports all single character escapes 8199as well as the Octal and Hex escapes. Note: the insertion of a 8200null byte into a string literal (via the hex/octal escape) causes 8201the string to be immediately terminated. A warning is issued. 8202 8203Fixed a problem where incorrect AML was generated for the case 8204where an ASL namepath consists of a single parent prefix ( 8205 8206) with no trailing name segments. 8207 8208The compiler has been successfully generated with a 64-bit C 8209compiler. 8210 8211 8212 8213 8214---------------------------------------- 8215Summary of changes for this label: 12_18_01 8216 82171) Linux 8218 8219Enhanced blacklist with reason and severity fields. Any table's 8220signature may now be used to identify a blacklisted system. 8221 8222Call _PIC control method to inform the firmware which interrupt 8223model the OS is using. Turn on any disabled link devices. 8224 8225Cleaned up busmgr /proc error handling (Andreas Dilger) 8226 8227 2) ACPI CA Core Subsystem: 8228 8229Implemented ACPI 2.0 semantics for the "Break" operator (Exit from 8230while loop) 8231 8232Completed implementation of the ACPI 2.0 "Continue", 8233"ConcatenateResTemplate", "DataTableRegion", and "LoadTable" 8234operators. All new ACPI 2.0 operators are now implemented in both 8235the ASL compiler and the AML interpreter. The only remaining ACPI 82362.0 task is support for the String data type in the DerefOf 8237operator. Fixed a problem with AcquireMutex where the status code 8238was lost if the caller had to actually wait for the mutex. 8239 8240Increased the maximum ASL Field size from 64K bits to 4G bits. 8241 8242Completed implementation of the external Global Lock interfaces -- 8243AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and 8244Handler parameters were added. 8245 8246Completed another pass at removing warnings and issues when 8247compiling with 64-bit compilers. The code now compiles cleanly 8248with the Intel 64-bit C/C++ compiler. Most notably, the pointer 8249add and subtract (diff) macros have changed considerably. 8250 8251 8252Created and deployed a new ACPI_SIZE type that is 64-bits wide on 825364-bit platforms, 32-bits on all others. This type is used 8254wherever memory allocation and/or the C sizeof() operator is used, 8255and affects the OSL memory allocation interfaces AcpiOsAllocate 8256and AcpiOsCallocate. 8257 8258Implemented sticky user breakpoints in the AML debugger. 8259 8260Code and Data Size: Current core subsystem library sizes are shown 8261below. These are the code and data sizes for the acpica.lib 8262produced by the Microsoft Visual C++ 6.0 compiler, and these 8263values do not include any ACPI driver or OSPM code. The debug 8264version of the code includes the debug output trace mechanism and 8265has a larger code and data size. Note that these values will vary 8266depending on the efficiency of the compiler and the compiler 8267options used during generation. 8268 8269 Previous Release (12_05_01) 8270 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 8271 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 8272 Current Release: 8273 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total 8274 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total 8275 8276 3) ASL Compiler, version X2034: 8277 8278Now checks for (and generates an error if detected) the use of a 8279Break or Continue statement without an enclosing While statement. 8280 8281 8282Successfully generated the compiler with the Intel 64-bit C 8283compiler. 8284 8285 ---------------------------------------- 8286Summary of changes for this label: 12_05_01 8287 8288 1) ACPI CA Core Subsystem: 8289 8290The ACPI 2.0 CopyObject operator is fully implemented. This 8291operator creates a new copy of an object (and is also used to 8292bypass the "implicit conversion" mechanism of the Store operator.) 8293 8294The ACPI 2.0 semantics for the SizeOf operator are fully 8295implemented. The change is that performing a SizeOf on a 8296reference object causes an automatic dereference of the object to 8297tha actual value before the size is evaluated. This behavior was 8298undefined in ACPI 1.0. 8299 8300The ACPI 2.0 semantics for the Extended IRQ resource descriptor 8301have been implemented. The interrupt polarity and mode are now 8302independently set. 8303 8304Fixed a problem where ASL Constants (Zero, One, Ones, Revision) 8305appearing in Package objects were not properly converted to 8306integers when the internal Package was converted to an external 8307object (via the AcpiEvaluateObject interface.) 8308 8309Fixed a problem with the namespace object deletion mechanism for 8310objects created by control methods. There were two parts to this 8311problem: 1) Objects created during the initialization phase method 8312parse were not being deleted, and 2) The object owner ID mechanism 8313to track objects was broken. 8314 8315Fixed a problem where the use of the ASL Scope operator within a 8316control method would result in an invalid opcode exception. 8317 8318Fixed a problem introduced in the previous label where the buffer 8319length required for the _PRT structure was not being returned 8320correctly. 8321 8322Code and Data Size: Current core subsystem library sizes are shown 8323below. These are the code and data sizes for the acpica.lib 8324produced by the Microsoft Visual C++ 6.0 compiler, and these 8325values do not include any ACPI driver or OSPM code. The debug 8326version of the code includes the debug output trace mechanism and 8327has a larger code and data size. Note that these values will vary 8328depending on the efficiency of the compiler and the compiler 8329options used during generation. 8330 8331 Previous Release (11_20_01) 8332 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 8333 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 8334 8335 Current Release: 8336 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total 8337 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total 8338 8339 2) Linux: 8340 8341Updated all files to apply cleanly against 2.4.16. 8342 8343Added basic PCI Interrupt Routing Table (PRT) support for IA32 8344(acpi_pci.c), and unified the PRT code for IA32 and IA64. This 8345version supports both static and dyanmic PRT entries, but dynamic 8346entries are treated as if they were static (not yet 8347reconfigurable). Architecture- specific code to use this data is 8348absent on IA32 but should be available shortly. 8349 8350Changed the initialization sequence to start the ACPI interpreter 8351(acpi_init) prior to initialization of the PCI driver (pci_init) 8352in init/main.c. This ordering is required to support PRT and 8353facilitate other (future) enhancement. A side effect is that the 8354ACPI bus driver and certain device drivers can no longer be loaded 8355as modules. 8356 8357Modified the 'make menuconfig' options to allow PCI Interrupt 8358Routing support to be included without the ACPI Bus and other 8359device drivers. 8360 8361 3) ASL Compiler, version X2033: 8362 8363Fixed some issues with the use of the new CopyObject and 8364DataTableRegion operators. Both are fully functional. 8365 8366 ---------------------------------------- 8367Summary of changes for this label: 11_20_01 8368 8369 20 November 2001. Summary of changes for this release. 8370 8371 1) ACPI CA Core Subsystem: 8372 8373Updated Index support to match ACPI 2.0 semantics. Storing a 8374Integer, String, or Buffer to an Index of a Buffer will store only 8375the least-significant byte of the source to the Indexed buffer 8376byte. Multiple writes are not performed. 8377 8378Fixed a problem where the access type used in an AccessAs ASL 8379operator was not recorded correctly into the field object. 8380 8381Fixed a problem where ASL Event objects were created in a 8382signalled state. Events are now created in an unsignalled state. 8383 8384The internal object cache is now purged after table loading and 8385initialization to reduce the use of dynamic kernel memory -- on 8386the assumption that object use is greatest during the parse phase 8387of the entire table (versus the run-time use of individual control 8388methods.) 8389 8390ACPI 2.0 variable-length packages are now fully operational. 8391 8392Code and Data Size: Code and Data optimizations have permitted new 8393feature development with an actual reduction in the library size. 8394Current core subsystem library sizes are shown below. These are 8395the code and data sizes for the acpica.lib produced by the 8396Microsoft Visual C++ 6.0 compiler, and these values do not include 8397any ACPI driver or OSPM code. The debug version of the code 8398includes the debug output trace mechanism and has a larger code 8399and data size. Note that these values will vary depending on the 8400efficiency of the compiler and the compiler options used during 8401generation. 8402 8403 Previous Release (11_09_01): 8404 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 8405 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 8406 8407 Current Release: 8408 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total 8409 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total 8410 8411 2) Linux: 8412 8413Enhanced the ACPI boot-time initialization code to allow the use 8414of Local APIC tables for processor enumeration on IA-32, and to 8415pave the way for a fully MPS-free boot (on SMP systems) in the 8416near future. This functionality replaces 8417arch/i386/kernel/acpitables.c, which was introduced in an earlier 84182.4.15-preX release. To enable this feature you must add 8419"acpi_boot=on" to the kernel command line -- see the help entry 8420for CONFIG_ACPI_BOOT for more information. An IA-64 release is in 8421the works... 8422 8423Restructured the configuration options to allow boot-time table 8424parsing support without inclusion of the ACPI Interpreter (and 8425other) code. 8426 8427NOTE: This release does not include fixes for the reported events, 8428power-down, and thermal passive cooling issues (coming soon). 8429 8430 3) ASL Compiler: 8431 8432Added additional typechecking for Fields within restricted access 8433Operation Regions. All fields within EC and CMOS regions must be 8434declared with ByteAcc. All fields withing SMBus regions must be 8435declared with the BufferAcc access type. 8436 8437Fixed a problem where the listing file output of control methods 8438no longer interleaved the actual AML code with the ASL source 8439code. 8440 8441 8442 8443 8444---------------------------------------- 8445Summary of changes for this label: 11_09_01 8446 84471) ACPI CA Core Subsystem: 8448 8449Implemented ACPI 2.0-defined support for writes to fields with a 8450Buffer, String, or Integer source operand that is smaller than the 8451target field. In these cases, the source operand is zero-extended 8452to fill the target field. 8453 8454Fixed a problem where a Field starting bit offset (within the 8455parent operation region) was calculated incorrectly if the 8456 8457alignment of the field differed from the access width. This 8458affected CreateWordField, CreateDwordField, CreateQwordField, and 8459possibly other fields that use the "AccessAny" keyword. 8460 8461Fixed a problem introduced in the 11_02_01 release where indirect 8462stores through method arguments did not operate correctly. 8463 84642) Linux: 8465 8466Implemented boot-time ACPI table parsing support 8467(CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code 8468facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than 8469legacy BIOS interfaces (e.g. MPS) for the configuration of system 8470processors, memory, and interrupts during setup_arch(). Note that 8471this patch does not include the required architecture-specific 8472changes required to apply this information -- subsequent patches 8473will be posted for both IA32 and IA64 to achieve this. 8474 8475Added low-level sleep support for IA32 platforms, courtesy of Pat 8476Mochel. This allows IA32 systems to transition to/from various 8477sleeping states (e.g. S1, S3), although the lack of a centralized 8478driver model and power-manageable drivers will prevent its 8479(successful) use on most systems. 8480 8481Revamped the ACPI 'menuconfig' layout: created new "ACPI Support" 8482submenu, unified IA32 and IA64 options, added new "Boot using ACPI 8483tables" option, etc. 8484 8485Increased the default timeout for the EC driver from 1ms to 10ms 8486(1000 cycles of 10us) to try to address AE_TIME errors during EC 8487transactions. 8488 8489 ---------------------------------------- 8490Summary of changes for this label: 11_02_01 8491 84921) ACPI CA Core Subsystem: 8493 8494ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access 8495(QWordAcc keyword). All ACPI 2.0 64-bit support is now 8496implemented. 8497 8498OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required 8499changes to support ACPI 2.0 Qword field access. Read/Write 8500PciConfiguration(), Read/Write Memory(), and Read/Write Port() now 8501accept an ACPI_INTEGER (64 bits) as the value parameter. Also, 8502the value parameter for the address space handler interface is now 8503an ACPI_INTEGER. OSL implementations of these interfaces must now 8504handle the case where the Width parameter is 64. 8505 8506Index Fields: Fixed a problem where unaligned bit assembly and 8507disassembly for IndexFields was not supported correctly. 8508 8509Index and Bank Fields: Nested Index and Bank Fields are now 8510supported. During field access, a check is performed to ensure 8511that the value written to an Index or Bank register is not out of 8512the range of the register. The Index (or Bank) register is 8513written before each access to the field data. Future support will 8514include allowing individual IndexFields to be wider than the 8515DataRegister width. 8516 8517Fields: Fixed a problem where the AML interpreter was incorrectly 8518attempting to write beyond the end of a Field/OpRegion. This was 8519a boundary case that occurred when a DWORD field was written to a 8520BYTE access OpRegion, forcing multiple writes and causing the 8521interpreter to write one datum too many. 8522 8523Fields: Fixed a problem with Field/OpRegion access where the 8524starting bit address of a field was incorrectly calculated if the 8525current access type was wider than a byte (WordAcc, DwordAcc, or 8526QwordAcc). 8527 8528Fields: Fixed a problem where forward references to individual 8529FieldUnits (individual Field names within a Field definition) were 8530not resolved during the AML table load. 8531 8532Fields: Fixed a problem where forward references from a Field 8533definition to the parent Operation Region definition were not 8534resolved during the AML table load. 8535 8536Fields: Duplicate FieldUnit names within a scope are now detected 8537during AML table load. 8538 8539Acpi Interfaces: Fixed a problem where the AcpiGetName() interface 8540returned an incorrect name for the root node. 8541 8542Code and Data Size: Code and Data optimizations have permitted new 8543feature development with an actual reduction in the library size. 8544Current core subsystem library sizes are shown below. These are 8545the code and data sizes for the acpica.lib produced by the 8546Microsoft Visual C++ 6.0 compiler, and these values do not include 8547any ACPI driver or OSPM code. The debug version of the code 8548includes the debug output trace mechanism and has a larger code 8549and data size. Note that these values will vary depending on the 8550efficiency of the compiler and the compiler options used during 8551generation. 8552 8553 Previous Release (10_18_01): 8554 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 8555 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 8556 8557 Current Release: 8558 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total 8559 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total 8560 8561 2) Linux: 8562 8563Improved /proc processor output (Pavel Machek) Re-added 8564MODULE_LICENSE("GPL") to all modules. 8565 8566 3) ASL Compiler version X2030: 8567 8568Duplicate FieldUnit names within a scope are now detected and 8569flagged as errors. 8570 8571 4) Documentation: 8572 8573Programmer Reference updated to reflect OSL and address space 8574handler interface changes described above. 8575 8576---------------------------------------- 8577Summary of changes for this label: 10_18_01 8578 8579ACPI CA Core Subsystem: 8580 8581Fixed a problem with the internal object reference count mechanism 8582that occasionally caused premature object deletion. This resolves 8583all of the outstanding problem reports where an object is deleted 8584in the middle of an interpreter evaluation. Although this problem 8585only showed up in rather obscure cases, the solution to the 8586problem involved an adjustment of all reference counts involving 8587objects attached to namespace nodes. 8588 8589Fixed a problem with Field support in the interpreter where 8590writing to an aligned field whose length is an exact multiple (2 8591or greater) of the field access granularity would cause an attempt 8592to write beyond the end of the field. 8593 8594The top level AML opcode execution functions within the 8595interpreter have been renamed with a more meaningful and 8596consistent naming convention. The modules exmonad.c and 8597exdyadic.c were eliminated. New modules are exoparg1.c, 8598exoparg2.c, exoparg3.c, and exoparg6.c. 8599 8600Support for the ACPI 2.0 "Mid" ASL operator has been implemented. 8601 8602Fixed a problem where the AML debugger was causing some internal 8603objects to not be deleted during subsystem termination. 8604 8605Fixed a problem with the external AcpiEvaluateObject interface 8606where the subsystem would fault if the named object to be 8607evaluated refered to a constant such as Zero, Ones, etc. 8608 8609Fixed a problem with IndexFields and BankFields where the 8610subsystem would fault if the index, data, or bank registers were 8611not defined in the same scope as the field itself. 8612 8613Added printf format string checking for compilers that support 8614this feature. Corrected more than 50 instances of issues with 8615format specifiers within invocations of ACPI_DEBUG_PRINT 8616throughout the core subsystem code. 8617 8618The ASL "Revision" operator now returns the ACPI support level 8619implemented in the core - the value "2" since the ACPI 2.0 support 8620is more than 50% implemented. 8621 8622Enhanced the output of the AML debugger "dump namespace" command 8623to output in a more human-readable form. 8624 8625Current core subsystem library code sizes are shown below. These 8626 8627are the code and data sizes for the acpica.lib produced by the 8628Microsoft Visual C++ 6.0 compiler, and these values do not include 8629any ACPI driver or OSPM code. The debug version of the code 8630includes the full debug trace mechanism -- leading to a much 8631 8632larger code and data size. Note that these values will vary 8633depending on the efficiency of the compiler and the compiler 8634options used during generation. 8635 8636 Previous Label (09_20_01): 8637 Non-Debug Version: 65K Code, 5K Data, 70K Total 8638 Debug Version: 138K Code, 58K Data, 196K Total 8639 8640 This Label: 8641 8642 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total 8643 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total 8644 8645Linux: 8646 8647Implemented a "Bad BIOS Blacklist" to track machines that have 8648known ASL/AML problems. 8649 8650Enhanced the /proc interface for the thermal zone driver and added 8651support for _HOT (the critical suspend trip point). The 'info' 8652file now includes threshold/policy information, and allows setting 8653of _SCP (cooling preference) and _TZP (polling frequency) values 8654to the 'info' file. Examples: "echo tzp=5 > info" sets the polling 8655frequency to 5 seconds, and "echo scp=1 > info" sets the cooling 8656preference to the passive/quiet mode (if supported by the ASL). 8657 8658Implemented a workaround for a gcc bug that resuted in an OOPs 8659when loading the control method battery driver. 8660 8661 ---------------------------------------- 8662Summary of changes for this label: 09_20_01 8663 8664 ACPI CA Core Subsystem: 8665 8666The AcpiEnableEvent and AcpiDisableEvent interfaces have been 8667modified to allow individual GPE levels to be flagged as wake- 8668enabled (i.e., these GPEs are to remain enabled when the platform 8669sleeps.) 8670 8671The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now 8672support wake-enabled GPEs. This means that upon entering the 8673sleep state, all GPEs that are not wake-enabled are disabled. 8674When leaving the sleep state, these GPEs are reenabled. 8675 8676A local double-precision divide/modulo module has been added to 8677enhance portability to OS kernels where a 64-bit math library is 8678not available. The new module is "utmath.c". 8679 8680Several optimizations have been made to reduce the use of CPU 8681stack. Originally over 2K, the maximum stack usage is now below 86822K at 1860 bytes (1.82k) 8683 8684Fixed a problem with the AcpiGetFirmwareTable interface where the 8685root table pointer was not mapped into a logical address properly. 8686 8687Fixed a problem where a NULL pointer was being dereferenced in the 8688interpreter code for the ASL Notify operator. 8689 8690Fixed a problem where the use of the ASL Revision operator 8691returned an error. This operator now returns the current version 8692of the ACPI CA core subsystem. 8693 8694Fixed a problem where objects passed as control method parameters 8695to AcpiEvaluateObject were always deleted at method termination. 8696However, these objects may end up being stored into the namespace 8697by the called method. The object reference count mechanism was 8698applied to these objects instead of a force delete. 8699 8700Fixed a problem where static strings or buffers (contained in the 8701AML code) that are declared as package elements within the ASL 8702code could cause a fault because the interpreter would attempt to 8703delete them. These objects are now marked with the "static 8704object" flag to prevent any attempt to delete them. 8705 8706Implemented an interpreter optimization to use operands directly 8707from the state object instead of extracting the operands to local 8708variables. This reduces stack use and code size, and improves 8709performance. 8710 8711The module exxface.c was eliminated as it was an unnecessary extra 8712layer of code. 8713 8714Current core subsystem library code sizes are shown below. These 8715are the code and data sizes for the acpica.lib produced by the 8716Microsoft Visual C++ 6.0 compiler, and these values do not include 8717any ACPI driver or OSPM code. The debug version of the code 8718includes the full debug trace mechanism -- leading to a much 8719larger code and data size. Note that these values will vary 8720depending on the efficiency of the compiler and the compiler 8721options used during generation. 8722 8723 Non-Debug Version: 65K Code, 5K Data, 70K Total 8724(Previously 69K) Debug Version: 138K Code, 58K Data, 196K 8725Total (Previously 195K) 8726 8727Linux: 8728 8729Support for ACPI 2.0 64-bit integers has been added. All ACPI 8730Integer objects are now 64 bits wide 8731 8732All Acpi data types and structures are now in lower case. Only 8733Acpi macros are upper case for differentiation. 8734 8735 Documentation: 8736 8737Changes to the external interfaces as described above. 8738 8739 ---------------------------------------- 8740Summary of changes for this label: 08_31_01 8741 8742 ACPI CA Core Subsystem: 8743 8744A bug with interpreter implementation of the ASL Divide operator 8745was found and fixed. The implicit function return value (not the 8746explicit store operands) was returning the remainder instead of 8747the quotient. This was a longstanding bug and it fixes several 8748known outstanding issues on various platforms. 8749 8750The ACPI_DEBUG_PRINT and function trace entry/exit macros have 8751been further optimized for size. There are 700 invocations of the 8752DEBUG_PRINT macro alone, so each optimization reduces the size of 8753the debug version of the subsystem significantly. 8754 8755A stack trace mechanism has been implemented. The maximum stack 8756usage is about 2K on 32-bit platforms. The debugger command "stat 8757stack" will display the current maximum stack usage. 8758 8759All public symbols and global variables within the subsystem are 8760now prefixed with the string "Acpi". This keeps all of the 8761symbols grouped together in a kernel map, and avoids conflicts 8762with other kernel subsystems. 8763 8764Most of the internal fixed lookup tables have been moved into the 8765code segment via the const operator. 8766 8767Several enhancements have been made to the interpreter to both 8768reduce the code size and improve performance. 8769 8770Current core subsystem library code sizes are shown below. These 8771are the code and data sizes for the acpica.lib produced by the 8772Microsoft Visual C++ 6.0 compiler, and these values do not include 8773any ACPI driver or OSPM code. The debug version of the code 8774includes the full debug trace mechanism which contains over 700 8775invocations of the DEBUG_PRINT macro, 500 function entry macro 8776invocations, and over 900 function exit macro invocations -- 8777leading to a much larger code and data size. Note that these 8778values will vary depending on the efficiency of the compiler and 8779the compiler options used during generation. 8780 8781 Non-Debug Version: 64K Code, 5K Data, 69K Total 8782Debug Version: 137K Code, 58K Data, 195K Total 8783 8784 Linux: 8785 8786Implemented wbinvd() macro, pending a kernel-wide definition. 8787 8788Fixed /proc/acpi/event to handle poll() and short reads. 8789 8790 ASL Compiler, version X2026: 8791 8792Fixed a problem introduced in the previous label where the AML 8793 8794code emitted for package objects produced packages with zero 8795length. 8796 8797 ---------------------------------------- 8798Summary of changes for this label: 08_16_01 8799 8800ACPI CA Core Subsystem: 8801 8802The following ACPI 2.0 ASL operators have been implemented in the 8803AML interpreter (These are already supported by the Intel ASL 8804compiler): ToDecimalString, ToHexString, ToString, ToInteger, and 8805ToBuffer. Support for 64-bit AML constants is implemented in the 8806AML parser, debugger, and disassembler. 8807 8808The internal memory tracking mechanism (leak detection code) has 8809been upgraded to reduce the memory overhead (a separate tracking 8810block is no longer allocated for each memory allocation), and now 8811supports all of the internal object caches. 8812 8813The data structures and code for the internal object caches have 8814been coelesced and optimized so that there is a single cache and 8815memory list data structure and a single group of functions that 8816implement generic cache management. This has reduced the code 8817size in both the debug and release versions of the subsystem. 8818 8819The DEBUG_PRINT macro(s) have been optimized for size and replaced 8820by ACPI_DEBUG_PRINT. The syntax for this macro is slightly 8821different, because it generates a single call to an internal 8822function. This results in a savings of about 90 bytes per 8823invocation, resulting in an overall code and data savings of about 882416% in the debug version of the subsystem. 8825 8826 Linux: 8827 8828Fixed C3 disk corruption problems and re-enabled C3 on supporting 8829machines. 8830 8831Integrated low-level sleep code by Patrick Mochel. 8832 8833Further tweaked source code Linuxization. 8834 8835Other minor fixes. 8836 8837 ASL Compiler: 8838 8839Support for ACPI 2.0 variable length packages is fixed/completed. 8840 8841Fixed a problem where the optional length parameter for the ACPI 88422.0 ToString operator. 8843 8844Fixed multiple extraneous error messages when a syntax error is 8845detected within the declaration line of a control method. 8846 8847 ---------------------------------------- 8848Summary of changes for this label: 07_17_01 8849 8850ACPI CA Core Subsystem: 8851 8852Added a new interface named AcpiGetFirmwareTable to obtain any 8853ACPI table via the ACPI signature. The interface can be called at 8854any time during kernel initialization, even before the kernel 8855virtual memory manager is initialized and paging is enabled. This 8856allows kernel subsystems to obtain ACPI tables very early, even 8857before the ACPI CA subsystem is initialized. 8858 8859Fixed a problem where Fields defined with the AnyAcc attribute 8860could be resolved to the incorrect address under the following 8861conditions: 1) the field width is larger than 8 bits and 2) the 8862parent operation region is not defined on a DWORD boundary. 8863 8864Fixed a problem where the interpreter is not being locked during 8865namespace initialization (during execution of the _INI control 8866methods), causing an error when an attempt is made to release it 8867later. 8868 8869ACPI 2.0 support in the AML Interpreter has begun and will be 8870ongoing throughout the rest of this year. In this label, The Mod 8871operator is implemented. 8872 8873Added a new data type to contain full PCI addresses named 8874ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device, 8875and Function values. 8876 8877 Linux: 8878 8879Enhanced the Linux version of the source code to change most 8880capitalized ACPI type names to lowercase. For example, all 8881instances of ACPI_STATUS are changed to acpi_status. This will 8882result in a large diff, but the change is strictly cosmetic and 8883aligns the CA code closer to the Linux coding standard. 8884 8885OSL Interfaces: 8886 8887The interfaces to the PCI configuration space have been changed to 8888add the PCI Segment number and to split the single 32-bit combined 8889DeviceFunction field into two 16-bit fields. This was 8890accomplished by moving the four values that define an address in 8891PCI configuration space (segment, bus, device, and function) to 8892the new ACPI_PCI_ID structure. 8893 8894The changes to the PCI configuration space interfaces led to a 8895reexamination of the complete set of address space access 8896interfaces for PCI, I/O, and Memory. The previously existing 18 8897interfaces have proven difficult to maintain (any small change 8898must be propagated across at least 6 interfaces) and do not easily 8899allow for future expansion to 64 bits if necessary. Also, on some 8900systems, it would not be appropriate to demultiplex the access 8901width (8, 16, 32,or 64) before calling the OSL if the 8902corresponding native OS interfaces contain a similar access width 8903parameter. For these reasons, the 18 address space interfaces 8904have been replaced by these 6 new ones: 8905 8906AcpiOsReadPciConfiguration 8907AcpiOsWritePciConfiguration 8908AcpiOsReadMemory 8909AcpiOsWriteMemory 8910AcpiOsReadPort 8911AcpiOsWritePort 8912 8913Added a new interface named AcpiOsGetRootPointer to allow the OSL 8914to perform the platform and/or OS-specific actions necessary to 8915obtain the ACPI RSDP table pointer. On IA-32 platforms, this 8916interface will simply call down to the CA core to perform the low- 8917memory search for the table. On IA-64, the RSDP is obtained from 8918EFI. Migrating this interface to the OSL allows the CA core to 8919 8920remain OS and platform independent. 8921 8922Added a new interface named AcpiOsSignal to provide a generic 8923"function code and pointer" interface for various miscellaneous 8924signals and notifications that must be made to the host OS. The 8925first such signals are intended to support the ASL Fatal and 8926Breakpoint operators. In the latter case, the AcpiOsBreakpoint 8927interface has been obsoleted. 8928 8929The definition of the AcpiFormatException interface has been 8930changed to simplify its use. The caller no longer must supply a 8931buffer to the call; A pointer to a const string is now returned 8932directly. This allows the call to be easily used in printf 8933statements, etc. since the caller does not have to manage a local 8934buffer. 8935 8936 8937 ASL Compiler, Version X2025: 8938 8939The ACPI 2.0 Switch/Case/Default operators have been implemented 8940and are fully functional. They will work with all ACPI 1.0 8941interpreters, since the operators are simply translated to If/Else 8942pairs. 8943 8944The ACPI 2.0 ElseIf operator is implemented and will also work 8945with 1.0 interpreters, for the same reason. 8946 8947Implemented support for ACPI 2.0 variable-length packages. These 8948packages have a separate opcode, and their size is determined by 8949the interpreter at run-time. 8950 8951Documentation The ACPI CA Programmer Reference has been updated to 8952reflect the new interfaces and changes to existing interfaces. 8953 8954 ------------------------------------------ 8955Summary of changes for this label: 06_15_01 8956 8957 ACPI CA Core Subsystem: 8958 8959Fixed a problem where a DWORD-accessed field within a Buffer 8960object would get its byte address inadvertently rounded down to 8961the nearest DWORD. Buffers are always Byte-accessible. 8962 8963 ASL Compiler, version X2024: 8964 8965Fixed a problem where the Switch() operator would either fault or 8966hang the compiler. Note however, that the AML code for this ACPI 89672.0 operator is not yet implemented. 8968 8969Compiler uses the new AcpiOsGetTimer interface to obtain compile 8970timings. 8971 8972Implementation of the CreateField operator automatically converts 8973a reference to a named field within a resource descriptor from a 8974byte offset to a bit offset if required. 8975 8976Added some missing named fields from the resource descriptor 8977support. These are the names that are automatically created by the 8978compiler to reference fields within a descriptor. They are only 8979valid at compile time and are not passed through to the AML 8980interpreter. 8981 8982Resource descriptor named fields are now typed as Integers and 8983subject to compile-time typechecking when used in expressions. 8984 8985 ------------------------------------------ 8986Summary of changes for this label: 05_18_01 8987 8988 ACPI CA Core Subsystem: 8989 8990Fixed a couple of problems in the Field support code where bits 8991from adjacent fields could be returned along with the proper field 8992bits. Restructured the field support code to improve performance, 8993readability and maintainability. 8994 8995New DEBUG_PRINTP macro automatically inserts the procedure name 8996into the output, saving hundreds of copies of procedure name 8997strings within the source, shrinking the memory footprint of the 8998debug version of the core subsystem. 8999 9000 Source Code Structure: 9001 9002The source code directory tree was restructured to reflect the 9003current organization of the component architecture. Some files 9004and directories have been moved and/or renamed. 9005 9006 Linux: 9007 9008Fixed leaking kacpidpc processes. 9009 9010Fixed queueing event data even when /proc/acpi/event is not 9011opened. 9012 9013 ASL Compiler, version X2020: 9014 9015Memory allocation performance enhancement - over 24X compile time 9016improvement on large ASL files. Parse nodes and namestring 9017buffers are now allocated from a large internal compiler buffer. 9018 9019The temporary .SRC file is deleted unless the "-s" option is 9020specified 9021 9022The "-d" debug output option now sends all output to the .DBG file 9023instead of the console. 9024 9025"External" second parameter is now optional 9026 9027"ElseIf" syntax now properly allows the predicate 9028 9029Last operand to "Load" now recognized as a Target operand 9030 9031Debug object can now be used anywhere as a normal object. 9032 9033ResourceTemplate now returns an object of type BUFFER 9034 9035EISAID now returns an object of type INTEGER 9036 9037"Index" now works with a STRING operand 9038 9039"LoadTable" now accepts optional parameters 9040 9041"ToString" length parameter is now optional 9042 9043"Interrupt (ResourceType," parse error fixed. 9044 9045"Register" with a user-defined region space parse error fixed 9046 9047Escaped backslash at the end of a string ("\\") scan/parse error 9048fixed 9049 9050"Revision" is now an object of type INTEGER. 9051 9052 9053 9054------------------------------------------ 9055Summary of changes for this label: 05_02_01 9056 9057Linux: 9058 9059/proc/acpi/event now blocks properly. 9060 9061Removed /proc/sys/acpi. You can still dump your DSDT from 9062/proc/acpi/dsdt. 9063 9064 ACPI CA Core Subsystem: 9065 9066Fixed a problem introduced in the previous label where some of the 9067"small" resource descriptor types were not recognized. 9068 9069Improved error messages for the case where an ASL Field is outside 9070the range of the parent operation region. 9071 9072 ASL Compiler, version X2018: 9073 9074 9075Added error detection for ASL Fields that extend beyond the length 9076of the parent operation region (only if the length of the region 9077is known at compile time.) This includes fields that have a 9078minimum access width that is smaller than the parent region, and 9079individual field units that are partially or entirely beyond the 9080extent of the parent. 9081 9082 9083 9084------------------------------------------ 9085Summary of changes for this label: 04_27_01 9086 9087 ACPI CA Core Subsystem: 9088 9089Fixed a problem where the namespace mutex could be released at the 9090wrong time during execution of AcpiRemoveAddressSpaceHandler. 9091 9092Added optional thread ID output for debug traces, to simplify 9093debugging of multiple threads. Added context switch notification 9094when the debug code realizes that a different thread is now 9095executing ACPI code. 9096 9097Some additional external data types have been prefixed with the 9098string "ACPI_" for consistency. This may effect existing code. 9099The data types affected are the external callback typedefs - e.g., 9100 9101WALK_CALLBACK becomes ACPI_WALK_CALLBACK. 9102 9103 Linux: 9104 9105Fixed an issue with the OSL semaphore implementation where a 9106thread was waking up with an error from receiving a SIGCHLD 9107signal. 9108 9109Linux version of ACPI CA now uses the system C library for string 9110manipulation routines instead of a local implementation. 9111 9112Cleaned up comments and removed TBDs. 9113 9114 ASL Compiler, version X2017: 9115 9116Enhanced error detection and reporting for all file I/O 9117operations. 9118 9119 Documentation: 9120 9121Programmer Reference updated to version 1.06. 9122 9123 9124 9125------------------------------------------ 9126Summary of changes for this label: 04_13_01 9127 9128 ACPI CA Core Subsystem: 9129 9130Restructured support for BufferFields and RegionFields. 9131BankFields support is now fully operational. All known 32-bit 9132limitations on field sizes have been removed. Both BufferFields 9133and (Operation) RegionFields are now supported by the same field 9134management code. 9135 9136Resource support now supports QWORD address and IO resources. The 913716/32/64 bit address structures and the Extended IRQ structure 9138have been changed to properly handle Source Resource strings. 9139 9140A ThreadId of -1 is now used to indicate a "mutex not acquired" 9141condition internally and must never be returned by AcpiOsThreadId. 9142This reserved value was changed from 0 since Unix systems allow a 9143thread ID of 0. 9144 9145Linux: 9146 9147Driver code reorganized to enhance portability 9148 9149Added a kernel configuration option to control ACPI_DEBUG 9150 9151Fixed the EC driver to honor _GLK. 9152 9153ASL Compiler, version X2016: 9154 9155Fixed support for the "FixedHw" keyword. Previously, the FixedHw 9156address space was set to 0, not 0x7f as it should be. 9157 9158 ------------------------------------------ 9159Summary of changes for this label: 03_13_01 9160 9161 ACPI CA Core Subsystem: 9162 9163During ACPI initialization, the _SB_._INI method is now run if 9164present. 9165 9166Notify handler fix - notifies are deferred until the parent method 9167completes execution. This fixes the "mutex already acquired" 9168issue seen occasionally. 9169 9170Part of the "implicit conversion" rules in ACPI 2.0 have been 9171found to cause compatibility problems with existing ASL/AML. The 9172convert "result-to-target-type" implementation has been removed 9173for stores to method Args and Locals. Source operand conversion 9174is still fully implemented. Possible changes to ACPI 2.0 9175specification pending. 9176 9177Fix to AcpiRsCalculatePciRoutingTableLength to return correct 9178length. 9179 9180Fix for compiler warnings for 64-bit compiles. 9181 9182 Linux: 9183 9184/proc output aligned for easier parsing. 9185 9186Release-version compile problem fixed. 9187 9188New kernel configuration options documented in Configure.help. 9189 9190IBM 600E - Fixed Sleep button may generate "Invalid <NULL> 9191context" message. 9192 9193 OSPM: 9194 9195Power resource driver integrated with bus manager. 9196 9197Fixed kernel fault during active cooling for thermal zones. 9198 9199Source Code: 9200 9201The source code tree has been restructured. 9202 9203 9204 9205------------------------------------------ 9206Summary of changes for this label: 03_02_01 9207 9208 Linux OS Services Layer (OSL): 9209 9210Major revision of all Linux-specific code. 9211 9212Modularized all ACPI-specific drivers. 9213 9214Added new thermal zone and power resource drivers. 9215 9216Revamped /proc interface (new functionality is under /proc/acpi). 9217 9218New kernel configuration options. 9219 9220 Linux known issues: 9221 9222New kernel configuration options not documented in Configure.help 9223yet. 9224 9225 9226Module dependencies not currently implemented. If used, they 9227should be loaded in this order: busmgr, power, ec, system, 9228processor, battery, ac_adapter, button, thermal. 9229 9230Modules will not load if CONFIG_MODVERSION is set. 9231 9232IBM 600E - entering S5 may reboot instead of shutting down. 9233 9234IBM 600E - Sleep button may generate "Invalid <NULL> context" 9235message. 9236 9237Some systems may fail with "execution mutex already acquired" 9238message. 9239 9240 ACPI CA Core Subsystem: 9241 9242Added a new OSL Interface, AcpiOsGetThreadId. This was required 9243for the deadlock detection code. Defined to return a non-zero, 32- 9244bit thread ID for the currently executing thread. May be a non- 9245zero constant integer on single-thread systems. 9246 9247Implemented deadlock detection for internal subsystem mutexes. We 9248may add conditional compilation for this code (debug only) later. 9249 9250ASL/AML Mutex object semantics are now fully supported. This 9251includes multiple acquires/releases by owner and support for the 9252 9253Mutex SyncLevel parameter. 9254 9255A new "Force Release" mechanism automatically frees all ASL 9256Mutexes that have been acquired but not released when a thread 9257exits the interpreter. This forces conformance to the ACPI spec 9258("All mutexes must be released when an invocation exits") and 9259prevents deadlocked ASL threads. This mechanism can be expanded 9260(later) to monitor other resource acquisitions if OEM ASL code 9261continues to misbehave (which it will). 9262 9263Several new ACPI exception codes have been added for the Mutex 9264support. 9265 9266Recursive method calls are now allowed and supported (the ACPI 9267spec does in fact allow recursive method calls.) The number of 9268recursive calls is subject to the restrictions imposed by the 9269SERIALIZED method keyword and SyncLevel (ACPI 2.0) method 9270parameter. 9271 9272Implemented support for the SyncLevel parameter for control 9273methods (ACPI 2.0 feature) 9274 9275Fixed a deadlock problem when multiple threads attempted to use 9276the interpreter. 9277 9278Fixed a problem where the string length of a String package 9279element was not always set in a package returned from 9280AcpiEvaluateObject. 9281 9282Fixed a problem where the length of a String package element was 9283not always included in the length of the overall package returned 9284from AcpiEvaluateObject. 9285 9286Added external interfaces (Acpi*) to the ACPI debug memory 9287manager. This manager keeps a list of all outstanding 9288allocations, and can therefore detect memory leaks and attempts to 9289free memory blocks more than once. Useful for code such as the 9290power manager, etc. May not be appropriate for device drivers. 9291Performance with the debug code enabled is slow. 9292 9293The ACPI Global Lock is now an optional hardware element. 9294 9295 ASL Compiler Version X2015: 9296 9297Integrated changes to allow the compiler to be generated on 9298multiple platforms. 9299 9300Linux makefile added to generate the compiler on Linux 9301 9302 Source Code: 9303 9304All platform-specific headers have been moved to their own 9305subdirectory, Include/Platform. 9306 9307New source file added, Interpreter/ammutex.c 9308 9309New header file, Include/acstruct.h 9310 9311 Documentation: 9312 9313The programmer reference has been updated for the following new 9314interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree 9315 9316 ------------------------------------------ 9317Summary of changes for this label: 02_08_01 9318 9319Core ACPI CA Subsystem: Fixed a problem where an error was 9320incorrectly returned if the return resource buffer was larger than 9321the actual data (in the resource interfaces). 9322 9323References to named objects within packages are resolved to the 9324 9325full pathname string before packages are returned directly (via 9326the AcpiEvaluateObject interface) or indirectly via the resource 9327interfaces. 9328 9329Linux OS Services Layer (OSL): 9330 9331Improved /proc battery interface. 9332 9333 9334Added C-state debugging output and other miscellaneous fixes. 9335 9336ASL Compiler Version X2014: 9337 9338All defined method arguments can now be used as local variables, 9339including the ones that are not actually passed in as parameters. 9340The compiler tracks initialization of the arguments and issues an 9341exception if they are used without prior assignment (just like 9342locals). 9343 9344The -o option now specifies a filename prefix that is used for all 9345output files, including the AML output file. Otherwise, the 9346default behavior is as follows: 1) the AML goes to the file 9347specified in the DSDT. 2) all other output files use the input 9348source filename as the base. 9349 9350 ------------------------------------------ 9351Summary of changes for this label: 01_25_01 9352 9353Core ACPI CA Subsystem: Restructured the implementation of object 9354store support within the interpreter. This includes support for 9355the Store operator as well as any ASL operators that include a 9356target operand. 9357 9358Partially implemented support for Implicit Result-to-Target 9359conversion. This is when a result object is converted on the fly 9360to the type of an existing target object. Completion of this 9361support is pending further analysis of the ACPI specification 9362concerning this matter. 9363 9364CPU-specific code has been removed from the subsystem (hardware 9365directory). 9366 9367New Power Management Timer functions added 9368 9369Linux OS Services Layer (OSL): Moved system state transition code 9370to the core, fixed it, and modified Linux OSL accordingly. 9371 9372Fixed C2 and C3 latency calculations. 9373 9374 9375We no longer use the compilation date for the version message on 9376initialization, but retrieve the version from AcpiGetSystemInfo(). 9377 9378Incorporated for fix Sony VAIO machines. 9379 9380Documentation: The Programmer Reference has been updated and 9381reformatted. 9382 9383 9384ASL Compiler: Version X2013: Fixed a problem where the line 9385numbering and error reporting could get out of sync in the 9386presence of multiple include files. 9387 9388 ------------------------------------------ 9389Summary of changes for this label: 01_15_01 9390 9391Core ACPI CA Subsystem: 9392 9393Implemented support for type conversions in the execution of the 9394ASL Concatenate operator (The second operand is converted to 9395match the type of the first operand before concatenation.) 9396 9397Support for implicit source operand conversion is partially 9398implemented. The ASL source operand types Integer, Buffer, and 9399String are freely interchangeable for most ASL operators and are 9400converted by the interpreter on the fly as required. Implicit 9401Target operand conversion (where the result is converted to the 9402target type before storing) is not yet implemented. 9403 9404Support for 32-bit and 64-bit BCD integers is implemented. 9405 9406Problem fixed where a field read on an aligned field could cause a 9407read past the end of the field. 9408 9409New exception, AE_AML_NO_RETURN_VALUE, is returned when a method 9410does not return a value, but the caller expects one. (The ASL 9411compiler flags this as a warning.) 9412 9413ASL Compiler: 9414 9415Version X2011: 94161. Static typechecking of all operands is implemented. This 9417prevents the use of invalid objects (such as using a Package where 9418an Integer is required) at compile time instead of at interpreter 9419run-time. 94202. The ASL source line is printed with ALL errors and warnings. 94213. Bug fix for source EOF without final linefeed. 94224. Debug option is split into a parse trace and a namespace trace. 94235. Namespace output option (-n) includes initial values for 9424integers and strings. 94256. Parse-only option added for quick syntax checking. 94267. Compiler checks for duplicate ACPI name declarations 9427 9428Version X2012: 94291. Relaxed typechecking to allow interchangeability between 9430strings, integers, and buffers. These types are now converted by 9431the interpreter at runtime. 94322. Compiler reports time taken by each internal subsystem in the 9433debug output file. 9434 9435 9436 ------------------------------------------ 9437Summary of changes for this label: 12_14_00 9438 9439ASL Compiler: 9440 9441This is the first official release of the compiler. Since the 9442compiler requires elements of the Core Subsystem, this label 9443synchronizes everything. 9444 9445------------------------------------------ 9446Summary of changes for this label: 12_08_00 9447 9448 9449Fixed a problem where named references within the ASL definition 9450of both OperationRegions and CreateXXXFields did not work 9451properly. The symptom was an AE_AML_OPERAND_TYPE during 9452initialization of the region/field. This is similar (but not 9453related internally) to the problem that was fixed in the last 9454label. 9455 9456Implemented both 32-bit and 64-bit support for the BCD ASL 9457functions ToBCD and FromBCD. 9458 9459Updated all legal headers to include "2000" in the copyright 9460years. 9461 9462 ------------------------------------------ 9463Summary of changes for this label: 12_01_00 9464 9465Fixed a problem where method invocations within the ASL definition 9466of both OperationRegions and CreateXXXFields did not work 9467properly. The symptom was an AE_AML_OPERAND_TYPE during 9468initialization of the region/field: 9469 9470 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments 9471[DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s) 9472(0x3005) 9473 9474Fixed a problem where operators with more than one nested 9475subexpression would fail. The symptoms were varied, by mostly 9476AE_AML_OPERAND_TYPE errors. This was actually a rather serious 9477problem that has gone unnoticed until now. 9478 9479 Subtract (Add (1,2), Multiply (3,4)) 9480 9481Fixed a problem where AcpiGetHandle didn't quite get fixed in the 9482previous build (The prefix part of a relative path was handled 9483incorrectly). 9484 9485Fixed a problem where Operation Region initialization failed if 9486the operation region name was a "namepath" instead of a simple 9487"nameseg". Symptom was an AE_NO_OPERAND error. 9488 9489Fixed a problem where an assignment to a local variable via the 9490indirect RefOf mechanism only worked for the first such 9491assignment. Subsequent assignments were ignored. 9492 9493 ------------------------------------------ 9494Summary of changes for this label: 11_15_00 9495 9496ACPI 2.0 table support with backwards support for ACPI 1.0 and the 94970.71 extensions. Note: although we can read ACPI 2.0 BIOS tables, 9498the AML interpreter does NOT have support for the new 2.0 ASL 9499grammar terms at this time. 9500 9501All ACPI hardware access is via the GAS structures in the ACPI 2.0 9502FADT. 9503 9504All physical memory addresses across all platforms are now 64 bits 9505wide. Logical address width remains dependent on the platform 9506(i.e., "void *"). 9507 9508AcpiOsMapMemory interface changed to a 64-bit physical address. 9509 9510The AML interpreter integer size is now 64 bits, as per the ACPI 95112.0 specification. 9512 9513For backwards compatibility with ACPI 1.0, ACPI tables with a 9514revision number less than 2 use 32-bit integers only. 9515 9516Fixed a problem where the evaluation of OpRegion operands did not 9517always resolve them to numbers properly. 9518 9519------------------------------------------ 9520Summary of changes for this label: 10_20_00 9521 9522Fix for CBN_._STA issue. This fix will allow correct access to 9523CBN_ OpRegions when the _STA returns 0x8. 9524 9525Support to convert ACPI constants (Ones, Zeros, One) to actual 9526values before a package object is returned 9527 9528Fix for method call as predicate to if/while construct causing 9529incorrect if/while behavior 9530 9531Fix for Else block package lengths sometimes calculated wrong (if 9532block > 63 bytes) 9533 9534Fix for Processor object length field, was always zero 9535 9536Table load abort if FACP sanity check fails 9537 9538Fix for problem with Scope(name) if name already exists 9539 9540Warning emitted if a named object referenced cannot be found 9541(resolved) during method execution. 9542 9543 9544 9545 9546 9547------------------------------------------ 9548Summary of changes for this label: 9_29_00 9549 9550New table initialization interfaces: AcpiInitializeSubsystem no 9551longer has any parameters AcpiFindRootPointer - Find the RSDP (if 9552necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP- 9553>RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by 9554AcpiLoadTables 9555 9556Note: These interface changes require changes to all existing OSDs 9557 9558The PCI_Config default address space handler is always installed 9559at the root namespace object. 9560 9561------------------------------------------- 9562Summary of changes for this label: 09_15_00 9563 9564The new initialization architecture is implemented. New 9565interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize) 9566AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace 9567 9568(Namespace is automatically loaded when a table is loaded) 9569 9570The ACPI_OPERAND_OBJECT has been optimized to shrink its size from 957152 bytes to 32 bytes. There is usually one of these for every 9572namespace object, so the memory savings is significant. 9573 9574Implemented just-in-time evaluation of the CreateField operators. 9575 9576Bug fixes for IA-64 support have been integrated. 9577 9578Additional code review comments have been implemented 9579 9580The so-called "third pass parse" has been replaced by a final walk 9581through the namespace to initialize all operation regions (address 9582spaces) and fields that have not yet been initialized during the 9583execution of the various _INI and REG methods. 9584 9585New file - namespace/nsinit.c 9586 9587------------------------------------------- 9588Summary of changes for this label: 09_01_00 9589 9590Namespace manager data structures have been reworked to change the 9591primary object from a table to a single object. This has 9592resulted in dynamic memory savings of 3X within the namespace and 95932X overall in the ACPI CA subsystem. 9594 9595Fixed problem where the call to AcpiEvFindPciRootBuses was 9596inadvertently left commented out. 9597 9598Reduced the warning count when generating the source with the GCC 9599compiler. 9600 9601Revision numbers added to each module header showing the 9602SourceSafe version of the file. Please refer to this version 9603number when giving us feedback or comments on individual modules. 9604 9605The main object types within the subsystem have been renamed to 9606clarify their purpose: 9607 9608ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT 9609ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT 9610ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE 9611 9612NOTE: no changes to the initialization sequence are included in 9613this label. 9614 9615------------------------------------------- 9616Summary of changes for this label: 08_23_00 9617 9618Fixed problem where TerminateControlMethod was being called 9619multiple times per method 9620 9621Fixed debugger problem where single stepping caused a semaphore to 9622be oversignalled 9623 9624Improved performance through additional parse object caching - 9625added ACPI_EXTENDED_OP type 9626 9627------------------------------------------- 9628Summary of changes for this label: 08_10_00 9629 9630Parser/Interpreter integration: Eliminated the creation of 9631complete parse trees for ACPI tables and control methods. 9632Instead, parse subtrees are created and then deleted as soon as 9633they are processed (Either entered into the namespace or executed 9634by the interpreter). This reduces the use of dynamic kernel 9635memory significantly. (about 10X) 9636 9637Exception codes broken into classes and renumbered. Be sure to 9638recompile all code that includes acexcep.h. Hopefully we won't 9639have to renumber the codes again now that they are split into 9640classes (environment, programmer, AML code, ACPI table, and 9641internal). 9642 9643Fixed some additional alignment issues in the Resource Manager 9644subcomponent 9645 9646Implemented semaphore tracking in the AcpiExec utility, and fixed 9647several places where mutexes/semaphores were being unlocked 9648without a corresponding lock operation. There are no known 9649semaphore or mutex "leaks" at this time. 9650 9651Fixed the case where an ASL Return operator is used to return an 9652unnamed package. 9653 9654------------------------------------------- 9655Summary of changes for this label: 07_28_00 9656 9657Fixed a problem with the way addresses were calculated in 9658AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem 9659manifested itself when a Field was created with WordAccess or 9660DwordAccess, but the field unit defined within the Field was less 9661 9662than a Word or Dword. 9663 9664Fixed a problem in AmlDumpOperands() module's loop to pull 9665operands off of the operand stack to display information. The 9666problem manifested itself as a TLB error on 64-bit systems when 9667accessing an operand stack with two or more operands. 9668 9669Fixed a problem with the PCI configuration space handlers where 9670context was getting confused between accesses. This required a 9671change to the generic address space handler and address space 9672setup definitions. Handlers now get both a global handler context 9673(this is the one passed in by the user when executing 9674AcpiInstallAddressSpaceHandler() and a specific region context 9675that is unique to each region (For example, the _ADR, _SEG and 9676_BBN values associated with a specific region). The generic 9677function definitions have changed to the following: 9678 9679typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function, 9680UINT32 Address, UINT32 BitWidth, UINT32 *Value, void 9681*HandlerContext, // This used to be void *Context void 9682*RegionContext); // This is an additional parameter 9683 9684typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE 9685RegionHandle, UINT32 Function, void *HandlerContext, void 9686**RegionContext); // This used to be **ReturnContext 9687 9688------------------------------------------- 9689Summary of changes for this label: 07_21_00 9690 9691Major file consolidation and rename. All files within the 9692interpreter have been renamed as well as most header files. This 9693was done to prevent collisions with existing files in the host 9694OSs -- filenames such as "config.h" and "global.h" seem to be 9695quite common. The VC project files have been updated. All 9696makefiles will require modification. 9697 9698The parser/interpreter integration continues in Phase 5 with the 9699implementation of a complete 2-pass parse (the AML is parsed 9700twice) for each table; This avoids the construction of a huge 9701parse tree and therefore reduces the amount of dynamic memory 9702required by the subsystem. Greater use of the parse object cache 9703means that performance is unaffected. 9704 9705Many comments from the two code reviews have been rolled in. 9706 9707The 64-bit alignment support is complete. 9708 9709------------------------------------------- 9710Summary of changes for this label: 06_30_00 9711 9712With a nod and a tip of the hat to the technology of yesteryear, 9713we've added support in the source code for 80 column output 9714devices. The code is now mostly constrained to 80 columns or 9715less to support environments and editors that 1) cannot display 9716or print more than 80 characters on a single line, and 2) cannot 9717disable line wrapping. 9718 9719A major restructuring of the namespace data structure has been 9720completed. The result is 1) cleaner and more 9721understandable/maintainable code, and 2) a significant reduction 9722in the dynamic memory requirement for each named ACPI object 9723(almost half). 9724 9725------------------------------------------- 9726Summary of changes for this label: 06_23_00 9727 9728Linux support has been added. In order to obtain approval to get 9729the ACPI CA subsystem into the Linux kernel, we've had to make 9730quite a few changes to the base subsystem that will affect all 9731users (all the changes are generic and OS- independent). The 9732effects of these global changes have been somewhat far reaching. 9733Files have been merged and/or renamed and interfaces have been 9734renamed. The major changes are described below. 9735 9736Osd* interfaces renamed to AcpiOs* to eliminate namespace 9737pollution/confusion within our target kernels. All OSD 9738interfaces must be modified to match the new naming convention. 9739 9740Files merged across the subsystem. A number of the smaller source 9741and header files have been merged to reduce the file count and 9742increase the density of the existing files. There are too many 9743to list here. In general, makefiles that call out individual 9744files will require rebuilding. 9745 9746Interpreter files renamed. All interpreter files now have the 9747prefix am* instead of ie* and is*. 9748 9749Header files renamed: The acapi.h file is now acpixf.h. The 9750acpiosd.h file is now acpiosxf.h. We are removing references to 9751the acronym "API" since it is somewhat windowsy. The new name is 9752"external interface" or xface or xf in the filenames.j 9753 9754 9755All manifest constants have been forced to upper case (some were 9756mixed case.) Also, the string "ACPI_" has been prepended to many 9757(not all) of the constants, typedefs, and structs. 9758 9759The globals "DebugLevel" and "DebugLayer" have been renamed 9760"AcpiDbgLevel" and "AcpiDbgLayer" respectively. 9761 9762All other globals within the subsystem are now prefixed with 9763"AcpiGbl_" Internal procedures within the subsystem are now 9764prefixed with "Acpi" (with only a few exceptions). The original 9765two-letter abbreviation for the subcomponent remains after "Acpi" 9766- for example, CmCallocate became AcpiCmCallocate. 9767 9768Added a source code translation/conversion utility. Used to 9769generate the Linux source code, it can be modified to generate 9770other types of source as well. Can also be used to cleanup 9771existing source by removing extraneous spaces and blank lines. 9772Found in tools/acpisrc/* 9773 9774OsdUnMapMemory was renamed to OsdUnmapMemory and then 9775AcpiOsUnmapMemory. (UnMap became Unmap). 9776 9777A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore. 9778When set to one, this indicates that the caller wants to use the 9779 9780semaphore as a mutex, not a counting semaphore. ACPI CA uses 9781both types. However, implementers of this call may want to use 9782different OS primitives depending on the type of semaphore 9783requested. For example, some operating systems provide separate 9784 9785"mutex" and "semaphore" interfaces - where the mutex interface is 9786much faster because it doesn't have all the overhead of a full 9787semaphore implementation. 9788 9789Fixed a deadlock problem where a method that accesses the PCI 9790address space can block forever if it is the first access to the 9791space. 9792 9793------------------------------------------- 9794Summary of changes for this label: 06_02_00 9795 9796Support for environments that cannot handle unaligned data 9797accesses (e.g. firmware and OS environments devoid of alignment 9798handler technology namely SAL/EFI and the IA-64 Linux kernel) has 9799been added (via configurable macros) in these three areas: - 9800Transfer of data from the raw AML byte stream is done via byte 9801moves instead of word/dword/qword moves. - External objects are 9802aligned within the user buffer, including package elements (sub- 9803objects). - Conversion of name strings to UINT32 Acpi Names is now 9804done byte-wise. 9805 9806The Store operator was modified to mimic Microsoft's 9807implementation when storing to a Buffer Field. 9808 9809Added a check of the BM_STS bit before entering C3. 9810 9811The methods subdirectory has been obsoleted and removed. A new 9812file, cmeval.c subsumes the functionality. 9813 9814A 16-bit (DOS) version of AcpiExec has been developed. The 9815makefile is under the acpiexec directory. 9816