1 ----------------------------------------
2 11 February 2011. Summary of changes for version 20110211:
4 This release is available at www.acpica.org/downloads
6 1) ACPI CA Core Subsystem:
8 Added a mechanism to defer _REG methods for some early-installed handlers.
9 Most user handlers should be installed before call to AcpiEnableSubsystem.
10 However, Event handlers and region handlers should be installed after
11 AcpiInitializeObjects. Override handlers for the "default" regions should be
12 installed early, however. This change executes all _REG methods for the
13 default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any
14 chicken/egg issues between them. ACPICA BZ 848.
16 Implemented an optimization for GPE detection. This optimization will simply
17 ignore GPE registers that contain no enabled GPEs -- there is no need to
18 read the register since this information is available internally. This
19 becomes more important on machines with a large GPE space. ACPICA bugzilla
20 884. Lin Ming. Suggestion from Joe Liu.
22 Removed all use of the highly unreliable FADT revision field. The revision
23 number in the FADT has been found to be completely unreliable and cannot be
24 trusted. Only the actual table length can be used to infer the version. This
25 change updates the ACPICA core and the disassembler so that both no longer
26 even look at the FADT version and instead depend solely upon the FADT
29 Fix an unresolved name issue for the no-debug and no-error-message source
30 generation cases. The _AcpiModuleName was left undefined in these cases, but
31 it is actually needed as a parameter to some interfaces. Define
32 _AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888.
34 Split several large files (makefiles and project files updated)
35 utglobal.c -> utdecode.c
36 dbcomds.c -> dbmethod.c dbnames.c
37 dsopcode.c -> dsargs.c dscontrol.c
39 aslanalyze.c -> aslbtypes.c aslwalks.c
41 Example Code and Data Size: These are the sizes for the OS-independent
42 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
43 debug version of the code includes the debug output trace mechanism and has
44 a much larger code and data size.
46 Previous Release (VC 9.0):
47 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
48 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
49 Current Release (VC 9.0):
50 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
51 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
53 2) iASL Compiler/Disassembler and Tools:
55 iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__.
56 These are useful C-style macros with the standard definitions. ACPICA
59 iASL/DTC: Added support for integer expressions and labels. Support for full
60 expressions for all integer fields in all ACPI tables. Support for labels in
61 "generic" portions of tables such as UEFI. See the iASL reference manual.
63 Debugger: Added a command to display the status of global handlers. The
64 "handlers" command will display op region, fixed event, and miscellaneous
65 global handlers. installation status -- and for op regions, whether default
66 or user-installed handler will be used.
68 iASL: Warn if reserved method incorrectly returns a value. Many predefined
69 names are defined such that they do not return a value. If implemented as a
70 method, issue a warning if such a name explicitly returns a value. ACPICA
73 iASL: Added detection of GPE method name conflicts. Detects a conflict where
74 there are two GPE methods of the form _Lxy and _Exy in the same scope. (For
75 example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848.
77 iASL/DTC: Fixed a couple input scanner issues with comments and line
78 numbers. Comment remover could get confused and miss a comment ending. Fixed
79 a problem with line counter maintenance.
81 iASL/DTC: Reduced the severity of some errors from fatal to error. There is
82 no need to abort on simple errors within a field definition.
84 Debugger: Simplified the output of the help command. All help output now in
85 a single screen, instead of help subcommands. ACPICA Bugzilla 897.
88 ----------------------------------------
89 12 January 2011. Summary of changes for version 20110112:
91 1) ACPI CA Core Subsystem:
93 Fixed a race condition between method execution and namespace walks that can
94 possibly cause a fault. The problem was apparently introduced in version
95 20100528 as a result of a performance optimization that reduces the number
97 namespace walks upon method exit by using the delete_namespace_subtree
98 function instead of the delete_namespace_by_owner function used previously.
99 Bug is a missing namespace lock in the delete_namespace_subtree function.
100 dana.myers@oracle.com
102 Fixed several issues and a possible fault with the automatic "serialized"
103 method support. History: This support changes a method to "serialized" on
105 fly if the method generates an AE_ALREADY_EXISTS error, indicating the
106 possibility that it cannot handle reentrancy. This fix repairs a couple of
107 issues seen in the field, especially on machines with many cores:
109 1) Delete method children only upon the exit of the last thread,
110 so as to not delete objects out from under other running threads
111 (and possibly causing a fault.)
112 2) Set the "serialized" bit for the method only upon the exit of the
113 Last thread, so as to not cause deadlock when running threads
115 3) Cleanup the use of the AML "MethodFlags" and internal method flags
116 so that there is no longer any confusion between the two.
118 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com.
120 Debugger: Now lock the namespace for duration of a namespace dump. Prevents
121 issues if the namespace is changing dynamically underneath the debugger.
122 Especially affects temporary namespace nodes, since the debugger displays
125 Updated the ordering of include files. The ACPICA headers should appear
126 before any compiler-specific headers (stdio.h, etc.) so that acenv.h can set
127 any necessary compiler-specific defines, etc. Affects the ACPI-related tools
130 Updated all ACPICA copyrights and signons to 2011. Added the 2011 copyright
131 to all module headers and signons, including the Linux header. This affects
132 virtually every file in the ACPICA core subsystem, iASL compiler, and all
135 Added project files for MS Visual Studio 2008 (VC++ 9.0). The original
136 project files for VC++ 6.0 are now obsolete. New project files can be found
137 under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for
140 Example Code and Data Size: These are the sizes for the OS-independent
141 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
142 debug version of the code includes the debug output trace mechanism and has
144 much larger code and data size.
146 Previous Release (VC 6.0):
147 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
148 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
149 Current Release (VC 9.0):
150 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
151 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
153 2) iASL Compiler/Disassembler and Tools:
155 iASL: Added generic data types to the Data Table compiler. Add "generic"
157 types such as UINT32, String, Unicode, etc., to simplify the generation of
158 platform-defined tables such as UEFI. Lin Ming.
160 iASL: Added listing support for the Data Table Compiler. Adds listing
162 (-l) to display actual binary output for each line of input code.
164 ----------------------------------------
165 09 December 2010. Summary of changes for version 20101209:
167 1) ACPI CA Core Subsystem:
169 Completed the major overhaul of the GPE support code that was begun in July
170 2010. Major features include: removal of _PRW execution in ACPICA (host
171 executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing,
172 changes to existing interfaces, simplification of GPE handler operation, and
173 a handful of new interfaces:
179 One new file, evxfgpe.c to consolidate all external GPE interfaces.
181 See the ACPICA Programmer Reference for full details and programming
182 information. See the new section 4.4 "General Purpose Event (GPE) Support"
183 for a full overview, and section 8.7 "ACPI General Purpose Event Management"
184 for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin Ming,
185 Bob Moore, Rafael Wysocki.
187 Implemented a new GPE feature for Windows compatibility, the "Implicit Wake
188 GPE Notify". This feature will automatically issue a Notify(2) on a device
189 when a Wake GPE is received if there is no corresponding GPE method or
190 handler. ACPICA BZ 870.
192 Fixed a problem with the Scope() operator during table parse and load phase.
193 During load phase (table load or method execution), the scope operator
195 not enter the target into the namespace. Instead, it should open a new scope
196 at the target location. Linux BZ 19462, ACPICA BZ 882.
198 Example Code and Data Size: These are the sizes for the OS-independent
199 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
200 debug version of the code includes the debug output trace mechanism and has
202 much larger code and data size.
205 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
206 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
208 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
209 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
211 2) iASL Compiler/Disassembler and Tools:
213 iASL: Relax the alphanumeric restriction on _CID strings. These strings are
214 "bus-specific" per the ACPI specification, and therefore any characters are
215 acceptable. The only checks that can be performed are for a null string and
216 perhaps for a leading asterisk. ACPICA BZ 886.
218 iASL: Fixed a problem where a syntax error that caused a premature EOF
219 condition on the source file emitted a very confusing error message. The
220 premature EOF is now detected correctly. ACPICA BZ 891.
222 Disassembler: Decode the AccessSize within a Generic Address Structure (byte
223 access, word access, etc.) Note, this field does not allow arbitrary bit
224 access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword.
226 New: AcpiNames utility - Example namespace dump utility. Shows an example of
227 ACPICA configuration for a minimal namespace dump utility. Uses table and
228 namespace managers, but no AML interpreter. Does not add any functionality
229 over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to
230 partition and configure ACPICA. ACPICA BZ 883.
232 AML Debugger: Increased the debugger buffer size for method return objects.
233 Was 4K, increased to 16K. Also enhanced error messages for debugger method
234 execution, including the buffer overflow case.
236 ----------------------------------------
237 13 October 2010. Summary of changes for version 20101013:
239 1) ACPI CA Core Subsystem:
241 Added support to clear the PCIEXP_WAKE event. When clearing ACPI events, now
242 clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via
243 HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880.
245 Changed the type of the predefined namespace object _TZ from ThermalZone to
246 Device. This was found to be confusing to the host software that processes
247 the various thermal zones, since _TZ is not really a ThermalZone. However, a
248 Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui
251 Added Windows Vista SP2 to the list of supported _OSI strings. The actual
252 string is "Windows 2006 SP2".
254 Eliminated duplicate code in AcpiUtExecute* functions. Now that the nsrepair
255 code automatically repairs _HID-related strings, this type of code is no
256 longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ 878.
258 Example Code and Data Size: These are the sizes for the OS-independent
259 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
260 debug version of the code includes the debug output trace mechanism and has
262 much larger code and data size.
265 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
266 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
268 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
269 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
271 2) iASL Compiler/Disassembler and Tools:
273 iASL: Implemented additional compile-time validation for _HID strings. The
274 non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the length
276 the string must be exactly seven or eight characters. For both _HID and _CID
277 strings, all characters must be alphanumeric. ACPICA BZ 874.
279 iASL: Allow certain "null" resource descriptors. Some BIOS code creates
280 descriptors that are mostly or all zeros, with the expectation that they
282 be filled in at runtime. iASL now allows this as long as there is a
284 tag" (name) associated with the descriptor, which gives the ASL a handle
285 needed to modify the descriptor. ACPICA BZ 873.
287 Added single-thread support to the generic Unix application OSL. Primarily
288 for iASL support, this change removes the use of semaphores in the single-
289 threaded ACPICA tools/applications - increasing performance. The
290 _MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED
291 option. ACPICA BZ 879.
293 AcpiExec: several fixes for the 64-bit version. Adds XSDT support and
295 for 64-bit DSDT/FACS addresses in the FADT. Lin Ming.
297 iASL: Moved all compiler messages to a new file, aslmessages.h.
299 ----------------------------------------
300 15 September 2010. Summary of changes for version 20100915:
302 1) ACPI CA Core Subsystem:
304 Removed the AcpiOsDerivePciId OSL interface. The various host
306 of this function were not OS-dependent and are now obsolete and can be
307 removed from all host OSLs. This function has been replaced by
308 AcpiHwDerivePciId, which is now part of the ACPICA core code.
309 AcpiHwDerivePciId has been implemented without recursion. Adds one new
310 module, hwpci.c. ACPICA BZ 857.
312 Implemented a dynamic repair for _HID and _CID strings. The following
313 problems are now repaired at runtime: 1) Remove a leading asterisk in the
314 string, and 2) the entire string is uppercased. Both repairs are in
315 accordance with the ACPI specification and will simplify host driver code.
318 The ACPI_THREAD_ID type is no longer configurable, internally it is now
319 always UINT64. This simplifies the ACPICA code, especially any printf
321 UINT64 is the only common data type for all thread_id types across all
322 operating systems. It is now up to the host OSL to cast the native thread_id
323 type to UINT64 before returning the value to ACPICA (via AcpiOsGetThreadId).
326 Added the ACPI_INLINE type to enhance the ACPICA configuration. The "inline"
327 keyword is not standard across compilers, and this type allows inline to be
328 configured on a per-compiler basis. Lin Ming.
330 Made the system global AcpiGbl_SystemAwakeAndRunning publically available.
331 Added an extern for this boolean in acpixf.h. Some hosts utilize this value
332 during suspend/restore operations. ACPICA BZ 869.
334 All code that implements error/warning messages with the "ACPI:" prefix has
335 been moved to a new module, utxferror.c.
337 The UINT64_OVERLAY was moved to utmath.c, which is the only module where it
338 is used. ACPICA BZ 829. Lin Ming, Bob Moore.
340 Example Code and Data Size: These are the sizes for the OS-independent
341 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
342 debug version of the code includes the debug output trace mechanism and has
344 much larger code and data size.
347 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
348 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
350 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
351 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
353 2) iASL Compiler/Disassembler and Tools:
355 iASL/Disassembler: Write ACPI errors to stderr instead of the output file.
356 This keeps the output files free of random error messages that may originate
357 from within the namespace/interpreter code. Used this opportunity to merge
358 all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ
359 866. Lin Ming, Bob Moore.
361 Tools: update some printfs for ansi warnings on size_t. Handle width change
362 of size_t on 32-bit versus 64-bit generations. Lin Ming.
364 ----------------------------------------
365 06 August 2010. Summary of changes for version 20100806:
367 1) ACPI CA Core Subsystem:
369 Designed and implemented a new host interface to the _OSI support code. This
370 will allow the host to dynamically add or remove multiple _OSI strings, as
371 well as install an optional handler that is called for each _OSI invocation.
372 Also added a new AML debugger command, 'osi' to display and modify the
374 _OSI string table, and test support in the AcpiExec utility. See the ACPICA
375 reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836.
377 AcpiInstallInterface - Add an _OSI string.
378 AcpiRemoveInterface - Delete an _OSI string.
379 AcpiInstallInterfaceHandler - Install optional _OSI handler.
381 AcpiOsValidateInterface - no longer used.
383 source/components/utilities/utosi.c
385 Re-introduced the support to enable multi-byte transfers for Embedded
386 Controller (EC) operation regions. A reported problem was found to be a bug
387 in the host OS, not in the multi-byte support. Previously, the maximum data
388 size passed to the EC operation region handler was a single byte. There are
389 often EC Fields larger than one byte that need to be transferred, and it is
390 useful for the EC driver to lock these as a single transaction. This change
391 enables single transfers larger than 8 bits. This effectively changes the
392 access to the EC space from ByteAcc to AnyAcc, and will probably require
393 changes to the host OS Embedded Controller driver to enable 16/32/64/256-bit
394 transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming.
396 Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The
397 prototype in acpiosxf.h had the output value pointer as a (void *).
398 It should be a (UINT64 *). This may affect some host OSL code.
400 Fixed a couple problems with the recently modified Linux makefiles for iASL
401 and AcpiExec. These new makefiles place the generated object files in the
402 local directory so that there can be no collisions between the files that
404 shared between them that are compiled with different options.
406 Example Code and Data Size: These are the sizes for the OS-independent
407 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
408 debug version of the code includes the debug output trace mechanism and has
410 much larger code and data size.
413 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
414 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
416 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
417 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
419 2) iASL Compiler/Disassembler and Tools:
421 iASL/Disassembler: Added a new option (-da, "disassemble all") to load the
422 namespace from and disassemble an entire group of AML files. Useful for
423 loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn) and
424 disassembling with one simple command. ACPICA BZ 865. Lin Ming.
426 iASL: Allow multiple invocations of -e option. This change allows multiple
427 uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ 834.
430 ----------------------------------------
431 02 July 2010. Summary of changes for version 20100702:
433 1) ACPI CA Core Subsystem:
435 Implemented several updates to the recently added GPE reference count
436 support. The model for "wake" GPEs is changing to give the host OS complete
437 control of these GPEs. Eventually, the ACPICA core will not execute any _PRW
438 methods, since the host already must execute them. Also, additional changes
439 were made to help ensure that the reference counts are kept in proper
440 synchronization with reality. Rafael J. Wysocki.
442 1) Ensure that GPEs are not enabled twice during initialization.
443 2) Ensure that GPE enable masks stay in sync with the reference count.
444 3) Do not inadvertently enable GPEs when writing GPE registers.
445 4) Remove the internal wake reference counter and add new AcpiGpeWakeup
446 interface. This interface will set or clear individual GPEs for wakeup.
447 5) Remove GpeType argument from AcpiEnable and AcpiDisable. These interfaces
448 are now used for "runtime" GPEs only.
450 Changed the behavior of the GPE install/remove handler interfaces. The GPE
452 no longer disabled during this process, as it was found to cause problems on
453 some machines. Rafael J. Wysocki.
455 Reverted a change introduced in version 20100528 to enable Embedded
456 Controller multi-byte transfers. This change was found to cause problems
458 Index Fields and possibly Bank Fields. It will be reintroduced when these
459 problems have been resolved.
461 Fixed a problem with references to Alias objects within Package Objects. A
462 reference to an Alias within the definition of a Package was not always
463 resolved properly. Aliases to objects like Processors, Thermal zones, etc.
464 were resolved to the actual object instead of a reference to the object as
466 should be. Package objects are only allowed to contain integer, string,
467 buffer, package, and reference objects. Redhat bugzilla 608648.
469 Example Code and Data Size: These are the sizes for the OS-independent
470 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
471 debug version of the code includes the debug output trace mechanism and has
473 much larger code and data size.
476 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
477 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
479 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
480 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
482 2) iASL Compiler/Disassembler and Tools:
484 iASL: Implemented a new compiler subsystem to allow definition and
485 compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc. These
486 are called "ACPI Data Tables", and the new compiler is the "Data Table
487 Compiler". This compiler is intended to simplify the existing error-prone
488 process of creating these tables for the BIOS, as well as allowing the
489 disassembly, modification, recompilation, and override of existing ACPI data
490 tables. See the iASL User Guide for detailed information.
492 iASL: Implemented a new Template Generator option in support of the new Data
493 Table Compiler. This option will create examples of all known ACPI tables
494 that can be used as the basis for table development. See the iASL
495 documentation and the -T option.
497 Disassembler and headers: Added support for the WDDT ACPI table (Watchdog
500 Updated the Linux makefiles for iASL and AcpiExec to place the generated
501 object files in the local directory so that there can be no collisions
502 between the shared files between them that are generated with different
505 Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec. Use
506 the #define __APPLE__ to enable this support.
508 ----------------------------------------
509 28 May 2010. Summary of changes for version 20100528:
511 Note: The ACPI 4.0a specification was released on April 5, 2010 and is
512 available at www.acpi.info. This is primarily an errata release.
514 1) ACPI CA Core Subsystem:
516 Undefined ACPI tables: We are looking for the definitions for the following
517 ACPI tables that have been seen in the field: ATKG, IEIT, GSCI.
519 Implemented support to enable multi-byte transfers for Embedded Controller
520 (EC) operation regions. Previously, the maximum data size passed to the EC
521 operation region handler was a single byte. There are often EC Fields larger
522 than one byte that need to be transferred, and it is useful for the EC
524 to lock these as a single transaction. This change enables single transfers
525 larger than 8 bits. This effectively changes the access to the EC space from
526 ByteAcc to AnyAcc, and will probably require changes to the host OS Embedded
527 Controller driver to enable 16/32/64/256-bit transfers in addition to 8-bit
528 transfers. Alexey Starikovskiy, Lin Ming
530 Implemented a performance enhancement for namespace search and access. This
531 change enhances the performance of namespace searches and walks by adding a
532 backpointer to the parent in each namespace node. On large namespaces, this
533 change can improve overall ACPI performance by up to 9X. Adding a pointer to
534 each namespace node increases the overall size of the internal namespace by
535 about 5%, since each namespace entry usually consists of both a namespace
536 node and an ACPI operand object. However, this is the first growth of the
537 namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy.
539 Implemented a performance optimization that reduces the number of namespace
540 walks. On control method exit, only walk the namespace if the method is
542 to have created namespace objects outside of its local scope. Previously,
544 entire namespace was traversed on each control method exit. This change can
545 improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob
548 Added support to truncate I/O addresses to 16 bits for Windows
550 Some ASL code has been seen in the field that inadvertently has bits set
551 above bit 15. This feature is optional and is enabled if the BIOS requests
552 any Windows OSI strings. It can also be enabled by the host OS. Matthew
555 Added support to limit the maximum time for the ASL Sleep() operator. To
556 prevent accidental deep sleeps, limit the maximum time that Sleep() will
557 actually sleep. Configurable, the default maximum is two seconds. ACPICA
560 Added run-time validation support for the _WDG and_WED Microsoft predefined
561 methods. These objects are defined by "Windows Instrumentation", and are not
562 part of the ACPI spec. ACPICA BZ 860.
564 Expanded all statistic counters used during namespace and device
565 initialization from 16 to 32 bits in order to support very large namespaces.
567 Replaced all instances of %d in printf format specifiers with %u since
569 all integers in ACPICA are unsigned.
571 Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly
575 Example Code and Data Size: These are the sizes for the OS-independent
576 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
577 debug version of the code includes the debug output trace mechanism and has
579 much larger code and data size.
582 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
583 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
585 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
586 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
588 2) iASL Compiler/Disassembler and Tools:
590 iASL: Added compiler support for the _WDG and_WED Microsoft predefined
591 methods. These objects are defined by "Windows Instrumentation", and are not
592 part of the ACPI spec. ACPICA BZ 860.
594 AcpiExec: added option to disable the memory tracking mechanism. The -dt
595 option will disable the tracking mechanism, which improves performance
598 AcpiExec: Restructured the command line options into -d (disable) and -e
601 ----------------------------------------
602 28 April 2010. Summary of changes for version 20100428:
604 1) ACPI CA Core Subsystem:
606 Implemented GPE support for dynamically loaded ACPI tables. For all GPEs,
607 including FADT-based and GPE Block Devices, execute any _PRW methods in the
608 new table, and process any _Lxx/_Exx GPE methods in the new table. Any
609 runtime GPE that is referenced by an _Lxx/_Exx method in the new table is
610 immediately enabled. Handles the FADT-defined GPEs as well as GPE Block
611 Devices. Provides compatibility with other ACPI implementations. Two new
612 files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob
615 Fixed a regression introduced in version 20100331 within the table manager
616 where initial table loading could fail. This was introduced in the fix for
617 AcpiReallocateRootTable. Also, renamed some of fields in the table manager
618 data structures to clarify their meaning and use.
620 Fixed a possible allocation overrun during internal object copy in
621 AcpiUtCopySimpleObject. The original code did not correctly handle the case
622 where the object to be copied was a namespace node. Lin Ming. ACPICA BZ 847.
624 Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a
625 possible access beyond end-of-allocation. Also, now fully validate
627 (size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847
629 Example Code and Data Size: These are the sizes for the OS-independent
630 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
631 debug version of the code includes the debug output trace mechanism and has
633 much larger code and data size.
636 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
637 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
639 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
640 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
642 2) iASL Compiler/Disassembler and Tools:
644 iASL: Implemented Min/Max/Len/Gran validation for address resource
645 descriptors. This change implements validation for the address fields that
646 are common to all address-type resource descriptors. These checks are
647 implemented: Checks for valid Min/Max, length within the Min/Max window,
648 valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as per
649 table 6-40 in the ACPI 4.0a specification. Also split the large
651 and aslrestype2.c files into five new files. ACPICA BZ 840.
653 iASL: Added support for the _Wxx predefined names. This support was missing
654 and these names were not recognized by the compiler as valid predefined
655 names. ACPICA BZ 851.
657 iASL: Added an error for all predefined names that are defined to return no
658 value and thus must be implemented as Control Methods. These include all of
659 the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous
660 names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856.
662 iASL: Implemented the -ts option to emit hex AML data in ASL format, as an
663 ASL Buffer. Allows ACPI tables to be easily included within ASL files, to be
664 dynamically loaded via the Load() operator. Also cleaned up output for the -
665 ta and -tc options. ACPICA BZ 853.
667 Tests: Added a new file with examples of extended iASL error checking.
668 Demonstrates the advanced error checking ability of the iASL compiler.
669 Available at tests/misc/badcode.asl.
671 ----------------------------------------
672 31 March 2010. Summary of changes for version 20100331:
674 1) ACPI CA Core Subsystem:
676 Completed a major update for the GPE support in order to improve support for
677 shared GPEs and to simplify both host OS and ACPICA code. Added a reference
678 count mechanism to support shared GPEs that require multiple device drivers.
679 Several external interfaces have changed. One external interface has been
680 removed. One new external interface was added. Most of the GPE external
681 interfaces now use the GPE spinlock instead of the events mutex (and the
682 Flags parameter for many GPE interfaces has been removed.) See the updated
683 ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore, Rafael
684 Wysocki. ACPICA BZ 831.
687 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus
693 Implemented write support for DataTable operation regions. These regions are
694 defined via the DataTableRegion() operator. Previously, only read support
696 implemented. The ACPI specification allows DataTableRegions to be
700 Implemented a new subsystem option to force a copy of the DSDT to local
701 memory. Optionally copy the entire DSDT to local memory (instead of simply
702 mapping it.) There are some (albeit very rare) BIOSs that corrupt or replace
703 the original DSDT, creating the need for this option. Default is FALSE, do
706 Implemented detection of a corrupted or replaced DSDT. This change adds
707 support to detect a DSDT that has been corrupted and/or replaced from
709 the OS (by firmware). This is typically catastrophic for the system, but has
710 been seen on some machines. Once this problem has been detected, the DSDT
711 copy option can be enabled via system configuration. Lin Ming, Bob Moore.
713 Fixed two problems with AcpiReallocateRootTable during the root table copy.
714 When copying the root table to the new allocation, the length used was
715 incorrect. The new size was used instead of the current table size, meaning
716 too much data was copied. Also, the count of available slots for ACPI tables
717 was not set correctly. Alexey Starikovskiy, Bob Moore.
719 Example Code and Data Size: These are the sizes for the OS-independent
720 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
721 debug version of the code includes the debug output trace mechanism and has
723 much larger code and data size.
726 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
727 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
729 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
730 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
732 2) iASL Compiler/Disassembler and Tools:
734 iASL: Implement limited typechecking for values returned from predefined
735 control methods. The type of any returned static (unnamed) object is now
736 validated. For example, Return(1). ACPICA BZ 786.
738 iASL: Fixed a predefined name object verification regression. Fixes a
740 introduced in version 20100304. An error is incorrectly generated if a
741 predefined name is declared as a static named object with a value defined
742 using the keywords "Zero", "One", or "Ones". Lin Ming.
744 iASL: Added Windows 7 support for the -g option (get local ACPI tables) by
745 reducing the requested registry access rights. ACPICA BZ 842.
747 Disassembler: fixed a possible fault when generating External() statements.
748 Introduced in commit ae7d6fd: Properly handle externals with parent-prefix
749 (carat). Fixes a string length allocation calculation. Lin Ming.
751 ----------------------------------------
752 04 March 2010. Summary of changes for version 20100304:
754 1) ACPI CA Core Subsystem:
756 Fixed a possible problem with the AML Mutex handling function
757 AcpiExReleaseMutex where the function could fault under the very rare
758 condition when the interpreter has blocked, the interpreter lock is
760 the interpreter is then reentered via the same thread, and attempts to
761 acquire an AML mutex that was previously acquired. FreeBSD report 140979.
765 Implemented additional configuration support for the AML "Debug Object".
766 Output from the debug object can now be enabled via a global variable,
767 AcpiGbl_EnableAmlDebugObject. This will assist with remote machine
769 This debug output is now available in the release version of ACPICA instead
770 of just the debug version. Also, the entire debug output module can now be
771 configured out of the ACPICA build if desired. One new file added,
772 executer/exdebug.c. Lin Ming, Bob Moore.
774 Added header support for the ACPI MCHI table (Management Controller Host
775 Interface Table). This table was added in ACPI 4.0, but the defining
777 has only recently become available.
779 Standardized output of integer values for ACPICA warnings/errors. Always use
780 0x prefix for hex output, always use %u for unsigned integer decimal output.
781 Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about 400
782 invocations.) These invocations were converted from the original
783 ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835.
785 Example Code and Data Size: These are the sizes for the OS-independent
786 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
787 debug version of the code includes the debug output trace mechanism and has
789 much larger code and data size.
792 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
793 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
795 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
796 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
798 2) iASL Compiler/Disassembler and Tools:
800 iASL: Implemented typechecking support for static (non-control method)
801 predefined named objects that are declared with the Name() operator. For
802 example, the type of this object is now validated to be of type Integer:
803 Name(_BBN, 1). This change migrates the compiler to using the core
805 name table instead of maintaining a local version. Added a new file,
806 aslpredef.c. ACPICA BZ 832.
808 Disassembler: Added support for the ACPI 4.0 MCHI table.
810 ----------------------------------------
811 21 January 2010. Summary of changes for version 20100121:
813 1) ACPI CA Core Subsystem:
815 Added the 2010 copyright to all module headers and signons. This affects
816 virtually every file in the ACPICA core subsystem, the iASL compiler, the
817 tools/utilities, and the test suites.
819 Implemented a change to the AcpiGetDevices interface to eliminate
821 invocations of the _STA method. In the case where a specific _HID is
822 requested, do not run _STA until a _HID match is found. This eliminates
823 potentially dozens of _STA calls during a search for a particular
825 which in turn can improve boot times. ACPICA BZ 828. Lin Ming.
827 Implemented an additional repair for predefined method return values.
829 to repair unexpected NULL elements within returned Package objects. Create
831 Integer of value zero, a NULL String, or a zero-length Buffer as
833 ACPICA BZ 818. Lin Ming, Bob Moore.
835 Removed the obsolete ACPI_INTEGER data type. This type was introduced as the
836 code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0 (with
837 64-bit AML integers). It is now obsolete and this change removes it from the
838 ACPICA code base, replaced by UINT64. The original typedef has been retained
839 for now for compatibility with existing device driver code. ACPICA BZ 824.
841 Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field in
842 the parse tree object.
844 Added additional warning options for the gcc-4 generation. Updated the
846 accordingly. This includes some code restructuring to eliminate unreachable
847 code, elimination of some gotos, elimination of unused return values, some
848 additional casting, and removal of redundant declarations.
850 Example Code and Data Size: These are the sizes for the OS-independent
851 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
852 debug version of the code includes the debug output trace mechanism and has
854 much larger code and data size.
857 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
858 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
860 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
861 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
863 2) iASL Compiler/Disassembler and Tools:
865 No functional changes for this release.
867 ----------------------------------------
868 14 December 2009. Summary of changes for version 20091214:
870 1) ACPI CA Core Subsystem:
872 Enhanced automatic data type conversions for predefined name repairs. This
873 change expands the automatic repairs/conversions for predefined name return
874 values to make Integers, Strings, and Buffers fully interchangeable. Also, a
875 Buffer can be converted to a Package of Integers if necessary. The
877 module was completely restructured. Lin Ming, Bob Moore.
879 Implemented automatic removal of null package elements during predefined
881 repairs. This change will automatically remove embedded and trailing NULL
882 package elements from returned package objects that are defined to contain a
883 variable number of sub-packages. The driver is then presented with a package
884 with no null elements to deal with. ACPICA BZ 819.
886 Implemented a repair for the predefined _FDE and _GTM names. The expected
887 return value for both names is a Buffer of 5 DWORDs. This repair fixes two
888 possible problems (both seen in the field), where a package of integers is
889 returned, or a buffer of BYTEs is returned. With assistance from Jung-uk
892 Implemented additional module-level code support. This change will properly
893 execute module-level code that is not at the root of the namespace (under a
894 Device object, etc.). Now executes the code within the current scope instead
895 of the root. ACPICA BZ 762. Lin Ming.
897 Fixed possible mutex acquisition errors when running _REG methods. Fixes a
898 problem where mutex errors can occur when running a _REG method that is in
899 the same scope as a method-defined operation region or an operation region
900 under a module-level IF block. This type of code is rare, so the problem has
901 not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore.
903 Fixed a possible memory leak during module-level code execution. An object
904 could be leaked for each block of executed module-level code if the
905 interpreter slack mode is enabled This change deletes any implicitly
907 object from the module-level code block. Lin Ming.
909 Removed messages for successful predefined repair(s). The repair mechanism
910 was considered too wordy. Now, messages are only unconditionally emitted if
911 the return object cannot be repaired. Existing messages for successful
912 repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ 827.
914 Example Code and Data Size: These are the sizes for the OS-independent
915 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
916 debug version of the code includes the debug output trace mechanism and has
918 much larger code and data size.
921 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
922 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
924 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
925 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
927 2) iASL Compiler/Disassembler and Tools:
929 iASL: Fixed a regression introduced in 20091112 where intermediate .SRC
931 were no longer automatically removed at the termination of the compile.
933 acpiexec: Implemented the -f option to specify default region fill value.
934 This option specifies the value used to initialize buffers that simulate
935 operation regions. Default value is zero. Useful for debugging problems that
936 depend on a specific initial value for a region or field.
938 ----------------------------------------
939 12 November 2009. Summary of changes for version 20091112:
941 1) ACPI CA Core Subsystem:
943 Implemented a post-order callback to AcpiWalkNamespace. The existing
944 interface only has a pre-order callback. This change adds an additional
945 parameter for a post-order callback which will be more useful for bus scans.
946 ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference.
948 Modified the behavior of the operation region memory mapping cache for
949 SystemMemory. Ensure that the memory mappings created for operation regions
950 do not cross 4K page boundaries. Crossing a page boundary while mapping
951 regions can cause kernel warnings on some hosts if the pages have different
952 attributes. Such regions are probably BIOS bugs, and this is the workaround.
953 Linux BZ 14445. Lin Ming.
955 Implemented an automatic repair for predefined methods that must return
956 sorted lists. This change will repair (by sorting) packages returned by
958 _PSS, and _TSS. Drivers can now assume that the packages are correctly
960 and do not contain NULL package elements. Adds one new file,
961 namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore.
963 Fixed a possible fault during predefined name validation if a return Package
964 object contains NULL elements. Also adds a warning if a NULL element is
965 followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement
967 include repair or removal of all such NULL elements where possible.
969 Implemented additional module-level executable AML code support. This change
970 will execute module-level code that is not at the root of the namespace
971 (under a Device object, etc.) at table load time. Module-level executable
973 code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming.
975 Implemented a new internal function to create Integer objects. This function
976 simplifies miscellaneous object creation code. ACPICA BZ 823.
978 Reduced the severity of predefined repair messages, Warning to Info. Since
979 the object was successfully repaired, a warning is too severe. Reduced to an
980 info message for now. These messages may eventually be changed to debug-
984 Example Code and Data Size: These are the sizes for the OS-independent
985 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
986 debug version of the code includes the debug output trace mechanism and has
988 much larger code and data size.
991 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
992 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
994 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
995 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
997 2) iASL Compiler/Disassembler and Tools:
999 iASL: Implemented Switch() with While(1) so that Break works correctly. This
1000 change correctly implements the Switch operator with a surrounding While(1)
1001 so that the Break operator works as expected. ACPICA BZ 461. Lin Ming.
1003 iASL: Added a message if a package initializer list is shorter than package
1004 length. Adds a new remark for a Package() declaration if an initializer list
1005 exists, but is shorter than the declared length of the package. Although
1006 technically legal, this is probably a coding error and it is seen in the
1007 field. ACPICA BZ 815. Lin Ming, Bob Moore.
1009 iASL: Fixed a problem where the compiler could fault after the maximum
1011 of errors was reached (200).
1013 acpixtract: Fixed a possible warning for pointer cast if the compiler
1015 level set very high.
1017 ----------------------------------------
1018 13 October 2009. Summary of changes for version 20091013:
1020 1) ACPI CA Core Subsystem:
1022 Fixed a problem where an Operation Region _REG method could be executed more
1023 than once. If a custom address space handler is installed by the host before
1024 the "initialize operation regions" phase of the ACPICA initialization, any
1025 _REG methods for that address space could be executed twice. This change
1026 fixes the problem. ACPICA BZ 427. Lin Ming.
1028 Fixed a possible memory leak for the Scope() ASL operator. When the exact
1029 invocation of "Scope(\)" is executed (change scope to root), one internal
1030 operand object was leaked. Lin Ming.
1032 Implemented a run-time repair for the _MAT predefined method. If the _MAT
1033 return value is defined as a Field object in the AML, and the field
1034 size is less than or equal to the default width of an integer (32 or
1036 can incorrectly return an Integer instead of a Buffer. ACPICA now
1037 automatically repairs this problem. ACPICA BZ 810.
1039 Implemented a run-time repair for the _BIF and _BIX predefined methods. The
1040 "OEM Information" field is often incorrectly returned as an Integer with
1041 value zero if the field is not supported by the platform. This is due to an
1042 ambiguity in the ACPI specification. The field should always be a string.
1043 ACPICA now automatically repairs this problem by returning a NULL string
1044 within the returned Package. ACPICA BZ 807.
1046 Example Code and Data Size: These are the sizes for the OS-independent
1047 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1048 debug version of the code includes the debug output trace mechanism and has
1050 much larger code and data size.
1053 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
1054 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
1056 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
1057 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
1059 2) iASL Compiler/Disassembler and Tools:
1061 Disassembler: Fixed a problem where references to external symbols that
1062 contained one or more parent-prefixes (carats) were not handled correctly,
1063 possibly causing a fault. ACPICA BZ 806. Lin Ming.
1065 Disassembler: Restructured the code so that all functions that handle
1066 external symbols are in a single module. One new file is added,
1069 AML Debugger: Added a max count argument for the Batch command (which
1070 executes multiple predefined methods within the namespace.)
1072 iASL: Updated the compiler documentation (User Reference.) Available at
1073 http://www.acpica.org/documentation/. ACPICA BZ 750.
1075 AcpiXtract: Updated for Lint and other formatting changes. Close all open
1078 ----------------------------------------
1079 03 September 2009. Summary of changes for version 20090903:
1081 1) ACPI CA Core Subsystem:
1083 For Windows Vista compatibility, added the automatic execution of an _INI
1084 method located at the namespace root (\_INI). This method is executed at
1085 table load time. This support is in addition to the automatic execution of
1086 \_SB._INI. Lin Ming.
1088 Fixed a possible memory leak in the interpreter for AML package objects if
1089 the package initializer list is longer than the defined size of the package.
1090 This apparently can only happen if the BIOS changes the package size on the
1091 fly (seen in a _PSS object), as ASL compilers do not allow this. The
1092 interpreter will truncate the package to the defined size (and issue an
1094 message), but previously could leave the extra objects undeleted if they
1096 pre-created during the argument processing (such is the case if the package
1097 consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805.
1099 Fixed a problem seen when a Buffer or String is stored to itself via ASL.
1100 This has been reported in the field. Previously, ACPICA would zero out the
1101 buffer/string. Now, the operation is treated as a noop. Provides Windows
1102 compatibility. ACPICA BZ 803. Lin Ming.
1104 Removed an extraneous error message for ASL constructs of the form
1105 Store(LocalX,LocalX) when LocalX is uninitialized. These curious statements
1106 are seen in many BIOSs and are once again treated as NOOPs and no error is
1107 emitted when they are encountered. ACPICA BZ 785.
1109 Fixed an extraneous warning message if a _DSM reserved method returns a
1110 Package object. _DSM can return any type of object, so validation on the
1111 return type cannot be performed. ACPICA BZ 802.
1113 Example Code and Data Size: These are the sizes for the OS-independent
1114 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1115 debug version of the code includes the debug output trace mechanism and has
1117 much larger code and data size.
1120 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
1121 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
1123 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
1124 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
1126 2) iASL Compiler/Disassembler and Tools:
1128 iASL: Fixed a problem with the use of the Alias operator and Resource
1129 Templates. The correct alias is now constructed and no error is emitted.
1132 iASL: Implemented the -I option to specify additional search directories for
1133 include files. Allows multiple additional search paths for include files.
1134 Directories are searched in the order specified on the command line (after
1135 the local directory is searched.) ACPICA BZ 800.
1137 iASL: Fixed a problem where the full pathname for include files was not
1138 emitted for warnings/errors. This caused the IDE support to not work
1139 properly. ACPICA BZ 765.
1141 iASL: Implemented the -@ option to specify a Windows-style response file
1142 containing additional command line options. ACPICA BZ 801.
1144 AcpiExec: Added support to load multiple AML files simultaneously (such as a
1145 DSDT and multiple SSDTs). Also added support for wildcards within the AML
1146 pathname. These features allow all machine tables to be easily loaded and
1147 debugged together. ACPICA BZ 804.
1149 Disassembler: Added missing support for disassembly of HEST table Error Bank
1152 ----------------------------------------
1153 30 July 2009. Summary of changes for version 20090730:
1155 The ACPI 4.0 implementation for ACPICA is complete with this release.
1157 1) ACPI CA Core Subsystem:
1159 ACPI 4.0: Added header file support for all new and changed ACPI tables.
1160 Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are new
1161 for ACPI 4.0, but have previously been supported in ACPICA are: CPEP, BERT,
1162 EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT. There
1163 have been some ACPI 4.0 changes to other existing tables. Split the large
1164 actbl1.h header into the existing actbl2.h header. ACPICA BZ 774.
1166 ACPI 4.0: Implemented predefined name validation for all new names. There
1168 31 new names in ACPI 4.0. The predefined validation module was split into
1170 files. The new file is namespace/nsrepair.c. ACPICA BZ 770.
1172 Implemented support for so-called "module-level executable code". This is
1173 executable AML code that exists outside of any control method and is
1175 to be executed at table load time. Although illegal since ACPI 2.0, this
1177 of code still exists and is apparently still being created. Blocks of this
1178 code are now detected and executed as intended. Currently, the code blocks
1179 must exist under either an If, Else, or While construct; these are the
1180 typical cases seen in the field. ACPICA BZ 762. Lin Ming.
1182 Implemented an automatic dynamic repair for predefined names that return
1183 nested Package objects. This applies to predefined names that are defined to
1184 return a variable-length Package of sub-packages. If the number of sub-
1185 packages is one, BIOS code is occasionally seen that creates a simple single
1186 package with no sub-packages. This code attempts to fix the problem by
1187 wrapping a new package object around the existing package. These methods can
1188 be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA BZ
1191 Fixed a regression introduced in 20090625 for the AcpiGetDevices interface.
1192 The _HID/_CID matching was broken and no longer matched IDs correctly.
1196 Fixed a problem with AcpiReset where the reset would silently fail if the
1197 register was one of the protected I/O ports. AcpiReset now bypasses the port
1198 validation mechanism. This may eventually be driven into the AcpiRead/Write
1201 Fixed a regression related to the recent update of the AcpiRead/Write
1202 interfaces. A sleep/suspend could fail if the optional PM2 Control register
1203 does not exist during an attempt to write the Bus Master Arbitration bit.
1204 (However, some hosts already delete the code that writes this bit, and the
1205 code may in fact be obsolete at this date.) ACPICA BZ 799.
1207 Fixed a problem where AcpiTerminate could fault if inadvertently called
1209 in succession. ACPICA BZ 795.
1211 Example Code and Data Size: These are the sizes for the OS-independent
1212 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1213 debug version of the code includes the debug output trace mechanism and has
1215 much larger code and data size.
1218 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
1219 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
1221 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
1222 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
1224 2) iASL Compiler/Disassembler and Tools:
1226 ACPI 4.0: Implemented disassembler support for all new ACPI tables and
1227 changes to existing tables. ACPICA BZ 775.
1229 ----------------------------------------
1230 25 June 2009. Summary of changes for version 20090625:
1232 The ACPI 4.0 Specification was released on June 16 and is available at
1233 www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will
1234 continue for the next few releases.
1236 1) ACPI CA Core Subsystem:
1238 ACPI 4.0: Implemented interpreter support for the IPMI operation region
1239 address space. Includes support for bi-directional data buffers and an IPMI
1240 address space handler (to be installed by an IPMI device driver.) ACPICA BZ
1243 ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. Includes
1244 support in both the header files and the disassembler.
1246 Completed a major update for the AcpiGetObjectInfo external interface.
1248 - Support for variable, unlimited length HID, UID, and CID strings.
1249 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, etc.)
1250 - Call the _SxW power methods on behalf of a device object.
1251 - Determine if a device is a PCI root bridge.
1252 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO.
1253 These changes will require an update to all callers of this interface. See
1254 the updated ACPICA Programmer Reference for details. One new source file has
1255 been added - utilities/utids.c. ACPICA BZ 368, 780.
1257 Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit
1258 transfers. The Value parameter has been extended from 32 bits to 64 bits in
1259 order to support new ACPI 4.0 tables. These changes will require an update
1261 all callers of these interfaces. See the ACPICA Programmer Reference for
1262 details. ACPICA BZ 768.
1264 Fixed several problems with AcpiAttachData. The handler was not invoked when
1265 the host node was deleted. The data sub-object was not automatically deleted
1266 when the host node was deleted. The interface to the handler had an unused
1267 parameter, this was removed. ACPICA BZ 778.
1269 Enhanced the function that dumps ACPI table headers. All non-printable
1270 characters in the string fields are now replaced with '?' (Signature, OemId,
1271 OemTableId, and CompilerId.) ACPI tables with non-printable characters in
1272 these fields are occasionally seen in the field. ACPICA BZ 788.
1274 Fixed a problem with predefined method repair code where the code that
1275 attempts to repair/convert an object of incorrect type is only executed on
1276 the first time the predefined method is called. The mechanism that disables
1277 warnings on subsequent calls was interfering with the repair mechanism.
1280 Fixed a possible memory leak in the predefined validation/repair code when a
1281 buffer is automatically converted to an expected string object.
1283 Removed obsolete 16-bit files from the distribution and from the current git
1284 tree head. ACPICA BZ 776.
1286 Example Code and Data Size: These are the sizes for the OS-independent
1287 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1288 debug version of the code includes the debug output trace mechanism and has
1290 much larger code and data size.
1293 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
1294 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
1296 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
1297 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
1299 2) iASL Compiler/Disassembler and Tools:
1301 ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI
1302 operation region keyword. ACPICA BZ 771, 772. Lin Ming.
1304 ACPI 4.0: iASL - implemented compile-time validation support for all new
1305 predefined names and control methods (31 total). ACPICA BZ 769.
1307 ----------------------------------------
1308 21 May 2009. Summary of changes for version 20090521:
1310 1) ACPI CA Core Subsystem:
1312 Disabled the preservation of the SCI enable bit in the PM1 control register.
1313 The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification to
1315 a "preserved" bit - "OSPM always preserves this bit position", section
1316 4.7.3.2.1. However, some machines fail if this bit is in fact preserved
1317 because the bit needs to be explicitly set by the OS as a workaround. No
1318 machines fail if the bit is not preserved. Therefore, ACPICA no longer
1319 attempts to preserve this bit.
1321 Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or
1322 incorrectly formed _PRT package could cause a fault. Added validation to
1323 ensure that each package element is actually a sub-package.
1325 Implemented a new interface to install or override a single control method,
1326 AcpiInstallMethod. This interface is useful when debugging in order to
1328 an existing method or to install a missing method without having to override
1329 the entire ACPI table. See the ACPICA Programmer Reference for use and
1330 examples. Lin Ming, Bob Moore.
1332 Fixed several reference count issues with the DdbHandle object that is
1333 created from a Load or LoadTable operator. Prevent premature deletion of the
1334 object. Also, mark the object as invalid once the table has been unloaded.
1335 This is needed because the handle itself may not be deleted after the table
1336 unload, depending on whether it has been stored in a named object by the
1339 Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple
1340 mutexes of the same sync level are acquired but then not released in strict
1341 opposite order, the internally maintained Current Sync Level becomes
1343 and can cause subsequent execution errors. ACPICA BZ 471.
1345 Changed the allowable release order for ASL mutex objects. The ACPI 4.0
1346 specification has been changed to make the SyncLevel for mutex objects more
1347 useful. When releasing a mutex, the SyncLevel of the mutex must now be the
1348 same as the current sync level. This makes more sense than the previous rule
1349 (SyncLevel less than or equal). This change updates the code to match the
1352 Fixed a problem with the local version of the AcpiOsPurgeCache function. The
1353 (local) cache must be locked during all cache object deletions. Andrew
1356 Updated the Load operator to use operation region interfaces. This replaces
1357 direct memory mapping with region access calls. Now, all region accesses go
1358 through the installed region handler as they should.
1360 Simplified and optimized the NsGetNextNode function. Reduced parameter count
1361 and reduced code for this frequently used function.
1363 Example Code and Data Size: These are the sizes for the OS-independent
1364 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1365 debug version of the code includes the debug output trace mechanism and has
1367 much larger code and data size.
1370 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
1371 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
1373 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
1374 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
1376 2) iASL Compiler/Disassembler and Tools:
1378 Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some problems
1379 with sub-table disassembly and handling invalid sub-tables. Attempt recovery
1380 after an invalid sub-table ID.
1382 ----------------------------------------
1383 22 April 2009. Summary of changes for version 20090422:
1385 1) ACPI CA Core Subsystem:
1387 Fixed a compatibility issue with the recently released I/O port protection
1388 mechanism. For windows compatibility, 1) On a port protection violation,
1389 simply ignore the request and do not return an exception (allow the control
1390 method to continue execution.) 2) If only part of the request overlaps a
1391 protected port, read/write the individual ports that are not protected.
1395 Enhanced the execution of the ASL/AML BreakPoint operator so that it
1397 breaks into the AML debugger if the debugger is present. This matches the
1398 ACPI-defined behavior.
1400 Fixed several possible warnings related to the use of the configurable
1401 ACPI_THREAD_ID. This type can now be configured as either an integer or a
1402 pointer with no warnings. Also fixes several warnings in printf-like
1403 statements for the 64-bit build when the type is configured as a pointer.
1406 Fixed a number of possible warnings when compiling with gcc 4+ (depending on
1407 warning options.) Examples include printf formats, aliasing, unused globals,
1408 missing prototypes, missing switch default statements, use of non-ANSI
1409 library functions, use of non-ANSI constructs. See generate/unix/Makefile
1411 a list of warning options used with gcc 3 and 4. ACPICA BZ 735.
1413 Example Code and Data Size: These are the sizes for the OS-independent
1414 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1415 debug version of the code includes the debug output trace mechanism and has
1417 much larger code and data size.
1420 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
1421 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
1423 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
1424 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
1426 2) iASL Compiler/Disassembler and Tools:
1428 iASL: Fixed a generation warning from Bison 2.3 and fixed several warnings
1432 iASL: Fixed a problem where the Unix/Linux versions of the compiler could
1434 correctly digest Windows/DOS formatted files (with CR/LF).
1436 iASL: Added a new option for "quiet mode" (-va) that produces only the
1437 compilation summary, not individual errors and warnings. Useful for large
1440 AcpiExec: Implemented a new option (-z) to enable a forced semaphore/mutex
1441 timeout that can be used to detect hang conditions during execution of AML
1442 code (includes both internal semaphores and AML-defined mutexes and events.)
1444 Added new makefiles for the generation of acpica in a generic unix-like
1445 environment. These makefiles are intended to generate the acpica tools and
1446 utilities from the original acpica git source tree structure.
1448 Test Suites: Updated and cleaned up the documentation files. Updated the
1449 copyrights to 2009, affecting all source files. Use the new version of iASL
1450 with quiet mode. Increased the number of available semaphores in the Windows
1451 OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, added
1452 an alternate implementation of the semaphore timeout to allow aslts to
1453 execute fully on Cygwin.
1455 ----------------------------------------
1456 20 March 2009. Summary of changes for version 20090320:
1458 1) ACPI CA Core Subsystem:
1460 Fixed a possible race condition between AcpiWalkNamespace and dynamic table
1461 unloads. Added a reader/writer locking mechanism to allow multiple
1463 namespace walks (readers), but block a dynamic table unload until it can
1465 exclusive write access to the namespace. This fixes a problem where a table
1466 unload could (possibly catastrophically) delete the portion of the namespace
1467 that is currently being examined by a walk. Adds a new file, utlock.c, that
1468 implements the reader/writer lock mechanism. ACPICA BZ 749.
1470 Fixed a regression introduced in version 20090220 where a change to the FADT
1471 handling could cause the ACPICA subsystem to access non-existent I/O ports.
1473 Modified the handling of FADT register and table (FACS/DSDT) addresses. The
1474 FADT can contain both 32-bit and 64-bit versions of these addresses.
1475 Previously, the 64-bit versions were favored, meaning that if both 32 and 64
1476 versions were valid, but not equal, the 64-bit version was used. This was
1477 found to cause some machines to fail. Now, in this case, the 32-bit version
1478 is used instead. This now matches the Windows behavior.
1480 Implemented a new mechanism to protect certain I/O ports. Provides Microsoft
1481 compatibility and protects the standard PC I/O ports from access via AML
1482 code. Adds a new file, hwvalid.c
1484 Fixed a possible extraneous warning message from the FADT support. The
1485 message warns of a 32/64 length mismatch between the legacy and GAS
1486 definitions for a register.
1488 Removed the obsolete AcpiOsValidateAddress OSL interface. This interface is
1489 made obsolete by the port protection mechanism above. It was previously used
1490 to validate the entire address range of an operation region, which could be
1491 incorrect if the range included illegal ports, but fields within the
1492 operation region did not actually access those ports. Validation is now
1493 performed on a per-field basis instead of the entire region.
1495 Modified the handling of the PM1 Status Register ignored bit (bit 11.)
1496 Ignored bits must be "preserved" according to the ACPI spec. Usually, this
1497 means a read/modify/write when writing to the register. However, for status
1498 registers, writing a one means clear the event. Writing a zero means
1500 the event (do not clear.) This behavior is clarified in the ACPI 4.0 spec,
1501 and the ACPICA code now simply always writes a zero to the ignored bit.
1503 Modified the handling of ignored bits for the PM1 A/B Control Registers. As
1504 per the ACPI specification, for the control registers, preserve
1505 (read/modify/write) all bits that are defined as either reserved or ignored.
1507 Updated the handling of write-only bits in the PM1 A/B Control Registers.
1508 When reading the register, zero the write-only bits as per the ACPI spec.
1509 ACPICA BZ 443. Lin Ming.
1511 Removed "Linux" from the list of supported _OSI strings. Linux no longer
1512 wants to reply true to this request. The Windows strings are the only paths
1513 through the AML that are tested and known to work properly.
1516 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
1517 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
1519 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
1520 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
1522 2) iASL Compiler/Disassembler and Tools:
1524 Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c and
1527 ----------------------------------------
1528 20 February 2009. Summary of changes for version 20090220:
1530 1) ACPI CA Core Subsystem:
1532 Optimized the ACPI register locking. Removed locking for reads from the ACPI
1533 bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock is
1534 not required when reading the single-bit registers. The
1535 AcpiGetRegisterUnlocked function is no longer needed and has been removed.
1536 This will improve performance for reads on these registers. ACPICA BZ 760.
1538 Fixed the parameter validation for AcpiRead/Write. Now return
1539 AE_BAD_PARAMETER if the input register pointer is null, and AE_BAD_ADDRESS
1541 the register has an address of zero. Previously, these cases simply returned
1542 AE_OK. For optional registers such as PM1B status/enable/control, the caller
1543 should check for a valid register address before calling. ACPICA BZ 748.
1545 Renamed the external ACPI bit register access functions. Renamed
1546 AcpiGetRegister and AcpiSetRegister to clarify the purpose of these
1547 functions. The new names are AcpiReadBitRegister and AcpiWriteBitRegister.
1548 Also, restructured the code for these functions by simplifying the code path
1549 and condensing duplicate code to reduce code size.
1551 Added new functions to transparently handle the possibly split PM1 A/B
1552 registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two functions
1553 now handle the split registers for PM1 Status, Enable, and Control. ACPICA
1557 Added a function to handle the PM1 control registers, AcpiHwWritePm1Control.
1558 This function writes both of the PM1 control registers (A/B). These
1560 are different than the PM1 A/B status and enable registers in that different
1561 values can be written to the A/B registers. Most notably, the SLP_TYP bits
1562 can be different, as per the values returned from the _Sx predefined
1565 Removed an extra register write within AcpiHwClearAcpiStatus. This function
1566 was writing an optional PM1B status register twice. The existing call to the
1567 low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 A/B
1568 register. ACPICA BZ 751.
1570 Split out the PM1 Status registers from the FADT. Added new globals for
1572 registers (A/B), similar to the way the PM1 Enable registers are handled.
1573 Instead of overloading the FADT Event Register blocks. This makes the code
1574 clearer and less prone to error.
1576 Fixed the warning message for when the platform contains too many ACPI
1578 for the default size of the global root table data structure. The
1580 for the truncation value was incorrect.
1582 Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this
1583 obsolete macro, since it is now a simple reference to ->common.type. There
1584 were about 150 invocations of the macro across 41 files. ACPICA BZ 755.
1586 Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as
1587 TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to
1588 simply SLEEP_TYPE. ACPICA BZ 754.
1590 Conditionally compile the AcpiSetFirmwareWakingVector64 function. This
1591 function is only needed on 64-bit host operating systems and is thus not
1592 included for 32-bit hosts.
1594 Debug output: print the input and result for invocations of the _OSI
1596 control method via the ACPI_LV_INFO debug level. Also, reduced some of the
1597 verbosity of this debug level. Len Brown.
1599 Example Code and Data Size: These are the sizes for the OS-independent
1600 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1601 debug version of the code includes the debug output trace mechanism and has
1603 much larger code and data size.
1606 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
1607 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
1609 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
1610 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
1612 2) iASL Compiler/Disassembler and Tools:
1614 Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the
1615 various legal performance profiles.
1617 ----------------------------------------
1618 23 January 2009. Summary of changes for version 20090123:
1620 1) ACPI CA Core Subsystem:
1622 Added the 2009 copyright to all module headers and signons. This affects
1623 virtually every file in the ACPICA core subsystem, the iASL compiler, and
1624 the tools/utilities.
1626 Implemented a change to allow the host to override any ACPI table, including
1627 dynamically loaded tables. Previously, only the DSDT could be replaced by
1629 host. With this change, the AcpiOsTableOverride interface is called for each
1630 table found in the RSDT/XSDT during ACPICA initialization, and also whenever
1631 a table is dynamically loaded via the AML Load operator.
1633 Updated FADT flag definitions, especially the Boot Architecture flags.
1635 Debugger: For the Find command, automatically pad the input ACPI name with
1636 underscores if the name is shorter than 4 characters. This enables a match
1637 with the actual namespace entry which is itself padded with underscores.
1639 Example Code and Data Size: These are the sizes for the OS-independent
1640 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1641 debug version of the code includes the debug output trace mechanism and has
1643 much larger code and data size.
1646 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
1647 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
1649 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
1650 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
1652 2) iASL Compiler/Disassembler and Tools:
1654 Fix build error under Bison-2.4.
1656 Dissasembler: Enhanced FADT support. Added decoding of the Boot Architecture
1657 flags. Now decode all flags, regardless of the FADT version. Flag output
1658 includes the FADT version which first defined each flag.
1660 The iASL -g option now dumps the RSDT to a file (in addition to the FADT and
1661 DSDT). Windows only.
1663 ----------------------------------------
1664 04 December 2008. Summary of changes for version 20081204:
1666 1) ACPI CA Core Subsystem:
1668 The ACPICA Programmer Reference has been completely updated and revamped for
1669 this release. This includes updates to the external interfaces, OSL
1670 interfaces, the overview sections, and the debugger reference.
1672 Several new ACPICA interfaces have been implemented and documented in the
1673 programmer reference:
1674 AcpiReset - Writes the reset value to the FADT-defined reset register.
1675 AcpiDisableAllGpes - Disable all available GPEs.
1676 AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs.
1677 AcpiGetGpeDevice - Get the GPE block device associated with a GPE.
1678 AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs.
1679 AcpiRead - Low-level read ACPI register (was HwLowLevelRead.)
1680 AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.)
1682 Most of the public ACPI hardware-related interfaces have been moved to a new
1683 file, components/hardware/hwxface.c
1685 Enhanced the FADT parsing and low-level ACPI register access: The ACPI
1686 register lengths within the FADT are now used, and the low level ACPI
1687 register access no longer hardcodes the ACPI register lengths. Given that
1688 there may be some risk in actually trusting the FADT register lengths, a
1690 time option was added to fall back to the default hardcoded lengths if the
1691 FADT proves to contain incorrect values - UseDefaultRegisterWidths. This
1692 option is set to true for now, and a warning is issued if a suspicious FADT
1693 register length is overridden with the default value.
1695 Fixed a reference count issue in NsRepairObject. This problem was introduced
1696 in version 20081031 as part of a fix to repair Buffer objects within
1699 Added semaphore support to the Linux/Unix application OS-services layer
1700 (OSL). ACPICA BZ 448. Lin Ming.
1702 Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes
1704 be implemented in the OSL, or will binary semaphores be used instead.
1706 Example Code and Data Size: These are the sizes for the OS-independent
1707 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1708 debug version of the code includes the debug output trace mechanism and has
1710 much larger code and data size.
1713 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
1714 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
1716 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
1717 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
1719 2) iASL Compiler/Disassembler and Tools:
1721 iASL: Completed the '-e' option to include additional ACPI tables in order
1723 aid with disassembly and External statement generation. ACPICA BZ 742. Lin
1726 iASL: Removed the "named object in while loop" error. The compiler cannot
1727 determine how many times a loop will execute. ACPICA BZ 730.
1729 Disassembler: Implemented support for FADT revision 2 (MS extension). ACPICA
1732 Disassembler: Updates for several ACPI data tables (HEST, EINJ, and MCFG).
1734 ----------------------------------------
1735 31 October 2008. Summary of changes for version 20081031:
1737 1) ACPI CA Core Subsystem:
1739 Restructured the ACPICA header files into public/private. acpi.h now
1741 only the "public" acpica headers. All other acpica headers are "private" and
1742 should not be included by acpica users. One new file, accommon.h is used to
1743 include the commonly used private headers for acpica code generation. Future
1744 plans include moving all private headers to a new subdirectory.
1746 Implemented an automatic Buffer->String return value conversion for
1747 predefined ACPI methods. For these methods (such as _BIF), added automatic
1748 conversion for return objects that are required to be a String, but a Buffer
1749 was found instead. This can happen when reading string battery data from an
1750 operation region, because it used to be difficult to convert the data from
1751 buffer to string from within the ASL. Ensures that the host OS is provided
1752 with a valid null-terminated string. Linux BZ 11822.
1754 Updated the FACS waking vector interfaces. Split AcpiSetFirmwareWakingVector
1755 into two: one for the 32-bit vector, another for the 64-bit vector. This is
1756 required because the host OS must setup the wake much differently for each
1757 vector (real vs. protected mode, etc.) and the interface itself should not
1759 deciding which vector to use. Also, eliminated the GetFirmwareWakingVector
1760 interface, as it served no purpose (only the firmware reads the vector, OS
1761 only writes the vector.) ACPICA BZ 731.
1763 Implemented a mechanism to escape infinite AML While() loops. Added a loop
1764 counter to force exit from AML While loops if the count becomes too large.
1765 This can occur in poorly written AML when the hardware does not respond
1766 within a while loop and the loop does not implement a timeout. The maximum
1767 loop count is configurable. A new exception code is returned when a loop is
1768 broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore.
1770 Optimized the execution of AML While loops. Previously, a control state
1771 object was allocated and freed for each execution of the loop. The
1772 optimization is to simply reuse the control state for each iteration. This
1773 speeds up the raw loop execution time by about 5%.
1775 Enhanced the implicit return mechanism. For Windows compatibility, return an
1776 implicit integer of value zero for methods that contain no executable code.
1777 Such methods are seen in the field as stubs (presumably), and can cause
1778 drivers to fail if they expect a return value. Lin Ming.
1780 Allow multiple backslashes as root prefixes in namepaths. In a fully
1781 qualified namepath, allow multiple backslash prefixes. This can happen (and
1782 is seen in the field) because of the use of a double-backslash in strings
1783 (since backslash is the escape character) causing confusion. ACPICA BZ 739
1786 Emit a warning if two different FACS or DSDT tables are discovered in the
1787 FADT. Checks if there are two valid but different addresses for the FACS and
1788 DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.)
1790 Consolidated the method argument count validation code. Merged the code that
1791 validates control method argument counts into the predefined validation
1792 module. Eliminates possible multiple warnings for incorrect argument counts.
1794 Implemented ACPICA example code. Includes code for ACPICA initialization,
1795 handler installation, and calling a control method. Available at
1796 source/tools/examples.
1798 Added a global pointer for FACS table to simplify internal FACS access. Use
1799 the global pointer instead of using AcpiGetTableByIndex for each FACS
1801 This simplifies the code for the Global Lock and the Firmware Waking
1804 Example Code and Data Size: These are the sizes for the OS-independent
1805 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1806 debug version of the code includes the debug output trace mechanism and has
1808 much larger code and data size.
1811 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
1812 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
1814 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
1815 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
1817 2) iASL Compiler/Disassembler and Tools:
1819 iASL: Improved disassembly of external method calls. Added the -e option to
1820 allow the inclusion of additional ACPI tables to help with the disassembly
1822 method invocations and the generation of external declarations during the
1823 disassembly. Certain external method invocations cannot be disassembled
1824 properly without the actual declaration of the method. Use the -e option to
1825 include the table where the external method(s) are actually declared. Most
1826 useful for disassembling SSDTs that make method calls back to the master
1827 DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl -d
1828 -e dsdt.aml ssdt1.aml
1830 iASL: Fix to allow references to aliases within ASL namepaths. Fixes a
1831 problem where the use of an alias within a namepath would result in a not
1832 found error or cause the compiler to fault. Also now allows forward
1833 references from the Alias operator itself. ACPICA BZ 738.
1835 ----------------------------------------
1836 26 September 2008. Summary of changes for version 20080926:
1838 1) ACPI CA Core Subsystem:
1840 Designed and implemented a mechanism to validate predefined ACPI methods and
1841 objects. This code validates the predefined ACPI objects (objects whose
1843 start with underscore) that appear in the namespace, at the time they are
1844 evaluated. The argument count and the type of the returned object are
1845 validated against the ACPI specification. The purpose of this validation is
1846 to detect problems with the BIOS-implemented predefined ACPI objects before
1847 the results are returned to the ACPI-related drivers. Future enhancements
1849 include actual repair of incorrect return objects where possible. Two new
1850 files are nspredef.c and acpredef.h.
1852 Fixed a fault in the AML parser if a memory allocation fails during the Op
1853 completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492.
1855 Fixed an issue with implicit return compatibility. This change improves the
1856 implicit return mechanism to be more compatible with the MS interpreter. Lin
1857 Ming, ACPICA BZ 349.
1859 Implemented support for zero-length buffer-to-string conversions. Allow zero
1860 length strings during interpreter buffer-to-string conversions. For example,
1861 during the ToDecimalString and ToHexString operators, as well as implicit
1862 conversions. Fiodor Suietov, ACPICA BZ 585.
1864 Fixed two possible memory leaks in the error exit paths of
1865 AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions are
1866 similar in that they use a stack of state objects in order to eliminate
1867 recursion. The stack must be fully unwound and deallocated if an error
1868 occurs. Lin Ming. ACPICA BZ 383.
1870 Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the
1872 ACPI register table. This bit does not exist and is unused. Lin Ming, Bob
1873 Moore ACPICA BZ 442.
1875 Removed the obsolete version number in module headers. Removed the
1876 "$Revision" number that appeared in each module header. This version number
1877 was useful under SourceSafe and CVS, but has no meaning under git. It is not
1878 only incorrect, it could also be misleading.
1880 Example Code and Data Size: These are the sizes for the OS-independent
1881 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1882 debug version of the code includes the debug output trace mechanism and has
1884 much larger code and data size.
1887 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
1888 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
1890 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
1891 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
1893 ----------------------------------------
1894 29 August 2008. Summary of changes for version 20080829:
1896 1) ACPI CA Core Subsystem:
1898 Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type
1899 Reference. Changes include the elimination of cheating on the Object field
1900 for the DdbHandle subtype, addition of a reference class field to
1901 differentiate the various reference types (instead of an AML opcode), and
1903 cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723
1905 Reduce an error to a warning for an incorrect method argument count.
1906 Previously aborted with an error if too few arguments were passed to a
1907 control method via the external ACPICA interface. Now issue a warning
1909 and continue. Handles the case where the method inadvertently declares too
1910 many arguments, but does not actually use the extra ones. Applies mainly to
1911 the predefined methods. Lin Ming. Linux BZ 11032.
1913 Disallow the evaluation of named object types with no intrinsic value.
1915 AE_TYPE for objects that have no value and therefore evaluation is
1917 Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation of
1918 these types were allowed, but an exception would be generated at some point
1919 during the evaluation. Now, the error is generated up front.
1921 Fixed a possible memory leak in the AcpiNsGetExternalPathname function
1922 (nsnames.c). Fixes a leak in the error exit path.
1924 Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These
1926 levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and
1928 interfaces. Also added ACPI_DB_EVENTS to correspond with the existing
1931 Removed obsolete and/or unused exception codes from the acexcep.h header.
1932 There is the possibility that certain device drivers may be affected if they
1933 use any of these exceptions.
1935 The ACPICA documentation has been added to the public git source tree, under
1936 acpica/documents. Included are the ACPICA programmer reference, the iASL
1937 compiler reference, and the changes.txt release logfile.
1939 Example Code and Data Size: These are the sizes for the OS-independent
1940 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1941 debug version of the code includes the debug output trace mechanism and has
1943 much larger code and data size.
1946 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
1947 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
1949 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
1950 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
1952 2) iASL Compiler/Disassembler and Tools:
1954 Allow multiple argument counts for the predefined _SCP method. ACPI 3.0
1955 defines _SCP with 3 arguments. Previous versions defined it with only 1
1956 argument. iASL now allows both definitions.
1958 iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for zero-
1959 length subtables when disassembling ACPI tables. Also fixed a couple of
1960 errors where a full 16-bit table type field was not extracted from the input
1963 acpisrc: Improve comment counting mechanism for generating source code
1964 statistics. Count first and last lines of multi-line comments as whitespace,
1965 not comment lines. Handle Linux legal header in addition to standard acpica
1968 ----------------------------------------
1970 29 July 2008. Summary of changes for version 20080729:
1972 1) ACPI CA Core Subsystem:
1974 Fix a possible deadlock in the GPE dispatch. Remove call to
1975 AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will
1977 to acquire the GPE lock but can deadlock since the GPE lock is already held
1978 at dispatch time. This code was introduced in version 20060831 as a response
1979 to Linux BZ 6881 and has since been removed from Linux.
1981 Add a function to dereference returned reference objects. Examines the
1983 object from a call to AcpiEvaluateObject. Any Index or RefOf references are
1984 automatically dereferenced in an attempt to return something useful (these
1985 reference types cannot be converted into an external ACPI_OBJECT.) Provides
1986 MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105
1988 x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new
1989 subtables for the MADT and one new subtable for the SRAT. Includes
1990 disassembler and AcpiSrc support. Data from the Intel 64 Architecture x2APIC
1991 Specification, June 2008.
1993 Additional error checking for pathname utilities. Add error check after all
1994 calls to AcpiNsGetPathnameLength. Add status return from
1995 AcpiNsBuildExternalPath and check after all calls. Add parameter validation
1996 to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar.
1998 Return status from the global init function AcpiUtGlobalInitialize. This is
1999 used by both the kernel subsystem and the utilities such as iASL compiler.
2000 The function could possibly fail when the caches are initialized. Yang Yi.
2002 Add a function to decode reference object types to strings. Created for
2003 improved error messages.
2005 Improve object conversion error messages. Better error messages during
2007 conversion from internal to the external ACPI_OBJECT. Used for external
2009 to AcpiEvaluateObject.
2011 Example Code and Data Size: These are the sizes for the OS-independent
2012 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2013 debug version of the code includes the debug output trace mechanism and has
2015 much larger code and data size.
2018 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
2019 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
2021 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
2022 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
2024 2) iASL Compiler/Disassembler and Tools:
2026 Debugger: fix a possible hang when evaluating non-methods. Fixes a problem
2027 introduced in version 20080701. If the object being evaluated (via execute
2028 command) is not a method, the debugger can hang while trying to obtain non-
2029 existent parameters.
2031 iASL: relax error for using reserved "_T_x" identifiers. These names can
2032 appear in a disassembled ASL file if they were emitted by the original
2033 compiler. Instead of issuing an error or warning and forcing the user to
2034 manually change these names, issue a remark instead.
2036 iASL: error if named object created in while loop. Emit an error if any
2038 object is created within a While loop. If allowed, this code will generate a
2039 run-time error on the second iteration of the loop when an attempt is made
2041 create the same named object twice. ACPICA bugzilla 730.
2043 iASL: Support absolute pathnames for include files. Add support for absolute
2044 pathnames within the Include operator. previously, only relative pathnames
2047 iASL: Enforce minimum 1 interrupt in interrupt macro and Resource
2049 The ACPI spec requires one interrupt minimum. BZ 423
2051 iASL: Handle a missing ResourceSource arg, with a present SourceIndex.
2052 Handles the case for the Interrupt Resource Descriptor where
2053 the ResourceSource argument is omitted but ResourceSourceIndex
2054 is present. Now leave room for the Index. BZ 426
2056 iASL: Prevent error message if CondRefOf target does not exist. Fixes cases
2057 where an error message is emitted if the target does not exist. BZ 516
2059 iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option
2060 (get ACPI tables on Windows). This was apparently broken in version
2063 AcpiXtract: Handle EOF while extracting data. Correctly handle the case
2065 the EOF happens immediately after the last table in the input file. Print
2066 completion message. Previously, no message was displayed in this case.
2068 ----------------------------------------
2069 01 July 2008. Summary of changes for version 20080701:
2071 0) Git source tree / acpica.org
2073 Fixed a problem where a git-clone from http would not transfer the entire
2076 1) ACPI CA Core Subsystem:
2078 Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one
2079 enable bit. Now performs a read-change-write of the enable register instead
2080 of simply writing out the cached enable mask. This will prevent inadvertent
2081 enabling of GPEs if a rogue GPE is received during initialization (before
2083 handlers are installed.)
2085 Implemented a copy for dynamically loaded tables. Previously, dynamically
2086 loaded tables were simply mapped - but on some machines this memory is
2087 corrupted after suspend. Now copy the table to a local buffer. For the
2088 OpRegion case, added checksum verify. Use the table length from the table
2089 header, not the region length. For the Buffer case, use the table length
2090 also. Dennis Noordsij, Bob Moore. BZ 10734
2092 Fixed a problem where the same ACPI table could not be dynamically loaded
2094 unloaded more than once. Without this change, a table cannot be loaded again
2095 once it has been loaded/unloaded one time. The current mechanism does not
2096 unregister a table upon an unload. During a load, if the same table is
2098 this no longer returns an exception. BZ 722
2100 Fixed a problem where the wrong descriptor length was calculated for the
2101 EndTag descriptor in 64-bit mode. The "minimal" descriptors such as EndTag
2102 are calculated as 12 bytes long, but the actual length in the internal
2103 descriptor is 16 because of the round-up to 8 on the 64-bit build. Reported
2104 by Linn Crosetto. BZ 728
2106 Fixed a possible memory leak in the Unload operator. The DdbHandle returned
2107 by Load() did not have its reference count decremented during unload,
2109 to a memory leak. Lin Ming. BZ 727
2111 Fixed a possible memory leak when deleting thermal/processor objects. Any
2112 associated notify handlers (and objects) were not being deleted. Fiodor
2115 Fixed the ordering of the ASCII names in the global mutex table to match the
2116 actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug
2118 Vegard Nossum. BZ 726
2120 Enhanced the AcpiGetObjectInfo interface to return the number of required
2121 arguments if the object is a control method. Added this call to the debugger
2122 so the proper number of default arguments are passed to a method. This
2123 prevents a warning when executing methods from AcpiExec.
2125 Added a check for an invalid handle in AcpiGetObjectInfo. Return
2126 AE_BAD_PARAMETER if input handle is invalid. BZ 474
2128 Fixed an extraneous warning from exconfig.c on the 64-bit build.
2130 Example Code and Data Size: These are the sizes for the OS-independent
2131 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2132 debug version of the code includes the debug output trace mechanism and has
2134 much larger code and data size.
2137 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
2138 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
2140 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
2141 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
2143 2) iASL Compiler/Disassembler and Tools:
2145 iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both
2146 resource descriptor names.
2148 iASL: Detect invalid ASCII characters in input (windows version). Removed
2150 "-CF" flag from the flex compile, enables correct detection of non-ASCII
2151 characters in the input. BZ 441
2153 iASL: Eliminate warning when result of LoadTable is not used. Eliminate the
2154 "result of operation not used" warning when the DDB handle returned from
2155 LoadTable is not used. The warning is not needed. BZ 590
2157 AcpiExec: Add support for dynamic table load/unload. Now calls _CFG method
2159 pass address of table to the AML. Added option to disable OpRegion
2161 to allow creation of an OpRegion with a real address that was passed to
2163 All of this allows testing of the Load and Unload operators from AcpiExec.
2165 Debugger: update tables command for unloaded tables. Handle unloaded tables
2166 and use the standard table header output routine.
2168 ----------------------------------------
2169 09 June 2008. Summary of changes for version 20080609:
2171 1) ACPI CA Core Subsystem:
2173 Implemented a workaround for reversed _PRT entries. A significant number of
2174 BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This
2175 change dynamically detects and repairs this problem. Provides compatibility
2176 with MS ACPI. BZ 6859
2178 Simplified the internal ACPI hardware interfaces to eliminate the locking
2179 flag parameter from Register Read/Write. Added a new external interface,
2180 AcpiGetRegisterUnlocked.
2182 Fixed a problem where the invocation of a GPE control method could hang.
2184 was a regression introduced in 20080514. The new method argument count
2185 validation mechanism can enter an infinite loop when a GPE method is
2186 dispatched. Problem fixed by removing the obsolete code that passed GPE
2188 information to the notify handler via the control method parameter pointer.
2190 Fixed a problem where the _SST execution status was incorrectly returned to
2191 the caller of AcpiEnterSleepStatePrep. This was a regression introduced in
2192 20080514. _SST is optional and a NOT_FOUND exception should never be
2195 Fixed a problem where a deleted object could be accessed from within the AML
2196 parser. This was a regression introduced in version 20080123 as a fix for
2198 Unload operator. Lin Ming. BZ 10669
2200 Cleaned up the debug operand dump mechanism. Eliminated unnecessary operands
2201 and eliminated the use of a negative index in a loop. Operands are now
2202 displayed in the correct order, not backwards. This also fixes a regression
2203 introduced in 20080514 on 64-bit systems where the elimination of
2204 ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 715
2206 Fixed a possible memory leak in EvPciConfigRegionSetup where the error exit
2207 path did not delete a locally allocated structure.
2209 Updated definitions for the DMAR and SRAT tables to synchronize with the
2210 current specifications. Includes disassembler support.
2212 Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect
2213 loop termination value was used. Loop terminated on iteration early, missing
2214 one mutex. Linn Crosetto
2216 Example Code and Data Size: These are the sizes for the OS-independent
2217 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2218 debug version of the code includes the debug output trace mechanism and has
2220 much larger code and data size.
2223 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
2224 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
2226 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
2227 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
2229 2) iASL Compiler/Disassembler and Tools:
2231 Disassembler: Implemented support for EisaId() within _CID objects. Now
2232 disassemble integer _CID objects back to EisaId invocations, including
2233 multiple integers within _CID packages. Includes single-step support for
2236 Disassembler: Added support for DMAR and SRAT table definition changes.
2238 ----------------------------------------
2239 14 May 2008. Summary of changes for version 20080514:
2241 1) ACPI CA Core Subsystem:
2243 Fixed a problem where GPEs were enabled too early during the ACPICA
2244 initialization. This could lead to "handler not installed" errors on some
2245 machines. Moved GPE enable until after _REG/_STA/_INI methods are run. This
2246 ensures that all operation regions and devices throughout the namespace have
2247 been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916.
2249 Implemented a change to the enter sleep code. Moved execution of the _GTS
2250 method to just before setting sleep enable bit. The execution was moved from
2251 AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed
2252 immediately before the SLP_EN bit is set, as per the ACPI specification.
2255 Implemented a fix to disable unknown GPEs (2nd version). Now always disable
2256 the GPE, even if ACPICA thinks that that it is already disabled. It is
2257 possible that the AML or some other code has enabled the GPE unbeknownst to
2260 Fixed a problem with the Field operator where zero-length fields would
2262 an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length
2264 field declarations in Field(), BankField(), and IndexField(). BZ 10606.
2266 Implemented a fix for the Load operator, now load the table at the namespace
2267 root. This reverts a change introduced in version 20071019. The table is now
2268 loaded at the namespace root even though this goes against the ACPI
2269 specification. This provides compatibility with other ACPI implementations.
2270 The ACPI specification will be updated to reflect this in ACPI 4.0. Lin
2273 Fixed a problem where ACPICA would not Load() tables with unusual
2275 Now ignore ACPI table signature for Load() operator. Only "SSDT" is
2276 acceptable to the ACPI spec, but tables are seen with OEMx and null sigs.
2277 Therefore, signature validation is worthless. Apparently MS ACPI accepts
2279 signatures, ACPICA must be compatible. BZ 10454.
2281 Fixed a possible negative array index in AcpiUtValidateException. Added NULL
2282 fields to the exception string arrays to eliminate a -1 subtraction on the
2285 Updated the debug tracking macros to reduce overall code and data size.
2286 Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings
2287 instead of pointers to static strings. Jan Beulich and Bob Moore.
2289 Implemented argument count checking in control method invocation via
2290 AcpiEvaluateObject. Now emit an error if too few arguments, warning if too
2291 many. This applies only to extern programmatic control method execution, not
2292 method-to-method calls within the AML. Lin Ming.
2294 Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is no
2295 longer needed, especially with the removal of 16-bit support. It was
2297 mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 bit
2299 32/64-bit platforms is required.
2301 Added the C const qualifier for appropriate string constants -- mostly
2302 MODULE_NAME and printf format strings. Jan Beulich.
2304 Example Code and Data Size: These are the sizes for the OS-independent
2305 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2306 debug version of the code includes the debug output trace mechanism and has
2308 much larger code and data size.
2311 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
2312 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
2314 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
2315 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
2317 2) iASL Compiler/Disassembler and Tools:
2319 Implemented ACPI table revision ID validation in the disassembler. Zero is
2320 always invalid. For DSDTs, the ID controls the interpreter integer width. 1
2321 means 32-bit and this is unusual. 2 or greater is 64-bit.
2323 ----------------------------------------
2324 21 March 2008. Summary of changes for version 20080321:
2326 1) ACPI CA Core Subsystem:
2328 Implemented an additional change to the GPE support in order to suppress
2329 spurious or stray GPEs. The AcpiEvDisableGpe function will now permanently
2330 disable incoming GPEs that are neither enabled nor disabled -- meaning that
2331 the GPE is unknown to the system. This should prevent future interrupt
2333 from that GPE. BZ 6217 (Zhang Rui)
2335 Fixed a problem where NULL package elements were not returned to the
2336 AcpiEvaluateObject interface correctly. The element was simply ignored
2337 instead of returning a NULL ACPI_OBJECT package element, potentially causing
2338 a buffer overflow and/or confusing the caller who expected a fixed number of
2339 elements. BZ 10132 (Lin Ming, Bob Moore)
2341 Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word,
2343 Qword), Field, BankField, and IndexField operators when invoked from inside
2344 an executing control method. In this case, these operators created namespace
2345 nodes that were incorrectly left marked as permanent nodes instead of
2346 temporary nodes. This could cause a problem if there is race condition
2347 between an exiting control method and a running namespace walk. (Reported by
2350 Fixed a problem where the CreateField and CreateXXXField operators would
2351 incorrectly allow duplicate names (the name of the field) with no exception
2354 Implemented several changes for Notify handling. Added support for new
2356 values (ACPI 2.0+) and improved the Notify debug output. Notify on
2357 PowerResource objects is no longer allowed, as per the ACPI specification.
2358 (Bob Moore, Zhang Rui)
2360 All Reference Objects returned via the AcpiEvaluateObject interface are now
2361 marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved
2363 NULL objects - either NULL package elements or unresolved named references.
2365 Fixed a problem where an extraneous debug message was produced for package
2366 objects (when debugging enabled). The message "Package List length larger
2367 than NumElements count" is now produced in the correct case, and is now an
2368 error message rather than a debug message. Added a debug message for the
2369 opposite case, where NumElements is larger than the Package List (the
2371 will be padded out with NULL elements as per the ACPI spec.)
2373 Implemented several improvements for the output of the ASL "Debug" object to
2374 clarify and keep all data for a given object on one output line.
2376 Fixed two size calculation issues with the variable-length Start Dependent
2377 resource descriptor.
2379 Example Code and Data Size: These are the sizes for the OS-independent
2380 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2381 debug version of the code includes the debug output trace mechanism and has
2382 a much larger code and data size.
2385 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
2386 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
2388 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
2389 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
2391 2) iASL Compiler/Disassembler and Tools:
2393 Fixed a problem with the use of the Switch operator where execution of the
2394 containing method by multiple concurrent threads could cause an
2395 AE_ALREADY_EXISTS exception. This is caused by the fact that there is no
2396 actual Switch opcode, it must be simulated with local named temporary
2397 variables and if/else pairs. The solution chosen was to mark any method that
2398 uses Switch as Serialized, thus preventing multiple thread entries. BZ 469.
2400 ----------------------------------------
2401 13 February 2008. Summary of changes for version 20080213:
2403 1) ACPI CA Core Subsystem:
2405 Implemented another MS compatibility design change for GPE/Notify handling.
2406 GPEs are now cleared/enabled asynchronously to allow all pending notifies to
2407 complete first. It is expected that the OSL will queue the enable request
2408 behind all pending notify requests (may require changes to the local host
2410 in AcpiOsExecute). Alexey Starikovskiy.
2412 Fixed a problem where buffer and package objects passed as arguments to a
2413 control method via the external AcpiEvaluateObject interface could cause an
2414 AE_AML_INTERNAL exception depending on the order and type of operators
2415 executed by the target control method.
2417 Fixed a problem where resource descriptor size optimization could cause a
2418 problem when a _CRS resource template is passed to a _SRS method. The _SRS
2419 resource template must use the same descriptors (with the same size) as
2420 returned from _CRS. This change affects the following resource descriptors:
2421 IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 9487)
2423 Fixed a problem where a CopyObject to RegionField, BankField, and IndexField
2424 objects did not perform an implicit conversion as it should. These types
2426 retain their initial type permanently as per the ACPI specification.
2428 a CopyObject to all other object types should not perform an implicit
2429 conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388
2431 Fixed a problem with the AcpiGetDevices interface where the mechanism to
2432 match device CIDs did not examine the entire list of available CIDs, but
2433 instead aborted on the first non-matching CID. Andrew Patterson.
2435 Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro
2437 inadvertently changed to return a 16-bit value instead of a 32-bit value,
2438 truncating the upper dword of a 64-bit value. This macro is only used to
2439 display debug output, so no incorrect calculations were made. Also,
2440 reimplemented the macro so that a 64-bit shift is not performed by
2441 inefficient compilers.
2443 Added missing va_end statements that should correspond with each va_start
2446 Example Code and Data Size: These are the sizes for the OS-independent
2447 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2448 debug version of the code includes the debug output trace mechanism and has
2449 a much larger code and data size.
2452 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
2453 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
2455 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
2456 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
2458 2) iASL Compiler/Disassembler and Tools:
2460 Implemented full disassembler support for the following new ACPI tables:
2461 BERT, EINJ, and ERST. Implemented partial disassembler support for the
2462 complicated HEST table. These tables support the Windows Hardware Error
2463 Architecture (WHEA).
2465 ----------------------------------------
2466 23 January 2008. Summary of changes for version 20080123:
2468 1) ACPI CA Core Subsystem:
2470 Added the 2008 copyright to all module headers and signons. This affects
2471 virtually every file in the ACPICA core subsystem, the iASL compiler, and
2472 the tools/utilities.
2474 Fixed a problem with the SizeOf operator when used with Package and Buffer
2475 objects. These objects have deferred execution for some arguments, and the
2476 execution is now completed before the SizeOf is executed. This problem
2478 unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) BZ
2481 Implemented an enhancement to the interpreter "slack mode". In the absence
2483 an explicit return or an implicitly returned object from the last executed
2484 opcode, a control method will now implicitly return an integer of value 0
2486 Microsoft compatibility. (Lin Ming) BZ 392
2488 Fixed a problem with the Load operator where an exception was not returned
2490 the case where the table is already loaded. (Lin Ming) BZ 463
2492 Implemented support for the use of DDBHandles as an Indexed Reference, as
2494 the ACPI spec. (Lin Ming) BZ 486
2496 Implemented support for UserTerm (Method invocation) for the Unload operator
2497 as per the ACPI spec. (Lin Ming) BZ 580
2499 Fixed a problem with the LoadTable operator where the OemId and OemTableId
2500 input strings could cause unexpected failures if they were shorter than the
2501 maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576
2503 Implemented support for UserTerm (Method invocation) for the Unload operator
2504 as per the ACPI spec. (Lin Ming) BZ 580
2506 Implemented header file support for new ACPI tables - BERT, ERST, EINJ,
2508 IBFT, UEFI, WDAT. Disassembler support is forthcoming.
2510 Example Code and Data Size: These are the sizes for the OS-independent
2511 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2512 debug version of the code includes the debug output trace mechanism and has
2513 a much larger code and data size.
2516 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
2517 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
2519 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
2520 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
2522 2) iASL Compiler/Disassembler and Tools:
2524 Implemented support in the disassembler for checksum validation on incoming
2525 binary DSDTs and SSDTs. If incorrect, a message is displayed within the
2527 header dump at the start of the disassembly.
2529 Implemented additional debugging information in the namespace listing file
2530 created during compilation. In addition to the namespace hierarchy, the full
2531 pathname to each namespace object is displayed.
2533 Fixed a problem with the disassembler where invalid ACPI tables could cause
2534 faults or infinite loops.
2536 Fixed an unexpected parse error when using the optional "parameter types"
2537 list in a control method declaration. (Lin Ming) BZ 397
2539 Fixed a problem where two External declarations with the same name did not
2540 cause an error (Lin Ming) BZ 509
2542 Implemented support for full TermArgs (adding Argx, Localx and method
2543 invocation) for the ParameterData parameter to the LoadTable operator. (Lin
2546 ----------------------------------------
2547 19 December 2007. Summary of changes for version 20071219:
2549 1) ACPI CA Core Subsystem:
2551 Implemented full support for deferred execution for the TermArg string
2552 arguments for DataTableRegion. This enables forward references and full
2553 operand resolution for the three string arguments. Similar to
2555 deferred argument execution.) Lin Ming. BZ 430
2557 Implemented full argument resolution support for the BankValue argument to
2558 BankField. Previously, only constants were supported, now any TermArg may be
2559 used. Lin Ming BZ 387, 393
2561 Fixed a problem with AcpiGetDevices where the search of a branch of the
2562 device tree could be terminated prematurely. In accordance with the ACPI
2563 specification, the search down the current branch is terminated if a device
2564 is both not present and not functional (instead of just not present.) Yakui
2567 Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly if
2568 the underlying AML code changed the GPE enable registers. Now, any unknown
2569 incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately
2571 instead of simply ignored. Rui Zhang.
2573 Fixed a problem with Index Fields where the Index register was incorrectly
2574 limited to a maximum of 32 bits. Now any size may be used.
2576 Fixed a couple memory leaks associated with "implicit return" objects when
2577 the AML Interpreter slack mode is enabled. Lin Ming BZ 349
2579 Example Code and Data Size: These are the sizes for the OS-independent
2580 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2581 debug version of the code includes the debug output trace mechanism and has
2582 a much larger code and data size.
2585 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
2586 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
2588 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
2589 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
2591 ----------------------------------------
2592 14 November 2007. Summary of changes for version 20071114:
2594 1) ACPI CA Core Subsystem:
2596 Implemented event counters for each of the Fixed Events, the ACPI SCI
2597 (interrupt) itself, and control methods executed. Named
2598 AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. These
2599 should be useful for debugging and statistics.
2601 Implemented a new external interface, AcpiGetStatistics, to retrieve the
2602 contents of the various event counters. Returns the current values for
2603 AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and
2604 AcpiMethodCount. The interface can be expanded in the future if new counters
2605 are added. Device drivers should use this interface rather than access the
2608 Fixed a problem with the FromBCD and ToBCD operators. With some compilers,
2609 the ShortDivide function worked incorrectly, causing problems with the BCD
2610 functions with large input values. A truncation from 64-bit to 32-bit
2611 inadvertently occurred. Internal BZ 435. Lin Ming
2613 Fixed a problem with Index references passed as method arguments. References
2614 passed as arguments to control methods were dereferenced immediately (before
2615 control was passed to the called method). The references are now correctly
2616 passed directly to the called method. BZ 5389. Lin Ming
2618 Fixed a problem with CopyObject used in conjunction with the Index operator.
2619 The reference was incorrectly dereferenced before the copy. The reference is
2620 now correctly copied. BZ 5391. Lin Ming
2622 Fixed a problem with Control Method references within Package objects. These
2623 references are now correctly generated. This completes the package
2624 construction overhaul that began in version 20071019.
2626 Example Code and Data Size: These are the sizes for the OS-independent
2627 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2628 debug version of the code includes the debug output trace mechanism and has
2629 a much larger code and data size.
2632 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
2633 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
2635 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
2636 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
2639 2) iASL Compiler/Disassembler and Tools:
2641 The AcpiExec utility now installs handlers for all of the predefined
2642 Operation Region types. New types supported are: PCI_Config, CMOS, and
2645 Fixed a problem with the 64-bit version of AcpiExec where the extended (64-
2646 bit) address fields for the DSDT and FACS within the FADT were not being
2647 used, causing truncation of the upper 32-bits of these addresses. Lin Ming
2650 ----------------------------------------
2651 19 October 2007. Summary of changes for version 20071019:
2653 1) ACPI CA Core Subsystem:
2655 Fixed a problem with the Alias operator when the target of the alias is a
2656 named ASL operator that opens a new scope -- Scope, Device, PowerResource,
2657 Processor, and ThermalZone. In these cases, any children of the original
2658 operator could not be accessed via the alias, potentially causing unexpected
2659 AE_NOT_FOUND exceptions. (BZ 9067)
2661 Fixed a problem with the Package operator where all named references were
2662 created as object references and left otherwise unresolved. According to the
2663 ACPI specification, a Package can only contain Data Objects or references to
2664 control methods. The implication is that named references to Data Objects
2665 (Integer, Buffer, String, Package, BufferField, Field) should be resolved
2666 immediately upon package creation. This is the approach taken with this
2667 change. References to all other named objects (Methods, Devices, Scopes,
2668 etc.) are all now properly created as reference objects. (BZ 5328)
2670 Reverted a change to Notify handling that was introduced in version
2671 20070508. This version changed the Notify handling from asynchronous to
2672 fully synchronous (Device driver Notify handling with respect to the Notify
2673 ASL operator). It was found that this change caused more problems than it
2674 solved and was removed by most users.
2676 Fixed a problem with the Increment and Decrement operators where the type of
2677 the target object could be unexpectedly and incorrectly changed. (BZ 353)
2680 Fixed a problem with the Load and LoadTable operators where the table
2681 location within the namespace was ignored. Instead, the table was always
2682 loaded into the root or current scope. Lin Ming.
2684 Fixed a problem with the Load operator when loading a table from a buffer
2685 object. The input buffer was prematurely zeroed and/or deleted. (BZ 577)
2687 Fixed a problem with the Debug object where a store of a DdbHandle reference
2688 object to the Debug object could cause a fault.
2690 Added a table checksum verification for the Load operator, in the case where
2691 the load is from a buffer. (BZ 578).
2693 Implemented additional parameter validation for the LoadTable operator. The
2694 length of the input strings SignatureString, OemIdString, and OemTableId are
2695 now checked for maximum lengths. (BZ 582) Lin Ming.
2697 Example Code and Data Size: These are the sizes for the OS-independent
2698 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2699 debug version of the code includes the debug output trace mechanism and has
2700 a much larger code and data size.
2703 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
2704 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
2706 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
2707 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
2710 2) iASL Compiler/Disassembler:
2712 Fixed a problem where if a single file was specified and the file did not
2713 exist, no error message was emitted. (Introduced with wildcard support in
2716 ----------------------------------------
2717 19 September 2007. Summary of changes for version 20070919:
2719 1) ACPI CA Core Subsystem:
2721 Designed and implemented new external interfaces to install and remove
2722 handlers for ACPI table-related events. Current events that are defined are
2723 LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as
2724 they are dynamically loaded and unloaded. See AcpiInstallTableHandler and
2725 AcpiRemoveTableHandler. (Lin Ming and Bob Moore)
2727 Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag
2728 (acpi_serialized option on Linux) could cause some systems to hang during
2729 initialization. (Bob Moore) BZ 8171
2731 Fixed a problem where objects of certain types (Device, ThermalZone,
2732 Processor, PowerResource) can be not found if they are declared and
2733 referenced from within the same control method (Lin Ming) BZ 341
2735 Example Code and Data Size: These are the sizes for the OS-independent
2736 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2737 debug version of the code includes the debug output trace mechanism and has
2738 a much larger code and data size.
2741 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
2742 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
2744 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
2745 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
2748 2) iASL Compiler/Disassembler:
2750 Implemented support to allow multiple files to be compiled/disassembled in a
2751 single invocation. This includes command line wildcard support for both the
2752 Windows and Unix versions of the compiler. This feature simplifies the
2753 disassembly and compilation of multiple ACPI tables in a single directory.
2755 ----------------------------------------
2756 08 May 2007. Summary of changes for version 20070508:
2758 1) ACPI CA Core Subsystem:
2760 Implemented a Microsoft compatibility design change for the handling of the
2761 Notify AML operator. Previously, notify handlers were dispatched and
2762 executed completely asynchronously in a deferred thread. The new design
2763 still executes the notify handlers in a different thread, but the original
2764 thread that executed the Notify() now waits at a synchronization point for
2765 the notify handler to complete. Some machines depend on a synchronous Notify
2766 operator in order to operate correctly.
2768 Implemented support to allow Package objects to be passed as method
2769 arguments to the external AcpiEvaluateObject interface. Previously, this
2770 would return the AE_NOT_IMPLEMENTED exception. This feature had not been
2771 implemented since there were no reserved control methods that required it
2774 Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs that
2775 contained invalid non-zero values in reserved fields could cause later
2776 failures because these fields have meaning in later revisions of the FADT.
2777 For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The fields
2778 are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.)
2780 Fixed a problem where the Global Lock handle was not properly updated if a
2781 thread that acquired the Global Lock via executing AML code then attempted
2782 to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by Joe
2785 Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list
2786 could be corrupted if the interrupt being removed was at the head of the
2787 list. Reported by Linn Crosetto.
2789 Example Code and Data Size: These are the sizes for the OS-independent
2790 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2791 debug version of the code includes the debug output trace mechanism and has
2792 a much larger code and data size.
2795 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
2796 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
2798 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
2799 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
2801 ----------------------------------------
2802 20 March 2007. Summary of changes for version 20070320:
2804 1) ACPI CA Core Subsystem:
2806 Implemented a change to the order of interpretation and evaluation of AML
2807 operand objects within the AML interpreter. The interpreter now evaluates
2808 operands in the order that they appear in the AML stream (and the
2809 corresponding ASL code), instead of in the reverse order (after the entire
2810 operand list has been parsed). The previous behavior caused several subtle
2811 incompatibilities with the Microsoft AML interpreter as well as being
2812 somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov.
2814 Implemented a change to the ACPI Global Lock support. All interfaces to the
2815 global lock now allow the same thread to acquire the lock multiple times.
2816 This affects the AcpiAcquireGlobalLock external interface to the global lock
2817 as well as the internal use of the global lock to support AML fields -- a
2818 control method that is holding the global lock can now simultaneously access
2819 AML fields that require global lock protection. Previously, in both cases,
2820 this would have resulted in an AE_ALREADY_ACQUIRED exception. The change to
2821 AcpiAcquireGlobalLock is of special interest to drivers for the Embedded
2822 Controller. There is no change to the behavior of the AML Acquire operator,
2823 as this can already be used to acquire a mutex multiple times by the same
2824 thread. BZ 8066. With assistance from Alexey Starikovskiy.
2826 Fixed a problem where invalid objects could be referenced in the AML
2827 Interpreter after error conditions. During operand evaluation, ensure that
2828 the internal "Return Object" field is cleared on error and only valid
2829 pointers are stored there. Caused occasional access to deleted objects that
2830 resulted in "large reference count" warning messages. Valery Podrezov.
2832 Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur on
2833 deeply nested control method invocations. BZ 7873, local BZ 487. Valery
2836 Fixed an internal problem with the handling of result objects on the
2837 interpreter result stack. BZ 7872. Valery Podrezov.
2839 Removed obsolete code that handled the case where AML_NAME_OP is the target
2840 of a reference (Reference.Opcode). This code was no longer necessary. BZ
2841 7874. Valery Podrezov.
2843 Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This was a
2844 remnant from the previously discontinued 16-bit support.
2846 Example Code and Data Size: These are the sizes for the OS-independent
2847 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2848 debug version of the code includes the debug output trace mechanism and has
2849 a much larger code and data size.
2852 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
2853 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
2855 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
2856 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
2858 ----------------------------------------
2859 26 January 2007. Summary of changes for version 20070126:
2861 1) ACPI CA Core Subsystem:
2863 Added the 2007 copyright to all module headers and signons. This affects
2864 virtually every file in the ACPICA core subsystem, the iASL compiler, and
2867 Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable
2868 during a table load. A bad pointer was passed in the case where the DSDT is
2869 overridden, causing a fault in this case.
2871 Example Code and Data Size: These are the sizes for the OS-independent
2872 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2873 debug version of the code includes the debug output trace mechanism and has
2874 a much larger code and data size.
2877 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
2878 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
2880 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
2881 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
2883 ----------------------------------------
2884 15 December 2006. Summary of changes for version 20061215:
2886 1) ACPI CA Core Subsystem:
2888 Support for 16-bit ACPICA has been completely removed since it is no longer
2889 necessary and it clutters the code. All 16-bit macros, types, and
2890 conditional compiles have been removed, cleaning up and simplifying the code
2891 across the entire subsystem. DOS support is no longer needed since the
2892 bootable Linux firmware kit is now available.
2894 The handler for the Global Lock is now removed during AcpiTerminate to
2895 enable a clean subsystem restart, via the implementation of the
2896 AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz,
2899 Implemented enhancements to the multithreading support within the debugger
2900 to enable improved multithreading debugging and evaluation of the subsystem.
2903 Debugger: Enhanced the Statistics/Memory command to emit the total (maximum)
2904 memory used during the execution, as well as the maximum memory consumed by
2905 each of the various object types. (Valery Podrezov)
2907 Example Code and Data Size: These are the sizes for the OS-independent
2908 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2909 debug version of the code includes the debug output trace mechanism and has
2910 a much larger code and data size.
2913 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
2914 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
2916 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
2917 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
2920 2) iASL Compiler/Disassembler and Tools:
2922 AcpiExec: Implemented a new option (-m) to display full memory use
2923 statistics upon subsystem/program termination. (Valery Podrezov)
2925 ----------------------------------------
2926 09 November 2006. Summary of changes for version 20061109:
2928 1) ACPI CA Core Subsystem:
2930 Optimized the Load ASL operator in the case where the source operand is an
2931 operation region. Simply map the operation region memory, instead of
2932 performing a bytewise read. (Region must be of type SystemMemory, see
2935 Fixed the Load ASL operator for the case where the source operand is a
2936 region field. A buffer object is also allowed as the source operand. BZ 480
2938 Fixed a problem where the Load ASL operator allowed the source operand to be
2939 an operation region of any type. It is now restricted to regions of type
2940 SystemMemory, as per the ACPI specification. BZ 481
2942 Additional cleanup and optimizations for the new Table Manager code.
2944 AcpiEnable will now fail if all of the required ACPI tables are not loaded
2945 (FADT, FACS, DSDT). BZ 477
2947 Added #pragma pack(8/4) to acobject.h to ensure that the structures in this
2948 header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been
2949 manually optimized to be aligned and will not work if it is byte-packed.
2951 Example Code and Data Size: These are the sizes for the OS-independent
2952 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2953 debug version of the code includes the debug output trace mechanism and has
2954 a much larger code and data size.
2957 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
2958 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
2960 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
2961 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
2964 2) iASL Compiler/Disassembler and Tools:
2966 Fixed a problem where the presence of the _OSI predefined control method
2967 within complex expressions could cause an internal compiler error.
2969 AcpiExec: Implemented full region support for multiple address spaces.
2970 SpaceId is now part of the REGION object. BZ 429
2972 ----------------------------------------
2973 11 October 2006. Summary of changes for version 20061011:
2975 1) ACPI CA Core Subsystem:
2977 Completed an AML interpreter performance enhancement for control method
2978 execution. Previously a 2-pass parse/execution, control methods are now
2979 completely parsed and executed in a single pass. This improves overall
2980 interpreter performance by ~25%, reduces code size, and reduces CPU stack
2981 use. (Valery Podrezov + interpreter changes in version 20051202 that
2982 eliminated namespace loading during the pass one parse.)
2984 Implemented _CID support for PCI Root Bridge detection. If the _HID does not
2985 match the predefined PCI Root Bridge IDs, the _CID list (if present) is now
2986 obtained and also checked for an ID match.
2988 Implemented additional support for the PCI _ADR execution: upsearch until a
2989 device scope is found before executing _ADR. This allows PCI_Config
2990 operation regions to be declared locally within control methods underneath
2993 Fixed a problem with a possible race condition between threads executing
2994 AcpiWalkNamespace and the AML interpreter. This condition was removed by
2995 modifying AcpiWalkNamespace to (by default) ignore all temporary namespace
2996 entries created during any concurrent control method execution. An
2997 additional namespace race condition is known to exist between
2998 AcpiWalkNamespace and the Load/Unload ASL operators and is still under
3001 Restructured the AML ParseLoop function, breaking it into several
3002 subfunctions in order to reduce CPU stack use and improve maintainability.
3005 AcpiGetHandle: Fix for parameter validation to detect invalid combinations
3006 of prefix handle and pathname. BZ 478
3008 Example Code and Data Size: These are the sizes for the OS-independent
3009 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3010 debug version of the code includes the debug output trace mechanism and has
3011 a much larger code and data size.
3014 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
3015 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
3017 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
3018 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
3020 2) iASL Compiler/Disassembler and Tools:
3022 Ported the -g option (get local ACPI tables) to the new ACPICA Table Manager
3023 to restore original behavior.
3025 ----------------------------------------
3026 27 September 2006. Summary of changes for version 20060927:
3028 1) ACPI CA Core Subsystem:
3030 Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister.
3031 These functions now use a spinlock for mutual exclusion and the interrupt
3032 level indication flag is not needed.
3034 Fixed a problem with the Global Lock where the lock could appear to be
3035 obtained before it is actually obtained. The global lock semaphore was
3036 inadvertently created with one unit instead of zero units. (BZ 464) Fiodor
3039 Fixed a possible memory leak and fault in AcpiExResolveObjectToValue during
3040 a read from a buffer or region field. (BZ 458) Fiodor Suietov.
3042 Example Code and Data Size: These are the sizes for the OS-independent
3043 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3044 debug version of the code includes the debug output trace mechanism and has
3045 a much larger code and data size.
3048 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
3049 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
3051 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
3052 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
3055 2) iASL Compiler/Disassembler and Tools:
3057 Fixed a compilation problem with the pre-defined Resource Descriptor field
3058 names where an "object does not exist" error could be incorrectly generated
3059 if the parent ResourceTemplate pathname places the template within a
3060 different namespace scope than the current scope. (BZ 7212)
3062 Fixed a problem where the compiler could hang after syntax errors detected
3063 in an ElseIf construct. (BZ 453)
3065 Fixed a problem with the AmlFilename parameter to the DefinitionBlock()
3066 operator. An incorrect output filename was produced when this parameter was
3067 a null string (""). Now, the original input filename is used as the AML
3068 output filename, with an ".aml" extension.
3070 Implemented a generic batch command mode for the AcpiExec utility (execute
3071 any AML debugger command) (Valery Podrezov).
3073 ----------------------------------------
3074 12 September 2006. Summary of changes for version 20060912:
3076 1) ACPI CA Core Subsystem:
3078 Enhanced the implementation of the "serialized mode" of the interpreter
3079 (enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is
3080 specified, instead of creating a serialization semaphore per control method,
3081 the interpreter lock is simply no longer released before a blocking
3082 operation during control method execution. This effectively makes the AML
3083 Interpreter single-threaded. The overhead of a semaphore per-method is
3086 Fixed a regression where an error was no longer emitted if a control method
3087 attempts to create 2 objects of the same name. This once again returns
3088 AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism that
3089 will dynamically serialize the control method to possible prevent future
3092 Integrated a fix for a problem with PCI Express HID detection in the PCI
3093 Config Space setup procedure. (BZ 7145)
3095 Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the
3096 AcpiHwInitialize function - the FADT registers are now validated when the
3099 Added two new warnings during FADT verification - 1) if the FADT is larger
3100 than the largest known FADT version, and 2) if there is a mismatch between a
3101 32-bit block address and the 64-bit X counterpart (when both are non-zero.)
3103 Example Code and Data Size: These are the sizes for the OS-independent
3104 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3105 debug version of the code includes the debug output trace mechanism and has
3106 a much larger code and data size.
3109 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
3110 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
3112 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
3113 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
3116 2) iASL Compiler/Disassembler and Tools:
3118 Fixed a problem with the implementation of the Switch() operator where the
3119 temporary variable was declared too close to the actual Switch, instead of
3120 at method level. This could cause a problem if the Switch() operator is
3121 within a while loop, causing an error on the second iteration. (BZ 460)
3123 Disassembler - fix for error emitted for unknown type for target of scope
3124 operator. Now, ignore it and continue.
3126 Disassembly of an FADT now verifies the input FADT and reports any errors
3127 found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs.
3129 Disassembly of raw data buffers with byte initialization data now prefixes
3130 each output line with the current buffer offset.
3132 Disassembly of ASF! table now includes all variable-length data fields at
3133 the end of some of the subtables.
3135 The disassembler now emits a comment if a buffer appears to be a
3136 ResourceTemplate, but cannot be disassembled as such because the EndTag does
3137 not appear at the very end of the buffer.
3139 AcpiExec - Added the "-t" command line option to enable the serialized mode
3140 of the AML interpreter.
3142 ----------------------------------------
3143 31 August 2006. Summary of changes for version 20060831:
3145 1) ACPI CA Core Subsystem:
3147 Miscellaneous fixes for the Table Manager:
3148 - Correctly initialize internal common FADT for all 64-bit "X" fields
3149 - Fixed a couple table mapping issues during table load
3150 - Fixed a couple alignment issues for IA64
3151 - Initialize input array to zero in AcpiInitializeTables
3152 - Additional parameter validation for AcpiGetTable, AcpiGetTableHeader,
3155 Change for GPE support: when a "wake" GPE is received, all wake GPEs are now
3156 immediately disabled to prevent the waking GPE from firing again and to
3157 prevent other wake GPEs from interrupting the wake process.
3159 Added the AcpiGpeCount global that tracks the number of processed GPEs, to
3160 be used for debugging systems with a large number of ACPI interrupts.
3162 Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in
3163 both the ACPICA headers and the disassembler.
3165 Example Code and Data Size: These are the sizes for the OS-independent
3166 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3167 debug version of the code includes the debug output trace mechanism and has
3168 a much larger code and data size.
3171 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
3172 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
3174 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
3175 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
3178 2) iASL Compiler/Disassembler and Tools:
3180 Disassembler support for the DMAR ACPI table.
3182 ----------------------------------------
3183 23 August 2006. Summary of changes for version 20060823:
3185 1) ACPI CA Core Subsystem:
3187 The Table Manager component has been completely redesigned and
3188 reimplemented. The new design is much simpler, and reduces the overall code
3189 and data size of the kernel-resident ACPICA by approximately 5%. Also, it is
3190 now possible to obtain the ACPI tables very early during kernel
3191 initialization, even before dynamic memory management is initialized.
3192 (Alexey Starikovskiy, Fiodor Suietov, Bob Moore)
3194 Obsolete ACPICA interfaces:
3196 - AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel init
3198 - AcpiLoadTable: Not needed.
3199 - AcpiUnloadTable: Not needed.
3201 New ACPICA interfaces:
3203 - AcpiInitializeTables: Must be called before the table manager can be used.
3204 - AcpiReallocateRootTable: Used to transfer the root table to dynamically
3205 allocated memory after it becomes available.
3206 - AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI tables
3209 Other ACPICA changes:
3211 - AcpiGetTableHeader returns the actual mapped table header, not a copy. Use
3212 AcpiOsUnmapMemory to free this mapping.
3213 - AcpiGetTable returns the actual mapped table. The mapping is managed
3214 internally and must not be deleted by the caller. Use of this interface
3215 causes no additional dynamic memory allocation.
3216 - AcpiFindRootPointer: Support for physical addressing has been eliminated,
3217 it appeared to be unused.
3218 - The interface to AcpiOsMapMemory has changed to be consistent with the
3219 other allocation interfaces.
3220 - The interface to AcpiOsGetRootPointer has changed to eliminate unnecessary
3222 - ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 64-
3223 bit platforms. Was previously 64 bits on all platforms.
3224 - The interface to the ACPI Global Lock acquire/release macros have changed
3225 slightly since ACPICA no longer keeps a local copy of the FACS with a
3226 constructed pointer to the actual global lock.
3228 Porting to the new table manager:
3230 - AcpiInitializeTables: Must be called once, and can be called anytime
3231 during the OS initialization process. It allows the host to specify an area
3232 of memory to be used to store the internal version of the RSDT/XSDT (root
3233 table). This allows the host to access ACPI tables before memory management
3234 is initialized and running.
3235 - AcpiReallocateRootTable: Can be called after memory management is running
3236 to copy the root table to a dynamically allocated array, freeing up the
3237 scratch memory specified in the call to AcpiInitializeTables.
3238 - AcpiSubsystemInitialize: This existing interface is independent of the
3239 Table Manager, and does not have to be called before the Table Manager can
3240 be used, it only must be called before the rest of ACPICA can be used.
3241 - ACPI Tables: Some changes have been made to the names and structure of the
3242 actbl.h and actbl1.h header files and may require changes to existing code.
3243 For example, bitfields have been completely removed because of their lack of
3244 portability across C compilers.
3245 - Update interfaces to the Global Lock acquire/release macros if local
3246 versions are used. (see acwin.h)
3248 Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c
3252 Example Code and Data Size: These are the sizes for the OS-independent
3253 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3254 debug version of the code includes the debug output trace mechanism and has
3255 a much larger code and data size.
3258 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
3259 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
3261 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
3262 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
3265 2) iASL Compiler/Disassembler and Tools:
3267 No changes for this release.
3269 ----------------------------------------
3270 21 July 2006. Summary of changes for version 20060721:
3272 1) ACPI CA Core Subsystem:
3274 The full source code for the ASL test suite used to validate the iASL
3275 compiler and the ACPICA core subsystem is being released with the ACPICA
3276 source for the first time. The source is contained in a separate package and
3277 consists of over 1100 files that exercise all ASL/AML operators. The package
3278 should appear on the Intel/ACPI web site shortly. (Valery Podrezov, Fiodor
3281 Completed a new design and implementation for support of the ACPI Global
3282 Lock. On the OS side, the global lock is now treated as a standard AML
3283 mutex. Previously, multiple OS threads could "acquire" the global lock
3284 simultaneously. However, this could cause the BIOS to be starved out of the
3285 lock - especially in cases such as the Embedded Controller driver where
3286 there is a tight coupling between the OS and the BIOS.
3288 Implemented an optimization for the ACPI Global Lock interrupt mechanism.
3289 The Global Lock interrupt handler no longer queues the execution of a
3290 separate thread to signal the global lock semaphore. Instead, the semaphore
3291 is signaled directly from the interrupt handler.
3293 Implemented support within the AML interpreter for package objects that
3294 contain a larger AML length (package list length) than the package element
3295 count. In this case, the length of the package is truncated to match the
3296 package element count. Some BIOS code apparently modifies the package length
3297 on the fly, and this change supports this behavior. Provides compatibility
3298 with the MS AML interpreter. (With assistance from Fiodor Suietov)
3300 Implemented a temporary fix for the BankValue parameter of a Bank Field to
3301 support all constant values, now including the Zero and One opcodes.
3302 Evaluation of this parameter must eventually be converted to a full TermArg
3303 evaluation. A not-implemented error is now returned (temporarily) for non-
3304 constant values for this parameter.
3306 Fixed problem reports (Fiodor Suietov) integrated:
3307 - Fix for premature object deletion after CopyObject on Operation Region (BZ
3310 Example Code and Data Size: These are the sizes for the OS-independent
3311 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3312 debug version of the code includes the debug output trace mechanism and has
3313 a much larger code and data size.
3316 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total
3317 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total
3319 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
3320 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
3323 2) iASL Compiler/Disassembler and Tools:
3325 No changes for this release.
3327 ----------------------------------------
3328 07 July 2006. Summary of changes for version 20060707:
3330 1) ACPI CA Core Subsystem:
3332 Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers
3333 that do not allow the initialization of address pointers within packed
3334 structures - even though the hardware itself may support misaligned
3335 transfers. Some of the debug data structures are packed by default to
3338 Added an error message for the case where AcpiOsGetThreadId() returns zero.
3339 A non-zero value is required by the core ACPICA code to ensure the proper
3340 operation of AML mutexes and recursive control methods.
3342 The DSDT is now the only ACPI table that determines whether the AML
3343 interpreter is in 32-bit or 64-bit mode. Not really a functional change, but
3344 the hooks for per-table 32/64 switching have been removed from the code. A
3345 clarification to the ACPI specification is forthcoming in ACPI 3.0B.
3347 Fixed a possible leak of an OwnerID in the error path of
3348 AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID
3349 deletion to a single place in AcpiTbUninstallTable to correct possible leaks
3350 when using the AcpiTbDeleteTablesByType interface (with assistance from
3353 Fixed a problem with Serialized control methods where the semaphore
3354 associated with the method could be over-signaled after multiple method
3357 Fixed two issues with the locking of the internal namespace data structure.
3358 Both the Unload() operator and AcpiUnloadTable interface now lock the
3359 namespace during the namespace deletion associated with the table unload
3360 (with assistance from Linn Crosetto.)
3362 Fixed problem reports (Valery Podrezov) integrated:
3363 - Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426)
3365 Fixed problem reports (Fiodor Suietov) integrated:
3366 - Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369)
3367 - On Address Space handler deletion, needless deactivation call (BZ 374)
3368 - AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 375)
3369 - Possible memory leak, Notify sub-objects of Processor, Power, ThermalZone
3371 - AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378)
3372 - Minimum Length of RSDT should be validated (BZ 379)
3373 - AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no
3375 - AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type loaded
3378 Example Code and Data Size: These are the sizes for the OS-independent
3379 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3380 debug version of the code includes the debug output trace mechanism and has
3381 a much larger code and data size.
3384 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
3385 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
3387 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
3388 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
3391 2) iASL Compiler/Disassembler and Tools:
3393 Fixed problem reports:
3394 Compiler segfault when ASL contains a long (>1024) String declaration (BZ
3397 ----------------------------------------
3398 23 June 2006. Summary of changes for version 20060623:
3400 1) ACPI CA Core Subsystem:
3402 Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This
3403 allows the type to be customized to the host OS for improved efficiency
3404 (since a spinlock is usually a very small object.)
3406 Implemented support for "ignored" bits in the ACPI registers. According to
3407 the ACPI specification, these bits should be preserved when writing the
3408 registers via a read/modify/write cycle. There are 3 bits preserved in this
3409 manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11].
3411 Implemented the initial deployment of new OSL mutex interfaces. Since some
3412 host operating systems have separate mutex and semaphore objects, this
3413 feature was requested. The base code now uses mutexes (and the new mutex
3414 interfaces) wherever a binary semaphore was used previously. However, for
3415 the current release, the mutex interfaces are defined as macros to map them
3416 to the existing semaphore interfaces. Therefore, no OSL changes are required
3417 at this time. (See acpiosxf.h)
3419 Fixed several problems with the support for the control method SyncLevel
3420 parameter. The SyncLevel now works according to the ACPI specification and
3421 in concert with the Mutex SyncLevel parameter, since the current SyncLevel
3422 is a property of the executing thread. Mutual exclusion for control methods
3423 is now implemented with a mutex instead of a semaphore.
3425 Fixed three instances of the use of the C shift operator in the bitfield
3426 support code (exfldio.c) to avoid the use of a shift value larger than the
3427 target data width. The behavior of C compilers is undefined in this case and
3428 can cause unpredictable results, and therefore the case must be detected and
3429 avoided. (Fiodor Suietov)
3431 Added an info message whenever an SSDT or OEM table is loaded dynamically
3432 via the Load() or LoadTable() ASL operators. This should improve debugging
3433 capability since it will show exactly what tables have been loaded (beyond
3434 the tables present in the RSDT/XSDT.)
3436 Example Code and Data Size: These are the sizes for the OS-independent
3437 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3438 debug version of the code includes the debug output trace mechanism and has
3439 a much larger code and data size.
3442 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
3443 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
3445 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
3446 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
3449 2) iASL Compiler/Disassembler and Tools:
3451 No changes for this release.
3453 ----------------------------------------
3454 08 June 2006. Summary of changes for version 20060608:
3456 1) ACPI CA Core Subsystem:
3458 Converted the locking mutex used for the ACPI hardware to a spinlock. This
3459 change should eliminate all problems caused by attempting to acquire a
3460 semaphore at interrupt level, and it means that all ACPICA external
3461 interfaces that directly access the ACPI hardware can be safely called from
3462 interrupt level. OSL code that implements the semaphore interfaces should be
3463 able to eliminate any workarounds for being called at interrupt level.
3465 Fixed a regression introduced in 20060526 where the ACPI device
3466 initialization could be prematurely aborted with an AE_NOT_FOUND if a device
3467 did not have an optional _INI method.
3469 Fixed an IndexField issue where a write to the Data Register should be
3470 limited in size to the AccessSize (width) of the IndexField itself. (BZ 433,
3473 Fixed problem reports (Valery Podrezov) integrated:
3474 - Allow store of ThermalZone objects to Debug object (BZ 5369/5370)
3476 Fixed problem reports (Fiodor Suietov) integrated:
3477 - AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364)
3479 Removed four global mutexes that were obsolete and were no longer being
3482 Example Code and Data Size: These are the sizes for the OS-independent
3483 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3484 debug version of the code includes the debug output trace mechanism and has
3485 a much larger code and data size.
3488 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
3489 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
3491 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
3492 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
3495 2) iASL Compiler/Disassembler and Tools:
3497 Fixed a fault when using -g option (get tables from registry) on Windows
3500 Fixed problem reports integrated:
3501 - Generate error if CreateField NumBits parameter is zero. (BZ 405)
3502 - Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor
3504 - Global table revision override (-r) is ignored (BZ 413)
3506 ----------------------------------------
3507 26 May 2006. Summary of changes for version 20060526:
3509 1) ACPI CA Core Subsystem:
3511 Restructured, flattened, and simplified the internal interfaces for
3512 namespace object evaluation - resulting in smaller code, less CPU stack use,
3513 and fewer interfaces. (With assistance from Mikhail Kouzmich)
3515 Fixed a problem with the CopyObject operator where the first parameter was
3516 not typed correctly for the parser, interpreter, compiler, and disassembler.
3517 Caused various errors and unexpected behavior.
3519 Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits
3520 produced incorrect results with some C compilers. Since the behavior of C
3521 compilers when the shift value is larger than the datatype width is
3522 apparently not well defined, the interpreter now detects this condition and
3523 simply returns zero as expected in all such cases. (BZ 395)
3525 Fixed problem reports (Valery Podrezov) integrated:
3526 - Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329)
3527 - Allow interpreter to handle nested method declarations (BZ 5361)
3529 Fixed problem reports (Fiodor Suietov) integrated:
3530 - AcpiTerminate doesn't free debug memory allocation list objects (BZ 355)
3531 - After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 356)
3532 - AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357)
3533 - Resource Manager should return AE_TYPE for non-device objects (BZ 358)
3534 - Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359)
3535 - Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360)
3536 - Incomplete cleanup branch in AcpiPsParseAml (BZ 361)
3537 - Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362)
3538 - AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ 365)
3539 - Status of the Global Initialization Handler call not used (BZ 366)
3540 - Incorrect object parameter to Global Initialization Handler (BZ 367)
3542 Example Code and Data Size: These are the sizes for the OS-independent
3543 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3544 debug version of the code includes the debug output trace mechanism and has
3545 a much larger code and data size.
3548 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
3549 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
3551 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
3552 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
3555 2) iASL Compiler/Disassembler and Tools:
3557 Modified the parser to allow the names IO, DMA, and IRQ to be used as
3558 namespace identifiers with no collision with existing resource descriptor
3559 macro names. This provides compatibility with other ASL compilers and is
3560 most useful for disassembly/recompilation of existing tables without parse
3561 errors. (With assistance from Thomas Renninger)
3563 Disassembler: fixed an incorrect disassembly problem with the
3564 DataTableRegion and CopyObject operators. Fixed a possible fault during
3565 disassembly of some Alias operators.
3567 ----------------------------------------
3568 12 May 2006. Summary of changes for version 20060512:
3570 1) ACPI CA Core Subsystem:
3572 Replaced the AcpiOsQueueForExecution interface with a new interface named
3573 AcpiOsExecute. The major difference is that the new interface does not have
3574 a Priority parameter, this appeared to be useless and has been replaced by a
3575 Type parameter. The Type tells the host what type of execution is being
3576 requested, such as global lock handler, notify handler, GPE handler, etc.
3577 This allows the host to queue and execute the request as appropriate for the
3578 request type, possibly using different work queues and different priorities
3579 for the various request types. This enables fixes for multithreading
3580 deadlock problems such as BZ #5534, and will require changes to all existing
3581 OS interface layers. (Alexey Starikovskiy and Bob Moore)
3583 Fixed a possible memory leak associated with the support for the so-called
3584 "implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor
3587 Fixed a problem with the Load() operator where a table load from an
3588 operation region could overwrite an internal table buffer by up to 7 bytes
3589 and cause alignment faults on IPF systems. (With assistance from Luming Yu)
3591 Example Code and Data Size: These are the sizes for the OS-independent
3592 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3593 debug version of the code includes the debug output trace mechanism and has
3594 a much larger code and data size.
3597 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
3598 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
3600 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
3601 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
3605 2) iASL Compiler/Disassembler and Tools:
3607 Disassembler: Implemented support to cross reference the internal namespace
3608 and automatically generate ASL External() statements for symbols not defined
3609 within the current table being disassembled. This will simplify the
3610 disassembly and recompilation of interdependent tables such as SSDTs since
3611 these statements will no longer have to be added manually.
3613 Disassembler: Implemented experimental support to automatically detect
3614 invocations of external control methods and generate appropriate External()
3615 statements. This is problematic because the AML cannot be correctly parsed
3616 until the number of arguments for each control method is known. Currently,
3617 standalone method invocations and invocations as the source operand of a
3618 Store() statement are supported.
3620 Disassembler: Implemented support for the ASL pseudo-operators LNotEqual,
3621 LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()),
3622 LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code
3623 more readable and likely closer to the original ASL source.
3625 ----------------------------------------
3626 21 April 2006. Summary of changes for version 20060421:
3628 1) ACPI CA Core Subsystem:
3630 Removed a device initialization optimization introduced in 20051216 where
3631 the _STA method was not run unless an _INI was also present for the same
3632 device. This optimization could cause problems because it could allow _INI
3633 methods to be run within a not-present device subtree. (If a not-present
3634 device had no _INI, _STA would not be run, the not-present status would not
3635 be discovered, and the children of the device would be incorrectly
3638 Implemented a new _STA optimization where namespace subtrees that do not
3639 contain _INI are identified and ignored during device initialization.
3640 Selectively running _STA can significantly improve boot time on large
3641 machines (with assistance from Len Brown.)
3643 Implemented support for the device initialization case where the returned
3644 _STA flags indicate a device not-present but functioning. In this case, _INI
3645 is not run, but the device children are examined for presence, as per the
3648 Implemented an additional change to the IndexField support in order to
3649 conform to MS behavior. The value written to the Index Register is not
3650 simply a byte offset, it is a byte offset in units of the access width of
3651 the parent Index Field. (Fiodor Suietov)
3653 Defined and deployed a new OSL interface, AcpiOsValidateAddress. This
3654 interface is called during the creation of all AML operation regions, and
3655 allows the host OS to exert control over what addresses it will allow the
3656 AML code to access. Operation Regions whose addresses are disallowed will
3657 cause a runtime exception when they are actually accessed (will not affect
3658 or abort table loading.) See oswinxf or osunixxf for an example
3661 Defined and deployed a new OSL interface, AcpiOsValidateInterface. This
3662 interface allows the host OS to match the various "optional"
3663 interface/behavior strings for the _OSI predefined control method as
3664 appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf
3665 for an example implementation.
3667 Restructured and corrected various problems in the exception handling code
3668 paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod
3669 (with assistance from Takayoshi Kochi.)
3671 Modified the Linux source converter to ignore quoted string literals while
3672 converting identifiers from mixed to lower case. This will correct problems
3673 with the disassembler and other areas where such strings must not be
3676 The ACPI_FUNCTION_* macros no longer require quotes around the function
3677 name. This allows the Linux source converter to convert the names, now that
3678 the converter ignores quoted strings.
3680 Example Code and Data Size: These are the sizes for the OS-independent
3681 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3682 debug version of the code includes the debug output trace mechanism and has
3683 a much larger code and data size.
3687 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
3688 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
3690 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
3691 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
3694 2) iASL Compiler/Disassembler and Tools:
3696 Implemented 3 new warnings for iASL, and implemented multiple warning levels
3699 1) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is not
3700 WAIT_FOREVER (0xFFFF) and the code does not examine the return value to
3701 check for the possible timeout, a warning is issued.
3703 2) Useless operators: If an ASL operator does not specify an optional target
3704 operand and it also does not use the function return value from the
3705 operator, a warning is issued since the operator effectively does nothing.
3707 3) Unreferenced objects: If a namespace object is created, but never
3708 referenced, a warning is issued. This is a warning level 2 since there are
3709 cases where this is ok, such as when a secondary table is loaded that uses
3710 the unreferenced objects. Even so, care is taken to only flag objects that
3711 don't look like they will ever be used. For example, the reserved methods
3712 (starting with an underscore) are usually not referenced because it is
3713 expected that the OS will invoke them.
3715 ----------------------------------------
3716 31 March 2006. Summary of changes for version 20060331:
3718 1) ACPI CA Core Subsystem:
3720 Implemented header file support for the following additional ACPI tables:
3721 ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this support,
3722 all current and known ACPI tables are now defined in the ACPICA headers and
3723 are available for use by device drivers and other software.
3725 Implemented support to allow tables that contain ACPI names with invalid
3726 characters to be loaded. Previously, this would cause the table load to
3727 fail, but since there are several known cases of such tables on existing
3728 machines, this change was made to enable ACPI support for them. Also, this
3729 matches the behavior of the Microsoft ACPI implementation.
3731 Fixed a couple regressions introduced during the memory optimization in the
3732 20060317 release. The namespace node definition required additional
3733 reorganization and an internal datatype that had been changed to 8-bit was
3734 restored to 32-bit. (Valery Podrezov)
3736 Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState
3737 could be passed through to AcpiOsReleaseObject which is unexpected. Such
3738 null pointers are now trapped and ignored, matching the behavior of the
3739 previous implementation before the deployment of AcpiOsReleaseObject.
3740 (Valery Podrezov, Fiodor Suietov)
3742 Fixed a memory mapping leak during the deletion of a SystemMemory operation
3743 region where a cached memory mapping was not deleted. This became a
3744 noticeable problem for operation regions that are defined within frequently
3745 used control methods. (Dana Meyers)
3747 Reorganized the ACPI table header files into two main files: one for the
3748 ACPI tables consumed by the ACPICA core, and another for the miscellaneous
3749 ACPI tables that are consumed by the drivers and other software. The various
3750 FADT definitions were merged into one common section and three different
3751 tables (ACPI 1.0, 1.0+, and 2.0)
3753 Example Code and Data Size: These are the sizes for the OS-independent
3754 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3755 debug version of the code includes the debug output trace mechanism and has
3756 a much larger code and data size.
3759 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
3760 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
3762 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
3763 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
3766 2) iASL Compiler/Disassembler and Tools:
3768 Disassembler: Implemented support to decode and format all non-AML ACPI
3769 tables (tables other than DSDTs and SSDTs.) This includes the new tables
3770 added to the ACPICA headers, therefore all current and known ACPI tables are
3773 Disassembler: The change to allow ACPI names with invalid characters also
3774 enables the disassembly of such tables. Invalid characters within names are
3775 changed to '*' to make the name printable; the iASL compiler will still
3776 generate an error for such names, however, since this is an invalid ACPI
3779 Implemented an option for AcpiXtract (-a) to extract all tables found in the
3780 input file. The default invocation extracts only the DSDTs and SSDTs.
3782 Fixed a couple of gcc generation issues for iASL and AcpiExec and added a
3783 makefile for the AcpiXtract utility.
3785 ----------------------------------------
3786 17 March 2006. Summary of changes for version 20060317:
3788 1) ACPI CA Core Subsystem:
3790 Implemented the use of a cache object for all internal namespace nodes.
3791 Since there are about 1000 static nodes in a typical system, this will
3792 decrease memory use for cache implementations that minimize per-allocation
3793 overhead (such as a slab allocator.)
3795 Removed the reference count mechanism for internal namespace nodes, since it
3796 was deemed unnecessary. This reduces the size of each namespace node by
3797 about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit case,
3798 and 32 bytes for the 64-bit case.
3800 Optimized several internal data structures to reduce object size on 64-bit
3801 platforms by packing data within the 64-bit alignment. This includes the
3802 frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static
3803 instances corresponding to the namespace objects.
3805 Added two new strings for the predefined _OSI method: "Windows 2001.1 SP1"
3808 Split the allocation tracking mechanism out to a separate file, from
3809 utalloc.c to uttrack.c. This mechanism appears to be only useful for
3810 application-level code. Kernels may wish to not include uttrack.c in
3813 Removed all remnants of the obsolete ACPI_REPORT_* macros and the associated
3814 code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING
3817 Code and Data Size: These are the sizes for the acpica.lib produced by the
3818 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI
3819 driver or OSPM code. The debug version of the code includes the debug output
3820 trace mechanism and has a much larger code and data size. Note that these
3821 values will vary depending on the efficiency of the compiler and the
3822 compiler options used during generation.
3825 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
3826 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
3828 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
3829 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
3832 2) iASL Compiler/Disassembler and Tools:
3834 Implemented an ANSI C version of the acpixtract utility. This version will
3835 automatically extract the DSDT and all SSDTs from the input acpidump text
3836 file and dump the binary output to separate files. It can also display a
3837 summary of the input file including the headers for each table found and
3838 will extract any single ACPI table, with any signature. (See
3839 source/tools/acpixtract)
3841 ----------------------------------------
3842 10 March 2006. Summary of changes for version 20060310:
3844 1) ACPI CA Core Subsystem:
3846 Tagged all external interfaces to the subsystem with the new
3847 ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to assist
3848 kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL
3849 macro. The default definition is NULL.
3851 Added the ACPI_THREAD_ID type for the return value from AcpiOsGetThreadId.
3852 This allows the host to define this as necessary to simplify kernel
3853 integration. The default definition is ACPI_NATIVE_UINT.
3855 Fixed two interpreter problems related to error processing, the deletion of
3856 objects, and placing invalid pointers onto the internal operator result
3857 stack. BZ 6028, 6151 (Valery Podrezov)
3859 Increased the reference count threshold where a warning is emitted for large
3860 reference counts in order to eliminate unnecessary warnings on systems with
3861 large namespaces (especially 64-bit.) Increased the value from 0x400 to
3864 Due to universal disagreement as to the meaning of the 'c' in the calloc()
3865 function, the ACPI_MEM_CALLOCATE macro has been renamed to
3866 ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'.
3867 ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and
3870 Code and Data Size: These are the sizes for the acpica.lib produced by the
3871 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI
3872 driver or OSPM code. The debug version of the code includes the debug output
3873 trace mechanism and has a much larger code and data size. Note that these
3874 values will vary depending on the efficiency of the compiler and the
3875 compiler options used during generation.
3878 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
3879 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
3881 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
3882 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
3885 2) iASL Compiler/Disassembler:
3887 Disassembler: implemented support for symbolic resource descriptor
3888 references. If a CreateXxxxField operator references a fixed offset within a
3889 resource descriptor, a name is assigned to the descriptor and the offset is
3890 translated to the appropriate resource tag and pathname. The addition of
3891 this support brings the disassembled code very close to the original ASL
3892 source code and helps eliminate run-time errors when the disassembled code
3893 is modified (and recompiled) in such a way as to invalidate the original
3896 Implemented support for a Descriptor Name as the last parameter to the ASL
3897 Register() macro. This parameter was inadvertently left out of the ACPI
3898 specification, and will be added for ACPI 3.0b.
3900 Fixed a problem where the use of the "_OSI" string (versus the full path
3901 "\_OSI") caused an internal compiler error. ("No back ptr to op")
3903 Fixed a problem with the error message that occurs when an invalid string is
3904 used for a _HID object (such as one with an embedded asterisk: "*PNP010A".)
3905 The correct message is now displayed.
3907 ----------------------------------------
3908 17 February 2006. Summary of changes for version 20060217:
3910 1) ACPI CA Core Subsystem:
3912 Implemented a change to the IndexField support to match the behavior of the
3913 Microsoft AML interpreter. The value written to the Index register is now a
3914 byte offset, no longer an index based upon the width of the Data register.
3915 This should fix IndexField problems seen on some machines where the Data
3916 register is not exactly one byte wide. The ACPI specification will be
3917 clarified on this point.
3919 Fixed a problem where several resource descriptor types could overrun the
3920 internal descriptor buffer due to size miscalculation: VendorShort,
3921 VendorLong, and Interrupt. This was noticed on IA64 machines, but could
3922 affect all platforms.
3924 Fixed a problem where individual resource descriptors were misaligned within
3925 the internal buffer, causing alignment faults on IA64 platforms.
3927 Code and Data Size: These are the sizes for the acpica.lib produced by the
3928 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI
3929 driver or OSPM code. The debug version of the code includes the debug output
3930 trace mechanism and has a much larger code and data size. Note that these
3931 values will vary depending on the efficiency of the compiler and the
3932 compiler options used during generation.
3935 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
3936 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
3938 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
3939 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
3942 2) iASL Compiler/Disassembler:
3944 Implemented support for new reserved names: _WDG and _WED are Microsoft
3945 extensions for Windows Instrumentation Management, _TDL is a new ACPI-
3946 defined method (Throttling Depth Limit.)
3948 Fixed a problem where a zero-length VendorShort or VendorLong resource
3949 descriptor was incorrectly emitted as a descriptor of length one.
3951 ----------------------------------------
3952 10 February 2006. Summary of changes for version 20060210:
3954 1) ACPI CA Core Subsystem:
3956 Removed a couple of extraneous ACPI_ERROR messages that appeared during
3957 normal execution. These became apparent after the conversion from
3960 Fixed a problem where the CreateField operator could hang if the BitIndex or
3961 NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359)
3963 Fixed a problem where a DeRefOf operation on a buffer object incorrectly
3964 failed with an exception. This also fixes a couple of related RefOf and
3965 DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387)
3967 Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead of
3968 AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, BZ
3971 Implemented a memory cleanup at the end of the execution of each iteration
3972 of an AML While() loop, preventing the accumulation of outstanding objects.
3973 (Valery Podrezov, BZ 5427)
3975 Eliminated a chunk of duplicate code in the object resolution code. (Valery
3978 Fixed several warnings during the 64-bit code generation.
3980 The AcpiSrc source code conversion tool now inserts one line of whitespace
3981 after an if() statement that is followed immediately by a comment, improving
3982 readability of the Linux code.
3984 Code and Data Size: The current and previous library sizes for the core
3985 subsystem are shown below. These are the code and data sizes for the
3986 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
3987 values do not include any ACPI driver or OSPM code. The debug version of the
3988 code includes the debug output trace mechanism and has a much larger code
3989 and data size. Note that these values will vary depending on the efficiency
3990 of the compiler and the compiler options used during generation.
3993 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
3994 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
3996 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
3997 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
4000 2) iASL Compiler/Disassembler:
4002 Fixed a problem with the disassembly of a BankField operator with a complex
4003 expression for the BankValue parameter.
4005 ----------------------------------------
4006 27 January 2006. Summary of changes for version 20060127:
4008 1) ACPI CA Core Subsystem:
4010 Implemented support in the Resource Manager to allow unresolved namestring
4011 references within resource package objects for the _PRT method. This support
4012 is in addition to the previously implemented unresolved reference support
4013 within the AML parser. If the interpreter slack mode is enabled, these
4014 unresolved references will be passed through to the caller as a NULL package
4017 Implemented and deployed new macros and functions for error and warning
4018 messages across the subsystem. These macros are simpler and generate less
4019 code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION,
4020 ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older
4021 macros remain defined to allow ACPI drivers time to migrate to the new
4024 Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of the
4025 Acquire/Release Lock OSL interfaces.
4027 Fixed a problem where Alias ASL operators are sometimes not correctly
4028 resolved, in both the interpreter and the iASL compiler.
4030 Fixed several problems with the implementation of the ConcatenateResTemplate
4031 ASL operator. As per the ACPI specification, zero length buffers are now
4032 treated as a single EndTag. One-length buffers always cause a fatal
4033 exception. Non-zero length buffers that do not end with a full 2-byte EndTag
4034 cause a fatal exception.
4036 Fixed a possible structure overwrite in the AcpiGetObjectInfo external
4037 interface. (With assistance from Thomas Renninger)
4039 Code and Data Size: The current and previous library sizes for the core
4040 subsystem are shown below. These are the code and data sizes for the
4041 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
4042 values do not include any ACPI driver or OSPM code. The debug version of the
4043 code includes the debug output trace mechanism and has a much larger code
4044 and data size. Note that these values will vary depending on the efficiency
4045 of the compiler and the compiler options used during generation.
4048 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
4049 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
4051 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
4052 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
4055 2) iASL Compiler/Disassembler:
4057 Fixed an internal error that was generated for any forward references to ASL
4060 ----------------------------------------
4061 13 January 2006. Summary of changes for version 20060113:
4063 1) ACPI CA Core Subsystem:
4065 Added 2006 copyright to all module headers and signons. This affects
4066 virtually every file in the ACPICA core subsystem, iASL compiler, and the
4069 Enhanced the ACPICA error reporting in order to simplify user migration to
4070 the non-debug version of ACPICA. Replaced all instances of the
4071 ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN debug
4072 levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros,
4073 respectively. This preserves all error and warning messages in the non-debug
4074 version of the ACPICA code (this has been referred to as the "debug lite"
4075 option.) Over 200 cases were converted to create a total of over 380
4076 error/warning messages across the ACPICA code. This increases the code and
4077 data size of the default non-debug version of the code somewhat (about 13K),
4078 but all error/warning reporting may be disabled if desired (and code
4079 eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time
4080 configuration option. The size of the debug version of ACPICA remains about
4083 Fixed a memory leak within the AML Debugger "Set" command. One object was
4084 not properly deleted for every successful invocation of the command.
4086 Code and Data Size: The current and previous library sizes for the core
4087 subsystem are shown below. These are the code and data sizes for the
4088 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
4089 values do not include any ACPI driver or OSPM code. The debug version of the
4090 code includes the debug output trace mechanism and has a much larger code
4091 and data size. Note that these values will vary depending on the efficiency
4092 of the compiler and the compiler options used during generation.
4095 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
4096 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
4098 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
4099 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
4102 2) iASL Compiler/Disassembler:
4104 The compiler now officially supports the ACPI 3.0a specification that was
4105 released on December 30, 2005. (Specification is available at www.acpi.info)
4107 ----------------------------------------
4108 16 December 2005. Summary of changes for version 20051216:
4110 1) ACPI CA Core Subsystem:
4112 Implemented optional support to allow unresolved names within ASL Package
4113 objects. A null object is inserted in the package when a named reference
4114 cannot be located in the current namespace. Enabled via the interpreter
4115 slack flag, this should eliminate AE_NOT_FOUND exceptions seen on machines
4116 that contain such code.
4118 Implemented an optimization to the initialization sequence that can improve
4119 boot time. During ACPI device initialization, the _STA method is now run if
4120 and only if the _INI method exists. The _STA method is used to determine if
4121 the device is present; An _INI can only be run if _STA returns present, but
4122 it is a waste of time to run the _STA method if the _INI does not exist.
4123 (Prototype and assistance from Dong Wei)
4125 Implemented use of the C99 uintptr_t for the pointer casting macros if it is
4126 available in the current compiler. Otherwise, the default (void *) cast is
4129 Fixed some possible memory leaks found within the execution path of the
4130 Break, Continue, If, and CreateField operators. (Valery Podrezov)
4132 Fixed a problem introduced in the 20051202 release where an exception is
4133 generated during method execution if a control method attempts to declare
4136 Moved resource descriptor string constants that are used by both the AML
4137 disassembler and AML debugger to the common utilities directory so that
4138 these components are independent.
4140 Implemented support in the AcpiExec utility (-e switch) to globally ignore
4141 exceptions during control method execution (method is not aborted.)
4143 Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix
4146 Code and Data Size: The current and previous library sizes for the core
4147 subsystem are shown below. These are the code and data sizes for the
4148 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
4149 values do not include any ACPI driver or OSPM code. The debug version of the
4150 code includes the debug output trace mechanism and has a much larger code
4151 and data size. Note that these values will vary depending on the efficiency
4152 of the compiler and the compiler options used during generation.
4155 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
4156 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
4158 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
4159 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
4162 2) iASL Compiler/Disassembler:
4164 Fixed a problem where a CPU stack overflow fault could occur if a recursive
4165 method call was made from within a Return statement.
4167 ----------------------------------------
4168 02 December 2005. Summary of changes for version 20051202:
4170 1) ACPI CA Core Subsystem:
4172 Modified the parsing of control methods to no longer create namespace
4173 objects during the first pass of the parse. Objects are now created only
4174 during the execute phase, at the moment the namespace creation operator is
4175 encountered in the AML (Name, OperationRegion, CreateByteField, etc.) This
4176 should eliminate ALREADY_EXISTS exceptions seen on some machines where
4177 reentrant control methods are protected by an AML mutex. The mutex will now
4178 correctly block multiple threads from attempting to create the same object
4181 Increased the number of available Owner Ids for namespace object tracking
4182 from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen on
4183 some machines with a large number of ACPI tables (either static or dynamic).
4185 Fixed a problem with the AcpiExec utility where a fault could occur when the
4186 -b switch (batch mode) is used.
4188 Enhanced the namespace dump routine to output the owner ID for each
4191 Code and Data Size: The current and previous library sizes for the core
4192 subsystem are shown below. These are the code and data sizes for the
4193 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
4194 values do not include any ACPI driver or OSPM code. The debug version of the
4195 code includes the debug output trace mechanism and has a much larger code
4196 and data size. Note that these values will vary depending on the efficiency
4197 of the compiler and the compiler options used during generation.
4200 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
4201 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
4203 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
4204 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
4207 2) iASL Compiler/Disassembler:
4209 Fixed a parse error during compilation of certain Switch/Case constructs. To
4210 simplify the parse, the grammar now allows for multiple Default statements
4211 and this error is now detected and flagged during the analysis phase.
4213 Disassembler: The disassembly now includes the contents of the original
4214 table header within a comment at the start of the file. This includes the
4215 name and version of the original ASL compiler.
4217 ----------------------------------------
4218 17 November 2005. Summary of changes for version 20051117:
4220 1) ACPI CA Core Subsystem:
4222 Fixed a problem in the AML parser where the method thread count could be
4223 decremented below zero if any errors occurred during the method parse phase.
4224 This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some machines.
4225 This also fixed a related regression with the mechanism that detects and
4226 corrects methods that cannot properly handle reentrancy (related to the
4227 deployment of the new OwnerId mechanism.)
4229 Eliminated the pre-parsing of control methods (to detect errors) during
4230 table load. Related to the problem above, this was causing unwind issues if
4231 any errors occurred during the parse, and it seemed to be overkill. A table
4232 load should not be aborted if there are problems with any single control
4233 method, thus rendering this feature rather pointless.
4235 Fixed a problem with the new table-driven resource manager where an internal
4236 buffer overflow could occur for small resource templates.
4238 Implemented a new external interface, AcpiGetVendorResource. This interface
4239 will find and return a vendor-defined resource descriptor within a _CRS or
4240 _PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn Helgaas.
4242 Removed the length limit (200) on string objects as per the upcoming ACPI
4243 3.0A specification. This affects the following areas of the interpreter: 1)
4244 any implicit conversion of a Buffer to a String, 2) a String object result
4245 of the ASL Concatentate operator, 3) the String object result of the ASL
4248 Fixed a problem in the Windows OS interface layer (OSL) where a WAIT_FOREVER
4249 on a semaphore object would incorrectly timeout. This allows the
4250 multithreading features of the AcpiExec utility to work properly under
4253 Updated the Linux makefiles for the iASL compiler and AcpiExec to include
4254 the recently added file named "utresrc.c".
4256 Code and Data Size: The current and previous library sizes for the core
4257 subsystem are shown below. These are the code and data sizes for the
4258 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
4259 values do not include any ACPI driver or OSPM code. The debug version of the
4260 code includes the debug output trace mechanism and has a much larger code
4261 and data size. Note that these values will vary depending on the efficiency
4262 of the compiler and the compiler options used during generation.
4265 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
4266 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
4268 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
4269 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
4272 2) iASL Compiler/Disassembler:
4274 Removed the limit (200) on string objects as per the upcoming ACPI 3.0A
4275 specification. For the iASL compiler, this means that string literals within
4276 the source ASL can be of any length.
4278 Enhanced the listing output to dump the AML code for resource descriptors
4279 immediately after the ASL code for each descriptor, instead of in a block at
4280 the end of the entire resource template.
4282 Enhanced the compiler debug output to dump the entire original parse tree
4283 constructed during the parse phase, before any transforms are applied to the
4284 tree. The transformed tree is dumped also.
4286 ----------------------------------------
4287 02 November 2005. Summary of changes for version 20051102:
4289 1) ACPI CA Core Subsystem:
4291 Modified the subsystem initialization sequence to improve GPE support. The
4292 GPE initialization has been split into two parts in order to defer execution
4293 of the _PRW methods (Power Resources for Wake) until after the hardware is
4294 fully initialized and the SCI handler is installed. This allows the _PRW
4295 methods to access fields protected by the Global Lock. This will fix systems
4296 where a NO_GLOBAL_LOCK exception has been seen during initialization.
4298 Converted the ACPI internal object disassemble and display code within the
4299 AML debugger to fully table-driven operation, reducing code size and
4300 increasing maintainability.
4302 Fixed a regression with the ConcatenateResTemplate() ASL operator introduced
4303 in the 20051021 release.
4305 Implemented support for "local" internal ACPI object types within the
4306 debugger "Object" command and the AcpiWalkNamespace external interfaces.
4307 These local types include RegionFields, BankFields, IndexFields, Alias, and
4310 Moved common AML resource handling code into a new file, "utresrc.c". This
4311 code is shared by both the Resource Manager and the AML Debugger.
4313 Code and Data Size: The current and previous library sizes for the core
4314 subsystem are shown below. These are the code and data sizes for the
4315 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
4316 values do not include any ACPI driver or OSPM code. The debug version of the
4317 code includes the debug output trace mechanism and has a much larger code
4318 and data size. Note that these values will vary depending on the efficiency
4319 of the compiler and the compiler options used during generation.
4322 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
4323 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
4325 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
4326 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
4329 2) iASL Compiler/Disassembler:
4331 Fixed a problem with very large initializer lists (more than 4000 elements)
4332 for both Buffer and Package objects where the parse stack could overflow.
4334 Enhanced the pre-compile source code scan for non-ASCII characters to ignore
4335 characters within comment fields. The scan is now always performed and is no
4336 longer optional, detecting invalid characters within a source file
4337 immediately rather than during the parse phase or later.
4339 Enhanced the ASL grammar definition to force early reductions on all list-
4340 style grammar elements so that the overall parse stack usage is greatly
4341 reduced. This should improve performance and reduce the possibility of parse
4344 Eliminated all reduce/reduce conflicts in the iASL parser generation. Also,
4345 with the addition of a %expected statement, the compiler generates from
4346 source with no warnings.
4348 Fixed a possible segment fault in the disassembler if the input filename
4349 does not contain a "dot" extension (Thomas Renninger).
4351 ----------------------------------------
4352 21 October 2005. Summary of changes for version 20051021:
4354 1) ACPI CA Core Subsystem:
4356 Implemented support for the EM64T and other x86-64 processors. This
4357 essentially entails recognizing that these processors support non-aligned
4358 memory transfers. Previously, all 64-bit processors were assumed to lack
4359 hardware support for non-aligned transfers.
4361 Completed conversion of the Resource Manager to nearly full table-driven
4362 operation. Specifically, the resource conversion code (convert AML to
4363 internal format and the reverse) and the debug code to dump internal
4364 resource descriptors are fully table-driven, reducing code and data size and
4365 improving maintainability.
4367 The OSL interfaces for Acquire and Release Lock now use a 64-bit flag word
4368 on 64-bit processors instead of a fixed 32-bit word. (With assistance from
4369 Alexey Starikovskiy)
4371 Implemented support within the resource conversion code for the Type-
4372 Specific byte within the various ACPI 3.0 *WordSpace macros.
4374 Fixed some issues within the resource conversion code for the type-specific
4375 flags for both Memory and I/O address resource descriptors. For Memory,
4376 implemented support for the MTP and TTP flags. For I/O, split the TRS and
4377 TTP flags into two separate fields.
4379 Code and Data Size: The current and previous library sizes for the core
4380 subsystem are shown below. These are the code and data sizes for the
4381 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
4382 values do not include any ACPI driver or OSPM code. The debug version of the
4383 code includes the debug output trace mechanism and has a much larger code
4384 and data size. Note that these values will vary depending on the efficiency
4385 of the compiler and the compiler options used during generation.
4388 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
4389 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
4391 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
4392 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
4396 2) iASL Compiler/Disassembler:
4398 Relaxed a compiler restriction that disallowed a ResourceIndex byte if the
4399 corresponding ResourceSource string was not also present in a resource
4400 descriptor declaration. This restriction caused problems with existing
4401 AML/ASL code that includes the Index byte without the string. When such AML
4402 was disassembled, it could not be compiled without modification. Further,
4403 the modified code created a resource template with a different size than the
4404 original, breaking code that used fixed offsets into the resource template
4407 Removed a recent feature of the disassembler to ignore a lone ResourceIndex
4408 byte. This byte is now emitted if present so that the exact AML can be
4409 reproduced when the disassembled code is recompiled.
4411 Improved comments and text alignment for the resource descriptor code
4412 emitted by the disassembler.
4414 Implemented disassembler support for the ACPI 3.0 AccessSize field within a
4415 Register() resource descriptor.
4417 ----------------------------------------
4418 30 September 2005. Summary of changes for version 20050930:
4420 1) ACPI CA Core Subsystem:
4422 Completed a major overhaul of the Resource Manager code - specifically,
4423 optimizations in the area of the AML/internal resource conversion code. The
4424 code has been optimized to simplify and eliminate duplicated code, CPU stack
4425 use has been decreased by optimizing function parameters and local
4426 variables, and naming conventions across the manager have been standardized
4427 for clarity and ease of maintenance (this includes function, parameter,
4428 variable, and struct/typedef names.) The update may force changes in some
4429 driver code, depending on how resources are handled by the host OS.
4431 All Resource Manager dispatch and information tables have been moved to a
4432 single location for clarity and ease of maintenance. One new file was
4433 created, named "rsinfo.c".
4435 The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to
4436 guarantee that the argument is not evaluated twice, making them less prone
4437 to macro side-effects. However, since there exists the possibility of
4438 additional stack use if a particular compiler cannot optimize them (such as
4439 in the debug generation case), the original macros are optionally available.
4440 Note that some invocations of the return_VALUE macro may now cause size
4441 mismatch warnings; the return_UINT8 and return_UINT32 macros are provided to
4442 eliminate these. (From Randy Dunlap)
4444 Implemented a new mechanism to enable debug tracing for individual control
4445 methods. A new external interface, AcpiDebugTrace, is provided to enable
4446 this mechanism. The intent is to allow the host OS to easily enable and
4447 disable tracing for problematic control methods. This interface can be
4448 easily exposed to a user or debugger interface if desired. See the file
4449 psxface.c for details.
4451 AcpiUtCallocate will now return a valid pointer if a length of zero is
4452 specified - a length of one is used and a warning is issued. This matches
4453 the behavior of AcpiUtAllocate.
4455 Code and Data Size: The current and previous library sizes for the core
4456 subsystem are shown below. These are the code and data sizes for the
4457 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
4458 values do not include any ACPI driver or OSPM code. The debug version of the
4459 code includes the debug output trace mechanism and has a much larger code
4460 and data size. Note that these values will vary depending on the efficiency
4461 of the compiler and the compiler options used during generation.
4464 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
4465 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
4467 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
4468 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
4471 2) iASL Compiler/Disassembler:
4473 A remark is issued if the effective compile-time length of a package or
4474 buffer is zero. Previously, this was a warning.
4476 ----------------------------------------
4477 16 September 2005. Summary of changes for version 20050916:
4479 1) ACPI CA Core Subsystem:
4481 Fixed a problem within the Resource Manager where support for the Generic
4482 Register descriptor was not fully implemented. This descriptor is now fully
4483 recognized, parsed, disassembled, and displayed.
4485 Completely restructured the Resource Manager code to utilize table-driven
4486 dispatch and lookup, eliminating many of the large switch() statements. This
4487 reduces overall subsystem code size and code complexity. Affects the
4488 resource parsing and construction, disassembly, and debug dump output.
4490 Cleaned up and restructured the debug dump output for all resource
4491 descriptors. Improved readability of the output and reduced code size.
4493 Fixed a problem where changes to internal data structures caused the
4494 optional ACPI_MUTEX_DEBUG code to fail compilation if specified.
4496 Code and Data Size: The current and previous library sizes for the core
4497 subsystem are shown below. These are the code and data sizes for the
4498 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
4499 values do not include any ACPI driver or OSPM code. The debug version of the
4500 code includes the debug output trace mechanism and has a much larger code
4501 and data size. Note that these values will vary depending on the efficiency
4502 of the compiler and the compiler options used during generation.
4505 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
4506 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
4508 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
4509 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
4512 2) iASL Compiler/Disassembler:
4514 Updated the disassembler to automatically insert an EndDependentFn() macro
4515 into the ASL stream if this macro is missing in the original AML code,
4516 simplifying compilation of the resulting ASL module.
4518 Fixed a problem in the disassembler where a disassembled ResourceSource
4519 string (within a large resource descriptor) was not surrounded by quotes and
4520 not followed by a comma, causing errors when the resulting ASL module was
4521 compiled. Also, escape sequences within a ResourceSource string are now
4522 handled correctly (especially "\\")
4524 ----------------------------------------
4525 02 September 2005. Summary of changes for version 20050902:
4527 1) ACPI CA Core Subsystem:
4529 Fixed a problem with the internal Owner ID allocation and deallocation
4530 mechanisms for control method execution and recursive method invocation.
4531 This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId"
4532 messages seen on some systems. Recursive method invocation depth is
4533 currently limited to 255. (Alexey Starikovskiy)
4535 Completely eliminated all vestiges of support for the "module-level
4536 executable code" until this support is fully implemented and debugged. This
4537 should eliminate the NO_RETURN_VALUE exceptions seen during table load on
4538 some systems that invoke this support.
4540 Fixed a problem within the resource manager code where the transaction flags
4541 for a 64-bit address descriptor were handled incorrectly in the type-
4544 Consolidated duplicate code within the address descriptor resource manager
4545 code, reducing overall subsystem code size.
4547 Fixed a fault when using the AML debugger "disassemble" command to
4548 disassemble individual control methods.
4550 Removed references to the "release_current" directory within the Unix
4553 Code and Data Size: The current and previous core subsystem library sizes
4554 are shown below. These are the code and data sizes for the acpica.lib
4555 produced by the Microsoft Visual C++ 6.0 compiler. These values do not
4556 include any ACPI driver or OSPM code. The debug version of the code includes
4557 the debug output trace mechanism and has a much larger code and data size.
4558 Note that these values will vary depending on the efficiency of the compiler
4559 and the compiler options used during generation.
4562 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
4563 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
4565 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
4566 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
4569 2) iASL Compiler/Disassembler:
4571 Implemented an error check for illegal duplicate values in the interrupt and
4572 dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and
4575 Implemented error checking for the Irq() and IrqNoFlags() macros to detect
4576 too many values in the interrupt list (16 max) and invalid values in the
4579 The maximum length string literal within an ASL file is now restricted to
4580 200 characters as per the ACPI specification.
4582 Fixed a fault when using the -ln option (generate namespace listing).
4584 Implemented an error check to determine if a DescriptorName within a
4585 resource descriptor has already been used within the current scope.
4587 ----------------------------------------
4588 15 August 2005. Summary of changes for version 20050815:
4590 1) ACPI CA Core Subsystem:
4592 Implemented a full bytewise compare to determine if a table load request is
4593 attempting to load a duplicate table. The compare is performed if the table
4594 signatures and table lengths match. This will allow different tables with
4595 the same OEM Table ID and revision to be loaded - probably against the ACPI
4596 specification, but discovered in the field nonetheless.
4598 Added the changes.txt logfile to each of the zipped release packages.
4600 Code and Data Size: Current and previous core subsystem library sizes are
4601 shown below. These are the code and data sizes for the acpica.lib produced
4602 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
4603 any ACPI driver or OSPM code. The debug version of the code includes the
4604 debug output trace mechanism and has a much larger code and data size. Note
4605 that these values will vary depending on the efficiency of the compiler and
4606 the compiler options used during generation.
4609 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
4610 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
4612 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
4613 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
4616 2) iASL Compiler/Disassembler:
4618 Fixed a problem where incorrect AML code could be generated for Package
4619 objects if optimization is disabled (via the -oa switch).
4621 Fixed a problem with where incorrect AML code is generated for variable-
4622 length packages when the package length is not specified and the number of
4623 initializer values is greater than 255.
4626 ----------------------------------------
4627 29 July 2005. Summary of changes for version 20050729:
4629 1) ACPI CA Core Subsystem:
4631 Implemented support to ignore an attempt to install/load a particular ACPI
4632 table more than once. Apparently there exists BIOS code that repeatedly
4633 attempts to load the same SSDT upon certain events. With assistance from
4634 Venkatesh Pallipadi.
4636 Restructured the main interface to the AML parser in order to correctly
4637 handle all exceptional conditions. This will prevent leakage of the OwnerId
4638 resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on some
4639 machines. With assistance from Alexey Starikovskiy.
4641 Support for "module level code" has been disabled in this version due to a
4642 number of issues that have appeared on various machines. The support can be
4643 enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem
4644 compilation. When the issues are fully resolved, the code will be enabled by
4647 Modified the internal functions for debug print support to define the
4648 FunctionName parameter as a (const char *) for compatibility with compiler
4649 built-in macros such as __FUNCTION__, etc.
4651 Linted the entire ACPICA source tree for both 32-bit and 64-bit.
4653 Implemented support to display an object count summary for the AML Debugger
4654 commands Object and Methods.
4656 Code and Data Size: Current and previous core subsystem library sizes are
4657 shown below. These are the code and data sizes for the acpica.lib produced
4658 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
4659 any ACPI driver or OSPM code. The debug version of the code includes the
4660 debug output trace mechanism and has a much larger code and data size. Note
4661 that these values will vary depending on the efficiency of the compiler and
4662 the compiler options used during generation.
4665 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
4666 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
4668 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
4669 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
4672 2) iASL Compiler/Disassembler:
4674 Fixed a regression that appeared in the 20050708 version of the compiler
4675 where an error message was inadvertently emitted for invocations of the _OSI
4676 reserved control method.
4678 ----------------------------------------
4679 08 July 2005. Summary of changes for version 20050708:
4681 1) ACPI CA Core Subsystem:
4683 The use of the CPU stack in the debug version of the subsystem has been
4684 considerably reduced. Previously, a debug structure was declared in every
4685 function that used the debug macros. This structure has been removed in
4686 favor of declaring the individual elements as parameters to the debug
4687 functions. This reduces the cumulative stack use during nested execution of
4688 ACPI function calls at the cost of a small increase in the code size of the
4689 debug version of the subsystem. With assistance from Alexey Starikovskiy and
4692 Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent
4693 headers to define a macro that will return the current function name at
4694 runtime (such as __FUNCTION__ or _func_, etc.) The function name is used by
4695 the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the
4696 compiler-dependent header, the function name is saved on the CPU stack (one
4697 pointer per function.) This mechanism is used because apparently there
4698 exists no standard ANSI-C defined macro that that returns the function name.
4700 Redesigned and reimplemented the "Owner ID" mechanism used to track
4701 namespace objects created/deleted by ACPI tables and control method
4702 execution. A bitmap is now used to allocate and free the IDs, thus solving
4703 the wraparound problem present in the previous implementation. The size of
4704 the namespace node descriptor was reduced by 2 bytes as a result (Alexey
4707 Removed the UINT32_BIT and UINT16_BIT types that were used for the bitfield
4708 flag definitions within the headers for the predefined ACPI tables. These
4709 have been replaced by UINT8_BIT in order to increase the code portability of
4710 the subsystem. If the use of UINT8 remains a problem, we may be forced to
4711 eliminate bitfields entirely because of a lack of portability.
4713 Enhanced the performance of the AcpiUtUpdateObjectReference procedure. This
4714 is a frequently used function and this improvement increases the performance
4715 of the entire subsystem (Alexey Starikovskiy).
4717 Fixed several possible memory leaks and the inverse - premature object
4718 deletion (Alexey Starikovskiy).
4720 Code and Data Size: Current and previous core subsystem library sizes are
4721 shown below. These are the code and data sizes for the acpica.lib produced
4722 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
4723 any ACPI driver or OSPM code. The debug version of the code includes the
4724 debug output trace mechanism and has a much larger code and data size. Note
4725 that these values will vary depending on the efficiency of the compiler and
4726 the compiler options used during generation.
4729 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
4730 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
4732 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
4733 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
4735 ----------------------------------------
4736 24 June 2005. Summary of changes for version 20050624:
4738 1) ACPI CA Core Subsystem:
4740 Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for
4741 the host-defined cache object. This allows the OSL implementation to define
4742 and type this object in any manner desired, simplifying the OSL
4743 implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for
4744 Linux, and should be defined in the OS-specific header file for other
4745 operating systems as required.
4747 Changed the interface to AcpiOsAcquireObject to directly return the
4748 requested object as the function return (instead of ACPI_STATUS.) This
4749 change was made for performance reasons, since this is the purpose of the
4750 interface in the first place. AcpiOsAcquireObject is now similar to the
4751 AcpiOsAllocate interface.
4753 Implemented a new AML debugger command named Businfo. This command displays
4754 information about all devices that have an associate _PRT object. The _ADR,
4755 _HID, _UID, and _CID are displayed for these devices.
4757 Modified the initialization sequence in AcpiInitializeSubsystem to call the
4758 OSL interface AcpiOslInitialize first, before any local initialization. This
4759 change was required because the global initialization now calls OSL
4762 Enhanced the Dump command to display the entire contents of Package objects
4763 (including all sub-objects and their values.)
4765 Restructured the code base to split some files because of size and/or
4766 because the code logically belonged in a separate file. New files are listed
4767 below. All makefiles and project files included in the ACPI CA release have
4769 utilities/utcache.c /* Local cache interfaces */
4770 utilities/utmutex.c /* Local mutex support */
4771 utilities/utstate.c /* State object support */
4772 interpreter/parser/psloop.c /* Main AML parse loop */
4774 Code and Data Size: Current and previous core subsystem library sizes are
4775 shown below. These are the code and data sizes for the acpica.lib produced
4776 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
4777 any ACPI driver or OSPM code. The debug version of the code includes the
4778 debug output trace mechanism and has a much larger code and data size. Note
4779 that these values will vary depending on the efficiency of the compiler and
4780 the compiler options used during generation.
4783 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
4784 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
4786 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
4787 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
4790 2) iASL Compiler/Disassembler:
4792 Fixed a regression introduced in version 20050513 where the use of a Package
4793 object within a Case() statement caused a compile time exception. The
4794 original behavior has been restored (a Match() operator is emitted.)
4796 ----------------------------------------
4797 17 June 2005. Summary of changes for version 20050617:
4799 1) ACPI CA Core Subsystem:
4801 Moved the object cache operations into the OS interface layer (OSL) to allow
4802 the host OS to handle these operations if desired (for example, the Linux
4803 OSL will invoke the slab allocator). This support is optional; the compile
4804 time define ACPI_USE_LOCAL_CACHE may be used to utilize the original cache
4805 code in the ACPI CA core. The new OSL interfaces are shown below. See
4806 utalloc.c for an example implementation, and acpiosxf.h for the exact
4807 interface definitions. With assistance from Alexey Starikovskiy.
4814 Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to return
4815 and restore a flags parameter. This fits better with many OS lock models.
4816 Note: the current execution state (interrupt handler or not) is no longer
4817 passed to these interfaces. If necessary, the OSL must determine this state
4818 by itself, a simple and fast operation. With assistance from Alexey
4821 Fixed a problem in the ACPI table handling where a valid XSDT was assumed
4822 present if the revision of the RSDP was 2 or greater. According to the ACPI
4823 specification, the XSDT is optional in all cases, and the table manager
4824 therefore now checks for both an RSDP >=2 and a valid XSDT pointer.
4825 Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs contain
4828 Fixed an interpreter problem with the Mid() operator in the case of an input
4829 string where the resulting output string is of zero length. It now correctly
4830 returns a valid, null terminated string object instead of a string object
4831 with a null pointer.
4833 Fixed a problem with the control method argument handling to allow a store
4834 to an Arg object that already contains an object of type Device. The Device
4835 object is now correctly overwritten. Previously, an error was returned.
4838 Enhanced the debugger Find command to emit object values in addition to the
4839 found object pathnames. The output format is the same as the dump namespace
4842 Enhanced the debugger Set command. It now has the ability to set the value
4843 of any Named integer object in the namespace (Previously, only method locals
4844 and args could be set.)
4846 Code and Data Size: Current and previous core subsystem library sizes are
4847 shown below. These are the code and data sizes for the acpica.lib produced
4848 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
4849 any ACPI driver or OSPM code. The debug version of the code includes the
4850 debug output trace mechanism and has a much larger code and data size. Note
4851 that these values will vary depending on the efficiency of the compiler and
4852 the compiler options used during generation.
4855 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
4856 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
4858 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
4859 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
4862 2) iASL Compiler/Disassembler:
4864 Fixed a regression in the disassembler where if/else/while constructs were
4865 output incorrectly. This problem was introduced in the previous release
4866 (20050526). This problem also affected the single-step disassembly in the
4869 Fixed a problem where compiling the reserved _OSI method would randomly (but
4870 rarely) produce compile errors.
4872 Enhanced the disassembler to emit compilable code in the face of incorrect
4873 AML resource descriptors. If the optional ResourceSourceIndex is present,
4874 but the ResourceSource is not, do not emit the ResourceSourceIndex in the
4875 disassembly. Otherwise, the resulting code cannot be compiled without
4878 ----------------------------------------
4879 26 May 2005. Summary of changes for version 20050526:
4881 1) ACPI CA Core Subsystem:
4883 Implemented support to execute Type 1 and Type 2 AML opcodes appearing at
4884 the module level (not within a control method.) These opcodes are executed
4885 exactly once at the time the table is loaded. This type of code was legal up
4886 until the release of ACPI 2.0B (2002) and is now supported within ACPI CA in
4887 order to provide backwards compatibility with earlier BIOS implementations.
4888 This eliminates the "Encountered executable code at module level" warning
4889 that was previously generated upon detection of such code.
4891 Fixed a problem in the interpreter where an AE_NOT_FOUND exception could
4892 inadvertently be generated during the lookup of namespace objects in the
4893 second pass parse of ACPI tables and control methods. It appears that this
4894 problem could occur during the resolution of forward references to namespace
4897 Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function,
4898 corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This
4899 allows the deadlock detection debug code to be compiled out in the normal
4900 case, improving mutex performance (and overall subsystem performance)
4903 Implemented a handful of miscellaneous fixes for possible memory leaks on
4904 error conditions and error handling control paths. These fixes were
4905 suggested by FreeBSD and the Coverity Prevent source code analysis tool.
4907 Added a check for a null RSDT pointer in AcpiGetFirmwareTable (tbxfroot.c)
4908 to prevent a fault in this error case.
4910 Code and Data Size: Current and previous core subsystem library sizes are
4911 shown below. These are the code and data sizes for the acpica.lib produced
4912 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
4913 any ACPI driver or OSPM code. The debug version of the code includes the
4914 debug output trace mechanism and has a much larger code and data size. Note
4915 that these values will vary depending on the efficiency of the compiler and
4916 the compiler options used during generation.
4919 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
4920 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
4922 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
4923 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
4926 2) iASL Compiler/Disassembler:
4928 Implemented support to allow Type 1 and Type 2 ASL operators to appear at
4929 the module level (not within a control method.) These operators will be
4930 executed once at the time the table is loaded. This type of code was legal
4931 up until the release of ACPI 2.0B (2002) and is now supported by the iASL
4932 compiler in order to provide backwards compatibility with earlier BIOS ASL
4935 The ACPI integer width (specified via the table revision ID or the -r
4936 override, 32 or 64 bits) is now used internally during compile-time constant
4937 folding to ensure that constants are truncated to 32 bits if necessary.
4938 Previously, the revision ID value was only emitted in the AML table header.
4940 An error message is now generated for the Mutex and Method operators if the
4941 SyncLevel parameter is outside the legal range of 0 through 15.
4943 Fixed a problem with the Method operator ParameterTypes list handling (ACPI
4944 3.0). Previously, more than 2 types or 2 arguments generated a syntax error.
4945 The actual underlying implementation of method argument typechecking is
4946 still under development, however.
4948 ----------------------------------------
4949 13 May 2005. Summary of changes for version 20050513:
4951 1) ACPI CA Core Subsystem:
4953 Implemented support for PCI Express root bridges -- added support for device
4954 PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup.
4956 The interpreter now automatically truncates incoming 64-bit constants to 32
4957 bits if currently executing out of a 32-bit ACPI table (Revision < 2). This
4958 also affects the iASL compiler constant folding. (Note: as per below, the
4959 iASL compiler no longer allows 64-bit constants within 32-bit tables.)
4961 Fixed a problem where string and buffer objects with "static" pointers
4962 (pointers to initialization data within an ACPI table) were not handled
4963 consistently. The internal object copy operation now always copies the data
4964 to a newly allocated buffer, regardless of whether the source object is
4967 Fixed a problem with the FromBCD operator where an implicit result
4968 conversion was improperly performed while storing the result to the target
4969 operand. Since this is an "explicit conversion" operator, the implicit
4970 conversion should never be performed on the output.
4972 Fixed a problem with the CopyObject operator where a copy to an existing
4973 named object did not always completely overwrite the existing object stored
4974 at name. Specifically, a buffer-to-buffer copy did not delete the existing
4977 Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces and
4978 structs for consistency.
4980 Code and Data Size: Current and previous core subsystem library sizes are
4981 shown below. These are the code and data sizes for the acpica.lib produced
4982 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
4983 any ACPI driver or OSPM code. The debug version of the code includes the
4984 debug output trace mechanism and has a much larger code and data size. Note
4985 that these values will vary depending on the efficiency of the compiler and
4986 the compiler options used during generation.
4989 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
4990 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
4991 Current Release: (Same sizes)
4992 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
4993 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
4996 2) iASL Compiler/Disassembler:
4998 The compiler now emits a warning if an attempt is made to generate a 64-bit
4999 integer constant from within a 32-bit ACPI table (Revision < 2). The integer
5000 is truncated to 32 bits.
5002 Fixed a problem with large package objects: if the static length of the
5003 package is greater than 255, the "variable length package" opcode is
5004 emitted. Previously, this caused an error. This requires an update to the
5005 ACPI spec, since it currently (incorrectly) states that packages larger than
5006 255 elements are not allowed.
5008 The disassembler now correctly handles variable length packages and packages
5009 larger than 255 elements.
5011 ----------------------------------------
5012 08 April 2005. Summary of changes for version 20050408:
5014 1) ACPI CA Core Subsystem:
5016 Fixed three cases in the interpreter where an "index" argument to an ASL
5017 function was still (internally) 32 bits instead of the required 64 bits.
5018 This was the Index argument to the Index, Mid, and Match operators.
5020 The "strupr" function is now permanently local (AcpiUtStrupr), since this is
5021 not a POSIX-defined function and not present in most kernel-level C
5022 libraries. All references to the C library strupr function have been removed
5025 Completed the deployment of static functions/prototypes. All prototypes with
5026 the static attribute have been moved from the headers to the owning C file.
5028 Implemented an extract option (-e) for the AcpiBin utility (AML binary
5029 utility). This option allows the utility to extract individual ACPI tables
5030 from the output of AcpiDmp. It provides the same functionality of the
5031 acpixtract.pl perl script without the worry of setting the correct perl
5032 options. AcpiBin runs on Windows and has not yet been generated/validated in
5033 the Linux/Unix environment (but should be soon).
5035 Updated and fixed the table dump option for AcpiBin (-d). This option
5036 converts a single ACPI table to a hex/ascii file, similar to the output of
5039 Code and Data Size: Current and previous core subsystem library sizes are
5040 shown below. These are the code and data sizes for the acpica.lib produced
5041 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5042 any ACPI driver or OSPM code. The debug version of the code includes the
5043 debug output trace mechanism and has a much larger code and data size. Note
5044 that these values will vary depending on the efficiency of the compiler and
5045 the compiler options used during generation.
5048 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
5049 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
5051 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
5052 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
5055 2) iASL Compiler/Disassembler:
5057 Disassembler fix: Added a check to ensure that the table length found in the
5058 ACPI table header within the input file is not longer than the actual input
5059 file size. This indicates some kind of file or table corruption.
5061 ----------------------------------------
5062 29 March 2005. Summary of changes for version 20050329:
5064 1) ACPI CA Core Subsystem:
5066 An error is now generated if an attempt is made to create a Buffer Field of
5067 length zero (A CreateField with a length operand of zero.)
5069 The interpreter now issues a warning whenever executable code at the module
5070 level is detected during ACPI table load. This will give some idea of the
5071 prevalence of this type of code.
5073 Implemented support for references to named objects (other than control
5074 methods) within package objects.
5076 Enhanced package object output for the debug object. Package objects are now
5077 completely dumped, showing all elements.
5079 Enhanced miscellaneous object output for the debug object. Any object can
5080 now be written to the debug object (for example, a device object can be
5081 written, and the type of the object will be displayed.)
5083 The "static" qualifier has been added to all local functions across both the
5084 core subsystem and the iASL compiler.
5086 The number of "long" lines (> 80 chars) within the source has been
5087 significantly reduced, by about 1/3.
5089 Cleaned up all header files to ensure that all CA/iASL functions are
5090 prototyped (even static functions) and the formatting is consistent.
5092 Two new header files have been added, acopcode.h and acnames.h.
5094 Removed several obsolete functions that were no longer used.
5096 Code and Data Size: Current and previous core subsystem library sizes are
5097 shown below. These are the code and data sizes for the acpica.lib produced
5098 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5099 any ACPI driver or OSPM code. The debug version of the code includes the
5100 debug output trace mechanism and has a much larger code and data size. Note
5101 that these values will vary depending on the efficiency of the compiler and
5102 the compiler options used during generation.
5105 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
5106 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
5108 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
5109 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
5113 2) iASL Compiler/Disassembler:
5115 Fixed a problem with the resource descriptor generation/support. For the
5116 ResourceSourceIndex and the ResourceSource fields, both must be present, or
5117 both must be not present - can't have one without the other.
5119 The compiler now returns non-zero from the main procedure if any errors have
5120 occurred during the compilation.
5123 ----------------------------------------
5124 09 March 2005. Summary of changes for version 20050309:
5126 1) ACPI CA Core Subsystem:
5128 The string-to-buffer implicit conversion code has been modified again after
5129 a change to the ACPI specification. In order to match the behavior of the
5130 other major ACPI implementation, the target buffer is no longer truncated if
5131 the source string is smaller than an existing target buffer. This change
5132 requires an update to the ACPI spec, and should eliminate the recent
5133 AE_AML_BUFFER_LIMIT issues.
5135 The "implicit return" support was rewritten to a new algorithm that solves
5136 the general case. Rather than attempt to determine when a method is about to
5137 exit, the result of every ASL operator is saved momentarily until the very
5138 next ASL operator is executed. Therefore, no matter how the method exits,
5139 there will always be a saved implicit return value. This feature is only
5140 enabled with the AcpiGbl_EnableInterpreterSlack flag, and should eliminate
5141 AE_AML_NO_RETURN_VALUE errors when enabled.
5143 Implemented implicit conversion support for the predicate (operand) of the
5144 If, Else, and While operators. String and Buffer arguments are automatically
5145 converted to Integers.
5147 Changed the string-to-integer conversion behavior to match the new ACPI
5148 errata: "If no integer object exists, a new integer is created. The ASCII
5149 string is interpreted as a hexadecimal constant. Each string character is
5150 interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting
5151 with the first character as the most significant digit, and ending with the
5152 first non-hexadecimal character or end-of-string." This means that the first
5153 non-hex character terminates the conversion and this is the code that was
5156 Fixed a problem where the ObjectType operator would fail (fault) when used
5157 on an Index of a Package which pointed to a null package element. The
5158 operator now properly returns zero (Uninitialized) in this case.
5160 Fixed a problem where the While operator used excessive memory by not
5161 properly popping the result stack during execution. There was no memory leak
5162 after execution, however. (Code provided by Valery Podrezov.)
5164 Fixed a problem where references to control methods within Package objects
5165 caused the method to be invoked, instead of producing a reference object
5166 pointing to the method.
5168 Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) to
5169 improve performance and reduce code size. (Code provided by Alexey
5172 Code and Data Size: Current and previous core subsystem library sizes are
5173 shown below. These are the code and data sizes for the acpica.lib produced
5174 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5175 any ACPI driver or OSPM code. The debug version of the code includes the
5176 debug output trace mechanism and has a much larger code and data size. Note
5177 that these values will vary depending on the efficiency of the compiler and
5178 the compiler options used during generation.
5181 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
5182 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
5184 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
5185 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
5188 2) iASL Compiler/Disassembler:
5190 Fixed a problem with the Return operator with no arguments. Since the AML
5191 grammar for the byte encoding requires an operand for the Return opcode, the
5192 compiler now emits a Return(Zero) for this case. An ACPI specification
5193 update has been written for this case.
5195 For tables other than the DSDT, namepath optimization is automatically
5196 disabled. This is because SSDTs can be loaded anywhere in the namespace, the
5197 compiler has no knowledge of where, and thus cannot optimize namepaths.
5199 Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was
5200 inadvertently omitted from the ACPI specification, and will require an
5203 The source file scan for ASCII characters is now optional (-a). This change
5204 was made because some vendors place non-ascii characters within comments.
5205 However, the scan is simply a brute-force byte compare to ensure all
5206 characters in the file are in the range 0x00 to 0x7F.
5208 Fixed a problem with the CondRefOf operator where the compiler was
5209 inappropriately checking for the existence of the target. Since the point of
5210 the operator is to check for the existence of the target at run-time, the
5211 compiler no longer checks for the target existence.
5213 Fixed a problem where errors generated from the internal AML interpreter
5214 during constant folding were not handled properly, causing a fault.
5216 Fixed a problem with overly aggressive range checking for the Stall
5217 operator. The valid range (max 255) is now only checked if the operand is of
5218 type Integer. All other operand types cannot be statically checked.
5220 Fixed a problem where control method references within the RefOf, DeRefOf,
5221 and ObjectType operators were not treated properly. They are now treated as
5222 actual references, not method invocations.
5224 Fixed and enhanced the "list namespace" option (-ln). This option was broken
5225 a number of releases ago.
5227 Improved error handling for the Field, IndexField, and BankField operators.
5228 The compiler now cleanly reports and recovers from errors in the field
5229 component (FieldUnit) list.
5231 Fixed a disassembler problem where the optional ResourceDescriptor fields
5232 TRS and TTP were not always handled correctly.
5234 Disassembler - Comments in output now use "//" instead of "/*"
5236 ----------------------------------------
5237 28 February 2005. Summary of changes for version 20050228:
5239 1) ACPI CA Core Subsystem:
5241 Fixed a problem where the result of an Index() operator (an object
5242 reference) must increment the reference count on the target object for the
5243 life of the object reference.
5245 Implemented AML Interpreter and Debugger support for the new ACPI 3.0
5246 Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and WordSpace
5247 resource descriptors.
5249 Implemented support in the _OSI method for the ACPI 3.0 "Extended Address
5250 Space Descriptor" string, indicating interpreter support for the descriptors
5253 Implemented header support for the new ACPI 3.0 FADT flag bits.
5255 Implemented header support for the new ACPI 3.0 PCI Express bits for the PM1
5256 status/enable registers.
5258 Updated header support for the MADT processor local Apic struct and MADT
5259 platform interrupt source struct for new ACPI 3.0 fields.
5261 Implemented header support for the SRAT and SLIT ACPI tables.
5263 Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" flag
5266 Code and Data Size: Current and previous core subsystem library sizes are
5267 shown below. These are the code and data sizes for the acpica.lib produced
5268 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5269 any ACPI driver or OSPM code. The debug version of the code includes the
5270 debug output trace mechanism and has a much larger code and data size. Note
5271 that these values will vary depending on the efficiency of the compiler and
5272 the compiler options used during generation.
5275 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
5276 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
5278 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
5279 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
5282 2) iASL Compiler/Disassembler:
5284 Fixed a problem with the internal 64-bit String-to-integer conversion with
5285 strings less than two characters long.
5287 Fixed a problem with constant folding where the result of the Index()
5288 operator can not be considered a constant. This means that Index() cannot be
5289 a type3 opcode and this will require an update to the ACPI specification.
5291 Disassembler: Implemented support for the TTP, MTP, and TRS resource
5292 descriptor fields. These fields were inadvertently ignored and not output in
5293 the disassembly of the resource descriptor.
5296 ----------------------------------------
5297 11 February 2005. Summary of changes for version 20050211:
5299 1) ACPI CA Core Subsystem:
5301 Implemented ACPI 3.0 support for implicit conversion within the Match()
5302 operator. MatchObjects can now be of type integer, buffer, or string instead
5303 of just type integer. Package elements are implicitly converted to the type
5304 of the MatchObject. This change aligns the behavior of Match() with the
5305 behavior of the other logical operators (LLess(), etc.) It also requires an
5306 errata change to the ACPI specification as this support was intended for
5307 ACPI 3.0, but was inadvertently omitted.
5309 Fixed a problem with the internal implicit "to buffer" conversion. Strings
5310 that are converted to buffers will cause buffer truncation if the string is
5311 smaller than the target buffer. Integers that are converted to buffers will
5312 not cause buffer truncation, only zero extension (both as per the ACPI
5313 spec.) The problem was introduced when code was added to truncate the
5314 buffer, but this should not be performed in all cases, only the string case.
5316 Fixed a problem with the Buffer and Package operators where the interpreter
5317 would get confused if two such operators were used as operands to an ASL
5318 operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result
5319 stack was not being popped after the execution of these operators, resulting
5320 in an AE_NO_RETURN_VALUE exception.
5322 Fixed a problem with constructs of the form Store(Index(...),...). The
5323 reference object returned from Index was inadvertently resolved to an actual
5324 value. This problem was introduced in version 20050114 when the behavior of
5325 Store() was modified to restrict the object types that can be used as the
5326 source operand (to match the ACPI specification.)
5328 Reduced excessive stack use within the AcpiGetObjectInfo procedure.
5330 Added a fix to aclinux.h to allow generation of AcpiExec on Linux.
5332 Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct.
5334 Code and Data Size: Current and previous core subsystem library sizes are
5335 shown below. These are the code and data sizes for the acpica.lib produced
5336 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5337 any ACPI driver or OSPM code. The debug version of the code includes the
5338 debug output trace mechanism and has a much larger code and data size. Note
5339 that these values will vary depending on the efficiency of the compiler and
5340 the compiler options used during generation.
5343 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
5344 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
5346 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
5347 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
5350 2) iASL Compiler/Disassembler:
5352 Fixed a code generation problem in the constant folding optimization code
5353 where incorrect code was generated if a constant was reduced to a buffer
5354 object (i.e., a reduced type 5 opcode.)
5356 Fixed a typechecking problem for the ToBuffer operator. Caused by an
5357 incorrect return type in the internal opcode information table.
5359 ----------------------------------------
5360 25 January 2005. Summary of changes for version 20050125:
5362 1) ACPI CA Core Subsystem:
5364 Fixed a recently introduced problem with the Global Lock where the
5365 underlying semaphore was not created. This problem was introduced in
5366 version 20050114, and caused an AE_AML_NO_OPERAND exception during an
5367 Acquire() operation on _GL.
5369 The local object cache is now optional, and is disabled by default. Both
5370 AcpiExec and the iASL compiler enable the cache because they run in user
5371 mode and this enhances their performance. #define ACPI_ENABLE_OBJECT_CACHE
5372 to enable the local cache.
5374 Fixed an issue in the internal function AcpiUtEvaluateObject concerning the
5375 optional "implicit return" support where an error was returned if no return
5376 object was expected, but one was implicitly returned. AE_OK is now returned
5377 in this case and the implicitly returned object is deleted.
5378 AcpiUtEvaluateObject is only occasionally used, and only to execute reserved
5379 methods such as _STA and _INI where the return type is known up front.
5381 Fixed a few issues with the internal convert-to-integer code. It now returns
5382 an error if an attempt is made to convert a null string, a string of only
5383 blanks/tabs, or a zero-length buffer. This affects both implicit conversion
5384 and explicit conversion via the ToInteger() operator.
5386 The internal debug code in AcpiUtAcquireMutex has been commented out. It is
5387 not needed for normal operation and should increase the performance of the
5388 entire subsystem. The code remains in case it is needed for debug purposes
5391 The AcpiExec source and makefile are included in the Unix/Linux package for
5394 Code and Data Size: Current and previous core subsystem library sizes are
5395 shown below. These are the code and data sizes for the acpica.lib produced
5396 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5397 any ACPI driver or OSPM code. The debug version of the code includes the
5398 debug output trace mechanism and has a much larger code and data size. Note
5399 that these values will vary depending on the efficiency of the compiler and
5400 the compiler options used during generation.
5403 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
5404 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
5406 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
5407 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
5409 2) iASL Compiler/Disassembler:
5411 Switch/Case support: A warning is now issued if the type of the Switch value
5412 cannot be determined at compile time. For example, Switch(Arg0) will
5413 generate the warning, and the type is assumed to be an integer. As per the
5414 ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate the
5417 Switch/Case support: Implemented support for buffer and string objects as
5418 the switch value. This is an ACPI 3.0 feature, now that LEqual supports
5419 buffers and strings.
5421 Switch/Case support: The emitted code for the LEqual() comparisons now uses
5422 the switch value as the first operand, not the second. The case value is now
5423 the second operand, and this allows the case value to be implicitly
5424 converted to the type of the switch value, not the other way around.
5426 Switch/Case support: Temporary variables are now emitted immediately within
5427 the control method, not at the global level. This means that there are now
5428 36 temps available per-method, not 36 temps per-module as was the case with
5429 the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.)
5431 ----------------------------------------
5432 14 January 2005. Summary of changes for version 20050114:
5434 Added 2005 copyright to all module headers. This affects every module in
5435 the core subsystem, iASL compiler, and the utilities.
5437 1) ACPI CA Core Subsystem:
5439 Fixed an issue with the String-to-Buffer conversion code where the string
5440 null terminator was not included in the buffer after conversion, but there
5441 is existing ASL that assumes the string null terminator is included. This is
5442 the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was
5443 introduced in the previous version when the code was updated to correctly
5444 set the converted buffer size as per the ACPI specification. The ACPI spec
5445 is ambiguous and will be updated to specify that the null terminator must be
5446 included in the converted buffer. This also affects the ToBuffer() ASL
5449 Fixed a problem with the Mid() ASL/AML operator where it did not work
5450 correctly on Buffer objects. Newly created sub-buffers were not being marked
5454 Fixed a problem in AcpiTbFindTable where incorrect string compares were
5455 performed on the OemId and OemTableId table header fields. These fields are
5456 not null terminated, so strncmp is now used instead of strcmp.
5458 Implemented a restriction on the Store() ASL/AML operator to align the
5459 behavior with the ACPI specification. Previously, any object could be used
5460 as the source operand. Now, the only objects that may be used are Integers,
5461 Buffers, Strings, Packages, Object References, and DDB Handles. If
5462 necessary, the original behavior can be restored by enabling the
5463 EnableInterpreterSlack flag.
5465 Enhanced the optional "implicit return" support to allow an implicit return
5466 value from methods that are invoked externally via the AcpiEvaluateObject
5467 interface. This enables implicit returns from the _STA and _INI methods,
5470 Changed the Revision() ASL/AML operator to return the current version of the
5471 AML interpreter, in the YYYYMMDD format. Previously, it incorrectly returned
5472 the supported ACPI version (This is the function of the _REV method).
5474 Updated the _REV predefined method to return the currently supported version
5477 Implemented batch mode option for the AcpiExec utility (-b).
5479 Code and Data Size: Current and previous core subsystem library sizes are
5480 shown below. These are the code and data sizes for the acpica.lib produced
5481 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5482 any ACPI driver or OSPM code. The debug version of the code includes the
5483 debug output trace mechanism and has a much larger code and data size. Note
5484 that these values will vary depending on the efficiency of the compiler and
5485 the compiler options used during generation.
5488 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
5489 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
5491 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
5492 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
5494 ----------------------------------------
5495 10 December 2004. Summary of changes for version 20041210:
5497 ACPI 3.0 support is nearing completion in both the iASL compiler and the
5498 ACPI CA core subsystem.
5500 1) ACPI CA Core Subsystem:
5502 Fixed a problem in the ToDecimalString operator where the resulting string
5503 length was incorrectly calculated. The length is now calculated exactly,
5504 eliminating incorrect AE_STRING_LIMIT exceptions.
5506 Fixed a problem in the ToHexString operator to allow a maximum 200 character
5507 string to be produced.
5509 Fixed a problem in the internal string-to-buffer and buffer-to-buffer copy
5510 routine where the length of the resulting buffer was not truncated to the
5511 new size (if the target buffer already existed).
5513 Code and Data Size: Current and previous core subsystem library sizes are
5514 shown below. These are the code and data sizes for the acpica.lib produced
5515 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5516 any ACPI driver or OSPM code. The debug version of the code includes the
5517 debug output trace mechanism and has a much larger code and data size. Note
5518 that these values will vary depending on the efficiency of the compiler and
5519 the compiler options used during generation.
5522 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
5523 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
5525 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
5526 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
5529 2) iASL Compiler/Disassembler:
5531 Implemented the new ACPI 3.0 resource template macros - DWordSpace,
5532 ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace.
5533 Includes support in the disassembler.
5535 Implemented support for the new (ACPI 3.0) parameter to the Register macro,
5538 Fixed a problem where the _HE resource name for the Interrupt macro was
5539 referencing bit 0 instead of bit 1.
5541 Implemented check for maximum 255 interrupts in the Interrupt macro.
5543 Fixed a problem with the predefined resource descriptor names where
5544 incorrect AML code was generated if the offset within the resource buffer
5545 was 0 or 1. The optimizer shortened the AML code to a single byte opcode
5546 but did not update the surrounding package lengths.
5548 Changes to the Dma macro: All channels within the channel list must be in
5549 the range 0-7. Maximum 8 channels can be specified. BusMaster operand is
5550 optional (default is BusMaster).
5552 Implemented check for maximum 7 data bytes for the VendorShort macro.
5554 The ReadWrite parameter is now optional for the Memory32 and similar macros.
5556 ----------------------------------------
5557 03 December 2004. Summary of changes for version 20041203:
5559 1) ACPI CA Core Subsystem:
5561 The low-level field insertion/extraction code (exfldio) has been completely
5562 rewritten to eliminate unnecessary complexity, bugs, and boundary
5565 Fixed a problem in the ToInteger, ToBuffer, ToHexString, and ToDecimalString
5566 operators where the input operand could be inadvertently deleted if no
5567 conversion was necessary (e.g., if the input to ToInteger was an Integer
5570 Fixed a problem with the ToDecimalString and ToHexString where an incorrect
5571 exception code was returned if the resulting string would be > 200 chars.
5572 AE_STRING_LIMIT is now returned.
5574 Fixed a problem with the Concatenate operator where AE_OK was always
5575 returned, even if the operation failed.
5577 Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128
5578 semaphores to be allocated.
5580 Code and Data Size: Current and previous core subsystem library sizes are
5581 shown below. These are the code and data sizes for the acpica.lib produced
5582 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5583 any ACPI driver or OSPM code. The debug version of the code includes the
5584 debug output trace mechanism and has a much larger code and data size. Note
5585 that these values will vary depending on the efficiency of the compiler and
5586 the compiler options used during generation.
5589 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
5590 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
5592 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
5593 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
5596 2) iASL Compiler/Disassembler:
5598 Fixed typechecking for the ObjectType and SizeOf operators. Problem was
5599 recently introduced in 20041119.
5601 Fixed a problem with the ToUUID macro where the upper nybble of each buffer
5602 byte was inadvertently set to zero.
5604 ----------------------------------------
5605 19 November 2004. Summary of changes for version 20041119:
5607 1) ACPI CA Core Subsystem:
5609 Fixed a problem in the internal ConvertToInteger routine where new integers
5610 were not truncated to 32 bits for 32-bit ACPI tables. This routine converts
5611 buffers and strings to integers.
5613 Implemented support to store a value to an Index() on a String object. This
5614 is an ACPI 2.0 feature that had not yet been implemented.
5616 Implemented new behavior for storing objects to individual package elements
5617 (via the Index() operator). The previous behavior was to invoke the implicit
5618 conversion rules if an object was already present at the index. The new
5619 behavior is to simply delete any existing object and directly store the new
5620 object. Although the ACPI specification seems unclear on this subject, other
5621 ACPI implementations behave in this manner. (This is the root of the
5622 AE_BAD_HEX_CONSTANT issue.)
5624 Modified the RSDP memory scan mechanism to support the extended checksum for
5625 ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid
5626 RSDP signature is found with a valid checksum.
5628 Code and Data Size: Current and previous core subsystem library sizes are
5629 shown below. These are the code and data sizes for the acpica.lib produced
5630 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5631 any ACPI driver or OSPM code. The debug version of the code includes the
5632 debug output trace mechanism and has a much larger code and data size. Note
5633 that these values will vary depending on the efficiency of the compiler and
5634 the compiler options used during generation.
5637 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
5638 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
5640 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
5641 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
5644 2) iASL Compiler/Disassembler:
5646 Fixed a missing semicolon in the aslcompiler.y file.
5648 ----------------------------------------
5649 05 November 2004. Summary of changes for version 20041105:
5651 1) ACPI CA Core Subsystem:
5653 Implemented support for FADT revision 2. This was an interim table (between
5654 ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register.
5656 Implemented optional support to allow uninitialized LocalX and ArgX
5657 variables in a control method. The variables are initialized to an Integer
5658 object with a value of zero. This support is enabled by setting the
5659 AcpiGbl_EnableInterpreterSlack flag to TRUE.
5661 Implemented support for Integer objects for the SizeOf operator. Either 4
5662 or 8 is returned, depending on the current integer size (32-bit or 64-bit,
5663 depending on the parent table revision).
5665 Fixed a problem in the implementation of the SizeOf and ObjectType operators
5666 where the operand was resolved to a value too early, causing incorrect
5667 return values for some objects.
5669 Fixed some possible memory leaks during exceptional conditions.
5671 Code and Data Size: Current and previous core subsystem library sizes are
5672 shown below. These are the code and data sizes for the acpica.lib produced
5673 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5674 any ACPI driver or OSPM code. The debug version of the code includes the
5675 debug output trace mechanism and has a much larger code and data size. Note
5676 that these values will vary depending on the efficiency of the compiler and
5677 the compiler options used during generation.
5680 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
5681 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
5683 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
5684 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
5687 2) iASL Compiler/Disassembler:
5689 Implemented support for all ACPI 3.0 reserved names and methods.
5691 Implemented all ACPI 3.0 grammar elements in the front-end, including
5692 support for semicolons.
5694 Implemented the ACPI 3.0 Function() and ToUUID() macros
5696 Fixed a problem in the disassembler where a Scope() operator would not be
5697 emitted properly if the target of the scope was in another table.
5699 ----------------------------------------
5700 15 October 2004. Summary of changes for version 20041015:
5702 Note: ACPI CA is currently undergoing an in-depth and complete formal
5703 evaluation to test/verify the following areas. Other suggestions are
5704 welcome. This will result in an increase in the frequency of releases and
5705 the number of bug fixes in the next few months.
5706 - Functional tests for all ASL/AML operators
5707 - All implicit/explicit type conversions
5708 - Bit fields and operation regions
5709 - 64-bit math support and 32-bit-only "truncated" math support
5710 - Exceptional conditions, both compiler and interpreter
5711 - Dynamic object deletion and memory leaks
5712 - ACPI 3.0 support when implemented
5713 - External interfaces to the ACPI subsystem
5716 1) ACPI CA Core Subsystem:
5718 Fixed two alignment issues on 64-bit platforms - within debug statements in
5719 AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the Address
5720 field within the non-aligned ACPI generic address structure.
5722 Fixed a problem in the Increment and Decrement operators where incorrect
5723 operand resolution could result in the inadvertent modification of the
5724 original integer when the integer is passed into another method as an
5725 argument and the arg is then incremented/decremented.
5727 Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-bit
5728 BCD number were truncated during conversion.
5730 Fixed a problem in the ToDecimal operator where the length of the resulting
5731 string could be set incorrectly too long if the input operand was a Buffer
5734 Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte (0)
5735 within a buffer would prematurely terminate a compare between buffer
5738 Added a check for string overflow (>200 characters as per the ACPI
5739 specification) during the Concatenate operator with two string operands.
5741 Code and Data Size: Current and previous core subsystem library sizes are
5742 shown below. These are the code and data sizes for the acpica.lib produced
5743 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5744 any ACPI driver or OSPM code. The debug version of the code includes the
5745 debug output trace mechanism and has a much larger code and data size. Note
5746 that these values will vary depending on the efficiency of the compiler and
5747 the compiler options used during generation.
5750 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
5751 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
5753 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
5754 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
5758 2) iASL Compiler/Disassembler:
5760 Allow the use of the ObjectType operator on uninitialized Locals and Args
5761 (returns 0 as per the ACPI specification).
5763 Fixed a problem where the compiler would fault if there was a syntax error
5764 in the FieldName of all of the various CreateXXXField operators.
5766 Disallow the use of lower case letters within the EISAID macro, as per the
5767 ACPI specification. All EISAID strings must be of the form "UUUNNNN" Where
5768 U is an uppercase letter and N is a hex digit.
5771 ----------------------------------------
5772 06 October 2004. Summary of changes for version 20041006:
5774 1) ACPI CA Core Subsystem:
5776 Implemented support for the ACPI 3.0 Timer operator. This ASL function
5777 implements a 64-bit timer with 100 nanosecond granularity.
5779 Defined a new OSL interface, AcpiOsGetTimer. This interface is used to
5780 implement the ACPI 3.0 Timer operator. This allows the host OS to implement
5781 the timer with the best clock available. Also, it keeps the core subsystem
5782 out of the clock handling business, since the host OS (usually) performs
5785 Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write)
5786 functions use a 64-bit address which is part of the packed ACPI Generic
5787 Address Structure. Since the structure is non-aligned, the alignment macros
5788 are now used to extract the address to a local variable before use.
5790 Fixed a problem where the ToInteger operator assumed all input strings were
5791 hexadecimal. The operator now handles both decimal strings and hex strings
5792 (prefixed with "0x").
5794 Fixed a problem where the string length in the string object created as a
5795 result of the internal ConvertToString procedure could be incorrect. This
5796 potentially affected all implicit conversions and also the ToDecimalString
5797 and ToHexString operators.
5799 Fixed two problems in the ToString operator. If the length parameter was
5800 zero, an incorrect string object was created and the value of the input
5801 length parameter was inadvertently changed from zero to Ones.
5803 Fixed a problem where the optional ResourceSource string in the ExtendedIRQ
5804 resource macro was ignored.
5806 Simplified the interfaces to the internal division functions, reducing code
5807 size and complexity.
5809 Code and Data Size: Current and previous core subsystem library sizes are
5810 shown below. These are the code and data sizes for the acpica.lib produced
5811 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5812 any ACPI driver or OSPM code. The debug version of the code includes the
5813 debug output trace mechanism and has a much larger code and data size. Note
5814 that these values will vary depending on the efficiency of the compiler and
5815 the compiler options used during generation.
5818 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
5819 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
5821 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
5822 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
5825 2) iASL Compiler/Disassembler:
5827 Implemented support for the ACPI 3.0 Timer operator.
5829 Fixed a problem where the Default() operator was inadvertently ignored in a
5830 Switch/Case block. This was a problem in the translation of the Switch
5831 statement to If...Else pairs.
5833 Added support to allow a standalone Return operator, with no parentheses (or
5836 Fixed a problem with code generation for the ElseIf operator where the
5837 translated Else...If parse tree was improperly constructed leading to the
5840 ----------------------------------------
5841 22 September 2004. Summary of changes for version 20040922:
5843 1) ACPI CA Core Subsystem:
5845 Fixed a problem with the implementation of the LNot() operator where "Ones"
5846 was not returned for the TRUE case. Changed the code to return Ones instead
5847 of (!Arg) which was usually 1. This change affects iASL constant folding for
5850 Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was not
5851 initialized properly -- Now zero the entire buffer in this case where the
5852 buffer already exists.
5854 Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32
5855 Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all
5856 related code considerably. This will require changes/updates to all OS
5857 interface layers (OSLs.)
5859 Implemented a new external interface, AcpiInstallExceptionHandler, to allow
5860 a system exception handler to be installed. This handler is invoked upon any
5861 run-time exception that occurs during control method execution.
5863 Added support for the DSDT in AcpiTbFindTable. This allows the
5864 DataTableRegion() operator to access the local copy of the DSDT.
5866 Code and Data Size: Current and previous core subsystem library sizes are
5867 shown below. These are the code and data sizes for the acpica.lib produced
5868 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5869 any ACPI driver or OSPM code. The debug version of the code includes the
5870 debug output trace mechanism and has a much larger code and data size. Note
5871 that these values will vary depending on the efficiency of the compiler and
5872 the compiler options used during generation.
5875 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
5876 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
5878 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
5879 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
5882 2) iASL Compiler/Disassembler:
5884 Fixed a problem with constant folding and the LNot operator. LNot was
5885 returning 1 in the TRUE case, not Ones as per the ACPI specification. This
5886 could result in the generation of an incorrect folded/reduced constant.
5888 End-Of-File is now allowed within a "//"-style comment. A parse error no
5889 longer occurs if such a comment is at the very end of the input ASL source
5892 Implemented the "-r" option to override the Revision in the table header.
5893 The initial use of this option will be to simplify the evaluation of the AML
5894 interpreter by allowing a single ASL source module to be compiled for either
5895 32-bit or 64-bit integers.
5898 ----------------------------------------
5899 27 August 2004. Summary of changes for version 20040827:
5901 1) ACPI CA Core Subsystem:
5903 - Implemented support for implicit object conversion in the non-numeric
5904 logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, and
5905 LNotEqual.) Any combination of Integers/Strings/Buffers may now be used;
5906 the second operand is implicitly converted on the fly to match the type of
5907 the first operand. For example:
5909 LEqual (Source1, Source2)
5911 Source1 and Source2 must each evaluate to an integer, a string, or a buffer.
5912 The data type of Source1 dictates the required type of Source2. Source2 is
5913 implicitly converted if necessary to match the type of Source1.
5915 - Updated and corrected the behavior of the string conversion support. The
5916 rules concerning conversion of buffers to strings (according to the ACPI
5917 specification) are as follows:
5919 ToDecimalString - explicit byte-wise conversion of buffer to string of
5920 decimal values (0-255) separated by commas. ToHexString - explicit byte-wise
5921 conversion of buffer to string of hex values (0-FF) separated by commas.
5922 ToString - explicit byte-wise conversion of buffer to string. Byte-by-byte
5923 copy with no transform except NULL terminated. Any other implicit buffer-to-
5924 string conversion - byte-wise conversion of buffer to string of hex values
5925 (0-FF) separated by spaces.
5927 - Fixed typo in definition of AcpiGbl_EnableInterpreterSlack.
5929 - Fixed a problem in AcpiNsGetPathnameLength where the returned length was
5930 one byte too short in the case of a node in the root scope. This could
5931 cause a fault during debug output.
5933 - Code and Data Size: Current and previous core subsystem library sizes are
5934 shown below. These are the code and data sizes for the acpica.lib produced
5935 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5936 any ACPI driver or OSPM code. The debug version of the code includes the
5937 debug output trace mechanism and has a much larger code and data size. Note
5938 that these values will vary depending on the efficiency of the compiler and
5939 the compiler options used during generation.
5942 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
5943 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
5945 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
5946 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
5949 2) iASL Compiler/Disassembler:
5951 - Fixed a Linux generation error.
5954 ----------------------------------------
5955 16 August 2004. Summary of changes for version 20040816:
5957 1) ACPI CA Core Subsystem:
5959 Designed and implemented support within the AML interpreter for the so-
5960 called "implicit return". This support returns the result of the last ASL
5961 operation within a control method, in the absence of an explicit Return()
5962 operator. A few machines depend on this behavior, even though it is not
5963 explicitly supported by the ASL language. It is optional support that can
5964 be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag.
5966 Removed support for the PCI_Config address space from the internal low level
5967 hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This
5968 support was not used internally, and would not work correctly anyway because
5969 the PCI bus number and segment number were not supported. There are
5970 separate interfaces for PCI configuration space access because of the unique
5973 Code and Data Size: Current and previous core subsystem library sizes are
5974 shown below. These are the code and data sizes for the acpica.lib produced
5975 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5976 any ACPI driver or OSPM code. The debug version of the code includes the
5977 debug output trace mechanism and has a much larger code and data size. Note
5978 that these values will vary depending on the efficiency of the compiler and
5979 the compiler options used during generation.
5982 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
5983 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
5985 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
5986 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
5989 2) iASL Compiler/Disassembler:
5991 Fixed a problem where constants in ASL expressions at the root level (not
5992 within a control method) could be inadvertently truncated during code
5993 generation. This problem was introduced in the 20040715 release.
5996 ----------------------------------------
5997 15 July 2004. Summary of changes for version 20040715:
5999 1) ACPI CA Core Subsystem:
6001 Restructured the internal HW GPE interfaces to pass/track the current state
6002 of interrupts (enabled/disabled) in order to avoid possible deadlock and
6003 increase flexibility of the interfaces.
6005 Implemented a "lexicographical compare" for String and Buffer objects within
6006 the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual --
6007 as per further clarification to the ACPI specification. Behavior is similar
6008 to C library "strcmp".
6010 Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable
6011 external function. In the 32-bit non-debug case, the stack use has been
6012 reduced from 168 bytes to 32 bytes.
6014 Deployed a new run-time configuration flag, AcpiGbl_EnableInterpreterSlack,
6015 whose purpose is to allow the AML interpreter to forgive certain bad AML
6016 constructs. Default setting is FALSE.
6018 Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field IO
6019 support code. If enabled, it allows field access to go beyond the end of a
6020 region definition if the field is within the region length rounded up to the
6021 next access width boundary (a common coding error.)
6023 Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to
6024 ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also, these
6025 symbols are lowercased by the latest version of the AcpiSrc tool.
6027 The prototypes for the PCI interfaces in acpiosxf.h have been updated to
6028 rename "Register" to simply "Reg" to prevent certain compilers from
6031 Code and Data Size: Current and previous core subsystem library sizes are
6032 shown below. These are the code and data sizes for the acpica.lib produced
6033 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
6034 any ACPI driver or OSPM code. The debug version of the code includes the
6035 debug output trace mechanism and has a much larger code and data size. Note
6036 that these values will vary depending on the efficiency of the compiler and
6037 the compiler options used during generation.
6040 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
6041 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
6043 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
6044 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
6047 2) iASL Compiler/Disassembler:
6049 Implemented full support for Package objects within the Case() operator.
6050 Note: The Break() operator is currently not supported within Case blocks
6051 (TermLists) as there is some question about backward compatibility with ACPI
6055 Fixed a problem where complex terms were not supported properly within the
6058 Eliminated extraneous warning for compiler-emitted reserved names of the
6059 form "_T_x". (Used in Switch/Case operators.)
6061 Eliminated optimization messages for "_T_x" objects and small constants
6062 within the DefinitionBlock operator.
6065 ----------------------------------------
6066 15 June 2004. Summary of changes for version 20040615:
6068 1) ACPI CA Core Subsystem:
6070 Implemented support for Buffer and String objects (as per ACPI 2.0) for the
6071 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
6074 All directory names in the entire source package are lower case, as they
6075 were in earlier releases.
6077 Implemented "Disassemble" command in the AML debugger that will disassemble
6078 a single control method.
6080 Code and Data Size: Current and previous core subsystem library sizes are
6081 shown below. These are the code and data sizes for the acpica.lib produced
6082 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
6083 any ACPI driver or OSPM code. The debug version of the code includes the
6084 debug output trace mechanism and has a much larger code and data size. Note
6085 that these values will vary depending on the efficiency of the compiler and
6086 the compiler options used during generation.
6089 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
6090 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
6093 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
6094 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
6097 2) iASL Compiler/Disassembler:
6099 Implemented support for Buffer and String objects (as per ACPI 2.0) for the
6100 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
6103 All directory names in the entire source package are lower case, as they
6104 were in earlier releases.
6106 Fixed a fault when using the -g or -d<nofilename> options if the FADT was
6109 Fixed an issue with the Windows version of the compiler where later versions
6110 of Windows place the FADT in the registry under the name "FADT" and not
6111 "FACP" as earlier versions did. This applies when using the -g or -
6112 d<nofilename> options. The compiler now looks for both strings as
6115 Fixed a problem with compiler namepath optimization where a namepath within
6116 the Scope() operator could not be optimized if the namepath was a subpath of
6117 the current scope path.
6119 ----------------------------------------
6120 27 May 2004. Summary of changes for version 20040527:
6122 1) ACPI CA Core Subsystem:
6124 Completed a new design and implementation for EBDA (Extended BIOS Data Area)
6125 support in the RSDP scan code. The original code improperly scanned for the
6126 EBDA by simply scanning from memory location 0 to 0x400. The correct method
6127 is to first obtain the EBDA pointer from within the BIOS data area, then
6128 scan 1K of memory starting at the EBDA pointer. There appear to be few if
6129 any machines that place the RSDP in the EBDA, however.
6131 Integrated a fix for a possible fault during evaluation of BufferField
6132 arguments. Obsolete code that was causing the problem was removed.
6134 Found and fixed a problem in the Field Support Code where data could be
6135 corrupted on a bit field read that starts on an aligned boundary but does
6136 not end on an aligned boundary. Merged the read/write "datum length"
6137 calculation code into a common procedure.
6139 Rolled in a couple of changes to the FreeBSD-specific header.
6142 Code and Data Size: Current and previous core subsystem library sizes are
6143 shown below. These are the code and data sizes for the acpica.lib produced
6144 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
6145 any ACPI driver or OSPM code. The debug version of the code includes the
6146 debug output trace mechanism and has a much larger code and data size. Note
6147 that these values will vary depending on the efficiency of the compiler and
6148 the compiler options used during generation.
6151 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
6152 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
6154 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
6155 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
6158 2) iASL Compiler/Disassembler:
6160 Fixed a generation warning produced by some overly-verbose compilers for a
6163 ----------------------------------------
6164 14 May 2004. Summary of changes for version 20040514:
6166 1) ACPI CA Core Subsystem:
6168 Fixed a problem where hardware GPE enable bits sometimes not set properly
6169 during and after GPE method execution. Result of 04/27 changes.
6171 Removed extra "clear all GPEs" when sleeping/waking.
6173 Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single
6174 AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above to
6175 the new AcpiEv* calls as appropriate.
6177 ACPI_OS_NAME was removed from the OS-specific headers. The default name is
6178 now "Microsoft Windows NT" for maximum compatibility. However this can be
6179 changed by modifying the acconfig.h file.
6181 Allow a single invocation of AcpiInstallNotifyHandler for a handler that
6182 traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag.
6184 Run _INI methods on ThermalZone objects. This is against the ACPI
6185 specification, but there is apparently ASL code in the field that has these
6186 _INI methods, and apparently "other" AML interpreters execute them.
6188 Performed a full 16/32/64 bit lint that resulted in some small changes.
6190 Added a sleep simulation command to the AML debugger to test sleep code.
6192 Code and Data Size: Current and previous core subsystem library sizes are
6193 shown below. These are the code and data sizes for the acpica.lib produced
6194 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
6195 any ACPI driver or OSPM code. The debug version of the code includes the
6196 debug output trace mechanism and has a much larger code and data size. Note
6197 that these values will vary depending on the efficiency of the compiler and
6198 the compiler options used during generation.
6201 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
6202 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
6204 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
6205 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
6207 ----------------------------------------
6208 27 April 2004. Summary of changes for version 20040427:
6210 1) ACPI CA Core Subsystem:
6212 Completed a major overhaul of the GPE handling within ACPI CA. There are
6213 now three types of GPEs: wake-only, runtime-only, and combination wake/run.
6214 The only GPEs allowed to be combination wake/run are for button-style
6215 devices such as a control-method power button, control-method sleep button,
6216 or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are not
6217 referenced by any _PRW methods are marked for "runtime" and hardware
6218 enabled. Any GPE that is referenced by a _PRW method is marked for "wake"
6219 (and disabled at runtime). However, at sleep time, only those GPEs that
6220 have been specifically enabled for wake via the AcpiEnableGpe interface will
6221 actually be hardware enabled.
6223 A new external interface has been added, AcpiSetGpeType(), that is meant to
6224 be used by device drivers to force a GPE to a particular type. It will be
6225 especially useful for the drivers for the button devices mentioned above.
6227 Completed restructuring of the ACPI CA initialization sequence so that
6228 default operation region handlers are installed before GPEs are initialized
6229 and the _PRW methods are executed. This will prevent errors when the _PRW
6230 methods attempt to access system memory or I/O space.
6232 GPE enable/disable no longer reads the GPE enable register. We now keep the
6233 enable info for runtime and wake separate and in the GPE_EVENT_INFO. We
6234 thus no longer depend on the hardware to maintain these bits.
6236 Always clear the wake status and fixed/GPE status bits before sleep, even
6239 Improved the AML debugger output for displaying the GPE blocks and their
6242 Added new strings for the _OSI method, of the form "Windows 2001 SPx" where
6245 Fixed a problem where the physical address was incorrectly calculated when
6246 the Load() operator was used to directly load from an Operation Region (vs.
6247 loading from a Field object.) Also added check for minimum table length for
6250 Fix for multiple mutex acquisition. Restore original thread SyncLevel on
6253 Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for
6254 consistency with the other fields returned.
6256 Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such
6257 structure for each GPE in the system, so the size of this structure is
6260 CPU stack requirement reduction: Cleaned up the method execution and object
6261 evaluation paths so that now a parameter structure is passed, instead of
6262 copying the various method parameters over and over again.
6264 In evregion.c: Correctly exit and reenter the interpreter region if and
6265 only if dispatching an operation region request to a user-installed handler.
6266 Do not exit/reenter when dispatching to a default handler (e.g., default
6267 system memory or I/O handlers)
6270 Notes for updating drivers for the new GPE support. The following changes
6271 must be made to ACPI-related device drivers that are attached to one or more
6272 GPEs: (This information will be added to the ACPI CA Programmer Reference.)
6274 1) AcpiInstallGpeHandler no longer automatically enables the GPE, you must
6275 explicitly call AcpiEnableGpe.
6276 2) There is a new interface called AcpiSetGpeType. This should be called
6277 before enabling the GPE. Also, this interface will automatically disable
6278 the GPE if it is currently enabled.
6279 3) AcpiEnableGpe no longer supports a GPE type flag.
6281 Specific drivers that must be changed:
6283 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED,
6284 AeGpeHandler, NULL);
6285 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME);
6286 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR);
6288 2) Button Drivers (Power, Lid, Sleep):
6289 Run _PRW method under parent device
6290 If _PRW exists: /* This is a control-method button */
6291 Extract GPE number and possibly GpeDevice
6292 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN);
6293 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR);
6295 For all other devices that have _PRWs, we automatically set the GPE type to
6296 ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. This
6297 must be done on a selective basis, usually requiring some kind of user app
6298 to allow the user to pick the wake devices.
6301 Code and Data Size: Current and previous core subsystem library sizes are
6302 shown below. These are the code and data sizes for the acpica.lib produced
6303 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
6304 any ACPI driver or OSPM code. The debug version of the code includes the
6305 debug output trace mechanism and has a much larger code and data size. Note
6306 that these values will vary depending on the efficiency of the compiler and
6307 the compiler options used during generation.
6310 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
6311 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
6314 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
6315 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
6319 ----------------------------------------
6320 02 April 2004. Summary of changes for version 20040402:
6322 1) ACPI CA Core Subsystem:
6324 Fixed an interpreter problem where an indirect store through an ArgX
6325 parameter was incorrectly applying the "implicit conversion rules" during
6326 the store. From the ACPI specification: "If the target is a method local or
6327 argument (LocalX or ArgX), no conversion is performed and the result is
6328 stored directly to the target". The new behavior is to disable implicit
6329 conversion during ALL stores to an ArgX.
6331 Changed the behavior of the _PRW method scan to ignore any and all errors
6332 returned by a given _PRW. This prevents the scan from aborting from the
6333 failure of any single _PRW.
6335 Moved the runtime configuration parameters from the global init procedure to
6336 static variables in acglobal.h. This will allow the host to override the
6337 default values easily.
6339 Code and Data Size: Current and previous core subsystem library sizes are
6340 shown below. These are the code and data sizes for the acpica.lib produced
6341 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
6342 any ACPI driver or OSPM code. The debug version of the code includes the
6343 debug output trace mechanism and has a much larger code and data size. Note
6344 that these values will vary depending on the efficiency of the compiler and
6345 the compiler options used during generation.
6348 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
6349 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
6351 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
6352 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
6355 2) iASL Compiler/Disassembler:
6357 iASL now fully disassembles SSDTs. However, External() statements are not
6358 generated automatically for unresolved symbols at this time. This is a
6359 planned feature for future implementation.
6361 Fixed a scoping problem in the disassembler that occurs when the type of the
6362 target of a Scope() operator is overridden. This problem caused an
6363 incorrectly nested internal namespace to be constructed.
6365 Any warnings or errors that are emitted during disassembly are now commented
6366 out automatically so that the resulting file can be recompiled without any
6369 ----------------------------------------
6370 26 March 2004. Summary of changes for version 20040326:
6372 1) ACPI CA Core Subsystem:
6374 Implemented support for "wake" GPEs via interaction between GPEs and the
6375 _PRW methods. Every GPE that is pointed to by one or more _PRWs is
6376 identified as a WAKE GPE and by default will no longer be enabled at
6377 runtime. Previously, we were blindly enabling all GPEs with a corresponding
6378 _Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway. We
6379 believe this has been the cause of thousands of "spurious" GPEs on some
6382 This new GPE behavior is can be reverted to the original behavior (enable
6383 ALL GPEs at runtime) via a runtime flag.
6385 Fixed a problem where aliased control methods could not access objects
6386 properly. The proper scope within the namespace was not initialized
6387 (transferred to the target of the aliased method) before executing the
6390 Fixed a potential race condition on internal object deletion on the return
6391 object in AcpiEvaluateObject.
6393 Integrated a fix for resource descriptors where both _MEM and _MTP were
6394 being extracted instead of just _MEM. (i.e. bitmask was incorrectly too
6395 wide, 0x0F instead of 0x03.)
6397 Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, preventing a
6398 fault in some cases.
6400 Updated Notify() values for debug statements in evmisc.c
6402 Return proper status from AcpiUtMutexInitialize, not just simply AE_OK.
6404 Code and Data Size: Current and previous core subsystem library sizes are
6405 shown below. These are the code and data sizes for the acpica.lib produced
6406 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
6407 any ACPI driver or OSPM code. The debug version of the code includes the
6408 debug output trace mechanism and has a much larger code and data size. Note
6409 that these values will vary depending on the efficiency of the compiler and
6410 the compiler options used during generation.
6414 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
6415 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
6417 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
6418 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
6420 ----------------------------------------
6421 11 March 2004. Summary of changes for version 20040311:
6423 1) ACPI CA Core Subsystem:
6425 Fixed a problem where errors occurring during the parse phase of control
6426 method execution did not abort cleanly. For example, objects created and
6427 installed in the namespace were not deleted. This caused all subsequent
6428 invocations of the method to return the AE_ALREADY_EXISTS exception.
6430 Implemented a mechanism to force a control method to "Serialized" execution
6431 if the method attempts to create namespace objects. (The root of the
6432 AE_ALREADY_EXISTS problem.)
6434 Implemented support for the predefined _OSI "internal" control method.
6435 Initial supported strings are "Linux", "Windows 2000", "Windows 2001", and
6436 "Windows 2001.1", and can be easily upgraded for new strings as necessary.
6437 This feature will allow "other" operating systems to execute the fully
6438 tested, "Windows" code path through the ASL code
6440 Global Lock Support: Now allows multiple acquires and releases with any
6441 internal thread. Removed concept of "owning thread" for this special mutex.
6443 Fixed two functions that were inappropriately declaring large objects on the
6444 CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage during
6445 method execution considerably.
6447 Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the
6448 S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT.
6450 Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs
6451 defined on the machine.
6453 Implemented two runtime options: One to force all control method execution
6454 to "Serialized" to mimic Windows behavior, another to disable _OSI support
6455 if it causes problems on a given machine.
6457 Code and Data Size: Current and previous core subsystem library sizes are
6458 shown below. These are the code and data sizes for the acpica.lib produced
6459 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
6460 any ACPI driver or OSPM code. The debug version of the code includes the
6461 debug output trace mechanism and has a much larger code and data size. Note
6462 that these values will vary depending on the efficiency of the compiler and
6463 the compiler options used during generation.
6466 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
6467 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
6469 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
6470 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
6472 2) iASL Compiler/Disassembler:
6474 Fixed an array size problem for FreeBSD that would cause the compiler to
6477 ----------------------------------------
6478 20 February 2004. Summary of changes for version 20040220:
6481 1) ACPI CA Core Subsystem:
6483 Implemented execution of _SxD methods for Device objects in the
6484 GetObjectInfo interface.
6486 Fixed calls to _SST method to pass the correct arguments.
6488 Added a call to _SST on wake to restore to "working" state.
6490 Check for End-Of-Buffer failure case in the WalkResources interface.
6492 Integrated fix for 64-bit alignment issue in acglobal.h by moving two
6493 structures to the beginning of the file.
6495 After wake, clear GPE status register(s) before enabling GPEs.
6497 After wake, clear/enable power button. (Perhaps we should clear/enable all
6498 fixed events upon wake.)
6500 Fixed a couple of possible memory leaks in the Namespace manager.
6502 Integrated latest acnetbsd.h file.
6504 ----------------------------------------
6505 11 February 2004. Summary of changes for version 20040211:
6508 1) ACPI CA Core Subsystem:
6510 Completed investigation and implementation of the call-by-reference
6511 mechanism for control method arguments.
6513 Fixed a problem where a store of an object into an indexed package could
6514 fail if the store occurs within a different method than the method that
6515 created the package.
6517 Fixed a problem where the ToDecimal operator could return incorrect results.
6519 Fixed a problem where the CopyObject operator could fail on some of the more
6520 obscure objects (e.g., Reference objects.)
6522 Improved the output of the Debug object to display buffer, package, and
6525 Fixed a problem where constructs of the form "RefOf (ArgX)" did not return
6526 the expected result.
6528 Added permanent ACPI_REPORT_ERROR macros for all instances of the
6529 ACPI_AML_INTERNAL exception.
6531 Integrated latest version of acfreebsd.h
6533 ----------------------------------------
6534 16 January 2004. Summary of changes for version 20040116:
6536 The purpose of this release is primarily to update the copyright years in
6537 each module, thus causing a huge number of diffs. There are a few small
6538 functional changes, however.
6540 1) ACPI CA Core Subsystem:
6542 Improved error messages when there is a problem finding one or more of the
6543 required base ACPI tables
6545 Reintroduced the definition of APIC_HEADER in actbl.h
6547 Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h)
6549 Removed extraneous reference to NewObj in dsmthdat.c
6553 Fixed a problem introduced in December that disabled the correct disassembly
6554 of Resource Templates
6557 ----------------------------------------
6558 03 December 2003. Summary of changes for version 20031203:
6560 1) ACPI CA Core Subsystem:
6562 Changed the initialization of Operation Regions during subsystem
6563 init to perform two entire walks of the ACPI namespace; The first
6564 to initialize the regions themselves, the second to execute the
6565 _REG methods. This fixed some interdependencies across _REG
6566 methods found on some machines.
6568 Fixed a problem where a Store(Local0, Local1) could simply update
6569 the object reference count, and not create a new copy of the
6570 object if the Local1 is uninitialized.
6572 Implemented support for the _SST reserved method during sleep
6575 Implemented support to clear the SLP_TYP and SLP_EN bits when
6576 waking up, this is apparently required by some machines.
6578 When sleeping, clear the wake status only if SleepState is not S5.
6580 Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect
6581 pointer arithmetic advanced a string pointer too far.
6583 Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer
6584 could be returned if the requested table has not been loaded.
6586 Within the support for IRQ resources, restructured the handling of
6587 the active and edge/level bits.
6589 Fixed a few problems in AcpiPsxExecute() where memory could be
6590 leaked under certain error conditions.
6592 Improved error messages for the cases where the ACPI mode could
6595 Code and Data Size: Current and previous core subsystem library
6596 sizes are shown below. These are the code and data sizes for the
6597 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
6598 these values do not include any ACPI driver or OSPM code. The
6599 debug version of the code includes the debug output trace
6600 mechanism and has a much larger code and data size. Note that
6601 these values will vary depending on the efficiency of the compiler
6602 and the compiler options used during generation.
6604 Previous Release (20031029):
6605 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
6606 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
6608 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
6609 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
6611 2) iASL Compiler/Disassembler:
6613 Implemented a fix for the iASL disassembler where a bad index was
6614 generated. This was most noticeable on 64-bit platforms
6617 ----------------------------------------
6618 29 October 2003. Summary of changes for version 20031029:
6620 1) ACPI CA Core Subsystem:
6623 Fixed a problem where a level-triggered GPE with an associated
6624 _Lxx control method was incorrectly cleared twice.
6626 Fixed a problem with the Field support code where an access can
6627 occur beyond the end-of-region if the field is non-aligned but
6628 extends to the very end of the parent region (resulted in an
6629 AE_AML_REGION_LIMIT exception.)
6631 Fixed a problem with ACPI Fixed Events where an RT Clock handler
6632 would not get invoked on an RTC event. The RTC event bitmasks for
6633 the PM1 registers were not being initialized properly.
6635 Implemented support for executing _STA and _INI methods for
6636 Processor objects. Although this is currently not part of the
6637 ACPI specification, there is existing ASL code that depends on the
6638 init-time execution of these methods.
6640 Implemented and deployed a GetDescriptorName function to decode
6641 the various types of internal descriptors. Guards against null
6642 descriptors during debug output also.
6644 Implemented and deployed a GetNodeName function to extract the 4-
6645 character namespace node name. This function simplifies the debug
6646 and error output, as well as guarding against null pointers during
6649 Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to
6650 simplify the debug and error output of 64-bit integers. This
6651 macro replaces the HIDWORD and LODWORD macros for dumping these
6654 Updated the implementation of the Stall() operator to only call
6655 AcpiOsStall(), and also return an error if the operand is larger
6656 than 255. This preserves the required behavior of not
6657 relinquishing the processor, as would happen if AcpiOsSleep() was
6658 called for "long stalls".
6660 Constructs of the form "Store(LocalX,LocalX)" where LocalX is not
6661 initialized are now treated as NOOPs.
6663 Cleaned up a handful of warnings during 64-bit generation.
6665 Fixed a reported error where and incorrect GPE number was passed
6666 to the GPE dispatch handler. This value is only used for error
6667 output, however. Used this opportunity to clean up and streamline
6668 the GPE dispatch code.
6670 Code and Data Size: Current and previous core subsystem library
6671 sizes are shown below. These are the code and data sizes for the
6672 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
6673 these values do not include any ACPI driver or OSPM code. The
6675 debug version of the code includes the debug output trace
6676 mechanism and has a much larger code and data size. Note that
6677 these values will vary depending on the efficiency of the compiler
6678 and the compiler options used during generation.
6680 Previous Release (20031002):
6681 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
6682 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
6684 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
6685 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
6688 2) iASL Compiler/Disassembler:
6690 Updated the iASL compiler to return an error if the operand to the
6691 Stall() operator is larger than 255.
6694 ----------------------------------------
6695 02 October 2003. Summary of changes for version 20031002:
6698 1) ACPI CA Core Subsystem:
6700 Fixed a problem with Index Fields where the index was not
6701 incremented for fields that require multiple writes to the
6702 index/data registers (Fields that are wider than the data
6705 Fixed a problem with all Field objects where a write could go
6706 beyond the end-of-field if the field was larger than the access
6707 granularity and therefore required multiple writes to complete the
6708 request. An extra write beyond the end of the field could happen
6711 Fixed a problem with Index Fields where a BUFFER_OVERFLOW error
6712 would incorrectly be returned if the width of the Data Register
6713 was larger than the specified field access width.
6715 Completed fixes for LoadTable() and Unload() and verified their
6716 operation. Implemented full support for the "DdbHandle" object
6717 throughout the ACPI CA subsystem.
6719 Implemented full support for the MADT and ECDT tables in the ACPI
6720 CA header files. Even though these tables are not directly
6721 consumed by ACPI CA, the header definitions are useful for ACPI
6724 Integrated resource descriptor fixes posted to the Linux ACPI
6725 list. This included checks for minimum descriptor length, and
6726 support for trailing NULL strings within descriptors that have
6727 optional string elements.
6729 Code and Data Size: Current and previous core subsystem library
6730 sizes are shown below. These are the code and data sizes for the
6731 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
6732 these values do not include any ACPI driver or OSPM code. The
6733 debug version of the code includes the debug output trace
6734 mechanism and has a much larger code and data size. Note that
6735 these values will vary depending on the efficiency of the compiler
6736 and the compiler options used during generation.
6738 Previous Release (20030918):
6739 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
6740 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
6742 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
6743 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
6748 Implemented detection of non-ASCII characters within the input
6749 source ASL file. This catches attempts to compile binary (AML)
6750 files early in the compile, with an informative error message.
6752 Fixed a problem where the disassembler would fault if the output
6753 filename could not be generated or if the output file could not be
6756 ----------------------------------------
6757 18 September 2003. Summary of changes for version 20030918:
6760 1) ACPI CA Core Subsystem:
6762 Found and fixed a longstanding problem with the late execution of
6763 the various deferred AML opcodes (such as Operation Regions,
6764 Buffer Fields, Buffers, and Packages). If the name string
6765 specified for the name of the new object placed the object in a
6766 scope other than the current scope, the initialization/execution
6767 of the opcode failed. The solution to this problem was to
6768 implement a mechanism where the late execution of such opcodes
6769 does not attempt to lookup/create the name a second time in an
6770 incorrect scope. This fixes the "region size computed
6771 incorrectly" problem.
6773 Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a
6774 Global Lock AE_BAD_PARAMETER error.
6776 Fixed several 64-bit issues with prototypes, casting and data
6779 Removed duplicate prototype from acdisasm.h
6781 Fixed an issue involving EC Operation Region Detach (Shaohua Li)
6783 Code and Data Size: Current and previous core subsystem library
6784 sizes are shown below. These are the code and data sizes for the
6785 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
6786 these values do not include any ACPI driver or OSPM code. The
6787 debug version of the code includes the debug output trace
6788 mechanism and has a much larger code and data size. Note that
6789 these values will vary depending on the efficiency of the compiler
6790 and the compiler options used during generation.
6794 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
6795 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
6797 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
6798 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
6803 Fixed the AcpiOsSleep implementation in osunixxf.c to pass the
6804 correct sleep time in seconds.
6806 ----------------------------------------
6807 14 July 2003. Summary of changes for version 20030619:
6809 1) ACPI CA Core Subsystem:
6811 Parse SSDTs in order discovered, as opposed to reverse order
6814 Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas
6821 Dynamically allocate SDT list (suggested by Andi Kleen)
6823 proc function return value cleanups (Andi Kleen)
6825 Correctly handle NMI watchdog during long stalls (Andrew Morton)
6827 Make it so acpismp=force works (reported by Andrew Morton)
6830 ----------------------------------------
6831 19 June 2003. Summary of changes for version 20030619:
6833 1) ACPI CA Core Subsystem:
6835 Fix To/FromBCD, eliminating the need for an arch-specific #define.
6837 Do not acquire a semaphore in the S5 shutdown path.
6839 Fix ex_digits_needed for 0. (Takayoshi Kochi)
6841 Fix sleep/stall code reversal. (Andi Kleen)
6843 Revert a change having to do with control method calling
6848 acpiphp update (Takayoshi Kochi)
6850 Export acpi_disabled for sonypi (Stelian Pop)
6852 Mention acpismp=force in config help
6854 Re-add acpitable.c and acpismp=force. This improves backwards
6856 compatibility and also cleans up the code to a significant degree.
6858 Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge)
6860 ----------------------------------------
6861 22 May 2003. Summary of changes for version 20030522:
6863 1) ACPI CA Core Subsystem:
6865 Found and fixed a reported problem where an AE_NOT_FOUND error
6866 occurred occasionally during _BST evaluation. This turned out to
6867 be an Owner ID allocation issue where a called method did not get
6868 a new ID assigned to it. Eventually, (after 64k calls), the Owner
6869 ID UINT16 would wraparound so that the ID would be the same as the
6870 caller's and the called method would delete the caller's
6873 Implemented extended error reporting for control methods that are
6874 aborted due to a run-time exception. Output includes the exact
6875 AML instruction that caused the method abort, a dump of the method
6876 locals and arguments at the time of the abort, and a trace of all
6877 nested control method calls.
6879 Modified the interpreter to allow the creation of buffers of zero
6880 length from the AML code. Implemented new code to ensure that no
6881 attempt is made to actually allocate a memory buffer (of length
6882 zero) - instead, a simple buffer object with a NULL buffer pointer
6883 and length zero is created. A warning is no longer issued when
6884 the AML attempts to create a zero-length buffer.
6886 Implemented a workaround for the "leading asterisk issue" in
6887 _HIDs, _UIDs, and _CIDs in the AML interpreter. One leading
6888 asterisk is automatically removed if present in any HID, UID, or
6889 CID strings. The iASL compiler will still flag this asterisk as
6892 Implemented full support for _CID methods that return a package of
6893 multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface
6894 now additionally returns a device _CID list if present. This
6895 required a change to the external interface in order to pass an
6896 ACPI_BUFFER object as a parameter since the _CID list is of
6899 Fixed a problem with the new AE_SAME_HANDLER exception where
6900 handler initialization code did not know about this exception.
6902 Code and Data Size: Current and previous core subsystem library
6903 sizes are shown below. These are the code and data sizes for the
6904 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
6905 these values do not include any ACPI driver or OSPM code. The
6906 debug version of the code includes the debug output trace
6907 mechanism and has a much larger code and data size. Note that
6908 these values will vary depending on the efficiency of the compiler
6909 and the compiler options used during generation.
6911 Previous Release (20030509):
6912 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
6913 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
6915 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
6916 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
6921 Fixed a bug in which we would reinitialize the ACPI interrupt
6922 after it was already working, thus disabling all ACPI and the IRQs
6923 for any other device sharing the interrupt. (Thanks to Stian
6926 Toshiba driver update (John Belmonte)
6928 Return only 0 or 1 for our interrupt handler status (Andrew
6934 Fixed a reported problem where multiple (nested) ElseIf()
6935 statements were not handled correctly by the compiler, resulting
6936 in incorrect warnings and incorrect AML code. This was a problem
6937 in both the ASL parser and the code generator.
6942 Added changes to existing interfaces, new exception codes, and new
6943 text concerning reference count object management versus garbage
6946 ----------------------------------------
6947 09 May 2003. Summary of changes for version 20030509.
6950 1) ACPI CA Core Subsystem:
6952 Changed the subsystem initialization sequence to hold off
6953 installation of address space handlers until the hardware has been
6954 initialized and the system has entered ACPI mode. This is because
6955 the installation of space handlers can cause _REG methods to be
6956 run. Previously, the _REG methods could potentially be run before
6957 ACPI mode was enabled.
6959 Fixed some memory leak issues related to address space handler and
6960 notify handler installation. There were some problems with the
6961 reference count mechanism caused by the fact that the handler
6962 objects are shared across several namespace objects.
6964 Fixed a reported problem where reference counts within the
6965 namespace were not properly updated when named objects created by
6966 method execution were deleted.
6968 Fixed a reported problem where multiple SSDTs caused a deletion
6969 issue during subsystem termination. Restructured the table data
6970 structures to simplify the linked lists and the related code.
6972 Fixed a problem where the table ID associated with secondary
6973 tables (SSDTs) was not being propagated into the namespace objects
6974 created by those tables. This would only present a problem for
6975 tables that are unloaded at run-time, however.
6977 Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE
6978 type as the length parameter (instead of UINT32).
6980 Solved a long-standing problem where an ALREADY_EXISTS error
6981 appears on various systems. This problem could happen when there
6982 are multiple PCI_Config operation regions under a single PCI root
6983 bus. This doesn't happen very frequently, but there are some
6984 systems that do this in the ASL.
6986 Fixed a reported problem where the internal DeleteNode function
6987 was incorrectly handling the case where a namespace node was the
6988 first in the parent's child list, and had additional peers (not
6989 the only child, but first in the list of children.)
6991 Code and Data Size: Current core subsystem library sizes are shown
6992 below. These are the code and data sizes for the acpica.lib
6993 produced by the Microsoft Visual C++ 6.0 compiler, and these
6994 values do not include any ACPI driver or OSPM code. The debug
6995 version of the code includes the debug output trace mechanism and
6996 has a much larger code and data size. Note that these values will
6997 vary depending on the efficiency of the compiler and the compiler
6998 options used during generation.
7001 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
7002 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
7004 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
7005 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
7010 Allow ":" in OS override string (Ducrot Bruno)
7012 Kobject fix (Greg KH)
7015 3 iASL Compiler/Disassembler:
7017 Fixed a problem in the generation of the C source code files (AML
7018 is emitted in C source statements for BIOS inclusion) where the
7019 Ascii dump that appears within a C comment at the end of each line
7020 could cause a compile time error if the AML sequence happens to
7021 have an open comment or close comment sequence embedded.
7024 ----------------------------------------
7025 24 April 2003. Summary of changes for version 20030424.
7028 1) ACPI CA Core Subsystem:
7030 Support for big-endian systems has been implemented. Most of the
7031 support has been invisibly added behind big-endian versions of the
7034 Fixed a problem in AcpiHwDisableGpeBlock() and
7035 AcpiHwClearGpeBlock() where an incorrect offset was passed to the
7036 low level hardware write routine. The offset parameter was
7037 actually eliminated from the low level read/write routines because
7038 they had become obsolete.
7040 Fixed a problem where a handler object was deleted twice during
7041 the removal of a fixed event handler.
7046 A fix for SMP systems with link devices was contributed by
7050 (2.5) Return whether we handled the interrupt in our IRQ handler.
7051 (Linux ISRs no longer return void, so we can propagate the handler
7052 return value from the ACPI CA core back to the OS.)
7058 The ACPI CA Programmer Reference has been updated to reflect new
7059 interfaces and changes to existing interfaces.
7061 ----------------------------------------
7062 28 March 2003. Summary of changes for version 20030328.
7064 1) ACPI CA Core Subsystem:
7066 The GPE Block Device support has been completed. New interfaces
7067 are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event
7068 interfaces (enable, disable, clear, getstatus) have been split
7069 into separate interfaces for Fixed Events and General Purpose
7070 Events (GPEs) in order to support GPE Block Devices properly.
7072 Fixed a problem where the error message "Failed to acquire
7073 semaphore" would appear during operations on the embedded
7076 Code and Data Size: Current core subsystem library sizes are shown
7077 below. These are the code and data sizes for the acpica.lib
7078 produced by the Microsoft Visual C++ 6.0 compiler, and these
7079 values do not include any ACPI driver or OSPM code. The debug
7080 version of the code includes the debug output trace mechanism and
7081 has a much larger code and data size. Note that these values will
7082 vary depending on the efficiency of the compiler and the compiler
7083 options used during generation.
7086 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
7087 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
7089 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
7090 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
7093 ----------------------------------------
7094 28 February 2003. Summary of changes for version 20030228.
7097 1) ACPI CA Core Subsystem:
7099 The GPE handling and dispatch code has been completely overhauled
7100 in preparation for support of GPE Block Devices (ID ACPI0006).
7101 This affects internal data structures and code only; there should
7102 be no differences visible externally. One new file has been
7105 The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only
7106 fields that are used to determine the GPE block lengths. The
7107 REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address
7108 structures are ignored. This is per the ACPI specification but it
7109 isn't very clear. The full 256 Block 0/1 GPEs are now supported
7110 (the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128).
7112 In the SCI interrupt handler, removed the read of the PM1_CONTROL
7113 register to look at the SCI_EN bit. On some machines, this read
7114 causes an SMI event and greatly slows down SCI events. (This may
7115 in fact be the cause of slow battery status response on some
7118 Fixed a problem where a store of a NULL string to a package object
7119 could cause the premature deletion of the object. This was seen
7120 during execution of the battery _BIF method on some systems,
7121 resulting in no battery data being returned.
7123 Added AcpiWalkResources interface to simplify parsing of resource
7126 Code and Data Size: Current core subsystem library sizes are shown
7127 below. These are the code and data sizes for the acpica.lib
7128 produced by the Microsoft Visual C++ 6.0 compiler, and these
7129 values do not include any ACPI driver or OSPM code. The debug
7130 version of the code includes the debug output trace mechanism and
7131 has a much larger code and data size. Note that these values will
7132 vary depending on the efficiency of the compiler and the compiler
7133 options used during generation.
7136 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
7137 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
7139 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
7140 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
7145 S3 fixes (Ole Rohne)
7147 Update ACPI PHP driver with to use new acpi_walk_resource API
7150 Add S4BIOS support (Pavel Machek)
7152 Map in entire table before performing checksum (John Stultz)
7154 Expand the mem= cmdline to allow the specification of reserved and
7155 ACPI DATA blocks (Pavel Machek)
7157 Never use ACPI on VISWS
7159 Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez)
7161 Revert a change that allowed P_BLK lengths to be 4 or 5. This is
7162 causing us to think that some systems support C2 when they really
7165 Do not count processor objects for non-present CPUs (Thanks to
7171 Fixed a problem where ASL include files could not be found and
7174 Added support for the _PDC reserved name.
7177 ----------------------------------------
7178 22 January 2003. Summary of changes for version 20030122.
7181 1) ACPI CA Core Subsystem:
7183 Added a check for constructs of the form: Store (Local0, Local0)
7184 where Local0 is not initialized. Apparently, some BIOS
7185 programmers believe that this is a NOOP. Since this store doesn't
7186 do anything anyway, the new prototype behavior will ignore this
7187 error. This is a case where we can relax the strict checking in
7188 the interpreter in the name of compatibility.
7193 The AcpiSrc Source Conversion Utility has been released with the
7194 Linux package for the first time. This is the utility that is
7195 used to convert the ACPI CA base source code to the Linux version.
7197 (Both) Handle P_BLK lengths shorter than 6 more gracefully
7199 (Both) Move more headers to include/acpi, and delete an unused
7202 (Both) Move drivers/acpi/include directory to include/acpi
7204 (Both) Boot functions don't use cmdline, so don't pass it around
7206 (Both) Remove include of unused header (Adrian Bunk)
7208 (Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since
7210 former now also includes the latter, acpiphp.h only needs the one,
7213 (2.5) Make it possible to select method of bios restoring after S3
7214 resume. [=> no more ugly ifdefs] (Pavel Machek)
7216 (2.5) Make proc write interfaces work (Pavel Machek)
7218 (2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski)
7220 (2.5) Break out ACPI Perf code into its own module, under cpufreq
7223 (2.4) S4BIOS support (Ducrot Bruno)
7225 (2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio
7231 Added support to disassemble SSDT and PSDTs.
7233 Implemented support to obtain SSDTs from the Windows registry if
7237 ----------------------------------------
7238 09 January 2003. Summary of changes for version 20030109.
7240 1) ACPI CA Core Subsystem:
7242 Changed the behavior of the internal Buffer-to-String conversion
7243 function. The current ACPI specification states that the contents
7244 of the buffer are "converted to a string of two-character
7245 hexadecimal numbers, each separated by a space". Unfortunately,
7246 this definition is not backwards compatible with existing ACPI 1.0
7247 implementations (although the behavior was not defined in the ACPI
7248 1.0 specification). The new behavior simply copies data from the
7249 buffer to the string until a null character is found or the end of
7250 the buffer is reached. The new String object is always null
7251 terminated. This problem was seen during the generation of _BIF
7252 battery data where incorrect strings were returned for battery
7253 type, etc. This will also require an errata to the ACPI
7256 Renamed all instances of NATIVE_UINT and NATIVE_INT to
7257 ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively.
7259 Copyright in all module headers (both Linux and non-Linux) has be
7262 Code and Data Size: Current core subsystem library sizes are shown
7263 below. These are the code and data sizes for the acpica.lib
7264 produced by the Microsoft Visual C++ 6.0 compiler, and these
7265 values do not include any ACPI driver or OSPM code. The debug
7266 version of the code includes the debug output trace mechanism and
7267 has a much larger code and data size. Note that these values will
7268 vary depending on the efficiency of the compiler and the compiler
7269 options used during generation.
7272 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
7273 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
7275 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
7276 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
7281 Fixed an oops on module insertion/removal (Matthew Tippett)
7283 (2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante)
7285 (2.5) Replace pr_debug (Randy Dunlap)
7287 (2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski)
7289 (Both) Eliminate spawning of thread from timer callback, in favor
7292 (Both) Show Lid status in /proc (Zdenek OGAR Skalak)
7294 (Both) Added define for Fixed Function HW region (Matthew Wilcox)
7296 (Both) Add missing statics to button.c (Pavel Machek)
7298 Several changes have been made to the source code translation
7299 utility that generates the Linux Code in order to make the code
7302 All typedefs on structs and unions have been removed in keeping
7303 with the Linux coding style.
7305 Removed the non-Linux SourceSafe module revision number from each
7308 Completed major overhaul of symbols to be lowercased for linux.
7309 Doubled the number of symbols that are lowercased.
7311 Fixed a problem where identifiers within procedure headers and
7312 within quotes were not fully lower cased (they were left with a
7315 Some C macros whose only purpose is to allow the generation of 16-
7316 bit code are now completely removed in the Linux code, increasing
7317 readability and maintainability.
7319 ----------------------------------------
7321 12 December 2002. Summary of changes for version 20021212.
7324 1) ACPI CA Core Subsystem:
7326 Fixed a problem where the creation of a zero-length AML Buffer
7327 would cause a fault.
7329 Fixed a problem where a Buffer object that pointed to a static AML
7330 buffer (in an ACPI table) could inadvertently be deleted, causing
7333 Fixed a problem where a user buffer (passed in to the external
7334 ACPI CA interfaces) could be overwritten if the buffer was too
7335 small to complete the operation, causing memory corruption.
7337 Fixed a problem in the Buffer-to-String conversion code where a
7338 string of length one was always returned, regardless of the size
7339 of the input Buffer object.
7341 Removed the NATIVE_CHAR data type across the entire source due to
7342 lack of need and lack of consistent use.
7344 Code and Data Size: Current core subsystem library sizes are shown
7345 below. These are the code and data sizes for the acpica.lib
7346 produced by the Microsoft Visual C++ 6.0 compiler, and these
7347 values do not include any ACPI driver or OSPM code. The debug
7348 version of the code includes the debug output trace mechanism and
7349 has a much larger code and data size. Note that these values will
7350 vary depending on the efficiency of the compiler and the compiler
7351 options used during generation.
7354 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
7355 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
7357 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
7358 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
7361 ----------------------------------------
7362 05 December 2002. Summary of changes for version 20021205.
7364 1) ACPI CA Core Subsystem:
7366 Fixed a problem where a store to a String or Buffer object could
7367 cause corruption of the DSDT if the object type being stored was
7368 the same as the target object type and the length of the object
7369 being stored was equal to or smaller than the original (existing)
7370 target object. This was seen to cause corruption of battery _BIF
7371 buffers if the _BIF method modified the buffer on the fly.
7373 Fixed a problem where an internal error was generated if a control
7374 method invocation was used in an OperationRegion, Buffer, or
7375 Package declaration. This was caused by the deferred parsing of
7376 the control method and thus the deferred creation of the internal
7377 method object. The solution to this problem was to create the
7378 internal method object at the moment the method is encountered in
7379 the first pass - so that subsequent references to the method will
7380 able to obtain the required parameter count and thus properly
7381 parse the method invocation. This problem presented itself as an
7382 AE_AML_INTERNAL during the pass 1 parse phase during table load.
7384 Fixed a problem where the internal String object copy routine did
7385 not always allocate sufficient memory for the target String object
7386 and caused memory corruption. This problem was seen to cause
7387 "Allocation already present in list!" errors as memory allocation
7390 Implemented a new function for the evaluation of namespace objects
7391 that allows the specification of the allowable return object
7392 types. This simplifies a lot of code that checks for a return
7393 object of one or more specific objects returned from the
7394 evaluation (such as _STA, etc.) This may become and external
7395 function if it would be useful to ACPI-related drivers.
7397 Completed another round of prefixing #defines with "ACPI_" for
7400 Completed additional code restructuring to allow more modular
7401 linking for iASL compiler and AcpiExec. Several files were split
7402 creating new files. New files: nsparse.c dsinit.c evgpe.c
7404 Implemented an abort mechanism to terminate an executing control
7405 method via the AML debugger. This feature is useful for debugging
7406 control methods that depend (wait) for specific hardware
7409 Code and Data Size: Current core subsystem library sizes are shown
7410 below. These are the code and data sizes for the acpica.lib
7411 produced by the Microsoft Visual C++ 6.0 compiler, and these
7412 values do not include any ACPI driver or OSPM code. The debug
7413 version of the code includes the debug output trace mechanism and
7414 has a much larger code and data size. Note that these values will
7415 vary depending on the efficiency of the compiler and the compiler
7416 options used during generation.
7419 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
7420 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
7422 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
7423 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
7426 2) iASL Compiler/Disassembler
7428 Fixed a compiler code generation problem for "Interrupt" Resource
7429 Descriptors. If specified in the ASL, the optional "Resource
7430 Source Index" and "Resource Source" fields were not inserted into
7431 the correct location within the AML resource descriptor, creating
7432 an invalid descriptor.
7434 Fixed a disassembler problem for "Interrupt" resource descriptors.
7435 The optional "Resource Source Index" and "Resource Source" fields
7439 ----------------------------------------
7440 22 November 2002. Summary of changes for version 20021122.
7443 1) ACPI CA Core Subsystem:
7445 Fixed a reported problem where an object stored to a Method Local
7446 or Arg was not copied to a new object during the store - the
7447 object pointer was simply copied to the Local/Arg. This caused
7448 all subsequent operations on the Local/Arg to also affect the
7449 original source of the store operation.
7451 Fixed a problem where a store operation to a Method Local or Arg
7452 was not completed properly if the Local/Arg contained a reference
7453 (from RefOf) to a named field. The general-purpose store-to-
7454 namespace-node code is now used so that this case is handled
7457 Fixed a problem where the internal object copy routine would cause
7458 a protection fault if the object being copied was a Package and
7459 contained either 1) a NULL package element or 2) a nested sub-
7462 Fixed a problem with the GPE initialization that resulted from an
7463 ambiguity in the ACPI specification. One section of the
7464 specification states that both the address and length of the GPE
7465 block must be zero if the block is not supported. Another section
7466 implies that only the address need be zero if the block is not
7467 supported. The code has been changed so that both the address and
7468 the length must be non-zero to indicate a valid GPE block (i.e.,
7469 if either the address or the length is zero, the GPE block is
7472 Code and Data Size: Current core subsystem library sizes are shown
7473 below. These are the code and data sizes for the acpica.lib
7474 produced by the Microsoft Visual C++ 6.0 compiler, and these
7475 values do not include any ACPI driver or OSPM code. The debug
7476 version of the code includes the debug output trace mechanism and
7477 has a much larger code and data size. Note that these values will
7478 vary depending on the efficiency of the compiler and the compiler
7479 options used during generation.
7482 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
7483 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
7485 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
7486 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
7491 Cleaned up EC driver. Exported an external EC read/write
7492 interface. By going through this, other drivers (most notably
7493 sonypi) will be able to serialize access to the EC.
7496 3) iASL Compiler/Disassembler
7498 Implemented support to optionally generate include files for both
7499 ASM and C (the -i switch). This simplifies BIOS development by
7500 automatically creating include files that contain external
7501 declarations for the symbols that are created within the
7503 (optionally generated) ASM and C AML source files.
7506 ----------------------------------------
7507 15 November 2002. Summary of changes for version 20021115.
7509 1) ACPI CA Core Subsystem:
7511 Fixed a memory leak problem where an error during resolution of
7513 method arguments during a method invocation from another method
7514 failed to cleanup properly by deleting all successfully resolved
7517 Fixed a problem where the target of the Index() operator was not
7518 correctly constructed if the source object was a package. This
7519 problem has not been detected because the use of a target operand
7520 with Index() is very rare.
7522 Fixed a problem with the Index() operator where an attempt was
7523 made to delete the operand objects twice.
7525 Fixed a problem where an attempt was made to delete an operand
7526 twice during execution of the CondRefOf() operator if the target
7529 Implemented the first of perhaps several internal create object
7530 functions that create and initialize a specific object type. This
7531 consolidates duplicated code wherever the object is created, thus
7532 shrinking the size of the subsystem.
7534 Implemented improved debug/error messages for errors that occur
7535 during nested method invocations. All executing method pathnames
7536 are displayed (with the error) as the call stack is unwound - thus
7539 Fixed a problem introduced in the 10/02 release that caused
7540 premature deletion of a buffer object if a buffer was used as an
7541 ASL operand where an integer operand is required (Thus causing an
7542 implicit object conversion from Buffer to Integer.) The change in
7543 the 10/02 release was attempting to fix a memory leak (albeit
7546 Code and Data Size: Current core subsystem library sizes are shown
7547 below. These are the code and data sizes for the acpica.lib
7548 produced by the Microsoft Visual C++ 6.0 compiler, and these
7549 values do not include any ACPI driver or OSPM code. The debug
7550 version of the code includes the debug output trace mechanism and
7551 has a much larger code and data size. Note that these values will
7552 vary depending on the efficiency of the compiler and the compiler
7553 options used during generation.
7556 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
7557 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
7559 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
7560 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
7565 Changed the implementation of the ACPI semaphores to use down()
7566 instead of down_interruptable(). It is important that the
7567 execution of ACPI control methods not be interrupted by signals.
7568 Methods must run to completion, or the system may be left in an
7569 unknown/unstable state.
7571 Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set.
7575 3) iASL Compiler/Disassembler
7578 Changed the default location of output files. All output files
7579 are now placed in the current directory by default instead of in
7580 the directory of the source file. This change may affect some
7581 existing makefiles, but it brings the behavior of the compiler in
7582 line with other similar tools. The location of the output files
7583 can be overridden with the -p command line switch.
7586 ----------------------------------------
7587 11 November 2002. Summary of changes for version 20021111.
7590 0) ACPI Specification 2.0B is released and is now available at:
7591 http://www.acpi.info/index.html
7594 1) ACPI CA Core Subsystem:
7596 Implemented support for the ACPI 2.0 SMBus Operation Regions.
7597 This includes the early detection and handoff of the request to
7598 the SMBus region handler (avoiding all of the complex field
7599 support code), and support for the bidirectional return packet
7600 from an SMBus write operation. This paves the way for the
7601 development of SMBus drivers in each host operating system.
7603 Fixed a problem where the semaphore WAIT_FOREVER constant was
7604 defined as 32 bits, but must be 16 bits according to the ACPI
7605 specification. This had the side effect of causing ASL
7606 Mutex/Event timeouts even though the ASL code requested a wait
7607 forever. Changed all internal references to the ACPI timeout
7608 parameter to 16 bits to prevent future problems. Changed the name
7609 of WAIT_FOREVER to ACPI_WAIT_FOREVER.
7611 Code and Data Size: Current core subsystem library sizes are shown
7612 below. These are the code and data sizes for the acpica.lib
7613 produced by the Microsoft Visual C++ 6.0 compiler, and these
7614 values do not include any ACPI driver or OSPM code. The debug
7615 version of the code includes the debug output trace mechanism and
7616 has a much larger code and data size. Note that these values will
7617 vary depending on the efficiency of the compiler and the compiler
7618 options used during generation.
7621 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
7622 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
7624 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
7625 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
7630 Module loading/unloading fixes (John Cagle)
7633 3) iASL Compiler/Disassembler
7635 Added support for the SMBBlockProcessCall keyword (ACPI 2.0)
7637 Implemented support for the disassembly of all SMBus protocol
7638 keywords (SMBQuick, SMBWord, etc.)
7640 ----------------------------------------
7641 01 November 2002. Summary of changes for version 20021101.
7644 1) ACPI CA Core Subsystem:
7646 Fixed a problem where platforms that have a GPE1 block but no GPE0
7647 block were not handled correctly. This resulted in a "GPE
7648 overlap" error message. GPE0 is no longer required.
7650 Removed code added in the previous release that inserted nodes
7651 into the namespace in alphabetical order. This caused some side-
7652 effects on various machines. The root cause of the problem is
7653 still under investigation since in theory, the internal ordering
7654 of the namespace nodes should not matter.
7657 Enhanced error reporting for the case where a named object is not
7658 found during control method execution. The full ACPI namepath
7659 (name reference) of the object that was not found is displayed in
7662 Note: as a result of the overhaul of the namespace object types in
7663 the previous release, the namespace nodes for the predefined
7664 scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE
7665 instead of ACPI_TYPE_ANY. This simplifies the namespace
7666 management code but may affect code that walks the namespace tree
7667 looking for specific object types.
7669 Code and Data Size: Current core subsystem library sizes are shown
7670 below. These are the code and data sizes for the acpica.lib
7671 produced by the Microsoft Visual C++ 6.0 compiler, and these
7672 values do not include any ACPI driver or OSPM code. The debug
7673 version of the code includes the debug output trace mechanism and
7674 has a much larger code and data size. Note that these values will
7675 vary depending on the efficiency of the compiler and the compiler
7676 options used during generation.
7679 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
7680 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
7682 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
7683 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
7688 Fixed a problem introduced in the previous release where the
7689 Processor and Thermal objects were not recognized and installed in
7690 /proc. This was related to the scope type change described above.
7693 3) iASL Compiler/Disassembler
7695 Implemented the -g option to get all of the required ACPI tables
7696 from the registry and save them to files (Windows version of the
7697 compiler only.) The required tables are the FADT, FACS, and DSDT.
7699 Added ACPI table checksum validation during table disassembly in
7700 order to catch corrupted tables.
7703 ----------------------------------------
7704 22 October 2002. Summary of changes for version 20021022.
7706 1) ACPI CA Core Subsystem:
7708 Implemented a restriction on the Scope operator that the target
7709 must already exist in the namespace at the time the operator is
7710 encountered (during table load or method execution). In other
7711 words, forward references are not allowed and Scope() cannot
7712 create a new object. This changes the previous behavior where the
7713 interpreter would create the name if not found. This new behavior
7714 correctly enables the search-to-root algorithm during namespace
7715 lookup of the target name. Because of this upsearch, this fixes
7716 the known Compaq _SB_.OKEC problem and makes both the AML
7717 interpreter and iASL compiler compatible with other ACPI
7720 Completed a major overhaul of the internal ACPI object types for
7721 the ACPI Namespace and the associated operand objects. Many of
7722 these types had become obsolete with the introduction of the two-
7723 pass namespace load. This cleanup simplifies the code and makes
7724 the entire namespace load mechanism much clearer and easier to
7727 Improved debug output for tracking scope opening/closing to help
7728 diagnose scoping issues. The old scope name as well as the new
7729 scope name are displayed. Also improved error messages for
7730 problems with ASL Mutex objects and error messages for GPE
7733 Cleaned up the namespace dump code, removed obsolete code.
7735 All string output (for all namespace/object dumps) now uses the
7736 common ACPI string output procedure which handles escapes properly
7737 and does not emit non-printable characters.
7739 Fixed some issues with constants in the 64-bit version of the
7740 local C library (utclib.c)
7745 EC Driver: No longer attempts to acquire the Global Lock at
7749 3) iASL Compiler/Disassembler
7751 Implemented ACPI 2.0B grammar change that disallows all Type 1 and
7752 2 opcodes outside of a control method. This means that the
7753 "executable" operators (versus the "namespace" operators) cannot
7754 be used at the table level; they can only be used within a control
7757 Implemented the restriction on the Scope() operator where the
7758 target must already exist in the namespace at the time the
7759 operator is encountered (during ASL compilation). In other words,
7760 forward references are not allowed and Scope() cannot create a new
7761 object. This makes the iASL compiler compatible with other ACPI
7762 implementations and makes the Scope() implementation adhere to the
7765 Fixed a problem where namepath optimization for the Alias operator
7766 was optimizing the wrong path (of the two namepaths.) This caused
7767 a "Missing alias link" error message.
7769 Fixed a problem where an "unknown reserved name" warning could be
7770 incorrectly generated for names like "_SB" when the trailing
7771 underscore is not used in the original ASL.
7773 Fixed a problem where the reserved name check did not handle
7774 NamePaths with multiple NameSegs correctly. The first nameseg of
7775 the NamePath was examined instead of the last NameSeg.
7778 ----------------------------------------
7780 02 October 2002. Summary of changes for this release.
7783 1) ACPI CA Core Subsystem version 20021002:
7785 Fixed a problem where a store/copy of a string to an existing
7786 string did not always set the string length properly in the String
7789 Fixed a reported problem with the ToString operator where the
7790 behavior was identical to the ToHexString operator instead of just
7791 simply converting a raw buffer to a string data type.
7793 Fixed a problem where CopyObject and the other "explicit"
7794 conversion operators were not updating the internal namespace node
7795 type as part of the store operation.
7797 Fixed a memory leak during implicit source operand conversion
7798 where the original object was not deleted if it was converted to a
7799 new object of a different type.
7801 Enhanced error messages for all problems associated with namespace
7802 lookups. Common procedure generates and prints the lookup name as
7803 well as the formatted status.
7805 Completed implementation of a new design for the Alias support
7806 within the namespace. The existing design did not handle the case
7807 where a new object was assigned to one of the two names due to the
7808 use of an explicit conversion operator, resulting in the two names
7809 pointing to two different objects. The new design simply points
7810 the Alias name to the original name node - not to the object.
7811 This results in a level of indirection that must be handled in the
7812 name resolution mechanism.
7814 Code and Data Size: Current core subsystem library sizes are shown
7815 below. These are the code and data sizes for the acpica.lib
7816 produced by the Microsoft Visual C++ 6.0 compiler, and these
7817 values do not include any ACPI driver or OSPM code. The debug
7818 version of the code includes the debug output trace mechanism and
7819 has a larger code and data size. Note that these values will vary
7820 depending on the efficiency of the compiler and the compiler
7821 options used during generation.
7824 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
7825 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
7827 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
7828 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
7833 Initialize thermal driver's timer before it is used. (Knut
7836 Allow handling negative celsius values. (Kochi Takayoshi)
7838 Fix thermal management and make trip points. R/W (Pavel Machek)
7840 Fix /proc/acpi/sleep. (P. Christeas)
7842 IA64 fixes. (David Mosberger)
7844 Fix reversed logic in blacklist code. (Sergio Monteiro Basto)
7846 Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik
7850 3) iASL Compiler/Disassembler
7852 Clarified some warning/error messages.
7855 ----------------------------------------
7856 18 September 2002. Summary of changes for this release.
7859 1) ACPI CA Core Subsystem version 20020918:
7861 Fixed a reported problem with reference chaining (via the Index()
7862 and RefOf() operators) in the ObjectType() and SizeOf() operators.
7863 The definition of these operators includes the dereferencing of
7864 all chained references to return information on the base object.
7866 Fixed a problem with stores to indexed package elements - the
7867 existing code would not complete the store if an "implicit
7868 conversion" was not performed. In other words, if the existing
7869 object (package element) was to be replaced completely, the code
7870 didn't handle this case.
7872 Relaxed typechecking on the ASL "Scope" operator to allow the
7873 target name to refer to an object of type Integer, String, or
7874 Buffer, in addition to the scoping object types (Device,
7875 predefined Scopes, Processor, PowerResource, and ThermalZone.)
7876 This allows existing AML code that has workarounds for a bug in
7877 Windows to function properly. A warning is issued, however. This
7878 affects both the AML interpreter and the iASL compiler. Below is
7879 an example of this type of ASL code:
7885 Fixed some reported problems with 64-bit integer support in the
7886 local implementation of C library functions (clib.c)
7891 Use ACPI fix map region instead of IOAPIC region, since it is
7892 undefined in non-SMP.
7894 Ensure that the SCI has the proper polarity and trigger, even on
7895 systems that do not have an interrupt override entry in the MADT.
7897 2.5 big driver reorganization (Pat Mochel)
7899 Use early table mapping code from acpitable.c (Andi Kleen)
7901 New blacklist entries (Andi Kleen)
7903 Blacklist improvements. Split blacklist code out into a separate
7904 file. Move checking the blacklist to very early. Previously, we
7905 would use ACPI tables, and then halfway through init, check the
7906 blacklist -- too late. Now, it's early enough to completely fall-
7910 3) iASL Compiler/Disassembler version 20020918:
7912 Fixed a problem where the typechecking code didn't know that an
7913 alias could point to a method. In other words, aliases were not
7914 being dereferenced during typechecking.
7917 ----------------------------------------
7918 29 August 2002. Summary of changes for this release.
7920 1) ACPI CA Core Subsystem Version 20020829:
7922 If the target of a Scope() operator already exists, it must be an
7923 object type that actually opens a scope -- such as a Device,
7924 Method, Scope, etc. This is a fatal runtime error. Similar error
7925 check has been added to the iASL compiler also.
7927 Tightened up the namespace load to disallow multiple names in the
7928 same scope. This previously was allowed if both objects were of
7929 the same type. (i.e., a lookup was the same as entering a new
7935 Ensure that the ACPI interrupt has the proper trigger and
7938 local_irq_disable is extraneous. (Matthew Wilcox)
7940 Make "acpi=off" actually do what it says, and not use the ACPI
7941 interpreter *or* the tables.
7943 Added arch-neutral support for parsing SLIT and SRAT tables (Kochi
7947 3) iASL Compiler/Disassembler Version 20020829:
7949 Implemented namepath optimization for name declarations. For
7950 example, a declaration like "Method (\_SB_.ABCD)" would get
7951 optimized to "Method (ABCD)" if the declaration is within the
7952 \_SB_ scope. This optimization is in addition to the named
7953 reference path optimization first released in the previous
7954 version. This would seem to complete all possible optimizations
7955 for namepaths within the ASL/AML.
7957 If the target of a Scope() operator already exists, it must be an
7958 object type that actually opens a scope -- such as a Device,
7961 Implemented a check and warning for unreachable code in the same
7962 block below a Return() statement.
7964 Fixed a problem where the listing file was not generated if the
7965 compiler aborted if the maximum error count was exceeded (200).
7967 Fixed a problem where the typechecking of method return values was
7968 broken. This includes the check for a return value when the
7969 method is invoked as a TermArg (a return value is expected.)
7971 Fixed a reported problem where EOF conditions during a quoted
7972 string or comment caused a fault.
7975 ----------------------------------------
7976 15 August 2002. Summary of changes for this release.
7978 1) ACPI CA Core Subsystem Version 20020815:
7980 Fixed a reported problem where a Store to a method argument that
7981 contains a reference did not perform the indirect store correctly.
7982 This problem was created during the conversion to the new
7983 reference object model - the indirect store to a method argument
7984 code was not updated to reflect the new model.
7986 Reworked the ACPI mode change code to better conform to ACPI 2.0,
7987 handle corner cases, and improve code legibility (Kochi Takayoshi)
7989 Fixed a problem with the pathname parsing for the carat (^)
7990 prefix. The heavy use of the carat operator by the new namepath
7991 optimization in the iASL compiler uncovered a problem with the AML
7992 interpreter handling of this prefix. In the case where one or
7993 more carats precede a single nameseg, the nameseg was treated as
7994 standalone and the search rule (to root) was inadvertently
7995 applied. This could cause both the iASL compiler and the
7996 interpreter to find the wrong object or to miss the error that
7997 should occur if the object does not exist at that exact pathname.
7999 Found and fixed the problem where the HP Pavilion DSDT would not
8000 load. This was a relatively minor tweak to the table loading code
8001 (a problem caused by the unexpected encounter with a method
8002 invocation not within a control method), but it does not solve the
8003 overall issue of the execution of AML code at the table level.
8004 This investigation is still ongoing.
8006 Code and Data Size: Current core subsystem library sizes are shown
8007 below. These are the code and data sizes for the acpica.lib
8008 produced by the Microsoft Visual C++ 6.0 compiler, and these
8009 values do not include any ACPI driver or OSPM code. The debug
8010 version of the code includes the debug output trace mechanism and
8011 has a larger code and data size. Note that these values will vary
8012 depending on the efficiency of the compiler and the compiler
8013 options used during generation.
8016 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
8017 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
8019 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
8020 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
8025 Remove redundant slab.h include (Brad Hards)
8027 Fix several bugs in thermal.c (Herbert Nachtnebel)
8029 Make CONFIG_ACPI_BOOT work properly (Pavel Machek)
8031 Change acpi_system_suspend to use updated irq functions (Pavel
8034 Export acpi_get_firmware_table (Matthew Wilcox)
8036 Use proper root proc entry for ACPI (Kochi Takayoshi)
8038 Fix early-boot table parsing (Bjorn Helgaas)
8041 3) iASL Compiler/Disassembler
8043 Reworked the compiler options to make them more consistent and to
8044 use two-letter options where appropriate. We were running out of
8045 sensible letters. This may break some makefiles, so check the
8046 current options list by invoking the compiler with no parameters.
8048 Completed the design and implementation of the ASL namepath
8049 optimization option for the compiler. This option optimizes all
8050 references to named objects to the shortest possible path. The
8051 first attempt tries to utilize a single nameseg (4 characters) and
8052 the "search-to-root" algorithm used by the interpreter. If that
8053 cannot be used (because either the name is not in the search path
8054 or there is a conflict with another object with the same name),
8055 the pathname is optimized using the carat prefix (usually a
8056 shorter string than specifying the entire path from the root.)
8058 Implemented support to obtain the DSDT from the Windows registry
8059 (when the disassembly option is specified with no input file).
8060 Added this code as the implementation for AcpiOsTableOverride in
8061 the Windows OSL. Migrated the 16-bit code (used in the AcpiDump
8062 utility) to scan memory for the DSDT to the AcpiOsTableOverride
8063 function in the DOS OSL to make the disassembler truly OS
8066 Implemented a new option to disassemble and compile in one step.
8067 When used without an input filename, this option will grab the
8068 DSDT from the local machine, disassemble it, and compile it in one
8071 Added a warning message for invalid escapes (a backslash followed
8072 by any character other than the allowable escapes). This catches
8073 the quoted string error "\_SB_" (which should be "\\_SB_" ).
8075 Also, there are numerous instances in the ACPI specification where
8078 Added a compiler option to disable all optimizations. This is
8079 basically the "compatibility mode" because by using this option,
8080 the AML code will come out exactly the same as other ASL
8083 Added error messages for incorrectly ordered dependent resource
8084 functions. This includes: missing EndDependentFn macro at end of
8085 dependent resource list, nested dependent function macros (both
8086 start and end), and missing StartDependentFn macro. These are
8087 common errors that should be caught at compile time.
8089 Implemented _OSI support for the disassembler and compiler. _OSI
8090 must be included in the namespace for proper disassembly (because
8091 the disassembler must know the number of arguments.)
8093 Added an "optimization" message type that is optional (off by
8094 default). This message is used for all optimizations - including
8095 constant folding, integer optimization, and namepath optimization.
8097 ----------------------------------------
8098 25 July 2002. Summary of changes for this release.
8101 1) ACPI CA Core Subsystem Version 20020725:
8103 The AML Disassembler has been enhanced to produce compilable ASL
8104 code and has been integrated into the iASL compiler (see below) as
8105 well as the single-step disassembly for the AML debugger and the
8106 disassembler for the AcpiDump utility. All ACPI 2.0A opcodes,
8107 resource templates and macros are fully supported. The
8108 disassembler has been tested on over 30 different AML files,
8109 producing identical AML when the resulting disassembled ASL file
8110 is recompiled with the same ASL compiler.
8112 Modified the Resource Manager to allow zero interrupts and zero
8113 dma channels during the GetCurrentResources call. This was
8114 causing problems on some platforms.
8116 Added the AcpiOsRedirectOutput interface to the OSL to simplify
8117 output redirection for the AcpiOsPrintf and AcpiOsVprintf
8120 Code and Data Size: Current core subsystem library sizes are shown
8121 below. These are the code and data sizes for the acpica.lib
8122 produced by the Microsoft Visual C++ 6.0 compiler, and these
8123 values do not include any ACPI driver or OSPM code. The debug
8124 version of the code includes the debug output trace mechanism and
8125 has a larger code and data size. Note that these values will vary
8126 depending on the efficiency of the compiler and the compiler
8127 options used during generation.
8130 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
8131 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
8133 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
8134 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
8139 Fixed a panic in the EC driver (Dominik Brodowski)
8141 Implemented checksum of the R/XSDT itself during Linux table scan
8147 The AML disassembler is integrated into the compiler. The "-d"
8148 option invokes the disassembler to completely disassemble an
8149 input AML file, producing as output a text ASL file with the
8150 extension ".dsl" (to avoid name collisions with existing .asl
8151 source files.) A future enhancement will allow the disassembler
8152 to obtain the BIOS DSDT from the registry under Windows.
8154 Fixed a problem with the VendorShort and VendorLong resource
8155 descriptors where an invalid AML sequence was created.
8157 Implemented a fix for BufferData term in the ASL parser. It was
8158 inadvertently defined twice, allowing invalid syntax to pass and
8159 causing reduction conflicts.
8161 Fixed a problem where the Ones opcode could get converted to a
8162 value of zero if "Ones" was used where a byte, word or dword value
8163 was expected. The 64-bit value is now truncated to the correct
8164 size with the correct value.
8168 ----------------------------------------
8169 02 July 2002. Summary of changes for this release.
8172 1) ACPI CA Core Subsystem Version 20020702:
8174 The Table Manager code has been restructured to add several new
8175 features. Tables that are not required by the core subsystem
8176 (other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer
8177 validated in any way and are returned from AcpiGetFirmwareTable if
8178 requested. The AcpiOsTableOverride interface is now called for
8179 each table that is loaded by the subsystem in order to allow the
8180 host to override any table it chooses. Previously, only the DSDT
8181 could be overridden. Added one new files, tbrsdt.c and
8184 Fixed a problem with the conversion of internal package objects to
8185 external objects (when a package is returned from a control
8186 method.) The return buffer length was set to zero instead of the
8187 proper length of the package object.
8189 Fixed a reported problem with the use of the RefOf and DeRefOf
8190 operators when passing reference arguments to control methods. A
8191 new type of Reference object is used internally for references
8192 produced by the RefOf operator.
8194 Added additional error messages in the Resource Manager to explain
8195 AE_BAD_DATA errors when they occur during resource parsing.
8197 Split the AcpiEnableSubsystem into two primitives to enable a
8198 finer granularity initialization sequence. These two calls should
8199 be called in this order: AcpiEnableSubsystem (flags),
8200 AcpiInitializeObjects (flags). The flags parameter remains the
8206 Updated the ACPI utilities module to understand the new style of
8207 fully resolved package objects that are now returned from the core
8208 subsystem. This eliminates errors of the form:
8210 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT]
8211 acpi_utils-0430 [145] acpi_evaluate_reference:
8212 Invalid element in package (not a device reference)
8214 The method evaluation utility uses the new buffer allocation
8215 scheme instead of calling AcpiEvaluate Object twice.
8217 Added support for ECDT. This allows the use of the Embedded
8219 Controller before the namespace has been fully initialized, which
8220 is necessary for ACPI 2.0 support, and for some laptops to
8221 initialize properly. (Laptops using ECDT are still rare, so only
8222 limited testing was performed of the added functionality.)
8224 Fixed memory leaks in the EC driver.
8226 Eliminated a brittle code structure in acpi_bus_init().
8228 Eliminated the acpi_evaluate() helper function in utils.c. It is
8229 no longer needed since acpi_evaluate_object can optionally
8230 allocate memory for the return object.
8232 Implemented fix for keyboard hang when getting battery readings on
8233 some systems (Stephen White)
8235 PCI IRQ routing update (Dominik Brodowski)
8237 Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC
8240 ----------------------------------------
8241 11 June 2002. Summary of changes for this release.
8244 1) ACPI CA Core Subsystem Version 20020611:
8246 Fixed a reported problem where constants such as Zero and One
8247 appearing within _PRT packages were not handled correctly within
8248 the resource manager code. Originally reported against the ASL
8249 compiler because the code generator now optimizes integers to
8250 their minimal AML representation (i.e. AML constants if possible.)
8251 The _PRT code now handles all AML constant opcodes correctly
8252 (Zero, One, Ones, Revision).
8254 Fixed a problem with the Concatenate operator in the AML
8255 interpreter where a buffer result object was incorrectly marked as
8256 not fully evaluated, causing a run-time error of AE_AML_INTERNAL.
8258 All package sub-objects are now fully resolved before they are
8259 returned from the external ACPI interfaces. This means that name
8260 strings are resolved to object handles, and constant operators
8261 (Zero, One, Ones, Revision) are resolved to Integers.
8263 Implemented immediate resolution of the AML Constant opcodes
8264 (Zero, One, Ones, Revision) to Integer objects upon detection
8265 within the AML stream. This has simplified and reduced the
8266 generated code size of the subsystem by eliminating about 10
8267 switch statements for these constants (which previously were
8268 contained in Reference objects.) The complicating issues are that
8269 the Zero opcode is used as a "placeholder" for unspecified
8270 optional target operands and stores to constants are defined to be
8273 Code and Data Size: Current core subsystem library sizes are shown
8274 below. These are the code and data sizes for the acpica.lib
8275 produced by the Microsoft Visual C++ 6.0 compiler, and these
8276 values do not include any ACPI driver or OSPM code. The debug
8277 version of the code includes the debug output trace mechanism and
8278 has a larger code and data size. Note that these values will vary
8279 depending on the efficiency of the compiler and the compiler
8280 options used during generation.
8283 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
8284 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
8286 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
8287 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
8293 Added preliminary support for obtaining _TRA data for PCI root
8294 bridges (Bjorn Helgaas).
8297 3) iASL Compiler Version X2046:
8299 Fixed a problem where the "_DDN" reserved name was defined to be a
8300 control method with one argument. There are no arguments, and
8301 _DDN does not have to be a control method.
8303 Fixed a problem with the Linux version of the compiler where the
8304 source lines printed with error messages were the wrong lines.
8305 This turned out to be the "LF versus CR/LF" difference between
8306 Windows and Unix. This appears to be the longstanding issue
8307 concerning listing output and error messages.
8309 Fixed a problem with the Linux version of compiler where opcode
8310 names within error messages were wrong. This was caused by a
8311 slight difference in the output of the Flex tool on Linux versus
8314 Fixed a problem with the Linux compiler where the hex output files
8315 contained some garbage data caused by an internal buffer overrun.
8318 ----------------------------------------
8319 17 May 2002. Summary of changes for this release.
8322 1) ACPI CA Core Subsystem Version 20020517:
8324 Implemented a workaround to an BIOS bug discovered on the HP
8325 OmniBook where the FADT revision number and the table size are
8326 inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new
8327 behavior is to fallback to using only the ACPI 1.0 fields of the
8328 FADT if the table is too small to be a ACPI 2.0 table as claimed
8329 by the revision number. Although this is a BIOS bug, this is a
8330 case where the workaround is simple enough and with no side
8331 effects, so it seemed prudent to add it. A warning message is
8334 Implemented minimum size checks for the fixed-length ACPI tables -
8335 - the FADT and FACS, as well as consistency checks between the
8336 revision number and the table size.
8338 Fixed a reported problem in the table override support where the
8339 new table pointer was incorrectly treated as a physical address
8340 instead of a logical address.
8342 Eliminated the use of the AE_AML_ERROR exception and replaced it
8343 with more descriptive codes.
8345 Fixed a problem where an exception would occur if an ASL Field was
8346 defined with no named Field Units underneath it (used by some
8349 Code and Data Size: Current core subsystem library sizes are shown
8350 below. These are the code and data sizes for the acpica.lib
8351 produced by the Microsoft Visual C++ 6.0 compiler, and these
8352 values do not include any ACPI driver or OSPM code. The debug
8353 version of the code includes the debug output trace mechanism and
8354 has a larger code and data size. Note that these values will vary
8355 depending on the efficiency of the compiler and the compiler
8356 options used during generation.
8359 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
8360 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
8362 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
8363 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
8369 Much work done on ACPI init (MADT and PCI IRQ routing support).
8370 (Paul D. and Dominik Brodowski)
8372 Fix PCI IRQ-related panic on boot (Sam Revitch)
8374 Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno)
8376 Fix "MHz" typo (Dominik Brodowski)
8378 Fix RTC year 2000 issue (Dominik Brodowski)
8380 Preclude multiple button proc entries (Eric Brunet)
8382 Moved arch-specific code out of include/platform/aclinux.h
8384 3) iASL Compiler Version X2044:
8386 Implemented error checking for the string used in the EISAID macro
8387 (Usually used in the definition of the _HID object.) The code now
8388 strictly enforces the PnP format - exactly 7 characters, 3
8389 uppercase letters and 4 hex digits.
8391 If a raw string is used in the definition of the _HID object
8392 (instead of the EISAID macro), the string must contain all
8393 alphanumeric characters (e.g., "*PNP0011" is not allowed because
8396 Implemented checking for invalid use of ACPI reserved names for
8397 most of the name creation operators (Name, Device, Event, Mutex,
8398 OperationRegion, PowerResource, Processor, and ThermalZone.)
8399 Previously, this check was only performed for control methods.
8401 Implemented an additional check on the Name operator to emit an
8402 error if a reserved name that must be implemented in ASL as a
8403 control method is used. We know that a reserved name must be a
8404 method if it is defined with input arguments.
8406 The warning emitted when a namespace object reference is not found
8407 during the cross reference phase has been changed into an error.
8408 The "External" directive should be used for names defined in other
8412 4) Tools and Utilities
8414 The 16-bit tools (adump16 and aexec16) have been regenerated and
8417 Fixed a problem with the output of both acpidump and adump16 where
8418 the indentation of closing parentheses and brackets was not
8420 aligned properly with the parent block.
8423 ----------------------------------------
8424 03 May 2002. Summary of changes for this release.
8427 1) ACPI CA Core Subsystem Version 20020503:
8429 Added support a new OSL interface that allows the host operating
8431 system software to override the DSDT found in the firmware -
8432 AcpiOsTableOverride. With this interface, the OSL can examine the
8433 version of the firmware DSDT and replace it with a different one
8436 Added new external interfaces for accessing ACPI registers from
8437 device drivers and other system software - AcpiGetRegister and
8438 AcpiSetRegister. This was simply an externalization of the
8439 existing AcpiHwBitRegister interfaces.
8441 Fixed a regression introduced in the previous build where the
8442 ASL/AML CreateField operator always returned an error,
8443 "destination must be a NS Node".
8445 Extended the maximum time (before failure) to successfully enable
8446 ACPI mode to 3 seconds.
8448 Code and Data Size: Current core subsystem library sizes are shown
8449 below. These are the code and data sizes for the acpica.lib
8450 produced by the Microsoft Visual C++ 6.0 compiler, and these
8451 values do not include any ACPI driver or OSPM code. The debug
8452 version of the code includes the debug output trace mechanism and
8453 has a larger code and data size. Note that these values will vary
8454 depending on the efficiency of the compiler and the compiler
8455 options used during generation.
8458 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
8459 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
8461 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
8462 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
8467 Enhanced ACPI init code for SMP. We are now fully MPS and $PIR-
8468 free. While 3 out of 4 of our in-house systems work fine, the last
8469 one still hangs when testing the LAPIC timer.
8471 Renamed many files in 2.5 kernel release to omit "acpi_" from the
8474 Added warning on boot for Presario 711FR.
8476 Sleep improvements (Pavel Machek)
8478 ACPI can now be built without CONFIG_PCI enabled.
8480 IA64: Fixed memory map functions (JI Lee)
8483 3) iASL Compiler Version X2043:
8485 Added support to allow the compiler to be integrated into the MS
8486 VC++ development environment for one-button compilation of single
8487 files or entire projects -- with error-to-source-line mapping.
8489 Implemented support for compile-time constant folding for the
8490 Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0
8491 specification. This allows the ASL writer to use expressions
8492 instead of Integer/Buffer/String constants in terms that must
8493 evaluate to constants at compile time and will also simplify the
8494 emitted AML in any such sub-expressions that can be folded
8495 (evaluated at compile-time.) This increases the size of the
8496 compiler significantly because a portion of the ACPI CA AML
8497 interpreter is included within the compiler in order to pre-
8498 evaluate constant expressions.
8501 Fixed a problem with the "Unicode" ASL macro that caused the
8502 compiler to fault. (This macro is used in conjunction with the
8503 _STR reserved name.)
8505 Implemented an AML opcode optimization to use the Zero, One, and
8506 Ones opcodes where possible to further reduce the size of integer
8507 constants and thus reduce the overall size of the generated AML
8510 Implemented error checking for new reserved terms for ACPI version
8513 Implemented the -qr option to display the current list of ACPI
8514 reserved names known to the compiler.
8516 Implemented the -qc option to display the current list of ASL
8517 operators that are allowed within constant expressions and can
8518 therefore be folded at compile time if the operands are constants.
8523 Updated the Programmer's Reference for new interfaces, data types,
8524 and memory allocation model options.
8526 Updated the iASL Compiler User Reference to apply new format and
8527 add information about new features and options.
8529 ----------------------------------------
8530 19 April 2002. Summary of changes for this release.
8532 1) ACPI CA Core Subsystem Version 20020419:
8534 The source code base for the Core Subsystem has been completely
8535 cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit
8536 versions. The Lint option files used are included in the
8537 /acpi/generate/lint directory.
8539 Implemented enhanced status/error checking across the entire
8540 Hardware manager subsystem. Any hardware errors (reported from
8541 the OSL) are now bubbled up and will abort a running control
8545 Fixed a problem where the per-ACPI-table integer width (32 or 64)
8546 was stored only with control method nodes, causing a fault when
8547 non-control method code was executed during table loading. The
8548 solution implemented uses a global variable to indicate table
8549 width across the entire ACPI subsystem. Therefore, ACPI CA does
8550 not support mixed integer widths across different ACPI tables
8553 Fixed a problem where NULL extended fields (X fields) in an ACPI
8554 2.0 ACPI FADT caused the table load to fail. Although the
8555 existing ACPI specification is a bit fuzzy on this topic, the new
8556 behavior is to fall back on a ACPI 1.0 field if the corresponding
8557 ACPI 2.0 X field is zero (even though the table revision indicates
8558 a full ACPI 2.0 table.) The ACPI specification will be updated to
8561 Fixed a problem with the SystemMemory operation region handler
8562 where memory was always accessed byte-wise even if the AML-
8563 specified access width was larger than a byte. This caused
8564 problems on systems with memory-mapped I/O. Memory is now
8565 accessed with the width specified. On systems that do not support
8566 non-aligned transfers, a check is made to guarantee proper address
8567 alignment before proceeding in order to avoid an AML-caused
8568 alignment fault within the kernel.
8571 Fixed a problem with the ExtendedIrq resource where only one byte
8572 of the 4-byte Irq field was extracted.
8574 Fixed the AcpiExDigitsNeeded() procedure to support _UID. This
8575 function was out of date and required a rewrite.
8577 Code and Data Size: Current core subsystem library sizes are shown
8578 below. These are the code and data sizes for the acpica.lib
8579 produced by the Microsoft Visual C++ 6.0 compiler, and these
8580 values do not include any ACPI driver or OSPM code. The debug
8581 version of the code includes the debug output trace mechanism and
8582 has a larger code and data size. Note that these values will vary
8583 depending on the efficiency of the compiler and the compiler
8584 options used during generation.
8587 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
8588 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
8590 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
8591 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
8596 PCI IRQ routing fixes (Dominik Brodowski)
8599 3) iASL Compiler Version X2042:
8601 Implemented an additional compile-time error check for a field
8602 unit whose size + minimum access width would cause a run-time
8603 access beyond the end-of-region. Previously, only the field size
8606 The Core subsystem and iASL compiler now share a common parse
8607 object in preparation for compile-time evaluation of the type
8608 3/4/5 ASL operators.
8611 ----------------------------------------
8612 Summary of changes for this release: 03_29_02
8614 1) ACPI CA Core Subsystem Version 20020329:
8616 Implemented support for late evaluation of TermArg operands to
8617 Buffer and Package objects. This allows complex expressions to be
8618 used in the declarations of these object types.
8620 Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI
8621 1.0, if the field was larger than 32 bits, it was returned as a
8622 buffer - otherwise it was returned as an integer. In ACPI 2.0,
8623 the field is returned as a buffer only if the field is larger than
8624 64 bits. The TableRevision is now considered when making this
8625 conversion to avoid incompatibility with existing ASL code.
8627 Implemented logical addressing for AcpiOsGetRootPointer. This
8628 allows an RSDP with either a logical or physical address. With
8629 this support, the host OS can now override all ACPI tables with
8630 one logical RSDP. Includes implementation of "typed" pointer
8631 support to allow a common data type for both physical and logical
8632 pointers internally. This required a change to the
8633 AcpiOsGetRootPointer interface.
8635 Implemented the use of ACPI 2.0 Generic Address Structures for all
8636 GPE, Fixed Event, and PM Timer I/O. This allows the use of memory
8637 mapped I/O for these ACPI features.
8639 Initialization now ignores not only non-required tables (All
8640 tables other than the FADT, FACS, DSDT, and SSDTs), but also does
8641 not validate the table headers of unrecognized tables.
8643 Fixed a problem where a notify handler could only be
8644 installed/removed on an object of type Device. All "notify"
8646 objects are now supported -- Devices, Processor, Power, and
8649 Removed most verbosity from the ACPI_DB_INFO debug level. Only
8650 critical information is returned when this debug level is enabled.
8652 Code and Data Size: Current core subsystem library sizes are shown
8653 below. These are the code and data sizes for the acpica.lib
8654 produced by the Microsoft Visual C++ 6.0 compiler, and these
8655 values do not include any ACPI driver or OSPM code. The debug
8656 version of the code includes the debug output trace mechanism and
8657 has a larger code and data size. Note that these values will vary
8658 depending on the efficiency of the compiler and the compiler
8659 options used during generation.
8662 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
8663 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
8665 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
8666 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
8671 The processor driver (acpi_processor.c) now fully supports ACPI
8672 2.0-based processor performance control (e.g. Intel(R)
8673 SpeedStep(TM) technology) Note that older laptops that only have
8674 the Intel "applet" interface are not supported through this. The
8675 'limit' and 'performance' interface (/proc) are fully functional.
8676 [Note that basic policy for controlling performance state
8677 transitions will be included in the next version of ospmd.] The
8678 idle handler was modified to more aggressively use C2, and PIIX4
8679 errata handling underwent a complete overhaul (big thanks to
8682 Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR-
8683 based devices in the ACPI namespace are now dynamically bound
8684 (associated) with their PCI counterparts (e.g. PCI1->01:00.0).
8685 This allows, among other things, ACPI to resolve bus numbers for
8686 subordinate PCI bridges.
8688 Enhanced PCI IRQ routing to get the proper bus number for _PRT
8689 entries defined underneath PCI bridges.
8691 Added IBM 600E to bad bios list due to invalid _ADR value for
8692 PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing.
8694 In the process of adding full MADT support (e.g. IOAPIC) for IA32
8695 (acpi.c, mpparse.c) -- stay tuned.
8697 Added back visual differentiation between fixed-feature and
8698 control-method buttons in dmesg. Buttons are also subtyped (e.g.
8699 button/power/PWRF) to simplify button identification.
8701 We no longer use -Wno-unused when compiling debug. Please ignore
8702 any "_THIS_MODULE defined but not used" messages.
8704 Can now shut down the system using "magic sysrq" key.
8707 3) iASL Compiler version 2041:
8709 Fixed a problem where conversion errors for hex/octal/decimal
8710 constants were not reported.
8712 Implemented a fix for the General Register template Address field.
8713 This field was 8 bits when it should be 64.
8715 Fixed a problem where errors/warnings were no longer being emitted
8716 within the listing output file.
8718 Implemented the ACPI 2.0A restriction on ACPI Table Signatures to
8719 exactly 4 characters, alphanumeric only.
8724 ----------------------------------------
8725 Summary of changes for this release: 03_08_02
8728 1) ACPI CA Core Subsystem Version 20020308:
8730 Fixed a problem with AML Fields where the use of the "AccessAny"
8731 keyword could cause an interpreter error due to attempting to read
8732 or write beyond the end of the parent Operation Region.
8734 Fixed a problem in the SystemMemory Operation Region handler where
8735 an attempt was made to map memory beyond the end of the region.
8736 This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY"
8737 errors on some Linux systems.
8739 Fixed a problem where the interpreter/namespace "search to root"
8740 algorithm was not functioning for some object types. Relaxed the
8741 internal restriction on the search to allow upsearches for all
8742 external object types as well as most internal types.
8747 We now use safe_halt() macro versus individual calls to sti | hlt.
8749 Writing to the processor limit interface should now work. "echo 1"
8750 will increase the limit, 2 will decrease, and 0 will reset to the
8757 Fixed segfault on Linux version.
8760 ----------------------------------------
8761 Summary of changes for this release: 02_25_02
8763 1) ACPI CA Core Subsystem:
8766 Fixed a problem where the GPE bit masks were not initialized
8767 properly, causing erratic GPE behavior.
8769 Implemented limited support for multiple calling conventions. The
8770 code can be generated with either the VPL (variable parameter
8771 list, or "C") convention, or the FPL (fixed parameter list, or
8772 "Pascal") convention. The core subsystem is about 3.4% smaller
8773 when generated with FPL.
8778 Re-add some /proc/acpi/event functionality that was lost during
8781 Resolved issue with /proc events for fixed-feature buttons showing
8782 up as the system device.
8784 Fixed checks on C2/C3 latencies to be inclusive of maximum values.
8786 Replaced AE_ERRORs in acpi_osl.c with more specific error codes.
8788 Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi"
8790 Fixed limit interface & usage to fix bugs with passive cooling
8793 Restructured PRT support.
8796 ----------------------------------------
8797 Summary of changes for this label: 02_14_02
8800 1) ACPI CA Core Subsystem:
8802 Implemented support in AcpiLoadTable to allow loading of FACS and
8805 Suport for the now-obsolete interim 0.71 64-bit ACPI tables has
8806 been removed. All 64-bit platforms should be migrated to the ACPI
8807 2.0 tables. The actbl71.h header has been removed from the source
8810 All C macros defined within the subsystem have been prefixed with
8811 "ACPI_" to avoid collision with other system include files.
8813 Removed the return value for the two AcpiOsPrint interfaces, since
8814 it is never used and causes lint warnings for ignoring the return
8817 Added error checking to all internal mutex acquire and release
8818 calls. Although a failure from one of these interfaces is
8819 probably a fatal system error, these checks will cause the
8820 immediate abort of the currently executing method or interface.
8822 Fixed a problem where the AcpiSetCurrentResources interface could
8823 fault. This was a side effect of the deployment of the new memory
8826 Fixed a couple of problems with the Global Lock support introduced
8827 in the last major build. The "common" (1.0/2.0) internal FACS was
8828 being overwritten with the FACS signature and clobbering the
8829 Global Lock pointer. Also, the actual firmware FACS was being
8830 unmapped after construction of the "common" FACS, preventing
8831 access to the actual Global Lock field within it. The "common"
8832 internal FACS is no longer installed as an actual ACPI table; it
8833 is used simply as a global.
8835 Code and Data Size: Current core subsystem library sizes are shown
8836 below. These are the code and data sizes for the acpica.lib
8837 produced by the Microsoft Visual C++ 6.0 compiler, and these
8838 values do not include any ACPI driver or OSPM code. The debug
8839 version of the code includes the debug output trace mechanism and
8840 has a larger code and data size. Note that these values will vary
8841 depending on the efficiency of the compiler and the compiler
8842 options used during generation.
8844 Previous Release (02_07_01)
8845 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
8846 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
8848 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
8849 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
8854 Updated Linux-specific code for core macro and OSL interface
8855 changes described above.
8857 Improved /proc/acpi/event. It now can be opened only once and has
8858 proper poll functionality.
8860 Fixed and restructured power management (acpi_bus).
8862 Only create /proc "view by type" when devices of that class exist.
8864 Fixed "charging/discharging" bug (and others) in acpi_battery.
8866 Improved thermal zone code.
8869 3) ASL Compiler, version X2039:
8872 Implemented the new compiler restriction on ASL String hex/octal
8873 escapes to non-null, ASCII values. An error results if an invalid
8874 value is used. (This will require an ACPI 2.0 specification
8877 AML object labels that are output to the optional C and ASM source
8878 are now prefixed with both the ACPI table signature and table ID
8879 to help guarantee uniqueness within a large BIOS project.
8882 ----------------------------------------
8883 Summary of changes for this label: 02_01_02
8885 1) ACPI CA Core Subsystem:
8887 ACPI 2.0 support is complete in the entire Core Subsystem and the
8888 ASL compiler. All new ACPI 2.0 operators are implemented and all
8889 other changes for ACPI 2.0 support are complete. With
8890 simultaneous code and data optimizations throughout the subsystem,
8891 ACPI 2.0 support has been implemented with almost no additional
8892 cost in terms of code and data size.
8894 Implemented a new mechanism for allocation of return buffers. If
8895 the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will
8896 be allocated on behalf of the caller. Consolidated all return
8897 buffer validation and allocation to a common procedure. Return
8898 buffers will be allocated via the primary OSL allocation interface
8899 since it appears that a separate pool is not needed by most users.
8900 If a separate pool is required for these buffers, the caller can
8901 still use the original mechanism and pre-allocate the buffer(s).
8903 Implemented support for string operands within the DerefOf
8906 Restructured the Hardware and Event managers to be table driven,
8907 simplifying the source code and reducing the amount of generated
8910 Split the common read/write low-level ACPI register bitfield
8911 procedure into a separate read and write, simplifying the code
8914 Obsoleted the AcpiOsCallocate OSL interface. This interface was
8915 used only a handful of times and didn't have enough critical mass
8916 for a separate interface. Replaced with a common calloc procedure
8919 Fixed a reported problem with the GPE number mapping mechanism
8920 that allows GPE1 numbers to be non-contiguous with GPE0.
8921 Reorganized the GPE information and shrunk a large array that was
8922 originally large enough to hold info for all possible GPEs (256)
8923 to simply large enough to hold all GPEs up to the largest GPE
8924 number on the machine.
8926 Fixed a reported problem with resource structure alignment on 64-
8929 Changed the AcpiEnableEvent and AcpiDisableEvent external
8930 interfaces to not require any flags for the common case of
8931 enabling/disabling a GPE.
8933 Implemented support to allow a "Notify" on a Processor object.
8935 Most TBDs in comments within the source code have been resolved
8939 Fixed a problem in the interpreter where a standalone parent
8940 prefix (^) was not handled correctly in the interpreter and
8943 Removed obsolete and unnecessary GPE save/restore code.
8945 Implemented Field support in the ASL Load operator. This allows a
8946 table to be loaded from a named field, in addition to loading a
8947 table directly from an Operation Region.
8949 Implemented timeout and handle support in the external Global Lock
8952 Fixed a problem in the AcpiDump utility where pathnames were no
8953 longer being generated correctly during the dump of named objects.
8955 Modified the AML debugger to give a full display of if/while
8956 predicates instead of just one AML opcode at a time. (The
8957 predicate can have several nested ASL statements.) The old method
8958 was confusing during single stepping.
8960 Code and Data Size: Current core subsystem library sizes are shown
8961 below. These are the code and data sizes for the acpica.lib
8962 produced by the Microsoft Visual C++ 6.0 compiler, and these
8963 values do not include any ACPI driver or OSPM code. The debug
8964 version of the code includes the debug output trace mechanism and
8965 has a larger code and data size. Note that these values will vary
8966 depending on the efficiency of the compiler and the compiler
8967 options used during generation.
8969 Previous Release (12_18_01)
8970 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
8971 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
8973 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
8974 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
8978 Implemented fix for PIIX reverse throttling errata (Processor
8981 Added new Limit interface (Processor and Thermal drivers)
8983 New thermal policy (Thermal driver)
8985 Many updates to /proc
8987 Battery "low" event support (Battery driver)
8989 Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers)
8991 IA32 - IA64 initialization unification, no longer experimental
8993 Menuconfig options redesigned
8995 3) ASL Compiler, version X2037:
8997 Implemented several new output features to simplify integration of
8998 AML code into firmware: 1) Output the AML in C source code with
8999 labels for each named ASL object. The original ASL source code
9000 is interleaved as C comments. 2) Output the AML in ASM source code
9001 with labels and interleaved ASL source. 3) Output the AML in
9002 raw hex table form, in either C or ASM.
9004 Implemented support for optional string parameters to the
9007 Completed support for embedded escape sequences within string
9008 literals. The compiler now supports all single character escapes
9009 as well as the Octal and Hex escapes. Note: the insertion of a
9010 null byte into a string literal (via the hex/octal escape) causes
9011 the string to be immediately terminated. A warning is issued.
9013 Fixed a problem where incorrect AML was generated for the case
9014 where an ASL namepath consists of a single parent prefix (
9016 ) with no trailing name segments.
9018 The compiler has been successfully generated with a 64-bit C
9024 ----------------------------------------
9025 Summary of changes for this label: 12_18_01
9029 Enhanced blacklist with reason and severity fields. Any table's
9030 signature may now be used to identify a blacklisted system.
9032 Call _PIC control method to inform the firmware which interrupt
9033 model the OS is using. Turn on any disabled link devices.
9035 Cleaned up busmgr /proc error handling (Andreas Dilger)
9037 2) ACPI CA Core Subsystem:
9039 Implemented ACPI 2.0 semantics for the "Break" operator (Exit from
9042 Completed implementation of the ACPI 2.0 "Continue",
9043 "ConcatenateResTemplate", "DataTableRegion", and "LoadTable"
9044 operators. All new ACPI 2.0 operators are now implemented in both
9045 the ASL compiler and the AML interpreter. The only remaining ACPI
9046 2.0 task is support for the String data type in the DerefOf
9047 operator. Fixed a problem with AcquireMutex where the status code
9048 was lost if the caller had to actually wait for the mutex.
9050 Increased the maximum ASL Field size from 64K bits to 4G bits.
9052 Completed implementation of the external Global Lock interfaces --
9053 AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and
9054 Handler parameters were added.
9056 Completed another pass at removing warnings and issues when
9057 compiling with 64-bit compilers. The code now compiles cleanly
9058 with the Intel 64-bit C/C++ compiler. Most notably, the pointer
9059 add and subtract (diff) macros have changed considerably.
9062 Created and deployed a new ACPI_SIZE type that is 64-bits wide on
9063 64-bit platforms, 32-bits on all others. This type is used
9064 wherever memory allocation and/or the C sizeof() operator is used,
9065 and affects the OSL memory allocation interfaces AcpiOsAllocate
9066 and AcpiOsCallocate.
9068 Implemented sticky user breakpoints in the AML debugger.
9070 Code and Data Size: Current core subsystem library sizes are shown
9071 below. These are the code and data sizes for the acpica.lib
9072 produced by the Microsoft Visual C++ 6.0 compiler, and these
9073 values do not include any ACPI driver or OSPM code. The debug
9074 version of the code includes the debug output trace mechanism and
9075 has a larger code and data size. Note that these values will vary
9076 depending on the efficiency of the compiler and the compiler
9077 options used during generation.
9079 Previous Release (12_05_01)
9080 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
9081 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
9083 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
9084 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
9086 3) ASL Compiler, version X2034:
9088 Now checks for (and generates an error if detected) the use of a
9089 Break or Continue statement without an enclosing While statement.
9092 Successfully generated the compiler with the Intel 64-bit C
9095 ----------------------------------------
9096 Summary of changes for this label: 12_05_01
9098 1) ACPI CA Core Subsystem:
9100 The ACPI 2.0 CopyObject operator is fully implemented. This
9101 operator creates a new copy of an object (and is also used to
9102 bypass the "implicit conversion" mechanism of the Store operator.)
9104 The ACPI 2.0 semantics for the SizeOf operator are fully
9105 implemented. The change is that performing a SizeOf on a
9106 reference object causes an automatic dereference of the object to
9107 tha actual value before the size is evaluated. This behavior was
9108 undefined in ACPI 1.0.
9110 The ACPI 2.0 semantics for the Extended IRQ resource descriptor
9111 have been implemented. The interrupt polarity and mode are now
9114 Fixed a problem where ASL Constants (Zero, One, Ones, Revision)
9115 appearing in Package objects were not properly converted to
9116 integers when the internal Package was converted to an external
9117 object (via the AcpiEvaluateObject interface.)
9119 Fixed a problem with the namespace object deletion mechanism for
9120 objects created by control methods. There were two parts to this
9121 problem: 1) Objects created during the initialization phase method
9122 parse were not being deleted, and 2) The object owner ID mechanism
9123 to track objects was broken.
9125 Fixed a problem where the use of the ASL Scope operator within a
9126 control method would result in an invalid opcode exception.
9128 Fixed a problem introduced in the previous label where the buffer
9129 length required for the _PRT structure was not being returned
9132 Code and Data Size: Current core subsystem library sizes are shown
9133 below. These are the code and data sizes for the acpica.lib
9134 produced by the Microsoft Visual C++ 6.0 compiler, and these
9135 values do not include any ACPI driver or OSPM code. The debug
9136 version of the code includes the debug output trace mechanism and
9137 has a larger code and data size. Note that these values will vary
9138 depending on the efficiency of the compiler and the compiler
9139 options used during generation.
9141 Previous Release (11_20_01)
9142 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
9143 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
9146 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
9147 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
9151 Updated all files to apply cleanly against 2.4.16.
9153 Added basic PCI Interrupt Routing Table (PRT) support for IA32
9154 (acpi_pci.c), and unified the PRT code for IA32 and IA64. This
9155 version supports both static and dyanmic PRT entries, but dynamic
9156 entries are treated as if they were static (not yet
9157 reconfigurable). Architecture- specific code to use this data is
9158 absent on IA32 but should be available shortly.
9160 Changed the initialization sequence to start the ACPI interpreter
9161 (acpi_init) prior to initialization of the PCI driver (pci_init)
9162 in init/main.c. This ordering is required to support PRT and
9163 facilitate other (future) enhancement. A side effect is that the
9164 ACPI bus driver and certain device drivers can no longer be loaded
9167 Modified the 'make menuconfig' options to allow PCI Interrupt
9168 Routing support to be included without the ACPI Bus and other
9171 3) ASL Compiler, version X2033:
9173 Fixed some issues with the use of the new CopyObject and
9174 DataTableRegion operators. Both are fully functional.
9176 ----------------------------------------
9177 Summary of changes for this label: 11_20_01
9179 20 November 2001. Summary of changes for this release.
9181 1) ACPI CA Core Subsystem:
9183 Updated Index support to match ACPI 2.0 semantics. Storing a
9184 Integer, String, or Buffer to an Index of a Buffer will store only
9185 the least-significant byte of the source to the Indexed buffer
9186 byte. Multiple writes are not performed.
9188 Fixed a problem where the access type used in an AccessAs ASL
9189 operator was not recorded correctly into the field object.
9191 Fixed a problem where ASL Event objects were created in a
9192 signalled state. Events are now created in an unsignalled state.
9194 The internal object cache is now purged after table loading and
9195 initialization to reduce the use of dynamic kernel memory -- on
9196 the assumption that object use is greatest during the parse phase
9197 of the entire table (versus the run-time use of individual control
9200 ACPI 2.0 variable-length packages are now fully operational.
9202 Code and Data Size: Code and Data optimizations have permitted new
9203 feature development with an actual reduction in the library size.
9204 Current core subsystem library sizes are shown below. These are
9205 the code and data sizes for the acpica.lib produced by the
9206 Microsoft Visual C++ 6.0 compiler, and these values do not include
9207 any ACPI driver or OSPM code. The debug version of the code
9208 includes the debug output trace mechanism and has a larger code
9209 and data size. Note that these values will vary depending on the
9210 efficiency of the compiler and the compiler options used during
9213 Previous Release (11_09_01):
9214 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
9215 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
9218 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
9219 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
9223 Enhanced the ACPI boot-time initialization code to allow the use
9224 of Local APIC tables for processor enumeration on IA-32, and to
9225 pave the way for a fully MPS-free boot (on SMP systems) in the
9226 near future. This functionality replaces
9227 arch/i386/kernel/acpitables.c, which was introduced in an earlier
9228 2.4.15-preX release. To enable this feature you must add
9229 "acpi_boot=on" to the kernel command line -- see the help entry
9230 for CONFIG_ACPI_BOOT for more information. An IA-64 release is in
9233 Restructured the configuration options to allow boot-time table
9234 parsing support without inclusion of the ACPI Interpreter (and
9237 NOTE: This release does not include fixes for the reported events,
9238 power-down, and thermal passive cooling issues (coming soon).
9242 Added additional typechecking for Fields within restricted access
9243 Operation Regions. All fields within EC and CMOS regions must be
9244 declared with ByteAcc. All fields withing SMBus regions must be
9245 declared with the BufferAcc access type.
9247 Fixed a problem where the listing file output of control methods
9248 no longer interleaved the actual AML code with the ASL source
9254 ----------------------------------------
9255 Summary of changes for this label: 11_09_01
9257 1) ACPI CA Core Subsystem:
9259 Implemented ACPI 2.0-defined support for writes to fields with a
9260 Buffer, String, or Integer source operand that is smaller than the
9261 target field. In these cases, the source operand is zero-extended
9262 to fill the target field.
9264 Fixed a problem where a Field starting bit offset (within the
9265 parent operation region) was calculated incorrectly if the
9267 alignment of the field differed from the access width. This
9268 affected CreateWordField, CreateDwordField, CreateQwordField, and
9269 possibly other fields that use the "AccessAny" keyword.
9271 Fixed a problem introduced in the 11_02_01 release where indirect
9272 stores through method arguments did not operate correctly.
9276 Implemented boot-time ACPI table parsing support
9277 (CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code
9278 facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than
9279 legacy BIOS interfaces (e.g. MPS) for the configuration of system
9280 processors, memory, and interrupts during setup_arch(). Note that
9281 this patch does not include the required architecture-specific
9282 changes required to apply this information -- subsequent patches
9283 will be posted for both IA32 and IA64 to achieve this.
9285 Added low-level sleep support for IA32 platforms, courtesy of Pat
9286 Mochel. This allows IA32 systems to transition to/from various
9287 sleeping states (e.g. S1, S3), although the lack of a centralized
9288 driver model and power-manageable drivers will prevent its
9289 (successful) use on most systems.
9291 Revamped the ACPI 'menuconfig' layout: created new "ACPI Support"
9292 submenu, unified IA32 and IA64 options, added new "Boot using ACPI
9293 tables" option, etc.
9295 Increased the default timeout for the EC driver from 1ms to 10ms
9296 (1000 cycles of 10us) to try to address AE_TIME errors during EC
9299 ----------------------------------------
9300 Summary of changes for this label: 11_02_01
9302 1) ACPI CA Core Subsystem:
9304 ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access
9305 (QWordAcc keyword). All ACPI 2.0 64-bit support is now
9308 OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required
9309 changes to support ACPI 2.0 Qword field access. Read/Write
9310 PciConfiguration(), Read/Write Memory(), and Read/Write Port() now
9311 accept an ACPI_INTEGER (64 bits) as the value parameter. Also,
9312 the value parameter for the address space handler interface is now
9313 an ACPI_INTEGER. OSL implementations of these interfaces must now
9314 handle the case where the Width parameter is 64.
9316 Index Fields: Fixed a problem where unaligned bit assembly and
9317 disassembly for IndexFields was not supported correctly.
9319 Index and Bank Fields: Nested Index and Bank Fields are now
9320 supported. During field access, a check is performed to ensure
9321 that the value written to an Index or Bank register is not out of
9322 the range of the register. The Index (or Bank) register is
9323 written before each access to the field data. Future support will
9324 include allowing individual IndexFields to be wider than the
9327 Fields: Fixed a problem where the AML interpreter was incorrectly
9328 attempting to write beyond the end of a Field/OpRegion. This was
9329 a boundary case that occurred when a DWORD field was written to a
9330 BYTE access OpRegion, forcing multiple writes and causing the
9331 interpreter to write one datum too many.
9333 Fields: Fixed a problem with Field/OpRegion access where the
9334 starting bit address of a field was incorrectly calculated if the
9335 current access type was wider than a byte (WordAcc, DwordAcc, or
9338 Fields: Fixed a problem where forward references to individual
9339 FieldUnits (individual Field names within a Field definition) were
9340 not resolved during the AML table load.
9342 Fields: Fixed a problem where forward references from a Field
9343 definition to the parent Operation Region definition were not
9344 resolved during the AML table load.
9346 Fields: Duplicate FieldUnit names within a scope are now detected
9347 during AML table load.
9349 Acpi Interfaces: Fixed a problem where the AcpiGetName() interface
9350 returned an incorrect name for the root node.
9352 Code and Data Size: Code and Data optimizations have permitted new
9353 feature development with an actual reduction in the library size.
9354 Current core subsystem library sizes are shown below. These are
9355 the code and data sizes for the acpica.lib produced by the
9356 Microsoft Visual C++ 6.0 compiler, and these values do not include
9357 any ACPI driver or OSPM code. The debug version of the code
9358 includes the debug output trace mechanism and has a larger code
9359 and data size. Note that these values will vary depending on the
9360 efficiency of the compiler and the compiler options used during
9363 Previous Release (10_18_01):
9364 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
9365 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
9368 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
9369 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
9373 Improved /proc processor output (Pavel Machek) Re-added
9374 MODULE_LICENSE("GPL") to all modules.
9376 3) ASL Compiler version X2030:
9378 Duplicate FieldUnit names within a scope are now detected and
9383 Programmer Reference updated to reflect OSL and address space
9384 handler interface changes described above.
9386 ----------------------------------------
9387 Summary of changes for this label: 10_18_01
9389 ACPI CA Core Subsystem:
9391 Fixed a problem with the internal object reference count mechanism
9392 that occasionally caused premature object deletion. This resolves
9393 all of the outstanding problem reports where an object is deleted
9394 in the middle of an interpreter evaluation. Although this problem
9395 only showed up in rather obscure cases, the solution to the
9396 problem involved an adjustment of all reference counts involving
9397 objects attached to namespace nodes.
9399 Fixed a problem with Field support in the interpreter where
9400 writing to an aligned field whose length is an exact multiple (2
9401 or greater) of the field access granularity would cause an attempt
9402 to write beyond the end of the field.
9404 The top level AML opcode execution functions within the
9405 interpreter have been renamed with a more meaningful and
9406 consistent naming convention. The modules exmonad.c and
9407 exdyadic.c were eliminated. New modules are exoparg1.c,
9408 exoparg2.c, exoparg3.c, and exoparg6.c.
9410 Support for the ACPI 2.0 "Mid" ASL operator has been implemented.
9412 Fixed a problem where the AML debugger was causing some internal
9413 objects to not be deleted during subsystem termination.
9415 Fixed a problem with the external AcpiEvaluateObject interface
9416 where the subsystem would fault if the named object to be
9417 evaluated refered to a constant such as Zero, Ones, etc.
9419 Fixed a problem with IndexFields and BankFields where the
9420 subsystem would fault if the index, data, or bank registers were
9421 not defined in the same scope as the field itself.
9423 Added printf format string checking for compilers that support
9424 this feature. Corrected more than 50 instances of issues with
9425 format specifiers within invocations of ACPI_DEBUG_PRINT
9426 throughout the core subsystem code.
9428 The ASL "Revision" operator now returns the ACPI support level
9429 implemented in the core - the value "2" since the ACPI 2.0 support
9430 is more than 50% implemented.
9432 Enhanced the output of the AML debugger "dump namespace" command
9433 to output in a more human-readable form.
9435 Current core subsystem library code sizes are shown below. These
9437 are the code and data sizes for the acpica.lib produced by the
9438 Microsoft Visual C++ 6.0 compiler, and these values do not include
9439 any ACPI driver or OSPM code. The debug version of the code
9440 includes the full debug trace mechanism -- leading to a much
9442 larger code and data size. Note that these values will vary
9443 depending on the efficiency of the compiler and the compiler
9444 options used during generation.
9446 Previous Label (09_20_01):
9447 Non-Debug Version: 65K Code, 5K Data, 70K Total
9448 Debug Version: 138K Code, 58K Data, 196K Total
9452 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
9453 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
9457 Implemented a "Bad BIOS Blacklist" to track machines that have
9458 known ASL/AML problems.
9460 Enhanced the /proc interface for the thermal zone driver and added
9461 support for _HOT (the critical suspend trip point). The 'info'
9462 file now includes threshold/policy information, and allows setting
9463 of _SCP (cooling preference) and _TZP (polling frequency) values
9464 to the 'info' file. Examples: "echo tzp=5 > info" sets the polling
9465 frequency to 5 seconds, and "echo scp=1 > info" sets the cooling
9466 preference to the passive/quiet mode (if supported by the ASL).
9468 Implemented a workaround for a gcc bug that resuted in an OOPs
9469 when loading the control method battery driver.
9471 ----------------------------------------
9472 Summary of changes for this label: 09_20_01
9474 ACPI CA Core Subsystem:
9476 The AcpiEnableEvent and AcpiDisableEvent interfaces have been
9477 modified to allow individual GPE levels to be flagged as wake-
9478 enabled (i.e., these GPEs are to remain enabled when the platform
9481 The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now
9482 support wake-enabled GPEs. This means that upon entering the
9483 sleep state, all GPEs that are not wake-enabled are disabled.
9484 When leaving the sleep state, these GPEs are reenabled.
9486 A local double-precision divide/modulo module has been added to
9487 enhance portability to OS kernels where a 64-bit math library is
9488 not available. The new module is "utmath.c".
9490 Several optimizations have been made to reduce the use of CPU
9491 stack. Originally over 2K, the maximum stack usage is now below
9492 2K at 1860 bytes (1.82k)
9494 Fixed a problem with the AcpiGetFirmwareTable interface where the
9495 root table pointer was not mapped into a logical address properly.
9497 Fixed a problem where a NULL pointer was being dereferenced in the
9498 interpreter code for the ASL Notify operator.
9500 Fixed a problem where the use of the ASL Revision operator
9501 returned an error. This operator now returns the current version
9502 of the ACPI CA core subsystem.
9504 Fixed a problem where objects passed as control method parameters
9505 to AcpiEvaluateObject were always deleted at method termination.
9506 However, these objects may end up being stored into the namespace
9507 by the called method. The object reference count mechanism was
9508 applied to these objects instead of a force delete.
9510 Fixed a problem where static strings or buffers (contained in the
9511 AML code) that are declared as package elements within the ASL
9512 code could cause a fault because the interpreter would attempt to
9513 delete them. These objects are now marked with the "static
9514 object" flag to prevent any attempt to delete them.
9516 Implemented an interpreter optimization to use operands directly
9517 from the state object instead of extracting the operands to local
9518 variables. This reduces stack use and code size, and improves
9521 The module exxface.c was eliminated as it was an unnecessary extra
9524 Current core subsystem library code sizes are shown below. These
9525 are the code and data sizes for the acpica.lib produced by the
9526 Microsoft Visual C++ 6.0 compiler, and these values do not include
9527 any ACPI driver or OSPM code. The debug version of the code
9528 includes the full debug trace mechanism -- leading to a much
9529 larger code and data size. Note that these values will vary
9530 depending on the efficiency of the compiler and the compiler
9531 options used during generation.
9533 Non-Debug Version: 65K Code, 5K Data, 70K Total
9534 (Previously 69K) Debug Version: 138K Code, 58K Data, 196K
9535 Total (Previously 195K)
9539 Support for ACPI 2.0 64-bit integers has been added. All ACPI
9540 Integer objects are now 64 bits wide
9542 All Acpi data types and structures are now in lower case. Only
9543 Acpi macros are upper case for differentiation.
9547 Changes to the external interfaces as described above.
9549 ----------------------------------------
9550 Summary of changes for this label: 08_31_01
9552 ACPI CA Core Subsystem:
9554 A bug with interpreter implementation of the ASL Divide operator
9555 was found and fixed. The implicit function return value (not the
9556 explicit store operands) was returning the remainder instead of
9557 the quotient. This was a longstanding bug and it fixes several
9558 known outstanding issues on various platforms.
9560 The ACPI_DEBUG_PRINT and function trace entry/exit macros have
9561 been further optimized for size. There are 700 invocations of the
9562 DEBUG_PRINT macro alone, so each optimization reduces the size of
9563 the debug version of the subsystem significantly.
9565 A stack trace mechanism has been implemented. The maximum stack
9566 usage is about 2K on 32-bit platforms. The debugger command "stat
9567 stack" will display the current maximum stack usage.
9569 All public symbols and global variables within the subsystem are
9570 now prefixed with the string "Acpi". This keeps all of the
9571 symbols grouped together in a kernel map, and avoids conflicts
9572 with other kernel subsystems.
9574 Most of the internal fixed lookup tables have been moved into the
9575 code segment via the const operator.
9577 Several enhancements have been made to the interpreter to both
9578 reduce the code size and improve performance.
9580 Current core subsystem library code sizes are shown below. These
9581 are the code and data sizes for the acpica.lib produced by the
9582 Microsoft Visual C++ 6.0 compiler, and these values do not include
9583 any ACPI driver or OSPM code. The debug version of the code
9584 includes the full debug trace mechanism which contains over 700
9585 invocations of the DEBUG_PRINT macro, 500 function entry macro
9586 invocations, and over 900 function exit macro invocations --
9587 leading to a much larger code and data size. Note that these
9588 values will vary depending on the efficiency of the compiler and
9589 the compiler options used during generation.
9591 Non-Debug Version: 64K Code, 5K Data, 69K Total
9592 Debug Version: 137K Code, 58K Data, 195K Total
9596 Implemented wbinvd() macro, pending a kernel-wide definition.
9598 Fixed /proc/acpi/event to handle poll() and short reads.
9600 ASL Compiler, version X2026:
9602 Fixed a problem introduced in the previous label where the AML
9604 code emitted for package objects produced packages with zero
9607 ----------------------------------------
9608 Summary of changes for this label: 08_16_01
9610 ACPI CA Core Subsystem:
9612 The following ACPI 2.0 ASL operators have been implemented in the
9613 AML interpreter (These are already supported by the Intel ASL
9614 compiler): ToDecimalString, ToHexString, ToString, ToInteger, and
9615 ToBuffer. Support for 64-bit AML constants is implemented in the
9616 AML parser, debugger, and disassembler.
9618 The internal memory tracking mechanism (leak detection code) has
9619 been upgraded to reduce the memory overhead (a separate tracking
9620 block is no longer allocated for each memory allocation), and now
9621 supports all of the internal object caches.
9623 The data structures and code for the internal object caches have
9624 been coelesced and optimized so that there is a single cache and
9625 memory list data structure and a single group of functions that
9626 implement generic cache management. This has reduced the code
9627 size in both the debug and release versions of the subsystem.
9629 The DEBUG_PRINT macro(s) have been optimized for size and replaced
9630 by ACPI_DEBUG_PRINT. The syntax for this macro is slightly
9631 different, because it generates a single call to an internal
9632 function. This results in a savings of about 90 bytes per
9633 invocation, resulting in an overall code and data savings of about
9634 16% in the debug version of the subsystem.
9638 Fixed C3 disk corruption problems and re-enabled C3 on supporting
9641 Integrated low-level sleep code by Patrick Mochel.
9643 Further tweaked source code Linuxization.
9649 Support for ACPI 2.0 variable length packages is fixed/completed.
9651 Fixed a problem where the optional length parameter for the ACPI
9652 2.0 ToString operator.
9654 Fixed multiple extraneous error messages when a syntax error is
9655 detected within the declaration line of a control method.
9657 ----------------------------------------
9658 Summary of changes for this label: 07_17_01
9660 ACPI CA Core Subsystem:
9662 Added a new interface named AcpiGetFirmwareTable to obtain any
9663 ACPI table via the ACPI signature. The interface can be called at
9664 any time during kernel initialization, even before the kernel
9665 virtual memory manager is initialized and paging is enabled. This
9666 allows kernel subsystems to obtain ACPI tables very early, even
9667 before the ACPI CA subsystem is initialized.
9669 Fixed a problem where Fields defined with the AnyAcc attribute
9670 could be resolved to the incorrect address under the following
9671 conditions: 1) the field width is larger than 8 bits and 2) the
9672 parent operation region is not defined on a DWORD boundary.
9674 Fixed a problem where the interpreter is not being locked during
9675 namespace initialization (during execution of the _INI control
9676 methods), causing an error when an attempt is made to release it
9679 ACPI 2.0 support in the AML Interpreter has begun and will be
9680 ongoing throughout the rest of this year. In this label, The Mod
9681 operator is implemented.
9683 Added a new data type to contain full PCI addresses named
9684 ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device,
9685 and Function values.
9689 Enhanced the Linux version of the source code to change most
9690 capitalized ACPI type names to lowercase. For example, all
9691 instances of ACPI_STATUS are changed to acpi_status. This will
9692 result in a large diff, but the change is strictly cosmetic and
9693 aligns the CA code closer to the Linux coding standard.
9697 The interfaces to the PCI configuration space have been changed to
9698 add the PCI Segment number and to split the single 32-bit combined
9699 DeviceFunction field into two 16-bit fields. This was
9700 accomplished by moving the four values that define an address in
9701 PCI configuration space (segment, bus, device, and function) to
9702 the new ACPI_PCI_ID structure.
9704 The changes to the PCI configuration space interfaces led to a
9705 reexamination of the complete set of address space access
9706 interfaces for PCI, I/O, and Memory. The previously existing 18
9707 interfaces have proven difficult to maintain (any small change
9708 must be propagated across at least 6 interfaces) and do not easily
9709 allow for future expansion to 64 bits if necessary. Also, on some
9710 systems, it would not be appropriate to demultiplex the access
9711 width (8, 16, 32,or 64) before calling the OSL if the
9712 corresponding native OS interfaces contain a similar access width
9713 parameter. For these reasons, the 18 address space interfaces
9714 have been replaced by these 6 new ones:
9716 AcpiOsReadPciConfiguration
9717 AcpiOsWritePciConfiguration
9723 Added a new interface named AcpiOsGetRootPointer to allow the OSL
9724 to perform the platform and/or OS-specific actions necessary to
9725 obtain the ACPI RSDP table pointer. On IA-32 platforms, this
9726 interface will simply call down to the CA core to perform the low-
9727 memory search for the table. On IA-64, the RSDP is obtained from
9728 EFI. Migrating this interface to the OSL allows the CA core to
9730 remain OS and platform independent.
9732 Added a new interface named AcpiOsSignal to provide a generic
9733 "function code and pointer" interface for various miscellaneous
9734 signals and notifications that must be made to the host OS. The
9735 first such signals are intended to support the ASL Fatal and
9736 Breakpoint operators. In the latter case, the AcpiOsBreakpoint
9737 interface has been obsoleted.
9739 The definition of the AcpiFormatException interface has been
9740 changed to simplify its use. The caller no longer must supply a
9741 buffer to the call; A pointer to a const string is now returned
9742 directly. This allows the call to be easily used in printf
9743 statements, etc. since the caller does not have to manage a local
9747 ASL Compiler, Version X2025:
9749 The ACPI 2.0 Switch/Case/Default operators have been implemented
9750 and are fully functional. They will work with all ACPI 1.0
9751 interpreters, since the operators are simply translated to If/Else
9754 The ACPI 2.0 ElseIf operator is implemented and will also work
9755 with 1.0 interpreters, for the same reason.
9757 Implemented support for ACPI 2.0 variable-length packages. These
9758 packages have a separate opcode, and their size is determined by
9759 the interpreter at run-time.
9761 Documentation The ACPI CA Programmer Reference has been updated to
9762 reflect the new interfaces and changes to existing interfaces.
9764 ------------------------------------------
9765 Summary of changes for this label: 06_15_01
9767 ACPI CA Core Subsystem:
9769 Fixed a problem where a DWORD-accessed field within a Buffer
9770 object would get its byte address inadvertently rounded down to
9771 the nearest DWORD. Buffers are always Byte-accessible.
9773 ASL Compiler, version X2024:
9775 Fixed a problem where the Switch() operator would either fault or
9776 hang the compiler. Note however, that the AML code for this ACPI
9777 2.0 operator is not yet implemented.
9779 Compiler uses the new AcpiOsGetTimer interface to obtain compile
9782 Implementation of the CreateField operator automatically converts
9783 a reference to a named field within a resource descriptor from a
9784 byte offset to a bit offset if required.
9786 Added some missing named fields from the resource descriptor
9787 support. These are the names that are automatically created by the
9788 compiler to reference fields within a descriptor. They are only
9789 valid at compile time and are not passed through to the AML
9792 Resource descriptor named fields are now typed as Integers and
9793 subject to compile-time typechecking when used in expressions.
9795 ------------------------------------------
9796 Summary of changes for this label: 05_18_01
9798 ACPI CA Core Subsystem:
9800 Fixed a couple of problems in the Field support code where bits
9801 from adjacent fields could be returned along with the proper field
9802 bits. Restructured the field support code to improve performance,
9803 readability and maintainability.
9805 New DEBUG_PRINTP macro automatically inserts the procedure name
9806 into the output, saving hundreds of copies of procedure name
9807 strings within the source, shrinking the memory footprint of the
9808 debug version of the core subsystem.
9810 Source Code Structure:
9812 The source code directory tree was restructured to reflect the
9813 current organization of the component architecture. Some files
9814 and directories have been moved and/or renamed.
9818 Fixed leaking kacpidpc processes.
9820 Fixed queueing event data even when /proc/acpi/event is not
9823 ASL Compiler, version X2020:
9825 Memory allocation performance enhancement - over 24X compile time
9826 improvement on large ASL files. Parse nodes and namestring
9827 buffers are now allocated from a large internal compiler buffer.
9829 The temporary .SRC file is deleted unless the "-s" option is
9832 The "-d" debug output option now sends all output to the .DBG file
9833 instead of the console.
9835 "External" second parameter is now optional
9837 "ElseIf" syntax now properly allows the predicate
9839 Last operand to "Load" now recognized as a Target operand
9841 Debug object can now be used anywhere as a normal object.
9843 ResourceTemplate now returns an object of type BUFFER
9845 EISAID now returns an object of type INTEGER
9847 "Index" now works with a STRING operand
9849 "LoadTable" now accepts optional parameters
9851 "ToString" length parameter is now optional
9853 "Interrupt (ResourceType," parse error fixed.
9855 "Register" with a user-defined region space parse error fixed
9857 Escaped backslash at the end of a string ("\\") scan/parse error
9860 "Revision" is now an object of type INTEGER.
9864 ------------------------------------------
9865 Summary of changes for this label: 05_02_01
9869 /proc/acpi/event now blocks properly.
9871 Removed /proc/sys/acpi. You can still dump your DSDT from
9874 ACPI CA Core Subsystem:
9876 Fixed a problem introduced in the previous label where some of the
9877 "small" resource descriptor types were not recognized.
9879 Improved error messages for the case where an ASL Field is outside
9880 the range of the parent operation region.
9882 ASL Compiler, version X2018:
9885 Added error detection for ASL Fields that extend beyond the length
9886 of the parent operation region (only if the length of the region
9887 is known at compile time.) This includes fields that have a
9888 minimum access width that is smaller than the parent region, and
9889 individual field units that are partially or entirely beyond the
9890 extent of the parent.
9894 ------------------------------------------
9895 Summary of changes for this label: 04_27_01
9897 ACPI CA Core Subsystem:
9899 Fixed a problem where the namespace mutex could be released at the
9900 wrong time during execution of AcpiRemoveAddressSpaceHandler.
9902 Added optional thread ID output for debug traces, to simplify
9903 debugging of multiple threads. Added context switch notification
9904 when the debug code realizes that a different thread is now
9905 executing ACPI code.
9907 Some additional external data types have been prefixed with the
9908 string "ACPI_" for consistency. This may effect existing code.
9909 The data types affected are the external callback typedefs - e.g.,
9911 WALK_CALLBACK becomes ACPI_WALK_CALLBACK.
9915 Fixed an issue with the OSL semaphore implementation where a
9916 thread was waking up with an error from receiving a SIGCHLD
9919 Linux version of ACPI CA now uses the system C library for string
9920 manipulation routines instead of a local implementation.
9922 Cleaned up comments and removed TBDs.
9924 ASL Compiler, version X2017:
9926 Enhanced error detection and reporting for all file I/O
9931 Programmer Reference updated to version 1.06.
9935 ------------------------------------------
9936 Summary of changes for this label: 04_13_01
9938 ACPI CA Core Subsystem:
9940 Restructured support for BufferFields and RegionFields.
9941 BankFields support is now fully operational. All known 32-bit
9942 limitations on field sizes have been removed. Both BufferFields
9943 and (Operation) RegionFields are now supported by the same field
9946 Resource support now supports QWORD address and IO resources. The
9947 16/32/64 bit address structures and the Extended IRQ structure
9948 have been changed to properly handle Source Resource strings.
9950 A ThreadId of -1 is now used to indicate a "mutex not acquired"
9951 condition internally and must never be returned by AcpiOsThreadId.
9952 This reserved value was changed from 0 since Unix systems allow a
9957 Driver code reorganized to enhance portability
9959 Added a kernel configuration option to control ACPI_DEBUG
9961 Fixed the EC driver to honor _GLK.
9963 ASL Compiler, version X2016:
9965 Fixed support for the "FixedHw" keyword. Previously, the FixedHw
9966 address space was set to 0, not 0x7f as it should be.
9968 ------------------------------------------
9969 Summary of changes for this label: 03_13_01
9971 ACPI CA Core Subsystem:
9973 During ACPI initialization, the _SB_._INI method is now run if
9976 Notify handler fix - notifies are deferred until the parent method
9977 completes execution. This fixes the "mutex already acquired"
9978 issue seen occasionally.
9980 Part of the "implicit conversion" rules in ACPI 2.0 have been
9981 found to cause compatibility problems with existing ASL/AML. The
9982 convert "result-to-target-type" implementation has been removed
9983 for stores to method Args and Locals. Source operand conversion
9984 is still fully implemented. Possible changes to ACPI 2.0
9985 specification pending.
9987 Fix to AcpiRsCalculatePciRoutingTableLength to return correct
9990 Fix for compiler warnings for 64-bit compiles.
9994 /proc output aligned for easier parsing.
9996 Release-version compile problem fixed.
9998 New kernel configuration options documented in Configure.help.
10000 IBM 600E - Fixed Sleep button may generate "Invalid <NULL>
10005 Power resource driver integrated with bus manager.
10007 Fixed kernel fault during active cooling for thermal zones.
10011 The source code tree has been restructured.
10015 ------------------------------------------
10016 Summary of changes for this label: 03_02_01
10018 Linux OS Services Layer (OSL):
10020 Major revision of all Linux-specific code.
10022 Modularized all ACPI-specific drivers.
10024 Added new thermal zone and power resource drivers.
10026 Revamped /proc interface (new functionality is under /proc/acpi).
10028 New kernel configuration options.
10030 Linux known issues:
10032 New kernel configuration options not documented in Configure.help
10036 Module dependencies not currently implemented. If used, they
10037 should be loaded in this order: busmgr, power, ec, system,
10038 processor, battery, ac_adapter, button, thermal.
10040 Modules will not load if CONFIG_MODVERSION is set.
10042 IBM 600E - entering S5 may reboot instead of shutting down.
10044 IBM 600E - Sleep button may generate "Invalid <NULL> context"
10047 Some systems may fail with "execution mutex already acquired"
10050 ACPI CA Core Subsystem:
10052 Added a new OSL Interface, AcpiOsGetThreadId. This was required
10053 for the deadlock detection code. Defined to return a non-zero, 32-
10054 bit thread ID for the currently executing thread. May be a non-
10055 zero constant integer on single-thread systems.
10057 Implemented deadlock detection for internal subsystem mutexes. We
10058 may add conditional compilation for this code (debug only) later.
10060 ASL/AML Mutex object semantics are now fully supported. This
10061 includes multiple acquires/releases by owner and support for the
10063 Mutex SyncLevel parameter.
10065 A new "Force Release" mechanism automatically frees all ASL
10066 Mutexes that have been acquired but not released when a thread
10067 exits the interpreter. This forces conformance to the ACPI spec
10068 ("All mutexes must be released when an invocation exits") and
10069 prevents deadlocked ASL threads. This mechanism can be expanded
10070 (later) to monitor other resource acquisitions if OEM ASL code
10071 continues to misbehave (which it will).
10073 Several new ACPI exception codes have been added for the Mutex
10076 Recursive method calls are now allowed and supported (the ACPI
10077 spec does in fact allow recursive method calls.) The number of
10078 recursive calls is subject to the restrictions imposed by the
10079 SERIALIZED method keyword and SyncLevel (ACPI 2.0) method
10082 Implemented support for the SyncLevel parameter for control
10083 methods (ACPI 2.0 feature)
10085 Fixed a deadlock problem when multiple threads attempted to use
10088 Fixed a problem where the string length of a String package
10089 element was not always set in a package returned from
10090 AcpiEvaluateObject.
10092 Fixed a problem where the length of a String package element was
10093 not always included in the length of the overall package returned
10094 from AcpiEvaluateObject.
10096 Added external interfaces (Acpi*) to the ACPI debug memory
10097 manager. This manager keeps a list of all outstanding
10098 allocations, and can therefore detect memory leaks and attempts to
10099 free memory blocks more than once. Useful for code such as the
10100 power manager, etc. May not be appropriate for device drivers.
10101 Performance with the debug code enabled is slow.
10103 The ACPI Global Lock is now an optional hardware element.
10105 ASL Compiler Version X2015:
10107 Integrated changes to allow the compiler to be generated on
10108 multiple platforms.
10110 Linux makefile added to generate the compiler on Linux
10114 All platform-specific headers have been moved to their own
10115 subdirectory, Include/Platform.
10117 New source file added, Interpreter/ammutex.c
10119 New header file, Include/acstruct.h
10123 The programmer reference has been updated for the following new
10124 interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree
10126 ------------------------------------------
10127 Summary of changes for this label: 02_08_01
10129 Core ACPI CA Subsystem: Fixed a problem where an error was
10130 incorrectly returned if the return resource buffer was larger than
10131 the actual data (in the resource interfaces).
10133 References to named objects within packages are resolved to the
10135 full pathname string before packages are returned directly (via
10136 the AcpiEvaluateObject interface) or indirectly via the resource
10139 Linux OS Services Layer (OSL):
10141 Improved /proc battery interface.
10144 Added C-state debugging output and other miscellaneous fixes.
10146 ASL Compiler Version X2014:
10148 All defined method arguments can now be used as local variables,
10149 including the ones that are not actually passed in as parameters.
10150 The compiler tracks initialization of the arguments and issues an
10151 exception if they are used without prior assignment (just like
10154 The -o option now specifies a filename prefix that is used for all
10155 output files, including the AML output file. Otherwise, the
10156 default behavior is as follows: 1) the AML goes to the file
10157 specified in the DSDT. 2) all other output files use the input
10158 source filename as the base.
10160 ------------------------------------------
10161 Summary of changes for this label: 01_25_01
10163 Core ACPI CA Subsystem: Restructured the implementation of object
10164 store support within the interpreter. This includes support for
10165 the Store operator as well as any ASL operators that include a
10168 Partially implemented support for Implicit Result-to-Target
10169 conversion. This is when a result object is converted on the fly
10170 to the type of an existing target object. Completion of this
10171 support is pending further analysis of the ACPI specification
10172 concerning this matter.
10174 CPU-specific code has been removed from the subsystem (hardware
10177 New Power Management Timer functions added
10179 Linux OS Services Layer (OSL): Moved system state transition code
10180 to the core, fixed it, and modified Linux OSL accordingly.
10182 Fixed C2 and C3 latency calculations.
10185 We no longer use the compilation date for the version message on
10186 initialization, but retrieve the version from AcpiGetSystemInfo().
10188 Incorporated for fix Sony VAIO machines.
10190 Documentation: The Programmer Reference has been updated and
10194 ASL Compiler: Version X2013: Fixed a problem where the line
10195 numbering and error reporting could get out of sync in the
10196 presence of multiple include files.
10198 ------------------------------------------
10199 Summary of changes for this label: 01_15_01
10201 Core ACPI CA Subsystem:
10203 Implemented support for type conversions in the execution of the
10204 ASL Concatenate operator (The second operand is converted to
10205 match the type of the first operand before concatenation.)
10207 Support for implicit source operand conversion is partially
10208 implemented. The ASL source operand types Integer, Buffer, and
10209 String are freely interchangeable for most ASL operators and are
10210 converted by the interpreter on the fly as required. Implicit
10211 Target operand conversion (where the result is converted to the
10212 target type before storing) is not yet implemented.
10214 Support for 32-bit and 64-bit BCD integers is implemented.
10216 Problem fixed where a field read on an aligned field could cause a
10217 read past the end of the field.
10219 New exception, AE_AML_NO_RETURN_VALUE, is returned when a method
10220 does not return a value, but the caller expects one. (The ASL
10221 compiler flags this as a warning.)
10226 1. Static typechecking of all operands is implemented. This
10227 prevents the use of invalid objects (such as using a Package where
10228 an Integer is required) at compile time instead of at interpreter
10230 2. The ASL source line is printed with ALL errors and warnings.
10231 3. Bug fix for source EOF without final linefeed.
10232 4. Debug option is split into a parse trace and a namespace trace.
10233 5. Namespace output option (-n) includes initial values for
10234 integers and strings.
10235 6. Parse-only option added for quick syntax checking.
10236 7. Compiler checks for duplicate ACPI name declarations
10239 1. Relaxed typechecking to allow interchangeability between
10240 strings, integers, and buffers. These types are now converted by
10241 the interpreter at runtime.
10242 2. Compiler reports time taken by each internal subsystem in the
10246 ------------------------------------------
10247 Summary of changes for this label: 12_14_00
10251 This is the first official release of the compiler. Since the
10252 compiler requires elements of the Core Subsystem, this label
10253 synchronizes everything.
10255 ------------------------------------------
10256 Summary of changes for this label: 12_08_00
10259 Fixed a problem where named references within the ASL definition
10260 of both OperationRegions and CreateXXXFields did not work
10261 properly. The symptom was an AE_AML_OPERAND_TYPE during
10262 initialization of the region/field. This is similar (but not
10263 related internally) to the problem that was fixed in the last
10266 Implemented both 32-bit and 64-bit support for the BCD ASL
10267 functions ToBCD and FromBCD.
10269 Updated all legal headers to include "2000" in the copyright
10272 ------------------------------------------
10273 Summary of changes for this label: 12_01_00
10275 Fixed a problem where method invocations within the ASL definition
10276 of both OperationRegions and CreateXXXFields did not work
10277 properly. The symptom was an AE_AML_OPERAND_TYPE during
10278 initialization of the region/field:
10280 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments
10281 [DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s)
10284 Fixed a problem where operators with more than one nested
10285 subexpression would fail. The symptoms were varied, by mostly
10286 AE_AML_OPERAND_TYPE errors. This was actually a rather serious
10287 problem that has gone unnoticed until now.
10289 Subtract (Add (1,2), Multiply (3,4))
10291 Fixed a problem where AcpiGetHandle didn't quite get fixed in the
10292 previous build (The prefix part of a relative path was handled
10295 Fixed a problem where Operation Region initialization failed if
10296 the operation region name was a "namepath" instead of a simple
10297 "nameseg". Symptom was an AE_NO_OPERAND error.
10299 Fixed a problem where an assignment to a local variable via the
10300 indirect RefOf mechanism only worked for the first such
10301 assignment. Subsequent assignments were ignored.
10303 ------------------------------------------
10304 Summary of changes for this label: 11_15_00
10306 ACPI 2.0 table support with backwards support for ACPI 1.0 and the
10307 0.71 extensions. Note: although we can read ACPI 2.0 BIOS tables,
10308 the AML interpreter does NOT have support for the new 2.0 ASL
10309 grammar terms at this time.
10311 All ACPI hardware access is via the GAS structures in the ACPI 2.0
10314 All physical memory addresses across all platforms are now 64 bits
10315 wide. Logical address width remains dependent on the platform
10318 AcpiOsMapMemory interface changed to a 64-bit physical address.
10320 The AML interpreter integer size is now 64 bits, as per the ACPI
10323 For backwards compatibility with ACPI 1.0, ACPI tables with a
10324 revision number less than 2 use 32-bit integers only.
10326 Fixed a problem where the evaluation of OpRegion operands did not
10327 always resolve them to numbers properly.
10329 ------------------------------------------
10330 Summary of changes for this label: 10_20_00
10332 Fix for CBN_._STA issue. This fix will allow correct access to
10333 CBN_ OpRegions when the _STA returns 0x8.
10335 Support to convert ACPI constants (Ones, Zeros, One) to actual
10336 values before a package object is returned
10338 Fix for method call as predicate to if/while construct causing
10339 incorrect if/while behavior
10341 Fix for Else block package lengths sometimes calculated wrong (if
10344 Fix for Processor object length field, was always zero
10346 Table load abort if FACP sanity check fails
10348 Fix for problem with Scope(name) if name already exists
10350 Warning emitted if a named object referenced cannot be found
10351 (resolved) during method execution.
10357 ------------------------------------------
10358 Summary of changes for this label: 9_29_00
10360 New table initialization interfaces: AcpiInitializeSubsystem no
10361 longer has any parameters AcpiFindRootPointer - Find the RSDP (if
10362 necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP-
10363 >RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by
10366 Note: These interface changes require changes to all existing OSDs
10368 The PCI_Config default address space handler is always installed
10369 at the root namespace object.
10371 -------------------------------------------
10372 Summary of changes for this label: 09_15_00
10374 The new initialization architecture is implemented. New
10375 interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize)
10376 AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace
10378 (Namespace is automatically loaded when a table is loaded)
10380 The ACPI_OPERAND_OBJECT has been optimized to shrink its size from
10381 52 bytes to 32 bytes. There is usually one of these for every
10382 namespace object, so the memory savings is significant.
10384 Implemented just-in-time evaluation of the CreateField operators.
10386 Bug fixes for IA-64 support have been integrated.
10388 Additional code review comments have been implemented
10390 The so-called "third pass parse" has been replaced by a final walk
10391 through the namespace to initialize all operation regions (address
10392 spaces) and fields that have not yet been initialized during the
10393 execution of the various _INI and REG methods.
10395 New file - namespace/nsinit.c
10397 -------------------------------------------
10398 Summary of changes for this label: 09_01_00
10400 Namespace manager data structures have been reworked to change the
10401 primary object from a table to a single object. This has
10402 resulted in dynamic memory savings of 3X within the namespace and
10403 2X overall in the ACPI CA subsystem.
10405 Fixed problem where the call to AcpiEvFindPciRootBuses was
10406 inadvertently left commented out.
10408 Reduced the warning count when generating the source with the GCC
10411 Revision numbers added to each module header showing the
10412 SourceSafe version of the file. Please refer to this version
10413 number when giving us feedback or comments on individual modules.
10415 The main object types within the subsystem have been renamed to
10416 clarify their purpose:
10418 ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT
10419 ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT
10420 ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE
10422 NOTE: no changes to the initialization sequence are included in
10425 -------------------------------------------
10426 Summary of changes for this label: 08_23_00
10428 Fixed problem where TerminateControlMethod was being called
10429 multiple times per method
10431 Fixed debugger problem where single stepping caused a semaphore to
10434 Improved performance through additional parse object caching -
10435 added ACPI_EXTENDED_OP type
10437 -------------------------------------------
10438 Summary of changes for this label: 08_10_00
10440 Parser/Interpreter integration: Eliminated the creation of
10441 complete parse trees for ACPI tables and control methods.
10442 Instead, parse subtrees are created and then deleted as soon as
10443 they are processed (Either entered into the namespace or executed
10444 by the interpreter). This reduces the use of dynamic kernel
10445 memory significantly. (about 10X)
10447 Exception codes broken into classes and renumbered. Be sure to
10448 recompile all code that includes acexcep.h. Hopefully we won't
10449 have to renumber the codes again now that they are split into
10450 classes (environment, programmer, AML code, ACPI table, and
10453 Fixed some additional alignment issues in the Resource Manager
10456 Implemented semaphore tracking in the AcpiExec utility, and fixed
10457 several places where mutexes/semaphores were being unlocked
10458 without a corresponding lock operation. There are no known
10459 semaphore or mutex "leaks" at this time.
10461 Fixed the case where an ASL Return operator is used to return an
10464 -------------------------------------------
10465 Summary of changes for this label: 07_28_00
10467 Fixed a problem with the way addresses were calculated in
10468 AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem
10469 manifested itself when a Field was created with WordAccess or
10470 DwordAccess, but the field unit defined within the Field was less
10472 than a Word or Dword.
10474 Fixed a problem in AmlDumpOperands() module's loop to pull
10475 operands off of the operand stack to display information. The
10476 problem manifested itself as a TLB error on 64-bit systems when
10477 accessing an operand stack with two or more operands.
10479 Fixed a problem with the PCI configuration space handlers where
10480 context was getting confused between accesses. This required a
10481 change to the generic address space handler and address space
10482 setup definitions. Handlers now get both a global handler context
10483 (this is the one passed in by the user when executing
10484 AcpiInstallAddressSpaceHandler() and a specific region context
10485 that is unique to each region (For example, the _ADR, _SEG and
10486 _BBN values associated with a specific region). The generic
10487 function definitions have changed to the following:
10489 typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function,
10490 UINT32 Address, UINT32 BitWidth, UINT32 *Value, void
10491 *HandlerContext, // This used to be void *Context void
10492 *RegionContext); // This is an additional parameter
10494 typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE
10495 RegionHandle, UINT32 Function, void *HandlerContext, void
10496 **RegionContext); // This used to be **ReturnContext
10498 -------------------------------------------
10499 Summary of changes for this label: 07_21_00
10501 Major file consolidation and rename. All files within the
10502 interpreter have been renamed as well as most header files. This
10503 was done to prevent collisions with existing files in the host
10504 OSs -- filenames such as "config.h" and "global.h" seem to be
10505 quite common. The VC project files have been updated. All
10506 makefiles will require modification.
10508 The parser/interpreter integration continues in Phase 5 with the
10509 implementation of a complete 2-pass parse (the AML is parsed
10510 twice) for each table; This avoids the construction of a huge
10511 parse tree and therefore reduces the amount of dynamic memory
10512 required by the subsystem. Greater use of the parse object cache
10513 means that performance is unaffected.
10515 Many comments from the two code reviews have been rolled in.
10517 The 64-bit alignment support is complete.
10519 -------------------------------------------
10520 Summary of changes for this label: 06_30_00
10522 With a nod and a tip of the hat to the technology of yesteryear,
10523 we've added support in the source code for 80 column output
10524 devices. The code is now mostly constrained to 80 columns or
10525 less to support environments and editors that 1) cannot display
10526 or print more than 80 characters on a single line, and 2) cannot
10527 disable line wrapping.
10529 A major restructuring of the namespace data structure has been
10530 completed. The result is 1) cleaner and more
10531 understandable/maintainable code, and 2) a significant reduction
10532 in the dynamic memory requirement for each named ACPI object
10535 -------------------------------------------
10536 Summary of changes for this label: 06_23_00
10538 Linux support has been added. In order to obtain approval to get
10539 the ACPI CA subsystem into the Linux kernel, we've had to make
10540 quite a few changes to the base subsystem that will affect all
10541 users (all the changes are generic and OS- independent). The
10542 effects of these global changes have been somewhat far reaching.
10543 Files have been merged and/or renamed and interfaces have been
10544 renamed. The major changes are described below.
10546 Osd* interfaces renamed to AcpiOs* to eliminate namespace
10547 pollution/confusion within our target kernels. All OSD
10548 interfaces must be modified to match the new naming convention.
10550 Files merged across the subsystem. A number of the smaller source
10551 and header files have been merged to reduce the file count and
10552 increase the density of the existing files. There are too many
10553 to list here. In general, makefiles that call out individual
10554 files will require rebuilding.
10556 Interpreter files renamed. All interpreter files now have the
10557 prefix am* instead of ie* and is*.
10559 Header files renamed: The acapi.h file is now acpixf.h. The
10560 acpiosd.h file is now acpiosxf.h. We are removing references to
10561 the acronym "API" since it is somewhat windowsy. The new name is
10562 "external interface" or xface or xf in the filenames.j
10565 All manifest constants have been forced to upper case (some were
10566 mixed case.) Also, the string "ACPI_" has been prepended to many
10567 (not all) of the constants, typedefs, and structs.
10569 The globals "DebugLevel" and "DebugLayer" have been renamed
10570 "AcpiDbgLevel" and "AcpiDbgLayer" respectively.
10572 All other globals within the subsystem are now prefixed with
10573 "AcpiGbl_" Internal procedures within the subsystem are now
10574 prefixed with "Acpi" (with only a few exceptions). The original
10575 two-letter abbreviation for the subcomponent remains after "Acpi"
10576 - for example, CmCallocate became AcpiCmCallocate.
10578 Added a source code translation/conversion utility. Used to
10579 generate the Linux source code, it can be modified to generate
10580 other types of source as well. Can also be used to cleanup
10581 existing source by removing extraneous spaces and blank lines.
10582 Found in tools/acpisrc/*
10584 OsdUnMapMemory was renamed to OsdUnmapMemory and then
10585 AcpiOsUnmapMemory. (UnMap became Unmap).
10587 A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore.
10588 When set to one, this indicates that the caller wants to use the
10590 semaphore as a mutex, not a counting semaphore. ACPI CA uses
10591 both types. However, implementers of this call may want to use
10592 different OS primitives depending on the type of semaphore
10593 requested. For example, some operating systems provide separate
10595 "mutex" and "semaphore" interfaces - where the mutex interface is
10596 much faster because it doesn't have all the overhead of a full
10597 semaphore implementation.
10599 Fixed a deadlock problem where a method that accesses the PCI
10600 address space can block forever if it is the first access to the
10603 -------------------------------------------
10604 Summary of changes for this label: 06_02_00
10606 Support for environments that cannot handle unaligned data
10607 accesses (e.g. firmware and OS environments devoid of alignment
10608 handler technology namely SAL/EFI and the IA-64 Linux kernel) has
10609 been added (via configurable macros) in these three areas: -
10610 Transfer of data from the raw AML byte stream is done via byte
10611 moves instead of word/dword/qword moves. - External objects are
10612 aligned within the user buffer, including package elements (sub-
10613 objects). - Conversion of name strings to UINT32 Acpi Names is now
10616 The Store operator was modified to mimic Microsoft's
10617 implementation when storing to a Buffer Field.
10619 Added a check of the BM_STS bit before entering C3.
10621 The methods subdirectory has been obsoleted and removed. A new
10622 file, cmeval.c subsumes the functionality.
10624 A 16-bit (DOS) version of AcpiExec has been developed. The
10625 makefile is under the acpiexec directory.