1 ----------------------------------------
2 22 September 2011. Summary of changes for version 20110922:
4 This release is available at www.acpica.org/downloads
8 Support for ACPI 5.0 in ACPICA has been underway for several months and will
9 be released at the same time that ACPI 5.0 is officially released.
11 The ACPI 5.0 specification is on track for release in the next few months.
13 1) ACPICA Core Subsystem:
15 Fixed a problem where the maximum sleep time for the Sleep() operator was
16 intended to be limited to two seconds, but was inadvertently limited to 20
19 Linux and Unix makefiles: Added header file dependencies to ensure correct
20 generation of ACPICA core code and utilities. Also simplified the makefiles
21 considerably through the use of the vpath variable to specify search paths.
24 2) iASL Compiler/Disassembler and Tools:
26 iASL: Implemented support to check the access length for all fields created to
27 access named Resource Descriptor fields. For example, if a resource field is
28 defined to be two bits, a warning is issued if a CreateXxxxField() is used
29 with an incorrect bit length. This is implemented for all current resource
30 descriptor names. ACPICA BZ 930.
32 Disassembler: Fixed a byte ordering problem with the output of 24-bit and 56-
35 iASL: Fixed a couple of issues associated with variable-length package
36 objects. 1) properly handle constants like One, Ones, Zero -- do not make a
37 VAR_PACKAGE when these are used as a package length. 2) Allow the VAR_PACKAGE
38 opcode (in addition to PACKAGE) when validating object types for predefined
41 iASL: Emit statistics for all output files (instead of just the ASL input and
42 AML output). Includes listings, hex files, etc.
44 iASL: Added -G option to the table compiler to allow the compilation of custom
45 ACPI tables. The only part of a table that is required is the standard 36-byte
48 AcpiXtract: Ported to the standard ACPICA environment (with ACPICA headers),
49 which also adds correct 64-bit support. Also, now all output filenames are
50 completely lower case.
52 AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when
53 loading table files. A warning is issued for any such tables. The only
54 exception is an FADT. This also fixes a possible fault when attempting to load
55 non-AML tables. ACPICA BZ 932.
57 AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where a
58 missing table terminator could cause a fault when using the -p option.
60 AcpiSrc: Fixed a possible divide-by-zero fault when generating file
63 3) Example Code and Data Size
65 These are the sizes for the OS-independent acpica.lib produced by the
66 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
67 includes the debug output trace mechanism and has a much larger code and data
70 Previous Release (VC 9.0):
71 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
72 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
73 Current Release (VC 9.0):
74 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
75 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
78 ----------------------------------------
79 23 June 2011. Summary of changes for version 20110623:
81 1) ACPI CA Core Subsystem:
83 Updated the predefined name repair mechanism to not attempt repair of a _TSS
84 return object if a _PSS object is present. We can only sort the _TSS return
85 package if there is no _PSS within the same scope. This is because if _PSS is
86 present, the ACPI specification dictates that the _TSS Power Dissipation field
87 is to be ignored, and therefore some BIOSs leave garbage values in the _TSS
88 Power field(s). In this case, it is best to just return the _TSS package as-
89 is. Reported by, and fixed with assistance from Fenghua Yu.
91 Added an option to globally disable the control method return value validation
92 and repair. This runtime option can be used to disable return value repair if
93 this is causing a problem on a particular machine. Also added an option to
94 AcpiExec (-dr) to set this disable flag.
96 All makefiles and project files: Major changes to improve generation of ACPICA
98 Reduce default optimization levels to improve compatibility
99 For Linux, add strict-aliasing=0 for gcc 4
100 Cleanup and simplify use of command line defines
101 Cleanup multithread library support
102 Improve usage messages
104 Linux-specific header: update handling of THREAD_ID and pthread. For the 32-
105 bit case, improve casting to eliminate possible warnings, especially with the
108 Example Code and Data Size: These are the sizes for the OS-independent
109 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
110 version of the code includes the debug output trace mechanism and has a much
111 larger code and data size.
113 Previous Release (VC 9.0):
114 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
115 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
116 Current Release (VC 9.0):
117 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
118 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
120 2) iASL Compiler/Disassembler and Tools:
122 With this release, a new utility named "acpihelp" has been added to the ACPICA
123 package. This utility summarizes the ACPI specification chapters for the ASL
124 and AML languages. It generates under Linux/Unix as well as Windows, and
125 provides the following functionality:
126 Find/display ASL operator(s) -- with description and syntax.
127 Find/display ASL keyword(s) -- with exact spelling and descriptions.
128 Find/display ACPI predefined name(s) -- with description, number
129 of arguments, and the return value data type.
130 Find/display AML opcode name(s) -- with opcode, arguments, and grammar.
131 Decode/display AML opcode -- with opcode name, arguments, and grammar.
133 Service Layers: Make multi-thread support configurable. Conditionally compile
134 the multi-thread support so that threading libraries will not be linked if not
135 necessary. The only tool that requires multi-thread support is AcpiExec.
137 iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions of
138 Bison appear to want the interface to yyerror to be a const char * (or at
139 least this is a problem when generating iASL on some systems.) ACPICA BZ 923
142 Tools: Fix for systems where O_BINARY is not defined. Only used for Windows
143 versions of the tools.
145 ----------------------------------------
146 27 May 2011. Summary of changes for version 20110527:
148 1) ACPI CA Core Subsystem:
150 ASL Load() operator: Reinstate most restrictions on the incoming ACPI table
151 signature. Now, only allow SSDT, OEMx, and a null signature. History:
152 1) Originally, we checked the table signature for "SSDT" or "PSDT".
153 (PSDT is now obsolete.)
154 2) We added support for OEMx tables, signature "OEM" plus a fourth
155 "don't care" character.
156 3) Valid tables were encountered with a null signature, so we just
157 gave up on validating the signature, (05/2008).
158 4) We encountered non-AML tables such as the MADT, which caused
159 interpreter errors and kernel faults. So now, we once again allow
160 only SSDT, OEMx, and now, also a null signature. (05/2011).
162 Added the missing _TDL predefined name to the global name list in order to
163 enable validation. Affects both the core ACPICA code and the iASL compiler.
165 Example Code and Data Size: These are the sizes for the OS-independent
166 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
167 version of the code includes the debug output trace mechanism and has a much
168 larger code and data size.
170 Previous Release (VC 9.0):
171 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
172 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
173 Current Release (VC 9.0):
174 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
175 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
177 2) iASL Compiler/Disassembler and Tools:
179 Debugger/AcpiExec: Implemented support for "complex" method arguments on the
180 debugger command line. This adds support beyond simple integers -- including
181 Strings, Buffers, and Packages. Includes support for nested packages.
182 Increased the default command line buffer size to accommodate these arguments.
183 See the ACPICA reference for details and syntax. ACPICA BZ 917.
185 Debugger/AcpiExec: Implemented support for "default" method arguments for the
186 Execute/Debug command. Now, the debugger will always invoke a control method
187 with the required number of arguments -- even if the command line specifies
188 none or insufficient arguments. It uses default integer values for any missing
189 arguments. Also fixes a bug where only six method arguments maximum were
190 supported instead of the required seven.
192 Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine and
193 also return status in order to prevent buffer overruns. See the ACPICA
194 reference for details and syntax. ACPICA BZ 921
196 iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and
197 makefiles to simplify support for the two different but similar parser
198 generators, bison and yacc.
200 Updated the generic unix makefile for gcc 4. The default gcc version is now
201 expected to be 4 or greater, since options specific to gcc 4 are used.
203 ----------------------------------------
204 13 April 2011. Summary of changes for version 20110413:
206 1) ACPI CA Core Subsystem:
208 Implemented support to execute a so-called "orphan" _REG method under the EC
209 device. This change will force the execution of a _REG method underneath the
211 device even if there is no corresponding operation region of type
212 EmbeddedControl. Fixes a problem seen on some machines and apparently is
213 compatible with Windows behavior. ACPICA BZ 875.
215 Added more predefined methods that are eligible for automatic NULL package
216 element removal. This change adds another group of predefined names to the
218 of names that can be repaired by having NULL package elements dynamically
219 removed. This group are those methods that return a single variable-length
220 package containing simple data types such as integers, buffers, strings. This
221 includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx, _PSL,
223 and _TZD. ACPICA BZ 914.
225 Split and segregated all internal global lock functions to a new file,
228 Updated internal address SpaceID for DataTable regions. Moved this internal
230 id in preparation for ACPI 5.0 changes that will include some new space IDs.
232 change should not affect user/host code.
234 Example Code and Data Size: These are the sizes for the OS-independent
236 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug version of
237 the code includes the debug output trace mechanism and has a much larger code
241 Previous Release (VC 9.0):
242 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
243 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
244 Current Release (VC 9.0):
245 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
246 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
248 2) iASL Compiler/Disassembler and Tools:
250 iASL/DTC: Major update for new grammar features. Allow generic data types in
251 custom ACPI tables. Field names are now optional. Any line can be split to
252 multiple lines using the continuation char (\). Large buffers now use line-
253 continuation character(s) and no colon on the continuation lines. See the
255 update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob Moore.
257 iASL: Mark ASL "Return()" and the simple "Return" as "Null" return statements.
258 Since the parser stuffs a "zero" as the return value for these statements (due
260 the underlying AML grammar), they were seen as "return with value" by the iASL
261 semantic checking. They are now seen correctly as "null" return statements.
263 iASL: Check if a_REG declaration has a corresponding Operation Region. Adds a
264 check for each _REG to ensure that there is in fact a corresponding operation
265 region declaration in the same scope. If not, the _REG method is not very
267 since it probably won't be executed. ACPICA BZ 915.
269 iASL/DTC: Finish support for expression evaluation. Added a new expression
271 that implements c-style operator precedence and parenthesization. ACPICA
275 Disassembler/DTC: Remove support for () and <> style comments in data tables.
277 that DTC has full expression support, we don't want to have comment strings
279 start with a parentheses or a less-than symbol. Now, only the standard /* and
281 comments are supported, as well as the bracket [] comments.
283 AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have
285 headers in the acpidump file. Update the header validation to support these
286 tables. Problem introduced in previous AcpiXtract version in the change to
287 support "wrong checksum" error messages emitted by acpidump utility.
289 iASL: Add a * option to generate all template files (as a synonym for ALL) as
291 "iasl -T *" or "iasl -T ALL".
293 iASL/DTC: Do not abort compiler on fatal errors. We do not want to completely
294 abort the compiler on "fatal" errors, simply should abort the current compile.
295 This allows multiple compiles with a single (possibly wildcard) compiler
298 ----------------------------------------
299 16 March 2011. Summary of changes for version 20110316:
301 1) ACPI CA Core Subsystem:
303 Fixed a problem caused by a _PRW method appearing at the namespace root scope
304 during the setup of wake GPEs. A fault could occur if a _PRW directly under
306 root object was passed to the AcpiSetupGpeForWake interface. Lin Ming.
308 Implemented support for "spurious" Global Lock interrupts. On some systems, a
309 global lock interrupt can occur without the pending flag being set. Upon a GL
310 interrupt, we now ensure that a thread is actually waiting for the lock before
311 signaling GL availability. Rafael Wysocki, Bob Moore.
313 Example Code and Data Size: These are the sizes for the OS-independent
315 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug version of
316 the code includes the debug output trace mechanism and has a much larger code
320 Previous Release (VC 9.0):
321 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
322 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
323 Current Release (VC 9.0):
324 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
325 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
327 2) iASL Compiler/Disassembler and Tools:
329 Implemented full support for the "SLIC" ACPI table. Includes support in the
330 header files, disassembler, table compiler, and template generator. Bob Moore,
333 AcpiXtract: Correctly handle embedded comments and messages from AcpiDump.
334 Apparently some or all versions of acpidump will occasionally emit a comment
336 "Wrong checksum", etc., into the dump file. This was causing problems for
337 AcpiXtract. ACPICA BZ 905.
339 iASL: Fix the Linux makefile by removing an inadvertent double file inclusion.
342 AcpiExec: Update installation of operation region handlers. Install one
344 for a user-defined address space. This is used by the ASL test suite (ASLTS).
346 ----------------------------------------
347 11 February 2011. Summary of changes for version 20110211:
349 1) ACPI CA Core Subsystem:
351 Added a mechanism to defer _REG methods for some early-installed handlers.
352 Most user handlers should be installed before call to AcpiEnableSubsystem.
353 However, Event handlers and region handlers should be installed after
354 AcpiInitializeObjects. Override handlers for the "default" regions should be
355 installed early, however. This change executes all _REG methods for the
356 default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any
357 chicken/egg issues between them. ACPICA BZ 848.
359 Implemented an optimization for GPE detection. This optimization will simply
360 ignore GPE registers that contain no enabled GPEs -- there is no need to
361 read the register since this information is available internally. This
362 becomes more important on machines with a large GPE space. ACPICA bugzilla
363 884. Lin Ming. Suggestion from Joe Liu.
365 Removed all use of the highly unreliable FADT revision field. The revision
366 number in the FADT has been found to be completely unreliable and cannot be
367 trusted. Only the actual table length can be used to infer the version. This
368 change updates the ACPICA core and the disassembler so that both no longer
369 even look at the FADT version and instead depend solely upon the FADT
372 Fix an unresolved name issue for the no-debug and no-error-message source
373 generation cases. The _AcpiModuleName was left undefined in these cases, but
374 it is actually needed as a parameter to some interfaces. Define
375 _AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888.
377 Split several large files (makefiles and project files updated)
378 utglobal.c -> utdecode.c
379 dbcomds.c -> dbmethod.c dbnames.c
380 dsopcode.c -> dsargs.c dscontrol.c
381 dsload.c -> dsload2.c
382 aslanalyze.c -> aslbtypes.c aslwalks.c
384 Example Code and Data Size: These are the sizes for the OS-independent
385 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
386 debug version of the code includes the debug output trace mechanism and has
387 a much larger code and data size.
389 Previous Release (VC 9.0):
390 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
391 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
392 Current Release (VC 9.0):
393 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
394 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
396 2) iASL Compiler/Disassembler and Tools:
398 iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__.
399 These are useful C-style macros with the standard definitions. ACPICA
402 iASL/DTC: Added support for integer expressions and labels. Support for full
403 expressions for all integer fields in all ACPI tables. Support for labels in
404 "generic" portions of tables such as UEFI. See the iASL reference manual.
406 Debugger: Added a command to display the status of global handlers. The
407 "handlers" command will display op region, fixed event, and miscellaneous
408 global handlers. installation status -- and for op regions, whether default
409 or user-installed handler will be used.
411 iASL: Warn if reserved method incorrectly returns a value. Many predefined
412 names are defined such that they do not return a value. If implemented as a
413 method, issue a warning if such a name explicitly returns a value. ACPICA
416 iASL: Added detection of GPE method name conflicts. Detects a conflict where
417 there are two GPE methods of the form _Lxy and _Exy in the same scope. (For
418 example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848.
420 iASL/DTC: Fixed a couple input scanner issues with comments and line
421 numbers. Comment remover could get confused and miss a comment ending. Fixed
422 a problem with line counter maintenance.
424 iASL/DTC: Reduced the severity of some errors from fatal to error. There is
425 no need to abort on simple errors within a field definition.
427 Debugger: Simplified the output of the help command. All help output now in
428 a single screen, instead of help subcommands. ACPICA Bugzilla 897.
430 ----------------------------------------
431 12 January 2011. Summary of changes for version 20110112:
433 1) ACPI CA Core Subsystem:
435 Fixed a race condition between method execution and namespace walks that can
436 possibly cause a fault. The problem was apparently introduced in version
437 20100528 as a result of a performance optimization that reduces the number of
438 namespace walks upon method exit by using the delete_namespace_subtree
439 function instead of the delete_namespace_by_owner function used previously.
440 Bug is a missing namespace lock in the delete_namespace_subtree function.
441 dana.myers@oracle.com
443 Fixed several issues and a possible fault with the automatic "serialized"
444 method support. History: This support changes a method to "serialized" on the
445 fly if the method generates an AE_ALREADY_EXISTS error, indicating the
446 possibility that it cannot handle reentrancy. This fix repairs a couple of
447 issues seen in the field, especially on machines with many cores:
449 1) Delete method children only upon the exit of the last thread,
450 so as to not delete objects out from under other running threads
451 (and possibly causing a fault.)
452 2) Set the "serialized" bit for the method only upon the exit of the
453 Last thread, so as to not cause deadlock when running threads
455 3) Cleanup the use of the AML "MethodFlags" and internal method flags
456 so that there is no longer any confusion between the two.
458 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com.
460 Debugger: Now lock the namespace for duration of a namespace dump. Prevents
461 issues if the namespace is changing dynamically underneath the debugger.
462 Especially affects temporary namespace nodes, since the debugger displays
465 Updated the ordering of include files. The ACPICA headers should appear
466 before any compiler-specific headers (stdio.h, etc.) so that acenv.h can set
467 any necessary compiler-specific defines, etc. Affects the ACPI-related tools
470 Updated all ACPICA copyrights and signons to 2011. Added the 2011 copyright
471 to all module headers and signons, including the Linux header. This affects
472 virtually every file in the ACPICA core subsystem, iASL compiler, and all
475 Added project files for MS Visual Studio 2008 (VC++ 9.0). The original
476 project files for VC++ 6.0 are now obsolete. New project files can be found
477 under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for
480 Example Code and Data Size: These are the sizes for the OS-independent
481 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
482 debug version of the code includes the debug output trace mechanism and has a
483 much larger code and data size.
485 Previous Release (VC 6.0):
486 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
487 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
488 Current Release (VC 9.0):
489 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
490 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
492 2) iASL Compiler/Disassembler and Tools:
494 iASL: Added generic data types to the Data Table compiler. Add "generic" data
495 types such as UINT32, String, Unicode, etc., to simplify the generation of
496 platform-defined tables such as UEFI. Lin Ming.
498 iASL: Added listing support for the Data Table Compiler. Adds listing support
499 (-l) to display actual binary output for each line of input code.
501 ----------------------------------------
502 09 December 2010. Summary of changes for version 20101209:
504 1) ACPI CA Core Subsystem:
506 Completed the major overhaul of the GPE support code that was begun in July
507 2010. Major features include: removal of _PRW execution in ACPICA (host
508 executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing,
509 changes to existing interfaces, simplification of GPE handler operation, and
510 a handful of new interfaces:
516 One new file, evxfgpe.c to consolidate all external GPE interfaces.
518 See the ACPICA Programmer Reference for full details and programming
519 information. See the new section 4.4 "General Purpose Event (GPE) Support"
520 for a full overview, and section 8.7 "ACPI General Purpose Event Management"
521 for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin Ming,
522 Bob Moore, Rafael Wysocki.
524 Implemented a new GPE feature for Windows compatibility, the "Implicit Wake
525 GPE Notify". This feature will automatically issue a Notify(2) on a device
526 when a Wake GPE is received if there is no corresponding GPE method or
527 handler. ACPICA BZ 870.
529 Fixed a problem with the Scope() operator during table parse and load phase.
530 During load phase (table load or method execution), the scope operator should
531 not enter the target into the namespace. Instead, it should open a new scope
532 at the target location. Linux BZ 19462, ACPICA BZ 882.
534 Example Code and Data Size: These are the sizes for the OS-independent
535 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
536 debug version of the code includes the debug output trace mechanism and has a
537 much larger code and data size.
540 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
541 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
543 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
544 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
546 2) iASL Compiler/Disassembler and Tools:
548 iASL: Relax the alphanumeric restriction on _CID strings. These strings are
549 "bus-specific" per the ACPI specification, and therefore any characters are
550 acceptable. The only checks that can be performed are for a null string and
551 perhaps for a leading asterisk. ACPICA BZ 886.
553 iASL: Fixed a problem where a syntax error that caused a premature EOF
554 condition on the source file emitted a very confusing error message. The
555 premature EOF is now detected correctly. ACPICA BZ 891.
557 Disassembler: Decode the AccessSize within a Generic Address Structure (byte
558 access, word access, etc.) Note, this field does not allow arbitrary bit
559 access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword.
561 New: AcpiNames utility - Example namespace dump utility. Shows an example of
562 ACPICA configuration for a minimal namespace dump utility. Uses table and
563 namespace managers, but no AML interpreter. Does not add any functionality
564 over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to
565 partition and configure ACPICA. ACPICA BZ 883.
567 AML Debugger: Increased the debugger buffer size for method return objects.
568 Was 4K, increased to 16K. Also enhanced error messages for debugger method
569 execution, including the buffer overflow case.
571 ----------------------------------------
572 13 October 2010. Summary of changes for version 20101013:
574 1) ACPI CA Core Subsystem:
576 Added support to clear the PCIEXP_WAKE event. When clearing ACPI events, now
577 clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via
578 HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880.
580 Changed the type of the predefined namespace object _TZ from ThermalZone to
581 Device. This was found to be confusing to the host software that processes
582 the various thermal zones, since _TZ is not really a ThermalZone. However, a
583 Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui
586 Added Windows Vista SP2 to the list of supported _OSI strings. The actual
587 string is "Windows 2006 SP2".
589 Eliminated duplicate code in AcpiUtExecute* functions. Now that the nsrepair
590 code automatically repairs _HID-related strings, this type of code is no
591 longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ 878.
593 Example Code and Data Size: These are the sizes for the OS-independent
594 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
595 debug version of the code includes the debug output trace mechanism and has a
596 much larger code and data size.
599 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
600 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
602 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
603 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
605 2) iASL Compiler/Disassembler and Tools:
607 iASL: Implemented additional compile-time validation for _HID strings. The
608 non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the length of
609 the string must be exactly seven or eight characters. For both _HID and _CID
610 strings, all characters must be alphanumeric. ACPICA BZ 874.
612 iASL: Allow certain "null" resource descriptors. Some BIOS code creates
613 descriptors that are mostly or all zeros, with the expectation that they will
614 be filled in at runtime. iASL now allows this as long as there is a "resource
615 tag" (name) associated with the descriptor, which gives the ASL a handle
616 needed to modify the descriptor. ACPICA BZ 873.
618 Added single-thread support to the generic Unix application OSL. Primarily
619 for iASL support, this change removes the use of semaphores in the single-
620 threaded ACPICA tools/applications - increasing performance. The
621 _MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED
622 option. ACPICA BZ 879.
624 AcpiExec: several fixes for the 64-bit version. Adds XSDT support and support
625 for 64-bit DSDT/FACS addresses in the FADT. Lin Ming.
627 iASL: Moved all compiler messages to a new file, aslmessages.h.
629 ----------------------------------------
630 15 September 2010. Summary of changes for version 20100915:
632 1) ACPI CA Core Subsystem:
634 Removed the AcpiOsDerivePciId OSL interface. The various host implementations
635 of this function were not OS-dependent and are now obsolete and can be
636 removed from all host OSLs. This function has been replaced by
637 AcpiHwDerivePciId, which is now part of the ACPICA core code.
638 AcpiHwDerivePciId has been implemented without recursion. Adds one new
639 module, hwpci.c. ACPICA BZ 857.
641 Implemented a dynamic repair for _HID and _CID strings. The following
642 problems are now repaired at runtime: 1) Remove a leading asterisk in the
643 string, and 2) the entire string is uppercased. Both repairs are in
644 accordance with the ACPI specification and will simplify host driver code.
647 The ACPI_THREAD_ID type is no longer configurable, internally it is now
648 always UINT64. This simplifies the ACPICA code, especially any printf output.
649 UINT64 is the only common data type for all thread_id types across all
650 operating systems. It is now up to the host OSL to cast the native thread_id
651 type to UINT64 before returning the value to ACPICA (via AcpiOsGetThreadId).
654 Added the ACPI_INLINE type to enhance the ACPICA configuration. The "inline"
655 keyword is not standard across compilers, and this type allows inline to be
656 configured on a per-compiler basis. Lin Ming.
658 Made the system global AcpiGbl_SystemAwakeAndRunning publically available.
659 Added an extern for this boolean in acpixf.h. Some hosts utilize this value
660 during suspend/restore operations. ACPICA BZ 869.
662 All code that implements error/warning messages with the "ACPI:" prefix has
663 been moved to a new module, utxferror.c.
665 The UINT64_OVERLAY was moved to utmath.c, which is the only module where it
666 is used. ACPICA BZ 829. Lin Ming, Bob Moore.
668 Example Code and Data Size: These are the sizes for the OS-independent
669 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
670 debug version of the code includes the debug output trace mechanism and has a
671 much larger code and data size.
674 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
675 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
677 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
678 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
680 2) iASL Compiler/Disassembler and Tools:
682 iASL/Disassembler: Write ACPI errors to stderr instead of the output file.
683 This keeps the output files free of random error messages that may originate
684 from within the namespace/interpreter code. Used this opportunity to merge
685 all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ
686 866. Lin Ming, Bob Moore.
688 Tools: update some printfs for ansi warnings on size_t. Handle width change
689 of size_t on 32-bit versus 64-bit generations. Lin Ming.
691 ----------------------------------------
692 06 August 2010. Summary of changes for version 20100806:
694 1) ACPI CA Core Subsystem:
696 Designed and implemented a new host interface to the _OSI support code. This
697 will allow the host to dynamically add or remove multiple _OSI strings, as
698 well as install an optional handler that is called for each _OSI invocation.
699 Also added a new AML debugger command, 'osi' to display and modify the global
700 _OSI string table, and test support in the AcpiExec utility. See the ACPICA
701 reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836.
703 AcpiInstallInterface - Add an _OSI string.
704 AcpiRemoveInterface - Delete an _OSI string.
705 AcpiInstallInterfaceHandler - Install optional _OSI handler.
707 AcpiOsValidateInterface - no longer used.
709 source/components/utilities/utosi.c
711 Re-introduced the support to enable multi-byte transfers for Embedded
712 Controller (EC) operation regions. A reported problem was found to be a bug
713 in the host OS, not in the multi-byte support. Previously, the maximum data
714 size passed to the EC operation region handler was a single byte. There are
715 often EC Fields larger than one byte that need to be transferred, and it is
716 useful for the EC driver to lock these as a single transaction. This change
717 enables single transfers larger than 8 bits. This effectively changes the
718 access to the EC space from ByteAcc to AnyAcc, and will probably require
719 changes to the host OS Embedded Controller driver to enable 16/32/64/256-bit
720 transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming.
722 Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The
723 prototype in acpiosxf.h had the output value pointer as a (void *).
724 It should be a (UINT64 *). This may affect some host OSL code.
726 Fixed a couple problems with the recently modified Linux makefiles for iASL
727 and AcpiExec. These new makefiles place the generated object files in the
728 local directory so that there can be no collisions between the files that are
729 shared between them that are compiled with different options.
731 Example Code and Data Size: These are the sizes for the OS-independent
732 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
733 debug version of the code includes the debug output trace mechanism and has a
734 much larger code and data size.
737 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
738 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
740 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
741 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
743 2) iASL Compiler/Disassembler and Tools:
745 iASL/Disassembler: Added a new option (-da, "disassemble all") to load the
746 namespace from and disassemble an entire group of AML files. Useful for
747 loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn) and
748 disassembling with one simple command. ACPICA BZ 865. Lin Ming.
750 iASL: Allow multiple invocations of -e option. This change allows multiple
751 uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ 834.
754 ----------------------------------------
755 02 July 2010. Summary of changes for version 20100702:
757 1) ACPI CA Core Subsystem:
759 Implemented several updates to the recently added GPE reference count
760 support. The model for "wake" GPEs is changing to give the host OS complete
761 control of these GPEs. Eventually, the ACPICA core will not execute any _PRW
762 methods, since the host already must execute them. Also, additional changes
763 were made to help ensure that the reference counts are kept in proper
764 synchronization with reality. Rafael J. Wysocki.
766 1) Ensure that GPEs are not enabled twice during initialization.
767 2) Ensure that GPE enable masks stay in sync with the reference count.
768 3) Do not inadvertently enable GPEs when writing GPE registers.
769 4) Remove the internal wake reference counter and add new AcpiGpeWakeup
770 interface. This interface will set or clear individual GPEs for wakeup.
771 5) Remove GpeType argument from AcpiEnable and AcpiDisable. These interfaces
772 are now used for "runtime" GPEs only.
774 Changed the behavior of the GPE install/remove handler interfaces. The GPE is
775 no longer disabled during this process, as it was found to cause problems on
776 some machines. Rafael J. Wysocki.
778 Reverted a change introduced in version 20100528 to enable Embedded
779 Controller multi-byte transfers. This change was found to cause problems with
780 Index Fields and possibly Bank Fields. It will be reintroduced when these
781 problems have been resolved.
783 Fixed a problem with references to Alias objects within Package Objects. A
784 reference to an Alias within the definition of a Package was not always
785 resolved properly. Aliases to objects like Processors, Thermal zones, etc.
786 were resolved to the actual object instead of a reference to the object as it
787 should be. Package objects are only allowed to contain integer, string,
788 buffer, package, and reference objects. Redhat bugzilla 608648.
790 Example Code and Data Size: These are the sizes for the OS-independent
791 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
792 debug version of the code includes the debug output trace mechanism and has a
793 much larger code and data size.
796 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
797 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
799 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
800 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
802 2) iASL Compiler/Disassembler and Tools:
804 iASL: Implemented a new compiler subsystem to allow definition and
805 compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc. These
806 are called "ACPI Data Tables", and the new compiler is the "Data Table
807 Compiler". This compiler is intended to simplify the existing error-prone
808 process of creating these tables for the BIOS, as well as allowing the
809 disassembly, modification, recompilation, and override of existing ACPI data
810 tables. See the iASL User Guide for detailed information.
812 iASL: Implemented a new Template Generator option in support of the new Data
813 Table Compiler. This option will create examples of all known ACPI tables
814 that can be used as the basis for table development. See the iASL
815 documentation and the -T option.
817 Disassembler and headers: Added support for the WDDT ACPI table (Watchdog
820 Updated the Linux makefiles for iASL and AcpiExec to place the generated
821 object files in the local directory so that there can be no collisions
822 between the shared files between them that are generated with different
825 Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec. Use
826 the #define __APPLE__ to enable this support.
828 ----------------------------------------
829 28 May 2010. Summary of changes for version 20100528:
831 Note: The ACPI 4.0a specification was released on April 5, 2010 and is
832 available at www.acpi.info. This is primarily an errata release.
834 1) ACPI CA Core Subsystem:
836 Undefined ACPI tables: We are looking for the definitions for the following
837 ACPI tables that have been seen in the field: ATKG, IEIT, GSCI.
839 Implemented support to enable multi-byte transfers for Embedded Controller
840 (EC) operation regions. Previously, the maximum data size passed to the EC
841 operation region handler was a single byte. There are often EC Fields larger
842 than one byte that need to be transferred, and it is useful for the EC driver
843 to lock these as a single transaction. This change enables single transfers
844 larger than 8 bits. This effectively changes the access to the EC space from
845 ByteAcc to AnyAcc, and will probably require changes to the host OS Embedded
846 Controller driver to enable 16/32/64/256-bit transfers in addition to 8-bit
847 transfers. Alexey Starikovskiy, Lin Ming
849 Implemented a performance enhancement for namespace search and access. This
850 change enhances the performance of namespace searches and walks by adding a
851 backpointer to the parent in each namespace node. On large namespaces, this
852 change can improve overall ACPI performance by up to 9X. Adding a pointer to
853 each namespace node increases the overall size of the internal namespace by
854 about 5%, since each namespace entry usually consists of both a namespace
855 node and an ACPI operand object. However, this is the first growth of the
856 namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy.
858 Implemented a performance optimization that reduces the number of namespace
859 walks. On control method exit, only walk the namespace if the method is known
860 to have created namespace objects outside of its local scope. Previously, the
861 entire namespace was traversed on each control method exit. This change can
862 improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob Moore.
864 Added support to truncate I/O addresses to 16 bits for Windows compatibility.
865 Some ASL code has been seen in the field that inadvertently has bits set
866 above bit 15. This feature is optional and is enabled if the BIOS requests
867 any Windows OSI strings. It can also be enabled by the host OS. Matthew
870 Added support to limit the maximum time for the ASL Sleep() operator. To
871 prevent accidental deep sleeps, limit the maximum time that Sleep() will
872 actually sleep. Configurable, the default maximum is two seconds. ACPICA
875 Added run-time validation support for the _WDG and_WED Microsoft predefined
876 methods. These objects are defined by "Windows Instrumentation", and are not
877 part of the ACPI spec. ACPICA BZ 860.
879 Expanded all statistic counters used during namespace and device
880 initialization from 16 to 32 bits in order to support very large namespaces.
882 Replaced all instances of %d in printf format specifiers with %u since nearly
883 all integers in ACPICA are unsigned.
885 Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly returned
888 Example Code and Data Size: These are the sizes for the OS-independent
889 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
890 debug version of the code includes the debug output trace mechanism and has a
891 much larger code and data size.
894 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
895 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
897 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
898 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
900 2) iASL Compiler/Disassembler and Tools:
902 iASL: Added compiler support for the _WDG and_WED Microsoft predefined
903 methods. These objects are defined by "Windows Instrumentation", and are not
904 part of the ACPI spec. ACPICA BZ 860.
906 AcpiExec: added option to disable the memory tracking mechanism. The -dt
907 option will disable the tracking mechanism, which improves performance
910 AcpiExec: Restructured the command line options into -d (disable) and -e
913 ----------------------------------------
914 28 April 2010. Summary of changes for version 20100428:
916 1) ACPI CA Core Subsystem:
918 Implemented GPE support for dynamically loaded ACPI tables. For all GPEs,
919 including FADT-based and GPE Block Devices, execute any _PRW methods in the
920 new table, and process any _Lxx/_Exx GPE methods in the new table. Any
921 runtime GPE that is referenced by an _Lxx/_Exx method in the new table is
922 immediately enabled. Handles the FADT-defined GPEs as well as GPE Block
923 Devices. Provides compatibility with other ACPI implementations. Two new
924 files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob Moore.
926 Fixed a regression introduced in version 20100331 within the table manager
927 where initial table loading could fail. This was introduced in the fix for
928 AcpiReallocateRootTable. Also, renamed some of fields in the table manager
929 data structures to clarify their meaning and use.
931 Fixed a possible allocation overrun during internal object copy in
932 AcpiUtCopySimpleObject. The original code did not correctly handle the case
933 where the object to be copied was a namespace node. Lin Ming. ACPICA BZ 847.
935 Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a
936 possible access beyond end-of-allocation. Also, now fully validate descriptor
937 (size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847
939 Example Code and Data Size: These are the sizes for the OS-independent
940 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
941 debug version of the code includes the debug output trace mechanism and has a
942 much larger code and data size.
945 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
946 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
948 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
949 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
951 2) iASL Compiler/Disassembler and Tools:
953 iASL: Implemented Min/Max/Len/Gran validation for address resource
954 descriptors. This change implements validation for the address fields that
955 are common to all address-type resource descriptors. These checks are
956 implemented: Checks for valid Min/Max, length within the Min/Max window,
957 valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as per
958 table 6-40 in the ACPI 4.0a specification. Also split the large aslrestype1.c
959 and aslrestype2.c files into five new files. ACPICA BZ 840.
961 iASL: Added support for the _Wxx predefined names. This support was missing
962 and these names were not recognized by the compiler as valid predefined
963 names. ACPICA BZ 851.
965 iASL: Added an error for all predefined names that are defined to return no
966 value and thus must be implemented as Control Methods. These include all of
967 the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous
968 names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856.
970 iASL: Implemented the -ts option to emit hex AML data in ASL format, as an
971 ASL Buffer. Allows ACPI tables to be easily included within ASL files, to be
972 dynamically loaded via the Load() operator. Also cleaned up output for the -
973 ta and -tc options. ACPICA BZ 853.
975 Tests: Added a new file with examples of extended iASL error checking.
976 Demonstrates the advanced error checking ability of the iASL compiler.
977 Available at tests/misc/badcode.asl.
979 ----------------------------------------
980 31 March 2010. Summary of changes for version 20100331:
982 1) ACPI CA Core Subsystem:
984 Completed a major update for the GPE support in order to improve support for
985 shared GPEs and to simplify both host OS and ACPICA code. Added a reference
986 count mechanism to support shared GPEs that require multiple device drivers.
987 Several external interfaces have changed. One external interface has been
988 removed. One new external interface was added. Most of the GPE external
989 interfaces now use the GPE spinlock instead of the events mutex (and the
990 Flags parameter for many GPE interfaces has been removed.) See the updated
991 ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore, Rafael
992 Wysocki. ACPICA BZ 831.
995 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus
1001 Implemented write support for DataTable operation regions. These regions are
1002 defined via the DataTableRegion() operator. Previously, only read support was
1003 implemented. The ACPI specification allows DataTableRegions to be read/write,
1006 Implemented a new subsystem option to force a copy of the DSDT to local
1007 memory. Optionally copy the entire DSDT to local memory (instead of simply
1008 mapping it.) There are some (albeit very rare) BIOSs that corrupt or replace
1009 the original DSDT, creating the need for this option. Default is FALSE, do
1012 Implemented detection of a corrupted or replaced DSDT. This change adds
1013 support to detect a DSDT that has been corrupted and/or replaced from outside
1014 the OS (by firmware). This is typically catastrophic for the system, but has
1015 been seen on some machines. Once this problem has been detected, the DSDT
1016 copy option can be enabled via system configuration. Lin Ming, Bob Moore.
1018 Fixed two problems with AcpiReallocateRootTable during the root table copy.
1019 When copying the root table to the new allocation, the length used was
1020 incorrect. The new size was used instead of the current table size, meaning
1021 too much data was copied. Also, the count of available slots for ACPI tables
1022 was not set correctly. Alexey Starikovskiy, Bob Moore.
1024 Example Code and Data Size: These are the sizes for the OS-independent
1025 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1026 debug version of the code includes the debug output trace mechanism and has a
1027 much larger code and data size.
1030 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
1031 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
1033 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
1034 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
1036 2) iASL Compiler/Disassembler and Tools:
1038 iASL: Implement limited typechecking for values returned from predefined
1039 control methods. The type of any returned static (unnamed) object is now
1040 validated. For example, Return(1). ACPICA BZ 786.
1042 iASL: Fixed a predefined name object verification regression. Fixes a problem
1043 introduced in version 20100304. An error is incorrectly generated if a
1044 predefined name is declared as a static named object with a value defined
1045 using the keywords "Zero", "One", or "Ones". Lin Ming.
1047 iASL: Added Windows 7 support for the -g option (get local ACPI tables) by
1048 reducing the requested registry access rights. ACPICA BZ 842.
1050 Disassembler: fixed a possible fault when generating External() statements.
1051 Introduced in commit ae7d6fd: Properly handle externals with parent-prefix
1052 (carat). Fixes a string length allocation calculation. Lin Ming.
1054 ----------------------------------------
1055 04 March 2010. Summary of changes for version 20100304:
1057 1) ACPI CA Core Subsystem:
1059 Fixed a possible problem with the AML Mutex handling function
1060 AcpiExReleaseMutex where the function could fault under the very rare
1061 condition when the interpreter has blocked, the interpreter lock is released,
1062 the interpreter is then reentered via the same thread, and attempts to
1063 acquire an AML mutex that was previously acquired. FreeBSD report 140979. Lin
1066 Implemented additional configuration support for the AML "Debug Object".
1067 Output from the debug object can now be enabled via a global variable,
1068 AcpiGbl_EnableAmlDebugObject. This will assist with remote machine debugging.
1069 This debug output is now available in the release version of ACPICA instead
1070 of just the debug version. Also, the entire debug output module can now be
1071 configured out of the ACPICA build if desired. One new file added,
1072 executer/exdebug.c. Lin Ming, Bob Moore.
1074 Added header support for the ACPI MCHI table (Management Controller Host
1075 Interface Table). This table was added in ACPI 4.0, but the defining document
1076 has only recently become available.
1078 Standardized output of integer values for ACPICA warnings/errors. Always use
1079 0x prefix for hex output, always use %u for unsigned integer decimal output.
1080 Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about 400
1081 invocations.) These invocations were converted from the original
1082 ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835.
1084 Example Code and Data Size: These are the sizes for the OS-independent
1085 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1086 debug version of the code includes the debug output trace mechanism and has a
1087 much larger code and data size.
1090 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
1091 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
1093 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
1094 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
1096 2) iASL Compiler/Disassembler and Tools:
1098 iASL: Implemented typechecking support for static (non-control method)
1099 predefined named objects that are declared with the Name() operator. For
1100 example, the type of this object is now validated to be of type Integer:
1101 Name(_BBN, 1). This change migrates the compiler to using the core predefined
1102 name table instead of maintaining a local version. Added a new file,
1103 aslpredef.c. ACPICA BZ 832.
1105 Disassembler: Added support for the ACPI 4.0 MCHI table.
1107 ----------------------------------------
1108 21 January 2010. Summary of changes for version 20100121:
1110 1) ACPI CA Core Subsystem:
1112 Added the 2010 copyright to all module headers and signons. This affects
1113 virtually every file in the ACPICA core subsystem, the iASL compiler, the
1114 tools/utilities, and the test suites.
1116 Implemented a change to the AcpiGetDevices interface to eliminate unnecessary
1117 invocations of the _STA method. In the case where a specific _HID is
1118 requested, do not run _STA until a _HID match is found. This eliminates
1119 potentially dozens of _STA calls during a search for a particular device/HID,
1120 which in turn can improve boot times. ACPICA BZ 828. Lin Ming.
1122 Implemented an additional repair for predefined method return values. Attempt
1123 to repair unexpected NULL elements within returned Package objects. Create an
1124 Integer of value zero, a NULL String, or a zero-length Buffer as appropriate.
1125 ACPICA BZ 818. Lin Ming, Bob Moore.
1127 Removed the obsolete ACPI_INTEGER data type. This type was introduced as the
1128 code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0 (with
1129 64-bit AML integers). It is now obsolete and this change removes it from the
1130 ACPICA code base, replaced by UINT64. The original typedef has been retained
1131 for now for compatibility with existing device driver code. ACPICA BZ 824.
1133 Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field in
1134 the parse tree object.
1136 Added additional warning options for the gcc-4 generation. Updated the source
1137 accordingly. This includes some code restructuring to eliminate unreachable
1138 code, elimination of some gotos, elimination of unused return values, some
1139 additional casting, and removal of redundant declarations.
1141 Example Code and Data Size: These are the sizes for the OS-independent
1142 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1143 debug version of the code includes the debug output trace mechanism and has a
1144 much larger code and data size.
1147 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
1148 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
1150 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
1151 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
1153 2) iASL Compiler/Disassembler and Tools:
1155 No functional changes for this release.
1157 ----------------------------------------
1158 14 December 2009. Summary of changes for version 20091214:
1160 1) ACPI CA Core Subsystem:
1162 Enhanced automatic data type conversions for predefined name repairs. This
1163 change expands the automatic repairs/conversions for predefined name return
1164 values to make Integers, Strings, and Buffers fully interchangeable. Also, a
1165 Buffer can be converted to a Package of Integers if necessary. The nsrepair.c
1166 module was completely restructured. Lin Ming, Bob Moore.
1168 Implemented automatic removal of null package elements during predefined name
1169 repairs. This change will automatically remove embedded and trailing NULL
1170 package elements from returned package objects that are defined to contain a
1171 variable number of sub-packages. The driver is then presented with a package
1172 with no null elements to deal with. ACPICA BZ 819.
1174 Implemented a repair for the predefined _FDE and _GTM names. The expected
1175 return value for both names is a Buffer of 5 DWORDs. This repair fixes two
1176 possible problems (both seen in the field), where a package of integers is
1177 returned, or a buffer of BYTEs is returned. With assistance from Jung-uk Kim.
1179 Implemented additional module-level code support. This change will properly
1180 execute module-level code that is not at the root of the namespace (under a
1181 Device object, etc.). Now executes the code within the current scope instead
1182 of the root. ACPICA BZ 762. Lin Ming.
1184 Fixed possible mutex acquisition errors when running _REG methods. Fixes a
1185 problem where mutex errors can occur when running a _REG method that is in
1186 the same scope as a method-defined operation region or an operation region
1187 under a module-level IF block. This type of code is rare, so the problem has
1188 not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore.
1190 Fixed a possible memory leak during module-level code execution. An object
1191 could be leaked for each block of executed module-level code if the
1192 interpreter slack mode is enabled This change deletes any implicitly returned
1193 object from the module-level code block. Lin Ming.
1195 Removed messages for successful predefined repair(s). The repair mechanism
1196 was considered too wordy. Now, messages are only unconditionally emitted if
1197 the return object cannot be repaired. Existing messages for successful
1198 repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ 827.
1200 Example Code and Data Size: These are the sizes for the OS-independent
1201 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1202 debug version of the code includes the debug output trace mechanism and has a
1203 much larger code and data size.
1206 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
1207 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
1209 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
1210 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
1212 2) iASL Compiler/Disassembler and Tools:
1214 iASL: Fixed a regression introduced in 20091112 where intermediate .SRC files
1215 were no longer automatically removed at the termination of the compile.
1217 acpiexec: Implemented the -f option to specify default region fill value.
1218 This option specifies the value used to initialize buffers that simulate
1219 operation regions. Default value is zero. Useful for debugging problems that
1220 depend on a specific initial value for a region or field.
1222 ----------------------------------------
1223 12 November 2009. Summary of changes for version 20091112:
1225 1) ACPI CA Core Subsystem:
1227 Implemented a post-order callback to AcpiWalkNamespace. The existing
1228 interface only has a pre-order callback. This change adds an additional
1229 parameter for a post-order callback which will be more useful for bus scans.
1230 ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference.
1232 Modified the behavior of the operation region memory mapping cache for
1233 SystemMemory. Ensure that the memory mappings created for operation regions
1234 do not cross 4K page boundaries. Crossing a page boundary while mapping
1235 regions can cause kernel warnings on some hosts if the pages have different
1236 attributes. Such regions are probably BIOS bugs, and this is the workaround.
1237 Linux BZ 14445. Lin Ming.
1239 Implemented an automatic repair for predefined methods that must return
1240 sorted lists. This change will repair (by sorting) packages returned by _ALR,
1241 _PSS, and _TSS. Drivers can now assume that the packages are correctly sorted
1242 and do not contain NULL package elements. Adds one new file,
1243 namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore.
1245 Fixed a possible fault during predefined name validation if a return Package
1246 object contains NULL elements. Also adds a warning if a NULL element is
1247 followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement may
1248 include repair or removal of all such NULL elements where possible.
1250 Implemented additional module-level executable AML code support. This change
1251 will execute module-level code that is not at the root of the namespace
1252 (under a Device object, etc.) at table load time. Module-level executable AML
1253 code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming.
1255 Implemented a new internal function to create Integer objects. This function
1256 simplifies miscellaneous object creation code. ACPICA BZ 823.
1258 Reduced the severity of predefined repair messages, Warning to Info. Since
1259 the object was successfully repaired, a warning is too severe. Reduced to an
1260 info message for now. These messages may eventually be changed to debug-only.
1263 Example Code and Data Size: These are the sizes for the OS-independent
1264 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1265 debug version of the code includes the debug output trace mechanism and has a
1266 much larger code and data size.
1269 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
1270 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
1272 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
1273 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
1275 2) iASL Compiler/Disassembler and Tools:
1277 iASL: Implemented Switch() with While(1) so that Break works correctly. This
1278 change correctly implements the Switch operator with a surrounding While(1)
1279 so that the Break operator works as expected. ACPICA BZ 461. Lin Ming.
1281 iASL: Added a message if a package initializer list is shorter than package
1282 length. Adds a new remark for a Package() declaration if an initializer list
1283 exists, but is shorter than the declared length of the package. Although
1284 technically legal, this is probably a coding error and it is seen in the
1285 field. ACPICA BZ 815. Lin Ming, Bob Moore.
1287 iASL: Fixed a problem where the compiler could fault after the maximum number
1288 of errors was reached (200).
1290 acpixtract: Fixed a possible warning for pointer cast if the compiler warning
1291 level set very high.
1293 ----------------------------------------
1294 13 October 2009. Summary of changes for version 20091013:
1296 1) ACPI CA Core Subsystem:
1298 Fixed a problem where an Operation Region _REG method could be executed more
1299 than once. If a custom address space handler is installed by the host before
1300 the "initialize operation regions" phase of the ACPICA initialization, any
1301 _REG methods for that address space could be executed twice. This change
1302 fixes the problem. ACPICA BZ 427. Lin Ming.
1304 Fixed a possible memory leak for the Scope() ASL operator. When the exact
1305 invocation of "Scope(\)" is executed (change scope to root), one internal
1306 operand object was leaked. Lin Ming.
1308 Implemented a run-time repair for the _MAT predefined method. If the _MAT
1309 return value is defined as a Field object in the AML, and the field
1310 size is less than or equal to the default width of an integer (32 or 64),_MAT
1311 can incorrectly return an Integer instead of a Buffer. ACPICA now
1312 automatically repairs this problem. ACPICA BZ 810.
1314 Implemented a run-time repair for the _BIF and _BIX predefined methods. The
1315 "OEM Information" field is often incorrectly returned as an Integer with
1316 value zero if the field is not supported by the platform. This is due to an
1317 ambiguity in the ACPI specification. The field should always be a string.
1318 ACPICA now automatically repairs this problem by returning a NULL string
1319 within the returned Package. ACPICA BZ 807.
1321 Example Code and Data Size: These are the sizes for the OS-independent
1322 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1323 debug version of the code includes the debug output trace mechanism and has a
1324 much larger code and data size.
1327 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
1328 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
1330 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
1331 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
1333 2) iASL Compiler/Disassembler and Tools:
1335 Disassembler: Fixed a problem where references to external symbols that
1336 contained one or more parent-prefixes (carats) were not handled correctly,
1337 possibly causing a fault. ACPICA BZ 806. Lin Ming.
1339 Disassembler: Restructured the code so that all functions that handle
1340 external symbols are in a single module. One new file is added,
1343 AML Debugger: Added a max count argument for the Batch command (which
1344 executes multiple predefined methods within the namespace.)
1346 iASL: Updated the compiler documentation (User Reference.) Available at
1347 http://www.acpica.org/documentation/. ACPICA BZ 750.
1349 AcpiXtract: Updated for Lint and other formatting changes. Close all open
1352 ----------------------------------------
1353 03 September 2009. Summary of changes for version 20090903:
1355 1) ACPI CA Core Subsystem:
1357 For Windows Vista compatibility, added the automatic execution of an _INI
1358 method located at the namespace root (\_INI). This method is executed at
1359 table load time. This support is in addition to the automatic execution of
1360 \_SB._INI. Lin Ming.
1362 Fixed a possible memory leak in the interpreter for AML package objects if
1363 the package initializer list is longer than the defined size of the package.
1364 This apparently can only happen if the BIOS changes the package size on the
1365 fly (seen in a _PSS object), as ASL compilers do not allow this. The
1366 interpreter will truncate the package to the defined size (and issue an error
1367 message), but previously could leave the extra objects undeleted if they were
1368 pre-created during the argument processing (such is the case if the package
1369 consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805.
1371 Fixed a problem seen when a Buffer or String is stored to itself via ASL.
1372 This has been reported in the field. Previously, ACPICA would zero out the
1373 buffer/string. Now, the operation is treated as a noop. Provides Windows
1374 compatibility. ACPICA BZ 803. Lin Ming.
1376 Removed an extraneous error message for ASL constructs of the form
1377 Store(LocalX,LocalX) when LocalX is uninitialized. These curious statements
1378 are seen in many BIOSs and are once again treated as NOOPs and no error is
1379 emitted when they are encountered. ACPICA BZ 785.
1381 Fixed an extraneous warning message if a _DSM reserved method returns a
1382 Package object. _DSM can return any type of object, so validation on the
1383 return type cannot be performed. ACPICA BZ 802.
1385 Example Code and Data Size: These are the sizes for the OS-independent
1386 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1387 debug version of the code includes the debug output trace mechanism and has a
1388 much larger code and data size.
1391 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
1392 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
1394 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
1395 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
1397 2) iASL Compiler/Disassembler and Tools:
1399 iASL: Fixed a problem with the use of the Alias operator and Resource
1400 Templates. The correct alias is now constructed and no error is emitted.
1403 iASL: Implemented the -I option to specify additional search directories for
1404 include files. Allows multiple additional search paths for include files.
1405 Directories are searched in the order specified on the command line (after
1406 the local directory is searched.) ACPICA BZ 800.
1408 iASL: Fixed a problem where the full pathname for include files was not
1409 emitted for warnings/errors. This caused the IDE support to not work
1410 properly. ACPICA BZ 765.
1412 iASL: Implemented the -@ option to specify a Windows-style response file
1413 containing additional command line options. ACPICA BZ 801.
1415 AcpiExec: Added support to load multiple AML files simultaneously (such as a
1416 DSDT and multiple SSDTs). Also added support for wildcards within the AML
1417 pathname. These features allow all machine tables to be easily loaded and
1418 debugged together. ACPICA BZ 804.
1420 Disassembler: Added missing support for disassembly of HEST table Error Bank
1423 ----------------------------------------
1424 30 July 2009. Summary of changes for version 20090730:
1426 The ACPI 4.0 implementation for ACPICA is complete with this release.
1428 1) ACPI CA Core Subsystem:
1430 ACPI 4.0: Added header file support for all new and changed ACPI tables.
1431 Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are new
1432 for ACPI 4.0, but have previously been supported in ACPICA are: CPEP, BERT,
1433 EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT. There
1434 have been some ACPI 4.0 changes to other existing tables. Split the large
1435 actbl1.h header into the existing actbl2.h header. ACPICA BZ 774.
1437 ACPI 4.0: Implemented predefined name validation for all new names. There are
1438 31 new names in ACPI 4.0. The predefined validation module was split into two
1439 files. The new file is namespace/nsrepair.c. ACPICA BZ 770.
1441 Implemented support for so-called "module-level executable code". This is
1442 executable AML code that exists outside of any control method and is intended
1443 to be executed at table load time. Although illegal since ACPI 2.0, this type
1444 of code still exists and is apparently still being created. Blocks of this
1445 code are now detected and executed as intended. Currently, the code blocks
1446 must exist under either an If, Else, or While construct; these are the
1447 typical cases seen in the field. ACPICA BZ 762. Lin Ming.
1449 Implemented an automatic dynamic repair for predefined names that return
1450 nested Package objects. This applies to predefined names that are defined to
1451 return a variable-length Package of sub-packages. If the number of sub-
1452 packages is one, BIOS code is occasionally seen that creates a simple single
1453 package with no sub-packages. This code attempts to fix the problem by
1454 wrapping a new package object around the existing package. These methods can
1455 be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA BZ
1458 Fixed a regression introduced in 20090625 for the AcpiGetDevices interface.
1459 The _HID/_CID matching was broken and no longer matched IDs correctly. ACPICA
1462 Fixed a problem with AcpiReset where the reset would silently fail if the
1463 register was one of the protected I/O ports. AcpiReset now bypasses the port
1464 validation mechanism. This may eventually be driven into the AcpiRead/Write
1467 Fixed a regression related to the recent update of the AcpiRead/Write
1468 interfaces. A sleep/suspend could fail if the optional PM2 Control register
1469 does not exist during an attempt to write the Bus Master Arbitration bit.
1470 (However, some hosts already delete the code that writes this bit, and the
1471 code may in fact be obsolete at this date.) ACPICA BZ 799.
1473 Fixed a problem where AcpiTerminate could fault if inadvertently called twice
1474 in succession. ACPICA BZ 795.
1476 Example Code and Data Size: These are the sizes for the OS-independent
1477 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1478 debug version of the code includes the debug output trace mechanism and has a
1479 much larger code and data size.
1482 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
1483 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
1485 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
1486 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
1488 2) iASL Compiler/Disassembler and Tools:
1490 ACPI 4.0: Implemented disassembler support for all new ACPI tables and
1491 changes to existing tables. ACPICA BZ 775.
1493 ----------------------------------------
1494 25 June 2009. Summary of changes for version 20090625:
1496 The ACPI 4.0 Specification was released on June 16 and is available at
1497 www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will
1498 continue for the next few releases.
1500 1) ACPI CA Core Subsystem:
1502 ACPI 4.0: Implemented interpreter support for the IPMI operation region
1503 address space. Includes support for bi-directional data buffers and an IPMI
1504 address space handler (to be installed by an IPMI device driver.) ACPICA BZ
1507 ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. Includes
1508 support in both the header files and the disassembler.
1510 Completed a major update for the AcpiGetObjectInfo external interface.
1512 - Support for variable, unlimited length HID, UID, and CID strings.
1513 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, etc.)
1514 - Call the _SxW power methods on behalf of a device object.
1515 - Determine if a device is a PCI root bridge.
1516 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO.
1517 These changes will require an update to all callers of this interface. See
1518 the updated ACPICA Programmer Reference for details. One new source file has
1519 been added - utilities/utids.c. ACPICA BZ 368, 780.
1521 Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit
1522 transfers. The Value parameter has been extended from 32 bits to 64 bits in
1523 order to support new ACPI 4.0 tables. These changes will require an update to
1524 all callers of these interfaces. See the ACPICA Programmer Reference for
1525 details. ACPICA BZ 768.
1527 Fixed several problems with AcpiAttachData. The handler was not invoked when
1528 the host node was deleted. The data sub-object was not automatically deleted
1529 when the host node was deleted. The interface to the handler had an unused
1530 parameter, this was removed. ACPICA BZ 778.
1532 Enhanced the function that dumps ACPI table headers. All non-printable
1533 characters in the string fields are now replaced with '?' (Signature, OemId,
1534 OemTableId, and CompilerId.) ACPI tables with non-printable characters in
1535 these fields are occasionally seen in the field. ACPICA BZ 788.
1537 Fixed a problem with predefined method repair code where the code that
1538 attempts to repair/convert an object of incorrect type is only executed on
1539 the first time the predefined method is called. The mechanism that disables
1540 warnings on subsequent calls was interfering with the repair mechanism.
1543 Fixed a possible memory leak in the predefined validation/repair code when a
1544 buffer is automatically converted to an expected string object.
1546 Removed obsolete 16-bit files from the distribution and from the current git
1547 tree head. ACPICA BZ 776.
1549 Example Code and Data Size: These are the sizes for the OS-independent
1550 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1551 debug version of the code includes the debug output trace mechanism and has a
1552 much larger code and data size.
1555 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
1556 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
1558 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
1559 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
1561 2) iASL Compiler/Disassembler and Tools:
1563 ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI
1564 operation region keyword. ACPICA BZ 771, 772. Lin Ming.
1566 ACPI 4.0: iASL - implemented compile-time validation support for all new
1567 predefined names and control methods (31 total). ACPICA BZ 769.
1569 ----------------------------------------
1570 21 May 2009. Summary of changes for version 20090521:
1572 1) ACPI CA Core Subsystem:
1574 Disabled the preservation of the SCI enable bit in the PM1 control register.
1575 The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification to be
1576 a "preserved" bit - "OSPM always preserves this bit position", section
1577 4.7.3.2.1. However, some machines fail if this bit is in fact preserved
1578 because the bit needs to be explicitly set by the OS as a workaround. No
1579 machines fail if the bit is not preserved. Therefore, ACPICA no longer
1580 attempts to preserve this bit.
1582 Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or
1583 incorrectly formed _PRT package could cause a fault. Added validation to
1584 ensure that each package element is actually a sub-package.
1586 Implemented a new interface to install or override a single control method,
1587 AcpiInstallMethod. This interface is useful when debugging in order to repair
1588 an existing method or to install a missing method without having to override
1589 the entire ACPI table. See the ACPICA Programmer Reference for use and
1590 examples. Lin Ming, Bob Moore.
1592 Fixed several reference count issues with the DdbHandle object that is
1593 created from a Load or LoadTable operator. Prevent premature deletion of the
1594 object. Also, mark the object as invalid once the table has been unloaded.
1595 This is needed because the handle itself may not be deleted after the table
1596 unload, depending on whether it has been stored in a named object by the
1599 Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple
1600 mutexes of the same sync level are acquired but then not released in strict
1601 opposite order, the internally maintained Current Sync Level becomes confused
1602 and can cause subsequent execution errors. ACPICA BZ 471.
1604 Changed the allowable release order for ASL mutex objects. The ACPI 4.0
1605 specification has been changed to make the SyncLevel for mutex objects more
1606 useful. When releasing a mutex, the SyncLevel of the mutex must now be the
1607 same as the current sync level. This makes more sense than the previous rule
1608 (SyncLevel less than or equal). This change updates the code to match the
1611 Fixed a problem with the local version of the AcpiOsPurgeCache function. The
1612 (local) cache must be locked during all cache object deletions. Andrew
1615 Updated the Load operator to use operation region interfaces. This replaces
1616 direct memory mapping with region access calls. Now, all region accesses go
1617 through the installed region handler as they should.
1619 Simplified and optimized the NsGetNextNode function. Reduced parameter count
1620 and reduced code for this frequently used function.
1622 Example Code and Data Size: These are the sizes for the OS-independent
1623 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1624 debug version of the code includes the debug output trace mechanism and has a
1625 much larger code and data size.
1628 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
1629 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
1631 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
1632 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
1634 2) iASL Compiler/Disassembler and Tools:
1636 Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some problems
1637 with sub-table disassembly and handling invalid sub-tables. Attempt recovery
1638 after an invalid sub-table ID.
1640 ----------------------------------------
1641 22 April 2009. Summary of changes for version 20090422:
1643 1) ACPI CA Core Subsystem:
1645 Fixed a compatibility issue with the recently released I/O port protection
1646 mechanism. For windows compatibility, 1) On a port protection violation,
1647 simply ignore the request and do not return an exception (allow the control
1648 method to continue execution.) 2) If only part of the request overlaps a
1649 protected port, read/write the individual ports that are not protected. Linux
1652 Enhanced the execution of the ASL/AML BreakPoint operator so that it actually
1653 breaks into the AML debugger if the debugger is present. This matches the
1654 ACPI-defined behavior.
1656 Fixed several possible warnings related to the use of the configurable
1657 ACPI_THREAD_ID. This type can now be configured as either an integer or a
1658 pointer with no warnings. Also fixes several warnings in printf-like
1659 statements for the 64-bit build when the type is configured as a pointer.
1662 Fixed a number of possible warnings when compiling with gcc 4+ (depending on
1663 warning options.) Examples include printf formats, aliasing, unused globals,
1664 missing prototypes, missing switch default statements, use of non-ANSI
1665 library functions, use of non-ANSI constructs. See generate/unix/Makefile for
1666 a list of warning options used with gcc 3 and 4. ACPICA BZ 735.
1668 Example Code and Data Size: These are the sizes for the OS-independent
1669 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1670 debug version of the code includes the debug output trace mechanism and has a
1671 much larger code and data size.
1674 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
1675 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
1677 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
1678 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
1680 2) iASL Compiler/Disassembler and Tools:
1682 iASL: Fixed a generation warning from Bison 2.3 and fixed several warnings on
1685 iASL: Fixed a problem where the Unix/Linux versions of the compiler could not
1686 correctly digest Windows/DOS formatted files (with CR/LF).
1688 iASL: Added a new option for "quiet mode" (-va) that produces only the
1689 compilation summary, not individual errors and warnings. Useful for large
1692 AcpiExec: Implemented a new option (-z) to enable a forced semaphore/mutex
1693 timeout that can be used to detect hang conditions during execution of AML
1694 code (includes both internal semaphores and AML-defined mutexes and events.)
1696 Added new makefiles for the generation of acpica in a generic unix-like
1697 environment. These makefiles are intended to generate the acpica tools and
1698 utilities from the original acpica git source tree structure.
1700 Test Suites: Updated and cleaned up the documentation files. Updated the
1701 copyrights to 2009, affecting all source files. Use the new version of iASL
1702 with quiet mode. Increased the number of available semaphores in the Windows
1703 OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, added
1704 an alternate implementation of the semaphore timeout to allow aslts to
1705 execute fully on Cygwin.
1707 ----------------------------------------
1708 20 March 2009. Summary of changes for version 20090320:
1710 1) ACPI CA Core Subsystem:
1712 Fixed a possible race condition between AcpiWalkNamespace and dynamic table
1713 unloads. Added a reader/writer locking mechanism to allow multiple concurrent
1714 namespace walks (readers), but block a dynamic table unload until it can gain
1715 exclusive write access to the namespace. This fixes a problem where a table
1716 unload could (possibly catastrophically) delete the portion of the namespace
1717 that is currently being examined by a walk. Adds a new file, utlock.c, that
1718 implements the reader/writer lock mechanism. ACPICA BZ 749.
1720 Fixed a regression introduced in version 20090220 where a change to the FADT
1721 handling could cause the ACPICA subsystem to access non-existent I/O ports.
1723 Modified the handling of FADT register and table (FACS/DSDT) addresses. The
1724 FADT can contain both 32-bit and 64-bit versions of these addresses.
1725 Previously, the 64-bit versions were favored, meaning that if both 32 and 64
1726 versions were valid, but not equal, the 64-bit version was used. This was
1727 found to cause some machines to fail. Now, in this case, the 32-bit version
1728 is used instead. This now matches the Windows behavior.
1730 Implemented a new mechanism to protect certain I/O ports. Provides Microsoft
1731 compatibility and protects the standard PC I/O ports from access via AML
1732 code. Adds a new file, hwvalid.c
1734 Fixed a possible extraneous warning message from the FADT support. The
1735 message warns of a 32/64 length mismatch between the legacy and GAS
1736 definitions for a register.
1738 Removed the obsolete AcpiOsValidateAddress OSL interface. This interface is
1739 made obsolete by the port protection mechanism above. It was previously used
1740 to validate the entire address range of an operation region, which could be
1741 incorrect if the range included illegal ports, but fields within the
1742 operation region did not actually access those ports. Validation is now
1743 performed on a per-field basis instead of the entire region.
1745 Modified the handling of the PM1 Status Register ignored bit (bit 11.)
1746 Ignored bits must be "preserved" according to the ACPI spec. Usually, this
1747 means a read/modify/write when writing to the register. However, for status
1748 registers, writing a one means clear the event. Writing a zero means preserve
1749 the event (do not clear.) This behavior is clarified in the ACPI 4.0 spec,
1750 and the ACPICA code now simply always writes a zero to the ignored bit.
1752 Modified the handling of ignored bits for the PM1 A/B Control Registers. As
1753 per the ACPI specification, for the control registers, preserve
1754 (read/modify/write) all bits that are defined as either reserved or ignored.
1756 Updated the handling of write-only bits in the PM1 A/B Control Registers.
1757 When reading the register, zero the write-only bits as per the ACPI spec.
1758 ACPICA BZ 443. Lin Ming.
1760 Removed "Linux" from the list of supported _OSI strings. Linux no longer
1761 wants to reply true to this request. The Windows strings are the only paths
1762 through the AML that are tested and known to work properly.
1765 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
1766 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
1768 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
1769 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
1771 2) iASL Compiler/Disassembler and Tools:
1773 Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c and
1776 ----------------------------------------
1777 20 February 2009. Summary of changes for version 20090220:
1779 1) ACPI CA Core Subsystem:
1781 Optimized the ACPI register locking. Removed locking for reads from the ACPI
1782 bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock is
1783 not required when reading the single-bit registers. The
1784 AcpiGetRegisterUnlocked function is no longer needed and has been removed.
1785 This will improve performance for reads on these registers. ACPICA BZ 760.
1787 Fixed the parameter validation for AcpiRead/Write. Now return
1788 AE_BAD_PARAMETER if the input register pointer is null, and AE_BAD_ADDRESS if
1789 the register has an address of zero. Previously, these cases simply returned
1790 AE_OK. For optional registers such as PM1B status/enable/control, the caller
1791 should check for a valid register address before calling. ACPICA BZ 748.
1793 Renamed the external ACPI bit register access functions. Renamed
1794 AcpiGetRegister and AcpiSetRegister to clarify the purpose of these
1795 functions. The new names are AcpiReadBitRegister and AcpiWriteBitRegister.
1796 Also, restructured the code for these functions by simplifying the code path
1797 and condensing duplicate code to reduce code size.
1799 Added new functions to transparently handle the possibly split PM1 A/B
1800 registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two functions
1801 now handle the split registers for PM1 Status, Enable, and Control. ACPICA BZ
1804 Added a function to handle the PM1 control registers, AcpiHwWritePm1Control.
1805 This function writes both of the PM1 control registers (A/B). These registers
1806 are different than the PM1 A/B status and enable registers in that different
1807 values can be written to the A/B registers. Most notably, the SLP_TYP bits
1808 can be different, as per the values returned from the _Sx predefined methods.
1810 Removed an extra register write within AcpiHwClearAcpiStatus. This function
1811 was writing an optional PM1B status register twice. The existing call to the
1812 low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 A/B
1813 register. ACPICA BZ 751.
1815 Split out the PM1 Status registers from the FADT. Added new globals for these
1816 registers (A/B), similar to the way the PM1 Enable registers are handled.
1817 Instead of overloading the FADT Event Register blocks. This makes the code
1818 clearer and less prone to error.
1820 Fixed the warning message for when the platform contains too many ACPI tables
1821 for the default size of the global root table data structure. The calculation
1822 for the truncation value was incorrect.
1824 Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this
1825 obsolete macro, since it is now a simple reference to ->common.type. There
1826 were about 150 invocations of the macro across 41 files. ACPICA BZ 755.
1828 Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as
1829 TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to
1830 simply SLEEP_TYPE. ACPICA BZ 754.
1832 Conditionally compile the AcpiSetFirmwareWakingVector64 function. This
1833 function is only needed on 64-bit host operating systems and is thus not
1834 included for 32-bit hosts.
1836 Debug output: print the input and result for invocations of the _OSI reserved
1837 control method via the ACPI_LV_INFO debug level. Also, reduced some of the
1838 verbosity of this debug level. Len Brown.
1840 Example Code and Data Size: These are the sizes for the OS-independent
1841 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1842 debug version of the code includes the debug output trace mechanism and has a
1843 much larger code and data size.
1846 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
1847 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
1849 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
1850 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
1852 2) iASL Compiler/Disassembler and Tools:
1854 Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the
1855 various legal performance profiles.
1857 ----------------------------------------
1858 23 January 2009. Summary of changes for version 20090123:
1860 1) ACPI CA Core Subsystem:
1862 Added the 2009 copyright to all module headers and signons. This affects
1863 virtually every file in the ACPICA core subsystem, the iASL compiler, and
1864 the tools/utilities.
1866 Implemented a change to allow the host to override any ACPI table, including
1867 dynamically loaded tables. Previously, only the DSDT could be replaced by the
1868 host. With this change, the AcpiOsTableOverride interface is called for each
1869 table found in the RSDT/XSDT during ACPICA initialization, and also whenever
1870 a table is dynamically loaded via the AML Load operator.
1872 Updated FADT flag definitions, especially the Boot Architecture flags.
1874 Debugger: For the Find command, automatically pad the input ACPI name with
1875 underscores if the name is shorter than 4 characters. This enables a match
1876 with the actual namespace entry which is itself padded with underscores.
1878 Example Code and Data Size: These are the sizes for the OS-independent
1879 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1880 debug version of the code includes the debug output trace mechanism and has a
1881 much larger code and data size.
1884 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
1885 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
1887 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
1888 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
1890 2) iASL Compiler/Disassembler and Tools:
1892 Fix build error under Bison-2.4.
1894 Dissasembler: Enhanced FADT support. Added decoding of the Boot Architecture
1895 flags. Now decode all flags, regardless of the FADT version. Flag output
1896 includes the FADT version which first defined each flag.
1898 The iASL -g option now dumps the RSDT to a file (in addition to the FADT and
1899 DSDT). Windows only.
1901 ----------------------------------------
1902 04 December 2008. Summary of changes for version 20081204:
1904 1) ACPI CA Core Subsystem:
1906 The ACPICA Programmer Reference has been completely updated and revamped for
1907 this release. This includes updates to the external interfaces, OSL
1908 interfaces, the overview sections, and the debugger reference.
1910 Several new ACPICA interfaces have been implemented and documented in the
1911 programmer reference:
1912 AcpiReset - Writes the reset value to the FADT-defined reset register.
1913 AcpiDisableAllGpes - Disable all available GPEs.
1914 AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs.
1915 AcpiGetGpeDevice - Get the GPE block device associated with a GPE.
1916 AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs.
1917 AcpiRead - Low-level read ACPI register (was HwLowLevelRead.)
1918 AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.)
1920 Most of the public ACPI hardware-related interfaces have been moved to a new
1921 file, components/hardware/hwxface.c
1923 Enhanced the FADT parsing and low-level ACPI register access: The ACPI
1924 register lengths within the FADT are now used, and the low level ACPI
1925 register access no longer hardcodes the ACPI register lengths. Given that
1926 there may be some risk in actually trusting the FADT register lengths, a run-
1927 time option was added to fall back to the default hardcoded lengths if the
1928 FADT proves to contain incorrect values - UseDefaultRegisterWidths. This
1929 option is set to true for now, and a warning is issued if a suspicious FADT
1930 register length is overridden with the default value.
1932 Fixed a reference count issue in NsRepairObject. This problem was introduced
1933 in version 20081031 as part of a fix to repair Buffer objects within
1936 Added semaphore support to the Linux/Unix application OS-services layer
1937 (OSL). ACPICA BZ 448. Lin Ming.
1939 Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes will
1940 be implemented in the OSL, or will binary semaphores be used instead.
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 has a
1945 much larger code and data size.
1948 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
1949 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
1951 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
1952 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
1954 2) iASL Compiler/Disassembler and Tools:
1956 iASL: Completed the '-e' option to include additional ACPI tables in order to
1957 aid with disassembly and External statement generation. ACPICA BZ 742. Lin
1960 iASL: Removed the "named object in while loop" error. The compiler cannot
1961 determine how many times a loop will execute. ACPICA BZ 730.
1963 Disassembler: Implemented support for FADT revision 2 (MS extension). ACPICA
1966 Disassembler: Updates for several ACPI data tables (HEST, EINJ, and MCFG).
1968 ----------------------------------------
1969 31 October 2008. Summary of changes for version 20081031:
1971 1) ACPI CA Core Subsystem:
1973 Restructured the ACPICA header files into public/private. acpi.h now includes
1974 only the "public" acpica headers. All other acpica headers are "private" and
1975 should not be included by acpica users. One new file, accommon.h is used to
1976 include the commonly used private headers for acpica code generation. Future
1977 plans include moving all private headers to a new subdirectory.
1979 Implemented an automatic Buffer->String return value conversion for
1980 predefined ACPI methods. For these methods (such as _BIF), added automatic
1981 conversion for return objects that are required to be a String, but a Buffer
1982 was found instead. This can happen when reading string battery data from an
1983 operation region, because it used to be difficult to convert the data from
1984 buffer to string from within the ASL. Ensures that the host OS is provided
1985 with a valid null-terminated string. Linux BZ 11822.
1987 Updated the FACS waking vector interfaces. Split AcpiSetFirmwareWakingVector
1988 into two: one for the 32-bit vector, another for the 64-bit vector. This is
1989 required because the host OS must setup the wake much differently for each
1990 vector (real vs. protected mode, etc.) and the interface itself should not be
1991 deciding which vector to use. Also, eliminated the GetFirmwareWakingVector
1992 interface, as it served no purpose (only the firmware reads the vector, OS
1993 only writes the vector.) ACPICA BZ 731.
1995 Implemented a mechanism to escape infinite AML While() loops. Added a loop
1996 counter to force exit from AML While loops if the count becomes too large.
1997 This can occur in poorly written AML when the hardware does not respond
1998 within a while loop and the loop does not implement a timeout. The maximum
1999 loop count is configurable. A new exception code is returned when a loop is
2000 broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore.
2002 Optimized the execution of AML While loops. Previously, a control state
2003 object was allocated and freed for each execution of the loop. The
2004 optimization is to simply reuse the control state for each iteration. This
2005 speeds up the raw loop execution time by about 5%.
2007 Enhanced the implicit return mechanism. For Windows compatibility, return an
2008 implicit integer of value zero for methods that contain no executable code.
2009 Such methods are seen in the field as stubs (presumably), and can cause
2010 drivers to fail if they expect a return value. Lin Ming.
2012 Allow multiple backslashes as root prefixes in namepaths. In a fully
2013 qualified namepath, allow multiple backslash prefixes. This can happen (and
2014 is seen in the field) because of the use of a double-backslash in strings
2015 (since backslash is the escape character) causing confusion. ACPICA BZ 739
2018 Emit a warning if two different FACS or DSDT tables are discovered in the
2019 FADT. Checks if there are two valid but different addresses for the FACS and
2020 DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.)
2022 Consolidated the method argument count validation code. Merged the code that
2023 validates control method argument counts into the predefined validation
2024 module. Eliminates possible multiple warnings for incorrect argument counts.
2026 Implemented ACPICA example code. Includes code for ACPICA initialization,
2027 handler installation, and calling a control method. Available at
2028 source/tools/examples.
2030 Added a global pointer for FACS table to simplify internal FACS access. Use
2031 the global pointer instead of using AcpiGetTableByIndex for each FACS access.
2032 This simplifies the code for the Global Lock and the Firmware Waking
2035 Example Code and Data Size: These are the sizes for the OS-independent
2036 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2037 debug version of the code includes the debug output trace mechanism and has a
2038 much larger code and data size.
2041 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
2042 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
2044 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
2045 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
2047 2) iASL Compiler/Disassembler and Tools:
2049 iASL: Improved disassembly of external method calls. Added the -e option to
2050 allow the inclusion of additional ACPI tables to help with the disassembly of
2051 method invocations and the generation of external declarations during the
2052 disassembly. Certain external method invocations cannot be disassembled
2053 properly without the actual declaration of the method. Use the -e option to
2054 include the table where the external method(s) are actually declared. Most
2055 useful for disassembling SSDTs that make method calls back to the master
2056 DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl -d
2057 -e dsdt.aml ssdt1.aml
2059 iASL: Fix to allow references to aliases within ASL namepaths. Fixes a
2060 problem where the use of an alias within a namepath would result in a not
2061 found error or cause the compiler to fault. Also now allows forward
2062 references from the Alias operator itself. ACPICA BZ 738.
2064 ----------------------------------------
2065 26 September 2008. Summary of changes for version 20080926:
2067 1) ACPI CA Core Subsystem:
2069 Designed and implemented a mechanism to validate predefined ACPI methods and
2070 objects. This code validates the predefined ACPI objects (objects whose names
2071 start with underscore) that appear in the namespace, at the time they are
2072 evaluated. The argument count and the type of the returned object are
2073 validated against the ACPI specification. The purpose of this validation is
2074 to detect problems with the BIOS-implemented predefined ACPI objects before
2075 the results are returned to the ACPI-related drivers. Future enhancements may
2076 include actual repair of incorrect return objects where possible. Two new
2077 files are nspredef.c and acpredef.h.
2079 Fixed a fault in the AML parser if a memory allocation fails during the Op
2080 completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492.
2082 Fixed an issue with implicit return compatibility. This change improves the
2083 implicit return mechanism to be more compatible with the MS interpreter. Lin
2084 Ming, ACPICA BZ 349.
2086 Implemented support for zero-length buffer-to-string conversions. Allow zero
2087 length strings during interpreter buffer-to-string conversions. For example,
2088 during the ToDecimalString and ToHexString operators, as well as implicit
2089 conversions. Fiodor Suietov, ACPICA BZ 585.
2091 Fixed two possible memory leaks in the error exit paths of
2092 AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions are
2093 similar in that they use a stack of state objects in order to eliminate
2094 recursion. The stack must be fully unwound and deallocated if an error
2095 occurs. Lin Ming. ACPICA BZ 383.
2097 Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the global
2098 ACPI register table. This bit does not exist and is unused. Lin Ming, Bob
2099 Moore ACPICA BZ 442.
2101 Removed the obsolete version number in module headers. Removed the
2102 "$Revision" number that appeared in each module header. This version number
2103 was useful under SourceSafe and CVS, but has no meaning under git. It is not
2104 only incorrect, it could also be misleading.
2106 Example Code and Data Size: These are the sizes for the OS-independent
2107 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2108 debug version of the code includes the debug output trace mechanism and has a
2109 much larger code and data size.
2112 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
2113 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
2115 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
2116 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
2118 ----------------------------------------
2119 29 August 2008. Summary of changes for version 20080829:
2121 1) ACPI CA Core Subsystem:
2123 Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type
2124 Reference. Changes include the elimination of cheating on the Object field
2125 for the DdbHandle subtype, addition of a reference class field to
2126 differentiate the various reference types (instead of an AML opcode), and the
2127 cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723
2129 Reduce an error to a warning for an incorrect method argument count.
2130 Previously aborted with an error if too few arguments were passed to a
2131 control method via the external ACPICA interface. Now issue a warning instead
2132 and continue. Handles the case where the method inadvertently declares too
2133 many arguments, but does not actually use the extra ones. Applies mainly to
2134 the predefined methods. Lin Ming. Linux BZ 11032.
2136 Disallow the evaluation of named object types with no intrinsic value. Return
2137 AE_TYPE for objects that have no value and therefore evaluation is undefined:
2138 Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation of
2139 these types were allowed, but an exception would be generated at some point
2140 during the evaluation. Now, the error is generated up front.
2142 Fixed a possible memory leak in the AcpiNsGetExternalPathname function
2143 (nsnames.c). Fixes a leak in the error exit path.
2145 Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These debug
2146 levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and ACPI_EXCEPTION
2147 interfaces. Also added ACPI_DB_EVENTS to correspond with the existing
2150 Removed obsolete and/or unused exception codes from the acexcep.h header.
2151 There is the possibility that certain device drivers may be affected if they
2152 use any of these exceptions.
2154 The ACPICA documentation has been added to the public git source tree, under
2155 acpica/documents. Included are the ACPICA programmer reference, the iASL
2156 compiler reference, and the changes.txt release logfile.
2158 Example Code and Data Size: These are the sizes for the OS-independent
2159 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2160 debug version of the code includes the debug output trace mechanism and has a
2161 much larger code and data size.
2164 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
2165 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
2167 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
2168 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
2170 2) iASL Compiler/Disassembler and Tools:
2172 Allow multiple argument counts for the predefined _SCP method. ACPI 3.0
2173 defines _SCP with 3 arguments. Previous versions defined it with only 1
2174 argument. iASL now allows both definitions.
2176 iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for zero-
2177 length subtables when disassembling ACPI tables. Also fixed a couple of
2178 errors where a full 16-bit table type field was not extracted from the input
2181 acpisrc: Improve comment counting mechanism for generating source code
2182 statistics. Count first and last lines of multi-line comments as whitespace,
2183 not comment lines. Handle Linux legal header in addition to standard acpica
2186 ----------------------------------------
2188 29 July 2008. Summary of changes for version 20080729:
2190 1) ACPI CA Core Subsystem:
2192 Fix a possible deadlock in the GPE dispatch. Remove call to
2193 AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will attempt
2194 to acquire the GPE lock but can deadlock since the GPE lock is already held
2195 at dispatch time. This code was introduced in version 20060831 as a response
2196 to Linux BZ 6881 and has since been removed from Linux.
2198 Add a function to dereference returned reference objects. Examines the return
2199 object from a call to AcpiEvaluateObject. Any Index or RefOf references are
2200 automatically dereferenced in an attempt to return something useful (these
2201 reference types cannot be converted into an external ACPI_OBJECT.) Provides
2202 MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105
2204 x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new
2205 subtables for the MADT and one new subtable for the SRAT. Includes
2206 disassembler and AcpiSrc support. Data from the Intel 64 Architecture x2APIC
2207 Specification, June 2008.
2209 Additional error checking for pathname utilities. Add error check after all
2210 calls to AcpiNsGetPathnameLength. Add status return from
2211 AcpiNsBuildExternalPath and check after all calls. Add parameter validation
2212 to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar.
2214 Return status from the global init function AcpiUtGlobalInitialize. This is
2215 used by both the kernel subsystem and the utilities such as iASL compiler.
2216 The function could possibly fail when the caches are initialized. Yang Yi.
2218 Add a function to decode reference object types to strings. Created for
2219 improved error messages.
2221 Improve object conversion error messages. Better error messages during object
2222 conversion from internal to the external ACPI_OBJECT. Used for external calls
2223 to AcpiEvaluateObject.
2225 Example Code and Data Size: These are the sizes for the OS-independent
2226 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2227 debug version of the code includes the debug output trace mechanism and has a
2228 much larger code and data size.
2231 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
2232 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
2234 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
2235 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
2237 2) iASL Compiler/Disassembler and Tools:
2239 Debugger: fix a possible hang when evaluating non-methods. Fixes a problem
2240 introduced in version 20080701. If the object being evaluated (via execute
2241 command) is not a method, the debugger can hang while trying to obtain non-
2242 existent parameters.
2244 iASL: relax error for using reserved "_T_x" identifiers. These names can
2245 appear in a disassembled ASL file if they were emitted by the original
2246 compiler. Instead of issuing an error or warning and forcing the user to
2247 manually change these names, issue a remark instead.
2249 iASL: error if named object created in while loop. Emit an error if any named
2250 object is created within a While loop. If allowed, this code will generate a
2251 run-time error on the second iteration of the loop when an attempt is made to
2252 create the same named object twice. ACPICA bugzilla 730.
2254 iASL: Support absolute pathnames for include files. Add support for absolute
2255 pathnames within the Include operator. previously, only relative pathnames
2258 iASL: Enforce minimum 1 interrupt in interrupt macro and Resource Descriptor.
2259 The ACPI spec requires one interrupt minimum. BZ 423
2261 iASL: Handle a missing ResourceSource arg, with a present SourceIndex.
2262 Handles the case for the Interrupt Resource Descriptor where
2263 the ResourceSource argument is omitted but ResourceSourceIndex
2264 is present. Now leave room for the Index. BZ 426
2266 iASL: Prevent error message if CondRefOf target does not exist. Fixes cases
2267 where an error message is emitted if the target does not exist. BZ 516
2269 iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option
2270 (get ACPI tables on Windows). This was apparently broken in version 20070919.
2272 AcpiXtract: Handle EOF while extracting data. Correctly handle the case where
2273 the EOF happens immediately after the last table in the input file. Print
2274 completion message. Previously, no message was displayed in this case.
2276 ----------------------------------------
2277 01 July 2008. Summary of changes for version 20080701:
2279 0) Git source tree / acpica.org
2281 Fixed a problem where a git-clone from http would not transfer the entire
2284 1) ACPI CA Core Subsystem:
2286 Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one
2287 enable bit. Now performs a read-change-write of the enable register instead
2288 of simply writing out the cached enable mask. This will prevent inadvertent
2289 enabling of GPEs if a rogue GPE is received during initialization (before GPE
2290 handlers are installed.)
2292 Implemented a copy for dynamically loaded tables. Previously, dynamically
2293 loaded tables were simply mapped - but on some machines this memory is
2294 corrupted after suspend. Now copy the table to a local buffer. For the
2295 OpRegion case, added checksum verify. Use the table length from the table
2296 header, not the region length. For the Buffer case, use the table length
2297 also. Dennis Noordsij, Bob Moore. BZ 10734
2299 Fixed a problem where the same ACPI table could not be dynamically loaded and
2300 unloaded more than once. Without this change, a table cannot be loaded again
2301 once it has been loaded/unloaded one time. The current mechanism does not
2302 unregister a table upon an unload. During a load, if the same table is found,
2303 this no longer returns an exception. BZ 722
2305 Fixed a problem where the wrong descriptor length was calculated for the
2306 EndTag descriptor in 64-bit mode. The "minimal" descriptors such as EndTag
2307 are calculated as 12 bytes long, but the actual length in the internal
2308 descriptor is 16 because of the round-up to 8 on the 64-bit build. Reported
2309 by Linn Crosetto. BZ 728
2311 Fixed a possible memory leak in the Unload operator. The DdbHandle returned
2312 by Load() did not have its reference count decremented during unload, leading
2313 to a memory leak. Lin Ming. BZ 727
2315 Fixed a possible memory leak when deleting thermal/processor objects. Any
2316 associated notify handlers (and objects) were not being deleted. Fiodor
2319 Fixed the ordering of the ASCII names in the global mutex table to match the
2320 actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug only.
2321 Vegard Nossum. BZ 726
2323 Enhanced the AcpiGetObjectInfo interface to return the number of required
2324 arguments if the object is a control method. Added this call to the debugger
2325 so the proper number of default arguments are passed to a method. This
2326 prevents a warning when executing methods from AcpiExec.
2328 Added a check for an invalid handle in AcpiGetObjectInfo. Return
2329 AE_BAD_PARAMETER if input handle is invalid. BZ 474
2331 Fixed an extraneous warning from exconfig.c on the 64-bit build.
2333 Example Code and Data Size: These are the sizes for the OS-independent
2334 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2335 debug version of the code includes the debug output trace mechanism and has a
2336 much larger code and data size.
2339 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
2340 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
2342 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
2343 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
2345 2) iASL Compiler/Disassembler and Tools:
2347 iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both
2348 resource descriptor names.
2350 iASL: Detect invalid ASCII characters in input (windows version). Removed the
2351 "-CF" flag from the flex compile, enables correct detection of non-ASCII
2352 characters in the input. BZ 441
2354 iASL: Eliminate warning when result of LoadTable is not used. Eliminate the
2355 "result of operation not used" warning when the DDB handle returned from
2356 LoadTable is not used. The warning is not needed. BZ 590
2358 AcpiExec: Add support for dynamic table load/unload. Now calls _CFG method to
2359 pass address of table to the AML. Added option to disable OpRegion simulation
2360 to allow creation of an OpRegion with a real address that was passed to _CFG.
2361 All of this allows testing of the Load and Unload operators from AcpiExec.
2363 Debugger: update tables command for unloaded tables. Handle unloaded tables
2364 and use the standard table header output routine.
2366 ----------------------------------------
2367 09 June 2008. Summary of changes for version 20080609:
2369 1) ACPI CA Core Subsystem:
2371 Implemented a workaround for reversed _PRT entries. A significant number of
2372 BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This
2373 change dynamically detects and repairs this problem. Provides compatibility
2374 with MS ACPI. BZ 6859
2376 Simplified the internal ACPI hardware interfaces to eliminate the locking
2377 flag parameter from Register Read/Write. Added a new external interface,
2378 AcpiGetRegisterUnlocked.
2380 Fixed a problem where the invocation of a GPE control method could hang. This
2381 was a regression introduced in 20080514. The new method argument count
2382 validation mechanism can enter an infinite loop when a GPE method is
2383 dispatched. Problem fixed by removing the obsolete code that passed GPE block
2384 information to the notify handler via the control method parameter pointer.
2386 Fixed a problem where the _SST execution status was incorrectly returned to
2387 the caller of AcpiEnterSleepStatePrep. This was a regression introduced in
2388 20080514. _SST is optional and a NOT_FOUND exception should never be
2391 Fixed a problem where a deleted object could be accessed from within the AML
2392 parser. This was a regression introduced in version 20080123 as a fix for the
2393 Unload operator. Lin Ming. BZ 10669
2395 Cleaned up the debug operand dump mechanism. Eliminated unnecessary operands
2396 and eliminated the use of a negative index in a loop. Operands are now
2397 displayed in the correct order, not backwards. This also fixes a regression
2398 introduced in 20080514 on 64-bit systems where the elimination of
2399 ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 715
2401 Fixed a possible memory leak in EvPciConfigRegionSetup where the error exit
2402 path did not delete a locally allocated structure.
2404 Updated definitions for the DMAR and SRAT tables to synchronize with the
2405 current specifications. Includes disassembler support.
2407 Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect
2408 loop termination value was used. Loop terminated on iteration early, missing
2409 one mutex. Linn Crosetto
2411 Example Code and Data Size: These are the sizes for the OS-independent
2412 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2413 debug version of the code includes the debug output trace mechanism and has a
2414 much larger code and data size.
2417 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
2418 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
2420 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
2421 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
2423 2) iASL Compiler/Disassembler and Tools:
2425 Disassembler: Implemented support for EisaId() within _CID objects. Now
2426 disassemble integer _CID objects back to EisaId invocations, including
2427 multiple integers within _CID packages. Includes single-step support for
2430 Disassembler: Added support for DMAR and SRAT table definition changes.
2432 ----------------------------------------
2433 14 May 2008. Summary of changes for version 20080514:
2435 1) ACPI CA Core Subsystem:
2437 Fixed a problem where GPEs were enabled too early during the ACPICA
2438 initialization. This could lead to "handler not installed" errors on some
2439 machines. Moved GPE enable until after _REG/_STA/_INI methods are run. This
2440 ensures that all operation regions and devices throughout the namespace have
2441 been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916.
2443 Implemented a change to the enter sleep code. Moved execution of the _GTS
2444 method to just before setting sleep enable bit. The execution was moved from
2445 AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed
2446 immediately before the SLP_EN bit is set, as per the ACPI specification.
2449 Implemented a fix to disable unknown GPEs (2nd version). Now always disable
2450 the GPE, even if ACPICA thinks that that it is already disabled. It is
2451 possible that the AML or some other code has enabled the GPE unbeknownst to
2454 Fixed a problem with the Field operator where zero-length fields would return
2455 an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length ASL
2456 field declarations in Field(), BankField(), and IndexField(). BZ 10606.
2458 Implemented a fix for the Load operator, now load the table at the namespace
2459 root. This reverts a change introduced in version 20071019. The table is now
2460 loaded at the namespace root even though this goes against the ACPI
2461 specification. This provides compatibility with other ACPI implementations.
2462 The ACPI specification will be updated to reflect this in ACPI 4.0. Lin Ming.
2464 Fixed a problem where ACPICA would not Load() tables with unusual signatures.
2465 Now ignore ACPI table signature for Load() operator. Only "SSDT" is
2466 acceptable to the ACPI spec, but tables are seen with OEMx and null sigs.
2467 Therefore, signature validation is worthless. Apparently MS ACPI accepts such
2468 signatures, ACPICA must be compatible. BZ 10454.
2470 Fixed a possible negative array index in AcpiUtValidateException. Added NULL
2471 fields to the exception string arrays to eliminate a -1 subtraction on the
2474 Updated the debug tracking macros to reduce overall code and data size.
2475 Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings
2476 instead of pointers to static strings. Jan Beulich and Bob Moore.
2478 Implemented argument count checking in control method invocation via
2479 AcpiEvaluateObject. Now emit an error if too few arguments, warning if too
2480 many. This applies only to extern programmatic control method execution, not
2481 method-to-method calls within the AML. Lin Ming.
2483 Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is no
2484 longer needed, especially with the removal of 16-bit support. It was replaced
2485 mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 bit on
2486 32/64-bit platforms is required.
2488 Added the C const qualifier for appropriate string constants -- mostly
2489 MODULE_NAME and printf format strings. Jan Beulich.
2491 Example Code and Data Size: These are the sizes for the OS-independent
2492 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2493 debug version of the code includes the debug output trace mechanism and has a
2494 much larger code and data size.
2497 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
2498 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
2500 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
2501 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
2503 2) iASL Compiler/Disassembler and Tools:
2505 Implemented ACPI table revision ID validation in the disassembler. Zero is
2506 always invalid. For DSDTs, the ID controls the interpreter integer width. 1
2507 means 32-bit and this is unusual. 2 or greater is 64-bit.
2509 ----------------------------------------
2510 21 March 2008. Summary of changes for version 20080321:
2512 1) ACPI CA Core Subsystem:
2514 Implemented an additional change to the GPE support in order to suppress
2515 spurious or stray GPEs. The AcpiEvDisableGpe function will now permanently
2516 disable incoming GPEs that are neither enabled nor disabled -- meaning that
2517 the GPE is unknown to the system. This should prevent future interrupt floods
2518 from that GPE. BZ 6217 (Zhang Rui)
2520 Fixed a problem where NULL package elements were not returned to the
2521 AcpiEvaluateObject interface correctly. The element was simply ignored
2522 instead of returning a NULL ACPI_OBJECT package element, potentially causing
2523 a buffer overflow and/or confusing the caller who expected a fixed number of
2524 elements. BZ 10132 (Lin Ming, Bob Moore)
2526 Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word, Dword,
2527 Qword), Field, BankField, and IndexField operators when invoked from inside
2528 an executing control method. In this case, these operators created namespace
2529 nodes that were incorrectly left marked as permanent nodes instead of
2530 temporary nodes. This could cause a problem if there is race condition
2531 between an exiting control method and a running namespace walk. (Reported by
2534 Fixed a problem where the CreateField and CreateXXXField operators would
2535 incorrectly allow duplicate names (the name of the field) with no exception
2538 Implemented several changes for Notify handling. Added support for new Notify
2539 values (ACPI 2.0+) and improved the Notify debug output. Notify on
2540 PowerResource objects is no longer allowed, as per the ACPI specification.
2541 (Bob Moore, Zhang Rui)
2543 All Reference Objects returned via the AcpiEvaluateObject interface are now
2544 marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved for
2545 NULL objects - either NULL package elements or unresolved named references.
2547 Fixed a problem where an extraneous debug message was produced for package
2548 objects (when debugging enabled). The message "Package List length larger
2549 than NumElements count" is now produced in the correct case, and is now an
2550 error message rather than a debug message. Added a debug message for the
2551 opposite case, where NumElements is larger than the Package List (the package
2552 will be padded out with NULL elements as per the ACPI spec.)
2554 Implemented several improvements for the output of the ASL "Debug" object to
2555 clarify and keep all data for a given object on one output line.
2557 Fixed two size calculation issues with the variable-length Start Dependent
2558 resource descriptor.
2560 Example Code and Data Size: These are the sizes for the OS-independent
2561 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2562 debug version of the code includes the debug output trace mechanism and has
2563 a much larger code and data size.
2566 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
2567 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
2569 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
2570 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
2572 2) iASL Compiler/Disassembler and Tools:
2574 Fixed a problem with the use of the Switch operator where execution of the
2575 containing method by multiple concurrent threads could cause an
2576 AE_ALREADY_EXISTS exception. This is caused by the fact that there is no
2577 actual Switch opcode, it must be simulated with local named temporary
2578 variables and if/else pairs. The solution chosen was to mark any method that
2579 uses Switch as Serialized, thus preventing multiple thread entries. BZ 469.
2581 ----------------------------------------
2582 13 February 2008. Summary of changes for version 20080213:
2584 1) ACPI CA Core Subsystem:
2586 Implemented another MS compatibility design change for GPE/Notify handling.
2587 GPEs are now cleared/enabled asynchronously to allow all pending notifies to
2588 complete first. It is expected that the OSL will queue the enable request
2589 behind all pending notify requests (may require changes to the local host OSL
2590 in AcpiOsExecute). Alexey Starikovskiy.
2592 Fixed a problem where buffer and package objects passed as arguments to a
2593 control method via the external AcpiEvaluateObject interface could cause an
2594 AE_AML_INTERNAL exception depending on the order and type of operators
2595 executed by the target control method.
2597 Fixed a problem where resource descriptor size optimization could cause a
2598 problem when a _CRS resource template is passed to a _SRS method. The _SRS
2599 resource template must use the same descriptors (with the same size) as
2600 returned from _CRS. This change affects the following resource descriptors:
2601 IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 9487)
2603 Fixed a problem where a CopyObject to RegionField, BankField, and IndexField
2604 objects did not perform an implicit conversion as it should. These types must
2605 retain their initial type permanently as per the ACPI specification. However,
2606 a CopyObject to all other object types should not perform an implicit
2607 conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388
2609 Fixed a problem with the AcpiGetDevices interface where the mechanism to
2610 match device CIDs did not examine the entire list of available CIDs, but
2611 instead aborted on the first non-matching CID. Andrew Patterson.
2613 Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro was
2614 inadvertently changed to return a 16-bit value instead of a 32-bit value,
2615 truncating the upper dword of a 64-bit value. This macro is only used to
2616 display debug output, so no incorrect calculations were made. Also,
2617 reimplemented the macro so that a 64-bit shift is not performed by
2618 inefficient compilers.
2620 Added missing va_end statements that should correspond with each va_start
2623 Example Code and Data Size: These are the sizes for the OS-independent
2624 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2625 debug version of the code includes the debug output trace mechanism and has
2626 a much larger code and data size.
2629 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
2630 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
2632 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
2633 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
2635 2) iASL Compiler/Disassembler and Tools:
2637 Implemented full disassembler support for the following new ACPI tables:
2638 BERT, EINJ, and ERST. Implemented partial disassembler support for the
2639 complicated HEST table. These tables support the Windows Hardware Error
2640 Architecture (WHEA).
2642 ----------------------------------------
2643 23 January 2008. Summary of changes for version 20080123:
2645 1) ACPI CA Core Subsystem:
2647 Added the 2008 copyright to all module headers and signons. This affects
2648 virtually every file in the ACPICA core subsystem, the iASL compiler, and
2649 the tools/utilities.
2651 Fixed a problem with the SizeOf operator when used with Package and Buffer
2652 objects. These objects have deferred execution for some arguments, and the
2653 execution is now completed before the SizeOf is executed. This problem caused
2654 unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) BZ
2657 Implemented an enhancement to the interpreter "slack mode". In the absence of
2658 an explicit return or an implicitly returned object from the last executed
2659 opcode, a control method will now implicitly return an integer of value 0 for
2660 Microsoft compatibility. (Lin Ming) BZ 392
2662 Fixed a problem with the Load operator where an exception was not returned in
2663 the case where the table is already loaded. (Lin Ming) BZ 463
2665 Implemented support for the use of DDBHandles as an Indexed Reference, as per
2666 the ACPI spec. (Lin Ming) BZ 486
2668 Implemented support for UserTerm (Method invocation) for the Unload operator
2669 as per the ACPI spec. (Lin Ming) BZ 580
2671 Fixed a problem with the LoadTable operator where the OemId and OemTableId
2672 input strings could cause unexpected failures if they were shorter than the
2673 maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576
2675 Implemented support for UserTerm (Method invocation) for the Unload operator
2676 as per the ACPI spec. (Lin Ming) BZ 580
2678 Implemented header file support for new ACPI tables - BERT, ERST, EINJ, HEST,
2679 IBFT, UEFI, WDAT. Disassembler support is forthcoming.
2681 Example Code and Data Size: These are the sizes for the OS-independent
2682 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2683 debug version of the code includes the debug output trace mechanism and has
2684 a much larger code and data size.
2687 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
2688 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
2690 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
2691 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
2693 2) iASL Compiler/Disassembler and Tools:
2695 Implemented support in the disassembler for checksum validation on incoming
2696 binary DSDTs and SSDTs. If incorrect, a message is displayed within the table
2697 header dump at the start of the disassembly.
2699 Implemented additional debugging information in the namespace listing file
2700 created during compilation. In addition to the namespace hierarchy, the full
2701 pathname to each namespace object is displayed.
2703 Fixed a problem with the disassembler where invalid ACPI tables could cause
2704 faults or infinite loops.
2706 Fixed an unexpected parse error when using the optional "parameter types"
2707 list in a control method declaration. (Lin Ming) BZ 397
2709 Fixed a problem where two External declarations with the same name did not
2710 cause an error (Lin Ming) BZ 509
2712 Implemented support for full TermArgs (adding Argx, Localx and method
2713 invocation) for the ParameterData parameter to the LoadTable operator. (Lin
2716 ----------------------------------------
2717 19 December 2007. Summary of changes for version 20071219:
2719 1) ACPI CA Core Subsystem:
2721 Implemented full support for deferred execution for the TermArg string
2722 arguments for DataTableRegion. This enables forward references and full
2723 operand resolution for the three string arguments. Similar to OperationRegion
2724 deferred argument execution.) Lin Ming. BZ 430
2726 Implemented full argument resolution support for the BankValue argument to
2727 BankField. Previously, only constants were supported, now any TermArg may be
2728 used. Lin Ming BZ 387, 393
2730 Fixed a problem with AcpiGetDevices where the search of a branch of the
2731 device tree could be terminated prematurely. In accordance with the ACPI
2732 specification, the search down the current branch is terminated if a device
2733 is both not present and not functional (instead of just not present.) Yakui
2736 Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly if
2737 the underlying AML code changed the GPE enable registers. Now, any unknown
2738 incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately disabled
2739 instead of simply ignored. Rui Zhang.
2741 Fixed a problem with Index Fields where the Index register was incorrectly
2742 limited to a maximum of 32 bits. Now any size may be used.
2744 Fixed a couple memory leaks associated with "implicit return" objects when
2745 the AML Interpreter slack mode is enabled. Lin Ming BZ 349
2747 Example Code and Data Size: These are the sizes for the OS-independent
2748 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2749 debug version of the code includes the debug output trace mechanism and has
2750 a much larger code and data size.
2753 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
2754 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
2756 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
2757 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
2759 ----------------------------------------
2760 14 November 2007. Summary of changes for version 20071114:
2762 1) ACPI CA Core Subsystem:
2764 Implemented event counters for each of the Fixed Events, the ACPI SCI
2765 (interrupt) itself, and control methods executed. Named
2766 AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. These
2767 should be useful for debugging and statistics.
2769 Implemented a new external interface, AcpiGetStatistics, to retrieve the
2770 contents of the various event counters. Returns the current values for
2771 AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and
2772 AcpiMethodCount. The interface can be expanded in the future if new counters
2773 are added. Device drivers should use this interface rather than access the
2776 Fixed a problem with the FromBCD and ToBCD operators. With some compilers,
2777 the ShortDivide function worked incorrectly, causing problems with the BCD
2778 functions with large input values. A truncation from 64-bit to 32-bit
2779 inadvertently occurred. Internal BZ 435. Lin Ming
2781 Fixed a problem with Index references passed as method arguments. References
2782 passed as arguments to control methods were dereferenced immediately (before
2783 control was passed to the called method). The references are now correctly
2784 passed directly to the called method. BZ 5389. Lin Ming
2786 Fixed a problem with CopyObject used in conjunction with the Index operator.
2787 The reference was incorrectly dereferenced before the copy. The reference is
2788 now correctly copied. BZ 5391. Lin Ming
2790 Fixed a problem with Control Method references within Package objects. These
2791 references are now correctly generated. This completes the package
2792 construction overhaul that began in version 20071019.
2794 Example Code and Data Size: These are the sizes for the OS-independent
2795 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2796 debug version of the code includes the debug output trace mechanism and has
2797 a much larger code and data size.
2800 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
2801 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
2803 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
2804 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
2807 2) iASL Compiler/Disassembler and Tools:
2809 The AcpiExec utility now installs handlers for all of the predefined
2810 Operation Region types. New types supported are: PCI_Config, CMOS, and
2813 Fixed a problem with the 64-bit version of AcpiExec where the extended (64-
2814 bit) address fields for the DSDT and FACS within the FADT were not being
2815 used, causing truncation of the upper 32-bits of these addresses. Lin Ming
2818 ----------------------------------------
2819 19 October 2007. Summary of changes for version 20071019:
2821 1) ACPI CA Core Subsystem:
2823 Fixed a problem with the Alias operator when the target of the alias is a
2824 named ASL operator that opens a new scope -- Scope, Device, PowerResource,
2825 Processor, and ThermalZone. In these cases, any children of the original
2826 operator could not be accessed via the alias, potentially causing unexpected
2827 AE_NOT_FOUND exceptions. (BZ 9067)
2829 Fixed a problem with the Package operator where all named references were
2830 created as object references and left otherwise unresolved. According to the
2831 ACPI specification, a Package can only contain Data Objects or references to
2832 control methods. The implication is that named references to Data Objects
2833 (Integer, Buffer, String, Package, BufferField, Field) should be resolved
2834 immediately upon package creation. This is the approach taken with this
2835 change. References to all other named objects (Methods, Devices, Scopes,
2836 etc.) are all now properly created as reference objects. (BZ 5328)
2838 Reverted a change to Notify handling that was introduced in version
2839 20070508. This version changed the Notify handling from asynchronous to
2840 fully synchronous (Device driver Notify handling with respect to the Notify
2841 ASL operator). It was found that this change caused more problems than it
2842 solved and was removed by most users.
2844 Fixed a problem with the Increment and Decrement operators where the type of
2845 the target object could be unexpectedly and incorrectly changed. (BZ 353)
2848 Fixed a problem with the Load and LoadTable operators where the table
2849 location within the namespace was ignored. Instead, the table was always
2850 loaded into the root or current scope. Lin Ming.
2852 Fixed a problem with the Load operator when loading a table from a buffer
2853 object. The input buffer was prematurely zeroed and/or deleted. (BZ 577)
2855 Fixed a problem with the Debug object where a store of a DdbHandle reference
2856 object to the Debug object could cause a fault.
2858 Added a table checksum verification for the Load operator, in the case where
2859 the load is from a buffer. (BZ 578).
2861 Implemented additional parameter validation for the LoadTable operator. The
2862 length of the input strings SignatureString, OemIdString, and OemTableId are
2863 now checked for maximum lengths. (BZ 582) Lin Ming.
2865 Example Code and Data Size: These are the sizes for the OS-independent
2866 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2867 debug version of the code includes the debug output trace mechanism and has
2868 a much larger code and data size.
2871 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
2872 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
2874 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
2875 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
2878 2) iASL Compiler/Disassembler:
2880 Fixed a problem where if a single file was specified and the file did not
2881 exist, no error message was emitted. (Introduced with wildcard support in
2884 ----------------------------------------
2885 19 September 2007. Summary of changes for version 20070919:
2887 1) ACPI CA Core Subsystem:
2889 Designed and implemented new external interfaces to install and remove
2890 handlers for ACPI table-related events. Current events that are defined are
2891 LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as
2892 they are dynamically loaded and unloaded. See AcpiInstallTableHandler and
2893 AcpiRemoveTableHandler. (Lin Ming and Bob Moore)
2895 Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag
2896 (acpi_serialized option on Linux) could cause some systems to hang during
2897 initialization. (Bob Moore) BZ 8171
2899 Fixed a problem where objects of certain types (Device, ThermalZone,
2900 Processor, PowerResource) can be not found if they are declared and
2901 referenced from within the same control method (Lin Ming) BZ 341
2903 Example Code and Data Size: These are the sizes for the OS-independent
2904 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2905 debug version of the code includes the debug output trace mechanism and has
2906 a much larger code and data size.
2909 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
2910 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
2912 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
2913 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
2916 2) iASL Compiler/Disassembler:
2918 Implemented support to allow multiple files to be compiled/disassembled in a
2919 single invocation. This includes command line wildcard support for both the
2920 Windows and Unix versions of the compiler. This feature simplifies the
2921 disassembly and compilation of multiple ACPI tables in a single directory.
2923 ----------------------------------------
2924 08 May 2007. Summary of changes for version 20070508:
2926 1) ACPI CA Core Subsystem:
2928 Implemented a Microsoft compatibility design change for the handling of the
2929 Notify AML operator. Previously, notify handlers were dispatched and
2930 executed completely asynchronously in a deferred thread. The new design
2931 still executes the notify handlers in a different thread, but the original
2932 thread that executed the Notify() now waits at a synchronization point for
2933 the notify handler to complete. Some machines depend on a synchronous Notify
2934 operator in order to operate correctly.
2936 Implemented support to allow Package objects to be passed as method
2937 arguments to the external AcpiEvaluateObject interface. Previously, this
2938 would return the AE_NOT_IMPLEMENTED exception. This feature had not been
2939 implemented since there were no reserved control methods that required it
2942 Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs that
2943 contained invalid non-zero values in reserved fields could cause later
2944 failures because these fields have meaning in later revisions of the FADT.
2945 For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The fields
2946 are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.)
2948 Fixed a problem where the Global Lock handle was not properly updated if a
2949 thread that acquired the Global Lock via executing AML code then attempted
2950 to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by Joe
2953 Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list
2954 could be corrupted if the interrupt being removed was at the head of the
2955 list. Reported by Linn Crosetto.
2957 Example Code and Data Size: These are the sizes for the OS-independent
2958 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2959 debug version of the code includes the debug output trace mechanism and has
2960 a much larger code and data size.
2963 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
2964 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
2966 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
2967 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
2969 ----------------------------------------
2970 20 March 2007. Summary of changes for version 20070320:
2972 1) ACPI CA Core Subsystem:
2974 Implemented a change to the order of interpretation and evaluation of AML
2975 operand objects within the AML interpreter. The interpreter now evaluates
2976 operands in the order that they appear in the AML stream (and the
2977 corresponding ASL code), instead of in the reverse order (after the entire
2978 operand list has been parsed). The previous behavior caused several subtle
2979 incompatibilities with the Microsoft AML interpreter as well as being
2980 somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov.
2982 Implemented a change to the ACPI Global Lock support. All interfaces to the
2983 global lock now allow the same thread to acquire the lock multiple times.
2984 This affects the AcpiAcquireGlobalLock external interface to the global lock
2985 as well as the internal use of the global lock to support AML fields -- a
2986 control method that is holding the global lock can now simultaneously access
2987 AML fields that require global lock protection. Previously, in both cases,
2988 this would have resulted in an AE_ALREADY_ACQUIRED exception. The change to
2989 AcpiAcquireGlobalLock is of special interest to drivers for the Embedded
2990 Controller. There is no change to the behavior of the AML Acquire operator,
2991 as this can already be used to acquire a mutex multiple times by the same
2992 thread. BZ 8066. With assistance from Alexey Starikovskiy.
2994 Fixed a problem where invalid objects could be referenced in the AML
2995 Interpreter after error conditions. During operand evaluation, ensure that
2996 the internal "Return Object" field is cleared on error and only valid
2997 pointers are stored there. Caused occasional access to deleted objects that
2998 resulted in "large reference count" warning messages. Valery Podrezov.
3000 Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur on
3001 deeply nested control method invocations. BZ 7873, local BZ 487. Valery
3004 Fixed an internal problem with the handling of result objects on the
3005 interpreter result stack. BZ 7872. Valery Podrezov.
3007 Removed obsolete code that handled the case where AML_NAME_OP is the target
3008 of a reference (Reference.Opcode). This code was no longer necessary. BZ
3009 7874. Valery Podrezov.
3011 Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This was a
3012 remnant from the previously discontinued 16-bit support.
3014 Example Code and Data Size: These are the sizes for the OS-independent
3015 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3016 debug version of the code includes the debug output trace mechanism and has
3017 a much larger code and data size.
3020 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
3021 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
3023 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
3024 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
3026 ----------------------------------------
3027 26 January 2007. Summary of changes for version 20070126:
3029 1) ACPI CA Core Subsystem:
3031 Added the 2007 copyright to all module headers and signons. This affects
3032 virtually every file in the ACPICA core subsystem, the iASL compiler, and
3035 Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable
3036 during a table load. A bad pointer was passed in the case where the DSDT is
3037 overridden, causing a fault in this case.
3039 Example Code and Data Size: These are the sizes for the OS-independent
3040 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3041 debug version of the code includes the debug output trace mechanism and has
3042 a much larger code and data size.
3045 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
3046 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
3048 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
3049 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
3051 ----------------------------------------
3052 15 December 2006. Summary of changes for version 20061215:
3054 1) ACPI CA Core Subsystem:
3056 Support for 16-bit ACPICA has been completely removed since it is no longer
3057 necessary and it clutters the code. All 16-bit macros, types, and
3058 conditional compiles have been removed, cleaning up and simplifying the code
3059 across the entire subsystem. DOS support is no longer needed since the
3060 bootable Linux firmware kit is now available.
3062 The handler for the Global Lock is now removed during AcpiTerminate to
3063 enable a clean subsystem restart, via the implementation of the
3064 AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz,
3067 Implemented enhancements to the multithreading support within the debugger
3068 to enable improved multithreading debugging and evaluation of the subsystem.
3071 Debugger: Enhanced the Statistics/Memory command to emit the total (maximum)
3072 memory used during the execution, as well as the maximum memory consumed by
3073 each of the various object types. (Valery Podrezov)
3075 Example Code and Data Size: These are the sizes for the OS-independent
3076 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3077 debug version of the code includes the debug output trace mechanism and has
3078 a much larger code and data size.
3081 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
3082 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
3084 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
3085 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
3088 2) iASL Compiler/Disassembler and Tools:
3090 AcpiExec: Implemented a new option (-m) to display full memory use
3091 statistics upon subsystem/program termination. (Valery Podrezov)
3093 ----------------------------------------
3094 09 November 2006. Summary of changes for version 20061109:
3096 1) ACPI CA Core Subsystem:
3098 Optimized the Load ASL operator in the case where the source operand is an
3099 operation region. Simply map the operation region memory, instead of
3100 performing a bytewise read. (Region must be of type SystemMemory, see
3103 Fixed the Load ASL operator for the case where the source operand is a
3104 region field. A buffer object is also allowed as the source operand. BZ 480
3106 Fixed a problem where the Load ASL operator allowed the source operand to be
3107 an operation region of any type. It is now restricted to regions of type
3108 SystemMemory, as per the ACPI specification. BZ 481
3110 Additional cleanup and optimizations for the new Table Manager code.
3112 AcpiEnable will now fail if all of the required ACPI tables are not loaded
3113 (FADT, FACS, DSDT). BZ 477
3115 Added #pragma pack(8/4) to acobject.h to ensure that the structures in this
3116 header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been
3117 manually optimized to be aligned and will not work if it is byte-packed.
3119 Example Code and Data Size: These are the sizes for the OS-independent
3120 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3121 debug version of the code includes the debug output trace mechanism and has
3122 a much larger code and data size.
3125 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
3126 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
3128 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
3129 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
3132 2) iASL Compiler/Disassembler and Tools:
3134 Fixed a problem where the presence of the _OSI predefined control method
3135 within complex expressions could cause an internal compiler error.
3137 AcpiExec: Implemented full region support for multiple address spaces.
3138 SpaceId is now part of the REGION object. BZ 429
3140 ----------------------------------------
3141 11 October 2006. Summary of changes for version 20061011:
3143 1) ACPI CA Core Subsystem:
3145 Completed an AML interpreter performance enhancement for control method
3146 execution. Previously a 2-pass parse/execution, control methods are now
3147 completely parsed and executed in a single pass. This improves overall
3148 interpreter performance by ~25%, reduces code size, and reduces CPU stack
3149 use. (Valery Podrezov + interpreter changes in version 20051202 that
3150 eliminated namespace loading during the pass one parse.)
3152 Implemented _CID support for PCI Root Bridge detection. If the _HID does not
3153 match the predefined PCI Root Bridge IDs, the _CID list (if present) is now
3154 obtained and also checked for an ID match.
3156 Implemented additional support for the PCI _ADR execution: upsearch until a
3157 device scope is found before executing _ADR. This allows PCI_Config
3158 operation regions to be declared locally within control methods underneath
3161 Fixed a problem with a possible race condition between threads executing
3162 AcpiWalkNamespace and the AML interpreter. This condition was removed by
3163 modifying AcpiWalkNamespace to (by default) ignore all temporary namespace
3164 entries created during any concurrent control method execution. An
3165 additional namespace race condition is known to exist between
3166 AcpiWalkNamespace and the Load/Unload ASL operators and is still under
3169 Restructured the AML ParseLoop function, breaking it into several
3170 subfunctions in order to reduce CPU stack use and improve maintainability.
3173 AcpiGetHandle: Fix for parameter validation to detect invalid combinations
3174 of prefix handle and pathname. BZ 478
3176 Example Code and Data Size: These are the sizes for the OS-independent
3177 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3178 debug version of the code includes the debug output trace mechanism and has
3179 a much larger code and data size.
3182 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
3183 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
3185 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
3186 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
3188 2) iASL Compiler/Disassembler and Tools:
3190 Ported the -g option (get local ACPI tables) to the new ACPICA Table Manager
3191 to restore original behavior.
3193 ----------------------------------------
3194 27 September 2006. Summary of changes for version 20060927:
3196 1) ACPI CA Core Subsystem:
3198 Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister.
3199 These functions now use a spinlock for mutual exclusion and the interrupt
3200 level indication flag is not needed.
3202 Fixed a problem with the Global Lock where the lock could appear to be
3203 obtained before it is actually obtained. The global lock semaphore was
3204 inadvertently created with one unit instead of zero units. (BZ 464) Fiodor
3207 Fixed a possible memory leak and fault in AcpiExResolveObjectToValue during
3208 a read from a buffer or region field. (BZ 458) Fiodor Suietov.
3210 Example Code and Data Size: These are the sizes for the OS-independent
3211 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3212 debug version of the code includes the debug output trace mechanism and has
3213 a much larger code and data size.
3216 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
3217 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
3219 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
3220 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
3223 2) iASL Compiler/Disassembler and Tools:
3225 Fixed a compilation problem with the pre-defined Resource Descriptor field
3226 names where an "object does not exist" error could be incorrectly generated
3227 if the parent ResourceTemplate pathname places the template within a
3228 different namespace scope than the current scope. (BZ 7212)
3230 Fixed a problem where the compiler could hang after syntax errors detected
3231 in an ElseIf construct. (BZ 453)
3233 Fixed a problem with the AmlFilename parameter to the DefinitionBlock()
3234 operator. An incorrect output filename was produced when this parameter was
3235 a null string (""). Now, the original input filename is used as the AML
3236 output filename, with an ".aml" extension.
3238 Implemented a generic batch command mode for the AcpiExec utility (execute
3239 any AML debugger command) (Valery Podrezov).
3241 ----------------------------------------
3242 12 September 2006. Summary of changes for version 20060912:
3244 1) ACPI CA Core Subsystem:
3246 Enhanced the implementation of the "serialized mode" of the interpreter
3247 (enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is
3248 specified, instead of creating a serialization semaphore per control method,
3249 the interpreter lock is simply no longer released before a blocking
3250 operation during control method execution. This effectively makes the AML
3251 Interpreter single-threaded. The overhead of a semaphore per-method is
3254 Fixed a regression where an error was no longer emitted if a control method
3255 attempts to create 2 objects of the same name. This once again returns
3256 AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism that
3257 will dynamically serialize the control method to possible prevent future
3260 Integrated a fix for a problem with PCI Express HID detection in the PCI
3261 Config Space setup procedure. (BZ 7145)
3263 Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the
3264 AcpiHwInitialize function - the FADT registers are now validated when the
3267 Added two new warnings during FADT verification - 1) if the FADT is larger
3268 than the largest known FADT version, and 2) if there is a mismatch between a
3269 32-bit block address and the 64-bit X counterpart (when both are non-zero.)
3271 Example Code and Data Size: These are the sizes for the OS-independent
3272 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3273 debug version of the code includes the debug output trace mechanism and has
3274 a much larger code and data size.
3277 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
3278 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
3280 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
3281 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
3284 2) iASL Compiler/Disassembler and Tools:
3286 Fixed a problem with the implementation of the Switch() operator where the
3287 temporary variable was declared too close to the actual Switch, instead of
3288 at method level. This could cause a problem if the Switch() operator is
3289 within a while loop, causing an error on the second iteration. (BZ 460)
3291 Disassembler - fix for error emitted for unknown type for target of scope
3292 operator. Now, ignore it and continue.
3294 Disassembly of an FADT now verifies the input FADT and reports any errors
3295 found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs.
3297 Disassembly of raw data buffers with byte initialization data now prefixes
3298 each output line with the current buffer offset.
3300 Disassembly of ASF! table now includes all variable-length data fields at
3301 the end of some of the subtables.
3303 The disassembler now emits a comment if a buffer appears to be a
3304 ResourceTemplate, but cannot be disassembled as such because the EndTag does
3305 not appear at the very end of the buffer.
3307 AcpiExec - Added the "-t" command line option to enable the serialized mode
3308 of the AML interpreter.
3310 ----------------------------------------
3311 31 August 2006. Summary of changes for version 20060831:
3313 1) ACPI CA Core Subsystem:
3315 Miscellaneous fixes for the Table Manager:
3316 - Correctly initialize internal common FADT for all 64-bit "X" fields
3317 - Fixed a couple table mapping issues during table load
3318 - Fixed a couple alignment issues for IA64
3319 - Initialize input array to zero in AcpiInitializeTables
3320 - Additional parameter validation for AcpiGetTable, AcpiGetTableHeader,
3323 Change for GPE support: when a "wake" GPE is received, all wake GPEs are now
3324 immediately disabled to prevent the waking GPE from firing again and to
3325 prevent other wake GPEs from interrupting the wake process.
3327 Added the AcpiGpeCount global that tracks the number of processed GPEs, to
3328 be used for debugging systems with a large number of ACPI interrupts.
3330 Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in
3331 both the ACPICA headers and the disassembler.
3333 Example Code and Data Size: These are the sizes for the OS-independent
3334 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3335 debug version of the code includes the debug output trace mechanism and has
3336 a much larger code and data size.
3339 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
3340 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
3342 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
3343 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
3346 2) iASL Compiler/Disassembler and Tools:
3348 Disassembler support for the DMAR ACPI table.
3350 ----------------------------------------
3351 23 August 2006. Summary of changes for version 20060823:
3353 1) ACPI CA Core Subsystem:
3355 The Table Manager component has been completely redesigned and
3356 reimplemented. The new design is much simpler, and reduces the overall code
3357 and data size of the kernel-resident ACPICA by approximately 5%. Also, it is
3358 now possible to obtain the ACPI tables very early during kernel
3359 initialization, even before dynamic memory management is initialized.
3360 (Alexey Starikovskiy, Fiodor Suietov, Bob Moore)
3362 Obsolete ACPICA interfaces:
3364 - AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel init
3366 - AcpiLoadTable: Not needed.
3367 - AcpiUnloadTable: Not needed.
3369 New ACPICA interfaces:
3371 - AcpiInitializeTables: Must be called before the table manager can be used.
3372 - AcpiReallocateRootTable: Used to transfer the root table to dynamically
3373 allocated memory after it becomes available.
3374 - AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI tables
3377 Other ACPICA changes:
3379 - AcpiGetTableHeader returns the actual mapped table header, not a copy. Use
3380 AcpiOsUnmapMemory to free this mapping.
3381 - AcpiGetTable returns the actual mapped table. The mapping is managed
3382 internally and must not be deleted by the caller. Use of this interface
3383 causes no additional dynamic memory allocation.
3384 - AcpiFindRootPointer: Support for physical addressing has been eliminated,
3385 it appeared to be unused.
3386 - The interface to AcpiOsMapMemory has changed to be consistent with the
3387 other allocation interfaces.
3388 - The interface to AcpiOsGetRootPointer has changed to eliminate unnecessary
3390 - ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 64-
3391 bit platforms. Was previously 64 bits on all platforms.
3392 - The interface to the ACPI Global Lock acquire/release macros have changed
3393 slightly since ACPICA no longer keeps a local copy of the FACS with a
3394 constructed pointer to the actual global lock.
3396 Porting to the new table manager:
3398 - AcpiInitializeTables: Must be called once, and can be called anytime
3399 during the OS initialization process. It allows the host to specify an area
3400 of memory to be used to store the internal version of the RSDT/XSDT (root
3401 table). This allows the host to access ACPI tables before memory management
3402 is initialized and running.
3403 - AcpiReallocateRootTable: Can be called after memory management is running
3404 to copy the root table to a dynamically allocated array, freeing up the
3405 scratch memory specified in the call to AcpiInitializeTables.
3406 - AcpiSubsystemInitialize: This existing interface is independent of the
3407 Table Manager, and does not have to be called before the Table Manager can
3408 be used, it only must be called before the rest of ACPICA can be used.
3409 - ACPI Tables: Some changes have been made to the names and structure of the
3410 actbl.h and actbl1.h header files and may require changes to existing code.
3411 For example, bitfields have been completely removed because of their lack of
3412 portability across C compilers.
3413 - Update interfaces to the Global Lock acquire/release macros if local
3414 versions are used. (see acwin.h)
3416 Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c
3420 Example Code and Data Size: These are the sizes for the OS-independent
3421 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3422 debug version of the code includes the debug output trace mechanism and has
3423 a much larger code and data size.
3426 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
3427 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
3429 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
3430 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
3433 2) iASL Compiler/Disassembler and Tools:
3435 No changes for this release.
3437 ----------------------------------------
3438 21 July 2006. Summary of changes for version 20060721:
3440 1) ACPI CA Core Subsystem:
3442 The full source code for the ASL test suite used to validate the iASL
3443 compiler and the ACPICA core subsystem is being released with the ACPICA
3444 source for the first time. The source is contained in a separate package and
3445 consists of over 1100 files that exercise all ASL/AML operators. The package
3446 should appear on the Intel/ACPI web site shortly. (Valery Podrezov, Fiodor
3449 Completed a new design and implementation for support of the ACPI Global
3450 Lock. On the OS side, the global lock is now treated as a standard AML
3451 mutex. Previously, multiple OS threads could "acquire" the global lock
3452 simultaneously. However, this could cause the BIOS to be starved out of the
3453 lock - especially in cases such as the Embedded Controller driver where
3454 there is a tight coupling between the OS and the BIOS.
3456 Implemented an optimization for the ACPI Global Lock interrupt mechanism.
3457 The Global Lock interrupt handler no longer queues the execution of a
3458 separate thread to signal the global lock semaphore. Instead, the semaphore
3459 is signaled directly from the interrupt handler.
3461 Implemented support within the AML interpreter for package objects that
3462 contain a larger AML length (package list length) than the package element
3463 count. In this case, the length of the package is truncated to match the
3464 package element count. Some BIOS code apparently modifies the package length
3465 on the fly, and this change supports this behavior. Provides compatibility
3466 with the MS AML interpreter. (With assistance from Fiodor Suietov)
3468 Implemented a temporary fix for the BankValue parameter of a Bank Field to
3469 support all constant values, now including the Zero and One opcodes.
3470 Evaluation of this parameter must eventually be converted to a full TermArg
3471 evaluation. A not-implemented error is now returned (temporarily) for non-
3472 constant values for this parameter.
3474 Fixed problem reports (Fiodor Suietov) integrated:
3475 - Fix for premature object deletion after CopyObject on Operation Region (BZ
3478 Example Code and Data Size: These are the sizes for the OS-independent
3479 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3480 debug version of the code includes the debug output trace mechanism and has
3481 a much larger code and data size.
3484 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total
3485 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total
3487 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
3488 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
3491 2) iASL Compiler/Disassembler and Tools:
3493 No changes for this release.
3495 ----------------------------------------
3496 07 July 2006. Summary of changes for version 20060707:
3498 1) ACPI CA Core Subsystem:
3500 Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers
3501 that do not allow the initialization of address pointers within packed
3502 structures - even though the hardware itself may support misaligned
3503 transfers. Some of the debug data structures are packed by default to
3506 Added an error message for the case where AcpiOsGetThreadId() returns zero.
3507 A non-zero value is required by the core ACPICA code to ensure the proper
3508 operation of AML mutexes and recursive control methods.
3510 The DSDT is now the only ACPI table that determines whether the AML
3511 interpreter is in 32-bit or 64-bit mode. Not really a functional change, but
3512 the hooks for per-table 32/64 switching have been removed from the code. A
3513 clarification to the ACPI specification is forthcoming in ACPI 3.0B.
3515 Fixed a possible leak of an OwnerID in the error path of
3516 AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID
3517 deletion to a single place in AcpiTbUninstallTable to correct possible leaks
3518 when using the AcpiTbDeleteTablesByType interface (with assistance from
3521 Fixed a problem with Serialized control methods where the semaphore
3522 associated with the method could be over-signaled after multiple method
3525 Fixed two issues with the locking of the internal namespace data structure.
3526 Both the Unload() operator and AcpiUnloadTable interface now lock the
3527 namespace during the namespace deletion associated with the table unload
3528 (with assistance from Linn Crosetto.)
3530 Fixed problem reports (Valery Podrezov) integrated:
3531 - Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426)
3533 Fixed problem reports (Fiodor Suietov) integrated:
3534 - Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369)
3535 - On Address Space handler deletion, needless deactivation call (BZ 374)
3536 - AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 375)
3537 - Possible memory leak, Notify sub-objects of Processor, Power, ThermalZone
3539 - AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378)
3540 - Minimum Length of RSDT should be validated (BZ 379)
3541 - AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no
3543 - AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type loaded
3546 Example Code and Data Size: These are the sizes for the OS-independent
3547 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3548 debug version of the code includes the debug output trace mechanism and has
3549 a much larger code and data size.
3552 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
3553 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
3555 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
3556 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
3559 2) iASL Compiler/Disassembler and Tools:
3561 Fixed problem reports:
3562 Compiler segfault when ASL contains a long (>1024) String declaration (BZ
3565 ----------------------------------------
3566 23 June 2006. Summary of changes for version 20060623:
3568 1) ACPI CA Core Subsystem:
3570 Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This
3571 allows the type to be customized to the host OS for improved efficiency
3572 (since a spinlock is usually a very small object.)
3574 Implemented support for "ignored" bits in the ACPI registers. According to
3575 the ACPI specification, these bits should be preserved when writing the
3576 registers via a read/modify/write cycle. There are 3 bits preserved in this
3577 manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11].
3579 Implemented the initial deployment of new OSL mutex interfaces. Since some
3580 host operating systems have separate mutex and semaphore objects, this
3581 feature was requested. The base code now uses mutexes (and the new mutex
3582 interfaces) wherever a binary semaphore was used previously. However, for
3583 the current release, the mutex interfaces are defined as macros to map them
3584 to the existing semaphore interfaces. Therefore, no OSL changes are required
3585 at this time. (See acpiosxf.h)
3587 Fixed several problems with the support for the control method SyncLevel
3588 parameter. The SyncLevel now works according to the ACPI specification and
3589 in concert with the Mutex SyncLevel parameter, since the current SyncLevel
3590 is a property of the executing thread. Mutual exclusion for control methods
3591 is now implemented with a mutex instead of a semaphore.
3593 Fixed three instances of the use of the C shift operator in the bitfield
3594 support code (exfldio.c) to avoid the use of a shift value larger than the
3595 target data width. The behavior of C compilers is undefined in this case and
3596 can cause unpredictable results, and therefore the case must be detected and
3597 avoided. (Fiodor Suietov)
3599 Added an info message whenever an SSDT or OEM table is loaded dynamically
3600 via the Load() or LoadTable() ASL operators. This should improve debugging
3601 capability since it will show exactly what tables have been loaded (beyond
3602 the tables present in the RSDT/XSDT.)
3604 Example Code and Data Size: These are the sizes for the OS-independent
3605 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3606 debug version of the code includes the debug output trace mechanism and has
3607 a much larger code and data size.
3610 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
3611 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
3613 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
3614 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
3617 2) iASL Compiler/Disassembler and Tools:
3619 No changes for this release.
3621 ----------------------------------------
3622 08 June 2006. Summary of changes for version 20060608:
3624 1) ACPI CA Core Subsystem:
3626 Converted the locking mutex used for the ACPI hardware to a spinlock. This
3627 change should eliminate all problems caused by attempting to acquire a
3628 semaphore at interrupt level, and it means that all ACPICA external
3629 interfaces that directly access the ACPI hardware can be safely called from
3630 interrupt level. OSL code that implements the semaphore interfaces should be
3631 able to eliminate any workarounds for being called at interrupt level.
3633 Fixed a regression introduced in 20060526 where the ACPI device
3634 initialization could be prematurely aborted with an AE_NOT_FOUND if a device
3635 did not have an optional _INI method.
3637 Fixed an IndexField issue where a write to the Data Register should be
3638 limited in size to the AccessSize (width) of the IndexField itself. (BZ 433,
3641 Fixed problem reports (Valery Podrezov) integrated:
3642 - Allow store of ThermalZone objects to Debug object (BZ 5369/5370)
3644 Fixed problem reports (Fiodor Suietov) integrated:
3645 - AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364)
3647 Removed four global mutexes that were obsolete and were no longer being
3650 Example Code and Data Size: These are the sizes for the OS-independent
3651 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3652 debug version of the code includes the debug output trace mechanism and has
3653 a much larger code and data size.
3656 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
3657 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
3659 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
3660 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
3663 2) iASL Compiler/Disassembler and Tools:
3665 Fixed a fault when using -g option (get tables from registry) on Windows
3668 Fixed problem reports integrated:
3669 - Generate error if CreateField NumBits parameter is zero. (BZ 405)
3670 - Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor
3672 - Global table revision override (-r) is ignored (BZ 413)
3674 ----------------------------------------
3675 26 May 2006. Summary of changes for version 20060526:
3677 1) ACPI CA Core Subsystem:
3679 Restructured, flattened, and simplified the internal interfaces for
3680 namespace object evaluation - resulting in smaller code, less CPU stack use,
3681 and fewer interfaces. (With assistance from Mikhail Kouzmich)
3683 Fixed a problem with the CopyObject operator where the first parameter was
3684 not typed correctly for the parser, interpreter, compiler, and disassembler.
3685 Caused various errors and unexpected behavior.
3687 Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits
3688 produced incorrect results with some C compilers. Since the behavior of C
3689 compilers when the shift value is larger than the datatype width is
3690 apparently not well defined, the interpreter now detects this condition and
3691 simply returns zero as expected in all such cases. (BZ 395)
3693 Fixed problem reports (Valery Podrezov) integrated:
3694 - Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329)
3695 - Allow interpreter to handle nested method declarations (BZ 5361)
3697 Fixed problem reports (Fiodor Suietov) integrated:
3698 - AcpiTerminate doesn't free debug memory allocation list objects (BZ 355)
3699 - After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 356)
3700 - AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357)
3701 - Resource Manager should return AE_TYPE for non-device objects (BZ 358)
3702 - Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359)
3703 - Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360)
3704 - Incomplete cleanup branch in AcpiPsParseAml (BZ 361)
3705 - Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362)
3706 - AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ 365)
3707 - Status of the Global Initialization Handler call not used (BZ 366)
3708 - Incorrect object parameter to Global Initialization Handler (BZ 367)
3710 Example Code and Data Size: These are the sizes for the OS-independent
3711 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3712 debug version of the code includes the debug output trace mechanism and has
3713 a much larger code and data size.
3716 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
3717 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
3719 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
3720 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
3723 2) iASL Compiler/Disassembler and Tools:
3725 Modified the parser to allow the names IO, DMA, and IRQ to be used as
3726 namespace identifiers with no collision with existing resource descriptor
3727 macro names. This provides compatibility with other ASL compilers and is
3728 most useful for disassembly/recompilation of existing tables without parse
3729 errors. (With assistance from Thomas Renninger)
3731 Disassembler: fixed an incorrect disassembly problem with the
3732 DataTableRegion and CopyObject operators. Fixed a possible fault during
3733 disassembly of some Alias operators.
3735 ----------------------------------------
3736 12 May 2006. Summary of changes for version 20060512:
3738 1) ACPI CA Core Subsystem:
3740 Replaced the AcpiOsQueueForExecution interface with a new interface named
3741 AcpiOsExecute. The major difference is that the new interface does not have
3742 a Priority parameter, this appeared to be useless and has been replaced by a
3743 Type parameter. The Type tells the host what type of execution is being
3744 requested, such as global lock handler, notify handler, GPE handler, etc.
3745 This allows the host to queue and execute the request as appropriate for the
3746 request type, possibly using different work queues and different priorities
3747 for the various request types. This enables fixes for multithreading
3748 deadlock problems such as BZ #5534, and will require changes to all existing
3749 OS interface layers. (Alexey Starikovskiy and Bob Moore)
3751 Fixed a possible memory leak associated with the support for the so-called
3752 "implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor
3755 Fixed a problem with the Load() operator where a table load from an
3756 operation region could overwrite an internal table buffer by up to 7 bytes
3757 and cause alignment faults on IPF systems. (With assistance from Luming Yu)
3759 Example Code and Data Size: These are the sizes for the OS-independent
3760 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3761 debug version of the code includes the debug output trace mechanism and has
3762 a much larger code and data size.
3765 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
3766 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
3768 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
3769 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
3773 2) iASL Compiler/Disassembler and Tools:
3775 Disassembler: Implemented support to cross reference the internal namespace
3776 and automatically generate ASL External() statements for symbols not defined
3777 within the current table being disassembled. This will simplify the
3778 disassembly and recompilation of interdependent tables such as SSDTs since
3779 these statements will no longer have to be added manually.
3781 Disassembler: Implemented experimental support to automatically detect
3782 invocations of external control methods and generate appropriate External()
3783 statements. This is problematic because the AML cannot be correctly parsed
3784 until the number of arguments for each control method is known. Currently,
3785 standalone method invocations and invocations as the source operand of a
3786 Store() statement are supported.
3788 Disassembler: Implemented support for the ASL pseudo-operators LNotEqual,
3789 LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()),
3790 LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code
3791 more readable and likely closer to the original ASL source.
3793 ----------------------------------------
3794 21 April 2006. Summary of changes for version 20060421:
3796 1) ACPI CA Core Subsystem:
3798 Removed a device initialization optimization introduced in 20051216 where
3799 the _STA method was not run unless an _INI was also present for the same
3800 device. This optimization could cause problems because it could allow _INI
3801 methods to be run within a not-present device subtree. (If a not-present
3802 device had no _INI, _STA would not be run, the not-present status would not
3803 be discovered, and the children of the device would be incorrectly
3806 Implemented a new _STA optimization where namespace subtrees that do not
3807 contain _INI are identified and ignored during device initialization.
3808 Selectively running _STA can significantly improve boot time on large
3809 machines (with assistance from Len Brown.)
3811 Implemented support for the device initialization case where the returned
3812 _STA flags indicate a device not-present but functioning. In this case, _INI
3813 is not run, but the device children are examined for presence, as per the
3816 Implemented an additional change to the IndexField support in order to
3817 conform to MS behavior. The value written to the Index Register is not
3818 simply a byte offset, it is a byte offset in units of the access width of
3819 the parent Index Field. (Fiodor Suietov)
3821 Defined and deployed a new OSL interface, AcpiOsValidateAddress. This
3822 interface is called during the creation of all AML operation regions, and
3823 allows the host OS to exert control over what addresses it will allow the
3824 AML code to access. Operation Regions whose addresses are disallowed will
3825 cause a runtime exception when they are actually accessed (will not affect
3826 or abort table loading.) See oswinxf or osunixxf for an example
3829 Defined and deployed a new OSL interface, AcpiOsValidateInterface. This
3830 interface allows the host OS to match the various "optional"
3831 interface/behavior strings for the _OSI predefined control method as
3832 appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf
3833 for an example implementation.
3835 Restructured and corrected various problems in the exception handling code
3836 paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod
3837 (with assistance from Takayoshi Kochi.)
3839 Modified the Linux source converter to ignore quoted string literals while
3840 converting identifiers from mixed to lower case. This will correct problems
3841 with the disassembler and other areas where such strings must not be
3844 The ACPI_FUNCTION_* macros no longer require quotes around the function
3845 name. This allows the Linux source converter to convert the names, now that
3846 the converter ignores quoted strings.
3848 Example Code and Data Size: These are the sizes for the OS-independent
3849 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3850 debug version of the code includes the debug output trace mechanism and has
3851 a much larger code and data size.
3855 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
3856 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
3858 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
3859 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
3862 2) iASL Compiler/Disassembler and Tools:
3864 Implemented 3 new warnings for iASL, and implemented multiple warning levels
3867 1) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is not
3868 WAIT_FOREVER (0xFFFF) and the code does not examine the return value to
3869 check for the possible timeout, a warning is issued.
3871 2) Useless operators: If an ASL operator does not specify an optional target
3872 operand and it also does not use the function return value from the
3873 operator, a warning is issued since the operator effectively does nothing.
3875 3) Unreferenced objects: If a namespace object is created, but never
3876 referenced, a warning is issued. This is a warning level 2 since there are
3877 cases where this is ok, such as when a secondary table is loaded that uses
3878 the unreferenced objects. Even so, care is taken to only flag objects that
3879 don't look like they will ever be used. For example, the reserved methods
3880 (starting with an underscore) are usually not referenced because it is
3881 expected that the OS will invoke them.
3883 ----------------------------------------
3884 31 March 2006. Summary of changes for version 20060331:
3886 1) ACPI CA Core Subsystem:
3888 Implemented header file support for the following additional ACPI tables:
3889 ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this support,
3890 all current and known ACPI tables are now defined in the ACPICA headers and
3891 are available for use by device drivers and other software.
3893 Implemented support to allow tables that contain ACPI names with invalid
3894 characters to be loaded. Previously, this would cause the table load to
3895 fail, but since there are several known cases of such tables on existing
3896 machines, this change was made to enable ACPI support for them. Also, this
3897 matches the behavior of the Microsoft ACPI implementation.
3899 Fixed a couple regressions introduced during the memory optimization in the
3900 20060317 release. The namespace node definition required additional
3901 reorganization and an internal datatype that had been changed to 8-bit was
3902 restored to 32-bit. (Valery Podrezov)
3904 Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState
3905 could be passed through to AcpiOsReleaseObject which is unexpected. Such
3906 null pointers are now trapped and ignored, matching the behavior of the
3907 previous implementation before the deployment of AcpiOsReleaseObject.
3908 (Valery Podrezov, Fiodor Suietov)
3910 Fixed a memory mapping leak during the deletion of a SystemMemory operation
3911 region where a cached memory mapping was not deleted. This became a
3912 noticeable problem for operation regions that are defined within frequently
3913 used control methods. (Dana Meyers)
3915 Reorganized the ACPI table header files into two main files: one for the
3916 ACPI tables consumed by the ACPICA core, and another for the miscellaneous
3917 ACPI tables that are consumed by the drivers and other software. The various
3918 FADT definitions were merged into one common section and three different
3919 tables (ACPI 1.0, 1.0+, and 2.0)
3921 Example Code and Data Size: These are the sizes for the OS-independent
3922 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3923 debug version of the code includes the debug output trace mechanism and has
3924 a much larger code and data size.
3927 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
3928 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
3930 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
3931 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
3934 2) iASL Compiler/Disassembler and Tools:
3936 Disassembler: Implemented support to decode and format all non-AML ACPI
3937 tables (tables other than DSDTs and SSDTs.) This includes the new tables
3938 added to the ACPICA headers, therefore all current and known ACPI tables are
3941 Disassembler: The change to allow ACPI names with invalid characters also
3942 enables the disassembly of such tables. Invalid characters within names are
3943 changed to '*' to make the name printable; the iASL compiler will still
3944 generate an error for such names, however, since this is an invalid ACPI
3947 Implemented an option for AcpiXtract (-a) to extract all tables found in the
3948 input file. The default invocation extracts only the DSDTs and SSDTs.
3950 Fixed a couple of gcc generation issues for iASL and AcpiExec and added a
3951 makefile for the AcpiXtract utility.
3953 ----------------------------------------
3954 17 March 2006. Summary of changes for version 20060317:
3956 1) ACPI CA Core Subsystem:
3958 Implemented the use of a cache object for all internal namespace nodes.
3959 Since there are about 1000 static nodes in a typical system, this will
3960 decrease memory use for cache implementations that minimize per-allocation
3961 overhead (such as a slab allocator.)
3963 Removed the reference count mechanism for internal namespace nodes, since it
3964 was deemed unnecessary. This reduces the size of each namespace node by
3965 about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit case,
3966 and 32 bytes for the 64-bit case.
3968 Optimized several internal data structures to reduce object size on 64-bit
3969 platforms by packing data within the 64-bit alignment. This includes the
3970 frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static
3971 instances corresponding to the namespace objects.
3973 Added two new strings for the predefined _OSI method: "Windows 2001.1 SP1"
3976 Split the allocation tracking mechanism out to a separate file, from
3977 utalloc.c to uttrack.c. This mechanism appears to be only useful for
3978 application-level code. Kernels may wish to not include uttrack.c in
3981 Removed all remnants of the obsolete ACPI_REPORT_* macros and the associated
3982 code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING
3985 Code and Data Size: These are the sizes for the acpica.lib produced by the
3986 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI
3987 driver or OSPM code. The debug version of the code includes the debug output
3988 trace mechanism and has a much larger code and data size. Note that these
3989 values will vary depending on the efficiency of the compiler and the
3990 compiler options used during generation.
3993 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
3994 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
3996 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
3997 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
4000 2) iASL Compiler/Disassembler and Tools:
4002 Implemented an ANSI C version of the acpixtract utility. This version will
4003 automatically extract the DSDT and all SSDTs from the input acpidump text
4004 file and dump the binary output to separate files. It can also display a
4005 summary of the input file including the headers for each table found and
4006 will extract any single ACPI table, with any signature. (See
4007 source/tools/acpixtract)
4009 ----------------------------------------
4010 10 March 2006. Summary of changes for version 20060310:
4012 1) ACPI CA Core Subsystem:
4014 Tagged all external interfaces to the subsystem with the new
4015 ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to assist
4016 kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL
4017 macro. The default definition is NULL.
4019 Added the ACPI_THREAD_ID type for the return value from AcpiOsGetThreadId.
4020 This allows the host to define this as necessary to simplify kernel
4021 integration. The default definition is ACPI_NATIVE_UINT.
4023 Fixed two interpreter problems related to error processing, the deletion of
4024 objects, and placing invalid pointers onto the internal operator result
4025 stack. BZ 6028, 6151 (Valery Podrezov)
4027 Increased the reference count threshold where a warning is emitted for large
4028 reference counts in order to eliminate unnecessary warnings on systems with
4029 large namespaces (especially 64-bit.) Increased the value from 0x400 to
4032 Due to universal disagreement as to the meaning of the 'c' in the calloc()
4033 function, the ACPI_MEM_CALLOCATE macro has been renamed to
4034 ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'.
4035 ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and
4038 Code and Data Size: These are the sizes for the acpica.lib produced by the
4039 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI
4040 driver or OSPM code. The debug version of the code includes the debug output
4041 trace mechanism and has a much larger code and data size. Note that these
4042 values will vary depending on the efficiency of the compiler and the
4043 compiler options used during generation.
4046 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
4047 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
4049 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
4050 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
4053 2) iASL Compiler/Disassembler:
4055 Disassembler: implemented support for symbolic resource descriptor
4056 references. If a CreateXxxxField operator references a fixed offset within a
4057 resource descriptor, a name is assigned to the descriptor and the offset is
4058 translated to the appropriate resource tag and pathname. The addition of
4059 this support brings the disassembled code very close to the original ASL
4060 source code and helps eliminate run-time errors when the disassembled code
4061 is modified (and recompiled) in such a way as to invalidate the original
4064 Implemented support for a Descriptor Name as the last parameter to the ASL
4065 Register() macro. This parameter was inadvertently left out of the ACPI
4066 specification, and will be added for ACPI 3.0b.
4068 Fixed a problem where the use of the "_OSI" string (versus the full path
4069 "\_OSI") caused an internal compiler error. ("No back ptr to op")
4071 Fixed a problem with the error message that occurs when an invalid string is
4072 used for a _HID object (such as one with an embedded asterisk: "*PNP010A".)
4073 The correct message is now displayed.
4075 ----------------------------------------
4076 17 February 2006. Summary of changes for version 20060217:
4078 1) ACPI CA Core Subsystem:
4080 Implemented a change to the IndexField support to match the behavior of the
4081 Microsoft AML interpreter. The value written to the Index register is now a
4082 byte offset, no longer an index based upon the width of the Data register.
4083 This should fix IndexField problems seen on some machines where the Data
4084 register is not exactly one byte wide. The ACPI specification will be
4085 clarified on this point.
4087 Fixed a problem where several resource descriptor types could overrun the
4088 internal descriptor buffer due to size miscalculation: VendorShort,
4089 VendorLong, and Interrupt. This was noticed on IA64 machines, but could
4090 affect all platforms.
4092 Fixed a problem where individual resource descriptors were misaligned within
4093 the internal buffer, causing alignment faults on IA64 platforms.
4095 Code and Data Size: These are the sizes for the acpica.lib produced by the
4096 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI
4097 driver or OSPM code. The debug version of the code includes the debug output
4098 trace mechanism and has a much larger code and data size. Note that these
4099 values will vary depending on the efficiency of the compiler and the
4100 compiler options used during generation.
4103 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
4104 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
4106 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
4107 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
4110 2) iASL Compiler/Disassembler:
4112 Implemented support for new reserved names: _WDG and _WED are Microsoft
4113 extensions for Windows Instrumentation Management, _TDL is a new ACPI-
4114 defined method (Throttling Depth Limit.)
4116 Fixed a problem where a zero-length VendorShort or VendorLong resource
4117 descriptor was incorrectly emitted as a descriptor of length one.
4119 ----------------------------------------
4120 10 February 2006. Summary of changes for version 20060210:
4122 1) ACPI CA Core Subsystem:
4124 Removed a couple of extraneous ACPI_ERROR messages that appeared during
4125 normal execution. These became apparent after the conversion from
4128 Fixed a problem where the CreateField operator could hang if the BitIndex or
4129 NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359)
4131 Fixed a problem where a DeRefOf operation on a buffer object incorrectly
4132 failed with an exception. This also fixes a couple of related RefOf and
4133 DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387)
4135 Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead of
4136 AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, BZ
4139 Implemented a memory cleanup at the end of the execution of each iteration
4140 of an AML While() loop, preventing the accumulation of outstanding objects.
4141 (Valery Podrezov, BZ 5427)
4143 Eliminated a chunk of duplicate code in the object resolution code. (Valery
4146 Fixed several warnings during the 64-bit code generation.
4148 The AcpiSrc source code conversion tool now inserts one line of whitespace
4149 after an if() statement that is followed immediately by a comment, improving
4150 readability of the Linux code.
4152 Code and Data Size: The current and previous library sizes for the core
4153 subsystem are shown below. These are the code and data sizes for the
4154 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
4155 values do not include any ACPI driver or OSPM code. The debug version of the
4156 code includes the debug output trace mechanism and has a much larger code
4157 and data size. Note that these values will vary depending on the efficiency
4158 of the compiler and the compiler options used during generation.
4161 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
4162 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
4164 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
4165 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
4168 2) iASL Compiler/Disassembler:
4170 Fixed a problem with the disassembly of a BankField operator with a complex
4171 expression for the BankValue parameter.
4173 ----------------------------------------
4174 27 January 2006. Summary of changes for version 20060127:
4176 1) ACPI CA Core Subsystem:
4178 Implemented support in the Resource Manager to allow unresolved namestring
4179 references within resource package objects for the _PRT method. This support
4180 is in addition to the previously implemented unresolved reference support
4181 within the AML parser. If the interpreter slack mode is enabled, these
4182 unresolved references will be passed through to the caller as a NULL package
4185 Implemented and deployed new macros and functions for error and warning
4186 messages across the subsystem. These macros are simpler and generate less
4187 code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION,
4188 ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older
4189 macros remain defined to allow ACPI drivers time to migrate to the new
4192 Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of the
4193 Acquire/Release Lock OSL interfaces.
4195 Fixed a problem where Alias ASL operators are sometimes not correctly
4196 resolved, in both the interpreter and the iASL compiler.
4198 Fixed several problems with the implementation of the ConcatenateResTemplate
4199 ASL operator. As per the ACPI specification, zero length buffers are now
4200 treated as a single EndTag. One-length buffers always cause a fatal
4201 exception. Non-zero length buffers that do not end with a full 2-byte EndTag
4202 cause a fatal exception.
4204 Fixed a possible structure overwrite in the AcpiGetObjectInfo external
4205 interface. (With assistance from Thomas Renninger)
4207 Code and Data Size: The current and previous library sizes for the core
4208 subsystem are shown below. These are the code and data sizes for the
4209 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
4210 values do not include any ACPI driver or OSPM code. The debug version of the
4211 code includes the debug output trace mechanism and has a much larger code
4212 and data size. Note that these values will vary depending on the efficiency
4213 of the compiler and the compiler options used during generation.
4216 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
4217 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
4219 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
4220 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
4223 2) iASL Compiler/Disassembler:
4225 Fixed an internal error that was generated for any forward references to ASL
4228 ----------------------------------------
4229 13 January 2006. Summary of changes for version 20060113:
4231 1) ACPI CA Core Subsystem:
4233 Added 2006 copyright to all module headers and signons. This affects
4234 virtually every file in the ACPICA core subsystem, iASL compiler, and the
4237 Enhanced the ACPICA error reporting in order to simplify user migration to
4238 the non-debug version of ACPICA. Replaced all instances of the
4239 ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN debug
4240 levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros,
4241 respectively. This preserves all error and warning messages in the non-debug
4242 version of the ACPICA code (this has been referred to as the "debug lite"
4243 option.) Over 200 cases were converted to create a total of over 380
4244 error/warning messages across the ACPICA code. This increases the code and
4245 data size of the default non-debug version of the code somewhat (about 13K),
4246 but all error/warning reporting may be disabled if desired (and code
4247 eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time
4248 configuration option. The size of the debug version of ACPICA remains about
4251 Fixed a memory leak within the AML Debugger "Set" command. One object was
4252 not properly deleted for every successful invocation of the command.
4254 Code and Data Size: The current and previous library sizes for the core
4255 subsystem are shown below. These are the code and data sizes for the
4256 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
4257 values do not include any ACPI driver or OSPM code. The debug version of the
4258 code includes the debug output trace mechanism and has a much larger code
4259 and data size. Note that these values will vary depending on the efficiency
4260 of the compiler and the compiler options used during generation.
4263 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
4264 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
4266 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
4267 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
4270 2) iASL Compiler/Disassembler:
4272 The compiler now officially supports the ACPI 3.0a specification that was
4273 released on December 30, 2005. (Specification is available at www.acpi.info)
4275 ----------------------------------------
4276 16 December 2005. Summary of changes for version 20051216:
4278 1) ACPI CA Core Subsystem:
4280 Implemented optional support to allow unresolved names within ASL Package
4281 objects. A null object is inserted in the package when a named reference
4282 cannot be located in the current namespace. Enabled via the interpreter
4283 slack flag, this should eliminate AE_NOT_FOUND exceptions seen on machines
4284 that contain such code.
4286 Implemented an optimization to the initialization sequence that can improve
4287 boot time. During ACPI device initialization, the _STA method is now run if
4288 and only if the _INI method exists. The _STA method is used to determine if
4289 the device is present; An _INI can only be run if _STA returns present, but
4290 it is a waste of time to run the _STA method if the _INI does not exist.
4291 (Prototype and assistance from Dong Wei)
4293 Implemented use of the C99 uintptr_t for the pointer casting macros if it is
4294 available in the current compiler. Otherwise, the default (void *) cast is
4297 Fixed some possible memory leaks found within the execution path of the
4298 Break, Continue, If, and CreateField operators. (Valery Podrezov)
4300 Fixed a problem introduced in the 20051202 release where an exception is
4301 generated during method execution if a control method attempts to declare
4304 Moved resource descriptor string constants that are used by both the AML
4305 disassembler and AML debugger to the common utilities directory so that
4306 these components are independent.
4308 Implemented support in the AcpiExec utility (-e switch) to globally ignore
4309 exceptions during control method execution (method is not aborted.)
4311 Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix
4314 Code and Data Size: The current and previous library sizes for the core
4315 subsystem are shown below. These are the code and data sizes for the
4316 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
4317 values do not include any ACPI driver or OSPM code. The debug version of the
4318 code includes the debug output trace mechanism and has a much larger code
4319 and data size. Note that these values will vary depending on the efficiency
4320 of the compiler and the compiler options used during generation.
4323 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
4324 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
4326 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
4327 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
4330 2) iASL Compiler/Disassembler:
4332 Fixed a problem where a CPU stack overflow fault could occur if a recursive
4333 method call was made from within a Return statement.
4335 ----------------------------------------
4336 02 December 2005. Summary of changes for version 20051202:
4338 1) ACPI CA Core Subsystem:
4340 Modified the parsing of control methods to no longer create namespace
4341 objects during the first pass of the parse. Objects are now created only
4342 during the execute phase, at the moment the namespace creation operator is
4343 encountered in the AML (Name, OperationRegion, CreateByteField, etc.) This
4344 should eliminate ALREADY_EXISTS exceptions seen on some machines where
4345 reentrant control methods are protected by an AML mutex. The mutex will now
4346 correctly block multiple threads from attempting to create the same object
4349 Increased the number of available Owner Ids for namespace object tracking
4350 from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen on
4351 some machines with a large number of ACPI tables (either static or dynamic).
4353 Fixed a problem with the AcpiExec utility where a fault could occur when the
4354 -b switch (batch mode) is used.
4356 Enhanced the namespace dump routine to output the owner ID for each
4359 Code and Data Size: The current and previous library sizes for the core
4360 subsystem are shown below. These are the code and data sizes for the
4361 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
4362 values do not include any ACPI driver or OSPM code. The debug version of the
4363 code includes the debug output trace mechanism and has a much larger code
4364 and data size. Note that these values will vary depending on the efficiency
4365 of the compiler and the compiler options used during generation.
4368 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
4369 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
4371 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
4372 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
4375 2) iASL Compiler/Disassembler:
4377 Fixed a parse error during compilation of certain Switch/Case constructs. To
4378 simplify the parse, the grammar now allows for multiple Default statements
4379 and this error is now detected and flagged during the analysis phase.
4381 Disassembler: The disassembly now includes the contents of the original
4382 table header within a comment at the start of the file. This includes the
4383 name and version of the original ASL compiler.
4385 ----------------------------------------
4386 17 November 2005. Summary of changes for version 20051117:
4388 1) ACPI CA Core Subsystem:
4390 Fixed a problem in the AML parser where the method thread count could be
4391 decremented below zero if any errors occurred during the method parse phase.
4392 This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some machines.
4393 This also fixed a related regression with the mechanism that detects and
4394 corrects methods that cannot properly handle reentrancy (related to the
4395 deployment of the new OwnerId mechanism.)
4397 Eliminated the pre-parsing of control methods (to detect errors) during
4398 table load. Related to the problem above, this was causing unwind issues if
4399 any errors occurred during the parse, and it seemed to be overkill. A table
4400 load should not be aborted if there are problems with any single control
4401 method, thus rendering this feature rather pointless.
4403 Fixed a problem with the new table-driven resource manager where an internal
4404 buffer overflow could occur for small resource templates.
4406 Implemented a new external interface, AcpiGetVendorResource. This interface
4407 will find and return a vendor-defined resource descriptor within a _CRS or
4408 _PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn Helgaas.
4410 Removed the length limit (200) on string objects as per the upcoming ACPI
4411 3.0A specification. This affects the following areas of the interpreter: 1)
4412 any implicit conversion of a Buffer to a String, 2) a String object result
4413 of the ASL Concatentate operator, 3) the String object result of the ASL
4416 Fixed a problem in the Windows OS interface layer (OSL) where a WAIT_FOREVER
4417 on a semaphore object would incorrectly timeout. This allows the
4418 multithreading features of the AcpiExec utility to work properly under
4421 Updated the Linux makefiles for the iASL compiler and AcpiExec to include
4422 the recently added file named "utresrc.c".
4424 Code and Data Size: The current and previous library sizes for the core
4425 subsystem are shown below. These are the code and data sizes for the
4426 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
4427 values do not include any ACPI driver or OSPM code. The debug version of the
4428 code includes the debug output trace mechanism and has a much larger code
4429 and data size. Note that these values will vary depending on the efficiency
4430 of the compiler and the compiler options used during generation.
4433 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
4434 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
4436 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
4437 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
4440 2) iASL Compiler/Disassembler:
4442 Removed the limit (200) on string objects as per the upcoming ACPI 3.0A
4443 specification. For the iASL compiler, this means that string literals within
4444 the source ASL can be of any length.
4446 Enhanced the listing output to dump the AML code for resource descriptors
4447 immediately after the ASL code for each descriptor, instead of in a block at
4448 the end of the entire resource template.
4450 Enhanced the compiler debug output to dump the entire original parse tree
4451 constructed during the parse phase, before any transforms are applied to the
4452 tree. The transformed tree is dumped also.
4454 ----------------------------------------
4455 02 November 2005. Summary of changes for version 20051102:
4457 1) ACPI CA Core Subsystem:
4459 Modified the subsystem initialization sequence to improve GPE support. The
4460 GPE initialization has been split into two parts in order to defer execution
4461 of the _PRW methods (Power Resources for Wake) until after the hardware is
4462 fully initialized and the SCI handler is installed. This allows the _PRW
4463 methods to access fields protected by the Global Lock. This will fix systems
4464 where a NO_GLOBAL_LOCK exception has been seen during initialization.
4466 Converted the ACPI internal object disassemble and display code within the
4467 AML debugger to fully table-driven operation, reducing code size and
4468 increasing maintainability.
4470 Fixed a regression with the ConcatenateResTemplate() ASL operator introduced
4471 in the 20051021 release.
4473 Implemented support for "local" internal ACPI object types within the
4474 debugger "Object" command and the AcpiWalkNamespace external interfaces.
4475 These local types include RegionFields, BankFields, IndexFields, Alias, and
4478 Moved common AML resource handling code into a new file, "utresrc.c". This
4479 code is shared by both the Resource Manager and the AML Debugger.
4481 Code and Data Size: The current and previous library sizes for the core
4482 subsystem are shown below. These are the code and data sizes for the
4483 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
4484 values do not include any ACPI driver or OSPM code. The debug version of the
4485 code includes the debug output trace mechanism and has a much larger code
4486 and data size. Note that these values will vary depending on the efficiency
4487 of the compiler and the compiler options used during generation.
4490 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
4491 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
4493 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
4494 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
4497 2) iASL Compiler/Disassembler:
4499 Fixed a problem with very large initializer lists (more than 4000 elements)
4500 for both Buffer and Package objects where the parse stack could overflow.
4502 Enhanced the pre-compile source code scan for non-ASCII characters to ignore
4503 characters within comment fields. The scan is now always performed and is no
4504 longer optional, detecting invalid characters within a source file
4505 immediately rather than during the parse phase or later.
4507 Enhanced the ASL grammar definition to force early reductions on all list-
4508 style grammar elements so that the overall parse stack usage is greatly
4509 reduced. This should improve performance and reduce the possibility of parse
4512 Eliminated all reduce/reduce conflicts in the iASL parser generation. Also,
4513 with the addition of a %expected statement, the compiler generates from
4514 source with no warnings.
4516 Fixed a possible segment fault in the disassembler if the input filename
4517 does not contain a "dot" extension (Thomas Renninger).
4519 ----------------------------------------
4520 21 October 2005. Summary of changes for version 20051021:
4522 1) ACPI CA Core Subsystem:
4524 Implemented support for the EM64T and other x86-64 processors. This
4525 essentially entails recognizing that these processors support non-aligned
4526 memory transfers. Previously, all 64-bit processors were assumed to lack
4527 hardware support for non-aligned transfers.
4529 Completed conversion of the Resource Manager to nearly full table-driven
4530 operation. Specifically, the resource conversion code (convert AML to
4531 internal format and the reverse) and the debug code to dump internal
4532 resource descriptors are fully table-driven, reducing code and data size and
4533 improving maintainability.
4535 The OSL interfaces for Acquire and Release Lock now use a 64-bit flag word
4536 on 64-bit processors instead of a fixed 32-bit word. (With assistance from
4537 Alexey Starikovskiy)
4539 Implemented support within the resource conversion code for the Type-
4540 Specific byte within the various ACPI 3.0 *WordSpace macros.
4542 Fixed some issues within the resource conversion code for the type-specific
4543 flags for both Memory and I/O address resource descriptors. For Memory,
4544 implemented support for the MTP and TTP flags. For I/O, split the TRS and
4545 TTP flags into two separate fields.
4547 Code and Data Size: The current and previous library sizes for the core
4548 subsystem are shown below. These are the code and data sizes for the
4549 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
4550 values do not include any ACPI driver or OSPM code. The debug version of the
4551 code includes the debug output trace mechanism and has a much larger code
4552 and data size. Note that these values will vary depending on the efficiency
4553 of the compiler and the compiler options used during generation.
4556 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
4557 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
4559 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
4560 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
4564 2) iASL Compiler/Disassembler:
4566 Relaxed a compiler restriction that disallowed a ResourceIndex byte if the
4567 corresponding ResourceSource string was not also present in a resource
4568 descriptor declaration. This restriction caused problems with existing
4569 AML/ASL code that includes the Index byte without the string. When such AML
4570 was disassembled, it could not be compiled without modification. Further,
4571 the modified code created a resource template with a different size than the
4572 original, breaking code that used fixed offsets into the resource template
4575 Removed a recent feature of the disassembler to ignore a lone ResourceIndex
4576 byte. This byte is now emitted if present so that the exact AML can be
4577 reproduced when the disassembled code is recompiled.
4579 Improved comments and text alignment for the resource descriptor code
4580 emitted by the disassembler.
4582 Implemented disassembler support for the ACPI 3.0 AccessSize field within a
4583 Register() resource descriptor.
4585 ----------------------------------------
4586 30 September 2005. Summary of changes for version 20050930:
4588 1) ACPI CA Core Subsystem:
4590 Completed a major overhaul of the Resource Manager code - specifically,
4591 optimizations in the area of the AML/internal resource conversion code. The
4592 code has been optimized to simplify and eliminate duplicated code, CPU stack
4593 use has been decreased by optimizing function parameters and local
4594 variables, and naming conventions across the manager have been standardized
4595 for clarity and ease of maintenance (this includes function, parameter,
4596 variable, and struct/typedef names.) The update may force changes in some
4597 driver code, depending on how resources are handled by the host OS.
4599 All Resource Manager dispatch and information tables have been moved to a
4600 single location for clarity and ease of maintenance. One new file was
4601 created, named "rsinfo.c".
4603 The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to
4604 guarantee that the argument is not evaluated twice, making them less prone
4605 to macro side-effects. However, since there exists the possibility of
4606 additional stack use if a particular compiler cannot optimize them (such as
4607 in the debug generation case), the original macros are optionally available.
4608 Note that some invocations of the return_VALUE macro may now cause size
4609 mismatch warnings; the return_UINT8 and return_UINT32 macros are provided to
4610 eliminate these. (From Randy Dunlap)
4612 Implemented a new mechanism to enable debug tracing for individual control
4613 methods. A new external interface, AcpiDebugTrace, is provided to enable
4614 this mechanism. The intent is to allow the host OS to easily enable and
4615 disable tracing for problematic control methods. This interface can be
4616 easily exposed to a user or debugger interface if desired. See the file
4617 psxface.c for details.
4619 AcpiUtCallocate will now return a valid pointer if a length of zero is
4620 specified - a length of one is used and a warning is issued. This matches
4621 the behavior of AcpiUtAllocate.
4623 Code and Data Size: The current and previous library sizes for the core
4624 subsystem are shown below. These are the code and data sizes for the
4625 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
4626 values do not include any ACPI driver or OSPM code. The debug version of the
4627 code includes the debug output trace mechanism and has a much larger code
4628 and data size. Note that these values will vary depending on the efficiency
4629 of the compiler and the compiler options used during generation.
4632 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
4633 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
4635 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
4636 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
4639 2) iASL Compiler/Disassembler:
4641 A remark is issued if the effective compile-time length of a package or
4642 buffer is zero. Previously, this was a warning.
4644 ----------------------------------------
4645 16 September 2005. Summary of changes for version 20050916:
4647 1) ACPI CA Core Subsystem:
4649 Fixed a problem within the Resource Manager where support for the Generic
4650 Register descriptor was not fully implemented. This descriptor is now fully
4651 recognized, parsed, disassembled, and displayed.
4653 Completely restructured the Resource Manager code to utilize table-driven
4654 dispatch and lookup, eliminating many of the large switch() statements. This
4655 reduces overall subsystem code size and code complexity. Affects the
4656 resource parsing and construction, disassembly, and debug dump output.
4658 Cleaned up and restructured the debug dump output for all resource
4659 descriptors. Improved readability of the output and reduced code size.
4661 Fixed a problem where changes to internal data structures caused the
4662 optional ACPI_MUTEX_DEBUG code to fail compilation if specified.
4664 Code and Data Size: The current and previous library sizes for the core
4665 subsystem are shown below. These are the code and data sizes for the
4666 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
4667 values do not include any ACPI driver or OSPM code. The debug version of the
4668 code includes the debug output trace mechanism and has a much larger code
4669 and data size. Note that these values will vary depending on the efficiency
4670 of the compiler and the compiler options used during generation.
4673 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
4674 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
4676 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
4677 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
4680 2) iASL Compiler/Disassembler:
4682 Updated the disassembler to automatically insert an EndDependentFn() macro
4683 into the ASL stream if this macro is missing in the original AML code,
4684 simplifying compilation of the resulting ASL module.
4686 Fixed a problem in the disassembler where a disassembled ResourceSource
4687 string (within a large resource descriptor) was not surrounded by quotes and
4688 not followed by a comma, causing errors when the resulting ASL module was
4689 compiled. Also, escape sequences within a ResourceSource string are now
4690 handled correctly (especially "\\")
4692 ----------------------------------------
4693 02 September 2005. Summary of changes for version 20050902:
4695 1) ACPI CA Core Subsystem:
4697 Fixed a problem with the internal Owner ID allocation and deallocation
4698 mechanisms for control method execution and recursive method invocation.
4699 This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId"
4700 messages seen on some systems. Recursive method invocation depth is
4701 currently limited to 255. (Alexey Starikovskiy)
4703 Completely eliminated all vestiges of support for the "module-level
4704 executable code" until this support is fully implemented and debugged. This
4705 should eliminate the NO_RETURN_VALUE exceptions seen during table load on
4706 some systems that invoke this support.
4708 Fixed a problem within the resource manager code where the transaction flags
4709 for a 64-bit address descriptor were handled incorrectly in the type-
4712 Consolidated duplicate code within the address descriptor resource manager
4713 code, reducing overall subsystem code size.
4715 Fixed a fault when using the AML debugger "disassemble" command to
4716 disassemble individual control methods.
4718 Removed references to the "release_current" directory within the Unix
4721 Code and Data Size: The current and previous core subsystem library sizes
4722 are shown below. These are the code and data sizes for the acpica.lib
4723 produced by the Microsoft Visual C++ 6.0 compiler. These values do not
4724 include any ACPI driver or OSPM code. The debug version of the code includes
4725 the debug output trace mechanism and has a much larger code and data size.
4726 Note that these values will vary depending on the efficiency of the compiler
4727 and the compiler options used during generation.
4730 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
4731 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
4733 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
4734 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
4737 2) iASL Compiler/Disassembler:
4739 Implemented an error check for illegal duplicate values in the interrupt and
4740 dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and
4743 Implemented error checking for the Irq() and IrqNoFlags() macros to detect
4744 too many values in the interrupt list (16 max) and invalid values in the
4747 The maximum length string literal within an ASL file is now restricted to
4748 200 characters as per the ACPI specification.
4750 Fixed a fault when using the -ln option (generate namespace listing).
4752 Implemented an error check to determine if a DescriptorName within a
4753 resource descriptor has already been used within the current scope.
4755 ----------------------------------------
4756 15 August 2005. Summary of changes for version 20050815:
4758 1) ACPI CA Core Subsystem:
4760 Implemented a full bytewise compare to determine if a table load request is
4761 attempting to load a duplicate table. The compare is performed if the table
4762 signatures and table lengths match. This will allow different tables with
4763 the same OEM Table ID and revision to be loaded - probably against the ACPI
4764 specification, but discovered in the field nonetheless.
4766 Added the changes.txt logfile to each of the zipped release packages.
4768 Code and Data Size: Current and previous core subsystem library sizes are
4769 shown below. These are the code and data sizes for the acpica.lib produced
4770 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
4771 any ACPI driver or OSPM code. The debug version of the code includes the
4772 debug output trace mechanism and has a much larger code and data size. Note
4773 that these values will vary depending on the efficiency of the compiler and
4774 the compiler options used during generation.
4777 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
4778 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
4780 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
4781 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
4784 2) iASL Compiler/Disassembler:
4786 Fixed a problem where incorrect AML code could be generated for Package
4787 objects if optimization is disabled (via the -oa switch).
4789 Fixed a problem with where incorrect AML code is generated for variable-
4790 length packages when the package length is not specified and the number of
4791 initializer values is greater than 255.
4794 ----------------------------------------
4795 29 July 2005. Summary of changes for version 20050729:
4797 1) ACPI CA Core Subsystem:
4799 Implemented support to ignore an attempt to install/load a particular ACPI
4800 table more than once. Apparently there exists BIOS code that repeatedly
4801 attempts to load the same SSDT upon certain events. With assistance from
4802 Venkatesh Pallipadi.
4804 Restructured the main interface to the AML parser in order to correctly
4805 handle all exceptional conditions. This will prevent leakage of the OwnerId
4806 resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on some
4807 machines. With assistance from Alexey Starikovskiy.
4809 Support for "module level code" has been disabled in this version due to a
4810 number of issues that have appeared on various machines. The support can be
4811 enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem
4812 compilation. When the issues are fully resolved, the code will be enabled by
4815 Modified the internal functions for debug print support to define the
4816 FunctionName parameter as a (const char *) for compatibility with compiler
4817 built-in macros such as __FUNCTION__, etc.
4819 Linted the entire ACPICA source tree for both 32-bit and 64-bit.
4821 Implemented support to display an object count summary for the AML Debugger
4822 commands Object and Methods.
4824 Code and Data Size: Current and previous core subsystem library sizes are
4825 shown below. These are the code and data sizes for the acpica.lib produced
4826 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
4827 any ACPI driver or OSPM code. The debug version of the code includes the
4828 debug output trace mechanism and has a much larger code and data size. Note
4829 that these values will vary depending on the efficiency of the compiler and
4830 the compiler options used during generation.
4833 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
4834 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
4836 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
4837 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
4840 2) iASL Compiler/Disassembler:
4842 Fixed a regression that appeared in the 20050708 version of the compiler
4843 where an error message was inadvertently emitted for invocations of the _OSI
4844 reserved control method.
4846 ----------------------------------------
4847 08 July 2005. Summary of changes for version 20050708:
4849 1) ACPI CA Core Subsystem:
4851 The use of the CPU stack in the debug version of the subsystem has been
4852 considerably reduced. Previously, a debug structure was declared in every
4853 function that used the debug macros. This structure has been removed in
4854 favor of declaring the individual elements as parameters to the debug
4855 functions. This reduces the cumulative stack use during nested execution of
4856 ACPI function calls at the cost of a small increase in the code size of the
4857 debug version of the subsystem. With assistance from Alexey Starikovskiy and
4860 Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent
4861 headers to define a macro that will return the current function name at
4862 runtime (such as __FUNCTION__ or _func_, etc.) The function name is used by
4863 the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the
4864 compiler-dependent header, the function name is saved on the CPU stack (one
4865 pointer per function.) This mechanism is used because apparently there
4866 exists no standard ANSI-C defined macro that that returns the function name.
4868 Redesigned and reimplemented the "Owner ID" mechanism used to track
4869 namespace objects created/deleted by ACPI tables and control method
4870 execution. A bitmap is now used to allocate and free the IDs, thus solving
4871 the wraparound problem present in the previous implementation. The size of
4872 the namespace node descriptor was reduced by 2 bytes as a result (Alexey
4875 Removed the UINT32_BIT and UINT16_BIT types that were used for the bitfield
4876 flag definitions within the headers for the predefined ACPI tables. These
4877 have been replaced by UINT8_BIT in order to increase the code portability of
4878 the subsystem. If the use of UINT8 remains a problem, we may be forced to
4879 eliminate bitfields entirely because of a lack of portability.
4881 Enhanced the performance of the AcpiUtUpdateObjectReference procedure. This
4882 is a frequently used function and this improvement increases the performance
4883 of the entire subsystem (Alexey Starikovskiy).
4885 Fixed several possible memory leaks and the inverse - premature object
4886 deletion (Alexey Starikovskiy).
4888 Code and Data Size: Current and previous core subsystem library sizes are
4889 shown below. These are the code and data sizes for the acpica.lib produced
4890 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
4891 any ACPI driver or OSPM code. The debug version of the code includes the
4892 debug output trace mechanism and has a much larger code and data size. Note
4893 that these values will vary depending on the efficiency of the compiler and
4894 the compiler options used during generation.
4897 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
4898 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
4900 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
4901 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
4903 ----------------------------------------
4904 24 June 2005. Summary of changes for version 20050624:
4906 1) ACPI CA Core Subsystem:
4908 Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for
4909 the host-defined cache object. This allows the OSL implementation to define
4910 and type this object in any manner desired, simplifying the OSL
4911 implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for
4912 Linux, and should be defined in the OS-specific header file for other
4913 operating systems as required.
4915 Changed the interface to AcpiOsAcquireObject to directly return the
4916 requested object as the function return (instead of ACPI_STATUS.) This
4917 change was made for performance reasons, since this is the purpose of the
4918 interface in the first place. AcpiOsAcquireObject is now similar to the
4919 AcpiOsAllocate interface.
4921 Implemented a new AML debugger command named Businfo. This command displays
4922 information about all devices that have an associate _PRT object. The _ADR,
4923 _HID, _UID, and _CID are displayed for these devices.
4925 Modified the initialization sequence in AcpiInitializeSubsystem to call the
4926 OSL interface AcpiOslInitialize first, before any local initialization. This
4927 change was required because the global initialization now calls OSL
4930 Enhanced the Dump command to display the entire contents of Package objects
4931 (including all sub-objects and their values.)
4933 Restructured the code base to split some files because of size and/or
4934 because the code logically belonged in a separate file. New files are listed
4935 below. All makefiles and project files included in the ACPI CA release have
4937 utilities/utcache.c /* Local cache interfaces */
4938 utilities/utmutex.c /* Local mutex support */
4939 utilities/utstate.c /* State object support */
4940 interpreter/parser/psloop.c /* Main AML parse loop */
4942 Code and Data Size: Current and previous core subsystem library sizes are
4943 shown below. These are the code and data sizes for the acpica.lib produced
4944 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
4945 any ACPI driver or OSPM code. The debug version of the code includes the
4946 debug output trace mechanism and has a much larger code and data size. Note
4947 that these values will vary depending on the efficiency of the compiler and
4948 the compiler options used during generation.
4951 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
4952 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
4954 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
4955 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
4958 2) iASL Compiler/Disassembler:
4960 Fixed a regression introduced in version 20050513 where the use of a Package
4961 object within a Case() statement caused a compile time exception. The
4962 original behavior has been restored (a Match() operator is emitted.)
4964 ----------------------------------------
4965 17 June 2005. Summary of changes for version 20050617:
4967 1) ACPI CA Core Subsystem:
4969 Moved the object cache operations into the OS interface layer (OSL) to allow
4970 the host OS to handle these operations if desired (for example, the Linux
4971 OSL will invoke the slab allocator). This support is optional; the compile
4972 time define ACPI_USE_LOCAL_CACHE may be used to utilize the original cache
4973 code in the ACPI CA core. The new OSL interfaces are shown below. See
4974 utalloc.c for an example implementation, and acpiosxf.h for the exact
4975 interface definitions. With assistance from Alexey Starikovskiy.
4982 Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to return
4983 and restore a flags parameter. This fits better with many OS lock models.
4984 Note: the current execution state (interrupt handler or not) is no longer
4985 passed to these interfaces. If necessary, the OSL must determine this state
4986 by itself, a simple and fast operation. With assistance from Alexey
4989 Fixed a problem in the ACPI table handling where a valid XSDT was assumed
4990 present if the revision of the RSDP was 2 or greater. According to the ACPI
4991 specification, the XSDT is optional in all cases, and the table manager
4992 therefore now checks for both an RSDP >=2 and a valid XSDT pointer.
4993 Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs contain
4996 Fixed an interpreter problem with the Mid() operator in the case of an input
4997 string where the resulting output string is of zero length. It now correctly
4998 returns a valid, null terminated string object instead of a string object
4999 with a null pointer.
5001 Fixed a problem with the control method argument handling to allow a store
5002 to an Arg object that already contains an object of type Device. The Device
5003 object is now correctly overwritten. Previously, an error was returned.
5006 Enhanced the debugger Find command to emit object values in addition to the
5007 found object pathnames. The output format is the same as the dump namespace
5010 Enhanced the debugger Set command. It now has the ability to set the value
5011 of any Named integer object in the namespace (Previously, only method locals
5012 and args could be set.)
5014 Code and Data Size: Current and previous core subsystem library sizes are
5015 shown below. These are the code and data sizes for the acpica.lib produced
5016 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5017 any ACPI driver or OSPM code. The debug version of the code includes the
5018 debug output trace mechanism and has a much larger code and data size. Note
5019 that these values will vary depending on the efficiency of the compiler and
5020 the compiler options used during generation.
5023 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
5024 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
5026 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
5027 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
5030 2) iASL Compiler/Disassembler:
5032 Fixed a regression in the disassembler where if/else/while constructs were
5033 output incorrectly. This problem was introduced in the previous release
5034 (20050526). This problem also affected the single-step disassembly in the
5037 Fixed a problem where compiling the reserved _OSI method would randomly (but
5038 rarely) produce compile errors.
5040 Enhanced the disassembler to emit compilable code in the face of incorrect
5041 AML resource descriptors. If the optional ResourceSourceIndex is present,
5042 but the ResourceSource is not, do not emit the ResourceSourceIndex in the
5043 disassembly. Otherwise, the resulting code cannot be compiled without
5046 ----------------------------------------
5047 26 May 2005. Summary of changes for version 20050526:
5049 1) ACPI CA Core Subsystem:
5051 Implemented support to execute Type 1 and Type 2 AML opcodes appearing at
5052 the module level (not within a control method.) These opcodes are executed
5053 exactly once at the time the table is loaded. This type of code was legal up
5054 until the release of ACPI 2.0B (2002) and is now supported within ACPI CA in
5055 order to provide backwards compatibility with earlier BIOS implementations.
5056 This eliminates the "Encountered executable code at module level" warning
5057 that was previously generated upon detection of such code.
5059 Fixed a problem in the interpreter where an AE_NOT_FOUND exception could
5060 inadvertently be generated during the lookup of namespace objects in the
5061 second pass parse of ACPI tables and control methods. It appears that this
5062 problem could occur during the resolution of forward references to namespace
5065 Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function,
5066 corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This
5067 allows the deadlock detection debug code to be compiled out in the normal
5068 case, improving mutex performance (and overall subsystem performance)
5071 Implemented a handful of miscellaneous fixes for possible memory leaks on
5072 error conditions and error handling control paths. These fixes were
5073 suggested by FreeBSD and the Coverity Prevent source code analysis tool.
5075 Added a check for a null RSDT pointer in AcpiGetFirmwareTable (tbxfroot.c)
5076 to prevent a fault in this error case.
5078 Code and Data Size: Current and previous core subsystem library sizes are
5079 shown below. These are the code and data sizes for the acpica.lib produced
5080 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5081 any ACPI driver or OSPM code. The debug version of the code includes the
5082 debug output trace mechanism and has a much larger code and data size. Note
5083 that these values will vary depending on the efficiency of the compiler and
5084 the compiler options used during generation.
5087 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
5088 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
5090 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
5091 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
5094 2) iASL Compiler/Disassembler:
5096 Implemented support to allow Type 1 and Type 2 ASL operators to appear at
5097 the module level (not within a control method.) These operators will be
5098 executed once at the time the table is loaded. This type of code was legal
5099 up until the release of ACPI 2.0B (2002) and is now supported by the iASL
5100 compiler in order to provide backwards compatibility with earlier BIOS ASL
5103 The ACPI integer width (specified via the table revision ID or the -r
5104 override, 32 or 64 bits) is now used internally during compile-time constant
5105 folding to ensure that constants are truncated to 32 bits if necessary.
5106 Previously, the revision ID value was only emitted in the AML table header.
5108 An error message is now generated for the Mutex and Method operators if the
5109 SyncLevel parameter is outside the legal range of 0 through 15.
5111 Fixed a problem with the Method operator ParameterTypes list handling (ACPI
5112 3.0). Previously, more than 2 types or 2 arguments generated a syntax error.
5113 The actual underlying implementation of method argument typechecking is
5114 still under development, however.
5116 ----------------------------------------
5117 13 May 2005. Summary of changes for version 20050513:
5119 1) ACPI CA Core Subsystem:
5121 Implemented support for PCI Express root bridges -- added support for device
5122 PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup.
5124 The interpreter now automatically truncates incoming 64-bit constants to 32
5125 bits if currently executing out of a 32-bit ACPI table (Revision < 2). This
5126 also affects the iASL compiler constant folding. (Note: as per below, the
5127 iASL compiler no longer allows 64-bit constants within 32-bit tables.)
5129 Fixed a problem where string and buffer objects with "static" pointers
5130 (pointers to initialization data within an ACPI table) were not handled
5131 consistently. The internal object copy operation now always copies the data
5132 to a newly allocated buffer, regardless of whether the source object is
5135 Fixed a problem with the FromBCD operator where an implicit result
5136 conversion was improperly performed while storing the result to the target
5137 operand. Since this is an "explicit conversion" operator, the implicit
5138 conversion should never be performed on the output.
5140 Fixed a problem with the CopyObject operator where a copy to an existing
5141 named object did not always completely overwrite the existing object stored
5142 at name. Specifically, a buffer-to-buffer copy did not delete the existing
5145 Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces and
5146 structs for consistency.
5148 Code and Data Size: Current and previous core subsystem library sizes are
5149 shown below. These are the code and data sizes for the acpica.lib produced
5150 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5151 any ACPI driver or OSPM code. The debug version of the code includes the
5152 debug output trace mechanism and has a much larger code and data size. Note
5153 that these values will vary depending on the efficiency of the compiler and
5154 the compiler options used during generation.
5157 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
5158 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
5159 Current Release: (Same sizes)
5160 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
5161 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
5164 2) iASL Compiler/Disassembler:
5166 The compiler now emits a warning if an attempt is made to generate a 64-bit
5167 integer constant from within a 32-bit ACPI table (Revision < 2). The integer
5168 is truncated to 32 bits.
5170 Fixed a problem with large package objects: if the static length of the
5171 package is greater than 255, the "variable length package" opcode is
5172 emitted. Previously, this caused an error. This requires an update to the
5173 ACPI spec, since it currently (incorrectly) states that packages larger than
5174 255 elements are not allowed.
5176 The disassembler now correctly handles variable length packages and packages
5177 larger than 255 elements.
5179 ----------------------------------------
5180 08 April 2005. Summary of changes for version 20050408:
5182 1) ACPI CA Core Subsystem:
5184 Fixed three cases in the interpreter where an "index" argument to an ASL
5185 function was still (internally) 32 bits instead of the required 64 bits.
5186 This was the Index argument to the Index, Mid, and Match operators.
5188 The "strupr" function is now permanently local (AcpiUtStrupr), since this is
5189 not a POSIX-defined function and not present in most kernel-level C
5190 libraries. All references to the C library strupr function have been removed
5193 Completed the deployment of static functions/prototypes. All prototypes with
5194 the static attribute have been moved from the headers to the owning C file.
5196 Implemented an extract option (-e) for the AcpiBin utility (AML binary
5197 utility). This option allows the utility to extract individual ACPI tables
5198 from the output of AcpiDmp. It provides the same functionality of the
5199 acpixtract.pl perl script without the worry of setting the correct perl
5200 options. AcpiBin runs on Windows and has not yet been generated/validated in
5201 the Linux/Unix environment (but should be soon).
5203 Updated and fixed the table dump option for AcpiBin (-d). This option
5204 converts a single ACPI table to a hex/ascii file, similar to the output of
5207 Code and Data Size: Current and previous core subsystem library sizes are
5208 shown below. These are the code and data sizes for the acpica.lib produced
5209 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5210 any ACPI driver or OSPM code. The debug version of the code includes the
5211 debug output trace mechanism and has a much larger code and data size. Note
5212 that these values will vary depending on the efficiency of the compiler and
5213 the compiler options used during generation.
5216 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
5217 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
5219 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
5220 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
5223 2) iASL Compiler/Disassembler:
5225 Disassembler fix: Added a check to ensure that the table length found in the
5226 ACPI table header within the input file is not longer than the actual input
5227 file size. This indicates some kind of file or table corruption.
5229 ----------------------------------------
5230 29 March 2005. Summary of changes for version 20050329:
5232 1) ACPI CA Core Subsystem:
5234 An error is now generated if an attempt is made to create a Buffer Field of
5235 length zero (A CreateField with a length operand of zero.)
5237 The interpreter now issues a warning whenever executable code at the module
5238 level is detected during ACPI table load. This will give some idea of the
5239 prevalence of this type of code.
5241 Implemented support for references to named objects (other than control
5242 methods) within package objects.
5244 Enhanced package object output for the debug object. Package objects are now
5245 completely dumped, showing all elements.
5247 Enhanced miscellaneous object output for the debug object. Any object can
5248 now be written to the debug object (for example, a device object can be
5249 written, and the type of the object will be displayed.)
5251 The "static" qualifier has been added to all local functions across both the
5252 core subsystem and the iASL compiler.
5254 The number of "long" lines (> 80 chars) within the source has been
5255 significantly reduced, by about 1/3.
5257 Cleaned up all header files to ensure that all CA/iASL functions are
5258 prototyped (even static functions) and the formatting is consistent.
5260 Two new header files have been added, acopcode.h and acnames.h.
5262 Removed several obsolete functions that were no longer used.
5264 Code and Data Size: Current and previous core subsystem library sizes are
5265 shown below. These are the code and data sizes for the acpica.lib produced
5266 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5267 any ACPI driver or OSPM code. The debug version of the code includes the
5268 debug output trace mechanism and has a much larger code and data size. Note
5269 that these values will vary depending on the efficiency of the compiler and
5270 the compiler options used during generation.
5273 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
5274 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
5276 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
5277 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
5281 2) iASL Compiler/Disassembler:
5283 Fixed a problem with the resource descriptor generation/support. For the
5284 ResourceSourceIndex and the ResourceSource fields, both must be present, or
5285 both must be not present - can't have one without the other.
5287 The compiler now returns non-zero from the main procedure if any errors have
5288 occurred during the compilation.
5291 ----------------------------------------
5292 09 March 2005. Summary of changes for version 20050309:
5294 1) ACPI CA Core Subsystem:
5296 The string-to-buffer implicit conversion code has been modified again after
5297 a change to the ACPI specification. In order to match the behavior of the
5298 other major ACPI implementation, the target buffer is no longer truncated if
5299 the source string is smaller than an existing target buffer. This change
5300 requires an update to the ACPI spec, and should eliminate the recent
5301 AE_AML_BUFFER_LIMIT issues.
5303 The "implicit return" support was rewritten to a new algorithm that solves
5304 the general case. Rather than attempt to determine when a method is about to
5305 exit, the result of every ASL operator is saved momentarily until the very
5306 next ASL operator is executed. Therefore, no matter how the method exits,
5307 there will always be a saved implicit return value. This feature is only
5308 enabled with the AcpiGbl_EnableInterpreterSlack flag, and should eliminate
5309 AE_AML_NO_RETURN_VALUE errors when enabled.
5311 Implemented implicit conversion support for the predicate (operand) of the
5312 If, Else, and While operators. String and Buffer arguments are automatically
5313 converted to Integers.
5315 Changed the string-to-integer conversion behavior to match the new ACPI
5316 errata: "If no integer object exists, a new integer is created. The ASCII
5317 string is interpreted as a hexadecimal constant. Each string character is
5318 interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting
5319 with the first character as the most significant digit, and ending with the
5320 first non-hexadecimal character or end-of-string." This means that the first
5321 non-hex character terminates the conversion and this is the code that was
5324 Fixed a problem where the ObjectType operator would fail (fault) when used
5325 on an Index of a Package which pointed to a null package element. The
5326 operator now properly returns zero (Uninitialized) in this case.
5328 Fixed a problem where the While operator used excessive memory by not
5329 properly popping the result stack during execution. There was no memory leak
5330 after execution, however. (Code provided by Valery Podrezov.)
5332 Fixed a problem where references to control methods within Package objects
5333 caused the method to be invoked, instead of producing a reference object
5334 pointing to the method.
5336 Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) to
5337 improve performance and reduce code size. (Code provided by Alexey
5340 Code and Data Size: Current and previous core subsystem library sizes are
5341 shown below. These are the code and data sizes for the acpica.lib produced
5342 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5343 any ACPI driver or OSPM code. The debug version of the code includes the
5344 debug output trace mechanism and has a much larger code and data size. Note
5345 that these values will vary depending on the efficiency of the compiler and
5346 the compiler options used during generation.
5349 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
5350 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
5352 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
5353 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
5356 2) iASL Compiler/Disassembler:
5358 Fixed a problem with the Return operator with no arguments. Since the AML
5359 grammar for the byte encoding requires an operand for the Return opcode, the
5360 compiler now emits a Return(Zero) for this case. An ACPI specification
5361 update has been written for this case.
5363 For tables other than the DSDT, namepath optimization is automatically
5364 disabled. This is because SSDTs can be loaded anywhere in the namespace, the
5365 compiler has no knowledge of where, and thus cannot optimize namepaths.
5367 Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was
5368 inadvertently omitted from the ACPI specification, and will require an
5371 The source file scan for ASCII characters is now optional (-a). This change
5372 was made because some vendors place non-ascii characters within comments.
5373 However, the scan is simply a brute-force byte compare to ensure all
5374 characters in the file are in the range 0x00 to 0x7F.
5376 Fixed a problem with the CondRefOf operator where the compiler was
5377 inappropriately checking for the existence of the target. Since the point of
5378 the operator is to check for the existence of the target at run-time, the
5379 compiler no longer checks for the target existence.
5381 Fixed a problem where errors generated from the internal AML interpreter
5382 during constant folding were not handled properly, causing a fault.
5384 Fixed a problem with overly aggressive range checking for the Stall
5385 operator. The valid range (max 255) is now only checked if the operand is of
5386 type Integer. All other operand types cannot be statically checked.
5388 Fixed a problem where control method references within the RefOf, DeRefOf,
5389 and ObjectType operators were not treated properly. They are now treated as
5390 actual references, not method invocations.
5392 Fixed and enhanced the "list namespace" option (-ln). This option was broken
5393 a number of releases ago.
5395 Improved error handling for the Field, IndexField, and BankField operators.
5396 The compiler now cleanly reports and recovers from errors in the field
5397 component (FieldUnit) list.
5399 Fixed a disassembler problem where the optional ResourceDescriptor fields
5400 TRS and TTP were not always handled correctly.
5402 Disassembler - Comments in output now use "//" instead of "/*"
5404 ----------------------------------------
5405 28 February 2005. Summary of changes for version 20050228:
5407 1) ACPI CA Core Subsystem:
5409 Fixed a problem where the result of an Index() operator (an object
5410 reference) must increment the reference count on the target object for the
5411 life of the object reference.
5413 Implemented AML Interpreter and Debugger support for the new ACPI 3.0
5414 Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and WordSpace
5415 resource descriptors.
5417 Implemented support in the _OSI method for the ACPI 3.0 "Extended Address
5418 Space Descriptor" string, indicating interpreter support for the descriptors
5421 Implemented header support for the new ACPI 3.0 FADT flag bits.
5423 Implemented header support for the new ACPI 3.0 PCI Express bits for the PM1
5424 status/enable registers.
5426 Updated header support for the MADT processor local Apic struct and MADT
5427 platform interrupt source struct for new ACPI 3.0 fields.
5429 Implemented header support for the SRAT and SLIT ACPI tables.
5431 Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" flag
5434 Code and Data Size: Current and previous core subsystem library sizes are
5435 shown below. These are the code and data sizes for the acpica.lib produced
5436 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5437 any ACPI driver or OSPM code. The debug version of the code includes the
5438 debug output trace mechanism and has a much larger code and data size. Note
5439 that these values will vary depending on the efficiency of the compiler and
5440 the compiler options used during generation.
5443 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
5444 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
5446 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
5447 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
5450 2) iASL Compiler/Disassembler:
5452 Fixed a problem with the internal 64-bit String-to-integer conversion with
5453 strings less than two characters long.
5455 Fixed a problem with constant folding where the result of the Index()
5456 operator can not be considered a constant. This means that Index() cannot be
5457 a type3 opcode and this will require an update to the ACPI specification.
5459 Disassembler: Implemented support for the TTP, MTP, and TRS resource
5460 descriptor fields. These fields were inadvertently ignored and not output in
5461 the disassembly of the resource descriptor.
5464 ----------------------------------------
5465 11 February 2005. Summary of changes for version 20050211:
5467 1) ACPI CA Core Subsystem:
5469 Implemented ACPI 3.0 support for implicit conversion within the Match()
5470 operator. MatchObjects can now be of type integer, buffer, or string instead
5471 of just type integer. Package elements are implicitly converted to the type
5472 of the MatchObject. This change aligns the behavior of Match() with the
5473 behavior of the other logical operators (LLess(), etc.) It also requires an
5474 errata change to the ACPI specification as this support was intended for
5475 ACPI 3.0, but was inadvertently omitted.
5477 Fixed a problem with the internal implicit "to buffer" conversion. Strings
5478 that are converted to buffers will cause buffer truncation if the string is
5479 smaller than the target buffer. Integers that are converted to buffers will
5480 not cause buffer truncation, only zero extension (both as per the ACPI
5481 spec.) The problem was introduced when code was added to truncate the
5482 buffer, but this should not be performed in all cases, only the string case.
5484 Fixed a problem with the Buffer and Package operators where the interpreter
5485 would get confused if two such operators were used as operands to an ASL
5486 operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result
5487 stack was not being popped after the execution of these operators, resulting
5488 in an AE_NO_RETURN_VALUE exception.
5490 Fixed a problem with constructs of the form Store(Index(...),...). The
5491 reference object returned from Index was inadvertently resolved to an actual
5492 value. This problem was introduced in version 20050114 when the behavior of
5493 Store() was modified to restrict the object types that can be used as the
5494 source operand (to match the ACPI specification.)
5496 Reduced excessive stack use within the AcpiGetObjectInfo procedure.
5498 Added a fix to aclinux.h to allow generation of AcpiExec on Linux.
5500 Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct.
5502 Code and Data Size: Current and previous core subsystem library sizes are
5503 shown below. These are the code and data sizes for the acpica.lib produced
5504 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5505 any ACPI driver or OSPM code. The debug version of the code includes the
5506 debug output trace mechanism and has a much larger code and data size. Note
5507 that these values will vary depending on the efficiency of the compiler and
5508 the compiler options used during generation.
5511 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
5512 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
5514 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
5515 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
5518 2) iASL Compiler/Disassembler:
5520 Fixed a code generation problem in the constant folding optimization code
5521 where incorrect code was generated if a constant was reduced to a buffer
5522 object (i.e., a reduced type 5 opcode.)
5524 Fixed a typechecking problem for the ToBuffer operator. Caused by an
5525 incorrect return type in the internal opcode information table.
5527 ----------------------------------------
5528 25 January 2005. Summary of changes for version 20050125:
5530 1) ACPI CA Core Subsystem:
5532 Fixed a recently introduced problem with the Global Lock where the
5533 underlying semaphore was not created. This problem was introduced in
5534 version 20050114, and caused an AE_AML_NO_OPERAND exception during an
5535 Acquire() operation on _GL.
5537 The local object cache is now optional, and is disabled by default. Both
5538 AcpiExec and the iASL compiler enable the cache because they run in user
5539 mode and this enhances their performance. #define ACPI_ENABLE_OBJECT_CACHE
5540 to enable the local cache.
5542 Fixed an issue in the internal function AcpiUtEvaluateObject concerning the
5543 optional "implicit return" support where an error was returned if no return
5544 object was expected, but one was implicitly returned. AE_OK is now returned
5545 in this case and the implicitly returned object is deleted.
5546 AcpiUtEvaluateObject is only occasionally used, and only to execute reserved
5547 methods such as _STA and _INI where the return type is known up front.
5549 Fixed a few issues with the internal convert-to-integer code. It now returns
5550 an error if an attempt is made to convert a null string, a string of only
5551 blanks/tabs, or a zero-length buffer. This affects both implicit conversion
5552 and explicit conversion via the ToInteger() operator.
5554 The internal debug code in AcpiUtAcquireMutex has been commented out. It is
5555 not needed for normal operation and should increase the performance of the
5556 entire subsystem. The code remains in case it is needed for debug purposes
5559 The AcpiExec source and makefile are included in the Unix/Linux package for
5562 Code and Data Size: Current and previous core subsystem library sizes are
5563 shown below. These are the code and data sizes for the acpica.lib produced
5564 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5565 any ACPI driver or OSPM code. The debug version of the code includes the
5566 debug output trace mechanism and has a much larger code and data size. Note
5567 that these values will vary depending on the efficiency of the compiler and
5568 the compiler options used during generation.
5571 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
5572 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
5574 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
5575 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
5577 2) iASL Compiler/Disassembler:
5579 Switch/Case support: A warning is now issued if the type of the Switch value
5580 cannot be determined at compile time. For example, Switch(Arg0) will
5581 generate the warning, and the type is assumed to be an integer. As per the
5582 ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate the
5585 Switch/Case support: Implemented support for buffer and string objects as
5586 the switch value. This is an ACPI 3.0 feature, now that LEqual supports
5587 buffers and strings.
5589 Switch/Case support: The emitted code for the LEqual() comparisons now uses
5590 the switch value as the first operand, not the second. The case value is now
5591 the second operand, and this allows the case value to be implicitly
5592 converted to the type of the switch value, not the other way around.
5594 Switch/Case support: Temporary variables are now emitted immediately within
5595 the control method, not at the global level. This means that there are now
5596 36 temps available per-method, not 36 temps per-module as was the case with
5597 the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.)
5599 ----------------------------------------
5600 14 January 2005. Summary of changes for version 20050114:
5602 Added 2005 copyright to all module headers. This affects every module in
5603 the core subsystem, iASL compiler, and the utilities.
5605 1) ACPI CA Core Subsystem:
5607 Fixed an issue with the String-to-Buffer conversion code where the string
5608 null terminator was not included in the buffer after conversion, but there
5609 is existing ASL that assumes the string null terminator is included. This is
5610 the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was
5611 introduced in the previous version when the code was updated to correctly
5612 set the converted buffer size as per the ACPI specification. The ACPI spec
5613 is ambiguous and will be updated to specify that the null terminator must be
5614 included in the converted buffer. This also affects the ToBuffer() ASL
5617 Fixed a problem with the Mid() ASL/AML operator where it did not work
5618 correctly on Buffer objects. Newly created sub-buffers were not being marked
5622 Fixed a problem in AcpiTbFindTable where incorrect string compares were
5623 performed on the OemId and OemTableId table header fields. These fields are
5624 not null terminated, so strncmp is now used instead of strcmp.
5626 Implemented a restriction on the Store() ASL/AML operator to align the
5627 behavior with the ACPI specification. Previously, any object could be used
5628 as the source operand. Now, the only objects that may be used are Integers,
5629 Buffers, Strings, Packages, Object References, and DDB Handles. If
5630 necessary, the original behavior can be restored by enabling the
5631 EnableInterpreterSlack flag.
5633 Enhanced the optional "implicit return" support to allow an implicit return
5634 value from methods that are invoked externally via the AcpiEvaluateObject
5635 interface. This enables implicit returns from the _STA and _INI methods,
5638 Changed the Revision() ASL/AML operator to return the current version of the
5639 AML interpreter, in the YYYYMMDD format. Previously, it incorrectly returned
5640 the supported ACPI version (This is the function of the _REV method).
5642 Updated the _REV predefined method to return the currently supported version
5645 Implemented batch mode option for the AcpiExec utility (-b).
5647 Code and Data Size: Current and previous core subsystem library sizes are
5648 shown below. These are the code and data sizes for the acpica.lib produced
5649 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5650 any ACPI driver or OSPM code. The debug version of the code includes the
5651 debug output trace mechanism and has a much larger code and data size. Note
5652 that these values will vary depending on the efficiency of the compiler and
5653 the compiler options used during generation.
5656 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
5657 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
5659 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
5660 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
5662 ----------------------------------------
5663 10 December 2004. Summary of changes for version 20041210:
5665 ACPI 3.0 support is nearing completion in both the iASL compiler and the
5666 ACPI CA core subsystem.
5668 1) ACPI CA Core Subsystem:
5670 Fixed a problem in the ToDecimalString operator where the resulting string
5671 length was incorrectly calculated. The length is now calculated exactly,
5672 eliminating incorrect AE_STRING_LIMIT exceptions.
5674 Fixed a problem in the ToHexString operator to allow a maximum 200 character
5675 string to be produced.
5677 Fixed a problem in the internal string-to-buffer and buffer-to-buffer copy
5678 routine where the length of the resulting buffer was not truncated to the
5679 new size (if the target buffer already existed).
5681 Code and Data Size: Current and previous core subsystem library sizes are
5682 shown below. These are the code and data sizes for the acpica.lib produced
5683 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5684 any ACPI driver or OSPM code. The debug version of the code includes the
5685 debug output trace mechanism and has a much larger code and data size. Note
5686 that these values will vary depending on the efficiency of the compiler and
5687 the compiler options used during generation.
5690 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
5691 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
5693 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
5694 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
5697 2) iASL Compiler/Disassembler:
5699 Implemented the new ACPI 3.0 resource template macros - DWordSpace,
5700 ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace.
5701 Includes support in the disassembler.
5703 Implemented support for the new (ACPI 3.0) parameter to the Register macro,
5706 Fixed a problem where the _HE resource name for the Interrupt macro was
5707 referencing bit 0 instead of bit 1.
5709 Implemented check for maximum 255 interrupts in the Interrupt macro.
5711 Fixed a problem with the predefined resource descriptor names where
5712 incorrect AML code was generated if the offset within the resource buffer
5713 was 0 or 1. The optimizer shortened the AML code to a single byte opcode
5714 but did not update the surrounding package lengths.
5716 Changes to the Dma macro: All channels within the channel list must be in
5717 the range 0-7. Maximum 8 channels can be specified. BusMaster operand is
5718 optional (default is BusMaster).
5720 Implemented check for maximum 7 data bytes for the VendorShort macro.
5722 The ReadWrite parameter is now optional for the Memory32 and similar macros.
5724 ----------------------------------------
5725 03 December 2004. Summary of changes for version 20041203:
5727 1) ACPI CA Core Subsystem:
5729 The low-level field insertion/extraction code (exfldio) has been completely
5730 rewritten to eliminate unnecessary complexity, bugs, and boundary
5733 Fixed a problem in the ToInteger, ToBuffer, ToHexString, and ToDecimalString
5734 operators where the input operand could be inadvertently deleted if no
5735 conversion was necessary (e.g., if the input to ToInteger was an Integer
5738 Fixed a problem with the ToDecimalString and ToHexString where an incorrect
5739 exception code was returned if the resulting string would be > 200 chars.
5740 AE_STRING_LIMIT is now returned.
5742 Fixed a problem with the Concatenate operator where AE_OK was always
5743 returned, even if the operation failed.
5745 Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128
5746 semaphores to be allocated.
5748 Code and Data Size: Current and previous core subsystem library sizes are
5749 shown below. These are the code and data sizes for the acpica.lib produced
5750 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5751 any ACPI driver or OSPM code. The debug version of the code includes the
5752 debug output trace mechanism and has a much larger code and data size. Note
5753 that these values will vary depending on the efficiency of the compiler and
5754 the compiler options used during generation.
5757 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
5758 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
5760 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
5761 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
5764 2) iASL Compiler/Disassembler:
5766 Fixed typechecking for the ObjectType and SizeOf operators. Problem was
5767 recently introduced in 20041119.
5769 Fixed a problem with the ToUUID macro where the upper nybble of each buffer
5770 byte was inadvertently set to zero.
5772 ----------------------------------------
5773 19 November 2004. Summary of changes for version 20041119:
5775 1) ACPI CA Core Subsystem:
5777 Fixed a problem in the internal ConvertToInteger routine where new integers
5778 were not truncated to 32 bits for 32-bit ACPI tables. This routine converts
5779 buffers and strings to integers.
5781 Implemented support to store a value to an Index() on a String object. This
5782 is an ACPI 2.0 feature that had not yet been implemented.
5784 Implemented new behavior for storing objects to individual package elements
5785 (via the Index() operator). The previous behavior was to invoke the implicit
5786 conversion rules if an object was already present at the index. The new
5787 behavior is to simply delete any existing object and directly store the new
5788 object. Although the ACPI specification seems unclear on this subject, other
5789 ACPI implementations behave in this manner. (This is the root of the
5790 AE_BAD_HEX_CONSTANT issue.)
5792 Modified the RSDP memory scan mechanism to support the extended checksum for
5793 ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid
5794 RSDP signature is found with a valid checksum.
5796 Code and Data Size: Current and previous core subsystem library sizes are
5797 shown below. These are the code and data sizes for the acpica.lib produced
5798 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5799 any ACPI driver or OSPM code. The debug version of the code includes the
5800 debug output trace mechanism and has a much larger code and data size. Note
5801 that these values will vary depending on the efficiency of the compiler and
5802 the compiler options used during generation.
5805 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
5806 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
5808 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
5809 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
5812 2) iASL Compiler/Disassembler:
5814 Fixed a missing semicolon in the aslcompiler.y file.
5816 ----------------------------------------
5817 05 November 2004. Summary of changes for version 20041105:
5819 1) ACPI CA Core Subsystem:
5821 Implemented support for FADT revision 2. This was an interim table (between
5822 ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register.
5824 Implemented optional support to allow uninitialized LocalX and ArgX
5825 variables in a control method. The variables are initialized to an Integer
5826 object with a value of zero. This support is enabled by setting the
5827 AcpiGbl_EnableInterpreterSlack flag to TRUE.
5829 Implemented support for Integer objects for the SizeOf operator. Either 4
5830 or 8 is returned, depending on the current integer size (32-bit or 64-bit,
5831 depending on the parent table revision).
5833 Fixed a problem in the implementation of the SizeOf and ObjectType operators
5834 where the operand was resolved to a value too early, causing incorrect
5835 return values for some objects.
5837 Fixed some possible memory leaks during exceptional conditions.
5839 Code and Data Size: Current and previous core subsystem library sizes are
5840 shown below. These are the code and data sizes for the acpica.lib produced
5841 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5842 any ACPI driver or OSPM code. The debug version of the code includes the
5843 debug output trace mechanism and has a much larger code and data size. Note
5844 that these values will vary depending on the efficiency of the compiler and
5845 the compiler options used during generation.
5848 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
5849 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
5851 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
5852 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
5855 2) iASL Compiler/Disassembler:
5857 Implemented support for all ACPI 3.0 reserved names and methods.
5859 Implemented all ACPI 3.0 grammar elements in the front-end, including
5860 support for semicolons.
5862 Implemented the ACPI 3.0 Function() and ToUUID() macros
5864 Fixed a problem in the disassembler where a Scope() operator would not be
5865 emitted properly if the target of the scope was in another table.
5867 ----------------------------------------
5868 15 October 2004. Summary of changes for version 20041015:
5870 Note: ACPI CA is currently undergoing an in-depth and complete formal
5871 evaluation to test/verify the following areas. Other suggestions are
5872 welcome. This will result in an increase in the frequency of releases and
5873 the number of bug fixes in the next few months.
5874 - Functional tests for all ASL/AML operators
5875 - All implicit/explicit type conversions
5876 - Bit fields and operation regions
5877 - 64-bit math support and 32-bit-only "truncated" math support
5878 - Exceptional conditions, both compiler and interpreter
5879 - Dynamic object deletion and memory leaks
5880 - ACPI 3.0 support when implemented
5881 - External interfaces to the ACPI subsystem
5884 1) ACPI CA Core Subsystem:
5886 Fixed two alignment issues on 64-bit platforms - within debug statements in
5887 AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the Address
5888 field within the non-aligned ACPI generic address structure.
5890 Fixed a problem in the Increment and Decrement operators where incorrect
5891 operand resolution could result in the inadvertent modification of the
5892 original integer when the integer is passed into another method as an
5893 argument and the arg is then incremented/decremented.
5895 Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-bit
5896 BCD number were truncated during conversion.
5898 Fixed a problem in the ToDecimal operator where the length of the resulting
5899 string could be set incorrectly too long if the input operand was a Buffer
5902 Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte (0)
5903 within a buffer would prematurely terminate a compare between buffer
5906 Added a check for string overflow (>200 characters as per the ACPI
5907 specification) during the Concatenate operator with two string operands.
5909 Code and Data Size: Current and previous core subsystem library sizes are
5910 shown below. These are the code and data sizes for the acpica.lib produced
5911 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5912 any ACPI driver or OSPM code. The debug version of the code includes the
5913 debug output trace mechanism and has a much larger code and data size. Note
5914 that these values will vary depending on the efficiency of the compiler and
5915 the compiler options used during generation.
5918 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
5919 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
5921 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
5922 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
5926 2) iASL Compiler/Disassembler:
5928 Allow the use of the ObjectType operator on uninitialized Locals and Args
5929 (returns 0 as per the ACPI specification).
5931 Fixed a problem where the compiler would fault if there was a syntax error
5932 in the FieldName of all of the various CreateXXXField operators.
5934 Disallow the use of lower case letters within the EISAID macro, as per the
5935 ACPI specification. All EISAID strings must be of the form "UUUNNNN" Where
5936 U is an uppercase letter and N is a hex digit.
5939 ----------------------------------------
5940 06 October 2004. Summary of changes for version 20041006:
5942 1) ACPI CA Core Subsystem:
5944 Implemented support for the ACPI 3.0 Timer operator. This ASL function
5945 implements a 64-bit timer with 100 nanosecond granularity.
5947 Defined a new OSL interface, AcpiOsGetTimer. This interface is used to
5948 implement the ACPI 3.0 Timer operator. This allows the host OS to implement
5949 the timer with the best clock available. Also, it keeps the core subsystem
5950 out of the clock handling business, since the host OS (usually) performs
5953 Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write)
5954 functions use a 64-bit address which is part of the packed ACPI Generic
5955 Address Structure. Since the structure is non-aligned, the alignment macros
5956 are now used to extract the address to a local variable before use.
5958 Fixed a problem where the ToInteger operator assumed all input strings were
5959 hexadecimal. The operator now handles both decimal strings and hex strings
5960 (prefixed with "0x").
5962 Fixed a problem where the string length in the string object created as a
5963 result of the internal ConvertToString procedure could be incorrect. This
5964 potentially affected all implicit conversions and also the ToDecimalString
5965 and ToHexString operators.
5967 Fixed two problems in the ToString operator. If the length parameter was
5968 zero, an incorrect string object was created and the value of the input
5969 length parameter was inadvertently changed from zero to Ones.
5971 Fixed a problem where the optional ResourceSource string in the ExtendedIRQ
5972 resource macro was ignored.
5974 Simplified the interfaces to the internal division functions, reducing code
5975 size and complexity.
5977 Code and Data Size: Current and previous core subsystem library sizes are
5978 shown below. These are the code and data sizes for the acpica.lib produced
5979 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5980 any ACPI driver or OSPM code. The debug version of the code includes the
5981 debug output trace mechanism and has a much larger code and data size. Note
5982 that these values will vary depending on the efficiency of the compiler and
5983 the compiler options used during generation.
5986 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
5987 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
5989 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
5990 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
5993 2) iASL Compiler/Disassembler:
5995 Implemented support for the ACPI 3.0 Timer operator.
5997 Fixed a problem where the Default() operator was inadvertently ignored in a
5998 Switch/Case block. This was a problem in the translation of the Switch
5999 statement to If...Else pairs.
6001 Added support to allow a standalone Return operator, with no parentheses (or
6004 Fixed a problem with code generation for the ElseIf operator where the
6005 translated Else...If parse tree was improperly constructed leading to the
6008 ----------------------------------------
6009 22 September 2004. Summary of changes for version 20040922:
6011 1) ACPI CA Core Subsystem:
6013 Fixed a problem with the implementation of the LNot() operator where "Ones"
6014 was not returned for the TRUE case. Changed the code to return Ones instead
6015 of (!Arg) which was usually 1. This change affects iASL constant folding for
6018 Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was not
6019 initialized properly -- Now zero the entire buffer in this case where the
6020 buffer already exists.
6022 Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32
6023 Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all
6024 related code considerably. This will require changes/updates to all OS
6025 interface layers (OSLs.)
6027 Implemented a new external interface, AcpiInstallExceptionHandler, to allow
6028 a system exception handler to be installed. This handler is invoked upon any
6029 run-time exception that occurs during control method execution.
6031 Added support for the DSDT in AcpiTbFindTable. This allows the
6032 DataTableRegion() operator to access the local copy of the DSDT.
6034 Code and Data Size: Current and previous core subsystem library sizes are
6035 shown below. These are the code and data sizes for the acpica.lib produced
6036 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
6037 any ACPI driver or OSPM code. The debug version of the code includes the
6038 debug output trace mechanism and has a much larger code and data size. Note
6039 that these values will vary depending on the efficiency of the compiler and
6040 the compiler options used during generation.
6043 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
6044 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
6046 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
6047 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
6050 2) iASL Compiler/Disassembler:
6052 Fixed a problem with constant folding and the LNot operator. LNot was
6053 returning 1 in the TRUE case, not Ones as per the ACPI specification. This
6054 could result in the generation of an incorrect folded/reduced constant.
6056 End-Of-File is now allowed within a "//"-style comment. A parse error no
6057 longer occurs if such a comment is at the very end of the input ASL source
6060 Implemented the "-r" option to override the Revision in the table header.
6061 The initial use of this option will be to simplify the evaluation of the AML
6062 interpreter by allowing a single ASL source module to be compiled for either
6063 32-bit or 64-bit integers.
6066 ----------------------------------------
6067 27 August 2004. Summary of changes for version 20040827:
6069 1) ACPI CA Core Subsystem:
6071 - Implemented support for implicit object conversion in the non-numeric
6072 logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, and
6073 LNotEqual.) Any combination of Integers/Strings/Buffers may now be used;
6074 the second operand is implicitly converted on the fly to match the type of
6075 the first operand. For example:
6077 LEqual (Source1, Source2)
6079 Source1 and Source2 must each evaluate to an integer, a string, or a buffer.
6080 The data type of Source1 dictates the required type of Source2. Source2 is
6081 implicitly converted if necessary to match the type of Source1.
6083 - Updated and corrected the behavior of the string conversion support. The
6084 rules concerning conversion of buffers to strings (according to the ACPI
6085 specification) are as follows:
6087 ToDecimalString - explicit byte-wise conversion of buffer to string of
6088 decimal values (0-255) separated by commas. ToHexString - explicit byte-wise
6089 conversion of buffer to string of hex values (0-FF) separated by commas.
6090 ToString - explicit byte-wise conversion of buffer to string. Byte-by-byte
6091 copy with no transform except NULL terminated. Any other implicit buffer-to-
6092 string conversion - byte-wise conversion of buffer to string of hex values
6093 (0-FF) separated by spaces.
6095 - Fixed typo in definition of AcpiGbl_EnableInterpreterSlack.
6097 - Fixed a problem in AcpiNsGetPathnameLength where the returned length was
6098 one byte too short in the case of a node in the root scope. This could
6099 cause a fault during debug output.
6101 - Code and Data Size: Current and previous core subsystem library sizes are
6102 shown below. These are the code and data sizes for the acpica.lib produced
6103 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
6104 any ACPI driver or OSPM code. The debug version of the code includes the
6105 debug output trace mechanism and has a much larger code and data size. Note
6106 that these values will vary depending on the efficiency of the compiler and
6107 the compiler options used during generation.
6110 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
6111 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
6113 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
6114 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
6117 2) iASL Compiler/Disassembler:
6119 - Fixed a Linux generation error.
6122 ----------------------------------------
6123 16 August 2004. Summary of changes for version 20040816:
6125 1) ACPI CA Core Subsystem:
6127 Designed and implemented support within the AML interpreter for the so-
6128 called "implicit return". This support returns the result of the last ASL
6129 operation within a control method, in the absence of an explicit Return()
6130 operator. A few machines depend on this behavior, even though it is not
6131 explicitly supported by the ASL language. It is optional support that can
6132 be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag.
6134 Removed support for the PCI_Config address space from the internal low level
6135 hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This
6136 support was not used internally, and would not work correctly anyway because
6137 the PCI bus number and segment number were not supported. There are
6138 separate interfaces for PCI configuration space access because of the unique
6141 Code and Data Size: Current and previous core subsystem library sizes are
6142 shown below. These are the code and data sizes for the acpica.lib produced
6143 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
6144 any ACPI driver or OSPM code. The debug version of the code includes the
6145 debug output trace mechanism and has a much larger code and data size. Note
6146 that these values will vary depending on the efficiency of the compiler and
6147 the compiler options used during generation.
6150 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
6151 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
6153 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
6154 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
6157 2) iASL Compiler/Disassembler:
6159 Fixed a problem where constants in ASL expressions at the root level (not
6160 within a control method) could be inadvertently truncated during code
6161 generation. This problem was introduced in the 20040715 release.
6164 ----------------------------------------
6165 15 July 2004. Summary of changes for version 20040715:
6167 1) ACPI CA Core Subsystem:
6169 Restructured the internal HW GPE interfaces to pass/track the current state
6170 of interrupts (enabled/disabled) in order to avoid possible deadlock and
6171 increase flexibility of the interfaces.
6173 Implemented a "lexicographical compare" for String and Buffer objects within
6174 the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual --
6175 as per further clarification to the ACPI specification. Behavior is similar
6176 to C library "strcmp".
6178 Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable
6179 external function. In the 32-bit non-debug case, the stack use has been
6180 reduced from 168 bytes to 32 bytes.
6182 Deployed a new run-time configuration flag, AcpiGbl_EnableInterpreterSlack,
6183 whose purpose is to allow the AML interpreter to forgive certain bad AML
6184 constructs. Default setting is FALSE.
6186 Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field IO
6187 support code. If enabled, it allows field access to go beyond the end of a
6188 region definition if the field is within the region length rounded up to the
6189 next access width boundary (a common coding error.)
6191 Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to
6192 ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also, these
6193 symbols are lowercased by the latest version of the AcpiSrc tool.
6195 The prototypes for the PCI interfaces in acpiosxf.h have been updated to
6196 rename "Register" to simply "Reg" to prevent certain compilers from
6199 Code and Data Size: Current and previous core subsystem library sizes are
6200 shown below. These are the code and data sizes for the acpica.lib produced
6201 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
6202 any ACPI driver or OSPM code. The debug version of the code includes the
6203 debug output trace mechanism and has a much larger code and data size. Note
6204 that these values will vary depending on the efficiency of the compiler and
6205 the compiler options used during generation.
6208 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
6209 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
6211 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
6212 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
6215 2) iASL Compiler/Disassembler:
6217 Implemented full support for Package objects within the Case() operator.
6218 Note: The Break() operator is currently not supported within Case blocks
6219 (TermLists) as there is some question about backward compatibility with ACPI
6223 Fixed a problem where complex terms were not supported properly within the
6226 Eliminated extraneous warning for compiler-emitted reserved names of the
6227 form "_T_x". (Used in Switch/Case operators.)
6229 Eliminated optimization messages for "_T_x" objects and small constants
6230 within the DefinitionBlock operator.
6233 ----------------------------------------
6234 15 June 2004. Summary of changes for version 20040615:
6236 1) ACPI CA Core Subsystem:
6238 Implemented support for Buffer and String objects (as per ACPI 2.0) for the
6239 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
6242 All directory names in the entire source package are lower case, as they
6243 were in earlier releases.
6245 Implemented "Disassemble" command in the AML debugger that will disassemble
6246 a single control method.
6248 Code and Data Size: Current and previous core subsystem library sizes are
6249 shown below. These are the code and data sizes for the acpica.lib produced
6250 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
6251 any ACPI driver or OSPM code. The debug version of the code includes the
6252 debug output trace mechanism and has a much larger code and data size. Note
6253 that these values will vary depending on the efficiency of the compiler and
6254 the compiler options used during generation.
6257 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
6258 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
6261 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
6262 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
6265 2) iASL Compiler/Disassembler:
6267 Implemented support for Buffer and String objects (as per ACPI 2.0) for the
6268 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
6271 All directory names in the entire source package are lower case, as they
6272 were in earlier releases.
6274 Fixed a fault when using the -g or -d<nofilename> options if the FADT was
6277 Fixed an issue with the Windows version of the compiler where later versions
6278 of Windows place the FADT in the registry under the name "FADT" and not
6279 "FACP" as earlier versions did. This applies when using the -g or -
6280 d<nofilename> options. The compiler now looks for both strings as
6283 Fixed a problem with compiler namepath optimization where a namepath within
6284 the Scope() operator could not be optimized if the namepath was a subpath of
6285 the current scope path.
6287 ----------------------------------------
6288 27 May 2004. Summary of changes for version 20040527:
6290 1) ACPI CA Core Subsystem:
6292 Completed a new design and implementation for EBDA (Extended BIOS Data Area)
6293 support in the RSDP scan code. The original code improperly scanned for the
6294 EBDA by simply scanning from memory location 0 to 0x400. The correct method
6295 is to first obtain the EBDA pointer from within the BIOS data area, then
6296 scan 1K of memory starting at the EBDA pointer. There appear to be few if
6297 any machines that place the RSDP in the EBDA, however.
6299 Integrated a fix for a possible fault during evaluation of BufferField
6300 arguments. Obsolete code that was causing the problem was removed.
6302 Found and fixed a problem in the Field Support Code where data could be
6303 corrupted on a bit field read that starts on an aligned boundary but does
6304 not end on an aligned boundary. Merged the read/write "datum length"
6305 calculation code into a common procedure.
6307 Rolled in a couple of changes to the FreeBSD-specific header.
6310 Code and Data Size: Current and previous core subsystem library sizes are
6311 shown below. These are the code and data sizes for the acpica.lib produced
6312 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
6313 any ACPI driver or OSPM code. The debug version of the code includes the
6314 debug output trace mechanism and has a much larger code and data size. Note
6315 that these values will vary depending on the efficiency of the compiler and
6316 the compiler options used during generation.
6319 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
6320 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
6322 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
6323 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
6326 2) iASL Compiler/Disassembler:
6328 Fixed a generation warning produced by some overly-verbose compilers for a
6331 ----------------------------------------
6332 14 May 2004. Summary of changes for version 20040514:
6334 1) ACPI CA Core Subsystem:
6336 Fixed a problem where hardware GPE enable bits sometimes not set properly
6337 during and after GPE method execution. Result of 04/27 changes.
6339 Removed extra "clear all GPEs" when sleeping/waking.
6341 Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single
6342 AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above to
6343 the new AcpiEv* calls as appropriate.
6345 ACPI_OS_NAME was removed from the OS-specific headers. The default name is
6346 now "Microsoft Windows NT" for maximum compatibility. However this can be
6347 changed by modifying the acconfig.h file.
6349 Allow a single invocation of AcpiInstallNotifyHandler for a handler that
6350 traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag.
6352 Run _INI methods on ThermalZone objects. This is against the ACPI
6353 specification, but there is apparently ASL code in the field that has these
6354 _INI methods, and apparently "other" AML interpreters execute them.
6356 Performed a full 16/32/64 bit lint that resulted in some small changes.
6358 Added a sleep simulation command to the AML debugger to test sleep code.
6360 Code and Data Size: Current and previous core subsystem library sizes are
6361 shown below. These are the code and data sizes for the acpica.lib produced
6362 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
6363 any ACPI driver or OSPM code. The debug version of the code includes the
6364 debug output trace mechanism and has a much larger code and data size. Note
6365 that these values will vary depending on the efficiency of the compiler and
6366 the compiler options used during generation.
6369 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
6370 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
6372 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
6373 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
6375 ----------------------------------------
6376 27 April 2004. Summary of changes for version 20040427:
6378 1) ACPI CA Core Subsystem:
6380 Completed a major overhaul of the GPE handling within ACPI CA. There are
6381 now three types of GPEs: wake-only, runtime-only, and combination wake/run.
6382 The only GPEs allowed to be combination wake/run are for button-style
6383 devices such as a control-method power button, control-method sleep button,
6384 or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are not
6385 referenced by any _PRW methods are marked for "runtime" and hardware
6386 enabled. Any GPE that is referenced by a _PRW method is marked for "wake"
6387 (and disabled at runtime). However, at sleep time, only those GPEs that
6388 have been specifically enabled for wake via the AcpiEnableGpe interface will
6389 actually be hardware enabled.
6391 A new external interface has been added, AcpiSetGpeType(), that is meant to
6392 be used by device drivers to force a GPE to a particular type. It will be
6393 especially useful for the drivers for the button devices mentioned above.
6395 Completed restructuring of the ACPI CA initialization sequence so that
6396 default operation region handlers are installed before GPEs are initialized
6397 and the _PRW methods are executed. This will prevent errors when the _PRW
6398 methods attempt to access system memory or I/O space.
6400 GPE enable/disable no longer reads the GPE enable register. We now keep the
6401 enable info for runtime and wake separate and in the GPE_EVENT_INFO. We
6402 thus no longer depend on the hardware to maintain these bits.
6404 Always clear the wake status and fixed/GPE status bits before sleep, even
6407 Improved the AML debugger output for displaying the GPE blocks and their
6410 Added new strings for the _OSI method, of the form "Windows 2001 SPx" where
6413 Fixed a problem where the physical address was incorrectly calculated when
6414 the Load() operator was used to directly load from an Operation Region (vs.
6415 loading from a Field object.) Also added check for minimum table length for
6418 Fix for multiple mutex acquisition. Restore original thread SyncLevel on
6421 Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for
6422 consistency with the other fields returned.
6424 Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such
6425 structure for each GPE in the system, so the size of this structure is
6428 CPU stack requirement reduction: Cleaned up the method execution and object
6429 evaluation paths so that now a parameter structure is passed, instead of
6430 copying the various method parameters over and over again.
6432 In evregion.c: Correctly exit and reenter the interpreter region if and
6433 only if dispatching an operation region request to a user-installed handler.
6434 Do not exit/reenter when dispatching to a default handler (e.g., default
6435 system memory or I/O handlers)
6438 Notes for updating drivers for the new GPE support. The following changes
6439 must be made to ACPI-related device drivers that are attached to one or more
6440 GPEs: (This information will be added to the ACPI CA Programmer Reference.)
6442 1) AcpiInstallGpeHandler no longer automatically enables the GPE, you must
6443 explicitly call AcpiEnableGpe.
6444 2) There is a new interface called AcpiSetGpeType. This should be called
6445 before enabling the GPE. Also, this interface will automatically disable
6446 the GPE if it is currently enabled.
6447 3) AcpiEnableGpe no longer supports a GPE type flag.
6449 Specific drivers that must be changed:
6451 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED,
6452 AeGpeHandler, NULL);
6453 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME);
6454 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR);
6456 2) Button Drivers (Power, Lid, Sleep):
6457 Run _PRW method under parent device
6458 If _PRW exists: /* This is a control-method button */
6459 Extract GPE number and possibly GpeDevice
6460 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN);
6461 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR);
6463 For all other devices that have _PRWs, we automatically set the GPE type to
6464 ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. This
6465 must be done on a selective basis, usually requiring some kind of user app
6466 to allow the user to pick the wake devices.
6469 Code and Data Size: Current and previous core subsystem library sizes are
6470 shown below. These are the code and data sizes for the acpica.lib produced
6471 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
6472 any ACPI driver or OSPM code. The debug version of the code includes the
6473 debug output trace mechanism and has a much larger code and data size. Note
6474 that these values will vary depending on the efficiency of the compiler and
6475 the compiler options used during generation.
6478 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
6479 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
6482 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
6483 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
6487 ----------------------------------------
6488 02 April 2004. Summary of changes for version 20040402:
6490 1) ACPI CA Core Subsystem:
6492 Fixed an interpreter problem where an indirect store through an ArgX
6493 parameter was incorrectly applying the "implicit conversion rules" during
6494 the store. From the ACPI specification: "If the target is a method local or
6495 argument (LocalX or ArgX), no conversion is performed and the result is
6496 stored directly to the target". The new behavior is to disable implicit
6497 conversion during ALL stores to an ArgX.
6499 Changed the behavior of the _PRW method scan to ignore any and all errors
6500 returned by a given _PRW. This prevents the scan from aborting from the
6501 failure of any single _PRW.
6503 Moved the runtime configuration parameters from the global init procedure to
6504 static variables in acglobal.h. This will allow the host to override the
6505 default values easily.
6507 Code and Data Size: Current and previous core subsystem library sizes are
6508 shown below. These are the code and data sizes for the acpica.lib produced
6509 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
6510 any ACPI driver or OSPM code. The debug version of the code includes the
6511 debug output trace mechanism and has a much larger code and data size. Note
6512 that these values will vary depending on the efficiency of the compiler and
6513 the compiler options used during generation.
6516 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
6517 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
6519 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
6520 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
6523 2) iASL Compiler/Disassembler:
6525 iASL now fully disassembles SSDTs. However, External() statements are not
6526 generated automatically for unresolved symbols at this time. This is a
6527 planned feature for future implementation.
6529 Fixed a scoping problem in the disassembler that occurs when the type of the
6530 target of a Scope() operator is overridden. This problem caused an
6531 incorrectly nested internal namespace to be constructed.
6533 Any warnings or errors that are emitted during disassembly are now commented
6534 out automatically so that the resulting file can be recompiled without any
6537 ----------------------------------------
6538 26 March 2004. Summary of changes for version 20040326:
6540 1) ACPI CA Core Subsystem:
6542 Implemented support for "wake" GPEs via interaction between GPEs and the
6543 _PRW methods. Every GPE that is pointed to by one or more _PRWs is
6544 identified as a WAKE GPE and by default will no longer be enabled at
6545 runtime. Previously, we were blindly enabling all GPEs with a corresponding
6546 _Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway. We
6547 believe this has been the cause of thousands of "spurious" GPEs on some
6550 This new GPE behavior is can be reverted to the original behavior (enable
6551 ALL GPEs at runtime) via a runtime flag.
6553 Fixed a problem where aliased control methods could not access objects
6554 properly. The proper scope within the namespace was not initialized
6555 (transferred to the target of the aliased method) before executing the
6558 Fixed a potential race condition on internal object deletion on the return
6559 object in AcpiEvaluateObject.
6561 Integrated a fix for resource descriptors where both _MEM and _MTP were
6562 being extracted instead of just _MEM. (i.e. bitmask was incorrectly too
6563 wide, 0x0F instead of 0x03.)
6565 Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, preventing a
6566 fault in some cases.
6568 Updated Notify() values for debug statements in evmisc.c
6570 Return proper status from AcpiUtMutexInitialize, not just simply AE_OK.
6572 Code and Data Size: Current and previous core subsystem library sizes are
6573 shown below. These are the code and data sizes for the acpica.lib produced
6574 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
6575 any ACPI driver or OSPM code. The debug version of the code includes the
6576 debug output trace mechanism and has a much larger code and data size. Note
6577 that these values will vary depending on the efficiency of the compiler and
6578 the compiler options used during generation.
6582 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
6583 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
6585 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
6586 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
6588 ----------------------------------------
6589 11 March 2004. Summary of changes for version 20040311:
6591 1) ACPI CA Core Subsystem:
6593 Fixed a problem where errors occurring during the parse phase of control
6594 method execution did not abort cleanly. For example, objects created and
6595 installed in the namespace were not deleted. This caused all subsequent
6596 invocations of the method to return the AE_ALREADY_EXISTS exception.
6598 Implemented a mechanism to force a control method to "Serialized" execution
6599 if the method attempts to create namespace objects. (The root of the
6600 AE_ALREADY_EXISTS problem.)
6602 Implemented support for the predefined _OSI "internal" control method.
6603 Initial supported strings are "Linux", "Windows 2000", "Windows 2001", and
6604 "Windows 2001.1", and can be easily upgraded for new strings as necessary.
6605 This feature will allow "other" operating systems to execute the fully
6606 tested, "Windows" code path through the ASL code
6608 Global Lock Support: Now allows multiple acquires and releases with any
6609 internal thread. Removed concept of "owning thread" for this special mutex.
6611 Fixed two functions that were inappropriately declaring large objects on the
6612 CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage during
6613 method execution considerably.
6615 Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the
6616 S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT.
6618 Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs
6619 defined on the machine.
6621 Implemented two runtime options: One to force all control method execution
6622 to "Serialized" to mimic Windows behavior, another to disable _OSI support
6623 if it causes problems on a given machine.
6625 Code and Data Size: Current and previous core subsystem library sizes are
6626 shown below. These are the code and data sizes for the acpica.lib produced
6627 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
6628 any ACPI driver or OSPM code. The debug version of the code includes the
6629 debug output trace mechanism and has a much larger code and data size. Note
6630 that these values will vary depending on the efficiency of the compiler and
6631 the compiler options used during generation.
6634 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
6635 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
6637 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
6638 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
6640 2) iASL Compiler/Disassembler:
6642 Fixed an array size problem for FreeBSD that would cause the compiler to
6645 ----------------------------------------
6646 20 February 2004. Summary of changes for version 20040220:
6649 1) ACPI CA Core Subsystem:
6651 Implemented execution of _SxD methods for Device objects in the
6652 GetObjectInfo interface.
6654 Fixed calls to _SST method to pass the correct arguments.
6656 Added a call to _SST on wake to restore to "working" state.
6658 Check for End-Of-Buffer failure case in the WalkResources interface.
6660 Integrated fix for 64-bit alignment issue in acglobal.h by moving two
6661 structures to the beginning of the file.
6663 After wake, clear GPE status register(s) before enabling GPEs.
6665 After wake, clear/enable power button. (Perhaps we should clear/enable all
6666 fixed events upon wake.)
6668 Fixed a couple of possible memory leaks in the Namespace manager.
6670 Integrated latest acnetbsd.h file.
6672 ----------------------------------------
6673 11 February 2004. Summary of changes for version 20040211:
6676 1) ACPI CA Core Subsystem:
6678 Completed investigation and implementation of the call-by-reference
6679 mechanism for control method arguments.
6681 Fixed a problem where a store of an object into an indexed package could
6682 fail if the store occurs within a different method than the method that
6683 created the package.
6685 Fixed a problem where the ToDecimal operator could return incorrect results.
6687 Fixed a problem where the CopyObject operator could fail on some of the more
6688 obscure objects (e.g., Reference objects.)
6690 Improved the output of the Debug object to display buffer, package, and
6693 Fixed a problem where constructs of the form "RefOf (ArgX)" did not return
6694 the expected result.
6696 Added permanent ACPI_REPORT_ERROR macros for all instances of the
6697 ACPI_AML_INTERNAL exception.
6699 Integrated latest version of acfreebsd.h
6701 ----------------------------------------
6702 16 January 2004. Summary of changes for version 20040116:
6704 The purpose of this release is primarily to update the copyright years in
6705 each module, thus causing a huge number of diffs. There are a few small
6706 functional changes, however.
6708 1) ACPI CA Core Subsystem:
6710 Improved error messages when there is a problem finding one or more of the
6711 required base ACPI tables
6713 Reintroduced the definition of APIC_HEADER in actbl.h
6715 Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h)
6717 Removed extraneous reference to NewObj in dsmthdat.c
6721 Fixed a problem introduced in December that disabled the correct disassembly
6722 of Resource Templates
6725 ----------------------------------------
6726 03 December 2003. Summary of changes for version 20031203:
6728 1) ACPI CA Core Subsystem:
6730 Changed the initialization of Operation Regions during subsystem
6731 init to perform two entire walks of the ACPI namespace; The first
6732 to initialize the regions themselves, the second to execute the
6733 _REG methods. This fixed some interdependencies across _REG
6734 methods found on some machines.
6736 Fixed a problem where a Store(Local0, Local1) could simply update
6737 the object reference count, and not create a new copy of the
6738 object if the Local1 is uninitialized.
6740 Implemented support for the _SST reserved method during sleep
6743 Implemented support to clear the SLP_TYP and SLP_EN bits when
6744 waking up, this is apparently required by some machines.
6746 When sleeping, clear the wake status only if SleepState is not S5.
6748 Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect
6749 pointer arithmetic advanced a string pointer too far.
6751 Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer
6752 could be returned if the requested table has not been loaded.
6754 Within the support for IRQ resources, restructured the handling of
6755 the active and edge/level bits.
6757 Fixed a few problems in AcpiPsxExecute() where memory could be
6758 leaked under certain error conditions.
6760 Improved error messages for the cases where the ACPI mode could
6763 Code and Data Size: Current and previous core subsystem library
6764 sizes are shown below. These are the code and data sizes for the
6765 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
6766 these values do not include any ACPI driver or OSPM code. The
6767 debug version of the code includes the debug output trace
6768 mechanism and has a much larger code and data size. Note that
6769 these values will vary depending on the efficiency of the compiler
6770 and the compiler options used during generation.
6772 Previous Release (20031029):
6773 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
6774 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
6776 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
6777 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
6779 2) iASL Compiler/Disassembler:
6781 Implemented a fix for the iASL disassembler where a bad index was
6782 generated. This was most noticeable on 64-bit platforms
6785 ----------------------------------------
6786 29 October 2003. Summary of changes for version 20031029:
6788 1) ACPI CA Core Subsystem:
6791 Fixed a problem where a level-triggered GPE with an associated
6792 _Lxx control method was incorrectly cleared twice.
6794 Fixed a problem with the Field support code where an access can
6795 occur beyond the end-of-region if the field is non-aligned but
6796 extends to the very end of the parent region (resulted in an
6797 AE_AML_REGION_LIMIT exception.)
6799 Fixed a problem with ACPI Fixed Events where an RT Clock handler
6800 would not get invoked on an RTC event. The RTC event bitmasks for
6801 the PM1 registers were not being initialized properly.
6803 Implemented support for executing _STA and _INI methods for
6804 Processor objects. Although this is currently not part of the
6805 ACPI specification, there is existing ASL code that depends on the
6806 init-time execution of these methods.
6808 Implemented and deployed a GetDescriptorName function to decode
6809 the various types of internal descriptors. Guards against null
6810 descriptors during debug output also.
6812 Implemented and deployed a GetNodeName function to extract the 4-
6813 character namespace node name. This function simplifies the debug
6814 and error output, as well as guarding against null pointers during
6817 Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to
6818 simplify the debug and error output of 64-bit integers. This
6819 macro replaces the HIDWORD and LODWORD macros for dumping these
6822 Updated the implementation of the Stall() operator to only call
6823 AcpiOsStall(), and also return an error if the operand is larger
6824 than 255. This preserves the required behavior of not
6825 relinquishing the processor, as would happen if AcpiOsSleep() was
6826 called for "long stalls".
6828 Constructs of the form "Store(LocalX,LocalX)" where LocalX is not
6829 initialized are now treated as NOOPs.
6831 Cleaned up a handful of warnings during 64-bit generation.
6833 Fixed a reported error where and incorrect GPE number was passed
6834 to the GPE dispatch handler. This value is only used for error
6835 output, however. Used this opportunity to clean up and streamline
6836 the GPE dispatch code.
6838 Code and Data Size: Current and previous core subsystem library
6839 sizes are shown below. These are the code and data sizes for the
6840 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
6841 these values do not include any ACPI driver or OSPM code. The
6843 debug version of the code includes the debug output trace
6844 mechanism and has a much larger code and data size. Note that
6845 these values will vary depending on the efficiency of the compiler
6846 and the compiler options used during generation.
6848 Previous Release (20031002):
6849 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
6850 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
6852 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
6853 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
6856 2) iASL Compiler/Disassembler:
6858 Updated the iASL compiler to return an error if the operand to the
6859 Stall() operator is larger than 255.
6862 ----------------------------------------
6863 02 October 2003. Summary of changes for version 20031002:
6866 1) ACPI CA Core Subsystem:
6868 Fixed a problem with Index Fields where the index was not
6869 incremented for fields that require multiple writes to the
6870 index/data registers (Fields that are wider than the data
6873 Fixed a problem with all Field objects where a write could go
6874 beyond the end-of-field if the field was larger than the access
6875 granularity and therefore required multiple writes to complete the
6876 request. An extra write beyond the end of the field could happen
6879 Fixed a problem with Index Fields where a BUFFER_OVERFLOW error
6880 would incorrectly be returned if the width of the Data Register
6881 was larger than the specified field access width.
6883 Completed fixes for LoadTable() and Unload() and verified their
6884 operation. Implemented full support for the "DdbHandle" object
6885 throughout the ACPI CA subsystem.
6887 Implemented full support for the MADT and ECDT tables in the ACPI
6888 CA header files. Even though these tables are not directly
6889 consumed by ACPI CA, the header definitions are useful for ACPI
6892 Integrated resource descriptor fixes posted to the Linux ACPI
6893 list. This included checks for minimum descriptor length, and
6894 support for trailing NULL strings within descriptors that have
6895 optional string elements.
6897 Code and Data Size: Current and previous core subsystem library
6898 sizes are shown below. These are the code and data sizes for the
6899 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
6900 these values do not include any ACPI driver or OSPM code. The
6901 debug version of the code includes the debug output trace
6902 mechanism and has a much larger code and data size. Note that
6903 these values will vary depending on the efficiency of the compiler
6904 and the compiler options used during generation.
6906 Previous Release (20030918):
6907 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
6908 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
6910 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
6911 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
6916 Implemented detection of non-ASCII characters within the input
6917 source ASL file. This catches attempts to compile binary (AML)
6918 files early in the compile, with an informative error message.
6920 Fixed a problem where the disassembler would fault if the output
6921 filename could not be generated or if the output file could not be
6924 ----------------------------------------
6925 18 September 2003. Summary of changes for version 20030918:
6928 1) ACPI CA Core Subsystem:
6930 Found and fixed a longstanding problem with the late execution of
6931 the various deferred AML opcodes (such as Operation Regions,
6932 Buffer Fields, Buffers, and Packages). If the name string
6933 specified for the name of the new object placed the object in a
6934 scope other than the current scope, the initialization/execution
6935 of the opcode failed. The solution to this problem was to
6936 implement a mechanism where the late execution of such opcodes
6937 does not attempt to lookup/create the name a second time in an
6938 incorrect scope. This fixes the "region size computed
6939 incorrectly" problem.
6941 Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a
6942 Global Lock AE_BAD_PARAMETER error.
6944 Fixed several 64-bit issues with prototypes, casting and data
6947 Removed duplicate prototype from acdisasm.h
6949 Fixed an issue involving EC Operation Region Detach (Shaohua Li)
6951 Code and Data Size: Current and previous core subsystem library
6952 sizes are shown below. These are the code and data sizes for the
6953 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
6954 these values do not include any ACPI driver or OSPM code. The
6955 debug version of the code includes the debug output trace
6956 mechanism and has a much larger code and data size. Note that
6957 these values will vary depending on the efficiency of the compiler
6958 and the compiler options used during generation.
6962 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
6963 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
6965 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
6966 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
6971 Fixed the AcpiOsSleep implementation in osunixxf.c to pass the
6972 correct sleep time in seconds.
6974 ----------------------------------------
6975 14 July 2003. Summary of changes for version 20030619:
6977 1) ACPI CA Core Subsystem:
6979 Parse SSDTs in order discovered, as opposed to reverse order
6982 Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas
6989 Dynamically allocate SDT list (suggested by Andi Kleen)
6991 proc function return value cleanups (Andi Kleen)
6993 Correctly handle NMI watchdog during long stalls (Andrew Morton)
6995 Make it so acpismp=force works (reported by Andrew Morton)
6998 ----------------------------------------
6999 19 June 2003. Summary of changes for version 20030619:
7001 1) ACPI CA Core Subsystem:
7003 Fix To/FromBCD, eliminating the need for an arch-specific #define.
7005 Do not acquire a semaphore in the S5 shutdown path.
7007 Fix ex_digits_needed for 0. (Takayoshi Kochi)
7009 Fix sleep/stall code reversal. (Andi Kleen)
7011 Revert a change having to do with control method calling
7016 acpiphp update (Takayoshi Kochi)
7018 Export acpi_disabled for sonypi (Stelian Pop)
7020 Mention acpismp=force in config help
7022 Re-add acpitable.c and acpismp=force. This improves backwards
7024 compatibility and also cleans up the code to a significant degree.
7026 Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge)
7028 ----------------------------------------
7029 22 May 2003. Summary of changes for version 20030522:
7031 1) ACPI CA Core Subsystem:
7033 Found and fixed a reported problem where an AE_NOT_FOUND error
7034 occurred occasionally during _BST evaluation. This turned out to
7035 be an Owner ID allocation issue where a called method did not get
7036 a new ID assigned to it. Eventually, (after 64k calls), the Owner
7037 ID UINT16 would wraparound so that the ID would be the same as the
7038 caller's and the called method would delete the caller's
7041 Implemented extended error reporting for control methods that are
7042 aborted due to a run-time exception. Output includes the exact
7043 AML instruction that caused the method abort, a dump of the method
7044 locals and arguments at the time of the abort, and a trace of all
7045 nested control method calls.
7047 Modified the interpreter to allow the creation of buffers of zero
7048 length from the AML code. Implemented new code to ensure that no
7049 attempt is made to actually allocate a memory buffer (of length
7050 zero) - instead, a simple buffer object with a NULL buffer pointer
7051 and length zero is created. A warning is no longer issued when
7052 the AML attempts to create a zero-length buffer.
7054 Implemented a workaround for the "leading asterisk issue" in
7055 _HIDs, _UIDs, and _CIDs in the AML interpreter. One leading
7056 asterisk is automatically removed if present in any HID, UID, or
7057 CID strings. The iASL compiler will still flag this asterisk as
7060 Implemented full support for _CID methods that return a package of
7061 multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface
7062 now additionally returns a device _CID list if present. This
7063 required a change to the external interface in order to pass an
7064 ACPI_BUFFER object as a parameter since the _CID list is of
7067 Fixed a problem with the new AE_SAME_HANDLER exception where
7068 handler initialization code did not know about this exception.
7070 Code and Data Size: Current and previous core subsystem library
7071 sizes are shown below. These are the code and data sizes for the
7072 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
7073 these values do not include any ACPI driver or OSPM code. The
7074 debug version of the code includes the debug output trace
7075 mechanism and has a much larger code and data size. Note that
7076 these values will vary depending on the efficiency of the compiler
7077 and the compiler options used during generation.
7079 Previous Release (20030509):
7080 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
7081 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
7083 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
7084 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
7089 Fixed a bug in which we would reinitialize the ACPI interrupt
7090 after it was already working, thus disabling all ACPI and the IRQs
7091 for any other device sharing the interrupt. (Thanks to Stian
7094 Toshiba driver update (John Belmonte)
7096 Return only 0 or 1 for our interrupt handler status (Andrew
7102 Fixed a reported problem where multiple (nested) ElseIf()
7103 statements were not handled correctly by the compiler, resulting
7104 in incorrect warnings and incorrect AML code. This was a problem
7105 in both the ASL parser and the code generator.
7110 Added changes to existing interfaces, new exception codes, and new
7111 text concerning reference count object management versus garbage
7114 ----------------------------------------
7115 09 May 2003. Summary of changes for version 20030509.
7118 1) ACPI CA Core Subsystem:
7120 Changed the subsystem initialization sequence to hold off
7121 installation of address space handlers until the hardware has been
7122 initialized and the system has entered ACPI mode. This is because
7123 the installation of space handlers can cause _REG methods to be
7124 run. Previously, the _REG methods could potentially be run before
7125 ACPI mode was enabled.
7127 Fixed some memory leak issues related to address space handler and
7128 notify handler installation. There were some problems with the
7129 reference count mechanism caused by the fact that the handler
7130 objects are shared across several namespace objects.
7132 Fixed a reported problem where reference counts within the
7133 namespace were not properly updated when named objects created by
7134 method execution were deleted.
7136 Fixed a reported problem where multiple SSDTs caused a deletion
7137 issue during subsystem termination. Restructured the table data
7138 structures to simplify the linked lists and the related code.
7140 Fixed a problem where the table ID associated with secondary
7141 tables (SSDTs) was not being propagated into the namespace objects
7142 created by those tables. This would only present a problem for
7143 tables that are unloaded at run-time, however.
7145 Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE
7146 type as the length parameter (instead of UINT32).
7148 Solved a long-standing problem where an ALREADY_EXISTS error
7149 appears on various systems. This problem could happen when there
7150 are multiple PCI_Config operation regions under a single PCI root
7151 bus. This doesn't happen very frequently, but there are some
7152 systems that do this in the ASL.
7154 Fixed a reported problem where the internal DeleteNode function
7155 was incorrectly handling the case where a namespace node was the
7156 first in the parent's child list, and had additional peers (not
7157 the only child, but first in the list of children.)
7159 Code and Data Size: Current core subsystem library sizes are shown
7160 below. These are the code and data sizes for the acpica.lib
7161 produced by the Microsoft Visual C++ 6.0 compiler, and these
7162 values do not include any ACPI driver or OSPM code. The debug
7163 version of the code includes the debug output trace mechanism and
7164 has a much larger code and data size. Note that these values will
7165 vary depending on the efficiency of the compiler and the compiler
7166 options used during generation.
7169 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
7170 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
7172 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
7173 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
7178 Allow ":" in OS override string (Ducrot Bruno)
7180 Kobject fix (Greg KH)
7183 3 iASL Compiler/Disassembler:
7185 Fixed a problem in the generation of the C source code files (AML
7186 is emitted in C source statements for BIOS inclusion) where the
7187 Ascii dump that appears within a C comment at the end of each line
7188 could cause a compile time error if the AML sequence happens to
7189 have an open comment or close comment sequence embedded.
7192 ----------------------------------------
7193 24 April 2003. Summary of changes for version 20030424.
7196 1) ACPI CA Core Subsystem:
7198 Support for big-endian systems has been implemented. Most of the
7199 support has been invisibly added behind big-endian versions of the
7202 Fixed a problem in AcpiHwDisableGpeBlock() and
7203 AcpiHwClearGpeBlock() where an incorrect offset was passed to the
7204 low level hardware write routine. The offset parameter was
7205 actually eliminated from the low level read/write routines because
7206 they had become obsolete.
7208 Fixed a problem where a handler object was deleted twice during
7209 the removal of a fixed event handler.
7214 A fix for SMP systems with link devices was contributed by
7218 (2.5) Return whether we handled the interrupt in our IRQ handler.
7219 (Linux ISRs no longer return void, so we can propagate the handler
7220 return value from the ACPI CA core back to the OS.)
7226 The ACPI CA Programmer Reference has been updated to reflect new
7227 interfaces and changes to existing interfaces.
7229 ----------------------------------------
7230 28 March 2003. Summary of changes for version 20030328.
7232 1) ACPI CA Core Subsystem:
7234 The GPE Block Device support has been completed. New interfaces
7235 are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event
7236 interfaces (enable, disable, clear, getstatus) have been split
7237 into separate interfaces for Fixed Events and General Purpose
7238 Events (GPEs) in order to support GPE Block Devices properly.
7240 Fixed a problem where the error message "Failed to acquire
7241 semaphore" would appear during operations on the embedded
7244 Code and Data Size: Current core subsystem library sizes are shown
7245 below. These are the code and data sizes for the acpica.lib
7246 produced by the Microsoft Visual C++ 6.0 compiler, and these
7247 values do not include any ACPI driver or OSPM code. The debug
7248 version of the code includes the debug output trace mechanism and
7249 has a much larger code and data size. Note that these values will
7250 vary depending on the efficiency of the compiler and the compiler
7251 options used during generation.
7254 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
7255 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
7257 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
7258 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
7261 ----------------------------------------
7262 28 February 2003. Summary of changes for version 20030228.
7265 1) ACPI CA Core Subsystem:
7267 The GPE handling and dispatch code has been completely overhauled
7268 in preparation for support of GPE Block Devices (ID ACPI0006).
7269 This affects internal data structures and code only; there should
7270 be no differences visible externally. One new file has been
7273 The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only
7274 fields that are used to determine the GPE block lengths. The
7275 REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address
7276 structures are ignored. This is per the ACPI specification but it
7277 isn't very clear. The full 256 Block 0/1 GPEs are now supported
7278 (the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128).
7280 In the SCI interrupt handler, removed the read of the PM1_CONTROL
7281 register to look at the SCI_EN bit. On some machines, this read
7282 causes an SMI event and greatly slows down SCI events. (This may
7283 in fact be the cause of slow battery status response on some
7286 Fixed a problem where a store of a NULL string to a package object
7287 could cause the premature deletion of the object. This was seen
7288 during execution of the battery _BIF method on some systems,
7289 resulting in no battery data being returned.
7291 Added AcpiWalkResources interface to simplify parsing of resource
7294 Code and Data Size: Current core subsystem library sizes are shown
7295 below. These are the code and data sizes for the acpica.lib
7296 produced by the Microsoft Visual C++ 6.0 compiler, and these
7297 values do not include any ACPI driver or OSPM code. The debug
7298 version of the code includes the debug output trace mechanism and
7299 has a much larger code and data size. Note that these values will
7300 vary depending on the efficiency of the compiler and the compiler
7301 options used during generation.
7304 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
7305 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
7307 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
7308 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
7313 S3 fixes (Ole Rohne)
7315 Update ACPI PHP driver with to use new acpi_walk_resource API
7318 Add S4BIOS support (Pavel Machek)
7320 Map in entire table before performing checksum (John Stultz)
7322 Expand the mem= cmdline to allow the specification of reserved and
7323 ACPI DATA blocks (Pavel Machek)
7325 Never use ACPI on VISWS
7327 Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez)
7329 Revert a change that allowed P_BLK lengths to be 4 or 5. This is
7330 causing us to think that some systems support C2 when they really
7333 Do not count processor objects for non-present CPUs (Thanks to
7339 Fixed a problem where ASL include files could not be found and
7342 Added support for the _PDC reserved name.
7345 ----------------------------------------
7346 22 January 2003. Summary of changes for version 20030122.
7349 1) ACPI CA Core Subsystem:
7351 Added a check for constructs of the form: Store (Local0, Local0)
7352 where Local0 is not initialized. Apparently, some BIOS
7353 programmers believe that this is a NOOP. Since this store doesn't
7354 do anything anyway, the new prototype behavior will ignore this
7355 error. This is a case where we can relax the strict checking in
7356 the interpreter in the name of compatibility.
7361 The AcpiSrc Source Conversion Utility has been released with the
7362 Linux package for the first time. This is the utility that is
7363 used to convert the ACPI CA base source code to the Linux version.
7365 (Both) Handle P_BLK lengths shorter than 6 more gracefully
7367 (Both) Move more headers to include/acpi, and delete an unused
7370 (Both) Move drivers/acpi/include directory to include/acpi
7372 (Both) Boot functions don't use cmdline, so don't pass it around
7374 (Both) Remove include of unused header (Adrian Bunk)
7376 (Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since
7378 former now also includes the latter, acpiphp.h only needs the one,
7381 (2.5) Make it possible to select method of bios restoring after S3
7382 resume. [=> no more ugly ifdefs] (Pavel Machek)
7384 (2.5) Make proc write interfaces work (Pavel Machek)
7386 (2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski)
7388 (2.5) Break out ACPI Perf code into its own module, under cpufreq
7391 (2.4) S4BIOS support (Ducrot Bruno)
7393 (2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio
7399 Added support to disassemble SSDT and PSDTs.
7401 Implemented support to obtain SSDTs from the Windows registry if
7405 ----------------------------------------
7406 09 January 2003. Summary of changes for version 20030109.
7408 1) ACPI CA Core Subsystem:
7410 Changed the behavior of the internal Buffer-to-String conversion
7411 function. The current ACPI specification states that the contents
7412 of the buffer are "converted to a string of two-character
7413 hexadecimal numbers, each separated by a space". Unfortunately,
7414 this definition is not backwards compatible with existing ACPI 1.0
7415 implementations (although the behavior was not defined in the ACPI
7416 1.0 specification). The new behavior simply copies data from the
7417 buffer to the string until a null character is found or the end of
7418 the buffer is reached. The new String object is always null
7419 terminated. This problem was seen during the generation of _BIF
7420 battery data where incorrect strings were returned for battery
7421 type, etc. This will also require an errata to the ACPI
7424 Renamed all instances of NATIVE_UINT and NATIVE_INT to
7425 ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively.
7427 Copyright in all module headers (both Linux and non-Linux) has be
7430 Code and Data Size: Current core subsystem library sizes are shown
7431 below. These are the code and data sizes for the acpica.lib
7432 produced by the Microsoft Visual C++ 6.0 compiler, and these
7433 values do not include any ACPI driver or OSPM code. The debug
7434 version of the code includes the debug output trace mechanism and
7435 has a much larger code and data size. Note that these values will
7436 vary depending on the efficiency of the compiler and the compiler
7437 options used during generation.
7440 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
7441 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
7443 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
7444 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
7449 Fixed an oops on module insertion/removal (Matthew Tippett)
7451 (2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante)
7453 (2.5) Replace pr_debug (Randy Dunlap)
7455 (2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski)
7457 (Both) Eliminate spawning of thread from timer callback, in favor
7460 (Both) Show Lid status in /proc (Zdenek OGAR Skalak)
7462 (Both) Added define for Fixed Function HW region (Matthew Wilcox)
7464 (Both) Add missing statics to button.c (Pavel Machek)
7466 Several changes have been made to the source code translation
7467 utility that generates the Linux Code in order to make the code
7470 All typedefs on structs and unions have been removed in keeping
7471 with the Linux coding style.
7473 Removed the non-Linux SourceSafe module revision number from each
7476 Completed major overhaul of symbols to be lowercased for linux.
7477 Doubled the number of symbols that are lowercased.
7479 Fixed a problem where identifiers within procedure headers and
7480 within quotes were not fully lower cased (they were left with a
7483 Some C macros whose only purpose is to allow the generation of 16-
7484 bit code are now completely removed in the Linux code, increasing
7485 readability and maintainability.
7487 ----------------------------------------
7489 12 December 2002. Summary of changes for version 20021212.
7492 1) ACPI CA Core Subsystem:
7494 Fixed a problem where the creation of a zero-length AML Buffer
7495 would cause a fault.
7497 Fixed a problem where a Buffer object that pointed to a static AML
7498 buffer (in an ACPI table) could inadvertently be deleted, causing
7501 Fixed a problem where a user buffer (passed in to the external
7502 ACPI CA interfaces) could be overwritten if the buffer was too
7503 small to complete the operation, causing memory corruption.
7505 Fixed a problem in the Buffer-to-String conversion code where a
7506 string of length one was always returned, regardless of the size
7507 of the input Buffer object.
7509 Removed the NATIVE_CHAR data type across the entire source due to
7510 lack of need and lack of consistent use.
7512 Code and Data Size: Current core subsystem library sizes are shown
7513 below. These are the code and data sizes for the acpica.lib
7514 produced by the Microsoft Visual C++ 6.0 compiler, and these
7515 values do not include any ACPI driver or OSPM code. The debug
7516 version of the code includes the debug output trace mechanism and
7517 has a much larger code and data size. Note that these values will
7518 vary depending on the efficiency of the compiler and the compiler
7519 options used during generation.
7522 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
7523 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
7525 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
7526 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
7529 ----------------------------------------
7530 05 December 2002. Summary of changes for version 20021205.
7532 1) ACPI CA Core Subsystem:
7534 Fixed a problem where a store to a String or Buffer object could
7535 cause corruption of the DSDT if the object type being stored was
7536 the same as the target object type and the length of the object
7537 being stored was equal to or smaller than the original (existing)
7538 target object. This was seen to cause corruption of battery _BIF
7539 buffers if the _BIF method modified the buffer on the fly.
7541 Fixed a problem where an internal error was generated if a control
7542 method invocation was used in an OperationRegion, Buffer, or
7543 Package declaration. This was caused by the deferred parsing of
7544 the control method and thus the deferred creation of the internal
7545 method object. The solution to this problem was to create the
7546 internal method object at the moment the method is encountered in
7547 the first pass - so that subsequent references to the method will
7548 able to obtain the required parameter count and thus properly
7549 parse the method invocation. This problem presented itself as an
7550 AE_AML_INTERNAL during the pass 1 parse phase during table load.
7552 Fixed a problem where the internal String object copy routine did
7553 not always allocate sufficient memory for the target String object
7554 and caused memory corruption. This problem was seen to cause
7555 "Allocation already present in list!" errors as memory allocation
7558 Implemented a new function for the evaluation of namespace objects
7559 that allows the specification of the allowable return object
7560 types. This simplifies a lot of code that checks for a return
7561 object of one or more specific objects returned from the
7562 evaluation (such as _STA, etc.) This may become and external
7563 function if it would be useful to ACPI-related drivers.
7565 Completed another round of prefixing #defines with "ACPI_" for
7568 Completed additional code restructuring to allow more modular
7569 linking for iASL compiler and AcpiExec. Several files were split
7570 creating new files. New files: nsparse.c dsinit.c evgpe.c
7572 Implemented an abort mechanism to terminate an executing control
7573 method via the AML debugger. This feature is useful for debugging
7574 control methods that depend (wait) for specific hardware
7577 Code and Data Size: Current core subsystem library sizes are shown
7578 below. These are the code and data sizes for the acpica.lib
7579 produced by the Microsoft Visual C++ 6.0 compiler, and these
7580 values do not include any ACPI driver or OSPM code. The debug
7581 version of the code includes the debug output trace mechanism and
7582 has a much larger code and data size. Note that these values will
7583 vary depending on the efficiency of the compiler and the compiler
7584 options used during generation.
7587 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
7588 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
7590 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
7591 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
7594 2) iASL Compiler/Disassembler
7596 Fixed a compiler code generation problem for "Interrupt" Resource
7597 Descriptors. If specified in the ASL, the optional "Resource
7598 Source Index" and "Resource Source" fields were not inserted into
7599 the correct location within the AML resource descriptor, creating
7600 an invalid descriptor.
7602 Fixed a disassembler problem for "Interrupt" resource descriptors.
7603 The optional "Resource Source Index" and "Resource Source" fields
7607 ----------------------------------------
7608 22 November 2002. Summary of changes for version 20021122.
7611 1) ACPI CA Core Subsystem:
7613 Fixed a reported problem where an object stored to a Method Local
7614 or Arg was not copied to a new object during the store - the
7615 object pointer was simply copied to the Local/Arg. This caused
7616 all subsequent operations on the Local/Arg to also affect the
7617 original source of the store operation.
7619 Fixed a problem where a store operation to a Method Local or Arg
7620 was not completed properly if the Local/Arg contained a reference
7621 (from RefOf) to a named field. The general-purpose store-to-
7622 namespace-node code is now used so that this case is handled
7625 Fixed a problem where the internal object copy routine would cause
7626 a protection fault if the object being copied was a Package and
7627 contained either 1) a NULL package element or 2) a nested sub-
7630 Fixed a problem with the GPE initialization that resulted from an
7631 ambiguity in the ACPI specification. One section of the
7632 specification states that both the address and length of the GPE
7633 block must be zero if the block is not supported. Another section
7634 implies that only the address need be zero if the block is not
7635 supported. The code has been changed so that both the address and
7636 the length must be non-zero to indicate a valid GPE block (i.e.,
7637 if either the address or the length is zero, the GPE block is
7640 Code and Data Size: Current core subsystem library sizes are shown
7641 below. These are the code and data sizes for the acpica.lib
7642 produced by the Microsoft Visual C++ 6.0 compiler, and these
7643 values do not include any ACPI driver or OSPM code. The debug
7644 version of the code includes the debug output trace mechanism and
7645 has a much larger code and data size. Note that these values will
7646 vary depending on the efficiency of the compiler and the compiler
7647 options used during generation.
7650 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
7651 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
7653 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
7654 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
7659 Cleaned up EC driver. Exported an external EC read/write
7660 interface. By going through this, other drivers (most notably
7661 sonypi) will be able to serialize access to the EC.
7664 3) iASL Compiler/Disassembler
7666 Implemented support to optionally generate include files for both
7667 ASM and C (the -i switch). This simplifies BIOS development by
7668 automatically creating include files that contain external
7669 declarations for the symbols that are created within the
7671 (optionally generated) ASM and C AML source files.
7674 ----------------------------------------
7675 15 November 2002. Summary of changes for version 20021115.
7677 1) ACPI CA Core Subsystem:
7679 Fixed a memory leak problem where an error during resolution of
7681 method arguments during a method invocation from another method
7682 failed to cleanup properly by deleting all successfully resolved
7685 Fixed a problem where the target of the Index() operator was not
7686 correctly constructed if the source object was a package. This
7687 problem has not been detected because the use of a target operand
7688 with Index() is very rare.
7690 Fixed a problem with the Index() operator where an attempt was
7691 made to delete the operand objects twice.
7693 Fixed a problem where an attempt was made to delete an operand
7694 twice during execution of the CondRefOf() operator if the target
7697 Implemented the first of perhaps several internal create object
7698 functions that create and initialize a specific object type. This
7699 consolidates duplicated code wherever the object is created, thus
7700 shrinking the size of the subsystem.
7702 Implemented improved debug/error messages for errors that occur
7703 during nested method invocations. All executing method pathnames
7704 are displayed (with the error) as the call stack is unwound - thus
7707 Fixed a problem introduced in the 10/02 release that caused
7708 premature deletion of a buffer object if a buffer was used as an
7709 ASL operand where an integer operand is required (Thus causing an
7710 implicit object conversion from Buffer to Integer.) The change in
7711 the 10/02 release was attempting to fix a memory leak (albeit
7714 Code and Data Size: Current core subsystem library sizes are shown
7715 below. These are the code and data sizes for the acpica.lib
7716 produced by the Microsoft Visual C++ 6.0 compiler, and these
7717 values do not include any ACPI driver or OSPM code. The debug
7718 version of the code includes the debug output trace mechanism and
7719 has a much larger code and data size. Note that these values will
7720 vary depending on the efficiency of the compiler and the compiler
7721 options used during generation.
7724 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
7725 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
7727 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
7728 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
7733 Changed the implementation of the ACPI semaphores to use down()
7734 instead of down_interruptable(). It is important that the
7735 execution of ACPI control methods not be interrupted by signals.
7736 Methods must run to completion, or the system may be left in an
7737 unknown/unstable state.
7739 Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set.
7743 3) iASL Compiler/Disassembler
7746 Changed the default location of output files. All output files
7747 are now placed in the current directory by default instead of in
7748 the directory of the source file. This change may affect some
7749 existing makefiles, but it brings the behavior of the compiler in
7750 line with other similar tools. The location of the output files
7751 can be overridden with the -p command line switch.
7754 ----------------------------------------
7755 11 November 2002. Summary of changes for version 20021111.
7758 0) ACPI Specification 2.0B is released and is now available at:
7759 http://www.acpi.info/index.html
7762 1) ACPI CA Core Subsystem:
7764 Implemented support for the ACPI 2.0 SMBus Operation Regions.
7765 This includes the early detection and handoff of the request to
7766 the SMBus region handler (avoiding all of the complex field
7767 support code), and support for the bidirectional return packet
7768 from an SMBus write operation. This paves the way for the
7769 development of SMBus drivers in each host operating system.
7771 Fixed a problem where the semaphore WAIT_FOREVER constant was
7772 defined as 32 bits, but must be 16 bits according to the ACPI
7773 specification. This had the side effect of causing ASL
7774 Mutex/Event timeouts even though the ASL code requested a wait
7775 forever. Changed all internal references to the ACPI timeout
7776 parameter to 16 bits to prevent future problems. Changed the name
7777 of WAIT_FOREVER to ACPI_WAIT_FOREVER.
7779 Code and Data Size: Current core subsystem library sizes are shown
7780 below. These are the code and data sizes for the acpica.lib
7781 produced by the Microsoft Visual C++ 6.0 compiler, and these
7782 values do not include any ACPI driver or OSPM code. The debug
7783 version of the code includes the debug output trace mechanism and
7784 has a much larger code and data size. Note that these values will
7785 vary depending on the efficiency of the compiler and the compiler
7786 options used during generation.
7789 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
7790 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
7792 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
7793 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
7798 Module loading/unloading fixes (John Cagle)
7801 3) iASL Compiler/Disassembler
7803 Added support for the SMBBlockProcessCall keyword (ACPI 2.0)
7805 Implemented support for the disassembly of all SMBus protocol
7806 keywords (SMBQuick, SMBWord, etc.)
7808 ----------------------------------------
7809 01 November 2002. Summary of changes for version 20021101.
7812 1) ACPI CA Core Subsystem:
7814 Fixed a problem where platforms that have a GPE1 block but no GPE0
7815 block were not handled correctly. This resulted in a "GPE
7816 overlap" error message. GPE0 is no longer required.
7818 Removed code added in the previous release that inserted nodes
7819 into the namespace in alphabetical order. This caused some side-
7820 effects on various machines. The root cause of the problem is
7821 still under investigation since in theory, the internal ordering
7822 of the namespace nodes should not matter.
7825 Enhanced error reporting for the case where a named object is not
7826 found during control method execution. The full ACPI namepath
7827 (name reference) of the object that was not found is displayed in
7830 Note: as a result of the overhaul of the namespace object types in
7831 the previous release, the namespace nodes for the predefined
7832 scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE
7833 instead of ACPI_TYPE_ANY. This simplifies the namespace
7834 management code but may affect code that walks the namespace tree
7835 looking for specific object types.
7837 Code and Data Size: Current core subsystem library sizes are shown
7838 below. These are the code and data sizes for the acpica.lib
7839 produced by the Microsoft Visual C++ 6.0 compiler, and these
7840 values do not include any ACPI driver or OSPM code. The debug
7841 version of the code includes the debug output trace mechanism and
7842 has a much larger code and data size. Note that these values will
7843 vary depending on the efficiency of the compiler and the compiler
7844 options used during generation.
7847 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
7848 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
7850 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
7851 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
7856 Fixed a problem introduced in the previous release where the
7857 Processor and Thermal objects were not recognized and installed in
7858 /proc. This was related to the scope type change described above.
7861 3) iASL Compiler/Disassembler
7863 Implemented the -g option to get all of the required ACPI tables
7864 from the registry and save them to files (Windows version of the
7865 compiler only.) The required tables are the FADT, FACS, and DSDT.
7867 Added ACPI table checksum validation during table disassembly in
7868 order to catch corrupted tables.
7871 ----------------------------------------
7872 22 October 2002. Summary of changes for version 20021022.
7874 1) ACPI CA Core Subsystem:
7876 Implemented a restriction on the Scope operator that the target
7877 must already exist in the namespace at the time the operator is
7878 encountered (during table load or method execution). In other
7879 words, forward references are not allowed and Scope() cannot
7880 create a new object. This changes the previous behavior where the
7881 interpreter would create the name if not found. This new behavior
7882 correctly enables the search-to-root algorithm during namespace
7883 lookup of the target name. Because of this upsearch, this fixes
7884 the known Compaq _SB_.OKEC problem and makes both the AML
7885 interpreter and iASL compiler compatible with other ACPI
7888 Completed a major overhaul of the internal ACPI object types for
7889 the ACPI Namespace and the associated operand objects. Many of
7890 these types had become obsolete with the introduction of the two-
7891 pass namespace load. This cleanup simplifies the code and makes
7892 the entire namespace load mechanism much clearer and easier to
7895 Improved debug output for tracking scope opening/closing to help
7896 diagnose scoping issues. The old scope name as well as the new
7897 scope name are displayed. Also improved error messages for
7898 problems with ASL Mutex objects and error messages for GPE
7901 Cleaned up the namespace dump code, removed obsolete code.
7903 All string output (for all namespace/object dumps) now uses the
7904 common ACPI string output procedure which handles escapes properly
7905 and does not emit non-printable characters.
7907 Fixed some issues with constants in the 64-bit version of the
7908 local C library (utclib.c)
7913 EC Driver: No longer attempts to acquire the Global Lock at
7917 3) iASL Compiler/Disassembler
7919 Implemented ACPI 2.0B grammar change that disallows all Type 1 and
7920 2 opcodes outside of a control method. This means that the
7921 "executable" operators (versus the "namespace" operators) cannot
7922 be used at the table level; they can only be used within a control
7925 Implemented the restriction on the Scope() operator where the
7926 target must already exist in the namespace at the time the
7927 operator is encountered (during ASL compilation). In other words,
7928 forward references are not allowed and Scope() cannot create a new
7929 object. This makes the iASL compiler compatible with other ACPI
7930 implementations and makes the Scope() implementation adhere to the
7933 Fixed a problem where namepath optimization for the Alias operator
7934 was optimizing the wrong path (of the two namepaths.) This caused
7935 a "Missing alias link" error message.
7937 Fixed a problem where an "unknown reserved name" warning could be
7938 incorrectly generated for names like "_SB" when the trailing
7939 underscore is not used in the original ASL.
7941 Fixed a problem where the reserved name check did not handle
7942 NamePaths with multiple NameSegs correctly. The first nameseg of
7943 the NamePath was examined instead of the last NameSeg.
7946 ----------------------------------------
7948 02 October 2002. Summary of changes for this release.
7951 1) ACPI CA Core Subsystem version 20021002:
7953 Fixed a problem where a store/copy of a string to an existing
7954 string did not always set the string length properly in the String
7957 Fixed a reported problem with the ToString operator where the
7958 behavior was identical to the ToHexString operator instead of just
7959 simply converting a raw buffer to a string data type.
7961 Fixed a problem where CopyObject and the other "explicit"
7962 conversion operators were not updating the internal namespace node
7963 type as part of the store operation.
7965 Fixed a memory leak during implicit source operand conversion
7966 where the original object was not deleted if it was converted to a
7967 new object of a different type.
7969 Enhanced error messages for all problems associated with namespace
7970 lookups. Common procedure generates and prints the lookup name as
7971 well as the formatted status.
7973 Completed implementation of a new design for the Alias support
7974 within the namespace. The existing design did not handle the case
7975 where a new object was assigned to one of the two names due to the
7976 use of an explicit conversion operator, resulting in the two names
7977 pointing to two different objects. The new design simply points
7978 the Alias name to the original name node - not to the object.
7979 This results in a level of indirection that must be handled in the
7980 name resolution mechanism.
7982 Code and Data Size: Current core subsystem library sizes are shown
7983 below. These are the code and data sizes for the acpica.lib
7984 produced by the Microsoft Visual C++ 6.0 compiler, and these
7985 values do not include any ACPI driver or OSPM code. The debug
7986 version of the code includes the debug output trace mechanism and
7987 has a larger code and data size. Note that these values will vary
7988 depending on the efficiency of the compiler and the compiler
7989 options used during generation.
7992 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
7993 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
7995 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
7996 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
8001 Initialize thermal driver's timer before it is used. (Knut
8004 Allow handling negative celsius values. (Kochi Takayoshi)
8006 Fix thermal management and make trip points. R/W (Pavel Machek)
8008 Fix /proc/acpi/sleep. (P. Christeas)
8010 IA64 fixes. (David Mosberger)
8012 Fix reversed logic in blacklist code. (Sergio Monteiro Basto)
8014 Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik
8018 3) iASL Compiler/Disassembler
8020 Clarified some warning/error messages.
8023 ----------------------------------------
8024 18 September 2002. Summary of changes for this release.
8027 1) ACPI CA Core Subsystem version 20020918:
8029 Fixed a reported problem with reference chaining (via the Index()
8030 and RefOf() operators) in the ObjectType() and SizeOf() operators.
8031 The definition of these operators includes the dereferencing of
8032 all chained references to return information on the base object.
8034 Fixed a problem with stores to indexed package elements - the
8035 existing code would not complete the store if an "implicit
8036 conversion" was not performed. In other words, if the existing
8037 object (package element) was to be replaced completely, the code
8038 didn't handle this case.
8040 Relaxed typechecking on the ASL "Scope" operator to allow the
8041 target name to refer to an object of type Integer, String, or
8042 Buffer, in addition to the scoping object types (Device,
8043 predefined Scopes, Processor, PowerResource, and ThermalZone.)
8044 This allows existing AML code that has workarounds for a bug in
8045 Windows to function properly. A warning is issued, however. This
8046 affects both the AML interpreter and the iASL compiler. Below is
8047 an example of this type of ASL code:
8053 Fixed some reported problems with 64-bit integer support in the
8054 local implementation of C library functions (clib.c)
8059 Use ACPI fix map region instead of IOAPIC region, since it is
8060 undefined in non-SMP.
8062 Ensure that the SCI has the proper polarity and trigger, even on
8063 systems that do not have an interrupt override entry in the MADT.
8065 2.5 big driver reorganization (Pat Mochel)
8067 Use early table mapping code from acpitable.c (Andi Kleen)
8069 New blacklist entries (Andi Kleen)
8071 Blacklist improvements. Split blacklist code out into a separate
8072 file. Move checking the blacklist to very early. Previously, we
8073 would use ACPI tables, and then halfway through init, check the
8074 blacklist -- too late. Now, it's early enough to completely fall-
8078 3) iASL Compiler/Disassembler version 20020918:
8080 Fixed a problem where the typechecking code didn't know that an
8081 alias could point to a method. In other words, aliases were not
8082 being dereferenced during typechecking.
8085 ----------------------------------------
8086 29 August 2002. Summary of changes for this release.
8088 1) ACPI CA Core Subsystem Version 20020829:
8090 If the target of a Scope() operator already exists, it must be an
8091 object type that actually opens a scope -- such as a Device,
8092 Method, Scope, etc. This is a fatal runtime error. Similar error
8093 check has been added to the iASL compiler also.
8095 Tightened up the namespace load to disallow multiple names in the
8096 same scope. This previously was allowed if both objects were of
8097 the same type. (i.e., a lookup was the same as entering a new
8103 Ensure that the ACPI interrupt has the proper trigger and
8106 local_irq_disable is extraneous. (Matthew Wilcox)
8108 Make "acpi=off" actually do what it says, and not use the ACPI
8109 interpreter *or* the tables.
8111 Added arch-neutral support for parsing SLIT and SRAT tables (Kochi
8115 3) iASL Compiler/Disassembler Version 20020829:
8117 Implemented namepath optimization for name declarations. For
8118 example, a declaration like "Method (\_SB_.ABCD)" would get
8119 optimized to "Method (ABCD)" if the declaration is within the
8120 \_SB_ scope. This optimization is in addition to the named
8121 reference path optimization first released in the previous
8122 version. This would seem to complete all possible optimizations
8123 for namepaths within the ASL/AML.
8125 If the target of a Scope() operator already exists, it must be an
8126 object type that actually opens a scope -- such as a Device,
8129 Implemented a check and warning for unreachable code in the same
8130 block below a Return() statement.
8132 Fixed a problem where the listing file was not generated if the
8133 compiler aborted if the maximum error count was exceeded (200).
8135 Fixed a problem where the typechecking of method return values was
8136 broken. This includes the check for a return value when the
8137 method is invoked as a TermArg (a return value is expected.)
8139 Fixed a reported problem where EOF conditions during a quoted
8140 string or comment caused a fault.
8143 ----------------------------------------
8144 15 August 2002. Summary of changes for this release.
8146 1) ACPI CA Core Subsystem Version 20020815:
8148 Fixed a reported problem where a Store to a method argument that
8149 contains a reference did not perform the indirect store correctly.
8150 This problem was created during the conversion to the new
8151 reference object model - the indirect store to a method argument
8152 code was not updated to reflect the new model.
8154 Reworked the ACPI mode change code to better conform to ACPI 2.0,
8155 handle corner cases, and improve code legibility (Kochi Takayoshi)
8157 Fixed a problem with the pathname parsing for the carat (^)
8158 prefix. The heavy use of the carat operator by the new namepath
8159 optimization in the iASL compiler uncovered a problem with the AML
8160 interpreter handling of this prefix. In the case where one or
8161 more carats precede a single nameseg, the nameseg was treated as
8162 standalone and the search rule (to root) was inadvertently
8163 applied. This could cause both the iASL compiler and the
8164 interpreter to find the wrong object or to miss the error that
8165 should occur if the object does not exist at that exact pathname.
8167 Found and fixed the problem where the HP Pavilion DSDT would not
8168 load. This was a relatively minor tweak to the table loading code
8169 (a problem caused by the unexpected encounter with a method
8170 invocation not within a control method), but it does not solve the
8171 overall issue of the execution of AML code at the table level.
8172 This investigation is still ongoing.
8174 Code and Data Size: Current core subsystem library sizes are shown
8175 below. These are the code and data sizes for the acpica.lib
8176 produced by the Microsoft Visual C++ 6.0 compiler, and these
8177 values do not include any ACPI driver or OSPM code. The debug
8178 version of the code includes the debug output trace mechanism and
8179 has a larger code and data size. Note that these values will vary
8180 depending on the efficiency of the compiler and the compiler
8181 options used during generation.
8184 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
8185 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
8187 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
8188 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
8193 Remove redundant slab.h include (Brad Hards)
8195 Fix several bugs in thermal.c (Herbert Nachtnebel)
8197 Make CONFIG_ACPI_BOOT work properly (Pavel Machek)
8199 Change acpi_system_suspend to use updated irq functions (Pavel
8202 Export acpi_get_firmware_table (Matthew Wilcox)
8204 Use proper root proc entry for ACPI (Kochi Takayoshi)
8206 Fix early-boot table parsing (Bjorn Helgaas)
8209 3) iASL Compiler/Disassembler
8211 Reworked the compiler options to make them more consistent and to
8212 use two-letter options where appropriate. We were running out of
8213 sensible letters. This may break some makefiles, so check the
8214 current options list by invoking the compiler with no parameters.
8216 Completed the design and implementation of the ASL namepath
8217 optimization option for the compiler. This option optimizes all
8218 references to named objects to the shortest possible path. The
8219 first attempt tries to utilize a single nameseg (4 characters) and
8220 the "search-to-root" algorithm used by the interpreter. If that
8221 cannot be used (because either the name is not in the search path
8222 or there is a conflict with another object with the same name),
8223 the pathname is optimized using the carat prefix (usually a
8224 shorter string than specifying the entire path from the root.)
8226 Implemented support to obtain the DSDT from the Windows registry
8227 (when the disassembly option is specified with no input file).
8228 Added this code as the implementation for AcpiOsTableOverride in
8229 the Windows OSL. Migrated the 16-bit code (used in the AcpiDump
8230 utility) to scan memory for the DSDT to the AcpiOsTableOverride
8231 function in the DOS OSL to make the disassembler truly OS
8234 Implemented a new option to disassemble and compile in one step.
8235 When used without an input filename, this option will grab the
8236 DSDT from the local machine, disassemble it, and compile it in one
8239 Added a warning message for invalid escapes (a backslash followed
8240 by any character other than the allowable escapes). This catches
8241 the quoted string error "\_SB_" (which should be "\\_SB_" ).
8243 Also, there are numerous instances in the ACPI specification where
8246 Added a compiler option to disable all optimizations. This is
8247 basically the "compatibility mode" because by using this option,
8248 the AML code will come out exactly the same as other ASL
8251 Added error messages for incorrectly ordered dependent resource
8252 functions. This includes: missing EndDependentFn macro at end of
8253 dependent resource list, nested dependent function macros (both
8254 start and end), and missing StartDependentFn macro. These are
8255 common errors that should be caught at compile time.
8257 Implemented _OSI support for the disassembler and compiler. _OSI
8258 must be included in the namespace for proper disassembly (because
8259 the disassembler must know the number of arguments.)
8261 Added an "optimization" message type that is optional (off by
8262 default). This message is used for all optimizations - including
8263 constant folding, integer optimization, and namepath optimization.
8265 ----------------------------------------
8266 25 July 2002. Summary of changes for this release.
8269 1) ACPI CA Core Subsystem Version 20020725:
8271 The AML Disassembler has been enhanced to produce compilable ASL
8272 code and has been integrated into the iASL compiler (see below) as
8273 well as the single-step disassembly for the AML debugger and the
8274 disassembler for the AcpiDump utility. All ACPI 2.0A opcodes,
8275 resource templates and macros are fully supported. The
8276 disassembler has been tested on over 30 different AML files,
8277 producing identical AML when the resulting disassembled ASL file
8278 is recompiled with the same ASL compiler.
8280 Modified the Resource Manager to allow zero interrupts and zero
8281 dma channels during the GetCurrentResources call. This was
8282 causing problems on some platforms.
8284 Added the AcpiOsRedirectOutput interface to the OSL to simplify
8285 output redirection for the AcpiOsPrintf and AcpiOsVprintf
8288 Code and Data Size: Current core subsystem library sizes are shown
8289 below. These are the code and data sizes for the acpica.lib
8290 produced by the Microsoft Visual C++ 6.0 compiler, and these
8291 values do not include any ACPI driver or OSPM code. The debug
8292 version of the code includes the debug output trace mechanism and
8293 has a larger code and data size. Note that these values will vary
8294 depending on the efficiency of the compiler and the compiler
8295 options used during generation.
8298 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
8299 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
8301 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
8302 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
8307 Fixed a panic in the EC driver (Dominik Brodowski)
8309 Implemented checksum of the R/XSDT itself during Linux table scan
8315 The AML disassembler is integrated into the compiler. The "-d"
8316 option invokes the disassembler to completely disassemble an
8317 input AML file, producing as output a text ASL file with the
8318 extension ".dsl" (to avoid name collisions with existing .asl
8319 source files.) A future enhancement will allow the disassembler
8320 to obtain the BIOS DSDT from the registry under Windows.
8322 Fixed a problem with the VendorShort and VendorLong resource
8323 descriptors where an invalid AML sequence was created.
8325 Implemented a fix for BufferData term in the ASL parser. It was
8326 inadvertently defined twice, allowing invalid syntax to pass and
8327 causing reduction conflicts.
8329 Fixed a problem where the Ones opcode could get converted to a
8330 value of zero if "Ones" was used where a byte, word or dword value
8331 was expected. The 64-bit value is now truncated to the correct
8332 size with the correct value.
8336 ----------------------------------------
8337 02 July 2002. Summary of changes for this release.
8340 1) ACPI CA Core Subsystem Version 20020702:
8342 The Table Manager code has been restructured to add several new
8343 features. Tables that are not required by the core subsystem
8344 (other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer
8345 validated in any way and are returned from AcpiGetFirmwareTable if
8346 requested. The AcpiOsTableOverride interface is now called for
8347 each table that is loaded by the subsystem in order to allow the
8348 host to override any table it chooses. Previously, only the DSDT
8349 could be overridden. Added one new files, tbrsdt.c and
8352 Fixed a problem with the conversion of internal package objects to
8353 external objects (when a package is returned from a control
8354 method.) The return buffer length was set to zero instead of the
8355 proper length of the package object.
8357 Fixed a reported problem with the use of the RefOf and DeRefOf
8358 operators when passing reference arguments to control methods. A
8359 new type of Reference object is used internally for references
8360 produced by the RefOf operator.
8362 Added additional error messages in the Resource Manager to explain
8363 AE_BAD_DATA errors when they occur during resource parsing.
8365 Split the AcpiEnableSubsystem into two primitives to enable a
8366 finer granularity initialization sequence. These two calls should
8367 be called in this order: AcpiEnableSubsystem (flags),
8368 AcpiInitializeObjects (flags). The flags parameter remains the
8374 Updated the ACPI utilities module to understand the new style of
8375 fully resolved package objects that are now returned from the core
8376 subsystem. This eliminates errors of the form:
8378 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT]
8379 acpi_utils-0430 [145] acpi_evaluate_reference:
8380 Invalid element in package (not a device reference)
8382 The method evaluation utility uses the new buffer allocation
8383 scheme instead of calling AcpiEvaluate Object twice.
8385 Added support for ECDT. This allows the use of the Embedded
8387 Controller before the namespace has been fully initialized, which
8388 is necessary for ACPI 2.0 support, and for some laptops to
8389 initialize properly. (Laptops using ECDT are still rare, so only
8390 limited testing was performed of the added functionality.)
8392 Fixed memory leaks in the EC driver.
8394 Eliminated a brittle code structure in acpi_bus_init().
8396 Eliminated the acpi_evaluate() helper function in utils.c. It is
8397 no longer needed since acpi_evaluate_object can optionally
8398 allocate memory for the return object.
8400 Implemented fix for keyboard hang when getting battery readings on
8401 some systems (Stephen White)
8403 PCI IRQ routing update (Dominik Brodowski)
8405 Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC
8408 ----------------------------------------
8409 11 June 2002. Summary of changes for this release.
8412 1) ACPI CA Core Subsystem Version 20020611:
8414 Fixed a reported problem where constants such as Zero and One
8415 appearing within _PRT packages were not handled correctly within
8416 the resource manager code. Originally reported against the ASL
8417 compiler because the code generator now optimizes integers to
8418 their minimal AML representation (i.e. AML constants if possible.)
8419 The _PRT code now handles all AML constant opcodes correctly
8420 (Zero, One, Ones, Revision).
8422 Fixed a problem with the Concatenate operator in the AML
8423 interpreter where a buffer result object was incorrectly marked as
8424 not fully evaluated, causing a run-time error of AE_AML_INTERNAL.
8426 All package sub-objects are now fully resolved before they are
8427 returned from the external ACPI interfaces. This means that name
8428 strings are resolved to object handles, and constant operators
8429 (Zero, One, Ones, Revision) are resolved to Integers.
8431 Implemented immediate resolution of the AML Constant opcodes
8432 (Zero, One, Ones, Revision) to Integer objects upon detection
8433 within the AML stream. This has simplified and reduced the
8434 generated code size of the subsystem by eliminating about 10
8435 switch statements for these constants (which previously were
8436 contained in Reference objects.) The complicating issues are that
8437 the Zero opcode is used as a "placeholder" for unspecified
8438 optional target operands and stores to constants are defined to be
8441 Code and Data Size: Current core subsystem library sizes are shown
8442 below. These are the code and data sizes for the acpica.lib
8443 produced by the Microsoft Visual C++ 6.0 compiler, and these
8444 values do not include any ACPI driver or OSPM code. The debug
8445 version of the code includes the debug output trace mechanism and
8446 has a larger code and data size. Note that these values will vary
8447 depending on the efficiency of the compiler and the compiler
8448 options used during generation.
8451 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
8452 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
8454 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
8455 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
8461 Added preliminary support for obtaining _TRA data for PCI root
8462 bridges (Bjorn Helgaas).
8465 3) iASL Compiler Version X2046:
8467 Fixed a problem where the "_DDN" reserved name was defined to be a
8468 control method with one argument. There are no arguments, and
8469 _DDN does not have to be a control method.
8471 Fixed a problem with the Linux version of the compiler where the
8472 source lines printed with error messages were the wrong lines.
8473 This turned out to be the "LF versus CR/LF" difference between
8474 Windows and Unix. This appears to be the longstanding issue
8475 concerning listing output and error messages.
8477 Fixed a problem with the Linux version of compiler where opcode
8478 names within error messages were wrong. This was caused by a
8479 slight difference in the output of the Flex tool on Linux versus
8482 Fixed a problem with the Linux compiler where the hex output files
8483 contained some garbage data caused by an internal buffer overrun.
8486 ----------------------------------------
8487 17 May 2002. Summary of changes for this release.
8490 1) ACPI CA Core Subsystem Version 20020517:
8492 Implemented a workaround to an BIOS bug discovered on the HP
8493 OmniBook where the FADT revision number and the table size are
8494 inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new
8495 behavior is to fallback to using only the ACPI 1.0 fields of the
8496 FADT if the table is too small to be a ACPI 2.0 table as claimed
8497 by the revision number. Although this is a BIOS bug, this is a
8498 case where the workaround is simple enough and with no side
8499 effects, so it seemed prudent to add it. A warning message is
8502 Implemented minimum size checks for the fixed-length ACPI tables -
8503 - the FADT and FACS, as well as consistency checks between the
8504 revision number and the table size.
8506 Fixed a reported problem in the table override support where the
8507 new table pointer was incorrectly treated as a physical address
8508 instead of a logical address.
8510 Eliminated the use of the AE_AML_ERROR exception and replaced it
8511 with more descriptive codes.
8513 Fixed a problem where an exception would occur if an ASL Field was
8514 defined with no named Field Units underneath it (used by some
8517 Code and Data Size: Current core subsystem library sizes are shown
8518 below. These are the code and data sizes for the acpica.lib
8519 produced by the Microsoft Visual C++ 6.0 compiler, and these
8520 values do not include any ACPI driver or OSPM code. The debug
8521 version of the code includes the debug output trace mechanism and
8522 has a larger code and data size. Note that these values will vary
8523 depending on the efficiency of the compiler and the compiler
8524 options used during generation.
8527 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
8528 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
8530 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
8531 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
8537 Much work done on ACPI init (MADT and PCI IRQ routing support).
8538 (Paul D. and Dominik Brodowski)
8540 Fix PCI IRQ-related panic on boot (Sam Revitch)
8542 Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno)
8544 Fix "MHz" typo (Dominik Brodowski)
8546 Fix RTC year 2000 issue (Dominik Brodowski)
8548 Preclude multiple button proc entries (Eric Brunet)
8550 Moved arch-specific code out of include/platform/aclinux.h
8552 3) iASL Compiler Version X2044:
8554 Implemented error checking for the string used in the EISAID macro
8555 (Usually used in the definition of the _HID object.) The code now
8556 strictly enforces the PnP format - exactly 7 characters, 3
8557 uppercase letters and 4 hex digits.
8559 If a raw string is used in the definition of the _HID object
8560 (instead of the EISAID macro), the string must contain all
8561 alphanumeric characters (e.g., "*PNP0011" is not allowed because
8564 Implemented checking for invalid use of ACPI reserved names for
8565 most of the name creation operators (Name, Device, Event, Mutex,
8566 OperationRegion, PowerResource, Processor, and ThermalZone.)
8567 Previously, this check was only performed for control methods.
8569 Implemented an additional check on the Name operator to emit an
8570 error if a reserved name that must be implemented in ASL as a
8571 control method is used. We know that a reserved name must be a
8572 method if it is defined with input arguments.
8574 The warning emitted when a namespace object reference is not found
8575 during the cross reference phase has been changed into an error.
8576 The "External" directive should be used for names defined in other
8580 4) Tools and Utilities
8582 The 16-bit tools (adump16 and aexec16) have been regenerated and
8585 Fixed a problem with the output of both acpidump and adump16 where
8586 the indentation of closing parentheses and brackets was not
8588 aligned properly with the parent block.
8591 ----------------------------------------
8592 03 May 2002. Summary of changes for this release.
8595 1) ACPI CA Core Subsystem Version 20020503:
8597 Added support a new OSL interface that allows the host operating
8599 system software to override the DSDT found in the firmware -
8600 AcpiOsTableOverride. With this interface, the OSL can examine the
8601 version of the firmware DSDT and replace it with a different one
8604 Added new external interfaces for accessing ACPI registers from
8605 device drivers and other system software - AcpiGetRegister and
8606 AcpiSetRegister. This was simply an externalization of the
8607 existing AcpiHwBitRegister interfaces.
8609 Fixed a regression introduced in the previous build where the
8610 ASL/AML CreateField operator always returned an error,
8611 "destination must be a NS Node".
8613 Extended the maximum time (before failure) to successfully enable
8614 ACPI mode to 3 seconds.
8616 Code and Data Size: Current core subsystem library sizes are shown
8617 below. These are the code and data sizes for the acpica.lib
8618 produced by the Microsoft Visual C++ 6.0 compiler, and these
8619 values do not include any ACPI driver or OSPM code. The debug
8620 version of the code includes the debug output trace mechanism and
8621 has a larger code and data size. Note that these values will vary
8622 depending on the efficiency of the compiler and the compiler
8623 options used during generation.
8626 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
8627 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
8629 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
8630 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
8635 Enhanced ACPI init code for SMP. We are now fully MPS and $PIR-
8636 free. While 3 out of 4 of our in-house systems work fine, the last
8637 one still hangs when testing the LAPIC timer.
8639 Renamed many files in 2.5 kernel release to omit "acpi_" from the
8642 Added warning on boot for Presario 711FR.
8644 Sleep improvements (Pavel Machek)
8646 ACPI can now be built without CONFIG_PCI enabled.
8648 IA64: Fixed memory map functions (JI Lee)
8651 3) iASL Compiler Version X2043:
8653 Added support to allow the compiler to be integrated into the MS
8654 VC++ development environment for one-button compilation of single
8655 files or entire projects -- with error-to-source-line mapping.
8657 Implemented support for compile-time constant folding for the
8658 Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0
8659 specification. This allows the ASL writer to use expressions
8660 instead of Integer/Buffer/String constants in terms that must
8661 evaluate to constants at compile time and will also simplify the
8662 emitted AML in any such sub-expressions that can be folded
8663 (evaluated at compile-time.) This increases the size of the
8664 compiler significantly because a portion of the ACPI CA AML
8665 interpreter is included within the compiler in order to pre-
8666 evaluate constant expressions.
8669 Fixed a problem with the "Unicode" ASL macro that caused the
8670 compiler to fault. (This macro is used in conjunction with the
8671 _STR reserved name.)
8673 Implemented an AML opcode optimization to use the Zero, One, and
8674 Ones opcodes where possible to further reduce the size of integer
8675 constants and thus reduce the overall size of the generated AML
8678 Implemented error checking for new reserved terms for ACPI version
8681 Implemented the -qr option to display the current list of ACPI
8682 reserved names known to the compiler.
8684 Implemented the -qc option to display the current list of ASL
8685 operators that are allowed within constant expressions and can
8686 therefore be folded at compile time if the operands are constants.
8691 Updated the Programmer's Reference for new interfaces, data types,
8692 and memory allocation model options.
8694 Updated the iASL Compiler User Reference to apply new format and
8695 add information about new features and options.
8697 ----------------------------------------
8698 19 April 2002. Summary of changes for this release.
8700 1) ACPI CA Core Subsystem Version 20020419:
8702 The source code base for the Core Subsystem has been completely
8703 cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit
8704 versions. The Lint option files used are included in the
8705 /acpi/generate/lint directory.
8707 Implemented enhanced status/error checking across the entire
8708 Hardware manager subsystem. Any hardware errors (reported from
8709 the OSL) are now bubbled up and will abort a running control
8713 Fixed a problem where the per-ACPI-table integer width (32 or 64)
8714 was stored only with control method nodes, causing a fault when
8715 non-control method code was executed during table loading. The
8716 solution implemented uses a global variable to indicate table
8717 width across the entire ACPI subsystem. Therefore, ACPI CA does
8718 not support mixed integer widths across different ACPI tables
8721 Fixed a problem where NULL extended fields (X fields) in an ACPI
8722 2.0 ACPI FADT caused the table load to fail. Although the
8723 existing ACPI specification is a bit fuzzy on this topic, the new
8724 behavior is to fall back on a ACPI 1.0 field if the corresponding
8725 ACPI 2.0 X field is zero (even though the table revision indicates
8726 a full ACPI 2.0 table.) The ACPI specification will be updated to
8729 Fixed a problem with the SystemMemory operation region handler
8730 where memory was always accessed byte-wise even if the AML-
8731 specified access width was larger than a byte. This caused
8732 problems on systems with memory-mapped I/O. Memory is now
8733 accessed with the width specified. On systems that do not support
8734 non-aligned transfers, a check is made to guarantee proper address
8735 alignment before proceeding in order to avoid an AML-caused
8736 alignment fault within the kernel.
8739 Fixed a problem with the ExtendedIrq resource where only one byte
8740 of the 4-byte Irq field was extracted.
8742 Fixed the AcpiExDigitsNeeded() procedure to support _UID. This
8743 function was out of date and required a rewrite.
8745 Code and Data Size: Current core subsystem library sizes are shown
8746 below. These are the code and data sizes for the acpica.lib
8747 produced by the Microsoft Visual C++ 6.0 compiler, and these
8748 values do not include any ACPI driver or OSPM code. The debug
8749 version of the code includes the debug output trace mechanism and
8750 has a larger code and data size. Note that these values will vary
8751 depending on the efficiency of the compiler and the compiler
8752 options used during generation.
8755 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
8756 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
8758 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
8759 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
8764 PCI IRQ routing fixes (Dominik Brodowski)
8767 3) iASL Compiler Version X2042:
8769 Implemented an additional compile-time error check for a field
8770 unit whose size + minimum access width would cause a run-time
8771 access beyond the end-of-region. Previously, only the field size
8774 The Core subsystem and iASL compiler now share a common parse
8775 object in preparation for compile-time evaluation of the type
8776 3/4/5 ASL operators.
8779 ----------------------------------------
8780 Summary of changes for this release: 03_29_02
8782 1) ACPI CA Core Subsystem Version 20020329:
8784 Implemented support for late evaluation of TermArg operands to
8785 Buffer and Package objects. This allows complex expressions to be
8786 used in the declarations of these object types.
8788 Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI
8789 1.0, if the field was larger than 32 bits, it was returned as a
8790 buffer - otherwise it was returned as an integer. In ACPI 2.0,
8791 the field is returned as a buffer only if the field is larger than
8792 64 bits. The TableRevision is now considered when making this
8793 conversion to avoid incompatibility with existing ASL code.
8795 Implemented logical addressing for AcpiOsGetRootPointer. This
8796 allows an RSDP with either a logical or physical address. With
8797 this support, the host OS can now override all ACPI tables with
8798 one logical RSDP. Includes implementation of "typed" pointer
8799 support to allow a common data type for both physical and logical
8800 pointers internally. This required a change to the
8801 AcpiOsGetRootPointer interface.
8803 Implemented the use of ACPI 2.0 Generic Address Structures for all
8804 GPE, Fixed Event, and PM Timer I/O. This allows the use of memory
8805 mapped I/O for these ACPI features.
8807 Initialization now ignores not only non-required tables (All
8808 tables other than the FADT, FACS, DSDT, and SSDTs), but also does
8809 not validate the table headers of unrecognized tables.
8811 Fixed a problem where a notify handler could only be
8812 installed/removed on an object of type Device. All "notify"
8814 objects are now supported -- Devices, Processor, Power, and
8817 Removed most verbosity from the ACPI_DB_INFO debug level. Only
8818 critical information is returned when this debug level is enabled.
8820 Code and Data Size: Current core subsystem library sizes are shown
8821 below. These are the code and data sizes for the acpica.lib
8822 produced by the Microsoft Visual C++ 6.0 compiler, and these
8823 values do not include any ACPI driver or OSPM code. The debug
8824 version of the code includes the debug output trace mechanism and
8825 has a larger code and data size. Note that these values will vary
8826 depending on the efficiency of the compiler and the compiler
8827 options used during generation.
8830 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
8831 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
8833 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
8834 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
8839 The processor driver (acpi_processor.c) now fully supports ACPI
8840 2.0-based processor performance control (e.g. Intel(R)
8841 SpeedStep(TM) technology) Note that older laptops that only have
8842 the Intel "applet" interface are not supported through this. The
8843 'limit' and 'performance' interface (/proc) are fully functional.
8844 [Note that basic policy for controlling performance state
8845 transitions will be included in the next version of ospmd.] The
8846 idle handler was modified to more aggressively use C2, and PIIX4
8847 errata handling underwent a complete overhaul (big thanks to
8850 Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR-
8851 based devices in the ACPI namespace are now dynamically bound
8852 (associated) with their PCI counterparts (e.g. PCI1->01:00.0).
8853 This allows, among other things, ACPI to resolve bus numbers for
8854 subordinate PCI bridges.
8856 Enhanced PCI IRQ routing to get the proper bus number for _PRT
8857 entries defined underneath PCI bridges.
8859 Added IBM 600E to bad bios list due to invalid _ADR value for
8860 PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing.
8862 In the process of adding full MADT support (e.g. IOAPIC) for IA32
8863 (acpi.c, mpparse.c) -- stay tuned.
8865 Added back visual differentiation between fixed-feature and
8866 control-method buttons in dmesg. Buttons are also subtyped (e.g.
8867 button/power/PWRF) to simplify button identification.
8869 We no longer use -Wno-unused when compiling debug. Please ignore
8870 any "_THIS_MODULE defined but not used" messages.
8872 Can now shut down the system using "magic sysrq" key.
8875 3) iASL Compiler version 2041:
8877 Fixed a problem where conversion errors for hex/octal/decimal
8878 constants were not reported.
8880 Implemented a fix for the General Register template Address field.
8881 This field was 8 bits when it should be 64.
8883 Fixed a problem where errors/warnings were no longer being emitted
8884 within the listing output file.
8886 Implemented the ACPI 2.0A restriction on ACPI Table Signatures to
8887 exactly 4 characters, alphanumeric only.
8892 ----------------------------------------
8893 Summary of changes for this release: 03_08_02
8896 1) ACPI CA Core Subsystem Version 20020308:
8898 Fixed a problem with AML Fields where the use of the "AccessAny"
8899 keyword could cause an interpreter error due to attempting to read
8900 or write beyond the end of the parent Operation Region.
8902 Fixed a problem in the SystemMemory Operation Region handler where
8903 an attempt was made to map memory beyond the end of the region.
8904 This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY"
8905 errors on some Linux systems.
8907 Fixed a problem where the interpreter/namespace "search to root"
8908 algorithm was not functioning for some object types. Relaxed the
8909 internal restriction on the search to allow upsearches for all
8910 external object types as well as most internal types.
8915 We now use safe_halt() macro versus individual calls to sti | hlt.
8917 Writing to the processor limit interface should now work. "echo 1"
8918 will increase the limit, 2 will decrease, and 0 will reset to the
8925 Fixed segfault on Linux version.
8928 ----------------------------------------
8929 Summary of changes for this release: 02_25_02
8931 1) ACPI CA Core Subsystem:
8934 Fixed a problem where the GPE bit masks were not initialized
8935 properly, causing erratic GPE behavior.
8937 Implemented limited support for multiple calling conventions. The
8938 code can be generated with either the VPL (variable parameter
8939 list, or "C") convention, or the FPL (fixed parameter list, or
8940 "Pascal") convention. The core subsystem is about 3.4% smaller
8941 when generated with FPL.
8946 Re-add some /proc/acpi/event functionality that was lost during
8949 Resolved issue with /proc events for fixed-feature buttons showing
8950 up as the system device.
8952 Fixed checks on C2/C3 latencies to be inclusive of maximum values.
8954 Replaced AE_ERRORs in acpi_osl.c with more specific error codes.
8956 Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi"
8958 Fixed limit interface & usage to fix bugs with passive cooling
8961 Restructured PRT support.
8964 ----------------------------------------
8965 Summary of changes for this label: 02_14_02
8968 1) ACPI CA Core Subsystem:
8970 Implemented support in AcpiLoadTable to allow loading of FACS and
8973 Suport for the now-obsolete interim 0.71 64-bit ACPI tables has
8974 been removed. All 64-bit platforms should be migrated to the ACPI
8975 2.0 tables. The actbl71.h header has been removed from the source
8978 All C macros defined within the subsystem have been prefixed with
8979 "ACPI_" to avoid collision with other system include files.
8981 Removed the return value for the two AcpiOsPrint interfaces, since
8982 it is never used and causes lint warnings for ignoring the return
8985 Added error checking to all internal mutex acquire and release
8986 calls. Although a failure from one of these interfaces is
8987 probably a fatal system error, these checks will cause the
8988 immediate abort of the currently executing method or interface.
8990 Fixed a problem where the AcpiSetCurrentResources interface could
8991 fault. This was a side effect of the deployment of the new memory
8994 Fixed a couple of problems with the Global Lock support introduced
8995 in the last major build. The "common" (1.0/2.0) internal FACS was
8996 being overwritten with the FACS signature and clobbering the
8997 Global Lock pointer. Also, the actual firmware FACS was being
8998 unmapped after construction of the "common" FACS, preventing
8999 access to the actual Global Lock field within it. The "common"
9000 internal FACS is no longer installed as an actual ACPI table; it
9001 is used simply as a global.
9003 Code and Data Size: Current core subsystem library sizes are shown
9004 below. These are the code and data sizes for the acpica.lib
9005 produced by the Microsoft Visual C++ 6.0 compiler, and these
9006 values do not include any ACPI driver or OSPM code. The debug
9007 version of the code includes the debug output trace mechanism and
9008 has a larger code and data size. Note that these values will vary
9009 depending on the efficiency of the compiler and the compiler
9010 options used during generation.
9012 Previous Release (02_07_01)
9013 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
9014 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
9016 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
9017 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
9022 Updated Linux-specific code for core macro and OSL interface
9023 changes described above.
9025 Improved /proc/acpi/event. It now can be opened only once and has
9026 proper poll functionality.
9028 Fixed and restructured power management (acpi_bus).
9030 Only create /proc "view by type" when devices of that class exist.
9032 Fixed "charging/discharging" bug (and others) in acpi_battery.
9034 Improved thermal zone code.
9037 3) ASL Compiler, version X2039:
9040 Implemented the new compiler restriction on ASL String hex/octal
9041 escapes to non-null, ASCII values. An error results if an invalid
9042 value is used. (This will require an ACPI 2.0 specification
9045 AML object labels that are output to the optional C and ASM source
9046 are now prefixed with both the ACPI table signature and table ID
9047 to help guarantee uniqueness within a large BIOS project.
9050 ----------------------------------------
9051 Summary of changes for this label: 02_01_02
9053 1) ACPI CA Core Subsystem:
9055 ACPI 2.0 support is complete in the entire Core Subsystem and the
9056 ASL compiler. All new ACPI 2.0 operators are implemented and all
9057 other changes for ACPI 2.0 support are complete. With
9058 simultaneous code and data optimizations throughout the subsystem,
9059 ACPI 2.0 support has been implemented with almost no additional
9060 cost in terms of code and data size.
9062 Implemented a new mechanism for allocation of return buffers. If
9063 the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will
9064 be allocated on behalf of the caller. Consolidated all return
9065 buffer validation and allocation to a common procedure. Return
9066 buffers will be allocated via the primary OSL allocation interface
9067 since it appears that a separate pool is not needed by most users.
9068 If a separate pool is required for these buffers, the caller can
9069 still use the original mechanism and pre-allocate the buffer(s).
9071 Implemented support for string operands within the DerefOf
9074 Restructured the Hardware and Event managers to be table driven,
9075 simplifying the source code and reducing the amount of generated
9078 Split the common read/write low-level ACPI register bitfield
9079 procedure into a separate read and write, simplifying the code
9082 Obsoleted the AcpiOsCallocate OSL interface. This interface was
9083 used only a handful of times and didn't have enough critical mass
9084 for a separate interface. Replaced with a common calloc procedure
9087 Fixed a reported problem with the GPE number mapping mechanism
9088 that allows GPE1 numbers to be non-contiguous with GPE0.
9089 Reorganized the GPE information and shrunk a large array that was
9090 originally large enough to hold info for all possible GPEs (256)
9091 to simply large enough to hold all GPEs up to the largest GPE
9092 number on the machine.
9094 Fixed a reported problem with resource structure alignment on 64-
9097 Changed the AcpiEnableEvent and AcpiDisableEvent external
9098 interfaces to not require any flags for the common case of
9099 enabling/disabling a GPE.
9101 Implemented support to allow a "Notify" on a Processor object.
9103 Most TBDs in comments within the source code have been resolved
9107 Fixed a problem in the interpreter where a standalone parent
9108 prefix (^) was not handled correctly in the interpreter and
9111 Removed obsolete and unnecessary GPE save/restore code.
9113 Implemented Field support in the ASL Load operator. This allows a
9114 table to be loaded from a named field, in addition to loading a
9115 table directly from an Operation Region.
9117 Implemented timeout and handle support in the external Global Lock
9120 Fixed a problem in the AcpiDump utility where pathnames were no
9121 longer being generated correctly during the dump of named objects.
9123 Modified the AML debugger to give a full display of if/while
9124 predicates instead of just one AML opcode at a time. (The
9125 predicate can have several nested ASL statements.) The old method
9126 was confusing during single stepping.
9128 Code and Data Size: Current core subsystem library sizes are shown
9129 below. These are the code and data sizes for the acpica.lib
9130 produced by the Microsoft Visual C++ 6.0 compiler, and these
9131 values do not include any ACPI driver or OSPM code. The debug
9132 version of the code includes the debug output trace mechanism and
9133 has a larger code and data size. Note that these values will vary
9134 depending on the efficiency of the compiler and the compiler
9135 options used during generation.
9137 Previous Release (12_18_01)
9138 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
9139 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
9141 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
9142 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
9146 Implemented fix for PIIX reverse throttling errata (Processor
9149 Added new Limit interface (Processor and Thermal drivers)
9151 New thermal policy (Thermal driver)
9153 Many updates to /proc
9155 Battery "low" event support (Battery driver)
9157 Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers)
9159 IA32 - IA64 initialization unification, no longer experimental
9161 Menuconfig options redesigned
9163 3) ASL Compiler, version X2037:
9165 Implemented several new output features to simplify integration of
9166 AML code into firmware: 1) Output the AML in C source code with
9167 labels for each named ASL object. The original ASL source code
9168 is interleaved as C comments. 2) Output the AML in ASM source code
9169 with labels and interleaved ASL source. 3) Output the AML in
9170 raw hex table form, in either C or ASM.
9172 Implemented support for optional string parameters to the
9175 Completed support for embedded escape sequences within string
9176 literals. The compiler now supports all single character escapes
9177 as well as the Octal and Hex escapes. Note: the insertion of a
9178 null byte into a string literal (via the hex/octal escape) causes
9179 the string to be immediately terminated. A warning is issued.
9181 Fixed a problem where incorrect AML was generated for the case
9182 where an ASL namepath consists of a single parent prefix (
9184 ) with no trailing name segments.
9186 The compiler has been successfully generated with a 64-bit C
9192 ----------------------------------------
9193 Summary of changes for this label: 12_18_01
9197 Enhanced blacklist with reason and severity fields. Any table's
9198 signature may now be used to identify a blacklisted system.
9200 Call _PIC control method to inform the firmware which interrupt
9201 model the OS is using. Turn on any disabled link devices.
9203 Cleaned up busmgr /proc error handling (Andreas Dilger)
9205 2) ACPI CA Core Subsystem:
9207 Implemented ACPI 2.0 semantics for the "Break" operator (Exit from
9210 Completed implementation of the ACPI 2.0 "Continue",
9211 "ConcatenateResTemplate", "DataTableRegion", and "LoadTable"
9212 operators. All new ACPI 2.0 operators are now implemented in both
9213 the ASL compiler and the AML interpreter. The only remaining ACPI
9214 2.0 task is support for the String data type in the DerefOf
9215 operator. Fixed a problem with AcquireMutex where the status code
9216 was lost if the caller had to actually wait for the mutex.
9218 Increased the maximum ASL Field size from 64K bits to 4G bits.
9220 Completed implementation of the external Global Lock interfaces --
9221 AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and
9222 Handler parameters were added.
9224 Completed another pass at removing warnings and issues when
9225 compiling with 64-bit compilers. The code now compiles cleanly
9226 with the Intel 64-bit C/C++ compiler. Most notably, the pointer
9227 add and subtract (diff) macros have changed considerably.
9230 Created and deployed a new ACPI_SIZE type that is 64-bits wide on
9231 64-bit platforms, 32-bits on all others. This type is used
9232 wherever memory allocation and/or the C sizeof() operator is used,
9233 and affects the OSL memory allocation interfaces AcpiOsAllocate
9234 and AcpiOsCallocate.
9236 Implemented sticky user breakpoints in the AML debugger.
9238 Code and Data Size: Current core subsystem library sizes are shown
9239 below. These are the code and data sizes for the acpica.lib
9240 produced by the Microsoft Visual C++ 6.0 compiler, and these
9241 values do not include any ACPI driver or OSPM code. The debug
9242 version of the code includes the debug output trace mechanism and
9243 has a larger code and data size. Note that these values will vary
9244 depending on the efficiency of the compiler and the compiler
9245 options used during generation.
9247 Previous Release (12_05_01)
9248 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
9249 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
9251 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
9252 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
9254 3) ASL Compiler, version X2034:
9256 Now checks for (and generates an error if detected) the use of a
9257 Break or Continue statement without an enclosing While statement.
9260 Successfully generated the compiler with the Intel 64-bit C
9263 ----------------------------------------
9264 Summary of changes for this label: 12_05_01
9266 1) ACPI CA Core Subsystem:
9268 The ACPI 2.0 CopyObject operator is fully implemented. This
9269 operator creates a new copy of an object (and is also used to
9270 bypass the "implicit conversion" mechanism of the Store operator.)
9272 The ACPI 2.0 semantics for the SizeOf operator are fully
9273 implemented. The change is that performing a SizeOf on a
9274 reference object causes an automatic dereference of the object to
9275 tha actual value before the size is evaluated. This behavior was
9276 undefined in ACPI 1.0.
9278 The ACPI 2.0 semantics for the Extended IRQ resource descriptor
9279 have been implemented. The interrupt polarity and mode are now
9282 Fixed a problem where ASL Constants (Zero, One, Ones, Revision)
9283 appearing in Package objects were not properly converted to
9284 integers when the internal Package was converted to an external
9285 object (via the AcpiEvaluateObject interface.)
9287 Fixed a problem with the namespace object deletion mechanism for
9288 objects created by control methods. There were two parts to this
9289 problem: 1) Objects created during the initialization phase method
9290 parse were not being deleted, and 2) The object owner ID mechanism
9291 to track objects was broken.
9293 Fixed a problem where the use of the ASL Scope operator within a
9294 control method would result in an invalid opcode exception.
9296 Fixed a problem introduced in the previous label where the buffer
9297 length required for the _PRT structure was not being returned
9300 Code and Data Size: Current core subsystem library sizes are shown
9301 below. These are the code and data sizes for the acpica.lib
9302 produced by the Microsoft Visual C++ 6.0 compiler, and these
9303 values do not include any ACPI driver or OSPM code. The debug
9304 version of the code includes the debug output trace mechanism and
9305 has a larger code and data size. Note that these values will vary
9306 depending on the efficiency of the compiler and the compiler
9307 options used during generation.
9309 Previous Release (11_20_01)
9310 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
9311 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
9314 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
9315 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
9319 Updated all files to apply cleanly against 2.4.16.
9321 Added basic PCI Interrupt Routing Table (PRT) support for IA32
9322 (acpi_pci.c), and unified the PRT code for IA32 and IA64. This
9323 version supports both static and dyanmic PRT entries, but dynamic
9324 entries are treated as if they were static (not yet
9325 reconfigurable). Architecture- specific code to use this data is
9326 absent on IA32 but should be available shortly.
9328 Changed the initialization sequence to start the ACPI interpreter
9329 (acpi_init) prior to initialization of the PCI driver (pci_init)
9330 in init/main.c. This ordering is required to support PRT and
9331 facilitate other (future) enhancement. A side effect is that the
9332 ACPI bus driver and certain device drivers can no longer be loaded
9335 Modified the 'make menuconfig' options to allow PCI Interrupt
9336 Routing support to be included without the ACPI Bus and other
9339 3) ASL Compiler, version X2033:
9341 Fixed some issues with the use of the new CopyObject and
9342 DataTableRegion operators. Both are fully functional.
9344 ----------------------------------------
9345 Summary of changes for this label: 11_20_01
9347 20 November 2001. Summary of changes for this release.
9349 1) ACPI CA Core Subsystem:
9351 Updated Index support to match ACPI 2.0 semantics. Storing a
9352 Integer, String, or Buffer to an Index of a Buffer will store only
9353 the least-significant byte of the source to the Indexed buffer
9354 byte. Multiple writes are not performed.
9356 Fixed a problem where the access type used in an AccessAs ASL
9357 operator was not recorded correctly into the field object.
9359 Fixed a problem where ASL Event objects were created in a
9360 signalled state. Events are now created in an unsignalled state.
9362 The internal object cache is now purged after table loading and
9363 initialization to reduce the use of dynamic kernel memory -- on
9364 the assumption that object use is greatest during the parse phase
9365 of the entire table (versus the run-time use of individual control
9368 ACPI 2.0 variable-length packages are now fully operational.
9370 Code and Data Size: Code and Data optimizations have permitted new
9371 feature development with an actual reduction in the library size.
9372 Current core subsystem library sizes are shown below. These are
9373 the code and data sizes for the acpica.lib produced by the
9374 Microsoft Visual C++ 6.0 compiler, and these values do not include
9375 any ACPI driver or OSPM code. The debug version of the code
9376 includes the debug output trace mechanism and has a larger code
9377 and data size. Note that these values will vary depending on the
9378 efficiency of the compiler and the compiler options used during
9381 Previous Release (11_09_01):
9382 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
9383 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
9386 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
9387 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
9391 Enhanced the ACPI boot-time initialization code to allow the use
9392 of Local APIC tables for processor enumeration on IA-32, and to
9393 pave the way for a fully MPS-free boot (on SMP systems) in the
9394 near future. This functionality replaces
9395 arch/i386/kernel/acpitables.c, which was introduced in an earlier
9396 2.4.15-preX release. To enable this feature you must add
9397 "acpi_boot=on" to the kernel command line -- see the help entry
9398 for CONFIG_ACPI_BOOT for more information. An IA-64 release is in
9401 Restructured the configuration options to allow boot-time table
9402 parsing support without inclusion of the ACPI Interpreter (and
9405 NOTE: This release does not include fixes for the reported events,
9406 power-down, and thermal passive cooling issues (coming soon).
9410 Added additional typechecking for Fields within restricted access
9411 Operation Regions. All fields within EC and CMOS regions must be
9412 declared with ByteAcc. All fields withing SMBus regions must be
9413 declared with the BufferAcc access type.
9415 Fixed a problem where the listing file output of control methods
9416 no longer interleaved the actual AML code with the ASL source
9422 ----------------------------------------
9423 Summary of changes for this label: 11_09_01
9425 1) ACPI CA Core Subsystem:
9427 Implemented ACPI 2.0-defined support for writes to fields with a
9428 Buffer, String, or Integer source operand that is smaller than the
9429 target field. In these cases, the source operand is zero-extended
9430 to fill the target field.
9432 Fixed a problem where a Field starting bit offset (within the
9433 parent operation region) was calculated incorrectly if the
9435 alignment of the field differed from the access width. This
9436 affected CreateWordField, CreateDwordField, CreateQwordField, and
9437 possibly other fields that use the "AccessAny" keyword.
9439 Fixed a problem introduced in the 11_02_01 release where indirect
9440 stores through method arguments did not operate correctly.
9444 Implemented boot-time ACPI table parsing support
9445 (CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code
9446 facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than
9447 legacy BIOS interfaces (e.g. MPS) for the configuration of system
9448 processors, memory, and interrupts during setup_arch(). Note that
9449 this patch does not include the required architecture-specific
9450 changes required to apply this information -- subsequent patches
9451 will be posted for both IA32 and IA64 to achieve this.
9453 Added low-level sleep support for IA32 platforms, courtesy of Pat
9454 Mochel. This allows IA32 systems to transition to/from various
9455 sleeping states (e.g. S1, S3), although the lack of a centralized
9456 driver model and power-manageable drivers will prevent its
9457 (successful) use on most systems.
9459 Revamped the ACPI 'menuconfig' layout: created new "ACPI Support"
9460 submenu, unified IA32 and IA64 options, added new "Boot using ACPI
9461 tables" option, etc.
9463 Increased the default timeout for the EC driver from 1ms to 10ms
9464 (1000 cycles of 10us) to try to address AE_TIME errors during EC
9467 ----------------------------------------
9468 Summary of changes for this label: 11_02_01
9470 1) ACPI CA Core Subsystem:
9472 ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access
9473 (QWordAcc keyword). All ACPI 2.0 64-bit support is now
9476 OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required
9477 changes to support ACPI 2.0 Qword field access. Read/Write
9478 PciConfiguration(), Read/Write Memory(), and Read/Write Port() now
9479 accept an ACPI_INTEGER (64 bits) as the value parameter. Also,
9480 the value parameter for the address space handler interface is now
9481 an ACPI_INTEGER. OSL implementations of these interfaces must now
9482 handle the case where the Width parameter is 64.
9484 Index Fields: Fixed a problem where unaligned bit assembly and
9485 disassembly for IndexFields was not supported correctly.
9487 Index and Bank Fields: Nested Index and Bank Fields are now
9488 supported. During field access, a check is performed to ensure
9489 that the value written to an Index or Bank register is not out of
9490 the range of the register. The Index (or Bank) register is
9491 written before each access to the field data. Future support will
9492 include allowing individual IndexFields to be wider than the
9495 Fields: Fixed a problem where the AML interpreter was incorrectly
9496 attempting to write beyond the end of a Field/OpRegion. This was
9497 a boundary case that occurred when a DWORD field was written to a
9498 BYTE access OpRegion, forcing multiple writes and causing the
9499 interpreter to write one datum too many.
9501 Fields: Fixed a problem with Field/OpRegion access where the
9502 starting bit address of a field was incorrectly calculated if the
9503 current access type was wider than a byte (WordAcc, DwordAcc, or
9506 Fields: Fixed a problem where forward references to individual
9507 FieldUnits (individual Field names within a Field definition) were
9508 not resolved during the AML table load.
9510 Fields: Fixed a problem where forward references from a Field
9511 definition to the parent Operation Region definition were not
9512 resolved during the AML table load.
9514 Fields: Duplicate FieldUnit names within a scope are now detected
9515 during AML table load.
9517 Acpi Interfaces: Fixed a problem where the AcpiGetName() interface
9518 returned an incorrect name for the root node.
9520 Code and Data Size: Code and Data optimizations have permitted new
9521 feature development with an actual reduction in the library size.
9522 Current core subsystem library sizes are shown below. These are
9523 the code and data sizes for the acpica.lib produced by the
9524 Microsoft Visual C++ 6.0 compiler, and these values do not include
9525 any ACPI driver or OSPM code. The debug version of the code
9526 includes the debug output trace mechanism and has a larger code
9527 and data size. Note that these values will vary depending on the
9528 efficiency of the compiler and the compiler options used during
9531 Previous Release (10_18_01):
9532 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
9533 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
9536 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
9537 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
9541 Improved /proc processor output (Pavel Machek) Re-added
9542 MODULE_LICENSE("GPL") to all modules.
9544 3) ASL Compiler version X2030:
9546 Duplicate FieldUnit names within a scope are now detected and
9551 Programmer Reference updated to reflect OSL and address space
9552 handler interface changes described above.
9554 ----------------------------------------
9555 Summary of changes for this label: 10_18_01
9557 ACPI CA Core Subsystem:
9559 Fixed a problem with the internal object reference count mechanism
9560 that occasionally caused premature object deletion. This resolves
9561 all of the outstanding problem reports where an object is deleted
9562 in the middle of an interpreter evaluation. Although this problem
9563 only showed up in rather obscure cases, the solution to the
9564 problem involved an adjustment of all reference counts involving
9565 objects attached to namespace nodes.
9567 Fixed a problem with Field support in the interpreter where
9568 writing to an aligned field whose length is an exact multiple (2
9569 or greater) of the field access granularity would cause an attempt
9570 to write beyond the end of the field.
9572 The top level AML opcode execution functions within the
9573 interpreter have been renamed with a more meaningful and
9574 consistent naming convention. The modules exmonad.c and
9575 exdyadic.c were eliminated. New modules are exoparg1.c,
9576 exoparg2.c, exoparg3.c, and exoparg6.c.
9578 Support for the ACPI 2.0 "Mid" ASL operator has been implemented.
9580 Fixed a problem where the AML debugger was causing some internal
9581 objects to not be deleted during subsystem termination.
9583 Fixed a problem with the external AcpiEvaluateObject interface
9584 where the subsystem would fault if the named object to be
9585 evaluated refered to a constant such as Zero, Ones, etc.
9587 Fixed a problem with IndexFields and BankFields where the
9588 subsystem would fault if the index, data, or bank registers were
9589 not defined in the same scope as the field itself.
9591 Added printf format string checking for compilers that support
9592 this feature. Corrected more than 50 instances of issues with
9593 format specifiers within invocations of ACPI_DEBUG_PRINT
9594 throughout the core subsystem code.
9596 The ASL "Revision" operator now returns the ACPI support level
9597 implemented in the core - the value "2" since the ACPI 2.0 support
9598 is more than 50% implemented.
9600 Enhanced the output of the AML debugger "dump namespace" command
9601 to output in a more human-readable form.
9603 Current core subsystem library code sizes are shown below. These
9605 are the code and data sizes for the acpica.lib produced by the
9606 Microsoft Visual C++ 6.0 compiler, and these values do not include
9607 any ACPI driver or OSPM code. The debug version of the code
9608 includes the full debug trace mechanism -- leading to a much
9610 larger code and data size. Note that these values will vary
9611 depending on the efficiency of the compiler and the compiler
9612 options used during generation.
9614 Previous Label (09_20_01):
9615 Non-Debug Version: 65K Code, 5K Data, 70K Total
9616 Debug Version: 138K Code, 58K Data, 196K Total
9620 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
9621 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
9625 Implemented a "Bad BIOS Blacklist" to track machines that have
9626 known ASL/AML problems.
9628 Enhanced the /proc interface for the thermal zone driver and added
9629 support for _HOT (the critical suspend trip point). The 'info'
9630 file now includes threshold/policy information, and allows setting
9631 of _SCP (cooling preference) and _TZP (polling frequency) values
9632 to the 'info' file. Examples: "echo tzp=5 > info" sets the polling
9633 frequency to 5 seconds, and "echo scp=1 > info" sets the cooling
9634 preference to the passive/quiet mode (if supported by the ASL).
9636 Implemented a workaround for a gcc bug that resuted in an OOPs
9637 when loading the control method battery driver.
9639 ----------------------------------------
9640 Summary of changes for this label: 09_20_01
9642 ACPI CA Core Subsystem:
9644 The AcpiEnableEvent and AcpiDisableEvent interfaces have been
9645 modified to allow individual GPE levels to be flagged as wake-
9646 enabled (i.e., these GPEs are to remain enabled when the platform
9649 The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now
9650 support wake-enabled GPEs. This means that upon entering the
9651 sleep state, all GPEs that are not wake-enabled are disabled.
9652 When leaving the sleep state, these GPEs are reenabled.
9654 A local double-precision divide/modulo module has been added to
9655 enhance portability to OS kernels where a 64-bit math library is
9656 not available. The new module is "utmath.c".
9658 Several optimizations have been made to reduce the use of CPU
9659 stack. Originally over 2K, the maximum stack usage is now below
9660 2K at 1860 bytes (1.82k)
9662 Fixed a problem with the AcpiGetFirmwareTable interface where the
9663 root table pointer was not mapped into a logical address properly.
9665 Fixed a problem where a NULL pointer was being dereferenced in the
9666 interpreter code for the ASL Notify operator.
9668 Fixed a problem where the use of the ASL Revision operator
9669 returned an error. This operator now returns the current version
9670 of the ACPI CA core subsystem.
9672 Fixed a problem where objects passed as control method parameters
9673 to AcpiEvaluateObject were always deleted at method termination.
9674 However, these objects may end up being stored into the namespace
9675 by the called method. The object reference count mechanism was
9676 applied to these objects instead of a force delete.
9678 Fixed a problem where static strings or buffers (contained in the
9679 AML code) that are declared as package elements within the ASL
9680 code could cause a fault because the interpreter would attempt to
9681 delete them. These objects are now marked with the "static
9682 object" flag to prevent any attempt to delete them.
9684 Implemented an interpreter optimization to use operands directly
9685 from the state object instead of extracting the operands to local
9686 variables. This reduces stack use and code size, and improves
9689 The module exxface.c was eliminated as it was an unnecessary extra
9692 Current core subsystem library code sizes are shown below. These
9693 are the code and data sizes for the acpica.lib produced by the
9694 Microsoft Visual C++ 6.0 compiler, and these values do not include
9695 any ACPI driver or OSPM code. The debug version of the code
9696 includes the full debug trace mechanism -- leading to a much
9697 larger code and data size. Note that these values will vary
9698 depending on the efficiency of the compiler and the compiler
9699 options used during generation.
9701 Non-Debug Version: 65K Code, 5K Data, 70K Total
9702 (Previously 69K) Debug Version: 138K Code, 58K Data, 196K
9703 Total (Previously 195K)
9707 Support for ACPI 2.0 64-bit integers has been added. All ACPI
9708 Integer objects are now 64 bits wide
9710 All Acpi data types and structures are now in lower case. Only
9711 Acpi macros are upper case for differentiation.
9715 Changes to the external interfaces as described above.
9717 ----------------------------------------
9718 Summary of changes for this label: 08_31_01
9720 ACPI CA Core Subsystem:
9722 A bug with interpreter implementation of the ASL Divide operator
9723 was found and fixed. The implicit function return value (not the
9724 explicit store operands) was returning the remainder instead of
9725 the quotient. This was a longstanding bug and it fixes several
9726 known outstanding issues on various platforms.
9728 The ACPI_DEBUG_PRINT and function trace entry/exit macros have
9729 been further optimized for size. There are 700 invocations of the
9730 DEBUG_PRINT macro alone, so each optimization reduces the size of
9731 the debug version of the subsystem significantly.
9733 A stack trace mechanism has been implemented. The maximum stack
9734 usage is about 2K on 32-bit platforms. The debugger command "stat
9735 stack" will display the current maximum stack usage.
9737 All public symbols and global variables within the subsystem are
9738 now prefixed with the string "Acpi". This keeps all of the
9739 symbols grouped together in a kernel map, and avoids conflicts
9740 with other kernel subsystems.
9742 Most of the internal fixed lookup tables have been moved into the
9743 code segment via the const operator.
9745 Several enhancements have been made to the interpreter to both
9746 reduce the code size and improve performance.
9748 Current core subsystem library code sizes are shown below. These
9749 are the code and data sizes for the acpica.lib produced by the
9750 Microsoft Visual C++ 6.0 compiler, and these values do not include
9751 any ACPI driver or OSPM code. The debug version of the code
9752 includes the full debug trace mechanism which contains over 700
9753 invocations of the DEBUG_PRINT macro, 500 function entry macro
9754 invocations, and over 900 function exit macro invocations --
9755 leading to a much larger code and data size. Note that these
9756 values will vary depending on the efficiency of the compiler and
9757 the compiler options used during generation.
9759 Non-Debug Version: 64K Code, 5K Data, 69K Total
9760 Debug Version: 137K Code, 58K Data, 195K Total
9764 Implemented wbinvd() macro, pending a kernel-wide definition.
9766 Fixed /proc/acpi/event to handle poll() and short reads.
9768 ASL Compiler, version X2026:
9770 Fixed a problem introduced in the previous label where the AML
9772 code emitted for package objects produced packages with zero
9775 ----------------------------------------
9776 Summary of changes for this label: 08_16_01
9778 ACPI CA Core Subsystem:
9780 The following ACPI 2.0 ASL operators have been implemented in the
9781 AML interpreter (These are already supported by the Intel ASL
9782 compiler): ToDecimalString, ToHexString, ToString, ToInteger, and
9783 ToBuffer. Support for 64-bit AML constants is implemented in the
9784 AML parser, debugger, and disassembler.
9786 The internal memory tracking mechanism (leak detection code) has
9787 been upgraded to reduce the memory overhead (a separate tracking
9788 block is no longer allocated for each memory allocation), and now
9789 supports all of the internal object caches.
9791 The data structures and code for the internal object caches have
9792 been coelesced and optimized so that there is a single cache and
9793 memory list data structure and a single group of functions that
9794 implement generic cache management. This has reduced the code
9795 size in both the debug and release versions of the subsystem.
9797 The DEBUG_PRINT macro(s) have been optimized for size and replaced
9798 by ACPI_DEBUG_PRINT. The syntax for this macro is slightly
9799 different, because it generates a single call to an internal
9800 function. This results in a savings of about 90 bytes per
9801 invocation, resulting in an overall code and data savings of about
9802 16% in the debug version of the subsystem.
9806 Fixed C3 disk corruption problems and re-enabled C3 on supporting
9809 Integrated low-level sleep code by Patrick Mochel.
9811 Further tweaked source code Linuxization.
9817 Support for ACPI 2.0 variable length packages is fixed/completed.
9819 Fixed a problem where the optional length parameter for the ACPI
9820 2.0 ToString operator.
9822 Fixed multiple extraneous error messages when a syntax error is
9823 detected within the declaration line of a control method.
9825 ----------------------------------------
9826 Summary of changes for this label: 07_17_01
9828 ACPI CA Core Subsystem:
9830 Added a new interface named AcpiGetFirmwareTable to obtain any
9831 ACPI table via the ACPI signature. The interface can be called at
9832 any time during kernel initialization, even before the kernel
9833 virtual memory manager is initialized and paging is enabled. This
9834 allows kernel subsystems to obtain ACPI tables very early, even
9835 before the ACPI CA subsystem is initialized.
9837 Fixed a problem where Fields defined with the AnyAcc attribute
9838 could be resolved to the incorrect address under the following
9839 conditions: 1) the field width is larger than 8 bits and 2) the
9840 parent operation region is not defined on a DWORD boundary.
9842 Fixed a problem where the interpreter is not being locked during
9843 namespace initialization (during execution of the _INI control
9844 methods), causing an error when an attempt is made to release it
9847 ACPI 2.0 support in the AML Interpreter has begun and will be
9848 ongoing throughout the rest of this year. In this label, The Mod
9849 operator is implemented.
9851 Added a new data type to contain full PCI addresses named
9852 ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device,
9853 and Function values.
9857 Enhanced the Linux version of the source code to change most
9858 capitalized ACPI type names to lowercase. For example, all
9859 instances of ACPI_STATUS are changed to acpi_status. This will
9860 result in a large diff, but the change is strictly cosmetic and
9861 aligns the CA code closer to the Linux coding standard.
9865 The interfaces to the PCI configuration space have been changed to
9866 add the PCI Segment number and to split the single 32-bit combined
9867 DeviceFunction field into two 16-bit fields. This was
9868 accomplished by moving the four values that define an address in
9869 PCI configuration space (segment, bus, device, and function) to
9870 the new ACPI_PCI_ID structure.
9872 The changes to the PCI configuration space interfaces led to a
9873 reexamination of the complete set of address space access
9874 interfaces for PCI, I/O, and Memory. The previously existing 18
9875 interfaces have proven difficult to maintain (any small change
9876 must be propagated across at least 6 interfaces) and do not easily
9877 allow for future expansion to 64 bits if necessary. Also, on some
9878 systems, it would not be appropriate to demultiplex the access
9879 width (8, 16, 32,or 64) before calling the OSL if the
9880 corresponding native OS interfaces contain a similar access width
9881 parameter. For these reasons, the 18 address space interfaces
9882 have been replaced by these 6 new ones:
9884 AcpiOsReadPciConfiguration
9885 AcpiOsWritePciConfiguration
9891 Added a new interface named AcpiOsGetRootPointer to allow the OSL
9892 to perform the platform and/or OS-specific actions necessary to
9893 obtain the ACPI RSDP table pointer. On IA-32 platforms, this
9894 interface will simply call down to the CA core to perform the low-
9895 memory search for the table. On IA-64, the RSDP is obtained from
9896 EFI. Migrating this interface to the OSL allows the CA core to
9898 remain OS and platform independent.
9900 Added a new interface named AcpiOsSignal to provide a generic
9901 "function code and pointer" interface for various miscellaneous
9902 signals and notifications that must be made to the host OS. The
9903 first such signals are intended to support the ASL Fatal and
9904 Breakpoint operators. In the latter case, the AcpiOsBreakpoint
9905 interface has been obsoleted.
9907 The definition of the AcpiFormatException interface has been
9908 changed to simplify its use. The caller no longer must supply a
9909 buffer to the call; A pointer to a const string is now returned
9910 directly. This allows the call to be easily used in printf
9911 statements, etc. since the caller does not have to manage a local
9915 ASL Compiler, Version X2025:
9917 The ACPI 2.0 Switch/Case/Default operators have been implemented
9918 and are fully functional. They will work with all ACPI 1.0
9919 interpreters, since the operators are simply translated to If/Else
9922 The ACPI 2.0 ElseIf operator is implemented and will also work
9923 with 1.0 interpreters, for the same reason.
9925 Implemented support for ACPI 2.0 variable-length packages. These
9926 packages have a separate opcode, and their size is determined by
9927 the interpreter at run-time.
9929 Documentation The ACPI CA Programmer Reference has been updated to
9930 reflect the new interfaces and changes to existing interfaces.
9932 ------------------------------------------
9933 Summary of changes for this label: 06_15_01
9935 ACPI CA Core Subsystem:
9937 Fixed a problem where a DWORD-accessed field within a Buffer
9938 object would get its byte address inadvertently rounded down to
9939 the nearest DWORD. Buffers are always Byte-accessible.
9941 ASL Compiler, version X2024:
9943 Fixed a problem where the Switch() operator would either fault or
9944 hang the compiler. Note however, that the AML code for this ACPI
9945 2.0 operator is not yet implemented.
9947 Compiler uses the new AcpiOsGetTimer interface to obtain compile
9950 Implementation of the CreateField operator automatically converts
9951 a reference to a named field within a resource descriptor from a
9952 byte offset to a bit offset if required.
9954 Added some missing named fields from the resource descriptor
9955 support. These are the names that are automatically created by the
9956 compiler to reference fields within a descriptor. They are only
9957 valid at compile time and are not passed through to the AML
9960 Resource descriptor named fields are now typed as Integers and
9961 subject to compile-time typechecking when used in expressions.
9963 ------------------------------------------
9964 Summary of changes for this label: 05_18_01
9966 ACPI CA Core Subsystem:
9968 Fixed a couple of problems in the Field support code where bits
9969 from adjacent fields could be returned along with the proper field
9970 bits. Restructured the field support code to improve performance,
9971 readability and maintainability.
9973 New DEBUG_PRINTP macro automatically inserts the procedure name
9974 into the output, saving hundreds of copies of procedure name
9975 strings within the source, shrinking the memory footprint of the
9976 debug version of the core subsystem.
9978 Source Code Structure:
9980 The source code directory tree was restructured to reflect the
9981 current organization of the component architecture. Some files
9982 and directories have been moved and/or renamed.
9986 Fixed leaking kacpidpc processes.
9988 Fixed queueing event data even when /proc/acpi/event is not
9991 ASL Compiler, version X2020:
9993 Memory allocation performance enhancement - over 24X compile time
9994 improvement on large ASL files. Parse nodes and namestring
9995 buffers are now allocated from a large internal compiler buffer.
9997 The temporary .SRC file is deleted unless the "-s" option is
10000 The "-d" debug output option now sends all output to the .DBG file
10001 instead of the console.
10003 "External" second parameter is now optional
10005 "ElseIf" syntax now properly allows the predicate
10007 Last operand to "Load" now recognized as a Target operand
10009 Debug object can now be used anywhere as a normal object.
10011 ResourceTemplate now returns an object of type BUFFER
10013 EISAID now returns an object of type INTEGER
10015 "Index" now works with a STRING operand
10017 "LoadTable" now accepts optional parameters
10019 "ToString" length parameter is now optional
10021 "Interrupt (ResourceType," parse error fixed.
10023 "Register" with a user-defined region space parse error fixed
10025 Escaped backslash at the end of a string ("\\") scan/parse error
10028 "Revision" is now an object of type INTEGER.
10032 ------------------------------------------
10033 Summary of changes for this label: 05_02_01
10037 /proc/acpi/event now blocks properly.
10039 Removed /proc/sys/acpi. You can still dump your DSDT from
10042 ACPI CA Core Subsystem:
10044 Fixed a problem introduced in the previous label where some of the
10045 "small" resource descriptor types were not recognized.
10047 Improved error messages for the case where an ASL Field is outside
10048 the range of the parent operation region.
10050 ASL Compiler, version X2018:
10053 Added error detection for ASL Fields that extend beyond the length
10054 of the parent operation region (only if the length of the region
10055 is known at compile time.) This includes fields that have a
10056 minimum access width that is smaller than the parent region, and
10057 individual field units that are partially or entirely beyond the
10058 extent of the parent.
10062 ------------------------------------------
10063 Summary of changes for this label: 04_27_01
10065 ACPI CA Core Subsystem:
10067 Fixed a problem where the namespace mutex could be released at the
10068 wrong time during execution of AcpiRemoveAddressSpaceHandler.
10070 Added optional thread ID output for debug traces, to simplify
10071 debugging of multiple threads. Added context switch notification
10072 when the debug code realizes that a different thread is now
10073 executing ACPI code.
10075 Some additional external data types have been prefixed with the
10076 string "ACPI_" for consistency. This may effect existing code.
10077 The data types affected are the external callback typedefs - e.g.,
10079 WALK_CALLBACK becomes ACPI_WALK_CALLBACK.
10083 Fixed an issue with the OSL semaphore implementation where a
10084 thread was waking up with an error from receiving a SIGCHLD
10087 Linux version of ACPI CA now uses the system C library for string
10088 manipulation routines instead of a local implementation.
10090 Cleaned up comments and removed TBDs.
10092 ASL Compiler, version X2017:
10094 Enhanced error detection and reporting for all file I/O
10099 Programmer Reference updated to version 1.06.
10103 ------------------------------------------
10104 Summary of changes for this label: 04_13_01
10106 ACPI CA Core Subsystem:
10108 Restructured support for BufferFields and RegionFields.
10109 BankFields support is now fully operational. All known 32-bit
10110 limitations on field sizes have been removed. Both BufferFields
10111 and (Operation) RegionFields are now supported by the same field
10114 Resource support now supports QWORD address and IO resources. The
10115 16/32/64 bit address structures and the Extended IRQ structure
10116 have been changed to properly handle Source Resource strings.
10118 A ThreadId of -1 is now used to indicate a "mutex not acquired"
10119 condition internally and must never be returned by AcpiOsThreadId.
10120 This reserved value was changed from 0 since Unix systems allow a
10125 Driver code reorganized to enhance portability
10127 Added a kernel configuration option to control ACPI_DEBUG
10129 Fixed the EC driver to honor _GLK.
10131 ASL Compiler, version X2016:
10133 Fixed support for the "FixedHw" keyword. Previously, the FixedHw
10134 address space was set to 0, not 0x7f as it should be.
10136 ------------------------------------------
10137 Summary of changes for this label: 03_13_01
10139 ACPI CA Core Subsystem:
10141 During ACPI initialization, the _SB_._INI method is now run if
10144 Notify handler fix - notifies are deferred until the parent method
10145 completes execution. This fixes the "mutex already acquired"
10146 issue seen occasionally.
10148 Part of the "implicit conversion" rules in ACPI 2.0 have been
10149 found to cause compatibility problems with existing ASL/AML. The
10150 convert "result-to-target-type" implementation has been removed
10151 for stores to method Args and Locals. Source operand conversion
10152 is still fully implemented. Possible changes to ACPI 2.0
10153 specification pending.
10155 Fix to AcpiRsCalculatePciRoutingTableLength to return correct
10158 Fix for compiler warnings for 64-bit compiles.
10162 /proc output aligned for easier parsing.
10164 Release-version compile problem fixed.
10166 New kernel configuration options documented in Configure.help.
10168 IBM 600E - Fixed Sleep button may generate "Invalid <NULL>
10173 Power resource driver integrated with bus manager.
10175 Fixed kernel fault during active cooling for thermal zones.
10179 The source code tree has been restructured.
10183 ------------------------------------------
10184 Summary of changes for this label: 03_02_01
10186 Linux OS Services Layer (OSL):
10188 Major revision of all Linux-specific code.
10190 Modularized all ACPI-specific drivers.
10192 Added new thermal zone and power resource drivers.
10194 Revamped /proc interface (new functionality is under /proc/acpi).
10196 New kernel configuration options.
10198 Linux known issues:
10200 New kernel configuration options not documented in Configure.help
10204 Module dependencies not currently implemented. If used, they
10205 should be loaded in this order: busmgr, power, ec, system,
10206 processor, battery, ac_adapter, button, thermal.
10208 Modules will not load if CONFIG_MODVERSION is set.
10210 IBM 600E - entering S5 may reboot instead of shutting down.
10212 IBM 600E - Sleep button may generate "Invalid <NULL> context"
10215 Some systems may fail with "execution mutex already acquired"
10218 ACPI CA Core Subsystem:
10220 Added a new OSL Interface, AcpiOsGetThreadId. This was required
10221 for the deadlock detection code. Defined to return a non-zero, 32-
10222 bit thread ID for the currently executing thread. May be a non-
10223 zero constant integer on single-thread systems.
10225 Implemented deadlock detection for internal subsystem mutexes. We
10226 may add conditional compilation for this code (debug only) later.
10228 ASL/AML Mutex object semantics are now fully supported. This
10229 includes multiple acquires/releases by owner and support for the
10231 Mutex SyncLevel parameter.
10233 A new "Force Release" mechanism automatically frees all ASL
10234 Mutexes that have been acquired but not released when a thread
10235 exits the interpreter. This forces conformance to the ACPI spec
10236 ("All mutexes must be released when an invocation exits") and
10237 prevents deadlocked ASL threads. This mechanism can be expanded
10238 (later) to monitor other resource acquisitions if OEM ASL code
10239 continues to misbehave (which it will).
10241 Several new ACPI exception codes have been added for the Mutex
10244 Recursive method calls are now allowed and supported (the ACPI
10245 spec does in fact allow recursive method calls.) The number of
10246 recursive calls is subject to the restrictions imposed by the
10247 SERIALIZED method keyword and SyncLevel (ACPI 2.0) method
10250 Implemented support for the SyncLevel parameter for control
10251 methods (ACPI 2.0 feature)
10253 Fixed a deadlock problem when multiple threads attempted to use
10256 Fixed a problem where the string length of a String package
10257 element was not always set in a package returned from
10258 AcpiEvaluateObject.
10260 Fixed a problem where the length of a String package element was
10261 not always included in the length of the overall package returned
10262 from AcpiEvaluateObject.
10264 Added external interfaces (Acpi*) to the ACPI debug memory
10265 manager. This manager keeps a list of all outstanding
10266 allocations, and can therefore detect memory leaks and attempts to
10267 free memory blocks more than once. Useful for code such as the
10268 power manager, etc. May not be appropriate for device drivers.
10269 Performance with the debug code enabled is slow.
10271 The ACPI Global Lock is now an optional hardware element.
10273 ASL Compiler Version X2015:
10275 Integrated changes to allow the compiler to be generated on
10276 multiple platforms.
10278 Linux makefile added to generate the compiler on Linux
10282 All platform-specific headers have been moved to their own
10283 subdirectory, Include/Platform.
10285 New source file added, Interpreter/ammutex.c
10287 New header file, Include/acstruct.h
10291 The programmer reference has been updated for the following new
10292 interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree
10294 ------------------------------------------
10295 Summary of changes for this label: 02_08_01
10297 Core ACPI CA Subsystem: Fixed a problem where an error was
10298 incorrectly returned if the return resource buffer was larger than
10299 the actual data (in the resource interfaces).
10301 References to named objects within packages are resolved to the
10303 full pathname string before packages are returned directly (via
10304 the AcpiEvaluateObject interface) or indirectly via the resource
10307 Linux OS Services Layer (OSL):
10309 Improved /proc battery interface.
10312 Added C-state debugging output and other miscellaneous fixes.
10314 ASL Compiler Version X2014:
10316 All defined method arguments can now be used as local variables,
10317 including the ones that are not actually passed in as parameters.
10318 The compiler tracks initialization of the arguments and issues an
10319 exception if they are used without prior assignment (just like
10322 The -o option now specifies a filename prefix that is used for all
10323 output files, including the AML output file. Otherwise, the
10324 default behavior is as follows: 1) the AML goes to the file
10325 specified in the DSDT. 2) all other output files use the input
10326 source filename as the base.
10328 ------------------------------------------
10329 Summary of changes for this label: 01_25_01
10331 Core ACPI CA Subsystem: Restructured the implementation of object
10332 store support within the interpreter. This includes support for
10333 the Store operator as well as any ASL operators that include a
10336 Partially implemented support for Implicit Result-to-Target
10337 conversion. This is when a result object is converted on the fly
10338 to the type of an existing target object. Completion of this
10339 support is pending further analysis of the ACPI specification
10340 concerning this matter.
10342 CPU-specific code has been removed from the subsystem (hardware
10345 New Power Management Timer functions added
10347 Linux OS Services Layer (OSL): Moved system state transition code
10348 to the core, fixed it, and modified Linux OSL accordingly.
10350 Fixed C2 and C3 latency calculations.
10353 We no longer use the compilation date for the version message on
10354 initialization, but retrieve the version from AcpiGetSystemInfo().
10356 Incorporated for fix Sony VAIO machines.
10358 Documentation: The Programmer Reference has been updated and
10362 ASL Compiler: Version X2013: Fixed a problem where the line
10363 numbering and error reporting could get out of sync in the
10364 presence of multiple include files.
10366 ------------------------------------------
10367 Summary of changes for this label: 01_15_01
10369 Core ACPI CA Subsystem:
10371 Implemented support for type conversions in the execution of the
10372 ASL Concatenate operator (The second operand is converted to
10373 match the type of the first operand before concatenation.)
10375 Support for implicit source operand conversion is partially
10376 implemented. The ASL source operand types Integer, Buffer, and
10377 String are freely interchangeable for most ASL operators and are
10378 converted by the interpreter on the fly as required. Implicit
10379 Target operand conversion (where the result is converted to the
10380 target type before storing) is not yet implemented.
10382 Support for 32-bit and 64-bit BCD integers is implemented.
10384 Problem fixed where a field read on an aligned field could cause a
10385 read past the end of the field.
10387 New exception, AE_AML_NO_RETURN_VALUE, is returned when a method
10388 does not return a value, but the caller expects one. (The ASL
10389 compiler flags this as a warning.)
10394 1. Static typechecking of all operands is implemented. This
10395 prevents the use of invalid objects (such as using a Package where
10396 an Integer is required) at compile time instead of at interpreter
10398 2. The ASL source line is printed with ALL errors and warnings.
10399 3. Bug fix for source EOF without final linefeed.
10400 4. Debug option is split into a parse trace and a namespace trace.
10401 5. Namespace output option (-n) includes initial values for
10402 integers and strings.
10403 6. Parse-only option added for quick syntax checking.
10404 7. Compiler checks for duplicate ACPI name declarations
10407 1. Relaxed typechecking to allow interchangeability between
10408 strings, integers, and buffers. These types are now converted by
10409 the interpreter at runtime.
10410 2. Compiler reports time taken by each internal subsystem in the
10414 ------------------------------------------
10415 Summary of changes for this label: 12_14_00
10419 This is the first official release of the compiler. Since the
10420 compiler requires elements of the Core Subsystem, this label
10421 synchronizes everything.
10423 ------------------------------------------
10424 Summary of changes for this label: 12_08_00
10427 Fixed a problem where named references within the ASL definition
10428 of both OperationRegions and CreateXXXFields did not work
10429 properly. The symptom was an AE_AML_OPERAND_TYPE during
10430 initialization of the region/field. This is similar (but not
10431 related internally) to the problem that was fixed in the last
10434 Implemented both 32-bit and 64-bit support for the BCD ASL
10435 functions ToBCD and FromBCD.
10437 Updated all legal headers to include "2000" in the copyright
10440 ------------------------------------------
10441 Summary of changes for this label: 12_01_00
10443 Fixed a problem where method invocations within the ASL definition
10444 of both OperationRegions and CreateXXXFields did not work
10445 properly. The symptom was an AE_AML_OPERAND_TYPE during
10446 initialization of the region/field:
10448 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments
10449 [DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s)
10452 Fixed a problem where operators with more than one nested
10453 subexpression would fail. The symptoms were varied, by mostly
10454 AE_AML_OPERAND_TYPE errors. This was actually a rather serious
10455 problem that has gone unnoticed until now.
10457 Subtract (Add (1,2), Multiply (3,4))
10459 Fixed a problem where AcpiGetHandle didn't quite get fixed in the
10460 previous build (The prefix part of a relative path was handled
10463 Fixed a problem where Operation Region initialization failed if
10464 the operation region name was a "namepath" instead of a simple
10465 "nameseg". Symptom was an AE_NO_OPERAND error.
10467 Fixed a problem where an assignment to a local variable via the
10468 indirect RefOf mechanism only worked for the first such
10469 assignment. Subsequent assignments were ignored.
10471 ------------------------------------------
10472 Summary of changes for this label: 11_15_00
10474 ACPI 2.0 table support with backwards support for ACPI 1.0 and the
10475 0.71 extensions. Note: although we can read ACPI 2.0 BIOS tables,
10476 the AML interpreter does NOT have support for the new 2.0 ASL
10477 grammar terms at this time.
10479 All ACPI hardware access is via the GAS structures in the ACPI 2.0
10482 All physical memory addresses across all platforms are now 64 bits
10483 wide. Logical address width remains dependent on the platform
10486 AcpiOsMapMemory interface changed to a 64-bit physical address.
10488 The AML interpreter integer size is now 64 bits, as per the ACPI
10491 For backwards compatibility with ACPI 1.0, ACPI tables with a
10492 revision number less than 2 use 32-bit integers only.
10494 Fixed a problem where the evaluation of OpRegion operands did not
10495 always resolve them to numbers properly.
10497 ------------------------------------------
10498 Summary of changes for this label: 10_20_00
10500 Fix for CBN_._STA issue. This fix will allow correct access to
10501 CBN_ OpRegions when the _STA returns 0x8.
10503 Support to convert ACPI constants (Ones, Zeros, One) to actual
10504 values before a package object is returned
10506 Fix for method call as predicate to if/while construct causing
10507 incorrect if/while behavior
10509 Fix for Else block package lengths sometimes calculated wrong (if
10512 Fix for Processor object length field, was always zero
10514 Table load abort if FACP sanity check fails
10516 Fix for problem with Scope(name) if name already exists
10518 Warning emitted if a named object referenced cannot be found
10519 (resolved) during method execution.
10525 ------------------------------------------
10526 Summary of changes for this label: 9_29_00
10528 New table initialization interfaces: AcpiInitializeSubsystem no
10529 longer has any parameters AcpiFindRootPointer - Find the RSDP (if
10530 necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP-
10531 >RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by
10534 Note: These interface changes require changes to all existing OSDs
10536 The PCI_Config default address space handler is always installed
10537 at the root namespace object.
10539 -------------------------------------------
10540 Summary of changes for this label: 09_15_00
10542 The new initialization architecture is implemented. New
10543 interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize)
10544 AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace
10546 (Namespace is automatically loaded when a table is loaded)
10548 The ACPI_OPERAND_OBJECT has been optimized to shrink its size from
10549 52 bytes to 32 bytes. There is usually one of these for every
10550 namespace object, so the memory savings is significant.
10552 Implemented just-in-time evaluation of the CreateField operators.
10554 Bug fixes for IA-64 support have been integrated.
10556 Additional code review comments have been implemented
10558 The so-called "third pass parse" has been replaced by a final walk
10559 through the namespace to initialize all operation regions (address
10560 spaces) and fields that have not yet been initialized during the
10561 execution of the various _INI and REG methods.
10563 New file - namespace/nsinit.c
10565 -------------------------------------------
10566 Summary of changes for this label: 09_01_00
10568 Namespace manager data structures have been reworked to change the
10569 primary object from a table to a single object. This has
10570 resulted in dynamic memory savings of 3X within the namespace and
10571 2X overall in the ACPI CA subsystem.
10573 Fixed problem where the call to AcpiEvFindPciRootBuses was
10574 inadvertently left commented out.
10576 Reduced the warning count when generating the source with the GCC
10579 Revision numbers added to each module header showing the
10580 SourceSafe version of the file. Please refer to this version
10581 number when giving us feedback or comments on individual modules.
10583 The main object types within the subsystem have been renamed to
10584 clarify their purpose:
10586 ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT
10587 ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT
10588 ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE
10590 NOTE: no changes to the initialization sequence are included in
10593 -------------------------------------------
10594 Summary of changes for this label: 08_23_00
10596 Fixed problem where TerminateControlMethod was being called
10597 multiple times per method
10599 Fixed debugger problem where single stepping caused a semaphore to
10602 Improved performance through additional parse object caching -
10603 added ACPI_EXTENDED_OP type
10605 -------------------------------------------
10606 Summary of changes for this label: 08_10_00
10608 Parser/Interpreter integration: Eliminated the creation of
10609 complete parse trees for ACPI tables and control methods.
10610 Instead, parse subtrees are created and then deleted as soon as
10611 they are processed (Either entered into the namespace or executed
10612 by the interpreter). This reduces the use of dynamic kernel
10613 memory significantly. (about 10X)
10615 Exception codes broken into classes and renumbered. Be sure to
10616 recompile all code that includes acexcep.h. Hopefully we won't
10617 have to renumber the codes again now that they are split into
10618 classes (environment, programmer, AML code, ACPI table, and
10621 Fixed some additional alignment issues in the Resource Manager
10624 Implemented semaphore tracking in the AcpiExec utility, and fixed
10625 several places where mutexes/semaphores were being unlocked
10626 without a corresponding lock operation. There are no known
10627 semaphore or mutex "leaks" at this time.
10629 Fixed the case where an ASL Return operator is used to return an
10632 -------------------------------------------
10633 Summary of changes for this label: 07_28_00
10635 Fixed a problem with the way addresses were calculated in
10636 AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem
10637 manifested itself when a Field was created with WordAccess or
10638 DwordAccess, but the field unit defined within the Field was less
10640 than a Word or Dword.
10642 Fixed a problem in AmlDumpOperands() module's loop to pull
10643 operands off of the operand stack to display information. The
10644 problem manifested itself as a TLB error on 64-bit systems when
10645 accessing an operand stack with two or more operands.
10647 Fixed a problem with the PCI configuration space handlers where
10648 context was getting confused between accesses. This required a
10649 change to the generic address space handler and address space
10650 setup definitions. Handlers now get both a global handler context
10651 (this is the one passed in by the user when executing
10652 AcpiInstallAddressSpaceHandler() and a specific region context
10653 that is unique to each region (For example, the _ADR, _SEG and
10654 _BBN values associated with a specific region). The generic
10655 function definitions have changed to the following:
10657 typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function,
10658 UINT32 Address, UINT32 BitWidth, UINT32 *Value, void
10659 *HandlerContext, // This used to be void *Context void
10660 *RegionContext); // This is an additional parameter
10662 typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE
10663 RegionHandle, UINT32 Function, void *HandlerContext, void
10664 **RegionContext); // This used to be **ReturnContext
10666 -------------------------------------------
10667 Summary of changes for this label: 07_21_00
10669 Major file consolidation and rename. All files within the
10670 interpreter have been renamed as well as most header files. This
10671 was done to prevent collisions with existing files in the host
10672 OSs -- filenames such as "config.h" and "global.h" seem to be
10673 quite common. The VC project files have been updated. All
10674 makefiles will require modification.
10676 The parser/interpreter integration continues in Phase 5 with the
10677 implementation of a complete 2-pass parse (the AML is parsed
10678 twice) for each table; This avoids the construction of a huge
10679 parse tree and therefore reduces the amount of dynamic memory
10680 required by the subsystem. Greater use of the parse object cache
10681 means that performance is unaffected.
10683 Many comments from the two code reviews have been rolled in.
10685 The 64-bit alignment support is complete.
10687 -------------------------------------------
10688 Summary of changes for this label: 06_30_00
10690 With a nod and a tip of the hat to the technology of yesteryear,
10691 we've added support in the source code for 80 column output
10692 devices. The code is now mostly constrained to 80 columns or
10693 less to support environments and editors that 1) cannot display
10694 or print more than 80 characters on a single line, and 2) cannot
10695 disable line wrapping.
10697 A major restructuring of the namespace data structure has been
10698 completed. The result is 1) cleaner and more
10699 understandable/maintainable code, and 2) a significant reduction
10700 in the dynamic memory requirement for each named ACPI object
10703 -------------------------------------------
10704 Summary of changes for this label: 06_23_00
10706 Linux support has been added. In order to obtain approval to get
10707 the ACPI CA subsystem into the Linux kernel, we've had to make
10708 quite a few changes to the base subsystem that will affect all
10709 users (all the changes are generic and OS- independent). The
10710 effects of these global changes have been somewhat far reaching.
10711 Files have been merged and/or renamed and interfaces have been
10712 renamed. The major changes are described below.
10714 Osd* interfaces renamed to AcpiOs* to eliminate namespace
10715 pollution/confusion within our target kernels. All OSD
10716 interfaces must be modified to match the new naming convention.
10718 Files merged across the subsystem. A number of the smaller source
10719 and header files have been merged to reduce the file count and
10720 increase the density of the existing files. There are too many
10721 to list here. In general, makefiles that call out individual
10722 files will require rebuilding.
10724 Interpreter files renamed. All interpreter files now have the
10725 prefix am* instead of ie* and is*.
10727 Header files renamed: The acapi.h file is now acpixf.h. The
10728 acpiosd.h file is now acpiosxf.h. We are removing references to
10729 the acronym "API" since it is somewhat windowsy. The new name is
10730 "external interface" or xface or xf in the filenames.j
10733 All manifest constants have been forced to upper case (some were
10734 mixed case.) Also, the string "ACPI_" has been prepended to many
10735 (not all) of the constants, typedefs, and structs.
10737 The globals "DebugLevel" and "DebugLayer" have been renamed
10738 "AcpiDbgLevel" and "AcpiDbgLayer" respectively.
10740 All other globals within the subsystem are now prefixed with
10741 "AcpiGbl_" Internal procedures within the subsystem are now
10742 prefixed with "Acpi" (with only a few exceptions). The original
10743 two-letter abbreviation for the subcomponent remains after "Acpi"
10744 - for example, CmCallocate became AcpiCmCallocate.
10746 Added a source code translation/conversion utility. Used to
10747 generate the Linux source code, it can be modified to generate
10748 other types of source as well. Can also be used to cleanup
10749 existing source by removing extraneous spaces and blank lines.
10750 Found in tools/acpisrc/*
10752 OsdUnMapMemory was renamed to OsdUnmapMemory and then
10753 AcpiOsUnmapMemory. (UnMap became Unmap).
10755 A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore.
10756 When set to one, this indicates that the caller wants to use the
10758 semaphore as a mutex, not a counting semaphore. ACPI CA uses
10759 both types. However, implementers of this call may want to use
10760 different OS primitives depending on the type of semaphore
10761 requested. For example, some operating systems provide separate
10763 "mutex" and "semaphore" interfaces - where the mutex interface is
10764 much faster because it doesn't have all the overhead of a full
10765 semaphore implementation.
10767 Fixed a deadlock problem where a method that accesses the PCI
10768 address space can block forever if it is the first access to the
10771 -------------------------------------------
10772 Summary of changes for this label: 06_02_00
10774 Support for environments that cannot handle unaligned data
10775 accesses (e.g. firmware and OS environments devoid of alignment
10776 handler technology namely SAL/EFI and the IA-64 Linux kernel) has
10777 been added (via configurable macros) in these three areas: -
10778 Transfer of data from the raw AML byte stream is done via byte
10779 moves instead of word/dword/qword moves. - External objects are
10780 aligned within the user buffer, including package elements (sub-
10781 objects). - Conversion of name strings to UINT32 Acpi Names is now
10784 The Store operator was modified to mimic Microsoft's
10785 implementation when storing to a Buffer Field.
10787 Added a check of the BM_STS bit before entering C3.
10789 The methods subdirectory has been obsoleted and removed. A new
10790 file, cmeval.c subsumes the functionality.
10792 A 16-bit (DOS) version of AcpiExec has been developed. The
10793 makefile is under the acpiexec directory.