1 ----------------------------------------
2 18 October 2012. Summary of changes for version 20121018:
5 1) ACPICA Kernel-resident Subsystem:
7 Updated support for the ACPI 5.0 MPST table. Fixes some problems
8 introduced by late changes to the table as it was added to the ACPI 5.0
9 specification. Includes header, disassembler, and data table compiler
10 support as well as a new version of the MPST template.
12 AcpiGetObjectInfo: Enhanced the device object support to include the ACPI
13 5.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID
14 methods: _HID, _CID, and _UID.
16 Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed
17 ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent
18 name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId)
19 names for their various drivers. Affects the AcpiGetObjectInfo external
20 interface, and other internal interfaces as well.
22 Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME.
23 This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME
24 on machines that support non-aligned transfers. Optimizes for this case
25 rather than using a strncpy. With assistance from Zheng Lv.
27 Resource Manager: Small fix for buffer size calculation. Fixed a one byte
28 error in the output buffer calculation. Feng Tang. ACPICA BZ 849.
30 Added a new debug print message for AML mutex objects that are force-
31 released. At control method termination, any currently acquired mutex
32 objects are force-released. Adds a new debug-only message for each one
35 Audited/updated all ACPICA return macros and the function debug depth
36 counter: 1) Ensure that all functions that use the various TRACE macros
37 also use the appropriate ACPICA return macros. 2) Ensure that all normal
38 return statements surround the return expression (value) with parens to
39 ensure consistency across the ACPICA code base. Guan Chao, Tang Feng,
40 Zheng Lv, Bob Moore. ACPICA Bugzilla 972.
42 Global source code changes/maintenance: All extra lines at the start and
43 end of each source file have been removed for consistency. Also, within
44 comments, all new sentences start with a single space instead of a double
45 space, again for consistency across the code base.
47 Example Code and Data Size: These are the sizes for the OS-independent
48 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
49 debug version of the code includes the debug output trace mechanism and
50 has a much larger code and data size.
53 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
54 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
56 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
57 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
60 2) iASL Compiler/Disassembler and Tools:
62 AcpiExec: Improved the algorithm used for memory leak/corruption
63 detection. Added some intelligence to the code that maintains the global
64 list of allocated memory. The list is now ordered by allocated memory
65 address, significantly improving performance. When running AcpiExec on
66 the ASLTS test suite, speed improvements of 3X to 5X are seen, depending
67 on the platform and/or the environment. Note, this performance
68 enhancement affects the AcpiExec utility only, not the kernel-resident
71 Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For
72 the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix
73 incorrect table offset reported for invalid opcodes. Report the original
74 32-bit value for bad ACPI_NAMEs (as well as the repaired name.)
76 Disassembler: Enhanced the -vt option to emit the binary table data in
77 hex format to assist with debugging.
79 Fixed a potential filename buffer overflow in osunixdir.c. Increased the
80 size of file structure. Colin Ian King.
82 ----------------------------------------
83 13 September 2012. Summary of changes for version 20120913:
86 1) ACPICA Kernel-resident Subsystem:
88 ACPI 5.0: Added two new notify types for the Hardware Error Notification
89 Structure within the Hardware Error Source Table (HEST) table -- CMCI(5)
93 Table Manager: Merged/removed duplicate code in the root table resize
94 functions. One function is external, the other is internal. Lv Zheng,
98 Makefiles: Completely removed the obsolete "Linux" makefiles under
99 acpica/generate/linux. These makefiles are obsolete and have been replaced
101 the generic unix makefiles under acpica/generate/unix.
103 Makefiles: Ensure that binary files always copied properly. Minor rule
105 to ensure that the final binary output files are always copied up to the
106 appropriate binary directory (bin32 or bin64.)
108 Example Code and Data Size: These are the sizes for the OS-independent
109 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
111 version of the code includes the debug output trace mechanism and has a
113 larger code and data size.
116 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
117 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
119 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
120 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
123 2) iASL Compiler/Disassembler and Tools:
125 Disassembler: Fixed a possible fault during the disassembly of resource
126 descriptors when a second parse is required because of the invocation of
127 external control methods within the table. With assistance from
128 adq@lidskialf.net. ACPICA BZ 976.
130 iASL: Fixed a namepath optimization problem. An error can occur if the
132 node that contains the namepath to be optimized does not have a parent
134 that is a named object. This change fixes the problem.
136 iASL: Fixed a regression where the AML file is not deleted on errors. The
138 output file should be deleted if there are any errors during the compiler.
140 only exception is if the -f (force output) option is used. ACPICA BZ 974.
142 iASL: Added a feature to automatically increase internal line buffer
144 Via realloc(), automatically increase the internal line buffer sizes as
145 necessary to support very long source code lines. The current version of
147 preprocessor requires a buffer long enough to contain full source code
149 This change increases the line buffer(s) if the input lines go beyond the
150 current buffer size. This eliminates errors that occurred when a source
152 line was longer than the buffer.
154 iASL: Fixed a problem with constant folding in method declarations. The
155 SyncLevel term is a ByteConstExpr, and incorrect code would be generated
157 Type3 opcode was used.
159 Debugger: Improved command help support. For incorrect argument count,
161 full help for the command. For help command itself, allow an argument to
164 Test Suites: Several bug fixes for the ASLTS suite reduces the number of
165 errors during execution of the suite. Guan Chao.
167 ----------------------------------------
168 16 August 2012. Summary of changes for version 20120816:
171 1) ACPICA Kernel-resident Subsystem:
173 Removed all use of the deprecated _GTS and _BFS predefined methods. The
175 (Going To Sleep) and _BFS (Back From Sleep) methods are essentially
176 deprecated and will probably be removed from the ACPI specification.
178 does not invoke them, and reportedly never will. The final nail in the
180 is that the ACPI specification states that these methods must be run with
181 interrupts off, which is not going to happen in a kernel interpreter.
183 Linux has removed all use of the methods also. It was discovered that
184 invoking these functions caused failures on some machines, probably
186 they were never tested since Windows does not call them. Affects two
188 interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng.
191 Implemented support for complex bit-packed buffers returned from the _PLD
192 (Physical Location of Device) predefined method. Adds a new external
193 interface, AcpiDecodePldBuffer that parses the buffer into a more usable C
194 structure. Note: C Bitfields cannot be used for this type of predefined
195 structure since the memory layout of individual bitfields is not defined
197 the C language. In addition, there are endian concerns where a compiler
199 change the bitfield ordering based on the machine type. The new ACPICA
200 interface eliminates these issues, and should be called after _PLD is
201 executed. ACPICA BZ 954.
203 Implemented a change to allow a scope change to root (via "Scope (\)")
205 execution of module-level ASL code (code that is executed at table load
208 Added the Windows8/Server2012 string for the _OSI method. This change adds
210 new _OSI string, "Windows 2012" for both Windows 8 and Windows Server
213 Added header support for the new ACPI tables DBG2 (Debug Port Table Type
215 and CSRT (Core System Resource Table).
217 Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined
218 names. This simplifies access to the buffers returned by these predefined
219 names. Adds a new file, include/acbuffer.h. ACPICA BZ 956.
221 GPE support: Removed an extraneous parameter from the various low-level
222 internal GPE functions. Tang Feng.
224 Removed the linux makefiles from the unix packages. The generate/linux
225 makefiles are obsolete and have been removed from the unix tarball release
226 packages. The replacement makefiles are under generate/unix, and there is
228 top-level makefile under the main acpica directory. ACPICA BZ 967, 912.
230 Updates for Unix makefiles:
231 1) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven.
232 2) Update linker flags (move to end of command line) for AcpiExec utility.
235 Split ACPICA initialization functions to new file, utxfinit.c. Split from
236 utxface.c to improve modularity and reduce file size.
238 Example Code and Data Size: These are the sizes for the OS-independent
239 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
240 debug version of the code includes the debug output trace mechanism and
242 much larger code and data size.
245 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
246 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
248 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
249 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
252 2) iASL Compiler/Disassembler and Tools:
254 iASL: Fixed a problem with constant folding for fixed-length constant
255 expressions. The constant-folding code was not being invoked for constant
256 expressions that allow the use of type 3/4/5 opcodes to generate constants
257 for expressions such as ByteConstExpr, WordConstExpr, etc. This could
259 in the generation of invalid AML bytecode. ACPICA BZ 970.
261 iASL: Fixed a generation issue on newer versions of Bison. Newer versions
262 apparently automatically emit some of the necessary externals. This change
263 handles these versions in order to eliminate generation warnings.
265 Disassembler: Added support to decode the DBG2 and CSRT ACPI tables.
267 Disassembler: Add support to decode _PLD buffers. The decoded buffer
269 within comments in the output file.
271 Debugger: Fixed a regression with the "Threads" command where
272 AE_BAD_PARAMETER was always returned.
274 ----------------------------------------
275 11 July 2012. Summary of changes for version 20120711:
277 1) ACPICA Kernel-resident Subsystem:
279 Fixed a possible fault in the return package object repair code. Fixes a
280 problem that can occur when a lone package object is wrapped with an outer
281 package object in order to force conformance to the ACPI specification.
283 affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX,
287 Removed code to disable/enable bus master arbitration (ARB_DIS bit in the
288 PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the
289 ARB_DIS bit must be implemented in the host-dependent C3 processor power
291 support. Note, ARB_DIS is obsolete and only applies to older chipsets,
293 Intel and other vendors. (for Intel: ICH4-M and earlier)
295 This change removes the code to disable/enable bus master arbitration
297 suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register
299 resume problems on some machines. The change has been in use for over
303 Implemented two new external interfaces to support host-directed dynamic
305 table load and unload. They are intended to simplify the host
308 AcpiLoadTable: Load an SSDT from a buffer into the namespace.
309 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the
311 See the ACPICA reference for additional details. Adds one new file,
312 components/tables/tbxfload.c
314 Implemented and deployed two new interfaces for errors and warnings that
316 known to be caused by BIOS/firmware issues:
317 AcpiBiosError: Prints "ACPI Firmware Error" message.
318 AcpiBiosWarning: Prints "ACPI Firmware Warning" message.
319 Deployed these new interfaces in the ACPICA Table Manager code for ACPI
321 and FADT errors. Additional deployment to be completed as appropriate in
323 future. The associated conditional macros are ACPI_BIOS_ERROR and
324 ACPI_BIOS_WARNING. See the ACPICA reference for additional details. ACPICA
328 Implicit notify support: ensure that no memory allocation occurs within a
329 critical region. This fix moves a memory allocation outside of the time
331 spinlock is held. Fixes issues on systems that do not allow this behavior.
334 Split exception code utilities and tables into a new file,
337 Example Code and Data Size: These are the sizes for the OS-independent
338 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
340 version of the code includes the debug output trace mechanism and has a
342 larger code and data size.
345 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
346 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
348 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
349 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
352 2) iASL Compiler/Disassembler and Tools:
354 iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead
358 Debugger: Enhanced the "tables" command to emit additional information
360 the current set of ACPI tables, including the owner ID and flags decode.
362 Debugger: Reimplemented the "unload" command to use the new
363 AcpiUnloadParentTable external interface. This command was disable
365 due to need for an unload interface.
367 AcpiHelp: Added a new option to decode ACPICA exception codes. The -e
369 will decode 16-bit hex status codes (ACPI_STATUS) to name strings.
371 ----------------------------------------
372 20 June 2012. Summary of changes for version 20120620:
375 1) ACPICA Kernel-resident Subsystem:
377 Implemented support to expand the "implicit notify" feature to allow
379 devices to be notified by a single GPE. This feature automatically
381 runtime device notification in the absence of a BIOS-provided GPE control
382 method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit
384 provided by ACPICA for Windows compatibility, and is a workaround for BIOS
386 code errors. See the description of the AcpiSetupGpeForWake interface in
388 APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918.
390 Changed some comments and internal function names to simplify and ensure
391 correctness of the Linux code translation. No functional changes.
393 Example Code and Data Size: These are the sizes for the OS-independent
394 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
396 version of the code includes the debug output trace mechanism and has a
398 larger code and data size.
401 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
402 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
404 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
405 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
408 2) iASL Compiler/Disassembler and Tools:
410 Disassembler: Added support to emit short, commented descriptions for the
412 predefined names in order to improve the readability of the disassembled
413 output. ACPICA BZ 959. Changes include:
414 1) Emit descriptions for all standard predefined names (_INI, _STA,
417 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.)
418 3) Emit descriptions for the resource descriptor names (_MIN, _LEN,
421 AcpiSrc: Fixed several long-standing Linux code translation issues.
423 descriptions in function headers are now translated properly to lower case
425 underscores. ACPICA BZ 961. Also fixes translation problems such as these:
430 local_fADT -> local_FADT
431 execute_oSI -> execute_OSI
433 iASL: Fixed a problem where null bytes were inadvertently emitted into
437 iASL: Added the existing debug options to the standard help screen. There
439 no longer two different help screens. ACPICA BZ 957.
441 AcpiHelp: Fixed some typos in the various predefined name descriptions.
443 expand some of the descriptions where appropriate.
445 iASL: Fixed the -ot option (display compile times/statistics). Was not
447 properly for standard output; only worked for the debug file case.
449 ----------------------------------------
450 18 May 2012. Summary of changes for version 20120518:
453 1) ACPICA Core Subsystem:
455 Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is
457 to block until asynchronous events such as notifies and GPEs have
459 Within ACPICA, it is only called before a notify or GPE handler is
460 removed/uninstalled. It also may be useful for the host OS within related
461 drivers such as the Embedded Controller driver. See the ACPICA reference
463 additional information. ACPICA BZ 868.
465 ACPI Tables: Added a new error message for a possible overflow failure
467 the conversion of FADT 32-bit legacy register addresses to internal common
469 bit GAS structure representation. The GAS has a one-byte "bit length"
471 thus limiting the register length to 255 bits. ACPICA BZ 953.
473 Example Code and Data Size: These are the sizes for the OS-independent
474 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
476 version of the code includes the debug output trace mechanism and has a
478 larger code and data size.
481 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
482 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
484 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
485 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
488 2) iASL Compiler/Disassembler and Tools:
490 iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL
492 This keyword was added late in the ACPI 5.0 release cycle and was not
493 implemented until now.
495 Disassembler: Added support for Operation Region externals. Adds missing
496 support for operation regions that are defined in another table, and
497 referenced locally via a Field or BankField ASL operator. Now generates
499 correct External statement.
501 Disassembler: Several additional fixes for the External() statement
503 related to some ASL operators. Also, order the External() statements
504 alphabetically in the disassembler output. Fixes the External() generation
506 the Create* field, Alias, and Scope operators:
507 1) Create* buffer field operators - fix type mismatch warning on
509 2) Alias - implement missing External support
510 3) Scope - fix to make sure all necessary externals are emitted.
512 iASL: Improved pathname support. For include files, merge the prefix
514 with the file pathname and eliminate unnecessary components. Convert
515 backslashes in all pathnames to forward slashes, for readability. Include
517 pathname changes affect both #include and Include() type operators.
519 iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the
521 of a valid line by inserting a newline and then returning the EOF during
523 next call to GetNextLine. Prevents the line from being ignored due to EOF
526 iASL: Implemented some changes to enhance the IDE support (-vi option.)
528 and Warning messages are now correctly recognized for both the source code
529 browser and the global error and warning counts.
531 ----------------------------------------
532 20 April 2012. Summary of changes for version 20120420:
535 1) ACPICA Core Subsystem:
537 Implemented support for multiple notify handlers. This change adds support
539 allow multiple system and device notify handlers on Device, Thermal Zone,
541 Processor objects. This can simplify the host OS notification
543 Also re-worked and restructured the entire notify support code to simplify
544 handler installation, handler removal, notify event queuing, and notify
545 dispatch to handler(s). Note: there can still only be two global notify
546 handlers - one for system notifies and one for device notifies. There are
548 changes to the existing handler install/remove interfaces. Lin Ming, Bob
549 Moore, Rafael Wysocki.
551 Fixed a regression in the package repair code where the object reference
552 count was calculated incorrectly. Regression was introduced in the commit
553 "Support to add Package wrappers".
555 Fixed a couple possible memory leaks in the AML parser, in the error
557 path. Jesper Juhl, Lin Ming.
559 Example Code and Data Size: These are the sizes for the OS-independent
560 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
561 debug version of the code includes the debug output trace mechanism and
563 much larger code and data size.
566 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
567 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
569 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
570 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
573 2) iASL Compiler/Disassembler and Tools:
575 iASL: Fixed a problem with the resource descriptor support where the
577 of the StartDependentFn and StartDependentFnNoPrio descriptors were not
578 included in cumulative descriptor offset, resulting in incorrect values
580 resource tags within resource descriptors appearing after a
582 descriptor. Reported by Petr Vandrovec. ACPICA BZ 949.
584 iASL and Preprocessor: Implemented full support for the #line directive to
585 correctly track original source file line numbers through the .i
587 output file - for error and warning messages.
589 iASL: Expand the allowable byte constants for address space IDs.
591 the allowable range was 0x80-0xFF (user-defined spaces), now the range is
592 0x0A-0xFF to allow for custom and new IDs without changing the compiler.
594 iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948.
596 iASL: Add option to completely disable the preprocessor (-Pn).
598 iASL: Now emit all error/warning messages to standard error (stderr) by
599 default (instead of the previous stdout).
601 ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch().
603 for resource descriptor offset fix above. Update/cleanup error output
604 routines. Enable and send iASL errors/warnings to an error logfile
605 (error.txt). Send all other iASL output to a logfile (compiler.txt). Fixed
606 several extraneous "unrecognized operator" messages.
608 ----------------------------------------
609 20 March 2012. Summary of changes for version 20120320:
612 1) ACPICA Core Subsystem:
614 Enhanced the sleep/wake interfaces to optionally execute the _GTS method
615 (Going To Sleep) and the _BFS method (Back From Sleep). Windows apparently
616 does not execute these methods, and therefore these methods are often
617 untested. It has been seen on some systems where the execution of these
618 methods causes errors and also prevents the machine from entering S5. It
620 therefore suggested that host operating systems do not execute these
622 by default. In the future, perhaps these methods can be optionally
624 based on the age of the system and/or what is the newest version of
626 that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState
628 AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin
631 Fixed a problem where the length of the local/common FADT was set too
633 The local FADT table length cannot be set to the common length until the
634 original length has been examined. There is code that checks the table
636 and sets various fields appropriately. This can affect older machines with
637 early FADT versions. For example, this can cause inadvertent writes to the
638 CST_CNT register. Julian Anastasov.
640 Fixed a mapping issue related to a physical table override. Use the
642 mapping mechanism for tables loaded via the physical override OSL
644 This allows for early mapping before the virtual memory manager is
646 Thomas Renninger, Bob Moore.
648 Enhanced the automatic return-object repair code: Repair a common problem
650 predefined methods that are defined to return a variable-length Package of
651 sub-objects. If there is only one sub-object, some BIOS ASL code
653 simply returns the single object instead of a Package with one sub-object.
654 This new support will repair this error by wrapping a Package object
656 the original object, creating the correct and expected Package with one
658 object. Names that can be repaired in this manner include: _ALR, _CSD,
660 _MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ
663 Changed the exception code returned for invalid ACPI paths passed as
664 parameters to external interfaces such as AcpiEvaluateObject. Was
665 AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME.
667 Example Code and Data Size: These are the sizes for the OS-independent
668 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
670 version of the code includes the debug output trace mechanism and has a
672 larger code and data size.
675 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
676 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
678 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
679 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
682 2) iASL Compiler/Disassembler and Tools:
684 iASL: Added the infrastructure and initial implementation of a integrated
686 like preprocessor. This will simplify BIOS development process by
688 the need for a separate preprocessing step during builds. On Windows, it
690 eliminates the need to install a separate C compiler. ACPICA BZ 761. Some
691 features including full #define() macro support are still under
693 These preprocessor directives are supported:
706 In addition, these new command line options are supported:
707 -D <symbol> Define symbol for preprocessor use
708 -li Create preprocessed output file (*.i)
709 -P Preprocess only and create preprocessor output file (*.i)
711 Table Compiler: Fixed a problem where the equals operator within an
713 did not work properly.
715 Updated iASL to use the current versions of Bison/Flex. Updated the
717 project file to invoke these tools from the standard location. ACPICA BZ
720 Flex for Windows: V2.5.4
721 Bison for Windows: V2.4.1
723 ----------------------------------------
724 15 February 2012. Summary of changes for version 20120215:
727 1) ACPICA Core Subsystem:
729 There have been some major changes to the sleep/wake support code, as
730 described below (a - e).
732 a) The AcpiLeaveSleepState has been split into two interfaces, similar to
733 AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is
734 AcpiLeaveSleepStatePrep. This allows the host to perform actions between
736 time the _BFS method is called and the _WAK method is called. NOTE: all
738 must update their wake/resume code or else sleep/wake will not work
742 b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the
744 method. Some machines require that the GPEs are enabled before the _WAK
746 is executed. Thomas Renninger.
748 c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status) bit.
749 Some BIOS code assumes that WAK_STS will be cleared on resume and use it
751 determine whether the system is rebooting or resuming. Matthew Garrett.
753 d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From
755 match the ACPI specification requirement. Rafael Wysocki.
757 e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl
758 registers within the V5 FADT. This support adds two new files:
759 hardware/hwesleep.c implements the support for the new registers. Moved
761 sleep/wake external interfaces to hardware/hwxfsleep.c.
764 Added a new OSL interface for ACPI table overrides,
765 AcpiOsPhysicalTableOverride. This interface allows the host to override a
766 table via a physical address, instead of the logical address required by
767 AcpiOsTableOverride. This simplifies the host implementation. Initial
768 implementation by Thomas Renninger. The ACPICA implementation creates a
770 shared function for table overrides that attempts both a logical and a
773 Expanded the OSL memory read/write interfaces to 64-bit data
774 (AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory
775 transfer support for GAS register structures passed to AcpiRead and
778 Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a
780 build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC)
782 See the ACPICA reference for details. ACPICA BZ 942. This option removes
784 10% of the code and 5% of the static data, and the following hardware ACPI
785 features become unavailable:
786 PM Event and Control registers
787 SCI interrupt (and handler)
789 General Purpose Events (GPEs)
792 FACS table (Waking vectors and Global Lock)
794 Updated the unix tarball directory structure to match the ACPICA git
796 tree. This ensures that the generic unix makefiles work properly (in
797 generate/unix). Also updated the Linux makefiles to match. ACPICA BZ 867.
799 Updated the return value of the _REV predefined method to integer value 5
801 reflect ACPI 5.0 support.
803 Moved the external ACPI PM timer interface prototypes to the public
805 file where they belong.
807 Example Code and Data Size: These are the sizes for the OS-independent
808 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
810 version of the code includes the debug output trace mechanism and has a
812 larger code and data size.
815 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
816 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
818 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
819 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
822 2) iASL Compiler/Disassembler and Tools:
824 Disassembler: Fixed a problem with the new ACPI 5.0 serial resource
825 descriptors (I2C, SPI, UART) where the resource produce/consumer bit was
826 incorrectly displayed.
828 AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI
831 ----------------------------------------
832 11 January 2012. Summary of changes for version 20120111:
835 1) ACPICA Core Subsystem:
837 Implemented a new mechanism to allow host device drivers to check for
839 range conflicts with ACPI Operation Regions. Both SystemMemory and
841 address spaces are supported. A new external interface,
842 AcpiCheckAddressRange,
843 allows drivers to check an address range against the ACPI namespace. See
845 ACPICA reference for additional details. Adds one new file,
846 utilities/utaddress.c. Lin Ming, Bob Moore.
848 Fixed several issues with the ACPI 5.0 FADT support: Add the sleep Control
850 Status registers, update the ACPI 5.0 flags, and update internal data
851 structures to handle an FADT larger than 256 bytes. The size of the ACPI
855 Updated all ACPICA copyrights and signons to 2012. Added the 2012
857 all module headers and signons, including the standard Linux header. This
858 affects virtually every file in the ACPICA core subsystem, iASL compiler,
860 all ACPICA utilities.
862 Example Code and Data Size: These are the sizes for the OS-independent
863 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
865 version of the code includes the debug output trace mechanism and has a
867 larger code and data size.
870 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
871 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
873 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
874 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
877 2) iASL Compiler/Disassembler and Tools:
879 Disassembler: fixed a problem with the automatic resource tag generation
880 support. Fixes a problem where the resource tags are inadvertently not
881 constructed if the table being disassembled contains external references
883 control methods. Moved the actual construction of the tags to after the
885 namespace is constructed (after 2nd parse is invoked due to external
887 method references.) ACPICA BZ 941.
889 Table Compiler: Make all "generic" operators caseless. These are the
891 like UINT8, String, etc. Making these caseless improves ease-of-use.
895 ----------------------------------------
896 23 November 2011. Summary of changes for version 20111123:
900 This release contains full support for the ACPI 5.0 specification, as
903 Reduced Hardware Support:
904 -------------------------
906 This support allows for ACPI systems without the usual ACPI hardware. This
907 support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA
909 not attempt to initialize or use any of the usual ACPI hardware. Note,
911 this flag is set, all of the following ACPI hardware is assumed to be not
912 present and is not initialized or accessed:
914 General Purpose Events (GPEs)
915 Fixed Events (PM1a/PM1b and PM Control)
916 Power Management Timer and Console Buttons (power/sleep)
917 Real-time Clock Alarm
919 System Control Interrupt (SCI)
920 The FACS is assumed to be non-existent
925 All new tables and updates to existing tables are fully supported in the
926 ACPICA headers (for use by device drivers), the disassembler, and the iASL
927 Data Table Compiler. ACPI 5.0 defines these new tables:
929 BGRT /* Boot Graphics Resource Table */
930 DRTM /* Dynamic Root of Trust for Measurement table */
931 FPDT /* Firmware Performance Data Table */
932 GTDT /* Generic Timer Description Table */
933 MPST /* Memory Power State Table */
934 PCCT /* Platform Communications Channel Table */
935 PMTT /* Platform Memory Topology Table */
936 RASF /* RAS Feature table */
938 Operation Regions/SpaceIDs:
939 ---------------------------
941 All new operation regions are fully supported by the iASL compiler, the
942 disassembler, and the ACPICA runtime code (for dispatch to region
944 The new operation region Space IDs are:
949 Resource Descriptors:
950 ---------------------
952 All new ASL resource descriptors are fully supported by the iASL compiler,
954 ASL/AML disassembler, and the ACPICA runtime Resource Manager code
956 all new predefined resource tags). New descriptors are:
965 ASL/AML Operators, New and Modified:
966 ------------------------------------
968 One new operator is added, the Connection operator, which is used to
970 a GeneralPurposeIo or GenericSerialBus resource descriptor with individual
971 field objects within an operation region. Several new protocols are
973 with the AccessAs operator. All are fully supported by the iASL compiler,
974 disassembler, and runtime ACPICA AML interpreter:
976 Connection // Declare Field Connection attributes
977 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol
978 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes Protocol
979 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol
980 RawDataBuffer // Data type for Vendor Data
983 Predefined ASL/AML Objects:
984 ---------------------------
986 All new predefined objects/control-methods are supported by the iASL
988 and the ACPICA runtime validation/repair (arguments and return values.)
990 predefined names include the following:
992 Standard Predefined Names (Objects or Control Methods):
993 _AEI, _CLS, _CPC, _CWS, _DEP,
994 _DLM, _EVT, _GCP, _CRT, _GWS,
995 _HRV, _PRE, _PSE, _SRT, _SUB.
997 Resource Tags (Names used to access individual fields within resource
999 _DBT, _DPL, _DRS, _END, _FLC,
1000 _IOR, _LIN, _MOD, _PAR, _PHA,
1001 _PIN, _PPI, _POL, _RXL, _SLV,
1002 _SPE, _STB, _TXL, _VEN.
1004 ACPICA External Interfaces:
1005 ---------------------------
1007 Several new interfaces have been defined for use by ACPI-related device
1008 drivers and other host OS services:
1010 AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS
1012 acquire and release AML mutexes that are defined in the DSDT/SSDT tables
1013 provided by the BIOS. They are intended to be used in conjunction with the
1014 ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level
1015 mutual exclusion with the AML code/interpreter.
1017 AcpiGetEventResources: Returns the (formatted) resource descriptors as
1019 by the ACPI 5.0 _AEI object (ACPI Event Information). This object
1021 resource descriptors associated with hardware-reduced platform events,
1023 to the AcpiGetCurrentResources interface.
1025 Operation Region Handlers: For General Purpose IO and Generic Serial Bus
1026 operation regions, information about the Connection() object and any
1028 length information is passed to the region handler within the Context
1031 AcpiBufferToResource: This interface converts a raw AML buffer containing
1033 resource template or resource descriptor to the ACPI_RESOURCE internal
1035 suitable for use by device drivers. Can be used by an operation region
1037 to convert the Connection() buffer object into a ACPI_RESOURCE.
1039 Miscellaneous/Tools/TestSuites:
1040 -------------------------------
1042 Support for extended _HID names (Four alpha characters instead of three).
1043 Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities.
1044 Support for ACPI 5.0 features in the ASLTS test suite.
1045 Fully updated documentation (ACPICA and iASL reference documents.)
1047 ACPI Table Definition Language:
1048 -------------------------------
1050 Support for this language was implemented and released as a subsystem of
1052 iASL compiler in 2010. (See the iASL compiler User Guide.)
1055 Non-ACPI 5.0 changes for this release:
1056 --------------------------------------
1058 1) ACPICA Core Subsystem:
1060 Fix a problem with operation region declarations where a failure can occur
1062 the region name and an argument that evaluates to an object (such as the
1063 region address) are in different namespace scopes. Lin Ming, ACPICA BZ
1066 Do not abort an ACPI table load if an invalid space ID is found within.
1068 will be caught later if the offending method is executed. ACPICA BZ 925.
1070 Fixed an issue with the FFixedHW space ID where the ID was not always
1071 recognized properly (Both ACPICA and iASL). ACPICA BZ 926.
1073 Fixed a problem with the 32-bit generation of the unix-specific OSL
1074 (osunixxf.c). Lin Ming, ACPICA BZ 936.
1076 Several changes made to enable generation with the GCC 4.6 compiler.
1080 New error messages: Unsupported I/O requests (not 8/16/32 bit), and
1082 field registers out-of-range.
1084 2) iASL Compiler/Disassembler and Tools:
1086 iASL: Implemented the __PATH__ operator, which returns the full pathname
1088 the current source file.
1090 AcpiHelp: Automatically display expanded keyword information for all ASL
1093 Debugger: Add "Template" command to disassemble/dump resource template
1096 Added a new master script to generate and execute the ASLTS test suite.
1097 Automatically handles 32- and 64-bit generation. See tests/aslts.sh
1099 iASL: Fix problem with listing generation during processing of the
1101 operator where AML listing was disabled until the entire Switch block was
1104 iASL: Improve support for semicolon statement terminators. Fix "invalid
1105 character" message for some cases when the semicolon is used. Semicolons
1107 now allowed after every <Term> grammar element. ACPICA BZ 927.
1109 iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ
1112 Disassembler: Fix problem with disassembly of the DataTableRegion operator
1113 where an inadvertent "Unhandled deferred opcode" message could be
1116 3) Example Code and Data Size
1118 These are the sizes for the OS-independent acpica.lib produced by the
1119 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
1120 includes the debug output trace mechanism and has a much larger code and
1125 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
1126 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
1128 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
1129 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
1131 ----------------------------------------
1132 22 September 2011. Summary of changes for version 20110922:
1136 Support for ACPI 5.0 in ACPICA has been underway for several months and
1138 be released at the same time that ACPI 5.0 is officially released.
1140 The ACPI 5.0 specification is on track for release in the next few months.
1142 1) ACPICA Core Subsystem:
1144 Fixed a problem where the maximum sleep time for the Sleep() operator was
1145 intended to be limited to two seconds, but was inadvertently limited to 20
1148 Linux and Unix makefiles: Added header file dependencies to ensure correct
1149 generation of ACPICA core code and utilities. Also simplified the
1151 considerably through the use of the vpath variable to specify search
1155 2) iASL Compiler/Disassembler and Tools:
1157 iASL: Implemented support to check the access length for all fields
1159 access named Resource Descriptor fields. For example, if a resource field
1161 defined to be two bits, a warning is issued if a CreateXxxxField() is used
1162 with an incorrect bit length. This is implemented for all current resource
1163 descriptor names. ACPICA BZ 930.
1165 Disassembler: Fixed a byte ordering problem with the output of 24-bit and
1169 iASL: Fixed a couple of issues associated with variable-length package
1170 objects. 1) properly handle constants like One, Ones, Zero -- do not make
1172 VAR_PACKAGE when these are used as a package length. 2) Allow the
1174 opcode (in addition to PACKAGE) when validating object types for
1178 iASL: Emit statistics for all output files (instead of just the ASL input
1180 AML output). Includes listings, hex files, etc.
1182 iASL: Added -G option to the table compiler to allow the compilation of
1184 ACPI tables. The only part of a table that is required is the standard 36-
1188 AcpiXtract: Ported to the standard ACPICA environment (with ACPICA
1190 which also adds correct 64-bit support. Also, now all output filenames are
1191 completely lower case.
1193 AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when
1194 loading table files. A warning is issued for any such tables. The only
1195 exception is an FADT. This also fixes a possible fault when attempting to
1197 non-AML tables. ACPICA BZ 932.
1199 AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where a
1200 missing table terminator could cause a fault when using the -p option.
1202 AcpiSrc: Fixed a possible divide-by-zero fault when generating file
1205 3) Example Code and Data Size
1207 These are the sizes for the OS-independent acpica.lib produced by the
1208 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
1209 includes the debug output trace mechanism and has a much larger code and
1213 Previous Release (VC 9.0):
1214 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
1215 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
1216 Current Release (VC 9.0):
1217 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
1218 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
1221 ----------------------------------------
1222 23 June 2011. Summary of changes for version 20110623:
1224 1) ACPI CA Core Subsystem:
1226 Updated the predefined name repair mechanism to not attempt repair of a
1228 return object if a _PSS object is present. We can only sort the _TSS
1230 package if there is no _PSS within the same scope. This is because if _PSS
1232 present, the ACPI specification dictates that the _TSS Power Dissipation
1234 is to be ignored, and therefore some BIOSs leave garbage values in the
1236 Power field(s). In this case, it is best to just return the _TSS package
1238 is. Reported by, and fixed with assistance from Fenghua Yu.
1240 Added an option to globally disable the control method return value
1242 and repair. This runtime option can be used to disable return value repair
1244 this is causing a problem on a particular machine. Also added an option to
1245 AcpiExec (-dr) to set this disable flag.
1247 All makefiles and project files: Major changes to improve generation of
1249 tools. ACPICA BZ 912:
1250 Reduce default optimization levels to improve compatibility
1251 For Linux, add strict-aliasing=0 for gcc 4
1252 Cleanup and simplify use of command line defines
1253 Cleanup multithread library support
1254 Improve usage messages
1256 Linux-specific header: update handling of THREAD_ID and pthread. For the
1258 bit case, improve casting to eliminate possible warnings, especially with
1262 Example Code and Data Size: These are the sizes for the OS-independent
1263 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1265 version of the code includes the debug output trace mechanism and has a
1267 larger code and data size.
1269 Previous Release (VC 9.0):
1270 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
1271 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
1272 Current Release (VC 9.0):
1273 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
1274 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
1276 2) iASL Compiler/Disassembler and Tools:
1278 With this release, a new utility named "acpihelp" has been added to the
1280 package. This utility summarizes the ACPI specification chapters for the
1282 and AML languages. It generates under Linux/Unix as well as Windows, and
1283 provides the following functionality:
1284 Find/display ASL operator(s) -- with description and syntax.
1285 Find/display ASL keyword(s) -- with exact spelling and descriptions.
1286 Find/display ACPI predefined name(s) -- with description, number
1287 of arguments, and the return value data type.
1288 Find/display AML opcode name(s) -- with opcode, arguments, and
1290 Decode/display AML opcode -- with opcode name, arguments, and grammar.
1292 Service Layers: Make multi-thread support configurable. Conditionally
1294 the multi-thread support so that threading libraries will not be linked if
1296 necessary. The only tool that requires multi-thread support is AcpiExec.
1298 iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions
1300 Bison appear to want the interface to yyerror to be a const char * (or at
1301 least this is a problem when generating iASL on some systems.) ACPICA BZ
1305 Tools: Fix for systems where O_BINARY is not defined. Only used for
1307 versions of the tools.
1309 ----------------------------------------
1310 27 May 2011. Summary of changes for version 20110527:
1312 1) ACPI CA Core Subsystem:
1314 ASL Load() operator: Reinstate most restrictions on the incoming ACPI
1316 signature. Now, only allow SSDT, OEMx, and a null signature. History:
1317 1) Originally, we checked the table signature for "SSDT" or "PSDT".
1318 (PSDT is now obsolete.)
1319 2) We added support for OEMx tables, signature "OEM" plus a fourth
1320 "don't care" character.
1321 3) Valid tables were encountered with a null signature, so we just
1322 gave up on validating the signature, (05/2008).
1323 4) We encountered non-AML tables such as the MADT, which caused
1324 interpreter errors and kernel faults. So now, we once again allow
1325 only SSDT, OEMx, and now, also a null signature. (05/2011).
1327 Added the missing _TDL predefined name to the global name list in order to
1328 enable validation. Affects both the core ACPICA code and the iASL
1331 Example Code and Data Size: These are the sizes for the OS-independent
1332 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1334 version of the code includes the debug output trace mechanism and has a
1336 larger code and data size.
1338 Previous Release (VC 9.0):
1339 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
1340 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
1341 Current Release (VC 9.0):
1342 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
1343 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
1345 2) iASL Compiler/Disassembler and Tools:
1347 Debugger/AcpiExec: Implemented support for "complex" method arguments on
1349 debugger command line. This adds support beyond simple integers --
1351 Strings, Buffers, and Packages. Includes support for nested packages.
1352 Increased the default command line buffer size to accommodate these
1354 See the ACPICA reference for details and syntax. ACPICA BZ 917.
1356 Debugger/AcpiExec: Implemented support for "default" method arguments for
1358 Execute/Debug command. Now, the debugger will always invoke a control
1360 with the required number of arguments -- even if the command line
1362 none or insufficient arguments. It uses default integer values for any
1364 arguments. Also fixes a bug where only six method arguments maximum were
1365 supported instead of the required seven.
1367 Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine
1369 also return status in order to prevent buffer overruns. See the ACPICA
1370 reference for details and syntax. ACPICA BZ 921
1372 iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and
1373 makefiles to simplify support for the two different but similar parser
1374 generators, bison and yacc.
1376 Updated the generic unix makefile for gcc 4. The default gcc version is
1378 expected to be 4 or greater, since options specific to gcc 4 are used.
1380 ----------------------------------------
1381 13 April 2011. Summary of changes for version 20110413:
1383 1) ACPI CA Core Subsystem:
1385 Implemented support to execute a so-called "orphan" _REG method under the
1387 device. This change will force the execution of a _REG method underneath
1390 device even if there is no corresponding operation region of type
1391 EmbeddedControl. Fixes a problem seen on some machines and apparently is
1392 compatible with Windows behavior. ACPICA BZ 875.
1394 Added more predefined methods that are eligible for automatic NULL package
1395 element removal. This change adds another group of predefined names to the
1397 of names that can be repaired by having NULL package elements dynamically
1398 removed. This group are those methods that return a single variable-length
1399 package containing simple data types such as integers, buffers, strings.
1401 includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx,
1404 and _TZD. ACPICA BZ 914.
1406 Split and segregated all internal global lock functions to a new file,
1409 Updated internal address SpaceID for DataTable regions. Moved this
1412 id in preparation for ACPI 5.0 changes that will include some new space
1415 change should not affect user/host code.
1417 Example Code and Data Size: These are the sizes for the OS-independent
1419 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
1421 the code includes the debug output trace mechanism and has a much larger
1426 Previous Release (VC 9.0):
1427 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
1428 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
1429 Current Release (VC 9.0):
1430 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
1431 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
1433 2) iASL Compiler/Disassembler and Tools:
1435 iASL/DTC: Major update for new grammar features. Allow generic data types
1437 custom ACPI tables. Field names are now optional. Any line can be split to
1438 multiple lines using the continuation char (\). Large buffers now use
1440 continuation character(s) and no colon on the continuation lines. See the
1442 update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob
1445 iASL: Mark ASL "Return()" and the simple "Return" as "Null" return
1447 Since the parser stuffs a "zero" as the return value for these statements
1450 the underlying AML grammar), they were seen as "return with value" by the
1452 semantic checking. They are now seen correctly as "null" return
1455 iASL: Check if a_REG declaration has a corresponding Operation Region.
1457 check for each _REG to ensure that there is in fact a corresponding
1459 region declaration in the same scope. If not, the _REG method is not very
1461 since it probably won't be executed. ACPICA BZ 915.
1463 iASL/DTC: Finish support for expression evaluation. Added a new expression
1465 that implements c-style operator precedence and parenthesization. ACPICA
1469 Disassembler/DTC: Remove support for () and <> style comments in data
1472 that DTC has full expression support, we don't want to have comment
1475 start with a parentheses or a less-than symbol. Now, only the standard /*
1478 comments are supported, as well as the bracket [] comments.
1480 AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have
1482 headers in the acpidump file. Update the header validation to support
1484 tables. Problem introduced in previous AcpiXtract version in the change to
1485 support "wrong checksum" error messages emitted by acpidump utility.
1487 iASL: Add a * option to generate all template files (as a synonym for ALL)
1490 "iasl -T *" or "iasl -T ALL".
1492 iASL/DTC: Do not abort compiler on fatal errors. We do not want to
1494 abort the compiler on "fatal" errors, simply should abort the current
1496 This allows multiple compiles with a single (possibly wildcard) compiler
1499 ----------------------------------------
1500 16 March 2011. Summary of changes for version 20110316:
1502 1) ACPI CA Core Subsystem:
1504 Fixed a problem caused by a _PRW method appearing at the namespace root
1506 during the setup of wake GPEs. A fault could occur if a _PRW directly
1509 root object was passed to the AcpiSetupGpeForWake interface. Lin Ming.
1511 Implemented support for "spurious" Global Lock interrupts. On some
1513 global lock interrupt can occur without the pending flag being set. Upon a
1515 interrupt, we now ensure that a thread is actually waiting for the lock
1517 signaling GL availability. Rafael Wysocki, Bob Moore.
1519 Example Code and Data Size: These are the sizes for the OS-independent
1521 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
1523 the code includes the debug output trace mechanism and has a much larger
1528 Previous Release (VC 9.0):
1529 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
1530 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
1531 Current Release (VC 9.0):
1532 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
1533 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
1535 2) iASL Compiler/Disassembler and Tools:
1537 Implemented full support for the "SLIC" ACPI table. Includes support in
1539 header files, disassembler, table compiler, and template generator. Bob
1543 AcpiXtract: Correctly handle embedded comments and messages from AcpiDump.
1544 Apparently some or all versions of acpidump will occasionally emit a
1547 "Wrong checksum", etc., into the dump file. This was causing problems for
1548 AcpiXtract. ACPICA BZ 905.
1550 iASL: Fix the Linux makefile by removing an inadvertent double file
1554 AcpiExec: Update installation of operation region handlers. Install one
1556 for a user-defined address space. This is used by the ASL test suite
1559 ----------------------------------------
1560 11 February 2011. Summary of changes for version 20110211:
1562 1) ACPI CA Core Subsystem:
1564 Added a mechanism to defer _REG methods for some early-installed handlers.
1565 Most user handlers should be installed before call to AcpiEnableSubsystem.
1566 However, Event handlers and region handlers should be installed after
1567 AcpiInitializeObjects. Override handlers for the "default" regions should
1569 installed early, however. This change executes all _REG methods for the
1570 default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any
1571 chicken/egg issues between them. ACPICA BZ 848.
1573 Implemented an optimization for GPE detection. This optimization will
1575 ignore GPE registers that contain no enabled GPEs -- there is no need to
1576 read the register since this information is available internally. This
1577 becomes more important on machines with a large GPE space. ACPICA bugzilla
1578 884. Lin Ming. Suggestion from Joe Liu.
1580 Removed all use of the highly unreliable FADT revision field. The revision
1581 number in the FADT has been found to be completely unreliable and cannot
1583 trusted. Only the actual table length can be used to infer the version.
1585 change updates the ACPICA core and the disassembler so that both no longer
1586 even look at the FADT version and instead depend solely upon the FADT
1589 Fix an unresolved name issue for the no-debug and no-error-message source
1590 generation cases. The _AcpiModuleName was left undefined in these cases,
1592 it is actually needed as a parameter to some interfaces. Define
1593 _AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888.
1595 Split several large files (makefiles and project files updated)
1596 utglobal.c -> utdecode.c
1597 dbcomds.c -> dbmethod.c dbnames.c
1598 dsopcode.c -> dsargs.c dscontrol.c
1599 dsload.c -> dsload2.c
1600 aslanalyze.c -> aslbtypes.c aslwalks.c
1602 Example Code and Data Size: These are the sizes for the OS-independent
1603 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1604 debug version of the code includes the debug output trace mechanism and
1606 a much larger code and data size.
1608 Previous Release (VC 9.0):
1609 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
1610 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
1611 Current Release (VC 9.0):
1612 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
1613 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
1615 2) iASL Compiler/Disassembler and Tools:
1617 iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__.
1618 These are useful C-style macros with the standard definitions. ACPICA
1621 iASL/DTC: Added support for integer expressions and labels. Support for
1623 expressions for all integer fields in all ACPI tables. Support for labels
1625 "generic" portions of tables such as UEFI. See the iASL reference manual.
1627 Debugger: Added a command to display the status of global handlers. The
1628 "handlers" command will display op region, fixed event, and miscellaneous
1629 global handlers. installation status -- and for op regions, whether
1631 or user-installed handler will be used.
1633 iASL: Warn if reserved method incorrectly returns a value. Many predefined
1634 names are defined such that they do not return a value. If implemented as
1636 method, issue a warning if such a name explicitly returns a value. ACPICA
1639 iASL: Added detection of GPE method name conflicts. Detects a conflict
1641 there are two GPE methods of the form _Lxy and _Exy in the same scope.
1643 example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848.
1645 iASL/DTC: Fixed a couple input scanner issues with comments and line
1646 numbers. Comment remover could get confused and miss a comment ending.
1648 a problem with line counter maintenance.
1650 iASL/DTC: Reduced the severity of some errors from fatal to error. There
1652 no need to abort on simple errors within a field definition.
1654 Debugger: Simplified the output of the help command. All help output now
1656 a single screen, instead of help subcommands. ACPICA Bugzilla 897.
1658 ----------------------------------------
1659 12 January 2011. Summary of changes for version 20110112:
1661 1) ACPI CA Core Subsystem:
1663 Fixed a race condition between method execution and namespace walks that
1665 possibly cause a fault. The problem was apparently introduced in version
1666 20100528 as a result of a performance optimization that reduces the number
1668 namespace walks upon method exit by using the delete_namespace_subtree
1669 function instead of the delete_namespace_by_owner function used
1671 Bug is a missing namespace lock in the delete_namespace_subtree function.
1672 dana.myers@oracle.com
1674 Fixed several issues and a possible fault with the automatic "serialized"
1675 method support. History: This support changes a method to "serialized" on
1677 fly if the method generates an AE_ALREADY_EXISTS error, indicating the
1678 possibility that it cannot handle reentrancy. This fix repairs a couple of
1679 issues seen in the field, especially on machines with many cores:
1681 1) Delete method children only upon the exit of the last thread,
1682 so as to not delete objects out from under other running threads
1683 (and possibly causing a fault.)
1684 2) Set the "serialized" bit for the method only upon the exit of the
1685 Last thread, so as to not cause deadlock when running threads
1687 3) Cleanup the use of the AML "MethodFlags" and internal method flags
1688 so that there is no longer any confusion between the two.
1690 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com.
1692 Debugger: Now lock the namespace for duration of a namespace dump.
1694 issues if the namespace is changing dynamically underneath the debugger.
1695 Especially affects temporary namespace nodes, since the debugger displays
1698 Updated the ordering of include files. The ACPICA headers should appear
1699 before any compiler-specific headers (stdio.h, etc.) so that acenv.h can
1701 any necessary compiler-specific defines, etc. Affects the ACPI-related
1705 Updated all ACPICA copyrights and signons to 2011. Added the 2011
1707 to all module headers and signons, including the Linux header. This
1709 virtually every file in the ACPICA core subsystem, iASL compiler, and all
1712 Added project files for MS Visual Studio 2008 (VC++ 9.0). The original
1713 project files for VC++ 6.0 are now obsolete. New project files can be
1715 under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for
1718 Example Code and Data Size: These are the sizes for the OS-independent
1719 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1720 debug version of the code includes the debug output trace mechanism and
1722 much larger code and data size.
1724 Previous Release (VC 6.0):
1725 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
1726 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
1727 Current Release (VC 9.0):
1728 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
1729 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
1731 2) iASL Compiler/Disassembler and Tools:
1733 iASL: Added generic data types to the Data Table compiler. Add "generic"
1735 types such as UINT32, String, Unicode, etc., to simplify the generation of
1736 platform-defined tables such as UEFI. Lin Ming.
1738 iASL: Added listing support for the Data Table Compiler. Adds listing
1740 (-l) to display actual binary output for each line of input code.
1742 ----------------------------------------
1743 09 December 2010. Summary of changes for version 20101209:
1745 1) ACPI CA Core Subsystem:
1747 Completed the major overhaul of the GPE support code that was begun in
1749 2010. Major features include: removal of _PRW execution in ACPICA (host
1750 executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing,
1751 changes to existing interfaces, simplification of GPE handler operation,
1753 a handful of new interfaces:
1759 One new file, evxfgpe.c to consolidate all external GPE interfaces.
1761 See the ACPICA Programmer Reference for full details and programming
1762 information. See the new section 4.4 "General Purpose Event (GPE) Support"
1763 for a full overview, and section 8.7 "ACPI General Purpose Event
1765 for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin Ming,
1766 Bob Moore, Rafael Wysocki.
1768 Implemented a new GPE feature for Windows compatibility, the "Implicit
1770 GPE Notify". This feature will automatically issue a Notify(2) on a device
1771 when a Wake GPE is received if there is no corresponding GPE method or
1772 handler. ACPICA BZ 870.
1774 Fixed a problem with the Scope() operator during table parse and load
1776 During load phase (table load or method execution), the scope operator
1778 not enter the target into the namespace. Instead, it should open a new
1780 at the target location. Linux BZ 19462, ACPICA BZ 882.
1782 Example Code and Data Size: These are the sizes for the OS-independent
1783 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1784 debug version of the code includes the debug output trace mechanism and
1786 much larger code and data size.
1789 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
1790 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
1792 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
1793 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
1795 2) iASL Compiler/Disassembler and Tools:
1797 iASL: Relax the alphanumeric restriction on _CID strings. These strings
1799 "bus-specific" per the ACPI specification, and therefore any characters
1801 acceptable. The only checks that can be performed are for a null string
1803 perhaps for a leading asterisk. ACPICA BZ 886.
1805 iASL: Fixed a problem where a syntax error that caused a premature EOF
1806 condition on the source file emitted a very confusing error message. The
1807 premature EOF is now detected correctly. ACPICA BZ 891.
1809 Disassembler: Decode the AccessSize within a Generic Address Structure
1811 access, word access, etc.) Note, this field does not allow arbitrary bit
1812 access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword.
1814 New: AcpiNames utility - Example namespace dump utility. Shows an example
1816 ACPICA configuration for a minimal namespace dump utility. Uses table and
1817 namespace managers, but no AML interpreter. Does not add any functionality
1818 over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to
1819 partition and configure ACPICA. ACPICA BZ 883.
1821 AML Debugger: Increased the debugger buffer size for method return
1823 Was 4K, increased to 16K. Also enhanced error messages for debugger method
1824 execution, including the buffer overflow case.
1826 ----------------------------------------
1827 13 October 2010. Summary of changes for version 20101013:
1829 1) ACPI CA Core Subsystem:
1831 Added support to clear the PCIEXP_WAKE event. When clearing ACPI events,
1833 clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via
1834 HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880.
1836 Changed the type of the predefined namespace object _TZ from ThermalZone
1838 Device. This was found to be confusing to the host software that processes
1839 the various thermal zones, since _TZ is not really a ThermalZone. However,
1841 Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui
1844 Added Windows Vista SP2 to the list of supported _OSI strings. The actual
1845 string is "Windows 2006 SP2".
1847 Eliminated duplicate code in AcpiUtExecute* functions. Now that the
1849 code automatically repairs _HID-related strings, this type of code is no
1850 longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ 878.
1852 Example Code and Data Size: These are the sizes for the OS-independent
1853 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1854 debug version of the code includes the debug output trace mechanism and
1856 much larger code and data size.
1859 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
1860 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
1862 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
1863 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
1865 2) iASL Compiler/Disassembler and Tools:
1867 iASL: Implemented additional compile-time validation for _HID strings. The
1868 non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the length
1870 the string must be exactly seven or eight characters. For both _HID and
1872 strings, all characters must be alphanumeric. ACPICA BZ 874.
1874 iASL: Allow certain "null" resource descriptors. Some BIOS code creates
1875 descriptors that are mostly or all zeros, with the expectation that they
1877 be filled in at runtime. iASL now allows this as long as there is a
1879 tag" (name) associated with the descriptor, which gives the ASL a handle
1880 needed to modify the descriptor. ACPICA BZ 873.
1882 Added single-thread support to the generic Unix application OSL. Primarily
1883 for iASL support, this change removes the use of semaphores in the single-
1884 threaded ACPICA tools/applications - increasing performance. The
1885 _MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED
1886 option. ACPICA BZ 879.
1888 AcpiExec: several fixes for the 64-bit version. Adds XSDT support and
1890 for 64-bit DSDT/FACS addresses in the FADT. Lin Ming.
1892 iASL: Moved all compiler messages to a new file, aslmessages.h.
1894 ----------------------------------------
1895 15 September 2010. Summary of changes for version 20100915:
1897 1) ACPI CA Core Subsystem:
1899 Removed the AcpiOsDerivePciId OSL interface. The various host
1901 of this function were not OS-dependent and are now obsolete and can be
1902 removed from all host OSLs. This function has been replaced by
1903 AcpiHwDerivePciId, which is now part of the ACPICA core code.
1904 AcpiHwDerivePciId has been implemented without recursion. Adds one new
1905 module, hwpci.c. ACPICA BZ 857.
1907 Implemented a dynamic repair for _HID and _CID strings. The following
1908 problems are now repaired at runtime: 1) Remove a leading asterisk in the
1909 string, and 2) the entire string is uppercased. Both repairs are in
1910 accordance with the ACPI specification and will simplify host driver code.
1913 The ACPI_THREAD_ID type is no longer configurable, internally it is now
1914 always UINT64. This simplifies the ACPICA code, especially any printf
1916 UINT64 is the only common data type for all thread_id types across all
1917 operating systems. It is now up to the host OSL to cast the native
1919 type to UINT64 before returning the value to ACPICA (via
1921 Lin Ming, Bob Moore.
1923 Added the ACPI_INLINE type to enhance the ACPICA configuration. The
1925 keyword is not standard across compilers, and this type allows inline to
1927 configured on a per-compiler basis. Lin Ming.
1929 Made the system global AcpiGbl_SystemAwakeAndRunning publically available.
1930 Added an extern for this boolean in acpixf.h. Some hosts utilize this
1932 during suspend/restore operations. ACPICA BZ 869.
1934 All code that implements error/warning messages with the "ACPI:" prefix
1936 been moved to a new module, utxferror.c.
1938 The UINT64_OVERLAY was moved to utmath.c, which is the only module where
1940 is used. ACPICA BZ 829. Lin Ming, Bob Moore.
1942 Example Code and Data Size: These are the sizes for the OS-independent
1943 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1944 debug version of the code includes the debug output trace mechanism and
1946 much larger code and data size.
1949 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
1950 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
1952 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
1953 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
1955 2) iASL Compiler/Disassembler and Tools:
1957 iASL/Disassembler: Write ACPI errors to stderr instead of the output file.
1958 This keeps the output files free of random error messages that may
1960 from within the namespace/interpreter code. Used this opportunity to merge
1961 all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ
1962 866. Lin Ming, Bob Moore.
1964 Tools: update some printfs for ansi warnings on size_t. Handle width
1966 of size_t on 32-bit versus 64-bit generations. Lin Ming.
1968 ----------------------------------------
1969 06 August 2010. Summary of changes for version 20100806:
1971 1) ACPI CA Core Subsystem:
1973 Designed and implemented a new host interface to the _OSI support code.
1975 will allow the host to dynamically add or remove multiple _OSI strings, as
1976 well as install an optional handler that is called for each _OSI
1978 Also added a new AML debugger command, 'osi' to display and modify the
1980 _OSI string table, and test support in the AcpiExec utility. See the
1982 reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836.
1984 AcpiInstallInterface - Add an _OSI string.
1985 AcpiRemoveInterface - Delete an _OSI string.
1986 AcpiInstallInterfaceHandler - Install optional _OSI handler.
1988 AcpiOsValidateInterface - no longer used.
1990 source/components/utilities/utosi.c
1992 Re-introduced the support to enable multi-byte transfers for Embedded
1993 Controller (EC) operation regions. A reported problem was found to be a
1995 in the host OS, not in the multi-byte support. Previously, the maximum
1997 size passed to the EC operation region handler was a single byte. There
1999 often EC Fields larger than one byte that need to be transferred, and it
2001 useful for the EC driver to lock these as a single transaction. This
2003 enables single transfers larger than 8 bits. This effectively changes the
2004 access to the EC space from ByteAcc to AnyAcc, and will probably require
2005 changes to the host OS Embedded Controller driver to enable 16/32/64/256-
2007 transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming.
2009 Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The
2010 prototype in acpiosxf.h had the output value pointer as a (void *).
2011 It should be a (UINT64 *). This may affect some host OSL code.
2013 Fixed a couple problems with the recently modified Linux makefiles for
2015 and AcpiExec. These new makefiles place the generated object files in the
2016 local directory so that there can be no collisions between the files that
2018 shared between them that are compiled with different options.
2020 Example Code and Data Size: These are the sizes for the OS-independent
2021 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2022 debug version of the code includes the debug output trace mechanism and
2024 much larger code and data size.
2027 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
2028 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
2030 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
2031 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
2033 2) iASL Compiler/Disassembler and Tools:
2035 iASL/Disassembler: Added a new option (-da, "disassemble all") to load the
2036 namespace from and disassemble an entire group of AML files. Useful for
2037 loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn)
2039 disassembling with one simple command. ACPICA BZ 865. Lin Ming.
2041 iASL: Allow multiple invocations of -e option. This change allows multiple
2042 uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ
2046 ----------------------------------------
2047 02 July 2010. Summary of changes for version 20100702:
2049 1) ACPI CA Core Subsystem:
2051 Implemented several updates to the recently added GPE reference count
2052 support. The model for "wake" GPEs is changing to give the host OS
2054 control of these GPEs. Eventually, the ACPICA core will not execute any
2056 methods, since the host already must execute them. Also, additional
2058 were made to help ensure that the reference counts are kept in proper
2059 synchronization with reality. Rafael J. Wysocki.
2061 1) Ensure that GPEs are not enabled twice during initialization.
2062 2) Ensure that GPE enable masks stay in sync with the reference count.
2063 3) Do not inadvertently enable GPEs when writing GPE registers.
2064 4) Remove the internal wake reference counter and add new AcpiGpeWakeup
2065 interface. This interface will set or clear individual GPEs for wakeup.
2066 5) Remove GpeType argument from AcpiEnable and AcpiDisable. These
2068 are now used for "runtime" GPEs only.
2070 Changed the behavior of the GPE install/remove handler interfaces. The GPE
2072 no longer disabled during this process, as it was found to cause problems
2074 some machines. Rafael J. Wysocki.
2076 Reverted a change introduced in version 20100528 to enable Embedded
2077 Controller multi-byte transfers. This change was found to cause problems
2079 Index Fields and possibly Bank Fields. It will be reintroduced when these
2080 problems have been resolved.
2082 Fixed a problem with references to Alias objects within Package Objects. A
2083 reference to an Alias within the definition of a Package was not always
2084 resolved properly. Aliases to objects like Processors, Thermal zones, etc.
2085 were resolved to the actual object instead of a reference to the object as
2087 should be. Package objects are only allowed to contain integer, string,
2088 buffer, package, and reference objects. Redhat bugzilla 608648.
2090 Example Code and Data Size: These are the sizes for the OS-independent
2091 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2092 debug version of the code includes the debug output trace mechanism and
2094 much larger code and data size.
2097 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
2098 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
2100 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
2101 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
2103 2) iASL Compiler/Disassembler and Tools:
2105 iASL: Implemented a new compiler subsystem to allow definition and
2106 compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc.
2108 are called "ACPI Data Tables", and the new compiler is the "Data Table
2109 Compiler". This compiler is intended to simplify the existing error-prone
2110 process of creating these tables for the BIOS, as well as allowing the
2111 disassembly, modification, recompilation, and override of existing ACPI
2113 tables. See the iASL User Guide for detailed information.
2115 iASL: Implemented a new Template Generator option in support of the new
2117 Table Compiler. This option will create examples of all known ACPI tables
2118 that can be used as the basis for table development. See the iASL
2119 documentation and the -T option.
2121 Disassembler and headers: Added support for the WDDT ACPI table (Watchdog
2124 Updated the Linux makefiles for iASL and AcpiExec to place the generated
2125 object files in the local directory so that there can be no collisions
2126 between the shared files between them that are generated with different
2129 Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec. Use
2130 the #define __APPLE__ to enable this support.
2132 ----------------------------------------
2133 28 May 2010. Summary of changes for version 20100528:
2135 Note: The ACPI 4.0a specification was released on April 5, 2010 and is
2136 available at www.acpi.info. This is primarily an errata release.
2138 1) ACPI CA Core Subsystem:
2140 Undefined ACPI tables: We are looking for the definitions for the
2142 ACPI tables that have been seen in the field: ATKG, IEIT, GSCI.
2144 Implemented support to enable multi-byte transfers for Embedded Controller
2145 (EC) operation regions. Previously, the maximum data size passed to the EC
2146 operation region handler was a single byte. There are often EC Fields
2148 than one byte that need to be transferred, and it is useful for the EC
2150 to lock these as a single transaction. This change enables single
2152 larger than 8 bits. This effectively changes the access to the EC space
2154 ByteAcc to AnyAcc, and will probably require changes to the host OS
2156 Controller driver to enable 16/32/64/256-bit transfers in addition to 8-
2158 transfers. Alexey Starikovskiy, Lin Ming
2160 Implemented a performance enhancement for namespace search and access.
2162 change enhances the performance of namespace searches and walks by adding
2164 backpointer to the parent in each namespace node. On large namespaces,
2166 change can improve overall ACPI performance by up to 9X. Adding a pointer
2168 each namespace node increases the overall size of the internal namespace
2170 about 5%, since each namespace entry usually consists of both a namespace
2171 node and an ACPI operand object. However, this is the first growth of the
2172 namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy.
2174 Implemented a performance optimization that reduces the number of
2176 walks. On control method exit, only walk the namespace if the method is
2178 to have created namespace objects outside of its local scope. Previously,
2180 entire namespace was traversed on each control method exit. This change
2182 improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob
2185 Added support to truncate I/O addresses to 16 bits for Windows
2187 Some ASL code has been seen in the field that inadvertently has bits set
2188 above bit 15. This feature is optional and is enabled if the BIOS requests
2189 any Windows OSI strings. It can also be enabled by the host OS. Matthew
2192 Added support to limit the maximum time for the ASL Sleep() operator. To
2193 prevent accidental deep sleeps, limit the maximum time that Sleep() will
2194 actually sleep. Configurable, the default maximum is two seconds. ACPICA
2197 Added run-time validation support for the _WDG and_WED Microsoft
2199 methods. These objects are defined by "Windows Instrumentation", and are
2201 part of the ACPI spec. ACPICA BZ 860.
2203 Expanded all statistic counters used during namespace and device
2204 initialization from 16 to 32 bits in order to support very large
2207 Replaced all instances of %d in printf format specifiers with %u since
2209 all integers in ACPICA are unsigned.
2211 Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly
2215 Example Code and Data Size: These are the sizes for the OS-independent
2216 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2217 debug version of the code includes the debug output trace mechanism and
2219 much larger code and data size.
2222 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
2223 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
2225 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
2226 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
2228 2) iASL Compiler/Disassembler and Tools:
2230 iASL: Added compiler support for the _WDG and_WED Microsoft predefined
2231 methods. These objects are defined by "Windows Instrumentation", and are
2233 part of the ACPI spec. ACPICA BZ 860.
2235 AcpiExec: added option to disable the memory tracking mechanism. The -dt
2236 option will disable the tracking mechanism, which improves performance
2239 AcpiExec: Restructured the command line options into -d (disable) and -e
2242 ----------------------------------------
2243 28 April 2010. Summary of changes for version 20100428:
2245 1) ACPI CA Core Subsystem:
2247 Implemented GPE support for dynamically loaded ACPI tables. For all GPEs,
2248 including FADT-based and GPE Block Devices, execute any _PRW methods in
2250 new table, and process any _Lxx/_Exx GPE methods in the new table. Any
2251 runtime GPE that is referenced by an _Lxx/_Exx method in the new table is
2252 immediately enabled. Handles the FADT-defined GPEs as well as GPE Block
2253 Devices. Provides compatibility with other ACPI implementations. Two new
2254 files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob
2257 Fixed a regression introduced in version 20100331 within the table manager
2258 where initial table loading could fail. This was introduced in the fix for
2259 AcpiReallocateRootTable. Also, renamed some of fields in the table manager
2260 data structures to clarify their meaning and use.
2262 Fixed a possible allocation overrun during internal object copy in
2263 AcpiUtCopySimpleObject. The original code did not correctly handle the
2265 where the object to be copied was a namespace node. Lin Ming. ACPICA BZ
2268 Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a
2269 possible access beyond end-of-allocation. Also, now fully validate
2271 (size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847
2273 Example Code and Data Size: These are the sizes for the OS-independent
2274 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2275 debug version of the code includes the debug output trace mechanism and
2277 much larger code and data size.
2280 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
2281 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
2283 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
2284 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
2286 2) iASL Compiler/Disassembler and Tools:
2288 iASL: Implemented Min/Max/Len/Gran validation for address resource
2289 descriptors. This change implements validation for the address fields that
2290 are common to all address-type resource descriptors. These checks are
2291 implemented: Checks for valid Min/Max, length within the Min/Max window,
2292 valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as per
2293 table 6-40 in the ACPI 4.0a specification. Also split the large
2295 and aslrestype2.c files into five new files. ACPICA BZ 840.
2297 iASL: Added support for the _Wxx predefined names. This support was
2299 and these names were not recognized by the compiler as valid predefined
2300 names. ACPICA BZ 851.
2302 iASL: Added an error for all predefined names that are defined to return
2304 value and thus must be implemented as Control Methods. These include all
2306 the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous
2307 names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856.
2309 iASL: Implemented the -ts option to emit hex AML data in ASL format, as an
2310 ASL Buffer. Allows ACPI tables to be easily included within ASL files, to
2312 dynamically loaded via the Load() operator. Also cleaned up output for the
2314 ta and -tc options. ACPICA BZ 853.
2316 Tests: Added a new file with examples of extended iASL error checking.
2317 Demonstrates the advanced error checking ability of the iASL compiler.
2318 Available at tests/misc/badcode.asl.
2320 ----------------------------------------
2321 31 March 2010. Summary of changes for version 20100331:
2323 1) ACPI CA Core Subsystem:
2325 Completed a major update for the GPE support in order to improve support
2327 shared GPEs and to simplify both host OS and ACPICA code. Added a
2329 count mechanism to support shared GPEs that require multiple device
2331 Several external interfaces have changed. One external interface has been
2332 removed. One new external interface was added. Most of the GPE external
2333 interfaces now use the GPE spinlock instead of the events mutex (and the
2334 Flags parameter for many GPE interfaces has been removed.) See the updated
2335 ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore,
2337 Wysocki. ACPICA BZ 831.
2340 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus
2346 Implemented write support for DataTable operation regions. These regions
2348 defined via the DataTableRegion() operator. Previously, only read support
2350 implemented. The ACPI specification allows DataTableRegions to be
2354 Implemented a new subsystem option to force a copy of the DSDT to local
2355 memory. Optionally copy the entire DSDT to local memory (instead of simply
2356 mapping it.) There are some (albeit very rare) BIOSs that corrupt or
2358 the original DSDT, creating the need for this option. Default is FALSE, do
2361 Implemented detection of a corrupted or replaced DSDT. This change adds
2362 support to detect a DSDT that has been corrupted and/or replaced from
2364 the OS (by firmware). This is typically catastrophic for the system, but
2366 been seen on some machines. Once this problem has been detected, the DSDT
2367 copy option can be enabled via system configuration. Lin Ming, Bob Moore.
2369 Fixed two problems with AcpiReallocateRootTable during the root table
2371 When copying the root table to the new allocation, the length used was
2372 incorrect. The new size was used instead of the current table size,
2374 too much data was copied. Also, the count of available slots for ACPI
2376 was not set correctly. Alexey Starikovskiy, Bob Moore.
2378 Example Code and Data Size: These are the sizes for the OS-independent
2379 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2380 debug version of the code includes the debug output trace mechanism and
2382 much larger code and data size.
2385 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
2386 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
2388 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
2389 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
2391 2) iASL Compiler/Disassembler and Tools:
2393 iASL: Implement limited typechecking for values returned from predefined
2394 control methods. The type of any returned static (unnamed) object is now
2395 validated. For example, Return(1). ACPICA BZ 786.
2397 iASL: Fixed a predefined name object verification regression. Fixes a
2399 introduced in version 20100304. An error is incorrectly generated if a
2400 predefined name is declared as a static named object with a value defined
2401 using the keywords "Zero", "One", or "Ones". Lin Ming.
2403 iASL: Added Windows 7 support for the -g option (get local ACPI tables) by
2404 reducing the requested registry access rights. ACPICA BZ 842.
2406 Disassembler: fixed a possible fault when generating External()
2408 Introduced in commit ae7d6fd: Properly handle externals with parent-prefix
2409 (carat). Fixes a string length allocation calculation. Lin Ming.
2411 ----------------------------------------
2412 04 March 2010. Summary of changes for version 20100304:
2414 1) ACPI CA Core Subsystem:
2416 Fixed a possible problem with the AML Mutex handling function
2417 AcpiExReleaseMutex where the function could fault under the very rare
2418 condition when the interpreter has blocked, the interpreter lock is
2420 the interpreter is then reentered via the same thread, and attempts to
2421 acquire an AML mutex that was previously acquired. FreeBSD report 140979.
2425 Implemented additional configuration support for the AML "Debug Object".
2426 Output from the debug object can now be enabled via a global variable,
2427 AcpiGbl_EnableAmlDebugObject. This will assist with remote machine
2429 This debug output is now available in the release version of ACPICA
2431 of just the debug version. Also, the entire debug output module can now be
2432 configured out of the ACPICA build if desired. One new file added,
2433 executer/exdebug.c. Lin Ming, Bob Moore.
2435 Added header support for the ACPI MCHI table (Management Controller Host
2436 Interface Table). This table was added in ACPI 4.0, but the defining
2438 has only recently become available.
2440 Standardized output of integer values for ACPICA warnings/errors. Always
2442 0x prefix for hex output, always use %u for unsigned integer decimal
2444 Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about 400
2445 invocations.) These invocations were converted from the original
2446 ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835.
2448 Example Code and Data Size: These are the sizes for the OS-independent
2449 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2450 debug version of the code includes the debug output trace mechanism and
2452 much larger code and data size.
2455 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
2456 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
2458 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
2459 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
2461 2) iASL Compiler/Disassembler and Tools:
2463 iASL: Implemented typechecking support for static (non-control method)
2464 predefined named objects that are declared with the Name() operator. For
2465 example, the type of this object is now validated to be of type Integer:
2466 Name(_BBN, 1). This change migrates the compiler to using the core
2468 name table instead of maintaining a local version. Added a new file,
2469 aslpredef.c. ACPICA BZ 832.
2471 Disassembler: Added support for the ACPI 4.0 MCHI table.
2473 ----------------------------------------
2474 21 January 2010. Summary of changes for version 20100121:
2476 1) ACPI CA Core Subsystem:
2478 Added the 2010 copyright to all module headers and signons. This affects
2479 virtually every file in the ACPICA core subsystem, the iASL compiler, the
2480 tools/utilities, and the test suites.
2482 Implemented a change to the AcpiGetDevices interface to eliminate
2484 invocations of the _STA method. In the case where a specific _HID is
2485 requested, do not run _STA until a _HID match is found. This eliminates
2486 potentially dozens of _STA calls during a search for a particular
2488 which in turn can improve boot times. ACPICA BZ 828. Lin Ming.
2490 Implemented an additional repair for predefined method return values.
2492 to repair unexpected NULL elements within returned Package objects. Create
2494 Integer of value zero, a NULL String, or a zero-length Buffer as
2496 ACPICA BZ 818. Lin Ming, Bob Moore.
2498 Removed the obsolete ACPI_INTEGER data type. This type was introduced as
2500 code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0
2502 64-bit AML integers). It is now obsolete and this change removes it from
2504 ACPICA code base, replaced by UINT64. The original typedef has been
2506 for now for compatibility with existing device driver code. ACPICA BZ 824.
2508 Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field in
2509 the parse tree object.
2511 Added additional warning options for the gcc-4 generation. Updated the
2513 accordingly. This includes some code restructuring to eliminate
2515 code, elimination of some gotos, elimination of unused return values, some
2516 additional casting, and removal of redundant declarations.
2518 Example Code and Data Size: These are the sizes for the OS-independent
2519 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2520 debug version of the code includes the debug output trace mechanism and
2522 much larger code and data size.
2525 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
2526 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
2528 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
2529 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
2531 2) iASL Compiler/Disassembler and Tools:
2533 No functional changes for this release.
2535 ----------------------------------------
2536 14 December 2009. Summary of changes for version 20091214:
2538 1) ACPI CA Core Subsystem:
2540 Enhanced automatic data type conversions for predefined name repairs. This
2541 change expands the automatic repairs/conversions for predefined name
2543 values to make Integers, Strings, and Buffers fully interchangeable. Also,
2545 Buffer can be converted to a Package of Integers if necessary. The
2547 module was completely restructured. Lin Ming, Bob Moore.
2549 Implemented automatic removal of null package elements during predefined
2551 repairs. This change will automatically remove embedded and trailing NULL
2552 package elements from returned package objects that are defined to contain
2554 variable number of sub-packages. The driver is then presented with a
2556 with no null elements to deal with. ACPICA BZ 819.
2558 Implemented a repair for the predefined _FDE and _GTM names. The expected
2559 return value for both names is a Buffer of 5 DWORDs. This repair fixes two
2560 possible problems (both seen in the field), where a package of integers is
2561 returned, or a buffer of BYTEs is returned. With assistance from Jung-uk
2564 Implemented additional module-level code support. This change will
2566 execute module-level code that is not at the root of the namespace (under
2568 Device object, etc.). Now executes the code within the current scope
2570 of the root. ACPICA BZ 762. Lin Ming.
2572 Fixed possible mutex acquisition errors when running _REG methods. Fixes a
2573 problem where mutex errors can occur when running a _REG method that is in
2574 the same scope as a method-defined operation region or an operation region
2575 under a module-level IF block. This type of code is rare, so the problem
2577 not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore.
2579 Fixed a possible memory leak during module-level code execution. An object
2580 could be leaked for each block of executed module-level code if the
2581 interpreter slack mode is enabled This change deletes any implicitly
2583 object from the module-level code block. Lin Ming.
2585 Removed messages for successful predefined repair(s). The repair mechanism
2586 was considered too wordy. Now, messages are only unconditionally emitted
2588 the return object cannot be repaired. Existing messages for successful
2589 repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ
2592 Example Code and Data Size: These are the sizes for the OS-independent
2593 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2594 debug version of the code includes the debug output trace mechanism and
2596 much larger code and data size.
2599 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
2600 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
2602 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
2603 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
2605 2) iASL Compiler/Disassembler and Tools:
2607 iASL: Fixed a regression introduced in 20091112 where intermediate .SRC
2609 were no longer automatically removed at the termination of the compile.
2611 acpiexec: Implemented the -f option to specify default region fill value.
2612 This option specifies the value used to initialize buffers that simulate
2613 operation regions. Default value is zero. Useful for debugging problems
2615 depend on a specific initial value for a region or field.
2617 ----------------------------------------
2618 12 November 2009. Summary of changes for version 20091112:
2620 1) ACPI CA Core Subsystem:
2622 Implemented a post-order callback to AcpiWalkNamespace. The existing
2623 interface only has a pre-order callback. This change adds an additional
2624 parameter for a post-order callback which will be more useful for bus
2626 ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference.
2628 Modified the behavior of the operation region memory mapping cache for
2629 SystemMemory. Ensure that the memory mappings created for operation
2631 do not cross 4K page boundaries. Crossing a page boundary while mapping
2632 regions can cause kernel warnings on some hosts if the pages have
2634 attributes. Such regions are probably BIOS bugs, and this is the
2636 Linux BZ 14445. Lin Ming.
2638 Implemented an automatic repair for predefined methods that must return
2639 sorted lists. This change will repair (by sorting) packages returned by
2641 _PSS, and _TSS. Drivers can now assume that the packages are correctly
2643 and do not contain NULL package elements. Adds one new file,
2644 namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore.
2646 Fixed a possible fault during predefined name validation if a return
2648 object contains NULL elements. Also adds a warning if a NULL element is
2649 followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement
2651 include repair or removal of all such NULL elements where possible.
2653 Implemented additional module-level executable AML code support. This
2655 will execute module-level code that is not at the root of the namespace
2656 (under a Device object, etc.) at table load time. Module-level executable
2658 code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming.
2660 Implemented a new internal function to create Integer objects. This
2662 simplifies miscellaneous object creation code. ACPICA BZ 823.
2664 Reduced the severity of predefined repair messages, Warning to Info. Since
2665 the object was successfully repaired, a warning is too severe. Reduced to
2667 info message for now. These messages may eventually be changed to debug-
2671 Example Code and Data Size: These are the sizes for the OS-independent
2672 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2673 debug version of the code includes the debug output trace mechanism and
2675 much larger code and data size.
2678 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
2679 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
2681 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
2682 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
2684 2) iASL Compiler/Disassembler and Tools:
2686 iASL: Implemented Switch() with While(1) so that Break works correctly.
2688 change correctly implements the Switch operator with a surrounding
2690 so that the Break operator works as expected. ACPICA BZ 461. Lin Ming.
2692 iASL: Added a message if a package initializer list is shorter than
2694 length. Adds a new remark for a Package() declaration if an initializer
2696 exists, but is shorter than the declared length of the package. Although
2697 technically legal, this is probably a coding error and it is seen in the
2698 field. ACPICA BZ 815. Lin Ming, Bob Moore.
2700 iASL: Fixed a problem where the compiler could fault after the maximum
2702 of errors was reached (200).
2704 acpixtract: Fixed a possible warning for pointer cast if the compiler
2706 level set very high.
2708 ----------------------------------------
2709 13 October 2009. Summary of changes for version 20091013:
2711 1) ACPI CA Core Subsystem:
2713 Fixed a problem where an Operation Region _REG method could be executed
2715 than once. If a custom address space handler is installed by the host
2717 the "initialize operation regions" phase of the ACPICA initialization, any
2718 _REG methods for that address space could be executed twice. This change
2719 fixes the problem. ACPICA BZ 427. Lin Ming.
2721 Fixed a possible memory leak for the Scope() ASL operator. When the exact
2722 invocation of "Scope(\)" is executed (change scope to root), one internal
2723 operand object was leaked. Lin Ming.
2725 Implemented a run-time repair for the _MAT predefined method. If the _MAT
2726 return value is defined as a Field object in the AML, and the field
2727 size is less than or equal to the default width of an integer (32 or
2729 can incorrectly return an Integer instead of a Buffer. ACPICA now
2730 automatically repairs this problem. ACPICA BZ 810.
2732 Implemented a run-time repair for the _BIF and _BIX predefined methods.
2734 "OEM Information" field is often incorrectly returned as an Integer with
2735 value zero if the field is not supported by the platform. This is due to
2737 ambiguity in the ACPI specification. The field should always be a string.
2738 ACPICA now automatically repairs this problem by returning a NULL string
2739 within the returned Package. ACPICA BZ 807.
2741 Example Code and Data Size: These are the sizes for the OS-independent
2742 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2743 debug version of the code includes the debug output trace mechanism and
2745 much larger code and data size.
2748 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
2749 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
2751 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
2752 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
2754 2) iASL Compiler/Disassembler and Tools:
2756 Disassembler: Fixed a problem where references to external symbols that
2757 contained one or more parent-prefixes (carats) were not handled correctly,
2758 possibly causing a fault. ACPICA BZ 806. Lin Ming.
2760 Disassembler: Restructured the code so that all functions that handle
2761 external symbols are in a single module. One new file is added,
2764 AML Debugger: Added a max count argument for the Batch command (which
2765 executes multiple predefined methods within the namespace.)
2767 iASL: Updated the compiler documentation (User Reference.) Available at
2768 http://www.acpica.org/documentation/. ACPICA BZ 750.
2770 AcpiXtract: Updated for Lint and other formatting changes. Close all open
2773 ----------------------------------------
2774 03 September 2009. Summary of changes for version 20090903:
2776 1) ACPI CA Core Subsystem:
2778 For Windows Vista compatibility, added the automatic execution of an _INI
2779 method located at the namespace root (\_INI). This method is executed at
2780 table load time. This support is in addition to the automatic execution of
2781 \_SB._INI. Lin Ming.
2783 Fixed a possible memory leak in the interpreter for AML package objects if
2784 the package initializer list is longer than the defined size of the
2786 This apparently can only happen if the BIOS changes the package size on
2788 fly (seen in a _PSS object), as ASL compilers do not allow this. The
2789 interpreter will truncate the package to the defined size (and issue an
2791 message), but previously could leave the extra objects undeleted if they
2793 pre-created during the argument processing (such is the case if the
2795 consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805.
2797 Fixed a problem seen when a Buffer or String is stored to itself via ASL.
2798 This has been reported in the field. Previously, ACPICA would zero out the
2799 buffer/string. Now, the operation is treated as a noop. Provides Windows
2800 compatibility. ACPICA BZ 803. Lin Ming.
2802 Removed an extraneous error message for ASL constructs of the form
2803 Store(LocalX,LocalX) when LocalX is uninitialized. These curious
2805 are seen in many BIOSs and are once again treated as NOOPs and no error is
2806 emitted when they are encountered. ACPICA BZ 785.
2808 Fixed an extraneous warning message if a _DSM reserved method returns a
2809 Package object. _DSM can return any type of object, so validation on the
2810 return type cannot be performed. ACPICA BZ 802.
2812 Example Code and Data Size: These are the sizes for the OS-independent
2813 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2814 debug version of the code includes the debug output trace mechanism and
2816 much larger code and data size.
2819 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
2820 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
2822 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
2823 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
2825 2) iASL Compiler/Disassembler and Tools:
2827 iASL: Fixed a problem with the use of the Alias operator and Resource
2828 Templates. The correct alias is now constructed and no error is emitted.
2831 iASL: Implemented the -I option to specify additional search directories
2833 include files. Allows multiple additional search paths for include files.
2834 Directories are searched in the order specified on the command line (after
2835 the local directory is searched.) ACPICA BZ 800.
2837 iASL: Fixed a problem where the full pathname for include files was not
2838 emitted for warnings/errors. This caused the IDE support to not work
2839 properly. ACPICA BZ 765.
2841 iASL: Implemented the -@ option to specify a Windows-style response file
2842 containing additional command line options. ACPICA BZ 801.
2844 AcpiExec: Added support to load multiple AML files simultaneously (such as
2846 DSDT and multiple SSDTs). Also added support for wildcards within the AML
2847 pathname. These features allow all machine tables to be easily loaded and
2848 debugged together. ACPICA BZ 804.
2850 Disassembler: Added missing support for disassembly of HEST table Error
2854 ----------------------------------------
2855 30 July 2009. Summary of changes for version 20090730:
2857 The ACPI 4.0 implementation for ACPICA is complete with this release.
2859 1) ACPI CA Core Subsystem:
2861 ACPI 4.0: Added header file support for all new and changed ACPI tables.
2862 Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are new
2863 for ACPI 4.0, but have previously been supported in ACPICA are: CPEP,
2865 EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT.
2867 have been some ACPI 4.0 changes to other existing tables. Split the large
2868 actbl1.h header into the existing actbl2.h header. ACPICA BZ 774.
2870 ACPI 4.0: Implemented predefined name validation for all new names. There
2872 31 new names in ACPI 4.0. The predefined validation module was split into
2874 files. The new file is namespace/nsrepair.c. ACPICA BZ 770.
2876 Implemented support for so-called "module-level executable code". This is
2877 executable AML code that exists outside of any control method and is
2879 to be executed at table load time. Although illegal since ACPI 2.0, this
2881 of code still exists and is apparently still being created. Blocks of this
2882 code are now detected and executed as intended. Currently, the code blocks
2883 must exist under either an If, Else, or While construct; these are the
2884 typical cases seen in the field. ACPICA BZ 762. Lin Ming.
2886 Implemented an automatic dynamic repair for predefined names that return
2887 nested Package objects. This applies to predefined names that are defined
2889 return a variable-length Package of sub-packages. If the number of sub-
2890 packages is one, BIOS code is occasionally seen that creates a simple
2892 package with no sub-packages. This code attempts to fix the problem by
2893 wrapping a new package object around the existing package. These methods
2895 be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA BZ
2898 Fixed a regression introduced in 20090625 for the AcpiGetDevices
2900 The _HID/_CID matching was broken and no longer matched IDs correctly.
2904 Fixed a problem with AcpiReset where the reset would silently fail if the
2905 register was one of the protected I/O ports. AcpiReset now bypasses the
2907 validation mechanism. This may eventually be driven into the
2911 Fixed a regression related to the recent update of the AcpiRead/Write
2912 interfaces. A sleep/suspend could fail if the optional PM2 Control
2914 does not exist during an attempt to write the Bus Master Arbitration bit.
2915 (However, some hosts already delete the code that writes this bit, and the
2916 code may in fact be obsolete at this date.) ACPICA BZ 799.
2918 Fixed a problem where AcpiTerminate could fault if inadvertently called
2920 in succession. ACPICA BZ 795.
2922 Example Code and Data Size: These are the sizes for the OS-independent
2923 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2924 debug version of the code includes the debug output trace mechanism and
2926 much larger code and data size.
2929 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
2930 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
2932 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
2933 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
2935 2) iASL Compiler/Disassembler and Tools:
2937 ACPI 4.0: Implemented disassembler support for all new ACPI tables and
2938 changes to existing tables. ACPICA BZ 775.
2940 ----------------------------------------
2941 25 June 2009. Summary of changes for version 20090625:
2943 The ACPI 4.0 Specification was released on June 16 and is available at
2944 www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will
2945 continue for the next few releases.
2947 1) ACPI CA Core Subsystem:
2949 ACPI 4.0: Implemented interpreter support for the IPMI operation region
2950 address space. Includes support for bi-directional data buffers and an
2952 address space handler (to be installed by an IPMI device driver.) ACPICA
2956 ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. Includes
2957 support in both the header files and the disassembler.
2959 Completed a major update for the AcpiGetObjectInfo external interface.
2961 - Support for variable, unlimited length HID, UID, and CID strings.
2962 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA,
2964 - Call the _SxW power methods on behalf of a device object.
2965 - Determine if a device is a PCI root bridge.
2966 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO.
2967 These changes will require an update to all callers of this interface. See
2968 the updated ACPICA Programmer Reference for details. One new source file
2970 been added - utilities/utids.c. ACPICA BZ 368, 780.
2972 Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit
2973 transfers. The Value parameter has been extended from 32 bits to 64 bits
2975 order to support new ACPI 4.0 tables. These changes will require an update
2977 all callers of these interfaces. See the ACPICA Programmer Reference for
2978 details. ACPICA BZ 768.
2980 Fixed several problems with AcpiAttachData. The handler was not invoked
2982 the host node was deleted. The data sub-object was not automatically
2984 when the host node was deleted. The interface to the handler had an unused
2985 parameter, this was removed. ACPICA BZ 778.
2987 Enhanced the function that dumps ACPI table headers. All non-printable
2988 characters in the string fields are now replaced with '?' (Signature,
2990 OemTableId, and CompilerId.) ACPI tables with non-printable characters in
2991 these fields are occasionally seen in the field. ACPICA BZ 788.
2993 Fixed a problem with predefined method repair code where the code that
2994 attempts to repair/convert an object of incorrect type is only executed on
2995 the first time the predefined method is called. The mechanism that
2997 warnings on subsequent calls was interfering with the repair mechanism.
3000 Fixed a possible memory leak in the predefined validation/repair code when
3002 buffer is automatically converted to an expected string object.
3004 Removed obsolete 16-bit files from the distribution and from the current
3006 tree head. ACPICA BZ 776.
3008 Example Code and Data Size: These are the sizes for the OS-independent
3009 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3010 debug version of the code includes the debug output trace mechanism and
3012 much larger code and data size.
3015 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
3016 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
3018 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
3019 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
3021 2) iASL Compiler/Disassembler and Tools:
3023 ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI
3024 operation region keyword. ACPICA BZ 771, 772. Lin Ming.
3026 ACPI 4.0: iASL - implemented compile-time validation support for all new
3027 predefined names and control methods (31 total). ACPICA BZ 769.
3029 ----------------------------------------
3030 21 May 2009. Summary of changes for version 20090521:
3032 1) ACPI CA Core Subsystem:
3034 Disabled the preservation of the SCI enable bit in the PM1 control
3036 The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification to
3038 a "preserved" bit - "OSPM always preserves this bit position", section
3039 4.7.3.2.1. However, some machines fail if this bit is in fact preserved
3040 because the bit needs to be explicitly set by the OS as a workaround. No
3041 machines fail if the bit is not preserved. Therefore, ACPICA no longer
3042 attempts to preserve this bit.
3044 Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or
3045 incorrectly formed _PRT package could cause a fault. Added validation to
3046 ensure that each package element is actually a sub-package.
3048 Implemented a new interface to install or override a single control
3050 AcpiInstallMethod. This interface is useful when debugging in order to
3052 an existing method or to install a missing method without having to
3054 the entire ACPI table. See the ACPICA Programmer Reference for use and
3055 examples. Lin Ming, Bob Moore.
3057 Fixed several reference count issues with the DdbHandle object that is
3058 created from a Load or LoadTable operator. Prevent premature deletion of
3060 object. Also, mark the object as invalid once the table has been unloaded.
3061 This is needed because the handle itself may not be deleted after the
3063 unload, depending on whether it has been stored in a named object by the
3066 Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple
3067 mutexes of the same sync level are acquired but then not released in
3069 opposite order, the internally maintained Current Sync Level becomes
3071 and can cause subsequent execution errors. ACPICA BZ 471.
3073 Changed the allowable release order for ASL mutex objects. The ACPI 4.0
3074 specification has been changed to make the SyncLevel for mutex objects
3076 useful. When releasing a mutex, the SyncLevel of the mutex must now be the
3077 same as the current sync level. This makes more sense than the previous
3079 (SyncLevel less than or equal). This change updates the code to match the
3082 Fixed a problem with the local version of the AcpiOsPurgeCache function.
3084 (local) cache must be locked during all cache object deletions. Andrew
3087 Updated the Load operator to use operation region interfaces. This
3089 direct memory mapping with region access calls. Now, all region accesses
3091 through the installed region handler as they should.
3093 Simplified and optimized the NsGetNextNode function. Reduced parameter
3095 and reduced code for this frequently used function.
3097 Example Code and Data Size: These are the sizes for the OS-independent
3098 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3099 debug version of the code includes the debug output trace mechanism and
3101 much larger code and data size.
3104 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
3105 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
3107 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
3108 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
3110 2) iASL Compiler/Disassembler and Tools:
3112 Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some
3114 with sub-table disassembly and handling invalid sub-tables. Attempt
3116 after an invalid sub-table ID.
3118 ----------------------------------------
3119 22 April 2009. Summary of changes for version 20090422:
3121 1) ACPI CA Core Subsystem:
3123 Fixed a compatibility issue with the recently released I/O port protection
3124 mechanism. For windows compatibility, 1) On a port protection violation,
3125 simply ignore the request and do not return an exception (allow the
3127 method to continue execution.) 2) If only part of the request overlaps a
3128 protected port, read/write the individual ports that are not protected.
3132 Enhanced the execution of the ASL/AML BreakPoint operator so that it
3134 breaks into the AML debugger if the debugger is present. This matches the
3135 ACPI-defined behavior.
3137 Fixed several possible warnings related to the use of the configurable
3138 ACPI_THREAD_ID. This type can now be configured as either an integer or a
3139 pointer with no warnings. Also fixes several warnings in printf-like
3140 statements for the 64-bit build when the type is configured as a pointer.
3143 Fixed a number of possible warnings when compiling with gcc 4+ (depending
3145 warning options.) Examples include printf formats, aliasing, unused
3147 missing prototypes, missing switch default statements, use of non-ANSI
3148 library functions, use of non-ANSI constructs. See generate/unix/Makefile
3150 a list of warning options used with gcc 3 and 4. ACPICA BZ 735.
3152 Example Code and Data Size: These are the sizes for the OS-independent
3153 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3154 debug version of the code includes the debug output trace mechanism and
3156 much larger code and data size.
3159 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
3160 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
3162 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
3163 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
3165 2) iASL Compiler/Disassembler and Tools:
3167 iASL: Fixed a generation warning from Bison 2.3 and fixed several warnings
3171 iASL: Fixed a problem where the Unix/Linux versions of the compiler could
3173 correctly digest Windows/DOS formatted files (with CR/LF).
3175 iASL: Added a new option for "quiet mode" (-va) that produces only the
3176 compilation summary, not individual errors and warnings. Useful for large
3179 AcpiExec: Implemented a new option (-z) to enable a forced semaphore/mutex
3180 timeout that can be used to detect hang conditions during execution of AML
3181 code (includes both internal semaphores and AML-defined mutexes and
3184 Added new makefiles for the generation of acpica in a generic unix-like
3185 environment. These makefiles are intended to generate the acpica tools and
3186 utilities from the original acpica git source tree structure.
3188 Test Suites: Updated and cleaned up the documentation files. Updated the
3189 copyrights to 2009, affecting all source files. Use the new version of
3191 with quiet mode. Increased the number of available semaphores in the
3193 OSL, allowing the aslts to execute fully on Windows. For the Unix OSL,
3195 an alternate implementation of the semaphore timeout to allow aslts to
3196 execute fully on Cygwin.
3198 ----------------------------------------
3199 20 March 2009. Summary of changes for version 20090320:
3201 1) ACPI CA Core Subsystem:
3203 Fixed a possible race condition between AcpiWalkNamespace and dynamic
3205 unloads. Added a reader/writer locking mechanism to allow multiple
3207 namespace walks (readers), but block a dynamic table unload until it can
3209 exclusive write access to the namespace. This fixes a problem where a
3211 unload could (possibly catastrophically) delete the portion of the
3213 that is currently being examined by a walk. Adds a new file, utlock.c,
3215 implements the reader/writer lock mechanism. ACPICA BZ 749.
3217 Fixed a regression introduced in version 20090220 where a change to the
3219 handling could cause the ACPICA subsystem to access non-existent I/O
3222 Modified the handling of FADT register and table (FACS/DSDT) addresses.
3224 FADT can contain both 32-bit and 64-bit versions of these addresses.
3225 Previously, the 64-bit versions were favored, meaning that if both 32 and
3227 versions were valid, but not equal, the 64-bit version was used. This was
3228 found to cause some machines to fail. Now, in this case, the 32-bit
3230 is used instead. This now matches the Windows behavior.
3232 Implemented a new mechanism to protect certain I/O ports. Provides
3234 compatibility and protects the standard PC I/O ports from access via AML
3235 code. Adds a new file, hwvalid.c
3237 Fixed a possible extraneous warning message from the FADT support. The
3238 message warns of a 32/64 length mismatch between the legacy and GAS
3239 definitions for a register.
3241 Removed the obsolete AcpiOsValidateAddress OSL interface. This interface
3243 made obsolete by the port protection mechanism above. It was previously
3245 to validate the entire address range of an operation region, which could
3247 incorrect if the range included illegal ports, but fields within the
3248 operation region did not actually access those ports. Validation is now
3249 performed on a per-field basis instead of the entire region.
3251 Modified the handling of the PM1 Status Register ignored bit (bit 11.)
3252 Ignored bits must be "preserved" according to the ACPI spec. Usually, this
3253 means a read/modify/write when writing to the register. However, for
3255 registers, writing a one means clear the event. Writing a zero means
3257 the event (do not clear.) This behavior is clarified in the ACPI 4.0 spec,
3258 and the ACPICA code now simply always writes a zero to the ignored bit.
3260 Modified the handling of ignored bits for the PM1 A/B Control Registers.
3262 per the ACPI specification, for the control registers, preserve
3263 (read/modify/write) all bits that are defined as either reserved or
3266 Updated the handling of write-only bits in the PM1 A/B Control Registers.
3267 When reading the register, zero the write-only bits as per the ACPI spec.
3268 ACPICA BZ 443. Lin Ming.
3270 Removed "Linux" from the list of supported _OSI strings. Linux no longer
3271 wants to reply true to this request. The Windows strings are the only
3273 through the AML that are tested and known to work properly.
3276 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
3277 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
3279 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
3280 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
3282 2) iASL Compiler/Disassembler and Tools:
3284 Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c
3288 ----------------------------------------
3289 20 February 2009. Summary of changes for version 20090220:
3291 1) ACPI CA Core Subsystem:
3293 Optimized the ACPI register locking. Removed locking for reads from the
3295 bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock is
3296 not required when reading the single-bit registers. The
3297 AcpiGetRegisterUnlocked function is no longer needed and has been removed.
3298 This will improve performance for reads on these registers. ACPICA BZ 760.
3300 Fixed the parameter validation for AcpiRead/Write. Now return
3301 AE_BAD_PARAMETER if the input register pointer is null, and AE_BAD_ADDRESS
3303 the register has an address of zero. Previously, these cases simply
3305 AE_OK. For optional registers such as PM1B status/enable/control, the
3307 should check for a valid register address before calling. ACPICA BZ 748.
3309 Renamed the external ACPI bit register access functions. Renamed
3310 AcpiGetRegister and AcpiSetRegister to clarify the purpose of these
3311 functions. The new names are AcpiReadBitRegister and AcpiWriteBitRegister.
3312 Also, restructured the code for these functions by simplifying the code
3314 and condensing duplicate code to reduce code size.
3316 Added new functions to transparently handle the possibly split PM1 A/B
3317 registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two functions
3318 now handle the split registers for PM1 Status, Enable, and Control. ACPICA
3322 Added a function to handle the PM1 control registers,
3323 AcpiHwWritePm1Control.
3324 This function writes both of the PM1 control registers (A/B). These
3326 are different than the PM1 A/B status and enable registers in that
3328 values can be written to the A/B registers. Most notably, the SLP_TYP bits
3329 can be different, as per the values returned from the _Sx predefined
3332 Removed an extra register write within AcpiHwClearAcpiStatus. This
3334 was writing an optional PM1B status register twice. The existing call to
3336 low-level AcpiHwRegisterWrite automatically handles a possibly split PM1
3338 register. ACPICA BZ 751.
3340 Split out the PM1 Status registers from the FADT. Added new globals for
3342 registers (A/B), similar to the way the PM1 Enable registers are handled.
3343 Instead of overloading the FADT Event Register blocks. This makes the code
3344 clearer and less prone to error.
3346 Fixed the warning message for when the platform contains too many ACPI
3348 for the default size of the global root table data structure. The
3350 for the truncation value was incorrect.
3352 Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this
3353 obsolete macro, since it is now a simple reference to ->common.type. There
3354 were about 150 invocations of the macro across 41 files. ACPICA BZ 755.
3356 Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as
3357 TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to
3358 simply SLEEP_TYPE. ACPICA BZ 754.
3360 Conditionally compile the AcpiSetFirmwareWakingVector64 function. This
3361 function is only needed on 64-bit host operating systems and is thus not
3362 included for 32-bit hosts.
3364 Debug output: print the input and result for invocations of the _OSI
3366 control method via the ACPI_LV_INFO debug level. Also, reduced some of the
3367 verbosity of this debug level. Len Brown.
3369 Example Code and Data Size: These are the sizes for the OS-independent
3370 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3371 debug version of the code includes the debug output trace mechanism and
3373 much larger code and data size.
3376 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
3377 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
3379 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
3380 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
3382 2) iASL Compiler/Disassembler and Tools:
3384 Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the
3385 various legal performance profiles.
3387 ----------------------------------------
3388 23 January 2009. Summary of changes for version 20090123:
3390 1) ACPI CA Core Subsystem:
3392 Added the 2009 copyright to all module headers and signons. This affects
3393 virtually every file in the ACPICA core subsystem, the iASL compiler, and
3394 the tools/utilities.
3396 Implemented a change to allow the host to override any ACPI table,
3398 dynamically loaded tables. Previously, only the DSDT could be replaced by
3400 host. With this change, the AcpiOsTableOverride interface is called for
3402 table found in the RSDT/XSDT during ACPICA initialization, and also
3404 a table is dynamically loaded via the AML Load operator.
3406 Updated FADT flag definitions, especially the Boot Architecture flags.
3408 Debugger: For the Find command, automatically pad the input ACPI name with
3409 underscores if the name is shorter than 4 characters. This enables a match
3410 with the actual namespace entry which is itself padded with underscores.
3412 Example Code and Data Size: These are the sizes for the OS-independent
3413 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3414 debug version of the code includes the debug output trace mechanism and
3416 much larger code and data size.
3419 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
3420 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
3422 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
3423 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
3425 2) iASL Compiler/Disassembler and Tools:
3427 Fix build error under Bison-2.4.
3429 Dissasembler: Enhanced FADT support. Added decoding of the Boot
3431 flags. Now decode all flags, regardless of the FADT version. Flag output
3432 includes the FADT version which first defined each flag.
3434 The iASL -g option now dumps the RSDT to a file (in addition to the FADT
3436 DSDT). Windows only.
3438 ----------------------------------------
3439 04 December 2008. Summary of changes for version 20081204:
3441 1) ACPI CA Core Subsystem:
3443 The ACPICA Programmer Reference has been completely updated and revamped
3445 this release. This includes updates to the external interfaces, OSL
3446 interfaces, the overview sections, and the debugger reference.
3448 Several new ACPICA interfaces have been implemented and documented in the
3449 programmer reference:
3450 AcpiReset - Writes the reset value to the FADT-defined reset register.
3451 AcpiDisableAllGpes - Disable all available GPEs.
3452 AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs.
3453 AcpiGetGpeDevice - Get the GPE block device associated with a GPE.
3454 AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs.
3455 AcpiRead - Low-level read ACPI register (was HwLowLevelRead.)
3456 AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.)
3458 Most of the public ACPI hardware-related interfaces have been moved to a
3460 file, components/hardware/hwxface.c
3462 Enhanced the FADT parsing and low-level ACPI register access: The ACPI
3463 register lengths within the FADT are now used, and the low level ACPI
3464 register access no longer hardcodes the ACPI register lengths. Given that
3465 there may be some risk in actually trusting the FADT register lengths, a
3467 time option was added to fall back to the default hardcoded lengths if the
3468 FADT proves to contain incorrect values - UseDefaultRegisterWidths. This
3469 option is set to true for now, and a warning is issued if a suspicious
3471 register length is overridden with the default value.
3473 Fixed a reference count issue in NsRepairObject. This problem was
3475 in version 20081031 as part of a fix to repair Buffer objects within
3478 Added semaphore support to the Linux/Unix application OS-services layer
3479 (OSL). ACPICA BZ 448. Lin Ming.
3481 Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes
3483 be implemented in the OSL, or will binary semaphores be used instead.
3485 Example Code and Data Size: These are the sizes for the OS-independent
3486 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3487 debug version of the code includes the debug output trace mechanism and
3489 much larger code and data size.
3492 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
3493 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
3495 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
3496 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
3498 2) iASL Compiler/Disassembler and Tools:
3500 iASL: Completed the '-e' option to include additional ACPI tables in order
3502 aid with disassembly and External statement generation. ACPICA BZ 742. Lin
3505 iASL: Removed the "named object in while loop" error. The compiler cannot
3506 determine how many times a loop will execute. ACPICA BZ 730.
3508 Disassembler: Implemented support for FADT revision 2 (MS extension).
3512 Disassembler: Updates for several ACPI data tables (HEST, EINJ, and MCFG).
3514 ----------------------------------------
3515 31 October 2008. Summary of changes for version 20081031:
3517 1) ACPI CA Core Subsystem:
3519 Restructured the ACPICA header files into public/private. acpi.h now
3521 only the "public" acpica headers. All other acpica headers are "private"
3523 should not be included by acpica users. One new file, accommon.h is used
3525 include the commonly used private headers for acpica code generation.
3527 plans include moving all private headers to a new subdirectory.
3529 Implemented an automatic Buffer->String return value conversion for
3530 predefined ACPI methods. For these methods (such as _BIF), added automatic
3531 conversion for return objects that are required to be a String, but a
3533 was found instead. This can happen when reading string battery data from
3535 operation region, because it used to be difficult to convert the data from
3536 buffer to string from within the ASL. Ensures that the host OS is provided
3537 with a valid null-terminated string. Linux BZ 11822.
3539 Updated the FACS waking vector interfaces. Split
3540 AcpiSetFirmwareWakingVector
3541 into two: one for the 32-bit vector, another for the 64-bit vector. This
3543 required because the host OS must setup the wake much differently for each
3544 vector (real vs. protected mode, etc.) and the interface itself should not
3546 deciding which vector to use. Also, eliminated the GetFirmwareWakingVector
3547 interface, as it served no purpose (only the firmware reads the vector, OS
3548 only writes the vector.) ACPICA BZ 731.
3550 Implemented a mechanism to escape infinite AML While() loops. Added a loop
3551 counter to force exit from AML While loops if the count becomes too large.
3552 This can occur in poorly written AML when the hardware does not respond
3553 within a while loop and the loop does not implement a timeout. The maximum
3554 loop count is configurable. A new exception code is returned when a loop
3556 broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore.
3558 Optimized the execution of AML While loops. Previously, a control state
3559 object was allocated and freed for each execution of the loop. The
3560 optimization is to simply reuse the control state for each iteration. This
3561 speeds up the raw loop execution time by about 5%.
3563 Enhanced the implicit return mechanism. For Windows compatibility, return
3565 implicit integer of value zero for methods that contain no executable
3567 Such methods are seen in the field as stubs (presumably), and can cause
3568 drivers to fail if they expect a return value. Lin Ming.
3570 Allow multiple backslashes as root prefixes in namepaths. In a fully
3571 qualified namepath, allow multiple backslash prefixes. This can happen
3573 is seen in the field) because of the use of a double-backslash in strings
3574 (since backslash is the escape character) causing confusion. ACPICA BZ 739
3577 Emit a warning if two different FACS or DSDT tables are discovered in the
3578 FADT. Checks if there are two valid but different addresses for the FACS
3580 DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.)
3582 Consolidated the method argument count validation code. Merged the code
3584 validates control method argument counts into the predefined validation
3585 module. Eliminates possible multiple warnings for incorrect argument
3588 Implemented ACPICA example code. Includes code for ACPICA initialization,
3589 handler installation, and calling a control method. Available at
3590 source/tools/examples.
3592 Added a global pointer for FACS table to simplify internal FACS access.
3594 the global pointer instead of using AcpiGetTableByIndex for each FACS
3596 This simplifies the code for the Global Lock and the Firmware Waking
3599 Example Code and Data Size: These are the sizes for the OS-independent
3600 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3601 debug version of the code includes the debug output trace mechanism and
3603 much larger code and data size.
3606 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
3607 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
3609 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
3610 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
3612 2) iASL Compiler/Disassembler and Tools:
3614 iASL: Improved disassembly of external method calls. Added the -e option
3616 allow the inclusion of additional ACPI tables to help with the disassembly
3618 method invocations and the generation of external declarations during the
3619 disassembly. Certain external method invocations cannot be disassembled
3620 properly without the actual declaration of the method. Use the -e option
3622 include the table where the external method(s) are actually declared. Most
3623 useful for disassembling SSDTs that make method calls back to the master
3624 DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl
3626 -e dsdt.aml ssdt1.aml
3628 iASL: Fix to allow references to aliases within ASL namepaths. Fixes a
3629 problem where the use of an alias within a namepath would result in a not
3630 found error or cause the compiler to fault. Also now allows forward
3631 references from the Alias operator itself. ACPICA BZ 738.
3633 ----------------------------------------
3634 26 September 2008. Summary of changes for version 20080926:
3636 1) ACPI CA Core Subsystem:
3638 Designed and implemented a mechanism to validate predefined ACPI methods
3640 objects. This code validates the predefined ACPI objects (objects whose
3642 start with underscore) that appear in the namespace, at the time they are
3643 evaluated. The argument count and the type of the returned object are
3644 validated against the ACPI specification. The purpose of this validation
3646 to detect problems with the BIOS-implemented predefined ACPI objects
3648 the results are returned to the ACPI-related drivers. Future enhancements
3650 include actual repair of incorrect return objects where possible. Two new
3651 files are nspredef.c and acpredef.h.
3653 Fixed a fault in the AML parser if a memory allocation fails during the Op
3654 completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492.
3656 Fixed an issue with implicit return compatibility. This change improves
3658 implicit return mechanism to be more compatible with the MS interpreter.
3660 Ming, ACPICA BZ 349.
3662 Implemented support for zero-length buffer-to-string conversions. Allow
3664 length strings during interpreter buffer-to-string conversions. For
3666 during the ToDecimalString and ToHexString operators, as well as implicit
3667 conversions. Fiodor Suietov, ACPICA BZ 585.
3669 Fixed two possible memory leaks in the error exit paths of
3670 AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions are
3671 similar in that they use a stack of state objects in order to eliminate
3672 recursion. The stack must be fully unwound and deallocated if an error
3673 occurs. Lin Ming. ACPICA BZ 383.
3675 Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the
3677 ACPI register table. This bit does not exist and is unused. Lin Ming, Bob
3678 Moore ACPICA BZ 442.
3680 Removed the obsolete version number in module headers. Removed the
3681 "$Revision" number that appeared in each module header. This version
3683 was useful under SourceSafe and CVS, but has no meaning under git. It is
3685 only incorrect, it could also be misleading.
3687 Example Code and Data Size: These are the sizes for the OS-independent
3688 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3689 debug version of the code includes the debug output trace mechanism and
3691 much larger code and data size.
3694 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
3695 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
3697 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
3698 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
3700 ----------------------------------------
3701 29 August 2008. Summary of changes for version 20080829:
3703 1) ACPI CA Core Subsystem:
3705 Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type
3706 Reference. Changes include the elimination of cheating on the Object field
3707 for the DdbHandle subtype, addition of a reference class field to
3708 differentiate the various reference types (instead of an AML opcode), and
3710 cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723
3712 Reduce an error to a warning for an incorrect method argument count.
3713 Previously aborted with an error if too few arguments were passed to a
3714 control method via the external ACPICA interface. Now issue a warning
3716 and continue. Handles the case where the method inadvertently declares too
3717 many arguments, but does not actually use the extra ones. Applies mainly
3719 the predefined methods. Lin Ming. Linux BZ 11032.
3721 Disallow the evaluation of named object types with no intrinsic value.
3723 AE_TYPE for objects that have no value and therefore evaluation is
3725 Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation
3727 these types were allowed, but an exception would be generated at some
3729 during the evaluation. Now, the error is generated up front.
3731 Fixed a possible memory leak in the AcpiNsGetExternalPathname function
3732 (nsnames.c). Fixes a leak in the error exit path.
3734 Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These
3736 levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and
3738 interfaces. Also added ACPI_DB_EVENTS to correspond with the existing
3741 Removed obsolete and/or unused exception codes from the acexcep.h header.
3742 There is the possibility that certain device drivers may be affected if
3744 use any of these exceptions.
3746 The ACPICA documentation has been added to the public git source tree,
3748 acpica/documents. Included are the ACPICA programmer reference, the iASL
3749 compiler reference, and the changes.txt release logfile.
3751 Example Code and Data Size: These are the sizes for the OS-independent
3752 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3753 debug version of the code includes the debug output trace mechanism and
3755 much larger code and data size.
3758 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
3759 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
3761 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
3762 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
3764 2) iASL Compiler/Disassembler and Tools:
3766 Allow multiple argument counts for the predefined _SCP method. ACPI 3.0
3767 defines _SCP with 3 arguments. Previous versions defined it with only 1
3768 argument. iASL now allows both definitions.
3770 iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for zero-
3771 length subtables when disassembling ACPI tables. Also fixed a couple of
3772 errors where a full 16-bit table type field was not extracted from the
3776 acpisrc: Improve comment counting mechanism for generating source code
3777 statistics. Count first and last lines of multi-line comments as
3779 not comment lines. Handle Linux legal header in addition to standard
3783 ----------------------------------------
3785 29 July 2008. Summary of changes for version 20080729:
3787 1) ACPI CA Core Subsystem:
3789 Fix a possible deadlock in the GPE dispatch. Remove call to
3790 AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will
3792 to acquire the GPE lock but can deadlock since the GPE lock is already
3794 at dispatch time. This code was introduced in version 20060831 as a
3796 to Linux BZ 6881 and has since been removed from Linux.
3798 Add a function to dereference returned reference objects. Examines the
3800 object from a call to AcpiEvaluateObject. Any Index or RefOf references
3802 automatically dereferenced in an attempt to return something useful (these
3803 reference types cannot be converted into an external ACPI_OBJECT.)
3805 MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105
3807 x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new
3808 subtables for the MADT and one new subtable for the SRAT. Includes
3809 disassembler and AcpiSrc support. Data from the Intel 64 Architecture
3811 Specification, June 2008.
3813 Additional error checking for pathname utilities. Add error check after
3815 calls to AcpiNsGetPathnameLength. Add status return from
3816 AcpiNsBuildExternalPath and check after all calls. Add parameter
3818 to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar.
3820 Return status from the global init function AcpiUtGlobalInitialize. This
3822 used by both the kernel subsystem and the utilities such as iASL compiler.
3823 The function could possibly fail when the caches are initialized. Yang Yi.
3825 Add a function to decode reference object types to strings. Created for
3826 improved error messages.
3828 Improve object conversion error messages. Better error messages during
3830 conversion from internal to the external ACPI_OBJECT. Used for external
3832 to AcpiEvaluateObject.
3834 Example Code and Data Size: These are the sizes for the OS-independent
3835 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3836 debug version of the code includes the debug output trace mechanism and
3838 much larger code and data size.
3841 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
3842 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
3844 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
3845 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
3847 2) iASL Compiler/Disassembler and Tools:
3849 Debugger: fix a possible hang when evaluating non-methods. Fixes a problem
3850 introduced in version 20080701. If the object being evaluated (via execute
3851 command) is not a method, the debugger can hang while trying to obtain
3853 existent parameters.
3855 iASL: relax error for using reserved "_T_x" identifiers. These names can
3856 appear in a disassembled ASL file if they were emitted by the original
3857 compiler. Instead of issuing an error or warning and forcing the user to
3858 manually change these names, issue a remark instead.
3860 iASL: error if named object created in while loop. Emit an error if any
3862 object is created within a While loop. If allowed, this code will generate
3864 run-time error on the second iteration of the loop when an attempt is made
3866 create the same named object twice. ACPICA bugzilla 730.
3868 iASL: Support absolute pathnames for include files. Add support for
3870 pathnames within the Include operator. previously, only relative pathnames
3873 iASL: Enforce minimum 1 interrupt in interrupt macro and Resource
3875 The ACPI spec requires one interrupt minimum. BZ 423
3877 iASL: Handle a missing ResourceSource arg, with a present SourceIndex.
3878 Handles the case for the Interrupt Resource Descriptor where
3879 the ResourceSource argument is omitted but ResourceSourceIndex
3880 is present. Now leave room for the Index. BZ 426
3882 iASL: Prevent error message if CondRefOf target does not exist. Fixes
3884 where an error message is emitted if the target does not exist. BZ 516
3886 iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option
3887 (get ACPI tables on Windows). This was apparently broken in version
3890 AcpiXtract: Handle EOF while extracting data. Correctly handle the case
3892 the EOF happens immediately after the last table in the input file. Print
3893 completion message. Previously, no message was displayed in this case.
3895 ----------------------------------------
3896 01 July 2008. Summary of changes for version 20080701:
3898 0) Git source tree / acpica.org
3900 Fixed a problem where a git-clone from http would not transfer the entire
3903 1) ACPI CA Core Subsystem:
3905 Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one
3906 enable bit. Now performs a read-change-write of the enable register
3908 of simply writing out the cached enable mask. This will prevent
3910 enabling of GPEs if a rogue GPE is received during initialization (before
3912 handlers are installed.)
3914 Implemented a copy for dynamically loaded tables. Previously, dynamically
3915 loaded tables were simply mapped - but on some machines this memory is
3916 corrupted after suspend. Now copy the table to a local buffer. For the
3917 OpRegion case, added checksum verify. Use the table length from the table
3918 header, not the region length. For the Buffer case, use the table length
3919 also. Dennis Noordsij, Bob Moore. BZ 10734
3921 Fixed a problem where the same ACPI table could not be dynamically loaded
3923 unloaded more than once. Without this change, a table cannot be loaded
3925 once it has been loaded/unloaded one time. The current mechanism does not
3926 unregister a table upon an unload. During a load, if the same table is
3928 this no longer returns an exception. BZ 722
3930 Fixed a problem where the wrong descriptor length was calculated for the
3931 EndTag descriptor in 64-bit mode. The "minimal" descriptors such as EndTag
3932 are calculated as 12 bytes long, but the actual length in the internal
3933 descriptor is 16 because of the round-up to 8 on the 64-bit build.
3935 by Linn Crosetto. BZ 728
3937 Fixed a possible memory leak in the Unload operator. The DdbHandle
3939 by Load() did not have its reference count decremented during unload,
3941 to a memory leak. Lin Ming. BZ 727
3943 Fixed a possible memory leak when deleting thermal/processor objects. Any
3944 associated notify handlers (and objects) were not being deleted. Fiodor
3947 Fixed the ordering of the ASCII names in the global mutex table to match
3949 actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug
3951 Vegard Nossum. BZ 726
3953 Enhanced the AcpiGetObjectInfo interface to return the number of required
3954 arguments if the object is a control method. Added this call to the
3956 so the proper number of default arguments are passed to a method. This
3957 prevents a warning when executing methods from AcpiExec.
3959 Added a check for an invalid handle in AcpiGetObjectInfo. Return
3960 AE_BAD_PARAMETER if input handle is invalid. BZ 474
3962 Fixed an extraneous warning from exconfig.c on the 64-bit build.
3964 Example Code and Data Size: These are the sizes for the OS-independent
3965 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3966 debug version of the code includes the debug output trace mechanism and
3968 much larger code and data size.
3971 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
3972 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
3974 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
3975 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
3977 2) iASL Compiler/Disassembler and Tools:
3979 iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both
3980 resource descriptor names.
3982 iASL: Detect invalid ASCII characters in input (windows version). Removed
3984 "-CF" flag from the flex compile, enables correct detection of non-ASCII
3985 characters in the input. BZ 441
3987 iASL: Eliminate warning when result of LoadTable is not used. Eliminate
3989 "result of operation not used" warning when the DDB handle returned from
3990 LoadTable is not used. The warning is not needed. BZ 590
3992 AcpiExec: Add support for dynamic table load/unload. Now calls _CFG method
3994 pass address of table to the AML. Added option to disable OpRegion
3996 to allow creation of an OpRegion with a real address that was passed to
3998 All of this allows testing of the Load and Unload operators from AcpiExec.
4000 Debugger: update tables command for unloaded tables. Handle unloaded
4002 and use the standard table header output routine.
4004 ----------------------------------------
4005 09 June 2008. Summary of changes for version 20080609:
4007 1) ACPI CA Core Subsystem:
4009 Implemented a workaround for reversed _PRT entries. A significant number
4011 BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This
4012 change dynamically detects and repairs this problem. Provides
4014 with MS ACPI. BZ 6859
4016 Simplified the internal ACPI hardware interfaces to eliminate the locking
4017 flag parameter from Register Read/Write. Added a new external interface,
4018 AcpiGetRegisterUnlocked.
4020 Fixed a problem where the invocation of a GPE control method could hang.
4022 was a regression introduced in 20080514. The new method argument count
4023 validation mechanism can enter an infinite loop when a GPE method is
4024 dispatched. Problem fixed by removing the obsolete code that passed GPE
4026 information to the notify handler via the control method parameter
4029 Fixed a problem where the _SST execution status was incorrectly returned
4031 the caller of AcpiEnterSleepStatePrep. This was a regression introduced in
4032 20080514. _SST is optional and a NOT_FOUND exception should never be
4035 Fixed a problem where a deleted object could be accessed from within the
4037 parser. This was a regression introduced in version 20080123 as a fix for
4039 Unload operator. Lin Ming. BZ 10669
4041 Cleaned up the debug operand dump mechanism. Eliminated unnecessary
4043 and eliminated the use of a negative index in a loop. Operands are now
4044 displayed in the correct order, not backwards. This also fixes a
4046 introduced in 20080514 on 64-bit systems where the elimination of
4047 ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ
4050 Fixed a possible memory leak in EvPciConfigRegionSetup where the error
4052 path did not delete a locally allocated structure.
4054 Updated definitions for the DMAR and SRAT tables to synchronize with the
4055 current specifications. Includes disassembler support.
4057 Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect
4058 loop termination value was used. Loop terminated on iteration early,
4060 one mutex. Linn Crosetto
4062 Example Code and Data Size: These are the sizes for the OS-independent
4063 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4064 debug version of the code includes the debug output trace mechanism and
4066 much larger code and data size.
4069 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
4070 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
4072 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
4073 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
4075 2) iASL Compiler/Disassembler and Tools:
4077 Disassembler: Implemented support for EisaId() within _CID objects. Now
4078 disassemble integer _CID objects back to EisaId invocations, including
4079 multiple integers within _CID packages. Includes single-step support for
4082 Disassembler: Added support for DMAR and SRAT table definition changes.
4084 ----------------------------------------
4085 14 May 2008. Summary of changes for version 20080514:
4087 1) ACPI CA Core Subsystem:
4089 Fixed a problem where GPEs were enabled too early during the ACPICA
4090 initialization. This could lead to "handler not installed" errors on some
4091 machines. Moved GPE enable until after _REG/_STA/_INI methods are run.
4093 ensures that all operation regions and devices throughout the namespace
4095 been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916.
4097 Implemented a change to the enter sleep code. Moved execution of the _GTS
4098 method to just before setting sleep enable bit. The execution was moved
4100 AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed
4101 immediately before the SLP_EN bit is set, as per the ACPI specification.
4104 Implemented a fix to disable unknown GPEs (2nd version). Now always
4106 the GPE, even if ACPICA thinks that that it is already disabled. It is
4107 possible that the AML or some other code has enabled the GPE unbeknownst
4111 Fixed a problem with the Field operator where zero-length fields would
4113 an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length
4115 field declarations in Field(), BankField(), and IndexField(). BZ 10606.
4117 Implemented a fix for the Load operator, now load the table at the
4119 root. This reverts a change introduced in version 20071019. The table is
4121 loaded at the namespace root even though this goes against the ACPI
4122 specification. This provides compatibility with other ACPI
4124 The ACPI specification will be updated to reflect this in ACPI 4.0. Lin
4127 Fixed a problem where ACPICA would not Load() tables with unusual
4129 Now ignore ACPI table signature for Load() operator. Only "SSDT" is
4130 acceptable to the ACPI spec, but tables are seen with OEMx and null sigs.
4131 Therefore, signature validation is worthless. Apparently MS ACPI accepts
4133 signatures, ACPICA must be compatible. BZ 10454.
4135 Fixed a possible negative array index in AcpiUtValidateException. Added
4137 fields to the exception string arrays to eliminate a -1 subtraction on the
4140 Updated the debug tracking macros to reduce overall code and data size.
4141 Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings
4142 instead of pointers to static strings. Jan Beulich and Bob Moore.
4144 Implemented argument count checking in control method invocation via
4145 AcpiEvaluateObject. Now emit an error if too few arguments, warning if too
4146 many. This applies only to extern programmatic control method execution,
4148 method-to-method calls within the AML. Lin Ming.
4150 Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is
4152 longer needed, especially with the removal of 16-bit support. It was
4154 mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 bit
4156 32/64-bit platforms is required.
4158 Added the C const qualifier for appropriate string constants -- mostly
4159 MODULE_NAME and printf format strings. Jan Beulich.
4161 Example Code and Data Size: These are the sizes for the OS-independent
4162 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4163 debug version of the code includes the debug output trace mechanism and
4165 much larger code and data size.
4168 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
4169 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
4171 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
4172 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
4174 2) iASL Compiler/Disassembler and Tools:
4176 Implemented ACPI table revision ID validation in the disassembler. Zero is
4177 always invalid. For DSDTs, the ID controls the interpreter integer width.
4179 means 32-bit and this is unusual. 2 or greater is 64-bit.
4181 ----------------------------------------
4182 21 March 2008. Summary of changes for version 20080321:
4184 1) ACPI CA Core Subsystem:
4186 Implemented an additional change to the GPE support in order to suppress
4187 spurious or stray GPEs. The AcpiEvDisableGpe function will now permanently
4188 disable incoming GPEs that are neither enabled nor disabled -- meaning
4190 the GPE is unknown to the system. This should prevent future interrupt
4192 from that GPE. BZ 6217 (Zhang Rui)
4194 Fixed a problem where NULL package elements were not returned to the
4195 AcpiEvaluateObject interface correctly. The element was simply ignored
4196 instead of returning a NULL ACPI_OBJECT package element, potentially
4198 a buffer overflow and/or confusing the caller who expected a fixed number
4200 elements. BZ 10132 (Lin Ming, Bob Moore)
4202 Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word,
4204 Qword), Field, BankField, and IndexField operators when invoked from
4206 an executing control method. In this case, these operators created
4208 nodes that were incorrectly left marked as permanent nodes instead of
4209 temporary nodes. This could cause a problem if there is race condition
4210 between an exiting control method and a running namespace walk. (Reported
4214 Fixed a problem where the CreateField and CreateXXXField operators would
4215 incorrectly allow duplicate names (the name of the field) with no
4219 Implemented several changes for Notify handling. Added support for new
4221 values (ACPI 2.0+) and improved the Notify debug output. Notify on
4222 PowerResource objects is no longer allowed, as per the ACPI specification.
4223 (Bob Moore, Zhang Rui)
4225 All Reference Objects returned via the AcpiEvaluateObject interface are
4227 marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved
4229 NULL objects - either NULL package elements or unresolved named
4232 Fixed a problem where an extraneous debug message was produced for package
4233 objects (when debugging enabled). The message "Package List length larger
4234 than NumElements count" is now produced in the correct case, and is now an
4235 error message rather than a debug message. Added a debug message for the
4236 opposite case, where NumElements is larger than the Package List (the
4238 will be padded out with NULL elements as per the ACPI spec.)
4240 Implemented several improvements for the output of the ASL "Debug" object
4242 clarify and keep all data for a given object on one output line.
4244 Fixed two size calculation issues with the variable-length Start Dependent
4245 resource descriptor.
4247 Example Code and Data Size: These are the sizes for the OS-independent
4248 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4249 debug version of the code includes the debug output trace mechanism and
4251 a much larger code and data size.
4254 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
4255 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
4257 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
4258 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
4260 2) iASL Compiler/Disassembler and Tools:
4262 Fixed a problem with the use of the Switch operator where execution of the
4263 containing method by multiple concurrent threads could cause an
4264 AE_ALREADY_EXISTS exception. This is caused by the fact that there is no
4265 actual Switch opcode, it must be simulated with local named temporary
4266 variables and if/else pairs. The solution chosen was to mark any method
4268 uses Switch as Serialized, thus preventing multiple thread entries. BZ
4271 ----------------------------------------
4272 13 February 2008. Summary of changes for version 20080213:
4274 1) ACPI CA Core Subsystem:
4276 Implemented another MS compatibility design change for GPE/Notify
4278 GPEs are now cleared/enabled asynchronously to allow all pending notifies
4280 complete first. It is expected that the OSL will queue the enable request
4281 behind all pending notify requests (may require changes to the local host
4283 in AcpiOsExecute). Alexey Starikovskiy.
4285 Fixed a problem where buffer and package objects passed as arguments to a
4286 control method via the external AcpiEvaluateObject interface could cause
4288 AE_AML_INTERNAL exception depending on the order and type of operators
4289 executed by the target control method.
4291 Fixed a problem where resource descriptor size optimization could cause a
4292 problem when a _CRS resource template is passed to a _SRS method. The _SRS
4293 resource template must use the same descriptors (with the same size) as
4294 returned from _CRS. This change affects the following resource
4296 IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ
4299 Fixed a problem where a CopyObject to RegionField, BankField, and
4301 objects did not perform an implicit conversion as it should. These types
4303 retain their initial type permanently as per the ACPI specification.
4305 a CopyObject to all other object types should not perform an implicit
4306 conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388
4308 Fixed a problem with the AcpiGetDevices interface where the mechanism to
4309 match device CIDs did not examine the entire list of available CIDs, but
4310 instead aborted on the first non-matching CID. Andrew Patterson.
4312 Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro
4314 inadvertently changed to return a 16-bit value instead of a 32-bit value,
4315 truncating the upper dword of a 64-bit value. This macro is only used to
4316 display debug output, so no incorrect calculations were made. Also,
4317 reimplemented the macro so that a 64-bit shift is not performed by
4318 inefficient compilers.
4320 Added missing va_end statements that should correspond with each va_start
4323 Example Code and Data Size: These are the sizes for the OS-independent
4324 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4325 debug version of the code includes the debug output trace mechanism and
4327 a much larger code and data size.
4330 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
4331 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
4333 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
4334 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
4336 2) iASL Compiler/Disassembler and Tools:
4338 Implemented full disassembler support for the following new ACPI tables:
4339 BERT, EINJ, and ERST. Implemented partial disassembler support for the
4340 complicated HEST table. These tables support the Windows Hardware Error
4341 Architecture (WHEA).
4343 ----------------------------------------
4344 23 January 2008. Summary of changes for version 20080123:
4346 1) ACPI CA Core Subsystem:
4348 Added the 2008 copyright to all module headers and signons. This affects
4349 virtually every file in the ACPICA core subsystem, the iASL compiler, and
4350 the tools/utilities.
4352 Fixed a problem with the SizeOf operator when used with Package and Buffer
4353 objects. These objects have deferred execution for some arguments, and the
4354 execution is now completed before the SizeOf is executed. This problem
4356 unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore)
4360 Implemented an enhancement to the interpreter "slack mode". In the absence
4362 an explicit return or an implicitly returned object from the last executed
4363 opcode, a control method will now implicitly return an integer of value 0
4365 Microsoft compatibility. (Lin Ming) BZ 392
4367 Fixed a problem with the Load operator where an exception was not returned
4369 the case where the table is already loaded. (Lin Ming) BZ 463
4371 Implemented support for the use of DDBHandles as an Indexed Reference, as
4373 the ACPI spec. (Lin Ming) BZ 486
4375 Implemented support for UserTerm (Method invocation) for the Unload
4377 as per the ACPI spec. (Lin Ming) BZ 580
4379 Fixed a problem with the LoadTable operator where the OemId and OemTableId
4380 input strings could cause unexpected failures if they were shorter than
4382 maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576
4384 Implemented support for UserTerm (Method invocation) for the Unload
4386 as per the ACPI spec. (Lin Ming) BZ 580
4388 Implemented header file support for new ACPI tables - BERT, ERST, EINJ,
4390 IBFT, UEFI, WDAT. Disassembler support is forthcoming.
4392 Example Code and Data Size: These are the sizes for the OS-independent
4393 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4394 debug version of the code includes the debug output trace mechanism and
4396 a much larger code and data size.
4399 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
4400 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
4402 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
4403 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
4405 2) iASL Compiler/Disassembler and Tools:
4407 Implemented support in the disassembler for checksum validation on
4409 binary DSDTs and SSDTs. If incorrect, a message is displayed within the
4411 header dump at the start of the disassembly.
4413 Implemented additional debugging information in the namespace listing file
4414 created during compilation. In addition to the namespace hierarchy, the
4416 pathname to each namespace object is displayed.
4418 Fixed a problem with the disassembler where invalid ACPI tables could
4420 faults or infinite loops.
4422 Fixed an unexpected parse error when using the optional "parameter types"
4423 list in a control method declaration. (Lin Ming) BZ 397
4425 Fixed a problem where two External declarations with the same name did not
4426 cause an error (Lin Ming) BZ 509
4428 Implemented support for full TermArgs (adding Argx, Localx and method
4429 invocation) for the ParameterData parameter to the LoadTable operator.
4433 ----------------------------------------
4434 19 December 2007. Summary of changes for version 20071219:
4436 1) ACPI CA Core Subsystem:
4438 Implemented full support for deferred execution for the TermArg string
4439 arguments for DataTableRegion. This enables forward references and full
4440 operand resolution for the three string arguments. Similar to
4442 deferred argument execution.) Lin Ming. BZ 430
4444 Implemented full argument resolution support for the BankValue argument to
4445 BankField. Previously, only constants were supported, now any TermArg may
4447 used. Lin Ming BZ 387, 393
4449 Fixed a problem with AcpiGetDevices where the search of a branch of the
4450 device tree could be terminated prematurely. In accordance with the ACPI
4451 specification, the search down the current branch is terminated if a
4453 is both not present and not functional (instead of just not present.)
4457 Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly
4459 the underlying AML code changed the GPE enable registers. Now, any unknown
4460 incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately
4462 instead of simply ignored. Rui Zhang.
4464 Fixed a problem with Index Fields where the Index register was incorrectly
4465 limited to a maximum of 32 bits. Now any size may be used.
4467 Fixed a couple memory leaks associated with "implicit return" objects when
4468 the AML Interpreter slack mode is enabled. Lin Ming BZ 349
4470 Example Code and Data Size: These are the sizes for the OS-independent
4471 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4472 debug version of the code includes the debug output trace mechanism and
4474 a much larger code and data size.
4477 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
4478 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
4480 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
4481 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
4483 ----------------------------------------
4484 14 November 2007. Summary of changes for version 20071114:
4486 1) ACPI CA Core Subsystem:
4488 Implemented event counters for each of the Fixed Events, the ACPI SCI
4489 (interrupt) itself, and control methods executed. Named
4490 AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively.
4492 should be useful for debugging and statistics.
4494 Implemented a new external interface, AcpiGetStatistics, to retrieve the
4495 contents of the various event counters. Returns the current values for
4496 AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and
4497 AcpiMethodCount. The interface can be expanded in the future if new
4499 are added. Device drivers should use this interface rather than access the
4502 Fixed a problem with the FromBCD and ToBCD operators. With some compilers,
4503 the ShortDivide function worked incorrectly, causing problems with the BCD
4504 functions with large input values. A truncation from 64-bit to 32-bit
4505 inadvertently occurred. Internal BZ 435. Lin Ming
4507 Fixed a problem with Index references passed as method arguments.
4509 passed as arguments to control methods were dereferenced immediately
4511 control was passed to the called method). The references are now correctly
4512 passed directly to the called method. BZ 5389. Lin Ming
4514 Fixed a problem with CopyObject used in conjunction with the Index
4516 The reference was incorrectly dereferenced before the copy. The reference
4518 now correctly copied. BZ 5391. Lin Ming
4520 Fixed a problem with Control Method references within Package objects.
4522 references are now correctly generated. This completes the package
4523 construction overhaul that began in version 20071019.
4525 Example Code and Data Size: These are the sizes for the OS-independent
4526 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4527 debug version of the code includes the debug output trace mechanism and
4529 a much larger code and data size.
4532 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
4533 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
4535 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
4536 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
4539 2) iASL Compiler/Disassembler and Tools:
4541 The AcpiExec utility now installs handlers for all of the predefined
4542 Operation Region types. New types supported are: PCI_Config, CMOS, and
4545 Fixed a problem with the 64-bit version of AcpiExec where the extended
4547 bit) address fields for the DSDT and FACS within the FADT were not being
4548 used, causing truncation of the upper 32-bits of these addresses. Lin Ming
4551 ----------------------------------------
4552 19 October 2007. Summary of changes for version 20071019:
4554 1) ACPI CA Core Subsystem:
4556 Fixed a problem with the Alias operator when the target of the alias is a
4557 named ASL operator that opens a new scope -- Scope, Device, PowerResource,
4558 Processor, and ThermalZone. In these cases, any children of the original
4559 operator could not be accessed via the alias, potentially causing
4561 AE_NOT_FOUND exceptions. (BZ 9067)
4563 Fixed a problem with the Package operator where all named references were
4564 created as object references and left otherwise unresolved. According to
4566 ACPI specification, a Package can only contain Data Objects or references
4568 control methods. The implication is that named references to Data Objects
4569 (Integer, Buffer, String, Package, BufferField, Field) should be resolved
4570 immediately upon package creation. This is the approach taken with this
4571 change. References to all other named objects (Methods, Devices, Scopes,
4572 etc.) are all now properly created as reference objects. (BZ 5328)
4574 Reverted a change to Notify handling that was introduced in version
4575 20070508. This version changed the Notify handling from asynchronous to
4576 fully synchronous (Device driver Notify handling with respect to the
4578 ASL operator). It was found that this change caused more problems than it
4579 solved and was removed by most users.
4581 Fixed a problem with the Increment and Decrement operators where the type
4583 the target object could be unexpectedly and incorrectly changed. (BZ 353)
4586 Fixed a problem with the Load and LoadTable operators where the table
4587 location within the namespace was ignored. Instead, the table was always
4588 loaded into the root or current scope. Lin Ming.
4590 Fixed a problem with the Load operator when loading a table from a buffer
4591 object. The input buffer was prematurely zeroed and/or deleted. (BZ 577)
4593 Fixed a problem with the Debug object where a store of a DdbHandle
4595 object to the Debug object could cause a fault.
4597 Added a table checksum verification for the Load operator, in the case
4599 the load is from a buffer. (BZ 578).
4601 Implemented additional parameter validation for the LoadTable operator.
4603 length of the input strings SignatureString, OemIdString, and OemTableId
4605 now checked for maximum lengths. (BZ 582) Lin Ming.
4607 Example Code and Data Size: These are the sizes for the OS-independent
4608 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4609 debug version of the code includes the debug output trace mechanism and
4611 a much larger code and data size.
4614 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
4615 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
4617 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
4618 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
4621 2) iASL Compiler/Disassembler:
4623 Fixed a problem where if a single file was specified and the file did not
4624 exist, no error message was emitted. (Introduced with wildcard support in
4627 ----------------------------------------
4628 19 September 2007. Summary of changes for version 20070919:
4630 1) ACPI CA Core Subsystem:
4632 Designed and implemented new external interfaces to install and remove
4633 handlers for ACPI table-related events. Current events that are defined
4635 LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as
4636 they are dynamically loaded and unloaded. See AcpiInstallTableHandler and
4637 AcpiRemoveTableHandler. (Lin Ming and Bob Moore)
4639 Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag
4640 (acpi_serialized option on Linux) could cause some systems to hang during
4641 initialization. (Bob Moore) BZ 8171
4643 Fixed a problem where objects of certain types (Device, ThermalZone,
4644 Processor, PowerResource) can be not found if they are declared and
4645 referenced from within the same control method (Lin Ming) BZ 341
4647 Example Code and Data Size: These are the sizes for the OS-independent
4648 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4649 debug version of the code includes the debug output trace mechanism and
4651 a much larger code and data size.
4654 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
4655 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
4657 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
4658 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
4661 2) iASL Compiler/Disassembler:
4663 Implemented support to allow multiple files to be compiled/disassembled in
4665 single invocation. This includes command line wildcard support for both
4667 Windows and Unix versions of the compiler. This feature simplifies the
4668 disassembly and compilation of multiple ACPI tables in a single directory.
4670 ----------------------------------------
4671 08 May 2007. Summary of changes for version 20070508:
4673 1) ACPI CA Core Subsystem:
4675 Implemented a Microsoft compatibility design change for the handling of
4677 Notify AML operator. Previously, notify handlers were dispatched and
4678 executed completely asynchronously in a deferred thread. The new design
4679 still executes the notify handlers in a different thread, but the original
4680 thread that executed the Notify() now waits at a synchronization point for
4681 the notify handler to complete. Some machines depend on a synchronous
4683 operator in order to operate correctly.
4685 Implemented support to allow Package objects to be passed as method
4686 arguments to the external AcpiEvaluateObject interface. Previously, this
4687 would return the AE_NOT_IMPLEMENTED exception. This feature had not been
4688 implemented since there were no reserved control methods that required it
4691 Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs
4693 contained invalid non-zero values in reserved fields could cause later
4694 failures because these fields have meaning in later revisions of the FADT.
4695 For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The
4697 are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.)
4699 Fixed a problem where the Global Lock handle was not properly updated if a
4700 thread that acquired the Global Lock via executing AML code then attempted
4701 to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by
4705 Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list
4706 could be corrupted if the interrupt being removed was at the head of the
4707 list. Reported by Linn Crosetto.
4709 Example Code and Data Size: These are the sizes for the OS-independent
4710 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4711 debug version of the code includes the debug output trace mechanism and
4713 a much larger code and data size.
4716 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
4717 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
4719 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
4720 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
4722 ----------------------------------------
4723 20 March 2007. Summary of changes for version 20070320:
4725 1) ACPI CA Core Subsystem:
4727 Implemented a change to the order of interpretation and evaluation of AML
4728 operand objects within the AML interpreter. The interpreter now evaluates
4729 operands in the order that they appear in the AML stream (and the
4730 corresponding ASL code), instead of in the reverse order (after the entire
4731 operand list has been parsed). The previous behavior caused several subtle
4732 incompatibilities with the Microsoft AML interpreter as well as being
4733 somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov.
4735 Implemented a change to the ACPI Global Lock support. All interfaces to
4737 global lock now allow the same thread to acquire the lock multiple times.
4738 This affects the AcpiAcquireGlobalLock external interface to the global
4740 as well as the internal use of the global lock to support AML fields -- a
4741 control method that is holding the global lock can now simultaneously
4743 AML fields that require global lock protection. Previously, in both cases,
4744 this would have resulted in an AE_ALREADY_ACQUIRED exception. The change
4746 AcpiAcquireGlobalLock is of special interest to drivers for the Embedded
4747 Controller. There is no change to the behavior of the AML Acquire
4749 as this can already be used to acquire a mutex multiple times by the same
4750 thread. BZ 8066. With assistance from Alexey Starikovskiy.
4752 Fixed a problem where invalid objects could be referenced in the AML
4753 Interpreter after error conditions. During operand evaluation, ensure that
4754 the internal "Return Object" field is cleared on error and only valid
4755 pointers are stored there. Caused occasional access to deleted objects
4757 resulted in "large reference count" warning messages. Valery Podrezov.
4759 Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur
4761 deeply nested control method invocations. BZ 7873, local BZ 487. Valery
4764 Fixed an internal problem with the handling of result objects on the
4765 interpreter result stack. BZ 7872. Valery Podrezov.
4767 Removed obsolete code that handled the case where AML_NAME_OP is the
4769 of a reference (Reference.Opcode). This code was no longer necessary. BZ
4770 7874. Valery Podrezov.
4772 Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This was
4774 remnant from the previously discontinued 16-bit support.
4776 Example Code and Data Size: These are the sizes for the OS-independent
4777 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4778 debug version of the code includes the debug output trace mechanism and
4780 a much larger code and data size.
4783 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
4784 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
4786 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
4787 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
4789 ----------------------------------------
4790 26 January 2007. Summary of changes for version 20070126:
4792 1) ACPI CA Core Subsystem:
4794 Added the 2007 copyright to all module headers and signons. This affects
4795 virtually every file in the ACPICA core subsystem, the iASL compiler, and
4798 Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable
4799 during a table load. A bad pointer was passed in the case where the DSDT
4801 overridden, causing a fault in this case.
4803 Example Code and Data Size: These are the sizes for the OS-independent
4804 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4805 debug version of the code includes the debug output trace mechanism and
4807 a much larger code and data size.
4810 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
4811 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
4813 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
4814 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
4816 ----------------------------------------
4817 15 December 2006. Summary of changes for version 20061215:
4819 1) ACPI CA Core Subsystem:
4821 Support for 16-bit ACPICA has been completely removed since it is no
4823 necessary and it clutters the code. All 16-bit macros, types, and
4824 conditional compiles have been removed, cleaning up and simplifying the
4826 across the entire subsystem. DOS support is no longer needed since the
4827 bootable Linux firmware kit is now available.
4829 The handler for the Global Lock is now removed during AcpiTerminate to
4830 enable a clean subsystem restart, via the implementation of the
4831 AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz,
4834 Implemented enhancements to the multithreading support within the debugger
4835 to enable improved multithreading debugging and evaluation of the
4839 Debugger: Enhanced the Statistics/Memory command to emit the total
4841 memory used during the execution, as well as the maximum memory consumed
4843 each of the various object types. (Valery Podrezov)
4845 Example Code and Data Size: These are the sizes for the OS-independent
4846 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4847 debug version of the code includes the debug output trace mechanism and
4849 a much larger code and data size.
4852 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
4853 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
4855 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
4856 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
4859 2) iASL Compiler/Disassembler and Tools:
4861 AcpiExec: Implemented a new option (-m) to display full memory use
4862 statistics upon subsystem/program termination. (Valery Podrezov)
4864 ----------------------------------------
4865 09 November 2006. Summary of changes for version 20061109:
4867 1) ACPI CA Core Subsystem:
4869 Optimized the Load ASL operator in the case where the source operand is an
4870 operation region. Simply map the operation region memory, instead of
4871 performing a bytewise read. (Region must be of type SystemMemory, see
4874 Fixed the Load ASL operator for the case where the source operand is a
4875 region field. A buffer object is also allowed as the source operand. BZ
4878 Fixed a problem where the Load ASL operator allowed the source operand to
4880 an operation region of any type. It is now restricted to regions of type
4881 SystemMemory, as per the ACPI specification. BZ 481
4883 Additional cleanup and optimizations for the new Table Manager code.
4885 AcpiEnable will now fail if all of the required ACPI tables are not loaded
4886 (FADT, FACS, DSDT). BZ 477
4888 Added #pragma pack(8/4) to acobject.h to ensure that the structures in
4890 header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been
4891 manually optimized to be aligned and will not work if it is byte-packed.
4893 Example Code and Data Size: These are the sizes for the OS-independent
4894 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4895 debug version of the code includes the debug output trace mechanism and
4897 a much larger code and data size.
4900 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
4901 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
4903 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
4904 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
4907 2) iASL Compiler/Disassembler and Tools:
4909 Fixed a problem where the presence of the _OSI predefined control method
4910 within complex expressions could cause an internal compiler error.
4912 AcpiExec: Implemented full region support for multiple address spaces.
4913 SpaceId is now part of the REGION object. BZ 429
4915 ----------------------------------------
4916 11 October 2006. Summary of changes for version 20061011:
4918 1) ACPI CA Core Subsystem:
4920 Completed an AML interpreter performance enhancement for control method
4921 execution. Previously a 2-pass parse/execution, control methods are now
4922 completely parsed and executed in a single pass. This improves overall
4923 interpreter performance by ~25%, reduces code size, and reduces CPU stack
4924 use. (Valery Podrezov + interpreter changes in version 20051202 that
4925 eliminated namespace loading during the pass one parse.)
4927 Implemented _CID support for PCI Root Bridge detection. If the _HID does
4929 match the predefined PCI Root Bridge IDs, the _CID list (if present) is
4931 obtained and also checked for an ID match.
4933 Implemented additional support for the PCI _ADR execution: upsearch until
4935 device scope is found before executing _ADR. This allows PCI_Config
4936 operation regions to be declared locally within control methods underneath
4939 Fixed a problem with a possible race condition between threads executing
4940 AcpiWalkNamespace and the AML interpreter. This condition was removed by
4941 modifying AcpiWalkNamespace to (by default) ignore all temporary namespace
4942 entries created during any concurrent control method execution. An
4943 additional namespace race condition is known to exist between
4944 AcpiWalkNamespace and the Load/Unload ASL operators and is still under
4947 Restructured the AML ParseLoop function, breaking it into several
4948 subfunctions in order to reduce CPU stack use and improve maintainability.
4951 AcpiGetHandle: Fix for parameter validation to detect invalid combinations
4952 of prefix handle and pathname. BZ 478
4954 Example Code and Data Size: These are the sizes for the OS-independent
4955 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4956 debug version of the code includes the debug output trace mechanism and
4958 a much larger code and data size.
4961 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
4962 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
4964 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
4965 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
4967 2) iASL Compiler/Disassembler and Tools:
4969 Ported the -g option (get local ACPI tables) to the new ACPICA Table
4971 to restore original behavior.
4973 ----------------------------------------
4974 27 September 2006. Summary of changes for version 20060927:
4976 1) ACPI CA Core Subsystem:
4978 Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister.
4979 These functions now use a spinlock for mutual exclusion and the interrupt
4980 level indication flag is not needed.
4982 Fixed a problem with the Global Lock where the lock could appear to be
4983 obtained before it is actually obtained. The global lock semaphore was
4984 inadvertently created with one unit instead of zero units. (BZ 464) Fiodor
4987 Fixed a possible memory leak and fault in AcpiExResolveObjectToValue
4989 a read from a buffer or region field. (BZ 458) Fiodor Suietov.
4991 Example Code and Data Size: These are the sizes for the OS-independent
4992 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4993 debug version of the code includes the debug output trace mechanism and
4995 a much larger code and data size.
4998 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
4999 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
5001 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
5002 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
5005 2) iASL Compiler/Disassembler and Tools:
5007 Fixed a compilation problem with the pre-defined Resource Descriptor field
5008 names where an "object does not exist" error could be incorrectly
5010 if the parent ResourceTemplate pathname places the template within a
5011 different namespace scope than the current scope. (BZ 7212)
5013 Fixed a problem where the compiler could hang after syntax errors detected
5014 in an ElseIf construct. (BZ 453)
5016 Fixed a problem with the AmlFilename parameter to the DefinitionBlock()
5017 operator. An incorrect output filename was produced when this parameter
5019 a null string (""). Now, the original input filename is used as the AML
5020 output filename, with an ".aml" extension.
5022 Implemented a generic batch command mode for the AcpiExec utility (execute
5023 any AML debugger command) (Valery Podrezov).
5025 ----------------------------------------
5026 12 September 2006. Summary of changes for version 20060912:
5028 1) ACPI CA Core Subsystem:
5030 Enhanced the implementation of the "serialized mode" of the interpreter
5031 (enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is
5032 specified, instead of creating a serialization semaphore per control
5034 the interpreter lock is simply no longer released before a blocking
5035 operation during control method execution. This effectively makes the AML
5036 Interpreter single-threaded. The overhead of a semaphore per-method is
5039 Fixed a regression where an error was no longer emitted if a control
5041 attempts to create 2 objects of the same name. This once again returns
5042 AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism
5044 will dynamically serialize the control method to possible prevent future
5047 Integrated a fix for a problem with PCI Express HID detection in the PCI
5048 Config Space setup procedure. (BZ 7145)
5050 Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the
5051 AcpiHwInitialize function - the FADT registers are now validated when the
5054 Added two new warnings during FADT verification - 1) if the FADT is larger
5055 than the largest known FADT version, and 2) if there is a mismatch between
5057 32-bit block address and the 64-bit X counterpart (when both are non-
5060 Example Code and Data Size: These are the sizes for the OS-independent
5061 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5062 debug version of the code includes the debug output trace mechanism and
5064 a much larger code and data size.
5067 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
5068 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
5070 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
5071 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
5074 2) iASL Compiler/Disassembler and Tools:
5076 Fixed a problem with the implementation of the Switch() operator where the
5077 temporary variable was declared too close to the actual Switch, instead of
5078 at method level. This could cause a problem if the Switch() operator is
5079 within a while loop, causing an error on the second iteration. (BZ 460)
5081 Disassembler - fix for error emitted for unknown type for target of scope
5082 operator. Now, ignore it and continue.
5084 Disassembly of an FADT now verifies the input FADT and reports any errors
5085 found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs.
5087 Disassembly of raw data buffers with byte initialization data now prefixes
5088 each output line with the current buffer offset.
5090 Disassembly of ASF! table now includes all variable-length data fields at
5091 the end of some of the subtables.
5093 The disassembler now emits a comment if a buffer appears to be a
5094 ResourceTemplate, but cannot be disassembled as such because the EndTag
5096 not appear at the very end of the buffer.
5098 AcpiExec - Added the "-t" command line option to enable the serialized
5100 of the AML interpreter.
5102 ----------------------------------------
5103 31 August 2006. Summary of changes for version 20060831:
5105 1) ACPI CA Core Subsystem:
5107 Miscellaneous fixes for the Table Manager:
5108 - Correctly initialize internal common FADT for all 64-bit "X" fields
5109 - Fixed a couple table mapping issues during table load
5110 - Fixed a couple alignment issues for IA64
5111 - Initialize input array to zero in AcpiInitializeTables
5112 - Additional parameter validation for AcpiGetTable, AcpiGetTableHeader,
5115 Change for GPE support: when a "wake" GPE is received, all wake GPEs are
5117 immediately disabled to prevent the waking GPE from firing again and to
5118 prevent other wake GPEs from interrupting the wake process.
5120 Added the AcpiGpeCount global that tracks the number of processed GPEs, to
5121 be used for debugging systems with a large number of ACPI interrupts.
5123 Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in
5124 both the ACPICA headers and the disassembler.
5126 Example Code and Data Size: These are the sizes for the OS-independent
5127 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5128 debug version of the code includes the debug output trace mechanism and
5130 a much larger code and data size.
5133 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
5134 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
5136 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
5137 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
5140 2) iASL Compiler/Disassembler and Tools:
5142 Disassembler support for the DMAR ACPI table.
5144 ----------------------------------------
5145 23 August 2006. Summary of changes for version 20060823:
5147 1) ACPI CA Core Subsystem:
5149 The Table Manager component has been completely redesigned and
5150 reimplemented. The new design is much simpler, and reduces the overall
5152 and data size of the kernel-resident ACPICA by approximately 5%. Also, it
5154 now possible to obtain the ACPI tables very early during kernel
5155 initialization, even before dynamic memory management is initialized.
5156 (Alexey Starikovskiy, Fiodor Suietov, Bob Moore)
5158 Obsolete ACPICA interfaces:
5160 - AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel
5163 - AcpiLoadTable: Not needed.
5164 - AcpiUnloadTable: Not needed.
5166 New ACPICA interfaces:
5168 - AcpiInitializeTables: Must be called before the table manager can be
5170 - AcpiReallocateRootTable: Used to transfer the root table to dynamically
5171 allocated memory after it becomes available.
5172 - AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI tables
5175 Other ACPICA changes:
5177 - AcpiGetTableHeader returns the actual mapped table header, not a copy.
5179 AcpiOsUnmapMemory to free this mapping.
5180 - AcpiGetTable returns the actual mapped table. The mapping is managed
5181 internally and must not be deleted by the caller. Use of this interface
5182 causes no additional dynamic memory allocation.
5183 - AcpiFindRootPointer: Support for physical addressing has been
5185 it appeared to be unused.
5186 - The interface to AcpiOsMapMemory has changed to be consistent with the
5187 other allocation interfaces.
5188 - The interface to AcpiOsGetRootPointer has changed to eliminate
5191 - ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 64-
5192 bit platforms. Was previously 64 bits on all platforms.
5193 - The interface to the ACPI Global Lock acquire/release macros have
5195 slightly since ACPICA no longer keeps a local copy of the FACS with a
5196 constructed pointer to the actual global lock.
5198 Porting to the new table manager:
5200 - AcpiInitializeTables: Must be called once, and can be called anytime
5201 during the OS initialization process. It allows the host to specify an
5203 of memory to be used to store the internal version of the RSDT/XSDT (root
5204 table). This allows the host to access ACPI tables before memory
5206 is initialized and running.
5207 - AcpiReallocateRootTable: Can be called after memory management is
5209 to copy the root table to a dynamically allocated array, freeing up the
5210 scratch memory specified in the call to AcpiInitializeTables.
5211 - AcpiSubsystemInitialize: This existing interface is independent of the
5212 Table Manager, and does not have to be called before the Table Manager can
5213 be used, it only must be called before the rest of ACPICA can be used.
5214 - ACPI Tables: Some changes have been made to the names and structure of
5216 actbl.h and actbl1.h header files and may require changes to existing
5218 For example, bitfields have been completely removed because of their lack
5220 portability across C compilers.
5221 - Update interfaces to the Global Lock acquire/release macros if local
5222 versions are used. (see acwin.h)
5224 Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c
5228 Example Code and Data Size: These are the sizes for the OS-independent
5229 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5230 debug version of the code includes the debug output trace mechanism and
5232 a much larger code and data size.
5235 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
5236 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
5238 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
5239 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
5242 2) iASL Compiler/Disassembler and Tools:
5244 No changes for this release.
5246 ----------------------------------------
5247 21 July 2006. Summary of changes for version 20060721:
5249 1) ACPI CA Core Subsystem:
5251 The full source code for the ASL test suite used to validate the iASL
5252 compiler and the ACPICA core subsystem is being released with the ACPICA
5253 source for the first time. The source is contained in a separate package
5255 consists of over 1100 files that exercise all ASL/AML operators. The
5257 should appear on the Intel/ACPI web site shortly. (Valery Podrezov, Fiodor
5260 Completed a new design and implementation for support of the ACPI Global
5261 Lock. On the OS side, the global lock is now treated as a standard AML
5262 mutex. Previously, multiple OS threads could "acquire" the global lock
5263 simultaneously. However, this could cause the BIOS to be starved out of
5265 lock - especially in cases such as the Embedded Controller driver where
5266 there is a tight coupling between the OS and the BIOS.
5268 Implemented an optimization for the ACPI Global Lock interrupt mechanism.
5269 The Global Lock interrupt handler no longer queues the execution of a
5270 separate thread to signal the global lock semaphore. Instead, the
5272 is signaled directly from the interrupt handler.
5274 Implemented support within the AML interpreter for package objects that
5275 contain a larger AML length (package list length) than the package element
5276 count. In this case, the length of the package is truncated to match the
5277 package element count. Some BIOS code apparently modifies the package
5279 on the fly, and this change supports this behavior. Provides compatibility
5280 with the MS AML interpreter. (With assistance from Fiodor Suietov)
5282 Implemented a temporary fix for the BankValue parameter of a Bank Field to
5283 support all constant values, now including the Zero and One opcodes.
5284 Evaluation of this parameter must eventually be converted to a full
5286 evaluation. A not-implemented error is now returned (temporarily) for non-
5287 constant values for this parameter.
5289 Fixed problem reports (Fiodor Suietov) integrated:
5290 - Fix for premature object deletion after CopyObject on Operation Region
5294 Example Code and Data Size: These are the sizes for the OS-independent
5295 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5296 debug version of the code includes the debug output trace mechanism and
5298 a much larger code and data size.
5301 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total
5302 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total
5304 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
5305 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
5308 2) iASL Compiler/Disassembler and Tools:
5310 No changes for this release.
5312 ----------------------------------------
5313 07 July 2006. Summary of changes for version 20060707:
5315 1) ACPI CA Core Subsystem:
5317 Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers
5318 that do not allow the initialization of address pointers within packed
5319 structures - even though the hardware itself may support misaligned
5320 transfers. Some of the debug data structures are packed by default to
5323 Added an error message for the case where AcpiOsGetThreadId() returns
5325 A non-zero value is required by the core ACPICA code to ensure the proper
5326 operation of AML mutexes and recursive control methods.
5328 The DSDT is now the only ACPI table that determines whether the AML
5329 interpreter is in 32-bit or 64-bit mode. Not really a functional change,
5331 the hooks for per-table 32/64 switching have been removed from the code. A
5332 clarification to the ACPI specification is forthcoming in ACPI 3.0B.
5334 Fixed a possible leak of an OwnerID in the error path of
5335 AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID
5336 deletion to a single place in AcpiTbUninstallTable to correct possible
5338 when using the AcpiTbDeleteTablesByType interface (with assistance from
5341 Fixed a problem with Serialized control methods where the semaphore
5342 associated with the method could be over-signaled after multiple method
5345 Fixed two issues with the locking of the internal namespace data
5347 Both the Unload() operator and AcpiUnloadTable interface now lock the
5348 namespace during the namespace deletion associated with the table unload
5349 (with assistance from Linn Crosetto.)
5351 Fixed problem reports (Valery Podrezov) integrated:
5352 - Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426)
5354 Fixed problem reports (Fiodor Suietov) integrated:
5355 - Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369)
5356 - On Address Space handler deletion, needless deactivation call (BZ 374)
5357 - AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 375)
5358 - Possible memory leak, Notify sub-objects of Processor, Power,
5361 - AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378)
5362 - Minimum Length of RSDT should be validated (BZ 379)
5363 - AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no
5365 - AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type
5369 Example Code and Data Size: These are the sizes for the OS-independent
5370 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5371 debug version of the code includes the debug output trace mechanism and
5373 a much larger code and data size.
5376 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
5377 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
5379 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
5380 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
5383 2) iASL Compiler/Disassembler and Tools:
5385 Fixed problem reports:
5386 Compiler segfault when ASL contains a long (>1024) String declaration (BZ
5389 ----------------------------------------
5390 23 June 2006. Summary of changes for version 20060623:
5392 1) ACPI CA Core Subsystem:
5394 Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This
5395 allows the type to be customized to the host OS for improved efficiency
5396 (since a spinlock is usually a very small object.)
5398 Implemented support for "ignored" bits in the ACPI registers. According to
5399 the ACPI specification, these bits should be preserved when writing the
5400 registers via a read/modify/write cycle. There are 3 bits preserved in
5402 manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11].
5404 Implemented the initial deployment of new OSL mutex interfaces. Since some
5405 host operating systems have separate mutex and semaphore objects, this
5406 feature was requested. The base code now uses mutexes (and the new mutex
5407 interfaces) wherever a binary semaphore was used previously. However, for
5408 the current release, the mutex interfaces are defined as macros to map
5410 to the existing semaphore interfaces. Therefore, no OSL changes are
5412 at this time. (See acpiosxf.h)
5414 Fixed several problems with the support for the control method SyncLevel
5415 parameter. The SyncLevel now works according to the ACPI specification and
5416 in concert with the Mutex SyncLevel parameter, since the current SyncLevel
5417 is a property of the executing thread. Mutual exclusion for control
5419 is now implemented with a mutex instead of a semaphore.
5421 Fixed three instances of the use of the C shift operator in the bitfield
5422 support code (exfldio.c) to avoid the use of a shift value larger than the
5423 target data width. The behavior of C compilers is undefined in this case
5425 can cause unpredictable results, and therefore the case must be detected
5427 avoided. (Fiodor Suietov)
5429 Added an info message whenever an SSDT or OEM table is loaded dynamically
5430 via the Load() or LoadTable() ASL operators. This should improve debugging
5431 capability since it will show exactly what tables have been loaded (beyond
5432 the tables present in the RSDT/XSDT.)
5434 Example Code and Data Size: These are the sizes for the OS-independent
5435 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5436 debug version of the code includes the debug output trace mechanism and
5438 a much larger code and data size.
5441 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
5442 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
5444 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
5445 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
5448 2) iASL Compiler/Disassembler and Tools:
5450 No changes for this release.
5452 ----------------------------------------
5453 08 June 2006. Summary of changes for version 20060608:
5455 1) ACPI CA Core Subsystem:
5457 Converted the locking mutex used for the ACPI hardware to a spinlock. This
5458 change should eliminate all problems caused by attempting to acquire a
5459 semaphore at interrupt level, and it means that all ACPICA external
5460 interfaces that directly access the ACPI hardware can be safely called
5462 interrupt level. OSL code that implements the semaphore interfaces should
5464 able to eliminate any workarounds for being called at interrupt level.
5466 Fixed a regression introduced in 20060526 where the ACPI device
5467 initialization could be prematurely aborted with an AE_NOT_FOUND if a
5469 did not have an optional _INI method.
5471 Fixed an IndexField issue where a write to the Data Register should be
5472 limited in size to the AccessSize (width) of the IndexField itself. (BZ
5476 Fixed problem reports (Valery Podrezov) integrated:
5477 - Allow store of ThermalZone objects to Debug object (BZ 5369/5370)
5479 Fixed problem reports (Fiodor Suietov) integrated:
5480 - AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364)
5482 Removed four global mutexes that were obsolete and were no longer being
5485 Example Code and Data Size: These are the sizes for the OS-independent
5486 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5487 debug version of the code includes the debug output trace mechanism and
5489 a much larger code and data size.
5492 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
5493 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
5495 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
5496 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
5499 2) iASL Compiler/Disassembler and Tools:
5501 Fixed a fault when using -g option (get tables from registry) on Windows
5504 Fixed problem reports integrated:
5505 - Generate error if CreateField NumBits parameter is zero. (BZ 405)
5506 - Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor
5508 - Global table revision override (-r) is ignored (BZ 413)
5510 ----------------------------------------
5511 26 May 2006. Summary of changes for version 20060526:
5513 1) ACPI CA Core Subsystem:
5515 Restructured, flattened, and simplified the internal interfaces for
5516 namespace object evaluation - resulting in smaller code, less CPU stack
5518 and fewer interfaces. (With assistance from Mikhail Kouzmich)
5520 Fixed a problem with the CopyObject operator where the first parameter was
5521 not typed correctly for the parser, interpreter, compiler, and
5523 Caused various errors and unexpected behavior.
5525 Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits
5526 produced incorrect results with some C compilers. Since the behavior of C
5527 compilers when the shift value is larger than the datatype width is
5528 apparently not well defined, the interpreter now detects this condition
5530 simply returns zero as expected in all such cases. (BZ 395)
5532 Fixed problem reports (Valery Podrezov) integrated:
5533 - Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329)
5534 - Allow interpreter to handle nested method declarations (BZ 5361)
5536 Fixed problem reports (Fiodor Suietov) integrated:
5537 - AcpiTerminate doesn't free debug memory allocation list objects (BZ 355)
5538 - After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ
5540 - AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357)
5541 - Resource Manager should return AE_TYPE for non-device objects (BZ 358)
5542 - Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359)
5543 - Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360)
5544 - Incomplete cleanup branch in AcpiPsParseAml (BZ 361)
5545 - Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362)
5546 - AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ
5548 - Status of the Global Initialization Handler call not used (BZ 366)
5549 - Incorrect object parameter to Global Initialization Handler (BZ 367)
5551 Example Code and Data Size: These are the sizes for the OS-independent
5552 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5553 debug version of the code includes the debug output trace mechanism and
5555 a much larger code and data size.
5558 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
5559 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
5561 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
5562 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
5565 2) iASL Compiler/Disassembler and Tools:
5567 Modified the parser to allow the names IO, DMA, and IRQ to be used as
5568 namespace identifiers with no collision with existing resource descriptor
5569 macro names. This provides compatibility with other ASL compilers and is
5570 most useful for disassembly/recompilation of existing tables without parse
5571 errors. (With assistance from Thomas Renninger)
5573 Disassembler: fixed an incorrect disassembly problem with the
5574 DataTableRegion and CopyObject operators. Fixed a possible fault during
5575 disassembly of some Alias operators.
5577 ----------------------------------------
5578 12 May 2006. Summary of changes for version 20060512:
5580 1) ACPI CA Core Subsystem:
5582 Replaced the AcpiOsQueueForExecution interface with a new interface named
5583 AcpiOsExecute. The major difference is that the new interface does not
5585 a Priority parameter, this appeared to be useless and has been replaced by
5587 Type parameter. The Type tells the host what type of execution is being
5588 requested, such as global lock handler, notify handler, GPE handler, etc.
5589 This allows the host to queue and execute the request as appropriate for
5591 request type, possibly using different work queues and different
5593 for the various request types. This enables fixes for multithreading
5594 deadlock problems such as BZ #5534, and will require changes to all
5596 OS interface layers. (Alexey Starikovskiy and Bob Moore)
5598 Fixed a possible memory leak associated with the support for the so-called
5599 "implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor
5602 Fixed a problem with the Load() operator where a table load from an
5603 operation region could overwrite an internal table buffer by up to 7 bytes
5604 and cause alignment faults on IPF systems. (With assistance from Luming
5607 Example Code and Data Size: These are the sizes for the OS-independent
5608 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5609 debug version of the code includes the debug output trace mechanism and
5611 a much larger code and data size.
5614 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
5615 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
5617 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
5618 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
5622 2) iASL Compiler/Disassembler and Tools:
5624 Disassembler: Implemented support to cross reference the internal
5626 and automatically generate ASL External() statements for symbols not
5628 within the current table being disassembled. This will simplify the
5629 disassembly and recompilation of interdependent tables such as SSDTs since
5630 these statements will no longer have to be added manually.
5632 Disassembler: Implemented experimental support to automatically detect
5633 invocations of external control methods and generate appropriate
5635 statements. This is problematic because the AML cannot be correctly parsed
5636 until the number of arguments for each control method is known. Currently,
5637 standalone method invocations and invocations as the source operand of a
5638 Store() statement are supported.
5640 Disassembler: Implemented support for the ASL pseudo-operators LNotEqual,
5641 LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()),
5642 LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code
5643 more readable and likely closer to the original ASL source.
5645 ----------------------------------------
5646 21 April 2006. Summary of changes for version 20060421:
5648 1) ACPI CA Core Subsystem:
5650 Removed a device initialization optimization introduced in 20051216 where
5651 the _STA method was not run unless an _INI was also present for the same
5652 device. This optimization could cause problems because it could allow _INI
5653 methods to be run within a not-present device subtree. (If a not-present
5654 device had no _INI, _STA would not be run, the not-present status would
5656 be discovered, and the children of the device would be incorrectly
5659 Implemented a new _STA optimization where namespace subtrees that do not
5660 contain _INI are identified and ignored during device initialization.
5661 Selectively running _STA can significantly improve boot time on large
5662 machines (with assistance from Len Brown.)
5664 Implemented support for the device initialization case where the returned
5665 _STA flags indicate a device not-present but functioning. In this case,
5667 is not run, but the device children are examined for presence, as per the
5670 Implemented an additional change to the IndexField support in order to
5671 conform to MS behavior. The value written to the Index Register is not
5672 simply a byte offset, it is a byte offset in units of the access width of
5673 the parent Index Field. (Fiodor Suietov)
5675 Defined and deployed a new OSL interface, AcpiOsValidateAddress. This
5676 interface is called during the creation of all AML operation regions, and
5677 allows the host OS to exert control over what addresses it will allow the
5678 AML code to access. Operation Regions whose addresses are disallowed will
5679 cause a runtime exception when they are actually accessed (will not affect
5680 or abort table loading.) See oswinxf or osunixxf for an example
5683 Defined and deployed a new OSL interface, AcpiOsValidateInterface. This
5684 interface allows the host OS to match the various "optional"
5685 interface/behavior strings for the _OSI predefined control method as
5686 appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf
5687 for an example implementation.
5689 Restructured and corrected various problems in the exception handling code
5690 paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod
5691 (with assistance from Takayoshi Kochi.)
5693 Modified the Linux source converter to ignore quoted string literals while
5694 converting identifiers from mixed to lower case. This will correct
5696 with the disassembler and other areas where such strings must not be
5699 The ACPI_FUNCTION_* macros no longer require quotes around the function
5700 name. This allows the Linux source converter to convert the names, now
5702 the converter ignores quoted strings.
5704 Example Code and Data Size: These are the sizes for the OS-independent
5705 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5706 debug version of the code includes the debug output trace mechanism and
5708 a much larger code and data size.
5712 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
5713 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
5715 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
5716 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
5719 2) iASL Compiler/Disassembler and Tools:
5721 Implemented 3 new warnings for iASL, and implemented multiple warning
5725 1) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is
5727 WAIT_FOREVER (0xFFFF) and the code does not examine the return value to
5728 check for the possible timeout, a warning is issued.
5730 2) Useless operators: If an ASL operator does not specify an optional
5732 operand and it also does not use the function return value from the
5733 operator, a warning is issued since the operator effectively does nothing.
5735 3) Unreferenced objects: If a namespace object is created, but never
5736 referenced, a warning is issued. This is a warning level 2 since there are
5737 cases where this is ok, such as when a secondary table is loaded that uses
5738 the unreferenced objects. Even so, care is taken to only flag objects that
5739 don't look like they will ever be used. For example, the reserved methods
5740 (starting with an underscore) are usually not referenced because it is
5741 expected that the OS will invoke them.
5743 ----------------------------------------
5744 31 March 2006. Summary of changes for version 20060331:
5746 1) ACPI CA Core Subsystem:
5748 Implemented header file support for the following additional ACPI tables:
5749 ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this
5751 all current and known ACPI tables are now defined in the ACPICA headers
5753 are available for use by device drivers and other software.
5755 Implemented support to allow tables that contain ACPI names with invalid
5756 characters to be loaded. Previously, this would cause the table load to
5757 fail, but since there are several known cases of such tables on existing
5758 machines, this change was made to enable ACPI support for them. Also, this
5759 matches the behavior of the Microsoft ACPI implementation.
5761 Fixed a couple regressions introduced during the memory optimization in
5763 20060317 release. The namespace node definition required additional
5764 reorganization and an internal datatype that had been changed to 8-bit was
5765 restored to 32-bit. (Valery Podrezov)
5767 Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState
5768 could be passed through to AcpiOsReleaseObject which is unexpected. Such
5769 null pointers are now trapped and ignored, matching the behavior of the
5770 previous implementation before the deployment of AcpiOsReleaseObject.
5771 (Valery Podrezov, Fiodor Suietov)
5773 Fixed a memory mapping leak during the deletion of a SystemMemory
5775 region where a cached memory mapping was not deleted. This became a
5776 noticeable problem for operation regions that are defined within
5778 used control methods. (Dana Meyers)
5780 Reorganized the ACPI table header files into two main files: one for the
5781 ACPI tables consumed by the ACPICA core, and another for the miscellaneous
5782 ACPI tables that are consumed by the drivers and other software. The
5784 FADT definitions were merged into one common section and three different
5785 tables (ACPI 1.0, 1.0+, and 2.0)
5787 Example Code and Data Size: These are the sizes for the OS-independent
5788 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5789 debug version of the code includes the debug output trace mechanism and
5791 a much larger code and data size.
5794 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
5795 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
5797 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
5798 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
5801 2) iASL Compiler/Disassembler and Tools:
5803 Disassembler: Implemented support to decode and format all non-AML ACPI
5804 tables (tables other than DSDTs and SSDTs.) This includes the new tables
5805 added to the ACPICA headers, therefore all current and known ACPI tables
5809 Disassembler: The change to allow ACPI names with invalid characters also
5810 enables the disassembly of such tables. Invalid characters within names
5812 changed to '*' to make the name printable; the iASL compiler will still
5813 generate an error for such names, however, since this is an invalid ACPI
5816 Implemented an option for AcpiXtract (-a) to extract all tables found in
5818 input file. The default invocation extracts only the DSDTs and SSDTs.
5820 Fixed a couple of gcc generation issues for iASL and AcpiExec and added a
5821 makefile for the AcpiXtract utility.
5823 ----------------------------------------
5824 17 March 2006. Summary of changes for version 20060317:
5826 1) ACPI CA Core Subsystem:
5828 Implemented the use of a cache object for all internal namespace nodes.
5829 Since there are about 1000 static nodes in a typical system, this will
5830 decrease memory use for cache implementations that minimize per-allocation
5831 overhead (such as a slab allocator.)
5833 Removed the reference count mechanism for internal namespace nodes, since
5835 was deemed unnecessary. This reduces the size of each namespace node by
5836 about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit case,
5837 and 32 bytes for the 64-bit case.
5839 Optimized several internal data structures to reduce object size on 64-bit
5840 platforms by packing data within the 64-bit alignment. This includes the
5841 frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static
5842 instances corresponding to the namespace objects.
5844 Added two new strings for the predefined _OSI method: "Windows 2001.1 SP1"
5847 Split the allocation tracking mechanism out to a separate file, from
5848 utalloc.c to uttrack.c. This mechanism appears to be only useful for
5849 application-level code. Kernels may wish to not include uttrack.c in
5852 Removed all remnants of the obsolete ACPI_REPORT_* macros and the
5854 code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING
5857 Code and Data Size: These are the sizes for the acpica.lib produced by the
5858 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
5860 driver or OSPM code. The debug version of the code includes the debug
5862 trace mechanism and has a much larger code and data size. Note that these
5863 values will vary depending on the efficiency of the compiler and the
5864 compiler options used during generation.
5867 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
5868 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
5870 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
5871 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
5874 2) iASL Compiler/Disassembler and Tools:
5876 Implemented an ANSI C version of the acpixtract utility. This version will
5877 automatically extract the DSDT and all SSDTs from the input acpidump text
5878 file and dump the binary output to separate files. It can also display a
5879 summary of the input file including the headers for each table found and
5880 will extract any single ACPI table, with any signature. (See
5881 source/tools/acpixtract)
5883 ----------------------------------------
5884 10 March 2006. Summary of changes for version 20060310:
5886 1) ACPI CA Core Subsystem:
5888 Tagged all external interfaces to the subsystem with the new
5889 ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to assist
5890 kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL
5891 macro. The default definition is NULL.
5893 Added the ACPI_THREAD_ID type for the return value from AcpiOsGetThreadId.
5894 This allows the host to define this as necessary to simplify kernel
5895 integration. The default definition is ACPI_NATIVE_UINT.
5897 Fixed two interpreter problems related to error processing, the deletion
5899 objects, and placing invalid pointers onto the internal operator result
5900 stack. BZ 6028, 6151 (Valery Podrezov)
5902 Increased the reference count threshold where a warning is emitted for
5904 reference counts in order to eliminate unnecessary warnings on systems
5906 large namespaces (especially 64-bit.) Increased the value from 0x400 to
5909 Due to universal disagreement as to the meaning of the 'c' in the calloc()
5910 function, the ACPI_MEM_CALLOCATE macro has been renamed to
5911 ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'.
5912 ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and
5915 Code and Data Size: These are the sizes for the acpica.lib produced by the
5916 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
5918 driver or OSPM code. The debug version of the code includes the debug
5920 trace mechanism and has a much larger code and data size. Note that these
5921 values will vary depending on the efficiency of the compiler and the
5922 compiler options used during generation.
5925 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
5926 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
5928 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
5929 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
5932 2) iASL Compiler/Disassembler:
5934 Disassembler: implemented support for symbolic resource descriptor
5935 references. If a CreateXxxxField operator references a fixed offset within
5937 resource descriptor, a name is assigned to the descriptor and the offset
5939 translated to the appropriate resource tag and pathname. The addition of
5940 this support brings the disassembled code very close to the original ASL
5941 source code and helps eliminate run-time errors when the disassembled code
5942 is modified (and recompiled) in such a way as to invalidate the original
5945 Implemented support for a Descriptor Name as the last parameter to the ASL
5946 Register() macro. This parameter was inadvertently left out of the ACPI
5947 specification, and will be added for ACPI 3.0b.
5949 Fixed a problem where the use of the "_OSI" string (versus the full path
5950 "\_OSI") caused an internal compiler error. ("No back ptr to op")
5952 Fixed a problem with the error message that occurs when an invalid string
5954 used for a _HID object (such as one with an embedded asterisk:
5956 The correct message is now displayed.
5958 ----------------------------------------
5959 17 February 2006. Summary of changes for version 20060217:
5961 1) ACPI CA Core Subsystem:
5963 Implemented a change to the IndexField support to match the behavior of
5965 Microsoft AML interpreter. The value written to the Index register is now
5967 byte offset, no longer an index based upon the width of the Data register.
5968 This should fix IndexField problems seen on some machines where the Data
5969 register is not exactly one byte wide. The ACPI specification will be
5970 clarified on this point.
5972 Fixed a problem where several resource descriptor types could overrun the
5973 internal descriptor buffer due to size miscalculation: VendorShort,
5974 VendorLong, and Interrupt. This was noticed on IA64 machines, but could
5975 affect all platforms.
5977 Fixed a problem where individual resource descriptors were misaligned
5979 the internal buffer, causing alignment faults on IA64 platforms.
5981 Code and Data Size: These are the sizes for the acpica.lib produced by the
5982 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
5984 driver or OSPM code. The debug version of the code includes the debug
5986 trace mechanism and has a much larger code and data size. Note that these
5987 values will vary depending on the efficiency of the compiler and the
5988 compiler options used during generation.
5991 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
5992 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
5994 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
5995 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
5998 2) iASL Compiler/Disassembler:
6000 Implemented support for new reserved names: _WDG and _WED are Microsoft
6001 extensions for Windows Instrumentation Management, _TDL is a new ACPI-
6002 defined method (Throttling Depth Limit.)
6004 Fixed a problem where a zero-length VendorShort or VendorLong resource
6005 descriptor was incorrectly emitted as a descriptor of length one.
6007 ----------------------------------------
6008 10 February 2006. Summary of changes for version 20060210:
6010 1) ACPI CA Core Subsystem:
6012 Removed a couple of extraneous ACPI_ERROR messages that appeared during
6013 normal execution. These became apparent after the conversion from
6016 Fixed a problem where the CreateField operator could hang if the BitIndex
6018 NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359)
6020 Fixed a problem where a DeRefOf operation on a buffer object incorrectly
6021 failed with an exception. This also fixes a couple of related RefOf and
6022 DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387)
6024 Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead
6026 AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov,
6030 Implemented a memory cleanup at the end of the execution of each iteration
6031 of an AML While() loop, preventing the accumulation of outstanding
6033 (Valery Podrezov, BZ 5427)
6035 Eliminated a chunk of duplicate code in the object resolution code.
6039 Fixed several warnings during the 64-bit code generation.
6041 The AcpiSrc source code conversion tool now inserts one line of whitespace
6042 after an if() statement that is followed immediately by a comment,
6044 readability of the Linux code.
6046 Code and Data Size: The current and previous library sizes for the core
6047 subsystem are shown below. These are the code and data sizes for the
6048 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
6049 values do not include any ACPI driver or OSPM code. The debug version of
6051 code includes the debug output trace mechanism and has a much larger code
6052 and data size. Note that these values will vary depending on the
6054 of the compiler and the compiler options used during generation.
6057 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
6058 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
6060 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
6061 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
6064 2) iASL Compiler/Disassembler:
6066 Fixed a problem with the disassembly of a BankField operator with a
6068 expression for the BankValue parameter.
6070 ----------------------------------------
6071 27 January 2006. Summary of changes for version 20060127:
6073 1) ACPI CA Core Subsystem:
6075 Implemented support in the Resource Manager to allow unresolved namestring
6076 references within resource package objects for the _PRT method. This
6078 is in addition to the previously implemented unresolved reference support
6079 within the AML parser. If the interpreter slack mode is enabled, these
6080 unresolved references will be passed through to the caller as a NULL
6084 Implemented and deployed new macros and functions for error and warning
6085 messages across the subsystem. These macros are simpler and generate less
6086 code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION,
6087 ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older
6088 macros remain defined to allow ACPI drivers time to migrate to the new
6091 Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of the
6092 Acquire/Release Lock OSL interfaces.
6094 Fixed a problem where Alias ASL operators are sometimes not correctly
6095 resolved, in both the interpreter and the iASL compiler.
6097 Fixed several problems with the implementation of the
6098 ConcatenateResTemplate
6099 ASL operator. As per the ACPI specification, zero length buffers are now
6100 treated as a single EndTag. One-length buffers always cause a fatal
6101 exception. Non-zero length buffers that do not end with a full 2-byte
6103 cause a fatal exception.
6105 Fixed a possible structure overwrite in the AcpiGetObjectInfo external
6106 interface. (With assistance from Thomas Renninger)
6108 Code and Data Size: The current and previous library sizes for the core
6109 subsystem are shown below. These are the code and data sizes for the
6110 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
6111 values do not include any ACPI driver or OSPM code. The debug version of
6113 code includes the debug output trace mechanism and has a much larger code
6114 and data size. Note that these values will vary depending on the
6116 of the compiler and the compiler options used during generation.
6119 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
6120 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
6122 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
6123 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
6126 2) iASL Compiler/Disassembler:
6128 Fixed an internal error that was generated for any forward references to
6132 ----------------------------------------
6133 13 January 2006. Summary of changes for version 20060113:
6135 1) ACPI CA Core Subsystem:
6137 Added 2006 copyright to all module headers and signons. This affects
6138 virtually every file in the ACPICA core subsystem, iASL compiler, and the
6141 Enhanced the ACPICA error reporting in order to simplify user migration to
6142 the non-debug version of ACPICA. Replaced all instances of the
6143 ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN debug
6144 levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros,
6145 respectively. This preserves all error and warning messages in the non-
6147 version of the ACPICA code (this has been referred to as the "debug lite"
6148 option.) Over 200 cases were converted to create a total of over 380
6149 error/warning messages across the ACPICA code. This increases the code and
6150 data size of the default non-debug version of the code somewhat (about
6152 but all error/warning reporting may be disabled if desired (and code
6153 eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time
6154 configuration option. The size of the debug version of ACPICA remains
6158 Fixed a memory leak within the AML Debugger "Set" command. One object was
6159 not properly deleted for every successful invocation of the command.
6161 Code and Data Size: The current and previous library sizes for the core
6162 subsystem are shown below. These are the code and data sizes for the
6163 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
6164 values do not include any ACPI driver or OSPM code. The debug version of
6166 code includes the debug output trace mechanism and has a much larger code
6167 and data size. Note that these values will vary depending on the
6169 of the compiler and the compiler options used during generation.
6172 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
6173 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
6175 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
6176 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
6179 2) iASL Compiler/Disassembler:
6181 The compiler now officially supports the ACPI 3.0a specification that was
6182 released on December 30, 2005. (Specification is available at
6185 ----------------------------------------
6186 16 December 2005. Summary of changes for version 20051216:
6188 1) ACPI CA Core Subsystem:
6190 Implemented optional support to allow unresolved names within ASL Package
6191 objects. A null object is inserted in the package when a named reference
6192 cannot be located in the current namespace. Enabled via the interpreter
6193 slack flag, this should eliminate AE_NOT_FOUND exceptions seen on machines
6194 that contain such code.
6196 Implemented an optimization to the initialization sequence that can
6198 boot time. During ACPI device initialization, the _STA method is now run
6200 and only if the _INI method exists. The _STA method is used to determine
6202 the device is present; An _INI can only be run if _STA returns present,
6204 it is a waste of time to run the _STA method if the _INI does not exist.
6205 (Prototype and assistance from Dong Wei)
6207 Implemented use of the C99 uintptr_t for the pointer casting macros if it
6209 available in the current compiler. Otherwise, the default (void *) cast is
6212 Fixed some possible memory leaks found within the execution path of the
6213 Break, Continue, If, and CreateField operators. (Valery Podrezov)
6215 Fixed a problem introduced in the 20051202 release where an exception is
6216 generated during method execution if a control method attempts to declare
6219 Moved resource descriptor string constants that are used by both the AML
6220 disassembler and AML debugger to the common utilities directory so that
6221 these components are independent.
6223 Implemented support in the AcpiExec utility (-e switch) to globally ignore
6224 exceptions during control method execution (method is not aborted.)
6226 Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix
6229 Code and Data Size: The current and previous library sizes for the core
6230 subsystem are shown below. These are the code and data sizes for the
6231 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
6232 values do not include any ACPI driver or OSPM code. The debug version of
6234 code includes the debug output trace mechanism and has a much larger code
6235 and data size. Note that these values will vary depending on the
6237 of the compiler and the compiler options used during generation.
6240 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
6241 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
6243 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
6244 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
6247 2) iASL Compiler/Disassembler:
6249 Fixed a problem where a CPU stack overflow fault could occur if a
6251 method call was made from within a Return statement.
6253 ----------------------------------------
6254 02 December 2005. Summary of changes for version 20051202:
6256 1) ACPI CA Core Subsystem:
6258 Modified the parsing of control methods to no longer create namespace
6259 objects during the first pass of the parse. Objects are now created only
6260 during the execute phase, at the moment the namespace creation operator is
6261 encountered in the AML (Name, OperationRegion, CreateByteField, etc.) This
6262 should eliminate ALREADY_EXISTS exceptions seen on some machines where
6263 reentrant control methods are protected by an AML mutex. The mutex will
6265 correctly block multiple threads from attempting to create the same object
6268 Increased the number of available Owner Ids for namespace object tracking
6269 from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen
6271 some machines with a large number of ACPI tables (either static or
6274 Fixed a problem with the AcpiExec utility where a fault could occur when
6276 -b switch (batch mode) is used.
6278 Enhanced the namespace dump routine to output the owner ID for each
6281 Code and Data Size: The current and previous library sizes for the core
6282 subsystem are shown below. These are the code and data sizes for the
6283 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
6284 values do not include any ACPI driver or OSPM code. The debug version of
6286 code includes the debug output trace mechanism and has a much larger code
6287 and data size. Note that these values will vary depending on the
6289 of the compiler and the compiler options used during generation.
6292 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
6293 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
6295 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
6296 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
6299 2) iASL Compiler/Disassembler:
6301 Fixed a parse error during compilation of certain Switch/Case constructs.
6303 simplify the parse, the grammar now allows for multiple Default statements
6304 and this error is now detected and flagged during the analysis phase.
6306 Disassembler: The disassembly now includes the contents of the original
6307 table header within a comment at the start of the file. This includes the
6308 name and version of the original ASL compiler.
6310 ----------------------------------------
6311 17 November 2005. Summary of changes for version 20051117:
6313 1) ACPI CA Core Subsystem:
6315 Fixed a problem in the AML parser where the method thread count could be
6316 decremented below zero if any errors occurred during the method parse
6318 This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some
6320 This also fixed a related regression with the mechanism that detects and
6321 corrects methods that cannot properly handle reentrancy (related to the
6322 deployment of the new OwnerId mechanism.)
6324 Eliminated the pre-parsing of control methods (to detect errors) during
6325 table load. Related to the problem above, this was causing unwind issues
6327 any errors occurred during the parse, and it seemed to be overkill. A
6329 load should not be aborted if there are problems with any single control
6330 method, thus rendering this feature rather pointless.
6332 Fixed a problem with the new table-driven resource manager where an
6334 buffer overflow could occur for small resource templates.
6336 Implemented a new external interface, AcpiGetVendorResource. This
6338 will find and return a vendor-defined resource descriptor within a _CRS or
6339 _PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn
6342 Removed the length limit (200) on string objects as per the upcoming ACPI
6343 3.0A specification. This affects the following areas of the interpreter:
6345 any implicit conversion of a Buffer to a String, 2) a String object result
6346 of the ASL Concatentate operator, 3) the String object result of the ASL
6349 Fixed a problem in the Windows OS interface layer (OSL) where a
6351 on a semaphore object would incorrectly timeout. This allows the
6352 multithreading features of the AcpiExec utility to work properly under
6355 Updated the Linux makefiles for the iASL compiler and AcpiExec to include
6356 the recently added file named "utresrc.c".
6358 Code and Data Size: The current and previous library sizes for the core
6359 subsystem are shown below. These are the code and data sizes for the
6360 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
6361 values do not include any ACPI driver or OSPM code. The debug version of
6363 code includes the debug output trace mechanism and has a much larger code
6364 and data size. Note that these values will vary depending on the
6366 of the compiler and the compiler options used during generation.
6369 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
6370 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
6372 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
6373 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
6376 2) iASL Compiler/Disassembler:
6378 Removed the limit (200) on string objects as per the upcoming ACPI 3.0A
6379 specification. For the iASL compiler, this means that string literals
6381 the source ASL can be of any length.
6383 Enhanced the listing output to dump the AML code for resource descriptors
6384 immediately after the ASL code for each descriptor, instead of in a block
6386 the end of the entire resource template.
6388 Enhanced the compiler debug output to dump the entire original parse tree
6389 constructed during the parse phase, before any transforms are applied to
6391 tree. The transformed tree is dumped also.
6393 ----------------------------------------
6394 02 November 2005. Summary of changes for version 20051102:
6396 1) ACPI CA Core Subsystem:
6398 Modified the subsystem initialization sequence to improve GPE support. The
6399 GPE initialization has been split into two parts in order to defer
6401 of the _PRW methods (Power Resources for Wake) until after the hardware is
6402 fully initialized and the SCI handler is installed. This allows the _PRW
6403 methods to access fields protected by the Global Lock. This will fix
6405 where a NO_GLOBAL_LOCK exception has been seen during initialization.
6407 Converted the ACPI internal object disassemble and display code within the
6408 AML debugger to fully table-driven operation, reducing code size and
6409 increasing maintainability.
6411 Fixed a regression with the ConcatenateResTemplate() ASL operator
6413 in the 20051021 release.
6415 Implemented support for "local" internal ACPI object types within the
6416 debugger "Object" command and the AcpiWalkNamespace external interfaces.
6417 These local types include RegionFields, BankFields, IndexFields, Alias,
6421 Moved common AML resource handling code into a new file, "utresrc.c". This
6422 code is shared by both the Resource Manager and the AML Debugger.
6424 Code and Data Size: The current and previous library sizes for the core
6425 subsystem are shown below. These are the code and data sizes for the
6426 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
6427 values do not include any ACPI driver or OSPM code. The debug version of
6429 code includes the debug output trace mechanism and has a much larger code
6430 and data size. Note that these values will vary depending on the
6432 of the compiler and the compiler options used during generation.
6435 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
6436 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
6438 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
6439 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
6442 2) iASL Compiler/Disassembler:
6444 Fixed a problem with very large initializer lists (more than 4000
6446 for both Buffer and Package objects where the parse stack could overflow.
6448 Enhanced the pre-compile source code scan for non-ASCII characters to
6450 characters within comment fields. The scan is now always performed and is
6452 longer optional, detecting invalid characters within a source file
6453 immediately rather than during the parse phase or later.
6455 Enhanced the ASL grammar definition to force early reductions on all list-
6456 style grammar elements so that the overall parse stack usage is greatly
6457 reduced. This should improve performance and reduce the possibility of
6461 Eliminated all reduce/reduce conflicts in the iASL parser generation.
6463 with the addition of a %expected statement, the compiler generates from
6464 source with no warnings.
6466 Fixed a possible segment fault in the disassembler if the input filename
6467 does not contain a "dot" extension (Thomas Renninger).
6469 ----------------------------------------
6470 21 October 2005. Summary of changes for version 20051021:
6472 1) ACPI CA Core Subsystem:
6474 Implemented support for the EM64T and other x86-64 processors. This
6475 essentially entails recognizing that these processors support non-aligned
6476 memory transfers. Previously, all 64-bit processors were assumed to lack
6477 hardware support for non-aligned transfers.
6479 Completed conversion of the Resource Manager to nearly full table-driven
6480 operation. Specifically, the resource conversion code (convert AML to
6481 internal format and the reverse) and the debug code to dump internal
6482 resource descriptors are fully table-driven, reducing code and data size
6484 improving maintainability.
6486 The OSL interfaces for Acquire and Release Lock now use a 64-bit flag word
6487 on 64-bit processors instead of a fixed 32-bit word. (With assistance from
6488 Alexey Starikovskiy)
6490 Implemented support within the resource conversion code for the Type-
6491 Specific byte within the various ACPI 3.0 *WordSpace macros.
6493 Fixed some issues within the resource conversion code for the type-
6495 flags for both Memory and I/O address resource descriptors. For Memory,
6496 implemented support for the MTP and TTP flags. For I/O, split the TRS and
6497 TTP flags into two separate fields.
6499 Code and Data Size: The current and previous library sizes for the core
6500 subsystem are shown below. These are the code and data sizes for the
6501 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
6502 values do not include any ACPI driver or OSPM code. The debug version of
6504 code includes the debug output trace mechanism and has a much larger code
6505 and data size. Note that these values will vary depending on the
6507 of the compiler and the compiler options used during generation.
6510 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
6511 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
6513 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
6514 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
6518 2) iASL Compiler/Disassembler:
6520 Relaxed a compiler restriction that disallowed a ResourceIndex byte if the
6521 corresponding ResourceSource string was not also present in a resource
6522 descriptor declaration. This restriction caused problems with existing
6523 AML/ASL code that includes the Index byte without the string. When such
6525 was disassembled, it could not be compiled without modification. Further,
6526 the modified code created a resource template with a different size than
6528 original, breaking code that used fixed offsets into the resource template
6531 Removed a recent feature of the disassembler to ignore a lone
6533 byte. This byte is now emitted if present so that the exact AML can be
6534 reproduced when the disassembled code is recompiled.
6536 Improved comments and text alignment for the resource descriptor code
6537 emitted by the disassembler.
6539 Implemented disassembler support for the ACPI 3.0 AccessSize field within
6541 Register() resource descriptor.
6543 ----------------------------------------
6544 30 September 2005. Summary of changes for version 20050930:
6546 1) ACPI CA Core Subsystem:
6548 Completed a major overhaul of the Resource Manager code - specifically,
6549 optimizations in the area of the AML/internal resource conversion code.
6551 code has been optimized to simplify and eliminate duplicated code, CPU
6553 use has been decreased by optimizing function parameters and local
6554 variables, and naming conventions across the manager have been
6556 for clarity and ease of maintenance (this includes function, parameter,
6557 variable, and struct/typedef names.) The update may force changes in some
6558 driver code, depending on how resources are handled by the host OS.
6560 All Resource Manager dispatch and information tables have been moved to a
6561 single location for clarity and ease of maintenance. One new file was
6562 created, named "rsinfo.c".
6564 The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to
6565 guarantee that the argument is not evaluated twice, making them less prone
6566 to macro side-effects. However, since there exists the possibility of
6567 additional stack use if a particular compiler cannot optimize them (such
6569 in the debug generation case), the original macros are optionally
6571 Note that some invocations of the return_VALUE macro may now cause size
6572 mismatch warnings; the return_UINT8 and return_UINT32 macros are provided
6574 eliminate these. (From Randy Dunlap)
6576 Implemented a new mechanism to enable debug tracing for individual control
6577 methods. A new external interface, AcpiDebugTrace, is provided to enable
6578 this mechanism. The intent is to allow the host OS to easily enable and
6579 disable tracing for problematic control methods. This interface can be
6580 easily exposed to a user or debugger interface if desired. See the file
6581 psxface.c for details.
6583 AcpiUtCallocate will now return a valid pointer if a length of zero is
6584 specified - a length of one is used and a warning is issued. This matches
6585 the behavior of AcpiUtAllocate.
6587 Code and Data Size: The current and previous library sizes for the core
6588 subsystem are shown below. These are the code and data sizes for the
6589 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
6590 values do not include any ACPI driver or OSPM code. The debug version of
6592 code includes the debug output trace mechanism and has a much larger code
6593 and data size. Note that these values will vary depending on the
6595 of the compiler and the compiler options used during generation.
6598 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
6599 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
6601 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
6602 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
6605 2) iASL Compiler/Disassembler:
6607 A remark is issued if the effective compile-time length of a package or
6608 buffer is zero. Previously, this was a warning.
6610 ----------------------------------------
6611 16 September 2005. Summary of changes for version 20050916:
6613 1) ACPI CA Core Subsystem:
6615 Fixed a problem within the Resource Manager where support for the Generic
6616 Register descriptor was not fully implemented. This descriptor is now
6618 recognized, parsed, disassembled, and displayed.
6620 Completely restructured the Resource Manager code to utilize table-driven
6621 dispatch and lookup, eliminating many of the large switch() statements.
6623 reduces overall subsystem code size and code complexity. Affects the
6624 resource parsing and construction, disassembly, and debug dump output.
6626 Cleaned up and restructured the debug dump output for all resource
6627 descriptors. Improved readability of the output and reduced code size.
6629 Fixed a problem where changes to internal data structures caused the
6630 optional ACPI_MUTEX_DEBUG code to fail compilation if specified.
6632 Code and Data Size: The current and previous library sizes for the core
6633 subsystem are shown below. These are the code and data sizes for the
6634 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
6635 values do not include any ACPI driver or OSPM code. The debug version of
6637 code includes the debug output trace mechanism and has a much larger code
6638 and data size. Note that these values will vary depending on the
6640 of the compiler and the compiler options used during generation.
6643 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
6644 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
6646 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
6647 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
6650 2) iASL Compiler/Disassembler:
6652 Updated the disassembler to automatically insert an EndDependentFn() macro
6653 into the ASL stream if this macro is missing in the original AML code,
6654 simplifying compilation of the resulting ASL module.
6656 Fixed a problem in the disassembler where a disassembled ResourceSource
6657 string (within a large resource descriptor) was not surrounded by quotes
6659 not followed by a comma, causing errors when the resulting ASL module was
6660 compiled. Also, escape sequences within a ResourceSource string are now
6661 handled correctly (especially "\\")
6663 ----------------------------------------
6664 02 September 2005. Summary of changes for version 20050902:
6666 1) ACPI CA Core Subsystem:
6668 Fixed a problem with the internal Owner ID allocation and deallocation
6669 mechanisms for control method execution and recursive method invocation.
6670 This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId"
6671 messages seen on some systems. Recursive method invocation depth is
6672 currently limited to 255. (Alexey Starikovskiy)
6674 Completely eliminated all vestiges of support for the "module-level
6675 executable code" until this support is fully implemented and debugged.
6677 should eliminate the NO_RETURN_VALUE exceptions seen during table load on
6678 some systems that invoke this support.
6680 Fixed a problem within the resource manager code where the transaction
6682 for a 64-bit address descriptor were handled incorrectly in the type-
6685 Consolidated duplicate code within the address descriptor resource manager
6686 code, reducing overall subsystem code size.
6688 Fixed a fault when using the AML debugger "disassemble" command to
6689 disassemble individual control methods.
6691 Removed references to the "release_current" directory within the Unix
6694 Code and Data Size: The current and previous core subsystem library sizes
6695 are shown below. These are the code and data sizes for the acpica.lib
6696 produced by the Microsoft Visual C++ 6.0 compiler. These values do not
6697 include any ACPI driver or OSPM code. The debug version of the code
6699 the debug output trace mechanism and has a much larger code and data size.
6700 Note that these values will vary depending on the efficiency of the
6702 and the compiler options used during generation.
6705 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
6706 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
6708 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
6709 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
6712 2) iASL Compiler/Disassembler:
6714 Implemented an error check for illegal duplicate values in the interrupt
6716 dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and
6719 Implemented error checking for the Irq() and IrqNoFlags() macros to detect
6720 too many values in the interrupt list (16 max) and invalid values in the
6723 The maximum length string literal within an ASL file is now restricted to
6724 200 characters as per the ACPI specification.
6726 Fixed a fault when using the -ln option (generate namespace listing).
6728 Implemented an error check to determine if a DescriptorName within a
6729 resource descriptor has already been used within the current scope.
6731 ----------------------------------------
6732 15 August 2005. Summary of changes for version 20050815:
6734 1) ACPI CA Core Subsystem:
6736 Implemented a full bytewise compare to determine if a table load request
6738 attempting to load a duplicate table. The compare is performed if the
6740 signatures and table lengths match. This will allow different tables with
6741 the same OEM Table ID and revision to be loaded - probably against the
6743 specification, but discovered in the field nonetheless.
6745 Added the changes.txt logfile to each of the zipped release packages.
6747 Code and Data Size: Current and previous core subsystem library sizes are
6748 shown below. These are the code and data sizes for the acpica.lib produced
6749 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
6750 any ACPI driver or OSPM code. The debug version of the code includes the
6751 debug output trace mechanism and has a much larger code and data size.
6753 that these values will vary depending on the efficiency of the compiler
6755 the compiler options used during generation.
6758 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
6759 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
6761 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
6762 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
6765 2) iASL Compiler/Disassembler:
6767 Fixed a problem where incorrect AML code could be generated for Package
6768 objects if optimization is disabled (via the -oa switch).
6770 Fixed a problem with where incorrect AML code is generated for variable-
6771 length packages when the package length is not specified and the number of
6772 initializer values is greater than 255.
6775 ----------------------------------------
6776 29 July 2005. Summary of changes for version 20050729:
6778 1) ACPI CA Core Subsystem:
6780 Implemented support to ignore an attempt to install/load a particular ACPI
6781 table more than once. Apparently there exists BIOS code that repeatedly
6782 attempts to load the same SSDT upon certain events. With assistance from
6783 Venkatesh Pallipadi.
6785 Restructured the main interface to the AML parser in order to correctly
6786 handle all exceptional conditions. This will prevent leakage of the
6788 resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on
6790 machines. With assistance from Alexey Starikovskiy.
6792 Support for "module level code" has been disabled in this version due to a
6793 number of issues that have appeared on various machines. The support can
6795 enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem
6796 compilation. When the issues are fully resolved, the code will be enabled
6800 Modified the internal functions for debug print support to define the
6801 FunctionName parameter as a (const char *) for compatibility with compiler
6802 built-in macros such as __FUNCTION__, etc.
6804 Linted the entire ACPICA source tree for both 32-bit and 64-bit.
6806 Implemented support to display an object count summary for the AML
6808 commands Object and Methods.
6810 Code and Data Size: Current and previous core subsystem library sizes are
6811 shown below. These are the code and data sizes for the acpica.lib produced
6812 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
6813 any ACPI driver or OSPM code. The debug version of the code includes the
6814 debug output trace mechanism and has a much larger code and data size.
6816 that these values will vary depending on the efficiency of the compiler
6818 the compiler options used during generation.
6821 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
6822 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
6824 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
6825 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
6828 2) iASL Compiler/Disassembler:
6830 Fixed a regression that appeared in the 20050708 version of the compiler
6831 where an error message was inadvertently emitted for invocations of the
6833 reserved control method.
6835 ----------------------------------------
6836 08 July 2005. Summary of changes for version 20050708:
6838 1) ACPI CA Core Subsystem:
6840 The use of the CPU stack in the debug version of the subsystem has been
6841 considerably reduced. Previously, a debug structure was declared in every
6842 function that used the debug macros. This structure has been removed in
6843 favor of declaring the individual elements as parameters to the debug
6844 functions. This reduces the cumulative stack use during nested execution
6846 ACPI function calls at the cost of a small increase in the code size of
6848 debug version of the subsystem. With assistance from Alexey Starikovskiy
6852 Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent
6853 headers to define a macro that will return the current function name at
6854 runtime (such as __FUNCTION__ or _func_, etc.) The function name is used
6856 the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the
6857 compiler-dependent header, the function name is saved on the CPU stack
6859 pointer per function.) This mechanism is used because apparently there
6860 exists no standard ANSI-C defined macro that that returns the function
6863 Redesigned and reimplemented the "Owner ID" mechanism used to track
6864 namespace objects created/deleted by ACPI tables and control method
6865 execution. A bitmap is now used to allocate and free the IDs, thus solving
6866 the wraparound problem present in the previous implementation. The size of
6867 the namespace node descriptor was reduced by 2 bytes as a result (Alexey
6870 Removed the UINT32_BIT and UINT16_BIT types that were used for the
6872 flag definitions within the headers for the predefined ACPI tables. These
6873 have been replaced by UINT8_BIT in order to increase the code portability
6875 the subsystem. If the use of UINT8 remains a problem, we may be forced to
6876 eliminate bitfields entirely because of a lack of portability.
6878 Enhanced the performance of the AcpiUtUpdateObjectReference procedure.
6880 is a frequently used function and this improvement increases the
6882 of the entire subsystem (Alexey Starikovskiy).
6884 Fixed several possible memory leaks and the inverse - premature object
6885 deletion (Alexey Starikovskiy).
6887 Code and Data Size: Current and previous core subsystem library sizes are
6888 shown below. These are the code and data sizes for the acpica.lib produced
6889 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
6890 any ACPI driver or OSPM code. The debug version of the code includes the
6891 debug output trace mechanism and has a much larger code and data size.
6893 that these values will vary depending on the efficiency of the compiler
6895 the compiler options used during generation.
6898 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
6899 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
6901 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
6902 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
6904 ----------------------------------------
6905 24 June 2005. Summary of changes for version 20050624:
6907 1) ACPI CA Core Subsystem:
6909 Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for
6910 the host-defined cache object. This allows the OSL implementation to
6912 and type this object in any manner desired, simplifying the OSL
6913 implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for
6914 Linux, and should be defined in the OS-specific header file for other
6915 operating systems as required.
6917 Changed the interface to AcpiOsAcquireObject to directly return the
6918 requested object as the function return (instead of ACPI_STATUS.) This
6919 change was made for performance reasons, since this is the purpose of the
6920 interface in the first place. AcpiOsAcquireObject is now similar to the
6921 AcpiOsAllocate interface.
6923 Implemented a new AML debugger command named Businfo. This command
6925 information about all devices that have an associate _PRT object. The
6927 _HID, _UID, and _CID are displayed for these devices.
6929 Modified the initialization sequence in AcpiInitializeSubsystem to call
6931 OSL interface AcpiOslInitialize first, before any local initialization.
6933 change was required because the global initialization now calls OSL
6936 Enhanced the Dump command to display the entire contents of Package
6938 (including all sub-objects and their values.)
6940 Restructured the code base to split some files because of size and/or
6941 because the code logically belonged in a separate file. New files are
6943 below. All makefiles and project files included in the ACPI CA release
6946 utilities/utcache.c /* Local cache interfaces */
6947 utilities/utmutex.c /* Local mutex support */
6948 utilities/utstate.c /* State object support */
6949 interpreter/parser/psloop.c /* Main AML parse loop */
6951 Code and Data Size: Current and previous core subsystem library sizes are
6952 shown below. These are the code and data sizes for the acpica.lib produced
6953 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
6954 any ACPI driver or OSPM code. The debug version of the code includes the
6955 debug output trace mechanism and has a much larger code and data size.
6957 that these values will vary depending on the efficiency of the compiler
6959 the compiler options used during generation.
6962 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
6963 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
6965 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
6966 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
6969 2) iASL Compiler/Disassembler:
6971 Fixed a regression introduced in version 20050513 where the use of a
6973 object within a Case() statement caused a compile time exception. The
6974 original behavior has been restored (a Match() operator is emitted.)
6976 ----------------------------------------
6977 17 June 2005. Summary of changes for version 20050617:
6979 1) ACPI CA Core Subsystem:
6981 Moved the object cache operations into the OS interface layer (OSL) to
6983 the host OS to handle these operations if desired (for example, the Linux
6984 OSL will invoke the slab allocator). This support is optional; the compile
6985 time define ACPI_USE_LOCAL_CACHE may be used to utilize the original cache
6986 code in the ACPI CA core. The new OSL interfaces are shown below. See
6987 utalloc.c for an example implementation, and acpiosxf.h for the exact
6988 interface definitions. With assistance from Alexey Starikovskiy.
6995 Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to
6997 and restore a flags parameter. This fits better with many OS lock models.
6998 Note: the current execution state (interrupt handler or not) is no longer
6999 passed to these interfaces. If necessary, the OSL must determine this
7001 by itself, a simple and fast operation. With assistance from Alexey
7004 Fixed a problem in the ACPI table handling where a valid XSDT was assumed
7005 present if the revision of the RSDP was 2 or greater. According to the
7007 specification, the XSDT is optional in all cases, and the table manager
7008 therefore now checks for both an RSDP >=2 and a valid XSDT pointer.
7009 Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs contain
7012 Fixed an interpreter problem with the Mid() operator in the case of an
7014 string where the resulting output string is of zero length. It now
7016 returns a valid, null terminated string object instead of a string object
7017 with a null pointer.
7019 Fixed a problem with the control method argument handling to allow a store
7020 to an Arg object that already contains an object of type Device. The
7022 object is now correctly overwritten. Previously, an error was returned.
7025 Enhanced the debugger Find command to emit object values in addition to
7027 found object pathnames. The output format is the same as the dump
7031 Enhanced the debugger Set command. It now has the ability to set the value
7032 of any Named integer object in the namespace (Previously, only method
7034 and args could be set.)
7036 Code and Data Size: Current and previous core subsystem library sizes are
7037 shown below. These are the code and data sizes for the acpica.lib produced
7038 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
7039 any ACPI driver or OSPM code. The debug version of the code includes the
7040 debug output trace mechanism and has a much larger code and data size.
7042 that these values will vary depending on the efficiency of the compiler
7044 the compiler options used during generation.
7047 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
7048 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
7050 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
7051 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
7054 2) iASL Compiler/Disassembler:
7056 Fixed a regression in the disassembler where if/else/while constructs were
7057 output incorrectly. This problem was introduced in the previous release
7058 (20050526). This problem also affected the single-step disassembly in the
7061 Fixed a problem where compiling the reserved _OSI method would randomly
7063 rarely) produce compile errors.
7065 Enhanced the disassembler to emit compilable code in the face of incorrect
7066 AML resource descriptors. If the optional ResourceSourceIndex is present,
7067 but the ResourceSource is not, do not emit the ResourceSourceIndex in the
7068 disassembly. Otherwise, the resulting code cannot be compiled without
7071 ----------------------------------------
7072 26 May 2005. Summary of changes for version 20050526:
7074 1) ACPI CA Core Subsystem:
7076 Implemented support to execute Type 1 and Type 2 AML opcodes appearing at
7077 the module level (not within a control method.) These opcodes are executed
7078 exactly once at the time the table is loaded. This type of code was legal
7080 until the release of ACPI 2.0B (2002) and is now supported within ACPI CA
7082 order to provide backwards compatibility with earlier BIOS
7084 This eliminates the "Encountered executable code at module level" warning
7085 that was previously generated upon detection of such code.
7087 Fixed a problem in the interpreter where an AE_NOT_FOUND exception could
7088 inadvertently be generated during the lookup of namespace objects in the
7089 second pass parse of ACPI tables and control methods. It appears that this
7090 problem could occur during the resolution of forward references to
7094 Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function,
7095 corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This
7096 allows the deadlock detection debug code to be compiled out in the normal
7097 case, improving mutex performance (and overall subsystem performance)
7100 Implemented a handful of miscellaneous fixes for possible memory leaks on
7101 error conditions and error handling control paths. These fixes were
7102 suggested by FreeBSD and the Coverity Prevent source code analysis tool.
7104 Added a check for a null RSDT pointer in AcpiGetFirmwareTable (tbxfroot.c)
7105 to prevent a fault in this error case.
7107 Code and Data Size: Current and previous core subsystem library sizes are
7108 shown below. These are the code and data sizes for the acpica.lib produced
7109 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
7110 any ACPI driver or OSPM code. The debug version of the code includes the
7111 debug output trace mechanism and has a much larger code and data size.
7113 that these values will vary depending on the efficiency of the compiler
7115 the compiler options used during generation.
7118 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
7119 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
7121 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
7122 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
7125 2) iASL Compiler/Disassembler:
7127 Implemented support to allow Type 1 and Type 2 ASL operators to appear at
7128 the module level (not within a control method.) These operators will be
7129 executed once at the time the table is loaded. This type of code was legal
7130 up until the release of ACPI 2.0B (2002) and is now supported by the iASL
7131 compiler in order to provide backwards compatibility with earlier BIOS ASL
7134 The ACPI integer width (specified via the table revision ID or the -r
7135 override, 32 or 64 bits) is now used internally during compile-time
7137 folding to ensure that constants are truncated to 32 bits if necessary.
7138 Previously, the revision ID value was only emitted in the AML table
7141 An error message is now generated for the Mutex and Method operators if
7143 SyncLevel parameter is outside the legal range of 0 through 15.
7145 Fixed a problem with the Method operator ParameterTypes list handling
7147 3.0). Previously, more than 2 types or 2 arguments generated a syntax
7149 The actual underlying implementation of method argument typechecking is
7150 still under development, however.
7152 ----------------------------------------
7153 13 May 2005. Summary of changes for version 20050513:
7155 1) ACPI CA Core Subsystem:
7157 Implemented support for PCI Express root bridges -- added support for
7159 PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup.
7161 The interpreter now automatically truncates incoming 64-bit constants to
7163 bits if currently executing out of a 32-bit ACPI table (Revision < 2).
7165 also affects the iASL compiler constant folding. (Note: as per below, the
7166 iASL compiler no longer allows 64-bit constants within 32-bit tables.)
7168 Fixed a problem where string and buffer objects with "static" pointers
7169 (pointers to initialization data within an ACPI table) were not handled
7170 consistently. The internal object copy operation now always copies the
7172 to a newly allocated buffer, regardless of whether the source object is
7175 Fixed a problem with the FromBCD operator where an implicit result
7176 conversion was improperly performed while storing the result to the target
7177 operand. Since this is an "explicit conversion" operator, the implicit
7178 conversion should never be performed on the output.
7180 Fixed a problem with the CopyObject operator where a copy to an existing
7181 named object did not always completely overwrite the existing object
7183 at name. Specifically, a buffer-to-buffer copy did not delete the existing
7186 Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces and
7187 structs for consistency.
7189 Code and Data Size: Current and previous core subsystem library sizes are
7190 shown below. These are the code and data sizes for the acpica.lib produced
7191 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
7192 any ACPI driver or OSPM code. The debug version of the code includes the
7193 debug output trace mechanism and has a much larger code and data size.
7195 that these values will vary depending on the efficiency of the compiler
7197 the compiler options used during generation.
7200 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
7201 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
7202 Current Release: (Same sizes)
7203 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
7204 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
7207 2) iASL Compiler/Disassembler:
7209 The compiler now emits a warning if an attempt is made to generate a 64-
7211 integer constant from within a 32-bit ACPI table (Revision < 2). The
7213 is truncated to 32 bits.
7215 Fixed a problem with large package objects: if the static length of the
7216 package is greater than 255, the "variable length package" opcode is
7217 emitted. Previously, this caused an error. This requires an update to the
7218 ACPI spec, since it currently (incorrectly) states that packages larger
7220 255 elements are not allowed.
7222 The disassembler now correctly handles variable length packages and
7224 larger than 255 elements.
7226 ----------------------------------------
7227 08 April 2005. Summary of changes for version 20050408:
7229 1) ACPI CA Core Subsystem:
7231 Fixed three cases in the interpreter where an "index" argument to an ASL
7232 function was still (internally) 32 bits instead of the required 64 bits.
7233 This was the Index argument to the Index, Mid, and Match operators.
7235 The "strupr" function is now permanently local (AcpiUtStrupr), since this
7237 not a POSIX-defined function and not present in most kernel-level C
7238 libraries. All references to the C library strupr function have been
7242 Completed the deployment of static functions/prototypes. All prototypes
7244 the static attribute have been moved from the headers to the owning C
7247 Implemented an extract option (-e) for the AcpiBin utility (AML binary
7248 utility). This option allows the utility to extract individual ACPI tables
7249 from the output of AcpiDmp. It provides the same functionality of the
7250 acpixtract.pl perl script without the worry of setting the correct perl
7251 options. AcpiBin runs on Windows and has not yet been generated/validated
7253 the Linux/Unix environment (but should be soon).
7255 Updated and fixed the table dump option for AcpiBin (-d). This option
7256 converts a single ACPI table to a hex/ascii file, similar to the output of
7259 Code and Data Size: Current and previous core subsystem library sizes are
7260 shown below. These are the code and data sizes for the acpica.lib produced
7261 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
7262 any ACPI driver or OSPM code. The debug version of the code includes the
7263 debug output trace mechanism and has a much larger code and data size.
7265 that these values will vary depending on the efficiency of the compiler
7267 the compiler options used during generation.
7270 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
7271 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
7273 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
7274 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
7277 2) iASL Compiler/Disassembler:
7279 Disassembler fix: Added a check to ensure that the table length found in
7281 ACPI table header within the input file is not longer than the actual
7283 file size. This indicates some kind of file or table corruption.
7285 ----------------------------------------
7286 29 March 2005. Summary of changes for version 20050329:
7288 1) ACPI CA Core Subsystem:
7290 An error is now generated if an attempt is made to create a Buffer Field
7292 length zero (A CreateField with a length operand of zero.)
7294 The interpreter now issues a warning whenever executable code at the
7296 level is detected during ACPI table load. This will give some idea of the
7297 prevalence of this type of code.
7299 Implemented support for references to named objects (other than control
7300 methods) within package objects.
7302 Enhanced package object output for the debug object. Package objects are
7304 completely dumped, showing all elements.
7306 Enhanced miscellaneous object output for the debug object. Any object can
7307 now be written to the debug object (for example, a device object can be
7308 written, and the type of the object will be displayed.)
7310 The "static" qualifier has been added to all local functions across both
7312 core subsystem and the iASL compiler.
7314 The number of "long" lines (> 80 chars) within the source has been
7315 significantly reduced, by about 1/3.
7317 Cleaned up all header files to ensure that all CA/iASL functions are
7318 prototyped (even static functions) and the formatting is consistent.
7320 Two new header files have been added, acopcode.h and acnames.h.
7322 Removed several obsolete functions that were no longer used.
7324 Code and Data Size: Current and previous core subsystem library sizes are
7325 shown below. These are the code and data sizes for the acpica.lib produced
7326 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
7327 any ACPI driver or OSPM code. The debug version of the code includes the
7328 debug output trace mechanism and has a much larger code and data size.
7330 that these values will vary depending on the efficiency of the compiler
7332 the compiler options used during generation.
7335 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
7336 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
7338 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
7339 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
7343 2) iASL Compiler/Disassembler:
7345 Fixed a problem with the resource descriptor generation/support. For the
7346 ResourceSourceIndex and the ResourceSource fields, both must be present,
7348 both must be not present - can't have one without the other.
7350 The compiler now returns non-zero from the main procedure if any errors
7352 occurred during the compilation.
7355 ----------------------------------------
7356 09 March 2005. Summary of changes for version 20050309:
7358 1) ACPI CA Core Subsystem:
7360 The string-to-buffer implicit conversion code has been modified again
7362 a change to the ACPI specification. In order to match the behavior of the
7363 other major ACPI implementation, the target buffer is no longer truncated
7365 the source string is smaller than an existing target buffer. This change
7366 requires an update to the ACPI spec, and should eliminate the recent
7367 AE_AML_BUFFER_LIMIT issues.
7369 The "implicit return" support was rewritten to a new algorithm that solves
7370 the general case. Rather than attempt to determine when a method is about
7372 exit, the result of every ASL operator is saved momentarily until the very
7373 next ASL operator is executed. Therefore, no matter how the method exits,
7374 there will always be a saved implicit return value. This feature is only
7375 enabled with the AcpiGbl_EnableInterpreterSlack flag, and should eliminate
7376 AE_AML_NO_RETURN_VALUE errors when enabled.
7378 Implemented implicit conversion support for the predicate (operand) of the
7379 If, Else, and While operators. String and Buffer arguments are
7381 converted to Integers.
7383 Changed the string-to-integer conversion behavior to match the new ACPI
7384 errata: "If no integer object exists, a new integer is created. The ASCII
7385 string is interpreted as a hexadecimal constant. Each string character is
7386 interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting
7387 with the first character as the most significant digit, and ending with
7389 first non-hexadecimal character or end-of-string." This means that the
7391 non-hex character terminates the conversion and this is the code that was
7394 Fixed a problem where the ObjectType operator would fail (fault) when used
7395 on an Index of a Package which pointed to a null package element. The
7396 operator now properly returns zero (Uninitialized) in this case.
7398 Fixed a problem where the While operator used excessive memory by not
7399 properly popping the result stack during execution. There was no memory
7401 after execution, however. (Code provided by Valery Podrezov.)
7403 Fixed a problem where references to control methods within Package objects
7404 caused the method to be invoked, instead of producing a reference object
7405 pointing to the method.
7407 Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) to
7408 improve performance and reduce code size. (Code provided by Alexey
7411 Code and Data Size: Current and previous core subsystem library sizes are
7412 shown below. These are the code and data sizes for the acpica.lib produced
7413 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
7414 any ACPI driver or OSPM code. The debug version of the code includes the
7415 debug output trace mechanism and has a much larger code and data size.
7417 that these values will vary depending on the efficiency of the compiler
7419 the compiler options used during generation.
7422 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
7423 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
7425 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
7426 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
7429 2) iASL Compiler/Disassembler:
7431 Fixed a problem with the Return operator with no arguments. Since the AML
7432 grammar for the byte encoding requires an operand for the Return opcode,
7434 compiler now emits a Return(Zero) for this case. An ACPI specification
7435 update has been written for this case.
7437 For tables other than the DSDT, namepath optimization is automatically
7438 disabled. This is because SSDTs can be loaded anywhere in the namespace,
7440 compiler has no knowledge of where, and thus cannot optimize namepaths.
7442 Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was
7443 inadvertently omitted from the ACPI specification, and will require an
7446 The source file scan for ASCII characters is now optional (-a). This
7448 was made because some vendors place non-ascii characters within comments.
7449 However, the scan is simply a brute-force byte compare to ensure all
7450 characters in the file are in the range 0x00 to 0x7F.
7452 Fixed a problem with the CondRefOf operator where the compiler was
7453 inappropriately checking for the existence of the target. Since the point
7455 the operator is to check for the existence of the target at run-time, the
7456 compiler no longer checks for the target existence.
7458 Fixed a problem where errors generated from the internal AML interpreter
7459 during constant folding were not handled properly, causing a fault.
7461 Fixed a problem with overly aggressive range checking for the Stall
7462 operator. The valid range (max 255) is now only checked if the operand is
7464 type Integer. All other operand types cannot be statically checked.
7466 Fixed a problem where control method references within the RefOf, DeRefOf,
7467 and ObjectType operators were not treated properly. They are now treated
7469 actual references, not method invocations.
7471 Fixed and enhanced the "list namespace" option (-ln). This option was
7473 a number of releases ago.
7475 Improved error handling for the Field, IndexField, and BankField
7477 The compiler now cleanly reports and recovers from errors in the field
7478 component (FieldUnit) list.
7480 Fixed a disassembler problem where the optional ResourceDescriptor fields
7481 TRS and TTP were not always handled correctly.
7483 Disassembler - Comments in output now use "//" instead of "/*"
7485 ----------------------------------------
7486 28 February 2005. Summary of changes for version 20050228:
7488 1) ACPI CA Core Subsystem:
7490 Fixed a problem where the result of an Index() operator (an object
7491 reference) must increment the reference count on the target object for the
7492 life of the object reference.
7494 Implemented AML Interpreter and Debugger support for the new ACPI 3.0
7495 Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and
7497 resource descriptors.
7499 Implemented support in the _OSI method for the ACPI 3.0 "Extended Address
7500 Space Descriptor" string, indicating interpreter support for the
7504 Implemented header support for the new ACPI 3.0 FADT flag bits.
7506 Implemented header support for the new ACPI 3.0 PCI Express bits for the
7508 status/enable registers.
7510 Updated header support for the MADT processor local Apic struct and MADT
7511 platform interrupt source struct for new ACPI 3.0 fields.
7513 Implemented header support for the SRAT and SLIT ACPI tables.
7515 Implemented the -s switch in AcpiExec to enable the "InterpreterSlack"
7519 Code and Data Size: Current and previous core subsystem library sizes are
7520 shown below. These are the code and data sizes for the acpica.lib produced
7521 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
7522 any ACPI driver or OSPM code. The debug version of the code includes the
7523 debug output trace mechanism and has a much larger code and data size.
7525 that these values will vary depending on the efficiency of the compiler
7527 the compiler options used during generation.
7530 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
7531 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
7533 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
7534 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
7537 2) iASL Compiler/Disassembler:
7539 Fixed a problem with the internal 64-bit String-to-integer conversion with
7540 strings less than two characters long.
7542 Fixed a problem with constant folding where the result of the Index()
7543 operator can not be considered a constant. This means that Index() cannot
7545 a type3 opcode and this will require an update to the ACPI specification.
7547 Disassembler: Implemented support for the TTP, MTP, and TRS resource
7548 descriptor fields. These fields were inadvertently ignored and not output
7550 the disassembly of the resource descriptor.
7553 ----------------------------------------
7554 11 February 2005. Summary of changes for version 20050211:
7556 1) ACPI CA Core Subsystem:
7558 Implemented ACPI 3.0 support for implicit conversion within the Match()
7559 operator. MatchObjects can now be of type integer, buffer, or string
7561 of just type integer. Package elements are implicitly converted to the
7563 of the MatchObject. This change aligns the behavior of Match() with the
7564 behavior of the other logical operators (LLess(), etc.) It also requires
7566 errata change to the ACPI specification as this support was intended for
7567 ACPI 3.0, but was inadvertently omitted.
7569 Fixed a problem with the internal implicit "to buffer" conversion. Strings
7570 that are converted to buffers will cause buffer truncation if the string
7572 smaller than the target buffer. Integers that are converted to buffers
7574 not cause buffer truncation, only zero extension (both as per the ACPI
7575 spec.) The problem was introduced when code was added to truncate the
7576 buffer, but this should not be performed in all cases, only the string
7579 Fixed a problem with the Buffer and Package operators where the
7581 would get confused if two such operators were used as operands to an ASL
7582 operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result
7583 stack was not being popped after the execution of these operators,
7585 in an AE_NO_RETURN_VALUE exception.
7587 Fixed a problem with constructs of the form Store(Index(...),...). The
7588 reference object returned from Index was inadvertently resolved to an
7590 value. This problem was introduced in version 20050114 when the behavior
7592 Store() was modified to restrict the object types that can be used as the
7593 source operand (to match the ACPI specification.)
7595 Reduced excessive stack use within the AcpiGetObjectInfo procedure.
7597 Added a fix to aclinux.h to allow generation of AcpiExec on Linux.
7599 Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct.
7601 Code and Data Size: Current and previous core subsystem library sizes are
7602 shown below. These are the code and data sizes for the acpica.lib produced
7603 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
7604 any ACPI driver or OSPM code. The debug version of the code includes the
7605 debug output trace mechanism and has a much larger code and data size.
7607 that these values will vary depending on the efficiency of the compiler
7609 the compiler options used during generation.
7612 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
7613 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
7615 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
7616 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
7619 2) iASL Compiler/Disassembler:
7621 Fixed a code generation problem in the constant folding optimization code
7622 where incorrect code was generated if a constant was reduced to a buffer
7623 object (i.e., a reduced type 5 opcode.)
7625 Fixed a typechecking problem for the ToBuffer operator. Caused by an
7626 incorrect return type in the internal opcode information table.
7628 ----------------------------------------
7629 25 January 2005. Summary of changes for version 20050125:
7631 1) ACPI CA Core Subsystem:
7633 Fixed a recently introduced problem with the Global Lock where the
7634 underlying semaphore was not created. This problem was introduced in
7635 version 20050114, and caused an AE_AML_NO_OPERAND exception during an
7636 Acquire() operation on _GL.
7638 The local object cache is now optional, and is disabled by default. Both
7639 AcpiExec and the iASL compiler enable the cache because they run in user
7640 mode and this enhances their performance. #define ACPI_ENABLE_OBJECT_CACHE
7641 to enable the local cache.
7643 Fixed an issue in the internal function AcpiUtEvaluateObject concerning
7645 optional "implicit return" support where an error was returned if no
7647 object was expected, but one was implicitly returned. AE_OK is now
7649 in this case and the implicitly returned object is deleted.
7650 AcpiUtEvaluateObject is only occasionally used, and only to execute
7652 methods such as _STA and _INI where the return type is known up front.
7654 Fixed a few issues with the internal convert-to-integer code. It now
7656 an error if an attempt is made to convert a null string, a string of only
7657 blanks/tabs, or a zero-length buffer. This affects both implicit
7659 and explicit conversion via the ToInteger() operator.
7661 The internal debug code in AcpiUtAcquireMutex has been commented out. It
7663 not needed for normal operation and should increase the performance of the
7664 entire subsystem. The code remains in case it is needed for debug purposes
7667 The AcpiExec source and makefile are included in the Unix/Linux package
7671 Code and Data Size: Current and previous core subsystem library sizes are
7672 shown below. These are the code and data sizes for the acpica.lib produced
7673 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
7674 any ACPI driver or OSPM code. The debug version of the code includes the
7675 debug output trace mechanism and has a much larger code and data size.
7677 that these values will vary depending on the efficiency of the compiler
7679 the compiler options used during generation.
7682 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
7683 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
7685 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
7686 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
7688 2) iASL Compiler/Disassembler:
7690 Switch/Case support: A warning is now issued if the type of the Switch
7692 cannot be determined at compile time. For example, Switch(Arg0) will
7693 generate the warning, and the type is assumed to be an integer. As per the
7694 ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate
7698 Switch/Case support: Implemented support for buffer and string objects as
7699 the switch value. This is an ACPI 3.0 feature, now that LEqual supports
7700 buffers and strings.
7702 Switch/Case support: The emitted code for the LEqual() comparisons now
7704 the switch value as the first operand, not the second. The case value is
7706 the second operand, and this allows the case value to be implicitly
7707 converted to the type of the switch value, not the other way around.
7709 Switch/Case support: Temporary variables are now emitted immediately
7711 the control method, not at the global level. This means that there are now
7712 36 temps available per-method, not 36 temps per-module as was the case
7714 the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.)
7716 ----------------------------------------
7717 14 January 2005. Summary of changes for version 20050114:
7719 Added 2005 copyright to all module headers. This affects every module in
7720 the core subsystem, iASL compiler, and the utilities.
7722 1) ACPI CA Core Subsystem:
7724 Fixed an issue with the String-to-Buffer conversion code where the string
7725 null terminator was not included in the buffer after conversion, but there
7726 is existing ASL that assumes the string null terminator is included. This
7728 the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was
7729 introduced in the previous version when the code was updated to correctly
7730 set the converted buffer size as per the ACPI specification. The ACPI spec
7731 is ambiguous and will be updated to specify that the null terminator must
7733 included in the converted buffer. This also affects the ToBuffer() ASL
7736 Fixed a problem with the Mid() ASL/AML operator where it did not work
7737 correctly on Buffer objects. Newly created sub-buffers were not being
7742 Fixed a problem in AcpiTbFindTable where incorrect string compares were
7743 performed on the OemId and OemTableId table header fields. These fields
7745 not null terminated, so strncmp is now used instead of strcmp.
7747 Implemented a restriction on the Store() ASL/AML operator to align the
7748 behavior with the ACPI specification. Previously, any object could be
7750 as the source operand. Now, the only objects that may be used are
7752 Buffers, Strings, Packages, Object References, and DDB Handles. If
7753 necessary, the original behavior can be restored by enabling the
7754 EnableInterpreterSlack flag.
7756 Enhanced the optional "implicit return" support to allow an implicit
7758 value from methods that are invoked externally via the AcpiEvaluateObject
7759 interface. This enables implicit returns from the _STA and _INI methods,
7762 Changed the Revision() ASL/AML operator to return the current version of
7764 AML interpreter, in the YYYYMMDD format. Previously, it incorrectly
7766 the supported ACPI version (This is the function of the _REV method).
7768 Updated the _REV predefined method to return the currently supported
7772 Implemented batch mode option for the AcpiExec utility (-b).
7774 Code and Data Size: Current and previous core subsystem library sizes are
7775 shown below. These are the code and data sizes for the acpica.lib produced
7776 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
7777 any ACPI driver or OSPM code. The debug version of the code includes the
7778 debug output trace mechanism and has a much larger code and data size.
7780 that these values will vary depending on the efficiency of the compiler
7782 the compiler options used during generation.
7785 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
7786 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
7788 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
7789 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
7791 ----------------------------------------
7792 10 December 2004. Summary of changes for version 20041210:
7794 ACPI 3.0 support is nearing completion in both the iASL compiler and the
7795 ACPI CA core subsystem.
7797 1) ACPI CA Core Subsystem:
7799 Fixed a problem in the ToDecimalString operator where the resulting string
7800 length was incorrectly calculated. The length is now calculated exactly,
7801 eliminating incorrect AE_STRING_LIMIT exceptions.
7803 Fixed a problem in the ToHexString operator to allow a maximum 200
7805 string to be produced.
7807 Fixed a problem in the internal string-to-buffer and buffer-to-buffer copy
7808 routine where the length of the resulting buffer was not truncated to the
7809 new size (if the target buffer already existed).
7811 Code and Data Size: Current and previous core subsystem library sizes are
7812 shown below. These are the code and data sizes for the acpica.lib produced
7813 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
7814 any ACPI driver or OSPM code. The debug version of the code includes the
7815 debug output trace mechanism and has a much larger code and data size.
7817 that these values will vary depending on the efficiency of the compiler
7819 the compiler options used during generation.
7822 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
7823 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
7825 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
7826 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
7829 2) iASL Compiler/Disassembler:
7831 Implemented the new ACPI 3.0 resource template macros - DWordSpace,
7832 ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace.
7833 Includes support in the disassembler.
7835 Implemented support for the new (ACPI 3.0) parameter to the Register
7839 Fixed a problem where the _HE resource name for the Interrupt macro was
7840 referencing bit 0 instead of bit 1.
7842 Implemented check for maximum 255 interrupts in the Interrupt macro.
7844 Fixed a problem with the predefined resource descriptor names where
7845 incorrect AML code was generated if the offset within the resource buffer
7846 was 0 or 1. The optimizer shortened the AML code to a single byte opcode
7847 but did not update the surrounding package lengths.
7849 Changes to the Dma macro: All channels within the channel list must be in
7850 the range 0-7. Maximum 8 channels can be specified. BusMaster operand is
7851 optional (default is BusMaster).
7853 Implemented check for maximum 7 data bytes for the VendorShort macro.
7855 The ReadWrite parameter is now optional for the Memory32 and similar
7858 ----------------------------------------
7859 03 December 2004. Summary of changes for version 20041203:
7861 1) ACPI CA Core Subsystem:
7863 The low-level field insertion/extraction code (exfldio) has been
7865 rewritten to eliminate unnecessary complexity, bugs, and boundary
7868 Fixed a problem in the ToInteger, ToBuffer, ToHexString, and
7870 operators where the input operand could be inadvertently deleted if no
7871 conversion was necessary (e.g., if the input to ToInteger was an Integer
7874 Fixed a problem with the ToDecimalString and ToHexString where an
7876 exception code was returned if the resulting string would be > 200 chars.
7877 AE_STRING_LIMIT is now returned.
7879 Fixed a problem with the Concatenate operator where AE_OK was always
7880 returned, even if the operation failed.
7882 Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128
7883 semaphores to be allocated.
7885 Code and Data Size: Current and previous core subsystem library sizes are
7886 shown below. These are the code and data sizes for the acpica.lib produced
7887 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
7888 any ACPI driver or OSPM code. The debug version of the code includes the
7889 debug output trace mechanism and has a much larger code and data size.
7891 that these values will vary depending on the efficiency of the compiler
7893 the compiler options used during generation.
7896 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
7897 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
7899 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
7900 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
7903 2) iASL Compiler/Disassembler:
7905 Fixed typechecking for the ObjectType and SizeOf operators. Problem was
7906 recently introduced in 20041119.
7908 Fixed a problem with the ToUUID macro where the upper nybble of each
7910 byte was inadvertently set to zero.
7912 ----------------------------------------
7913 19 November 2004. Summary of changes for version 20041119:
7915 1) ACPI CA Core Subsystem:
7917 Fixed a problem in the internal ConvertToInteger routine where new
7919 were not truncated to 32 bits for 32-bit ACPI tables. This routine
7921 buffers and strings to integers.
7923 Implemented support to store a value to an Index() on a String object.
7925 is an ACPI 2.0 feature that had not yet been implemented.
7927 Implemented new behavior for storing objects to individual package
7929 (via the Index() operator). The previous behavior was to invoke the
7931 conversion rules if an object was already present at the index. The new
7932 behavior is to simply delete any existing object and directly store the
7934 object. Although the ACPI specification seems unclear on this subject,
7936 ACPI implementations behave in this manner. (This is the root of the
7937 AE_BAD_HEX_CONSTANT issue.)
7939 Modified the RSDP memory scan mechanism to support the extended checksum
7941 ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid
7942 RSDP signature is found with a valid checksum.
7944 Code and Data Size: Current and previous core subsystem library sizes are
7945 shown below. These are the code and data sizes for the acpica.lib produced
7946 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
7947 any ACPI driver or OSPM code. The debug version of the code includes the
7948 debug output trace mechanism and has a much larger code and data size.
7950 that these values will vary depending on the efficiency of the compiler
7952 the compiler options used during generation.
7955 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
7956 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
7958 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
7959 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
7962 2) iASL Compiler/Disassembler:
7964 Fixed a missing semicolon in the aslcompiler.y file.
7966 ----------------------------------------
7967 05 November 2004. Summary of changes for version 20041105:
7969 1) ACPI CA Core Subsystem:
7971 Implemented support for FADT revision 2. This was an interim table
7973 ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register.
7975 Implemented optional support to allow uninitialized LocalX and ArgX
7976 variables in a control method. The variables are initialized to an
7978 object with a value of zero. This support is enabled by setting the
7979 AcpiGbl_EnableInterpreterSlack flag to TRUE.
7981 Implemented support for Integer objects for the SizeOf operator. Either 4
7982 or 8 is returned, depending on the current integer size (32-bit or 64-bit,
7983 depending on the parent table revision).
7985 Fixed a problem in the implementation of the SizeOf and ObjectType
7987 where the operand was resolved to a value too early, causing incorrect
7988 return values for some objects.
7990 Fixed some possible memory leaks during exceptional conditions.
7992 Code and Data Size: Current and previous core subsystem library sizes are
7993 shown below. These are the code and data sizes for the acpica.lib produced
7994 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
7995 any ACPI driver or OSPM code. The debug version of the code includes the
7996 debug output trace mechanism and has a much larger code and data size.
7998 that these values will vary depending on the efficiency of the compiler
8000 the compiler options used during generation.
8003 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
8004 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
8006 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
8007 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
8010 2) iASL Compiler/Disassembler:
8012 Implemented support for all ACPI 3.0 reserved names and methods.
8014 Implemented all ACPI 3.0 grammar elements in the front-end, including
8015 support for semicolons.
8017 Implemented the ACPI 3.0 Function() and ToUUID() macros
8019 Fixed a problem in the disassembler where a Scope() operator would not be
8020 emitted properly if the target of the scope was in another table.
8022 ----------------------------------------
8023 15 October 2004. Summary of changes for version 20041015:
8025 Note: ACPI CA is currently undergoing an in-depth and complete formal
8026 evaluation to test/verify the following areas. Other suggestions are
8027 welcome. This will result in an increase in the frequency of releases and
8028 the number of bug fixes in the next few months.
8029 - Functional tests for all ASL/AML operators
8030 - All implicit/explicit type conversions
8031 - Bit fields and operation regions
8032 - 64-bit math support and 32-bit-only "truncated" math support
8033 - Exceptional conditions, both compiler and interpreter
8034 - Dynamic object deletion and memory leaks
8035 - ACPI 3.0 support when implemented
8036 - External interfaces to the ACPI subsystem
8039 1) ACPI CA Core Subsystem:
8041 Fixed two alignment issues on 64-bit platforms - within debug statements
8043 AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the
8045 field within the non-aligned ACPI generic address structure.
8047 Fixed a problem in the Increment and Decrement operators where incorrect
8048 operand resolution could result in the inadvertent modification of the
8049 original integer when the integer is passed into another method as an
8050 argument and the arg is then incremented/decremented.
8052 Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-
8054 BCD number were truncated during conversion.
8056 Fixed a problem in the ToDecimal operator where the length of the
8058 string could be set incorrectly too long if the input operand was a Buffer
8061 Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte
8063 within a buffer would prematurely terminate a compare between buffer
8066 Added a check for string overflow (>200 characters as per the ACPI
8067 specification) during the Concatenate operator with two string operands.
8069 Code and Data Size: Current and previous core subsystem library sizes are
8070 shown below. These are the code and data sizes for the acpica.lib produced
8071 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8072 any ACPI driver or OSPM code. The debug version of the code includes the
8073 debug output trace mechanism and has a much larger code and data size.
8075 that these values will vary depending on the efficiency of the compiler
8077 the compiler options used during generation.
8080 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
8081 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
8083 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
8084 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
8088 2) iASL Compiler/Disassembler:
8090 Allow the use of the ObjectType operator on uninitialized Locals and Args
8091 (returns 0 as per the ACPI specification).
8093 Fixed a problem where the compiler would fault if there was a syntax error
8094 in the FieldName of all of the various CreateXXXField operators.
8096 Disallow the use of lower case letters within the EISAID macro, as per the
8097 ACPI specification. All EISAID strings must be of the form "UUUNNNN"
8099 U is an uppercase letter and N is a hex digit.
8102 ----------------------------------------
8103 06 October 2004. Summary of changes for version 20041006:
8105 1) ACPI CA Core Subsystem:
8107 Implemented support for the ACPI 3.0 Timer operator. This ASL function
8108 implements a 64-bit timer with 100 nanosecond granularity.
8110 Defined a new OSL interface, AcpiOsGetTimer. This interface is used to
8111 implement the ACPI 3.0 Timer operator. This allows the host OS to
8113 the timer with the best clock available. Also, it keeps the core subsystem
8114 out of the clock handling business, since the host OS (usually) performs
8117 Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write)
8118 functions use a 64-bit address which is part of the packed ACPI Generic
8119 Address Structure. Since the structure is non-aligned, the alignment
8121 are now used to extract the address to a local variable before use.
8123 Fixed a problem where the ToInteger operator assumed all input strings
8125 hexadecimal. The operator now handles both decimal strings and hex strings
8126 (prefixed with "0x").
8128 Fixed a problem where the string length in the string object created as a
8129 result of the internal ConvertToString procedure could be incorrect. This
8130 potentially affected all implicit conversions and also the ToDecimalString
8131 and ToHexString operators.
8133 Fixed two problems in the ToString operator. If the length parameter was
8134 zero, an incorrect string object was created and the value of the input
8135 length parameter was inadvertently changed from zero to Ones.
8137 Fixed a problem where the optional ResourceSource string in the
8139 resource macro was ignored.
8141 Simplified the interfaces to the internal division functions, reducing
8143 size and complexity.
8145 Code and Data Size: Current and previous core subsystem library sizes are
8146 shown below. These are the code and data sizes for the acpica.lib produced
8147 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8148 any ACPI driver or OSPM code. The debug version of the code includes the
8149 debug output trace mechanism and has a much larger code and data size.
8151 that these values will vary depending on the efficiency of the compiler
8153 the compiler options used during generation.
8156 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
8157 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
8159 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
8160 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
8163 2) iASL Compiler/Disassembler:
8165 Implemented support for the ACPI 3.0 Timer operator.
8167 Fixed a problem where the Default() operator was inadvertently ignored in
8169 Switch/Case block. This was a problem in the translation of the Switch
8170 statement to If...Else pairs.
8172 Added support to allow a standalone Return operator, with no parentheses
8176 Fixed a problem with code generation for the ElseIf operator where the
8177 translated Else...If parse tree was improperly constructed leading to the
8180 ----------------------------------------
8181 22 September 2004. Summary of changes for version 20040922:
8183 1) ACPI CA Core Subsystem:
8185 Fixed a problem with the implementation of the LNot() operator where
8187 was not returned for the TRUE case. Changed the code to return Ones
8189 of (!Arg) which was usually 1. This change affects iASL constant folding
8193 Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was not
8194 initialized properly -- Now zero the entire buffer in this case where the
8195 buffer already exists.
8197 Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32
8198 Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all
8199 related code considerably. This will require changes/updates to all OS
8200 interface layers (OSLs.)
8202 Implemented a new external interface, AcpiInstallExceptionHandler, to
8204 a system exception handler to be installed. This handler is invoked upon
8206 run-time exception that occurs during control method execution.
8208 Added support for the DSDT in AcpiTbFindTable. This allows the
8209 DataTableRegion() operator to access the local copy of the DSDT.
8211 Code and Data Size: Current and previous core subsystem library sizes are
8212 shown below. These are the code and data sizes for the acpica.lib produced
8213 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8214 any ACPI driver or OSPM code. The debug version of the code includes the
8215 debug output trace mechanism and has a much larger code and data size.
8217 that these values will vary depending on the efficiency of the compiler
8219 the compiler options used during generation.
8222 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
8223 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
8225 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
8226 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
8229 2) iASL Compiler/Disassembler:
8231 Fixed a problem with constant folding and the LNot operator. LNot was
8232 returning 1 in the TRUE case, not Ones as per the ACPI specification. This
8233 could result in the generation of an incorrect folded/reduced constant.
8235 End-Of-File is now allowed within a "//"-style comment. A parse error no
8236 longer occurs if such a comment is at the very end of the input ASL source
8239 Implemented the "-r" option to override the Revision in the table header.
8240 The initial use of this option will be to simplify the evaluation of the
8242 interpreter by allowing a single ASL source module to be compiled for
8244 32-bit or 64-bit integers.
8247 ----------------------------------------
8248 27 August 2004. Summary of changes for version 20040827:
8250 1) ACPI CA Core Subsystem:
8252 - Implemented support for implicit object conversion in the non-numeric
8253 logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, and
8254 LNotEqual.) Any combination of Integers/Strings/Buffers may now be used;
8255 the second operand is implicitly converted on the fly to match the type of
8256 the first operand. For example:
8258 LEqual (Source1, Source2)
8260 Source1 and Source2 must each evaluate to an integer, a string, or a
8262 The data type of Source1 dictates the required type of Source2. Source2 is
8263 implicitly converted if necessary to match the type of Source1.
8265 - Updated and corrected the behavior of the string conversion support.
8267 rules concerning conversion of buffers to strings (according to the ACPI
8268 specification) are as follows:
8270 ToDecimalString - explicit byte-wise conversion of buffer to string of
8271 decimal values (0-255) separated by commas. ToHexString - explicit byte-
8273 conversion of buffer to string of hex values (0-FF) separated by commas.
8274 ToString - explicit byte-wise conversion of buffer to string. Byte-by-
8276 copy with no transform except NULL terminated. Any other implicit buffer-
8278 string conversion - byte-wise conversion of buffer to string of hex values
8279 (0-FF) separated by spaces.
8281 - Fixed typo in definition of AcpiGbl_EnableInterpreterSlack.
8283 - Fixed a problem in AcpiNsGetPathnameLength where the returned length was
8284 one byte too short in the case of a node in the root scope. This could
8285 cause a fault during debug output.
8287 - Code and Data Size: Current and previous core subsystem library sizes
8289 shown below. These are the code and data sizes for the acpica.lib
8291 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8292 any ACPI driver or OSPM code. The debug version of the code includes the
8293 debug output trace mechanism and has a much larger code and data size.
8295 that these values will vary depending on the efficiency of the compiler
8297 the compiler options used during generation.
8300 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
8301 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
8303 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
8304 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
8307 2) iASL Compiler/Disassembler:
8309 - Fixed a Linux generation error.
8312 ----------------------------------------
8313 16 August 2004. Summary of changes for version 20040816:
8315 1) ACPI CA Core Subsystem:
8317 Designed and implemented support within the AML interpreter for the so-
8318 called "implicit return". This support returns the result of the last ASL
8319 operation within a control method, in the absence of an explicit Return()
8320 operator. A few machines depend on this behavior, even though it is not
8321 explicitly supported by the ASL language. It is optional support that can
8322 be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag.
8324 Removed support for the PCI_Config address space from the internal low
8326 hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This
8327 support was not used internally, and would not work correctly anyway
8329 the PCI bus number and segment number were not supported. There are
8330 separate interfaces for PCI configuration space access because of the
8334 Code and Data Size: Current and previous core subsystem library sizes are
8335 shown below. These are the code and data sizes for the acpica.lib
8337 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8338 any ACPI driver or OSPM code. The debug version of the code includes the
8339 debug output trace mechanism and has a much larger code and data size.
8341 that these values will vary depending on the efficiency of the compiler
8343 the compiler options used during generation.
8346 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
8347 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
8349 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
8350 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
8353 2) iASL Compiler/Disassembler:
8355 Fixed a problem where constants in ASL expressions at the root level (not
8356 within a control method) could be inadvertently truncated during code
8357 generation. This problem was introduced in the 20040715 release.
8360 ----------------------------------------
8361 15 July 2004. Summary of changes for version 20040715:
8363 1) ACPI CA Core Subsystem:
8365 Restructured the internal HW GPE interfaces to pass/track the current
8367 of interrupts (enabled/disabled) in order to avoid possible deadlock and
8368 increase flexibility of the interfaces.
8370 Implemented a "lexicographical compare" for String and Buffer objects
8372 the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual --
8373 as per further clarification to the ACPI specification. Behavior is
8375 to C library "strcmp".
8377 Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable
8378 external function. In the 32-bit non-debug case, the stack use has been
8379 reduced from 168 bytes to 32 bytes.
8381 Deployed a new run-time configuration flag,
8382 AcpiGbl_EnableInterpreterSlack,
8383 whose purpose is to allow the AML interpreter to forgive certain bad AML
8384 constructs. Default setting is FALSE.
8386 Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field
8388 support code. If enabled, it allows field access to go beyond the end of
8390 region definition if the field is within the region length rounded up to
8392 next access width boundary (a common coding error.)
8394 Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to
8395 ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also,
8397 symbols are lowercased by the latest version of the AcpiSrc tool.
8399 The prototypes for the PCI interfaces in acpiosxf.h have been updated to
8400 rename "Register" to simply "Reg" to prevent certain compilers from
8403 Code and Data Size: Current and previous core subsystem library sizes are
8404 shown below. These are the code and data sizes for the acpica.lib
8406 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8407 any ACPI driver or OSPM code. The debug version of the code includes the
8408 debug output trace mechanism and has a much larger code and data size.
8410 that these values will vary depending on the efficiency of the compiler
8412 the compiler options used during generation.
8415 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
8416 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
8418 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
8419 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
8422 2) iASL Compiler/Disassembler:
8424 Implemented full support for Package objects within the Case() operator.
8425 Note: The Break() operator is currently not supported within Case blocks
8426 (TermLists) as there is some question about backward compatibility with
8431 Fixed a problem where complex terms were not supported properly within the
8434 Eliminated extraneous warning for compiler-emitted reserved names of the
8435 form "_T_x". (Used in Switch/Case operators.)
8437 Eliminated optimization messages for "_T_x" objects and small constants
8438 within the DefinitionBlock operator.
8441 ----------------------------------------
8442 15 June 2004. Summary of changes for version 20040615:
8444 1) ACPI CA Core Subsystem:
8446 Implemented support for Buffer and String objects (as per ACPI 2.0) for
8448 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
8451 All directory names in the entire source package are lower case, as they
8452 were in earlier releases.
8454 Implemented "Disassemble" command in the AML debugger that will
8456 a single control method.
8458 Code and Data Size: Current and previous core subsystem library sizes are
8459 shown below. These are the code and data sizes for the acpica.lib
8461 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8462 any ACPI driver or OSPM code. The debug version of the code includes the
8463 debug output trace mechanism and has a much larger code and data size.
8465 that these values will vary depending on the efficiency of the compiler
8467 the compiler options used during generation.
8470 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
8471 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
8474 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
8475 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
8478 2) iASL Compiler/Disassembler:
8480 Implemented support for Buffer and String objects (as per ACPI 2.0) for
8482 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
8485 All directory names in the entire source package are lower case, as they
8486 were in earlier releases.
8488 Fixed a fault when using the -g or -d<nofilename> options if the FADT was
8491 Fixed an issue with the Windows version of the compiler where later
8493 of Windows place the FADT in the registry under the name "FADT" and not
8494 "FACP" as earlier versions did. This applies when using the -g or -
8495 d<nofilename> options. The compiler now looks for both strings as
8498 Fixed a problem with compiler namepath optimization where a namepath
8500 the Scope() operator could not be optimized if the namepath was a subpath
8502 the current scope path.
8504 ----------------------------------------
8505 27 May 2004. Summary of changes for version 20040527:
8507 1) ACPI CA Core Subsystem:
8509 Completed a new design and implementation for EBDA (Extended BIOS Data
8511 support in the RSDP scan code. The original code improperly scanned for
8513 EBDA by simply scanning from memory location 0 to 0x400. The correct
8515 is to first obtain the EBDA pointer from within the BIOS data area, then
8516 scan 1K of memory starting at the EBDA pointer. There appear to be few if
8517 any machines that place the RSDP in the EBDA, however.
8519 Integrated a fix for a possible fault during evaluation of BufferField
8520 arguments. Obsolete code that was causing the problem was removed.
8522 Found and fixed a problem in the Field Support Code where data could be
8523 corrupted on a bit field read that starts on an aligned boundary but does
8524 not end on an aligned boundary. Merged the read/write "datum length"
8525 calculation code into a common procedure.
8527 Rolled in a couple of changes to the FreeBSD-specific header.
8530 Code and Data Size: Current and previous core subsystem library sizes are
8531 shown below. These are the code and data sizes for the acpica.lib
8533 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8534 any ACPI driver or OSPM code. The debug version of the code includes the
8535 debug output trace mechanism and has a much larger code and data size.
8537 that these values will vary depending on the efficiency of the compiler
8539 the compiler options used during generation.
8542 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
8543 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
8545 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
8546 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
8549 2) iASL Compiler/Disassembler:
8551 Fixed a generation warning produced by some overly-verbose compilers for a
8554 ----------------------------------------
8555 14 May 2004. Summary of changes for version 20040514:
8557 1) ACPI CA Core Subsystem:
8559 Fixed a problem where hardware GPE enable bits sometimes not set properly
8560 during and after GPE method execution. Result of 04/27 changes.
8562 Removed extra "clear all GPEs" when sleeping/waking.
8564 Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single
8565 AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above
8567 the new AcpiEv* calls as appropriate.
8569 ACPI_OS_NAME was removed from the OS-specific headers. The default name
8571 now "Microsoft Windows NT" for maximum compatibility. However this can be
8572 changed by modifying the acconfig.h file.
8574 Allow a single invocation of AcpiInstallNotifyHandler for a handler that
8575 traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag.
8577 Run _INI methods on ThermalZone objects. This is against the ACPI
8578 specification, but there is apparently ASL code in the field that has
8580 _INI methods, and apparently "other" AML interpreters execute them.
8582 Performed a full 16/32/64 bit lint that resulted in some small changes.
8584 Added a sleep simulation command to the AML debugger to test sleep code.
8586 Code and Data Size: Current and previous core subsystem library sizes are
8587 shown below. These are the code and data sizes for the acpica.lib
8589 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8590 any ACPI driver or OSPM code. The debug version of the code includes the
8591 debug output trace mechanism and has a much larger code and data size.
8593 that these values will vary depending on the efficiency of the compiler
8595 the compiler options used during generation.
8598 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
8599 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
8601 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
8602 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
8604 ----------------------------------------
8605 27 April 2004. Summary of changes for version 20040427:
8607 1) ACPI CA Core Subsystem:
8609 Completed a major overhaul of the GPE handling within ACPI CA. There are
8610 now three types of GPEs: wake-only, runtime-only, and combination
8612 The only GPEs allowed to be combination wake/run are for button-style
8613 devices such as a control-method power button, control-method sleep
8615 or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are
8617 referenced by any _PRW methods are marked for "runtime" and hardware
8618 enabled. Any GPE that is referenced by a _PRW method is marked for "wake"
8619 (and disabled at runtime). However, at sleep time, only those GPEs that
8620 have been specifically enabled for wake via the AcpiEnableGpe interface
8622 actually be hardware enabled.
8624 A new external interface has been added, AcpiSetGpeType(), that is meant
8626 be used by device drivers to force a GPE to a particular type. It will be
8627 especially useful for the drivers for the button devices mentioned above.
8629 Completed restructuring of the ACPI CA initialization sequence so that
8630 default operation region handlers are installed before GPEs are
8632 and the _PRW methods are executed. This will prevent errors when the _PRW
8633 methods attempt to access system memory or I/O space.
8635 GPE enable/disable no longer reads the GPE enable register. We now keep
8637 enable info for runtime and wake separate and in the GPE_EVENT_INFO. We
8638 thus no longer depend on the hardware to maintain these bits.
8640 Always clear the wake status and fixed/GPE status bits before sleep, even
8643 Improved the AML debugger output for displaying the GPE blocks and their
8646 Added new strings for the _OSI method, of the form "Windows 2001 SPx"
8650 Fixed a problem where the physical address was incorrectly calculated when
8651 the Load() operator was used to directly load from an Operation Region
8653 loading from a Field object.) Also added check for minimum table length
8657 Fix for multiple mutex acquisition. Restore original thread SyncLevel on
8660 Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for
8661 consistency with the other fields returned.
8663 Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such
8664 structure for each GPE in the system, so the size of this structure is
8667 CPU stack requirement reduction: Cleaned up the method execution and
8669 evaluation paths so that now a parameter structure is passed, instead of
8670 copying the various method parameters over and over again.
8672 In evregion.c: Correctly exit and reenter the interpreter region if and
8673 only if dispatching an operation region request to a user-installed
8675 Do not exit/reenter when dispatching to a default handler (e.g., default
8676 system memory or I/O handlers)
8679 Notes for updating drivers for the new GPE support. The following changes
8680 must be made to ACPI-related device drivers that are attached to one or
8682 GPEs: (This information will be added to the ACPI CA Programmer
8685 1) AcpiInstallGpeHandler no longer automatically enables the GPE, you must
8686 explicitly call AcpiEnableGpe.
8687 2) There is a new interface called AcpiSetGpeType. This should be called
8688 before enabling the GPE. Also, this interface will automatically disable
8689 the GPE if it is currently enabled.
8690 3) AcpiEnableGpe no longer supports a GPE type flag.
8692 Specific drivers that must be changed:
8694 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED,
8695 AeGpeHandler, NULL);
8696 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME);
8697 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR);
8699 2) Button Drivers (Power, Lid, Sleep):
8700 Run _PRW method under parent device
8701 If _PRW exists: /* This is a control-method button */
8702 Extract GPE number and possibly GpeDevice
8703 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN);
8704 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR);
8706 For all other devices that have _PRWs, we automatically set the GPE type
8708 ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. This
8709 must be done on a selective basis, usually requiring some kind of user app
8710 to allow the user to pick the wake devices.
8713 Code and Data Size: Current and previous core subsystem library sizes are
8714 shown below. These are the code and data sizes for the acpica.lib
8716 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8717 any ACPI driver or OSPM code. The debug version of the code includes the
8718 debug output trace mechanism and has a much larger code and data size.
8720 that these values will vary depending on the efficiency of the compiler
8722 the compiler options used during generation.
8725 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
8726 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
8729 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
8730 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
8734 ----------------------------------------
8735 02 April 2004. Summary of changes for version 20040402:
8737 1) ACPI CA Core Subsystem:
8739 Fixed an interpreter problem where an indirect store through an ArgX
8740 parameter was incorrectly applying the "implicit conversion rules" during
8741 the store. From the ACPI specification: "If the target is a method local
8743 argument (LocalX or ArgX), no conversion is performed and the result is
8744 stored directly to the target". The new behavior is to disable implicit
8745 conversion during ALL stores to an ArgX.
8747 Changed the behavior of the _PRW method scan to ignore any and all errors
8748 returned by a given _PRW. This prevents the scan from aborting from the
8749 failure of any single _PRW.
8751 Moved the runtime configuration parameters from the global init procedure
8753 static variables in acglobal.h. This will allow the host to override the
8754 default values easily.
8756 Code and Data Size: Current and previous core subsystem library sizes are
8757 shown below. These are the code and data sizes for the acpica.lib
8759 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8760 any ACPI driver or OSPM code. The debug version of the code includes the
8761 debug output trace mechanism and has a much larger code and data size.
8763 that these values will vary depending on the efficiency of the compiler
8765 the compiler options used during generation.
8768 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
8769 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
8771 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
8772 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
8775 2) iASL Compiler/Disassembler:
8777 iASL now fully disassembles SSDTs. However, External() statements are not
8778 generated automatically for unresolved symbols at this time. This is a
8779 planned feature for future implementation.
8781 Fixed a scoping problem in the disassembler that occurs when the type of
8783 target of a Scope() operator is overridden. This problem caused an
8784 incorrectly nested internal namespace to be constructed.
8786 Any warnings or errors that are emitted during disassembly are now
8788 out automatically so that the resulting file can be recompiled without any
8791 ----------------------------------------
8792 26 March 2004. Summary of changes for version 20040326:
8794 1) ACPI CA Core Subsystem:
8796 Implemented support for "wake" GPEs via interaction between GPEs and the
8797 _PRW methods. Every GPE that is pointed to by one or more _PRWs is
8798 identified as a WAKE GPE and by default will no longer be enabled at
8799 runtime. Previously, we were blindly enabling all GPEs with a
8801 _Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway.
8803 believe this has been the cause of thousands of "spurious" GPEs on some
8806 This new GPE behavior is can be reverted to the original behavior (enable
8807 ALL GPEs at runtime) via a runtime flag.
8809 Fixed a problem where aliased control methods could not access objects
8810 properly. The proper scope within the namespace was not initialized
8811 (transferred to the target of the aliased method) before executing the
8814 Fixed a potential race condition on internal object deletion on the return
8815 object in AcpiEvaluateObject.
8817 Integrated a fix for resource descriptors where both _MEM and _MTP were
8818 being extracted instead of just _MEM. (i.e. bitmask was incorrectly too
8819 wide, 0x0F instead of 0x03.)
8821 Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, preventing
8823 fault in some cases.
8825 Updated Notify() values for debug statements in evmisc.c
8827 Return proper status from AcpiUtMutexInitialize, not just simply AE_OK.
8829 Code and Data Size: Current and previous core subsystem library sizes are
8830 shown below. These are the code and data sizes for the acpica.lib
8832 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8833 any ACPI driver or OSPM code. The debug version of the code includes the
8834 debug output trace mechanism and has a much larger code and data size.
8836 that these values will vary depending on the efficiency of the compiler
8838 the compiler options used during generation.
8842 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
8843 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
8845 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
8846 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
8848 ----------------------------------------
8849 11 March 2004. Summary of changes for version 20040311:
8851 1) ACPI CA Core Subsystem:
8853 Fixed a problem where errors occurring during the parse phase of control
8854 method execution did not abort cleanly. For example, objects created and
8855 installed in the namespace were not deleted. This caused all subsequent
8856 invocations of the method to return the AE_ALREADY_EXISTS exception.
8858 Implemented a mechanism to force a control method to "Serialized"
8860 if the method attempts to create namespace objects. (The root of the
8861 AE_ALREADY_EXISTS problem.)
8863 Implemented support for the predefined _OSI "internal" control method.
8864 Initial supported strings are "Linux", "Windows 2000", "Windows 2001", and
8865 "Windows 2001.1", and can be easily upgraded for new strings as necessary.
8866 This feature will allow "other" operating systems to execute the fully
8867 tested, "Windows" code path through the ASL code
8869 Global Lock Support: Now allows multiple acquires and releases with any
8870 internal thread. Removed concept of "owning thread" for this special
8873 Fixed two functions that were inappropriately declaring large objects on
8875 CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage
8877 method execution considerably.
8879 Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the
8880 S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT.
8882 Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs
8883 defined on the machine.
8885 Implemented two runtime options: One to force all control method
8887 to "Serialized" to mimic Windows behavior, another to disable _OSI support
8888 if it causes problems on a given machine.
8890 Code and Data Size: Current and previous core subsystem library sizes are
8891 shown below. These are the code and data sizes for the acpica.lib
8893 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8894 any ACPI driver or OSPM code. The debug version of the code includes the
8895 debug output trace mechanism and has a much larger code and data size.
8897 that these values will vary depending on the efficiency of the compiler
8899 the compiler options used during generation.
8902 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
8903 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
8905 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
8906 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
8908 2) iASL Compiler/Disassembler:
8910 Fixed an array size problem for FreeBSD that would cause the compiler to
8913 ----------------------------------------
8914 20 February 2004. Summary of changes for version 20040220:
8917 1) ACPI CA Core Subsystem:
8919 Implemented execution of _SxD methods for Device objects in the
8920 GetObjectInfo interface.
8922 Fixed calls to _SST method to pass the correct arguments.
8924 Added a call to _SST on wake to restore to "working" state.
8926 Check for End-Of-Buffer failure case in the WalkResources interface.
8928 Integrated fix for 64-bit alignment issue in acglobal.h by moving two
8929 structures to the beginning of the file.
8931 After wake, clear GPE status register(s) before enabling GPEs.
8933 After wake, clear/enable power button. (Perhaps we should clear/enable
8935 fixed events upon wake.)
8937 Fixed a couple of possible memory leaks in the Namespace manager.
8939 Integrated latest acnetbsd.h file.
8941 ----------------------------------------
8942 11 February 2004. Summary of changes for version 20040211:
8945 1) ACPI CA Core Subsystem:
8947 Completed investigation and implementation of the call-by-reference
8948 mechanism for control method arguments.
8950 Fixed a problem where a store of an object into an indexed package could
8951 fail if the store occurs within a different method than the method that
8952 created the package.
8954 Fixed a problem where the ToDecimal operator could return incorrect
8957 Fixed a problem where the CopyObject operator could fail on some of the
8959 obscure objects (e.g., Reference objects.)
8961 Improved the output of the Debug object to display buffer, package, and
8964 Fixed a problem where constructs of the form "RefOf (ArgX)" did not return
8965 the expected result.
8967 Added permanent ACPI_REPORT_ERROR macros for all instances of the
8968 ACPI_AML_INTERNAL exception.
8970 Integrated latest version of acfreebsd.h
8972 ----------------------------------------
8973 16 January 2004. Summary of changes for version 20040116:
8975 The purpose of this release is primarily to update the copyright years in
8976 each module, thus causing a huge number of diffs. There are a few small
8977 functional changes, however.
8979 1) ACPI CA Core Subsystem:
8981 Improved error messages when there is a problem finding one or more of the
8982 required base ACPI tables
8984 Reintroduced the definition of APIC_HEADER in actbl.h
8986 Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h)
8988 Removed extraneous reference to NewObj in dsmthdat.c
8992 Fixed a problem introduced in December that disabled the correct
8994 of Resource Templates
8997 ----------------------------------------
8998 03 December 2003. Summary of changes for version 20031203:
9000 1) ACPI CA Core Subsystem:
9002 Changed the initialization of Operation Regions during subsystem
9003 init to perform two entire walks of the ACPI namespace; The first
9004 to initialize the regions themselves, the second to execute the
9005 _REG methods. This fixed some interdependencies across _REG
9006 methods found on some machines.
9008 Fixed a problem where a Store(Local0, Local1) could simply update
9009 the object reference count, and not create a new copy of the
9010 object if the Local1 is uninitialized.
9012 Implemented support for the _SST reserved method during sleep
9015 Implemented support to clear the SLP_TYP and SLP_EN bits when
9016 waking up, this is apparently required by some machines.
9018 When sleeping, clear the wake status only if SleepState is not S5.
9020 Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect
9021 pointer arithmetic advanced a string pointer too far.
9023 Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer
9024 could be returned if the requested table has not been loaded.
9026 Within the support for IRQ resources, restructured the handling of
9027 the active and edge/level bits.
9029 Fixed a few problems in AcpiPsxExecute() where memory could be
9030 leaked under certain error conditions.
9032 Improved error messages for the cases where the ACPI mode could
9035 Code and Data Size: Current and previous core subsystem library
9036 sizes are shown below. These are the code and data sizes for the
9037 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
9038 these values do not include any ACPI driver or OSPM code. The
9039 debug version of the code includes the debug output trace
9040 mechanism and has a much larger code and data size. Note that
9041 these values will vary depending on the efficiency of the compiler
9042 and the compiler options used during generation.
9044 Previous Release (20031029):
9045 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
9046 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
9048 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
9049 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
9051 2) iASL Compiler/Disassembler:
9053 Implemented a fix for the iASL disassembler where a bad index was
9054 generated. This was most noticeable on 64-bit platforms
9057 ----------------------------------------
9058 29 October 2003. Summary of changes for version 20031029:
9060 1) ACPI CA Core Subsystem:
9063 Fixed a problem where a level-triggered GPE with an associated
9064 _Lxx control method was incorrectly cleared twice.
9066 Fixed a problem with the Field support code where an access can
9067 occur beyond the end-of-region if the field is non-aligned but
9068 extends to the very end of the parent region (resulted in an
9069 AE_AML_REGION_LIMIT exception.)
9071 Fixed a problem with ACPI Fixed Events where an RT Clock handler
9072 would not get invoked on an RTC event. The RTC event bitmasks for
9073 the PM1 registers were not being initialized properly.
9075 Implemented support for executing _STA and _INI methods for
9076 Processor objects. Although this is currently not part of the
9077 ACPI specification, there is existing ASL code that depends on the
9078 init-time execution of these methods.
9080 Implemented and deployed a GetDescriptorName function to decode
9081 the various types of internal descriptors. Guards against null
9082 descriptors during debug output also.
9084 Implemented and deployed a GetNodeName function to extract the 4-
9085 character namespace node name. This function simplifies the debug
9086 and error output, as well as guarding against null pointers during
9089 Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to
9090 simplify the debug and error output of 64-bit integers. This
9091 macro replaces the HIDWORD and LODWORD macros for dumping these
9094 Updated the implementation of the Stall() operator to only call
9095 AcpiOsStall(), and also return an error if the operand is larger
9096 than 255. This preserves the required behavior of not
9097 relinquishing the processor, as would happen if AcpiOsSleep() was
9098 called for "long stalls".
9100 Constructs of the form "Store(LocalX,LocalX)" where LocalX is not
9101 initialized are now treated as NOOPs.
9103 Cleaned up a handful of warnings during 64-bit generation.
9105 Fixed a reported error where and incorrect GPE number was passed
9106 to the GPE dispatch handler. This value is only used for error
9107 output, however. Used this opportunity to clean up and streamline
9108 the GPE dispatch code.
9110 Code and Data Size: Current and previous core subsystem library
9111 sizes are shown below. These are the code and data sizes for the
9112 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
9113 these values do not include any ACPI driver or OSPM code. The
9115 debug version of the code includes the debug output trace
9116 mechanism and has a much larger code and data size. Note that
9117 these values will vary depending on the efficiency of the compiler
9118 and the compiler options used during generation.
9120 Previous Release (20031002):
9121 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
9122 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
9124 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
9125 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
9128 2) iASL Compiler/Disassembler:
9130 Updated the iASL compiler to return an error if the operand to the
9131 Stall() operator is larger than 255.
9134 ----------------------------------------
9135 02 October 2003. Summary of changes for version 20031002:
9138 1) ACPI CA Core Subsystem:
9140 Fixed a problem with Index Fields where the index was not
9141 incremented for fields that require multiple writes to the
9142 index/data registers (Fields that are wider than the data
9145 Fixed a problem with all Field objects where a write could go
9146 beyond the end-of-field if the field was larger than the access
9147 granularity and therefore required multiple writes to complete the
9148 request. An extra write beyond the end of the field could happen
9151 Fixed a problem with Index Fields where a BUFFER_OVERFLOW error
9152 would incorrectly be returned if the width of the Data Register
9153 was larger than the specified field access width.
9155 Completed fixes for LoadTable() and Unload() and verified their
9156 operation. Implemented full support for the "DdbHandle" object
9157 throughout the ACPI CA subsystem.
9159 Implemented full support for the MADT and ECDT tables in the ACPI
9160 CA header files. Even though these tables are not directly
9161 consumed by ACPI CA, the header definitions are useful for ACPI
9164 Integrated resource descriptor fixes posted to the Linux ACPI
9165 list. This included checks for minimum descriptor length, and
9166 support for trailing NULL strings within descriptors that have
9167 optional string elements.
9169 Code and Data Size: Current and previous core subsystem library
9170 sizes are shown below. These are the code and data sizes for the
9171 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
9172 these values do not include any ACPI driver or OSPM code. The
9173 debug version of the code includes the debug output trace
9174 mechanism and has a much larger code and data size. Note that
9175 these values will vary depending on the efficiency of the compiler
9176 and the compiler options used during generation.
9178 Previous Release (20030918):
9179 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
9180 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
9182 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
9183 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
9188 Implemented detection of non-ASCII characters within the input
9189 source ASL file. This catches attempts to compile binary (AML)
9190 files early in the compile, with an informative error message.
9192 Fixed a problem where the disassembler would fault if the output
9193 filename could not be generated or if the output file could not be
9196 ----------------------------------------
9197 18 September 2003. Summary of changes for version 20030918:
9200 1) ACPI CA Core Subsystem:
9202 Found and fixed a longstanding problem with the late execution of
9203 the various deferred AML opcodes (such as Operation Regions,
9204 Buffer Fields, Buffers, and Packages). If the name string
9205 specified for the name of the new object placed the object in a
9206 scope other than the current scope, the initialization/execution
9207 of the opcode failed. The solution to this problem was to
9208 implement a mechanism where the late execution of such opcodes
9209 does not attempt to lookup/create the name a second time in an
9210 incorrect scope. This fixes the "region size computed
9211 incorrectly" problem.
9213 Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a
9214 Global Lock AE_BAD_PARAMETER error.
9216 Fixed several 64-bit issues with prototypes, casting and data
9219 Removed duplicate prototype from acdisasm.h
9221 Fixed an issue involving EC Operation Region Detach (Shaohua Li)
9223 Code and Data Size: Current and previous core subsystem library
9224 sizes are shown below. These are the code and data sizes for the
9225 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
9226 these values do not include any ACPI driver or OSPM code. The
9227 debug version of the code includes the debug output trace
9228 mechanism and has a much larger code and data size. Note that
9229 these values will vary depending on the efficiency of the compiler
9230 and the compiler options used during generation.
9234 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
9235 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
9237 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
9238 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
9243 Fixed the AcpiOsSleep implementation in osunixxf.c to pass the
9244 correct sleep time in seconds.
9246 ----------------------------------------
9247 14 July 2003. Summary of changes for version 20030619:
9249 1) ACPI CA Core Subsystem:
9251 Parse SSDTs in order discovered, as opposed to reverse order
9254 Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas
9261 Dynamically allocate SDT list (suggested by Andi Kleen)
9263 proc function return value cleanups (Andi Kleen)
9265 Correctly handle NMI watchdog during long stalls (Andrew Morton)
9267 Make it so acpismp=force works (reported by Andrew Morton)
9270 ----------------------------------------
9271 19 June 2003. Summary of changes for version 20030619:
9273 1) ACPI CA Core Subsystem:
9275 Fix To/FromBCD, eliminating the need for an arch-specific #define.
9277 Do not acquire a semaphore in the S5 shutdown path.
9279 Fix ex_digits_needed for 0. (Takayoshi Kochi)
9281 Fix sleep/stall code reversal. (Andi Kleen)
9283 Revert a change having to do with control method calling
9288 acpiphp update (Takayoshi Kochi)
9290 Export acpi_disabled for sonypi (Stelian Pop)
9292 Mention acpismp=force in config help
9294 Re-add acpitable.c and acpismp=force. This improves backwards
9296 compatibility and also cleans up the code to a significant degree.
9298 Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge)
9300 ----------------------------------------
9301 22 May 2003. Summary of changes for version 20030522:
9303 1) ACPI CA Core Subsystem:
9305 Found and fixed a reported problem where an AE_NOT_FOUND error
9306 occurred occasionally during _BST evaluation. This turned out to
9307 be an Owner ID allocation issue where a called method did not get
9308 a new ID assigned to it. Eventually, (after 64k calls), the Owner
9309 ID UINT16 would wraparound so that the ID would be the same as the
9310 caller's and the called method would delete the caller's
9313 Implemented extended error reporting for control methods that are
9314 aborted due to a run-time exception. Output includes the exact
9315 AML instruction that caused the method abort, a dump of the method
9316 locals and arguments at the time of the abort, and a trace of all
9317 nested control method calls.
9319 Modified the interpreter to allow the creation of buffers of zero
9320 length from the AML code. Implemented new code to ensure that no
9321 attempt is made to actually allocate a memory buffer (of length
9322 zero) - instead, a simple buffer object with a NULL buffer pointer
9323 and length zero is created. A warning is no longer issued when
9324 the AML attempts to create a zero-length buffer.
9326 Implemented a workaround for the "leading asterisk issue" in
9327 _HIDs, _UIDs, and _CIDs in the AML interpreter. One leading
9328 asterisk is automatically removed if present in any HID, UID, or
9329 CID strings. The iASL compiler will still flag this asterisk as
9332 Implemented full support for _CID methods that return a package of
9333 multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface
9334 now additionally returns a device _CID list if present. This
9335 required a change to the external interface in order to pass an
9336 ACPI_BUFFER object as a parameter since the _CID list is of
9339 Fixed a problem with the new AE_SAME_HANDLER exception where
9340 handler initialization code did not know about this exception.
9342 Code and Data Size: Current and previous core subsystem library
9343 sizes are shown below. These are the code and data sizes for the
9344 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
9345 these values do not include any ACPI driver or OSPM code. The
9346 debug version of the code includes the debug output trace
9347 mechanism and has a much larger code and data size. Note that
9348 these values will vary depending on the efficiency of the compiler
9349 and the compiler options used during generation.
9351 Previous Release (20030509):
9352 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
9353 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
9355 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
9356 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
9361 Fixed a bug in which we would reinitialize the ACPI interrupt
9362 after it was already working, thus disabling all ACPI and the IRQs
9363 for any other device sharing the interrupt. (Thanks to Stian
9366 Toshiba driver update (John Belmonte)
9368 Return only 0 or 1 for our interrupt handler status (Andrew
9374 Fixed a reported problem where multiple (nested) ElseIf()
9375 statements were not handled correctly by the compiler, resulting
9376 in incorrect warnings and incorrect AML code. This was a problem
9377 in both the ASL parser and the code generator.
9382 Added changes to existing interfaces, new exception codes, and new
9383 text concerning reference count object management versus garbage
9386 ----------------------------------------
9387 09 May 2003. Summary of changes for version 20030509.
9390 1) ACPI CA Core Subsystem:
9392 Changed the subsystem initialization sequence to hold off
9393 installation of address space handlers until the hardware has been
9394 initialized and the system has entered ACPI mode. This is because
9395 the installation of space handlers can cause _REG methods to be
9396 run. Previously, the _REG methods could potentially be run before
9397 ACPI mode was enabled.
9399 Fixed some memory leak issues related to address space handler and
9400 notify handler installation. There were some problems with the
9401 reference count mechanism caused by the fact that the handler
9402 objects are shared across several namespace objects.
9404 Fixed a reported problem where reference counts within the
9405 namespace were not properly updated when named objects created by
9406 method execution were deleted.
9408 Fixed a reported problem where multiple SSDTs caused a deletion
9409 issue during subsystem termination. Restructured the table data
9410 structures to simplify the linked lists and the related code.
9412 Fixed a problem where the table ID associated with secondary
9413 tables (SSDTs) was not being propagated into the namespace objects
9414 created by those tables. This would only present a problem for
9415 tables that are unloaded at run-time, however.
9417 Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE
9418 type as the length parameter (instead of UINT32).
9420 Solved a long-standing problem where an ALREADY_EXISTS error
9421 appears on various systems. This problem could happen when there
9422 are multiple PCI_Config operation regions under a single PCI root
9423 bus. This doesn't happen very frequently, but there are some
9424 systems that do this in the ASL.
9426 Fixed a reported problem where the internal DeleteNode function
9427 was incorrectly handling the case where a namespace node was the
9428 first in the parent's child list, and had additional peers (not
9429 the only child, but first in the list of children.)
9431 Code and Data Size: Current core subsystem library sizes are shown
9432 below. These are the code and data sizes for the acpica.lib
9433 produced by the Microsoft Visual C++ 6.0 compiler, and these
9434 values do not include any ACPI driver or OSPM code. The debug
9435 version of the code includes the debug output trace mechanism and
9436 has a much larger code and data size. Note that these values will
9437 vary depending on the efficiency of the compiler and the compiler
9438 options used during generation.
9441 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
9442 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
9444 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
9445 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
9450 Allow ":" in OS override string (Ducrot Bruno)
9452 Kobject fix (Greg KH)
9455 3 iASL Compiler/Disassembler:
9457 Fixed a problem in the generation of the C source code files (AML
9458 is emitted in C source statements for BIOS inclusion) where the
9459 Ascii dump that appears within a C comment at the end of each line
9460 could cause a compile time error if the AML sequence happens to
9461 have an open comment or close comment sequence embedded.
9464 ----------------------------------------
9465 24 April 2003. Summary of changes for version 20030424.
9468 1) ACPI CA Core Subsystem:
9470 Support for big-endian systems has been implemented. Most of the
9471 support has been invisibly added behind big-endian versions of the
9474 Fixed a problem in AcpiHwDisableGpeBlock() and
9475 AcpiHwClearGpeBlock() where an incorrect offset was passed to the
9476 low level hardware write routine. The offset parameter was
9477 actually eliminated from the low level read/write routines because
9478 they had become obsolete.
9480 Fixed a problem where a handler object was deleted twice during
9481 the removal of a fixed event handler.
9486 A fix for SMP systems with link devices was contributed by
9490 (2.5) Return whether we handled the interrupt in our IRQ handler.
9491 (Linux ISRs no longer return void, so we can propagate the handler
9492 return value from the ACPI CA core back to the OS.)
9498 The ACPI CA Programmer Reference has been updated to reflect new
9499 interfaces and changes to existing interfaces.
9501 ----------------------------------------
9502 28 March 2003. Summary of changes for version 20030328.
9504 1) ACPI CA Core Subsystem:
9506 The GPE Block Device support has been completed. New interfaces
9507 are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event
9508 interfaces (enable, disable, clear, getstatus) have been split
9509 into separate interfaces for Fixed Events and General Purpose
9510 Events (GPEs) in order to support GPE Block Devices properly.
9512 Fixed a problem where the error message "Failed to acquire
9513 semaphore" would appear during operations on the embedded
9516 Code and Data Size: Current core subsystem library sizes are shown
9517 below. These are the code and data sizes for the acpica.lib
9518 produced by the Microsoft Visual C++ 6.0 compiler, and these
9519 values do not include any ACPI driver or OSPM code. The debug
9520 version of the code includes the debug output trace mechanism and
9521 has a much larger code and data size. Note that these values will
9522 vary depending on the efficiency of the compiler and the compiler
9523 options used during generation.
9526 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
9527 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
9529 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
9530 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
9533 ----------------------------------------
9534 28 February 2003. Summary of changes for version 20030228.
9537 1) ACPI CA Core Subsystem:
9539 The GPE handling and dispatch code has been completely overhauled
9540 in preparation for support of GPE Block Devices (ID ACPI0006).
9541 This affects internal data structures and code only; there should
9542 be no differences visible externally. One new file has been
9545 The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only
9546 fields that are used to determine the GPE block lengths. The
9547 REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address
9548 structures are ignored. This is per the ACPI specification but it
9549 isn't very clear. The full 256 Block 0/1 GPEs are now supported
9550 (the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128).
9552 In the SCI interrupt handler, removed the read of the PM1_CONTROL
9553 register to look at the SCI_EN bit. On some machines, this read
9554 causes an SMI event and greatly slows down SCI events. (This may
9555 in fact be the cause of slow battery status response on some
9558 Fixed a problem where a store of a NULL string to a package object
9559 could cause the premature deletion of the object. This was seen
9560 during execution of the battery _BIF method on some systems,
9561 resulting in no battery data being returned.
9563 Added AcpiWalkResources interface to simplify parsing of resource
9566 Code and Data Size: Current core subsystem library sizes are shown
9567 below. These are the code and data sizes for the acpica.lib
9568 produced by the Microsoft Visual C++ 6.0 compiler, and these
9569 values do not include any ACPI driver or OSPM code. The debug
9570 version of the code includes the debug output trace mechanism and
9571 has a much larger code and data size. Note that these values will
9572 vary depending on the efficiency of the compiler and the compiler
9573 options used during generation.
9576 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
9577 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
9579 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
9580 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
9585 S3 fixes (Ole Rohne)
9587 Update ACPI PHP driver with to use new acpi_walk_resource API
9590 Add S4BIOS support (Pavel Machek)
9592 Map in entire table before performing checksum (John Stultz)
9594 Expand the mem= cmdline to allow the specification of reserved and
9595 ACPI DATA blocks (Pavel Machek)
9597 Never use ACPI on VISWS
9599 Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez)
9601 Revert a change that allowed P_BLK lengths to be 4 or 5. This is
9602 causing us to think that some systems support C2 when they really
9605 Do not count processor objects for non-present CPUs (Thanks to
9611 Fixed a problem where ASL include files could not be found and
9614 Added support for the _PDC reserved name.
9617 ----------------------------------------
9618 22 January 2003. Summary of changes for version 20030122.
9621 1) ACPI CA Core Subsystem:
9623 Added a check for constructs of the form: Store (Local0, Local0)
9624 where Local0 is not initialized. Apparently, some BIOS
9625 programmers believe that this is a NOOP. Since this store doesn't
9626 do anything anyway, the new prototype behavior will ignore this
9627 error. This is a case where we can relax the strict checking in
9628 the interpreter in the name of compatibility.
9633 The AcpiSrc Source Conversion Utility has been released with the
9634 Linux package for the first time. This is the utility that is
9635 used to convert the ACPI CA base source code to the Linux version.
9637 (Both) Handle P_BLK lengths shorter than 6 more gracefully
9639 (Both) Move more headers to include/acpi, and delete an unused
9642 (Both) Move drivers/acpi/include directory to include/acpi
9644 (Both) Boot functions don't use cmdline, so don't pass it around
9646 (Both) Remove include of unused header (Adrian Bunk)
9648 (Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since
9650 former now also includes the latter, acpiphp.h only needs the one,
9653 (2.5) Make it possible to select method of bios restoring after S3
9654 resume. [=> no more ugly ifdefs] (Pavel Machek)
9656 (2.5) Make proc write interfaces work (Pavel Machek)
9658 (2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski)
9660 (2.5) Break out ACPI Perf code into its own module, under cpufreq
9663 (2.4) S4BIOS support (Ducrot Bruno)
9665 (2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio
9671 Added support to disassemble SSDT and PSDTs.
9673 Implemented support to obtain SSDTs from the Windows registry if
9677 ----------------------------------------
9678 09 January 2003. Summary of changes for version 20030109.
9680 1) ACPI CA Core Subsystem:
9682 Changed the behavior of the internal Buffer-to-String conversion
9683 function. The current ACPI specification states that the contents
9684 of the buffer are "converted to a string of two-character
9685 hexadecimal numbers, each separated by a space". Unfortunately,
9686 this definition is not backwards compatible with existing ACPI 1.0
9687 implementations (although the behavior was not defined in the ACPI
9688 1.0 specification). The new behavior simply copies data from the
9689 buffer to the string until a null character is found or the end of
9690 the buffer is reached. The new String object is always null
9691 terminated. This problem was seen during the generation of _BIF
9692 battery data where incorrect strings were returned for battery
9693 type, etc. This will also require an errata to the ACPI
9696 Renamed all instances of NATIVE_UINT and NATIVE_INT to
9697 ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively.
9699 Copyright in all module headers (both Linux and non-Linux) has be
9702 Code and Data Size: Current core subsystem library sizes are shown
9703 below. These are the code and data sizes for the acpica.lib
9704 produced by the Microsoft Visual C++ 6.0 compiler, and these
9705 values do not include any ACPI driver or OSPM code. The debug
9706 version of the code includes the debug output trace mechanism and
9707 has a much larger code and data size. Note that these values will
9708 vary depending on the efficiency of the compiler and the compiler
9709 options used during generation.
9712 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
9713 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
9715 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
9716 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
9721 Fixed an oops on module insertion/removal (Matthew Tippett)
9723 (2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante)
9725 (2.5) Replace pr_debug (Randy Dunlap)
9727 (2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski)
9729 (Both) Eliminate spawning of thread from timer callback, in favor
9732 (Both) Show Lid status in /proc (Zdenek OGAR Skalak)
9734 (Both) Added define for Fixed Function HW region (Matthew Wilcox)
9736 (Both) Add missing statics to button.c (Pavel Machek)
9738 Several changes have been made to the source code translation
9739 utility that generates the Linux Code in order to make the code
9742 All typedefs on structs and unions have been removed in keeping
9743 with the Linux coding style.
9745 Removed the non-Linux SourceSafe module revision number from each
9748 Completed major overhaul of symbols to be lowercased for linux.
9749 Doubled the number of symbols that are lowercased.
9751 Fixed a problem where identifiers within procedure headers and
9752 within quotes were not fully lower cased (they were left with a
9755 Some C macros whose only purpose is to allow the generation of 16-
9756 bit code are now completely removed in the Linux code, increasing
9757 readability and maintainability.
9759 ----------------------------------------
9761 12 December 2002. Summary of changes for version 20021212.
9764 1) ACPI CA Core Subsystem:
9766 Fixed a problem where the creation of a zero-length AML Buffer
9767 would cause a fault.
9769 Fixed a problem where a Buffer object that pointed to a static AML
9770 buffer (in an ACPI table) could inadvertently be deleted, causing
9773 Fixed a problem where a user buffer (passed in to the external
9774 ACPI CA interfaces) could be overwritten if the buffer was too
9775 small to complete the operation, causing memory corruption.
9777 Fixed a problem in the Buffer-to-String conversion code where a
9778 string of length one was always returned, regardless of the size
9779 of the input Buffer object.
9781 Removed the NATIVE_CHAR data type across the entire source due to
9782 lack of need and lack of consistent use.
9784 Code and Data Size: Current core subsystem library sizes are shown
9785 below. These are the code and data sizes for the acpica.lib
9786 produced by the Microsoft Visual C++ 6.0 compiler, and these
9787 values do not include any ACPI driver or OSPM code. The debug
9788 version of the code includes the debug output trace mechanism and
9789 has a much larger code and data size. Note that these values will
9790 vary depending on the efficiency of the compiler and the compiler
9791 options used during generation.
9794 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
9795 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
9797 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
9798 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
9801 ----------------------------------------
9802 05 December 2002. Summary of changes for version 20021205.
9804 1) ACPI CA Core Subsystem:
9806 Fixed a problem where a store to a String or Buffer object could
9807 cause corruption of the DSDT if the object type being stored was
9808 the same as the target object type and the length of the object
9809 being stored was equal to or smaller than the original (existing)
9810 target object. This was seen to cause corruption of battery _BIF
9811 buffers if the _BIF method modified the buffer on the fly.
9813 Fixed a problem where an internal error was generated if a control
9814 method invocation was used in an OperationRegion, Buffer, or
9815 Package declaration. This was caused by the deferred parsing of
9816 the control method and thus the deferred creation of the internal
9817 method object. The solution to this problem was to create the
9818 internal method object at the moment the method is encountered in
9819 the first pass - so that subsequent references to the method will
9820 able to obtain the required parameter count and thus properly
9821 parse the method invocation. This problem presented itself as an
9822 AE_AML_INTERNAL during the pass 1 parse phase during table load.
9824 Fixed a problem where the internal String object copy routine did
9825 not always allocate sufficient memory for the target String object
9826 and caused memory corruption. This problem was seen to cause
9827 "Allocation already present in list!" errors as memory allocation
9830 Implemented a new function for the evaluation of namespace objects
9831 that allows the specification of the allowable return object
9832 types. This simplifies a lot of code that checks for a return
9833 object of one or more specific objects returned from the
9834 evaluation (such as _STA, etc.) This may become and external
9835 function if it would be useful to ACPI-related drivers.
9837 Completed another round of prefixing #defines with "ACPI_" for
9840 Completed additional code restructuring to allow more modular
9841 linking for iASL compiler and AcpiExec. Several files were split
9842 creating new files. New files: nsparse.c dsinit.c evgpe.c
9844 Implemented an abort mechanism to terminate an executing control
9845 method via the AML debugger. This feature is useful for debugging
9846 control methods that depend (wait) for specific hardware
9849 Code and Data Size: Current core subsystem library sizes are shown
9850 below. These are the code and data sizes for the acpica.lib
9851 produced by the Microsoft Visual C++ 6.0 compiler, and these
9852 values do not include any ACPI driver or OSPM code. The debug
9853 version of the code includes the debug output trace mechanism and
9854 has a much larger code and data size. Note that these values will
9855 vary depending on the efficiency of the compiler and the compiler
9856 options used during generation.
9859 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
9860 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
9862 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
9863 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
9866 2) iASL Compiler/Disassembler
9868 Fixed a compiler code generation problem for "Interrupt" Resource
9869 Descriptors. If specified in the ASL, the optional "Resource
9870 Source Index" and "Resource Source" fields were not inserted into
9871 the correct location within the AML resource descriptor, creating
9872 an invalid descriptor.
9874 Fixed a disassembler problem for "Interrupt" resource descriptors.
9875 The optional "Resource Source Index" and "Resource Source" fields
9879 ----------------------------------------
9880 22 November 2002. Summary of changes for version 20021122.
9883 1) ACPI CA Core Subsystem:
9885 Fixed a reported problem where an object stored to a Method Local
9886 or Arg was not copied to a new object during the store - the
9887 object pointer was simply copied to the Local/Arg. This caused
9888 all subsequent operations on the Local/Arg to also affect the
9889 original source of the store operation.
9891 Fixed a problem where a store operation to a Method Local or Arg
9892 was not completed properly if the Local/Arg contained a reference
9893 (from RefOf) to a named field. The general-purpose store-to-
9894 namespace-node code is now used so that this case is handled
9897 Fixed a problem where the internal object copy routine would cause
9898 a protection fault if the object being copied was a Package and
9899 contained either 1) a NULL package element or 2) a nested sub-
9902 Fixed a problem with the GPE initialization that resulted from an
9903 ambiguity in the ACPI specification. One section of the
9904 specification states that both the address and length of the GPE
9905 block must be zero if the block is not supported. Another section
9906 implies that only the address need be zero if the block is not
9907 supported. The code has been changed so that both the address and
9908 the length must be non-zero to indicate a valid GPE block (i.e.,
9909 if either the address or the length is zero, the GPE block is
9912 Code and Data Size: Current core subsystem library sizes are shown
9913 below. These are the code and data sizes for the acpica.lib
9914 produced by the Microsoft Visual C++ 6.0 compiler, and these
9915 values do not include any ACPI driver or OSPM code. The debug
9916 version of the code includes the debug output trace mechanism and
9917 has a much larger code and data size. Note that these values will
9918 vary depending on the efficiency of the compiler and the compiler
9919 options used during generation.
9922 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
9923 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
9925 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
9926 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
9931 Cleaned up EC driver. Exported an external EC read/write
9932 interface. By going through this, other drivers (most notably
9933 sonypi) will be able to serialize access to the EC.
9936 3) iASL Compiler/Disassembler
9938 Implemented support to optionally generate include files for both
9939 ASM and C (the -i switch). This simplifies BIOS development by
9940 automatically creating include files that contain external
9941 declarations for the symbols that are created within the
9943 (optionally generated) ASM and C AML source files.
9946 ----------------------------------------
9947 15 November 2002. Summary of changes for version 20021115.
9949 1) ACPI CA Core Subsystem:
9951 Fixed a memory leak problem where an error during resolution of
9953 method arguments during a method invocation from another method
9954 failed to cleanup properly by deleting all successfully resolved
9957 Fixed a problem where the target of the Index() operator was not
9958 correctly constructed if the source object was a package. This
9959 problem has not been detected because the use of a target operand
9960 with Index() is very rare.
9962 Fixed a problem with the Index() operator where an attempt was
9963 made to delete the operand objects twice.
9965 Fixed a problem where an attempt was made to delete an operand
9966 twice during execution of the CondRefOf() operator if the target
9969 Implemented the first of perhaps several internal create object
9970 functions that create and initialize a specific object type. This
9971 consolidates duplicated code wherever the object is created, thus
9972 shrinking the size of the subsystem.
9974 Implemented improved debug/error messages for errors that occur
9975 during nested method invocations. All executing method pathnames
9976 are displayed (with the error) as the call stack is unwound - thus
9979 Fixed a problem introduced in the 10/02 release that caused
9980 premature deletion of a buffer object if a buffer was used as an
9981 ASL operand where an integer operand is required (Thus causing an
9982 implicit object conversion from Buffer to Integer.) The change in
9983 the 10/02 release was attempting to fix a memory leak (albeit
9986 Code and Data Size: Current core subsystem library sizes are shown
9987 below. These are the code and data sizes for the acpica.lib
9988 produced by the Microsoft Visual C++ 6.0 compiler, and these
9989 values do not include any ACPI driver or OSPM code. The debug
9990 version of the code includes the debug output trace mechanism and
9991 has a much larger code and data size. Note that these values will
9992 vary depending on the efficiency of the compiler and the compiler
9993 options used during generation.
9996 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
9997 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
9999 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
10000 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
10005 Changed the implementation of the ACPI semaphores to use down()
10006 instead of down_interruptable(). It is important that the
10007 execution of ACPI control methods not be interrupted by signals.
10008 Methods must run to completion, or the system may be left in an
10009 unknown/unstable state.
10011 Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set.
10015 3) iASL Compiler/Disassembler
10018 Changed the default location of output files. All output files
10019 are now placed in the current directory by default instead of in
10020 the directory of the source file. This change may affect some
10021 existing makefiles, but it brings the behavior of the compiler in
10022 line with other similar tools. The location of the output files
10023 can be overridden with the -p command line switch.
10026 ----------------------------------------
10027 11 November 2002. Summary of changes for version 20021111.
10030 0) ACPI Specification 2.0B is released and is now available at:
10031 http://www.acpi.info/index.html
10034 1) ACPI CA Core Subsystem:
10036 Implemented support for the ACPI 2.0 SMBus Operation Regions.
10037 This includes the early detection and handoff of the request to
10038 the SMBus region handler (avoiding all of the complex field
10039 support code), and support for the bidirectional return packet
10040 from an SMBus write operation. This paves the way for the
10041 development of SMBus drivers in each host operating system.
10043 Fixed a problem where the semaphore WAIT_FOREVER constant was
10044 defined as 32 bits, but must be 16 bits according to the ACPI
10045 specification. This had the side effect of causing ASL
10046 Mutex/Event timeouts even though the ASL code requested a wait
10047 forever. Changed all internal references to the ACPI timeout
10048 parameter to 16 bits to prevent future problems. Changed the name
10049 of WAIT_FOREVER to ACPI_WAIT_FOREVER.
10051 Code and Data Size: Current core subsystem library sizes are shown
10052 below. These are the code and data sizes for the acpica.lib
10053 produced by the Microsoft Visual C++ 6.0 compiler, and these
10054 values do not include any ACPI driver or OSPM code. The debug
10055 version of the code includes the debug output trace mechanism and
10056 has a much larger code and data size. Note that these values will
10057 vary depending on the efficiency of the compiler and the compiler
10058 options used during generation.
10061 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
10062 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
10064 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
10065 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
10070 Module loading/unloading fixes (John Cagle)
10073 3) iASL Compiler/Disassembler
10075 Added support for the SMBBlockProcessCall keyword (ACPI 2.0)
10077 Implemented support for the disassembly of all SMBus protocol
10078 keywords (SMBQuick, SMBWord, etc.)
10080 ----------------------------------------
10081 01 November 2002. Summary of changes for version 20021101.
10084 1) ACPI CA Core Subsystem:
10086 Fixed a problem where platforms that have a GPE1 block but no GPE0
10087 block were not handled correctly. This resulted in a "GPE
10088 overlap" error message. GPE0 is no longer required.
10090 Removed code added in the previous release that inserted nodes
10091 into the namespace in alphabetical order. This caused some side-
10092 effects on various machines. The root cause of the problem is
10093 still under investigation since in theory, the internal ordering
10094 of the namespace nodes should not matter.
10097 Enhanced error reporting for the case where a named object is not
10098 found during control method execution. The full ACPI namepath
10099 (name reference) of the object that was not found is displayed in
10102 Note: as a result of the overhaul of the namespace object types in
10103 the previous release, the namespace nodes for the predefined
10104 scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE
10105 instead of ACPI_TYPE_ANY. This simplifies the namespace
10106 management code but may affect code that walks the namespace tree
10107 looking for specific object types.
10109 Code and Data Size: Current core subsystem library sizes are shown
10110 below. These are the code and data sizes for the acpica.lib
10111 produced by the Microsoft Visual C++ 6.0 compiler, and these
10112 values do not include any ACPI driver or OSPM code. The debug
10113 version of the code includes the debug output trace mechanism and
10114 has a much larger code and data size. Note that these values will
10115 vary depending on the efficiency of the compiler and the compiler
10116 options used during generation.
10119 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
10120 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
10122 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
10123 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
10128 Fixed a problem introduced in the previous release where the
10129 Processor and Thermal objects were not recognized and installed in
10130 /proc. This was related to the scope type change described above.
10133 3) iASL Compiler/Disassembler
10135 Implemented the -g option to get all of the required ACPI tables
10136 from the registry and save them to files (Windows version of the
10137 compiler only.) The required tables are the FADT, FACS, and DSDT.
10139 Added ACPI table checksum validation during table disassembly in
10140 order to catch corrupted tables.
10143 ----------------------------------------
10144 22 October 2002. Summary of changes for version 20021022.
10146 1) ACPI CA Core Subsystem:
10148 Implemented a restriction on the Scope operator that the target
10149 must already exist in the namespace at the time the operator is
10150 encountered (during table load or method execution). In other
10151 words, forward references are not allowed and Scope() cannot
10152 create a new object. This changes the previous behavior where the
10153 interpreter would create the name if not found. This new behavior
10154 correctly enables the search-to-root algorithm during namespace
10155 lookup of the target name. Because of this upsearch, this fixes
10156 the known Compaq _SB_.OKEC problem and makes both the AML
10157 interpreter and iASL compiler compatible with other ACPI
10160 Completed a major overhaul of the internal ACPI object types for
10161 the ACPI Namespace and the associated operand objects. Many of
10162 these types had become obsolete with the introduction of the two-
10163 pass namespace load. This cleanup simplifies the code and makes
10164 the entire namespace load mechanism much clearer and easier to
10167 Improved debug output for tracking scope opening/closing to help
10168 diagnose scoping issues. The old scope name as well as the new
10169 scope name are displayed. Also improved error messages for
10170 problems with ASL Mutex objects and error messages for GPE
10173 Cleaned up the namespace dump code, removed obsolete code.
10175 All string output (for all namespace/object dumps) now uses the
10176 common ACPI string output procedure which handles escapes properly
10177 and does not emit non-printable characters.
10179 Fixed some issues with constants in the 64-bit version of the
10180 local C library (utclib.c)
10185 EC Driver: No longer attempts to acquire the Global Lock at
10189 3) iASL Compiler/Disassembler
10191 Implemented ACPI 2.0B grammar change that disallows all Type 1 and
10192 2 opcodes outside of a control method. This means that the
10193 "executable" operators (versus the "namespace" operators) cannot
10194 be used at the table level; they can only be used within a control
10197 Implemented the restriction on the Scope() operator where the
10198 target must already exist in the namespace at the time the
10199 operator is encountered (during ASL compilation). In other words,
10200 forward references are not allowed and Scope() cannot create a new
10201 object. This makes the iASL compiler compatible with other ACPI
10202 implementations and makes the Scope() implementation adhere to the
10203 ACPI specification.
10205 Fixed a problem where namepath optimization for the Alias operator
10206 was optimizing the wrong path (of the two namepaths.) This caused
10207 a "Missing alias link" error message.
10209 Fixed a problem where an "unknown reserved name" warning could be
10210 incorrectly generated for names like "_SB" when the trailing
10211 underscore is not used in the original ASL.
10213 Fixed a problem where the reserved name check did not handle
10214 NamePaths with multiple NameSegs correctly. The first nameseg of
10215 the NamePath was examined instead of the last NameSeg.
10218 ----------------------------------------
10220 02 October 2002. Summary of changes for this release.
10223 1) ACPI CA Core Subsystem version 20021002:
10225 Fixed a problem where a store/copy of a string to an existing
10226 string did not always set the string length properly in the String
10229 Fixed a reported problem with the ToString operator where the
10230 behavior was identical to the ToHexString operator instead of just
10231 simply converting a raw buffer to a string data type.
10233 Fixed a problem where CopyObject and the other "explicit"
10234 conversion operators were not updating the internal namespace node
10235 type as part of the store operation.
10237 Fixed a memory leak during implicit source operand conversion
10238 where the original object was not deleted if it was converted to a
10239 new object of a different type.
10241 Enhanced error messages for all problems associated with namespace
10242 lookups. Common procedure generates and prints the lookup name as
10243 well as the formatted status.
10245 Completed implementation of a new design for the Alias support
10246 within the namespace. The existing design did not handle the case
10247 where a new object was assigned to one of the two names due to the
10248 use of an explicit conversion operator, resulting in the two names
10249 pointing to two different objects. The new design simply points
10250 the Alias name to the original name node - not to the object.
10251 This results in a level of indirection that must be handled in the
10252 name resolution mechanism.
10254 Code and Data Size: Current core subsystem library sizes are shown
10255 below. These are the code and data sizes for the acpica.lib
10256 produced by the Microsoft Visual C++ 6.0 compiler, and these
10257 values do not include any ACPI driver or OSPM code. The debug
10258 version of the code includes the debug output trace mechanism and
10259 has a larger code and data size. Note that these values will vary
10260 depending on the efficiency of the compiler and the compiler
10261 options used during generation.
10264 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
10265 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
10267 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
10268 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
10273 Initialize thermal driver's timer before it is used. (Knut
10276 Allow handling negative celsius values. (Kochi Takayoshi)
10278 Fix thermal management and make trip points. R/W (Pavel Machek)
10280 Fix /proc/acpi/sleep. (P. Christeas)
10282 IA64 fixes. (David Mosberger)
10284 Fix reversed logic in blacklist code. (Sergio Monteiro Basto)
10286 Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik
10290 3) iASL Compiler/Disassembler
10292 Clarified some warning/error messages.
10295 ----------------------------------------
10296 18 September 2002. Summary of changes for this release.
10299 1) ACPI CA Core Subsystem version 20020918:
10301 Fixed a reported problem with reference chaining (via the Index()
10302 and RefOf() operators) in the ObjectType() and SizeOf() operators.
10303 The definition of these operators includes the dereferencing of
10304 all chained references to return information on the base object.
10306 Fixed a problem with stores to indexed package elements - the
10307 existing code would not complete the store if an "implicit
10308 conversion" was not performed. In other words, if the existing
10309 object (package element) was to be replaced completely, the code
10310 didn't handle this case.
10312 Relaxed typechecking on the ASL "Scope" operator to allow the
10313 target name to refer to an object of type Integer, String, or
10314 Buffer, in addition to the scoping object types (Device,
10315 predefined Scopes, Processor, PowerResource, and ThermalZone.)
10316 This allows existing AML code that has workarounds for a bug in
10317 Windows to function properly. A warning is issued, however. This
10318 affects both the AML interpreter and the iASL compiler. Below is
10319 an example of this type of ASL code:
10325 Fixed some reported problems with 64-bit integer support in the
10326 local implementation of C library functions (clib.c)
10331 Use ACPI fix map region instead of IOAPIC region, since it is
10332 undefined in non-SMP.
10334 Ensure that the SCI has the proper polarity and trigger, even on
10335 systems that do not have an interrupt override entry in the MADT.
10337 2.5 big driver reorganization (Pat Mochel)
10339 Use early table mapping code from acpitable.c (Andi Kleen)
10341 New blacklist entries (Andi Kleen)
10343 Blacklist improvements. Split blacklist code out into a separate
10344 file. Move checking the blacklist to very early. Previously, we
10345 would use ACPI tables, and then halfway through init, check the
10346 blacklist -- too late. Now, it's early enough to completely fall-
10350 3) iASL Compiler/Disassembler version 20020918:
10352 Fixed a problem where the typechecking code didn't know that an
10353 alias could point to a method. In other words, aliases were not
10354 being dereferenced during typechecking.
10357 ----------------------------------------
10358 29 August 2002. Summary of changes for this release.
10360 1) ACPI CA Core Subsystem Version 20020829:
10362 If the target of a Scope() operator already exists, it must be an
10363 object type that actually opens a scope -- such as a Device,
10364 Method, Scope, etc. This is a fatal runtime error. Similar error
10365 check has been added to the iASL compiler also.
10367 Tightened up the namespace load to disallow multiple names in the
10368 same scope. This previously was allowed if both objects were of
10369 the same type. (i.e., a lookup was the same as entering a new
10375 Ensure that the ACPI interrupt has the proper trigger and
10378 local_irq_disable is extraneous. (Matthew Wilcox)
10380 Make "acpi=off" actually do what it says, and not use the ACPI
10381 interpreter *or* the tables.
10383 Added arch-neutral support for parsing SLIT and SRAT tables (Kochi
10387 3) iASL Compiler/Disassembler Version 20020829:
10389 Implemented namepath optimization for name declarations. For
10390 example, a declaration like "Method (\_SB_.ABCD)" would get
10391 optimized to "Method (ABCD)" if the declaration is within the
10392 \_SB_ scope. This optimization is in addition to the named
10393 reference path optimization first released in the previous
10394 version. This would seem to complete all possible optimizations
10395 for namepaths within the ASL/AML.
10397 If the target of a Scope() operator already exists, it must be an
10398 object type that actually opens a scope -- such as a Device,
10399 Method, Scope, etc.
10401 Implemented a check and warning for unreachable code in the same
10402 block below a Return() statement.
10404 Fixed a problem where the listing file was not generated if the
10405 compiler aborted if the maximum error count was exceeded (200).
10407 Fixed a problem where the typechecking of method return values was
10408 broken. This includes the check for a return value when the
10409 method is invoked as a TermArg (a return value is expected.)
10411 Fixed a reported problem where EOF conditions during a quoted
10412 string or comment caused a fault.
10415 ----------------------------------------
10416 15 August 2002. Summary of changes for this release.
10418 1) ACPI CA Core Subsystem Version 20020815:
10420 Fixed a reported problem where a Store to a method argument that
10421 contains a reference did not perform the indirect store correctly.
10422 This problem was created during the conversion to the new
10423 reference object model - the indirect store to a method argument
10424 code was not updated to reflect the new model.
10426 Reworked the ACPI mode change code to better conform to ACPI 2.0,
10427 handle corner cases, and improve code legibility (Kochi Takayoshi)
10429 Fixed a problem with the pathname parsing for the carat (^)
10430 prefix. The heavy use of the carat operator by the new namepath
10431 optimization in the iASL compiler uncovered a problem with the AML
10432 interpreter handling of this prefix. In the case where one or
10433 more carats precede a single nameseg, the nameseg was treated as
10434 standalone and the search rule (to root) was inadvertently
10435 applied. This could cause both the iASL compiler and the
10436 interpreter to find the wrong object or to miss the error that
10437 should occur if the object does not exist at that exact pathname.
10439 Found and fixed the problem where the HP Pavilion DSDT would not
10440 load. This was a relatively minor tweak to the table loading code
10441 (a problem caused by the unexpected encounter with a method
10442 invocation not within a control method), but it does not solve the
10443 overall issue of the execution of AML code at the table level.
10444 This investigation is still ongoing.
10446 Code and Data Size: Current core subsystem library sizes are shown
10447 below. These are the code and data sizes for the acpica.lib
10448 produced by the Microsoft Visual C++ 6.0 compiler, and these
10449 values do not include any ACPI driver or OSPM code. The debug
10450 version of the code includes the debug output trace mechanism and
10451 has a larger code and data size. Note that these values will vary
10452 depending on the efficiency of the compiler and the compiler
10453 options used during generation.
10456 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
10457 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
10459 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
10460 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
10465 Remove redundant slab.h include (Brad Hards)
10467 Fix several bugs in thermal.c (Herbert Nachtnebel)
10469 Make CONFIG_ACPI_BOOT work properly (Pavel Machek)
10471 Change acpi_system_suspend to use updated irq functions (Pavel
10474 Export acpi_get_firmware_table (Matthew Wilcox)
10476 Use proper root proc entry for ACPI (Kochi Takayoshi)
10478 Fix early-boot table parsing (Bjorn Helgaas)
10481 3) iASL Compiler/Disassembler
10483 Reworked the compiler options to make them more consistent and to
10484 use two-letter options where appropriate. We were running out of
10485 sensible letters. This may break some makefiles, so check the
10486 current options list by invoking the compiler with no parameters.
10488 Completed the design and implementation of the ASL namepath
10489 optimization option for the compiler. This option optimizes all
10490 references to named objects to the shortest possible path. The
10491 first attempt tries to utilize a single nameseg (4 characters) and
10492 the "search-to-root" algorithm used by the interpreter. If that
10493 cannot be used (because either the name is not in the search path
10494 or there is a conflict with another object with the same name),
10495 the pathname is optimized using the carat prefix (usually a
10496 shorter string than specifying the entire path from the root.)
10498 Implemented support to obtain the DSDT from the Windows registry
10499 (when the disassembly option is specified with no input file).
10500 Added this code as the implementation for AcpiOsTableOverride in
10501 the Windows OSL. Migrated the 16-bit code (used in the AcpiDump
10502 utility) to scan memory for the DSDT to the AcpiOsTableOverride
10503 function in the DOS OSL to make the disassembler truly OS
10506 Implemented a new option to disassemble and compile in one step.
10507 When used without an input filename, this option will grab the
10508 DSDT from the local machine, disassemble it, and compile it in one
10511 Added a warning message for invalid escapes (a backslash followed
10512 by any character other than the allowable escapes). This catches
10513 the quoted string error "\_SB_" (which should be "\\_SB_" ).
10515 Also, there are numerous instances in the ACPI specification where
10518 Added a compiler option to disable all optimizations. This is
10519 basically the "compatibility mode" because by using this option,
10520 the AML code will come out exactly the same as other ASL
10523 Added error messages for incorrectly ordered dependent resource
10524 functions. This includes: missing EndDependentFn macro at end of
10525 dependent resource list, nested dependent function macros (both
10526 start and end), and missing StartDependentFn macro. These are
10527 common errors that should be caught at compile time.
10529 Implemented _OSI support for the disassembler and compiler. _OSI
10530 must be included in the namespace for proper disassembly (because
10531 the disassembler must know the number of arguments.)
10533 Added an "optimization" message type that is optional (off by
10534 default). This message is used for all optimizations - including
10535 constant folding, integer optimization, and namepath optimization.
10537 ----------------------------------------
10538 25 July 2002. Summary of changes for this release.
10541 1) ACPI CA Core Subsystem Version 20020725:
10543 The AML Disassembler has been enhanced to produce compilable ASL
10544 code and has been integrated into the iASL compiler (see below) as
10545 well as the single-step disassembly for the AML debugger and the
10546 disassembler for the AcpiDump utility. All ACPI 2.0A opcodes,
10547 resource templates and macros are fully supported. The
10548 disassembler has been tested on over 30 different AML files,
10549 producing identical AML when the resulting disassembled ASL file
10550 is recompiled with the same ASL compiler.
10552 Modified the Resource Manager to allow zero interrupts and zero
10553 dma channels during the GetCurrentResources call. This was
10554 causing problems on some platforms.
10556 Added the AcpiOsRedirectOutput interface to the OSL to simplify
10557 output redirection for the AcpiOsPrintf and AcpiOsVprintf
10560 Code and Data Size: Current core subsystem library sizes are shown
10561 below. These are the code and data sizes for the acpica.lib
10562 produced by the Microsoft Visual C++ 6.0 compiler, and these
10563 values do not include any ACPI driver or OSPM code. The debug
10564 version of the code includes the debug output trace mechanism and
10565 has a larger code and data size. Note that these values will vary
10566 depending on the efficiency of the compiler and the compiler
10567 options used during generation.
10570 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
10571 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
10573 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
10574 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
10579 Fixed a panic in the EC driver (Dominik Brodowski)
10581 Implemented checksum of the R/XSDT itself during Linux table scan
10587 The AML disassembler is integrated into the compiler. The "-d"
10588 option invokes the disassembler to completely disassemble an
10589 input AML file, producing as output a text ASL file with the
10590 extension ".dsl" (to avoid name collisions with existing .asl
10591 source files.) A future enhancement will allow the disassembler
10592 to obtain the BIOS DSDT from the registry under Windows.
10594 Fixed a problem with the VendorShort and VendorLong resource
10595 descriptors where an invalid AML sequence was created.
10597 Implemented a fix for BufferData term in the ASL parser. It was
10598 inadvertently defined twice, allowing invalid syntax to pass and
10599 causing reduction conflicts.
10601 Fixed a problem where the Ones opcode could get converted to a
10602 value of zero if "Ones" was used where a byte, word or dword value
10603 was expected. The 64-bit value is now truncated to the correct
10604 size with the correct value.
10608 ----------------------------------------
10609 02 July 2002. Summary of changes for this release.
10612 1) ACPI CA Core Subsystem Version 20020702:
10614 The Table Manager code has been restructured to add several new
10615 features. Tables that are not required by the core subsystem
10616 (other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer
10617 validated in any way and are returned from AcpiGetFirmwareTable if
10618 requested. The AcpiOsTableOverride interface is now called for
10619 each table that is loaded by the subsystem in order to allow the
10620 host to override any table it chooses. Previously, only the DSDT
10621 could be overridden. Added one new files, tbrsdt.c and
10624 Fixed a problem with the conversion of internal package objects to
10625 external objects (when a package is returned from a control
10626 method.) The return buffer length was set to zero instead of the
10627 proper length of the package object.
10629 Fixed a reported problem with the use of the RefOf and DeRefOf
10630 operators when passing reference arguments to control methods. A
10631 new type of Reference object is used internally for references
10632 produced by the RefOf operator.
10634 Added additional error messages in the Resource Manager to explain
10635 AE_BAD_DATA errors when they occur during resource parsing.
10637 Split the AcpiEnableSubsystem into two primitives to enable a
10638 finer granularity initialization sequence. These two calls should
10639 be called in this order: AcpiEnableSubsystem (flags),
10640 AcpiInitializeObjects (flags). The flags parameter remains the
10646 Updated the ACPI utilities module to understand the new style of
10647 fully resolved package objects that are now returned from the core
10648 subsystem. This eliminates errors of the form:
10650 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT]
10651 acpi_utils-0430 [145] acpi_evaluate_reference:
10652 Invalid element in package (not a device reference)
10654 The method evaluation utility uses the new buffer allocation
10655 scheme instead of calling AcpiEvaluate Object twice.
10657 Added support for ECDT. This allows the use of the Embedded
10659 Controller before the namespace has been fully initialized, which
10660 is necessary for ACPI 2.0 support, and for some laptops to
10661 initialize properly. (Laptops using ECDT are still rare, so only
10662 limited testing was performed of the added functionality.)
10664 Fixed memory leaks in the EC driver.
10666 Eliminated a brittle code structure in acpi_bus_init().
10668 Eliminated the acpi_evaluate() helper function in utils.c. It is
10669 no longer needed since acpi_evaluate_object can optionally
10670 allocate memory for the return object.
10672 Implemented fix for keyboard hang when getting battery readings on
10673 some systems (Stephen White)
10675 PCI IRQ routing update (Dominik Brodowski)
10677 Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC
10680 ----------------------------------------
10681 11 June 2002. Summary of changes for this release.
10684 1) ACPI CA Core Subsystem Version 20020611:
10686 Fixed a reported problem where constants such as Zero and One
10687 appearing within _PRT packages were not handled correctly within
10688 the resource manager code. Originally reported against the ASL
10689 compiler because the code generator now optimizes integers to
10690 their minimal AML representation (i.e. AML constants if possible.)
10691 The _PRT code now handles all AML constant opcodes correctly
10692 (Zero, One, Ones, Revision).
10694 Fixed a problem with the Concatenate operator in the AML
10695 interpreter where a buffer result object was incorrectly marked as
10696 not fully evaluated, causing a run-time error of AE_AML_INTERNAL.
10698 All package sub-objects are now fully resolved before they are
10699 returned from the external ACPI interfaces. This means that name
10700 strings are resolved to object handles, and constant operators
10701 (Zero, One, Ones, Revision) are resolved to Integers.
10703 Implemented immediate resolution of the AML Constant opcodes
10704 (Zero, One, Ones, Revision) to Integer objects upon detection
10705 within the AML stream. This has simplified and reduced the
10706 generated code size of the subsystem by eliminating about 10
10707 switch statements for these constants (which previously were
10708 contained in Reference objects.) The complicating issues are that
10709 the Zero opcode is used as a "placeholder" for unspecified
10710 optional target operands and stores to constants are defined to be
10713 Code and Data Size: Current core subsystem library sizes are shown
10714 below. These are the code and data sizes for the acpica.lib
10715 produced by the Microsoft Visual C++ 6.0 compiler, and these
10716 values do not include any ACPI driver or OSPM code. The debug
10717 version of the code includes the debug output trace mechanism and
10718 has a larger code and data size. Note that these values will vary
10719 depending on the efficiency of the compiler and the compiler
10720 options used during generation.
10723 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
10724 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
10726 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
10727 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
10733 Added preliminary support for obtaining _TRA data for PCI root
10734 bridges (Bjorn Helgaas).
10737 3) iASL Compiler Version X2046:
10739 Fixed a problem where the "_DDN" reserved name was defined to be a
10740 control method with one argument. There are no arguments, and
10741 _DDN does not have to be a control method.
10743 Fixed a problem with the Linux version of the compiler where the
10744 source lines printed with error messages were the wrong lines.
10745 This turned out to be the "LF versus CR/LF" difference between
10746 Windows and Unix. This appears to be the longstanding issue
10747 concerning listing output and error messages.
10749 Fixed a problem with the Linux version of compiler where opcode
10750 names within error messages were wrong. This was caused by a
10751 slight difference in the output of the Flex tool on Linux versus
10754 Fixed a problem with the Linux compiler where the hex output files
10755 contained some garbage data caused by an internal buffer overrun.
10758 ----------------------------------------
10759 17 May 2002. Summary of changes for this release.
10762 1) ACPI CA Core Subsystem Version 20020517:
10764 Implemented a workaround to an BIOS bug discovered on the HP
10765 OmniBook where the FADT revision number and the table size are
10766 inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new
10767 behavior is to fallback to using only the ACPI 1.0 fields of the
10768 FADT if the table is too small to be a ACPI 2.0 table as claimed
10769 by the revision number. Although this is a BIOS bug, this is a
10770 case where the workaround is simple enough and with no side
10771 effects, so it seemed prudent to add it. A warning message is
10774 Implemented minimum size checks for the fixed-length ACPI tables -
10775 - the FADT and FACS, as well as consistency checks between the
10776 revision number and the table size.
10778 Fixed a reported problem in the table override support where the
10779 new table pointer was incorrectly treated as a physical address
10780 instead of a logical address.
10782 Eliminated the use of the AE_AML_ERROR exception and replaced it
10783 with more descriptive codes.
10785 Fixed a problem where an exception would occur if an ASL Field was
10786 defined with no named Field Units underneath it (used by some
10789 Code and Data Size: Current core subsystem library sizes are shown
10790 below. These are the code and data sizes for the acpica.lib
10791 produced by the Microsoft Visual C++ 6.0 compiler, and these
10792 values do not include any ACPI driver or OSPM code. The debug
10793 version of the code includes the debug output trace mechanism and
10794 has a larger code and data size. Note that these values will vary
10795 depending on the efficiency of the compiler and the compiler
10796 options used during generation.
10799 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
10800 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
10802 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
10803 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
10809 Much work done on ACPI init (MADT and PCI IRQ routing support).
10810 (Paul D. and Dominik Brodowski)
10812 Fix PCI IRQ-related panic on boot (Sam Revitch)
10814 Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno)
10816 Fix "MHz" typo (Dominik Brodowski)
10818 Fix RTC year 2000 issue (Dominik Brodowski)
10820 Preclude multiple button proc entries (Eric Brunet)
10822 Moved arch-specific code out of include/platform/aclinux.h
10824 3) iASL Compiler Version X2044:
10826 Implemented error checking for the string used in the EISAID macro
10827 (Usually used in the definition of the _HID object.) The code now
10828 strictly enforces the PnP format - exactly 7 characters, 3
10829 uppercase letters and 4 hex digits.
10831 If a raw string is used in the definition of the _HID object
10832 (instead of the EISAID macro), the string must contain all
10833 alphanumeric characters (e.g., "*PNP0011" is not allowed because
10836 Implemented checking for invalid use of ACPI reserved names for
10837 most of the name creation operators (Name, Device, Event, Mutex,
10838 OperationRegion, PowerResource, Processor, and ThermalZone.)
10839 Previously, this check was only performed for control methods.
10841 Implemented an additional check on the Name operator to emit an
10842 error if a reserved name that must be implemented in ASL as a
10843 control method is used. We know that a reserved name must be a
10844 method if it is defined with input arguments.
10846 The warning emitted when a namespace object reference is not found
10847 during the cross reference phase has been changed into an error.
10848 The "External" directive should be used for names defined in other
10852 4) Tools and Utilities
10854 The 16-bit tools (adump16 and aexec16) have been regenerated and
10857 Fixed a problem with the output of both acpidump and adump16 where
10858 the indentation of closing parentheses and brackets was not
10860 aligned properly with the parent block.
10863 ----------------------------------------
10864 03 May 2002. Summary of changes for this release.
10867 1) ACPI CA Core Subsystem Version 20020503:
10869 Added support a new OSL interface that allows the host operating
10871 system software to override the DSDT found in the firmware -
10872 AcpiOsTableOverride. With this interface, the OSL can examine the
10873 version of the firmware DSDT and replace it with a different one
10876 Added new external interfaces for accessing ACPI registers from
10877 device drivers and other system software - AcpiGetRegister and
10878 AcpiSetRegister. This was simply an externalization of the
10879 existing AcpiHwBitRegister interfaces.
10881 Fixed a regression introduced in the previous build where the
10882 ASL/AML CreateField operator always returned an error,
10883 "destination must be a NS Node".
10885 Extended the maximum time (before failure) to successfully enable
10886 ACPI mode to 3 seconds.
10888 Code and Data Size: Current core subsystem library sizes are shown
10889 below. These are the code and data sizes for the acpica.lib
10890 produced by the Microsoft Visual C++ 6.0 compiler, and these
10891 values do not include any ACPI driver or OSPM code. The debug
10892 version of the code includes the debug output trace mechanism and
10893 has a larger code and data size. Note that these values will vary
10894 depending on the efficiency of the compiler and the compiler
10895 options used during generation.
10898 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
10899 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
10901 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
10902 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
10907 Enhanced ACPI init code for SMP. We are now fully MPS and $PIR-
10908 free. While 3 out of 4 of our in-house systems work fine, the last
10909 one still hangs when testing the LAPIC timer.
10911 Renamed many files in 2.5 kernel release to omit "acpi_" from the
10914 Added warning on boot for Presario 711FR.
10916 Sleep improvements (Pavel Machek)
10918 ACPI can now be built without CONFIG_PCI enabled.
10920 IA64: Fixed memory map functions (JI Lee)
10923 3) iASL Compiler Version X2043:
10925 Added support to allow the compiler to be integrated into the MS
10926 VC++ development environment for one-button compilation of single
10927 files or entire projects -- with error-to-source-line mapping.
10929 Implemented support for compile-time constant folding for the
10930 Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0
10931 specification. This allows the ASL writer to use expressions
10932 instead of Integer/Buffer/String constants in terms that must
10933 evaluate to constants at compile time and will also simplify the
10934 emitted AML in any such sub-expressions that can be folded
10935 (evaluated at compile-time.) This increases the size of the
10936 compiler significantly because a portion of the ACPI CA AML
10937 interpreter is included within the compiler in order to pre-
10938 evaluate constant expressions.
10941 Fixed a problem with the "Unicode" ASL macro that caused the
10942 compiler to fault. (This macro is used in conjunction with the
10943 _STR reserved name.)
10945 Implemented an AML opcode optimization to use the Zero, One, and
10946 Ones opcodes where possible to further reduce the size of integer
10947 constants and thus reduce the overall size of the generated AML
10950 Implemented error checking for new reserved terms for ACPI version
10953 Implemented the -qr option to display the current list of ACPI
10954 reserved names known to the compiler.
10956 Implemented the -qc option to display the current list of ASL
10957 operators that are allowed within constant expressions and can
10958 therefore be folded at compile time if the operands are constants.
10963 Updated the Programmer's Reference for new interfaces, data types,
10964 and memory allocation model options.
10966 Updated the iASL Compiler User Reference to apply new format and
10967 add information about new features and options.
10969 ----------------------------------------
10970 19 April 2002. Summary of changes for this release.
10972 1) ACPI CA Core Subsystem Version 20020419:
10974 The source code base for the Core Subsystem has been completely
10975 cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit
10976 versions. The Lint option files used are included in the
10977 /acpi/generate/lint directory.
10979 Implemented enhanced status/error checking across the entire
10980 Hardware manager subsystem. Any hardware errors (reported from
10981 the OSL) are now bubbled up and will abort a running control
10985 Fixed a problem where the per-ACPI-table integer width (32 or 64)
10986 was stored only with control method nodes, causing a fault when
10987 non-control method code was executed during table loading. The
10988 solution implemented uses a global variable to indicate table
10989 width across the entire ACPI subsystem. Therefore, ACPI CA does
10990 not support mixed integer widths across different ACPI tables
10993 Fixed a problem where NULL extended fields (X fields) in an ACPI
10994 2.0 ACPI FADT caused the table load to fail. Although the
10995 existing ACPI specification is a bit fuzzy on this topic, the new
10996 behavior is to fall back on a ACPI 1.0 field if the corresponding
10997 ACPI 2.0 X field is zero (even though the table revision indicates
10998 a full ACPI 2.0 table.) The ACPI specification will be updated to
10999 clarify this issue.
11001 Fixed a problem with the SystemMemory operation region handler
11002 where memory was always accessed byte-wise even if the AML-
11003 specified access width was larger than a byte. This caused
11004 problems on systems with memory-mapped I/O. Memory is now
11005 accessed with the width specified. On systems that do not support
11006 non-aligned transfers, a check is made to guarantee proper address
11007 alignment before proceeding in order to avoid an AML-caused
11008 alignment fault within the kernel.
11011 Fixed a problem with the ExtendedIrq resource where only one byte
11012 of the 4-byte Irq field was extracted.
11014 Fixed the AcpiExDigitsNeeded() procedure to support _UID. This
11015 function was out of date and required a rewrite.
11017 Code and Data Size: Current core subsystem library sizes are shown
11018 below. These are the code and data sizes for the acpica.lib
11019 produced by the Microsoft Visual C++ 6.0 compiler, and these
11020 values do not include any ACPI driver or OSPM code. The debug
11021 version of the code includes the debug output trace mechanism and
11022 has a larger code and data size. Note that these values will vary
11023 depending on the efficiency of the compiler and the compiler
11024 options used during generation.
11027 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
11028 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
11030 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
11031 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
11036 PCI IRQ routing fixes (Dominik Brodowski)
11039 3) iASL Compiler Version X2042:
11041 Implemented an additional compile-time error check for a field
11042 unit whose size + minimum access width would cause a run-time
11043 access beyond the end-of-region. Previously, only the field size
11044 itself was checked.
11046 The Core subsystem and iASL compiler now share a common parse
11047 object in preparation for compile-time evaluation of the type
11048 3/4/5 ASL operators.
11051 ----------------------------------------
11052 Summary of changes for this release: 03_29_02
11054 1) ACPI CA Core Subsystem Version 20020329:
11056 Implemented support for late evaluation of TermArg operands to
11057 Buffer and Package objects. This allows complex expressions to be
11058 used in the declarations of these object types.
11060 Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI
11061 1.0, if the field was larger than 32 bits, it was returned as a
11062 buffer - otherwise it was returned as an integer. In ACPI 2.0,
11063 the field is returned as a buffer only if the field is larger than
11064 64 bits. The TableRevision is now considered when making this
11065 conversion to avoid incompatibility with existing ASL code.
11067 Implemented logical addressing for AcpiOsGetRootPointer. This
11068 allows an RSDP with either a logical or physical address. With
11069 this support, the host OS can now override all ACPI tables with
11070 one logical RSDP. Includes implementation of "typed" pointer
11071 support to allow a common data type for both physical and logical
11072 pointers internally. This required a change to the
11073 AcpiOsGetRootPointer interface.
11075 Implemented the use of ACPI 2.0 Generic Address Structures for all
11076 GPE, Fixed Event, and PM Timer I/O. This allows the use of memory
11077 mapped I/O for these ACPI features.
11079 Initialization now ignores not only non-required tables (All
11080 tables other than the FADT, FACS, DSDT, and SSDTs), but also does
11081 not validate the table headers of unrecognized tables.
11083 Fixed a problem where a notify handler could only be
11084 installed/removed on an object of type Device. All "notify"
11086 objects are now supported -- Devices, Processor, Power, and
11089 Removed most verbosity from the ACPI_DB_INFO debug level. Only
11090 critical information is returned when this debug level is enabled.
11092 Code and Data Size: Current core subsystem library sizes are shown
11093 below. These are the code and data sizes for the acpica.lib
11094 produced by the Microsoft Visual C++ 6.0 compiler, and these
11095 values do not include any ACPI driver or OSPM code. The debug
11096 version of the code includes the debug output trace mechanism and
11097 has a larger code and data size. Note that these values will vary
11098 depending on the efficiency of the compiler and the compiler
11099 options used during generation.
11102 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
11103 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
11105 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
11106 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
11111 The processor driver (acpi_processor.c) now fully supports ACPI
11112 2.0-based processor performance control (e.g. Intel(R)
11113 SpeedStep(TM) technology) Note that older laptops that only have
11114 the Intel "applet" interface are not supported through this. The
11115 'limit' and 'performance' interface (/proc) are fully functional.
11116 [Note that basic policy for controlling performance state
11117 transitions will be included in the next version of ospmd.] The
11118 idle handler was modified to more aggressively use C2, and PIIX4
11119 errata handling underwent a complete overhaul (big thanks to
11120 Dominik Brodowski).
11122 Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR-
11123 based devices in the ACPI namespace are now dynamically bound
11124 (associated) with their PCI counterparts (e.g. PCI1->01:00.0).
11125 This allows, among other things, ACPI to resolve bus numbers for
11126 subordinate PCI bridges.
11128 Enhanced PCI IRQ routing to get the proper bus number for _PRT
11129 entries defined underneath PCI bridges.
11131 Added IBM 600E to bad bios list due to invalid _ADR value for
11132 PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing.
11134 In the process of adding full MADT support (e.g. IOAPIC) for IA32
11135 (acpi.c, mpparse.c) -- stay tuned.
11137 Added back visual differentiation between fixed-feature and
11138 control-method buttons in dmesg. Buttons are also subtyped (e.g.
11139 button/power/PWRF) to simplify button identification.
11141 We no longer use -Wno-unused when compiling debug. Please ignore
11142 any "_THIS_MODULE defined but not used" messages.
11144 Can now shut down the system using "magic sysrq" key.
11147 3) iASL Compiler version 2041:
11149 Fixed a problem where conversion errors for hex/octal/decimal
11150 constants were not reported.
11152 Implemented a fix for the General Register template Address field.
11153 This field was 8 bits when it should be 64.
11155 Fixed a problem where errors/warnings were no longer being emitted
11156 within the listing output file.
11158 Implemented the ACPI 2.0A restriction on ACPI Table Signatures to
11159 exactly 4 characters, alphanumeric only.
11164 ----------------------------------------
11165 Summary of changes for this release: 03_08_02
11168 1) ACPI CA Core Subsystem Version 20020308:
11170 Fixed a problem with AML Fields where the use of the "AccessAny"
11171 keyword could cause an interpreter error due to attempting to read
11172 or write beyond the end of the parent Operation Region.
11174 Fixed a problem in the SystemMemory Operation Region handler where
11175 an attempt was made to map memory beyond the end of the region.
11176 This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY"
11177 errors on some Linux systems.
11179 Fixed a problem where the interpreter/namespace "search to root"
11180 algorithm was not functioning for some object types. Relaxed the
11181 internal restriction on the search to allow upsearches for all
11182 external object types as well as most internal types.
11187 We now use safe_halt() macro versus individual calls to sti | hlt.
11189 Writing to the processor limit interface should now work. "echo 1"
11190 will increase the limit, 2 will decrease, and 0 will reset to the
11197 Fixed segfault on Linux version.
11200 ----------------------------------------
11201 Summary of changes for this release: 02_25_02
11203 1) ACPI CA Core Subsystem:
11206 Fixed a problem where the GPE bit masks were not initialized
11207 properly, causing erratic GPE behavior.
11209 Implemented limited support for multiple calling conventions. The
11210 code can be generated with either the VPL (variable parameter
11211 list, or "C") convention, or the FPL (fixed parameter list, or
11212 "Pascal") convention. The core subsystem is about 3.4% smaller
11213 when generated with FPL.
11218 Re-add some /proc/acpi/event functionality that was lost during
11221 Resolved issue with /proc events for fixed-feature buttons showing
11222 up as the system device.
11224 Fixed checks on C2/C3 latencies to be inclusive of maximum values.
11226 Replaced AE_ERRORs in acpi_osl.c with more specific error codes.
11228 Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi"
11230 Fixed limit interface & usage to fix bugs with passive cooling
11233 Restructured PRT support.
11236 ----------------------------------------
11237 Summary of changes for this label: 02_14_02
11240 1) ACPI CA Core Subsystem:
11242 Implemented support in AcpiLoadTable to allow loading of FACS and
11245 Suport for the now-obsolete interim 0.71 64-bit ACPI tables has
11246 been removed. All 64-bit platforms should be migrated to the ACPI
11247 2.0 tables. The actbl71.h header has been removed from the source
11250 All C macros defined within the subsystem have been prefixed with
11251 "ACPI_" to avoid collision with other system include files.
11253 Removed the return value for the two AcpiOsPrint interfaces, since
11254 it is never used and causes lint warnings for ignoring the return
11257 Added error checking to all internal mutex acquire and release
11258 calls. Although a failure from one of these interfaces is
11259 probably a fatal system error, these checks will cause the
11260 immediate abort of the currently executing method or interface.
11262 Fixed a problem where the AcpiSetCurrentResources interface could
11263 fault. This was a side effect of the deployment of the new memory
11266 Fixed a couple of problems with the Global Lock support introduced
11267 in the last major build. The "common" (1.0/2.0) internal FACS was
11268 being overwritten with the FACS signature and clobbering the
11269 Global Lock pointer. Also, the actual firmware FACS was being
11270 unmapped after construction of the "common" FACS, preventing
11271 access to the actual Global Lock field within it. The "common"
11272 internal FACS is no longer installed as an actual ACPI table; it
11273 is used simply as a global.
11275 Code and Data Size: Current core subsystem library sizes are shown
11276 below. These are the code and data sizes for the acpica.lib
11277 produced by the Microsoft Visual C++ 6.0 compiler, and these
11278 values do not include any ACPI driver or OSPM code. The debug
11279 version of the code includes the debug output trace mechanism and
11280 has a larger code and data size. Note that these values will vary
11281 depending on the efficiency of the compiler and the compiler
11282 options used during generation.
11284 Previous Release (02_07_01)
11285 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
11286 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
11288 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
11289 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
11294 Updated Linux-specific code for core macro and OSL interface
11295 changes described above.
11297 Improved /proc/acpi/event. It now can be opened only once and has
11298 proper poll functionality.
11300 Fixed and restructured power management (acpi_bus).
11302 Only create /proc "view by type" when devices of that class exist.
11304 Fixed "charging/discharging" bug (and others) in acpi_battery.
11306 Improved thermal zone code.
11309 3) ASL Compiler, version X2039:
11312 Implemented the new compiler restriction on ASL String hex/octal
11313 escapes to non-null, ASCII values. An error results if an invalid
11314 value is used. (This will require an ACPI 2.0 specification
11317 AML object labels that are output to the optional C and ASM source
11318 are now prefixed with both the ACPI table signature and table ID
11319 to help guarantee uniqueness within a large BIOS project.
11322 ----------------------------------------
11323 Summary of changes for this label: 02_01_02
11325 1) ACPI CA Core Subsystem:
11327 ACPI 2.0 support is complete in the entire Core Subsystem and the
11328 ASL compiler. All new ACPI 2.0 operators are implemented and all
11329 other changes for ACPI 2.0 support are complete. With
11330 simultaneous code and data optimizations throughout the subsystem,
11331 ACPI 2.0 support has been implemented with almost no additional
11332 cost in terms of code and data size.
11334 Implemented a new mechanism for allocation of return buffers. If
11335 the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will
11336 be allocated on behalf of the caller. Consolidated all return
11337 buffer validation and allocation to a common procedure. Return
11338 buffers will be allocated via the primary OSL allocation interface
11339 since it appears that a separate pool is not needed by most users.
11340 If a separate pool is required for these buffers, the caller can
11341 still use the original mechanism and pre-allocate the buffer(s).
11343 Implemented support for string operands within the DerefOf
11346 Restructured the Hardware and Event managers to be table driven,
11347 simplifying the source code and reducing the amount of generated
11350 Split the common read/write low-level ACPI register bitfield
11351 procedure into a separate read and write, simplifying the code
11354 Obsoleted the AcpiOsCallocate OSL interface. This interface was
11355 used only a handful of times and didn't have enough critical mass
11356 for a separate interface. Replaced with a common calloc procedure
11359 Fixed a reported problem with the GPE number mapping mechanism
11360 that allows GPE1 numbers to be non-contiguous with GPE0.
11361 Reorganized the GPE information and shrunk a large array that was
11362 originally large enough to hold info for all possible GPEs (256)
11363 to simply large enough to hold all GPEs up to the largest GPE
11364 number on the machine.
11366 Fixed a reported problem with resource structure alignment on 64-
11369 Changed the AcpiEnableEvent and AcpiDisableEvent external
11370 interfaces to not require any flags for the common case of
11371 enabling/disabling a GPE.
11373 Implemented support to allow a "Notify" on a Processor object.
11375 Most TBDs in comments within the source code have been resolved
11379 Fixed a problem in the interpreter where a standalone parent
11380 prefix (^) was not handled correctly in the interpreter and
11383 Removed obsolete and unnecessary GPE save/restore code.
11385 Implemented Field support in the ASL Load operator. This allows a
11386 table to be loaded from a named field, in addition to loading a
11387 table directly from an Operation Region.
11389 Implemented timeout and handle support in the external Global Lock
11392 Fixed a problem in the AcpiDump utility where pathnames were no
11393 longer being generated correctly during the dump of named objects.
11395 Modified the AML debugger to give a full display of if/while
11396 predicates instead of just one AML opcode at a time. (The
11397 predicate can have several nested ASL statements.) The old method
11398 was confusing during single stepping.
11400 Code and Data Size: Current core subsystem library sizes are shown
11401 below. These are the code and data sizes for the acpica.lib
11402 produced by the Microsoft Visual C++ 6.0 compiler, and these
11403 values do not include any ACPI driver or OSPM code. The debug
11404 version of the code includes the debug output trace mechanism and
11405 has a larger code and data size. Note that these values will vary
11406 depending on the efficiency of the compiler and the compiler
11407 options used during generation.
11409 Previous Release (12_18_01)
11410 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
11411 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
11413 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
11414 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
11418 Implemented fix for PIIX reverse throttling errata (Processor
11421 Added new Limit interface (Processor and Thermal drivers)
11423 New thermal policy (Thermal driver)
11425 Many updates to /proc
11427 Battery "low" event support (Battery driver)
11429 Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers)
11431 IA32 - IA64 initialization unification, no longer experimental
11433 Menuconfig options redesigned
11435 3) ASL Compiler, version X2037:
11437 Implemented several new output features to simplify integration of
11438 AML code into firmware: 1) Output the AML in C source code with
11439 labels for each named ASL object. The original ASL source code
11440 is interleaved as C comments. 2) Output the AML in ASM source code
11441 with labels and interleaved ASL source. 3) Output the AML in
11442 raw hex table form, in either C or ASM.
11444 Implemented support for optional string parameters to the
11445 LoadTable operator.
11447 Completed support for embedded escape sequences within string
11448 literals. The compiler now supports all single character escapes
11449 as well as the Octal and Hex escapes. Note: the insertion of a
11450 null byte into a string literal (via the hex/octal escape) causes
11451 the string to be immediately terminated. A warning is issued.
11453 Fixed a problem where incorrect AML was generated for the case
11454 where an ASL namepath consists of a single parent prefix (
11456 ) with no trailing name segments.
11458 The compiler has been successfully generated with a 64-bit C
11464 ----------------------------------------
11465 Summary of changes for this label: 12_18_01
11469 Enhanced blacklist with reason and severity fields. Any table's
11470 signature may now be used to identify a blacklisted system.
11472 Call _PIC control method to inform the firmware which interrupt
11473 model the OS is using. Turn on any disabled link devices.
11475 Cleaned up busmgr /proc error handling (Andreas Dilger)
11477 2) ACPI CA Core Subsystem:
11479 Implemented ACPI 2.0 semantics for the "Break" operator (Exit from
11482 Completed implementation of the ACPI 2.0 "Continue",
11483 "ConcatenateResTemplate", "DataTableRegion", and "LoadTable"
11484 operators. All new ACPI 2.0 operators are now implemented in both
11485 the ASL compiler and the AML interpreter. The only remaining ACPI
11486 2.0 task is support for the String data type in the DerefOf
11487 operator. Fixed a problem with AcquireMutex where the status code
11488 was lost if the caller had to actually wait for the mutex.
11490 Increased the maximum ASL Field size from 64K bits to 4G bits.
11492 Completed implementation of the external Global Lock interfaces --
11493 AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and
11494 Handler parameters were added.
11496 Completed another pass at removing warnings and issues when
11497 compiling with 64-bit compilers. The code now compiles cleanly
11498 with the Intel 64-bit C/C++ compiler. Most notably, the pointer
11499 add and subtract (diff) macros have changed considerably.
11502 Created and deployed a new ACPI_SIZE type that is 64-bits wide on
11503 64-bit platforms, 32-bits on all others. This type is used
11504 wherever memory allocation and/or the C sizeof() operator is used,
11505 and affects the OSL memory allocation interfaces AcpiOsAllocate
11506 and AcpiOsCallocate.
11508 Implemented sticky user breakpoints in the AML debugger.
11510 Code and Data Size: Current core subsystem library sizes are shown
11511 below. These are the code and data sizes for the acpica.lib
11512 produced by the Microsoft Visual C++ 6.0 compiler, and these
11513 values do not include any ACPI driver or OSPM code. The debug
11514 version of the code includes the debug output trace mechanism and
11515 has a larger code and data size. Note that these values will vary
11516 depending on the efficiency of the compiler and the compiler
11517 options used during generation.
11519 Previous Release (12_05_01)
11520 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
11521 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
11523 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
11524 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
11526 3) ASL Compiler, version X2034:
11528 Now checks for (and generates an error if detected) the use of a
11529 Break or Continue statement without an enclosing While statement.
11532 Successfully generated the compiler with the Intel 64-bit C
11535 ----------------------------------------
11536 Summary of changes for this label: 12_05_01
11538 1) ACPI CA Core Subsystem:
11540 The ACPI 2.0 CopyObject operator is fully implemented. This
11541 operator creates a new copy of an object (and is also used to
11542 bypass the "implicit conversion" mechanism of the Store operator.)
11544 The ACPI 2.0 semantics for the SizeOf operator are fully
11545 implemented. The change is that performing a SizeOf on a
11546 reference object causes an automatic dereference of the object to
11547 tha actual value before the size is evaluated. This behavior was
11548 undefined in ACPI 1.0.
11550 The ACPI 2.0 semantics for the Extended IRQ resource descriptor
11551 have been implemented. The interrupt polarity and mode are now
11554 Fixed a problem where ASL Constants (Zero, One, Ones, Revision)
11555 appearing in Package objects were not properly converted to
11556 integers when the internal Package was converted to an external
11557 object (via the AcpiEvaluateObject interface.)
11559 Fixed a problem with the namespace object deletion mechanism for
11560 objects created by control methods. There were two parts to this
11561 problem: 1) Objects created during the initialization phase method
11562 parse were not being deleted, and 2) The object owner ID mechanism
11563 to track objects was broken.
11565 Fixed a problem where the use of the ASL Scope operator within a
11566 control method would result in an invalid opcode exception.
11568 Fixed a problem introduced in the previous label where the buffer
11569 length required for the _PRT structure was not being returned
11572 Code and Data Size: Current core subsystem library sizes are shown
11573 below. These are the code and data sizes for the acpica.lib
11574 produced by the Microsoft Visual C++ 6.0 compiler, and these
11575 values do not include any ACPI driver or OSPM code. The debug
11576 version of the code includes the debug output trace mechanism and
11577 has a larger code and data size. Note that these values will vary
11578 depending on the efficiency of the compiler and the compiler
11579 options used during generation.
11581 Previous Release (11_20_01)
11582 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
11583 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
11586 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
11587 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
11591 Updated all files to apply cleanly against 2.4.16.
11593 Added basic PCI Interrupt Routing Table (PRT) support for IA32
11594 (acpi_pci.c), and unified the PRT code for IA32 and IA64. This
11595 version supports both static and dyanmic PRT entries, but dynamic
11596 entries are treated as if they were static (not yet
11597 reconfigurable). Architecture- specific code to use this data is
11598 absent on IA32 but should be available shortly.
11600 Changed the initialization sequence to start the ACPI interpreter
11601 (acpi_init) prior to initialization of the PCI driver (pci_init)
11602 in init/main.c. This ordering is required to support PRT and
11603 facilitate other (future) enhancement. A side effect is that the
11604 ACPI bus driver and certain device drivers can no longer be loaded
11607 Modified the 'make menuconfig' options to allow PCI Interrupt
11608 Routing support to be included without the ACPI Bus and other
11611 3) ASL Compiler, version X2033:
11613 Fixed some issues with the use of the new CopyObject and
11614 DataTableRegion operators. Both are fully functional.
11616 ----------------------------------------
11617 Summary of changes for this label: 11_20_01
11619 20 November 2001. Summary of changes for this release.
11621 1) ACPI CA Core Subsystem:
11623 Updated Index support to match ACPI 2.0 semantics. Storing a
11624 Integer, String, or Buffer to an Index of a Buffer will store only
11625 the least-significant byte of the source to the Indexed buffer
11626 byte. Multiple writes are not performed.
11628 Fixed a problem where the access type used in an AccessAs ASL
11629 operator was not recorded correctly into the field object.
11631 Fixed a problem where ASL Event objects were created in a
11632 signalled state. Events are now created in an unsignalled state.
11634 The internal object cache is now purged after table loading and
11635 initialization to reduce the use of dynamic kernel memory -- on
11636 the assumption that object use is greatest during the parse phase
11637 of the entire table (versus the run-time use of individual control
11640 ACPI 2.0 variable-length packages are now fully operational.
11642 Code and Data Size: Code and Data optimizations have permitted new
11643 feature development with an actual reduction in the library size.
11644 Current core subsystem library sizes are shown below. These are
11645 the code and data sizes for the acpica.lib produced by the
11646 Microsoft Visual C++ 6.0 compiler, and these values do not include
11647 any ACPI driver or OSPM code. The debug version of the code
11648 includes the debug output trace mechanism and has a larger code
11649 and data size. Note that these values will vary depending on the
11650 efficiency of the compiler and the compiler options used during
11653 Previous Release (11_09_01):
11654 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
11655 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
11658 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
11659 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
11663 Enhanced the ACPI boot-time initialization code to allow the use
11664 of Local APIC tables for processor enumeration on IA-32, and to
11665 pave the way for a fully MPS-free boot (on SMP systems) in the
11666 near future. This functionality replaces
11667 arch/i386/kernel/acpitables.c, which was introduced in an earlier
11668 2.4.15-preX release. To enable this feature you must add
11669 "acpi_boot=on" to the kernel command line -- see the help entry
11670 for CONFIG_ACPI_BOOT for more information. An IA-64 release is in
11673 Restructured the configuration options to allow boot-time table
11674 parsing support without inclusion of the ACPI Interpreter (and
11677 NOTE: This release does not include fixes for the reported events,
11678 power-down, and thermal passive cooling issues (coming soon).
11682 Added additional typechecking for Fields within restricted access
11683 Operation Regions. All fields within EC and CMOS regions must be
11684 declared with ByteAcc. All fields withing SMBus regions must be
11685 declared with the BufferAcc access type.
11687 Fixed a problem where the listing file output of control methods
11688 no longer interleaved the actual AML code with the ASL source
11694 ----------------------------------------
11695 Summary of changes for this label: 11_09_01
11697 1) ACPI CA Core Subsystem:
11699 Implemented ACPI 2.0-defined support for writes to fields with a
11700 Buffer, String, or Integer source operand that is smaller than the
11701 target field. In these cases, the source operand is zero-extended
11702 to fill the target field.
11704 Fixed a problem where a Field starting bit offset (within the
11705 parent operation region) was calculated incorrectly if the
11707 alignment of the field differed from the access width. This
11708 affected CreateWordField, CreateDwordField, CreateQwordField, and
11709 possibly other fields that use the "AccessAny" keyword.
11711 Fixed a problem introduced in the 11_02_01 release where indirect
11712 stores through method arguments did not operate correctly.
11716 Implemented boot-time ACPI table parsing support
11717 (CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code
11718 facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than
11719 legacy BIOS interfaces (e.g. MPS) for the configuration of system
11720 processors, memory, and interrupts during setup_arch(). Note that
11721 this patch does not include the required architecture-specific
11722 changes required to apply this information -- subsequent patches
11723 will be posted for both IA32 and IA64 to achieve this.
11725 Added low-level sleep support for IA32 platforms, courtesy of Pat
11726 Mochel. This allows IA32 systems to transition to/from various
11727 sleeping states (e.g. S1, S3), although the lack of a centralized
11728 driver model and power-manageable drivers will prevent its
11729 (successful) use on most systems.
11731 Revamped the ACPI 'menuconfig' layout: created new "ACPI Support"
11732 submenu, unified IA32 and IA64 options, added new "Boot using ACPI
11733 tables" option, etc.
11735 Increased the default timeout for the EC driver from 1ms to 10ms
11736 (1000 cycles of 10us) to try to address AE_TIME errors during EC
11739 ----------------------------------------
11740 Summary of changes for this label: 11_02_01
11742 1) ACPI CA Core Subsystem:
11744 ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access
11745 (QWordAcc keyword). All ACPI 2.0 64-bit support is now
11748 OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required
11749 changes to support ACPI 2.0 Qword field access. Read/Write
11750 PciConfiguration(), Read/Write Memory(), and Read/Write Port() now
11751 accept an ACPI_INTEGER (64 bits) as the value parameter. Also,
11752 the value parameter for the address space handler interface is now
11753 an ACPI_INTEGER. OSL implementations of these interfaces must now
11754 handle the case where the Width parameter is 64.
11756 Index Fields: Fixed a problem where unaligned bit assembly and
11757 disassembly for IndexFields was not supported correctly.
11759 Index and Bank Fields: Nested Index and Bank Fields are now
11760 supported. During field access, a check is performed to ensure
11761 that the value written to an Index or Bank register is not out of
11762 the range of the register. The Index (or Bank) register is
11763 written before each access to the field data. Future support will
11764 include allowing individual IndexFields to be wider than the
11765 DataRegister width.
11767 Fields: Fixed a problem where the AML interpreter was incorrectly
11768 attempting to write beyond the end of a Field/OpRegion. This was
11769 a boundary case that occurred when a DWORD field was written to a
11770 BYTE access OpRegion, forcing multiple writes and causing the
11771 interpreter to write one datum too many.
11773 Fields: Fixed a problem with Field/OpRegion access where the
11774 starting bit address of a field was incorrectly calculated if the
11775 current access type was wider than a byte (WordAcc, DwordAcc, or
11778 Fields: Fixed a problem where forward references to individual
11779 FieldUnits (individual Field names within a Field definition) were
11780 not resolved during the AML table load.
11782 Fields: Fixed a problem where forward references from a Field
11783 definition to the parent Operation Region definition were not
11784 resolved during the AML table load.
11786 Fields: Duplicate FieldUnit names within a scope are now detected
11787 during AML table load.
11789 Acpi Interfaces: Fixed a problem where the AcpiGetName() interface
11790 returned an incorrect name for the root node.
11792 Code and Data Size: Code and Data optimizations have permitted new
11793 feature development with an actual reduction in the library size.
11794 Current core subsystem library sizes are shown below. These are
11795 the code and data sizes for the acpica.lib produced by the
11796 Microsoft Visual C++ 6.0 compiler, and these values do not include
11797 any ACPI driver or OSPM code. The debug version of the code
11798 includes the debug output trace mechanism and has a larger code
11799 and data size. Note that these values will vary depending on the
11800 efficiency of the compiler and the compiler options used during
11803 Previous Release (10_18_01):
11804 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
11805 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
11808 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
11809 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
11813 Improved /proc processor output (Pavel Machek) Re-added
11814 MODULE_LICENSE("GPL") to all modules.
11816 3) ASL Compiler version X2030:
11818 Duplicate FieldUnit names within a scope are now detected and
11823 Programmer Reference updated to reflect OSL and address space
11824 handler interface changes described above.
11826 ----------------------------------------
11827 Summary of changes for this label: 10_18_01
11829 ACPI CA Core Subsystem:
11831 Fixed a problem with the internal object reference count mechanism
11832 that occasionally caused premature object deletion. This resolves
11833 all of the outstanding problem reports where an object is deleted
11834 in the middle of an interpreter evaluation. Although this problem
11835 only showed up in rather obscure cases, the solution to the
11836 problem involved an adjustment of all reference counts involving
11837 objects attached to namespace nodes.
11839 Fixed a problem with Field support in the interpreter where
11840 writing to an aligned field whose length is an exact multiple (2
11841 or greater) of the field access granularity would cause an attempt
11842 to write beyond the end of the field.
11844 The top level AML opcode execution functions within the
11845 interpreter have been renamed with a more meaningful and
11846 consistent naming convention. The modules exmonad.c and
11847 exdyadic.c were eliminated. New modules are exoparg1.c,
11848 exoparg2.c, exoparg3.c, and exoparg6.c.
11850 Support for the ACPI 2.0 "Mid" ASL operator has been implemented.
11852 Fixed a problem where the AML debugger was causing some internal
11853 objects to not be deleted during subsystem termination.
11855 Fixed a problem with the external AcpiEvaluateObject interface
11856 where the subsystem would fault if the named object to be
11857 evaluated refered to a constant such as Zero, Ones, etc.
11859 Fixed a problem with IndexFields and BankFields where the
11860 subsystem would fault if the index, data, or bank registers were
11861 not defined in the same scope as the field itself.
11863 Added printf format string checking for compilers that support
11864 this feature. Corrected more than 50 instances of issues with
11865 format specifiers within invocations of ACPI_DEBUG_PRINT
11866 throughout the core subsystem code.
11868 The ASL "Revision" operator now returns the ACPI support level
11869 implemented in the core - the value "2" since the ACPI 2.0 support
11870 is more than 50% implemented.
11872 Enhanced the output of the AML debugger "dump namespace" command
11873 to output in a more human-readable form.
11875 Current core subsystem library code sizes are shown below. These
11877 are the code and data sizes for the acpica.lib produced by the
11878 Microsoft Visual C++ 6.0 compiler, and these values do not include
11879 any ACPI driver or OSPM code. The debug version of the code
11880 includes the full debug trace mechanism -- leading to a much
11882 larger code and data size. Note that these values will vary
11883 depending on the efficiency of the compiler and the compiler
11884 options used during generation.
11886 Previous Label (09_20_01):
11887 Non-Debug Version: 65K Code, 5K Data, 70K Total
11888 Debug Version: 138K Code, 58K Data, 196K Total
11892 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
11893 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
11897 Implemented a "Bad BIOS Blacklist" to track machines that have
11898 known ASL/AML problems.
11900 Enhanced the /proc interface for the thermal zone driver and added
11901 support for _HOT (the critical suspend trip point). The 'info'
11902 file now includes threshold/policy information, and allows setting
11903 of _SCP (cooling preference) and _TZP (polling frequency) values
11904 to the 'info' file. Examples: "echo tzp=5 > info" sets the polling
11905 frequency to 5 seconds, and "echo scp=1 > info" sets the cooling
11906 preference to the passive/quiet mode (if supported by the ASL).
11908 Implemented a workaround for a gcc bug that resuted in an OOPs
11909 when loading the control method battery driver.
11911 ----------------------------------------
11912 Summary of changes for this label: 09_20_01
11914 ACPI CA Core Subsystem:
11916 The AcpiEnableEvent and AcpiDisableEvent interfaces have been
11917 modified to allow individual GPE levels to be flagged as wake-
11918 enabled (i.e., these GPEs are to remain enabled when the platform
11921 The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now
11922 support wake-enabled GPEs. This means that upon entering the
11923 sleep state, all GPEs that are not wake-enabled are disabled.
11924 When leaving the sleep state, these GPEs are reenabled.
11926 A local double-precision divide/modulo module has been added to
11927 enhance portability to OS kernels where a 64-bit math library is
11928 not available. The new module is "utmath.c".
11930 Several optimizations have been made to reduce the use of CPU
11931 stack. Originally over 2K, the maximum stack usage is now below
11932 2K at 1860 bytes (1.82k)
11934 Fixed a problem with the AcpiGetFirmwareTable interface where the
11935 root table pointer was not mapped into a logical address properly.
11937 Fixed a problem where a NULL pointer was being dereferenced in the
11938 interpreter code for the ASL Notify operator.
11940 Fixed a problem where the use of the ASL Revision operator
11941 returned an error. This operator now returns the current version
11942 of the ACPI CA core subsystem.
11944 Fixed a problem where objects passed as control method parameters
11945 to AcpiEvaluateObject were always deleted at method termination.
11946 However, these objects may end up being stored into the namespace
11947 by the called method. The object reference count mechanism was
11948 applied to these objects instead of a force delete.
11950 Fixed a problem where static strings or buffers (contained in the
11951 AML code) that are declared as package elements within the ASL
11952 code could cause a fault because the interpreter would attempt to
11953 delete them. These objects are now marked with the "static
11954 object" flag to prevent any attempt to delete them.
11956 Implemented an interpreter optimization to use operands directly
11957 from the state object instead of extracting the operands to local
11958 variables. This reduces stack use and code size, and improves
11961 The module exxface.c was eliminated as it was an unnecessary extra
11964 Current core subsystem library code sizes are shown below. These
11965 are the code and data sizes for the acpica.lib produced by the
11966 Microsoft Visual C++ 6.0 compiler, and these values do not include
11967 any ACPI driver or OSPM code. The debug version of the code
11968 includes the full debug trace mechanism -- leading to a much
11969 larger code and data size. Note that these values will vary
11970 depending on the efficiency of the compiler and the compiler
11971 options used during generation.
11973 Non-Debug Version: 65K Code, 5K Data, 70K Total
11974 (Previously 69K) Debug Version: 138K Code, 58K Data, 196K
11975 Total (Previously 195K)
11979 Support for ACPI 2.0 64-bit integers has been added. All ACPI
11980 Integer objects are now 64 bits wide
11982 All Acpi data types and structures are now in lower case. Only
11983 Acpi macros are upper case for differentiation.
11987 Changes to the external interfaces as described above.
11989 ----------------------------------------
11990 Summary of changes for this label: 08_31_01
11992 ACPI CA Core Subsystem:
11994 A bug with interpreter implementation of the ASL Divide operator
11995 was found and fixed. The implicit function return value (not the
11996 explicit store operands) was returning the remainder instead of
11997 the quotient. This was a longstanding bug and it fixes several
11998 known outstanding issues on various platforms.
12000 The ACPI_DEBUG_PRINT and function trace entry/exit macros have
12001 been further optimized for size. There are 700 invocations of the
12002 DEBUG_PRINT macro alone, so each optimization reduces the size of
12003 the debug version of the subsystem significantly.
12005 A stack trace mechanism has been implemented. The maximum stack
12006 usage is about 2K on 32-bit platforms. The debugger command "stat
12007 stack" will display the current maximum stack usage.
12009 All public symbols and global variables within the subsystem are
12010 now prefixed with the string "Acpi". This keeps all of the
12011 symbols grouped together in a kernel map, and avoids conflicts
12012 with other kernel subsystems.
12014 Most of the internal fixed lookup tables have been moved into the
12015 code segment via the const operator.
12017 Several enhancements have been made to the interpreter to both
12018 reduce the code size and improve performance.
12020 Current core subsystem library code sizes are shown below. These
12021 are the code and data sizes for the acpica.lib produced by the
12022 Microsoft Visual C++ 6.0 compiler, and these values do not include
12023 any ACPI driver or OSPM code. The debug version of the code
12024 includes the full debug trace mechanism which contains over 700
12025 invocations of the DEBUG_PRINT macro, 500 function entry macro
12026 invocations, and over 900 function exit macro invocations --
12027 leading to a much larger code and data size. Note that these
12028 values will vary depending on the efficiency of the compiler and
12029 the compiler options used during generation.
12031 Non-Debug Version: 64K Code, 5K Data, 69K Total
12032 Debug Version: 137K Code, 58K Data, 195K Total
12036 Implemented wbinvd() macro, pending a kernel-wide definition.
12038 Fixed /proc/acpi/event to handle poll() and short reads.
12040 ASL Compiler, version X2026:
12042 Fixed a problem introduced in the previous label where the AML
12044 code emitted for package objects produced packages with zero
12047 ----------------------------------------
12048 Summary of changes for this label: 08_16_01
12050 ACPI CA Core Subsystem:
12052 The following ACPI 2.0 ASL operators have been implemented in the
12053 AML interpreter (These are already supported by the Intel ASL
12054 compiler): ToDecimalString, ToHexString, ToString, ToInteger, and
12055 ToBuffer. Support for 64-bit AML constants is implemented in the
12056 AML parser, debugger, and disassembler.
12058 The internal memory tracking mechanism (leak detection code) has
12059 been upgraded to reduce the memory overhead (a separate tracking
12060 block is no longer allocated for each memory allocation), and now
12061 supports all of the internal object caches.
12063 The data structures and code for the internal object caches have
12064 been coelesced and optimized so that there is a single cache and
12065 memory list data structure and a single group of functions that
12066 implement generic cache management. This has reduced the code
12067 size in both the debug and release versions of the subsystem.
12069 The DEBUG_PRINT macro(s) have been optimized for size and replaced
12070 by ACPI_DEBUG_PRINT. The syntax for this macro is slightly
12071 different, because it generates a single call to an internal
12072 function. This results in a savings of about 90 bytes per
12073 invocation, resulting in an overall code and data savings of about
12074 16% in the debug version of the subsystem.
12078 Fixed C3 disk corruption problems and re-enabled C3 on supporting
12081 Integrated low-level sleep code by Patrick Mochel.
12083 Further tweaked source code Linuxization.
12089 Support for ACPI 2.0 variable length packages is fixed/completed.
12091 Fixed a problem where the optional length parameter for the ACPI
12092 2.0 ToString operator.
12094 Fixed multiple extraneous error messages when a syntax error is
12095 detected within the declaration line of a control method.
12097 ----------------------------------------
12098 Summary of changes for this label: 07_17_01
12100 ACPI CA Core Subsystem:
12102 Added a new interface named AcpiGetFirmwareTable to obtain any
12103 ACPI table via the ACPI signature. The interface can be called at
12104 any time during kernel initialization, even before the kernel
12105 virtual memory manager is initialized and paging is enabled. This
12106 allows kernel subsystems to obtain ACPI tables very early, even
12107 before the ACPI CA subsystem is initialized.
12109 Fixed a problem where Fields defined with the AnyAcc attribute
12110 could be resolved to the incorrect address under the following
12111 conditions: 1) the field width is larger than 8 bits and 2) the
12112 parent operation region is not defined on a DWORD boundary.
12114 Fixed a problem where the interpreter is not being locked during
12115 namespace initialization (during execution of the _INI control
12116 methods), causing an error when an attempt is made to release it
12119 ACPI 2.0 support in the AML Interpreter has begun and will be
12120 ongoing throughout the rest of this year. In this label, The Mod
12121 operator is implemented.
12123 Added a new data type to contain full PCI addresses named
12124 ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device,
12125 and Function values.
12129 Enhanced the Linux version of the source code to change most
12130 capitalized ACPI type names to lowercase. For example, all
12131 instances of ACPI_STATUS are changed to acpi_status. This will
12132 result in a large diff, but the change is strictly cosmetic and
12133 aligns the CA code closer to the Linux coding standard.
12137 The interfaces to the PCI configuration space have been changed to
12138 add the PCI Segment number and to split the single 32-bit combined
12139 DeviceFunction field into two 16-bit fields. This was
12140 accomplished by moving the four values that define an address in
12141 PCI configuration space (segment, bus, device, and function) to
12142 the new ACPI_PCI_ID structure.
12144 The changes to the PCI configuration space interfaces led to a
12145 reexamination of the complete set of address space access
12146 interfaces for PCI, I/O, and Memory. The previously existing 18
12147 interfaces have proven difficult to maintain (any small change
12148 must be propagated across at least 6 interfaces) and do not easily
12149 allow for future expansion to 64 bits if necessary. Also, on some
12150 systems, it would not be appropriate to demultiplex the access
12151 width (8, 16, 32,or 64) before calling the OSL if the
12152 corresponding native OS interfaces contain a similar access width
12153 parameter. For these reasons, the 18 address space interfaces
12154 have been replaced by these 6 new ones:
12156 AcpiOsReadPciConfiguration
12157 AcpiOsWritePciConfiguration
12163 Added a new interface named AcpiOsGetRootPointer to allow the OSL
12164 to perform the platform and/or OS-specific actions necessary to
12165 obtain the ACPI RSDP table pointer. On IA-32 platforms, this
12166 interface will simply call down to the CA core to perform the low-
12167 memory search for the table. On IA-64, the RSDP is obtained from
12168 EFI. Migrating this interface to the OSL allows the CA core to
12170 remain OS and platform independent.
12172 Added a new interface named AcpiOsSignal to provide a generic
12173 "function code and pointer" interface for various miscellaneous
12174 signals and notifications that must be made to the host OS. The
12175 first such signals are intended to support the ASL Fatal and
12176 Breakpoint operators. In the latter case, the AcpiOsBreakpoint
12177 interface has been obsoleted.
12179 The definition of the AcpiFormatException interface has been
12180 changed to simplify its use. The caller no longer must supply a
12181 buffer to the call; A pointer to a const string is now returned
12182 directly. This allows the call to be easily used in printf
12183 statements, etc. since the caller does not have to manage a local
12187 ASL Compiler, Version X2025:
12189 The ACPI 2.0 Switch/Case/Default operators have been implemented
12190 and are fully functional. They will work with all ACPI 1.0
12191 interpreters, since the operators are simply translated to If/Else
12194 The ACPI 2.0 ElseIf operator is implemented and will also work
12195 with 1.0 interpreters, for the same reason.
12197 Implemented support for ACPI 2.0 variable-length packages. These
12198 packages have a separate opcode, and their size is determined by
12199 the interpreter at run-time.
12201 Documentation The ACPI CA Programmer Reference has been updated to
12202 reflect the new interfaces and changes to existing interfaces.
12204 ------------------------------------------
12205 Summary of changes for this label: 06_15_01
12207 ACPI CA Core Subsystem:
12209 Fixed a problem where a DWORD-accessed field within a Buffer
12210 object would get its byte address inadvertently rounded down to
12211 the nearest DWORD. Buffers are always Byte-accessible.
12213 ASL Compiler, version X2024:
12215 Fixed a problem where the Switch() operator would either fault or
12216 hang the compiler. Note however, that the AML code for this ACPI
12217 2.0 operator is not yet implemented.
12219 Compiler uses the new AcpiOsGetTimer interface to obtain compile
12222 Implementation of the CreateField operator automatically converts
12223 a reference to a named field within a resource descriptor from a
12224 byte offset to a bit offset if required.
12226 Added some missing named fields from the resource descriptor
12227 support. These are the names that are automatically created by the
12228 compiler to reference fields within a descriptor. They are only
12229 valid at compile time and are not passed through to the AML
12232 Resource descriptor named fields are now typed as Integers and
12233 subject to compile-time typechecking when used in expressions.
12235 ------------------------------------------
12236 Summary of changes for this label: 05_18_01
12238 ACPI CA Core Subsystem:
12240 Fixed a couple of problems in the Field support code where bits
12241 from adjacent fields could be returned along with the proper field
12242 bits. Restructured the field support code to improve performance,
12243 readability and maintainability.
12245 New DEBUG_PRINTP macro automatically inserts the procedure name
12246 into the output, saving hundreds of copies of procedure name
12247 strings within the source, shrinking the memory footprint of the
12248 debug version of the core subsystem.
12250 Source Code Structure:
12252 The source code directory tree was restructured to reflect the
12253 current organization of the component architecture. Some files
12254 and directories have been moved and/or renamed.
12258 Fixed leaking kacpidpc processes.
12260 Fixed queueing event data even when /proc/acpi/event is not
12263 ASL Compiler, version X2020:
12265 Memory allocation performance enhancement - over 24X compile time
12266 improvement on large ASL files. Parse nodes and namestring
12267 buffers are now allocated from a large internal compiler buffer.
12269 The temporary .SRC file is deleted unless the "-s" option is
12272 The "-d" debug output option now sends all output to the .DBG file
12273 instead of the console.
12275 "External" second parameter is now optional
12277 "ElseIf" syntax now properly allows the predicate
12279 Last operand to "Load" now recognized as a Target operand
12281 Debug object can now be used anywhere as a normal object.
12283 ResourceTemplate now returns an object of type BUFFER
12285 EISAID now returns an object of type INTEGER
12287 "Index" now works with a STRING operand
12289 "LoadTable" now accepts optional parameters
12291 "ToString" length parameter is now optional
12293 "Interrupt (ResourceType," parse error fixed.
12295 "Register" with a user-defined region space parse error fixed
12297 Escaped backslash at the end of a string ("\\") scan/parse error
12300 "Revision" is now an object of type INTEGER.
12304 ------------------------------------------
12305 Summary of changes for this label: 05_02_01
12309 /proc/acpi/event now blocks properly.
12311 Removed /proc/sys/acpi. You can still dump your DSDT from
12314 ACPI CA Core Subsystem:
12316 Fixed a problem introduced in the previous label where some of the
12317 "small" resource descriptor types were not recognized.
12319 Improved error messages for the case where an ASL Field is outside
12320 the range of the parent operation region.
12322 ASL Compiler, version X2018:
12325 Added error detection for ASL Fields that extend beyond the length
12326 of the parent operation region (only if the length of the region
12327 is known at compile time.) This includes fields that have a
12328 minimum access width that is smaller than the parent region, and
12329 individual field units that are partially or entirely beyond the
12330 extent of the parent.
12334 ------------------------------------------
12335 Summary of changes for this label: 04_27_01
12337 ACPI CA Core Subsystem:
12339 Fixed a problem where the namespace mutex could be released at the
12340 wrong time during execution of AcpiRemoveAddressSpaceHandler.
12342 Added optional thread ID output for debug traces, to simplify
12343 debugging of multiple threads. Added context switch notification
12344 when the debug code realizes that a different thread is now
12345 executing ACPI code.
12347 Some additional external data types have been prefixed with the
12348 string "ACPI_" for consistency. This may effect existing code.
12349 The data types affected are the external callback typedefs - e.g.,
12351 WALK_CALLBACK becomes ACPI_WALK_CALLBACK.
12355 Fixed an issue with the OSL semaphore implementation where a
12356 thread was waking up with an error from receiving a SIGCHLD
12359 Linux version of ACPI CA now uses the system C library for string
12360 manipulation routines instead of a local implementation.
12362 Cleaned up comments and removed TBDs.
12364 ASL Compiler, version X2017:
12366 Enhanced error detection and reporting for all file I/O
12371 Programmer Reference updated to version 1.06.
12375 ------------------------------------------
12376 Summary of changes for this label: 04_13_01
12378 ACPI CA Core Subsystem:
12380 Restructured support for BufferFields and RegionFields.
12381 BankFields support is now fully operational. All known 32-bit
12382 limitations on field sizes have been removed. Both BufferFields
12383 and (Operation) RegionFields are now supported by the same field
12386 Resource support now supports QWORD address and IO resources. The
12387 16/32/64 bit address structures and the Extended IRQ structure
12388 have been changed to properly handle Source Resource strings.
12390 A ThreadId of -1 is now used to indicate a "mutex not acquired"
12391 condition internally and must never be returned by AcpiOsThreadId.
12392 This reserved value was changed from 0 since Unix systems allow a
12397 Driver code reorganized to enhance portability
12399 Added a kernel configuration option to control ACPI_DEBUG
12401 Fixed the EC driver to honor _GLK.
12403 ASL Compiler, version X2016:
12405 Fixed support for the "FixedHw" keyword. Previously, the FixedHw
12406 address space was set to 0, not 0x7f as it should be.
12408 ------------------------------------------
12409 Summary of changes for this label: 03_13_01
12411 ACPI CA Core Subsystem:
12413 During ACPI initialization, the _SB_._INI method is now run if
12416 Notify handler fix - notifies are deferred until the parent method
12417 completes execution. This fixes the "mutex already acquired"
12418 issue seen occasionally.
12420 Part of the "implicit conversion" rules in ACPI 2.0 have been
12421 found to cause compatibility problems with existing ASL/AML. The
12422 convert "result-to-target-type" implementation has been removed
12423 for stores to method Args and Locals. Source operand conversion
12424 is still fully implemented. Possible changes to ACPI 2.0
12425 specification pending.
12427 Fix to AcpiRsCalculatePciRoutingTableLength to return correct
12430 Fix for compiler warnings for 64-bit compiles.
12434 /proc output aligned for easier parsing.
12436 Release-version compile problem fixed.
12438 New kernel configuration options documented in Configure.help.
12440 IBM 600E - Fixed Sleep button may generate "Invalid <NULL>
12445 Power resource driver integrated with bus manager.
12447 Fixed kernel fault during active cooling for thermal zones.
12451 The source code tree has been restructured.
12455 ------------------------------------------
12456 Summary of changes for this label: 03_02_01
12458 Linux OS Services Layer (OSL):
12460 Major revision of all Linux-specific code.
12462 Modularized all ACPI-specific drivers.
12464 Added new thermal zone and power resource drivers.
12466 Revamped /proc interface (new functionality is under /proc/acpi).
12468 New kernel configuration options.
12470 Linux known issues:
12472 New kernel configuration options not documented in Configure.help
12476 Module dependencies not currently implemented. If used, they
12477 should be loaded in this order: busmgr, power, ec, system,
12478 processor, battery, ac_adapter, button, thermal.
12480 Modules will not load if CONFIG_MODVERSION is set.
12482 IBM 600E - entering S5 may reboot instead of shutting down.
12484 IBM 600E - Sleep button may generate "Invalid <NULL> context"
12487 Some systems may fail with "execution mutex already acquired"
12490 ACPI CA Core Subsystem:
12492 Added a new OSL Interface, AcpiOsGetThreadId. This was required
12493 for the deadlock detection code. Defined to return a non-zero, 32-
12494 bit thread ID for the currently executing thread. May be a non-
12495 zero constant integer on single-thread systems.
12497 Implemented deadlock detection for internal subsystem mutexes. We
12498 may add conditional compilation for this code (debug only) later.
12500 ASL/AML Mutex object semantics are now fully supported. This
12501 includes multiple acquires/releases by owner and support for the
12503 Mutex SyncLevel parameter.
12505 A new "Force Release" mechanism automatically frees all ASL
12506 Mutexes that have been acquired but not released when a thread
12507 exits the interpreter. This forces conformance to the ACPI spec
12508 ("All mutexes must be released when an invocation exits") and
12509 prevents deadlocked ASL threads. This mechanism can be expanded
12510 (later) to monitor other resource acquisitions if OEM ASL code
12511 continues to misbehave (which it will).
12513 Several new ACPI exception codes have been added for the Mutex
12516 Recursive method calls are now allowed and supported (the ACPI
12517 spec does in fact allow recursive method calls.) The number of
12518 recursive calls is subject to the restrictions imposed by the
12519 SERIALIZED method keyword and SyncLevel (ACPI 2.0) method
12522 Implemented support for the SyncLevel parameter for control
12523 methods (ACPI 2.0 feature)
12525 Fixed a deadlock problem when multiple threads attempted to use
12528 Fixed a problem where the string length of a String package
12529 element was not always set in a package returned from
12530 AcpiEvaluateObject.
12532 Fixed a problem where the length of a String package element was
12533 not always included in the length of the overall package returned
12534 from AcpiEvaluateObject.
12536 Added external interfaces (Acpi*) to the ACPI debug memory
12537 manager. This manager keeps a list of all outstanding
12538 allocations, and can therefore detect memory leaks and attempts to
12539 free memory blocks more than once. Useful for code such as the
12540 power manager, etc. May not be appropriate for device drivers.
12541 Performance with the debug code enabled is slow.
12543 The ACPI Global Lock is now an optional hardware element.
12545 ASL Compiler Version X2015:
12547 Integrated changes to allow the compiler to be generated on
12548 multiple platforms.
12550 Linux makefile added to generate the compiler on Linux
12554 All platform-specific headers have been moved to their own
12555 subdirectory, Include/Platform.
12557 New source file added, Interpreter/ammutex.c
12559 New header file, Include/acstruct.h
12563 The programmer reference has been updated for the following new
12564 interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree
12566 ------------------------------------------
12567 Summary of changes for this label: 02_08_01
12569 Core ACPI CA Subsystem: Fixed a problem where an error was
12570 incorrectly returned if the return resource buffer was larger than
12571 the actual data (in the resource interfaces).
12573 References to named objects within packages are resolved to the
12575 full pathname string before packages are returned directly (via
12576 the AcpiEvaluateObject interface) or indirectly via the resource
12579 Linux OS Services Layer (OSL):
12581 Improved /proc battery interface.
12584 Added C-state debugging output and other miscellaneous fixes.
12586 ASL Compiler Version X2014:
12588 All defined method arguments can now be used as local variables,
12589 including the ones that are not actually passed in as parameters.
12590 The compiler tracks initialization of the arguments and issues an
12591 exception if they are used without prior assignment (just like
12594 The -o option now specifies a filename prefix that is used for all
12595 output files, including the AML output file. Otherwise, the
12596 default behavior is as follows: 1) the AML goes to the file
12597 specified in the DSDT. 2) all other output files use the input
12598 source filename as the base.
12600 ------------------------------------------
12601 Summary of changes for this label: 01_25_01
12603 Core ACPI CA Subsystem: Restructured the implementation of object
12604 store support within the interpreter. This includes support for
12605 the Store operator as well as any ASL operators that include a
12608 Partially implemented support for Implicit Result-to-Target
12609 conversion. This is when a result object is converted on the fly
12610 to the type of an existing target object. Completion of this
12611 support is pending further analysis of the ACPI specification
12612 concerning this matter.
12614 CPU-specific code has been removed from the subsystem (hardware
12617 New Power Management Timer functions added
12619 Linux OS Services Layer (OSL): Moved system state transition code
12620 to the core, fixed it, and modified Linux OSL accordingly.
12622 Fixed C2 and C3 latency calculations.
12625 We no longer use the compilation date for the version message on
12626 initialization, but retrieve the version from AcpiGetSystemInfo().
12628 Incorporated for fix Sony VAIO machines.
12630 Documentation: The Programmer Reference has been updated and
12634 ASL Compiler: Version X2013: Fixed a problem where the line
12635 numbering and error reporting could get out of sync in the
12636 presence of multiple include files.
12638 ------------------------------------------
12639 Summary of changes for this label: 01_15_01
12641 Core ACPI CA Subsystem:
12643 Implemented support for type conversions in the execution of the
12644 ASL Concatenate operator (The second operand is converted to
12645 match the type of the first operand before concatenation.)
12647 Support for implicit source operand conversion is partially
12648 implemented. The ASL source operand types Integer, Buffer, and
12649 String are freely interchangeable for most ASL operators and are
12650 converted by the interpreter on the fly as required. Implicit
12651 Target operand conversion (where the result is converted to the
12652 target type before storing) is not yet implemented.
12654 Support for 32-bit and 64-bit BCD integers is implemented.
12656 Problem fixed where a field read on an aligned field could cause a
12657 read past the end of the field.
12659 New exception, AE_AML_NO_RETURN_VALUE, is returned when a method
12660 does not return a value, but the caller expects one. (The ASL
12661 compiler flags this as a warning.)
12666 1. Static typechecking of all operands is implemented. This
12667 prevents the use of invalid objects (such as using a Package where
12668 an Integer is required) at compile time instead of at interpreter
12670 2. The ASL source line is printed with ALL errors and warnings.
12671 3. Bug fix for source EOF without final linefeed.
12672 4. Debug option is split into a parse trace and a namespace trace.
12673 5. Namespace output option (-n) includes initial values for
12674 integers and strings.
12675 6. Parse-only option added for quick syntax checking.
12676 7. Compiler checks for duplicate ACPI name declarations
12679 1. Relaxed typechecking to allow interchangeability between
12680 strings, integers, and buffers. These types are now converted by
12681 the interpreter at runtime.
12682 2. Compiler reports time taken by each internal subsystem in the
12686 ------------------------------------------
12687 Summary of changes for this label: 12_14_00
12691 This is the first official release of the compiler. Since the
12692 compiler requires elements of the Core Subsystem, this label
12693 synchronizes everything.
12695 ------------------------------------------
12696 Summary of changes for this label: 12_08_00
12699 Fixed a problem where named references within the ASL definition
12700 of both OperationRegions and CreateXXXFields did not work
12701 properly. The symptom was an AE_AML_OPERAND_TYPE during
12702 initialization of the region/field. This is similar (but not
12703 related internally) to the problem that was fixed in the last
12706 Implemented both 32-bit and 64-bit support for the BCD ASL
12707 functions ToBCD and FromBCD.
12709 Updated all legal headers to include "2000" in the copyright
12712 ------------------------------------------
12713 Summary of changes for this label: 12_01_00
12715 Fixed a problem where method invocations within the ASL definition
12716 of both OperationRegions and CreateXXXFields did not work
12717 properly. The symptom was an AE_AML_OPERAND_TYPE during
12718 initialization of the region/field:
12720 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments
12721 [DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s)
12724 Fixed a problem where operators with more than one nested
12725 subexpression would fail. The symptoms were varied, by mostly
12726 AE_AML_OPERAND_TYPE errors. This was actually a rather serious
12727 problem that has gone unnoticed until now.
12729 Subtract (Add (1,2), Multiply (3,4))
12731 Fixed a problem where AcpiGetHandle didn't quite get fixed in the
12732 previous build (The prefix part of a relative path was handled
12735 Fixed a problem where Operation Region initialization failed if
12736 the operation region name was a "namepath" instead of a simple
12737 "nameseg". Symptom was an AE_NO_OPERAND error.
12739 Fixed a problem where an assignment to a local variable via the
12740 indirect RefOf mechanism only worked for the first such
12741 assignment. Subsequent assignments were ignored.
12743 ------------------------------------------
12744 Summary of changes for this label: 11_15_00
12746 ACPI 2.0 table support with backwards support for ACPI 1.0 and the
12747 0.71 extensions. Note: although we can read ACPI 2.0 BIOS tables,
12748 the AML interpreter does NOT have support for the new 2.0 ASL
12749 grammar terms at this time.
12751 All ACPI hardware access is via the GAS structures in the ACPI 2.0
12754 All physical memory addresses across all platforms are now 64 bits
12755 wide. Logical address width remains dependent on the platform
12758 AcpiOsMapMemory interface changed to a 64-bit physical address.
12760 The AML interpreter integer size is now 64 bits, as per the ACPI
12763 For backwards compatibility with ACPI 1.0, ACPI tables with a
12764 revision number less than 2 use 32-bit integers only.
12766 Fixed a problem where the evaluation of OpRegion operands did not
12767 always resolve them to numbers properly.
12769 ------------------------------------------
12770 Summary of changes for this label: 10_20_00
12772 Fix for CBN_._STA issue. This fix will allow correct access to
12773 CBN_ OpRegions when the _STA returns 0x8.
12775 Support to convert ACPI constants (Ones, Zeros, One) to actual
12776 values before a package object is returned
12778 Fix for method call as predicate to if/while construct causing
12779 incorrect if/while behavior
12781 Fix for Else block package lengths sometimes calculated wrong (if
12784 Fix for Processor object length field, was always zero
12786 Table load abort if FACP sanity check fails
12788 Fix for problem with Scope(name) if name already exists
12790 Warning emitted if a named object referenced cannot be found
12791 (resolved) during method execution.
12797 ------------------------------------------
12798 Summary of changes for this label: 9_29_00
12800 New table initialization interfaces: AcpiInitializeSubsystem no
12801 longer has any parameters AcpiFindRootPointer - Find the RSDP (if
12802 necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP-
12803 >RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by
12806 Note: These interface changes require changes to all existing OSDs
12808 The PCI_Config default address space handler is always installed
12809 at the root namespace object.
12811 -------------------------------------------
12812 Summary of changes for this label: 09_15_00
12814 The new initialization architecture is implemented. New
12815 interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize)
12816 AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace
12818 (Namespace is automatically loaded when a table is loaded)
12820 The ACPI_OPERAND_OBJECT has been optimized to shrink its size from
12821 52 bytes to 32 bytes. There is usually one of these for every
12822 namespace object, so the memory savings is significant.
12824 Implemented just-in-time evaluation of the CreateField operators.
12826 Bug fixes for IA-64 support have been integrated.
12828 Additional code review comments have been implemented
12830 The so-called "third pass parse" has been replaced by a final walk
12831 through the namespace to initialize all operation regions (address
12832 spaces) and fields that have not yet been initialized during the
12833 execution of the various _INI and REG methods.
12835 New file - namespace/nsinit.c
12837 -------------------------------------------
12838 Summary of changes for this label: 09_01_00
12840 Namespace manager data structures have been reworked to change the
12841 primary object from a table to a single object. This has
12842 resulted in dynamic memory savings of 3X within the namespace and
12843 2X overall in the ACPI CA subsystem.
12845 Fixed problem where the call to AcpiEvFindPciRootBuses was
12846 inadvertently left commented out.
12848 Reduced the warning count when generating the source with the GCC
12851 Revision numbers added to each module header showing the
12852 SourceSafe version of the file. Please refer to this version
12853 number when giving us feedback or comments on individual modules.
12855 The main object types within the subsystem have been renamed to
12856 clarify their purpose:
12858 ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT
12859 ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT
12860 ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE
12862 NOTE: no changes to the initialization sequence are included in
12865 -------------------------------------------
12866 Summary of changes for this label: 08_23_00
12868 Fixed problem where TerminateControlMethod was being called
12869 multiple times per method
12871 Fixed debugger problem where single stepping caused a semaphore to
12874 Improved performance through additional parse object caching -
12875 added ACPI_EXTENDED_OP type
12877 -------------------------------------------
12878 Summary of changes for this label: 08_10_00
12880 Parser/Interpreter integration: Eliminated the creation of
12881 complete parse trees for ACPI tables and control methods.
12882 Instead, parse subtrees are created and then deleted as soon as
12883 they are processed (Either entered into the namespace or executed
12884 by the interpreter). This reduces the use of dynamic kernel
12885 memory significantly. (about 10X)
12887 Exception codes broken into classes and renumbered. Be sure to
12888 recompile all code that includes acexcep.h. Hopefully we won't
12889 have to renumber the codes again now that they are split into
12890 classes (environment, programmer, AML code, ACPI table, and
12893 Fixed some additional alignment issues in the Resource Manager
12896 Implemented semaphore tracking in the AcpiExec utility, and fixed
12897 several places where mutexes/semaphores were being unlocked
12898 without a corresponding lock operation. There are no known
12899 semaphore or mutex "leaks" at this time.
12901 Fixed the case where an ASL Return operator is used to return an
12904 -------------------------------------------
12905 Summary of changes for this label: 07_28_00
12907 Fixed a problem with the way addresses were calculated in
12908 AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem
12909 manifested itself when a Field was created with WordAccess or
12910 DwordAccess, but the field unit defined within the Field was less
12912 than a Word or Dword.
12914 Fixed a problem in AmlDumpOperands() module's loop to pull
12915 operands off of the operand stack to display information. The
12916 problem manifested itself as a TLB error on 64-bit systems when
12917 accessing an operand stack with two or more operands.
12919 Fixed a problem with the PCI configuration space handlers where
12920 context was getting confused between accesses. This required a
12921 change to the generic address space handler and address space
12922 setup definitions. Handlers now get both a global handler context
12923 (this is the one passed in by the user when executing
12924 AcpiInstallAddressSpaceHandler() and a specific region context
12925 that is unique to each region (For example, the _ADR, _SEG and
12926 _BBN values associated with a specific region). The generic
12927 function definitions have changed to the following:
12929 typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function,
12930 UINT32 Address, UINT32 BitWidth, UINT32 *Value, void
12931 *HandlerContext, // This used to be void *Context void
12932 *RegionContext); // This is an additional parameter
12934 typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE
12935 RegionHandle, UINT32 Function, void *HandlerContext, void
12936 **RegionContext); // This used to be **ReturnContext
12938 -------------------------------------------
12939 Summary of changes for this label: 07_21_00
12941 Major file consolidation and rename. All files within the
12942 interpreter have been renamed as well as most header files. This
12943 was done to prevent collisions with existing files in the host
12944 OSs -- filenames such as "config.h" and "global.h" seem to be
12945 quite common. The VC project files have been updated. All
12946 makefiles will require modification.
12948 The parser/interpreter integration continues in Phase 5 with the
12949 implementation of a complete 2-pass parse (the AML is parsed
12950 twice) for each table; This avoids the construction of a huge
12951 parse tree and therefore reduces the amount of dynamic memory
12952 required by the subsystem. Greater use of the parse object cache
12953 means that performance is unaffected.
12955 Many comments from the two code reviews have been rolled in.
12957 The 64-bit alignment support is complete.
12959 -------------------------------------------
12960 Summary of changes for this label: 06_30_00
12962 With a nod and a tip of the hat to the technology of yesteryear,
12963 we've added support in the source code for 80 column output
12964 devices. The code is now mostly constrained to 80 columns or
12965 less to support environments and editors that 1) cannot display
12966 or print more than 80 characters on a single line, and 2) cannot
12967 disable line wrapping.
12969 A major restructuring of the namespace data structure has been
12970 completed. The result is 1) cleaner and more
12971 understandable/maintainable code, and 2) a significant reduction
12972 in the dynamic memory requirement for each named ACPI object
12975 -------------------------------------------
12976 Summary of changes for this label: 06_23_00
12978 Linux support has been added. In order to obtain approval to get
12979 the ACPI CA subsystem into the Linux kernel, we've had to make
12980 quite a few changes to the base subsystem that will affect all
12981 users (all the changes are generic and OS- independent). The
12982 effects of these global changes have been somewhat far reaching.
12983 Files have been merged and/or renamed and interfaces have been
12984 renamed. The major changes are described below.
12986 Osd* interfaces renamed to AcpiOs* to eliminate namespace
12987 pollution/confusion within our target kernels. All OSD
12988 interfaces must be modified to match the new naming convention.
12990 Files merged across the subsystem. A number of the smaller source
12991 and header files have been merged to reduce the file count and
12992 increase the density of the existing files. There are too many
12993 to list here. In general, makefiles that call out individual
12994 files will require rebuilding.
12996 Interpreter files renamed. All interpreter files now have the
12997 prefix am* instead of ie* and is*.
12999 Header files renamed: The acapi.h file is now acpixf.h. The
13000 acpiosd.h file is now acpiosxf.h. We are removing references to
13001 the acronym "API" since it is somewhat windowsy. The new name is
13002 "external interface" or xface or xf in the filenames.j
13005 All manifest constants have been forced to upper case (some were
13006 mixed case.) Also, the string "ACPI_" has been prepended to many
13007 (not all) of the constants, typedefs, and structs.
13009 The globals "DebugLevel" and "DebugLayer" have been renamed
13010 "AcpiDbgLevel" and "AcpiDbgLayer" respectively.
13012 All other globals within the subsystem are now prefixed with
13013 "AcpiGbl_" Internal procedures within the subsystem are now
13014 prefixed with "Acpi" (with only a few exceptions). The original
13015 two-letter abbreviation for the subcomponent remains after "Acpi"
13016 - for example, CmCallocate became AcpiCmCallocate.
13018 Added a source code translation/conversion utility. Used to
13019 generate the Linux source code, it can be modified to generate
13020 other types of source as well. Can also be used to cleanup
13021 existing source by removing extraneous spaces and blank lines.
13022 Found in tools/acpisrc/*
13024 OsdUnMapMemory was renamed to OsdUnmapMemory and then
13025 AcpiOsUnmapMemory. (UnMap became Unmap).
13027 A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore.
13028 When set to one, this indicates that the caller wants to use the
13030 semaphore as a mutex, not a counting semaphore. ACPI CA uses
13031 both types. However, implementers of this call may want to use
13032 different OS primitives depending on the type of semaphore
13033 requested. For example, some operating systems provide separate
13035 "mutex" and "semaphore" interfaces - where the mutex interface is
13036 much faster because it doesn't have all the overhead of a full
13037 semaphore implementation.
13039 Fixed a deadlock problem where a method that accesses the PCI
13040 address space can block forever if it is the first access to the
13043 -------------------------------------------
13044 Summary of changes for this label: 06_02_00
13046 Support for environments that cannot handle unaligned data
13047 accesses (e.g. firmware and OS environments devoid of alignment
13048 handler technology namely SAL/EFI and the IA-64 Linux kernel) has
13049 been added (via configurable macros) in these three areas: -
13050 Transfer of data from the raw AML byte stream is done via byte
13051 moves instead of word/dword/qword moves. - External objects are
13052 aligned within the user buffer, including package elements (sub-
13053 objects). - Conversion of name strings to UINT32 Acpi Names is now
13056 The Store operator was modified to mimic Microsoft's
13057 implementation when storing to a Buffer Field.
13059 Added a check of the BM_STS bit before entering C3.
13061 The methods subdirectory has been obsoleted and removed. A new
13062 file, cmeval.c subsumes the functionality.
13064 A 16-bit (DOS) version of AcpiExec has been developed. The
13065 makefile is under the acpiexec directory.