1 ----------------------------------------
2 14 November 2012. Summary of changes for version 20121114:
4 This release is available at https://www.acpica.org/downloads
5 The ACPI 5.0 specification is available at www.acpi.info
7 1) ACPICA Kernel-resident Subsystem:
9 Implemented a performance enhancement for ACPI/AML Package objects. This
10 change greatly increases the performance of Package objects within the
11 interpreter. It changes the processing of reference counts for packages by
12 optimizing for the most common case where the package sub-objects are
13 either Integers, Strings, or Buffers. Increases the overall performance of
14 the ASLTS test suite by 1.5X (Increases the Slack Mode performance by 2X.)
15 Chao Guan. ACPICA BZ 943.
17 Implemented and deployed common macros to extract flag bits from resource
18 descriptors. Improves readability and maintainability of the code. Fixes a
19 problem with the UART serial bus descriptor for the number of data bits
20 flags (was incorrectly 2 bits, should be 3).
22 Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation
23 of the macros and changed the SETx macros to the style of (destination,
24 source). Also added ACPI_CASTx companion macros. Lv Zheng.
26 Example Code and Data Size: These are the sizes for the OS-independent
27 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
28 debug version of the code includes the debug output trace mechanism and
29 has a much larger code and data size.
32 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
33 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
35 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
36 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
39 2) iASL Compiler/Disassembler and Tools:
41 Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change
42 adds the ShareAndWake and ExclusiveAndWake flags which were added to the
43 Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986.
45 Disassembler: Fixed a problem with external declaration generation. Fixes
46 a problem where an incorrect pathname could be generated for an external
47 declaration if the original reference to the object includes leading
48 carats (^). ACPICA BZ 984.
50 Debugger: Completed a major update for the Disassemble<method> command.
51 This command was out-of-date and did not properly disassemble control
52 methods that had any reasonable complexity. This fix brings the command up
53 to the same level as the rest of the disassembler. Adds one new file,
54 dmdeferred.c, which is existing code that is now common with the main
55 disassembler and the debugger disassemble command. ACPICA MZ 978.
57 iASL: Moved the parser entry prototype to avoid a duplicate declaration.
58 Newer versions of Bison emit this prototype, so moved the prototype out of
59 the iASL header to where it is actually used in order to avoid a duplicate
62 iASL/Tools: Standardized use of the stream I/O functions:
63 1) Ensure check for I/O error after every fopen/fread/fwrite
64 2) Ensure proper order of size/count arguments for fread/fwrite
65 3) Use test of (Actual != Requested) after all fwrite, and most fread
66 4) Standardize I/O error messages
67 Improves reliability and maintainability of the code. Bob Moore, Lv Zheng.
70 Disassembler: Prevent duplicate External() statements. During generation
71 of external statements, detect similar pathnames that are actually
72 duplicates such as these:
75 Remove all leading '\' characters from pathnames during the external
76 statement generation so that duplicates will be detected and tossed.
79 Tools: Replace low-level I/O with stream I/O functions. Replace
80 open/read/write/close with the stream I/O equivalents
81 fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob
84 AcpiBin: Fix for the dump-to-hex function. Now correctly output the table
85 name header so that AcpiXtract recognizes the output file/table.
87 iASL: Remove obsolete -2 option flag. Originally intended to force the
88 compiler/disassembler into an ACPI 2.0 mode, this was never implemented
89 and the entire concept is now obsolete.
91 ----------------------------------------
92 18 October 2012. Summary of changes for version 20121018:
95 1) ACPICA Kernel-resident Subsystem:
97 Updated support for the ACPI 5.0 MPST table. Fixes some problems
98 introduced by late changes to the table as it was added to the ACPI 5.0
99 specification. Includes header, disassembler, and data table compiler
100 support as well as a new version of the MPST template.
102 AcpiGetObjectInfo: Enhanced the device object support to include the ACPI
103 5.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID
104 methods: _HID, _CID, and _UID.
106 Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed
107 ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent
108 name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId)
109 names for their various drivers. Affects the AcpiGetObjectInfo external
110 interface, and other internal interfaces as well.
112 Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME.
113 This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME
114 on machines that support non-aligned transfers. Optimizes for this case
115 rather than using a strncpy. With assistance from Zheng Lv.
117 Resource Manager: Small fix for buffer size calculation. Fixed a one byte
118 error in the output buffer calculation. Feng Tang. ACPICA BZ 849.
120 Added a new debug print message for AML mutex objects that are force-
121 released. At control method termination, any currently acquired mutex
122 objects are force-released. Adds a new debug-only message for each one
125 Audited/updated all ACPICA return macros and the function debug depth
126 counter: 1) Ensure that all functions that use the various TRACE macros
127 also use the appropriate ACPICA return macros. 2) Ensure that all normal
128 return statements surround the return expression (value) with parens to
129 ensure consistency across the ACPICA code base. Guan Chao, Tang Feng,
130 Zheng Lv, Bob Moore. ACPICA Bugzilla 972.
132 Global source code changes/maintenance: All extra lines at the start and
133 end of each source file have been removed for consistency. Also, within
134 comments, all new sentences start with a single space instead of a double
135 space, again for consistency across the code base.
137 Example Code and Data Size: These are the sizes for the OS-independent
138 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
139 debug version of the code includes the debug output trace mechanism and
140 has a much larger code and data size.
143 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
144 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
146 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
147 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
150 2) iASL Compiler/Disassembler and Tools:
152 AcpiExec: Improved the algorithm used for memory leak/corruption
153 detection. Added some intelligence to the code that maintains the global
154 list of allocated memory. The list is now ordered by allocated memory
155 address, significantly improving performance. When running AcpiExec on
156 the ASLTS test suite, speed improvements of 3X to 5X are seen, depending
157 on the platform and/or the environment. Note, this performance
158 enhancement affects the AcpiExec utility only, not the kernel-resident
161 Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For
162 the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix
163 incorrect table offset reported for invalid opcodes. Report the original
164 32-bit value for bad ACPI_NAMEs (as well as the repaired name.)
166 Disassembler: Enhanced the -vt option to emit the binary table data in
167 hex format to assist with debugging.
169 Fixed a potential filename buffer overflow in osunixdir.c. Increased the
170 size of file structure. Colin Ian King.
172 ----------------------------------------
173 13 September 2012. Summary of changes for version 20120913:
176 1) ACPICA Kernel-resident Subsystem:
178 ACPI 5.0: Added two new notify types for the Hardware Error Notification
179 Structure within the Hardware Error Source Table (HEST) table -- CMCI(5)
183 Table Manager: Merged/removed duplicate code in the root table resize
184 functions. One function is external, the other is internal. Lv Zheng,
188 Makefiles: Completely removed the obsolete "Linux" makefiles under
189 acpica/generate/linux. These makefiles are obsolete and have been replaced
191 the generic unix makefiles under acpica/generate/unix.
193 Makefiles: Ensure that binary files always copied properly. Minor rule
195 to ensure that the final binary output files are always copied up to the
196 appropriate binary directory (bin32 or bin64.)
198 Example Code and Data Size: These are the sizes for the OS-independent
199 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
201 version of the code includes the debug output trace mechanism and has a
203 larger code and data size.
206 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
207 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
209 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
210 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
213 2) iASL Compiler/Disassembler and Tools:
215 Disassembler: Fixed a possible fault during the disassembly of resource
216 descriptors when a second parse is required because of the invocation of
217 external control methods within the table. With assistance from
218 adq@lidskialf.net. ACPICA BZ 976.
220 iASL: Fixed a namepath optimization problem. An error can occur if the
222 node that contains the namepath to be optimized does not have a parent
224 that is a named object. This change fixes the problem.
226 iASL: Fixed a regression where the AML file is not deleted on errors. The
228 output file should be deleted if there are any errors during the compiler.
230 only exception is if the -f (force output) option is used. ACPICA BZ 974.
232 iASL: Added a feature to automatically increase internal line buffer
234 Via realloc(), automatically increase the internal line buffer sizes as
235 necessary to support very long source code lines. The current version of
237 preprocessor requires a buffer long enough to contain full source code
239 This change increases the line buffer(s) if the input lines go beyond the
240 current buffer size. This eliminates errors that occurred when a source
242 line was longer than the buffer.
244 iASL: Fixed a problem with constant folding in method declarations. The
245 SyncLevel term is a ByteConstExpr, and incorrect code would be generated
247 Type3 opcode was used.
249 Debugger: Improved command help support. For incorrect argument count,
251 full help for the command. For help command itself, allow an argument to
254 Test Suites: Several bug fixes for the ASLTS suite reduces the number of
255 errors during execution of the suite. Guan Chao.
257 ----------------------------------------
258 16 August 2012. Summary of changes for version 20120816:
261 1) ACPICA Kernel-resident Subsystem:
263 Removed all use of the deprecated _GTS and _BFS predefined methods. The
265 (Going To Sleep) and _BFS (Back From Sleep) methods are essentially
266 deprecated and will probably be removed from the ACPI specification.
268 does not invoke them, and reportedly never will. The final nail in the
270 is that the ACPI specification states that these methods must be run with
271 interrupts off, which is not going to happen in a kernel interpreter.
273 Linux has removed all use of the methods also. It was discovered that
274 invoking these functions caused failures on some machines, probably
276 they were never tested since Windows does not call them. Affects two
278 interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng.
281 Implemented support for complex bit-packed buffers returned from the _PLD
282 (Physical Location of Device) predefined method. Adds a new external
283 interface, AcpiDecodePldBuffer that parses the buffer into a more usable C
284 structure. Note: C Bitfields cannot be used for this type of predefined
285 structure since the memory layout of individual bitfields is not defined
287 the C language. In addition, there are endian concerns where a compiler
289 change the bitfield ordering based on the machine type. The new ACPICA
290 interface eliminates these issues, and should be called after _PLD is
291 executed. ACPICA BZ 954.
293 Implemented a change to allow a scope change to root (via "Scope (\)")
295 execution of module-level ASL code (code that is executed at table load
298 Added the Windows8/Server2012 string for the _OSI method. This change adds
300 new _OSI string, "Windows 2012" for both Windows 8 and Windows Server
303 Added header support for the new ACPI tables DBG2 (Debug Port Table Type
305 and CSRT (Core System Resource Table).
307 Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined
308 names. This simplifies access to the buffers returned by these predefined
309 names. Adds a new file, include/acbuffer.h. ACPICA BZ 956.
311 GPE support: Removed an extraneous parameter from the various low-level
312 internal GPE functions. Tang Feng.
314 Removed the linux makefiles from the unix packages. The generate/linux
315 makefiles are obsolete and have been removed from the unix tarball release
316 packages. The replacement makefiles are under generate/unix, and there is
318 top-level makefile under the main acpica directory. ACPICA BZ 967, 912.
320 Updates for Unix makefiles:
321 1) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven.
322 2) Update linker flags (move to end of command line) for AcpiExec utility.
325 Split ACPICA initialization functions to new file, utxfinit.c. Split from
326 utxface.c to improve modularity and reduce file size.
328 Example Code and Data Size: These are the sizes for the OS-independent
329 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
330 debug version of the code includes the debug output trace mechanism and
332 much larger code and data size.
335 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
336 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
338 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
339 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
342 2) iASL Compiler/Disassembler and Tools:
344 iASL: Fixed a problem with constant folding for fixed-length constant
345 expressions. The constant-folding code was not being invoked for constant
346 expressions that allow the use of type 3/4/5 opcodes to generate constants
347 for expressions such as ByteConstExpr, WordConstExpr, etc. This could
349 in the generation of invalid AML bytecode. ACPICA BZ 970.
351 iASL: Fixed a generation issue on newer versions of Bison. Newer versions
352 apparently automatically emit some of the necessary externals. This change
353 handles these versions in order to eliminate generation warnings.
355 Disassembler: Added support to decode the DBG2 and CSRT ACPI tables.
357 Disassembler: Add support to decode _PLD buffers. The decoded buffer
359 within comments in the output file.
361 Debugger: Fixed a regression with the "Threads" command where
362 AE_BAD_PARAMETER was always returned.
364 ----------------------------------------
365 11 July 2012. Summary of changes for version 20120711:
367 1) ACPICA Kernel-resident Subsystem:
369 Fixed a possible fault in the return package object repair code. Fixes a
370 problem that can occur when a lone package object is wrapped with an outer
371 package object in order to force conformance to the ACPI specification.
373 affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX,
377 Removed code to disable/enable bus master arbitration (ARB_DIS bit in the
378 PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the
379 ARB_DIS bit must be implemented in the host-dependent C3 processor power
381 support. Note, ARB_DIS is obsolete and only applies to older chipsets,
383 Intel and other vendors. (for Intel: ICH4-M and earlier)
385 This change removes the code to disable/enable bus master arbitration
387 suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register
389 resume problems on some machines. The change has been in use for over
393 Implemented two new external interfaces to support host-directed dynamic
395 table load and unload. They are intended to simplify the host
398 AcpiLoadTable: Load an SSDT from a buffer into the namespace.
399 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the
401 See the ACPICA reference for additional details. Adds one new file,
402 components/tables/tbxfload.c
404 Implemented and deployed two new interfaces for errors and warnings that
406 known to be caused by BIOS/firmware issues:
407 AcpiBiosError: Prints "ACPI Firmware Error" message.
408 AcpiBiosWarning: Prints "ACPI Firmware Warning" message.
409 Deployed these new interfaces in the ACPICA Table Manager code for ACPI
411 and FADT errors. Additional deployment to be completed as appropriate in
413 future. The associated conditional macros are ACPI_BIOS_ERROR and
414 ACPI_BIOS_WARNING. See the ACPICA reference for additional details. ACPICA
418 Implicit notify support: ensure that no memory allocation occurs within a
419 critical region. This fix moves a memory allocation outside of the time
421 spinlock is held. Fixes issues on systems that do not allow this behavior.
424 Split exception code utilities and tables into a new file,
427 Example Code and Data Size: These are the sizes for the OS-independent
428 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
430 version of the code includes the debug output trace mechanism and has a
432 larger code and data size.
435 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
436 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
438 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
439 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
442 2) iASL Compiler/Disassembler and Tools:
444 iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead
448 Debugger: Enhanced the "tables" command to emit additional information
450 the current set of ACPI tables, including the owner ID and flags decode.
452 Debugger: Reimplemented the "unload" command to use the new
453 AcpiUnloadParentTable external interface. This command was disable
455 due to need for an unload interface.
457 AcpiHelp: Added a new option to decode ACPICA exception codes. The -e
459 will decode 16-bit hex status codes (ACPI_STATUS) to name strings.
461 ----------------------------------------
462 20 June 2012. Summary of changes for version 20120620:
465 1) ACPICA Kernel-resident Subsystem:
467 Implemented support to expand the "implicit notify" feature to allow
469 devices to be notified by a single GPE. This feature automatically
471 runtime device notification in the absence of a BIOS-provided GPE control
472 method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit
474 provided by ACPICA for Windows compatibility, and is a workaround for BIOS
476 code errors. See the description of the AcpiSetupGpeForWake interface in
478 APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918.
480 Changed some comments and internal function names to simplify and ensure
481 correctness of the Linux code translation. No functional changes.
483 Example Code and Data Size: These are the sizes for the OS-independent
484 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
486 version of the code includes the debug output trace mechanism and has a
488 larger code and data size.
491 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
492 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
494 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
495 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
498 2) iASL Compiler/Disassembler and Tools:
500 Disassembler: Added support to emit short, commented descriptions for the
502 predefined names in order to improve the readability of the disassembled
503 output. ACPICA BZ 959. Changes include:
504 1) Emit descriptions for all standard predefined names (_INI, _STA,
507 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.)
508 3) Emit descriptions for the resource descriptor names (_MIN, _LEN,
511 AcpiSrc: Fixed several long-standing Linux code translation issues.
513 descriptions in function headers are now translated properly to lower case
515 underscores. ACPICA BZ 961. Also fixes translation problems such as these:
520 local_fADT -> local_FADT
521 execute_oSI -> execute_OSI
523 iASL: Fixed a problem where null bytes were inadvertently emitted into
527 iASL: Added the existing debug options to the standard help screen. There
529 no longer two different help screens. ACPICA BZ 957.
531 AcpiHelp: Fixed some typos in the various predefined name descriptions.
533 expand some of the descriptions where appropriate.
535 iASL: Fixed the -ot option (display compile times/statistics). Was not
537 properly for standard output; only worked for the debug file case.
539 ----------------------------------------
540 18 May 2012. Summary of changes for version 20120518:
543 1) ACPICA Core Subsystem:
545 Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is
547 to block until asynchronous events such as notifies and GPEs have
549 Within ACPICA, it is only called before a notify or GPE handler is
550 removed/uninstalled. It also may be useful for the host OS within related
551 drivers such as the Embedded Controller driver. See the ACPICA reference
553 additional information. ACPICA BZ 868.
555 ACPI Tables: Added a new error message for a possible overflow failure
557 the conversion of FADT 32-bit legacy register addresses to internal common
559 bit GAS structure representation. The GAS has a one-byte "bit length"
561 thus limiting the register length to 255 bits. ACPICA BZ 953.
563 Example Code and Data Size: These are the sizes for the OS-independent
564 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
566 version of the code includes the debug output trace mechanism and has a
568 larger code and data size.
571 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
572 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
574 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
575 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
578 2) iASL Compiler/Disassembler and Tools:
580 iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL
582 This keyword was added late in the ACPI 5.0 release cycle and was not
583 implemented until now.
585 Disassembler: Added support for Operation Region externals. Adds missing
586 support for operation regions that are defined in another table, and
587 referenced locally via a Field or BankField ASL operator. Now generates
589 correct External statement.
591 Disassembler: Several additional fixes for the External() statement
593 related to some ASL operators. Also, order the External() statements
594 alphabetically in the disassembler output. Fixes the External() generation
596 the Create* field, Alias, and Scope operators:
597 1) Create* buffer field operators - fix type mismatch warning on
599 2) Alias - implement missing External support
600 3) Scope - fix to make sure all necessary externals are emitted.
602 iASL: Improved pathname support. For include files, merge the prefix
604 with the file pathname and eliminate unnecessary components. Convert
605 backslashes in all pathnames to forward slashes, for readability. Include
607 pathname changes affect both #include and Include() type operators.
609 iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the
611 of a valid line by inserting a newline and then returning the EOF during
613 next call to GetNextLine. Prevents the line from being ignored due to EOF
616 iASL: Implemented some changes to enhance the IDE support (-vi option.)
618 and Warning messages are now correctly recognized for both the source code
619 browser and the global error and warning counts.
621 ----------------------------------------
622 20 April 2012. Summary of changes for version 20120420:
625 1) ACPICA Core Subsystem:
627 Implemented support for multiple notify handlers. This change adds support
629 allow multiple system and device notify handlers on Device, Thermal Zone,
631 Processor objects. This can simplify the host OS notification
633 Also re-worked and restructured the entire notify support code to simplify
634 handler installation, handler removal, notify event queuing, and notify
635 dispatch to handler(s). Note: there can still only be two global notify
636 handlers - one for system notifies and one for device notifies. There are
638 changes to the existing handler install/remove interfaces. Lin Ming, Bob
639 Moore, Rafael Wysocki.
641 Fixed a regression in the package repair code where the object reference
642 count was calculated incorrectly. Regression was introduced in the commit
643 "Support to add Package wrappers".
645 Fixed a couple possible memory leaks in the AML parser, in the error
647 path. Jesper Juhl, Lin Ming.
649 Example Code and Data Size: These are the sizes for the OS-independent
650 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
651 debug version of the code includes the debug output trace mechanism and
653 much larger code and data size.
656 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
657 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
659 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
660 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
663 2) iASL Compiler/Disassembler and Tools:
665 iASL: Fixed a problem with the resource descriptor support where the
667 of the StartDependentFn and StartDependentFnNoPrio descriptors were not
668 included in cumulative descriptor offset, resulting in incorrect values
670 resource tags within resource descriptors appearing after a
672 descriptor. Reported by Petr Vandrovec. ACPICA BZ 949.
674 iASL and Preprocessor: Implemented full support for the #line directive to
675 correctly track original source file line numbers through the .i
677 output file - for error and warning messages.
679 iASL: Expand the allowable byte constants for address space IDs.
681 the allowable range was 0x80-0xFF (user-defined spaces), now the range is
682 0x0A-0xFF to allow for custom and new IDs without changing the compiler.
684 iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948.
686 iASL: Add option to completely disable the preprocessor (-Pn).
688 iASL: Now emit all error/warning messages to standard error (stderr) by
689 default (instead of the previous stdout).
691 ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch().
693 for resource descriptor offset fix above. Update/cleanup error output
694 routines. Enable and send iASL errors/warnings to an error logfile
695 (error.txt). Send all other iASL output to a logfile (compiler.txt). Fixed
696 several extraneous "unrecognized operator" messages.
698 ----------------------------------------
699 20 March 2012. Summary of changes for version 20120320:
702 1) ACPICA Core Subsystem:
704 Enhanced the sleep/wake interfaces to optionally execute the _GTS method
705 (Going To Sleep) and the _BFS method (Back From Sleep). Windows apparently
706 does not execute these methods, and therefore these methods are often
707 untested. It has been seen on some systems where the execution of these
708 methods causes errors and also prevents the machine from entering S5. It
710 therefore suggested that host operating systems do not execute these
712 by default. In the future, perhaps these methods can be optionally
714 based on the age of the system and/or what is the newest version of
716 that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState
718 AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin
721 Fixed a problem where the length of the local/common FADT was set too
723 The local FADT table length cannot be set to the common length until the
724 original length has been examined. There is code that checks the table
726 and sets various fields appropriately. This can affect older machines with
727 early FADT versions. For example, this can cause inadvertent writes to the
728 CST_CNT register. Julian Anastasov.
730 Fixed a mapping issue related to a physical table override. Use the
732 mapping mechanism for tables loaded via the physical override OSL
734 This allows for early mapping before the virtual memory manager is
736 Thomas Renninger, Bob Moore.
738 Enhanced the automatic return-object repair code: Repair a common problem
740 predefined methods that are defined to return a variable-length Package of
741 sub-objects. If there is only one sub-object, some BIOS ASL code
743 simply returns the single object instead of a Package with one sub-object.
744 This new support will repair this error by wrapping a Package object
746 the original object, creating the correct and expected Package with one
748 object. Names that can be repaired in this manner include: _ALR, _CSD,
750 _MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ
753 Changed the exception code returned for invalid ACPI paths passed as
754 parameters to external interfaces such as AcpiEvaluateObject. Was
755 AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME.
757 Example Code and Data Size: These are the sizes for the OS-independent
758 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
760 version of the code includes the debug output trace mechanism and has a
762 larger code and data size.
765 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
766 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
768 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
769 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
772 2) iASL Compiler/Disassembler and Tools:
774 iASL: Added the infrastructure and initial implementation of a integrated
776 like preprocessor. This will simplify BIOS development process by
778 the need for a separate preprocessing step during builds. On Windows, it
780 eliminates the need to install a separate C compiler. ACPICA BZ 761. Some
781 features including full #define() macro support are still under
783 These preprocessor directives are supported:
796 In addition, these new command line options are supported:
797 -D <symbol> Define symbol for preprocessor use
798 -li Create preprocessed output file (*.i)
799 -P Preprocess only and create preprocessor output file (*.i)
801 Table Compiler: Fixed a problem where the equals operator within an
803 did not work properly.
805 Updated iASL to use the current versions of Bison/Flex. Updated the
807 project file to invoke these tools from the standard location. ACPICA BZ
810 Flex for Windows: V2.5.4
811 Bison for Windows: V2.4.1
813 ----------------------------------------
814 15 February 2012. Summary of changes for version 20120215:
817 1) ACPICA Core Subsystem:
819 There have been some major changes to the sleep/wake support code, as
820 described below (a - e).
822 a) The AcpiLeaveSleepState has been split into two interfaces, similar to
823 AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is
824 AcpiLeaveSleepStatePrep. This allows the host to perform actions between
826 time the _BFS method is called and the _WAK method is called. NOTE: all
828 must update their wake/resume code or else sleep/wake will not work
832 b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the
834 method. Some machines require that the GPEs are enabled before the _WAK
836 is executed. Thomas Renninger.
838 c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status) bit.
839 Some BIOS code assumes that WAK_STS will be cleared on resume and use it
841 determine whether the system is rebooting or resuming. Matthew Garrett.
843 d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From
845 match the ACPI specification requirement. Rafael Wysocki.
847 e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl
848 registers within the V5 FADT. This support adds two new files:
849 hardware/hwesleep.c implements the support for the new registers. Moved
851 sleep/wake external interfaces to hardware/hwxfsleep.c.
854 Added a new OSL interface for ACPI table overrides,
855 AcpiOsPhysicalTableOverride. This interface allows the host to override a
856 table via a physical address, instead of the logical address required by
857 AcpiOsTableOverride. This simplifies the host implementation. Initial
858 implementation by Thomas Renninger. The ACPICA implementation creates a
860 shared function for table overrides that attempts both a logical and a
863 Expanded the OSL memory read/write interfaces to 64-bit data
864 (AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory
865 transfer support for GAS register structures passed to AcpiRead and
868 Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a
870 build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC)
872 See the ACPICA reference for details. ACPICA BZ 942. This option removes
874 10% of the code and 5% of the static data, and the following hardware ACPI
875 features become unavailable:
876 PM Event and Control registers
877 SCI interrupt (and handler)
879 General Purpose Events (GPEs)
882 FACS table (Waking vectors and Global Lock)
884 Updated the unix tarball directory structure to match the ACPICA git
886 tree. This ensures that the generic unix makefiles work properly (in
887 generate/unix). Also updated the Linux makefiles to match. ACPICA BZ 867.
889 Updated the return value of the _REV predefined method to integer value 5
891 reflect ACPI 5.0 support.
893 Moved the external ACPI PM timer interface prototypes to the public
895 file where they belong.
897 Example Code and Data Size: These are the sizes for the OS-independent
898 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
900 version of the code includes the debug output trace mechanism and has a
902 larger code and data size.
905 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
906 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
908 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
909 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
912 2) iASL Compiler/Disassembler and Tools:
914 Disassembler: Fixed a problem with the new ACPI 5.0 serial resource
915 descriptors (I2C, SPI, UART) where the resource produce/consumer bit was
916 incorrectly displayed.
918 AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI
921 ----------------------------------------
922 11 January 2012. Summary of changes for version 20120111:
925 1) ACPICA Core Subsystem:
927 Implemented a new mechanism to allow host device drivers to check for
929 range conflicts with ACPI Operation Regions. Both SystemMemory and
931 address spaces are supported. A new external interface,
932 AcpiCheckAddressRange,
933 allows drivers to check an address range against the ACPI namespace. See
935 ACPICA reference for additional details. Adds one new file,
936 utilities/utaddress.c. Lin Ming, Bob Moore.
938 Fixed several issues with the ACPI 5.0 FADT support: Add the sleep Control
940 Status registers, update the ACPI 5.0 flags, and update internal data
941 structures to handle an FADT larger than 256 bytes. The size of the ACPI
945 Updated all ACPICA copyrights and signons to 2012. Added the 2012
947 all module headers and signons, including the standard Linux header. This
948 affects virtually every file in the ACPICA core subsystem, iASL compiler,
950 all ACPICA utilities.
952 Example Code and Data Size: These are the sizes for the OS-independent
953 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
955 version of the code includes the debug output trace mechanism and has a
957 larger code and data size.
960 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
961 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
963 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
964 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
967 2) iASL Compiler/Disassembler and Tools:
969 Disassembler: fixed a problem with the automatic resource tag generation
970 support. Fixes a problem where the resource tags are inadvertently not
971 constructed if the table being disassembled contains external references
973 control methods. Moved the actual construction of the tags to after the
975 namespace is constructed (after 2nd parse is invoked due to external
977 method references.) ACPICA BZ 941.
979 Table Compiler: Make all "generic" operators caseless. These are the
981 like UINT8, String, etc. Making these caseless improves ease-of-use.
985 ----------------------------------------
986 23 November 2011. Summary of changes for version 20111123:
990 This release contains full support for the ACPI 5.0 specification, as
993 Reduced Hardware Support:
994 -------------------------
996 This support allows for ACPI systems without the usual ACPI hardware. This
997 support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA
999 not attempt to initialize or use any of the usual ACPI hardware. Note,
1001 this flag is set, all of the following ACPI hardware is assumed to be not
1002 present and is not initialized or accessed:
1004 General Purpose Events (GPEs)
1005 Fixed Events (PM1a/PM1b and PM Control)
1006 Power Management Timer and Console Buttons (power/sleep)
1007 Real-time Clock Alarm
1009 System Control Interrupt (SCI)
1010 The FACS is assumed to be non-existent
1015 All new tables and updates to existing tables are fully supported in the
1016 ACPICA headers (for use by device drivers), the disassembler, and the iASL
1017 Data Table Compiler. ACPI 5.0 defines these new tables:
1019 BGRT /* Boot Graphics Resource Table */
1020 DRTM /* Dynamic Root of Trust for Measurement table */
1021 FPDT /* Firmware Performance Data Table */
1022 GTDT /* Generic Timer Description Table */
1023 MPST /* Memory Power State Table */
1024 PCCT /* Platform Communications Channel Table */
1025 PMTT /* Platform Memory Topology Table */
1026 RASF /* RAS Feature table */
1028 Operation Regions/SpaceIDs:
1029 ---------------------------
1031 All new operation regions are fully supported by the iASL compiler, the
1032 disassembler, and the ACPICA runtime code (for dispatch to region
1034 The new operation region Space IDs are:
1039 Resource Descriptors:
1040 ---------------------
1042 All new ASL resource descriptors are fully supported by the iASL compiler,
1044 ASL/AML disassembler, and the ACPICA runtime Resource Manager code
1046 all new predefined resource tags). New descriptors are:
1055 ASL/AML Operators, New and Modified:
1056 ------------------------------------
1058 One new operator is added, the Connection operator, which is used to
1060 a GeneralPurposeIo or GenericSerialBus resource descriptor with individual
1061 field objects within an operation region. Several new protocols are
1063 with the AccessAs operator. All are fully supported by the iASL compiler,
1064 disassembler, and runtime ACPICA AML interpreter:
1066 Connection // Declare Field Connection attributes
1067 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol
1068 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes Protocol
1069 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol
1070 RawDataBuffer // Data type for Vendor Data
1073 Predefined ASL/AML Objects:
1074 ---------------------------
1076 All new predefined objects/control-methods are supported by the iASL
1078 and the ACPICA runtime validation/repair (arguments and return values.)
1080 predefined names include the following:
1082 Standard Predefined Names (Objects or Control Methods):
1083 _AEI, _CLS, _CPC, _CWS, _DEP,
1084 _DLM, _EVT, _GCP, _CRT, _GWS,
1085 _HRV, _PRE, _PSE, _SRT, _SUB.
1087 Resource Tags (Names used to access individual fields within resource
1089 _DBT, _DPL, _DRS, _END, _FLC,
1090 _IOR, _LIN, _MOD, _PAR, _PHA,
1091 _PIN, _PPI, _POL, _RXL, _SLV,
1092 _SPE, _STB, _TXL, _VEN.
1094 ACPICA External Interfaces:
1095 ---------------------------
1097 Several new interfaces have been defined for use by ACPI-related device
1098 drivers and other host OS services:
1100 AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS
1102 acquire and release AML mutexes that are defined in the DSDT/SSDT tables
1103 provided by the BIOS. They are intended to be used in conjunction with the
1104 ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level
1105 mutual exclusion with the AML code/interpreter.
1107 AcpiGetEventResources: Returns the (formatted) resource descriptors as
1109 by the ACPI 5.0 _AEI object (ACPI Event Information). This object
1111 resource descriptors associated with hardware-reduced platform events,
1113 to the AcpiGetCurrentResources interface.
1115 Operation Region Handlers: For General Purpose IO and Generic Serial Bus
1116 operation regions, information about the Connection() object and any
1118 length information is passed to the region handler within the Context
1121 AcpiBufferToResource: This interface converts a raw AML buffer containing
1123 resource template or resource descriptor to the ACPI_RESOURCE internal
1125 suitable for use by device drivers. Can be used by an operation region
1127 to convert the Connection() buffer object into a ACPI_RESOURCE.
1129 Miscellaneous/Tools/TestSuites:
1130 -------------------------------
1132 Support for extended _HID names (Four alpha characters instead of three).
1133 Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities.
1134 Support for ACPI 5.0 features in the ASLTS test suite.
1135 Fully updated documentation (ACPICA and iASL reference documents.)
1137 ACPI Table Definition Language:
1138 -------------------------------
1140 Support for this language was implemented and released as a subsystem of
1142 iASL compiler in 2010. (See the iASL compiler User Guide.)
1145 Non-ACPI 5.0 changes for this release:
1146 --------------------------------------
1148 1) ACPICA Core Subsystem:
1150 Fix a problem with operation region declarations where a failure can occur
1152 the region name and an argument that evaluates to an object (such as the
1153 region address) are in different namespace scopes. Lin Ming, ACPICA BZ
1156 Do not abort an ACPI table load if an invalid space ID is found within.
1158 will be caught later if the offending method is executed. ACPICA BZ 925.
1160 Fixed an issue with the FFixedHW space ID where the ID was not always
1161 recognized properly (Both ACPICA and iASL). ACPICA BZ 926.
1163 Fixed a problem with the 32-bit generation of the unix-specific OSL
1164 (osunixxf.c). Lin Ming, ACPICA BZ 936.
1166 Several changes made to enable generation with the GCC 4.6 compiler.
1170 New error messages: Unsupported I/O requests (not 8/16/32 bit), and
1172 field registers out-of-range.
1174 2) iASL Compiler/Disassembler and Tools:
1176 iASL: Implemented the __PATH__ operator, which returns the full pathname
1178 the current source file.
1180 AcpiHelp: Automatically display expanded keyword information for all ASL
1183 Debugger: Add "Template" command to disassemble/dump resource template
1186 Added a new master script to generate and execute the ASLTS test suite.
1187 Automatically handles 32- and 64-bit generation. See tests/aslts.sh
1189 iASL: Fix problem with listing generation during processing of the
1191 operator where AML listing was disabled until the entire Switch block was
1194 iASL: Improve support for semicolon statement terminators. Fix "invalid
1195 character" message for some cases when the semicolon is used. Semicolons
1197 now allowed after every <Term> grammar element. ACPICA BZ 927.
1199 iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ
1202 Disassembler: Fix problem with disassembly of the DataTableRegion operator
1203 where an inadvertent "Unhandled deferred opcode" message could be
1206 3) Example Code and Data Size
1208 These are the sizes for the OS-independent acpica.lib produced by the
1209 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
1210 includes the debug output trace mechanism and has a much larger code and
1215 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
1216 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
1218 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
1219 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
1221 ----------------------------------------
1222 22 September 2011. Summary of changes for version 20110922:
1226 Support for ACPI 5.0 in ACPICA has been underway for several months and
1228 be released at the same time that ACPI 5.0 is officially released.
1230 The ACPI 5.0 specification is on track for release in the next few months.
1232 1) ACPICA Core Subsystem:
1234 Fixed a problem where the maximum sleep time for the Sleep() operator was
1235 intended to be limited to two seconds, but was inadvertently limited to 20
1238 Linux and Unix makefiles: Added header file dependencies to ensure correct
1239 generation of ACPICA core code and utilities. Also simplified the
1241 considerably through the use of the vpath variable to specify search
1245 2) iASL Compiler/Disassembler and Tools:
1247 iASL: Implemented support to check the access length for all fields
1249 access named Resource Descriptor fields. For example, if a resource field
1251 defined to be two bits, a warning is issued if a CreateXxxxField() is used
1252 with an incorrect bit length. This is implemented for all current resource
1253 descriptor names. ACPICA BZ 930.
1255 Disassembler: Fixed a byte ordering problem with the output of 24-bit and
1259 iASL: Fixed a couple of issues associated with variable-length package
1260 objects. 1) properly handle constants like One, Ones, Zero -- do not make
1262 VAR_PACKAGE when these are used as a package length. 2) Allow the
1264 opcode (in addition to PACKAGE) when validating object types for
1268 iASL: Emit statistics for all output files (instead of just the ASL input
1270 AML output). Includes listings, hex files, etc.
1272 iASL: Added -G option to the table compiler to allow the compilation of
1274 ACPI tables. The only part of a table that is required is the standard 36-
1278 AcpiXtract: Ported to the standard ACPICA environment (with ACPICA
1280 which also adds correct 64-bit support. Also, now all output filenames are
1281 completely lower case.
1283 AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when
1284 loading table files. A warning is issued for any such tables. The only
1285 exception is an FADT. This also fixes a possible fault when attempting to
1287 non-AML tables. ACPICA BZ 932.
1289 AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where a
1290 missing table terminator could cause a fault when using the -p option.
1292 AcpiSrc: Fixed a possible divide-by-zero fault when generating file
1295 3) Example Code and Data Size
1297 These are the sizes for the OS-independent acpica.lib produced by the
1298 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
1299 includes the debug output trace mechanism and has a much larger code and
1303 Previous Release (VC 9.0):
1304 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
1305 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
1306 Current Release (VC 9.0):
1307 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
1308 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
1311 ----------------------------------------
1312 23 June 2011. Summary of changes for version 20110623:
1314 1) ACPI CA Core Subsystem:
1316 Updated the predefined name repair mechanism to not attempt repair of a
1318 return object if a _PSS object is present. We can only sort the _TSS
1320 package if there is no _PSS within the same scope. This is because if _PSS
1322 present, the ACPI specification dictates that the _TSS Power Dissipation
1324 is to be ignored, and therefore some BIOSs leave garbage values in the
1326 Power field(s). In this case, it is best to just return the _TSS package
1328 is. Reported by, and fixed with assistance from Fenghua Yu.
1330 Added an option to globally disable the control method return value
1332 and repair. This runtime option can be used to disable return value repair
1334 this is causing a problem on a particular machine. Also added an option to
1335 AcpiExec (-dr) to set this disable flag.
1337 All makefiles and project files: Major changes to improve generation of
1339 tools. ACPICA BZ 912:
1340 Reduce default optimization levels to improve compatibility
1341 For Linux, add strict-aliasing=0 for gcc 4
1342 Cleanup and simplify use of command line defines
1343 Cleanup multithread library support
1344 Improve usage messages
1346 Linux-specific header: update handling of THREAD_ID and pthread. For the
1348 bit case, improve casting to eliminate possible warnings, especially with
1352 Example Code and Data Size: These are the sizes for the OS-independent
1353 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1355 version of the code includes the debug output trace mechanism and has a
1357 larger code and data size.
1359 Previous Release (VC 9.0):
1360 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
1361 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
1362 Current Release (VC 9.0):
1363 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
1364 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
1366 2) iASL Compiler/Disassembler and Tools:
1368 With this release, a new utility named "acpihelp" has been added to the
1370 package. This utility summarizes the ACPI specification chapters for the
1372 and AML languages. It generates under Linux/Unix as well as Windows, and
1373 provides the following functionality:
1374 Find/display ASL operator(s) -- with description and syntax.
1375 Find/display ASL keyword(s) -- with exact spelling and descriptions.
1376 Find/display ACPI predefined name(s) -- with description, number
1377 of arguments, and the return value data type.
1378 Find/display AML opcode name(s) -- with opcode, arguments, and
1380 Decode/display AML opcode -- with opcode name, arguments, and grammar.
1382 Service Layers: Make multi-thread support configurable. Conditionally
1384 the multi-thread support so that threading libraries will not be linked if
1386 necessary. The only tool that requires multi-thread support is AcpiExec.
1388 iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions
1390 Bison appear to want the interface to yyerror to be a const char * (or at
1391 least this is a problem when generating iASL on some systems.) ACPICA BZ
1395 Tools: Fix for systems where O_BINARY is not defined. Only used for
1397 versions of the tools.
1399 ----------------------------------------
1400 27 May 2011. Summary of changes for version 20110527:
1402 1) ACPI CA Core Subsystem:
1404 ASL Load() operator: Reinstate most restrictions on the incoming ACPI
1406 signature. Now, only allow SSDT, OEMx, and a null signature. History:
1407 1) Originally, we checked the table signature for "SSDT" or "PSDT".
1408 (PSDT is now obsolete.)
1409 2) We added support for OEMx tables, signature "OEM" plus a fourth
1410 "don't care" character.
1411 3) Valid tables were encountered with a null signature, so we just
1412 gave up on validating the signature, (05/2008).
1413 4) We encountered non-AML tables such as the MADT, which caused
1414 interpreter errors and kernel faults. So now, we once again allow
1415 only SSDT, OEMx, and now, also a null signature. (05/2011).
1417 Added the missing _TDL predefined name to the global name list in order to
1418 enable validation. Affects both the core ACPICA code and the iASL
1421 Example Code and Data Size: These are the sizes for the OS-independent
1422 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1424 version of the code includes the debug output trace mechanism and has a
1426 larger code and data size.
1428 Previous Release (VC 9.0):
1429 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
1430 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
1431 Current Release (VC 9.0):
1432 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
1433 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
1435 2) iASL Compiler/Disassembler and Tools:
1437 Debugger/AcpiExec: Implemented support for "complex" method arguments on
1439 debugger command line. This adds support beyond simple integers --
1441 Strings, Buffers, and Packages. Includes support for nested packages.
1442 Increased the default command line buffer size to accommodate these
1444 See the ACPICA reference for details and syntax. ACPICA BZ 917.
1446 Debugger/AcpiExec: Implemented support for "default" method arguments for
1448 Execute/Debug command. Now, the debugger will always invoke a control
1450 with the required number of arguments -- even if the command line
1452 none or insufficient arguments. It uses default integer values for any
1454 arguments. Also fixes a bug where only six method arguments maximum were
1455 supported instead of the required seven.
1457 Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine
1459 also return status in order to prevent buffer overruns. See the ACPICA
1460 reference for details and syntax. ACPICA BZ 921
1462 iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and
1463 makefiles to simplify support for the two different but similar parser
1464 generators, bison and yacc.
1466 Updated the generic unix makefile for gcc 4. The default gcc version is
1468 expected to be 4 or greater, since options specific to gcc 4 are used.
1470 ----------------------------------------
1471 13 April 2011. Summary of changes for version 20110413:
1473 1) ACPI CA Core Subsystem:
1475 Implemented support to execute a so-called "orphan" _REG method under the
1477 device. This change will force the execution of a _REG method underneath
1480 device even if there is no corresponding operation region of type
1481 EmbeddedControl. Fixes a problem seen on some machines and apparently is
1482 compatible with Windows behavior. ACPICA BZ 875.
1484 Added more predefined methods that are eligible for automatic NULL package
1485 element removal. This change adds another group of predefined names to the
1487 of names that can be repaired by having NULL package elements dynamically
1488 removed. This group are those methods that return a single variable-length
1489 package containing simple data types such as integers, buffers, strings.
1491 includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx,
1494 and _TZD. ACPICA BZ 914.
1496 Split and segregated all internal global lock functions to a new file,
1499 Updated internal address SpaceID for DataTable regions. Moved this
1502 id in preparation for ACPI 5.0 changes that will include some new space
1505 change should not affect user/host code.
1507 Example Code and Data Size: These are the sizes for the OS-independent
1509 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
1511 the code includes the debug output trace mechanism and has a much larger
1516 Previous Release (VC 9.0):
1517 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
1518 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
1519 Current Release (VC 9.0):
1520 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
1521 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
1523 2) iASL Compiler/Disassembler and Tools:
1525 iASL/DTC: Major update for new grammar features. Allow generic data types
1527 custom ACPI tables. Field names are now optional. Any line can be split to
1528 multiple lines using the continuation char (\). Large buffers now use
1530 continuation character(s) and no colon on the continuation lines. See the
1532 update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob
1535 iASL: Mark ASL "Return()" and the simple "Return" as "Null" return
1537 Since the parser stuffs a "zero" as the return value for these statements
1540 the underlying AML grammar), they were seen as "return with value" by the
1542 semantic checking. They are now seen correctly as "null" return
1545 iASL: Check if a_REG declaration has a corresponding Operation Region.
1547 check for each _REG to ensure that there is in fact a corresponding
1549 region declaration in the same scope. If not, the _REG method is not very
1551 since it probably won't be executed. ACPICA BZ 915.
1553 iASL/DTC: Finish support for expression evaluation. Added a new expression
1555 that implements c-style operator precedence and parenthesization. ACPICA
1559 Disassembler/DTC: Remove support for () and <> style comments in data
1562 that DTC has full expression support, we don't want to have comment
1565 start with a parentheses or a less-than symbol. Now, only the standard /*
1568 comments are supported, as well as the bracket [] comments.
1570 AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have
1572 headers in the acpidump file. Update the header validation to support
1574 tables. Problem introduced in previous AcpiXtract version in the change to
1575 support "wrong checksum" error messages emitted by acpidump utility.
1577 iASL: Add a * option to generate all template files (as a synonym for ALL)
1580 "iasl -T *" or "iasl -T ALL".
1582 iASL/DTC: Do not abort compiler on fatal errors. We do not want to
1584 abort the compiler on "fatal" errors, simply should abort the current
1586 This allows multiple compiles with a single (possibly wildcard) compiler
1589 ----------------------------------------
1590 16 March 2011. Summary of changes for version 20110316:
1592 1) ACPI CA Core Subsystem:
1594 Fixed a problem caused by a _PRW method appearing at the namespace root
1596 during the setup of wake GPEs. A fault could occur if a _PRW directly
1599 root object was passed to the AcpiSetupGpeForWake interface. Lin Ming.
1601 Implemented support for "spurious" Global Lock interrupts. On some
1603 global lock interrupt can occur without the pending flag being set. Upon a
1605 interrupt, we now ensure that a thread is actually waiting for the lock
1607 signaling GL availability. Rafael Wysocki, Bob Moore.
1609 Example Code and Data Size: These are the sizes for the OS-independent
1611 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
1613 the code includes the debug output trace mechanism and has a much larger
1618 Previous Release (VC 9.0):
1619 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
1620 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
1621 Current Release (VC 9.0):
1622 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
1623 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
1625 2) iASL Compiler/Disassembler and Tools:
1627 Implemented full support for the "SLIC" ACPI table. Includes support in
1629 header files, disassembler, table compiler, and template generator. Bob
1633 AcpiXtract: Correctly handle embedded comments and messages from AcpiDump.
1634 Apparently some or all versions of acpidump will occasionally emit a
1637 "Wrong checksum", etc., into the dump file. This was causing problems for
1638 AcpiXtract. ACPICA BZ 905.
1640 iASL: Fix the Linux makefile by removing an inadvertent double file
1644 AcpiExec: Update installation of operation region handlers. Install one
1646 for a user-defined address space. This is used by the ASL test suite
1649 ----------------------------------------
1650 11 February 2011. Summary of changes for version 20110211:
1652 1) ACPI CA Core Subsystem:
1654 Added a mechanism to defer _REG methods for some early-installed handlers.
1655 Most user handlers should be installed before call to AcpiEnableSubsystem.
1656 However, Event handlers and region handlers should be installed after
1657 AcpiInitializeObjects. Override handlers for the "default" regions should
1659 installed early, however. This change executes all _REG methods for the
1660 default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any
1661 chicken/egg issues between them. ACPICA BZ 848.
1663 Implemented an optimization for GPE detection. This optimization will
1665 ignore GPE registers that contain no enabled GPEs -- there is no need to
1666 read the register since this information is available internally. This
1667 becomes more important on machines with a large GPE space. ACPICA bugzilla
1668 884. Lin Ming. Suggestion from Joe Liu.
1670 Removed all use of the highly unreliable FADT revision field. The revision
1671 number in the FADT has been found to be completely unreliable and cannot
1673 trusted. Only the actual table length can be used to infer the version.
1675 change updates the ACPICA core and the disassembler so that both no longer
1676 even look at the FADT version and instead depend solely upon the FADT
1679 Fix an unresolved name issue for the no-debug and no-error-message source
1680 generation cases. The _AcpiModuleName was left undefined in these cases,
1682 it is actually needed as a parameter to some interfaces. Define
1683 _AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888.
1685 Split several large files (makefiles and project files updated)
1686 utglobal.c -> utdecode.c
1687 dbcomds.c -> dbmethod.c dbnames.c
1688 dsopcode.c -> dsargs.c dscontrol.c
1689 dsload.c -> dsload2.c
1690 aslanalyze.c -> aslbtypes.c aslwalks.c
1692 Example Code and Data Size: These are the sizes for the OS-independent
1693 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1694 debug version of the code includes the debug output trace mechanism and
1696 a much larger code and data size.
1698 Previous Release (VC 9.0):
1699 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
1700 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
1701 Current Release (VC 9.0):
1702 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
1703 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
1705 2) iASL Compiler/Disassembler and Tools:
1707 iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__.
1708 These are useful C-style macros with the standard definitions. ACPICA
1711 iASL/DTC: Added support for integer expressions and labels. Support for
1713 expressions for all integer fields in all ACPI tables. Support for labels
1715 "generic" portions of tables such as UEFI. See the iASL reference manual.
1717 Debugger: Added a command to display the status of global handlers. The
1718 "handlers" command will display op region, fixed event, and miscellaneous
1719 global handlers. installation status -- and for op regions, whether
1721 or user-installed handler will be used.
1723 iASL: Warn if reserved method incorrectly returns a value. Many predefined
1724 names are defined such that they do not return a value. If implemented as
1726 method, issue a warning if such a name explicitly returns a value. ACPICA
1729 iASL: Added detection of GPE method name conflicts. Detects a conflict
1731 there are two GPE methods of the form _Lxy and _Exy in the same scope.
1733 example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848.
1735 iASL/DTC: Fixed a couple input scanner issues with comments and line
1736 numbers. Comment remover could get confused and miss a comment ending.
1738 a problem with line counter maintenance.
1740 iASL/DTC: Reduced the severity of some errors from fatal to error. There
1742 no need to abort on simple errors within a field definition.
1744 Debugger: Simplified the output of the help command. All help output now
1746 a single screen, instead of help subcommands. ACPICA Bugzilla 897.
1748 ----------------------------------------
1749 12 January 2011. Summary of changes for version 20110112:
1751 1) ACPI CA Core Subsystem:
1753 Fixed a race condition between method execution and namespace walks that
1755 possibly cause a fault. The problem was apparently introduced in version
1756 20100528 as a result of a performance optimization that reduces the number
1758 namespace walks upon method exit by using the delete_namespace_subtree
1759 function instead of the delete_namespace_by_owner function used
1761 Bug is a missing namespace lock in the delete_namespace_subtree function.
1762 dana.myers@oracle.com
1764 Fixed several issues and a possible fault with the automatic "serialized"
1765 method support. History: This support changes a method to "serialized" on
1767 fly if the method generates an AE_ALREADY_EXISTS error, indicating the
1768 possibility that it cannot handle reentrancy. This fix repairs a couple of
1769 issues seen in the field, especially on machines with many cores:
1771 1) Delete method children only upon the exit of the last thread,
1772 so as to not delete objects out from under other running threads
1773 (and possibly causing a fault.)
1774 2) Set the "serialized" bit for the method only upon the exit of the
1775 Last thread, so as to not cause deadlock when running threads
1777 3) Cleanup the use of the AML "MethodFlags" and internal method flags
1778 so that there is no longer any confusion between the two.
1780 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com.
1782 Debugger: Now lock the namespace for duration of a namespace dump.
1784 issues if the namespace is changing dynamically underneath the debugger.
1785 Especially affects temporary namespace nodes, since the debugger displays
1788 Updated the ordering of include files. The ACPICA headers should appear
1789 before any compiler-specific headers (stdio.h, etc.) so that acenv.h can
1791 any necessary compiler-specific defines, etc. Affects the ACPI-related
1795 Updated all ACPICA copyrights and signons to 2011. Added the 2011
1797 to all module headers and signons, including the Linux header. This
1799 virtually every file in the ACPICA core subsystem, iASL compiler, and all
1802 Added project files for MS Visual Studio 2008 (VC++ 9.0). The original
1803 project files for VC++ 6.0 are now obsolete. New project files can be
1805 under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for
1808 Example Code and Data Size: These are the sizes for the OS-independent
1809 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1810 debug version of the code includes the debug output trace mechanism and
1812 much larger code and data size.
1814 Previous Release (VC 6.0):
1815 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
1816 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
1817 Current Release (VC 9.0):
1818 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
1819 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
1821 2) iASL Compiler/Disassembler and Tools:
1823 iASL: Added generic data types to the Data Table compiler. Add "generic"
1825 types such as UINT32, String, Unicode, etc., to simplify the generation of
1826 platform-defined tables such as UEFI. Lin Ming.
1828 iASL: Added listing support for the Data Table Compiler. Adds listing
1830 (-l) to display actual binary output for each line of input code.
1832 ----------------------------------------
1833 09 December 2010. Summary of changes for version 20101209:
1835 1) ACPI CA Core Subsystem:
1837 Completed the major overhaul of the GPE support code that was begun in
1839 2010. Major features include: removal of _PRW execution in ACPICA (host
1840 executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing,
1841 changes to existing interfaces, simplification of GPE handler operation,
1843 a handful of new interfaces:
1849 One new file, evxfgpe.c to consolidate all external GPE interfaces.
1851 See the ACPICA Programmer Reference for full details and programming
1852 information. See the new section 4.4 "General Purpose Event (GPE) Support"
1853 for a full overview, and section 8.7 "ACPI General Purpose Event
1855 for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin Ming,
1856 Bob Moore, Rafael Wysocki.
1858 Implemented a new GPE feature for Windows compatibility, the "Implicit
1860 GPE Notify". This feature will automatically issue a Notify(2) on a device
1861 when a Wake GPE is received if there is no corresponding GPE method or
1862 handler. ACPICA BZ 870.
1864 Fixed a problem with the Scope() operator during table parse and load
1866 During load phase (table load or method execution), the scope operator
1868 not enter the target into the namespace. Instead, it should open a new
1870 at the target location. Linux BZ 19462, ACPICA BZ 882.
1872 Example Code and Data Size: These are the sizes for the OS-independent
1873 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1874 debug version of the code includes the debug output trace mechanism and
1876 much larger code and data size.
1879 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
1880 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
1882 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
1883 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
1885 2) iASL Compiler/Disassembler and Tools:
1887 iASL: Relax the alphanumeric restriction on _CID strings. These strings
1889 "bus-specific" per the ACPI specification, and therefore any characters
1891 acceptable. The only checks that can be performed are for a null string
1893 perhaps for a leading asterisk. ACPICA BZ 886.
1895 iASL: Fixed a problem where a syntax error that caused a premature EOF
1896 condition on the source file emitted a very confusing error message. The
1897 premature EOF is now detected correctly. ACPICA BZ 891.
1899 Disassembler: Decode the AccessSize within a Generic Address Structure
1901 access, word access, etc.) Note, this field does not allow arbitrary bit
1902 access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword.
1904 New: AcpiNames utility - Example namespace dump utility. Shows an example
1906 ACPICA configuration for a minimal namespace dump utility. Uses table and
1907 namespace managers, but no AML interpreter. Does not add any functionality
1908 over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to
1909 partition and configure ACPICA. ACPICA BZ 883.
1911 AML Debugger: Increased the debugger buffer size for method return
1913 Was 4K, increased to 16K. Also enhanced error messages for debugger method
1914 execution, including the buffer overflow case.
1916 ----------------------------------------
1917 13 October 2010. Summary of changes for version 20101013:
1919 1) ACPI CA Core Subsystem:
1921 Added support to clear the PCIEXP_WAKE event. When clearing ACPI events,
1923 clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via
1924 HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880.
1926 Changed the type of the predefined namespace object _TZ from ThermalZone
1928 Device. This was found to be confusing to the host software that processes
1929 the various thermal zones, since _TZ is not really a ThermalZone. However,
1931 Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui
1934 Added Windows Vista SP2 to the list of supported _OSI strings. The actual
1935 string is "Windows 2006 SP2".
1937 Eliminated duplicate code in AcpiUtExecute* functions. Now that the
1939 code automatically repairs _HID-related strings, this type of code is no
1940 longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ 878.
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: 89.9K Code, 19.0K Data, 108.9K Total
1950 Debug Version: 166.3K Code, 52.1K Data, 218.4K 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: Implemented additional compile-time validation for _HID strings. The
1958 non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the length
1960 the string must be exactly seven or eight characters. For both _HID and
1962 strings, all characters must be alphanumeric. ACPICA BZ 874.
1964 iASL: Allow certain "null" resource descriptors. Some BIOS code creates
1965 descriptors that are mostly or all zeros, with the expectation that they
1967 be filled in at runtime. iASL now allows this as long as there is a
1969 tag" (name) associated with the descriptor, which gives the ASL a handle
1970 needed to modify the descriptor. ACPICA BZ 873.
1972 Added single-thread support to the generic Unix application OSL. Primarily
1973 for iASL support, this change removes the use of semaphores in the single-
1974 threaded ACPICA tools/applications - increasing performance. The
1975 _MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED
1976 option. ACPICA BZ 879.
1978 AcpiExec: several fixes for the 64-bit version. Adds XSDT support and
1980 for 64-bit DSDT/FACS addresses in the FADT. Lin Ming.
1982 iASL: Moved all compiler messages to a new file, aslmessages.h.
1984 ----------------------------------------
1985 15 September 2010. Summary of changes for version 20100915:
1987 1) ACPI CA Core Subsystem:
1989 Removed the AcpiOsDerivePciId OSL interface. The various host
1991 of this function were not OS-dependent and are now obsolete and can be
1992 removed from all host OSLs. This function has been replaced by
1993 AcpiHwDerivePciId, which is now part of the ACPICA core code.
1994 AcpiHwDerivePciId has been implemented without recursion. Adds one new
1995 module, hwpci.c. ACPICA BZ 857.
1997 Implemented a dynamic repair for _HID and _CID strings. The following
1998 problems are now repaired at runtime: 1) Remove a leading asterisk in the
1999 string, and 2) the entire string is uppercased. Both repairs are in
2000 accordance with the ACPI specification and will simplify host driver code.
2003 The ACPI_THREAD_ID type is no longer configurable, internally it is now
2004 always UINT64. This simplifies the ACPICA code, especially any printf
2006 UINT64 is the only common data type for all thread_id types across all
2007 operating systems. It is now up to the host OSL to cast the native
2009 type to UINT64 before returning the value to ACPICA (via
2011 Lin Ming, Bob Moore.
2013 Added the ACPI_INLINE type to enhance the ACPICA configuration. The
2015 keyword is not standard across compilers, and this type allows inline to
2017 configured on a per-compiler basis. Lin Ming.
2019 Made the system global AcpiGbl_SystemAwakeAndRunning publically available.
2020 Added an extern for this boolean in acpixf.h. Some hosts utilize this
2022 during suspend/restore operations. ACPICA BZ 869.
2024 All code that implements error/warning messages with the "ACPI:" prefix
2026 been moved to a new module, utxferror.c.
2028 The UINT64_OVERLAY was moved to utmath.c, which is the only module where
2030 is used. ACPICA BZ 829. Lin Ming, Bob Moore.
2032 Example Code and Data Size: These are the sizes for the OS-independent
2033 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2034 debug version of the code includes the debug output trace mechanism and
2036 much larger code and data size.
2039 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
2040 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
2042 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
2043 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
2045 2) iASL Compiler/Disassembler and Tools:
2047 iASL/Disassembler: Write ACPI errors to stderr instead of the output file.
2048 This keeps the output files free of random error messages that may
2050 from within the namespace/interpreter code. Used this opportunity to merge
2051 all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ
2052 866. Lin Ming, Bob Moore.
2054 Tools: update some printfs for ansi warnings on size_t. Handle width
2056 of size_t on 32-bit versus 64-bit generations. Lin Ming.
2058 ----------------------------------------
2059 06 August 2010. Summary of changes for version 20100806:
2061 1) ACPI CA Core Subsystem:
2063 Designed and implemented a new host interface to the _OSI support code.
2065 will allow the host to dynamically add or remove multiple _OSI strings, as
2066 well as install an optional handler that is called for each _OSI
2068 Also added a new AML debugger command, 'osi' to display and modify the
2070 _OSI string table, and test support in the AcpiExec utility. See the
2072 reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836.
2074 AcpiInstallInterface - Add an _OSI string.
2075 AcpiRemoveInterface - Delete an _OSI string.
2076 AcpiInstallInterfaceHandler - Install optional _OSI handler.
2078 AcpiOsValidateInterface - no longer used.
2080 source/components/utilities/utosi.c
2082 Re-introduced the support to enable multi-byte transfers for Embedded
2083 Controller (EC) operation regions. A reported problem was found to be a
2085 in the host OS, not in the multi-byte support. Previously, the maximum
2087 size passed to the EC operation region handler was a single byte. There
2089 often EC Fields larger than one byte that need to be transferred, and it
2091 useful for the EC driver to lock these as a single transaction. This
2093 enables single transfers larger than 8 bits. This effectively changes the
2094 access to the EC space from ByteAcc to AnyAcc, and will probably require
2095 changes to the host OS Embedded Controller driver to enable 16/32/64/256-
2097 transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming.
2099 Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The
2100 prototype in acpiosxf.h had the output value pointer as a (void *).
2101 It should be a (UINT64 *). This may affect some host OSL code.
2103 Fixed a couple problems with the recently modified Linux makefiles for
2105 and AcpiExec. These new makefiles place the generated object files in the
2106 local directory so that there can be no collisions between the files that
2108 shared between them that are compiled with different options.
2110 Example Code and Data Size: These are the sizes for the OS-independent
2111 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2112 debug version of the code includes the debug output trace mechanism and
2114 much larger code and data size.
2117 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
2118 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
2120 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
2121 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
2123 2) iASL Compiler/Disassembler and Tools:
2125 iASL/Disassembler: Added a new option (-da, "disassemble all") to load the
2126 namespace from and disassemble an entire group of AML files. Useful for
2127 loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn)
2129 disassembling with one simple command. ACPICA BZ 865. Lin Ming.
2131 iASL: Allow multiple invocations of -e option. This change allows multiple
2132 uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ
2136 ----------------------------------------
2137 02 July 2010. Summary of changes for version 20100702:
2139 1) ACPI CA Core Subsystem:
2141 Implemented several updates to the recently added GPE reference count
2142 support. The model for "wake" GPEs is changing to give the host OS
2144 control of these GPEs. Eventually, the ACPICA core will not execute any
2146 methods, since the host already must execute them. Also, additional
2148 were made to help ensure that the reference counts are kept in proper
2149 synchronization with reality. Rafael J. Wysocki.
2151 1) Ensure that GPEs are not enabled twice during initialization.
2152 2) Ensure that GPE enable masks stay in sync with the reference count.
2153 3) Do not inadvertently enable GPEs when writing GPE registers.
2154 4) Remove the internal wake reference counter and add new AcpiGpeWakeup
2155 interface. This interface will set or clear individual GPEs for wakeup.
2156 5) Remove GpeType argument from AcpiEnable and AcpiDisable. These
2158 are now used for "runtime" GPEs only.
2160 Changed the behavior of the GPE install/remove handler interfaces. The GPE
2162 no longer disabled during this process, as it was found to cause problems
2164 some machines. Rafael J. Wysocki.
2166 Reverted a change introduced in version 20100528 to enable Embedded
2167 Controller multi-byte transfers. This change was found to cause problems
2169 Index Fields and possibly Bank Fields. It will be reintroduced when these
2170 problems have been resolved.
2172 Fixed a problem with references to Alias objects within Package Objects. A
2173 reference to an Alias within the definition of a Package was not always
2174 resolved properly. Aliases to objects like Processors, Thermal zones, etc.
2175 were resolved to the actual object instead of a reference to the object as
2177 should be. Package objects are only allowed to contain integer, string,
2178 buffer, package, and reference objects. Redhat bugzilla 608648.
2180 Example Code and Data Size: These are the sizes for the OS-independent
2181 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2182 debug version of the code includes the debug output trace mechanism and
2184 much larger code and data size.
2187 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
2188 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
2190 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
2191 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
2193 2) iASL Compiler/Disassembler and Tools:
2195 iASL: Implemented a new compiler subsystem to allow definition and
2196 compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc.
2198 are called "ACPI Data Tables", and the new compiler is the "Data Table
2199 Compiler". This compiler is intended to simplify the existing error-prone
2200 process of creating these tables for the BIOS, as well as allowing the
2201 disassembly, modification, recompilation, and override of existing ACPI
2203 tables. See the iASL User Guide for detailed information.
2205 iASL: Implemented a new Template Generator option in support of the new
2207 Table Compiler. This option will create examples of all known ACPI tables
2208 that can be used as the basis for table development. See the iASL
2209 documentation and the -T option.
2211 Disassembler and headers: Added support for the WDDT ACPI table (Watchdog
2214 Updated the Linux makefiles for iASL and AcpiExec to place the generated
2215 object files in the local directory so that there can be no collisions
2216 between the shared files between them that are generated with different
2219 Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec. Use
2220 the #define __APPLE__ to enable this support.
2222 ----------------------------------------
2223 28 May 2010. Summary of changes for version 20100528:
2225 Note: The ACPI 4.0a specification was released on April 5, 2010 and is
2226 available at www.acpi.info. This is primarily an errata release.
2228 1) ACPI CA Core Subsystem:
2230 Undefined ACPI tables: We are looking for the definitions for the
2232 ACPI tables that have been seen in the field: ATKG, IEIT, GSCI.
2234 Implemented support to enable multi-byte transfers for Embedded Controller
2235 (EC) operation regions. Previously, the maximum data size passed to the EC
2236 operation region handler was a single byte. There are often EC Fields
2238 than one byte that need to be transferred, and it is useful for the EC
2240 to lock these as a single transaction. This change enables single
2242 larger than 8 bits. This effectively changes the access to the EC space
2244 ByteAcc to AnyAcc, and will probably require changes to the host OS
2246 Controller driver to enable 16/32/64/256-bit transfers in addition to 8-
2248 transfers. Alexey Starikovskiy, Lin Ming
2250 Implemented a performance enhancement for namespace search and access.
2252 change enhances the performance of namespace searches and walks by adding
2254 backpointer to the parent in each namespace node. On large namespaces,
2256 change can improve overall ACPI performance by up to 9X. Adding a pointer
2258 each namespace node increases the overall size of the internal namespace
2260 about 5%, since each namespace entry usually consists of both a namespace
2261 node and an ACPI operand object. However, this is the first growth of the
2262 namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy.
2264 Implemented a performance optimization that reduces the number of
2266 walks. On control method exit, only walk the namespace if the method is
2268 to have created namespace objects outside of its local scope. Previously,
2270 entire namespace was traversed on each control method exit. This change
2272 improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob
2275 Added support to truncate I/O addresses to 16 bits for Windows
2277 Some ASL code has been seen in the field that inadvertently has bits set
2278 above bit 15. This feature is optional and is enabled if the BIOS requests
2279 any Windows OSI strings. It can also be enabled by the host OS. Matthew
2282 Added support to limit the maximum time for the ASL Sleep() operator. To
2283 prevent accidental deep sleeps, limit the maximum time that Sleep() will
2284 actually sleep. Configurable, the default maximum is two seconds. ACPICA
2287 Added run-time validation support for the _WDG and_WED Microsoft
2289 methods. These objects are defined by "Windows Instrumentation", and are
2291 part of the ACPI spec. ACPICA BZ 860.
2293 Expanded all statistic counters used during namespace and device
2294 initialization from 16 to 32 bits in order to support very large
2297 Replaced all instances of %d in printf format specifiers with %u since
2299 all integers in ACPICA are unsigned.
2301 Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly
2305 Example Code and Data Size: These are the sizes for the OS-independent
2306 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2307 debug version of the code includes the debug output trace mechanism and
2309 much larger code and data size.
2312 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
2313 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
2315 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
2316 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
2318 2) iASL Compiler/Disassembler and Tools:
2320 iASL: Added compiler support for the _WDG and_WED Microsoft predefined
2321 methods. These objects are defined by "Windows Instrumentation", and are
2323 part of the ACPI spec. ACPICA BZ 860.
2325 AcpiExec: added option to disable the memory tracking mechanism. The -dt
2326 option will disable the tracking mechanism, which improves performance
2329 AcpiExec: Restructured the command line options into -d (disable) and -e
2332 ----------------------------------------
2333 28 April 2010. Summary of changes for version 20100428:
2335 1) ACPI CA Core Subsystem:
2337 Implemented GPE support for dynamically loaded ACPI tables. For all GPEs,
2338 including FADT-based and GPE Block Devices, execute any _PRW methods in
2340 new table, and process any _Lxx/_Exx GPE methods in the new table. Any
2341 runtime GPE that is referenced by an _Lxx/_Exx method in the new table is
2342 immediately enabled. Handles the FADT-defined GPEs as well as GPE Block
2343 Devices. Provides compatibility with other ACPI implementations. Two new
2344 files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob
2347 Fixed a regression introduced in version 20100331 within the table manager
2348 where initial table loading could fail. This was introduced in the fix for
2349 AcpiReallocateRootTable. Also, renamed some of fields in the table manager
2350 data structures to clarify their meaning and use.
2352 Fixed a possible allocation overrun during internal object copy in
2353 AcpiUtCopySimpleObject. The original code did not correctly handle the
2355 where the object to be copied was a namespace node. Lin Ming. ACPICA BZ
2358 Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a
2359 possible access beyond end-of-allocation. Also, now fully validate
2361 (size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847
2363 Example Code and Data Size: These are the sizes for the OS-independent
2364 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2365 debug version of the code includes the debug output trace mechanism and
2367 much larger code and data size.
2370 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
2371 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
2373 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
2374 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
2376 2) iASL Compiler/Disassembler and Tools:
2378 iASL: Implemented Min/Max/Len/Gran validation for address resource
2379 descriptors. This change implements validation for the address fields that
2380 are common to all address-type resource descriptors. These checks are
2381 implemented: Checks for valid Min/Max, length within the Min/Max window,
2382 valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as per
2383 table 6-40 in the ACPI 4.0a specification. Also split the large
2385 and aslrestype2.c files into five new files. ACPICA BZ 840.
2387 iASL: Added support for the _Wxx predefined names. This support was
2389 and these names were not recognized by the compiler as valid predefined
2390 names. ACPICA BZ 851.
2392 iASL: Added an error for all predefined names that are defined to return
2394 value and thus must be implemented as Control Methods. These include all
2396 the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous
2397 names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856.
2399 iASL: Implemented the -ts option to emit hex AML data in ASL format, as an
2400 ASL Buffer. Allows ACPI tables to be easily included within ASL files, to
2402 dynamically loaded via the Load() operator. Also cleaned up output for the
2404 ta and -tc options. ACPICA BZ 853.
2406 Tests: Added a new file with examples of extended iASL error checking.
2407 Demonstrates the advanced error checking ability of the iASL compiler.
2408 Available at tests/misc/badcode.asl.
2410 ----------------------------------------
2411 31 March 2010. Summary of changes for version 20100331:
2413 1) ACPI CA Core Subsystem:
2415 Completed a major update for the GPE support in order to improve support
2417 shared GPEs and to simplify both host OS and ACPICA code. Added a
2419 count mechanism to support shared GPEs that require multiple device
2421 Several external interfaces have changed. One external interface has been
2422 removed. One new external interface was added. Most of the GPE external
2423 interfaces now use the GPE spinlock instead of the events mutex (and the
2424 Flags parameter for many GPE interfaces has been removed.) See the updated
2425 ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore,
2427 Wysocki. ACPICA BZ 831.
2430 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus
2436 Implemented write support for DataTable operation regions. These regions
2438 defined via the DataTableRegion() operator. Previously, only read support
2440 implemented. The ACPI specification allows DataTableRegions to be
2444 Implemented a new subsystem option to force a copy of the DSDT to local
2445 memory. Optionally copy the entire DSDT to local memory (instead of simply
2446 mapping it.) There are some (albeit very rare) BIOSs that corrupt or
2448 the original DSDT, creating the need for this option. Default is FALSE, do
2451 Implemented detection of a corrupted or replaced DSDT. This change adds
2452 support to detect a DSDT that has been corrupted and/or replaced from
2454 the OS (by firmware). This is typically catastrophic for the system, but
2456 been seen on some machines. Once this problem has been detected, the DSDT
2457 copy option can be enabled via system configuration. Lin Ming, Bob Moore.
2459 Fixed two problems with AcpiReallocateRootTable during the root table
2461 When copying the root table to the new allocation, the length used was
2462 incorrect. The new size was used instead of the current table size,
2464 too much data was copied. Also, the count of available slots for ACPI
2466 was not set correctly. Alexey Starikovskiy, Bob Moore.
2468 Example Code and Data Size: These are the sizes for the OS-independent
2469 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2470 debug version of the code includes the debug output trace mechanism and
2472 much larger code and data size.
2475 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
2476 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
2478 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
2479 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
2481 2) iASL Compiler/Disassembler and Tools:
2483 iASL: Implement limited typechecking for values returned from predefined
2484 control methods. The type of any returned static (unnamed) object is now
2485 validated. For example, Return(1). ACPICA BZ 786.
2487 iASL: Fixed a predefined name object verification regression. Fixes a
2489 introduced in version 20100304. An error is incorrectly generated if a
2490 predefined name is declared as a static named object with a value defined
2491 using the keywords "Zero", "One", or "Ones". Lin Ming.
2493 iASL: Added Windows 7 support for the -g option (get local ACPI tables) by
2494 reducing the requested registry access rights. ACPICA BZ 842.
2496 Disassembler: fixed a possible fault when generating External()
2498 Introduced in commit ae7d6fd: Properly handle externals with parent-prefix
2499 (carat). Fixes a string length allocation calculation. Lin Ming.
2501 ----------------------------------------
2502 04 March 2010. Summary of changes for version 20100304:
2504 1) ACPI CA Core Subsystem:
2506 Fixed a possible problem with the AML Mutex handling function
2507 AcpiExReleaseMutex where the function could fault under the very rare
2508 condition when the interpreter has blocked, the interpreter lock is
2510 the interpreter is then reentered via the same thread, and attempts to
2511 acquire an AML mutex that was previously acquired. FreeBSD report 140979.
2515 Implemented additional configuration support for the AML "Debug Object".
2516 Output from the debug object can now be enabled via a global variable,
2517 AcpiGbl_EnableAmlDebugObject. This will assist with remote machine
2519 This debug output is now available in the release version of ACPICA
2521 of just the debug version. Also, the entire debug output module can now be
2522 configured out of the ACPICA build if desired. One new file added,
2523 executer/exdebug.c. Lin Ming, Bob Moore.
2525 Added header support for the ACPI MCHI table (Management Controller Host
2526 Interface Table). This table was added in ACPI 4.0, but the defining
2528 has only recently become available.
2530 Standardized output of integer values for ACPICA warnings/errors. Always
2532 0x prefix for hex output, always use %u for unsigned integer decimal
2534 Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about 400
2535 invocations.) These invocations were converted from the original
2536 ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835.
2538 Example Code and Data Size: These are the sizes for the OS-independent
2539 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2540 debug version of the code includes the debug output trace mechanism and
2542 much larger code and data size.
2545 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
2546 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
2548 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
2549 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
2551 2) iASL Compiler/Disassembler and Tools:
2553 iASL: Implemented typechecking support for static (non-control method)
2554 predefined named objects that are declared with the Name() operator. For
2555 example, the type of this object is now validated to be of type Integer:
2556 Name(_BBN, 1). This change migrates the compiler to using the core
2558 name table instead of maintaining a local version. Added a new file,
2559 aslpredef.c. ACPICA BZ 832.
2561 Disassembler: Added support for the ACPI 4.0 MCHI table.
2563 ----------------------------------------
2564 21 January 2010. Summary of changes for version 20100121:
2566 1) ACPI CA Core Subsystem:
2568 Added the 2010 copyright to all module headers and signons. This affects
2569 virtually every file in the ACPICA core subsystem, the iASL compiler, the
2570 tools/utilities, and the test suites.
2572 Implemented a change to the AcpiGetDevices interface to eliminate
2574 invocations of the _STA method. In the case where a specific _HID is
2575 requested, do not run _STA until a _HID match is found. This eliminates
2576 potentially dozens of _STA calls during a search for a particular
2578 which in turn can improve boot times. ACPICA BZ 828. Lin Ming.
2580 Implemented an additional repair for predefined method return values.
2582 to repair unexpected NULL elements within returned Package objects. Create
2584 Integer of value zero, a NULL String, or a zero-length Buffer as
2586 ACPICA BZ 818. Lin Ming, Bob Moore.
2588 Removed the obsolete ACPI_INTEGER data type. This type was introduced as
2590 code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0
2592 64-bit AML integers). It is now obsolete and this change removes it from
2594 ACPICA code base, replaced by UINT64. The original typedef has been
2596 for now for compatibility with existing device driver code. ACPICA BZ 824.
2598 Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field in
2599 the parse tree object.
2601 Added additional warning options for the gcc-4 generation. Updated the
2603 accordingly. This includes some code restructuring to eliminate
2605 code, elimination of some gotos, elimination of unused return values, some
2606 additional casting, and removal of redundant declarations.
2608 Example Code and Data Size: These are the sizes for the OS-independent
2609 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2610 debug version of the code includes the debug output trace mechanism and
2612 much larger code and data size.
2615 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
2616 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
2618 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
2619 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
2621 2) iASL Compiler/Disassembler and Tools:
2623 No functional changes for this release.
2625 ----------------------------------------
2626 14 December 2009. Summary of changes for version 20091214:
2628 1) ACPI CA Core Subsystem:
2630 Enhanced automatic data type conversions for predefined name repairs. This
2631 change expands the automatic repairs/conversions for predefined name
2633 values to make Integers, Strings, and Buffers fully interchangeable. Also,
2635 Buffer can be converted to a Package of Integers if necessary. The
2637 module was completely restructured. Lin Ming, Bob Moore.
2639 Implemented automatic removal of null package elements during predefined
2641 repairs. This change will automatically remove embedded and trailing NULL
2642 package elements from returned package objects that are defined to contain
2644 variable number of sub-packages. The driver is then presented with a
2646 with no null elements to deal with. ACPICA BZ 819.
2648 Implemented a repair for the predefined _FDE and _GTM names. The expected
2649 return value for both names is a Buffer of 5 DWORDs. This repair fixes two
2650 possible problems (both seen in the field), where a package of integers is
2651 returned, or a buffer of BYTEs is returned. With assistance from Jung-uk
2654 Implemented additional module-level code support. This change will
2656 execute module-level code that is not at the root of the namespace (under
2658 Device object, etc.). Now executes the code within the current scope
2660 of the root. ACPICA BZ 762. Lin Ming.
2662 Fixed possible mutex acquisition errors when running _REG methods. Fixes a
2663 problem where mutex errors can occur when running a _REG method that is in
2664 the same scope as a method-defined operation region or an operation region
2665 under a module-level IF block. This type of code is rare, so the problem
2667 not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore.
2669 Fixed a possible memory leak during module-level code execution. An object
2670 could be leaked for each block of executed module-level code if the
2671 interpreter slack mode is enabled This change deletes any implicitly
2673 object from the module-level code block. Lin Ming.
2675 Removed messages for successful predefined repair(s). The repair mechanism
2676 was considered too wordy. Now, messages are only unconditionally emitted
2678 the return object cannot be repaired. Existing messages for successful
2679 repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ
2682 Example Code and Data Size: These are the sizes for the OS-independent
2683 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2684 debug version of the code includes the debug output trace mechanism and
2686 much larger code and data size.
2689 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
2690 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
2692 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
2693 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
2695 2) iASL Compiler/Disassembler and Tools:
2697 iASL: Fixed a regression introduced in 20091112 where intermediate .SRC
2699 were no longer automatically removed at the termination of the compile.
2701 acpiexec: Implemented the -f option to specify default region fill value.
2702 This option specifies the value used to initialize buffers that simulate
2703 operation regions. Default value is zero. Useful for debugging problems
2705 depend on a specific initial value for a region or field.
2707 ----------------------------------------
2708 12 November 2009. Summary of changes for version 20091112:
2710 1) ACPI CA Core Subsystem:
2712 Implemented a post-order callback to AcpiWalkNamespace. The existing
2713 interface only has a pre-order callback. This change adds an additional
2714 parameter for a post-order callback which will be more useful for bus
2716 ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference.
2718 Modified the behavior of the operation region memory mapping cache for
2719 SystemMemory. Ensure that the memory mappings created for operation
2721 do not cross 4K page boundaries. Crossing a page boundary while mapping
2722 regions can cause kernel warnings on some hosts if the pages have
2724 attributes. Such regions are probably BIOS bugs, and this is the
2726 Linux BZ 14445. Lin Ming.
2728 Implemented an automatic repair for predefined methods that must return
2729 sorted lists. This change will repair (by sorting) packages returned by
2731 _PSS, and _TSS. Drivers can now assume that the packages are correctly
2733 and do not contain NULL package elements. Adds one new file,
2734 namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore.
2736 Fixed a possible fault during predefined name validation if a return
2738 object contains NULL elements. Also adds a warning if a NULL element is
2739 followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement
2741 include repair or removal of all such NULL elements where possible.
2743 Implemented additional module-level executable AML code support. This
2745 will execute module-level code that is not at the root of the namespace
2746 (under a Device object, etc.) at table load time. Module-level executable
2748 code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming.
2750 Implemented a new internal function to create Integer objects. This
2752 simplifies miscellaneous object creation code. ACPICA BZ 823.
2754 Reduced the severity of predefined repair messages, Warning to Info. Since
2755 the object was successfully repaired, a warning is too severe. Reduced to
2757 info message for now. These messages may eventually be changed to debug-
2761 Example Code and Data Size: These are the sizes for the OS-independent
2762 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2763 debug version of the code includes the debug output trace mechanism and
2765 much larger code and data size.
2768 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
2769 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
2771 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
2772 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
2774 2) iASL Compiler/Disassembler and Tools:
2776 iASL: Implemented Switch() with While(1) so that Break works correctly.
2778 change correctly implements the Switch operator with a surrounding
2780 so that the Break operator works as expected. ACPICA BZ 461. Lin Ming.
2782 iASL: Added a message if a package initializer list is shorter than
2784 length. Adds a new remark for a Package() declaration if an initializer
2786 exists, but is shorter than the declared length of the package. Although
2787 technically legal, this is probably a coding error and it is seen in the
2788 field. ACPICA BZ 815. Lin Ming, Bob Moore.
2790 iASL: Fixed a problem where the compiler could fault after the maximum
2792 of errors was reached (200).
2794 acpixtract: Fixed a possible warning for pointer cast if the compiler
2796 level set very high.
2798 ----------------------------------------
2799 13 October 2009. Summary of changes for version 20091013:
2801 1) ACPI CA Core Subsystem:
2803 Fixed a problem where an Operation Region _REG method could be executed
2805 than once. If a custom address space handler is installed by the host
2807 the "initialize operation regions" phase of the ACPICA initialization, any
2808 _REG methods for that address space could be executed twice. This change
2809 fixes the problem. ACPICA BZ 427. Lin Ming.
2811 Fixed a possible memory leak for the Scope() ASL operator. When the exact
2812 invocation of "Scope(\)" is executed (change scope to root), one internal
2813 operand object was leaked. Lin Ming.
2815 Implemented a run-time repair for the _MAT predefined method. If the _MAT
2816 return value is defined as a Field object in the AML, and the field
2817 size is less than or equal to the default width of an integer (32 or
2819 can incorrectly return an Integer instead of a Buffer. ACPICA now
2820 automatically repairs this problem. ACPICA BZ 810.
2822 Implemented a run-time repair for the _BIF and _BIX predefined methods.
2824 "OEM Information" field is often incorrectly returned as an Integer with
2825 value zero if the field is not supported by the platform. This is due to
2827 ambiguity in the ACPI specification. The field should always be a string.
2828 ACPICA now automatically repairs this problem by returning a NULL string
2829 within the returned Package. ACPICA BZ 807.
2831 Example Code and Data Size: These are the sizes for the OS-independent
2832 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2833 debug version of the code includes the debug output trace mechanism and
2835 much larger code and data size.
2838 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
2839 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
2841 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
2842 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
2844 2) iASL Compiler/Disassembler and Tools:
2846 Disassembler: Fixed a problem where references to external symbols that
2847 contained one or more parent-prefixes (carats) were not handled correctly,
2848 possibly causing a fault. ACPICA BZ 806. Lin Ming.
2850 Disassembler: Restructured the code so that all functions that handle
2851 external symbols are in a single module. One new file is added,
2854 AML Debugger: Added a max count argument for the Batch command (which
2855 executes multiple predefined methods within the namespace.)
2857 iASL: Updated the compiler documentation (User Reference.) Available at
2858 http://www.acpica.org/documentation/. ACPICA BZ 750.
2860 AcpiXtract: Updated for Lint and other formatting changes. Close all open
2863 ----------------------------------------
2864 03 September 2009. Summary of changes for version 20090903:
2866 1) ACPI CA Core Subsystem:
2868 For Windows Vista compatibility, added the automatic execution of an _INI
2869 method located at the namespace root (\_INI). This method is executed at
2870 table load time. This support is in addition to the automatic execution of
2871 \_SB._INI. Lin Ming.
2873 Fixed a possible memory leak in the interpreter for AML package objects if
2874 the package initializer list is longer than the defined size of the
2876 This apparently can only happen if the BIOS changes the package size on
2878 fly (seen in a _PSS object), as ASL compilers do not allow this. The
2879 interpreter will truncate the package to the defined size (and issue an
2881 message), but previously could leave the extra objects undeleted if they
2883 pre-created during the argument processing (such is the case if the
2885 consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805.
2887 Fixed a problem seen when a Buffer or String is stored to itself via ASL.
2888 This has been reported in the field. Previously, ACPICA would zero out the
2889 buffer/string. Now, the operation is treated as a noop. Provides Windows
2890 compatibility. ACPICA BZ 803. Lin Ming.
2892 Removed an extraneous error message for ASL constructs of the form
2893 Store(LocalX,LocalX) when LocalX is uninitialized. These curious
2895 are seen in many BIOSs and are once again treated as NOOPs and no error is
2896 emitted when they are encountered. ACPICA BZ 785.
2898 Fixed an extraneous warning message if a _DSM reserved method returns a
2899 Package object. _DSM can return any type of object, so validation on the
2900 return type cannot be performed. ACPICA BZ 802.
2902 Example Code and Data Size: These are the sizes for the OS-independent
2903 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2904 debug version of the code includes the debug output trace mechanism and
2906 much larger code and data size.
2909 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
2910 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
2912 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
2913 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
2915 2) iASL Compiler/Disassembler and Tools:
2917 iASL: Fixed a problem with the use of the Alias operator and Resource
2918 Templates. The correct alias is now constructed and no error is emitted.
2921 iASL: Implemented the -I option to specify additional search directories
2923 include files. Allows multiple additional search paths for include files.
2924 Directories are searched in the order specified on the command line (after
2925 the local directory is searched.) ACPICA BZ 800.
2927 iASL: Fixed a problem where the full pathname for include files was not
2928 emitted for warnings/errors. This caused the IDE support to not work
2929 properly. ACPICA BZ 765.
2931 iASL: Implemented the -@ option to specify a Windows-style response file
2932 containing additional command line options. ACPICA BZ 801.
2934 AcpiExec: Added support to load multiple AML files simultaneously (such as
2936 DSDT and multiple SSDTs). Also added support for wildcards within the AML
2937 pathname. These features allow all machine tables to be easily loaded and
2938 debugged together. ACPICA BZ 804.
2940 Disassembler: Added missing support for disassembly of HEST table Error
2944 ----------------------------------------
2945 30 July 2009. Summary of changes for version 20090730:
2947 The ACPI 4.0 implementation for ACPICA is complete with this release.
2949 1) ACPI CA Core Subsystem:
2951 ACPI 4.0: Added header file support for all new and changed ACPI tables.
2952 Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are new
2953 for ACPI 4.0, but have previously been supported in ACPICA are: CPEP,
2955 EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT.
2957 have been some ACPI 4.0 changes to other existing tables. Split the large
2958 actbl1.h header into the existing actbl2.h header. ACPICA BZ 774.
2960 ACPI 4.0: Implemented predefined name validation for all new names. There
2962 31 new names in ACPI 4.0. The predefined validation module was split into
2964 files. The new file is namespace/nsrepair.c. ACPICA BZ 770.
2966 Implemented support for so-called "module-level executable code". This is
2967 executable AML code that exists outside of any control method and is
2969 to be executed at table load time. Although illegal since ACPI 2.0, this
2971 of code still exists and is apparently still being created. Blocks of this
2972 code are now detected and executed as intended. Currently, the code blocks
2973 must exist under either an If, Else, or While construct; these are the
2974 typical cases seen in the field. ACPICA BZ 762. Lin Ming.
2976 Implemented an automatic dynamic repair for predefined names that return
2977 nested Package objects. This applies to predefined names that are defined
2979 return a variable-length Package of sub-packages. If the number of sub-
2980 packages is one, BIOS code is occasionally seen that creates a simple
2982 package with no sub-packages. This code attempts to fix the problem by
2983 wrapping a new package object around the existing package. These methods
2985 be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA BZ
2988 Fixed a regression introduced in 20090625 for the AcpiGetDevices
2990 The _HID/_CID matching was broken and no longer matched IDs correctly.
2994 Fixed a problem with AcpiReset where the reset would silently fail if the
2995 register was one of the protected I/O ports. AcpiReset now bypasses the
2997 validation mechanism. This may eventually be driven into the
3001 Fixed a regression related to the recent update of the AcpiRead/Write
3002 interfaces. A sleep/suspend could fail if the optional PM2 Control
3004 does not exist during an attempt to write the Bus Master Arbitration bit.
3005 (However, some hosts already delete the code that writes this bit, and the
3006 code may in fact be obsolete at this date.) ACPICA BZ 799.
3008 Fixed a problem where AcpiTerminate could fault if inadvertently called
3010 in succession. ACPICA BZ 795.
3012 Example Code and Data Size: These are the sizes for the OS-independent
3013 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3014 debug version of the code includes the debug output trace mechanism and
3016 much larger code and data size.
3019 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
3020 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
3022 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
3023 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
3025 2) iASL Compiler/Disassembler and Tools:
3027 ACPI 4.0: Implemented disassembler support for all new ACPI tables and
3028 changes to existing tables. ACPICA BZ 775.
3030 ----------------------------------------
3031 25 June 2009. Summary of changes for version 20090625:
3033 The ACPI 4.0 Specification was released on June 16 and is available at
3034 www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will
3035 continue for the next few releases.
3037 1) ACPI CA Core Subsystem:
3039 ACPI 4.0: Implemented interpreter support for the IPMI operation region
3040 address space. Includes support for bi-directional data buffers and an
3042 address space handler (to be installed by an IPMI device driver.) ACPICA
3046 ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. Includes
3047 support in both the header files and the disassembler.
3049 Completed a major update for the AcpiGetObjectInfo external interface.
3051 - Support for variable, unlimited length HID, UID, and CID strings.
3052 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA,
3054 - Call the _SxW power methods on behalf of a device object.
3055 - Determine if a device is a PCI root bridge.
3056 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO.
3057 These changes will require an update to all callers of this interface. See
3058 the updated ACPICA Programmer Reference for details. One new source file
3060 been added - utilities/utids.c. ACPICA BZ 368, 780.
3062 Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit
3063 transfers. The Value parameter has been extended from 32 bits to 64 bits
3065 order to support new ACPI 4.0 tables. These changes will require an update
3067 all callers of these interfaces. See the ACPICA Programmer Reference for
3068 details. ACPICA BZ 768.
3070 Fixed several problems with AcpiAttachData. The handler was not invoked
3072 the host node was deleted. The data sub-object was not automatically
3074 when the host node was deleted. The interface to the handler had an unused
3075 parameter, this was removed. ACPICA BZ 778.
3077 Enhanced the function that dumps ACPI table headers. All non-printable
3078 characters in the string fields are now replaced with '?' (Signature,
3080 OemTableId, and CompilerId.) ACPI tables with non-printable characters in
3081 these fields are occasionally seen in the field. ACPICA BZ 788.
3083 Fixed a problem with predefined method repair code where the code that
3084 attempts to repair/convert an object of incorrect type is only executed on
3085 the first time the predefined method is called. The mechanism that
3087 warnings on subsequent calls was interfering with the repair mechanism.
3090 Fixed a possible memory leak in the predefined validation/repair code when
3092 buffer is automatically converted to an expected string object.
3094 Removed obsolete 16-bit files from the distribution and from the current
3096 tree head. ACPICA BZ 776.
3098 Example Code and Data Size: These are the sizes for the OS-independent
3099 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3100 debug version of the code includes the debug output trace mechanism and
3102 much larger code and data size.
3105 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
3106 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
3108 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
3109 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
3111 2) iASL Compiler/Disassembler and Tools:
3113 ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI
3114 operation region keyword. ACPICA BZ 771, 772. Lin Ming.
3116 ACPI 4.0: iASL - implemented compile-time validation support for all new
3117 predefined names and control methods (31 total). ACPICA BZ 769.
3119 ----------------------------------------
3120 21 May 2009. Summary of changes for version 20090521:
3122 1) ACPI CA Core Subsystem:
3124 Disabled the preservation of the SCI enable bit in the PM1 control
3126 The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification to
3128 a "preserved" bit - "OSPM always preserves this bit position", section
3129 4.7.3.2.1. However, some machines fail if this bit is in fact preserved
3130 because the bit needs to be explicitly set by the OS as a workaround. No
3131 machines fail if the bit is not preserved. Therefore, ACPICA no longer
3132 attempts to preserve this bit.
3134 Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or
3135 incorrectly formed _PRT package could cause a fault. Added validation to
3136 ensure that each package element is actually a sub-package.
3138 Implemented a new interface to install or override a single control
3140 AcpiInstallMethod. This interface is useful when debugging in order to
3142 an existing method or to install a missing method without having to
3144 the entire ACPI table. See the ACPICA Programmer Reference for use and
3145 examples. Lin Ming, Bob Moore.
3147 Fixed several reference count issues with the DdbHandle object that is
3148 created from a Load or LoadTable operator. Prevent premature deletion of
3150 object. Also, mark the object as invalid once the table has been unloaded.
3151 This is needed because the handle itself may not be deleted after the
3153 unload, depending on whether it has been stored in a named object by the
3156 Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple
3157 mutexes of the same sync level are acquired but then not released in
3159 opposite order, the internally maintained Current Sync Level becomes
3161 and can cause subsequent execution errors. ACPICA BZ 471.
3163 Changed the allowable release order for ASL mutex objects. The ACPI 4.0
3164 specification has been changed to make the SyncLevel for mutex objects
3166 useful. When releasing a mutex, the SyncLevel of the mutex must now be the
3167 same as the current sync level. This makes more sense than the previous
3169 (SyncLevel less than or equal). This change updates the code to match the
3172 Fixed a problem with the local version of the AcpiOsPurgeCache function.
3174 (local) cache must be locked during all cache object deletions. Andrew
3177 Updated the Load operator to use operation region interfaces. This
3179 direct memory mapping with region access calls. Now, all region accesses
3181 through the installed region handler as they should.
3183 Simplified and optimized the NsGetNextNode function. Reduced parameter
3185 and reduced code for this frequently used function.
3187 Example Code and Data Size: These are the sizes for the OS-independent
3188 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3189 debug version of the code includes the debug output trace mechanism and
3191 much larger code and data size.
3194 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
3195 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
3197 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
3198 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
3200 2) iASL Compiler/Disassembler and Tools:
3202 Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some
3204 with sub-table disassembly and handling invalid sub-tables. Attempt
3206 after an invalid sub-table ID.
3208 ----------------------------------------
3209 22 April 2009. Summary of changes for version 20090422:
3211 1) ACPI CA Core Subsystem:
3213 Fixed a compatibility issue with the recently released I/O port protection
3214 mechanism. For windows compatibility, 1) On a port protection violation,
3215 simply ignore the request and do not return an exception (allow the
3217 method to continue execution.) 2) If only part of the request overlaps a
3218 protected port, read/write the individual ports that are not protected.
3222 Enhanced the execution of the ASL/AML BreakPoint operator so that it
3224 breaks into the AML debugger if the debugger is present. This matches the
3225 ACPI-defined behavior.
3227 Fixed several possible warnings related to the use of the configurable
3228 ACPI_THREAD_ID. This type can now be configured as either an integer or a
3229 pointer with no warnings. Also fixes several warnings in printf-like
3230 statements for the 64-bit build when the type is configured as a pointer.
3233 Fixed a number of possible warnings when compiling with gcc 4+ (depending
3235 warning options.) Examples include printf formats, aliasing, unused
3237 missing prototypes, missing switch default statements, use of non-ANSI
3238 library functions, use of non-ANSI constructs. See generate/unix/Makefile
3240 a list of warning options used with gcc 3 and 4. ACPICA BZ 735.
3242 Example Code and Data Size: These are the sizes for the OS-independent
3243 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3244 debug version of the code includes the debug output trace mechanism and
3246 much larger code and data size.
3249 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
3250 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
3252 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
3253 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
3255 2) iASL Compiler/Disassembler and Tools:
3257 iASL: Fixed a generation warning from Bison 2.3 and fixed several warnings
3261 iASL: Fixed a problem where the Unix/Linux versions of the compiler could
3263 correctly digest Windows/DOS formatted files (with CR/LF).
3265 iASL: Added a new option for "quiet mode" (-va) that produces only the
3266 compilation summary, not individual errors and warnings. Useful for large
3269 AcpiExec: Implemented a new option (-z) to enable a forced semaphore/mutex
3270 timeout that can be used to detect hang conditions during execution of AML
3271 code (includes both internal semaphores and AML-defined mutexes and
3274 Added new makefiles for the generation of acpica in a generic unix-like
3275 environment. These makefiles are intended to generate the acpica tools and
3276 utilities from the original acpica git source tree structure.
3278 Test Suites: Updated and cleaned up the documentation files. Updated the
3279 copyrights to 2009, affecting all source files. Use the new version of
3281 with quiet mode. Increased the number of available semaphores in the
3283 OSL, allowing the aslts to execute fully on Windows. For the Unix OSL,
3285 an alternate implementation of the semaphore timeout to allow aslts to
3286 execute fully on Cygwin.
3288 ----------------------------------------
3289 20 March 2009. Summary of changes for version 20090320:
3291 1) ACPI CA Core Subsystem:
3293 Fixed a possible race condition between AcpiWalkNamespace and dynamic
3295 unloads. Added a reader/writer locking mechanism to allow multiple
3297 namespace walks (readers), but block a dynamic table unload until it can
3299 exclusive write access to the namespace. This fixes a problem where a
3301 unload could (possibly catastrophically) delete the portion of the
3303 that is currently being examined by a walk. Adds a new file, utlock.c,
3305 implements the reader/writer lock mechanism. ACPICA BZ 749.
3307 Fixed a regression introduced in version 20090220 where a change to the
3309 handling could cause the ACPICA subsystem to access non-existent I/O
3312 Modified the handling of FADT register and table (FACS/DSDT) addresses.
3314 FADT can contain both 32-bit and 64-bit versions of these addresses.
3315 Previously, the 64-bit versions were favored, meaning that if both 32 and
3317 versions were valid, but not equal, the 64-bit version was used. This was
3318 found to cause some machines to fail. Now, in this case, the 32-bit
3320 is used instead. This now matches the Windows behavior.
3322 Implemented a new mechanism to protect certain I/O ports. Provides
3324 compatibility and protects the standard PC I/O ports from access via AML
3325 code. Adds a new file, hwvalid.c
3327 Fixed a possible extraneous warning message from the FADT support. The
3328 message warns of a 32/64 length mismatch between the legacy and GAS
3329 definitions for a register.
3331 Removed the obsolete AcpiOsValidateAddress OSL interface. This interface
3333 made obsolete by the port protection mechanism above. It was previously
3335 to validate the entire address range of an operation region, which could
3337 incorrect if the range included illegal ports, but fields within the
3338 operation region did not actually access those ports. Validation is now
3339 performed on a per-field basis instead of the entire region.
3341 Modified the handling of the PM1 Status Register ignored bit (bit 11.)
3342 Ignored bits must be "preserved" according to the ACPI spec. Usually, this
3343 means a read/modify/write when writing to the register. However, for
3345 registers, writing a one means clear the event. Writing a zero means
3347 the event (do not clear.) This behavior is clarified in the ACPI 4.0 spec,
3348 and the ACPICA code now simply always writes a zero to the ignored bit.
3350 Modified the handling of ignored bits for the PM1 A/B Control Registers.
3352 per the ACPI specification, for the control registers, preserve
3353 (read/modify/write) all bits that are defined as either reserved or
3356 Updated the handling of write-only bits in the PM1 A/B Control Registers.
3357 When reading the register, zero the write-only bits as per the ACPI spec.
3358 ACPICA BZ 443. Lin Ming.
3360 Removed "Linux" from the list of supported _OSI strings. Linux no longer
3361 wants to reply true to this request. The Windows strings are the only
3363 through the AML that are tested and known to work properly.
3366 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
3367 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
3369 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
3370 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
3372 2) iASL Compiler/Disassembler and Tools:
3374 Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c
3378 ----------------------------------------
3379 20 February 2009. Summary of changes for version 20090220:
3381 1) ACPI CA Core Subsystem:
3383 Optimized the ACPI register locking. Removed locking for reads from the
3385 bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock is
3386 not required when reading the single-bit registers. The
3387 AcpiGetRegisterUnlocked function is no longer needed and has been removed.
3388 This will improve performance for reads on these registers. ACPICA BZ 760.
3390 Fixed the parameter validation for AcpiRead/Write. Now return
3391 AE_BAD_PARAMETER if the input register pointer is null, and AE_BAD_ADDRESS
3393 the register has an address of zero. Previously, these cases simply
3395 AE_OK. For optional registers such as PM1B status/enable/control, the
3397 should check for a valid register address before calling. ACPICA BZ 748.
3399 Renamed the external ACPI bit register access functions. Renamed
3400 AcpiGetRegister and AcpiSetRegister to clarify the purpose of these
3401 functions. The new names are AcpiReadBitRegister and AcpiWriteBitRegister.
3402 Also, restructured the code for these functions by simplifying the code
3404 and condensing duplicate code to reduce code size.
3406 Added new functions to transparently handle the possibly split PM1 A/B
3407 registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two functions
3408 now handle the split registers for PM1 Status, Enable, and Control. ACPICA
3412 Added a function to handle the PM1 control registers,
3413 AcpiHwWritePm1Control.
3414 This function writes both of the PM1 control registers (A/B). These
3416 are different than the PM1 A/B status and enable registers in that
3418 values can be written to the A/B registers. Most notably, the SLP_TYP bits
3419 can be different, as per the values returned from the _Sx predefined
3422 Removed an extra register write within AcpiHwClearAcpiStatus. This
3424 was writing an optional PM1B status register twice. The existing call to
3426 low-level AcpiHwRegisterWrite automatically handles a possibly split PM1
3428 register. ACPICA BZ 751.
3430 Split out the PM1 Status registers from the FADT. Added new globals for
3432 registers (A/B), similar to the way the PM1 Enable registers are handled.
3433 Instead of overloading the FADT Event Register blocks. This makes the code
3434 clearer and less prone to error.
3436 Fixed the warning message for when the platform contains too many ACPI
3438 for the default size of the global root table data structure. The
3440 for the truncation value was incorrect.
3442 Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this
3443 obsolete macro, since it is now a simple reference to ->common.type. There
3444 were about 150 invocations of the macro across 41 files. ACPICA BZ 755.
3446 Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as
3447 TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to
3448 simply SLEEP_TYPE. ACPICA BZ 754.
3450 Conditionally compile the AcpiSetFirmwareWakingVector64 function. This
3451 function is only needed on 64-bit host operating systems and is thus not
3452 included for 32-bit hosts.
3454 Debug output: print the input and result for invocations of the _OSI
3456 control method via the ACPI_LV_INFO debug level. Also, reduced some of the
3457 verbosity of this debug level. Len Brown.
3459 Example Code and Data Size: These are the sizes for the OS-independent
3460 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3461 debug version of the code includes the debug output trace mechanism and
3463 much larger code and data size.
3466 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
3467 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
3469 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
3470 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
3472 2) iASL Compiler/Disassembler and Tools:
3474 Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the
3475 various legal performance profiles.
3477 ----------------------------------------
3478 23 January 2009. Summary of changes for version 20090123:
3480 1) ACPI CA Core Subsystem:
3482 Added the 2009 copyright to all module headers and signons. This affects
3483 virtually every file in the ACPICA core subsystem, the iASL compiler, and
3484 the tools/utilities.
3486 Implemented a change to allow the host to override any ACPI table,
3488 dynamically loaded tables. Previously, only the DSDT could be replaced by
3490 host. With this change, the AcpiOsTableOverride interface is called for
3492 table found in the RSDT/XSDT during ACPICA initialization, and also
3494 a table is dynamically loaded via the AML Load operator.
3496 Updated FADT flag definitions, especially the Boot Architecture flags.
3498 Debugger: For the Find command, automatically pad the input ACPI name with
3499 underscores if the name is shorter than 4 characters. This enables a match
3500 with the actual namespace entry which is itself padded with underscores.
3502 Example Code and Data Size: These are the sizes for the OS-independent
3503 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3504 debug version of the code includes the debug output trace mechanism and
3506 much larger code and data size.
3509 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
3510 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
3512 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
3513 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
3515 2) iASL Compiler/Disassembler and Tools:
3517 Fix build error under Bison-2.4.
3519 Dissasembler: Enhanced FADT support. Added decoding of the Boot
3521 flags. Now decode all flags, regardless of the FADT version. Flag output
3522 includes the FADT version which first defined each flag.
3524 The iASL -g option now dumps the RSDT to a file (in addition to the FADT
3526 DSDT). Windows only.
3528 ----------------------------------------
3529 04 December 2008. Summary of changes for version 20081204:
3531 1) ACPI CA Core Subsystem:
3533 The ACPICA Programmer Reference has been completely updated and revamped
3535 this release. This includes updates to the external interfaces, OSL
3536 interfaces, the overview sections, and the debugger reference.
3538 Several new ACPICA interfaces have been implemented and documented in the
3539 programmer reference:
3540 AcpiReset - Writes the reset value to the FADT-defined reset register.
3541 AcpiDisableAllGpes - Disable all available GPEs.
3542 AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs.
3543 AcpiGetGpeDevice - Get the GPE block device associated with a GPE.
3544 AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs.
3545 AcpiRead - Low-level read ACPI register (was HwLowLevelRead.)
3546 AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.)
3548 Most of the public ACPI hardware-related interfaces have been moved to a
3550 file, components/hardware/hwxface.c
3552 Enhanced the FADT parsing and low-level ACPI register access: The ACPI
3553 register lengths within the FADT are now used, and the low level ACPI
3554 register access no longer hardcodes the ACPI register lengths. Given that
3555 there may be some risk in actually trusting the FADT register lengths, a
3557 time option was added to fall back to the default hardcoded lengths if the
3558 FADT proves to contain incorrect values - UseDefaultRegisterWidths. This
3559 option is set to true for now, and a warning is issued if a suspicious
3561 register length is overridden with the default value.
3563 Fixed a reference count issue in NsRepairObject. This problem was
3565 in version 20081031 as part of a fix to repair Buffer objects within
3568 Added semaphore support to the Linux/Unix application OS-services layer
3569 (OSL). ACPICA BZ 448. Lin Ming.
3571 Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes
3573 be implemented in the OSL, or will binary semaphores be used instead.
3575 Example Code and Data Size: These are the sizes for the OS-independent
3576 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3577 debug version of the code includes the debug output trace mechanism and
3579 much larger code and data size.
3582 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
3583 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
3585 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
3586 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
3588 2) iASL Compiler/Disassembler and Tools:
3590 iASL: Completed the '-e' option to include additional ACPI tables in order
3592 aid with disassembly and External statement generation. ACPICA BZ 742. Lin
3595 iASL: Removed the "named object in while loop" error. The compiler cannot
3596 determine how many times a loop will execute. ACPICA BZ 730.
3598 Disassembler: Implemented support for FADT revision 2 (MS extension).
3602 Disassembler: Updates for several ACPI data tables (HEST, EINJ, and MCFG).
3604 ----------------------------------------
3605 31 October 2008. Summary of changes for version 20081031:
3607 1) ACPI CA Core Subsystem:
3609 Restructured the ACPICA header files into public/private. acpi.h now
3611 only the "public" acpica headers. All other acpica headers are "private"
3613 should not be included by acpica users. One new file, accommon.h is used
3615 include the commonly used private headers for acpica code generation.
3617 plans include moving all private headers to a new subdirectory.
3619 Implemented an automatic Buffer->String return value conversion for
3620 predefined ACPI methods. For these methods (such as _BIF), added automatic
3621 conversion for return objects that are required to be a String, but a
3623 was found instead. This can happen when reading string battery data from
3625 operation region, because it used to be difficult to convert the data from
3626 buffer to string from within the ASL. Ensures that the host OS is provided
3627 with a valid null-terminated string. Linux BZ 11822.
3629 Updated the FACS waking vector interfaces. Split
3630 AcpiSetFirmwareWakingVector
3631 into two: one for the 32-bit vector, another for the 64-bit vector. This
3633 required because the host OS must setup the wake much differently for each
3634 vector (real vs. protected mode, etc.) and the interface itself should not
3636 deciding which vector to use. Also, eliminated the GetFirmwareWakingVector
3637 interface, as it served no purpose (only the firmware reads the vector, OS
3638 only writes the vector.) ACPICA BZ 731.
3640 Implemented a mechanism to escape infinite AML While() loops. Added a loop
3641 counter to force exit from AML While loops if the count becomes too large.
3642 This can occur in poorly written AML when the hardware does not respond
3643 within a while loop and the loop does not implement a timeout. The maximum
3644 loop count is configurable. A new exception code is returned when a loop
3646 broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore.
3648 Optimized the execution of AML While loops. Previously, a control state
3649 object was allocated and freed for each execution of the loop. The
3650 optimization is to simply reuse the control state for each iteration. This
3651 speeds up the raw loop execution time by about 5%.
3653 Enhanced the implicit return mechanism. For Windows compatibility, return
3655 implicit integer of value zero for methods that contain no executable
3657 Such methods are seen in the field as stubs (presumably), and can cause
3658 drivers to fail if they expect a return value. Lin Ming.
3660 Allow multiple backslashes as root prefixes in namepaths. In a fully
3661 qualified namepath, allow multiple backslash prefixes. This can happen
3663 is seen in the field) because of the use of a double-backslash in strings
3664 (since backslash is the escape character) causing confusion. ACPICA BZ 739
3667 Emit a warning if two different FACS or DSDT tables are discovered in the
3668 FADT. Checks if there are two valid but different addresses for the FACS
3670 DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.)
3672 Consolidated the method argument count validation code. Merged the code
3674 validates control method argument counts into the predefined validation
3675 module. Eliminates possible multiple warnings for incorrect argument
3678 Implemented ACPICA example code. Includes code for ACPICA initialization,
3679 handler installation, and calling a control method. Available at
3680 source/tools/examples.
3682 Added a global pointer for FACS table to simplify internal FACS access.
3684 the global pointer instead of using AcpiGetTableByIndex for each FACS
3686 This simplifies the code for the Global Lock and the Firmware Waking
3689 Example Code and Data Size: These are the sizes for the OS-independent
3690 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3691 debug version of the code includes the debug output trace mechanism and
3693 much larger code and data size.
3696 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
3697 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
3699 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
3700 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
3702 2) iASL Compiler/Disassembler and Tools:
3704 iASL: Improved disassembly of external method calls. Added the -e option
3706 allow the inclusion of additional ACPI tables to help with the disassembly
3708 method invocations and the generation of external declarations during the
3709 disassembly. Certain external method invocations cannot be disassembled
3710 properly without the actual declaration of the method. Use the -e option
3712 include the table where the external method(s) are actually declared. Most
3713 useful for disassembling SSDTs that make method calls back to the master
3714 DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl
3716 -e dsdt.aml ssdt1.aml
3718 iASL: Fix to allow references to aliases within ASL namepaths. Fixes a
3719 problem where the use of an alias within a namepath would result in a not
3720 found error or cause the compiler to fault. Also now allows forward
3721 references from the Alias operator itself. ACPICA BZ 738.
3723 ----------------------------------------
3724 26 September 2008. Summary of changes for version 20080926:
3726 1) ACPI CA Core Subsystem:
3728 Designed and implemented a mechanism to validate predefined ACPI methods
3730 objects. This code validates the predefined ACPI objects (objects whose
3732 start with underscore) that appear in the namespace, at the time they are
3733 evaluated. The argument count and the type of the returned object are
3734 validated against the ACPI specification. The purpose of this validation
3736 to detect problems with the BIOS-implemented predefined ACPI objects
3738 the results are returned to the ACPI-related drivers. Future enhancements
3740 include actual repair of incorrect return objects where possible. Two new
3741 files are nspredef.c and acpredef.h.
3743 Fixed a fault in the AML parser if a memory allocation fails during the Op
3744 completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492.
3746 Fixed an issue with implicit return compatibility. This change improves
3748 implicit return mechanism to be more compatible with the MS interpreter.
3750 Ming, ACPICA BZ 349.
3752 Implemented support for zero-length buffer-to-string conversions. Allow
3754 length strings during interpreter buffer-to-string conversions. For
3756 during the ToDecimalString and ToHexString operators, as well as implicit
3757 conversions. Fiodor Suietov, ACPICA BZ 585.
3759 Fixed two possible memory leaks in the error exit paths of
3760 AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions are
3761 similar in that they use a stack of state objects in order to eliminate
3762 recursion. The stack must be fully unwound and deallocated if an error
3763 occurs. Lin Ming. ACPICA BZ 383.
3765 Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the
3767 ACPI register table. This bit does not exist and is unused. Lin Ming, Bob
3768 Moore ACPICA BZ 442.
3770 Removed the obsolete version number in module headers. Removed the
3771 "$Revision" number that appeared in each module header. This version
3773 was useful under SourceSafe and CVS, but has no meaning under git. It is
3775 only incorrect, it could also be misleading.
3777 Example Code and Data Size: These are the sizes for the OS-independent
3778 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3779 debug version of the code includes the debug output trace mechanism and
3781 much larger code and data size.
3784 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
3785 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
3787 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
3788 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
3790 ----------------------------------------
3791 29 August 2008. Summary of changes for version 20080829:
3793 1) ACPI CA Core Subsystem:
3795 Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type
3796 Reference. Changes include the elimination of cheating on the Object field
3797 for the DdbHandle subtype, addition of a reference class field to
3798 differentiate the various reference types (instead of an AML opcode), and
3800 cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723
3802 Reduce an error to a warning for an incorrect method argument count.
3803 Previously aborted with an error if too few arguments were passed to a
3804 control method via the external ACPICA interface. Now issue a warning
3806 and continue. Handles the case where the method inadvertently declares too
3807 many arguments, but does not actually use the extra ones. Applies mainly
3809 the predefined methods. Lin Ming. Linux BZ 11032.
3811 Disallow the evaluation of named object types with no intrinsic value.
3813 AE_TYPE for objects that have no value and therefore evaluation is
3815 Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation
3817 these types were allowed, but an exception would be generated at some
3819 during the evaluation. Now, the error is generated up front.
3821 Fixed a possible memory leak in the AcpiNsGetExternalPathname function
3822 (nsnames.c). Fixes a leak in the error exit path.
3824 Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These
3826 levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and
3828 interfaces. Also added ACPI_DB_EVENTS to correspond with the existing
3831 Removed obsolete and/or unused exception codes from the acexcep.h header.
3832 There is the possibility that certain device drivers may be affected if
3834 use any of these exceptions.
3836 The ACPICA documentation has been added to the public git source tree,
3838 acpica/documents. Included are the ACPICA programmer reference, the iASL
3839 compiler reference, and the changes.txt release logfile.
3841 Example Code and Data Size: These are the sizes for the OS-independent
3842 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3843 debug version of the code includes the debug output trace mechanism and
3845 much larger code and data size.
3848 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
3849 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
3851 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
3852 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
3854 2) iASL Compiler/Disassembler and Tools:
3856 Allow multiple argument counts for the predefined _SCP method. ACPI 3.0
3857 defines _SCP with 3 arguments. Previous versions defined it with only 1
3858 argument. iASL now allows both definitions.
3860 iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for zero-
3861 length subtables when disassembling ACPI tables. Also fixed a couple of
3862 errors where a full 16-bit table type field was not extracted from the
3866 acpisrc: Improve comment counting mechanism for generating source code
3867 statistics. Count first and last lines of multi-line comments as
3869 not comment lines. Handle Linux legal header in addition to standard
3873 ----------------------------------------
3875 29 July 2008. Summary of changes for version 20080729:
3877 1) ACPI CA Core Subsystem:
3879 Fix a possible deadlock in the GPE dispatch. Remove call to
3880 AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will
3882 to acquire the GPE lock but can deadlock since the GPE lock is already
3884 at dispatch time. This code was introduced in version 20060831 as a
3886 to Linux BZ 6881 and has since been removed from Linux.
3888 Add a function to dereference returned reference objects. Examines the
3890 object from a call to AcpiEvaluateObject. Any Index or RefOf references
3892 automatically dereferenced in an attempt to return something useful (these
3893 reference types cannot be converted into an external ACPI_OBJECT.)
3895 MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105
3897 x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new
3898 subtables for the MADT and one new subtable for the SRAT. Includes
3899 disassembler and AcpiSrc support. Data from the Intel 64 Architecture
3901 Specification, June 2008.
3903 Additional error checking for pathname utilities. Add error check after
3905 calls to AcpiNsGetPathnameLength. Add status return from
3906 AcpiNsBuildExternalPath and check after all calls. Add parameter
3908 to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar.
3910 Return status from the global init function AcpiUtGlobalInitialize. This
3912 used by both the kernel subsystem and the utilities such as iASL compiler.
3913 The function could possibly fail when the caches are initialized. Yang Yi.
3915 Add a function to decode reference object types to strings. Created for
3916 improved error messages.
3918 Improve object conversion error messages. Better error messages during
3920 conversion from internal to the external ACPI_OBJECT. Used for external
3922 to AcpiEvaluateObject.
3924 Example Code and Data Size: These are the sizes for the OS-independent
3925 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3926 debug version of the code includes the debug output trace mechanism and
3928 much larger code and data size.
3931 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
3932 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
3934 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
3935 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
3937 2) iASL Compiler/Disassembler and Tools:
3939 Debugger: fix a possible hang when evaluating non-methods. Fixes a problem
3940 introduced in version 20080701. If the object being evaluated (via execute
3941 command) is not a method, the debugger can hang while trying to obtain
3943 existent parameters.
3945 iASL: relax error for using reserved "_T_x" identifiers. These names can
3946 appear in a disassembled ASL file if they were emitted by the original
3947 compiler. Instead of issuing an error or warning and forcing the user to
3948 manually change these names, issue a remark instead.
3950 iASL: error if named object created in while loop. Emit an error if any
3952 object is created within a While loop. If allowed, this code will generate
3954 run-time error on the second iteration of the loop when an attempt is made
3956 create the same named object twice. ACPICA bugzilla 730.
3958 iASL: Support absolute pathnames for include files. Add support for
3960 pathnames within the Include operator. previously, only relative pathnames
3963 iASL: Enforce minimum 1 interrupt in interrupt macro and Resource
3965 The ACPI spec requires one interrupt minimum. BZ 423
3967 iASL: Handle a missing ResourceSource arg, with a present SourceIndex.
3968 Handles the case for the Interrupt Resource Descriptor where
3969 the ResourceSource argument is omitted but ResourceSourceIndex
3970 is present. Now leave room for the Index. BZ 426
3972 iASL: Prevent error message if CondRefOf target does not exist. Fixes
3974 where an error message is emitted if the target does not exist. BZ 516
3976 iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option
3977 (get ACPI tables on Windows). This was apparently broken in version
3980 AcpiXtract: Handle EOF while extracting data. Correctly handle the case
3982 the EOF happens immediately after the last table in the input file. Print
3983 completion message. Previously, no message was displayed in this case.
3985 ----------------------------------------
3986 01 July 2008. Summary of changes for version 20080701:
3988 0) Git source tree / acpica.org
3990 Fixed a problem where a git-clone from http would not transfer the entire
3993 1) ACPI CA Core Subsystem:
3995 Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one
3996 enable bit. Now performs a read-change-write of the enable register
3998 of simply writing out the cached enable mask. This will prevent
4000 enabling of GPEs if a rogue GPE is received during initialization (before
4002 handlers are installed.)
4004 Implemented a copy for dynamically loaded tables. Previously, dynamically
4005 loaded tables were simply mapped - but on some machines this memory is
4006 corrupted after suspend. Now copy the table to a local buffer. For the
4007 OpRegion case, added checksum verify. Use the table length from the table
4008 header, not the region length. For the Buffer case, use the table length
4009 also. Dennis Noordsij, Bob Moore. BZ 10734
4011 Fixed a problem where the same ACPI table could not be dynamically loaded
4013 unloaded more than once. Without this change, a table cannot be loaded
4015 once it has been loaded/unloaded one time. The current mechanism does not
4016 unregister a table upon an unload. During a load, if the same table is
4018 this no longer returns an exception. BZ 722
4020 Fixed a problem where the wrong descriptor length was calculated for the
4021 EndTag descriptor in 64-bit mode. The "minimal" descriptors such as EndTag
4022 are calculated as 12 bytes long, but the actual length in the internal
4023 descriptor is 16 because of the round-up to 8 on the 64-bit build.
4025 by Linn Crosetto. BZ 728
4027 Fixed a possible memory leak in the Unload operator. The DdbHandle
4029 by Load() did not have its reference count decremented during unload,
4031 to a memory leak. Lin Ming. BZ 727
4033 Fixed a possible memory leak when deleting thermal/processor objects. Any
4034 associated notify handlers (and objects) were not being deleted. Fiodor
4037 Fixed the ordering of the ASCII names in the global mutex table to match
4039 actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug
4041 Vegard Nossum. BZ 726
4043 Enhanced the AcpiGetObjectInfo interface to return the number of required
4044 arguments if the object is a control method. Added this call to the
4046 so the proper number of default arguments are passed to a method. This
4047 prevents a warning when executing methods from AcpiExec.
4049 Added a check for an invalid handle in AcpiGetObjectInfo. Return
4050 AE_BAD_PARAMETER if input handle is invalid. BZ 474
4052 Fixed an extraneous warning from exconfig.c on the 64-bit build.
4054 Example Code and Data Size: These are the sizes for the OS-independent
4055 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4056 debug version of the code includes the debug output trace mechanism and
4058 much larger code and data size.
4061 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
4062 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
4064 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
4065 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
4067 2) iASL Compiler/Disassembler and Tools:
4069 iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both
4070 resource descriptor names.
4072 iASL: Detect invalid ASCII characters in input (windows version). Removed
4074 "-CF" flag from the flex compile, enables correct detection of non-ASCII
4075 characters in the input. BZ 441
4077 iASL: Eliminate warning when result of LoadTable is not used. Eliminate
4079 "result of operation not used" warning when the DDB handle returned from
4080 LoadTable is not used. The warning is not needed. BZ 590
4082 AcpiExec: Add support for dynamic table load/unload. Now calls _CFG method
4084 pass address of table to the AML. Added option to disable OpRegion
4086 to allow creation of an OpRegion with a real address that was passed to
4088 All of this allows testing of the Load and Unload operators from AcpiExec.
4090 Debugger: update tables command for unloaded tables. Handle unloaded
4092 and use the standard table header output routine.
4094 ----------------------------------------
4095 09 June 2008. Summary of changes for version 20080609:
4097 1) ACPI CA Core Subsystem:
4099 Implemented a workaround for reversed _PRT entries. A significant number
4101 BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This
4102 change dynamically detects and repairs this problem. Provides
4104 with MS ACPI. BZ 6859
4106 Simplified the internal ACPI hardware interfaces to eliminate the locking
4107 flag parameter from Register Read/Write. Added a new external interface,
4108 AcpiGetRegisterUnlocked.
4110 Fixed a problem where the invocation of a GPE control method could hang.
4112 was a regression introduced in 20080514. The new method argument count
4113 validation mechanism can enter an infinite loop when a GPE method is
4114 dispatched. Problem fixed by removing the obsolete code that passed GPE
4116 information to the notify handler via the control method parameter
4119 Fixed a problem where the _SST execution status was incorrectly returned
4121 the caller of AcpiEnterSleepStatePrep. This was a regression introduced in
4122 20080514. _SST is optional and a NOT_FOUND exception should never be
4125 Fixed a problem where a deleted object could be accessed from within the
4127 parser. This was a regression introduced in version 20080123 as a fix for
4129 Unload operator. Lin Ming. BZ 10669
4131 Cleaned up the debug operand dump mechanism. Eliminated unnecessary
4133 and eliminated the use of a negative index in a loop. Operands are now
4134 displayed in the correct order, not backwards. This also fixes a
4136 introduced in 20080514 on 64-bit systems where the elimination of
4137 ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ
4140 Fixed a possible memory leak in EvPciConfigRegionSetup where the error
4142 path did not delete a locally allocated structure.
4144 Updated definitions for the DMAR and SRAT tables to synchronize with the
4145 current specifications. Includes disassembler support.
4147 Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect
4148 loop termination value was used. Loop terminated on iteration early,
4150 one mutex. Linn Crosetto
4152 Example Code and Data Size: These are the sizes for the OS-independent
4153 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4154 debug version of the code includes the debug output trace mechanism and
4156 much larger code and data size.
4159 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
4160 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
4162 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
4163 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
4165 2) iASL Compiler/Disassembler and Tools:
4167 Disassembler: Implemented support for EisaId() within _CID objects. Now
4168 disassemble integer _CID objects back to EisaId invocations, including
4169 multiple integers within _CID packages. Includes single-step support for
4172 Disassembler: Added support for DMAR and SRAT table definition changes.
4174 ----------------------------------------
4175 14 May 2008. Summary of changes for version 20080514:
4177 1) ACPI CA Core Subsystem:
4179 Fixed a problem where GPEs were enabled too early during the ACPICA
4180 initialization. This could lead to "handler not installed" errors on some
4181 machines. Moved GPE enable until after _REG/_STA/_INI methods are run.
4183 ensures that all operation regions and devices throughout the namespace
4185 been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916.
4187 Implemented a change to the enter sleep code. Moved execution of the _GTS
4188 method to just before setting sleep enable bit. The execution was moved
4190 AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed
4191 immediately before the SLP_EN bit is set, as per the ACPI specification.
4194 Implemented a fix to disable unknown GPEs (2nd version). Now always
4196 the GPE, even if ACPICA thinks that that it is already disabled. It is
4197 possible that the AML or some other code has enabled the GPE unbeknownst
4201 Fixed a problem with the Field operator where zero-length fields would
4203 an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length
4205 field declarations in Field(), BankField(), and IndexField(). BZ 10606.
4207 Implemented a fix for the Load operator, now load the table at the
4209 root. This reverts a change introduced in version 20071019. The table is
4211 loaded at the namespace root even though this goes against the ACPI
4212 specification. This provides compatibility with other ACPI
4214 The ACPI specification will be updated to reflect this in ACPI 4.0. Lin
4217 Fixed a problem where ACPICA would not Load() tables with unusual
4219 Now ignore ACPI table signature for Load() operator. Only "SSDT" is
4220 acceptable to the ACPI spec, but tables are seen with OEMx and null sigs.
4221 Therefore, signature validation is worthless. Apparently MS ACPI accepts
4223 signatures, ACPICA must be compatible. BZ 10454.
4225 Fixed a possible negative array index in AcpiUtValidateException. Added
4227 fields to the exception string arrays to eliminate a -1 subtraction on the
4230 Updated the debug tracking macros to reduce overall code and data size.
4231 Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings
4232 instead of pointers to static strings. Jan Beulich and Bob Moore.
4234 Implemented argument count checking in control method invocation via
4235 AcpiEvaluateObject. Now emit an error if too few arguments, warning if too
4236 many. This applies only to extern programmatic control method execution,
4238 method-to-method calls within the AML. Lin Ming.
4240 Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is
4242 longer needed, especially with the removal of 16-bit support. It was
4244 mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 bit
4246 32/64-bit platforms is required.
4248 Added the C const qualifier for appropriate string constants -- mostly
4249 MODULE_NAME and printf format strings. Jan Beulich.
4251 Example Code and Data Size: These are the sizes for the OS-independent
4252 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4253 debug version of the code includes the debug output trace mechanism and
4255 much larger code and data size.
4258 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
4259 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
4261 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
4262 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
4264 2) iASL Compiler/Disassembler and Tools:
4266 Implemented ACPI table revision ID validation in the disassembler. Zero is
4267 always invalid. For DSDTs, the ID controls the interpreter integer width.
4269 means 32-bit and this is unusual. 2 or greater is 64-bit.
4271 ----------------------------------------
4272 21 March 2008. Summary of changes for version 20080321:
4274 1) ACPI CA Core Subsystem:
4276 Implemented an additional change to the GPE support in order to suppress
4277 spurious or stray GPEs. The AcpiEvDisableGpe function will now permanently
4278 disable incoming GPEs that are neither enabled nor disabled -- meaning
4280 the GPE is unknown to the system. This should prevent future interrupt
4282 from that GPE. BZ 6217 (Zhang Rui)
4284 Fixed a problem where NULL package elements were not returned to the
4285 AcpiEvaluateObject interface correctly. The element was simply ignored
4286 instead of returning a NULL ACPI_OBJECT package element, potentially
4288 a buffer overflow and/or confusing the caller who expected a fixed number
4290 elements. BZ 10132 (Lin Ming, Bob Moore)
4292 Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word,
4294 Qword), Field, BankField, and IndexField operators when invoked from
4296 an executing control method. In this case, these operators created
4298 nodes that were incorrectly left marked as permanent nodes instead of
4299 temporary nodes. This could cause a problem if there is race condition
4300 between an exiting control method and a running namespace walk. (Reported
4304 Fixed a problem where the CreateField and CreateXXXField operators would
4305 incorrectly allow duplicate names (the name of the field) with no
4309 Implemented several changes for Notify handling. Added support for new
4311 values (ACPI 2.0+) and improved the Notify debug output. Notify on
4312 PowerResource objects is no longer allowed, as per the ACPI specification.
4313 (Bob Moore, Zhang Rui)
4315 All Reference Objects returned via the AcpiEvaluateObject interface are
4317 marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved
4319 NULL objects - either NULL package elements or unresolved named
4322 Fixed a problem where an extraneous debug message was produced for package
4323 objects (when debugging enabled). The message "Package List length larger
4324 than NumElements count" is now produced in the correct case, and is now an
4325 error message rather than a debug message. Added a debug message for the
4326 opposite case, where NumElements is larger than the Package List (the
4328 will be padded out with NULL elements as per the ACPI spec.)
4330 Implemented several improvements for the output of the ASL "Debug" object
4332 clarify and keep all data for a given object on one output line.
4334 Fixed two size calculation issues with the variable-length Start Dependent
4335 resource descriptor.
4337 Example Code and Data Size: These are the sizes for the OS-independent
4338 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4339 debug version of the code includes the debug output trace mechanism and
4341 a much larger code and data size.
4344 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
4345 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
4347 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
4348 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
4350 2) iASL Compiler/Disassembler and Tools:
4352 Fixed a problem with the use of the Switch operator where execution of the
4353 containing method by multiple concurrent threads could cause an
4354 AE_ALREADY_EXISTS exception. This is caused by the fact that there is no
4355 actual Switch opcode, it must be simulated with local named temporary
4356 variables and if/else pairs. The solution chosen was to mark any method
4358 uses Switch as Serialized, thus preventing multiple thread entries. BZ
4361 ----------------------------------------
4362 13 February 2008. Summary of changes for version 20080213:
4364 1) ACPI CA Core Subsystem:
4366 Implemented another MS compatibility design change for GPE/Notify
4368 GPEs are now cleared/enabled asynchronously to allow all pending notifies
4370 complete first. It is expected that the OSL will queue the enable request
4371 behind all pending notify requests (may require changes to the local host
4373 in AcpiOsExecute). Alexey Starikovskiy.
4375 Fixed a problem where buffer and package objects passed as arguments to a
4376 control method via the external AcpiEvaluateObject interface could cause
4378 AE_AML_INTERNAL exception depending on the order and type of operators
4379 executed by the target control method.
4381 Fixed a problem where resource descriptor size optimization could cause a
4382 problem when a _CRS resource template is passed to a _SRS method. The _SRS
4383 resource template must use the same descriptors (with the same size) as
4384 returned from _CRS. This change affects the following resource
4386 IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ
4389 Fixed a problem where a CopyObject to RegionField, BankField, and
4391 objects did not perform an implicit conversion as it should. These types
4393 retain their initial type permanently as per the ACPI specification.
4395 a CopyObject to all other object types should not perform an implicit
4396 conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388
4398 Fixed a problem with the AcpiGetDevices interface where the mechanism to
4399 match device CIDs did not examine the entire list of available CIDs, but
4400 instead aborted on the first non-matching CID. Andrew Patterson.
4402 Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro
4404 inadvertently changed to return a 16-bit value instead of a 32-bit value,
4405 truncating the upper dword of a 64-bit value. This macro is only used to
4406 display debug output, so no incorrect calculations were made. Also,
4407 reimplemented the macro so that a 64-bit shift is not performed by
4408 inefficient compilers.
4410 Added missing va_end statements that should correspond with each va_start
4413 Example Code and Data Size: These are the sizes for the OS-independent
4414 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4415 debug version of the code includes the debug output trace mechanism and
4417 a much larger code and data size.
4420 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
4421 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
4423 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
4424 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
4426 2) iASL Compiler/Disassembler and Tools:
4428 Implemented full disassembler support for the following new ACPI tables:
4429 BERT, EINJ, and ERST. Implemented partial disassembler support for the
4430 complicated HEST table. These tables support the Windows Hardware Error
4431 Architecture (WHEA).
4433 ----------------------------------------
4434 23 January 2008. Summary of changes for version 20080123:
4436 1) ACPI CA Core Subsystem:
4438 Added the 2008 copyright to all module headers and signons. This affects
4439 virtually every file in the ACPICA core subsystem, the iASL compiler, and
4440 the tools/utilities.
4442 Fixed a problem with the SizeOf operator when used with Package and Buffer
4443 objects. These objects have deferred execution for some arguments, and the
4444 execution is now completed before the SizeOf is executed. This problem
4446 unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore)
4450 Implemented an enhancement to the interpreter "slack mode". In the absence
4452 an explicit return or an implicitly returned object from the last executed
4453 opcode, a control method will now implicitly return an integer of value 0
4455 Microsoft compatibility. (Lin Ming) BZ 392
4457 Fixed a problem with the Load operator where an exception was not returned
4459 the case where the table is already loaded. (Lin Ming) BZ 463
4461 Implemented support for the use of DDBHandles as an Indexed Reference, as
4463 the ACPI spec. (Lin Ming) BZ 486
4465 Implemented support for UserTerm (Method invocation) for the Unload
4467 as per the ACPI spec. (Lin Ming) BZ 580
4469 Fixed a problem with the LoadTable operator where the OemId and OemTableId
4470 input strings could cause unexpected failures if they were shorter than
4472 maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576
4474 Implemented support for UserTerm (Method invocation) for the Unload
4476 as per the ACPI spec. (Lin Ming) BZ 580
4478 Implemented header file support for new ACPI tables - BERT, ERST, EINJ,
4480 IBFT, UEFI, WDAT. Disassembler support is forthcoming.
4482 Example Code and Data Size: These are the sizes for the OS-independent
4483 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4484 debug version of the code includes the debug output trace mechanism and
4486 a much larger code and data size.
4489 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
4490 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
4492 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
4493 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
4495 2) iASL Compiler/Disassembler and Tools:
4497 Implemented support in the disassembler for checksum validation on
4499 binary DSDTs and SSDTs. If incorrect, a message is displayed within the
4501 header dump at the start of the disassembly.
4503 Implemented additional debugging information in the namespace listing file
4504 created during compilation. In addition to the namespace hierarchy, the
4506 pathname to each namespace object is displayed.
4508 Fixed a problem with the disassembler where invalid ACPI tables could
4510 faults or infinite loops.
4512 Fixed an unexpected parse error when using the optional "parameter types"
4513 list in a control method declaration. (Lin Ming) BZ 397
4515 Fixed a problem where two External declarations with the same name did not
4516 cause an error (Lin Ming) BZ 509
4518 Implemented support for full TermArgs (adding Argx, Localx and method
4519 invocation) for the ParameterData parameter to the LoadTable operator.
4523 ----------------------------------------
4524 19 December 2007. Summary of changes for version 20071219:
4526 1) ACPI CA Core Subsystem:
4528 Implemented full support for deferred execution for the TermArg string
4529 arguments for DataTableRegion. This enables forward references and full
4530 operand resolution for the three string arguments. Similar to
4532 deferred argument execution.) Lin Ming. BZ 430
4534 Implemented full argument resolution support for the BankValue argument to
4535 BankField. Previously, only constants were supported, now any TermArg may
4537 used. Lin Ming BZ 387, 393
4539 Fixed a problem with AcpiGetDevices where the search of a branch of the
4540 device tree could be terminated prematurely. In accordance with the ACPI
4541 specification, the search down the current branch is terminated if a
4543 is both not present and not functional (instead of just not present.)
4547 Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly
4549 the underlying AML code changed the GPE enable registers. Now, any unknown
4550 incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately
4552 instead of simply ignored. Rui Zhang.
4554 Fixed a problem with Index Fields where the Index register was incorrectly
4555 limited to a maximum of 32 bits. Now any size may be used.
4557 Fixed a couple memory leaks associated with "implicit return" objects when
4558 the AML Interpreter slack mode is enabled. Lin Ming BZ 349
4560 Example Code and Data Size: These are the sizes for the OS-independent
4561 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4562 debug version of the code includes the debug output trace mechanism and
4564 a much larger code and data size.
4567 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
4568 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
4570 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
4571 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
4573 ----------------------------------------
4574 14 November 2007. Summary of changes for version 20071114:
4576 1) ACPI CA Core Subsystem:
4578 Implemented event counters for each of the Fixed Events, the ACPI SCI
4579 (interrupt) itself, and control methods executed. Named
4580 AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively.
4582 should be useful for debugging and statistics.
4584 Implemented a new external interface, AcpiGetStatistics, to retrieve the
4585 contents of the various event counters. Returns the current values for
4586 AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and
4587 AcpiMethodCount. The interface can be expanded in the future if new
4589 are added. Device drivers should use this interface rather than access the
4592 Fixed a problem with the FromBCD and ToBCD operators. With some compilers,
4593 the ShortDivide function worked incorrectly, causing problems with the BCD
4594 functions with large input values. A truncation from 64-bit to 32-bit
4595 inadvertently occurred. Internal BZ 435. Lin Ming
4597 Fixed a problem with Index references passed as method arguments.
4599 passed as arguments to control methods were dereferenced immediately
4601 control was passed to the called method). The references are now correctly
4602 passed directly to the called method. BZ 5389. Lin Ming
4604 Fixed a problem with CopyObject used in conjunction with the Index
4606 The reference was incorrectly dereferenced before the copy. The reference
4608 now correctly copied. BZ 5391. Lin Ming
4610 Fixed a problem with Control Method references within Package objects.
4612 references are now correctly generated. This completes the package
4613 construction overhaul that began in version 20071019.
4615 Example Code and Data Size: These are the sizes for the OS-independent
4616 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4617 debug version of the code includes the debug output trace mechanism and
4619 a much larger code and data size.
4622 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
4623 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
4625 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
4626 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
4629 2) iASL Compiler/Disassembler and Tools:
4631 The AcpiExec utility now installs handlers for all of the predefined
4632 Operation Region types. New types supported are: PCI_Config, CMOS, and
4635 Fixed a problem with the 64-bit version of AcpiExec where the extended
4637 bit) address fields for the DSDT and FACS within the FADT were not being
4638 used, causing truncation of the upper 32-bits of these addresses. Lin Ming
4641 ----------------------------------------
4642 19 October 2007. Summary of changes for version 20071019:
4644 1) ACPI CA Core Subsystem:
4646 Fixed a problem with the Alias operator when the target of the alias is a
4647 named ASL operator that opens a new scope -- Scope, Device, PowerResource,
4648 Processor, and ThermalZone. In these cases, any children of the original
4649 operator could not be accessed via the alias, potentially causing
4651 AE_NOT_FOUND exceptions. (BZ 9067)
4653 Fixed a problem with the Package operator where all named references were
4654 created as object references and left otherwise unresolved. According to
4656 ACPI specification, a Package can only contain Data Objects or references
4658 control methods. The implication is that named references to Data Objects
4659 (Integer, Buffer, String, Package, BufferField, Field) should be resolved
4660 immediately upon package creation. This is the approach taken with this
4661 change. References to all other named objects (Methods, Devices, Scopes,
4662 etc.) are all now properly created as reference objects. (BZ 5328)
4664 Reverted a change to Notify handling that was introduced in version
4665 20070508. This version changed the Notify handling from asynchronous to
4666 fully synchronous (Device driver Notify handling with respect to the
4668 ASL operator). It was found that this change caused more problems than it
4669 solved and was removed by most users.
4671 Fixed a problem with the Increment and Decrement operators where the type
4673 the target object could be unexpectedly and incorrectly changed. (BZ 353)
4676 Fixed a problem with the Load and LoadTable operators where the table
4677 location within the namespace was ignored. Instead, the table was always
4678 loaded into the root or current scope. Lin Ming.
4680 Fixed a problem with the Load operator when loading a table from a buffer
4681 object. The input buffer was prematurely zeroed and/or deleted. (BZ 577)
4683 Fixed a problem with the Debug object where a store of a DdbHandle
4685 object to the Debug object could cause a fault.
4687 Added a table checksum verification for the Load operator, in the case
4689 the load is from a buffer. (BZ 578).
4691 Implemented additional parameter validation for the LoadTable operator.
4693 length of the input strings SignatureString, OemIdString, and OemTableId
4695 now checked for maximum lengths. (BZ 582) Lin Ming.
4697 Example Code and Data Size: These are the sizes for the OS-independent
4698 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4699 debug version of the code includes the debug output trace mechanism and
4701 a much larger code and data size.
4704 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
4705 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
4707 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
4708 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
4711 2) iASL Compiler/Disassembler:
4713 Fixed a problem where if a single file was specified and the file did not
4714 exist, no error message was emitted. (Introduced with wildcard support in
4717 ----------------------------------------
4718 19 September 2007. Summary of changes for version 20070919:
4720 1) ACPI CA Core Subsystem:
4722 Designed and implemented new external interfaces to install and remove
4723 handlers for ACPI table-related events. Current events that are defined
4725 LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as
4726 they are dynamically loaded and unloaded. See AcpiInstallTableHandler and
4727 AcpiRemoveTableHandler. (Lin Ming and Bob Moore)
4729 Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag
4730 (acpi_serialized option on Linux) could cause some systems to hang during
4731 initialization. (Bob Moore) BZ 8171
4733 Fixed a problem where objects of certain types (Device, ThermalZone,
4734 Processor, PowerResource) can be not found if they are declared and
4735 referenced from within the same control method (Lin Ming) BZ 341
4737 Example Code and Data Size: These are the sizes for the OS-independent
4738 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4739 debug version of the code includes the debug output trace mechanism and
4741 a much larger code and data size.
4744 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
4745 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
4747 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
4748 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
4751 2) iASL Compiler/Disassembler:
4753 Implemented support to allow multiple files to be compiled/disassembled in
4755 single invocation. This includes command line wildcard support for both
4757 Windows and Unix versions of the compiler. This feature simplifies the
4758 disassembly and compilation of multiple ACPI tables in a single directory.
4760 ----------------------------------------
4761 08 May 2007. Summary of changes for version 20070508:
4763 1) ACPI CA Core Subsystem:
4765 Implemented a Microsoft compatibility design change for the handling of
4767 Notify AML operator. Previously, notify handlers were dispatched and
4768 executed completely asynchronously in a deferred thread. The new design
4769 still executes the notify handlers in a different thread, but the original
4770 thread that executed the Notify() now waits at a synchronization point for
4771 the notify handler to complete. Some machines depend on a synchronous
4773 operator in order to operate correctly.
4775 Implemented support to allow Package objects to be passed as method
4776 arguments to the external AcpiEvaluateObject interface. Previously, this
4777 would return the AE_NOT_IMPLEMENTED exception. This feature had not been
4778 implemented since there were no reserved control methods that required it
4781 Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs
4783 contained invalid non-zero values in reserved fields could cause later
4784 failures because these fields have meaning in later revisions of the FADT.
4785 For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The
4787 are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.)
4789 Fixed a problem where the Global Lock handle was not properly updated if a
4790 thread that acquired the Global Lock via executing AML code then attempted
4791 to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by
4795 Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list
4796 could be corrupted if the interrupt being removed was at the head of the
4797 list. Reported by Linn Crosetto.
4799 Example Code and Data Size: These are the sizes for the OS-independent
4800 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4801 debug version of the code includes the debug output trace mechanism and
4803 a much larger code and data size.
4806 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
4807 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
4809 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
4810 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
4812 ----------------------------------------
4813 20 March 2007. Summary of changes for version 20070320:
4815 1) ACPI CA Core Subsystem:
4817 Implemented a change to the order of interpretation and evaluation of AML
4818 operand objects within the AML interpreter. The interpreter now evaluates
4819 operands in the order that they appear in the AML stream (and the
4820 corresponding ASL code), instead of in the reverse order (after the entire
4821 operand list has been parsed). The previous behavior caused several subtle
4822 incompatibilities with the Microsoft AML interpreter as well as being
4823 somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov.
4825 Implemented a change to the ACPI Global Lock support. All interfaces to
4827 global lock now allow the same thread to acquire the lock multiple times.
4828 This affects the AcpiAcquireGlobalLock external interface to the global
4830 as well as the internal use of the global lock to support AML fields -- a
4831 control method that is holding the global lock can now simultaneously
4833 AML fields that require global lock protection. Previously, in both cases,
4834 this would have resulted in an AE_ALREADY_ACQUIRED exception. The change
4836 AcpiAcquireGlobalLock is of special interest to drivers for the Embedded
4837 Controller. There is no change to the behavior of the AML Acquire
4839 as this can already be used to acquire a mutex multiple times by the same
4840 thread. BZ 8066. With assistance from Alexey Starikovskiy.
4842 Fixed a problem where invalid objects could be referenced in the AML
4843 Interpreter after error conditions. During operand evaluation, ensure that
4844 the internal "Return Object" field is cleared on error and only valid
4845 pointers are stored there. Caused occasional access to deleted objects
4847 resulted in "large reference count" warning messages. Valery Podrezov.
4849 Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur
4851 deeply nested control method invocations. BZ 7873, local BZ 487. Valery
4854 Fixed an internal problem with the handling of result objects on the
4855 interpreter result stack. BZ 7872. Valery Podrezov.
4857 Removed obsolete code that handled the case where AML_NAME_OP is the
4859 of a reference (Reference.Opcode). This code was no longer necessary. BZ
4860 7874. Valery Podrezov.
4862 Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This was
4864 remnant from the previously discontinued 16-bit support.
4866 Example Code and Data Size: These are the sizes for the OS-independent
4867 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4868 debug version of the code includes the debug output trace mechanism and
4870 a much larger code and data size.
4873 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
4874 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
4876 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
4877 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
4879 ----------------------------------------
4880 26 January 2007. Summary of changes for version 20070126:
4882 1) ACPI CA Core Subsystem:
4884 Added the 2007 copyright to all module headers and signons. This affects
4885 virtually every file in the ACPICA core subsystem, the iASL compiler, and
4888 Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable
4889 during a table load. A bad pointer was passed in the case where the DSDT
4891 overridden, causing a fault in this case.
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: 78.0K Code, 17.1K Data, 95.1K Total
4901 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
4903 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
4904 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
4906 ----------------------------------------
4907 15 December 2006. Summary of changes for version 20061215:
4909 1) ACPI CA Core Subsystem:
4911 Support for 16-bit ACPICA has been completely removed since it is no
4913 necessary and it clutters the code. All 16-bit macros, types, and
4914 conditional compiles have been removed, cleaning up and simplifying the
4916 across the entire subsystem. DOS support is no longer needed since the
4917 bootable Linux firmware kit is now available.
4919 The handler for the Global Lock is now removed during AcpiTerminate to
4920 enable a clean subsystem restart, via the implementation of the
4921 AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz,
4924 Implemented enhancements to the multithreading support within the debugger
4925 to enable improved multithreading debugging and evaluation of the
4929 Debugger: Enhanced the Statistics/Memory command to emit the total
4931 memory used during the execution, as well as the maximum memory consumed
4933 each of the various object types. (Valery Podrezov)
4935 Example Code and Data Size: These are the sizes for the OS-independent
4936 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4937 debug version of the code includes the debug output trace mechanism and
4939 a much larger code and data size.
4942 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
4943 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
4945 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
4946 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
4949 2) iASL Compiler/Disassembler and Tools:
4951 AcpiExec: Implemented a new option (-m) to display full memory use
4952 statistics upon subsystem/program termination. (Valery Podrezov)
4954 ----------------------------------------
4955 09 November 2006. Summary of changes for version 20061109:
4957 1) ACPI CA Core Subsystem:
4959 Optimized the Load ASL operator in the case where the source operand is an
4960 operation region. Simply map the operation region memory, instead of
4961 performing a bytewise read. (Region must be of type SystemMemory, see
4964 Fixed the Load ASL operator for the case where the source operand is a
4965 region field. A buffer object is also allowed as the source operand. BZ
4968 Fixed a problem where the Load ASL operator allowed the source operand to
4970 an operation region of any type. It is now restricted to regions of type
4971 SystemMemory, as per the ACPI specification. BZ 481
4973 Additional cleanup and optimizations for the new Table Manager code.
4975 AcpiEnable will now fail if all of the required ACPI tables are not loaded
4976 (FADT, FACS, DSDT). BZ 477
4978 Added #pragma pack(8/4) to acobject.h to ensure that the structures in
4980 header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been
4981 manually optimized to be aligned and will not work if it is byte-packed.
4983 Example Code and Data Size: These are the sizes for the OS-independent
4984 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4985 debug version of the code includes the debug output trace mechanism and
4987 a much larger code and data size.
4990 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
4991 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
4993 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
4994 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
4997 2) iASL Compiler/Disassembler and Tools:
4999 Fixed a problem where the presence of the _OSI predefined control method
5000 within complex expressions could cause an internal compiler error.
5002 AcpiExec: Implemented full region support for multiple address spaces.
5003 SpaceId is now part of the REGION object. BZ 429
5005 ----------------------------------------
5006 11 October 2006. Summary of changes for version 20061011:
5008 1) ACPI CA Core Subsystem:
5010 Completed an AML interpreter performance enhancement for control method
5011 execution. Previously a 2-pass parse/execution, control methods are now
5012 completely parsed and executed in a single pass. This improves overall
5013 interpreter performance by ~25%, reduces code size, and reduces CPU stack
5014 use. (Valery Podrezov + interpreter changes in version 20051202 that
5015 eliminated namespace loading during the pass one parse.)
5017 Implemented _CID support for PCI Root Bridge detection. If the _HID does
5019 match the predefined PCI Root Bridge IDs, the _CID list (if present) is
5021 obtained and also checked for an ID match.
5023 Implemented additional support for the PCI _ADR execution: upsearch until
5025 device scope is found before executing _ADR. This allows PCI_Config
5026 operation regions to be declared locally within control methods underneath
5029 Fixed a problem with a possible race condition between threads executing
5030 AcpiWalkNamespace and the AML interpreter. This condition was removed by
5031 modifying AcpiWalkNamespace to (by default) ignore all temporary namespace
5032 entries created during any concurrent control method execution. An
5033 additional namespace race condition is known to exist between
5034 AcpiWalkNamespace and the Load/Unload ASL operators and is still under
5037 Restructured the AML ParseLoop function, breaking it into several
5038 subfunctions in order to reduce CPU stack use and improve maintainability.
5041 AcpiGetHandle: Fix for parameter validation to detect invalid combinations
5042 of prefix handle and pathname. BZ 478
5044 Example Code and Data Size: These are the sizes for the OS-independent
5045 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5046 debug version of the code includes the debug output trace mechanism and
5048 a much larger code and data size.
5051 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
5052 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
5054 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
5055 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
5057 2) iASL Compiler/Disassembler and Tools:
5059 Ported the -g option (get local ACPI tables) to the new ACPICA Table
5061 to restore original behavior.
5063 ----------------------------------------
5064 27 September 2006. Summary of changes for version 20060927:
5066 1) ACPI CA Core Subsystem:
5068 Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister.
5069 These functions now use a spinlock for mutual exclusion and the interrupt
5070 level indication flag is not needed.
5072 Fixed a problem with the Global Lock where the lock could appear to be
5073 obtained before it is actually obtained. The global lock semaphore was
5074 inadvertently created with one unit instead of zero units. (BZ 464) Fiodor
5077 Fixed a possible memory leak and fault in AcpiExResolveObjectToValue
5079 a read from a buffer or region field. (BZ 458) Fiodor Suietov.
5081 Example Code and Data Size: These are the sizes for the OS-independent
5082 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5083 debug version of the code includes the debug output trace mechanism and
5085 a much larger code and data size.
5088 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
5089 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
5091 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
5092 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
5095 2) iASL Compiler/Disassembler and Tools:
5097 Fixed a compilation problem with the pre-defined Resource Descriptor field
5098 names where an "object does not exist" error could be incorrectly
5100 if the parent ResourceTemplate pathname places the template within a
5101 different namespace scope than the current scope. (BZ 7212)
5103 Fixed a problem where the compiler could hang after syntax errors detected
5104 in an ElseIf construct. (BZ 453)
5106 Fixed a problem with the AmlFilename parameter to the DefinitionBlock()
5107 operator. An incorrect output filename was produced when this parameter
5109 a null string (""). Now, the original input filename is used as the AML
5110 output filename, with an ".aml" extension.
5112 Implemented a generic batch command mode for the AcpiExec utility (execute
5113 any AML debugger command) (Valery Podrezov).
5115 ----------------------------------------
5116 12 September 2006. Summary of changes for version 20060912:
5118 1) ACPI CA Core Subsystem:
5120 Enhanced the implementation of the "serialized mode" of the interpreter
5121 (enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is
5122 specified, instead of creating a serialization semaphore per control
5124 the interpreter lock is simply no longer released before a blocking
5125 operation during control method execution. This effectively makes the AML
5126 Interpreter single-threaded. The overhead of a semaphore per-method is
5129 Fixed a regression where an error was no longer emitted if a control
5131 attempts to create 2 objects of the same name. This once again returns
5132 AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism
5134 will dynamically serialize the control method to possible prevent future
5137 Integrated a fix for a problem with PCI Express HID detection in the PCI
5138 Config Space setup procedure. (BZ 7145)
5140 Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the
5141 AcpiHwInitialize function - the FADT registers are now validated when the
5144 Added two new warnings during FADT verification - 1) if the FADT is larger
5145 than the largest known FADT version, and 2) if there is a mismatch between
5147 32-bit block address and the 64-bit X counterpart (when both are non-
5150 Example Code and Data Size: These are the sizes for the OS-independent
5151 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5152 debug version of the code includes the debug output trace mechanism and
5154 a much larger code and data size.
5157 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
5158 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
5160 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
5161 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
5164 2) iASL Compiler/Disassembler and Tools:
5166 Fixed a problem with the implementation of the Switch() operator where the
5167 temporary variable was declared too close to the actual Switch, instead of
5168 at method level. This could cause a problem if the Switch() operator is
5169 within a while loop, causing an error on the second iteration. (BZ 460)
5171 Disassembler - fix for error emitted for unknown type for target of scope
5172 operator. Now, ignore it and continue.
5174 Disassembly of an FADT now verifies the input FADT and reports any errors
5175 found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs.
5177 Disassembly of raw data buffers with byte initialization data now prefixes
5178 each output line with the current buffer offset.
5180 Disassembly of ASF! table now includes all variable-length data fields at
5181 the end of some of the subtables.
5183 The disassembler now emits a comment if a buffer appears to be a
5184 ResourceTemplate, but cannot be disassembled as such because the EndTag
5186 not appear at the very end of the buffer.
5188 AcpiExec - Added the "-t" command line option to enable the serialized
5190 of the AML interpreter.
5192 ----------------------------------------
5193 31 August 2006. Summary of changes for version 20060831:
5195 1) ACPI CA Core Subsystem:
5197 Miscellaneous fixes for the Table Manager:
5198 - Correctly initialize internal common FADT for all 64-bit "X" fields
5199 - Fixed a couple table mapping issues during table load
5200 - Fixed a couple alignment issues for IA64
5201 - Initialize input array to zero in AcpiInitializeTables
5202 - Additional parameter validation for AcpiGetTable, AcpiGetTableHeader,
5205 Change for GPE support: when a "wake" GPE is received, all wake GPEs are
5207 immediately disabled to prevent the waking GPE from firing again and to
5208 prevent other wake GPEs from interrupting the wake process.
5210 Added the AcpiGpeCount global that tracks the number of processed GPEs, to
5211 be used for debugging systems with a large number of ACPI interrupts.
5213 Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in
5214 both the ACPICA headers and the disassembler.
5216 Example Code and Data Size: These are the sizes for the OS-independent
5217 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5218 debug version of the code includes the debug output trace mechanism and
5220 a much larger code and data size.
5223 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
5224 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
5226 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
5227 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
5230 2) iASL Compiler/Disassembler and Tools:
5232 Disassembler support for the DMAR ACPI table.
5234 ----------------------------------------
5235 23 August 2006. Summary of changes for version 20060823:
5237 1) ACPI CA Core Subsystem:
5239 The Table Manager component has been completely redesigned and
5240 reimplemented. The new design is much simpler, and reduces the overall
5242 and data size of the kernel-resident ACPICA by approximately 5%. Also, it
5244 now possible to obtain the ACPI tables very early during kernel
5245 initialization, even before dynamic memory management is initialized.
5246 (Alexey Starikovskiy, Fiodor Suietov, Bob Moore)
5248 Obsolete ACPICA interfaces:
5250 - AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel
5253 - AcpiLoadTable: Not needed.
5254 - AcpiUnloadTable: Not needed.
5256 New ACPICA interfaces:
5258 - AcpiInitializeTables: Must be called before the table manager can be
5260 - AcpiReallocateRootTable: Used to transfer the root table to dynamically
5261 allocated memory after it becomes available.
5262 - AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI tables
5265 Other ACPICA changes:
5267 - AcpiGetTableHeader returns the actual mapped table header, not a copy.
5269 AcpiOsUnmapMemory to free this mapping.
5270 - AcpiGetTable returns the actual mapped table. The mapping is managed
5271 internally and must not be deleted by the caller. Use of this interface
5272 causes no additional dynamic memory allocation.
5273 - AcpiFindRootPointer: Support for physical addressing has been
5275 it appeared to be unused.
5276 - The interface to AcpiOsMapMemory has changed to be consistent with the
5277 other allocation interfaces.
5278 - The interface to AcpiOsGetRootPointer has changed to eliminate
5281 - ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 64-
5282 bit platforms. Was previously 64 bits on all platforms.
5283 - The interface to the ACPI Global Lock acquire/release macros have
5285 slightly since ACPICA no longer keeps a local copy of the FACS with a
5286 constructed pointer to the actual global lock.
5288 Porting to the new table manager:
5290 - AcpiInitializeTables: Must be called once, and can be called anytime
5291 during the OS initialization process. It allows the host to specify an
5293 of memory to be used to store the internal version of the RSDT/XSDT (root
5294 table). This allows the host to access ACPI tables before memory
5296 is initialized and running.
5297 - AcpiReallocateRootTable: Can be called after memory management is
5299 to copy the root table to a dynamically allocated array, freeing up the
5300 scratch memory specified in the call to AcpiInitializeTables.
5301 - AcpiSubsystemInitialize: This existing interface is independent of the
5302 Table Manager, and does not have to be called before the Table Manager can
5303 be used, it only must be called before the rest of ACPICA can be used.
5304 - ACPI Tables: Some changes have been made to the names and structure of
5306 actbl.h and actbl1.h header files and may require changes to existing
5308 For example, bitfields have been completely removed because of their lack
5310 portability across C compilers.
5311 - Update interfaces to the Global Lock acquire/release macros if local
5312 versions are used. (see acwin.h)
5314 Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c
5318 Example Code and Data Size: These are the sizes for the OS-independent
5319 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5320 debug version of the code includes the debug output trace mechanism and
5322 a much larger code and data size.
5325 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
5326 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
5328 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
5329 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
5332 2) iASL Compiler/Disassembler and Tools:
5334 No changes for this release.
5336 ----------------------------------------
5337 21 July 2006. Summary of changes for version 20060721:
5339 1) ACPI CA Core Subsystem:
5341 The full source code for the ASL test suite used to validate the iASL
5342 compiler and the ACPICA core subsystem is being released with the ACPICA
5343 source for the first time. The source is contained in a separate package
5345 consists of over 1100 files that exercise all ASL/AML operators. The
5347 should appear on the Intel/ACPI web site shortly. (Valery Podrezov, Fiodor
5350 Completed a new design and implementation for support of the ACPI Global
5351 Lock. On the OS side, the global lock is now treated as a standard AML
5352 mutex. Previously, multiple OS threads could "acquire" the global lock
5353 simultaneously. However, this could cause the BIOS to be starved out of
5355 lock - especially in cases such as the Embedded Controller driver where
5356 there is a tight coupling between the OS and the BIOS.
5358 Implemented an optimization for the ACPI Global Lock interrupt mechanism.
5359 The Global Lock interrupt handler no longer queues the execution of a
5360 separate thread to signal the global lock semaphore. Instead, the
5362 is signaled directly from the interrupt handler.
5364 Implemented support within the AML interpreter for package objects that
5365 contain a larger AML length (package list length) than the package element
5366 count. In this case, the length of the package is truncated to match the
5367 package element count. Some BIOS code apparently modifies the package
5369 on the fly, and this change supports this behavior. Provides compatibility
5370 with the MS AML interpreter. (With assistance from Fiodor Suietov)
5372 Implemented a temporary fix for the BankValue parameter of a Bank Field to
5373 support all constant values, now including the Zero and One opcodes.
5374 Evaluation of this parameter must eventually be converted to a full
5376 evaluation. A not-implemented error is now returned (temporarily) for non-
5377 constant values for this parameter.
5379 Fixed problem reports (Fiodor Suietov) integrated:
5380 - Fix for premature object deletion after CopyObject on Operation Region
5384 Example Code and Data Size: These are the sizes for the OS-independent
5385 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5386 debug version of the code includes the debug output trace mechanism and
5388 a much larger code and data size.
5391 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total
5392 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total
5394 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
5395 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
5398 2) iASL Compiler/Disassembler and Tools:
5400 No changes for this release.
5402 ----------------------------------------
5403 07 July 2006. Summary of changes for version 20060707:
5405 1) ACPI CA Core Subsystem:
5407 Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers
5408 that do not allow the initialization of address pointers within packed
5409 structures - even though the hardware itself may support misaligned
5410 transfers. Some of the debug data structures are packed by default to
5413 Added an error message for the case where AcpiOsGetThreadId() returns
5415 A non-zero value is required by the core ACPICA code to ensure the proper
5416 operation of AML mutexes and recursive control methods.
5418 The DSDT is now the only ACPI table that determines whether the AML
5419 interpreter is in 32-bit or 64-bit mode. Not really a functional change,
5421 the hooks for per-table 32/64 switching have been removed from the code. A
5422 clarification to the ACPI specification is forthcoming in ACPI 3.0B.
5424 Fixed a possible leak of an OwnerID in the error path of
5425 AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID
5426 deletion to a single place in AcpiTbUninstallTable to correct possible
5428 when using the AcpiTbDeleteTablesByType interface (with assistance from
5431 Fixed a problem with Serialized control methods where the semaphore
5432 associated with the method could be over-signaled after multiple method
5435 Fixed two issues with the locking of the internal namespace data
5437 Both the Unload() operator and AcpiUnloadTable interface now lock the
5438 namespace during the namespace deletion associated with the table unload
5439 (with assistance from Linn Crosetto.)
5441 Fixed problem reports (Valery Podrezov) integrated:
5442 - Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426)
5444 Fixed problem reports (Fiodor Suietov) integrated:
5445 - Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369)
5446 - On Address Space handler deletion, needless deactivation call (BZ 374)
5447 - AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 375)
5448 - Possible memory leak, Notify sub-objects of Processor, Power,
5451 - AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378)
5452 - Minimum Length of RSDT should be validated (BZ 379)
5453 - AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no
5455 - AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type
5459 Example Code and Data Size: These are the sizes for the OS-independent
5460 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5461 debug version of the code includes the debug output trace mechanism and
5463 a much larger code and data size.
5466 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
5467 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
5469 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
5470 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
5473 2) iASL Compiler/Disassembler and Tools:
5475 Fixed problem reports:
5476 Compiler segfault when ASL contains a long (>1024) String declaration (BZ
5479 ----------------------------------------
5480 23 June 2006. Summary of changes for version 20060623:
5482 1) ACPI CA Core Subsystem:
5484 Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This
5485 allows the type to be customized to the host OS for improved efficiency
5486 (since a spinlock is usually a very small object.)
5488 Implemented support for "ignored" bits in the ACPI registers. According to
5489 the ACPI specification, these bits should be preserved when writing the
5490 registers via a read/modify/write cycle. There are 3 bits preserved in
5492 manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11].
5494 Implemented the initial deployment of new OSL mutex interfaces. Since some
5495 host operating systems have separate mutex and semaphore objects, this
5496 feature was requested. The base code now uses mutexes (and the new mutex
5497 interfaces) wherever a binary semaphore was used previously. However, for
5498 the current release, the mutex interfaces are defined as macros to map
5500 to the existing semaphore interfaces. Therefore, no OSL changes are
5502 at this time. (See acpiosxf.h)
5504 Fixed several problems with the support for the control method SyncLevel
5505 parameter. The SyncLevel now works according to the ACPI specification and
5506 in concert with the Mutex SyncLevel parameter, since the current SyncLevel
5507 is a property of the executing thread. Mutual exclusion for control
5509 is now implemented with a mutex instead of a semaphore.
5511 Fixed three instances of the use of the C shift operator in the bitfield
5512 support code (exfldio.c) to avoid the use of a shift value larger than the
5513 target data width. The behavior of C compilers is undefined in this case
5515 can cause unpredictable results, and therefore the case must be detected
5517 avoided. (Fiodor Suietov)
5519 Added an info message whenever an SSDT or OEM table is loaded dynamically
5520 via the Load() or LoadTable() ASL operators. This should improve debugging
5521 capability since it will show exactly what tables have been loaded (beyond
5522 the tables present in the RSDT/XSDT.)
5524 Example Code and Data Size: These are the sizes for the OS-independent
5525 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5526 debug version of the code includes the debug output trace mechanism and
5528 a much larger code and data size.
5531 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
5532 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
5534 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
5535 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
5538 2) iASL Compiler/Disassembler and Tools:
5540 No changes for this release.
5542 ----------------------------------------
5543 08 June 2006. Summary of changes for version 20060608:
5545 1) ACPI CA Core Subsystem:
5547 Converted the locking mutex used for the ACPI hardware to a spinlock. This
5548 change should eliminate all problems caused by attempting to acquire a
5549 semaphore at interrupt level, and it means that all ACPICA external
5550 interfaces that directly access the ACPI hardware can be safely called
5552 interrupt level. OSL code that implements the semaphore interfaces should
5554 able to eliminate any workarounds for being called at interrupt level.
5556 Fixed a regression introduced in 20060526 where the ACPI device
5557 initialization could be prematurely aborted with an AE_NOT_FOUND if a
5559 did not have an optional _INI method.
5561 Fixed an IndexField issue where a write to the Data Register should be
5562 limited in size to the AccessSize (width) of the IndexField itself. (BZ
5566 Fixed problem reports (Valery Podrezov) integrated:
5567 - Allow store of ThermalZone objects to Debug object (BZ 5369/5370)
5569 Fixed problem reports (Fiodor Suietov) integrated:
5570 - AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364)
5572 Removed four global mutexes that were obsolete and were no longer being
5575 Example Code and Data Size: These are the sizes for the OS-independent
5576 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5577 debug version of the code includes the debug output trace mechanism and
5579 a much larger code and data size.
5582 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
5583 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
5585 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
5586 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
5589 2) iASL Compiler/Disassembler and Tools:
5591 Fixed a fault when using -g option (get tables from registry) on Windows
5594 Fixed problem reports integrated:
5595 - Generate error if CreateField NumBits parameter is zero. (BZ 405)
5596 - Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor
5598 - Global table revision override (-r) is ignored (BZ 413)
5600 ----------------------------------------
5601 26 May 2006. Summary of changes for version 20060526:
5603 1) ACPI CA Core Subsystem:
5605 Restructured, flattened, and simplified the internal interfaces for
5606 namespace object evaluation - resulting in smaller code, less CPU stack
5608 and fewer interfaces. (With assistance from Mikhail Kouzmich)
5610 Fixed a problem with the CopyObject operator where the first parameter was
5611 not typed correctly for the parser, interpreter, compiler, and
5613 Caused various errors and unexpected behavior.
5615 Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits
5616 produced incorrect results with some C compilers. Since the behavior of C
5617 compilers when the shift value is larger than the datatype width is
5618 apparently not well defined, the interpreter now detects this condition
5620 simply returns zero as expected in all such cases. (BZ 395)
5622 Fixed problem reports (Valery Podrezov) integrated:
5623 - Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329)
5624 - Allow interpreter to handle nested method declarations (BZ 5361)
5626 Fixed problem reports (Fiodor Suietov) integrated:
5627 - AcpiTerminate doesn't free debug memory allocation list objects (BZ 355)
5628 - After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ
5630 - AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357)
5631 - Resource Manager should return AE_TYPE for non-device objects (BZ 358)
5632 - Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359)
5633 - Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360)
5634 - Incomplete cleanup branch in AcpiPsParseAml (BZ 361)
5635 - Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362)
5636 - AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ
5638 - Status of the Global Initialization Handler call not used (BZ 366)
5639 - Incorrect object parameter to Global Initialization Handler (BZ 367)
5641 Example Code and Data Size: These are the sizes for the OS-independent
5642 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5643 debug version of the code includes the debug output trace mechanism and
5645 a much larger code and data size.
5648 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
5649 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
5651 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
5652 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
5655 2) iASL Compiler/Disassembler and Tools:
5657 Modified the parser to allow the names IO, DMA, and IRQ to be used as
5658 namespace identifiers with no collision with existing resource descriptor
5659 macro names. This provides compatibility with other ASL compilers and is
5660 most useful for disassembly/recompilation of existing tables without parse
5661 errors. (With assistance from Thomas Renninger)
5663 Disassembler: fixed an incorrect disassembly problem with the
5664 DataTableRegion and CopyObject operators. Fixed a possible fault during
5665 disassembly of some Alias operators.
5667 ----------------------------------------
5668 12 May 2006. Summary of changes for version 20060512:
5670 1) ACPI CA Core Subsystem:
5672 Replaced the AcpiOsQueueForExecution interface with a new interface named
5673 AcpiOsExecute. The major difference is that the new interface does not
5675 a Priority parameter, this appeared to be useless and has been replaced by
5677 Type parameter. The Type tells the host what type of execution is being
5678 requested, such as global lock handler, notify handler, GPE handler, etc.
5679 This allows the host to queue and execute the request as appropriate for
5681 request type, possibly using different work queues and different
5683 for the various request types. This enables fixes for multithreading
5684 deadlock problems such as BZ #5534, and will require changes to all
5686 OS interface layers. (Alexey Starikovskiy and Bob Moore)
5688 Fixed a possible memory leak associated with the support for the so-called
5689 "implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor
5692 Fixed a problem with the Load() operator where a table load from an
5693 operation region could overwrite an internal table buffer by up to 7 bytes
5694 and cause alignment faults on IPF systems. (With assistance from Luming
5697 Example Code and Data Size: These are the sizes for the OS-independent
5698 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5699 debug version of the code includes the debug output trace mechanism and
5701 a much larger code and data size.
5704 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
5705 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
5707 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
5708 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
5712 2) iASL Compiler/Disassembler and Tools:
5714 Disassembler: Implemented support to cross reference the internal
5716 and automatically generate ASL External() statements for symbols not
5718 within the current table being disassembled. This will simplify the
5719 disassembly and recompilation of interdependent tables such as SSDTs since
5720 these statements will no longer have to be added manually.
5722 Disassembler: Implemented experimental support to automatically detect
5723 invocations of external control methods and generate appropriate
5725 statements. This is problematic because the AML cannot be correctly parsed
5726 until the number of arguments for each control method is known. Currently,
5727 standalone method invocations and invocations as the source operand of a
5728 Store() statement are supported.
5730 Disassembler: Implemented support for the ASL pseudo-operators LNotEqual,
5731 LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()),
5732 LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code
5733 more readable and likely closer to the original ASL source.
5735 ----------------------------------------
5736 21 April 2006. Summary of changes for version 20060421:
5738 1) ACPI CA Core Subsystem:
5740 Removed a device initialization optimization introduced in 20051216 where
5741 the _STA method was not run unless an _INI was also present for the same
5742 device. This optimization could cause problems because it could allow _INI
5743 methods to be run within a not-present device subtree. (If a not-present
5744 device had no _INI, _STA would not be run, the not-present status would
5746 be discovered, and the children of the device would be incorrectly
5749 Implemented a new _STA optimization where namespace subtrees that do not
5750 contain _INI are identified and ignored during device initialization.
5751 Selectively running _STA can significantly improve boot time on large
5752 machines (with assistance from Len Brown.)
5754 Implemented support for the device initialization case where the returned
5755 _STA flags indicate a device not-present but functioning. In this case,
5757 is not run, but the device children are examined for presence, as per the
5760 Implemented an additional change to the IndexField support in order to
5761 conform to MS behavior. The value written to the Index Register is not
5762 simply a byte offset, it is a byte offset in units of the access width of
5763 the parent Index Field. (Fiodor Suietov)
5765 Defined and deployed a new OSL interface, AcpiOsValidateAddress. This
5766 interface is called during the creation of all AML operation regions, and
5767 allows the host OS to exert control over what addresses it will allow the
5768 AML code to access. Operation Regions whose addresses are disallowed will
5769 cause a runtime exception when they are actually accessed (will not affect
5770 or abort table loading.) See oswinxf or osunixxf for an example
5773 Defined and deployed a new OSL interface, AcpiOsValidateInterface. This
5774 interface allows the host OS to match the various "optional"
5775 interface/behavior strings for the _OSI predefined control method as
5776 appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf
5777 for an example implementation.
5779 Restructured and corrected various problems in the exception handling code
5780 paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod
5781 (with assistance from Takayoshi Kochi.)
5783 Modified the Linux source converter to ignore quoted string literals while
5784 converting identifiers from mixed to lower case. This will correct
5786 with the disassembler and other areas where such strings must not be
5789 The ACPI_FUNCTION_* macros no longer require quotes around the function
5790 name. This allows the Linux source converter to convert the names, now
5792 the converter ignores quoted strings.
5794 Example Code and Data Size: These are the sizes for the OS-independent
5795 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5796 debug version of the code includes the debug output trace mechanism and
5798 a much larger code and data size.
5802 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
5803 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
5805 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
5806 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
5809 2) iASL Compiler/Disassembler and Tools:
5811 Implemented 3 new warnings for iASL, and implemented multiple warning
5815 1) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is
5817 WAIT_FOREVER (0xFFFF) and the code does not examine the return value to
5818 check for the possible timeout, a warning is issued.
5820 2) Useless operators: If an ASL operator does not specify an optional
5822 operand and it also does not use the function return value from the
5823 operator, a warning is issued since the operator effectively does nothing.
5825 3) Unreferenced objects: If a namespace object is created, but never
5826 referenced, a warning is issued. This is a warning level 2 since there are
5827 cases where this is ok, such as when a secondary table is loaded that uses
5828 the unreferenced objects. Even so, care is taken to only flag objects that
5829 don't look like they will ever be used. For example, the reserved methods
5830 (starting with an underscore) are usually not referenced because it is
5831 expected that the OS will invoke them.
5833 ----------------------------------------
5834 31 March 2006. Summary of changes for version 20060331:
5836 1) ACPI CA Core Subsystem:
5838 Implemented header file support for the following additional ACPI tables:
5839 ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this
5841 all current and known ACPI tables are now defined in the ACPICA headers
5843 are available for use by device drivers and other software.
5845 Implemented support to allow tables that contain ACPI names with invalid
5846 characters to be loaded. Previously, this would cause the table load to
5847 fail, but since there are several known cases of such tables on existing
5848 machines, this change was made to enable ACPI support for them. Also, this
5849 matches the behavior of the Microsoft ACPI implementation.
5851 Fixed a couple regressions introduced during the memory optimization in
5853 20060317 release. The namespace node definition required additional
5854 reorganization and an internal datatype that had been changed to 8-bit was
5855 restored to 32-bit. (Valery Podrezov)
5857 Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState
5858 could be passed through to AcpiOsReleaseObject which is unexpected. Such
5859 null pointers are now trapped and ignored, matching the behavior of the
5860 previous implementation before the deployment of AcpiOsReleaseObject.
5861 (Valery Podrezov, Fiodor Suietov)
5863 Fixed a memory mapping leak during the deletion of a SystemMemory
5865 region where a cached memory mapping was not deleted. This became a
5866 noticeable problem for operation regions that are defined within
5868 used control methods. (Dana Meyers)
5870 Reorganized the ACPI table header files into two main files: one for the
5871 ACPI tables consumed by the ACPICA core, and another for the miscellaneous
5872 ACPI tables that are consumed by the drivers and other software. The
5874 FADT definitions were merged into one common section and three different
5875 tables (ACPI 1.0, 1.0+, and 2.0)
5877 Example Code and Data Size: These are the sizes for the OS-independent
5878 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5879 debug version of the code includes the debug output trace mechanism and
5881 a much larger code and data size.
5884 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
5885 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
5887 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
5888 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
5891 2) iASL Compiler/Disassembler and Tools:
5893 Disassembler: Implemented support to decode and format all non-AML ACPI
5894 tables (tables other than DSDTs and SSDTs.) This includes the new tables
5895 added to the ACPICA headers, therefore all current and known ACPI tables
5899 Disassembler: The change to allow ACPI names with invalid characters also
5900 enables the disassembly of such tables. Invalid characters within names
5902 changed to '*' to make the name printable; the iASL compiler will still
5903 generate an error for such names, however, since this is an invalid ACPI
5906 Implemented an option for AcpiXtract (-a) to extract all tables found in
5908 input file. The default invocation extracts only the DSDTs and SSDTs.
5910 Fixed a couple of gcc generation issues for iASL and AcpiExec and added a
5911 makefile for the AcpiXtract utility.
5913 ----------------------------------------
5914 17 March 2006. Summary of changes for version 20060317:
5916 1) ACPI CA Core Subsystem:
5918 Implemented the use of a cache object for all internal namespace nodes.
5919 Since there are about 1000 static nodes in a typical system, this will
5920 decrease memory use for cache implementations that minimize per-allocation
5921 overhead (such as a slab allocator.)
5923 Removed the reference count mechanism for internal namespace nodes, since
5925 was deemed unnecessary. This reduces the size of each namespace node by
5926 about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit case,
5927 and 32 bytes for the 64-bit case.
5929 Optimized several internal data structures to reduce object size on 64-bit
5930 platforms by packing data within the 64-bit alignment. This includes the
5931 frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static
5932 instances corresponding to the namespace objects.
5934 Added two new strings for the predefined _OSI method: "Windows 2001.1 SP1"
5937 Split the allocation tracking mechanism out to a separate file, from
5938 utalloc.c to uttrack.c. This mechanism appears to be only useful for
5939 application-level code. Kernels may wish to not include uttrack.c in
5942 Removed all remnants of the obsolete ACPI_REPORT_* macros and the
5944 code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING
5947 Code and Data Size: These are the sizes for the acpica.lib produced by the
5948 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
5950 driver or OSPM code. The debug version of the code includes the debug
5952 trace mechanism and has a much larger code and data size. Note that these
5953 values will vary depending on the efficiency of the compiler and the
5954 compiler options used during generation.
5957 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
5958 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
5960 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
5961 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
5964 2) iASL Compiler/Disassembler and Tools:
5966 Implemented an ANSI C version of the acpixtract utility. This version will
5967 automatically extract the DSDT and all SSDTs from the input acpidump text
5968 file and dump the binary output to separate files. It can also display a
5969 summary of the input file including the headers for each table found and
5970 will extract any single ACPI table, with any signature. (See
5971 source/tools/acpixtract)
5973 ----------------------------------------
5974 10 March 2006. Summary of changes for version 20060310:
5976 1) ACPI CA Core Subsystem:
5978 Tagged all external interfaces to the subsystem with the new
5979 ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to assist
5980 kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL
5981 macro. The default definition is NULL.
5983 Added the ACPI_THREAD_ID type for the return value from AcpiOsGetThreadId.
5984 This allows the host to define this as necessary to simplify kernel
5985 integration. The default definition is ACPI_NATIVE_UINT.
5987 Fixed two interpreter problems related to error processing, the deletion
5989 objects, and placing invalid pointers onto the internal operator result
5990 stack. BZ 6028, 6151 (Valery Podrezov)
5992 Increased the reference count threshold where a warning is emitted for
5994 reference counts in order to eliminate unnecessary warnings on systems
5996 large namespaces (especially 64-bit.) Increased the value from 0x400 to
5999 Due to universal disagreement as to the meaning of the 'c' in the calloc()
6000 function, the ACPI_MEM_CALLOCATE macro has been renamed to
6001 ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'.
6002 ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and
6005 Code and Data Size: These are the sizes for the acpica.lib produced by the
6006 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
6008 driver or OSPM code. The debug version of the code includes the debug
6010 trace mechanism and has a much larger code and data size. Note that these
6011 values will vary depending on the efficiency of the compiler and the
6012 compiler options used during generation.
6015 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
6016 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
6018 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
6019 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
6022 2) iASL Compiler/Disassembler:
6024 Disassembler: implemented support for symbolic resource descriptor
6025 references. If a CreateXxxxField operator references a fixed offset within
6027 resource descriptor, a name is assigned to the descriptor and the offset
6029 translated to the appropriate resource tag and pathname. The addition of
6030 this support brings the disassembled code very close to the original ASL
6031 source code and helps eliminate run-time errors when the disassembled code
6032 is modified (and recompiled) in such a way as to invalidate the original
6035 Implemented support for a Descriptor Name as the last parameter to the ASL
6036 Register() macro. This parameter was inadvertently left out of the ACPI
6037 specification, and will be added for ACPI 3.0b.
6039 Fixed a problem where the use of the "_OSI" string (versus the full path
6040 "\_OSI") caused an internal compiler error. ("No back ptr to op")
6042 Fixed a problem with the error message that occurs when an invalid string
6044 used for a _HID object (such as one with an embedded asterisk:
6046 The correct message is now displayed.
6048 ----------------------------------------
6049 17 February 2006. Summary of changes for version 20060217:
6051 1) ACPI CA Core Subsystem:
6053 Implemented a change to the IndexField support to match the behavior of
6055 Microsoft AML interpreter. The value written to the Index register is now
6057 byte offset, no longer an index based upon the width of the Data register.
6058 This should fix IndexField problems seen on some machines where the Data
6059 register is not exactly one byte wide. The ACPI specification will be
6060 clarified on this point.
6062 Fixed a problem where several resource descriptor types could overrun the
6063 internal descriptor buffer due to size miscalculation: VendorShort,
6064 VendorLong, and Interrupt. This was noticed on IA64 machines, but could
6065 affect all platforms.
6067 Fixed a problem where individual resource descriptors were misaligned
6069 the internal buffer, causing alignment faults on IA64 platforms.
6071 Code and Data Size: These are the sizes for the acpica.lib produced by the
6072 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
6074 driver or OSPM code. The debug version of the code includes the debug
6076 trace mechanism and has a much larger code and data size. Note that these
6077 values will vary depending on the efficiency of the compiler and the
6078 compiler options used during generation.
6081 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
6082 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
6084 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
6085 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
6088 2) iASL Compiler/Disassembler:
6090 Implemented support for new reserved names: _WDG and _WED are Microsoft
6091 extensions for Windows Instrumentation Management, _TDL is a new ACPI-
6092 defined method (Throttling Depth Limit.)
6094 Fixed a problem where a zero-length VendorShort or VendorLong resource
6095 descriptor was incorrectly emitted as a descriptor of length one.
6097 ----------------------------------------
6098 10 February 2006. Summary of changes for version 20060210:
6100 1) ACPI CA Core Subsystem:
6102 Removed a couple of extraneous ACPI_ERROR messages that appeared during
6103 normal execution. These became apparent after the conversion from
6106 Fixed a problem where the CreateField operator could hang if the BitIndex
6108 NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359)
6110 Fixed a problem where a DeRefOf operation on a buffer object incorrectly
6111 failed with an exception. This also fixes a couple of related RefOf and
6112 DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387)
6114 Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead
6116 AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov,
6120 Implemented a memory cleanup at the end of the execution of each iteration
6121 of an AML While() loop, preventing the accumulation of outstanding
6123 (Valery Podrezov, BZ 5427)
6125 Eliminated a chunk of duplicate code in the object resolution code.
6129 Fixed several warnings during the 64-bit code generation.
6131 The AcpiSrc source code conversion tool now inserts one line of whitespace
6132 after an if() statement that is followed immediately by a comment,
6134 readability of the Linux code.
6136 Code and Data Size: The current and previous library sizes for the core
6137 subsystem are shown below. These are the code and data sizes for the
6138 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
6139 values do not include any ACPI driver or OSPM code. The debug version of
6141 code includes the debug output trace mechanism and has a much larger code
6142 and data size. Note that these values will vary depending on the
6144 of the compiler and the compiler options used during generation.
6147 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
6148 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
6150 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
6151 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
6154 2) iASL Compiler/Disassembler:
6156 Fixed a problem with the disassembly of a BankField operator with a
6158 expression for the BankValue parameter.
6160 ----------------------------------------
6161 27 January 2006. Summary of changes for version 20060127:
6163 1) ACPI CA Core Subsystem:
6165 Implemented support in the Resource Manager to allow unresolved namestring
6166 references within resource package objects for the _PRT method. This
6168 is in addition to the previously implemented unresolved reference support
6169 within the AML parser. If the interpreter slack mode is enabled, these
6170 unresolved references will be passed through to the caller as a NULL
6174 Implemented and deployed new macros and functions for error and warning
6175 messages across the subsystem. These macros are simpler and generate less
6176 code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION,
6177 ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older
6178 macros remain defined to allow ACPI drivers time to migrate to the new
6181 Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of the
6182 Acquire/Release Lock OSL interfaces.
6184 Fixed a problem where Alias ASL operators are sometimes not correctly
6185 resolved, in both the interpreter and the iASL compiler.
6187 Fixed several problems with the implementation of the
6188 ConcatenateResTemplate
6189 ASL operator. As per the ACPI specification, zero length buffers are now
6190 treated as a single EndTag. One-length buffers always cause a fatal
6191 exception. Non-zero length buffers that do not end with a full 2-byte
6193 cause a fatal exception.
6195 Fixed a possible structure overwrite in the AcpiGetObjectInfo external
6196 interface. (With assistance from Thomas Renninger)
6198 Code and Data Size: The current and previous library sizes for the core
6199 subsystem are shown below. These are the code and data sizes for the
6200 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
6201 values do not include any ACPI driver or OSPM code. The debug version of
6203 code includes the debug output trace mechanism and has a much larger code
6204 and data size. Note that these values will vary depending on the
6206 of the compiler and the compiler options used during generation.
6209 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
6210 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
6212 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
6213 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
6216 2) iASL Compiler/Disassembler:
6218 Fixed an internal error that was generated for any forward references to
6222 ----------------------------------------
6223 13 January 2006. Summary of changes for version 20060113:
6225 1) ACPI CA Core Subsystem:
6227 Added 2006 copyright to all module headers and signons. This affects
6228 virtually every file in the ACPICA core subsystem, iASL compiler, and the
6231 Enhanced the ACPICA error reporting in order to simplify user migration to
6232 the non-debug version of ACPICA. Replaced all instances of the
6233 ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN debug
6234 levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros,
6235 respectively. This preserves all error and warning messages in the non-
6237 version of the ACPICA code (this has been referred to as the "debug lite"
6238 option.) Over 200 cases were converted to create a total of over 380
6239 error/warning messages across the ACPICA code. This increases the code and
6240 data size of the default non-debug version of the code somewhat (about
6242 but all error/warning reporting may be disabled if desired (and code
6243 eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time
6244 configuration option. The size of the debug version of ACPICA remains
6248 Fixed a memory leak within the AML Debugger "Set" command. One object was
6249 not properly deleted for every successful invocation of the command.
6251 Code and Data Size: The current and previous library sizes for the core
6252 subsystem are shown below. These are the code and data sizes for the
6253 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
6254 values do not include any ACPI driver or OSPM code. The debug version of
6256 code includes the debug output trace mechanism and has a much larger code
6257 and data size. Note that these values will vary depending on the
6259 of the compiler and the compiler options used during generation.
6262 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
6263 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
6265 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
6266 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
6269 2) iASL Compiler/Disassembler:
6271 The compiler now officially supports the ACPI 3.0a specification that was
6272 released on December 30, 2005. (Specification is available at
6275 ----------------------------------------
6276 16 December 2005. Summary of changes for version 20051216:
6278 1) ACPI CA Core Subsystem:
6280 Implemented optional support to allow unresolved names within ASL Package
6281 objects. A null object is inserted in the package when a named reference
6282 cannot be located in the current namespace. Enabled via the interpreter
6283 slack flag, this should eliminate AE_NOT_FOUND exceptions seen on machines
6284 that contain such code.
6286 Implemented an optimization to the initialization sequence that can
6288 boot time. During ACPI device initialization, the _STA method is now run
6290 and only if the _INI method exists. The _STA method is used to determine
6292 the device is present; An _INI can only be run if _STA returns present,
6294 it is a waste of time to run the _STA method if the _INI does not exist.
6295 (Prototype and assistance from Dong Wei)
6297 Implemented use of the C99 uintptr_t for the pointer casting macros if it
6299 available in the current compiler. Otherwise, the default (void *) cast is
6302 Fixed some possible memory leaks found within the execution path of the
6303 Break, Continue, If, and CreateField operators. (Valery Podrezov)
6305 Fixed a problem introduced in the 20051202 release where an exception is
6306 generated during method execution if a control method attempts to declare
6309 Moved resource descriptor string constants that are used by both the AML
6310 disassembler and AML debugger to the common utilities directory so that
6311 these components are independent.
6313 Implemented support in the AcpiExec utility (-e switch) to globally ignore
6314 exceptions during control method execution (method is not aborted.)
6316 Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix
6319 Code and Data Size: The current and previous library sizes for the core
6320 subsystem are shown below. These are the code and data sizes for the
6321 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
6322 values do not include any ACPI driver or OSPM code. The debug version of
6324 code includes the debug output trace mechanism and has a much larger code
6325 and data size. Note that these values will vary depending on the
6327 of the compiler and the compiler options used during generation.
6330 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
6331 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
6333 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
6334 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
6337 2) iASL Compiler/Disassembler:
6339 Fixed a problem where a CPU stack overflow fault could occur if a
6341 method call was made from within a Return statement.
6343 ----------------------------------------
6344 02 December 2005. Summary of changes for version 20051202:
6346 1) ACPI CA Core Subsystem:
6348 Modified the parsing of control methods to no longer create namespace
6349 objects during the first pass of the parse. Objects are now created only
6350 during the execute phase, at the moment the namespace creation operator is
6351 encountered in the AML (Name, OperationRegion, CreateByteField, etc.) This
6352 should eliminate ALREADY_EXISTS exceptions seen on some machines where
6353 reentrant control methods are protected by an AML mutex. The mutex will
6355 correctly block multiple threads from attempting to create the same object
6358 Increased the number of available Owner Ids for namespace object tracking
6359 from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen
6361 some machines with a large number of ACPI tables (either static or
6364 Fixed a problem with the AcpiExec utility where a fault could occur when
6366 -b switch (batch mode) is used.
6368 Enhanced the namespace dump routine to output the owner ID for each
6371 Code and Data Size: The current and previous library sizes for the core
6372 subsystem are shown below. These are the code and data sizes for the
6373 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
6374 values do not include any ACPI driver or OSPM code. The debug version of
6376 code includes the debug output trace mechanism and has a much larger code
6377 and data size. Note that these values will vary depending on the
6379 of the compiler and the compiler options used during generation.
6382 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
6383 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
6385 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
6386 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
6389 2) iASL Compiler/Disassembler:
6391 Fixed a parse error during compilation of certain Switch/Case constructs.
6393 simplify the parse, the grammar now allows for multiple Default statements
6394 and this error is now detected and flagged during the analysis phase.
6396 Disassembler: The disassembly now includes the contents of the original
6397 table header within a comment at the start of the file. This includes the
6398 name and version of the original ASL compiler.
6400 ----------------------------------------
6401 17 November 2005. Summary of changes for version 20051117:
6403 1) ACPI CA Core Subsystem:
6405 Fixed a problem in the AML parser where the method thread count could be
6406 decremented below zero if any errors occurred during the method parse
6408 This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some
6410 This also fixed a related regression with the mechanism that detects and
6411 corrects methods that cannot properly handle reentrancy (related to the
6412 deployment of the new OwnerId mechanism.)
6414 Eliminated the pre-parsing of control methods (to detect errors) during
6415 table load. Related to the problem above, this was causing unwind issues
6417 any errors occurred during the parse, and it seemed to be overkill. A
6419 load should not be aborted if there are problems with any single control
6420 method, thus rendering this feature rather pointless.
6422 Fixed a problem with the new table-driven resource manager where an
6424 buffer overflow could occur for small resource templates.
6426 Implemented a new external interface, AcpiGetVendorResource. This
6428 will find and return a vendor-defined resource descriptor within a _CRS or
6429 _PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn
6432 Removed the length limit (200) on string objects as per the upcoming ACPI
6433 3.0A specification. This affects the following areas of the interpreter:
6435 any implicit conversion of a Buffer to a String, 2) a String object result
6436 of the ASL Concatentate operator, 3) the String object result of the ASL
6439 Fixed a problem in the Windows OS interface layer (OSL) where a
6441 on a semaphore object would incorrectly timeout. This allows the
6442 multithreading features of the AcpiExec utility to work properly under
6445 Updated the Linux makefiles for the iASL compiler and AcpiExec to include
6446 the recently added file named "utresrc.c".
6448 Code and Data Size: The current and previous library sizes for the core
6449 subsystem are shown below. These are the code and data sizes for the
6450 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
6451 values do not include any ACPI driver or OSPM code. The debug version of
6453 code includes the debug output trace mechanism and has a much larger code
6454 and data size. Note that these values will vary depending on the
6456 of the compiler and the compiler options used during generation.
6459 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
6460 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
6462 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
6463 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
6466 2) iASL Compiler/Disassembler:
6468 Removed the limit (200) on string objects as per the upcoming ACPI 3.0A
6469 specification. For the iASL compiler, this means that string literals
6471 the source ASL can be of any length.
6473 Enhanced the listing output to dump the AML code for resource descriptors
6474 immediately after the ASL code for each descriptor, instead of in a block
6476 the end of the entire resource template.
6478 Enhanced the compiler debug output to dump the entire original parse tree
6479 constructed during the parse phase, before any transforms are applied to
6481 tree. The transformed tree is dumped also.
6483 ----------------------------------------
6484 02 November 2005. Summary of changes for version 20051102:
6486 1) ACPI CA Core Subsystem:
6488 Modified the subsystem initialization sequence to improve GPE support. The
6489 GPE initialization has been split into two parts in order to defer
6491 of the _PRW methods (Power Resources for Wake) until after the hardware is
6492 fully initialized and the SCI handler is installed. This allows the _PRW
6493 methods to access fields protected by the Global Lock. This will fix
6495 where a NO_GLOBAL_LOCK exception has been seen during initialization.
6497 Converted the ACPI internal object disassemble and display code within the
6498 AML debugger to fully table-driven operation, reducing code size and
6499 increasing maintainability.
6501 Fixed a regression with the ConcatenateResTemplate() ASL operator
6503 in the 20051021 release.
6505 Implemented support for "local" internal ACPI object types within the
6506 debugger "Object" command and the AcpiWalkNamespace external interfaces.
6507 These local types include RegionFields, BankFields, IndexFields, Alias,
6511 Moved common AML resource handling code into a new file, "utresrc.c". This
6512 code is shared by both the Resource Manager and the AML Debugger.
6514 Code and Data Size: The current and previous library sizes for the core
6515 subsystem are shown below. These are the code and data sizes for the
6516 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
6517 values do not include any ACPI driver or OSPM code. The debug version of
6519 code includes the debug output trace mechanism and has a much larger code
6520 and data size. Note that these values will vary depending on the
6522 of the compiler and the compiler options used during generation.
6525 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
6526 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
6528 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
6529 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
6532 2) iASL Compiler/Disassembler:
6534 Fixed a problem with very large initializer lists (more than 4000
6536 for both Buffer and Package objects where the parse stack could overflow.
6538 Enhanced the pre-compile source code scan for non-ASCII characters to
6540 characters within comment fields. The scan is now always performed and is
6542 longer optional, detecting invalid characters within a source file
6543 immediately rather than during the parse phase or later.
6545 Enhanced the ASL grammar definition to force early reductions on all list-
6546 style grammar elements so that the overall parse stack usage is greatly
6547 reduced. This should improve performance and reduce the possibility of
6551 Eliminated all reduce/reduce conflicts in the iASL parser generation.
6553 with the addition of a %expected statement, the compiler generates from
6554 source with no warnings.
6556 Fixed a possible segment fault in the disassembler if the input filename
6557 does not contain a "dot" extension (Thomas Renninger).
6559 ----------------------------------------
6560 21 October 2005. Summary of changes for version 20051021:
6562 1) ACPI CA Core Subsystem:
6564 Implemented support for the EM64T and other x86-64 processors. This
6565 essentially entails recognizing that these processors support non-aligned
6566 memory transfers. Previously, all 64-bit processors were assumed to lack
6567 hardware support for non-aligned transfers.
6569 Completed conversion of the Resource Manager to nearly full table-driven
6570 operation. Specifically, the resource conversion code (convert AML to
6571 internal format and the reverse) and the debug code to dump internal
6572 resource descriptors are fully table-driven, reducing code and data size
6574 improving maintainability.
6576 The OSL interfaces for Acquire and Release Lock now use a 64-bit flag word
6577 on 64-bit processors instead of a fixed 32-bit word. (With assistance from
6578 Alexey Starikovskiy)
6580 Implemented support within the resource conversion code for the Type-
6581 Specific byte within the various ACPI 3.0 *WordSpace macros.
6583 Fixed some issues within the resource conversion code for the type-
6585 flags for both Memory and I/O address resource descriptors. For Memory,
6586 implemented support for the MTP and TTP flags. For I/O, split the TRS and
6587 TTP flags into two separate fields.
6589 Code and Data Size: The current and previous library sizes for the core
6590 subsystem are shown below. These are the code and data sizes for the
6591 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
6592 values do not include any ACPI driver or OSPM code. The debug version of
6594 code includes the debug output trace mechanism and has a much larger code
6595 and data size. Note that these values will vary depending on the
6597 of the compiler and the compiler options used during generation.
6600 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
6601 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
6603 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
6604 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
6608 2) iASL Compiler/Disassembler:
6610 Relaxed a compiler restriction that disallowed a ResourceIndex byte if the
6611 corresponding ResourceSource string was not also present in a resource
6612 descriptor declaration. This restriction caused problems with existing
6613 AML/ASL code that includes the Index byte without the string. When such
6615 was disassembled, it could not be compiled without modification. Further,
6616 the modified code created a resource template with a different size than
6618 original, breaking code that used fixed offsets into the resource template
6621 Removed a recent feature of the disassembler to ignore a lone
6623 byte. This byte is now emitted if present so that the exact AML can be
6624 reproduced when the disassembled code is recompiled.
6626 Improved comments and text alignment for the resource descriptor code
6627 emitted by the disassembler.
6629 Implemented disassembler support for the ACPI 3.0 AccessSize field within
6631 Register() resource descriptor.
6633 ----------------------------------------
6634 30 September 2005. Summary of changes for version 20050930:
6636 1) ACPI CA Core Subsystem:
6638 Completed a major overhaul of the Resource Manager code - specifically,
6639 optimizations in the area of the AML/internal resource conversion code.
6641 code has been optimized to simplify and eliminate duplicated code, CPU
6643 use has been decreased by optimizing function parameters and local
6644 variables, and naming conventions across the manager have been
6646 for clarity and ease of maintenance (this includes function, parameter,
6647 variable, and struct/typedef names.) The update may force changes in some
6648 driver code, depending on how resources are handled by the host OS.
6650 All Resource Manager dispatch and information tables have been moved to a
6651 single location for clarity and ease of maintenance. One new file was
6652 created, named "rsinfo.c".
6654 The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to
6655 guarantee that the argument is not evaluated twice, making them less prone
6656 to macro side-effects. However, since there exists the possibility of
6657 additional stack use if a particular compiler cannot optimize them (such
6659 in the debug generation case), the original macros are optionally
6661 Note that some invocations of the return_VALUE macro may now cause size
6662 mismatch warnings; the return_UINT8 and return_UINT32 macros are provided
6664 eliminate these. (From Randy Dunlap)
6666 Implemented a new mechanism to enable debug tracing for individual control
6667 methods. A new external interface, AcpiDebugTrace, is provided to enable
6668 this mechanism. The intent is to allow the host OS to easily enable and
6669 disable tracing for problematic control methods. This interface can be
6670 easily exposed to a user or debugger interface if desired. See the file
6671 psxface.c for details.
6673 AcpiUtCallocate will now return a valid pointer if a length of zero is
6674 specified - a length of one is used and a warning is issued. This matches
6675 the behavior of AcpiUtAllocate.
6677 Code and Data Size: The current and previous library sizes for the core
6678 subsystem are shown below. These are the code and data sizes for the
6679 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
6680 values do not include any ACPI driver or OSPM code. The debug version of
6682 code includes the debug output trace mechanism and has a much larger code
6683 and data size. Note that these values will vary depending on the
6685 of the compiler and the compiler options used during generation.
6688 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
6689 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
6691 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
6692 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
6695 2) iASL Compiler/Disassembler:
6697 A remark is issued if the effective compile-time length of a package or
6698 buffer is zero. Previously, this was a warning.
6700 ----------------------------------------
6701 16 September 2005. Summary of changes for version 20050916:
6703 1) ACPI CA Core Subsystem:
6705 Fixed a problem within the Resource Manager where support for the Generic
6706 Register descriptor was not fully implemented. This descriptor is now
6708 recognized, parsed, disassembled, and displayed.
6710 Completely restructured the Resource Manager code to utilize table-driven
6711 dispatch and lookup, eliminating many of the large switch() statements.
6713 reduces overall subsystem code size and code complexity. Affects the
6714 resource parsing and construction, disassembly, and debug dump output.
6716 Cleaned up and restructured the debug dump output for all resource
6717 descriptors. Improved readability of the output and reduced code size.
6719 Fixed a problem where changes to internal data structures caused the
6720 optional ACPI_MUTEX_DEBUG code to fail compilation if specified.
6722 Code and Data Size: The current and previous library sizes for the core
6723 subsystem are shown below. These are the code and data sizes for the
6724 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
6725 values do not include any ACPI driver or OSPM code. The debug version of
6727 code includes the debug output trace mechanism and has a much larger code
6728 and data size. Note that these values will vary depending on the
6730 of the compiler and the compiler options used during generation.
6733 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
6734 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
6736 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
6737 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
6740 2) iASL Compiler/Disassembler:
6742 Updated the disassembler to automatically insert an EndDependentFn() macro
6743 into the ASL stream if this macro is missing in the original AML code,
6744 simplifying compilation of the resulting ASL module.
6746 Fixed a problem in the disassembler where a disassembled ResourceSource
6747 string (within a large resource descriptor) was not surrounded by quotes
6749 not followed by a comma, causing errors when the resulting ASL module was
6750 compiled. Also, escape sequences within a ResourceSource string are now
6751 handled correctly (especially "\\")
6753 ----------------------------------------
6754 02 September 2005. Summary of changes for version 20050902:
6756 1) ACPI CA Core Subsystem:
6758 Fixed a problem with the internal Owner ID allocation and deallocation
6759 mechanisms for control method execution and recursive method invocation.
6760 This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId"
6761 messages seen on some systems. Recursive method invocation depth is
6762 currently limited to 255. (Alexey Starikovskiy)
6764 Completely eliminated all vestiges of support for the "module-level
6765 executable code" until this support is fully implemented and debugged.
6767 should eliminate the NO_RETURN_VALUE exceptions seen during table load on
6768 some systems that invoke this support.
6770 Fixed a problem within the resource manager code where the transaction
6772 for a 64-bit address descriptor were handled incorrectly in the type-
6775 Consolidated duplicate code within the address descriptor resource manager
6776 code, reducing overall subsystem code size.
6778 Fixed a fault when using the AML debugger "disassemble" command to
6779 disassemble individual control methods.
6781 Removed references to the "release_current" directory within the Unix
6784 Code and Data Size: The current and previous core subsystem library sizes
6785 are shown below. These are the code and data sizes for the acpica.lib
6786 produced by the Microsoft Visual C++ 6.0 compiler. These values do not
6787 include any ACPI driver or OSPM code. The debug version of the code
6789 the debug output trace mechanism and has a much larger code and data size.
6790 Note that these values will vary depending on the efficiency of the
6792 and the compiler options used during generation.
6795 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
6796 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
6798 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
6799 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
6802 2) iASL Compiler/Disassembler:
6804 Implemented an error check for illegal duplicate values in the interrupt
6806 dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and
6809 Implemented error checking for the Irq() and IrqNoFlags() macros to detect
6810 too many values in the interrupt list (16 max) and invalid values in the
6813 The maximum length string literal within an ASL file is now restricted to
6814 200 characters as per the ACPI specification.
6816 Fixed a fault when using the -ln option (generate namespace listing).
6818 Implemented an error check to determine if a DescriptorName within a
6819 resource descriptor has already been used within the current scope.
6821 ----------------------------------------
6822 15 August 2005. Summary of changes for version 20050815:
6824 1) ACPI CA Core Subsystem:
6826 Implemented a full bytewise compare to determine if a table load request
6828 attempting to load a duplicate table. The compare is performed if the
6830 signatures and table lengths match. This will allow different tables with
6831 the same OEM Table ID and revision to be loaded - probably against the
6833 specification, but discovered in the field nonetheless.
6835 Added the changes.txt logfile to each of the zipped release packages.
6837 Code and Data Size: Current and previous core subsystem library sizes are
6838 shown below. These are the code and data sizes for the acpica.lib produced
6839 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
6840 any ACPI driver or OSPM code. The debug version of the code includes the
6841 debug output trace mechanism and has a much larger code and data size.
6843 that these values will vary depending on the efficiency of the compiler
6845 the compiler options used during generation.
6848 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
6849 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
6851 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
6852 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
6855 2) iASL Compiler/Disassembler:
6857 Fixed a problem where incorrect AML code could be generated for Package
6858 objects if optimization is disabled (via the -oa switch).
6860 Fixed a problem with where incorrect AML code is generated for variable-
6861 length packages when the package length is not specified and the number of
6862 initializer values is greater than 255.
6865 ----------------------------------------
6866 29 July 2005. Summary of changes for version 20050729:
6868 1) ACPI CA Core Subsystem:
6870 Implemented support to ignore an attempt to install/load a particular ACPI
6871 table more than once. Apparently there exists BIOS code that repeatedly
6872 attempts to load the same SSDT upon certain events. With assistance from
6873 Venkatesh Pallipadi.
6875 Restructured the main interface to the AML parser in order to correctly
6876 handle all exceptional conditions. This will prevent leakage of the
6878 resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on
6880 machines. With assistance from Alexey Starikovskiy.
6882 Support for "module level code" has been disabled in this version due to a
6883 number of issues that have appeared on various machines. The support can
6885 enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem
6886 compilation. When the issues are fully resolved, the code will be enabled
6890 Modified the internal functions for debug print support to define the
6891 FunctionName parameter as a (const char *) for compatibility with compiler
6892 built-in macros such as __FUNCTION__, etc.
6894 Linted the entire ACPICA source tree for both 32-bit and 64-bit.
6896 Implemented support to display an object count summary for the AML
6898 commands Object and Methods.
6900 Code and Data Size: Current and previous core subsystem library sizes are
6901 shown below. These are the code and data sizes for the acpica.lib produced
6902 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
6903 any ACPI driver or OSPM code. The debug version of the code includes the
6904 debug output trace mechanism and has a much larger code and data size.
6906 that these values will vary depending on the efficiency of the compiler
6908 the compiler options used during generation.
6911 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
6912 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
6914 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
6915 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
6918 2) iASL Compiler/Disassembler:
6920 Fixed a regression that appeared in the 20050708 version of the compiler
6921 where an error message was inadvertently emitted for invocations of the
6923 reserved control method.
6925 ----------------------------------------
6926 08 July 2005. Summary of changes for version 20050708:
6928 1) ACPI CA Core Subsystem:
6930 The use of the CPU stack in the debug version of the subsystem has been
6931 considerably reduced. Previously, a debug structure was declared in every
6932 function that used the debug macros. This structure has been removed in
6933 favor of declaring the individual elements as parameters to the debug
6934 functions. This reduces the cumulative stack use during nested execution
6936 ACPI function calls at the cost of a small increase in the code size of
6938 debug version of the subsystem. With assistance from Alexey Starikovskiy
6942 Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent
6943 headers to define a macro that will return the current function name at
6944 runtime (such as __FUNCTION__ or _func_, etc.) The function name is used
6946 the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the
6947 compiler-dependent header, the function name is saved on the CPU stack
6949 pointer per function.) This mechanism is used because apparently there
6950 exists no standard ANSI-C defined macro that that returns the function
6953 Redesigned and reimplemented the "Owner ID" mechanism used to track
6954 namespace objects created/deleted by ACPI tables and control method
6955 execution. A bitmap is now used to allocate and free the IDs, thus solving
6956 the wraparound problem present in the previous implementation. The size of
6957 the namespace node descriptor was reduced by 2 bytes as a result (Alexey
6960 Removed the UINT32_BIT and UINT16_BIT types that were used for the
6962 flag definitions within the headers for the predefined ACPI tables. These
6963 have been replaced by UINT8_BIT in order to increase the code portability
6965 the subsystem. If the use of UINT8 remains a problem, we may be forced to
6966 eliminate bitfields entirely because of a lack of portability.
6968 Enhanced the performance of the AcpiUtUpdateObjectReference procedure.
6970 is a frequently used function and this improvement increases the
6972 of the entire subsystem (Alexey Starikovskiy).
6974 Fixed several possible memory leaks and the inverse - premature object
6975 deletion (Alexey Starikovskiy).
6977 Code and Data Size: Current and previous core subsystem library sizes are
6978 shown below. These are the code and data sizes for the acpica.lib produced
6979 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
6980 any ACPI driver or OSPM code. The debug version of the code includes the
6981 debug output trace mechanism and has a much larger code and data size.
6983 that these values will vary depending on the efficiency of the compiler
6985 the compiler options used during generation.
6988 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
6989 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
6991 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
6992 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
6994 ----------------------------------------
6995 24 June 2005. Summary of changes for version 20050624:
6997 1) ACPI CA Core Subsystem:
6999 Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for
7000 the host-defined cache object. This allows the OSL implementation to
7002 and type this object in any manner desired, simplifying the OSL
7003 implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for
7004 Linux, and should be defined in the OS-specific header file for other
7005 operating systems as required.
7007 Changed the interface to AcpiOsAcquireObject to directly return the
7008 requested object as the function return (instead of ACPI_STATUS.) This
7009 change was made for performance reasons, since this is the purpose of the
7010 interface in the first place. AcpiOsAcquireObject is now similar to the
7011 AcpiOsAllocate interface.
7013 Implemented a new AML debugger command named Businfo. This command
7015 information about all devices that have an associate _PRT object. The
7017 _HID, _UID, and _CID are displayed for these devices.
7019 Modified the initialization sequence in AcpiInitializeSubsystem to call
7021 OSL interface AcpiOslInitialize first, before any local initialization.
7023 change was required because the global initialization now calls OSL
7026 Enhanced the Dump command to display the entire contents of Package
7028 (including all sub-objects and their values.)
7030 Restructured the code base to split some files because of size and/or
7031 because the code logically belonged in a separate file. New files are
7033 below. All makefiles and project files included in the ACPI CA release
7036 utilities/utcache.c /* Local cache interfaces */
7037 utilities/utmutex.c /* Local mutex support */
7038 utilities/utstate.c /* State object support */
7039 interpreter/parser/psloop.c /* Main AML parse loop */
7041 Code and Data Size: Current and previous core subsystem library sizes are
7042 shown below. These are the code and data sizes for the acpica.lib produced
7043 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
7044 any ACPI driver or OSPM code. The debug version of the code includes the
7045 debug output trace mechanism and has a much larger code and data size.
7047 that these values will vary depending on the efficiency of the compiler
7049 the compiler options used during generation.
7052 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
7053 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
7055 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
7056 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
7059 2) iASL Compiler/Disassembler:
7061 Fixed a regression introduced in version 20050513 where the use of a
7063 object within a Case() statement caused a compile time exception. The
7064 original behavior has been restored (a Match() operator is emitted.)
7066 ----------------------------------------
7067 17 June 2005. Summary of changes for version 20050617:
7069 1) ACPI CA Core Subsystem:
7071 Moved the object cache operations into the OS interface layer (OSL) to
7073 the host OS to handle these operations if desired (for example, the Linux
7074 OSL will invoke the slab allocator). This support is optional; the compile
7075 time define ACPI_USE_LOCAL_CACHE may be used to utilize the original cache
7076 code in the ACPI CA core. The new OSL interfaces are shown below. See
7077 utalloc.c for an example implementation, and acpiosxf.h for the exact
7078 interface definitions. With assistance from Alexey Starikovskiy.
7085 Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to
7087 and restore a flags parameter. This fits better with many OS lock models.
7088 Note: the current execution state (interrupt handler or not) is no longer
7089 passed to these interfaces. If necessary, the OSL must determine this
7091 by itself, a simple and fast operation. With assistance from Alexey
7094 Fixed a problem in the ACPI table handling where a valid XSDT was assumed
7095 present if the revision of the RSDP was 2 or greater. According to the
7097 specification, the XSDT is optional in all cases, and the table manager
7098 therefore now checks for both an RSDP >=2 and a valid XSDT pointer.
7099 Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs contain
7102 Fixed an interpreter problem with the Mid() operator in the case of an
7104 string where the resulting output string is of zero length. It now
7106 returns a valid, null terminated string object instead of a string object
7107 with a null pointer.
7109 Fixed a problem with the control method argument handling to allow a store
7110 to an Arg object that already contains an object of type Device. The
7112 object is now correctly overwritten. Previously, an error was returned.
7115 Enhanced the debugger Find command to emit object values in addition to
7117 found object pathnames. The output format is the same as the dump
7121 Enhanced the debugger Set command. It now has the ability to set the value
7122 of any Named integer object in the namespace (Previously, only method
7124 and args could be set.)
7126 Code and Data Size: Current and previous core subsystem library sizes are
7127 shown below. These are the code and data sizes for the acpica.lib produced
7128 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
7129 any ACPI driver or OSPM code. The debug version of the code includes the
7130 debug output trace mechanism and has a much larger code and data size.
7132 that these values will vary depending on the efficiency of the compiler
7134 the compiler options used during generation.
7137 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
7138 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
7140 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
7141 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
7144 2) iASL Compiler/Disassembler:
7146 Fixed a regression in the disassembler where if/else/while constructs were
7147 output incorrectly. This problem was introduced in the previous release
7148 (20050526). This problem also affected the single-step disassembly in the
7151 Fixed a problem where compiling the reserved _OSI method would randomly
7153 rarely) produce compile errors.
7155 Enhanced the disassembler to emit compilable code in the face of incorrect
7156 AML resource descriptors. If the optional ResourceSourceIndex is present,
7157 but the ResourceSource is not, do not emit the ResourceSourceIndex in the
7158 disassembly. Otherwise, the resulting code cannot be compiled without
7161 ----------------------------------------
7162 26 May 2005. Summary of changes for version 20050526:
7164 1) ACPI CA Core Subsystem:
7166 Implemented support to execute Type 1 and Type 2 AML opcodes appearing at
7167 the module level (not within a control method.) These opcodes are executed
7168 exactly once at the time the table is loaded. This type of code was legal
7170 until the release of ACPI 2.0B (2002) and is now supported within ACPI CA
7172 order to provide backwards compatibility with earlier BIOS
7174 This eliminates the "Encountered executable code at module level" warning
7175 that was previously generated upon detection of such code.
7177 Fixed a problem in the interpreter where an AE_NOT_FOUND exception could
7178 inadvertently be generated during the lookup of namespace objects in the
7179 second pass parse of ACPI tables and control methods. It appears that this
7180 problem could occur during the resolution of forward references to
7184 Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function,
7185 corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This
7186 allows the deadlock detection debug code to be compiled out in the normal
7187 case, improving mutex performance (and overall subsystem performance)
7190 Implemented a handful of miscellaneous fixes for possible memory leaks on
7191 error conditions and error handling control paths. These fixes were
7192 suggested by FreeBSD and the Coverity Prevent source code analysis tool.
7194 Added a check for a null RSDT pointer in AcpiGetFirmwareTable (tbxfroot.c)
7195 to prevent a fault in this error case.
7197 Code and Data Size: Current and previous core subsystem library sizes are
7198 shown below. These are the code and data sizes for the acpica.lib produced
7199 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
7200 any ACPI driver or OSPM code. The debug version of the code includes the
7201 debug output trace mechanism and has a much larger code and data size.
7203 that these values will vary depending on the efficiency of the compiler
7205 the compiler options used during generation.
7208 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
7209 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
7211 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
7212 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
7215 2) iASL Compiler/Disassembler:
7217 Implemented support to allow Type 1 and Type 2 ASL operators to appear at
7218 the module level (not within a control method.) These operators will be
7219 executed once at the time the table is loaded. This type of code was legal
7220 up until the release of ACPI 2.0B (2002) and is now supported by the iASL
7221 compiler in order to provide backwards compatibility with earlier BIOS ASL
7224 The ACPI integer width (specified via the table revision ID or the -r
7225 override, 32 or 64 bits) is now used internally during compile-time
7227 folding to ensure that constants are truncated to 32 bits if necessary.
7228 Previously, the revision ID value was only emitted in the AML table
7231 An error message is now generated for the Mutex and Method operators if
7233 SyncLevel parameter is outside the legal range of 0 through 15.
7235 Fixed a problem with the Method operator ParameterTypes list handling
7237 3.0). Previously, more than 2 types or 2 arguments generated a syntax
7239 The actual underlying implementation of method argument typechecking is
7240 still under development, however.
7242 ----------------------------------------
7243 13 May 2005. Summary of changes for version 20050513:
7245 1) ACPI CA Core Subsystem:
7247 Implemented support for PCI Express root bridges -- added support for
7249 PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup.
7251 The interpreter now automatically truncates incoming 64-bit constants to
7253 bits if currently executing out of a 32-bit ACPI table (Revision < 2).
7255 also affects the iASL compiler constant folding. (Note: as per below, the
7256 iASL compiler no longer allows 64-bit constants within 32-bit tables.)
7258 Fixed a problem where string and buffer objects with "static" pointers
7259 (pointers to initialization data within an ACPI table) were not handled
7260 consistently. The internal object copy operation now always copies the
7262 to a newly allocated buffer, regardless of whether the source object is
7265 Fixed a problem with the FromBCD operator where an implicit result
7266 conversion was improperly performed while storing the result to the target
7267 operand. Since this is an "explicit conversion" operator, the implicit
7268 conversion should never be performed on the output.
7270 Fixed a problem with the CopyObject operator where a copy to an existing
7271 named object did not always completely overwrite the existing object
7273 at name. Specifically, a buffer-to-buffer copy did not delete the existing
7276 Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces and
7277 structs for consistency.
7279 Code and Data Size: Current and previous core subsystem library sizes are
7280 shown below. These are the code and data sizes for the acpica.lib produced
7281 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
7282 any ACPI driver or OSPM code. The debug version of the code includes the
7283 debug output trace mechanism and has a much larger code and data size.
7285 that these values will vary depending on the efficiency of the compiler
7287 the compiler options used during generation.
7290 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
7291 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
7292 Current Release: (Same sizes)
7293 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
7294 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
7297 2) iASL Compiler/Disassembler:
7299 The compiler now emits a warning if an attempt is made to generate a 64-
7301 integer constant from within a 32-bit ACPI table (Revision < 2). The
7303 is truncated to 32 bits.
7305 Fixed a problem with large package objects: if the static length of the
7306 package is greater than 255, the "variable length package" opcode is
7307 emitted. Previously, this caused an error. This requires an update to the
7308 ACPI spec, since it currently (incorrectly) states that packages larger
7310 255 elements are not allowed.
7312 The disassembler now correctly handles variable length packages and
7314 larger than 255 elements.
7316 ----------------------------------------
7317 08 April 2005. Summary of changes for version 20050408:
7319 1) ACPI CA Core Subsystem:
7321 Fixed three cases in the interpreter where an "index" argument to an ASL
7322 function was still (internally) 32 bits instead of the required 64 bits.
7323 This was the Index argument to the Index, Mid, and Match operators.
7325 The "strupr" function is now permanently local (AcpiUtStrupr), since this
7327 not a POSIX-defined function and not present in most kernel-level C
7328 libraries. All references to the C library strupr function have been
7332 Completed the deployment of static functions/prototypes. All prototypes
7334 the static attribute have been moved from the headers to the owning C
7337 Implemented an extract option (-e) for the AcpiBin utility (AML binary
7338 utility). This option allows the utility to extract individual ACPI tables
7339 from the output of AcpiDmp. It provides the same functionality of the
7340 acpixtract.pl perl script without the worry of setting the correct perl
7341 options. AcpiBin runs on Windows and has not yet been generated/validated
7343 the Linux/Unix environment (but should be soon).
7345 Updated and fixed the table dump option for AcpiBin (-d). This option
7346 converts a single ACPI table to a hex/ascii file, similar to the output of
7349 Code and Data Size: Current and previous core subsystem library sizes are
7350 shown below. These are the code and data sizes for the acpica.lib produced
7351 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
7352 any ACPI driver or OSPM code. The debug version of the code includes the
7353 debug output trace mechanism and has a much larger code and data size.
7355 that these values will vary depending on the efficiency of the compiler
7357 the compiler options used during generation.
7360 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
7361 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
7363 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
7364 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
7367 2) iASL Compiler/Disassembler:
7369 Disassembler fix: Added a check to ensure that the table length found in
7371 ACPI table header within the input file is not longer than the actual
7373 file size. This indicates some kind of file or table corruption.
7375 ----------------------------------------
7376 29 March 2005. Summary of changes for version 20050329:
7378 1) ACPI CA Core Subsystem:
7380 An error is now generated if an attempt is made to create a Buffer Field
7382 length zero (A CreateField with a length operand of zero.)
7384 The interpreter now issues a warning whenever executable code at the
7386 level is detected during ACPI table load. This will give some idea of the
7387 prevalence of this type of code.
7389 Implemented support for references to named objects (other than control
7390 methods) within package objects.
7392 Enhanced package object output for the debug object. Package objects are
7394 completely dumped, showing all elements.
7396 Enhanced miscellaneous object output for the debug object. Any object can
7397 now be written to the debug object (for example, a device object can be
7398 written, and the type of the object will be displayed.)
7400 The "static" qualifier has been added to all local functions across both
7402 core subsystem and the iASL compiler.
7404 The number of "long" lines (> 80 chars) within the source has been
7405 significantly reduced, by about 1/3.
7407 Cleaned up all header files to ensure that all CA/iASL functions are
7408 prototyped (even static functions) and the formatting is consistent.
7410 Two new header files have been added, acopcode.h and acnames.h.
7412 Removed several obsolete functions that were no longer used.
7414 Code and Data Size: Current and previous core subsystem library sizes are
7415 shown below. These are the code and data sizes for the acpica.lib produced
7416 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
7417 any ACPI driver or OSPM code. The debug version of the code includes the
7418 debug output trace mechanism and has a much larger code and data size.
7420 that these values will vary depending on the efficiency of the compiler
7422 the compiler options used during generation.
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
7428 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
7429 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
7433 2) iASL Compiler/Disassembler:
7435 Fixed a problem with the resource descriptor generation/support. For the
7436 ResourceSourceIndex and the ResourceSource fields, both must be present,
7438 both must be not present - can't have one without the other.
7440 The compiler now returns non-zero from the main procedure if any errors
7442 occurred during the compilation.
7445 ----------------------------------------
7446 09 March 2005. Summary of changes for version 20050309:
7448 1) ACPI CA Core Subsystem:
7450 The string-to-buffer implicit conversion code has been modified again
7452 a change to the ACPI specification. In order to match the behavior of the
7453 other major ACPI implementation, the target buffer is no longer truncated
7455 the source string is smaller than an existing target buffer. This change
7456 requires an update to the ACPI spec, and should eliminate the recent
7457 AE_AML_BUFFER_LIMIT issues.
7459 The "implicit return" support was rewritten to a new algorithm that solves
7460 the general case. Rather than attempt to determine when a method is about
7462 exit, the result of every ASL operator is saved momentarily until the very
7463 next ASL operator is executed. Therefore, no matter how the method exits,
7464 there will always be a saved implicit return value. This feature is only
7465 enabled with the AcpiGbl_EnableInterpreterSlack flag, and should eliminate
7466 AE_AML_NO_RETURN_VALUE errors when enabled.
7468 Implemented implicit conversion support for the predicate (operand) of the
7469 If, Else, and While operators. String and Buffer arguments are
7471 converted to Integers.
7473 Changed the string-to-integer conversion behavior to match the new ACPI
7474 errata: "If no integer object exists, a new integer is created. The ASCII
7475 string is interpreted as a hexadecimal constant. Each string character is
7476 interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting
7477 with the first character as the most significant digit, and ending with
7479 first non-hexadecimal character or end-of-string." This means that the
7481 non-hex character terminates the conversion and this is the code that was
7484 Fixed a problem where the ObjectType operator would fail (fault) when used
7485 on an Index of a Package which pointed to a null package element. The
7486 operator now properly returns zero (Uninitialized) in this case.
7488 Fixed a problem where the While operator used excessive memory by not
7489 properly popping the result stack during execution. There was no memory
7491 after execution, however. (Code provided by Valery Podrezov.)
7493 Fixed a problem where references to control methods within Package objects
7494 caused the method to be invoked, instead of producing a reference object
7495 pointing to the method.
7497 Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) to
7498 improve performance and reduce code size. (Code provided by Alexey
7501 Code and Data Size: Current and previous core subsystem library sizes are
7502 shown below. These are the code and data sizes for the acpica.lib produced
7503 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
7504 any ACPI driver or OSPM code. The debug version of the code includes the
7505 debug output trace mechanism and has a much larger code and data size.
7507 that these values will vary depending on the efficiency of the compiler
7509 the compiler options used during generation.
7512 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
7513 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
7515 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
7516 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
7519 2) iASL Compiler/Disassembler:
7521 Fixed a problem with the Return operator with no arguments. Since the AML
7522 grammar for the byte encoding requires an operand for the Return opcode,
7524 compiler now emits a Return(Zero) for this case. An ACPI specification
7525 update has been written for this case.
7527 For tables other than the DSDT, namepath optimization is automatically
7528 disabled. This is because SSDTs can be loaded anywhere in the namespace,
7530 compiler has no knowledge of where, and thus cannot optimize namepaths.
7532 Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was
7533 inadvertently omitted from the ACPI specification, and will require an
7536 The source file scan for ASCII characters is now optional (-a). This
7538 was made because some vendors place non-ascii characters within comments.
7539 However, the scan is simply a brute-force byte compare to ensure all
7540 characters in the file are in the range 0x00 to 0x7F.
7542 Fixed a problem with the CondRefOf operator where the compiler was
7543 inappropriately checking for the existence of the target. Since the point
7545 the operator is to check for the existence of the target at run-time, the
7546 compiler no longer checks for the target existence.
7548 Fixed a problem where errors generated from the internal AML interpreter
7549 during constant folding were not handled properly, causing a fault.
7551 Fixed a problem with overly aggressive range checking for the Stall
7552 operator. The valid range (max 255) is now only checked if the operand is
7554 type Integer. All other operand types cannot be statically checked.
7556 Fixed a problem where control method references within the RefOf, DeRefOf,
7557 and ObjectType operators were not treated properly. They are now treated
7559 actual references, not method invocations.
7561 Fixed and enhanced the "list namespace" option (-ln). This option was
7563 a number of releases ago.
7565 Improved error handling for the Field, IndexField, and BankField
7567 The compiler now cleanly reports and recovers from errors in the field
7568 component (FieldUnit) list.
7570 Fixed a disassembler problem where the optional ResourceDescriptor fields
7571 TRS and TTP were not always handled correctly.
7573 Disassembler - Comments in output now use "//" instead of "/*"
7575 ----------------------------------------
7576 28 February 2005. Summary of changes for version 20050228:
7578 1) ACPI CA Core Subsystem:
7580 Fixed a problem where the result of an Index() operator (an object
7581 reference) must increment the reference count on the target object for the
7582 life of the object reference.
7584 Implemented AML Interpreter and Debugger support for the new ACPI 3.0
7585 Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and
7587 resource descriptors.
7589 Implemented support in the _OSI method for the ACPI 3.0 "Extended Address
7590 Space Descriptor" string, indicating interpreter support for the
7594 Implemented header support for the new ACPI 3.0 FADT flag bits.
7596 Implemented header support for the new ACPI 3.0 PCI Express bits for the
7598 status/enable registers.
7600 Updated header support for the MADT processor local Apic struct and MADT
7601 platform interrupt source struct for new ACPI 3.0 fields.
7603 Implemented header support for the SRAT and SLIT ACPI tables.
7605 Implemented the -s switch in AcpiExec to enable the "InterpreterSlack"
7609 Code and Data Size: Current and previous core subsystem library sizes are
7610 shown below. These are the code and data sizes for the acpica.lib produced
7611 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
7612 any ACPI driver or OSPM code. The debug version of the code includes the
7613 debug output trace mechanism and has a much larger code and data size.
7615 that these values will vary depending on the efficiency of the compiler
7617 the compiler options used during generation.
7620 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
7621 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
7623 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
7624 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
7627 2) iASL Compiler/Disassembler:
7629 Fixed a problem with the internal 64-bit String-to-integer conversion with
7630 strings less than two characters long.
7632 Fixed a problem with constant folding where the result of the Index()
7633 operator can not be considered a constant. This means that Index() cannot
7635 a type3 opcode and this will require an update to the ACPI specification.
7637 Disassembler: Implemented support for the TTP, MTP, and TRS resource
7638 descriptor fields. These fields were inadvertently ignored and not output
7640 the disassembly of the resource descriptor.
7643 ----------------------------------------
7644 11 February 2005. Summary of changes for version 20050211:
7646 1) ACPI CA Core Subsystem:
7648 Implemented ACPI 3.0 support for implicit conversion within the Match()
7649 operator. MatchObjects can now be of type integer, buffer, or string
7651 of just type integer. Package elements are implicitly converted to the
7653 of the MatchObject. This change aligns the behavior of Match() with the
7654 behavior of the other logical operators (LLess(), etc.) It also requires
7656 errata change to the ACPI specification as this support was intended for
7657 ACPI 3.0, but was inadvertently omitted.
7659 Fixed a problem with the internal implicit "to buffer" conversion. Strings
7660 that are converted to buffers will cause buffer truncation if the string
7662 smaller than the target buffer. Integers that are converted to buffers
7664 not cause buffer truncation, only zero extension (both as per the ACPI
7665 spec.) The problem was introduced when code was added to truncate the
7666 buffer, but this should not be performed in all cases, only the string
7669 Fixed a problem with the Buffer and Package operators where the
7671 would get confused if two such operators were used as operands to an ASL
7672 operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result
7673 stack was not being popped after the execution of these operators,
7675 in an AE_NO_RETURN_VALUE exception.
7677 Fixed a problem with constructs of the form Store(Index(...),...). The
7678 reference object returned from Index was inadvertently resolved to an
7680 value. This problem was introduced in version 20050114 when the behavior
7682 Store() was modified to restrict the object types that can be used as the
7683 source operand (to match the ACPI specification.)
7685 Reduced excessive stack use within the AcpiGetObjectInfo procedure.
7687 Added a fix to aclinux.h to allow generation of AcpiExec on Linux.
7689 Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct.
7691 Code and Data Size: Current and previous core subsystem library sizes are
7692 shown below. These are the code and data sizes for the acpica.lib produced
7693 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
7694 any ACPI driver or OSPM code. The debug version of the code includes the
7695 debug output trace mechanism and has a much larger code and data size.
7697 that these values will vary depending on the efficiency of the compiler
7699 the compiler options used during generation.
7702 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
7703 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
7705 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
7706 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
7709 2) iASL Compiler/Disassembler:
7711 Fixed a code generation problem in the constant folding optimization code
7712 where incorrect code was generated if a constant was reduced to a buffer
7713 object (i.e., a reduced type 5 opcode.)
7715 Fixed a typechecking problem for the ToBuffer operator. Caused by an
7716 incorrect return type in the internal opcode information table.
7718 ----------------------------------------
7719 25 January 2005. Summary of changes for version 20050125:
7721 1) ACPI CA Core Subsystem:
7723 Fixed a recently introduced problem with the Global Lock where the
7724 underlying semaphore was not created. This problem was introduced in
7725 version 20050114, and caused an AE_AML_NO_OPERAND exception during an
7726 Acquire() operation on _GL.
7728 The local object cache is now optional, and is disabled by default. Both
7729 AcpiExec and the iASL compiler enable the cache because they run in user
7730 mode and this enhances their performance. #define ACPI_ENABLE_OBJECT_CACHE
7731 to enable the local cache.
7733 Fixed an issue in the internal function AcpiUtEvaluateObject concerning
7735 optional "implicit return" support where an error was returned if no
7737 object was expected, but one was implicitly returned. AE_OK is now
7739 in this case and the implicitly returned object is deleted.
7740 AcpiUtEvaluateObject is only occasionally used, and only to execute
7742 methods such as _STA and _INI where the return type is known up front.
7744 Fixed a few issues with the internal convert-to-integer code. It now
7746 an error if an attempt is made to convert a null string, a string of only
7747 blanks/tabs, or a zero-length buffer. This affects both implicit
7749 and explicit conversion via the ToInteger() operator.
7751 The internal debug code in AcpiUtAcquireMutex has been commented out. It
7753 not needed for normal operation and should increase the performance of the
7754 entire subsystem. The code remains in case it is needed for debug purposes
7757 The AcpiExec source and makefile are included in the Unix/Linux package
7761 Code and Data Size: Current and previous core subsystem library sizes are
7762 shown below. These are the code and data sizes for the acpica.lib produced
7763 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
7764 any ACPI driver or OSPM code. The debug version of the code includes the
7765 debug output trace mechanism and has a much larger code and data size.
7767 that these values will vary depending on the efficiency of the compiler
7769 the compiler options used during generation.
7772 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
7773 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
7775 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
7776 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
7778 2) iASL Compiler/Disassembler:
7780 Switch/Case support: A warning is now issued if the type of the Switch
7782 cannot be determined at compile time. For example, Switch(Arg0) will
7783 generate the warning, and the type is assumed to be an integer. As per the
7784 ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate
7788 Switch/Case support: Implemented support for buffer and string objects as
7789 the switch value. This is an ACPI 3.0 feature, now that LEqual supports
7790 buffers and strings.
7792 Switch/Case support: The emitted code for the LEqual() comparisons now
7794 the switch value as the first operand, not the second. The case value is
7796 the second operand, and this allows the case value to be implicitly
7797 converted to the type of the switch value, not the other way around.
7799 Switch/Case support: Temporary variables are now emitted immediately
7801 the control method, not at the global level. This means that there are now
7802 36 temps available per-method, not 36 temps per-module as was the case
7804 the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.)
7806 ----------------------------------------
7807 14 January 2005. Summary of changes for version 20050114:
7809 Added 2005 copyright to all module headers. This affects every module in
7810 the core subsystem, iASL compiler, and the utilities.
7812 1) ACPI CA Core Subsystem:
7814 Fixed an issue with the String-to-Buffer conversion code where the string
7815 null terminator was not included in the buffer after conversion, but there
7816 is existing ASL that assumes the string null terminator is included. This
7818 the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was
7819 introduced in the previous version when the code was updated to correctly
7820 set the converted buffer size as per the ACPI specification. The ACPI spec
7821 is ambiguous and will be updated to specify that the null terminator must
7823 included in the converted buffer. This also affects the ToBuffer() ASL
7826 Fixed a problem with the Mid() ASL/AML operator where it did not work
7827 correctly on Buffer objects. Newly created sub-buffers were not being
7832 Fixed a problem in AcpiTbFindTable where incorrect string compares were
7833 performed on the OemId and OemTableId table header fields. These fields
7835 not null terminated, so strncmp is now used instead of strcmp.
7837 Implemented a restriction on the Store() ASL/AML operator to align the
7838 behavior with the ACPI specification. Previously, any object could be
7840 as the source operand. Now, the only objects that may be used are
7842 Buffers, Strings, Packages, Object References, and DDB Handles. If
7843 necessary, the original behavior can be restored by enabling the
7844 EnableInterpreterSlack flag.
7846 Enhanced the optional "implicit return" support to allow an implicit
7848 value from methods that are invoked externally via the AcpiEvaluateObject
7849 interface. This enables implicit returns from the _STA and _INI methods,
7852 Changed the Revision() ASL/AML operator to return the current version of
7854 AML interpreter, in the YYYYMMDD format. Previously, it incorrectly
7856 the supported ACPI version (This is the function of the _REV method).
7858 Updated the _REV predefined method to return the currently supported
7862 Implemented batch mode option for the AcpiExec utility (-b).
7864 Code and Data Size: Current and previous core subsystem library sizes are
7865 shown below. These are the code and data sizes for the acpica.lib produced
7866 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
7867 any ACPI driver or OSPM code. The debug version of the code includes the
7868 debug output trace mechanism and has a much larger code and data size.
7870 that these values will vary depending on the efficiency of the compiler
7872 the compiler options used during generation.
7875 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
7876 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
7878 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
7879 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
7881 ----------------------------------------
7882 10 December 2004. Summary of changes for version 20041210:
7884 ACPI 3.0 support is nearing completion in both the iASL compiler and the
7885 ACPI CA core subsystem.
7887 1) ACPI CA Core Subsystem:
7889 Fixed a problem in the ToDecimalString operator where the resulting string
7890 length was incorrectly calculated. The length is now calculated exactly,
7891 eliminating incorrect AE_STRING_LIMIT exceptions.
7893 Fixed a problem in the ToHexString operator to allow a maximum 200
7895 string to be produced.
7897 Fixed a problem in the internal string-to-buffer and buffer-to-buffer copy
7898 routine where the length of the resulting buffer was not truncated to the
7899 new size (if the target buffer already existed).
7901 Code and Data Size: Current and previous core subsystem library sizes are
7902 shown below. These are the code and data sizes for the acpica.lib produced
7903 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
7904 any ACPI driver or OSPM code. The debug version of the code includes the
7905 debug output trace mechanism and has a much larger code and data size.
7907 that these values will vary depending on the efficiency of the compiler
7909 the compiler options used during generation.
7912 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
7913 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
7915 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
7916 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
7919 2) iASL Compiler/Disassembler:
7921 Implemented the new ACPI 3.0 resource template macros - DWordSpace,
7922 ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace.
7923 Includes support in the disassembler.
7925 Implemented support for the new (ACPI 3.0) parameter to the Register
7929 Fixed a problem where the _HE resource name for the Interrupt macro was
7930 referencing bit 0 instead of bit 1.
7932 Implemented check for maximum 255 interrupts in the Interrupt macro.
7934 Fixed a problem with the predefined resource descriptor names where
7935 incorrect AML code was generated if the offset within the resource buffer
7936 was 0 or 1. The optimizer shortened the AML code to a single byte opcode
7937 but did not update the surrounding package lengths.
7939 Changes to the Dma macro: All channels within the channel list must be in
7940 the range 0-7. Maximum 8 channels can be specified. BusMaster operand is
7941 optional (default is BusMaster).
7943 Implemented check for maximum 7 data bytes for the VendorShort macro.
7945 The ReadWrite parameter is now optional for the Memory32 and similar
7948 ----------------------------------------
7949 03 December 2004. Summary of changes for version 20041203:
7951 1) ACPI CA Core Subsystem:
7953 The low-level field insertion/extraction code (exfldio) has been
7955 rewritten to eliminate unnecessary complexity, bugs, and boundary
7958 Fixed a problem in the ToInteger, ToBuffer, ToHexString, and
7960 operators where the input operand could be inadvertently deleted if no
7961 conversion was necessary (e.g., if the input to ToInteger was an Integer
7964 Fixed a problem with the ToDecimalString and ToHexString where an
7966 exception code was returned if the resulting string would be > 200 chars.
7967 AE_STRING_LIMIT is now returned.
7969 Fixed a problem with the Concatenate operator where AE_OK was always
7970 returned, even if the operation failed.
7972 Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128
7973 semaphores to be allocated.
7975 Code and Data Size: Current and previous core subsystem library sizes are
7976 shown below. These are the code and data sizes for the acpica.lib produced
7977 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
7978 any ACPI driver or OSPM code. The debug version of the code includes the
7979 debug output trace mechanism and has a much larger code and data size.
7981 that these values will vary depending on the efficiency of the compiler
7983 the compiler options used during generation.
7986 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
7987 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
7989 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
7990 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
7993 2) iASL Compiler/Disassembler:
7995 Fixed typechecking for the ObjectType and SizeOf operators. Problem was
7996 recently introduced in 20041119.
7998 Fixed a problem with the ToUUID macro where the upper nybble of each
8000 byte was inadvertently set to zero.
8002 ----------------------------------------
8003 19 November 2004. Summary of changes for version 20041119:
8005 1) ACPI CA Core Subsystem:
8007 Fixed a problem in the internal ConvertToInteger routine where new
8009 were not truncated to 32 bits for 32-bit ACPI tables. This routine
8011 buffers and strings to integers.
8013 Implemented support to store a value to an Index() on a String object.
8015 is an ACPI 2.0 feature that had not yet been implemented.
8017 Implemented new behavior for storing objects to individual package
8019 (via the Index() operator). The previous behavior was to invoke the
8021 conversion rules if an object was already present at the index. The new
8022 behavior is to simply delete any existing object and directly store the
8024 object. Although the ACPI specification seems unclear on this subject,
8026 ACPI implementations behave in this manner. (This is the root of the
8027 AE_BAD_HEX_CONSTANT issue.)
8029 Modified the RSDP memory scan mechanism to support the extended checksum
8031 ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid
8032 RSDP signature is found with a valid checksum.
8034 Code and Data Size: Current and previous core subsystem library sizes are
8035 shown below. These are the code and data sizes for the acpica.lib produced
8036 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8037 any ACPI driver or OSPM code. The debug version of the code includes the
8038 debug output trace mechanism and has a much larger code and data size.
8040 that these values will vary depending on the efficiency of the compiler
8042 the compiler options used during generation.
8045 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
8046 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
8048 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
8049 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
8052 2) iASL Compiler/Disassembler:
8054 Fixed a missing semicolon in the aslcompiler.y file.
8056 ----------------------------------------
8057 05 November 2004. Summary of changes for version 20041105:
8059 1) ACPI CA Core Subsystem:
8061 Implemented support for FADT revision 2. This was an interim table
8063 ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register.
8065 Implemented optional support to allow uninitialized LocalX and ArgX
8066 variables in a control method. The variables are initialized to an
8068 object with a value of zero. This support is enabled by setting the
8069 AcpiGbl_EnableInterpreterSlack flag to TRUE.
8071 Implemented support for Integer objects for the SizeOf operator. Either 4
8072 or 8 is returned, depending on the current integer size (32-bit or 64-bit,
8073 depending on the parent table revision).
8075 Fixed a problem in the implementation of the SizeOf and ObjectType
8077 where the operand was resolved to a value too early, causing incorrect
8078 return values for some objects.
8080 Fixed some possible memory leaks during exceptional conditions.
8082 Code and Data Size: Current and previous core subsystem library sizes are
8083 shown below. These are the code and data sizes for the acpica.lib produced
8084 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8085 any ACPI driver or OSPM code. The debug version of the code includes the
8086 debug output trace mechanism and has a much larger code and data size.
8088 that these values will vary depending on the efficiency of the compiler
8090 the compiler options used during generation.
8093 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
8094 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
8096 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
8097 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
8100 2) iASL Compiler/Disassembler:
8102 Implemented support for all ACPI 3.0 reserved names and methods.
8104 Implemented all ACPI 3.0 grammar elements in the front-end, including
8105 support for semicolons.
8107 Implemented the ACPI 3.0 Function() and ToUUID() macros
8109 Fixed a problem in the disassembler where a Scope() operator would not be
8110 emitted properly if the target of the scope was in another table.
8112 ----------------------------------------
8113 15 October 2004. Summary of changes for version 20041015:
8115 Note: ACPI CA is currently undergoing an in-depth and complete formal
8116 evaluation to test/verify the following areas. Other suggestions are
8117 welcome. This will result in an increase in the frequency of releases and
8118 the number of bug fixes in the next few months.
8119 - Functional tests for all ASL/AML operators
8120 - All implicit/explicit type conversions
8121 - Bit fields and operation regions
8122 - 64-bit math support and 32-bit-only "truncated" math support
8123 - Exceptional conditions, both compiler and interpreter
8124 - Dynamic object deletion and memory leaks
8125 - ACPI 3.0 support when implemented
8126 - External interfaces to the ACPI subsystem
8129 1) ACPI CA Core Subsystem:
8131 Fixed two alignment issues on 64-bit platforms - within debug statements
8133 AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the
8135 field within the non-aligned ACPI generic address structure.
8137 Fixed a problem in the Increment and Decrement operators where incorrect
8138 operand resolution could result in the inadvertent modification of the
8139 original integer when the integer is passed into another method as an
8140 argument and the arg is then incremented/decremented.
8142 Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-
8144 BCD number were truncated during conversion.
8146 Fixed a problem in the ToDecimal operator where the length of the
8148 string could be set incorrectly too long if the input operand was a Buffer
8151 Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte
8153 within a buffer would prematurely terminate a compare between buffer
8156 Added a check for string overflow (>200 characters as per the ACPI
8157 specification) during the Concatenate operator with two string operands.
8159 Code and Data Size: Current and previous core subsystem library sizes are
8160 shown below. These are the code and data sizes for the acpica.lib produced
8161 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8162 any ACPI driver or OSPM code. The debug version of the code includes the
8163 debug output trace mechanism and has a much larger code and data size.
8165 that these values will vary depending on the efficiency of the compiler
8167 the compiler options used during generation.
8170 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
8171 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
8173 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
8174 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
8178 2) iASL Compiler/Disassembler:
8180 Allow the use of the ObjectType operator on uninitialized Locals and Args
8181 (returns 0 as per the ACPI specification).
8183 Fixed a problem where the compiler would fault if there was a syntax error
8184 in the FieldName of all of the various CreateXXXField operators.
8186 Disallow the use of lower case letters within the EISAID macro, as per the
8187 ACPI specification. All EISAID strings must be of the form "UUUNNNN"
8189 U is an uppercase letter and N is a hex digit.
8192 ----------------------------------------
8193 06 October 2004. Summary of changes for version 20041006:
8195 1) ACPI CA Core Subsystem:
8197 Implemented support for the ACPI 3.0 Timer operator. This ASL function
8198 implements a 64-bit timer with 100 nanosecond granularity.
8200 Defined a new OSL interface, AcpiOsGetTimer. This interface is used to
8201 implement the ACPI 3.0 Timer operator. This allows the host OS to
8203 the timer with the best clock available. Also, it keeps the core subsystem
8204 out of the clock handling business, since the host OS (usually) performs
8207 Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write)
8208 functions use a 64-bit address which is part of the packed ACPI Generic
8209 Address Structure. Since the structure is non-aligned, the alignment
8211 are now used to extract the address to a local variable before use.
8213 Fixed a problem where the ToInteger operator assumed all input strings
8215 hexadecimal. The operator now handles both decimal strings and hex strings
8216 (prefixed with "0x").
8218 Fixed a problem where the string length in the string object created as a
8219 result of the internal ConvertToString procedure could be incorrect. This
8220 potentially affected all implicit conversions and also the ToDecimalString
8221 and ToHexString operators.
8223 Fixed two problems in the ToString operator. If the length parameter was
8224 zero, an incorrect string object was created and the value of the input
8225 length parameter was inadvertently changed from zero to Ones.
8227 Fixed a problem where the optional ResourceSource string in the
8229 resource macro was ignored.
8231 Simplified the interfaces to the internal division functions, reducing
8233 size and complexity.
8235 Code and Data Size: Current and previous core subsystem library sizes are
8236 shown below. These are the code and data sizes for the acpica.lib produced
8237 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8238 any ACPI driver or OSPM code. The debug version of the code includes the
8239 debug output trace mechanism and has a much larger code and data size.
8241 that these values will vary depending on the efficiency of the compiler
8243 the compiler options used during generation.
8246 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
8247 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
8249 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
8250 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
8253 2) iASL Compiler/Disassembler:
8255 Implemented support for the ACPI 3.0 Timer operator.
8257 Fixed a problem where the Default() operator was inadvertently ignored in
8259 Switch/Case block. This was a problem in the translation of the Switch
8260 statement to If...Else pairs.
8262 Added support to allow a standalone Return operator, with no parentheses
8266 Fixed a problem with code generation for the ElseIf operator where the
8267 translated Else...If parse tree was improperly constructed leading to the
8270 ----------------------------------------
8271 22 September 2004. Summary of changes for version 20040922:
8273 1) ACPI CA Core Subsystem:
8275 Fixed a problem with the implementation of the LNot() operator where
8277 was not returned for the TRUE case. Changed the code to return Ones
8279 of (!Arg) which was usually 1. This change affects iASL constant folding
8283 Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was not
8284 initialized properly -- Now zero the entire buffer in this case where the
8285 buffer already exists.
8287 Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32
8288 Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all
8289 related code considerably. This will require changes/updates to all OS
8290 interface layers (OSLs.)
8292 Implemented a new external interface, AcpiInstallExceptionHandler, to
8294 a system exception handler to be installed. This handler is invoked upon
8296 run-time exception that occurs during control method execution.
8298 Added support for the DSDT in AcpiTbFindTable. This allows the
8299 DataTableRegion() operator to access the local copy of the DSDT.
8301 Code and Data Size: Current and previous core subsystem library sizes are
8302 shown below. These are the code and data sizes for the acpica.lib produced
8303 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8304 any ACPI driver or OSPM code. The debug version of the code includes the
8305 debug output trace mechanism and has a much larger code and data size.
8307 that these values will vary depending on the efficiency of the compiler
8309 the compiler options used during generation.
8312 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
8313 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
8315 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
8316 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
8319 2) iASL Compiler/Disassembler:
8321 Fixed a problem with constant folding and the LNot operator. LNot was
8322 returning 1 in the TRUE case, not Ones as per the ACPI specification. This
8323 could result in the generation of an incorrect folded/reduced constant.
8325 End-Of-File is now allowed within a "//"-style comment. A parse error no
8326 longer occurs if such a comment is at the very end of the input ASL source
8329 Implemented the "-r" option to override the Revision in the table header.
8330 The initial use of this option will be to simplify the evaluation of the
8332 interpreter by allowing a single ASL source module to be compiled for
8334 32-bit or 64-bit integers.
8337 ----------------------------------------
8338 27 August 2004. Summary of changes for version 20040827:
8340 1) ACPI CA Core Subsystem:
8342 - Implemented support for implicit object conversion in the non-numeric
8343 logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, and
8344 LNotEqual.) Any combination of Integers/Strings/Buffers may now be used;
8345 the second operand is implicitly converted on the fly to match the type of
8346 the first operand. For example:
8348 LEqual (Source1, Source2)
8350 Source1 and Source2 must each evaluate to an integer, a string, or a
8352 The data type of Source1 dictates the required type of Source2. Source2 is
8353 implicitly converted if necessary to match the type of Source1.
8355 - Updated and corrected the behavior of the string conversion support.
8357 rules concerning conversion of buffers to strings (according to the ACPI
8358 specification) are as follows:
8360 ToDecimalString - explicit byte-wise conversion of buffer to string of
8361 decimal values (0-255) separated by commas. ToHexString - explicit byte-
8363 conversion of buffer to string of hex values (0-FF) separated by commas.
8364 ToString - explicit byte-wise conversion of buffer to string. Byte-by-
8366 copy with no transform except NULL terminated. Any other implicit buffer-
8368 string conversion - byte-wise conversion of buffer to string of hex values
8369 (0-FF) separated by spaces.
8371 - Fixed typo in definition of AcpiGbl_EnableInterpreterSlack.
8373 - Fixed a problem in AcpiNsGetPathnameLength where the returned length was
8374 one byte too short in the case of a node in the root scope. This could
8375 cause a fault during debug output.
8377 - Code and Data Size: Current and previous core subsystem library sizes
8379 shown below. These are the code and data sizes for the acpica.lib
8381 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8382 any ACPI driver or OSPM code. The debug version of the code includes the
8383 debug output trace mechanism and has a much larger code and data size.
8385 that these values will vary depending on the efficiency of the compiler
8387 the compiler options used during generation.
8390 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
8391 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
8393 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
8394 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
8397 2) iASL Compiler/Disassembler:
8399 - Fixed a Linux generation error.
8402 ----------------------------------------
8403 16 August 2004. Summary of changes for version 20040816:
8405 1) ACPI CA Core Subsystem:
8407 Designed and implemented support within the AML interpreter for the so-
8408 called "implicit return". This support returns the result of the last ASL
8409 operation within a control method, in the absence of an explicit Return()
8410 operator. A few machines depend on this behavior, even though it is not
8411 explicitly supported by the ASL language. It is optional support that can
8412 be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag.
8414 Removed support for the PCI_Config address space from the internal low
8416 hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This
8417 support was not used internally, and would not work correctly anyway
8419 the PCI bus number and segment number were not supported. There are
8420 separate interfaces for PCI configuration space access because of the
8424 Code and Data Size: Current and previous core subsystem library sizes are
8425 shown below. These are the code and data sizes for the acpica.lib
8427 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8428 any ACPI driver or OSPM code. The debug version of the code includes the
8429 debug output trace mechanism and has a much larger code and data size.
8431 that these values will vary depending on the efficiency of the compiler
8433 the compiler options used during generation.
8436 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
8437 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
8439 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
8440 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
8443 2) iASL Compiler/Disassembler:
8445 Fixed a problem where constants in ASL expressions at the root level (not
8446 within a control method) could be inadvertently truncated during code
8447 generation. This problem was introduced in the 20040715 release.
8450 ----------------------------------------
8451 15 July 2004. Summary of changes for version 20040715:
8453 1) ACPI CA Core Subsystem:
8455 Restructured the internal HW GPE interfaces to pass/track the current
8457 of interrupts (enabled/disabled) in order to avoid possible deadlock and
8458 increase flexibility of the interfaces.
8460 Implemented a "lexicographical compare" for String and Buffer objects
8462 the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual --
8463 as per further clarification to the ACPI specification. Behavior is
8465 to C library "strcmp".
8467 Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable
8468 external function. In the 32-bit non-debug case, the stack use has been
8469 reduced from 168 bytes to 32 bytes.
8471 Deployed a new run-time configuration flag,
8472 AcpiGbl_EnableInterpreterSlack,
8473 whose purpose is to allow the AML interpreter to forgive certain bad AML
8474 constructs. Default setting is FALSE.
8476 Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field
8478 support code. If enabled, it allows field access to go beyond the end of
8480 region definition if the field is within the region length rounded up to
8482 next access width boundary (a common coding error.)
8484 Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to
8485 ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also,
8487 symbols are lowercased by the latest version of the AcpiSrc tool.
8489 The prototypes for the PCI interfaces in acpiosxf.h have been updated to
8490 rename "Register" to simply "Reg" to prevent certain compilers from
8493 Code and Data Size: Current and previous core subsystem library sizes are
8494 shown below. These are the code and data sizes for the acpica.lib
8496 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8497 any ACPI driver or OSPM code. The debug version of the code includes the
8498 debug output trace mechanism and has a much larger code and data size.
8500 that these values will vary depending on the efficiency of the compiler
8502 the compiler options used during generation.
8505 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
8506 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
8508 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
8509 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
8512 2) iASL Compiler/Disassembler:
8514 Implemented full support for Package objects within the Case() operator.
8515 Note: The Break() operator is currently not supported within Case blocks
8516 (TermLists) as there is some question about backward compatibility with
8521 Fixed a problem where complex terms were not supported properly within the
8524 Eliminated extraneous warning for compiler-emitted reserved names of the
8525 form "_T_x". (Used in Switch/Case operators.)
8527 Eliminated optimization messages for "_T_x" objects and small constants
8528 within the DefinitionBlock operator.
8531 ----------------------------------------
8532 15 June 2004. Summary of changes for version 20040615:
8534 1) ACPI CA Core Subsystem:
8536 Implemented support for Buffer and String objects (as per ACPI 2.0) for
8538 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
8541 All directory names in the entire source package are lower case, as they
8542 were in earlier releases.
8544 Implemented "Disassemble" command in the AML debugger that will
8546 a single control method.
8548 Code and Data Size: Current and previous core subsystem library sizes are
8549 shown below. These are the code and data sizes for the acpica.lib
8551 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8552 any ACPI driver or OSPM code. The debug version of the code includes the
8553 debug output trace mechanism and has a much larger code and data size.
8555 that these values will vary depending on the efficiency of the compiler
8557 the compiler options used during generation.
8560 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
8561 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
8564 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
8565 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
8568 2) iASL Compiler/Disassembler:
8570 Implemented support for Buffer and String objects (as per ACPI 2.0) for
8572 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
8575 All directory names in the entire source package are lower case, as they
8576 were in earlier releases.
8578 Fixed a fault when using the -g or -d<nofilename> options if the FADT was
8581 Fixed an issue with the Windows version of the compiler where later
8583 of Windows place the FADT in the registry under the name "FADT" and not
8584 "FACP" as earlier versions did. This applies when using the -g or -
8585 d<nofilename> options. The compiler now looks for both strings as
8588 Fixed a problem with compiler namepath optimization where a namepath
8590 the Scope() operator could not be optimized if the namepath was a subpath
8592 the current scope path.
8594 ----------------------------------------
8595 27 May 2004. Summary of changes for version 20040527:
8597 1) ACPI CA Core Subsystem:
8599 Completed a new design and implementation for EBDA (Extended BIOS Data
8601 support in the RSDP scan code. The original code improperly scanned for
8603 EBDA by simply scanning from memory location 0 to 0x400. The correct
8605 is to first obtain the EBDA pointer from within the BIOS data area, then
8606 scan 1K of memory starting at the EBDA pointer. There appear to be few if
8607 any machines that place the RSDP in the EBDA, however.
8609 Integrated a fix for a possible fault during evaluation of BufferField
8610 arguments. Obsolete code that was causing the problem was removed.
8612 Found and fixed a problem in the Field Support Code where data could be
8613 corrupted on a bit field read that starts on an aligned boundary but does
8614 not end on an aligned boundary. Merged the read/write "datum length"
8615 calculation code into a common procedure.
8617 Rolled in a couple of changes to the FreeBSD-specific header.
8620 Code and Data Size: Current and previous core subsystem library sizes are
8621 shown below. These are the code and data sizes for the acpica.lib
8623 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8624 any ACPI driver or OSPM code. The debug version of the code includes the
8625 debug output trace mechanism and has a much larger code and data size.
8627 that these values will vary depending on the efficiency of the compiler
8629 the compiler options used during generation.
8632 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
8633 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
8635 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
8636 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
8639 2) iASL Compiler/Disassembler:
8641 Fixed a generation warning produced by some overly-verbose compilers for a
8644 ----------------------------------------
8645 14 May 2004. Summary of changes for version 20040514:
8647 1) ACPI CA Core Subsystem:
8649 Fixed a problem where hardware GPE enable bits sometimes not set properly
8650 during and after GPE method execution. Result of 04/27 changes.
8652 Removed extra "clear all GPEs" when sleeping/waking.
8654 Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single
8655 AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above
8657 the new AcpiEv* calls as appropriate.
8659 ACPI_OS_NAME was removed from the OS-specific headers. The default name
8661 now "Microsoft Windows NT" for maximum compatibility. However this can be
8662 changed by modifying the acconfig.h file.
8664 Allow a single invocation of AcpiInstallNotifyHandler for a handler that
8665 traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag.
8667 Run _INI methods on ThermalZone objects. This is against the ACPI
8668 specification, but there is apparently ASL code in the field that has
8670 _INI methods, and apparently "other" AML interpreters execute them.
8672 Performed a full 16/32/64 bit lint that resulted in some small changes.
8674 Added a sleep simulation command to the AML debugger to test sleep code.
8676 Code and Data Size: Current and previous core subsystem library sizes are
8677 shown below. These are the code and data sizes for the acpica.lib
8679 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8680 any ACPI driver or OSPM code. The debug version of the code includes the
8681 debug output trace mechanism and has a much larger code and data size.
8683 that these values will vary depending on the efficiency of the compiler
8685 the compiler options used during generation.
8688 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
8689 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
8691 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
8692 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
8694 ----------------------------------------
8695 27 April 2004. Summary of changes for version 20040427:
8697 1) ACPI CA Core Subsystem:
8699 Completed a major overhaul of the GPE handling within ACPI CA. There are
8700 now three types of GPEs: wake-only, runtime-only, and combination
8702 The only GPEs allowed to be combination wake/run are for button-style
8703 devices such as a control-method power button, control-method sleep
8705 or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are
8707 referenced by any _PRW methods are marked for "runtime" and hardware
8708 enabled. Any GPE that is referenced by a _PRW method is marked for "wake"
8709 (and disabled at runtime). However, at sleep time, only those GPEs that
8710 have been specifically enabled for wake via the AcpiEnableGpe interface
8712 actually be hardware enabled.
8714 A new external interface has been added, AcpiSetGpeType(), that is meant
8716 be used by device drivers to force a GPE to a particular type. It will be
8717 especially useful for the drivers for the button devices mentioned above.
8719 Completed restructuring of the ACPI CA initialization sequence so that
8720 default operation region handlers are installed before GPEs are
8722 and the _PRW methods are executed. This will prevent errors when the _PRW
8723 methods attempt to access system memory or I/O space.
8725 GPE enable/disable no longer reads the GPE enable register. We now keep
8727 enable info for runtime and wake separate and in the GPE_EVENT_INFO. We
8728 thus no longer depend on the hardware to maintain these bits.
8730 Always clear the wake status and fixed/GPE status bits before sleep, even
8733 Improved the AML debugger output for displaying the GPE blocks and their
8736 Added new strings for the _OSI method, of the form "Windows 2001 SPx"
8740 Fixed a problem where the physical address was incorrectly calculated when
8741 the Load() operator was used to directly load from an Operation Region
8743 loading from a Field object.) Also added check for minimum table length
8747 Fix for multiple mutex acquisition. Restore original thread SyncLevel on
8750 Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for
8751 consistency with the other fields returned.
8753 Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such
8754 structure for each GPE in the system, so the size of this structure is
8757 CPU stack requirement reduction: Cleaned up the method execution and
8759 evaluation paths so that now a parameter structure is passed, instead of
8760 copying the various method parameters over and over again.
8762 In evregion.c: Correctly exit and reenter the interpreter region if and
8763 only if dispatching an operation region request to a user-installed
8765 Do not exit/reenter when dispatching to a default handler (e.g., default
8766 system memory or I/O handlers)
8769 Notes for updating drivers for the new GPE support. The following changes
8770 must be made to ACPI-related device drivers that are attached to one or
8772 GPEs: (This information will be added to the ACPI CA Programmer
8775 1) AcpiInstallGpeHandler no longer automatically enables the GPE, you must
8776 explicitly call AcpiEnableGpe.
8777 2) There is a new interface called AcpiSetGpeType. This should be called
8778 before enabling the GPE. Also, this interface will automatically disable
8779 the GPE if it is currently enabled.
8780 3) AcpiEnableGpe no longer supports a GPE type flag.
8782 Specific drivers that must be changed:
8784 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED,
8785 AeGpeHandler, NULL);
8786 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME);
8787 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR);
8789 2) Button Drivers (Power, Lid, Sleep):
8790 Run _PRW method under parent device
8791 If _PRW exists: /* This is a control-method button */
8792 Extract GPE number and possibly GpeDevice
8793 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN);
8794 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR);
8796 For all other devices that have _PRWs, we automatically set the GPE type
8798 ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. This
8799 must be done on a selective basis, usually requiring some kind of user app
8800 to allow the user to pick the wake devices.
8803 Code and Data Size: Current and previous core subsystem library sizes are
8804 shown below. These are the code and data sizes for the acpica.lib
8806 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8807 any ACPI driver or OSPM code. The debug version of the code includes the
8808 debug output trace mechanism and has a much larger code and data size.
8810 that these values will vary depending on the efficiency of the compiler
8812 the compiler options used during generation.
8815 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
8816 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
8819 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
8820 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
8824 ----------------------------------------
8825 02 April 2004. Summary of changes for version 20040402:
8827 1) ACPI CA Core Subsystem:
8829 Fixed an interpreter problem where an indirect store through an ArgX
8830 parameter was incorrectly applying the "implicit conversion rules" during
8831 the store. From the ACPI specification: "If the target is a method local
8833 argument (LocalX or ArgX), no conversion is performed and the result is
8834 stored directly to the target". The new behavior is to disable implicit
8835 conversion during ALL stores to an ArgX.
8837 Changed the behavior of the _PRW method scan to ignore any and all errors
8838 returned by a given _PRW. This prevents the scan from aborting from the
8839 failure of any single _PRW.
8841 Moved the runtime configuration parameters from the global init procedure
8843 static variables in acglobal.h. This will allow the host to override the
8844 default values easily.
8846 Code and Data Size: Current and previous core subsystem library sizes are
8847 shown below. These are the code and data sizes for the acpica.lib
8849 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8850 any ACPI driver or OSPM code. The debug version of the code includes the
8851 debug output trace mechanism and has a much larger code and data size.
8853 that these values will vary depending on the efficiency of the compiler
8855 the compiler options used during generation.
8858 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
8859 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
8861 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
8862 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
8865 2) iASL Compiler/Disassembler:
8867 iASL now fully disassembles SSDTs. However, External() statements are not
8868 generated automatically for unresolved symbols at this time. This is a
8869 planned feature for future implementation.
8871 Fixed a scoping problem in the disassembler that occurs when the type of
8873 target of a Scope() operator is overridden. This problem caused an
8874 incorrectly nested internal namespace to be constructed.
8876 Any warnings or errors that are emitted during disassembly are now
8878 out automatically so that the resulting file can be recompiled without any
8881 ----------------------------------------
8882 26 March 2004. Summary of changes for version 20040326:
8884 1) ACPI CA Core Subsystem:
8886 Implemented support for "wake" GPEs via interaction between GPEs and the
8887 _PRW methods. Every GPE that is pointed to by one or more _PRWs is
8888 identified as a WAKE GPE and by default will no longer be enabled at
8889 runtime. Previously, we were blindly enabling all GPEs with a
8891 _Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway.
8893 believe this has been the cause of thousands of "spurious" GPEs on some
8896 This new GPE behavior is can be reverted to the original behavior (enable
8897 ALL GPEs at runtime) via a runtime flag.
8899 Fixed a problem where aliased control methods could not access objects
8900 properly. The proper scope within the namespace was not initialized
8901 (transferred to the target of the aliased method) before executing the
8904 Fixed a potential race condition on internal object deletion on the return
8905 object in AcpiEvaluateObject.
8907 Integrated a fix for resource descriptors where both _MEM and _MTP were
8908 being extracted instead of just _MEM. (i.e. bitmask was incorrectly too
8909 wide, 0x0F instead of 0x03.)
8911 Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, preventing
8913 fault in some cases.
8915 Updated Notify() values for debug statements in evmisc.c
8917 Return proper status from AcpiUtMutexInitialize, not just simply AE_OK.
8919 Code and Data Size: Current and previous core subsystem library sizes are
8920 shown below. These are the code and data sizes for the acpica.lib
8922 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8923 any ACPI driver or OSPM code. The debug version of the code includes the
8924 debug output trace mechanism and has a much larger code and data size.
8926 that these values will vary depending on the efficiency of the compiler
8928 the compiler options used during generation.
8932 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
8933 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
8935 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
8936 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
8938 ----------------------------------------
8939 11 March 2004. Summary of changes for version 20040311:
8941 1) ACPI CA Core Subsystem:
8943 Fixed a problem where errors occurring during the parse phase of control
8944 method execution did not abort cleanly. For example, objects created and
8945 installed in the namespace were not deleted. This caused all subsequent
8946 invocations of the method to return the AE_ALREADY_EXISTS exception.
8948 Implemented a mechanism to force a control method to "Serialized"
8950 if the method attempts to create namespace objects. (The root of the
8951 AE_ALREADY_EXISTS problem.)
8953 Implemented support for the predefined _OSI "internal" control method.
8954 Initial supported strings are "Linux", "Windows 2000", "Windows 2001", and
8955 "Windows 2001.1", and can be easily upgraded for new strings as necessary.
8956 This feature will allow "other" operating systems to execute the fully
8957 tested, "Windows" code path through the ASL code
8959 Global Lock Support: Now allows multiple acquires and releases with any
8960 internal thread. Removed concept of "owning thread" for this special
8963 Fixed two functions that were inappropriately declaring large objects on
8965 CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage
8967 method execution considerably.
8969 Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the
8970 S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT.
8972 Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs
8973 defined on the machine.
8975 Implemented two runtime options: One to force all control method
8977 to "Serialized" to mimic Windows behavior, another to disable _OSI support
8978 if it causes problems on a given machine.
8980 Code and Data Size: Current and previous core subsystem library sizes are
8981 shown below. These are the code and data sizes for the acpica.lib
8983 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
8984 any ACPI driver or OSPM code. The debug version of the code includes the
8985 debug output trace mechanism and has a much larger code and data size.
8987 that these values will vary depending on the efficiency of the compiler
8989 the compiler options used during generation.
8992 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
8993 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
8995 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
8996 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
8998 2) iASL Compiler/Disassembler:
9000 Fixed an array size problem for FreeBSD that would cause the compiler to
9003 ----------------------------------------
9004 20 February 2004. Summary of changes for version 20040220:
9007 1) ACPI CA Core Subsystem:
9009 Implemented execution of _SxD methods for Device objects in the
9010 GetObjectInfo interface.
9012 Fixed calls to _SST method to pass the correct arguments.
9014 Added a call to _SST on wake to restore to "working" state.
9016 Check for End-Of-Buffer failure case in the WalkResources interface.
9018 Integrated fix for 64-bit alignment issue in acglobal.h by moving two
9019 structures to the beginning of the file.
9021 After wake, clear GPE status register(s) before enabling GPEs.
9023 After wake, clear/enable power button. (Perhaps we should clear/enable
9025 fixed events upon wake.)
9027 Fixed a couple of possible memory leaks in the Namespace manager.
9029 Integrated latest acnetbsd.h file.
9031 ----------------------------------------
9032 11 February 2004. Summary of changes for version 20040211:
9035 1) ACPI CA Core Subsystem:
9037 Completed investigation and implementation of the call-by-reference
9038 mechanism for control method arguments.
9040 Fixed a problem where a store of an object into an indexed package could
9041 fail if the store occurs within a different method than the method that
9042 created the package.
9044 Fixed a problem where the ToDecimal operator could return incorrect
9047 Fixed a problem where the CopyObject operator could fail on some of the
9049 obscure objects (e.g., Reference objects.)
9051 Improved the output of the Debug object to display buffer, package, and
9054 Fixed a problem where constructs of the form "RefOf (ArgX)" did not return
9055 the expected result.
9057 Added permanent ACPI_REPORT_ERROR macros for all instances of the
9058 ACPI_AML_INTERNAL exception.
9060 Integrated latest version of acfreebsd.h
9062 ----------------------------------------
9063 16 January 2004. Summary of changes for version 20040116:
9065 The purpose of this release is primarily to update the copyright years in
9066 each module, thus causing a huge number of diffs. There are a few small
9067 functional changes, however.
9069 1) ACPI CA Core Subsystem:
9071 Improved error messages when there is a problem finding one or more of the
9072 required base ACPI tables
9074 Reintroduced the definition of APIC_HEADER in actbl.h
9076 Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h)
9078 Removed extraneous reference to NewObj in dsmthdat.c
9082 Fixed a problem introduced in December that disabled the correct
9084 of Resource Templates
9087 ----------------------------------------
9088 03 December 2003. Summary of changes for version 20031203:
9090 1) ACPI CA Core Subsystem:
9092 Changed the initialization of Operation Regions during subsystem
9093 init to perform two entire walks of the ACPI namespace; The first
9094 to initialize the regions themselves, the second to execute the
9095 _REG methods. This fixed some interdependencies across _REG
9096 methods found on some machines.
9098 Fixed a problem where a Store(Local0, Local1) could simply update
9099 the object reference count, and not create a new copy of the
9100 object if the Local1 is uninitialized.
9102 Implemented support for the _SST reserved method during sleep
9105 Implemented support to clear the SLP_TYP and SLP_EN bits when
9106 waking up, this is apparently required by some machines.
9108 When sleeping, clear the wake status only if SleepState is not S5.
9110 Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect
9111 pointer arithmetic advanced a string pointer too far.
9113 Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer
9114 could be returned if the requested table has not been loaded.
9116 Within the support for IRQ resources, restructured the handling of
9117 the active and edge/level bits.
9119 Fixed a few problems in AcpiPsxExecute() where memory could be
9120 leaked under certain error conditions.
9122 Improved error messages for the cases where the ACPI mode could
9125 Code and Data Size: Current and previous core subsystem library
9126 sizes are shown below. These are the code and data sizes for the
9127 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
9128 these values do not include any ACPI driver or OSPM code. The
9129 debug version of the code includes the debug output trace
9130 mechanism and has a much larger code and data size. Note that
9131 these values will vary depending on the efficiency of the compiler
9132 and the compiler options used during generation.
9134 Previous Release (20031029):
9135 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
9136 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
9138 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
9139 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
9141 2) iASL Compiler/Disassembler:
9143 Implemented a fix for the iASL disassembler where a bad index was
9144 generated. This was most noticeable on 64-bit platforms
9147 ----------------------------------------
9148 29 October 2003. Summary of changes for version 20031029:
9150 1) ACPI CA Core Subsystem:
9153 Fixed a problem where a level-triggered GPE with an associated
9154 _Lxx control method was incorrectly cleared twice.
9156 Fixed a problem with the Field support code where an access can
9157 occur beyond the end-of-region if the field is non-aligned but
9158 extends to the very end of the parent region (resulted in an
9159 AE_AML_REGION_LIMIT exception.)
9161 Fixed a problem with ACPI Fixed Events where an RT Clock handler
9162 would not get invoked on an RTC event. The RTC event bitmasks for
9163 the PM1 registers were not being initialized properly.
9165 Implemented support for executing _STA and _INI methods for
9166 Processor objects. Although this is currently not part of the
9167 ACPI specification, there is existing ASL code that depends on the
9168 init-time execution of these methods.
9170 Implemented and deployed a GetDescriptorName function to decode
9171 the various types of internal descriptors. Guards against null
9172 descriptors during debug output also.
9174 Implemented and deployed a GetNodeName function to extract the 4-
9175 character namespace node name. This function simplifies the debug
9176 and error output, as well as guarding against null pointers during
9179 Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to
9180 simplify the debug and error output of 64-bit integers. This
9181 macro replaces the HIDWORD and LODWORD macros for dumping these
9184 Updated the implementation of the Stall() operator to only call
9185 AcpiOsStall(), and also return an error if the operand is larger
9186 than 255. This preserves the required behavior of not
9187 relinquishing the processor, as would happen if AcpiOsSleep() was
9188 called for "long stalls".
9190 Constructs of the form "Store(LocalX,LocalX)" where LocalX is not
9191 initialized are now treated as NOOPs.
9193 Cleaned up a handful of warnings during 64-bit generation.
9195 Fixed a reported error where and incorrect GPE number was passed
9196 to the GPE dispatch handler. This value is only used for error
9197 output, however. Used this opportunity to clean up and streamline
9198 the GPE dispatch code.
9200 Code and Data Size: Current and previous core subsystem library
9201 sizes are shown below. These are the code and data sizes for the
9202 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
9203 these values do not include any ACPI driver or OSPM code. The
9205 debug version of the code includes the debug output trace
9206 mechanism and has a much larger code and data size. Note that
9207 these values will vary depending on the efficiency of the compiler
9208 and the compiler options used during generation.
9210 Previous Release (20031002):
9211 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
9212 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
9214 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
9215 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
9218 2) iASL Compiler/Disassembler:
9220 Updated the iASL compiler to return an error if the operand to the
9221 Stall() operator is larger than 255.
9224 ----------------------------------------
9225 02 October 2003. Summary of changes for version 20031002:
9228 1) ACPI CA Core Subsystem:
9230 Fixed a problem with Index Fields where the index was not
9231 incremented for fields that require multiple writes to the
9232 index/data registers (Fields that are wider than the data
9235 Fixed a problem with all Field objects where a write could go
9236 beyond the end-of-field if the field was larger than the access
9237 granularity and therefore required multiple writes to complete the
9238 request. An extra write beyond the end of the field could happen
9241 Fixed a problem with Index Fields where a BUFFER_OVERFLOW error
9242 would incorrectly be returned if the width of the Data Register
9243 was larger than the specified field access width.
9245 Completed fixes for LoadTable() and Unload() and verified their
9246 operation. Implemented full support for the "DdbHandle" object
9247 throughout the ACPI CA subsystem.
9249 Implemented full support for the MADT and ECDT tables in the ACPI
9250 CA header files. Even though these tables are not directly
9251 consumed by ACPI CA, the header definitions are useful for ACPI
9254 Integrated resource descriptor fixes posted to the Linux ACPI
9255 list. This included checks for minimum descriptor length, and
9256 support for trailing NULL strings within descriptors that have
9257 optional string elements.
9259 Code and Data Size: Current and previous core subsystem library
9260 sizes are shown below. These are the code and data sizes for the
9261 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
9262 these values do not include any ACPI driver or OSPM code. The
9263 debug version of the code includes the debug output trace
9264 mechanism and has a much larger code and data size. Note that
9265 these values will vary depending on the efficiency of the compiler
9266 and the compiler options used during generation.
9268 Previous Release (20030918):
9269 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
9270 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
9272 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
9273 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
9278 Implemented detection of non-ASCII characters within the input
9279 source ASL file. This catches attempts to compile binary (AML)
9280 files early in the compile, with an informative error message.
9282 Fixed a problem where the disassembler would fault if the output
9283 filename could not be generated or if the output file could not be
9286 ----------------------------------------
9287 18 September 2003. Summary of changes for version 20030918:
9290 1) ACPI CA Core Subsystem:
9292 Found and fixed a longstanding problem with the late execution of
9293 the various deferred AML opcodes (such as Operation Regions,
9294 Buffer Fields, Buffers, and Packages). If the name string
9295 specified for the name of the new object placed the object in a
9296 scope other than the current scope, the initialization/execution
9297 of the opcode failed. The solution to this problem was to
9298 implement a mechanism where the late execution of such opcodes
9299 does not attempt to lookup/create the name a second time in an
9300 incorrect scope. This fixes the "region size computed
9301 incorrectly" problem.
9303 Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a
9304 Global Lock AE_BAD_PARAMETER error.
9306 Fixed several 64-bit issues with prototypes, casting and data
9309 Removed duplicate prototype from acdisasm.h
9311 Fixed an issue involving EC Operation Region Detach (Shaohua Li)
9313 Code and Data Size: Current and previous core subsystem library
9314 sizes are shown below. These are the code and data sizes for the
9315 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
9316 these values do not include any ACPI driver or OSPM code. The
9317 debug version of the code includes the debug output trace
9318 mechanism and has a much larger code and data size. Note that
9319 these values will vary depending on the efficiency of the compiler
9320 and the compiler options used during generation.
9324 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
9325 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
9327 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
9328 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
9333 Fixed the AcpiOsSleep implementation in osunixxf.c to pass the
9334 correct sleep time in seconds.
9336 ----------------------------------------
9337 14 July 2003. Summary of changes for version 20030619:
9339 1) ACPI CA Core Subsystem:
9341 Parse SSDTs in order discovered, as opposed to reverse order
9344 Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas
9351 Dynamically allocate SDT list (suggested by Andi Kleen)
9353 proc function return value cleanups (Andi Kleen)
9355 Correctly handle NMI watchdog during long stalls (Andrew Morton)
9357 Make it so acpismp=force works (reported by Andrew Morton)
9360 ----------------------------------------
9361 19 June 2003. Summary of changes for version 20030619:
9363 1) ACPI CA Core Subsystem:
9365 Fix To/FromBCD, eliminating the need for an arch-specific #define.
9367 Do not acquire a semaphore in the S5 shutdown path.
9369 Fix ex_digits_needed for 0. (Takayoshi Kochi)
9371 Fix sleep/stall code reversal. (Andi Kleen)
9373 Revert a change having to do with control method calling
9378 acpiphp update (Takayoshi Kochi)
9380 Export acpi_disabled for sonypi (Stelian Pop)
9382 Mention acpismp=force in config help
9384 Re-add acpitable.c and acpismp=force. This improves backwards
9386 compatibility and also cleans up the code to a significant degree.
9388 Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge)
9390 ----------------------------------------
9391 22 May 2003. Summary of changes for version 20030522:
9393 1) ACPI CA Core Subsystem:
9395 Found and fixed a reported problem where an AE_NOT_FOUND error
9396 occurred occasionally during _BST evaluation. This turned out to
9397 be an Owner ID allocation issue where a called method did not get
9398 a new ID assigned to it. Eventually, (after 64k calls), the Owner
9399 ID UINT16 would wraparound so that the ID would be the same as the
9400 caller's and the called method would delete the caller's
9403 Implemented extended error reporting for control methods that are
9404 aborted due to a run-time exception. Output includes the exact
9405 AML instruction that caused the method abort, a dump of the method
9406 locals and arguments at the time of the abort, and a trace of all
9407 nested control method calls.
9409 Modified the interpreter to allow the creation of buffers of zero
9410 length from the AML code. Implemented new code to ensure that no
9411 attempt is made to actually allocate a memory buffer (of length
9412 zero) - instead, a simple buffer object with a NULL buffer pointer
9413 and length zero is created. A warning is no longer issued when
9414 the AML attempts to create a zero-length buffer.
9416 Implemented a workaround for the "leading asterisk issue" in
9417 _HIDs, _UIDs, and _CIDs in the AML interpreter. One leading
9418 asterisk is automatically removed if present in any HID, UID, or
9419 CID strings. The iASL compiler will still flag this asterisk as
9422 Implemented full support for _CID methods that return a package of
9423 multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface
9424 now additionally returns a device _CID list if present. This
9425 required a change to the external interface in order to pass an
9426 ACPI_BUFFER object as a parameter since the _CID list is of
9429 Fixed a problem with the new AE_SAME_HANDLER exception where
9430 handler initialization code did not know about this exception.
9432 Code and Data Size: Current and previous core subsystem library
9433 sizes are shown below. These are the code and data sizes for the
9434 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
9435 these values do not include any ACPI driver or OSPM code. The
9436 debug version of the code includes the debug output trace
9437 mechanism and has a much larger code and data size. Note that
9438 these values will vary depending on the efficiency of the compiler
9439 and the compiler options used during generation.
9441 Previous Release (20030509):
9442 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
9443 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
9445 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
9446 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
9451 Fixed a bug in which we would reinitialize the ACPI interrupt
9452 after it was already working, thus disabling all ACPI and the IRQs
9453 for any other device sharing the interrupt. (Thanks to Stian
9456 Toshiba driver update (John Belmonte)
9458 Return only 0 or 1 for our interrupt handler status (Andrew
9464 Fixed a reported problem where multiple (nested) ElseIf()
9465 statements were not handled correctly by the compiler, resulting
9466 in incorrect warnings and incorrect AML code. This was a problem
9467 in both the ASL parser and the code generator.
9472 Added changes to existing interfaces, new exception codes, and new
9473 text concerning reference count object management versus garbage
9476 ----------------------------------------
9477 09 May 2003. Summary of changes for version 20030509.
9480 1) ACPI CA Core Subsystem:
9482 Changed the subsystem initialization sequence to hold off
9483 installation of address space handlers until the hardware has been
9484 initialized and the system has entered ACPI mode. This is because
9485 the installation of space handlers can cause _REG methods to be
9486 run. Previously, the _REG methods could potentially be run before
9487 ACPI mode was enabled.
9489 Fixed some memory leak issues related to address space handler and
9490 notify handler installation. There were some problems with the
9491 reference count mechanism caused by the fact that the handler
9492 objects are shared across several namespace objects.
9494 Fixed a reported problem where reference counts within the
9495 namespace were not properly updated when named objects created by
9496 method execution were deleted.
9498 Fixed a reported problem where multiple SSDTs caused a deletion
9499 issue during subsystem termination. Restructured the table data
9500 structures to simplify the linked lists and the related code.
9502 Fixed a problem where the table ID associated with secondary
9503 tables (SSDTs) was not being propagated into the namespace objects
9504 created by those tables. This would only present a problem for
9505 tables that are unloaded at run-time, however.
9507 Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE
9508 type as the length parameter (instead of UINT32).
9510 Solved a long-standing problem where an ALREADY_EXISTS error
9511 appears on various systems. This problem could happen when there
9512 are multiple PCI_Config operation regions under a single PCI root
9513 bus. This doesn't happen very frequently, but there are some
9514 systems that do this in the ASL.
9516 Fixed a reported problem where the internal DeleteNode function
9517 was incorrectly handling the case where a namespace node was the
9518 first in the parent's child list, and had additional peers (not
9519 the only child, but first in the list of children.)
9521 Code and Data Size: Current core subsystem library sizes are shown
9522 below. These are the code and data sizes for the acpica.lib
9523 produced by the Microsoft Visual C++ 6.0 compiler, and these
9524 values do not include any ACPI driver or OSPM code. The debug
9525 version of the code includes the debug output trace mechanism and
9526 has a much larger code and data size. Note that these values will
9527 vary depending on the efficiency of the compiler and the compiler
9528 options used during generation.
9531 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
9532 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
9534 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
9535 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
9540 Allow ":" in OS override string (Ducrot Bruno)
9542 Kobject fix (Greg KH)
9545 3 iASL Compiler/Disassembler:
9547 Fixed a problem in the generation of the C source code files (AML
9548 is emitted in C source statements for BIOS inclusion) where the
9549 Ascii dump that appears within a C comment at the end of each line
9550 could cause a compile time error if the AML sequence happens to
9551 have an open comment or close comment sequence embedded.
9554 ----------------------------------------
9555 24 April 2003. Summary of changes for version 20030424.
9558 1) ACPI CA Core Subsystem:
9560 Support for big-endian systems has been implemented. Most of the
9561 support has been invisibly added behind big-endian versions of the
9564 Fixed a problem in AcpiHwDisableGpeBlock() and
9565 AcpiHwClearGpeBlock() where an incorrect offset was passed to the
9566 low level hardware write routine. The offset parameter was
9567 actually eliminated from the low level read/write routines because
9568 they had become obsolete.
9570 Fixed a problem where a handler object was deleted twice during
9571 the removal of a fixed event handler.
9576 A fix for SMP systems with link devices was contributed by
9580 (2.5) Return whether we handled the interrupt in our IRQ handler.
9581 (Linux ISRs no longer return void, so we can propagate the handler
9582 return value from the ACPI CA core back to the OS.)
9588 The ACPI CA Programmer Reference has been updated to reflect new
9589 interfaces and changes to existing interfaces.
9591 ----------------------------------------
9592 28 March 2003. Summary of changes for version 20030328.
9594 1) ACPI CA Core Subsystem:
9596 The GPE Block Device support has been completed. New interfaces
9597 are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event
9598 interfaces (enable, disable, clear, getstatus) have been split
9599 into separate interfaces for Fixed Events and General Purpose
9600 Events (GPEs) in order to support GPE Block Devices properly.
9602 Fixed a problem where the error message "Failed to acquire
9603 semaphore" would appear during operations on the embedded
9606 Code and Data Size: Current core subsystem library sizes are shown
9607 below. These are the code and data sizes for the acpica.lib
9608 produced by the Microsoft Visual C++ 6.0 compiler, and these
9609 values do not include any ACPI driver or OSPM code. The debug
9610 version of the code includes the debug output trace mechanism and
9611 has a much larger code and data size. Note that these values will
9612 vary depending on the efficiency of the compiler and the compiler
9613 options used during generation.
9616 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
9617 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
9619 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
9620 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
9623 ----------------------------------------
9624 28 February 2003. Summary of changes for version 20030228.
9627 1) ACPI CA Core Subsystem:
9629 The GPE handling and dispatch code has been completely overhauled
9630 in preparation for support of GPE Block Devices (ID ACPI0006).
9631 This affects internal data structures and code only; there should
9632 be no differences visible externally. One new file has been
9635 The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only
9636 fields that are used to determine the GPE block lengths. The
9637 REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address
9638 structures are ignored. This is per the ACPI specification but it
9639 isn't very clear. The full 256 Block 0/1 GPEs are now supported
9640 (the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128).
9642 In the SCI interrupt handler, removed the read of the PM1_CONTROL
9643 register to look at the SCI_EN bit. On some machines, this read
9644 causes an SMI event and greatly slows down SCI events. (This may
9645 in fact be the cause of slow battery status response on some
9648 Fixed a problem where a store of a NULL string to a package object
9649 could cause the premature deletion of the object. This was seen
9650 during execution of the battery _BIF method on some systems,
9651 resulting in no battery data being returned.
9653 Added AcpiWalkResources interface to simplify parsing of resource
9656 Code and Data Size: Current core subsystem library sizes are shown
9657 below. These are the code and data sizes for the acpica.lib
9658 produced by the Microsoft Visual C++ 6.0 compiler, and these
9659 values do not include any ACPI driver or OSPM code. The debug
9660 version of the code includes the debug output trace mechanism and
9661 has a much larger code and data size. Note that these values will
9662 vary depending on the efficiency of the compiler and the compiler
9663 options used during generation.
9666 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
9667 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
9669 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
9670 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
9675 S3 fixes (Ole Rohne)
9677 Update ACPI PHP driver with to use new acpi_walk_resource API
9680 Add S4BIOS support (Pavel Machek)
9682 Map in entire table before performing checksum (John Stultz)
9684 Expand the mem= cmdline to allow the specification of reserved and
9685 ACPI DATA blocks (Pavel Machek)
9687 Never use ACPI on VISWS
9689 Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez)
9691 Revert a change that allowed P_BLK lengths to be 4 or 5. This is
9692 causing us to think that some systems support C2 when they really
9695 Do not count processor objects for non-present CPUs (Thanks to
9701 Fixed a problem where ASL include files could not be found and
9704 Added support for the _PDC reserved name.
9707 ----------------------------------------
9708 22 January 2003. Summary of changes for version 20030122.
9711 1) ACPI CA Core Subsystem:
9713 Added a check for constructs of the form: Store (Local0, Local0)
9714 where Local0 is not initialized. Apparently, some BIOS
9715 programmers believe that this is a NOOP. Since this store doesn't
9716 do anything anyway, the new prototype behavior will ignore this
9717 error. This is a case where we can relax the strict checking in
9718 the interpreter in the name of compatibility.
9723 The AcpiSrc Source Conversion Utility has been released with the
9724 Linux package for the first time. This is the utility that is
9725 used to convert the ACPI CA base source code to the Linux version.
9727 (Both) Handle P_BLK lengths shorter than 6 more gracefully
9729 (Both) Move more headers to include/acpi, and delete an unused
9732 (Both) Move drivers/acpi/include directory to include/acpi
9734 (Both) Boot functions don't use cmdline, so don't pass it around
9736 (Both) Remove include of unused header (Adrian Bunk)
9738 (Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since
9740 former now also includes the latter, acpiphp.h only needs the one,
9743 (2.5) Make it possible to select method of bios restoring after S3
9744 resume. [=> no more ugly ifdefs] (Pavel Machek)
9746 (2.5) Make proc write interfaces work (Pavel Machek)
9748 (2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski)
9750 (2.5) Break out ACPI Perf code into its own module, under cpufreq
9753 (2.4) S4BIOS support (Ducrot Bruno)
9755 (2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio
9761 Added support to disassemble SSDT and PSDTs.
9763 Implemented support to obtain SSDTs from the Windows registry if
9767 ----------------------------------------
9768 09 January 2003. Summary of changes for version 20030109.
9770 1) ACPI CA Core Subsystem:
9772 Changed the behavior of the internal Buffer-to-String conversion
9773 function. The current ACPI specification states that the contents
9774 of the buffer are "converted to a string of two-character
9775 hexadecimal numbers, each separated by a space". Unfortunately,
9776 this definition is not backwards compatible with existing ACPI 1.0
9777 implementations (although the behavior was not defined in the ACPI
9778 1.0 specification). The new behavior simply copies data from the
9779 buffer to the string until a null character is found or the end of
9780 the buffer is reached. The new String object is always null
9781 terminated. This problem was seen during the generation of _BIF
9782 battery data where incorrect strings were returned for battery
9783 type, etc. This will also require an errata to the ACPI
9786 Renamed all instances of NATIVE_UINT and NATIVE_INT to
9787 ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively.
9789 Copyright in all module headers (both Linux and non-Linux) has be
9792 Code and Data Size: Current core subsystem library sizes are shown
9793 below. These are the code and data sizes for the acpica.lib
9794 produced by the Microsoft Visual C++ 6.0 compiler, and these
9795 values do not include any ACPI driver or OSPM code. The debug
9796 version of the code includes the debug output trace mechanism and
9797 has a much larger code and data size. Note that these values will
9798 vary depending on the efficiency of the compiler and the compiler
9799 options used during generation.
9802 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
9803 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
9805 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
9806 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
9811 Fixed an oops on module insertion/removal (Matthew Tippett)
9813 (2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante)
9815 (2.5) Replace pr_debug (Randy Dunlap)
9817 (2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski)
9819 (Both) Eliminate spawning of thread from timer callback, in favor
9822 (Both) Show Lid status in /proc (Zdenek OGAR Skalak)
9824 (Both) Added define for Fixed Function HW region (Matthew Wilcox)
9826 (Both) Add missing statics to button.c (Pavel Machek)
9828 Several changes have been made to the source code translation
9829 utility that generates the Linux Code in order to make the code
9832 All typedefs on structs and unions have been removed in keeping
9833 with the Linux coding style.
9835 Removed the non-Linux SourceSafe module revision number from each
9838 Completed major overhaul of symbols to be lowercased for linux.
9839 Doubled the number of symbols that are lowercased.
9841 Fixed a problem where identifiers within procedure headers and
9842 within quotes were not fully lower cased (they were left with a
9845 Some C macros whose only purpose is to allow the generation of 16-
9846 bit code are now completely removed in the Linux code, increasing
9847 readability and maintainability.
9849 ----------------------------------------
9851 12 December 2002. Summary of changes for version 20021212.
9854 1) ACPI CA Core Subsystem:
9856 Fixed a problem where the creation of a zero-length AML Buffer
9857 would cause a fault.
9859 Fixed a problem where a Buffer object that pointed to a static AML
9860 buffer (in an ACPI table) could inadvertently be deleted, causing
9863 Fixed a problem where a user buffer (passed in to the external
9864 ACPI CA interfaces) could be overwritten if the buffer was too
9865 small to complete the operation, causing memory corruption.
9867 Fixed a problem in the Buffer-to-String conversion code where a
9868 string of length one was always returned, regardless of the size
9869 of the input Buffer object.
9871 Removed the NATIVE_CHAR data type across the entire source due to
9872 lack of need and lack of consistent use.
9874 Code and Data Size: Current core subsystem library sizes are shown
9875 below. These are the code and data sizes for the acpica.lib
9876 produced by the Microsoft Visual C++ 6.0 compiler, and these
9877 values do not include any ACPI driver or OSPM code. The debug
9878 version of the code includes the debug output trace mechanism and
9879 has a much larger code and data size. Note that these values will
9880 vary depending on the efficiency of the compiler and the compiler
9881 options used during generation.
9884 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
9885 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
9887 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
9888 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
9891 ----------------------------------------
9892 05 December 2002. Summary of changes for version 20021205.
9894 1) ACPI CA Core Subsystem:
9896 Fixed a problem where a store to a String or Buffer object could
9897 cause corruption of the DSDT if the object type being stored was
9898 the same as the target object type and the length of the object
9899 being stored was equal to or smaller than the original (existing)
9900 target object. This was seen to cause corruption of battery _BIF
9901 buffers if the _BIF method modified the buffer on the fly.
9903 Fixed a problem where an internal error was generated if a control
9904 method invocation was used in an OperationRegion, Buffer, or
9905 Package declaration. This was caused by the deferred parsing of
9906 the control method and thus the deferred creation of the internal
9907 method object. The solution to this problem was to create the
9908 internal method object at the moment the method is encountered in
9909 the first pass - so that subsequent references to the method will
9910 able to obtain the required parameter count and thus properly
9911 parse the method invocation. This problem presented itself as an
9912 AE_AML_INTERNAL during the pass 1 parse phase during table load.
9914 Fixed a problem where the internal String object copy routine did
9915 not always allocate sufficient memory for the target String object
9916 and caused memory corruption. This problem was seen to cause
9917 "Allocation already present in list!" errors as memory allocation
9920 Implemented a new function for the evaluation of namespace objects
9921 that allows the specification of the allowable return object
9922 types. This simplifies a lot of code that checks for a return
9923 object of one or more specific objects returned from the
9924 evaluation (such as _STA, etc.) This may become and external
9925 function if it would be useful to ACPI-related drivers.
9927 Completed another round of prefixing #defines with "ACPI_" for
9930 Completed additional code restructuring to allow more modular
9931 linking for iASL compiler and AcpiExec. Several files were split
9932 creating new files. New files: nsparse.c dsinit.c evgpe.c
9934 Implemented an abort mechanism to terminate an executing control
9935 method via the AML debugger. This feature is useful for debugging
9936 control methods that depend (wait) for specific hardware
9939 Code and Data Size: Current core subsystem library sizes are shown
9940 below. These are the code and data sizes for the acpica.lib
9941 produced by the Microsoft Visual C++ 6.0 compiler, and these
9942 values do not include any ACPI driver or OSPM code. The debug
9943 version of the code includes the debug output trace mechanism and
9944 has a much larger code and data size. Note that these values will
9945 vary depending on the efficiency of the compiler and the compiler
9946 options used during generation.
9949 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
9950 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
9952 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
9953 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
9956 2) iASL Compiler/Disassembler
9958 Fixed a compiler code generation problem for "Interrupt" Resource
9959 Descriptors. If specified in the ASL, the optional "Resource
9960 Source Index" and "Resource Source" fields were not inserted into
9961 the correct location within the AML resource descriptor, creating
9962 an invalid descriptor.
9964 Fixed a disassembler problem for "Interrupt" resource descriptors.
9965 The optional "Resource Source Index" and "Resource Source" fields
9969 ----------------------------------------
9970 22 November 2002. Summary of changes for version 20021122.
9973 1) ACPI CA Core Subsystem:
9975 Fixed a reported problem where an object stored to a Method Local
9976 or Arg was not copied to a new object during the store - the
9977 object pointer was simply copied to the Local/Arg. This caused
9978 all subsequent operations on the Local/Arg to also affect the
9979 original source of the store operation.
9981 Fixed a problem where a store operation to a Method Local or Arg
9982 was not completed properly if the Local/Arg contained a reference
9983 (from RefOf) to a named field. The general-purpose store-to-
9984 namespace-node code is now used so that this case is handled
9987 Fixed a problem where the internal object copy routine would cause
9988 a protection fault if the object being copied was a Package and
9989 contained either 1) a NULL package element or 2) a nested sub-
9992 Fixed a problem with the GPE initialization that resulted from an
9993 ambiguity in the ACPI specification. One section of the
9994 specification states that both the address and length of the GPE
9995 block must be zero if the block is not supported. Another section
9996 implies that only the address need be zero if the block is not
9997 supported. The code has been changed so that both the address and
9998 the length must be non-zero to indicate a valid GPE block (i.e.,
9999 if either the address or the length is zero, the GPE block is
10002 Code and Data Size: Current core subsystem library sizes are shown
10003 below. These are the code and data sizes for the acpica.lib
10004 produced by the Microsoft Visual C++ 6.0 compiler, and these
10005 values do not include any ACPI driver or OSPM code. The debug
10006 version of the code includes the debug output trace mechanism and
10007 has a much larger code and data size. Note that these values will
10008 vary depending on the efficiency of the compiler and the compiler
10009 options used during generation.
10012 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
10013 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
10015 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
10016 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
10021 Cleaned up EC driver. Exported an external EC read/write
10022 interface. By going through this, other drivers (most notably
10023 sonypi) will be able to serialize access to the EC.
10026 3) iASL Compiler/Disassembler
10028 Implemented support to optionally generate include files for both
10029 ASM and C (the -i switch). This simplifies BIOS development by
10030 automatically creating include files that contain external
10031 declarations for the symbols that are created within the
10033 (optionally generated) ASM and C AML source files.
10036 ----------------------------------------
10037 15 November 2002. Summary of changes for version 20021115.
10039 1) ACPI CA Core Subsystem:
10041 Fixed a memory leak problem where an error during resolution of
10043 method arguments during a method invocation from another method
10044 failed to cleanup properly by deleting all successfully resolved
10047 Fixed a problem where the target of the Index() operator was not
10048 correctly constructed if the source object was a package. This
10049 problem has not been detected because the use of a target operand
10050 with Index() is very rare.
10052 Fixed a problem with the Index() operator where an attempt was
10053 made to delete the operand objects twice.
10055 Fixed a problem where an attempt was made to delete an operand
10056 twice during execution of the CondRefOf() operator if the target
10059 Implemented the first of perhaps several internal create object
10060 functions that create and initialize a specific object type. This
10061 consolidates duplicated code wherever the object is created, thus
10062 shrinking the size of the subsystem.
10064 Implemented improved debug/error messages for errors that occur
10065 during nested method invocations. All executing method pathnames
10066 are displayed (with the error) as the call stack is unwound - thus
10069 Fixed a problem introduced in the 10/02 release that caused
10070 premature deletion of a buffer object if a buffer was used as an
10071 ASL operand where an integer operand is required (Thus causing an
10072 implicit object conversion from Buffer to Integer.) The change in
10073 the 10/02 release was attempting to fix a memory leak (albeit
10076 Code and Data Size: Current core subsystem library sizes are shown
10077 below. These are the code and data sizes for the acpica.lib
10078 produced by the Microsoft Visual C++ 6.0 compiler, and these
10079 values do not include any ACPI driver or OSPM code. The debug
10080 version of the code includes the debug output trace mechanism and
10081 has a much larger code and data size. Note that these values will
10082 vary depending on the efficiency of the compiler and the compiler
10083 options used during generation.
10086 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
10087 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
10089 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
10090 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
10095 Changed the implementation of the ACPI semaphores to use down()
10096 instead of down_interruptable(). It is important that the
10097 execution of ACPI control methods not be interrupted by signals.
10098 Methods must run to completion, or the system may be left in an
10099 unknown/unstable state.
10101 Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set.
10105 3) iASL Compiler/Disassembler
10108 Changed the default location of output files. All output files
10109 are now placed in the current directory by default instead of in
10110 the directory of the source file. This change may affect some
10111 existing makefiles, but it brings the behavior of the compiler in
10112 line with other similar tools. The location of the output files
10113 can be overridden with the -p command line switch.
10116 ----------------------------------------
10117 11 November 2002. Summary of changes for version 20021111.
10120 0) ACPI Specification 2.0B is released and is now available at:
10121 http://www.acpi.info/index.html
10124 1) ACPI CA Core Subsystem:
10126 Implemented support for the ACPI 2.0 SMBus Operation Regions.
10127 This includes the early detection and handoff of the request to
10128 the SMBus region handler (avoiding all of the complex field
10129 support code), and support for the bidirectional return packet
10130 from an SMBus write operation. This paves the way for the
10131 development of SMBus drivers in each host operating system.
10133 Fixed a problem where the semaphore WAIT_FOREVER constant was
10134 defined as 32 bits, but must be 16 bits according to the ACPI
10135 specification. This had the side effect of causing ASL
10136 Mutex/Event timeouts even though the ASL code requested a wait
10137 forever. Changed all internal references to the ACPI timeout
10138 parameter to 16 bits to prevent future problems. Changed the name
10139 of WAIT_FOREVER to ACPI_WAIT_FOREVER.
10141 Code and Data Size: Current core subsystem library sizes are shown
10142 below. These are the code and data sizes for the acpica.lib
10143 produced by the Microsoft Visual C++ 6.0 compiler, and these
10144 values do not include any ACPI driver or OSPM code. The debug
10145 version of the code includes the debug output trace mechanism and
10146 has a much larger code and data size. Note that these values will
10147 vary depending on the efficiency of the compiler and the compiler
10148 options used during generation.
10151 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
10152 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
10154 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
10155 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
10160 Module loading/unloading fixes (John Cagle)
10163 3) iASL Compiler/Disassembler
10165 Added support for the SMBBlockProcessCall keyword (ACPI 2.0)
10167 Implemented support for the disassembly of all SMBus protocol
10168 keywords (SMBQuick, SMBWord, etc.)
10170 ----------------------------------------
10171 01 November 2002. Summary of changes for version 20021101.
10174 1) ACPI CA Core Subsystem:
10176 Fixed a problem where platforms that have a GPE1 block but no GPE0
10177 block were not handled correctly. This resulted in a "GPE
10178 overlap" error message. GPE0 is no longer required.
10180 Removed code added in the previous release that inserted nodes
10181 into the namespace in alphabetical order. This caused some side-
10182 effects on various machines. The root cause of the problem is
10183 still under investigation since in theory, the internal ordering
10184 of the namespace nodes should not matter.
10187 Enhanced error reporting for the case where a named object is not
10188 found during control method execution. The full ACPI namepath
10189 (name reference) of the object that was not found is displayed in
10192 Note: as a result of the overhaul of the namespace object types in
10193 the previous release, the namespace nodes for the predefined
10194 scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE
10195 instead of ACPI_TYPE_ANY. This simplifies the namespace
10196 management code but may affect code that walks the namespace tree
10197 looking for specific object types.
10199 Code and Data Size: Current core subsystem library sizes are shown
10200 below. These are the code and data sizes for the acpica.lib
10201 produced by the Microsoft Visual C++ 6.0 compiler, and these
10202 values do not include any ACPI driver or OSPM code. The debug
10203 version of the code includes the debug output trace mechanism and
10204 has a much larger code and data size. Note that these values will
10205 vary depending on the efficiency of the compiler and the compiler
10206 options used during generation.
10209 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
10210 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
10212 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
10213 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
10218 Fixed a problem introduced in the previous release where the
10219 Processor and Thermal objects were not recognized and installed in
10220 /proc. This was related to the scope type change described above.
10223 3) iASL Compiler/Disassembler
10225 Implemented the -g option to get all of the required ACPI tables
10226 from the registry and save them to files (Windows version of the
10227 compiler only.) The required tables are the FADT, FACS, and DSDT.
10229 Added ACPI table checksum validation during table disassembly in
10230 order to catch corrupted tables.
10233 ----------------------------------------
10234 22 October 2002. Summary of changes for version 20021022.
10236 1) ACPI CA Core Subsystem:
10238 Implemented a restriction on the Scope operator that the target
10239 must already exist in the namespace at the time the operator is
10240 encountered (during table load or method execution). In other
10241 words, forward references are not allowed and Scope() cannot
10242 create a new object. This changes the previous behavior where the
10243 interpreter would create the name if not found. This new behavior
10244 correctly enables the search-to-root algorithm during namespace
10245 lookup of the target name. Because of this upsearch, this fixes
10246 the known Compaq _SB_.OKEC problem and makes both the AML
10247 interpreter and iASL compiler compatible with other ACPI
10250 Completed a major overhaul of the internal ACPI object types for
10251 the ACPI Namespace and the associated operand objects. Many of
10252 these types had become obsolete with the introduction of the two-
10253 pass namespace load. This cleanup simplifies the code and makes
10254 the entire namespace load mechanism much clearer and easier to
10257 Improved debug output for tracking scope opening/closing to help
10258 diagnose scoping issues. The old scope name as well as the new
10259 scope name are displayed. Also improved error messages for
10260 problems with ASL Mutex objects and error messages for GPE
10263 Cleaned up the namespace dump code, removed obsolete code.
10265 All string output (for all namespace/object dumps) now uses the
10266 common ACPI string output procedure which handles escapes properly
10267 and does not emit non-printable characters.
10269 Fixed some issues with constants in the 64-bit version of the
10270 local C library (utclib.c)
10275 EC Driver: No longer attempts to acquire the Global Lock at
10279 3) iASL Compiler/Disassembler
10281 Implemented ACPI 2.0B grammar change that disallows all Type 1 and
10282 2 opcodes outside of a control method. This means that the
10283 "executable" operators (versus the "namespace" operators) cannot
10284 be used at the table level; they can only be used within a control
10287 Implemented the restriction on the Scope() operator where the
10288 target must already exist in the namespace at the time the
10289 operator is encountered (during ASL compilation). In other words,
10290 forward references are not allowed and Scope() cannot create a new
10291 object. This makes the iASL compiler compatible with other ACPI
10292 implementations and makes the Scope() implementation adhere to the
10293 ACPI specification.
10295 Fixed a problem where namepath optimization for the Alias operator
10296 was optimizing the wrong path (of the two namepaths.) This caused
10297 a "Missing alias link" error message.
10299 Fixed a problem where an "unknown reserved name" warning could be
10300 incorrectly generated for names like "_SB" when the trailing
10301 underscore is not used in the original ASL.
10303 Fixed a problem where the reserved name check did not handle
10304 NamePaths with multiple NameSegs correctly. The first nameseg of
10305 the NamePath was examined instead of the last NameSeg.
10308 ----------------------------------------
10310 02 October 2002. Summary of changes for this release.
10313 1) ACPI CA Core Subsystem version 20021002:
10315 Fixed a problem where a store/copy of a string to an existing
10316 string did not always set the string length properly in the String
10319 Fixed a reported problem with the ToString operator where the
10320 behavior was identical to the ToHexString operator instead of just
10321 simply converting a raw buffer to a string data type.
10323 Fixed a problem where CopyObject and the other "explicit"
10324 conversion operators were not updating the internal namespace node
10325 type as part of the store operation.
10327 Fixed a memory leak during implicit source operand conversion
10328 where the original object was not deleted if it was converted to a
10329 new object of a different type.
10331 Enhanced error messages for all problems associated with namespace
10332 lookups. Common procedure generates and prints the lookup name as
10333 well as the formatted status.
10335 Completed implementation of a new design for the Alias support
10336 within the namespace. The existing design did not handle the case
10337 where a new object was assigned to one of the two names due to the
10338 use of an explicit conversion operator, resulting in the two names
10339 pointing to two different objects. The new design simply points
10340 the Alias name to the original name node - not to the object.
10341 This results in a level of indirection that must be handled in the
10342 name resolution mechanism.
10344 Code and Data Size: Current core subsystem library sizes are shown
10345 below. These are the code and data sizes for the acpica.lib
10346 produced by the Microsoft Visual C++ 6.0 compiler, and these
10347 values do not include any ACPI driver or OSPM code. The debug
10348 version of the code includes the debug output trace mechanism and
10349 has a larger code and data size. Note that these values will vary
10350 depending on the efficiency of the compiler and the compiler
10351 options used during generation.
10354 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
10355 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
10357 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
10358 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
10363 Initialize thermal driver's timer before it is used. (Knut
10366 Allow handling negative celsius values. (Kochi Takayoshi)
10368 Fix thermal management and make trip points. R/W (Pavel Machek)
10370 Fix /proc/acpi/sleep. (P. Christeas)
10372 IA64 fixes. (David Mosberger)
10374 Fix reversed logic in blacklist code. (Sergio Monteiro Basto)
10376 Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik
10380 3) iASL Compiler/Disassembler
10382 Clarified some warning/error messages.
10385 ----------------------------------------
10386 18 September 2002. Summary of changes for this release.
10389 1) ACPI CA Core Subsystem version 20020918:
10391 Fixed a reported problem with reference chaining (via the Index()
10392 and RefOf() operators) in the ObjectType() and SizeOf() operators.
10393 The definition of these operators includes the dereferencing of
10394 all chained references to return information on the base object.
10396 Fixed a problem with stores to indexed package elements - the
10397 existing code would not complete the store if an "implicit
10398 conversion" was not performed. In other words, if the existing
10399 object (package element) was to be replaced completely, the code
10400 didn't handle this case.
10402 Relaxed typechecking on the ASL "Scope" operator to allow the
10403 target name to refer to an object of type Integer, String, or
10404 Buffer, in addition to the scoping object types (Device,
10405 predefined Scopes, Processor, PowerResource, and ThermalZone.)
10406 This allows existing AML code that has workarounds for a bug in
10407 Windows to function properly. A warning is issued, however. This
10408 affects both the AML interpreter and the iASL compiler. Below is
10409 an example of this type of ASL code:
10415 Fixed some reported problems with 64-bit integer support in the
10416 local implementation of C library functions (clib.c)
10421 Use ACPI fix map region instead of IOAPIC region, since it is
10422 undefined in non-SMP.
10424 Ensure that the SCI has the proper polarity and trigger, even on
10425 systems that do not have an interrupt override entry in the MADT.
10427 2.5 big driver reorganization (Pat Mochel)
10429 Use early table mapping code from acpitable.c (Andi Kleen)
10431 New blacklist entries (Andi Kleen)
10433 Blacklist improvements. Split blacklist code out into a separate
10434 file. Move checking the blacklist to very early. Previously, we
10435 would use ACPI tables, and then halfway through init, check the
10436 blacklist -- too late. Now, it's early enough to completely fall-
10440 3) iASL Compiler/Disassembler version 20020918:
10442 Fixed a problem where the typechecking code didn't know that an
10443 alias could point to a method. In other words, aliases were not
10444 being dereferenced during typechecking.
10447 ----------------------------------------
10448 29 August 2002. Summary of changes for this release.
10450 1) ACPI CA Core Subsystem Version 20020829:
10452 If the target of a Scope() operator already exists, it must be an
10453 object type that actually opens a scope -- such as a Device,
10454 Method, Scope, etc. This is a fatal runtime error. Similar error
10455 check has been added to the iASL compiler also.
10457 Tightened up the namespace load to disallow multiple names in the
10458 same scope. This previously was allowed if both objects were of
10459 the same type. (i.e., a lookup was the same as entering a new
10465 Ensure that the ACPI interrupt has the proper trigger and
10468 local_irq_disable is extraneous. (Matthew Wilcox)
10470 Make "acpi=off" actually do what it says, and not use the ACPI
10471 interpreter *or* the tables.
10473 Added arch-neutral support for parsing SLIT and SRAT tables (Kochi
10477 3) iASL Compiler/Disassembler Version 20020829:
10479 Implemented namepath optimization for name declarations. For
10480 example, a declaration like "Method (\_SB_.ABCD)" would get
10481 optimized to "Method (ABCD)" if the declaration is within the
10482 \_SB_ scope. This optimization is in addition to the named
10483 reference path optimization first released in the previous
10484 version. This would seem to complete all possible optimizations
10485 for namepaths within the ASL/AML.
10487 If the target of a Scope() operator already exists, it must be an
10488 object type that actually opens a scope -- such as a Device,
10489 Method, Scope, etc.
10491 Implemented a check and warning for unreachable code in the same
10492 block below a Return() statement.
10494 Fixed a problem where the listing file was not generated if the
10495 compiler aborted if the maximum error count was exceeded (200).
10497 Fixed a problem where the typechecking of method return values was
10498 broken. This includes the check for a return value when the
10499 method is invoked as a TermArg (a return value is expected.)
10501 Fixed a reported problem where EOF conditions during a quoted
10502 string or comment caused a fault.
10505 ----------------------------------------
10506 15 August 2002. Summary of changes for this release.
10508 1) ACPI CA Core Subsystem Version 20020815:
10510 Fixed a reported problem where a Store to a method argument that
10511 contains a reference did not perform the indirect store correctly.
10512 This problem was created during the conversion to the new
10513 reference object model - the indirect store to a method argument
10514 code was not updated to reflect the new model.
10516 Reworked the ACPI mode change code to better conform to ACPI 2.0,
10517 handle corner cases, and improve code legibility (Kochi Takayoshi)
10519 Fixed a problem with the pathname parsing for the carat (^)
10520 prefix. The heavy use of the carat operator by the new namepath
10521 optimization in the iASL compiler uncovered a problem with the AML
10522 interpreter handling of this prefix. In the case where one or
10523 more carats precede a single nameseg, the nameseg was treated as
10524 standalone and the search rule (to root) was inadvertently
10525 applied. This could cause both the iASL compiler and the
10526 interpreter to find the wrong object or to miss the error that
10527 should occur if the object does not exist at that exact pathname.
10529 Found and fixed the problem where the HP Pavilion DSDT would not
10530 load. This was a relatively minor tweak to the table loading code
10531 (a problem caused by the unexpected encounter with a method
10532 invocation not within a control method), but it does not solve the
10533 overall issue of the execution of AML code at the table level.
10534 This investigation is still ongoing.
10536 Code and Data Size: Current core subsystem library sizes are shown
10537 below. These are the code and data sizes for the acpica.lib
10538 produced by the Microsoft Visual C++ 6.0 compiler, and these
10539 values do not include any ACPI driver or OSPM code. The debug
10540 version of the code includes the debug output trace mechanism and
10541 has a larger code and data size. Note that these values will vary
10542 depending on the efficiency of the compiler and the compiler
10543 options used during generation.
10546 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
10547 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
10549 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
10550 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
10555 Remove redundant slab.h include (Brad Hards)
10557 Fix several bugs in thermal.c (Herbert Nachtnebel)
10559 Make CONFIG_ACPI_BOOT work properly (Pavel Machek)
10561 Change acpi_system_suspend to use updated irq functions (Pavel
10564 Export acpi_get_firmware_table (Matthew Wilcox)
10566 Use proper root proc entry for ACPI (Kochi Takayoshi)
10568 Fix early-boot table parsing (Bjorn Helgaas)
10571 3) iASL Compiler/Disassembler
10573 Reworked the compiler options to make them more consistent and to
10574 use two-letter options where appropriate. We were running out of
10575 sensible letters. This may break some makefiles, so check the
10576 current options list by invoking the compiler with no parameters.
10578 Completed the design and implementation of the ASL namepath
10579 optimization option for the compiler. This option optimizes all
10580 references to named objects to the shortest possible path. The
10581 first attempt tries to utilize a single nameseg (4 characters) and
10582 the "search-to-root" algorithm used by the interpreter. If that
10583 cannot be used (because either the name is not in the search path
10584 or there is a conflict with another object with the same name),
10585 the pathname is optimized using the carat prefix (usually a
10586 shorter string than specifying the entire path from the root.)
10588 Implemented support to obtain the DSDT from the Windows registry
10589 (when the disassembly option is specified with no input file).
10590 Added this code as the implementation for AcpiOsTableOverride in
10591 the Windows OSL. Migrated the 16-bit code (used in the AcpiDump
10592 utility) to scan memory for the DSDT to the AcpiOsTableOverride
10593 function in the DOS OSL to make the disassembler truly OS
10596 Implemented a new option to disassemble and compile in one step.
10597 When used without an input filename, this option will grab the
10598 DSDT from the local machine, disassemble it, and compile it in one
10601 Added a warning message for invalid escapes (a backslash followed
10602 by any character other than the allowable escapes). This catches
10603 the quoted string error "\_SB_" (which should be "\\_SB_" ).
10605 Also, there are numerous instances in the ACPI specification where
10608 Added a compiler option to disable all optimizations. This is
10609 basically the "compatibility mode" because by using this option,
10610 the AML code will come out exactly the same as other ASL
10613 Added error messages for incorrectly ordered dependent resource
10614 functions. This includes: missing EndDependentFn macro at end of
10615 dependent resource list, nested dependent function macros (both
10616 start and end), and missing StartDependentFn macro. These are
10617 common errors that should be caught at compile time.
10619 Implemented _OSI support for the disassembler and compiler. _OSI
10620 must be included in the namespace for proper disassembly (because
10621 the disassembler must know the number of arguments.)
10623 Added an "optimization" message type that is optional (off by
10624 default). This message is used for all optimizations - including
10625 constant folding, integer optimization, and namepath optimization.
10627 ----------------------------------------
10628 25 July 2002. Summary of changes for this release.
10631 1) ACPI CA Core Subsystem Version 20020725:
10633 The AML Disassembler has been enhanced to produce compilable ASL
10634 code and has been integrated into the iASL compiler (see below) as
10635 well as the single-step disassembly for the AML debugger and the
10636 disassembler for the AcpiDump utility. All ACPI 2.0A opcodes,
10637 resource templates and macros are fully supported. The
10638 disassembler has been tested on over 30 different AML files,
10639 producing identical AML when the resulting disassembled ASL file
10640 is recompiled with the same ASL compiler.
10642 Modified the Resource Manager to allow zero interrupts and zero
10643 dma channels during the GetCurrentResources call. This was
10644 causing problems on some platforms.
10646 Added the AcpiOsRedirectOutput interface to the OSL to simplify
10647 output redirection for the AcpiOsPrintf and AcpiOsVprintf
10650 Code and Data Size: Current core subsystem library sizes are shown
10651 below. These are the code and data sizes for the acpica.lib
10652 produced by the Microsoft Visual C++ 6.0 compiler, and these
10653 values do not include any ACPI driver or OSPM code. The debug
10654 version of the code includes the debug output trace mechanism and
10655 has a larger code and data size. Note that these values will vary
10656 depending on the efficiency of the compiler and the compiler
10657 options used during generation.
10660 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
10661 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
10663 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
10664 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
10669 Fixed a panic in the EC driver (Dominik Brodowski)
10671 Implemented checksum of the R/XSDT itself during Linux table scan
10677 The AML disassembler is integrated into the compiler. The "-d"
10678 option invokes the disassembler to completely disassemble an
10679 input AML file, producing as output a text ASL file with the
10680 extension ".dsl" (to avoid name collisions with existing .asl
10681 source files.) A future enhancement will allow the disassembler
10682 to obtain the BIOS DSDT from the registry under Windows.
10684 Fixed a problem with the VendorShort and VendorLong resource
10685 descriptors where an invalid AML sequence was created.
10687 Implemented a fix for BufferData term in the ASL parser. It was
10688 inadvertently defined twice, allowing invalid syntax to pass and
10689 causing reduction conflicts.
10691 Fixed a problem where the Ones opcode could get converted to a
10692 value of zero if "Ones" was used where a byte, word or dword value
10693 was expected. The 64-bit value is now truncated to the correct
10694 size with the correct value.
10698 ----------------------------------------
10699 02 July 2002. Summary of changes for this release.
10702 1) ACPI CA Core Subsystem Version 20020702:
10704 The Table Manager code has been restructured to add several new
10705 features. Tables that are not required by the core subsystem
10706 (other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer
10707 validated in any way and are returned from AcpiGetFirmwareTable if
10708 requested. The AcpiOsTableOverride interface is now called for
10709 each table that is loaded by the subsystem in order to allow the
10710 host to override any table it chooses. Previously, only the DSDT
10711 could be overridden. Added one new files, tbrsdt.c and
10714 Fixed a problem with the conversion of internal package objects to
10715 external objects (when a package is returned from a control
10716 method.) The return buffer length was set to zero instead of the
10717 proper length of the package object.
10719 Fixed a reported problem with the use of the RefOf and DeRefOf
10720 operators when passing reference arguments to control methods. A
10721 new type of Reference object is used internally for references
10722 produced by the RefOf operator.
10724 Added additional error messages in the Resource Manager to explain
10725 AE_BAD_DATA errors when they occur during resource parsing.
10727 Split the AcpiEnableSubsystem into two primitives to enable a
10728 finer granularity initialization sequence. These two calls should
10729 be called in this order: AcpiEnableSubsystem (flags),
10730 AcpiInitializeObjects (flags). The flags parameter remains the
10736 Updated the ACPI utilities module to understand the new style of
10737 fully resolved package objects that are now returned from the core
10738 subsystem. This eliminates errors of the form:
10740 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT]
10741 acpi_utils-0430 [145] acpi_evaluate_reference:
10742 Invalid element in package (not a device reference)
10744 The method evaluation utility uses the new buffer allocation
10745 scheme instead of calling AcpiEvaluate Object twice.
10747 Added support for ECDT. This allows the use of the Embedded
10749 Controller before the namespace has been fully initialized, which
10750 is necessary for ACPI 2.0 support, and for some laptops to
10751 initialize properly. (Laptops using ECDT are still rare, so only
10752 limited testing was performed of the added functionality.)
10754 Fixed memory leaks in the EC driver.
10756 Eliminated a brittle code structure in acpi_bus_init().
10758 Eliminated the acpi_evaluate() helper function in utils.c. It is
10759 no longer needed since acpi_evaluate_object can optionally
10760 allocate memory for the return object.
10762 Implemented fix for keyboard hang when getting battery readings on
10763 some systems (Stephen White)
10765 PCI IRQ routing update (Dominik Brodowski)
10767 Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC
10770 ----------------------------------------
10771 11 June 2002. Summary of changes for this release.
10774 1) ACPI CA Core Subsystem Version 20020611:
10776 Fixed a reported problem where constants such as Zero and One
10777 appearing within _PRT packages were not handled correctly within
10778 the resource manager code. Originally reported against the ASL
10779 compiler because the code generator now optimizes integers to
10780 their minimal AML representation (i.e. AML constants if possible.)
10781 The _PRT code now handles all AML constant opcodes correctly
10782 (Zero, One, Ones, Revision).
10784 Fixed a problem with the Concatenate operator in the AML
10785 interpreter where a buffer result object was incorrectly marked as
10786 not fully evaluated, causing a run-time error of AE_AML_INTERNAL.
10788 All package sub-objects are now fully resolved before they are
10789 returned from the external ACPI interfaces. This means that name
10790 strings are resolved to object handles, and constant operators
10791 (Zero, One, Ones, Revision) are resolved to Integers.
10793 Implemented immediate resolution of the AML Constant opcodes
10794 (Zero, One, Ones, Revision) to Integer objects upon detection
10795 within the AML stream. This has simplified and reduced the
10796 generated code size of the subsystem by eliminating about 10
10797 switch statements for these constants (which previously were
10798 contained in Reference objects.) The complicating issues are that
10799 the Zero opcode is used as a "placeholder" for unspecified
10800 optional target operands and stores to constants are defined to be
10803 Code and Data Size: Current core subsystem library sizes are shown
10804 below. These are the code and data sizes for the acpica.lib
10805 produced by the Microsoft Visual C++ 6.0 compiler, and these
10806 values do not include any ACPI driver or OSPM code. The debug
10807 version of the code includes the debug output trace mechanism and
10808 has a larger code and data size. Note that these values will vary
10809 depending on the efficiency of the compiler and the compiler
10810 options used during generation.
10813 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
10814 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
10816 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
10817 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
10823 Added preliminary support for obtaining _TRA data for PCI root
10824 bridges (Bjorn Helgaas).
10827 3) iASL Compiler Version X2046:
10829 Fixed a problem where the "_DDN" reserved name was defined to be a
10830 control method with one argument. There are no arguments, and
10831 _DDN does not have to be a control method.
10833 Fixed a problem with the Linux version of the compiler where the
10834 source lines printed with error messages were the wrong lines.
10835 This turned out to be the "LF versus CR/LF" difference between
10836 Windows and Unix. This appears to be the longstanding issue
10837 concerning listing output and error messages.
10839 Fixed a problem with the Linux version of compiler where opcode
10840 names within error messages were wrong. This was caused by a
10841 slight difference in the output of the Flex tool on Linux versus
10844 Fixed a problem with the Linux compiler where the hex output files
10845 contained some garbage data caused by an internal buffer overrun.
10848 ----------------------------------------
10849 17 May 2002. Summary of changes for this release.
10852 1) ACPI CA Core Subsystem Version 20020517:
10854 Implemented a workaround to an BIOS bug discovered on the HP
10855 OmniBook where the FADT revision number and the table size are
10856 inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new
10857 behavior is to fallback to using only the ACPI 1.0 fields of the
10858 FADT if the table is too small to be a ACPI 2.0 table as claimed
10859 by the revision number. Although this is a BIOS bug, this is a
10860 case where the workaround is simple enough and with no side
10861 effects, so it seemed prudent to add it. A warning message is
10864 Implemented minimum size checks for the fixed-length ACPI tables -
10865 - the FADT and FACS, as well as consistency checks between the
10866 revision number and the table size.
10868 Fixed a reported problem in the table override support where the
10869 new table pointer was incorrectly treated as a physical address
10870 instead of a logical address.
10872 Eliminated the use of the AE_AML_ERROR exception and replaced it
10873 with more descriptive codes.
10875 Fixed a problem where an exception would occur if an ASL Field was
10876 defined with no named Field Units underneath it (used by some
10879 Code and Data Size: Current core subsystem library sizes are shown
10880 below. These are the code and data sizes for the acpica.lib
10881 produced by the Microsoft Visual C++ 6.0 compiler, and these
10882 values do not include any ACPI driver or OSPM code. The debug
10883 version of the code includes the debug output trace mechanism and
10884 has a larger code and data size. Note that these values will vary
10885 depending on the efficiency of the compiler and the compiler
10886 options used during generation.
10889 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
10890 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
10892 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
10893 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
10899 Much work done on ACPI init (MADT and PCI IRQ routing support).
10900 (Paul D. and Dominik Brodowski)
10902 Fix PCI IRQ-related panic on boot (Sam Revitch)
10904 Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno)
10906 Fix "MHz" typo (Dominik Brodowski)
10908 Fix RTC year 2000 issue (Dominik Brodowski)
10910 Preclude multiple button proc entries (Eric Brunet)
10912 Moved arch-specific code out of include/platform/aclinux.h
10914 3) iASL Compiler Version X2044:
10916 Implemented error checking for the string used in the EISAID macro
10917 (Usually used in the definition of the _HID object.) The code now
10918 strictly enforces the PnP format - exactly 7 characters, 3
10919 uppercase letters and 4 hex digits.
10921 If a raw string is used in the definition of the _HID object
10922 (instead of the EISAID macro), the string must contain all
10923 alphanumeric characters (e.g., "*PNP0011" is not allowed because
10926 Implemented checking for invalid use of ACPI reserved names for
10927 most of the name creation operators (Name, Device, Event, Mutex,
10928 OperationRegion, PowerResource, Processor, and ThermalZone.)
10929 Previously, this check was only performed for control methods.
10931 Implemented an additional check on the Name operator to emit an
10932 error if a reserved name that must be implemented in ASL as a
10933 control method is used. We know that a reserved name must be a
10934 method if it is defined with input arguments.
10936 The warning emitted when a namespace object reference is not found
10937 during the cross reference phase has been changed into an error.
10938 The "External" directive should be used for names defined in other
10942 4) Tools and Utilities
10944 The 16-bit tools (adump16 and aexec16) have been regenerated and
10947 Fixed a problem with the output of both acpidump and adump16 where
10948 the indentation of closing parentheses and brackets was not
10950 aligned properly with the parent block.
10953 ----------------------------------------
10954 03 May 2002. Summary of changes for this release.
10957 1) ACPI CA Core Subsystem Version 20020503:
10959 Added support a new OSL interface that allows the host operating
10961 system software to override the DSDT found in the firmware -
10962 AcpiOsTableOverride. With this interface, the OSL can examine the
10963 version of the firmware DSDT and replace it with a different one
10966 Added new external interfaces for accessing ACPI registers from
10967 device drivers and other system software - AcpiGetRegister and
10968 AcpiSetRegister. This was simply an externalization of the
10969 existing AcpiHwBitRegister interfaces.
10971 Fixed a regression introduced in the previous build where the
10972 ASL/AML CreateField operator always returned an error,
10973 "destination must be a NS Node".
10975 Extended the maximum time (before failure) to successfully enable
10976 ACPI mode to 3 seconds.
10978 Code and Data Size: Current core subsystem library sizes are shown
10979 below. These are the code and data sizes for the acpica.lib
10980 produced by the Microsoft Visual C++ 6.0 compiler, and these
10981 values do not include any ACPI driver or OSPM code. The debug
10982 version of the code includes the debug output trace mechanism and
10983 has a larger code and data size. Note that these values will vary
10984 depending on the efficiency of the compiler and the compiler
10985 options used during generation.
10988 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
10989 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
10991 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
10992 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
10997 Enhanced ACPI init code for SMP. We are now fully MPS and $PIR-
10998 free. While 3 out of 4 of our in-house systems work fine, the last
10999 one still hangs when testing the LAPIC timer.
11001 Renamed many files in 2.5 kernel release to omit "acpi_" from the
11004 Added warning on boot for Presario 711FR.
11006 Sleep improvements (Pavel Machek)
11008 ACPI can now be built without CONFIG_PCI enabled.
11010 IA64: Fixed memory map functions (JI Lee)
11013 3) iASL Compiler Version X2043:
11015 Added support to allow the compiler to be integrated into the MS
11016 VC++ development environment for one-button compilation of single
11017 files or entire projects -- with error-to-source-line mapping.
11019 Implemented support for compile-time constant folding for the
11020 Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0
11021 specification. This allows the ASL writer to use expressions
11022 instead of Integer/Buffer/String constants in terms that must
11023 evaluate to constants at compile time and will also simplify the
11024 emitted AML in any such sub-expressions that can be folded
11025 (evaluated at compile-time.) This increases the size of the
11026 compiler significantly because a portion of the ACPI CA AML
11027 interpreter is included within the compiler in order to pre-
11028 evaluate constant expressions.
11031 Fixed a problem with the "Unicode" ASL macro that caused the
11032 compiler to fault. (This macro is used in conjunction with the
11033 _STR reserved name.)
11035 Implemented an AML opcode optimization to use the Zero, One, and
11036 Ones opcodes where possible to further reduce the size of integer
11037 constants and thus reduce the overall size of the generated AML
11040 Implemented error checking for new reserved terms for ACPI version
11043 Implemented the -qr option to display the current list of ACPI
11044 reserved names known to the compiler.
11046 Implemented the -qc option to display the current list of ASL
11047 operators that are allowed within constant expressions and can
11048 therefore be folded at compile time if the operands are constants.
11053 Updated the Programmer's Reference for new interfaces, data types,
11054 and memory allocation model options.
11056 Updated the iASL Compiler User Reference to apply new format and
11057 add information about new features and options.
11059 ----------------------------------------
11060 19 April 2002. Summary of changes for this release.
11062 1) ACPI CA Core Subsystem Version 20020419:
11064 The source code base for the Core Subsystem has been completely
11065 cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit
11066 versions. The Lint option files used are included in the
11067 /acpi/generate/lint directory.
11069 Implemented enhanced status/error checking across the entire
11070 Hardware manager subsystem. Any hardware errors (reported from
11071 the OSL) are now bubbled up and will abort a running control
11075 Fixed a problem where the per-ACPI-table integer width (32 or 64)
11076 was stored only with control method nodes, causing a fault when
11077 non-control method code was executed during table loading. The
11078 solution implemented uses a global variable to indicate table
11079 width across the entire ACPI subsystem. Therefore, ACPI CA does
11080 not support mixed integer widths across different ACPI tables
11083 Fixed a problem where NULL extended fields (X fields) in an ACPI
11084 2.0 ACPI FADT caused the table load to fail. Although the
11085 existing ACPI specification is a bit fuzzy on this topic, the new
11086 behavior is to fall back on a ACPI 1.0 field if the corresponding
11087 ACPI 2.0 X field is zero (even though the table revision indicates
11088 a full ACPI 2.0 table.) The ACPI specification will be updated to
11089 clarify this issue.
11091 Fixed a problem with the SystemMemory operation region handler
11092 where memory was always accessed byte-wise even if the AML-
11093 specified access width was larger than a byte. This caused
11094 problems on systems with memory-mapped I/O. Memory is now
11095 accessed with the width specified. On systems that do not support
11096 non-aligned transfers, a check is made to guarantee proper address
11097 alignment before proceeding in order to avoid an AML-caused
11098 alignment fault within the kernel.
11101 Fixed a problem with the ExtendedIrq resource where only one byte
11102 of the 4-byte Irq field was extracted.
11104 Fixed the AcpiExDigitsNeeded() procedure to support _UID. This
11105 function was out of date and required a rewrite.
11107 Code and Data Size: Current core subsystem library sizes are shown
11108 below. These are the code and data sizes for the acpica.lib
11109 produced by the Microsoft Visual C++ 6.0 compiler, and these
11110 values do not include any ACPI driver or OSPM code. The debug
11111 version of the code includes the debug output trace mechanism and
11112 has a larger code and data size. Note that these values will vary
11113 depending on the efficiency of the compiler and the compiler
11114 options used during generation.
11117 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
11118 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
11120 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
11121 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
11126 PCI IRQ routing fixes (Dominik Brodowski)
11129 3) iASL Compiler Version X2042:
11131 Implemented an additional compile-time error check for a field
11132 unit whose size + minimum access width would cause a run-time
11133 access beyond the end-of-region. Previously, only the field size
11134 itself was checked.
11136 The Core subsystem and iASL compiler now share a common parse
11137 object in preparation for compile-time evaluation of the type
11138 3/4/5 ASL operators.
11141 ----------------------------------------
11142 Summary of changes for this release: 03_29_02
11144 1) ACPI CA Core Subsystem Version 20020329:
11146 Implemented support for late evaluation of TermArg operands to
11147 Buffer and Package objects. This allows complex expressions to be
11148 used in the declarations of these object types.
11150 Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI
11151 1.0, if the field was larger than 32 bits, it was returned as a
11152 buffer - otherwise it was returned as an integer. In ACPI 2.0,
11153 the field is returned as a buffer only if the field is larger than
11154 64 bits. The TableRevision is now considered when making this
11155 conversion to avoid incompatibility with existing ASL code.
11157 Implemented logical addressing for AcpiOsGetRootPointer. This
11158 allows an RSDP with either a logical or physical address. With
11159 this support, the host OS can now override all ACPI tables with
11160 one logical RSDP. Includes implementation of "typed" pointer
11161 support to allow a common data type for both physical and logical
11162 pointers internally. This required a change to the
11163 AcpiOsGetRootPointer interface.
11165 Implemented the use of ACPI 2.0 Generic Address Structures for all
11166 GPE, Fixed Event, and PM Timer I/O. This allows the use of memory
11167 mapped I/O for these ACPI features.
11169 Initialization now ignores not only non-required tables (All
11170 tables other than the FADT, FACS, DSDT, and SSDTs), but also does
11171 not validate the table headers of unrecognized tables.
11173 Fixed a problem where a notify handler could only be
11174 installed/removed on an object of type Device. All "notify"
11176 objects are now supported -- Devices, Processor, Power, and
11179 Removed most verbosity from the ACPI_DB_INFO debug level. Only
11180 critical information is returned when this debug level is enabled.
11182 Code and Data Size: Current core subsystem library sizes are shown
11183 below. These are the code and data sizes for the acpica.lib
11184 produced by the Microsoft Visual C++ 6.0 compiler, and these
11185 values do not include any ACPI driver or OSPM code. The debug
11186 version of the code includes the debug output trace mechanism and
11187 has a larger code and data size. Note that these values will vary
11188 depending on the efficiency of the compiler and the compiler
11189 options used during generation.
11192 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
11193 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
11195 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
11196 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
11201 The processor driver (acpi_processor.c) now fully supports ACPI
11202 2.0-based processor performance control (e.g. Intel(R)
11203 SpeedStep(TM) technology) Note that older laptops that only have
11204 the Intel "applet" interface are not supported through this. The
11205 'limit' and 'performance' interface (/proc) are fully functional.
11206 [Note that basic policy for controlling performance state
11207 transitions will be included in the next version of ospmd.] The
11208 idle handler was modified to more aggressively use C2, and PIIX4
11209 errata handling underwent a complete overhaul (big thanks to
11210 Dominik Brodowski).
11212 Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR-
11213 based devices in the ACPI namespace are now dynamically bound
11214 (associated) with their PCI counterparts (e.g. PCI1->01:00.0).
11215 This allows, among other things, ACPI to resolve bus numbers for
11216 subordinate PCI bridges.
11218 Enhanced PCI IRQ routing to get the proper bus number for _PRT
11219 entries defined underneath PCI bridges.
11221 Added IBM 600E to bad bios list due to invalid _ADR value for
11222 PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing.
11224 In the process of adding full MADT support (e.g. IOAPIC) for IA32
11225 (acpi.c, mpparse.c) -- stay tuned.
11227 Added back visual differentiation between fixed-feature and
11228 control-method buttons in dmesg. Buttons are also subtyped (e.g.
11229 button/power/PWRF) to simplify button identification.
11231 We no longer use -Wno-unused when compiling debug. Please ignore
11232 any "_THIS_MODULE defined but not used" messages.
11234 Can now shut down the system using "magic sysrq" key.
11237 3) iASL Compiler version 2041:
11239 Fixed a problem where conversion errors for hex/octal/decimal
11240 constants were not reported.
11242 Implemented a fix for the General Register template Address field.
11243 This field was 8 bits when it should be 64.
11245 Fixed a problem where errors/warnings were no longer being emitted
11246 within the listing output file.
11248 Implemented the ACPI 2.0A restriction on ACPI Table Signatures to
11249 exactly 4 characters, alphanumeric only.
11254 ----------------------------------------
11255 Summary of changes for this release: 03_08_02
11258 1) ACPI CA Core Subsystem Version 20020308:
11260 Fixed a problem with AML Fields where the use of the "AccessAny"
11261 keyword could cause an interpreter error due to attempting to read
11262 or write beyond the end of the parent Operation Region.
11264 Fixed a problem in the SystemMemory Operation Region handler where
11265 an attempt was made to map memory beyond the end of the region.
11266 This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY"
11267 errors on some Linux systems.
11269 Fixed a problem where the interpreter/namespace "search to root"
11270 algorithm was not functioning for some object types. Relaxed the
11271 internal restriction on the search to allow upsearches for all
11272 external object types as well as most internal types.
11277 We now use safe_halt() macro versus individual calls to sti | hlt.
11279 Writing to the processor limit interface should now work. "echo 1"
11280 will increase the limit, 2 will decrease, and 0 will reset to the
11287 Fixed segfault on Linux version.
11290 ----------------------------------------
11291 Summary of changes for this release: 02_25_02
11293 1) ACPI CA Core Subsystem:
11296 Fixed a problem where the GPE bit masks were not initialized
11297 properly, causing erratic GPE behavior.
11299 Implemented limited support for multiple calling conventions. The
11300 code can be generated with either the VPL (variable parameter
11301 list, or "C") convention, or the FPL (fixed parameter list, or
11302 "Pascal") convention. The core subsystem is about 3.4% smaller
11303 when generated with FPL.
11308 Re-add some /proc/acpi/event functionality that was lost during
11311 Resolved issue with /proc events for fixed-feature buttons showing
11312 up as the system device.
11314 Fixed checks on C2/C3 latencies to be inclusive of maximum values.
11316 Replaced AE_ERRORs in acpi_osl.c with more specific error codes.
11318 Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi"
11320 Fixed limit interface & usage to fix bugs with passive cooling
11323 Restructured PRT support.
11326 ----------------------------------------
11327 Summary of changes for this label: 02_14_02
11330 1) ACPI CA Core Subsystem:
11332 Implemented support in AcpiLoadTable to allow loading of FACS and
11335 Suport for the now-obsolete interim 0.71 64-bit ACPI tables has
11336 been removed. All 64-bit platforms should be migrated to the ACPI
11337 2.0 tables. The actbl71.h header has been removed from the source
11340 All C macros defined within the subsystem have been prefixed with
11341 "ACPI_" to avoid collision with other system include files.
11343 Removed the return value for the two AcpiOsPrint interfaces, since
11344 it is never used and causes lint warnings for ignoring the return
11347 Added error checking to all internal mutex acquire and release
11348 calls. Although a failure from one of these interfaces is
11349 probably a fatal system error, these checks will cause the
11350 immediate abort of the currently executing method or interface.
11352 Fixed a problem where the AcpiSetCurrentResources interface could
11353 fault. This was a side effect of the deployment of the new memory
11356 Fixed a couple of problems with the Global Lock support introduced
11357 in the last major build. The "common" (1.0/2.0) internal FACS was
11358 being overwritten with the FACS signature and clobbering the
11359 Global Lock pointer. Also, the actual firmware FACS was being
11360 unmapped after construction of the "common" FACS, preventing
11361 access to the actual Global Lock field within it. The "common"
11362 internal FACS is no longer installed as an actual ACPI table; it
11363 is used simply as a global.
11365 Code and Data Size: Current core subsystem library sizes are shown
11366 below. These are the code and data sizes for the acpica.lib
11367 produced by the Microsoft Visual C++ 6.0 compiler, and these
11368 values do not include any ACPI driver or OSPM code. The debug
11369 version of the code includes the debug output trace mechanism and
11370 has a larger code and data size. Note that these values will vary
11371 depending on the efficiency of the compiler and the compiler
11372 options used during generation.
11374 Previous Release (02_07_01)
11375 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
11376 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
11378 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
11379 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
11384 Updated Linux-specific code for core macro and OSL interface
11385 changes described above.
11387 Improved /proc/acpi/event. It now can be opened only once and has
11388 proper poll functionality.
11390 Fixed and restructured power management (acpi_bus).
11392 Only create /proc "view by type" when devices of that class exist.
11394 Fixed "charging/discharging" bug (and others) in acpi_battery.
11396 Improved thermal zone code.
11399 3) ASL Compiler, version X2039:
11402 Implemented the new compiler restriction on ASL String hex/octal
11403 escapes to non-null, ASCII values. An error results if an invalid
11404 value is used. (This will require an ACPI 2.0 specification
11407 AML object labels that are output to the optional C and ASM source
11408 are now prefixed with both the ACPI table signature and table ID
11409 to help guarantee uniqueness within a large BIOS project.
11412 ----------------------------------------
11413 Summary of changes for this label: 02_01_02
11415 1) ACPI CA Core Subsystem:
11417 ACPI 2.0 support is complete in the entire Core Subsystem and the
11418 ASL compiler. All new ACPI 2.0 operators are implemented and all
11419 other changes for ACPI 2.0 support are complete. With
11420 simultaneous code and data optimizations throughout the subsystem,
11421 ACPI 2.0 support has been implemented with almost no additional
11422 cost in terms of code and data size.
11424 Implemented a new mechanism for allocation of return buffers. If
11425 the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will
11426 be allocated on behalf of the caller. Consolidated all return
11427 buffer validation and allocation to a common procedure. Return
11428 buffers will be allocated via the primary OSL allocation interface
11429 since it appears that a separate pool is not needed by most users.
11430 If a separate pool is required for these buffers, the caller can
11431 still use the original mechanism and pre-allocate the buffer(s).
11433 Implemented support for string operands within the DerefOf
11436 Restructured the Hardware and Event managers to be table driven,
11437 simplifying the source code and reducing the amount of generated
11440 Split the common read/write low-level ACPI register bitfield
11441 procedure into a separate read and write, simplifying the code
11444 Obsoleted the AcpiOsCallocate OSL interface. This interface was
11445 used only a handful of times and didn't have enough critical mass
11446 for a separate interface. Replaced with a common calloc procedure
11449 Fixed a reported problem with the GPE number mapping mechanism
11450 that allows GPE1 numbers to be non-contiguous with GPE0.
11451 Reorganized the GPE information and shrunk a large array that was
11452 originally large enough to hold info for all possible GPEs (256)
11453 to simply large enough to hold all GPEs up to the largest GPE
11454 number on the machine.
11456 Fixed a reported problem with resource structure alignment on 64-
11459 Changed the AcpiEnableEvent and AcpiDisableEvent external
11460 interfaces to not require any flags for the common case of
11461 enabling/disabling a GPE.
11463 Implemented support to allow a "Notify" on a Processor object.
11465 Most TBDs in comments within the source code have been resolved
11469 Fixed a problem in the interpreter where a standalone parent
11470 prefix (^) was not handled correctly in the interpreter and
11473 Removed obsolete and unnecessary GPE save/restore code.
11475 Implemented Field support in the ASL Load operator. This allows a
11476 table to be loaded from a named field, in addition to loading a
11477 table directly from an Operation Region.
11479 Implemented timeout and handle support in the external Global Lock
11482 Fixed a problem in the AcpiDump utility where pathnames were no
11483 longer being generated correctly during the dump of named objects.
11485 Modified the AML debugger to give a full display of if/while
11486 predicates instead of just one AML opcode at a time. (The
11487 predicate can have several nested ASL statements.) The old method
11488 was confusing during single stepping.
11490 Code and Data Size: Current core subsystem library sizes are shown
11491 below. These are the code and data sizes for the acpica.lib
11492 produced by the Microsoft Visual C++ 6.0 compiler, and these
11493 values do not include any ACPI driver or OSPM code. The debug
11494 version of the code includes the debug output trace mechanism and
11495 has a larger code and data size. Note that these values will vary
11496 depending on the efficiency of the compiler and the compiler
11497 options used during generation.
11499 Previous Release (12_18_01)
11500 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
11501 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
11503 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
11504 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
11508 Implemented fix for PIIX reverse throttling errata (Processor
11511 Added new Limit interface (Processor and Thermal drivers)
11513 New thermal policy (Thermal driver)
11515 Many updates to /proc
11517 Battery "low" event support (Battery driver)
11519 Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers)
11521 IA32 - IA64 initialization unification, no longer experimental
11523 Menuconfig options redesigned
11525 3) ASL Compiler, version X2037:
11527 Implemented several new output features to simplify integration of
11528 AML code into firmware: 1) Output the AML in C source code with
11529 labels for each named ASL object. The original ASL source code
11530 is interleaved as C comments. 2) Output the AML in ASM source code
11531 with labels and interleaved ASL source. 3) Output the AML in
11532 raw hex table form, in either C or ASM.
11534 Implemented support for optional string parameters to the
11535 LoadTable operator.
11537 Completed support for embedded escape sequences within string
11538 literals. The compiler now supports all single character escapes
11539 as well as the Octal and Hex escapes. Note: the insertion of a
11540 null byte into a string literal (via the hex/octal escape) causes
11541 the string to be immediately terminated. A warning is issued.
11543 Fixed a problem where incorrect AML was generated for the case
11544 where an ASL namepath consists of a single parent prefix (
11546 ) with no trailing name segments.
11548 The compiler has been successfully generated with a 64-bit C
11554 ----------------------------------------
11555 Summary of changes for this label: 12_18_01
11559 Enhanced blacklist with reason and severity fields. Any table's
11560 signature may now be used to identify a blacklisted system.
11562 Call _PIC control method to inform the firmware which interrupt
11563 model the OS is using. Turn on any disabled link devices.
11565 Cleaned up busmgr /proc error handling (Andreas Dilger)
11567 2) ACPI CA Core Subsystem:
11569 Implemented ACPI 2.0 semantics for the "Break" operator (Exit from
11572 Completed implementation of the ACPI 2.0 "Continue",
11573 "ConcatenateResTemplate", "DataTableRegion", and "LoadTable"
11574 operators. All new ACPI 2.0 operators are now implemented in both
11575 the ASL compiler and the AML interpreter. The only remaining ACPI
11576 2.0 task is support for the String data type in the DerefOf
11577 operator. Fixed a problem with AcquireMutex where the status code
11578 was lost if the caller had to actually wait for the mutex.
11580 Increased the maximum ASL Field size from 64K bits to 4G bits.
11582 Completed implementation of the external Global Lock interfaces --
11583 AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and
11584 Handler parameters were added.
11586 Completed another pass at removing warnings and issues when
11587 compiling with 64-bit compilers. The code now compiles cleanly
11588 with the Intel 64-bit C/C++ compiler. Most notably, the pointer
11589 add and subtract (diff) macros have changed considerably.
11592 Created and deployed a new ACPI_SIZE type that is 64-bits wide on
11593 64-bit platforms, 32-bits on all others. This type is used
11594 wherever memory allocation and/or the C sizeof() operator is used,
11595 and affects the OSL memory allocation interfaces AcpiOsAllocate
11596 and AcpiOsCallocate.
11598 Implemented sticky user breakpoints in the AML debugger.
11600 Code and Data Size: Current core subsystem library sizes are shown
11601 below. These are the code and data sizes for the acpica.lib
11602 produced by the Microsoft Visual C++ 6.0 compiler, and these
11603 values do not include any ACPI driver or OSPM code. The debug
11604 version of the code includes the debug output trace mechanism and
11605 has a larger code and data size. Note that these values will vary
11606 depending on the efficiency of the compiler and the compiler
11607 options used during generation.
11609 Previous Release (12_05_01)
11610 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
11611 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
11613 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
11614 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
11616 3) ASL Compiler, version X2034:
11618 Now checks for (and generates an error if detected) the use of a
11619 Break or Continue statement without an enclosing While statement.
11622 Successfully generated the compiler with the Intel 64-bit C
11625 ----------------------------------------
11626 Summary of changes for this label: 12_05_01
11628 1) ACPI CA Core Subsystem:
11630 The ACPI 2.0 CopyObject operator is fully implemented. This
11631 operator creates a new copy of an object (and is also used to
11632 bypass the "implicit conversion" mechanism of the Store operator.)
11634 The ACPI 2.0 semantics for the SizeOf operator are fully
11635 implemented. The change is that performing a SizeOf on a
11636 reference object causes an automatic dereference of the object to
11637 tha actual value before the size is evaluated. This behavior was
11638 undefined in ACPI 1.0.
11640 The ACPI 2.0 semantics for the Extended IRQ resource descriptor
11641 have been implemented. The interrupt polarity and mode are now
11644 Fixed a problem where ASL Constants (Zero, One, Ones, Revision)
11645 appearing in Package objects were not properly converted to
11646 integers when the internal Package was converted to an external
11647 object (via the AcpiEvaluateObject interface.)
11649 Fixed a problem with the namespace object deletion mechanism for
11650 objects created by control methods. There were two parts to this
11651 problem: 1) Objects created during the initialization phase method
11652 parse were not being deleted, and 2) The object owner ID mechanism
11653 to track objects was broken.
11655 Fixed a problem where the use of the ASL Scope operator within a
11656 control method would result in an invalid opcode exception.
11658 Fixed a problem introduced in the previous label where the buffer
11659 length required for the _PRT structure was not being returned
11662 Code and Data Size: Current core subsystem library sizes are shown
11663 below. These are the code and data sizes for the acpica.lib
11664 produced by the Microsoft Visual C++ 6.0 compiler, and these
11665 values do not include any ACPI driver or OSPM code. The debug
11666 version of the code includes the debug output trace mechanism and
11667 has a larger code and data size. Note that these values will vary
11668 depending on the efficiency of the compiler and the compiler
11669 options used during generation.
11671 Previous Release (11_20_01)
11672 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
11673 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
11676 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
11677 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
11681 Updated all files to apply cleanly against 2.4.16.
11683 Added basic PCI Interrupt Routing Table (PRT) support for IA32
11684 (acpi_pci.c), and unified the PRT code for IA32 and IA64. This
11685 version supports both static and dyanmic PRT entries, but dynamic
11686 entries are treated as if they were static (not yet
11687 reconfigurable). Architecture- specific code to use this data is
11688 absent on IA32 but should be available shortly.
11690 Changed the initialization sequence to start the ACPI interpreter
11691 (acpi_init) prior to initialization of the PCI driver (pci_init)
11692 in init/main.c. This ordering is required to support PRT and
11693 facilitate other (future) enhancement. A side effect is that the
11694 ACPI bus driver and certain device drivers can no longer be loaded
11697 Modified the 'make menuconfig' options to allow PCI Interrupt
11698 Routing support to be included without the ACPI Bus and other
11701 3) ASL Compiler, version X2033:
11703 Fixed some issues with the use of the new CopyObject and
11704 DataTableRegion operators. Both are fully functional.
11706 ----------------------------------------
11707 Summary of changes for this label: 11_20_01
11709 20 November 2001. Summary of changes for this release.
11711 1) ACPI CA Core Subsystem:
11713 Updated Index support to match ACPI 2.0 semantics. Storing a
11714 Integer, String, or Buffer to an Index of a Buffer will store only
11715 the least-significant byte of the source to the Indexed buffer
11716 byte. Multiple writes are not performed.
11718 Fixed a problem where the access type used in an AccessAs ASL
11719 operator was not recorded correctly into the field object.
11721 Fixed a problem where ASL Event objects were created in a
11722 signalled state. Events are now created in an unsignalled state.
11724 The internal object cache is now purged after table loading and
11725 initialization to reduce the use of dynamic kernel memory -- on
11726 the assumption that object use is greatest during the parse phase
11727 of the entire table (versus the run-time use of individual control
11730 ACPI 2.0 variable-length packages are now fully operational.
11732 Code and Data Size: Code and Data optimizations have permitted new
11733 feature development with an actual reduction in the library size.
11734 Current core subsystem library sizes are shown below. These are
11735 the code and data sizes for the acpica.lib produced by the
11736 Microsoft Visual C++ 6.0 compiler, and these values do not include
11737 any ACPI driver or OSPM code. The debug version of the code
11738 includes the debug output trace mechanism and has a larger code
11739 and data size. Note that these values will vary depending on the
11740 efficiency of the compiler and the compiler options used during
11743 Previous Release (11_09_01):
11744 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
11745 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
11748 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
11749 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
11753 Enhanced the ACPI boot-time initialization code to allow the use
11754 of Local APIC tables for processor enumeration on IA-32, and to
11755 pave the way for a fully MPS-free boot (on SMP systems) in the
11756 near future. This functionality replaces
11757 arch/i386/kernel/acpitables.c, which was introduced in an earlier
11758 2.4.15-preX release. To enable this feature you must add
11759 "acpi_boot=on" to the kernel command line -- see the help entry
11760 for CONFIG_ACPI_BOOT for more information. An IA-64 release is in
11763 Restructured the configuration options to allow boot-time table
11764 parsing support without inclusion of the ACPI Interpreter (and
11767 NOTE: This release does not include fixes for the reported events,
11768 power-down, and thermal passive cooling issues (coming soon).
11772 Added additional typechecking for Fields within restricted access
11773 Operation Regions. All fields within EC and CMOS regions must be
11774 declared with ByteAcc. All fields withing SMBus regions must be
11775 declared with the BufferAcc access type.
11777 Fixed a problem where the listing file output of control methods
11778 no longer interleaved the actual AML code with the ASL source
11784 ----------------------------------------
11785 Summary of changes for this label: 11_09_01
11787 1) ACPI CA Core Subsystem:
11789 Implemented ACPI 2.0-defined support for writes to fields with a
11790 Buffer, String, or Integer source operand that is smaller than the
11791 target field. In these cases, the source operand is zero-extended
11792 to fill the target field.
11794 Fixed a problem where a Field starting bit offset (within the
11795 parent operation region) was calculated incorrectly if the
11797 alignment of the field differed from the access width. This
11798 affected CreateWordField, CreateDwordField, CreateQwordField, and
11799 possibly other fields that use the "AccessAny" keyword.
11801 Fixed a problem introduced in the 11_02_01 release where indirect
11802 stores through method arguments did not operate correctly.
11806 Implemented boot-time ACPI table parsing support
11807 (CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code
11808 facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than
11809 legacy BIOS interfaces (e.g. MPS) for the configuration of system
11810 processors, memory, and interrupts during setup_arch(). Note that
11811 this patch does not include the required architecture-specific
11812 changes required to apply this information -- subsequent patches
11813 will be posted for both IA32 and IA64 to achieve this.
11815 Added low-level sleep support for IA32 platforms, courtesy of Pat
11816 Mochel. This allows IA32 systems to transition to/from various
11817 sleeping states (e.g. S1, S3), although the lack of a centralized
11818 driver model and power-manageable drivers will prevent its
11819 (successful) use on most systems.
11821 Revamped the ACPI 'menuconfig' layout: created new "ACPI Support"
11822 submenu, unified IA32 and IA64 options, added new "Boot using ACPI
11823 tables" option, etc.
11825 Increased the default timeout for the EC driver from 1ms to 10ms
11826 (1000 cycles of 10us) to try to address AE_TIME errors during EC
11829 ----------------------------------------
11830 Summary of changes for this label: 11_02_01
11832 1) ACPI CA Core Subsystem:
11834 ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access
11835 (QWordAcc keyword). All ACPI 2.0 64-bit support is now
11838 OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required
11839 changes to support ACPI 2.0 Qword field access. Read/Write
11840 PciConfiguration(), Read/Write Memory(), and Read/Write Port() now
11841 accept an ACPI_INTEGER (64 bits) as the value parameter. Also,
11842 the value parameter for the address space handler interface is now
11843 an ACPI_INTEGER. OSL implementations of these interfaces must now
11844 handle the case where the Width parameter is 64.
11846 Index Fields: Fixed a problem where unaligned bit assembly and
11847 disassembly for IndexFields was not supported correctly.
11849 Index and Bank Fields: Nested Index and Bank Fields are now
11850 supported. During field access, a check is performed to ensure
11851 that the value written to an Index or Bank register is not out of
11852 the range of the register. The Index (or Bank) register is
11853 written before each access to the field data. Future support will
11854 include allowing individual IndexFields to be wider than the
11855 DataRegister width.
11857 Fields: Fixed a problem where the AML interpreter was incorrectly
11858 attempting to write beyond the end of a Field/OpRegion. This was
11859 a boundary case that occurred when a DWORD field was written to a
11860 BYTE access OpRegion, forcing multiple writes and causing the
11861 interpreter to write one datum too many.
11863 Fields: Fixed a problem with Field/OpRegion access where the
11864 starting bit address of a field was incorrectly calculated if the
11865 current access type was wider than a byte (WordAcc, DwordAcc, or
11868 Fields: Fixed a problem where forward references to individual
11869 FieldUnits (individual Field names within a Field definition) were
11870 not resolved during the AML table load.
11872 Fields: Fixed a problem where forward references from a Field
11873 definition to the parent Operation Region definition were not
11874 resolved during the AML table load.
11876 Fields: Duplicate FieldUnit names within a scope are now detected
11877 during AML table load.
11879 Acpi Interfaces: Fixed a problem where the AcpiGetName() interface
11880 returned an incorrect name for the root node.
11882 Code and Data Size: Code and Data optimizations have permitted new
11883 feature development with an actual reduction in the library size.
11884 Current core subsystem library sizes are shown below. These are
11885 the code and data sizes for the acpica.lib produced by the
11886 Microsoft Visual C++ 6.0 compiler, and these values do not include
11887 any ACPI driver or OSPM code. The debug version of the code
11888 includes the debug output trace mechanism and has a larger code
11889 and data size. Note that these values will vary depending on the
11890 efficiency of the compiler and the compiler options used during
11893 Previous Release (10_18_01):
11894 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
11895 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
11898 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
11899 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
11903 Improved /proc processor output (Pavel Machek) Re-added
11904 MODULE_LICENSE("GPL") to all modules.
11906 3) ASL Compiler version X2030:
11908 Duplicate FieldUnit names within a scope are now detected and
11913 Programmer Reference updated to reflect OSL and address space
11914 handler interface changes described above.
11916 ----------------------------------------
11917 Summary of changes for this label: 10_18_01
11919 ACPI CA Core Subsystem:
11921 Fixed a problem with the internal object reference count mechanism
11922 that occasionally caused premature object deletion. This resolves
11923 all of the outstanding problem reports where an object is deleted
11924 in the middle of an interpreter evaluation. Although this problem
11925 only showed up in rather obscure cases, the solution to the
11926 problem involved an adjustment of all reference counts involving
11927 objects attached to namespace nodes.
11929 Fixed a problem with Field support in the interpreter where
11930 writing to an aligned field whose length is an exact multiple (2
11931 or greater) of the field access granularity would cause an attempt
11932 to write beyond the end of the field.
11934 The top level AML opcode execution functions within the
11935 interpreter have been renamed with a more meaningful and
11936 consistent naming convention. The modules exmonad.c and
11937 exdyadic.c were eliminated. New modules are exoparg1.c,
11938 exoparg2.c, exoparg3.c, and exoparg6.c.
11940 Support for the ACPI 2.0 "Mid" ASL operator has been implemented.
11942 Fixed a problem where the AML debugger was causing some internal
11943 objects to not be deleted during subsystem termination.
11945 Fixed a problem with the external AcpiEvaluateObject interface
11946 where the subsystem would fault if the named object to be
11947 evaluated refered to a constant such as Zero, Ones, etc.
11949 Fixed a problem with IndexFields and BankFields where the
11950 subsystem would fault if the index, data, or bank registers were
11951 not defined in the same scope as the field itself.
11953 Added printf format string checking for compilers that support
11954 this feature. Corrected more than 50 instances of issues with
11955 format specifiers within invocations of ACPI_DEBUG_PRINT
11956 throughout the core subsystem code.
11958 The ASL "Revision" operator now returns the ACPI support level
11959 implemented in the core - the value "2" since the ACPI 2.0 support
11960 is more than 50% implemented.
11962 Enhanced the output of the AML debugger "dump namespace" command
11963 to output in a more human-readable form.
11965 Current core subsystem library code sizes are shown below. These
11967 are the code and data sizes for the acpica.lib produced by the
11968 Microsoft Visual C++ 6.0 compiler, and these values do not include
11969 any ACPI driver or OSPM code. The debug version of the code
11970 includes the full debug trace mechanism -- leading to a much
11972 larger code and data size. Note that these values will vary
11973 depending on the efficiency of the compiler and the compiler
11974 options used during generation.
11976 Previous Label (09_20_01):
11977 Non-Debug Version: 65K Code, 5K Data, 70K Total
11978 Debug Version: 138K Code, 58K Data, 196K Total
11982 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
11983 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
11987 Implemented a "Bad BIOS Blacklist" to track machines that have
11988 known ASL/AML problems.
11990 Enhanced the /proc interface for the thermal zone driver and added
11991 support for _HOT (the critical suspend trip point). The 'info'
11992 file now includes threshold/policy information, and allows setting
11993 of _SCP (cooling preference) and _TZP (polling frequency) values
11994 to the 'info' file. Examples: "echo tzp=5 > info" sets the polling
11995 frequency to 5 seconds, and "echo scp=1 > info" sets the cooling
11996 preference to the passive/quiet mode (if supported by the ASL).
11998 Implemented a workaround for a gcc bug that resuted in an OOPs
11999 when loading the control method battery driver.
12001 ----------------------------------------
12002 Summary of changes for this label: 09_20_01
12004 ACPI CA Core Subsystem:
12006 The AcpiEnableEvent and AcpiDisableEvent interfaces have been
12007 modified to allow individual GPE levels to be flagged as wake-
12008 enabled (i.e., these GPEs are to remain enabled when the platform
12011 The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now
12012 support wake-enabled GPEs. This means that upon entering the
12013 sleep state, all GPEs that are not wake-enabled are disabled.
12014 When leaving the sleep state, these GPEs are reenabled.
12016 A local double-precision divide/modulo module has been added to
12017 enhance portability to OS kernels where a 64-bit math library is
12018 not available. The new module is "utmath.c".
12020 Several optimizations have been made to reduce the use of CPU
12021 stack. Originally over 2K, the maximum stack usage is now below
12022 2K at 1860 bytes (1.82k)
12024 Fixed a problem with the AcpiGetFirmwareTable interface where the
12025 root table pointer was not mapped into a logical address properly.
12027 Fixed a problem where a NULL pointer was being dereferenced in the
12028 interpreter code for the ASL Notify operator.
12030 Fixed a problem where the use of the ASL Revision operator
12031 returned an error. This operator now returns the current version
12032 of the ACPI CA core subsystem.
12034 Fixed a problem where objects passed as control method parameters
12035 to AcpiEvaluateObject were always deleted at method termination.
12036 However, these objects may end up being stored into the namespace
12037 by the called method. The object reference count mechanism was
12038 applied to these objects instead of a force delete.
12040 Fixed a problem where static strings or buffers (contained in the
12041 AML code) that are declared as package elements within the ASL
12042 code could cause a fault because the interpreter would attempt to
12043 delete them. These objects are now marked with the "static
12044 object" flag to prevent any attempt to delete them.
12046 Implemented an interpreter optimization to use operands directly
12047 from the state object instead of extracting the operands to local
12048 variables. This reduces stack use and code size, and improves
12051 The module exxface.c was eliminated as it was an unnecessary extra
12054 Current core subsystem library code sizes are shown below. These
12055 are the code and data sizes for the acpica.lib produced by the
12056 Microsoft Visual C++ 6.0 compiler, and these values do not include
12057 any ACPI driver or OSPM code. The debug version of the code
12058 includes the full debug trace mechanism -- leading to a much
12059 larger code and data size. Note that these values will vary
12060 depending on the efficiency of the compiler and the compiler
12061 options used during generation.
12063 Non-Debug Version: 65K Code, 5K Data, 70K Total
12064 (Previously 69K) Debug Version: 138K Code, 58K Data, 196K
12065 Total (Previously 195K)
12069 Support for ACPI 2.0 64-bit integers has been added. All ACPI
12070 Integer objects are now 64 bits wide
12072 All Acpi data types and structures are now in lower case. Only
12073 Acpi macros are upper case for differentiation.
12077 Changes to the external interfaces as described above.
12079 ----------------------------------------
12080 Summary of changes for this label: 08_31_01
12082 ACPI CA Core Subsystem:
12084 A bug with interpreter implementation of the ASL Divide operator
12085 was found and fixed. The implicit function return value (not the
12086 explicit store operands) was returning the remainder instead of
12087 the quotient. This was a longstanding bug and it fixes several
12088 known outstanding issues on various platforms.
12090 The ACPI_DEBUG_PRINT and function trace entry/exit macros have
12091 been further optimized for size. There are 700 invocations of the
12092 DEBUG_PRINT macro alone, so each optimization reduces the size of
12093 the debug version of the subsystem significantly.
12095 A stack trace mechanism has been implemented. The maximum stack
12096 usage is about 2K on 32-bit platforms. The debugger command "stat
12097 stack" will display the current maximum stack usage.
12099 All public symbols and global variables within the subsystem are
12100 now prefixed with the string "Acpi". This keeps all of the
12101 symbols grouped together in a kernel map, and avoids conflicts
12102 with other kernel subsystems.
12104 Most of the internal fixed lookup tables have been moved into the
12105 code segment via the const operator.
12107 Several enhancements have been made to the interpreter to both
12108 reduce the code size and improve performance.
12110 Current core subsystem library code sizes are shown below. These
12111 are the code and data sizes for the acpica.lib produced by the
12112 Microsoft Visual C++ 6.0 compiler, and these values do not include
12113 any ACPI driver or OSPM code. The debug version of the code
12114 includes the full debug trace mechanism which contains over 700
12115 invocations of the DEBUG_PRINT macro, 500 function entry macro
12116 invocations, and over 900 function exit macro invocations --
12117 leading to a much larger code and data size. Note that these
12118 values will vary depending on the efficiency of the compiler and
12119 the compiler options used during generation.
12121 Non-Debug Version: 64K Code, 5K Data, 69K Total
12122 Debug Version: 137K Code, 58K Data, 195K Total
12126 Implemented wbinvd() macro, pending a kernel-wide definition.
12128 Fixed /proc/acpi/event to handle poll() and short reads.
12130 ASL Compiler, version X2026:
12132 Fixed a problem introduced in the previous label where the AML
12134 code emitted for package objects produced packages with zero
12137 ----------------------------------------
12138 Summary of changes for this label: 08_16_01
12140 ACPI CA Core Subsystem:
12142 The following ACPI 2.0 ASL operators have been implemented in the
12143 AML interpreter (These are already supported by the Intel ASL
12144 compiler): ToDecimalString, ToHexString, ToString, ToInteger, and
12145 ToBuffer. Support for 64-bit AML constants is implemented in the
12146 AML parser, debugger, and disassembler.
12148 The internal memory tracking mechanism (leak detection code) has
12149 been upgraded to reduce the memory overhead (a separate tracking
12150 block is no longer allocated for each memory allocation), and now
12151 supports all of the internal object caches.
12153 The data structures and code for the internal object caches have
12154 been coelesced and optimized so that there is a single cache and
12155 memory list data structure and a single group of functions that
12156 implement generic cache management. This has reduced the code
12157 size in both the debug and release versions of the subsystem.
12159 The DEBUG_PRINT macro(s) have been optimized for size and replaced
12160 by ACPI_DEBUG_PRINT. The syntax for this macro is slightly
12161 different, because it generates a single call to an internal
12162 function. This results in a savings of about 90 bytes per
12163 invocation, resulting in an overall code and data savings of about
12164 16% in the debug version of the subsystem.
12168 Fixed C3 disk corruption problems and re-enabled C3 on supporting
12171 Integrated low-level sleep code by Patrick Mochel.
12173 Further tweaked source code Linuxization.
12179 Support for ACPI 2.0 variable length packages is fixed/completed.
12181 Fixed a problem where the optional length parameter for the ACPI
12182 2.0 ToString operator.
12184 Fixed multiple extraneous error messages when a syntax error is
12185 detected within the declaration line of a control method.
12187 ----------------------------------------
12188 Summary of changes for this label: 07_17_01
12190 ACPI CA Core Subsystem:
12192 Added a new interface named AcpiGetFirmwareTable to obtain any
12193 ACPI table via the ACPI signature. The interface can be called at
12194 any time during kernel initialization, even before the kernel
12195 virtual memory manager is initialized and paging is enabled. This
12196 allows kernel subsystems to obtain ACPI tables very early, even
12197 before the ACPI CA subsystem is initialized.
12199 Fixed a problem where Fields defined with the AnyAcc attribute
12200 could be resolved to the incorrect address under the following
12201 conditions: 1) the field width is larger than 8 bits and 2) the
12202 parent operation region is not defined on a DWORD boundary.
12204 Fixed a problem where the interpreter is not being locked during
12205 namespace initialization (during execution of the _INI control
12206 methods), causing an error when an attempt is made to release it
12209 ACPI 2.0 support in the AML Interpreter has begun and will be
12210 ongoing throughout the rest of this year. In this label, The Mod
12211 operator is implemented.
12213 Added a new data type to contain full PCI addresses named
12214 ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device,
12215 and Function values.
12219 Enhanced the Linux version of the source code to change most
12220 capitalized ACPI type names to lowercase. For example, all
12221 instances of ACPI_STATUS are changed to acpi_status. This will
12222 result in a large diff, but the change is strictly cosmetic and
12223 aligns the CA code closer to the Linux coding standard.
12227 The interfaces to the PCI configuration space have been changed to
12228 add the PCI Segment number and to split the single 32-bit combined
12229 DeviceFunction field into two 16-bit fields. This was
12230 accomplished by moving the four values that define an address in
12231 PCI configuration space (segment, bus, device, and function) to
12232 the new ACPI_PCI_ID structure.
12234 The changes to the PCI configuration space interfaces led to a
12235 reexamination of the complete set of address space access
12236 interfaces for PCI, I/O, and Memory. The previously existing 18
12237 interfaces have proven difficult to maintain (any small change
12238 must be propagated across at least 6 interfaces) and do not easily
12239 allow for future expansion to 64 bits if necessary. Also, on some
12240 systems, it would not be appropriate to demultiplex the access
12241 width (8, 16, 32,or 64) before calling the OSL if the
12242 corresponding native OS interfaces contain a similar access width
12243 parameter. For these reasons, the 18 address space interfaces
12244 have been replaced by these 6 new ones:
12246 AcpiOsReadPciConfiguration
12247 AcpiOsWritePciConfiguration
12253 Added a new interface named AcpiOsGetRootPointer to allow the OSL
12254 to perform the platform and/or OS-specific actions necessary to
12255 obtain the ACPI RSDP table pointer. On IA-32 platforms, this
12256 interface will simply call down to the CA core to perform the low-
12257 memory search for the table. On IA-64, the RSDP is obtained from
12258 EFI. Migrating this interface to the OSL allows the CA core to
12260 remain OS and platform independent.
12262 Added a new interface named AcpiOsSignal to provide a generic
12263 "function code and pointer" interface for various miscellaneous
12264 signals and notifications that must be made to the host OS. The
12265 first such signals are intended to support the ASL Fatal and
12266 Breakpoint operators. In the latter case, the AcpiOsBreakpoint
12267 interface has been obsoleted.
12269 The definition of the AcpiFormatException interface has been
12270 changed to simplify its use. The caller no longer must supply a
12271 buffer to the call; A pointer to a const string is now returned
12272 directly. This allows the call to be easily used in printf
12273 statements, etc. since the caller does not have to manage a local
12277 ASL Compiler, Version X2025:
12279 The ACPI 2.0 Switch/Case/Default operators have been implemented
12280 and are fully functional. They will work with all ACPI 1.0
12281 interpreters, since the operators are simply translated to If/Else
12284 The ACPI 2.0 ElseIf operator is implemented and will also work
12285 with 1.0 interpreters, for the same reason.
12287 Implemented support for ACPI 2.0 variable-length packages. These
12288 packages have a separate opcode, and their size is determined by
12289 the interpreter at run-time.
12291 Documentation The ACPI CA Programmer Reference has been updated to
12292 reflect the new interfaces and changes to existing interfaces.
12294 ------------------------------------------
12295 Summary of changes for this label: 06_15_01
12297 ACPI CA Core Subsystem:
12299 Fixed a problem where a DWORD-accessed field within a Buffer
12300 object would get its byte address inadvertently rounded down to
12301 the nearest DWORD. Buffers are always Byte-accessible.
12303 ASL Compiler, version X2024:
12305 Fixed a problem where the Switch() operator would either fault or
12306 hang the compiler. Note however, that the AML code for this ACPI
12307 2.0 operator is not yet implemented.
12309 Compiler uses the new AcpiOsGetTimer interface to obtain compile
12312 Implementation of the CreateField operator automatically converts
12313 a reference to a named field within a resource descriptor from a
12314 byte offset to a bit offset if required.
12316 Added some missing named fields from the resource descriptor
12317 support. These are the names that are automatically created by the
12318 compiler to reference fields within a descriptor. They are only
12319 valid at compile time and are not passed through to the AML
12322 Resource descriptor named fields are now typed as Integers and
12323 subject to compile-time typechecking when used in expressions.
12325 ------------------------------------------
12326 Summary of changes for this label: 05_18_01
12328 ACPI CA Core Subsystem:
12330 Fixed a couple of problems in the Field support code where bits
12331 from adjacent fields could be returned along with the proper field
12332 bits. Restructured the field support code to improve performance,
12333 readability and maintainability.
12335 New DEBUG_PRINTP macro automatically inserts the procedure name
12336 into the output, saving hundreds of copies of procedure name
12337 strings within the source, shrinking the memory footprint of the
12338 debug version of the core subsystem.
12340 Source Code Structure:
12342 The source code directory tree was restructured to reflect the
12343 current organization of the component architecture. Some files
12344 and directories have been moved and/or renamed.
12348 Fixed leaking kacpidpc processes.
12350 Fixed queueing event data even when /proc/acpi/event is not
12353 ASL Compiler, version X2020:
12355 Memory allocation performance enhancement - over 24X compile time
12356 improvement on large ASL files. Parse nodes and namestring
12357 buffers are now allocated from a large internal compiler buffer.
12359 The temporary .SRC file is deleted unless the "-s" option is
12362 The "-d" debug output option now sends all output to the .DBG file
12363 instead of the console.
12365 "External" second parameter is now optional
12367 "ElseIf" syntax now properly allows the predicate
12369 Last operand to "Load" now recognized as a Target operand
12371 Debug object can now be used anywhere as a normal object.
12373 ResourceTemplate now returns an object of type BUFFER
12375 EISAID now returns an object of type INTEGER
12377 "Index" now works with a STRING operand
12379 "LoadTable" now accepts optional parameters
12381 "ToString" length parameter is now optional
12383 "Interrupt (ResourceType," parse error fixed.
12385 "Register" with a user-defined region space parse error fixed
12387 Escaped backslash at the end of a string ("\\") scan/parse error
12390 "Revision" is now an object of type INTEGER.
12394 ------------------------------------------
12395 Summary of changes for this label: 05_02_01
12399 /proc/acpi/event now blocks properly.
12401 Removed /proc/sys/acpi. You can still dump your DSDT from
12404 ACPI CA Core Subsystem:
12406 Fixed a problem introduced in the previous label where some of the
12407 "small" resource descriptor types were not recognized.
12409 Improved error messages for the case where an ASL Field is outside
12410 the range of the parent operation region.
12412 ASL Compiler, version X2018:
12415 Added error detection for ASL Fields that extend beyond the length
12416 of the parent operation region (only if the length of the region
12417 is known at compile time.) This includes fields that have a
12418 minimum access width that is smaller than the parent region, and
12419 individual field units that are partially or entirely beyond the
12420 extent of the parent.
12424 ------------------------------------------
12425 Summary of changes for this label: 04_27_01
12427 ACPI CA Core Subsystem:
12429 Fixed a problem where the namespace mutex could be released at the
12430 wrong time during execution of AcpiRemoveAddressSpaceHandler.
12432 Added optional thread ID output for debug traces, to simplify
12433 debugging of multiple threads. Added context switch notification
12434 when the debug code realizes that a different thread is now
12435 executing ACPI code.
12437 Some additional external data types have been prefixed with the
12438 string "ACPI_" for consistency. This may effect existing code.
12439 The data types affected are the external callback typedefs - e.g.,
12441 WALK_CALLBACK becomes ACPI_WALK_CALLBACK.
12445 Fixed an issue with the OSL semaphore implementation where a
12446 thread was waking up with an error from receiving a SIGCHLD
12449 Linux version of ACPI CA now uses the system C library for string
12450 manipulation routines instead of a local implementation.
12452 Cleaned up comments and removed TBDs.
12454 ASL Compiler, version X2017:
12456 Enhanced error detection and reporting for all file I/O
12461 Programmer Reference updated to version 1.06.
12465 ------------------------------------------
12466 Summary of changes for this label: 04_13_01
12468 ACPI CA Core Subsystem:
12470 Restructured support for BufferFields and RegionFields.
12471 BankFields support is now fully operational. All known 32-bit
12472 limitations on field sizes have been removed. Both BufferFields
12473 and (Operation) RegionFields are now supported by the same field
12476 Resource support now supports QWORD address and IO resources. The
12477 16/32/64 bit address structures and the Extended IRQ structure
12478 have been changed to properly handle Source Resource strings.
12480 A ThreadId of -1 is now used to indicate a "mutex not acquired"
12481 condition internally and must never be returned by AcpiOsThreadId.
12482 This reserved value was changed from 0 since Unix systems allow a
12487 Driver code reorganized to enhance portability
12489 Added a kernel configuration option to control ACPI_DEBUG
12491 Fixed the EC driver to honor _GLK.
12493 ASL Compiler, version X2016:
12495 Fixed support for the "FixedHw" keyword. Previously, the FixedHw
12496 address space was set to 0, not 0x7f as it should be.
12498 ------------------------------------------
12499 Summary of changes for this label: 03_13_01
12501 ACPI CA Core Subsystem:
12503 During ACPI initialization, the _SB_._INI method is now run if
12506 Notify handler fix - notifies are deferred until the parent method
12507 completes execution. This fixes the "mutex already acquired"
12508 issue seen occasionally.
12510 Part of the "implicit conversion" rules in ACPI 2.0 have been
12511 found to cause compatibility problems with existing ASL/AML. The
12512 convert "result-to-target-type" implementation has been removed
12513 for stores to method Args and Locals. Source operand conversion
12514 is still fully implemented. Possible changes to ACPI 2.0
12515 specification pending.
12517 Fix to AcpiRsCalculatePciRoutingTableLength to return correct
12520 Fix for compiler warnings for 64-bit compiles.
12524 /proc output aligned for easier parsing.
12526 Release-version compile problem fixed.
12528 New kernel configuration options documented in Configure.help.
12530 IBM 600E - Fixed Sleep button may generate "Invalid <NULL>
12535 Power resource driver integrated with bus manager.
12537 Fixed kernel fault during active cooling for thermal zones.
12541 The source code tree has been restructured.
12545 ------------------------------------------
12546 Summary of changes for this label: 03_02_01
12548 Linux OS Services Layer (OSL):
12550 Major revision of all Linux-specific code.
12552 Modularized all ACPI-specific drivers.
12554 Added new thermal zone and power resource drivers.
12556 Revamped /proc interface (new functionality is under /proc/acpi).
12558 New kernel configuration options.
12560 Linux known issues:
12562 New kernel configuration options not documented in Configure.help
12566 Module dependencies not currently implemented. If used, they
12567 should be loaded in this order: busmgr, power, ec, system,
12568 processor, battery, ac_adapter, button, thermal.
12570 Modules will not load if CONFIG_MODVERSION is set.
12572 IBM 600E - entering S5 may reboot instead of shutting down.
12574 IBM 600E - Sleep button may generate "Invalid <NULL> context"
12577 Some systems may fail with "execution mutex already acquired"
12580 ACPI CA Core Subsystem:
12582 Added a new OSL Interface, AcpiOsGetThreadId. This was required
12583 for the deadlock detection code. Defined to return a non-zero, 32-
12584 bit thread ID for the currently executing thread. May be a non-
12585 zero constant integer on single-thread systems.
12587 Implemented deadlock detection for internal subsystem mutexes. We
12588 may add conditional compilation for this code (debug only) later.
12590 ASL/AML Mutex object semantics are now fully supported. This
12591 includes multiple acquires/releases by owner and support for the
12593 Mutex SyncLevel parameter.
12595 A new "Force Release" mechanism automatically frees all ASL
12596 Mutexes that have been acquired but not released when a thread
12597 exits the interpreter. This forces conformance to the ACPI spec
12598 ("All mutexes must be released when an invocation exits") and
12599 prevents deadlocked ASL threads. This mechanism can be expanded
12600 (later) to monitor other resource acquisitions if OEM ASL code
12601 continues to misbehave (which it will).
12603 Several new ACPI exception codes have been added for the Mutex
12606 Recursive method calls are now allowed and supported (the ACPI
12607 spec does in fact allow recursive method calls.) The number of
12608 recursive calls is subject to the restrictions imposed by the
12609 SERIALIZED method keyword and SyncLevel (ACPI 2.0) method
12612 Implemented support for the SyncLevel parameter for control
12613 methods (ACPI 2.0 feature)
12615 Fixed a deadlock problem when multiple threads attempted to use
12618 Fixed a problem where the string length of a String package
12619 element was not always set in a package returned from
12620 AcpiEvaluateObject.
12622 Fixed a problem where the length of a String package element was
12623 not always included in the length of the overall package returned
12624 from AcpiEvaluateObject.
12626 Added external interfaces (Acpi*) to the ACPI debug memory
12627 manager. This manager keeps a list of all outstanding
12628 allocations, and can therefore detect memory leaks and attempts to
12629 free memory blocks more than once. Useful for code such as the
12630 power manager, etc. May not be appropriate for device drivers.
12631 Performance with the debug code enabled is slow.
12633 The ACPI Global Lock is now an optional hardware element.
12635 ASL Compiler Version X2015:
12637 Integrated changes to allow the compiler to be generated on
12638 multiple platforms.
12640 Linux makefile added to generate the compiler on Linux
12644 All platform-specific headers have been moved to their own
12645 subdirectory, Include/Platform.
12647 New source file added, Interpreter/ammutex.c
12649 New header file, Include/acstruct.h
12653 The programmer reference has been updated for the following new
12654 interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree
12656 ------------------------------------------
12657 Summary of changes for this label: 02_08_01
12659 Core ACPI CA Subsystem: Fixed a problem where an error was
12660 incorrectly returned if the return resource buffer was larger than
12661 the actual data (in the resource interfaces).
12663 References to named objects within packages are resolved to the
12665 full pathname string before packages are returned directly (via
12666 the AcpiEvaluateObject interface) or indirectly via the resource
12669 Linux OS Services Layer (OSL):
12671 Improved /proc battery interface.
12674 Added C-state debugging output and other miscellaneous fixes.
12676 ASL Compiler Version X2014:
12678 All defined method arguments can now be used as local variables,
12679 including the ones that are not actually passed in as parameters.
12680 The compiler tracks initialization of the arguments and issues an
12681 exception if they are used without prior assignment (just like
12684 The -o option now specifies a filename prefix that is used for all
12685 output files, including the AML output file. Otherwise, the
12686 default behavior is as follows: 1) the AML goes to the file
12687 specified in the DSDT. 2) all other output files use the input
12688 source filename as the base.
12690 ------------------------------------------
12691 Summary of changes for this label: 01_25_01
12693 Core ACPI CA Subsystem: Restructured the implementation of object
12694 store support within the interpreter. This includes support for
12695 the Store operator as well as any ASL operators that include a
12698 Partially implemented support for Implicit Result-to-Target
12699 conversion. This is when a result object is converted on the fly
12700 to the type of an existing target object. Completion of this
12701 support is pending further analysis of the ACPI specification
12702 concerning this matter.
12704 CPU-specific code has been removed from the subsystem (hardware
12707 New Power Management Timer functions added
12709 Linux OS Services Layer (OSL): Moved system state transition code
12710 to the core, fixed it, and modified Linux OSL accordingly.
12712 Fixed C2 and C3 latency calculations.
12715 We no longer use the compilation date for the version message on
12716 initialization, but retrieve the version from AcpiGetSystemInfo().
12718 Incorporated for fix Sony VAIO machines.
12720 Documentation: The Programmer Reference has been updated and
12724 ASL Compiler: Version X2013: Fixed a problem where the line
12725 numbering and error reporting could get out of sync in the
12726 presence of multiple include files.
12728 ------------------------------------------
12729 Summary of changes for this label: 01_15_01
12731 Core ACPI CA Subsystem:
12733 Implemented support for type conversions in the execution of the
12734 ASL Concatenate operator (The second operand is converted to
12735 match the type of the first operand before concatenation.)
12737 Support for implicit source operand conversion is partially
12738 implemented. The ASL source operand types Integer, Buffer, and
12739 String are freely interchangeable for most ASL operators and are
12740 converted by the interpreter on the fly as required. Implicit
12741 Target operand conversion (where the result is converted to the
12742 target type before storing) is not yet implemented.
12744 Support for 32-bit and 64-bit BCD integers is implemented.
12746 Problem fixed where a field read on an aligned field could cause a
12747 read past the end of the field.
12749 New exception, AE_AML_NO_RETURN_VALUE, is returned when a method
12750 does not return a value, but the caller expects one. (The ASL
12751 compiler flags this as a warning.)
12756 1. Static typechecking of all operands is implemented. This
12757 prevents the use of invalid objects (such as using a Package where
12758 an Integer is required) at compile time instead of at interpreter
12760 2. The ASL source line is printed with ALL errors and warnings.
12761 3. Bug fix for source EOF without final linefeed.
12762 4. Debug option is split into a parse trace and a namespace trace.
12763 5. Namespace output option (-n) includes initial values for
12764 integers and strings.
12765 6. Parse-only option added for quick syntax checking.
12766 7. Compiler checks for duplicate ACPI name declarations
12769 1. Relaxed typechecking to allow interchangeability between
12770 strings, integers, and buffers. These types are now converted by
12771 the interpreter at runtime.
12772 2. Compiler reports time taken by each internal subsystem in the
12776 ------------------------------------------
12777 Summary of changes for this label: 12_14_00
12781 This is the first official release of the compiler. Since the
12782 compiler requires elements of the Core Subsystem, this label
12783 synchronizes everything.
12785 ------------------------------------------
12786 Summary of changes for this label: 12_08_00
12789 Fixed a problem where named references within the ASL definition
12790 of both OperationRegions and CreateXXXFields did not work
12791 properly. The symptom was an AE_AML_OPERAND_TYPE during
12792 initialization of the region/field. This is similar (but not
12793 related internally) to the problem that was fixed in the last
12796 Implemented both 32-bit and 64-bit support for the BCD ASL
12797 functions ToBCD and FromBCD.
12799 Updated all legal headers to include "2000" in the copyright
12802 ------------------------------------------
12803 Summary of changes for this label: 12_01_00
12805 Fixed a problem where method invocations within the ASL definition
12806 of both OperationRegions and CreateXXXFields did not work
12807 properly. The symptom was an AE_AML_OPERAND_TYPE during
12808 initialization of the region/field:
12810 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments
12811 [DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s)
12814 Fixed a problem where operators with more than one nested
12815 subexpression would fail. The symptoms were varied, by mostly
12816 AE_AML_OPERAND_TYPE errors. This was actually a rather serious
12817 problem that has gone unnoticed until now.
12819 Subtract (Add (1,2), Multiply (3,4))
12821 Fixed a problem where AcpiGetHandle didn't quite get fixed in the
12822 previous build (The prefix part of a relative path was handled
12825 Fixed a problem where Operation Region initialization failed if
12826 the operation region name was a "namepath" instead of a simple
12827 "nameseg". Symptom was an AE_NO_OPERAND error.
12829 Fixed a problem where an assignment to a local variable via the
12830 indirect RefOf mechanism only worked for the first such
12831 assignment. Subsequent assignments were ignored.
12833 ------------------------------------------
12834 Summary of changes for this label: 11_15_00
12836 ACPI 2.0 table support with backwards support for ACPI 1.0 and the
12837 0.71 extensions. Note: although we can read ACPI 2.0 BIOS tables,
12838 the AML interpreter does NOT have support for the new 2.0 ASL
12839 grammar terms at this time.
12841 All ACPI hardware access is via the GAS structures in the ACPI 2.0
12844 All physical memory addresses across all platforms are now 64 bits
12845 wide. Logical address width remains dependent on the platform
12848 AcpiOsMapMemory interface changed to a 64-bit physical address.
12850 The AML interpreter integer size is now 64 bits, as per the ACPI
12853 For backwards compatibility with ACPI 1.0, ACPI tables with a
12854 revision number less than 2 use 32-bit integers only.
12856 Fixed a problem where the evaluation of OpRegion operands did not
12857 always resolve them to numbers properly.
12859 ------------------------------------------
12860 Summary of changes for this label: 10_20_00
12862 Fix for CBN_._STA issue. This fix will allow correct access to
12863 CBN_ OpRegions when the _STA returns 0x8.
12865 Support to convert ACPI constants (Ones, Zeros, One) to actual
12866 values before a package object is returned
12868 Fix for method call as predicate to if/while construct causing
12869 incorrect if/while behavior
12871 Fix for Else block package lengths sometimes calculated wrong (if
12874 Fix for Processor object length field, was always zero
12876 Table load abort if FACP sanity check fails
12878 Fix for problem with Scope(name) if name already exists
12880 Warning emitted if a named object referenced cannot be found
12881 (resolved) during method execution.
12887 ------------------------------------------
12888 Summary of changes for this label: 9_29_00
12890 New table initialization interfaces: AcpiInitializeSubsystem no
12891 longer has any parameters AcpiFindRootPointer - Find the RSDP (if
12892 necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP-
12893 >RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by
12896 Note: These interface changes require changes to all existing OSDs
12898 The PCI_Config default address space handler is always installed
12899 at the root namespace object.
12901 -------------------------------------------
12902 Summary of changes for this label: 09_15_00
12904 The new initialization architecture is implemented. New
12905 interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize)
12906 AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace
12908 (Namespace is automatically loaded when a table is loaded)
12910 The ACPI_OPERAND_OBJECT has been optimized to shrink its size from
12911 52 bytes to 32 bytes. There is usually one of these for every
12912 namespace object, so the memory savings is significant.
12914 Implemented just-in-time evaluation of the CreateField operators.
12916 Bug fixes for IA-64 support have been integrated.
12918 Additional code review comments have been implemented
12920 The so-called "third pass parse" has been replaced by a final walk
12921 through the namespace to initialize all operation regions (address
12922 spaces) and fields that have not yet been initialized during the
12923 execution of the various _INI and REG methods.
12925 New file - namespace/nsinit.c
12927 -------------------------------------------
12928 Summary of changes for this label: 09_01_00
12930 Namespace manager data structures have been reworked to change the
12931 primary object from a table to a single object. This has
12932 resulted in dynamic memory savings of 3X within the namespace and
12933 2X overall in the ACPI CA subsystem.
12935 Fixed problem where the call to AcpiEvFindPciRootBuses was
12936 inadvertently left commented out.
12938 Reduced the warning count when generating the source with the GCC
12941 Revision numbers added to each module header showing the
12942 SourceSafe version of the file. Please refer to this version
12943 number when giving us feedback or comments on individual modules.
12945 The main object types within the subsystem have been renamed to
12946 clarify their purpose:
12948 ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT
12949 ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT
12950 ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE
12952 NOTE: no changes to the initialization sequence are included in
12955 -------------------------------------------
12956 Summary of changes for this label: 08_23_00
12958 Fixed problem where TerminateControlMethod was being called
12959 multiple times per method
12961 Fixed debugger problem where single stepping caused a semaphore to
12964 Improved performance through additional parse object caching -
12965 added ACPI_EXTENDED_OP type
12967 -------------------------------------------
12968 Summary of changes for this label: 08_10_00
12970 Parser/Interpreter integration: Eliminated the creation of
12971 complete parse trees for ACPI tables and control methods.
12972 Instead, parse subtrees are created and then deleted as soon as
12973 they are processed (Either entered into the namespace or executed
12974 by the interpreter). This reduces the use of dynamic kernel
12975 memory significantly. (about 10X)
12977 Exception codes broken into classes and renumbered. Be sure to
12978 recompile all code that includes acexcep.h. Hopefully we won't
12979 have to renumber the codes again now that they are split into
12980 classes (environment, programmer, AML code, ACPI table, and
12983 Fixed some additional alignment issues in the Resource Manager
12986 Implemented semaphore tracking in the AcpiExec utility, and fixed
12987 several places where mutexes/semaphores were being unlocked
12988 without a corresponding lock operation. There are no known
12989 semaphore or mutex "leaks" at this time.
12991 Fixed the case where an ASL Return operator is used to return an
12994 -------------------------------------------
12995 Summary of changes for this label: 07_28_00
12997 Fixed a problem with the way addresses were calculated in
12998 AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem
12999 manifested itself when a Field was created with WordAccess or
13000 DwordAccess, but the field unit defined within the Field was less
13002 than a Word or Dword.
13004 Fixed a problem in AmlDumpOperands() module's loop to pull
13005 operands off of the operand stack to display information. The
13006 problem manifested itself as a TLB error on 64-bit systems when
13007 accessing an operand stack with two or more operands.
13009 Fixed a problem with the PCI configuration space handlers where
13010 context was getting confused between accesses. This required a
13011 change to the generic address space handler and address space
13012 setup definitions. Handlers now get both a global handler context
13013 (this is the one passed in by the user when executing
13014 AcpiInstallAddressSpaceHandler() and a specific region context
13015 that is unique to each region (For example, the _ADR, _SEG and
13016 _BBN values associated with a specific region). The generic
13017 function definitions have changed to the following:
13019 typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function,
13020 UINT32 Address, UINT32 BitWidth, UINT32 *Value, void
13021 *HandlerContext, // This used to be void *Context void
13022 *RegionContext); // This is an additional parameter
13024 typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE
13025 RegionHandle, UINT32 Function, void *HandlerContext, void
13026 **RegionContext); // This used to be **ReturnContext
13028 -------------------------------------------
13029 Summary of changes for this label: 07_21_00
13031 Major file consolidation and rename. All files within the
13032 interpreter have been renamed as well as most header files. This
13033 was done to prevent collisions with existing files in the host
13034 OSs -- filenames such as "config.h" and "global.h" seem to be
13035 quite common. The VC project files have been updated. All
13036 makefiles will require modification.
13038 The parser/interpreter integration continues in Phase 5 with the
13039 implementation of a complete 2-pass parse (the AML is parsed
13040 twice) for each table; This avoids the construction of a huge
13041 parse tree and therefore reduces the amount of dynamic memory
13042 required by the subsystem. Greater use of the parse object cache
13043 means that performance is unaffected.
13045 Many comments from the two code reviews have been rolled in.
13047 The 64-bit alignment support is complete.
13049 -------------------------------------------
13050 Summary of changes for this label: 06_30_00
13052 With a nod and a tip of the hat to the technology of yesteryear,
13053 we've added support in the source code for 80 column output
13054 devices. The code is now mostly constrained to 80 columns or
13055 less to support environments and editors that 1) cannot display
13056 or print more than 80 characters on a single line, and 2) cannot
13057 disable line wrapping.
13059 A major restructuring of the namespace data structure has been
13060 completed. The result is 1) cleaner and more
13061 understandable/maintainable code, and 2) a significant reduction
13062 in the dynamic memory requirement for each named ACPI object
13065 -------------------------------------------
13066 Summary of changes for this label: 06_23_00
13068 Linux support has been added. In order to obtain approval to get
13069 the ACPI CA subsystem into the Linux kernel, we've had to make
13070 quite a few changes to the base subsystem that will affect all
13071 users (all the changes are generic and OS- independent). The
13072 effects of these global changes have been somewhat far reaching.
13073 Files have been merged and/or renamed and interfaces have been
13074 renamed. The major changes are described below.
13076 Osd* interfaces renamed to AcpiOs* to eliminate namespace
13077 pollution/confusion within our target kernels. All OSD
13078 interfaces must be modified to match the new naming convention.
13080 Files merged across the subsystem. A number of the smaller source
13081 and header files have been merged to reduce the file count and
13082 increase the density of the existing files. There are too many
13083 to list here. In general, makefiles that call out individual
13084 files will require rebuilding.
13086 Interpreter files renamed. All interpreter files now have the
13087 prefix am* instead of ie* and is*.
13089 Header files renamed: The acapi.h file is now acpixf.h. The
13090 acpiosd.h file is now acpiosxf.h. We are removing references to
13091 the acronym "API" since it is somewhat windowsy. The new name is
13092 "external interface" or xface or xf in the filenames.j
13095 All manifest constants have been forced to upper case (some were
13096 mixed case.) Also, the string "ACPI_" has been prepended to many
13097 (not all) of the constants, typedefs, and structs.
13099 The globals "DebugLevel" and "DebugLayer" have been renamed
13100 "AcpiDbgLevel" and "AcpiDbgLayer" respectively.
13102 All other globals within the subsystem are now prefixed with
13103 "AcpiGbl_" Internal procedures within the subsystem are now
13104 prefixed with "Acpi" (with only a few exceptions). The original
13105 two-letter abbreviation for the subcomponent remains after "Acpi"
13106 - for example, CmCallocate became AcpiCmCallocate.
13108 Added a source code translation/conversion utility. Used to
13109 generate the Linux source code, it can be modified to generate
13110 other types of source as well. Can also be used to cleanup
13111 existing source by removing extraneous spaces and blank lines.
13112 Found in tools/acpisrc/*
13114 OsdUnMapMemory was renamed to OsdUnmapMemory and then
13115 AcpiOsUnmapMemory. (UnMap became Unmap).
13117 A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore.
13118 When set to one, this indicates that the caller wants to use the
13120 semaphore as a mutex, not a counting semaphore. ACPI CA uses
13121 both types. However, implementers of this call may want to use
13122 different OS primitives depending on the type of semaphore
13123 requested. For example, some operating systems provide separate
13125 "mutex" and "semaphore" interfaces - where the mutex interface is
13126 much faster because it doesn't have all the overhead of a full
13127 semaphore implementation.
13129 Fixed a deadlock problem where a method that accesses the PCI
13130 address space can block forever if it is the first access to the
13133 -------------------------------------------
13134 Summary of changes for this label: 06_02_00
13136 Support for environments that cannot handle unaligned data
13137 accesses (e.g. firmware and OS environments devoid of alignment
13138 handler technology namely SAL/EFI and the IA-64 Linux kernel) has
13139 been added (via configurable macros) in these three areas: -
13140 Transfer of data from the raw AML byte stream is done via byte
13141 moves instead of word/dword/qword moves. - External objects are
13142 aligned within the user buffer, including package elements (sub-
13143 objects). - Conversion of name strings to UINT32 Acpi Names is now
13146 The Store operator was modified to mimic Microsoft's
13147 implementation when storing to a Buffer Field.
13149 Added a check of the BM_STS bit before entering C3.
13151 The methods subdirectory has been obsoleted and removed. A new
13152 file, cmeval.c subsumes the functionality.
13154 A 16-bit (DOS) version of AcpiExec has been developed. The
13155 makefile is under the acpiexec directory.