1 ----------------------------------------
2 12 January 2011. Summary of changes for version 20110112:
4 1) ACPI CA Core Subsystem:
6 Fixed a race condition between method execution and namespace walks that can
7 possibly cause a fault. The problem was apparently introduced in version
8 20100528 as a result of a performance optimization that reduces the number of
9 namespace walks upon method exit by using the delete_namespace_subtree
10 function instead of the delete_namespace_by_owner function used previously.
11 Bug is a missing namespace lock in the delete_namespace_subtree function.
14 Fixed several issues and a possible fault with the automatic "serialized"
15 method support. History: This support changes a method to "serialized" on the
16 fly if the method generates an AE_ALREADY_EXISTS error, indicating the
17 possibility that it cannot handle reentrancy. This fix repairs a couple of
18 issues seen in the field, especially on machines with many cores:
20 1) Delete method children only upon the exit of the last thread,
21 so as to not delete objects out from under other running threads
22 (and possibly causing a fault.)
23 2) Set the "serialized" bit for the method only upon the exit of the
24 Last thread, so as to not cause deadlock when running threads
26 3) Cleanup the use of the AML "MethodFlags" and internal method flags
27 so that there is no longer any confusion between the two.
29 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com.
31 Debugger: Now lock the namespace for duration of a namespace dump. Prevents
32 issues if the namespace is changing dynamically underneath the debugger.
33 Especially affects temporary namespace nodes, since the debugger displays
36 Updated the ordering of include files. The ACPICA headers should appear
37 before any compiler-specific headers (stdio.h, etc.) so that acenv.h can set
38 any necessary compiler-specific defines, etc. Affects the ACPI-related tools
41 Updated all ACPICA copyrights and signons to 2011. Added the 2011 copyright
42 to all module headers and signons, including the Linux header. This affects
43 virtually every file in the ACPICA core subsystem, iASL compiler, and all
46 Added project files for MS Visual Studio 2008 (VC++ 9.0). The original
47 project files for VC++ 6.0 are now obsolete. New project files can be found
48 under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for
51 Example Code and Data Size: These are the sizes for the OS-independent
52 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
53 debug version of the code includes the debug output trace mechanism and has a
54 much larger code and data size.
56 Previous Release (VC 6.0):
57 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
58 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
59 Current Release (VC 9.0):
60 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
61 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
63 2) iASL Compiler/Disassembler and Tools:
65 iASL: Added generic data types to the Data Table compiler. Add "generic" data
66 types such as UINT32, String, Unicode, etc., to simplify the generation of
67 platform-defined tables such as UEFI. Lin Ming.
69 iASL: Added listing support for the Data Table Compiler. Adds listing support
70 (-l) to display actual binary output for each line of input code.
72 ----------------------------------------
73 09 December 2010. Summary of changes for version 20101209:
75 1) ACPI CA Core Subsystem:
77 Completed the major overhaul of the GPE support code that was begun in July
78 2010. Major features include: removal of _PRW execution in ACPICA (host
79 executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing,
80 changes to existing interfaces, simplification of GPE handler operation, and
81 a handful of new interfaces:
87 One new file, evxfgpe.c to consolidate all external GPE interfaces.
89 See the ACPICA Programmer Reference for full details and programming
90 information. See the new section 4.4 "General Purpose Event (GPE) Support"
91 for a full overview, and section 8.7 "ACPI General Purpose Event Management"
92 for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin Ming,
93 Bob Moore, Rafael Wysocki.
95 Implemented a new GPE feature for Windows compatibility, the "Implicit Wake
96 GPE Notify". This feature will automatically issue a Notify(2) on a device
97 when a Wake GPE is received if there is no corresponding GPE method or
98 handler. ACPICA BZ 870.
100 Fixed a problem with the Scope() operator during table parse and load phase.
101 During load phase (table load or method execution), the scope operator should
102 not enter the target into the namespace. Instead, it should open a new scope
103 at the target location. Linux BZ 19462, ACPICA BZ 882.
105 Example Code and Data Size: These are the sizes for the OS-independent
106 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
107 debug version of the code includes the debug output trace mechanism and has a
108 much larger code and data size.
111 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
112 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
114 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
115 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
117 2) iASL Compiler/Disassembler and Tools:
119 iASL: Relax the alphanumeric restriction on _CID strings. These strings are
120 "bus-specific" per the ACPI specification, and therefore any characters are
121 acceptable. The only checks that can be performed are for a null string and
122 perhaps for a leading asterisk. ACPICA BZ 886.
124 iASL: Fixed a problem where a syntax error that caused a premature EOF
125 condition on the source file emitted a very confusing error message. The
126 premature EOF is now detected correctly. ACPICA BZ 891.
128 Disassembler: Decode the AccessSize within a Generic Address Structure (byte
129 access, word access, etc.) Note, this field does not allow arbitrary bit
130 access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword.
132 New: AcpiNames utility - Example namespace dump utility. Shows an example of
133 ACPICA configuration for a minimal namespace dump utility. Uses table and
134 namespace managers, but no AML interpreter. Does not add any functionality
135 over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to
136 partition and configure ACPICA. ACPICA BZ 883.
138 AML Debugger: Increased the debugger buffer size for method return objects.
139 Was 4K, increased to 16K. Also enhanced error messages for debugger method
140 execution, including the buffer overflow case.
142 ----------------------------------------
143 13 October 2010. Summary of changes for version 20101013:
145 1) ACPI CA Core Subsystem:
147 Added support to clear the PCIEXP_WAKE event. When clearing ACPI events, now
148 clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via
149 HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880.
151 Changed the type of the predefined namespace object _TZ from ThermalZone to
152 Device. This was found to be confusing to the host software that processes
153 the various thermal zones, since _TZ is not really a ThermalZone. However, a
154 Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui
157 Added Windows Vista SP2 to the list of supported _OSI strings. The actual
158 string is "Windows 2006 SP2".
160 Eliminated duplicate code in AcpiUtExecute* functions. Now that the nsrepair
161 code automatically repairs _HID-related strings, this type of code is no
162 longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ 878.
164 Example Code and Data Size: These are the sizes for the OS-independent
165 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
166 debug version of the code includes the debug output trace mechanism and has a
167 much larger code and data size.
170 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
171 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
173 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
174 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
176 2) iASL Compiler/Disassembler and Tools:
178 iASL: Implemented additional compile-time validation for _HID strings. The
179 non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the length of
180 the string must be exactly seven or eight characters. For both _HID and _CID
181 strings, all characters must be alphanumeric. ACPICA BZ 874.
183 iASL: Allow certain "null" resource descriptors. Some BIOS code creates
184 descriptors that are mostly or all zeros, with the expectation that they will
185 be filled in at runtime. iASL now allows this as long as there is a "resource
186 tag" (name) associated with the descriptor, which gives the ASL a handle
187 needed to modify the descriptor. ACPICA BZ 873.
189 Added single-thread support to the generic Unix application OSL. Primarily
190 for iASL support, this change removes the use of semaphores in the single-
191 threaded ACPICA tools/applications - increasing performance. The
192 _MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED
193 option. ACPICA BZ 879.
195 AcpiExec: several fixes for the 64-bit version. Adds XSDT support and support
196 for 64-bit DSDT/FACS addresses in the FADT. Lin Ming.
198 iASL: Moved all compiler messages to a new file, aslmessages.h.
200 ----------------------------------------
201 15 September 2010. Summary of changes for version 20100915:
203 1) ACPI CA Core Subsystem:
205 Removed the AcpiOsDerivePciId OSL interface. The various host implementations
206 of this function were not OS-dependent and are now obsolete and can be
207 removed from all host OSLs. This function has been replaced by
208 AcpiHwDerivePciId, which is now part of the ACPICA core code.
209 AcpiHwDerivePciId has been implemented without recursion. Adds one new
210 module, hwpci.c. ACPICA BZ 857.
212 Implemented a dynamic repair for _HID and _CID strings. The following
213 problems are now repaired at runtime: 1) Remove a leading asterisk in the
214 string, and 2) the entire string is uppercased. Both repairs are in
215 accordance with the ACPI specification and will simplify host driver code.
218 The ACPI_THREAD_ID type is no longer configurable, internally it is now
219 always UINT64. This simplifies the ACPICA code, especially any printf output.
220 UINT64 is the only common data type for all thread_id types across all
221 operating systems. It is now up to the host OSL to cast the native thread_id
222 type to UINT64 before returning the value to ACPICA (via AcpiOsGetThreadId).
225 Added the ACPI_INLINE type to enhance the ACPICA configuration. The "inline"
226 keyword is not standard across compilers, and this type allows inline to be
227 configured on a per-compiler basis. Lin Ming.
229 Made the system global AcpiGbl_SystemAwakeAndRunning publically available.
230 Added an extern for this boolean in acpixf.h. Some hosts utilize this value
231 during suspend/restore operations. ACPICA BZ 869.
233 All code that implements error/warning messages with the "ACPI:" prefix has
234 been moved to a new module, utxferror.c.
236 The UINT64_OVERLAY was moved to utmath.c, which is the only module where it
237 is used. ACPICA BZ 829. Lin Ming, Bob Moore.
239 Example Code and Data Size: These are the sizes for the OS-independent
240 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
241 debug version of the code includes the debug output trace mechanism and has a
242 much larger code and data size.
245 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
246 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
248 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
249 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
251 2) iASL Compiler/Disassembler and Tools:
253 iASL/Disassembler: Write ACPI errors to stderr instead of the output file.
254 This keeps the output files free of random error messages that may originate
255 from within the namespace/interpreter code. Used this opportunity to merge
256 all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ
257 866. Lin Ming, Bob Moore.
259 Tools: update some printfs for ansi warnings on size_t. Handle width change
260 of size_t on 32-bit versus 64-bit generations. Lin Ming.
262 ----------------------------------------
263 06 August 2010. Summary of changes for version 20100806:
265 1) ACPI CA Core Subsystem:
267 Designed and implemented a new host interface to the _OSI support code. This
268 will allow the host to dynamically add or remove multiple _OSI strings, as
269 well as install an optional handler that is called for each _OSI invocation.
270 Also added a new AML debugger command, 'osi' to display and modify the global
271 _OSI string table, and test support in the AcpiExec utility. See the ACPICA
272 reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836.
274 AcpiInstallInterface - Add an _OSI string.
275 AcpiRemoveInterface - Delete an _OSI string.
276 AcpiInstallInterfaceHandler - Install optional _OSI handler.
278 AcpiOsValidateInterface - no longer used.
280 source/components/utilities/utosi.c
282 Re-introduced the support to enable multi-byte transfers for Embedded
283 Controller (EC) operation regions. A reported problem was found to be a bug
284 in the host OS, not in the multi-byte support. Previously, the maximum data
285 size passed to the EC operation region handler was a single byte. There are
286 often EC Fields larger than one byte that need to be transferred, and it is
287 useful for the EC driver to lock these as a single transaction. This change
288 enables single transfers larger than 8 bits. This effectively changes the
289 access to the EC space from ByteAcc to AnyAcc, and will probably require
290 changes to the host OS Embedded Controller driver to enable 16/32/64/256-bit
291 transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming.
293 Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The
294 prototype in acpiosxf.h had the output value pointer as a (void *).
295 It should be a (UINT64 *). This may affect some host OSL code.
297 Fixed a couple problems with the recently modified Linux makefiles for iASL
298 and AcpiExec. These new makefiles place the generated object files in the
299 local directory so that there can be no collisions between the files that are
300 shared between them that are compiled with different options.
302 Example Code and Data Size: These are the sizes for the OS-independent
303 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
304 debug version of the code includes the debug output trace mechanism and has a
305 much larger code and data size.
308 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
309 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
311 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
312 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
314 2) iASL Compiler/Disassembler and Tools:
316 iASL/Disassembler: Added a new option (-da, "disassemble all") to load the
317 namespace from and disassemble an entire group of AML files. Useful for
318 loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn) and
319 disassembling with one simple command. ACPICA BZ 865. Lin Ming.
321 iASL: Allow multiple invocations of -e option. This change allows multiple
322 uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ 834.
325 ----------------------------------------
326 02 July 2010. Summary of changes for version 20100702:
328 1) ACPI CA Core Subsystem:
330 Implemented several updates to the recently added GPE reference count
331 support. The model for "wake" GPEs is changing to give the host OS complete
332 control of these GPEs. Eventually, the ACPICA core will not execute any _PRW
333 methods, since the host already must execute them. Also, additional changes
334 were made to help ensure that the reference counts are kept in proper
335 synchronization with reality. Rafael J. Wysocki.
337 1) Ensure that GPEs are not enabled twice during initialization.
338 2) Ensure that GPE enable masks stay in sync with the reference count.
339 3) Do not inadvertently enable GPEs when writing GPE registers.
340 4) Remove the internal wake reference counter and add new AcpiGpeWakeup
341 interface. This interface will set or clear individual GPEs for wakeup.
342 5) Remove GpeType argument from AcpiEnable and AcpiDisable. These interfaces
343 are now used for "runtime" GPEs only.
345 Changed the behavior of the GPE install/remove handler interfaces. The GPE is
346 no longer disabled during this process, as it was found to cause problems on
347 some machines. Rafael J. Wysocki.
349 Reverted a change introduced in version 20100528 to enable Embedded
350 Controller multi-byte transfers. This change was found to cause problems with
351 Index Fields and possibly Bank Fields. It will be reintroduced when these
352 problems have been resolved.
354 Fixed a problem with references to Alias objects within Package Objects. A
355 reference to an Alias within the definition of a Package was not always
356 resolved properly. Aliases to objects like Processors, Thermal zones, etc.
357 were resolved to the actual object instead of a reference to the object as it
358 should be. Package objects are only allowed to contain integer, string,
359 buffer, package, and reference objects. Redhat bugzilla 608648.
361 Example Code and Data Size: These are the sizes for the OS-independent
362 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
363 debug version of the code includes the debug output trace mechanism and has a
364 much larger code and data size.
367 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
368 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
370 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
371 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
373 2) iASL Compiler/Disassembler and Tools:
375 iASL: Implemented a new compiler subsystem to allow definition and
376 compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc. These
377 are called "ACPI Data Tables", and the new compiler is the "Data Table
378 Compiler". This compiler is intended to simplify the existing error-prone
379 process of creating these tables for the BIOS, as well as allowing the
380 disassembly, modification, recompilation, and override of existing ACPI data
381 tables. See the iASL User Guide for detailed information.
383 iASL: Implemented a new Template Generator option in support of the new Data
384 Table Compiler. This option will create examples of all known ACPI tables
385 that can be used as the basis for table development. See the iASL
386 documentation and the -T option.
388 Disassembler and headers: Added support for the WDDT ACPI table (Watchdog
391 Updated the Linux makefiles for iASL and AcpiExec to place the generated
392 object files in the local directory so that there can be no collisions
393 between the shared files between them that are generated with different
396 Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec. Use
397 the #define __APPLE__ to enable this support.
399 ----------------------------------------
400 28 May 2010. Summary of changes for version 20100528:
402 Note: The ACPI 4.0a specification was released on April 5, 2010 and is
403 available at www.acpi.info. This is primarily an errata release.
405 1) ACPI CA Core Subsystem:
407 Undefined ACPI tables: We are looking for the definitions for the following
408 ACPI tables that have been seen in the field: ATKG, IEIT, GSCI.
410 Implemented support to enable multi-byte transfers for Embedded Controller
411 (EC) operation regions. Previously, the maximum data size passed to the EC
412 operation region handler was a single byte. There are often EC Fields larger
413 than one byte that need to be transferred, and it is useful for the EC driver
414 to lock these as a single transaction. This change enables single transfers
415 larger than 8 bits. This effectively changes the access to the EC space from
416 ByteAcc to AnyAcc, and will probably require changes to the host OS Embedded
417 Controller driver to enable 16/32/64/256-bit transfers in addition to 8-bit
418 transfers. Alexey Starikovskiy, Lin Ming
420 Implemented a performance enhancement for namespace search and access. This
421 change enhances the performance of namespace searches and walks by adding a
422 backpointer to the parent in each namespace node. On large namespaces, this
423 change can improve overall ACPI performance by up to 9X. Adding a pointer to
424 each namespace node increases the overall size of the internal namespace by
425 about 5%, since each namespace entry usually consists of both a namespace
426 node and an ACPI operand object. However, this is the first growth of the
427 namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy.
429 Implemented a performance optimization that reduces the number of namespace
430 walks. On control method exit, only walk the namespace if the method is known
431 to have created namespace objects outside of its local scope. Previously, the
432 entire namespace was traversed on each control method exit. This change can
433 improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob Moore.
435 Added support to truncate I/O addresses to 16 bits for Windows compatibility.
436 Some ASL code has been seen in the field that inadvertently has bits set
437 above bit 15. This feature is optional and is enabled if the BIOS requests
438 any Windows OSI strings. It can also be enabled by the host OS. Matthew
441 Added support to limit the maximum time for the ASL Sleep() operator. To
442 prevent accidental deep sleeps, limit the maximum time that Sleep() will
443 actually sleep. Configurable, the default maximum is two seconds. ACPICA
446 Added run-time validation support for the _WDG and_WED Microsoft predefined
447 methods. These objects are defined by "Windows Instrumentation", and are not
448 part of the ACPI spec. ACPICA BZ 860.
450 Expanded all statistic counters used during namespace and device
451 initialization from 16 to 32 bits in order to support very large namespaces.
453 Replaced all instances of %d in printf format specifiers with %u since nearly
454 all integers in ACPICA are unsigned.
456 Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly returned
459 Example Code and Data Size: These are the sizes for the OS-independent
460 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
461 debug version of the code includes the debug output trace mechanism and has a
462 much larger code and data size.
465 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
466 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
468 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
469 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
471 2) iASL Compiler/Disassembler and Tools:
473 iASL: Added compiler support for the _WDG and_WED Microsoft predefined
474 methods. These objects are defined by "Windows Instrumentation", and are not
475 part of the ACPI spec. ACPICA BZ 860.
477 AcpiExec: added option to disable the memory tracking mechanism. The -dt
478 option will disable the tracking mechanism, which improves performance
481 AcpiExec: Restructured the command line options into -d (disable) and -e
484 ----------------------------------------
485 28 April 2010. Summary of changes for version 20100428:
487 1) ACPI CA Core Subsystem:
489 Implemented GPE support for dynamically loaded ACPI tables. For all GPEs,
490 including FADT-based and GPE Block Devices, execute any _PRW methods in the
491 new table, and process any _Lxx/_Exx GPE methods in the new table. Any
492 runtime GPE that is referenced by an _Lxx/_Exx method in the new table is
493 immediately enabled. Handles the FADT-defined GPEs as well as GPE Block
494 Devices. Provides compatibility with other ACPI implementations. Two new
495 files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob Moore.
497 Fixed a regression introduced in version 20100331 within the table manager
498 where initial table loading could fail. This was introduced in the fix for
499 AcpiReallocateRootTable. Also, renamed some of fields in the table manager
500 data structures to clarify their meaning and use.
502 Fixed a possible allocation overrun during internal object copy in
503 AcpiUtCopySimpleObject. The original code did not correctly handle the case
504 where the object to be copied was a namespace node. Lin Ming. ACPICA BZ 847.
506 Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a
507 possible access beyond end-of-allocation. Also, now fully validate descriptor
508 (size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847
510 Example Code and Data Size: These are the sizes for the OS-independent
511 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
512 debug version of the code includes the debug output trace mechanism and has a
513 much larger code and data size.
516 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
517 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
519 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
520 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
522 2) iASL Compiler/Disassembler and Tools:
524 iASL: Implemented Min/Max/Len/Gran validation for address resource
525 descriptors. This change implements validation for the address fields that
526 are common to all address-type resource descriptors. These checks are
527 implemented: Checks for valid Min/Max, length within the Min/Max window,
528 valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as per
529 table 6-40 in the ACPI 4.0a specification. Also split the large aslrestype1.c
530 and aslrestype2.c files into five new files. ACPICA BZ 840.
532 iASL: Added support for the _Wxx predefined names. This support was missing
533 and these names were not recognized by the compiler as valid predefined
534 names. ACPICA BZ 851.
536 iASL: Added an error for all predefined names that are defined to return no
537 value and thus must be implemented as Control Methods. These include all of
538 the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous
539 names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856.
541 iASL: Implemented the -ts option to emit hex AML data in ASL format, as an
542 ASL Buffer. Allows ACPI tables to be easily included within ASL files, to be
543 dynamically loaded via the Load() operator. Also cleaned up output for the -
544 ta and -tc options. ACPICA BZ 853.
546 Tests: Added a new file with examples of extended iASL error checking.
547 Demonstrates the advanced error checking ability of the iASL compiler.
548 Available at tests/misc/badcode.asl.
550 ----------------------------------------
551 31 March 2010. Summary of changes for version 20100331:
553 1) ACPI CA Core Subsystem:
555 Completed a major update for the GPE support in order to improve support for
556 shared GPEs and to simplify both host OS and ACPICA code. Added a reference
557 count mechanism to support shared GPEs that require multiple device drivers.
558 Several external interfaces have changed. One external interface has been
559 removed. One new external interface was added. Most of the GPE external
560 interfaces now use the GPE spinlock instead of the events mutex (and the
561 Flags parameter for many GPE interfaces has been removed.) See the updated
562 ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore, Rafael
563 Wysocki. ACPICA BZ 831.
566 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus
572 Implemented write support for DataTable operation regions. These regions are
573 defined via the DataTableRegion() operator. Previously, only read support was
574 implemented. The ACPI specification allows DataTableRegions to be read/write,
577 Implemented a new subsystem option to force a copy of the DSDT to local
578 memory. Optionally copy the entire DSDT to local memory (instead of simply
579 mapping it.) There are some (albeit very rare) BIOSs that corrupt or replace
580 the original DSDT, creating the need for this option. Default is FALSE, do
583 Implemented detection of a corrupted or replaced DSDT. This change adds
584 support to detect a DSDT that has been corrupted and/or replaced from outside
585 the OS (by firmware). This is typically catastrophic for the system, but has
586 been seen on some machines. Once this problem has been detected, the DSDT
587 copy option can be enabled via system configuration. Lin Ming, Bob Moore.
589 Fixed two problems with AcpiReallocateRootTable during the root table copy.
590 When copying the root table to the new allocation, the length used was
591 incorrect. The new size was used instead of the current table size, meaning
592 too much data was copied. Also, the count of available slots for ACPI tables
593 was not set correctly. Alexey Starikovskiy, Bob Moore.
595 Example Code and Data Size: These are the sizes for the OS-independent
596 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
597 debug version of the code includes the debug output trace mechanism and has a
598 much larger code and data size.
601 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
602 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
604 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
605 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
607 2) iASL Compiler/Disassembler and Tools:
609 iASL: Implement limited typechecking for values returned from predefined
610 control methods. The type of any returned static (unnamed) object is now
611 validated. For example, Return(1). ACPICA BZ 786.
613 iASL: Fixed a predefined name object verification regression. Fixes a problem
614 introduced in version 20100304. An error is incorrectly generated if a
615 predefined name is declared as a static named object with a value defined
616 using the keywords "Zero", "One", or "Ones". Lin Ming.
618 iASL: Added Windows 7 support for the -g option (get local ACPI tables) by
619 reducing the requested registry access rights. ACPICA BZ 842.
621 Disassembler: fixed a possible fault when generating External() statements.
622 Introduced in commit ae7d6fd: Properly handle externals with parent-prefix
623 (carat). Fixes a string length allocation calculation. Lin Ming.
625 ----------------------------------------
626 04 March 2010. Summary of changes for version 20100304:
628 1) ACPI CA Core Subsystem:
630 Fixed a possible problem with the AML Mutex handling function
631 AcpiExReleaseMutex where the function could fault under the very rare
632 condition when the interpreter has blocked, the interpreter lock is released,
633 the interpreter is then reentered via the same thread, and attempts to
634 acquire an AML mutex that was previously acquired. FreeBSD report 140979. Lin
637 Implemented additional configuration support for the AML "Debug Object".
638 Output from the debug object can now be enabled via a global variable,
639 AcpiGbl_EnableAmlDebugObject. This will assist with remote machine debugging.
640 This debug output is now available in the release version of ACPICA instead
641 of just the debug version. Also, the entire debug output module can now be
642 configured out of the ACPICA build if desired. One new file added,
643 executer/exdebug.c. Lin Ming, Bob Moore.
645 Added header support for the ACPI MCHI table (Management Controller Host
646 Interface Table). This table was added in ACPI 4.0, but the defining document
647 has only recently become available.
649 Standardized output of integer values for ACPICA warnings/errors. Always use
650 0x prefix for hex output, always use %u for unsigned integer decimal output.
651 Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about 400
652 invocations.) These invocations were converted from the original
653 ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835.
655 Example Code and Data Size: These are the sizes for the OS-independent
656 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
657 debug version of the code includes the debug output trace mechanism and has a
658 much larger code and data size.
661 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
662 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
664 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
665 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
667 2) iASL Compiler/Disassembler and Tools:
669 iASL: Implemented typechecking support for static (non-control method)
670 predefined named objects that are declared with the Name() operator. For
671 example, the type of this object is now validated to be of type Integer:
672 Name(_BBN, 1). This change migrates the compiler to using the core predefined
673 name table instead of maintaining a local version. Added a new file,
674 aslpredef.c. ACPICA BZ 832.
676 Disassembler: Added support for the ACPI 4.0 MCHI table.
678 ----------------------------------------
679 21 January 2010. Summary of changes for version 20100121:
681 1) ACPI CA Core Subsystem:
683 Added the 2010 copyright to all module headers and signons. This affects
684 virtually every file in the ACPICA core subsystem, the iASL compiler, the
685 tools/utilities, and the test suites.
687 Implemented a change to the AcpiGetDevices interface to eliminate unnecessary
688 invocations of the _STA method. In the case where a specific _HID is
689 requested, do not run _STA until a _HID match is found. This eliminates
690 potentially dozens of _STA calls during a search for a particular device/HID,
691 which in turn can improve boot times. ACPICA BZ 828. Lin Ming.
693 Implemented an additional repair for predefined method return values. Attempt
694 to repair unexpected NULL elements within returned Package objects. Create an
695 Integer of value zero, a NULL String, or a zero-length Buffer as appropriate.
696 ACPICA BZ 818. Lin Ming, Bob Moore.
698 Removed the obsolete ACPI_INTEGER data type. This type was introduced as the
699 code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0 (with
700 64-bit AML integers). It is now obsolete and this change removes it from the
701 ACPICA code base, replaced by UINT64. The original typedef has been retained
702 for now for compatibility with existing device driver code. ACPICA BZ 824.
704 Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field in
705 the parse tree object.
707 Added additional warning options for the gcc-4 generation. Updated the source
708 accordingly. This includes some code restructuring to eliminate unreachable
709 code, elimination of some gotos, elimination of unused return values, some
710 additional casting, and removal of redundant declarations.
712 Example Code and Data Size: These are the sizes for the OS-independent
713 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
714 debug version of the code includes the debug output trace mechanism and has a
715 much larger code and data size.
718 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
719 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
721 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
722 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
724 2) iASL Compiler/Disassembler and Tools:
726 No functional changes for this release.
728 ----------------------------------------
729 14 December 2009. Summary of changes for version 20091214:
731 1) ACPI CA Core Subsystem:
733 Enhanced automatic data type conversions for predefined name repairs. This
734 change expands the automatic repairs/conversions for predefined name return
735 values to make Integers, Strings, and Buffers fully interchangeable. Also, a
736 Buffer can be converted to a Package of Integers if necessary. The nsrepair.c
737 module was completely restructured. Lin Ming, Bob Moore.
739 Implemented automatic removal of null package elements during predefined name
740 repairs. This change will automatically remove embedded and trailing NULL
741 package elements from returned package objects that are defined to contain a
742 variable number of sub-packages. The driver is then presented with a package
743 with no null elements to deal with. ACPICA BZ 819.
745 Implemented a repair for the predefined _FDE and _GTM names. The expected
746 return value for both names is a Buffer of 5 DWORDs. This repair fixes two
747 possible problems (both seen in the field), where a package of integers is
748 returned, or a buffer of BYTEs is returned. With assistance from Jung-uk Kim.
750 Implemented additional module-level code support. This change will properly
751 execute module-level code that is not at the root of the namespace (under a
752 Device object, etc.). Now executes the code within the current scope instead
753 of the root. ACPICA BZ 762. Lin Ming.
755 Fixed possible mutex acquisition errors when running _REG methods. Fixes a
756 problem where mutex errors can occur when running a _REG method that is in
757 the same scope as a method-defined operation region or an operation region
758 under a module-level IF block. This type of code is rare, so the problem has
759 not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore.
761 Fixed a possible memory leak during module-level code execution. An object
762 could be leaked for each block of executed module-level code if the
763 interpreter slack mode is enabled This change deletes any implicitly returned
764 object from the module-level code block. Lin Ming.
766 Removed messages for successful predefined repair(s). The repair mechanism
767 was considered too wordy. Now, messages are only unconditionally emitted if
768 the return object cannot be repaired. Existing messages for successful
769 repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ 827.
771 Example Code and Data Size: These are the sizes for the OS-independent
772 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
773 debug version of the code includes the debug output trace mechanism and has a
774 much larger code and data size.
777 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
778 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
780 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
781 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
783 2) iASL Compiler/Disassembler and Tools:
785 iASL: Fixed a regression introduced in 20091112 where intermediate .SRC files
786 were no longer automatically removed at the termination of the compile.
788 acpiexec: Implemented the -f option to specify default region fill value.
789 This option specifies the value used to initialize buffers that simulate
790 operation regions. Default value is zero. Useful for debugging problems that
791 depend on a specific initial value for a region or field.
793 ----------------------------------------
794 12 November 2009. Summary of changes for version 20091112:
796 1) ACPI CA Core Subsystem:
798 Implemented a post-order callback to AcpiWalkNamespace. The existing
799 interface only has a pre-order callback. This change adds an additional
800 parameter for a post-order callback which will be more useful for bus scans.
801 ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference.
803 Modified the behavior of the operation region memory mapping cache for
804 SystemMemory. Ensure that the memory mappings created for operation regions
805 do not cross 4K page boundaries. Crossing a page boundary while mapping
806 regions can cause kernel warnings on some hosts if the pages have different
807 attributes. Such regions are probably BIOS bugs, and this is the workaround.
808 Linux BZ 14445. Lin Ming.
810 Implemented an automatic repair for predefined methods that must return
811 sorted lists. This change will repair (by sorting) packages returned by _ALR,
812 _PSS, and _TSS. Drivers can now assume that the packages are correctly sorted
813 and do not contain NULL package elements. Adds one new file,
814 namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore.
816 Fixed a possible fault during predefined name validation if a return Package
817 object contains NULL elements. Also adds a warning if a NULL element is
818 followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement may
819 include repair or removal of all such NULL elements where possible.
821 Implemented additional module-level executable AML code support. This change
822 will execute module-level code that is not at the root of the namespace
823 (under a Device object, etc.) at table load time. Module-level executable AML
824 code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming.
826 Implemented a new internal function to create Integer objects. This function
827 simplifies miscellaneous object creation code. ACPICA BZ 823.
829 Reduced the severity of predefined repair messages, Warning to Info. Since
830 the object was successfully repaired, a warning is too severe. Reduced to an
831 info message for now. These messages may eventually be changed to debug-only.
834 Example Code and Data Size: These are the sizes for the OS-independent
835 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
836 debug version of the code includes the debug output trace mechanism and has a
837 much larger code and data size.
840 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
841 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
843 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
844 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
846 2) iASL Compiler/Disassembler and Tools:
848 iASL: Implemented Switch() with While(1) so that Break works correctly. This
849 change correctly implements the Switch operator with a surrounding While(1)
850 so that the Break operator works as expected. ACPICA BZ 461. Lin Ming.
852 iASL: Added a message if a package initializer list is shorter than package
853 length. Adds a new remark for a Package() declaration if an initializer list
854 exists, but is shorter than the declared length of the package. Although
855 technically legal, this is probably a coding error and it is seen in the
856 field. ACPICA BZ 815. Lin Ming, Bob Moore.
858 iASL: Fixed a problem where the compiler could fault after the maximum number
859 of errors was reached (200).
861 acpixtract: Fixed a possible warning for pointer cast if the compiler warning
864 ----------------------------------------
865 13 October 2009. Summary of changes for version 20091013:
867 1) ACPI CA Core Subsystem:
869 Fixed a problem where an Operation Region _REG method could be executed more
870 than once. If a custom address space handler is installed by the host before
871 the "initialize operation regions" phase of the ACPICA initialization, any
872 _REG methods for that address space could be executed twice. This change
873 fixes the problem. ACPICA BZ 427. Lin Ming.
875 Fixed a possible memory leak for the Scope() ASL operator. When the exact
876 invocation of "Scope(\)" is executed (change scope to root), one internal
877 operand object was leaked. Lin Ming.
879 Implemented a run-time repair for the _MAT predefined method. If the _MAT
880 return value is defined as a Field object in the AML, and the field
881 size is less than or equal to the default width of an integer (32 or 64),_MAT
882 can incorrectly return an Integer instead of a Buffer. ACPICA now
883 automatically repairs this problem. ACPICA BZ 810.
885 Implemented a run-time repair for the _BIF and _BIX predefined methods. The
886 "OEM Information" field is often incorrectly returned as an Integer with
887 value zero if the field is not supported by the platform. This is due to an
888 ambiguity in the ACPI specification. The field should always be a string.
889 ACPICA now automatically repairs this problem by returning a NULL string
890 within the returned Package. ACPICA BZ 807.
892 Example Code and Data Size: These are the sizes for the OS-independent
893 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
894 debug version of the code includes the debug output trace mechanism and has a
895 much larger code and data size.
898 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
899 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
901 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
902 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
904 2) iASL Compiler/Disassembler and Tools:
906 Disassembler: Fixed a problem where references to external symbols that
907 contained one or more parent-prefixes (carats) were not handled correctly,
908 possibly causing a fault. ACPICA BZ 806. Lin Ming.
910 Disassembler: Restructured the code so that all functions that handle
911 external symbols are in a single module. One new file is added,
914 AML Debugger: Added a max count argument for the Batch command (which
915 executes multiple predefined methods within the namespace.)
917 iASL: Updated the compiler documentation (User Reference.) Available at
918 http://www.acpica.org/documentation/. ACPICA BZ 750.
920 AcpiXtract: Updated for Lint and other formatting changes. Close all open
923 ----------------------------------------
924 03 September 2009. Summary of changes for version 20090903:
926 1) ACPI CA Core Subsystem:
928 For Windows Vista compatibility, added the automatic execution of an _INI
929 method located at the namespace root (\_INI). This method is executed at
930 table load time. This support is in addition to the automatic execution of
933 Fixed a possible memory leak in the interpreter for AML package objects if
934 the package initializer list is longer than the defined size of the package.
935 This apparently can only happen if the BIOS changes the package size on the
936 fly (seen in a _PSS object), as ASL compilers do not allow this. The
937 interpreter will truncate the package to the defined size (and issue an error
938 message), but previously could leave the extra objects undeleted if they were
939 pre-created during the argument processing (such is the case if the package
940 consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805.
942 Fixed a problem seen when a Buffer or String is stored to itself via ASL.
943 This has been reported in the field. Previously, ACPICA would zero out the
944 buffer/string. Now, the operation is treated as a noop. Provides Windows
945 compatibility. ACPICA BZ 803. Lin Ming.
947 Removed an extraneous error message for ASL constructs of the form
948 Store(LocalX,LocalX) when LocalX is uninitialized. These curious statements
949 are seen in many BIOSs and are once again treated as NOOPs and no error is
950 emitted when they are encountered. ACPICA BZ 785.
952 Fixed an extraneous warning message if a _DSM reserved method returns a
953 Package object. _DSM can return any type of object, so validation on the
954 return type cannot be performed. ACPICA BZ 802.
956 Example Code and Data Size: These are the sizes for the OS-independent
957 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
958 debug version of the code includes the debug output trace mechanism and has a
959 much larger code and data size.
962 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
963 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
965 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
966 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
968 2) iASL Compiler/Disassembler and Tools:
970 iASL: Fixed a problem with the use of the Alias operator and Resource
971 Templates. The correct alias is now constructed and no error is emitted.
974 iASL: Implemented the -I option to specify additional search directories for
975 include files. Allows multiple additional search paths for include files.
976 Directories are searched in the order specified on the command line (after
977 the local directory is searched.) ACPICA BZ 800.
979 iASL: Fixed a problem where the full pathname for include files was not
980 emitted for warnings/errors. This caused the IDE support to not work
981 properly. ACPICA BZ 765.
983 iASL: Implemented the -@ option to specify a Windows-style response file
984 containing additional command line options. ACPICA BZ 801.
986 AcpiExec: Added support to load multiple AML files simultaneously (such as a
987 DSDT and multiple SSDTs). Also added support for wildcards within the AML
988 pathname. These features allow all machine tables to be easily loaded and
989 debugged together. ACPICA BZ 804.
991 Disassembler: Added missing support for disassembly of HEST table Error Bank
994 ----------------------------------------
995 30 July 2009. Summary of changes for version 20090730:
997 The ACPI 4.0 implementation for ACPICA is complete with this release.
999 1) ACPI CA Core Subsystem:
1001 ACPI 4.0: Added header file support for all new and changed ACPI tables.
1002 Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are new
1003 for ACPI 4.0, but have previously been supported in ACPICA are: CPEP, BERT,
1004 EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT. There
1005 have been some ACPI 4.0 changes to other existing tables. Split the large
1006 actbl1.h header into the existing actbl2.h header. ACPICA BZ 774.
1008 ACPI 4.0: Implemented predefined name validation for all new names. There are
1009 31 new names in ACPI 4.0. The predefined validation module was split into two
1010 files. The new file is namespace/nsrepair.c. ACPICA BZ 770.
1012 Implemented support for so-called "module-level executable code". This is
1013 executable AML code that exists outside of any control method and is intended
1014 to be executed at table load time. Although illegal since ACPI 2.0, this type
1015 of code still exists and is apparently still being created. Blocks of this
1016 code are now detected and executed as intended. Currently, the code blocks
1017 must exist under either an If, Else, or While construct; these are the
1018 typical cases seen in the field. ACPICA BZ 762. Lin Ming.
1020 Implemented an automatic dynamic repair for predefined names that return
1021 nested Package objects. This applies to predefined names that are defined to
1022 return a variable-length Package of sub-packages. If the number of sub-
1023 packages is one, BIOS code is occasionally seen that creates a simple single
1024 package with no sub-packages. This code attempts to fix the problem by
1025 wrapping a new package object around the existing package. These methods can
1026 be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA BZ
1029 Fixed a regression introduced in 20090625 for the AcpiGetDevices interface.
1030 The _HID/_CID matching was broken and no longer matched IDs correctly. ACPICA
1033 Fixed a problem with AcpiReset where the reset would silently fail if the
1034 register was one of the protected I/O ports. AcpiReset now bypasses the port
1035 validation mechanism. This may eventually be driven into the AcpiRead/Write
1038 Fixed a regression related to the recent update of the AcpiRead/Write
1039 interfaces. A sleep/suspend could fail if the optional PM2 Control register
1040 does not exist during an attempt to write the Bus Master Arbitration bit.
1041 (However, some hosts already delete the code that writes this bit, and the
1042 code may in fact be obsolete at this date.) ACPICA BZ 799.
1044 Fixed a problem where AcpiTerminate could fault if inadvertently called twice
1045 in succession. ACPICA BZ 795.
1047 Example Code and Data Size: These are the sizes for the OS-independent
1048 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1049 debug version of the code includes the debug output trace mechanism and has a
1050 much larger code and data size.
1053 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
1054 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
1056 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
1057 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
1059 2) iASL Compiler/Disassembler and Tools:
1061 ACPI 4.0: Implemented disassembler support for all new ACPI tables and
1062 changes to existing tables. ACPICA BZ 775.
1064 ----------------------------------------
1065 25 June 2009. Summary of changes for version 20090625:
1067 The ACPI 4.0 Specification was released on June 16 and is available at
1068 www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will
1069 continue for the next few releases.
1071 1) ACPI CA Core Subsystem:
1073 ACPI 4.0: Implemented interpreter support for the IPMI operation region
1074 address space. Includes support for bi-directional data buffers and an IPMI
1075 address space handler (to be installed by an IPMI device driver.) ACPICA BZ
1078 ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. Includes
1079 support in both the header files and the disassembler.
1081 Completed a major update for the AcpiGetObjectInfo external interface.
1083 - Support for variable, unlimited length HID, UID, and CID strings.
1084 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, etc.)
1085 - Call the _SxW power methods on behalf of a device object.
1086 - Determine if a device is a PCI root bridge.
1087 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO.
1088 These changes will require an update to all callers of this interface. See
1089 the updated ACPICA Programmer Reference for details. One new source file has
1090 been added - utilities/utids.c. ACPICA BZ 368, 780.
1092 Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit
1093 transfers. The Value parameter has been extended from 32 bits to 64 bits in
1094 order to support new ACPI 4.0 tables. These changes will require an update to
1095 all callers of these interfaces. See the ACPICA Programmer Reference for
1096 details. ACPICA BZ 768.
1098 Fixed several problems with AcpiAttachData. The handler was not invoked when
1099 the host node was deleted. The data sub-object was not automatically deleted
1100 when the host node was deleted. The interface to the handler had an unused
1101 parameter, this was removed. ACPICA BZ 778.
1103 Enhanced the function that dumps ACPI table headers. All non-printable
1104 characters in the string fields are now replaced with '?' (Signature, OemId,
1105 OemTableId, and CompilerId.) ACPI tables with non-printable characters in
1106 these fields are occasionally seen in the field. ACPICA BZ 788.
1108 Fixed a problem with predefined method repair code where the code that
1109 attempts to repair/convert an object of incorrect type is only executed on
1110 the first time the predefined method is called. The mechanism that disables
1111 warnings on subsequent calls was interfering with the repair mechanism.
1114 Fixed a possible memory leak in the predefined validation/repair code when a
1115 buffer is automatically converted to an expected string object.
1117 Removed obsolete 16-bit files from the distribution and from the current git
1118 tree head. ACPICA BZ 776.
1120 Example Code and Data Size: These are the sizes for the OS-independent
1121 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1122 debug version of the code includes the debug output trace mechanism and has a
1123 much larger code and data size.
1126 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
1127 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
1129 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
1130 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
1132 2) iASL Compiler/Disassembler and Tools:
1134 ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI
1135 operation region keyword. ACPICA BZ 771, 772. Lin Ming.
1137 ACPI 4.0: iASL - implemented compile-time validation support for all new
1138 predefined names and control methods (31 total). ACPICA BZ 769.
1140 ----------------------------------------
1141 21 May 2009. Summary of changes for version 20090521:
1143 1) ACPI CA Core Subsystem:
1145 Disabled the preservation of the SCI enable bit in the PM1 control register.
1146 The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification to be
1147 a "preserved" bit - "OSPM always preserves this bit position", section
1148 4.7.3.2.1. However, some machines fail if this bit is in fact preserved
1149 because the bit needs to be explicitly set by the OS as a workaround. No
1150 machines fail if the bit is not preserved. Therefore, ACPICA no longer
1151 attempts to preserve this bit.
1153 Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or
1154 incorrectly formed _PRT package could cause a fault. Added validation to
1155 ensure that each package element is actually a sub-package.
1157 Implemented a new interface to install or override a single control method,
1158 AcpiInstallMethod. This interface is useful when debugging in order to repair
1159 an existing method or to install a missing method without having to override
1160 the entire ACPI table. See the ACPICA Programmer Reference for use and
1161 examples. Lin Ming, Bob Moore.
1163 Fixed several reference count issues with the DdbHandle object that is
1164 created from a Load or LoadTable operator. Prevent premature deletion of the
1165 object. Also, mark the object as invalid once the table has been unloaded.
1166 This is needed because the handle itself may not be deleted after the table
1167 unload, depending on whether it has been stored in a named object by the
1170 Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple
1171 mutexes of the same sync level are acquired but then not released in strict
1172 opposite order, the internally maintained Current Sync Level becomes confused
1173 and can cause subsequent execution errors. ACPICA BZ 471.
1175 Changed the allowable release order for ASL mutex objects. The ACPI 4.0
1176 specification has been changed to make the SyncLevel for mutex objects more
1177 useful. When releasing a mutex, the SyncLevel of the mutex must now be the
1178 same as the current sync level. This makes more sense than the previous rule
1179 (SyncLevel less than or equal). This change updates the code to match the
1182 Fixed a problem with the local version of the AcpiOsPurgeCache function. The
1183 (local) cache must be locked during all cache object deletions. Andrew
1186 Updated the Load operator to use operation region interfaces. This replaces
1187 direct memory mapping with region access calls. Now, all region accesses go
1188 through the installed region handler as they should.
1190 Simplified and optimized the NsGetNextNode function. Reduced parameter count
1191 and reduced code for this frequently used function.
1193 Example Code and Data Size: These are the sizes for the OS-independent
1194 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1195 debug version of the code includes the debug output trace mechanism and has a
1196 much larger code and data size.
1199 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
1200 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
1202 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
1203 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
1205 2) iASL Compiler/Disassembler and Tools:
1207 Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some problems
1208 with sub-table disassembly and handling invalid sub-tables. Attempt recovery
1209 after an invalid sub-table ID.
1211 ----------------------------------------
1212 22 April 2009. Summary of changes for version 20090422:
1214 1) ACPI CA Core Subsystem:
1216 Fixed a compatibility issue with the recently released I/O port protection
1217 mechanism. For windows compatibility, 1) On a port protection violation,
1218 simply ignore the request and do not return an exception (allow the control
1219 method to continue execution.) 2) If only part of the request overlaps a
1220 protected port, read/write the individual ports that are not protected. Linux
1223 Enhanced the execution of the ASL/AML BreakPoint operator so that it actually
1224 breaks into the AML debugger if the debugger is present. This matches the
1225 ACPI-defined behavior.
1227 Fixed several possible warnings related to the use of the configurable
1228 ACPI_THREAD_ID. This type can now be configured as either an integer or a
1229 pointer with no warnings. Also fixes several warnings in printf-like
1230 statements for the 64-bit build when the type is configured as a pointer.
1233 Fixed a number of possible warnings when compiling with gcc 4+ (depending on
1234 warning options.) Examples include printf formats, aliasing, unused globals,
1235 missing prototypes, missing switch default statements, use of non-ANSI
1236 library functions, use of non-ANSI constructs. See generate/unix/Makefile for
1237 a list of warning options used with gcc 3 and 4. ACPICA BZ 735.
1239 Example Code and Data Size: These are the sizes for the OS-independent
1240 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1241 debug version of the code includes the debug output trace mechanism and has a
1242 much larger code and data size.
1245 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
1246 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
1248 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
1249 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
1251 2) iASL Compiler/Disassembler and Tools:
1253 iASL: Fixed a generation warning from Bison 2.3 and fixed several warnings on
1256 iASL: Fixed a problem where the Unix/Linux versions of the compiler could not
1257 correctly digest Windows/DOS formatted files (with CR/LF).
1259 iASL: Added a new option for "quiet mode" (-va) that produces only the
1260 compilation summary, not individual errors and warnings. Useful for large
1263 AcpiExec: Implemented a new option (-z) to enable a forced semaphore/mutex
1264 timeout that can be used to detect hang conditions during execution of AML
1265 code (includes both internal semaphores and AML-defined mutexes and events.)
1267 Added new makefiles for the generation of acpica in a generic unix-like
1268 environment. These makefiles are intended to generate the acpica tools and
1269 utilities from the original acpica git source tree structure.
1271 Test Suites: Updated and cleaned up the documentation files. Updated the
1272 copyrights to 2009, affecting all source files. Use the new version of iASL
1273 with quiet mode. Increased the number of available semaphores in the Windows
1274 OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, added
1275 an alternate implementation of the semaphore timeout to allow aslts to
1276 execute fully on Cygwin.
1278 ----------------------------------------
1279 20 March 2009. Summary of changes for version 20090320:
1281 1) ACPI CA Core Subsystem:
1283 Fixed a possible race condition between AcpiWalkNamespace and dynamic table
1284 unloads. Added a reader/writer locking mechanism to allow multiple concurrent
1285 namespace walks (readers), but block a dynamic table unload until it can gain
1286 exclusive write access to the namespace. This fixes a problem where a table
1287 unload could (possibly catastrophically) delete the portion of the namespace
1288 that is currently being examined by a walk. Adds a new file, utlock.c, that
1289 implements the reader/writer lock mechanism. ACPICA BZ 749.
1291 Fixed a regression introduced in version 20090220 where a change to the FADT
1292 handling could cause the ACPICA subsystem to access non-existent I/O ports.
1294 Modified the handling of FADT register and table (FACS/DSDT) addresses. The
1295 FADT can contain both 32-bit and 64-bit versions of these addresses.
1296 Previously, the 64-bit versions were favored, meaning that if both 32 and 64
1297 versions were valid, but not equal, the 64-bit version was used. This was
1298 found to cause some machines to fail. Now, in this case, the 32-bit version
1299 is used instead. This now matches the Windows behavior.
1301 Implemented a new mechanism to protect certain I/O ports. Provides Microsoft
1302 compatibility and protects the standard PC I/O ports from access via AML
1303 code. Adds a new file, hwvalid.c
1305 Fixed a possible extraneous warning message from the FADT support. The
1306 message warns of a 32/64 length mismatch between the legacy and GAS
1307 definitions for a register.
1309 Removed the obsolete AcpiOsValidateAddress OSL interface. This interface is
1310 made obsolete by the port protection mechanism above. It was previously used
1311 to validate the entire address range of an operation region, which could be
1312 incorrect if the range included illegal ports, but fields within the
1313 operation region did not actually access those ports. Validation is now
1314 performed on a per-field basis instead of the entire region.
1316 Modified the handling of the PM1 Status Register ignored bit (bit 11.)
1317 Ignored bits must be "preserved" according to the ACPI spec. Usually, this
1318 means a read/modify/write when writing to the register. However, for status
1319 registers, writing a one means clear the event. Writing a zero means preserve
1320 the event (do not clear.) This behavior is clarified in the ACPI 4.0 spec,
1321 and the ACPICA code now simply always writes a zero to the ignored bit.
1323 Modified the handling of ignored bits for the PM1 A/B Control Registers. As
1324 per the ACPI specification, for the control registers, preserve
1325 (read/modify/write) all bits that are defined as either reserved or ignored.
1327 Updated the handling of write-only bits in the PM1 A/B Control Registers.
1328 When reading the register, zero the write-only bits as per the ACPI spec.
1329 ACPICA BZ 443. Lin Ming.
1331 Removed "Linux" from the list of supported _OSI strings. Linux no longer
1332 wants to reply true to this request. The Windows strings are the only paths
1333 through the AML that are tested and known to work properly.
1336 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
1337 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
1339 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
1340 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
1342 2) iASL Compiler/Disassembler and Tools:
1344 Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c and
1347 ----------------------------------------
1348 20 February 2009. Summary of changes for version 20090220:
1350 1) ACPI CA Core Subsystem:
1352 Optimized the ACPI register locking. Removed locking for reads from the ACPI
1353 bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock is
1354 not required when reading the single-bit registers. The
1355 AcpiGetRegisterUnlocked function is no longer needed and has been removed.
1356 This will improve performance for reads on these registers. ACPICA BZ 760.
1358 Fixed the parameter validation for AcpiRead/Write. Now return
1359 AE_BAD_PARAMETER if the input register pointer is null, and AE_BAD_ADDRESS if
1360 the register has an address of zero. Previously, these cases simply returned
1361 AE_OK. For optional registers such as PM1B status/enable/control, the caller
1362 should check for a valid register address before calling. ACPICA BZ 748.
1364 Renamed the external ACPI bit register access functions. Renamed
1365 AcpiGetRegister and AcpiSetRegister to clarify the purpose of these
1366 functions. The new names are AcpiReadBitRegister and AcpiWriteBitRegister.
1367 Also, restructured the code for these functions by simplifying the code path
1368 and condensing duplicate code to reduce code size.
1370 Added new functions to transparently handle the possibly split PM1 A/B
1371 registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two functions
1372 now handle the split registers for PM1 Status, Enable, and Control. ACPICA BZ
1375 Added a function to handle the PM1 control registers, AcpiHwWritePm1Control.
1376 This function writes both of the PM1 control registers (A/B). These registers
1377 are different than the PM1 A/B status and enable registers in that different
1378 values can be written to the A/B registers. Most notably, the SLP_TYP bits
1379 can be different, as per the values returned from the _Sx predefined methods.
1381 Removed an extra register write within AcpiHwClearAcpiStatus. This function
1382 was writing an optional PM1B status register twice. The existing call to the
1383 low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 A/B
1384 register. ACPICA BZ 751.
1386 Split out the PM1 Status registers from the FADT. Added new globals for these
1387 registers (A/B), similar to the way the PM1 Enable registers are handled.
1388 Instead of overloading the FADT Event Register blocks. This makes the code
1389 clearer and less prone to error.
1391 Fixed the warning message for when the platform contains too many ACPI tables
1392 for the default size of the global root table data structure. The calculation
1393 for the truncation value was incorrect.
1395 Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this
1396 obsolete macro, since it is now a simple reference to ->common.type. There
1397 were about 150 invocations of the macro across 41 files. ACPICA BZ 755.
1399 Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as
1400 TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to
1401 simply SLEEP_TYPE. ACPICA BZ 754.
1403 Conditionally compile the AcpiSetFirmwareWakingVector64 function. This
1404 function is only needed on 64-bit host operating systems and is thus not
1405 included for 32-bit hosts.
1407 Debug output: print the input and result for invocations of the _OSI reserved
1408 control method via the ACPI_LV_INFO debug level. Also, reduced some of the
1409 verbosity of this debug level. Len Brown.
1411 Example Code and Data Size: These are the sizes for the OS-independent
1412 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1413 debug version of the code includes the debug output trace mechanism and has a
1414 much larger code and data size.
1417 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
1418 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
1420 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
1421 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
1423 2) iASL Compiler/Disassembler and Tools:
1425 Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the
1426 various legal performance profiles.
1428 ----------------------------------------
1429 23 January 2009. Summary of changes for version 20090123:
1431 1) ACPI CA Core Subsystem:
1433 Added the 2009 copyright to all module headers and signons. This affects
1434 virtually every file in the ACPICA core subsystem, the iASL compiler, and
1435 the tools/utilities.
1437 Implemented a change to allow the host to override any ACPI table, including
1438 dynamically loaded tables. Previously, only the DSDT could be replaced by the
1439 host. With this change, the AcpiOsTableOverride interface is called for each
1440 table found in the RSDT/XSDT during ACPICA initialization, and also whenever
1441 a table is dynamically loaded via the AML Load operator.
1443 Updated FADT flag definitions, especially the Boot Architecture flags.
1445 Debugger: For the Find command, automatically pad the input ACPI name with
1446 underscores if the name is shorter than 4 characters. This enables a match
1447 with the actual namespace entry which is itself padded with underscores.
1449 Example Code and Data Size: These are the sizes for the OS-independent
1450 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1451 debug version of the code includes the debug output trace mechanism and has a
1452 much larger code and data size.
1455 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
1456 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
1458 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
1459 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
1461 2) iASL Compiler/Disassembler and Tools:
1463 Fix build error under Bison-2.4.
1465 Dissasembler: Enhanced FADT support. Added decoding of the Boot Architecture
1466 flags. Now decode all flags, regardless of the FADT version. Flag output
1467 includes the FADT version which first defined each flag.
1469 The iASL -g option now dumps the RSDT to a file (in addition to the FADT and
1470 DSDT). Windows only.
1472 ----------------------------------------
1473 04 December 2008. Summary of changes for version 20081204:
1475 1) ACPI CA Core Subsystem:
1477 The ACPICA Programmer Reference has been completely updated and revamped for
1478 this release. This includes updates to the external interfaces, OSL
1479 interfaces, the overview sections, and the debugger reference.
1481 Several new ACPICA interfaces have been implemented and documented in the
1482 programmer reference:
1483 AcpiReset - Writes the reset value to the FADT-defined reset register.
1484 AcpiDisableAllGpes - Disable all available GPEs.
1485 AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs.
1486 AcpiGetGpeDevice - Get the GPE block device associated with a GPE.
1487 AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs.
1488 AcpiRead - Low-level read ACPI register (was HwLowLevelRead.)
1489 AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.)
1491 Most of the public ACPI hardware-related interfaces have been moved to a new
1492 file, components/hardware/hwxface.c
1494 Enhanced the FADT parsing and low-level ACPI register access: The ACPI
1495 register lengths within the FADT are now used, and the low level ACPI
1496 register access no longer hardcodes the ACPI register lengths. Given that
1497 there may be some risk in actually trusting the FADT register lengths, a run-
1498 time option was added to fall back to the default hardcoded lengths if the
1499 FADT proves to contain incorrect values - UseDefaultRegisterWidths. This
1500 option is set to true for now, and a warning is issued if a suspicious FADT
1501 register length is overridden with the default value.
1503 Fixed a reference count issue in NsRepairObject. This problem was introduced
1504 in version 20081031 as part of a fix to repair Buffer objects within
1507 Added semaphore support to the Linux/Unix application OS-services layer
1508 (OSL). ACPICA BZ 448. Lin Ming.
1510 Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes will
1511 be implemented in the OSL, or will binary semaphores be used instead.
1513 Example Code and Data Size: These are the sizes for the OS-independent
1514 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1515 debug version of the code includes the debug output trace mechanism and has a
1516 much larger code and data size.
1519 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
1520 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
1522 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
1523 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
1525 2) iASL Compiler/Disassembler and Tools:
1527 iASL: Completed the '-e' option to include additional ACPI tables in order to
1528 aid with disassembly and External statement generation. ACPICA BZ 742. Lin
1531 iASL: Removed the "named object in while loop" error. The compiler cannot
1532 determine how many times a loop will execute. ACPICA BZ 730.
1534 Disassembler: Implemented support for FADT revision 2 (MS extension). ACPICA
1537 Disassembler: Updates for several ACPI data tables (HEST, EINJ, and MCFG).
1539 ----------------------------------------
1540 31 October 2008. Summary of changes for version 20081031:
1542 1) ACPI CA Core Subsystem:
1544 Restructured the ACPICA header files into public/private. acpi.h now includes
1545 only the "public" acpica headers. All other acpica headers are "private" and
1546 should not be included by acpica users. One new file, accommon.h is used to
1547 include the commonly used private headers for acpica code generation. Future
1548 plans include moving all private headers to a new subdirectory.
1550 Implemented an automatic Buffer->String return value conversion for
1551 predefined ACPI methods. For these methods (such as _BIF), added automatic
1552 conversion for return objects that are required to be a String, but a Buffer
1553 was found instead. This can happen when reading string battery data from an
1554 operation region, because it used to be difficult to convert the data from
1555 buffer to string from within the ASL. Ensures that the host OS is provided
1556 with a valid null-terminated string. Linux BZ 11822.
1558 Updated the FACS waking vector interfaces. Split AcpiSetFirmwareWakingVector
1559 into two: one for the 32-bit vector, another for the 64-bit vector. This is
1560 required because the host OS must setup the wake much differently for each
1561 vector (real vs. protected mode, etc.) and the interface itself should not be
1562 deciding which vector to use. Also, eliminated the GetFirmwareWakingVector
1563 interface, as it served no purpose (only the firmware reads the vector, OS
1564 only writes the vector.) ACPICA BZ 731.
1566 Implemented a mechanism to escape infinite AML While() loops. Added a loop
1567 counter to force exit from AML While loops if the count becomes too large.
1568 This can occur in poorly written AML when the hardware does not respond
1569 within a while loop and the loop does not implement a timeout. The maximum
1570 loop count is configurable. A new exception code is returned when a loop is
1571 broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore.
1573 Optimized the execution of AML While loops. Previously, a control state
1574 object was allocated and freed for each execution of the loop. The
1575 optimization is to simply reuse the control state for each iteration. This
1576 speeds up the raw loop execution time by about 5%.
1578 Enhanced the implicit return mechanism. For Windows compatibility, return an
1579 implicit integer of value zero for methods that contain no executable code.
1580 Such methods are seen in the field as stubs (presumably), and can cause
1581 drivers to fail if they expect a return value. Lin Ming.
1583 Allow multiple backslashes as root prefixes in namepaths. In a fully
1584 qualified namepath, allow multiple backslash prefixes. This can happen (and
1585 is seen in the field) because of the use of a double-backslash in strings
1586 (since backslash is the escape character) causing confusion. ACPICA BZ 739
1589 Emit a warning if two different FACS or DSDT tables are discovered in the
1590 FADT. Checks if there are two valid but different addresses for the FACS and
1591 DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.)
1593 Consolidated the method argument count validation code. Merged the code that
1594 validates control method argument counts into the predefined validation
1595 module. Eliminates possible multiple warnings for incorrect argument counts.
1597 Implemented ACPICA example code. Includes code for ACPICA initialization,
1598 handler installation, and calling a control method. Available at
1599 source/tools/examples.
1601 Added a global pointer for FACS table to simplify internal FACS access. Use
1602 the global pointer instead of using AcpiGetTableByIndex for each FACS access.
1603 This simplifies the code for the Global Lock and the Firmware Waking
1606 Example Code and Data Size: These are the sizes for the OS-independent
1607 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1608 debug version of the code includes the debug output trace mechanism and has a
1609 much larger code and data size.
1612 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
1613 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
1615 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
1616 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
1618 2) iASL Compiler/Disassembler and Tools:
1620 iASL: Improved disassembly of external method calls. Added the -e option to
1621 allow the inclusion of additional ACPI tables to help with the disassembly of
1622 method invocations and the generation of external declarations during the
1623 disassembly. Certain external method invocations cannot be disassembled
1624 properly without the actual declaration of the method. Use the -e option to
1625 include the table where the external method(s) are actually declared. Most
1626 useful for disassembling SSDTs that make method calls back to the master
1627 DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl -d
1628 -e dsdt.aml ssdt1.aml
1630 iASL: Fix to allow references to aliases within ASL namepaths. Fixes a
1631 problem where the use of an alias within a namepath would result in a not
1632 found error or cause the compiler to fault. Also now allows forward
1633 references from the Alias operator itself. ACPICA BZ 738.
1635 ----------------------------------------
1636 26 September 2008. Summary of changes for version 20080926:
1638 1) ACPI CA Core Subsystem:
1640 Designed and implemented a mechanism to validate predefined ACPI methods and
1641 objects. This code validates the predefined ACPI objects (objects whose names
1642 start with underscore) that appear in the namespace, at the time they are
1643 evaluated. The argument count and the type of the returned object are
1644 validated against the ACPI specification. The purpose of this validation is
1645 to detect problems with the BIOS-implemented predefined ACPI objects before
1646 the results are returned to the ACPI-related drivers. Future enhancements may
1647 include actual repair of incorrect return objects where possible. Two new
1648 files are nspredef.c and acpredef.h.
1650 Fixed a fault in the AML parser if a memory allocation fails during the Op
1651 completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492.
1653 Fixed an issue with implicit return compatibility. This change improves the
1654 implicit return mechanism to be more compatible with the MS interpreter. Lin
1655 Ming, ACPICA BZ 349.
1657 Implemented support for zero-length buffer-to-string conversions. Allow zero
1658 length strings during interpreter buffer-to-string conversions. For example,
1659 during the ToDecimalString and ToHexString operators, as well as implicit
1660 conversions. Fiodor Suietov, ACPICA BZ 585.
1662 Fixed two possible memory leaks in the error exit paths of
1663 AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions are
1664 similar in that they use a stack of state objects in order to eliminate
1665 recursion. The stack must be fully unwound and deallocated if an error
1666 occurs. Lin Ming. ACPICA BZ 383.
1668 Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the global
1669 ACPI register table. This bit does not exist and is unused. Lin Ming, Bob
1670 Moore ACPICA BZ 442.
1672 Removed the obsolete version number in module headers. Removed the
1673 "$Revision" number that appeared in each module header. This version number
1674 was useful under SourceSafe and CVS, but has no meaning under git. It is not
1675 only incorrect, it could also be misleading.
1677 Example Code and Data Size: These are the sizes for the OS-independent
1678 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1679 debug version of the code includes the debug output trace mechanism and has a
1680 much larger code and data size.
1683 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
1684 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
1686 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
1687 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
1689 ----------------------------------------
1690 29 August 2008. Summary of changes for version 20080829:
1692 1) ACPI CA Core Subsystem:
1694 Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type
1695 Reference. Changes include the elimination of cheating on the Object field
1696 for the DdbHandle subtype, addition of a reference class field to
1697 differentiate the various reference types (instead of an AML opcode), and the
1698 cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723
1700 Reduce an error to a warning for an incorrect method argument count.
1701 Previously aborted with an error if too few arguments were passed to a
1702 control method via the external ACPICA interface. Now issue a warning instead
1703 and continue. Handles the case where the method inadvertently declares too
1704 many arguments, but does not actually use the extra ones. Applies mainly to
1705 the predefined methods. Lin Ming. Linux BZ 11032.
1707 Disallow the evaluation of named object types with no intrinsic value. Return
1708 AE_TYPE for objects that have no value and therefore evaluation is undefined:
1709 Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation of
1710 these types were allowed, but an exception would be generated at some point
1711 during the evaluation. Now, the error is generated up front.
1713 Fixed a possible memory leak in the AcpiNsGetExternalPathname function
1714 (nsnames.c). Fixes a leak in the error exit path.
1716 Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These debug
1717 levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and ACPI_EXCEPTION
1718 interfaces. Also added ACPI_DB_EVENTS to correspond with the existing
1721 Removed obsolete and/or unused exception codes from the acexcep.h header.
1722 There is the possibility that certain device drivers may be affected if they
1723 use any of these exceptions.
1725 The ACPICA documentation has been added to the public git source tree, under
1726 acpica/documents. Included are the ACPICA programmer reference, the iASL
1727 compiler reference, and the changes.txt release logfile.
1729 Example Code and Data Size: These are the sizes for the OS-independent
1730 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1731 debug version of the code includes the debug output trace mechanism and has a
1732 much larger code and data size.
1735 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
1736 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
1738 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
1739 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
1741 2) iASL Compiler/Disassembler and Tools:
1743 Allow multiple argument counts for the predefined _SCP method. ACPI 3.0
1744 defines _SCP with 3 arguments. Previous versions defined it with only 1
1745 argument. iASL now allows both definitions.
1747 iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for zero-
1748 length subtables when disassembling ACPI tables. Also fixed a couple of
1749 errors where a full 16-bit table type field was not extracted from the input
1752 acpisrc: Improve comment counting mechanism for generating source code
1753 statistics. Count first and last lines of multi-line comments as whitespace,
1754 not comment lines. Handle Linux legal header in addition to standard acpica
1757 ----------------------------------------
1759 29 July 2008. Summary of changes for version 20080729:
1761 1) ACPI CA Core Subsystem:
1763 Fix a possible deadlock in the GPE dispatch. Remove call to
1764 AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will attempt
1765 to acquire the GPE lock but can deadlock since the GPE lock is already held
1766 at dispatch time. This code was introduced in version 20060831 as a response
1767 to Linux BZ 6881 and has since been removed from Linux.
1769 Add a function to dereference returned reference objects. Examines the return
1770 object from a call to AcpiEvaluateObject. Any Index or RefOf references are
1771 automatically dereferenced in an attempt to return something useful (these
1772 reference types cannot be converted into an external ACPI_OBJECT.) Provides
1773 MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105
1775 x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new
1776 subtables for the MADT and one new subtable for the SRAT. Includes
1777 disassembler and AcpiSrc support. Data from the Intel 64 Architecture x2APIC
1778 Specification, June 2008.
1780 Additional error checking for pathname utilities. Add error check after all
1781 calls to AcpiNsGetPathnameLength. Add status return from
1782 AcpiNsBuildExternalPath and check after all calls. Add parameter validation
1783 to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar.
1785 Return status from the global init function AcpiUtGlobalInitialize. This is
1786 used by both the kernel subsystem and the utilities such as iASL compiler.
1787 The function could possibly fail when the caches are initialized. Yang Yi.
1789 Add a function to decode reference object types to strings. Created for
1790 improved error messages.
1792 Improve object conversion error messages. Better error messages during object
1793 conversion from internal to the external ACPI_OBJECT. Used for external calls
1794 to AcpiEvaluateObject.
1796 Example Code and Data Size: These are the sizes for the OS-independent
1797 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1798 debug version of the code includes the debug output trace mechanism and has a
1799 much larger code and data size.
1802 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
1803 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
1805 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
1806 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
1808 2) iASL Compiler/Disassembler and Tools:
1810 Debugger: fix a possible hang when evaluating non-methods. Fixes a problem
1811 introduced in version 20080701. If the object being evaluated (via execute
1812 command) is not a method, the debugger can hang while trying to obtain non-
1813 existent parameters.
1815 iASL: relax error for using reserved "_T_x" identifiers. These names can
1816 appear in a disassembled ASL file if they were emitted by the original
1817 compiler. Instead of issuing an error or warning and forcing the user to
1818 manually change these names, issue a remark instead.
1820 iASL: error if named object created in while loop. Emit an error if any named
1821 object is created within a While loop. If allowed, this code will generate a
1822 run-time error on the second iteration of the loop when an attempt is made to
1823 create the same named object twice. ACPICA bugzilla 730.
1825 iASL: Support absolute pathnames for include files. Add support for absolute
1826 pathnames within the Include operator. previously, only relative pathnames
1829 iASL: Enforce minimum 1 interrupt in interrupt macro and Resource Descriptor.
1830 The ACPI spec requires one interrupt minimum. BZ 423
1832 iASL: Handle a missing ResourceSource arg, with a present SourceIndex.
1833 Handles the case for the Interrupt Resource Descriptor where
1834 the ResourceSource argument is omitted but ResourceSourceIndex
1835 is present. Now leave room for the Index. BZ 426
1837 iASL: Prevent error message if CondRefOf target does not exist. Fixes cases
1838 where an error message is emitted if the target does not exist. BZ 516
1840 iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option
1841 (get ACPI tables on Windows). This was apparently broken in version 20070919.
1843 AcpiXtract: Handle EOF while extracting data. Correctly handle the case where
1844 the EOF happens immediately after the last table in the input file. Print
1845 completion message. Previously, no message was displayed in this case.
1847 ----------------------------------------
1848 01 July 2008. Summary of changes for version 20080701:
1850 0) Git source tree / acpica.org
1852 Fixed a problem where a git-clone from http would not transfer the entire
1855 1) ACPI CA Core Subsystem:
1857 Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one
1858 enable bit. Now performs a read-change-write of the enable register instead
1859 of simply writing out the cached enable mask. This will prevent inadvertent
1860 enabling of GPEs if a rogue GPE is received during initialization (before GPE
1861 handlers are installed.)
1863 Implemented a copy for dynamically loaded tables. Previously, dynamically
1864 loaded tables were simply mapped - but on some machines this memory is
1865 corrupted after suspend. Now copy the table to a local buffer. For the
1866 OpRegion case, added checksum verify. Use the table length from the table
1867 header, not the region length. For the Buffer case, use the table length
1868 also. Dennis Noordsij, Bob Moore. BZ 10734
1870 Fixed a problem where the same ACPI table could not be dynamically loaded and
1871 unloaded more than once. Without this change, a table cannot be loaded again
1872 once it has been loaded/unloaded one time. The current mechanism does not
1873 unregister a table upon an unload. During a load, if the same table is found,
1874 this no longer returns an exception. BZ 722
1876 Fixed a problem where the wrong descriptor length was calculated for the
1877 EndTag descriptor in 64-bit mode. The "minimal" descriptors such as EndTag
1878 are calculated as 12 bytes long, but the actual length in the internal
1879 descriptor is 16 because of the round-up to 8 on the 64-bit build. Reported
1880 by Linn Crosetto. BZ 728
1882 Fixed a possible memory leak in the Unload operator. The DdbHandle returned
1883 by Load() did not have its reference count decremented during unload, leading
1884 to a memory leak. Lin Ming. BZ 727
1886 Fixed a possible memory leak when deleting thermal/processor objects. Any
1887 associated notify handlers (and objects) were not being deleted. Fiodor
1890 Fixed the ordering of the ASCII names in the global mutex table to match the
1891 actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug only.
1892 Vegard Nossum. BZ 726
1894 Enhanced the AcpiGetObjectInfo interface to return the number of required
1895 arguments if the object is a control method. Added this call to the debugger
1896 so the proper number of default arguments are passed to a method. This
1897 prevents a warning when executing methods from AcpiExec.
1899 Added a check for an invalid handle in AcpiGetObjectInfo. Return
1900 AE_BAD_PARAMETER if input handle is invalid. BZ 474
1902 Fixed an extraneous warning from exconfig.c on the 64-bit build.
1904 Example Code and Data Size: These are the sizes for the OS-independent
1905 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1906 debug version of the code includes the debug output trace mechanism and has a
1907 much larger code and data size.
1910 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
1911 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
1913 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
1914 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
1916 2) iASL Compiler/Disassembler and Tools:
1918 iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both
1919 resource descriptor names.
1921 iASL: Detect invalid ASCII characters in input (windows version). Removed the
1922 "-CF" flag from the flex compile, enables correct detection of non-ASCII
1923 characters in the input. BZ 441
1925 iASL: Eliminate warning when result of LoadTable is not used. Eliminate the
1926 "result of operation not used" warning when the DDB handle returned from
1927 LoadTable is not used. The warning is not needed. BZ 590
1929 AcpiExec: Add support for dynamic table load/unload. Now calls _CFG method to
1930 pass address of table to the AML. Added option to disable OpRegion simulation
1931 to allow creation of an OpRegion with a real address that was passed to _CFG.
1932 All of this allows testing of the Load and Unload operators from AcpiExec.
1934 Debugger: update tables command for unloaded tables. Handle unloaded tables
1935 and use the standard table header output routine.
1937 ----------------------------------------
1938 09 June 2008. Summary of changes for version 20080609:
1940 1) ACPI CA Core Subsystem:
1942 Implemented a workaround for reversed _PRT entries. A significant number of
1943 BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This
1944 change dynamically detects and repairs this problem. Provides compatibility
1945 with MS ACPI. BZ 6859
1947 Simplified the internal ACPI hardware interfaces to eliminate the locking
1948 flag parameter from Register Read/Write. Added a new external interface,
1949 AcpiGetRegisterUnlocked.
1951 Fixed a problem where the invocation of a GPE control method could hang. This
1952 was a regression introduced in 20080514. The new method argument count
1953 validation mechanism can enter an infinite loop when a GPE method is
1954 dispatched. Problem fixed by removing the obsolete code that passed GPE block
1955 information to the notify handler via the control method parameter pointer.
1957 Fixed a problem where the _SST execution status was incorrectly returned to
1958 the caller of AcpiEnterSleepStatePrep. This was a regression introduced in
1959 20080514. _SST is optional and a NOT_FOUND exception should never be
1962 Fixed a problem where a deleted object could be accessed from within the AML
1963 parser. This was a regression introduced in version 20080123 as a fix for the
1964 Unload operator. Lin Ming. BZ 10669
1966 Cleaned up the debug operand dump mechanism. Eliminated unnecessary operands
1967 and eliminated the use of a negative index in a loop. Operands are now
1968 displayed in the correct order, not backwards. This also fixes a regression
1969 introduced in 20080514 on 64-bit systems where the elimination of
1970 ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 715
1972 Fixed a possible memory leak in EvPciConfigRegionSetup where the error exit
1973 path did not delete a locally allocated structure.
1975 Updated definitions for the DMAR and SRAT tables to synchronize with the
1976 current specifications. Includes disassembler support.
1978 Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect
1979 loop termination value was used. Loop terminated on iteration early, missing
1980 one mutex. Linn Crosetto
1982 Example Code and Data Size: These are the sizes for the OS-independent
1983 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1984 debug version of the code includes the debug output trace mechanism and has a
1985 much larger code and data size.
1988 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
1989 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
1991 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
1992 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
1994 2) iASL Compiler/Disassembler and Tools:
1996 Disassembler: Implemented support for EisaId() within _CID objects. Now
1997 disassemble integer _CID objects back to EisaId invocations, including
1998 multiple integers within _CID packages. Includes single-step support for
2001 Disassembler: Added support for DMAR and SRAT table definition changes.
2003 ----------------------------------------
2004 14 May 2008. Summary of changes for version 20080514:
2006 1) ACPI CA Core Subsystem:
2008 Fixed a problem where GPEs were enabled too early during the ACPICA
2009 initialization. This could lead to "handler not installed" errors on some
2010 machines. Moved GPE enable until after _REG/_STA/_INI methods are run. This
2011 ensures that all operation regions and devices throughout the namespace have
2012 been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916.
2014 Implemented a change to the enter sleep code. Moved execution of the _GTS
2015 method to just before setting sleep enable bit. The execution was moved from
2016 AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed
2017 immediately before the SLP_EN bit is set, as per the ACPI specification.
2020 Implemented a fix to disable unknown GPEs (2nd version). Now always disable
2021 the GPE, even if ACPICA thinks that that it is already disabled. It is
2022 possible that the AML or some other code has enabled the GPE unbeknownst to
2025 Fixed a problem with the Field operator where zero-length fields would return
2026 an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length ASL
2027 field declarations in Field(), BankField(), and IndexField(). BZ 10606.
2029 Implemented a fix for the Load operator, now load the table at the namespace
2030 root. This reverts a change introduced in version 20071019. The table is now
2031 loaded at the namespace root even though this goes against the ACPI
2032 specification. This provides compatibility with other ACPI implementations.
2033 The ACPI specification will be updated to reflect this in ACPI 4.0. Lin Ming.
2035 Fixed a problem where ACPICA would not Load() tables with unusual signatures.
2036 Now ignore ACPI table signature for Load() operator. Only "SSDT" is
2037 acceptable to the ACPI spec, but tables are seen with OEMx and null sigs.
2038 Therefore, signature validation is worthless. Apparently MS ACPI accepts such
2039 signatures, ACPICA must be compatible. BZ 10454.
2041 Fixed a possible negative array index in AcpiUtValidateException. Added NULL
2042 fields to the exception string arrays to eliminate a -1 subtraction on the
2045 Updated the debug tracking macros to reduce overall code and data size.
2046 Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings
2047 instead of pointers to static strings. Jan Beulich and Bob Moore.
2049 Implemented argument count checking in control method invocation via
2050 AcpiEvaluateObject. Now emit an error if too few arguments, warning if too
2051 many. This applies only to extern programmatic control method execution, not
2052 method-to-method calls within the AML. Lin Ming.
2054 Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is no
2055 longer needed, especially with the removal of 16-bit support. It was replaced
2056 mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 bit on
2057 32/64-bit platforms is required.
2059 Added the C const qualifier for appropriate string constants -- mostly
2060 MODULE_NAME and printf format strings. Jan Beulich.
2062 Example Code and Data Size: These are the sizes for the OS-independent
2063 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2064 debug version of the code includes the debug output trace mechanism and has a
2065 much larger code and data size.
2068 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
2069 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
2071 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
2072 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
2074 2) iASL Compiler/Disassembler and Tools:
2076 Implemented ACPI table revision ID validation in the disassembler. Zero is
2077 always invalid. For DSDTs, the ID controls the interpreter integer width. 1
2078 means 32-bit and this is unusual. 2 or greater is 64-bit.
2080 ----------------------------------------
2081 21 March 2008. Summary of changes for version 20080321:
2083 1) ACPI CA Core Subsystem:
2085 Implemented an additional change to the GPE support in order to suppress
2086 spurious or stray GPEs. The AcpiEvDisableGpe function will now permanently
2087 disable incoming GPEs that are neither enabled nor disabled -- meaning that
2088 the GPE is unknown to the system. This should prevent future interrupt floods
2089 from that GPE. BZ 6217 (Zhang Rui)
2091 Fixed a problem where NULL package elements were not returned to the
2092 AcpiEvaluateObject interface correctly. The element was simply ignored
2093 instead of returning a NULL ACPI_OBJECT package element, potentially causing
2094 a buffer overflow and/or confusing the caller who expected a fixed number of
2095 elements. BZ 10132 (Lin Ming, Bob Moore)
2097 Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word, Dword,
2098 Qword), Field, BankField, and IndexField operators when invoked from inside
2099 an executing control method. In this case, these operators created namespace
2100 nodes that were incorrectly left marked as permanent nodes instead of
2101 temporary nodes. This could cause a problem if there is race condition
2102 between an exiting control method and a running namespace walk. (Reported by
2105 Fixed a problem where the CreateField and CreateXXXField operators would
2106 incorrectly allow duplicate names (the name of the field) with no exception
2109 Implemented several changes for Notify handling. Added support for new Notify
2110 values (ACPI 2.0+) and improved the Notify debug output. Notify on
2111 PowerResource objects is no longer allowed, as per the ACPI specification.
2112 (Bob Moore, Zhang Rui)
2114 All Reference Objects returned via the AcpiEvaluateObject interface are now
2115 marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved for
2116 NULL objects - either NULL package elements or unresolved named references.
2118 Fixed a problem where an extraneous debug message was produced for package
2119 objects (when debugging enabled). The message "Package List length larger
2120 than NumElements count" is now produced in the correct case, and is now an
2121 error message rather than a debug message. Added a debug message for the
2122 opposite case, where NumElements is larger than the Package List (the package
2123 will be padded out with NULL elements as per the ACPI spec.)
2125 Implemented several improvements for the output of the ASL "Debug" object to
2126 clarify and keep all data for a given object on one output line.
2128 Fixed two size calculation issues with the variable-length Start Dependent
2129 resource descriptor.
2131 Example Code and Data Size: These are the sizes for the OS-independent
2132 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2133 debug version of the code includes the debug output trace mechanism and has
2134 a much larger code and data size.
2137 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
2138 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
2140 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
2141 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
2143 2) iASL Compiler/Disassembler and Tools:
2145 Fixed a problem with the use of the Switch operator where execution of the
2146 containing method by multiple concurrent threads could cause an
2147 AE_ALREADY_EXISTS exception. This is caused by the fact that there is no
2148 actual Switch opcode, it must be simulated with local named temporary
2149 variables and if/else pairs. The solution chosen was to mark any method that
2150 uses Switch as Serialized, thus preventing multiple thread entries. BZ 469.
2152 ----------------------------------------
2153 13 February 2008. Summary of changes for version 20080213:
2155 1) ACPI CA Core Subsystem:
2157 Implemented another MS compatibility design change for GPE/Notify handling.
2158 GPEs are now cleared/enabled asynchronously to allow all pending notifies to
2159 complete first. It is expected that the OSL will queue the enable request
2160 behind all pending notify requests (may require changes to the local host OSL
2161 in AcpiOsExecute). Alexey Starikovskiy.
2163 Fixed a problem where buffer and package objects passed as arguments to a
2164 control method via the external AcpiEvaluateObject interface could cause an
2165 AE_AML_INTERNAL exception depending on the order and type of operators
2166 executed by the target control method.
2168 Fixed a problem where resource descriptor size optimization could cause a
2169 problem when a _CRS resource template is passed to a _SRS method. The _SRS
2170 resource template must use the same descriptors (with the same size) as
2171 returned from _CRS. This change affects the following resource descriptors:
2172 IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 9487)
2174 Fixed a problem where a CopyObject to RegionField, BankField, and IndexField
2175 objects did not perform an implicit conversion as it should. These types must
2176 retain their initial type permanently as per the ACPI specification. However,
2177 a CopyObject to all other object types should not perform an implicit
2178 conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388
2180 Fixed a problem with the AcpiGetDevices interface where the mechanism to
2181 match device CIDs did not examine the entire list of available CIDs, but
2182 instead aborted on the first non-matching CID. Andrew Patterson.
2184 Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro was
2185 inadvertently changed to return a 16-bit value instead of a 32-bit value,
2186 truncating the upper dword of a 64-bit value. This macro is only used to
2187 display debug output, so no incorrect calculations were made. Also,
2188 reimplemented the macro so that a 64-bit shift is not performed by
2189 inefficient compilers.
2191 Added missing va_end statements that should correspond with each va_start
2194 Example Code and Data Size: These are the sizes for the OS-independent
2195 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2196 debug version of the code includes the debug output trace mechanism and has
2197 a much larger code and data size.
2200 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
2201 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
2203 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
2204 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
2206 2) iASL Compiler/Disassembler and Tools:
2208 Implemented full disassembler support for the following new ACPI tables:
2209 BERT, EINJ, and ERST. Implemented partial disassembler support for the
2210 complicated HEST table. These tables support the Windows Hardware Error
2211 Architecture (WHEA).
2213 ----------------------------------------
2214 23 January 2008. Summary of changes for version 20080123:
2216 1) ACPI CA Core Subsystem:
2218 Added the 2008 copyright to all module headers and signons. This affects
2219 virtually every file in the ACPICA core subsystem, the iASL compiler, and
2220 the tools/utilities.
2222 Fixed a problem with the SizeOf operator when used with Package and Buffer
2223 objects. These objects have deferred execution for some arguments, and the
2224 execution is now completed before the SizeOf is executed. This problem caused
2225 unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) BZ
2228 Implemented an enhancement to the interpreter "slack mode". In the absence of
2229 an explicit return or an implicitly returned object from the last executed
2230 opcode, a control method will now implicitly return an integer of value 0 for
2231 Microsoft compatibility. (Lin Ming) BZ 392
2233 Fixed a problem with the Load operator where an exception was not returned in
2234 the case where the table is already loaded. (Lin Ming) BZ 463
2236 Implemented support for the use of DDBHandles as an Indexed Reference, as per
2237 the ACPI spec. (Lin Ming) BZ 486
2239 Implemented support for UserTerm (Method invocation) for the Unload operator
2240 as per the ACPI spec. (Lin Ming) BZ 580
2242 Fixed a problem with the LoadTable operator where the OemId and OemTableId
2243 input strings could cause unexpected failures if they were shorter than the
2244 maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576
2246 Implemented support for UserTerm (Method invocation) for the Unload operator
2247 as per the ACPI spec. (Lin Ming) BZ 580
2249 Implemented header file support for new ACPI tables - BERT, ERST, EINJ, HEST,
2250 IBFT, UEFI, WDAT. Disassembler support is forthcoming.
2252 Example Code and Data Size: These are the sizes for the OS-independent
2253 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2254 debug version of the code includes the debug output trace mechanism and has
2255 a much larger code and data size.
2258 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
2259 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
2261 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
2262 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
2264 2) iASL Compiler/Disassembler and Tools:
2266 Implemented support in the disassembler for checksum validation on incoming
2267 binary DSDTs and SSDTs. If incorrect, a message is displayed within the table
2268 header dump at the start of the disassembly.
2270 Implemented additional debugging information in the namespace listing file
2271 created during compilation. In addition to the namespace hierarchy, the full
2272 pathname to each namespace object is displayed.
2274 Fixed a problem with the disassembler where invalid ACPI tables could cause
2275 faults or infinite loops.
2277 Fixed an unexpected parse error when using the optional "parameter types"
2278 list in a control method declaration. (Lin Ming) BZ 397
2280 Fixed a problem where two External declarations with the same name did not
2281 cause an error (Lin Ming) BZ 509
2283 Implemented support for full TermArgs (adding Argx, Localx and method
2284 invocation) for the ParameterData parameter to the LoadTable operator. (Lin
2287 ----------------------------------------
2288 19 December 2007. Summary of changes for version 20071219:
2290 1) ACPI CA Core Subsystem:
2292 Implemented full support for deferred execution for the TermArg string
2293 arguments for DataTableRegion. This enables forward references and full
2294 operand resolution for the three string arguments. Similar to OperationRegion
2295 deferred argument execution.) Lin Ming. BZ 430
2297 Implemented full argument resolution support for the BankValue argument to
2298 BankField. Previously, only constants were supported, now any TermArg may be
2299 used. Lin Ming BZ 387, 393
2301 Fixed a problem with AcpiGetDevices where the search of a branch of the
2302 device tree could be terminated prematurely. In accordance with the ACPI
2303 specification, the search down the current branch is terminated if a device
2304 is both not present and not functional (instead of just not present.) Yakui
2307 Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly if
2308 the underlying AML code changed the GPE enable registers. Now, any unknown
2309 incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately disabled
2310 instead of simply ignored. Rui Zhang.
2312 Fixed a problem with Index Fields where the Index register was incorrectly
2313 limited to a maximum of 32 bits. Now any size may be used.
2315 Fixed a couple memory leaks associated with "implicit return" objects when
2316 the AML Interpreter slack mode is enabled. Lin Ming BZ 349
2318 Example Code and Data Size: These are the sizes for the OS-independent
2319 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2320 debug version of the code includes the debug output trace mechanism and has
2321 a much larger code and data size.
2324 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
2325 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
2327 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
2328 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
2330 ----------------------------------------
2331 14 November 2007. Summary of changes for version 20071114:
2333 1) ACPI CA Core Subsystem:
2335 Implemented event counters for each of the Fixed Events, the ACPI SCI
2336 (interrupt) itself, and control methods executed. Named
2337 AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. These
2338 should be useful for debugging and statistics.
2340 Implemented a new external interface, AcpiGetStatistics, to retrieve the
2341 contents of the various event counters. Returns the current values for
2342 AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and
2343 AcpiMethodCount. The interface can be expanded in the future if new counters
2344 are added. Device drivers should use this interface rather than access the
2347 Fixed a problem with the FromBCD and ToBCD operators. With some compilers,
2348 the ShortDivide function worked incorrectly, causing problems with the BCD
2349 functions with large input values. A truncation from 64-bit to 32-bit
2350 inadvertently occurred. Internal BZ 435. Lin Ming
2352 Fixed a problem with Index references passed as method arguments. References
2353 passed as arguments to control methods were dereferenced immediately (before
2354 control was passed to the called method). The references are now correctly
2355 passed directly to the called method. BZ 5389. Lin Ming
2357 Fixed a problem with CopyObject used in conjunction with the Index operator.
2358 The reference was incorrectly dereferenced before the copy. The reference is
2359 now correctly copied. BZ 5391. Lin Ming
2361 Fixed a problem with Control Method references within Package objects. These
2362 references are now correctly generated. This completes the package
2363 construction overhaul that began in version 20071019.
2365 Example Code and Data Size: These are the sizes for the OS-independent
2366 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2367 debug version of the code includes the debug output trace mechanism and has
2368 a much larger code and data size.
2371 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
2372 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
2374 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
2375 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
2378 2) iASL Compiler/Disassembler and Tools:
2380 The AcpiExec utility now installs handlers for all of the predefined
2381 Operation Region types. New types supported are: PCI_Config, CMOS, and
2384 Fixed a problem with the 64-bit version of AcpiExec where the extended (64-
2385 bit) address fields for the DSDT and FACS within the FADT were not being
2386 used, causing truncation of the upper 32-bits of these addresses. Lin Ming
2389 ----------------------------------------
2390 19 October 2007. Summary of changes for version 20071019:
2392 1) ACPI CA Core Subsystem:
2394 Fixed a problem with the Alias operator when the target of the alias is a
2395 named ASL operator that opens a new scope -- Scope, Device, PowerResource,
2396 Processor, and ThermalZone. In these cases, any children of the original
2397 operator could not be accessed via the alias, potentially causing unexpected
2398 AE_NOT_FOUND exceptions. (BZ 9067)
2400 Fixed a problem with the Package operator where all named references were
2401 created as object references and left otherwise unresolved. According to the
2402 ACPI specification, a Package can only contain Data Objects or references to
2403 control methods. The implication is that named references to Data Objects
2404 (Integer, Buffer, String, Package, BufferField, Field) should be resolved
2405 immediately upon package creation. This is the approach taken with this
2406 change. References to all other named objects (Methods, Devices, Scopes,
2407 etc.) are all now properly created as reference objects. (BZ 5328)
2409 Reverted a change to Notify handling that was introduced in version
2410 20070508. This version changed the Notify handling from asynchronous to
2411 fully synchronous (Device driver Notify handling with respect to the Notify
2412 ASL operator). It was found that this change caused more problems than it
2413 solved and was removed by most users.
2415 Fixed a problem with the Increment and Decrement operators where the type of
2416 the target object could be unexpectedly and incorrectly changed. (BZ 353)
2419 Fixed a problem with the Load and LoadTable operators where the table
2420 location within the namespace was ignored. Instead, the table was always
2421 loaded into the root or current scope. Lin Ming.
2423 Fixed a problem with the Load operator when loading a table from a buffer
2424 object. The input buffer was prematurely zeroed and/or deleted. (BZ 577)
2426 Fixed a problem with the Debug object where a store of a DdbHandle reference
2427 object to the Debug object could cause a fault.
2429 Added a table checksum verification for the Load operator, in the case where
2430 the load is from a buffer. (BZ 578).
2432 Implemented additional parameter validation for the LoadTable operator. The
2433 length of the input strings SignatureString, OemIdString, and OemTableId are
2434 now checked for maximum lengths. (BZ 582) Lin Ming.
2436 Example Code and Data Size: These are the sizes for the OS-independent
2437 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2438 debug version of the code includes the debug output trace mechanism and has
2439 a much larger code and data size.
2442 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
2443 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
2445 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
2446 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
2449 2) iASL Compiler/Disassembler:
2451 Fixed a problem where if a single file was specified and the file did not
2452 exist, no error message was emitted. (Introduced with wildcard support in
2455 ----------------------------------------
2456 19 September 2007. Summary of changes for version 20070919:
2458 1) ACPI CA Core Subsystem:
2460 Designed and implemented new external interfaces to install and remove
2461 handlers for ACPI table-related events. Current events that are defined are
2462 LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as
2463 they are dynamically loaded and unloaded. See AcpiInstallTableHandler and
2464 AcpiRemoveTableHandler. (Lin Ming and Bob Moore)
2466 Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag
2467 (acpi_serialized option on Linux) could cause some systems to hang during
2468 initialization. (Bob Moore) BZ 8171
2470 Fixed a problem where objects of certain types (Device, ThermalZone,
2471 Processor, PowerResource) can be not found if they are declared and
2472 referenced from within the same control method (Lin Ming) BZ 341
2474 Example Code and Data Size: These are the sizes for the OS-independent
2475 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2476 debug version of the code includes the debug output trace mechanism and has
2477 a much larger code and data size.
2480 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
2481 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
2483 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
2484 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
2487 2) iASL Compiler/Disassembler:
2489 Implemented support to allow multiple files to be compiled/disassembled in a
2490 single invocation. This includes command line wildcard support for both the
2491 Windows and Unix versions of the compiler. This feature simplifies the
2492 disassembly and compilation of multiple ACPI tables in a single directory.
2494 ----------------------------------------
2495 08 May 2007. Summary of changes for version 20070508:
2497 1) ACPI CA Core Subsystem:
2499 Implemented a Microsoft compatibility design change for the handling of the
2500 Notify AML operator. Previously, notify handlers were dispatched and
2501 executed completely asynchronously in a deferred thread. The new design
2502 still executes the notify handlers in a different thread, but the original
2503 thread that executed the Notify() now waits at a synchronization point for
2504 the notify handler to complete. Some machines depend on a synchronous Notify
2505 operator in order to operate correctly.
2507 Implemented support to allow Package objects to be passed as method
2508 arguments to the external AcpiEvaluateObject interface. Previously, this
2509 would return the AE_NOT_IMPLEMENTED exception. This feature had not been
2510 implemented since there were no reserved control methods that required it
2513 Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs that
2514 contained invalid non-zero values in reserved fields could cause later
2515 failures because these fields have meaning in later revisions of the FADT.
2516 For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The fields
2517 are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.)
2519 Fixed a problem where the Global Lock handle was not properly updated if a
2520 thread that acquired the Global Lock via executing AML code then attempted
2521 to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by Joe
2524 Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list
2525 could be corrupted if the interrupt being removed was at the head of the
2526 list. Reported by Linn Crosetto.
2528 Example Code and Data Size: These are the sizes for the OS-independent
2529 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2530 debug version of the code includes the debug output trace mechanism and has
2531 a much larger code and data size.
2534 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
2535 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
2537 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
2538 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
2540 ----------------------------------------
2541 20 March 2007. Summary of changes for version 20070320:
2543 1) ACPI CA Core Subsystem:
2545 Implemented a change to the order of interpretation and evaluation of AML
2546 operand objects within the AML interpreter. The interpreter now evaluates
2547 operands in the order that they appear in the AML stream (and the
2548 corresponding ASL code), instead of in the reverse order (after the entire
2549 operand list has been parsed). The previous behavior caused several subtle
2550 incompatibilities with the Microsoft AML interpreter as well as being
2551 somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov.
2553 Implemented a change to the ACPI Global Lock support. All interfaces to the
2554 global lock now allow the same thread to acquire the lock multiple times.
2555 This affects the AcpiAcquireGlobalLock external interface to the global lock
2556 as well as the internal use of the global lock to support AML fields -- a
2557 control method that is holding the global lock can now simultaneously access
2558 AML fields that require global lock protection. Previously, in both cases,
2559 this would have resulted in an AE_ALREADY_ACQUIRED exception. The change to
2560 AcpiAcquireGlobalLock is of special interest to drivers for the Embedded
2561 Controller. There is no change to the behavior of the AML Acquire operator,
2562 as this can already be used to acquire a mutex multiple times by the same
2563 thread. BZ 8066. With assistance from Alexey Starikovskiy.
2565 Fixed a problem where invalid objects could be referenced in the AML
2566 Interpreter after error conditions. During operand evaluation, ensure that
2567 the internal "Return Object" field is cleared on error and only valid
2568 pointers are stored there. Caused occasional access to deleted objects that
2569 resulted in "large reference count" warning messages. Valery Podrezov.
2571 Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur on
2572 deeply nested control method invocations. BZ 7873, local BZ 487. Valery
2575 Fixed an internal problem with the handling of result objects on the
2576 interpreter result stack. BZ 7872. Valery Podrezov.
2578 Removed obsolete code that handled the case where AML_NAME_OP is the target
2579 of a reference (Reference.Opcode). This code was no longer necessary. BZ
2580 7874. Valery Podrezov.
2582 Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This was a
2583 remnant from the previously discontinued 16-bit support.
2585 Example Code and Data Size: These are the sizes for the OS-independent
2586 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2587 debug version of the code includes the debug output trace mechanism and has
2588 a much larger code and data size.
2591 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
2592 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
2594 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
2595 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
2597 ----------------------------------------
2598 26 January 2007. Summary of changes for version 20070126:
2600 1) ACPI CA Core Subsystem:
2602 Added the 2007 copyright to all module headers and signons. This affects
2603 virtually every file in the ACPICA core subsystem, the iASL compiler, and
2606 Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable
2607 during a table load. A bad pointer was passed in the case where the DSDT is
2608 overridden, causing a fault in this case.
2610 Example Code and Data Size: These are the sizes for the OS-independent
2611 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2612 debug version of the code includes the debug output trace mechanism and has
2613 a much larger code and data size.
2616 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
2617 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
2619 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
2620 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
2622 ----------------------------------------
2623 15 December 2006. Summary of changes for version 20061215:
2625 1) ACPI CA Core Subsystem:
2627 Support for 16-bit ACPICA has been completely removed since it is no longer
2628 necessary and it clutters the code. All 16-bit macros, types, and
2629 conditional compiles have been removed, cleaning up and simplifying the code
2630 across the entire subsystem. DOS support is no longer needed since the
2631 bootable Linux firmware kit is now available.
2633 The handler for the Global Lock is now removed during AcpiTerminate to
2634 enable a clean subsystem restart, via the implementation of the
2635 AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz,
2638 Implemented enhancements to the multithreading support within the debugger
2639 to enable improved multithreading debugging and evaluation of the subsystem.
2642 Debugger: Enhanced the Statistics/Memory command to emit the total (maximum)
2643 memory used during the execution, as well as the maximum memory consumed by
2644 each of the various object types. (Valery Podrezov)
2646 Example Code and Data Size: These are the sizes for the OS-independent
2647 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2648 debug version of the code includes the debug output trace mechanism and has
2649 a much larger code and data size.
2652 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
2653 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
2655 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
2656 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
2659 2) iASL Compiler/Disassembler and Tools:
2661 AcpiExec: Implemented a new option (-m) to display full memory use
2662 statistics upon subsystem/program termination. (Valery Podrezov)
2664 ----------------------------------------
2665 09 November 2006. Summary of changes for version 20061109:
2667 1) ACPI CA Core Subsystem:
2669 Optimized the Load ASL operator in the case where the source operand is an
2670 operation region. Simply map the operation region memory, instead of
2671 performing a bytewise read. (Region must be of type SystemMemory, see
2674 Fixed the Load ASL operator for the case where the source operand is a
2675 region field. A buffer object is also allowed as the source operand. BZ 480
2677 Fixed a problem where the Load ASL operator allowed the source operand to be
2678 an operation region of any type. It is now restricted to regions of type
2679 SystemMemory, as per the ACPI specification. BZ 481
2681 Additional cleanup and optimizations for the new Table Manager code.
2683 AcpiEnable will now fail if all of the required ACPI tables are not loaded
2684 (FADT, FACS, DSDT). BZ 477
2686 Added #pragma pack(8/4) to acobject.h to ensure that the structures in this
2687 header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been
2688 manually optimized to be aligned and will not work if it is byte-packed.
2690 Example Code and Data Size: These are the sizes for the OS-independent
2691 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2692 debug version of the code includes the debug output trace mechanism and has
2693 a much larger code and data size.
2696 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
2697 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
2699 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
2700 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
2703 2) iASL Compiler/Disassembler and Tools:
2705 Fixed a problem where the presence of the _OSI predefined control method
2706 within complex expressions could cause an internal compiler error.
2708 AcpiExec: Implemented full region support for multiple address spaces.
2709 SpaceId is now part of the REGION object. BZ 429
2711 ----------------------------------------
2712 11 October 2006. Summary of changes for version 20061011:
2714 1) ACPI CA Core Subsystem:
2716 Completed an AML interpreter performance enhancement for control method
2717 execution. Previously a 2-pass parse/execution, control methods are now
2718 completely parsed and executed in a single pass. This improves overall
2719 interpreter performance by ~25%, reduces code size, and reduces CPU stack
2720 use. (Valery Podrezov + interpreter changes in version 20051202 that
2721 eliminated namespace loading during the pass one parse.)
2723 Implemented _CID support for PCI Root Bridge detection. If the _HID does not
2724 match the predefined PCI Root Bridge IDs, the _CID list (if present) is now
2725 obtained and also checked for an ID match.
2727 Implemented additional support for the PCI _ADR execution: upsearch until a
2728 device scope is found before executing _ADR. This allows PCI_Config
2729 operation regions to be declared locally within control methods underneath
2732 Fixed a problem with a possible race condition between threads executing
2733 AcpiWalkNamespace and the AML interpreter. This condition was removed by
2734 modifying AcpiWalkNamespace to (by default) ignore all temporary namespace
2735 entries created during any concurrent control method execution. An
2736 additional namespace race condition is known to exist between
2737 AcpiWalkNamespace and the Load/Unload ASL operators and is still under
2740 Restructured the AML ParseLoop function, breaking it into several
2741 subfunctions in order to reduce CPU stack use and improve maintainability.
2744 AcpiGetHandle: Fix for parameter validation to detect invalid combinations
2745 of prefix handle and pathname. BZ 478
2747 Example Code and Data Size: These are the sizes for the OS-independent
2748 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2749 debug version of the code includes the debug output trace mechanism and has
2750 a much larger code and data size.
2753 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
2754 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
2756 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
2757 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
2759 2) iASL Compiler/Disassembler and Tools:
2761 Ported the -g option (get local ACPI tables) to the new ACPICA Table Manager
2762 to restore original behavior.
2764 ----------------------------------------
2765 27 September 2006. Summary of changes for version 20060927:
2767 1) ACPI CA Core Subsystem:
2769 Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister.
2770 These functions now use a spinlock for mutual exclusion and the interrupt
2771 level indication flag is not needed.
2773 Fixed a problem with the Global Lock where the lock could appear to be
2774 obtained before it is actually obtained. The global lock semaphore was
2775 inadvertently created with one unit instead of zero units. (BZ 464) Fiodor
2778 Fixed a possible memory leak and fault in AcpiExResolveObjectToValue during
2779 a read from a buffer or region field. (BZ 458) Fiodor Suietov.
2781 Example Code and Data Size: These are the sizes for the OS-independent
2782 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2783 debug version of the code includes the debug output trace mechanism and has
2784 a much larger code and data size.
2787 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
2788 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
2790 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
2791 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
2794 2) iASL Compiler/Disassembler and Tools:
2796 Fixed a compilation problem with the pre-defined Resource Descriptor field
2797 names where an "object does not exist" error could be incorrectly generated
2798 if the parent ResourceTemplate pathname places the template within a
2799 different namespace scope than the current scope. (BZ 7212)
2801 Fixed a problem where the compiler could hang after syntax errors detected
2802 in an ElseIf construct. (BZ 453)
2804 Fixed a problem with the AmlFilename parameter to the DefinitionBlock()
2805 operator. An incorrect output filename was produced when this parameter was
2806 a null string (""). Now, the original input filename is used as the AML
2807 output filename, with an ".aml" extension.
2809 Implemented a generic batch command mode for the AcpiExec utility (execute
2810 any AML debugger command) (Valery Podrezov).
2812 ----------------------------------------
2813 12 September 2006. Summary of changes for version 20060912:
2815 1) ACPI CA Core Subsystem:
2817 Enhanced the implementation of the "serialized mode" of the interpreter
2818 (enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is
2819 specified, instead of creating a serialization semaphore per control method,
2820 the interpreter lock is simply no longer released before a blocking
2821 operation during control method execution. This effectively makes the AML
2822 Interpreter single-threaded. The overhead of a semaphore per-method is
2825 Fixed a regression where an error was no longer emitted if a control method
2826 attempts to create 2 objects of the same name. This once again returns
2827 AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism that
2828 will dynamically serialize the control method to possible prevent future
2831 Integrated a fix for a problem with PCI Express HID detection in the PCI
2832 Config Space setup procedure. (BZ 7145)
2834 Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the
2835 AcpiHwInitialize function - the FADT registers are now validated when the
2838 Added two new warnings during FADT verification - 1) if the FADT is larger
2839 than the largest known FADT version, and 2) if there is a mismatch between a
2840 32-bit block address and the 64-bit X counterpart (when both are non-zero.)
2842 Example Code and Data Size: These are the sizes for the OS-independent
2843 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2844 debug version of the code includes the debug output trace mechanism and has
2845 a much larger code and data size.
2848 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
2849 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
2851 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
2852 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
2855 2) iASL Compiler/Disassembler and Tools:
2857 Fixed a problem with the implementation of the Switch() operator where the
2858 temporary variable was declared too close to the actual Switch, instead of
2859 at method level. This could cause a problem if the Switch() operator is
2860 within a while loop, causing an error on the second iteration. (BZ 460)
2862 Disassembler - fix for error emitted for unknown type for target of scope
2863 operator. Now, ignore it and continue.
2865 Disassembly of an FADT now verifies the input FADT and reports any errors
2866 found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs.
2868 Disassembly of raw data buffers with byte initialization data now prefixes
2869 each output line with the current buffer offset.
2871 Disassembly of ASF! table now includes all variable-length data fields at
2872 the end of some of the subtables.
2874 The disassembler now emits a comment if a buffer appears to be a
2875 ResourceTemplate, but cannot be disassembled as such because the EndTag does
2876 not appear at the very end of the buffer.
2878 AcpiExec - Added the "-t" command line option to enable the serialized mode
2879 of the AML interpreter.
2881 ----------------------------------------
2882 31 August 2006. Summary of changes for version 20060831:
2884 1) ACPI CA Core Subsystem:
2886 Miscellaneous fixes for the Table Manager:
2887 - Correctly initialize internal common FADT for all 64-bit "X" fields
2888 - Fixed a couple table mapping issues during table load
2889 - Fixed a couple alignment issues for IA64
2890 - Initialize input array to zero in AcpiInitializeTables
2891 - Additional parameter validation for AcpiGetTable, AcpiGetTableHeader,
2894 Change for GPE support: when a "wake" GPE is received, all wake GPEs are now
2895 immediately disabled to prevent the waking GPE from firing again and to
2896 prevent other wake GPEs from interrupting the wake process.
2898 Added the AcpiGpeCount global that tracks the number of processed GPEs, to
2899 be used for debugging systems with a large number of ACPI interrupts.
2901 Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in
2902 both the ACPICA headers and the disassembler.
2904 Example Code and Data Size: These are the sizes for the OS-independent
2905 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2906 debug version of the code includes the debug output trace mechanism and has
2907 a much larger code and data size.
2910 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
2911 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
2913 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
2914 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
2917 2) iASL Compiler/Disassembler and Tools:
2919 Disassembler support for the DMAR ACPI table.
2921 ----------------------------------------
2922 23 August 2006. Summary of changes for version 20060823:
2924 1) ACPI CA Core Subsystem:
2926 The Table Manager component has been completely redesigned and
2927 reimplemented. The new design is much simpler, and reduces the overall code
2928 and data size of the kernel-resident ACPICA by approximately 5%. Also, it is
2929 now possible to obtain the ACPI tables very early during kernel
2930 initialization, even before dynamic memory management is initialized.
2931 (Alexey Starikovskiy, Fiodor Suietov, Bob Moore)
2933 Obsolete ACPICA interfaces:
2935 - AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel init
2937 - AcpiLoadTable: Not needed.
2938 - AcpiUnloadTable: Not needed.
2940 New ACPICA interfaces:
2942 - AcpiInitializeTables: Must be called before the table manager can be used.
2943 - AcpiReallocateRootTable: Used to transfer the root table to dynamically
2944 allocated memory after it becomes available.
2945 - AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI tables
2948 Other ACPICA changes:
2950 - AcpiGetTableHeader returns the actual mapped table header, not a copy. Use
2951 AcpiOsUnmapMemory to free this mapping.
2952 - AcpiGetTable returns the actual mapped table. The mapping is managed
2953 internally and must not be deleted by the caller. Use of this interface
2954 causes no additional dynamic memory allocation.
2955 - AcpiFindRootPointer: Support for physical addressing has been eliminated,
2956 it appeared to be unused.
2957 - The interface to AcpiOsMapMemory has changed to be consistent with the
2958 other allocation interfaces.
2959 - The interface to AcpiOsGetRootPointer has changed to eliminate unnecessary
2961 - ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 64-
2962 bit platforms. Was previously 64 bits on all platforms.
2963 - The interface to the ACPI Global Lock acquire/release macros have changed
2964 slightly since ACPICA no longer keeps a local copy of the FACS with a
2965 constructed pointer to the actual global lock.
2967 Porting to the new table manager:
2969 - AcpiInitializeTables: Must be called once, and can be called anytime
2970 during the OS initialization process. It allows the host to specify an area
2971 of memory to be used to store the internal version of the RSDT/XSDT (root
2972 table). This allows the host to access ACPI tables before memory management
2973 is initialized and running.
2974 - AcpiReallocateRootTable: Can be called after memory management is running
2975 to copy the root table to a dynamically allocated array, freeing up the
2976 scratch memory specified in the call to AcpiInitializeTables.
2977 - AcpiSubsystemInitialize: This existing interface is independent of the
2978 Table Manager, and does not have to be called before the Table Manager can
2979 be used, it only must be called before the rest of ACPICA can be used.
2980 - ACPI Tables: Some changes have been made to the names and structure of the
2981 actbl.h and actbl1.h header files and may require changes to existing code.
2982 For example, bitfields have been completely removed because of their lack of
2983 portability across C compilers.
2984 - Update interfaces to the Global Lock acquire/release macros if local
2985 versions are used. (see acwin.h)
2987 Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c
2991 Example Code and Data Size: These are the sizes for the OS-independent
2992 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2993 debug version of the code includes the debug output trace mechanism and has
2994 a much larger code and data size.
2997 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
2998 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
3000 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
3001 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
3004 2) iASL Compiler/Disassembler and Tools:
3006 No changes for this release.
3008 ----------------------------------------
3009 21 July 2006. Summary of changes for version 20060721:
3011 1) ACPI CA Core Subsystem:
3013 The full source code for the ASL test suite used to validate the iASL
3014 compiler and the ACPICA core subsystem is being released with the ACPICA
3015 source for the first time. The source is contained in a separate package and
3016 consists of over 1100 files that exercise all ASL/AML operators. The package
3017 should appear on the Intel/ACPI web site shortly. (Valery Podrezov, Fiodor
3020 Completed a new design and implementation for support of the ACPI Global
3021 Lock. On the OS side, the global lock is now treated as a standard AML
3022 mutex. Previously, multiple OS threads could "acquire" the global lock
3023 simultaneously. However, this could cause the BIOS to be starved out of the
3024 lock - especially in cases such as the Embedded Controller driver where
3025 there is a tight coupling between the OS and the BIOS.
3027 Implemented an optimization for the ACPI Global Lock interrupt mechanism.
3028 The Global Lock interrupt handler no longer queues the execution of a
3029 separate thread to signal the global lock semaphore. Instead, the semaphore
3030 is signaled directly from the interrupt handler.
3032 Implemented support within the AML interpreter for package objects that
3033 contain a larger AML length (package list length) than the package element
3034 count. In this case, the length of the package is truncated to match the
3035 package element count. Some BIOS code apparently modifies the package length
3036 on the fly, and this change supports this behavior. Provides compatibility
3037 with the MS AML interpreter. (With assistance from Fiodor Suietov)
3039 Implemented a temporary fix for the BankValue parameter of a Bank Field to
3040 support all constant values, now including the Zero and One opcodes.
3041 Evaluation of this parameter must eventually be converted to a full TermArg
3042 evaluation. A not-implemented error is now returned (temporarily) for non-
3043 constant values for this parameter.
3045 Fixed problem reports (Fiodor Suietov) integrated:
3046 - Fix for premature object deletion after CopyObject on Operation Region (BZ
3049 Example Code and Data Size: These are the sizes for the OS-independent
3050 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3051 debug version of the code includes the debug output trace mechanism and has
3052 a much larger code and data size.
3055 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total
3056 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total
3058 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
3059 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
3062 2) iASL Compiler/Disassembler and Tools:
3064 No changes for this release.
3066 ----------------------------------------
3067 07 July 2006. Summary of changes for version 20060707:
3069 1) ACPI CA Core Subsystem:
3071 Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers
3072 that do not allow the initialization of address pointers within packed
3073 structures - even though the hardware itself may support misaligned
3074 transfers. Some of the debug data structures are packed by default to
3077 Added an error message for the case where AcpiOsGetThreadId() returns zero.
3078 A non-zero value is required by the core ACPICA code to ensure the proper
3079 operation of AML mutexes and recursive control methods.
3081 The DSDT is now the only ACPI table that determines whether the AML
3082 interpreter is in 32-bit or 64-bit mode. Not really a functional change, but
3083 the hooks for per-table 32/64 switching have been removed from the code. A
3084 clarification to the ACPI specification is forthcoming in ACPI 3.0B.
3086 Fixed a possible leak of an OwnerID in the error path of
3087 AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID
3088 deletion to a single place in AcpiTbUninstallTable to correct possible leaks
3089 when using the AcpiTbDeleteTablesByType interface (with assistance from
3092 Fixed a problem with Serialized control methods where the semaphore
3093 associated with the method could be over-signaled after multiple method
3096 Fixed two issues with the locking of the internal namespace data structure.
3097 Both the Unload() operator and AcpiUnloadTable interface now lock the
3098 namespace during the namespace deletion associated with the table unload
3099 (with assistance from Linn Crosetto.)
3101 Fixed problem reports (Valery Podrezov) integrated:
3102 - Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426)
3104 Fixed problem reports (Fiodor Suietov) integrated:
3105 - Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369)
3106 - On Address Space handler deletion, needless deactivation call (BZ 374)
3107 - AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 375)
3108 - Possible memory leak, Notify sub-objects of Processor, Power, ThermalZone
3110 - AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378)
3111 - Minimum Length of RSDT should be validated (BZ 379)
3112 - AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no
3114 - AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type loaded
3117 Example Code and Data Size: These are the sizes for the OS-independent
3118 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3119 debug version of the code includes the debug output trace mechanism and has
3120 a much larger code and data size.
3123 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
3124 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
3126 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
3127 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
3130 2) iASL Compiler/Disassembler and Tools:
3132 Fixed problem reports:
3133 Compiler segfault when ASL contains a long (>1024) String declaration (BZ
3136 ----------------------------------------
3137 23 June 2006. Summary of changes for version 20060623:
3139 1) ACPI CA Core Subsystem:
3141 Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This
3142 allows the type to be customized to the host OS for improved efficiency
3143 (since a spinlock is usually a very small object.)
3145 Implemented support for "ignored" bits in the ACPI registers. According to
3146 the ACPI specification, these bits should be preserved when writing the
3147 registers via a read/modify/write cycle. There are 3 bits preserved in this
3148 manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11].
3150 Implemented the initial deployment of new OSL mutex interfaces. Since some
3151 host operating systems have separate mutex and semaphore objects, this
3152 feature was requested. The base code now uses mutexes (and the new mutex
3153 interfaces) wherever a binary semaphore was used previously. However, for
3154 the current release, the mutex interfaces are defined as macros to map them
3155 to the existing semaphore interfaces. Therefore, no OSL changes are required
3156 at this time. (See acpiosxf.h)
3158 Fixed several problems with the support for the control method SyncLevel
3159 parameter. The SyncLevel now works according to the ACPI specification and
3160 in concert with the Mutex SyncLevel parameter, since the current SyncLevel
3161 is a property of the executing thread. Mutual exclusion for control methods
3162 is now implemented with a mutex instead of a semaphore.
3164 Fixed three instances of the use of the C shift operator in the bitfield
3165 support code (exfldio.c) to avoid the use of a shift value larger than the
3166 target data width. The behavior of C compilers is undefined in this case and
3167 can cause unpredictable results, and therefore the case must be detected and
3168 avoided. (Fiodor Suietov)
3170 Added an info message whenever an SSDT or OEM table is loaded dynamically
3171 via the Load() or LoadTable() ASL operators. This should improve debugging
3172 capability since it will show exactly what tables have been loaded (beyond
3173 the tables present in the RSDT/XSDT.)
3175 Example Code and Data Size: These are the sizes for the OS-independent
3176 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3177 debug version of the code includes the debug output trace mechanism and has
3178 a much larger code and data size.
3181 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
3182 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
3184 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
3185 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
3188 2) iASL Compiler/Disassembler and Tools:
3190 No changes for this release.
3192 ----------------------------------------
3193 08 June 2006. Summary of changes for version 20060608:
3195 1) ACPI CA Core Subsystem:
3197 Converted the locking mutex used for the ACPI hardware to a spinlock. This
3198 change should eliminate all problems caused by attempting to acquire a
3199 semaphore at interrupt level, and it means that all ACPICA external
3200 interfaces that directly access the ACPI hardware can be safely called from
3201 interrupt level. OSL code that implements the semaphore interfaces should be
3202 able to eliminate any workarounds for being called at interrupt level.
3204 Fixed a regression introduced in 20060526 where the ACPI device
3205 initialization could be prematurely aborted with an AE_NOT_FOUND if a device
3206 did not have an optional _INI method.
3208 Fixed an IndexField issue where a write to the Data Register should be
3209 limited in size to the AccessSize (width) of the IndexField itself. (BZ 433,
3212 Fixed problem reports (Valery Podrezov) integrated:
3213 - Allow store of ThermalZone objects to Debug object (BZ 5369/5370)
3215 Fixed problem reports (Fiodor Suietov) integrated:
3216 - AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364)
3218 Removed four global mutexes that were obsolete and were no longer being
3221 Example Code and Data Size: These are the sizes for the OS-independent
3222 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3223 debug version of the code includes the debug output trace mechanism and has
3224 a much larger code and data size.
3227 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
3228 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
3230 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
3231 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
3234 2) iASL Compiler/Disassembler and Tools:
3236 Fixed a fault when using -g option (get tables from registry) on Windows
3239 Fixed problem reports integrated:
3240 - Generate error if CreateField NumBits parameter is zero. (BZ 405)
3241 - Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor
3243 - Global table revision override (-r) is ignored (BZ 413)
3245 ----------------------------------------
3246 26 May 2006. Summary of changes for version 20060526:
3248 1) ACPI CA Core Subsystem:
3250 Restructured, flattened, and simplified the internal interfaces for
3251 namespace object evaluation - resulting in smaller code, less CPU stack use,
3252 and fewer interfaces. (With assistance from Mikhail Kouzmich)
3254 Fixed a problem with the CopyObject operator where the first parameter was
3255 not typed correctly for the parser, interpreter, compiler, and disassembler.
3256 Caused various errors and unexpected behavior.
3258 Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits
3259 produced incorrect results with some C compilers. Since the behavior of C
3260 compilers when the shift value is larger than the datatype width is
3261 apparently not well defined, the interpreter now detects this condition and
3262 simply returns zero as expected in all such cases. (BZ 395)
3264 Fixed problem reports (Valery Podrezov) integrated:
3265 - Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329)
3266 - Allow interpreter to handle nested method declarations (BZ 5361)
3268 Fixed problem reports (Fiodor Suietov) integrated:
3269 - AcpiTerminate doesn't free debug memory allocation list objects (BZ 355)
3270 - After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 356)
3271 - AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357)
3272 - Resource Manager should return AE_TYPE for non-device objects (BZ 358)
3273 - Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359)
3274 - Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360)
3275 - Incomplete cleanup branch in AcpiPsParseAml (BZ 361)
3276 - Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362)
3277 - AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ 365)
3278 - Status of the Global Initialization Handler call not used (BZ 366)
3279 - Incorrect object parameter to Global Initialization Handler (BZ 367)
3281 Example Code and Data Size: These are the sizes for the OS-independent
3282 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3283 debug version of the code includes the debug output trace mechanism and has
3284 a much larger code and data size.
3287 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
3288 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
3290 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
3291 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
3294 2) iASL Compiler/Disassembler and Tools:
3296 Modified the parser to allow the names IO, DMA, and IRQ to be used as
3297 namespace identifiers with no collision with existing resource descriptor
3298 macro names. This provides compatibility with other ASL compilers and is
3299 most useful for disassembly/recompilation of existing tables without parse
3300 errors. (With assistance from Thomas Renninger)
3302 Disassembler: fixed an incorrect disassembly problem with the
3303 DataTableRegion and CopyObject operators. Fixed a possible fault during
3304 disassembly of some Alias operators.
3306 ----------------------------------------
3307 12 May 2006. Summary of changes for version 20060512:
3309 1) ACPI CA Core Subsystem:
3311 Replaced the AcpiOsQueueForExecution interface with a new interface named
3312 AcpiOsExecute. The major difference is that the new interface does not have
3313 a Priority parameter, this appeared to be useless and has been replaced by a
3314 Type parameter. The Type tells the host what type of execution is being
3315 requested, such as global lock handler, notify handler, GPE handler, etc.
3316 This allows the host to queue and execute the request as appropriate for the
3317 request type, possibly using different work queues and different priorities
3318 for the various request types. This enables fixes for multithreading
3319 deadlock problems such as BZ #5534, and will require changes to all existing
3320 OS interface layers. (Alexey Starikovskiy and Bob Moore)
3322 Fixed a possible memory leak associated with the support for the so-called
3323 "implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor
3326 Fixed a problem with the Load() operator where a table load from an
3327 operation region could overwrite an internal table buffer by up to 7 bytes
3328 and cause alignment faults on IPF systems. (With assistance from Luming Yu)
3330 Example Code and Data Size: These are the sizes for the OS-independent
3331 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3332 debug version of the code includes the debug output trace mechanism and has
3333 a much larger code and data size.
3336 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
3337 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
3339 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
3340 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
3344 2) iASL Compiler/Disassembler and Tools:
3346 Disassembler: Implemented support to cross reference the internal namespace
3347 and automatically generate ASL External() statements for symbols not defined
3348 within the current table being disassembled. This will simplify the
3349 disassembly and recompilation of interdependent tables such as SSDTs since
3350 these statements will no longer have to be added manually.
3352 Disassembler: Implemented experimental support to automatically detect
3353 invocations of external control methods and generate appropriate External()
3354 statements. This is problematic because the AML cannot be correctly parsed
3355 until the number of arguments for each control method is known. Currently,
3356 standalone method invocations and invocations as the source operand of a
3357 Store() statement are supported.
3359 Disassembler: Implemented support for the ASL pseudo-operators LNotEqual,
3360 LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()),
3361 LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code
3362 more readable and likely closer to the original ASL source.
3364 ----------------------------------------
3365 21 April 2006. Summary of changes for version 20060421:
3367 1) ACPI CA Core Subsystem:
3369 Removed a device initialization optimization introduced in 20051216 where
3370 the _STA method was not run unless an _INI was also present for the same
3371 device. This optimization could cause problems because it could allow _INI
3372 methods to be run within a not-present device subtree. (If a not-present
3373 device had no _INI, _STA would not be run, the not-present status would not
3374 be discovered, and the children of the device would be incorrectly
3377 Implemented a new _STA optimization where namespace subtrees that do not
3378 contain _INI are identified and ignored during device initialization.
3379 Selectively running _STA can significantly improve boot time on large
3380 machines (with assistance from Len Brown.)
3382 Implemented support for the device initialization case where the returned
3383 _STA flags indicate a device not-present but functioning. In this case, _INI
3384 is not run, but the device children are examined for presence, as per the
3387 Implemented an additional change to the IndexField support in order to
3388 conform to MS behavior. The value written to the Index Register is not
3389 simply a byte offset, it is a byte offset in units of the access width of
3390 the parent Index Field. (Fiodor Suietov)
3392 Defined and deployed a new OSL interface, AcpiOsValidateAddress. This
3393 interface is called during the creation of all AML operation regions, and
3394 allows the host OS to exert control over what addresses it will allow the
3395 AML code to access. Operation Regions whose addresses are disallowed will
3396 cause a runtime exception when they are actually accessed (will not affect
3397 or abort table loading.) See oswinxf or osunixxf for an example
3400 Defined and deployed a new OSL interface, AcpiOsValidateInterface. This
3401 interface allows the host OS to match the various "optional"
3402 interface/behavior strings for the _OSI predefined control method as
3403 appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf
3404 for an example implementation.
3406 Restructured and corrected various problems in the exception handling code
3407 paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod
3408 (with assistance from Takayoshi Kochi.)
3410 Modified the Linux source converter to ignore quoted string literals while
3411 converting identifiers from mixed to lower case. This will correct problems
3412 with the disassembler and other areas where such strings must not be
3415 The ACPI_FUNCTION_* macros no longer require quotes around the function
3416 name. This allows the Linux source converter to convert the names, now that
3417 the converter ignores quoted strings.
3419 Example Code and Data Size: These are the sizes for the OS-independent
3420 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3421 debug version of the code includes the debug output trace mechanism and has
3422 a much larger code and data size.
3426 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
3427 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
3429 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
3430 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
3433 2) iASL Compiler/Disassembler and Tools:
3435 Implemented 3 new warnings for iASL, and implemented multiple warning levels
3438 1) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is not
3439 WAIT_FOREVER (0xFFFF) and the code does not examine the return value to
3440 check for the possible timeout, a warning is issued.
3442 2) Useless operators: If an ASL operator does not specify an optional target
3443 operand and it also does not use the function return value from the
3444 operator, a warning is issued since the operator effectively does nothing.
3446 3) Unreferenced objects: If a namespace object is created, but never
3447 referenced, a warning is issued. This is a warning level 2 since there are
3448 cases where this is ok, such as when a secondary table is loaded that uses
3449 the unreferenced objects. Even so, care is taken to only flag objects that
3450 don't look like they will ever be used. For example, the reserved methods
3451 (starting with an underscore) are usually not referenced because it is
3452 expected that the OS will invoke them.
3454 ----------------------------------------
3455 31 March 2006. Summary of changes for version 20060331:
3457 1) ACPI CA Core Subsystem:
3459 Implemented header file support for the following additional ACPI tables:
3460 ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this support,
3461 all current and known ACPI tables are now defined in the ACPICA headers and
3462 are available for use by device drivers and other software.
3464 Implemented support to allow tables that contain ACPI names with invalid
3465 characters to be loaded. Previously, this would cause the table load to
3466 fail, but since there are several known cases of such tables on existing
3467 machines, this change was made to enable ACPI support for them. Also, this
3468 matches the behavior of the Microsoft ACPI implementation.
3470 Fixed a couple regressions introduced during the memory optimization in the
3471 20060317 release. The namespace node definition required additional
3472 reorganization and an internal datatype that had been changed to 8-bit was
3473 restored to 32-bit. (Valery Podrezov)
3475 Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState
3476 could be passed through to AcpiOsReleaseObject which is unexpected. Such
3477 null pointers are now trapped and ignored, matching the behavior of the
3478 previous implementation before the deployment of AcpiOsReleaseObject.
3479 (Valery Podrezov, Fiodor Suietov)
3481 Fixed a memory mapping leak during the deletion of a SystemMemory operation
3482 region where a cached memory mapping was not deleted. This became a
3483 noticeable problem for operation regions that are defined within frequently
3484 used control methods. (Dana Meyers)
3486 Reorganized the ACPI table header files into two main files: one for the
3487 ACPI tables consumed by the ACPICA core, and another for the miscellaneous
3488 ACPI tables that are consumed by the drivers and other software. The various
3489 FADT definitions were merged into one common section and three different
3490 tables (ACPI 1.0, 1.0+, and 2.0)
3492 Example Code and Data Size: These are the sizes for the OS-independent
3493 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3494 debug version of the code includes the debug output trace mechanism and has
3495 a much larger code and data size.
3498 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
3499 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
3501 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
3502 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
3505 2) iASL Compiler/Disassembler and Tools:
3507 Disassembler: Implemented support to decode and format all non-AML ACPI
3508 tables (tables other than DSDTs and SSDTs.) This includes the new tables
3509 added to the ACPICA headers, therefore all current and known ACPI tables are
3512 Disassembler: The change to allow ACPI names with invalid characters also
3513 enables the disassembly of such tables. Invalid characters within names are
3514 changed to '*' to make the name printable; the iASL compiler will still
3515 generate an error for such names, however, since this is an invalid ACPI
3518 Implemented an option for AcpiXtract (-a) to extract all tables found in the
3519 input file. The default invocation extracts only the DSDTs and SSDTs.
3521 Fixed a couple of gcc generation issues for iASL and AcpiExec and added a
3522 makefile for the AcpiXtract utility.
3524 ----------------------------------------
3525 17 March 2006. Summary of changes for version 20060317:
3527 1) ACPI CA Core Subsystem:
3529 Implemented the use of a cache object for all internal namespace nodes.
3530 Since there are about 1000 static nodes in a typical system, this will
3531 decrease memory use for cache implementations that minimize per-allocation
3532 overhead (such as a slab allocator.)
3534 Removed the reference count mechanism for internal namespace nodes, since it
3535 was deemed unnecessary. This reduces the size of each namespace node by
3536 about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit case,
3537 and 32 bytes for the 64-bit case.
3539 Optimized several internal data structures to reduce object size on 64-bit
3540 platforms by packing data within the 64-bit alignment. This includes the
3541 frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static
3542 instances corresponding to the namespace objects.
3544 Added two new strings for the predefined _OSI method: "Windows 2001.1 SP1"
3547 Split the allocation tracking mechanism out to a separate file, from
3548 utalloc.c to uttrack.c. This mechanism appears to be only useful for
3549 application-level code. Kernels may wish to not include uttrack.c in
3552 Removed all remnants of the obsolete ACPI_REPORT_* macros and the associated
3553 code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING
3556 Code and Data Size: These are the sizes for the acpica.lib produced by the
3557 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI
3558 driver or OSPM code. The debug version of the code includes the debug output
3559 trace mechanism and has a much larger code and data size. Note that these
3560 values will vary depending on the efficiency of the compiler and the
3561 compiler options used during generation.
3564 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
3565 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
3567 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
3568 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
3571 2) iASL Compiler/Disassembler and Tools:
3573 Implemented an ANSI C version of the acpixtract utility. This version will
3574 automatically extract the DSDT and all SSDTs from the input acpidump text
3575 file and dump the binary output to separate files. It can also display a
3576 summary of the input file including the headers for each table found and
3577 will extract any single ACPI table, with any signature. (See
3578 source/tools/acpixtract)
3580 ----------------------------------------
3581 10 March 2006. Summary of changes for version 20060310:
3583 1) ACPI CA Core Subsystem:
3585 Tagged all external interfaces to the subsystem with the new
3586 ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to assist
3587 kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL
3588 macro. The default definition is NULL.
3590 Added the ACPI_THREAD_ID type for the return value from AcpiOsGetThreadId.
3591 This allows the host to define this as necessary to simplify kernel
3592 integration. The default definition is ACPI_NATIVE_UINT.
3594 Fixed two interpreter problems related to error processing, the deletion of
3595 objects, and placing invalid pointers onto the internal operator result
3596 stack. BZ 6028, 6151 (Valery Podrezov)
3598 Increased the reference count threshold where a warning is emitted for large
3599 reference counts in order to eliminate unnecessary warnings on systems with
3600 large namespaces (especially 64-bit.) Increased the value from 0x400 to
3603 Due to universal disagreement as to the meaning of the 'c' in the calloc()
3604 function, the ACPI_MEM_CALLOCATE macro has been renamed to
3605 ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'.
3606 ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and
3609 Code and Data Size: These are the sizes for the acpica.lib produced by the
3610 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI
3611 driver or OSPM code. The debug version of the code includes the debug output
3612 trace mechanism and has a much larger code and data size. Note that these
3613 values will vary depending on the efficiency of the compiler and the
3614 compiler options used during generation.
3617 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
3618 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
3620 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
3621 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
3624 2) iASL Compiler/Disassembler:
3626 Disassembler: implemented support for symbolic resource descriptor
3627 references. If a CreateXxxxField operator references a fixed offset within a
3628 resource descriptor, a name is assigned to the descriptor and the offset is
3629 translated to the appropriate resource tag and pathname. The addition of
3630 this support brings the disassembled code very close to the original ASL
3631 source code and helps eliminate run-time errors when the disassembled code
3632 is modified (and recompiled) in such a way as to invalidate the original
3635 Implemented support for a Descriptor Name as the last parameter to the ASL
3636 Register() macro. This parameter was inadvertently left out of the ACPI
3637 specification, and will be added for ACPI 3.0b.
3639 Fixed a problem where the use of the "_OSI" string (versus the full path
3640 "\_OSI") caused an internal compiler error. ("No back ptr to op")
3642 Fixed a problem with the error message that occurs when an invalid string is
3643 used for a _HID object (such as one with an embedded asterisk: "*PNP010A".)
3644 The correct message is now displayed.
3646 ----------------------------------------
3647 17 February 2006. Summary of changes for version 20060217:
3649 1) ACPI CA Core Subsystem:
3651 Implemented a change to the IndexField support to match the behavior of the
3652 Microsoft AML interpreter. The value written to the Index register is now a
3653 byte offset, no longer an index based upon the width of the Data register.
3654 This should fix IndexField problems seen on some machines where the Data
3655 register is not exactly one byte wide. The ACPI specification will be
3656 clarified on this point.
3658 Fixed a problem where several resource descriptor types could overrun the
3659 internal descriptor buffer due to size miscalculation: VendorShort,
3660 VendorLong, and Interrupt. This was noticed on IA64 machines, but could
3661 affect all platforms.
3663 Fixed a problem where individual resource descriptors were misaligned within
3664 the internal buffer, causing alignment faults on IA64 platforms.
3666 Code and Data Size: These are the sizes for the acpica.lib produced by the
3667 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI
3668 driver or OSPM code. The debug version of the code includes the debug output
3669 trace mechanism and has a much larger code and data size. Note that these
3670 values will vary depending on the efficiency of the compiler and the
3671 compiler options used during generation.
3674 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
3675 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
3677 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
3678 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
3681 2) iASL Compiler/Disassembler:
3683 Implemented support for new reserved names: _WDG and _WED are Microsoft
3684 extensions for Windows Instrumentation Management, _TDL is a new ACPI-
3685 defined method (Throttling Depth Limit.)
3687 Fixed a problem where a zero-length VendorShort or VendorLong resource
3688 descriptor was incorrectly emitted as a descriptor of length one.
3690 ----------------------------------------
3691 10 February 2006. Summary of changes for version 20060210:
3693 1) ACPI CA Core Subsystem:
3695 Removed a couple of extraneous ACPI_ERROR messages that appeared during
3696 normal execution. These became apparent after the conversion from
3699 Fixed a problem where the CreateField operator could hang if the BitIndex or
3700 NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359)
3702 Fixed a problem where a DeRefOf operation on a buffer object incorrectly
3703 failed with an exception. This also fixes a couple of related RefOf and
3704 DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387)
3706 Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead of
3707 AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, BZ
3710 Implemented a memory cleanup at the end of the execution of each iteration
3711 of an AML While() loop, preventing the accumulation of outstanding objects.
3712 (Valery Podrezov, BZ 5427)
3714 Eliminated a chunk of duplicate code in the object resolution code. (Valery
3717 Fixed several warnings during the 64-bit code generation.
3719 The AcpiSrc source code conversion tool now inserts one line of whitespace
3720 after an if() statement that is followed immediately by a comment, improving
3721 readability of the Linux code.
3723 Code and Data Size: The current and previous library sizes for the core
3724 subsystem are shown below. These are the code and data sizes for the
3725 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
3726 values do not include any ACPI driver or OSPM code. The debug version of the
3727 code includes the debug output trace mechanism and has a much larger code
3728 and data size. Note that these values will vary depending on the efficiency
3729 of the compiler and the compiler options used during generation.
3732 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
3733 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
3735 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
3736 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
3739 2) iASL Compiler/Disassembler:
3741 Fixed a problem with the disassembly of a BankField operator with a complex
3742 expression for the BankValue parameter.
3744 ----------------------------------------
3745 27 January 2006. Summary of changes for version 20060127:
3747 1) ACPI CA Core Subsystem:
3749 Implemented support in the Resource Manager to allow unresolved namestring
3750 references within resource package objects for the _PRT method. This support
3751 is in addition to the previously implemented unresolved reference support
3752 within the AML parser. If the interpreter slack mode is enabled, these
3753 unresolved references will be passed through to the caller as a NULL package
3756 Implemented and deployed new macros and functions for error and warning
3757 messages across the subsystem. These macros are simpler and generate less
3758 code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION,
3759 ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older
3760 macros remain defined to allow ACPI drivers time to migrate to the new
3763 Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of the
3764 Acquire/Release Lock OSL interfaces.
3766 Fixed a problem where Alias ASL operators are sometimes not correctly
3767 resolved, in both the interpreter and the iASL compiler.
3769 Fixed several problems with the implementation of the ConcatenateResTemplate
3770 ASL operator. As per the ACPI specification, zero length buffers are now
3771 treated as a single EndTag. One-length buffers always cause a fatal
3772 exception. Non-zero length buffers that do not end with a full 2-byte EndTag
3773 cause a fatal exception.
3775 Fixed a possible structure overwrite in the AcpiGetObjectInfo external
3776 interface. (With assistance from Thomas Renninger)
3778 Code and Data Size: The current and previous library sizes for the core
3779 subsystem are shown below. These are the code and data sizes for the
3780 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
3781 values do not include any ACPI driver or OSPM code. The debug version of the
3782 code includes the debug output trace mechanism and has a much larger code
3783 and data size. Note that these values will vary depending on the efficiency
3784 of the compiler and the compiler options used during generation.
3787 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
3788 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
3790 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
3791 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
3794 2) iASL Compiler/Disassembler:
3796 Fixed an internal error that was generated for any forward references to ASL
3799 ----------------------------------------
3800 13 January 2006. Summary of changes for version 20060113:
3802 1) ACPI CA Core Subsystem:
3804 Added 2006 copyright to all module headers and signons. This affects
3805 virtually every file in the ACPICA core subsystem, iASL compiler, and the
3808 Enhanced the ACPICA error reporting in order to simplify user migration to
3809 the non-debug version of ACPICA. Replaced all instances of the
3810 ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN debug
3811 levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros,
3812 respectively. This preserves all error and warning messages in the non-debug
3813 version of the ACPICA code (this has been referred to as the "debug lite"
3814 option.) Over 200 cases were converted to create a total of over 380
3815 error/warning messages across the ACPICA code. This increases the code and
3816 data size of the default non-debug version of the code somewhat (about 13K),
3817 but all error/warning reporting may be disabled if desired (and code
3818 eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time
3819 configuration option. The size of the debug version of ACPICA remains about
3822 Fixed a memory leak within the AML Debugger "Set" command. One object was
3823 not properly deleted for every successful invocation of the command.
3825 Code and Data Size: The current and previous library sizes for the core
3826 subsystem are shown below. These are the code and data sizes for the
3827 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
3828 values do not include any ACPI driver or OSPM code. The debug version of the
3829 code includes the debug output trace mechanism and has a much larger code
3830 and data size. Note that these values will vary depending on the efficiency
3831 of the compiler and the compiler options used during generation.
3834 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
3835 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
3837 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
3838 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
3841 2) iASL Compiler/Disassembler:
3843 The compiler now officially supports the ACPI 3.0a specification that was
3844 released on December 30, 2005. (Specification is available at www.acpi.info)
3846 ----------------------------------------
3847 16 December 2005. Summary of changes for version 20051216:
3849 1) ACPI CA Core Subsystem:
3851 Implemented optional support to allow unresolved names within ASL Package
3852 objects. A null object is inserted in the package when a named reference
3853 cannot be located in the current namespace. Enabled via the interpreter
3854 slack flag, this should eliminate AE_NOT_FOUND exceptions seen on machines
3855 that contain such code.
3857 Implemented an optimization to the initialization sequence that can improve
3858 boot time. During ACPI device initialization, the _STA method is now run if
3859 and only if the _INI method exists. The _STA method is used to determine if
3860 the device is present; An _INI can only be run if _STA returns present, but
3861 it is a waste of time to run the _STA method if the _INI does not exist.
3862 (Prototype and assistance from Dong Wei)
3864 Implemented use of the C99 uintptr_t for the pointer casting macros if it is
3865 available in the current compiler. Otherwise, the default (void *) cast is
3868 Fixed some possible memory leaks found within the execution path of the
3869 Break, Continue, If, and CreateField operators. (Valery Podrezov)
3871 Fixed a problem introduced in the 20051202 release where an exception is
3872 generated during method execution if a control method attempts to declare
3875 Moved resource descriptor string constants that are used by both the AML
3876 disassembler and AML debugger to the common utilities directory so that
3877 these components are independent.
3879 Implemented support in the AcpiExec utility (-e switch) to globally ignore
3880 exceptions during control method execution (method is not aborted.)
3882 Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix
3885 Code and Data Size: The current and previous library sizes for the core
3886 subsystem are shown below. These are the code and data sizes for the
3887 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
3888 values do not include any ACPI driver or OSPM code. The debug version of the
3889 code includes the debug output trace mechanism and has a much larger code
3890 and data size. Note that these values will vary depending on the efficiency
3891 of the compiler and the compiler options used during generation.
3894 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
3895 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
3897 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
3898 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
3901 2) iASL Compiler/Disassembler:
3903 Fixed a problem where a CPU stack overflow fault could occur if a recursive
3904 method call was made from within a Return statement.
3906 ----------------------------------------
3907 02 December 2005. Summary of changes for version 20051202:
3909 1) ACPI CA Core Subsystem:
3911 Modified the parsing of control methods to no longer create namespace
3912 objects during the first pass of the parse. Objects are now created only
3913 during the execute phase, at the moment the namespace creation operator is
3914 encountered in the AML (Name, OperationRegion, CreateByteField, etc.) This
3915 should eliminate ALREADY_EXISTS exceptions seen on some machines where
3916 reentrant control methods are protected by an AML mutex. The mutex will now
3917 correctly block multiple threads from attempting to create the same object
3920 Increased the number of available Owner Ids for namespace object tracking
3921 from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen on
3922 some machines with a large number of ACPI tables (either static or dynamic).
3924 Fixed a problem with the AcpiExec utility where a fault could occur when the
3925 -b switch (batch mode) is used.
3927 Enhanced the namespace dump routine to output the owner ID for each
3930 Code and Data Size: The current and previous library sizes for the core
3931 subsystem are shown below. These are the code and data sizes for the
3932 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
3933 values do not include any ACPI driver or OSPM code. The debug version of the
3934 code includes the debug output trace mechanism and has a much larger code
3935 and data size. Note that these values will vary depending on the efficiency
3936 of the compiler and the compiler options used during generation.
3939 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
3940 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
3942 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
3943 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
3946 2) iASL Compiler/Disassembler:
3948 Fixed a parse error during compilation of certain Switch/Case constructs. To
3949 simplify the parse, the grammar now allows for multiple Default statements
3950 and this error is now detected and flagged during the analysis phase.
3952 Disassembler: The disassembly now includes the contents of the original
3953 table header within a comment at the start of the file. This includes the
3954 name and version of the original ASL compiler.
3956 ----------------------------------------
3957 17 November 2005. Summary of changes for version 20051117:
3959 1) ACPI CA Core Subsystem:
3961 Fixed a problem in the AML parser where the method thread count could be
3962 decremented below zero if any errors occurred during the method parse phase.
3963 This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some machines.
3964 This also fixed a related regression with the mechanism that detects and
3965 corrects methods that cannot properly handle reentrancy (related to the
3966 deployment of the new OwnerId mechanism.)
3968 Eliminated the pre-parsing of control methods (to detect errors) during
3969 table load. Related to the problem above, this was causing unwind issues if
3970 any errors occurred during the parse, and it seemed to be overkill. A table
3971 load should not be aborted if there are problems with any single control
3972 method, thus rendering this feature rather pointless.
3974 Fixed a problem with the new table-driven resource manager where an internal
3975 buffer overflow could occur for small resource templates.
3977 Implemented a new external interface, AcpiGetVendorResource. This interface
3978 will find and return a vendor-defined resource descriptor within a _CRS or
3979 _PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn Helgaas.
3981 Removed the length limit (200) on string objects as per the upcoming ACPI
3982 3.0A specification. This affects the following areas of the interpreter: 1)
3983 any implicit conversion of a Buffer to a String, 2) a String object result
3984 of the ASL Concatentate operator, 3) the String object result of the ASL
3987 Fixed a problem in the Windows OS interface layer (OSL) where a WAIT_FOREVER
3988 on a semaphore object would incorrectly timeout. This allows the
3989 multithreading features of the AcpiExec utility to work properly under
3992 Updated the Linux makefiles for the iASL compiler and AcpiExec to include
3993 the recently added file named "utresrc.c".
3995 Code and Data Size: The current and previous library sizes for the core
3996 subsystem are shown below. These are the code and data sizes for the
3997 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
3998 values do not include any ACPI driver or OSPM code. The debug version of the
3999 code includes the debug output trace mechanism and has a much larger code
4000 and data size. Note that these values will vary depending on the efficiency
4001 of the compiler and the compiler options used during generation.
4004 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
4005 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
4007 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
4008 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
4011 2) iASL Compiler/Disassembler:
4013 Removed the limit (200) on string objects as per the upcoming ACPI 3.0A
4014 specification. For the iASL compiler, this means that string literals within
4015 the source ASL can be of any length.
4017 Enhanced the listing output to dump the AML code for resource descriptors
4018 immediately after the ASL code for each descriptor, instead of in a block at
4019 the end of the entire resource template.
4021 Enhanced the compiler debug output to dump the entire original parse tree
4022 constructed during the parse phase, before any transforms are applied to the
4023 tree. The transformed tree is dumped also.
4025 ----------------------------------------
4026 02 November 2005. Summary of changes for version 20051102:
4028 1) ACPI CA Core Subsystem:
4030 Modified the subsystem initialization sequence to improve GPE support. The
4031 GPE initialization has been split into two parts in order to defer execution
4032 of the _PRW methods (Power Resources for Wake) until after the hardware is
4033 fully initialized and the SCI handler is installed. This allows the _PRW
4034 methods to access fields protected by the Global Lock. This will fix systems
4035 where a NO_GLOBAL_LOCK exception has been seen during initialization.
4037 Converted the ACPI internal object disassemble and display code within the
4038 AML debugger to fully table-driven operation, reducing code size and
4039 increasing maintainability.
4041 Fixed a regression with the ConcatenateResTemplate() ASL operator introduced
4042 in the 20051021 release.
4044 Implemented support for "local" internal ACPI object types within the
4045 debugger "Object" command and the AcpiWalkNamespace external interfaces.
4046 These local types include RegionFields, BankFields, IndexFields, Alias, and
4049 Moved common AML resource handling code into a new file, "utresrc.c". This
4050 code is shared by both the Resource Manager and the AML Debugger.
4052 Code and Data Size: The current and previous library sizes for the core
4053 subsystem are shown below. These are the code and data sizes for the
4054 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
4055 values do not include any ACPI driver or OSPM code. The debug version of the
4056 code includes the debug output trace mechanism and has a much larger code
4057 and data size. Note that these values will vary depending on the efficiency
4058 of the compiler and the compiler options used during generation.
4061 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
4062 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
4064 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
4065 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
4068 2) iASL Compiler/Disassembler:
4070 Fixed a problem with very large initializer lists (more than 4000 elements)
4071 for both Buffer and Package objects where the parse stack could overflow.
4073 Enhanced the pre-compile source code scan for non-ASCII characters to ignore
4074 characters within comment fields. The scan is now always performed and is no
4075 longer optional, detecting invalid characters within a source file
4076 immediately rather than during the parse phase or later.
4078 Enhanced the ASL grammar definition to force early reductions on all list-
4079 style grammar elements so that the overall parse stack usage is greatly
4080 reduced. This should improve performance and reduce the possibility of parse
4083 Eliminated all reduce/reduce conflicts in the iASL parser generation. Also,
4084 with the addition of a %expected statement, the compiler generates from
4085 source with no warnings.
4087 Fixed a possible segment fault in the disassembler if the input filename
4088 does not contain a "dot" extension (Thomas Renninger).
4090 ----------------------------------------
4091 21 October 2005. Summary of changes for version 20051021:
4093 1) ACPI CA Core Subsystem:
4095 Implemented support for the EM64T and other x86-64 processors. This
4096 essentially entails recognizing that these processors support non-aligned
4097 memory transfers. Previously, all 64-bit processors were assumed to lack
4098 hardware support for non-aligned transfers.
4100 Completed conversion of the Resource Manager to nearly full table-driven
4101 operation. Specifically, the resource conversion code (convert AML to
4102 internal format and the reverse) and the debug code to dump internal
4103 resource descriptors are fully table-driven, reducing code and data size and
4104 improving maintainability.
4106 The OSL interfaces for Acquire and Release Lock now use a 64-bit flag word
4107 on 64-bit processors instead of a fixed 32-bit word. (With assistance from
4108 Alexey Starikovskiy)
4110 Implemented support within the resource conversion code for the Type-
4111 Specific byte within the various ACPI 3.0 *WordSpace macros.
4113 Fixed some issues within the resource conversion code for the type-specific
4114 flags for both Memory and I/O address resource descriptors. For Memory,
4115 implemented support for the MTP and TTP flags. For I/O, split the TRS and
4116 TTP flags into two separate fields.
4118 Code and Data Size: The current and previous library sizes for the core
4119 subsystem are shown below. These are the code and data sizes for the
4120 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
4121 values do not include any ACPI driver or OSPM code. The debug version of the
4122 code includes the debug output trace mechanism and has a much larger code
4123 and data size. Note that these values will vary depending on the efficiency
4124 of the compiler and the compiler options used during generation.
4127 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
4128 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
4130 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
4131 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
4135 2) iASL Compiler/Disassembler:
4137 Relaxed a compiler restriction that disallowed a ResourceIndex byte if the
4138 corresponding ResourceSource string was not also present in a resource
4139 descriptor declaration. This restriction caused problems with existing
4140 AML/ASL code that includes the Index byte without the string. When such AML
4141 was disassembled, it could not be compiled without modification. Further,
4142 the modified code created a resource template with a different size than the
4143 original, breaking code that used fixed offsets into the resource template
4146 Removed a recent feature of the disassembler to ignore a lone ResourceIndex
4147 byte. This byte is now emitted if present so that the exact AML can be
4148 reproduced when the disassembled code is recompiled.
4150 Improved comments and text alignment for the resource descriptor code
4151 emitted by the disassembler.
4153 Implemented disassembler support for the ACPI 3.0 AccessSize field within a
4154 Register() resource descriptor.
4156 ----------------------------------------
4157 30 September 2005. Summary of changes for version 20050930:
4159 1) ACPI CA Core Subsystem:
4161 Completed a major overhaul of the Resource Manager code - specifically,
4162 optimizations in the area of the AML/internal resource conversion code. The
4163 code has been optimized to simplify and eliminate duplicated code, CPU stack
4164 use has been decreased by optimizing function parameters and local
4165 variables, and naming conventions across the manager have been standardized
4166 for clarity and ease of maintenance (this includes function, parameter,
4167 variable, and struct/typedef names.) The update may force changes in some
4168 driver code, depending on how resources are handled by the host OS.
4170 All Resource Manager dispatch and information tables have been moved to a
4171 single location for clarity and ease of maintenance. One new file was
4172 created, named "rsinfo.c".
4174 The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to
4175 guarantee that the argument is not evaluated twice, making them less prone
4176 to macro side-effects. However, since there exists the possibility of
4177 additional stack use if a particular compiler cannot optimize them (such as
4178 in the debug generation case), the original macros are optionally available.
4179 Note that some invocations of the return_VALUE macro may now cause size
4180 mismatch warnings; the return_UINT8 and return_UINT32 macros are provided to
4181 eliminate these. (From Randy Dunlap)
4183 Implemented a new mechanism to enable debug tracing for individual control
4184 methods. A new external interface, AcpiDebugTrace, is provided to enable
4185 this mechanism. The intent is to allow the host OS to easily enable and
4186 disable tracing for problematic control methods. This interface can be
4187 easily exposed to a user or debugger interface if desired. See the file
4188 psxface.c for details.
4190 AcpiUtCallocate will now return a valid pointer if a length of zero is
4191 specified - a length of one is used and a warning is issued. This matches
4192 the behavior of AcpiUtAllocate.
4194 Code and Data Size: The current and previous library sizes for the core
4195 subsystem are shown below. These are the code and data sizes for the
4196 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
4197 values do not include any ACPI driver or OSPM code. The debug version of the
4198 code includes the debug output trace mechanism and has a much larger code
4199 and data size. Note that these values will vary depending on the efficiency
4200 of the compiler and the compiler options used during generation.
4203 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
4204 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
4206 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
4207 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
4210 2) iASL Compiler/Disassembler:
4212 A remark is issued if the effective compile-time length of a package or
4213 buffer is zero. Previously, this was a warning.
4215 ----------------------------------------
4216 16 September 2005. Summary of changes for version 20050916:
4218 1) ACPI CA Core Subsystem:
4220 Fixed a problem within the Resource Manager where support for the Generic
4221 Register descriptor was not fully implemented. This descriptor is now fully
4222 recognized, parsed, disassembled, and displayed.
4224 Completely restructured the Resource Manager code to utilize table-driven
4225 dispatch and lookup, eliminating many of the large switch() statements. This
4226 reduces overall subsystem code size and code complexity. Affects the
4227 resource parsing and construction, disassembly, and debug dump output.
4229 Cleaned up and restructured the debug dump output for all resource
4230 descriptors. Improved readability of the output and reduced code size.
4232 Fixed a problem where changes to internal data structures caused the
4233 optional ACPI_MUTEX_DEBUG code to fail compilation if specified.
4235 Code and Data Size: The current and previous library sizes for the core
4236 subsystem are shown below. These are the code and data sizes for the
4237 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
4238 values do not include any ACPI driver or OSPM code. The debug version of the
4239 code includes the debug output trace mechanism and has a much larger code
4240 and data size. Note that these values will vary depending on the efficiency
4241 of the compiler and the compiler options used during generation.
4244 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
4245 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
4247 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
4248 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
4251 2) iASL Compiler/Disassembler:
4253 Updated the disassembler to automatically insert an EndDependentFn() macro
4254 into the ASL stream if this macro is missing in the original AML code,
4255 simplifying compilation of the resulting ASL module.
4257 Fixed a problem in the disassembler where a disassembled ResourceSource
4258 string (within a large resource descriptor) was not surrounded by quotes and
4259 not followed by a comma, causing errors when the resulting ASL module was
4260 compiled. Also, escape sequences within a ResourceSource string are now
4261 handled correctly (especially "\\")
4263 ----------------------------------------
4264 02 September 2005. Summary of changes for version 20050902:
4266 1) ACPI CA Core Subsystem:
4268 Fixed a problem with the internal Owner ID allocation and deallocation
4269 mechanisms for control method execution and recursive method invocation.
4270 This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId"
4271 messages seen on some systems. Recursive method invocation depth is
4272 currently limited to 255. (Alexey Starikovskiy)
4274 Completely eliminated all vestiges of support for the "module-level
4275 executable code" until this support is fully implemented and debugged. This
4276 should eliminate the NO_RETURN_VALUE exceptions seen during table load on
4277 some systems that invoke this support.
4279 Fixed a problem within the resource manager code where the transaction flags
4280 for a 64-bit address descriptor were handled incorrectly in the type-
4283 Consolidated duplicate code within the address descriptor resource manager
4284 code, reducing overall subsystem code size.
4286 Fixed a fault when using the AML debugger "disassemble" command to
4287 disassemble individual control methods.
4289 Removed references to the "release_current" directory within the Unix
4292 Code and Data Size: The current and previous core subsystem library sizes
4293 are shown below. These are the code and data sizes for the acpica.lib
4294 produced by the Microsoft Visual C++ 6.0 compiler. These values do not
4295 include any ACPI driver or OSPM code. The debug version of the code includes
4296 the debug output trace mechanism and has a much larger code and data size.
4297 Note that these values will vary depending on the efficiency of the compiler
4298 and the compiler options used during generation.
4301 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
4302 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
4304 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
4305 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
4308 2) iASL Compiler/Disassembler:
4310 Implemented an error check for illegal duplicate values in the interrupt and
4311 dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and
4314 Implemented error checking for the Irq() and IrqNoFlags() macros to detect
4315 too many values in the interrupt list (16 max) and invalid values in the
4318 The maximum length string literal within an ASL file is now restricted to
4319 200 characters as per the ACPI specification.
4321 Fixed a fault when using the -ln option (generate namespace listing).
4323 Implemented an error check to determine if a DescriptorName within a
4324 resource descriptor has already been used within the current scope.
4326 ----------------------------------------
4327 15 August 2005. Summary of changes for version 20050815:
4329 1) ACPI CA Core Subsystem:
4331 Implemented a full bytewise compare to determine if a table load request is
4332 attempting to load a duplicate table. The compare is performed if the table
4333 signatures and table lengths match. This will allow different tables with
4334 the same OEM Table ID and revision to be loaded - probably against the ACPI
4335 specification, but discovered in the field nonetheless.
4337 Added the changes.txt logfile to each of the zipped release packages.
4339 Code and Data Size: Current and previous core subsystem library sizes are
4340 shown below. These are the code and data sizes for the acpica.lib produced
4341 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
4342 any ACPI driver or OSPM code. The debug version of the code includes the
4343 debug output trace mechanism and has a much larger code and data size. Note
4344 that these values will vary depending on the efficiency of the compiler and
4345 the compiler options used during generation.
4348 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
4349 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
4351 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
4352 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
4355 2) iASL Compiler/Disassembler:
4357 Fixed a problem where incorrect AML code could be generated for Package
4358 objects if optimization is disabled (via the -oa switch).
4360 Fixed a problem with where incorrect AML code is generated for variable-
4361 length packages when the package length is not specified and the number of
4362 initializer values is greater than 255.
4365 ----------------------------------------
4366 29 July 2005. Summary of changes for version 20050729:
4368 1) ACPI CA Core Subsystem:
4370 Implemented support to ignore an attempt to install/load a particular ACPI
4371 table more than once. Apparently there exists BIOS code that repeatedly
4372 attempts to load the same SSDT upon certain events. With assistance from
4373 Venkatesh Pallipadi.
4375 Restructured the main interface to the AML parser in order to correctly
4376 handle all exceptional conditions. This will prevent leakage of the OwnerId
4377 resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on some
4378 machines. With assistance from Alexey Starikovskiy.
4380 Support for "module level code" has been disabled in this version due to a
4381 number of issues that have appeared on various machines. The support can be
4382 enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem
4383 compilation. When the issues are fully resolved, the code will be enabled by
4386 Modified the internal functions for debug print support to define the
4387 FunctionName parameter as a (const char *) for compatibility with compiler
4388 built-in macros such as __FUNCTION__, etc.
4390 Linted the entire ACPICA source tree for both 32-bit and 64-bit.
4392 Implemented support to display an object count summary for the AML Debugger
4393 commands Object and Methods.
4395 Code and Data Size: Current and previous core subsystem library sizes are
4396 shown below. These are the code and data sizes for the acpica.lib produced
4397 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
4398 any ACPI driver or OSPM code. The debug version of the code includes the
4399 debug output trace mechanism and has a much larger code and data size. Note
4400 that these values will vary depending on the efficiency of the compiler and
4401 the compiler options used during generation.
4404 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
4405 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
4407 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
4408 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
4411 2) iASL Compiler/Disassembler:
4413 Fixed a regression that appeared in the 20050708 version of the compiler
4414 where an error message was inadvertently emitted for invocations of the _OSI
4415 reserved control method.
4417 ----------------------------------------
4418 08 July 2005. Summary of changes for version 20050708:
4420 1) ACPI CA Core Subsystem:
4422 The use of the CPU stack in the debug version of the subsystem has been
4423 considerably reduced. Previously, a debug structure was declared in every
4424 function that used the debug macros. This structure has been removed in
4425 favor of declaring the individual elements as parameters to the debug
4426 functions. This reduces the cumulative stack use during nested execution of
4427 ACPI function calls at the cost of a small increase in the code size of the
4428 debug version of the subsystem. With assistance from Alexey Starikovskiy and
4431 Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent
4432 headers to define a macro that will return the current function name at
4433 runtime (such as __FUNCTION__ or _func_, etc.) The function name is used by
4434 the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the
4435 compiler-dependent header, the function name is saved on the CPU stack (one
4436 pointer per function.) This mechanism is used because apparently there
4437 exists no standard ANSI-C defined macro that that returns the function name.
4439 Redesigned and reimplemented the "Owner ID" mechanism used to track
4440 namespace objects created/deleted by ACPI tables and control method
4441 execution. A bitmap is now used to allocate and free the IDs, thus solving
4442 the wraparound problem present in the previous implementation. The size of
4443 the namespace node descriptor was reduced by 2 bytes as a result (Alexey
4446 Removed the UINT32_BIT and UINT16_BIT types that were used for the bitfield
4447 flag definitions within the headers for the predefined ACPI tables. These
4448 have been replaced by UINT8_BIT in order to increase the code portability of
4449 the subsystem. If the use of UINT8 remains a problem, we may be forced to
4450 eliminate bitfields entirely because of a lack of portability.
4452 Enhanced the performance of the AcpiUtUpdateObjectReference procedure. This
4453 is a frequently used function and this improvement increases the performance
4454 of the entire subsystem (Alexey Starikovskiy).
4456 Fixed several possible memory leaks and the inverse - premature object
4457 deletion (Alexey Starikovskiy).
4459 Code and Data Size: Current and previous core subsystem library sizes are
4460 shown below. These are the code and data sizes for the acpica.lib produced
4461 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
4462 any ACPI driver or OSPM code. The debug version of the code includes the
4463 debug output trace mechanism and has a much larger code and data size. Note
4464 that these values will vary depending on the efficiency of the compiler and
4465 the compiler options used during generation.
4468 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
4469 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
4471 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
4472 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
4474 ----------------------------------------
4475 24 June 2005. Summary of changes for version 20050624:
4477 1) ACPI CA Core Subsystem:
4479 Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for
4480 the host-defined cache object. This allows the OSL implementation to define
4481 and type this object in any manner desired, simplifying the OSL
4482 implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for
4483 Linux, and should be defined in the OS-specific header file for other
4484 operating systems as required.
4486 Changed the interface to AcpiOsAcquireObject to directly return the
4487 requested object as the function return (instead of ACPI_STATUS.) This
4488 change was made for performance reasons, since this is the purpose of the
4489 interface in the first place. AcpiOsAcquireObject is now similar to the
4490 AcpiOsAllocate interface.
4492 Implemented a new AML debugger command named Businfo. This command displays
4493 information about all devices that have an associate _PRT object. The _ADR,
4494 _HID, _UID, and _CID are displayed for these devices.
4496 Modified the initialization sequence in AcpiInitializeSubsystem to call the
4497 OSL interface AcpiOslInitialize first, before any local initialization. This
4498 change was required because the global initialization now calls OSL
4501 Enhanced the Dump command to display the entire contents of Package objects
4502 (including all sub-objects and their values.)
4504 Restructured the code base to split some files because of size and/or
4505 because the code logically belonged in a separate file. New files are listed
4506 below. All makefiles and project files included in the ACPI CA release have
4508 utilities/utcache.c /* Local cache interfaces */
4509 utilities/utmutex.c /* Local mutex support */
4510 utilities/utstate.c /* State object support */
4511 interpreter/parser/psloop.c /* Main AML parse loop */
4513 Code and Data Size: Current and previous core subsystem library sizes are
4514 shown below. These are the code and data sizes for the acpica.lib produced
4515 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
4516 any ACPI driver or OSPM code. The debug version of the code includes the
4517 debug output trace mechanism and has a much larger code and data size. Note
4518 that these values will vary depending on the efficiency of the compiler and
4519 the compiler options used during generation.
4522 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
4523 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
4525 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
4526 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
4529 2) iASL Compiler/Disassembler:
4531 Fixed a regression introduced in version 20050513 where the use of a Package
4532 object within a Case() statement caused a compile time exception. The
4533 original behavior has been restored (a Match() operator is emitted.)
4535 ----------------------------------------
4536 17 June 2005. Summary of changes for version 20050617:
4538 1) ACPI CA Core Subsystem:
4540 Moved the object cache operations into the OS interface layer (OSL) to allow
4541 the host OS to handle these operations if desired (for example, the Linux
4542 OSL will invoke the slab allocator). This support is optional; the compile
4543 time define ACPI_USE_LOCAL_CACHE may be used to utilize the original cache
4544 code in the ACPI CA core. The new OSL interfaces are shown below. See
4545 utalloc.c for an example implementation, and acpiosxf.h for the exact
4546 interface definitions. With assistance from Alexey Starikovskiy.
4553 Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to return
4554 and restore a flags parameter. This fits better with many OS lock models.
4555 Note: the current execution state (interrupt handler or not) is no longer
4556 passed to these interfaces. If necessary, the OSL must determine this state
4557 by itself, a simple and fast operation. With assistance from Alexey
4560 Fixed a problem in the ACPI table handling where a valid XSDT was assumed
4561 present if the revision of the RSDP was 2 or greater. According to the ACPI
4562 specification, the XSDT is optional in all cases, and the table manager
4563 therefore now checks for both an RSDP >=2 and a valid XSDT pointer.
4564 Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs contain
4567 Fixed an interpreter problem with the Mid() operator in the case of an input
4568 string where the resulting output string is of zero length. It now correctly
4569 returns a valid, null terminated string object instead of a string object
4570 with a null pointer.
4572 Fixed a problem with the control method argument handling to allow a store
4573 to an Arg object that already contains an object of type Device. The Device
4574 object is now correctly overwritten. Previously, an error was returned.
4577 Enhanced the debugger Find command to emit object values in addition to the
4578 found object pathnames. The output format is the same as the dump namespace
4581 Enhanced the debugger Set command. It now has the ability to set the value
4582 of any Named integer object in the namespace (Previously, only method locals
4583 and args could be set.)
4585 Code and Data Size: Current and previous core subsystem library sizes are
4586 shown below. These are the code and data sizes for the acpica.lib produced
4587 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
4588 any ACPI driver or OSPM code. The debug version of the code includes the
4589 debug output trace mechanism and has a much larger code and data size. Note
4590 that these values will vary depending on the efficiency of the compiler and
4591 the compiler options used during generation.
4594 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
4595 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
4597 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
4598 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
4601 2) iASL Compiler/Disassembler:
4603 Fixed a regression in the disassembler where if/else/while constructs were
4604 output incorrectly. This problem was introduced in the previous release
4605 (20050526). This problem also affected the single-step disassembly in the
4608 Fixed a problem where compiling the reserved _OSI method would randomly (but
4609 rarely) produce compile errors.
4611 Enhanced the disassembler to emit compilable code in the face of incorrect
4612 AML resource descriptors. If the optional ResourceSourceIndex is present,
4613 but the ResourceSource is not, do not emit the ResourceSourceIndex in the
4614 disassembly. Otherwise, the resulting code cannot be compiled without
4617 ----------------------------------------
4618 26 May 2005. Summary of changes for version 20050526:
4620 1) ACPI CA Core Subsystem:
4622 Implemented support to execute Type 1 and Type 2 AML opcodes appearing at
4623 the module level (not within a control method.) These opcodes are executed
4624 exactly once at the time the table is loaded. This type of code was legal up
4625 until the release of ACPI 2.0B (2002) and is now supported within ACPI CA in
4626 order to provide backwards compatibility with earlier BIOS implementations.
4627 This eliminates the "Encountered executable code at module level" warning
4628 that was previously generated upon detection of such code.
4630 Fixed a problem in the interpreter where an AE_NOT_FOUND exception could
4631 inadvertently be generated during the lookup of namespace objects in the
4632 second pass parse of ACPI tables and control methods. It appears that this
4633 problem could occur during the resolution of forward references to namespace
4636 Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function,
4637 corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This
4638 allows the deadlock detection debug code to be compiled out in the normal
4639 case, improving mutex performance (and overall subsystem performance)
4642 Implemented a handful of miscellaneous fixes for possible memory leaks on
4643 error conditions and error handling control paths. These fixes were
4644 suggested by FreeBSD and the Coverity Prevent source code analysis tool.
4646 Added a check for a null RSDT pointer in AcpiGetFirmwareTable (tbxfroot.c)
4647 to prevent a fault in this error case.
4649 Code and Data Size: Current and previous core subsystem library sizes are
4650 shown below. These are the code and data sizes for the acpica.lib produced
4651 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
4652 any ACPI driver or OSPM code. The debug version of the code includes the
4653 debug output trace mechanism and has a much larger code and data size. Note
4654 that these values will vary depending on the efficiency of the compiler and
4655 the compiler options used during generation.
4658 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
4659 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
4661 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
4662 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
4665 2) iASL Compiler/Disassembler:
4667 Implemented support to allow Type 1 and Type 2 ASL operators to appear at
4668 the module level (not within a control method.) These operators will be
4669 executed once at the time the table is loaded. This type of code was legal
4670 up until the release of ACPI 2.0B (2002) and is now supported by the iASL
4671 compiler in order to provide backwards compatibility with earlier BIOS ASL
4674 The ACPI integer width (specified via the table revision ID or the -r
4675 override, 32 or 64 bits) is now used internally during compile-time constant
4676 folding to ensure that constants are truncated to 32 bits if necessary.
4677 Previously, the revision ID value was only emitted in the AML table header.
4679 An error message is now generated for the Mutex and Method operators if the
4680 SyncLevel parameter is outside the legal range of 0 through 15.
4682 Fixed a problem with the Method operator ParameterTypes list handling (ACPI
4683 3.0). Previously, more than 2 types or 2 arguments generated a syntax error.
4684 The actual underlying implementation of method argument typechecking is
4685 still under development, however.
4687 ----------------------------------------
4688 13 May 2005. Summary of changes for version 20050513:
4690 1) ACPI CA Core Subsystem:
4692 Implemented support for PCI Express root bridges -- added support for device
4693 PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup.
4695 The interpreter now automatically truncates incoming 64-bit constants to 32
4696 bits if currently executing out of a 32-bit ACPI table (Revision < 2). This
4697 also affects the iASL compiler constant folding. (Note: as per below, the
4698 iASL compiler no longer allows 64-bit constants within 32-bit tables.)
4700 Fixed a problem where string and buffer objects with "static" pointers
4701 (pointers to initialization data within an ACPI table) were not handled
4702 consistently. The internal object copy operation now always copies the data
4703 to a newly allocated buffer, regardless of whether the source object is
4706 Fixed a problem with the FromBCD operator where an implicit result
4707 conversion was improperly performed while storing the result to the target
4708 operand. Since this is an "explicit conversion" operator, the implicit
4709 conversion should never be performed on the output.
4711 Fixed a problem with the CopyObject operator where a copy to an existing
4712 named object did not always completely overwrite the existing object stored
4713 at name. Specifically, a buffer-to-buffer copy did not delete the existing
4716 Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces and
4717 structs for consistency.
4719 Code and Data Size: Current and previous core subsystem library sizes are
4720 shown below. These are the code and data sizes for the acpica.lib produced
4721 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
4722 any ACPI driver or OSPM code. The debug version of the code includes the
4723 debug output trace mechanism and has a much larger code and data size. Note
4724 that these values will vary depending on the efficiency of the compiler and
4725 the compiler options used during generation.
4728 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
4729 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
4730 Current Release: (Same sizes)
4731 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
4732 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
4735 2) iASL Compiler/Disassembler:
4737 The compiler now emits a warning if an attempt is made to generate a 64-bit
4738 integer constant from within a 32-bit ACPI table (Revision < 2). The integer
4739 is truncated to 32 bits.
4741 Fixed a problem with large package objects: if the static length of the
4742 package is greater than 255, the "variable length package" opcode is
4743 emitted. Previously, this caused an error. This requires an update to the
4744 ACPI spec, since it currently (incorrectly) states that packages larger than
4745 255 elements are not allowed.
4747 The disassembler now correctly handles variable length packages and packages
4748 larger than 255 elements.
4750 ----------------------------------------
4751 08 April 2005. Summary of changes for version 20050408:
4753 1) ACPI CA Core Subsystem:
4755 Fixed three cases in the interpreter where an "index" argument to an ASL
4756 function was still (internally) 32 bits instead of the required 64 bits.
4757 This was the Index argument to the Index, Mid, and Match operators.
4759 The "strupr" function is now permanently local (AcpiUtStrupr), since this is
4760 not a POSIX-defined function and not present in most kernel-level C
4761 libraries. All references to the C library strupr function have been removed
4764 Completed the deployment of static functions/prototypes. All prototypes with
4765 the static attribute have been moved from the headers to the owning C file.
4767 Implemented an extract option (-e) for the AcpiBin utility (AML binary
4768 utility). This option allows the utility to extract individual ACPI tables
4769 from the output of AcpiDmp. It provides the same functionality of the
4770 acpixtract.pl perl script without the worry of setting the correct perl
4771 options. AcpiBin runs on Windows and has not yet been generated/validated in
4772 the Linux/Unix environment (but should be soon).
4774 Updated and fixed the table dump option for AcpiBin (-d). This option
4775 converts a single ACPI table to a hex/ascii file, similar to the output of
4778 Code and Data Size: Current and previous core subsystem library sizes are
4779 shown below. These are the code and data sizes for the acpica.lib produced
4780 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
4781 any ACPI driver or OSPM code. The debug version of the code includes the
4782 debug output trace mechanism and has a much larger code and data size. Note
4783 that these values will vary depending on the efficiency of the compiler and
4784 the compiler options used during generation.
4787 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
4788 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
4790 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
4791 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
4794 2) iASL Compiler/Disassembler:
4796 Disassembler fix: Added a check to ensure that the table length found in the
4797 ACPI table header within the input file is not longer than the actual input
4798 file size. This indicates some kind of file or table corruption.
4800 ----------------------------------------
4801 29 March 2005. Summary of changes for version 20050329:
4803 1) ACPI CA Core Subsystem:
4805 An error is now generated if an attempt is made to create a Buffer Field of
4806 length zero (A CreateField with a length operand of zero.)
4808 The interpreter now issues a warning whenever executable code at the module
4809 level is detected during ACPI table load. This will give some idea of the
4810 prevalence of this type of code.
4812 Implemented support for references to named objects (other than control
4813 methods) within package objects.
4815 Enhanced package object output for the debug object. Package objects are now
4816 completely dumped, showing all elements.
4818 Enhanced miscellaneous object output for the debug object. Any object can
4819 now be written to the debug object (for example, a device object can be
4820 written, and the type of the object will be displayed.)
4822 The "static" qualifier has been added to all local functions across both the
4823 core subsystem and the iASL compiler.
4825 The number of "long" lines (> 80 chars) within the source has been
4826 significantly reduced, by about 1/3.
4828 Cleaned up all header files to ensure that all CA/iASL functions are
4829 prototyped (even static functions) and the formatting is consistent.
4831 Two new header files have been added, acopcode.h and acnames.h.
4833 Removed several obsolete functions that were no longer used.
4835 Code and Data Size: Current and previous core subsystem library sizes are
4836 shown below. These are the code and data sizes for the acpica.lib produced
4837 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
4838 any ACPI driver or OSPM code. The debug version of the code includes the
4839 debug output trace mechanism and has a much larger code and data size. Note
4840 that these values will vary depending on the efficiency of the compiler and
4841 the compiler options used during generation.
4844 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
4845 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
4847 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
4848 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
4852 2) iASL Compiler/Disassembler:
4854 Fixed a problem with the resource descriptor generation/support. For the
4855 ResourceSourceIndex and the ResourceSource fields, both must be present, or
4856 both must be not present - can't have one without the other.
4858 The compiler now returns non-zero from the main procedure if any errors have
4859 occurred during the compilation.
4862 ----------------------------------------
4863 09 March 2005. Summary of changes for version 20050309:
4865 1) ACPI CA Core Subsystem:
4867 The string-to-buffer implicit conversion code has been modified again after
4868 a change to the ACPI specification. In order to match the behavior of the
4869 other major ACPI implementation, the target buffer is no longer truncated if
4870 the source string is smaller than an existing target buffer. This change
4871 requires an update to the ACPI spec, and should eliminate the recent
4872 AE_AML_BUFFER_LIMIT issues.
4874 The "implicit return" support was rewritten to a new algorithm that solves
4875 the general case. Rather than attempt to determine when a method is about to
4876 exit, the result of every ASL operator is saved momentarily until the very
4877 next ASL operator is executed. Therefore, no matter how the method exits,
4878 there will always be a saved implicit return value. This feature is only
4879 enabled with the AcpiGbl_EnableInterpreterSlack flag, and should eliminate
4880 AE_AML_NO_RETURN_VALUE errors when enabled.
4882 Implemented implicit conversion support for the predicate (operand) of the
4883 If, Else, and While operators. String and Buffer arguments are automatically
4884 converted to Integers.
4886 Changed the string-to-integer conversion behavior to match the new ACPI
4887 errata: "If no integer object exists, a new integer is created. The ASCII
4888 string is interpreted as a hexadecimal constant. Each string character is
4889 interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting
4890 with the first character as the most significant digit, and ending with the
4891 first non-hexadecimal character or end-of-string." This means that the first
4892 non-hex character terminates the conversion and this is the code that was
4895 Fixed a problem where the ObjectType operator would fail (fault) when used
4896 on an Index of a Package which pointed to a null package element. The
4897 operator now properly returns zero (Uninitialized) in this case.
4899 Fixed a problem where the While operator used excessive memory by not
4900 properly popping the result stack during execution. There was no memory leak
4901 after execution, however. (Code provided by Valery Podrezov.)
4903 Fixed a problem where references to control methods within Package objects
4904 caused the method to be invoked, instead of producing a reference object
4905 pointing to the method.
4907 Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) to
4908 improve performance and reduce code size. (Code provided by Alexey
4911 Code and Data Size: Current and previous core subsystem library sizes are
4912 shown below. These are the code and data sizes for the acpica.lib produced
4913 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
4914 any ACPI driver or OSPM code. The debug version of the code includes the
4915 debug output trace mechanism and has a much larger code and data size. Note
4916 that these values will vary depending on the efficiency of the compiler and
4917 the compiler options used during generation.
4920 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
4921 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
4923 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
4924 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
4927 2) iASL Compiler/Disassembler:
4929 Fixed a problem with the Return operator with no arguments. Since the AML
4930 grammar for the byte encoding requires an operand for the Return opcode, the
4931 compiler now emits a Return(Zero) for this case. An ACPI specification
4932 update has been written for this case.
4934 For tables other than the DSDT, namepath optimization is automatically
4935 disabled. This is because SSDTs can be loaded anywhere in the namespace, the
4936 compiler has no knowledge of where, and thus cannot optimize namepaths.
4938 Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was
4939 inadvertently omitted from the ACPI specification, and will require an
4942 The source file scan for ASCII characters is now optional (-a). This change
4943 was made because some vendors place non-ascii characters within comments.
4944 However, the scan is simply a brute-force byte compare to ensure all
4945 characters in the file are in the range 0x00 to 0x7F.
4947 Fixed a problem with the CondRefOf operator where the compiler was
4948 inappropriately checking for the existence of the target. Since the point of
4949 the operator is to check for the existence of the target at run-time, the
4950 compiler no longer checks for the target existence.
4952 Fixed a problem where errors generated from the internal AML interpreter
4953 during constant folding were not handled properly, causing a fault.
4955 Fixed a problem with overly aggressive range checking for the Stall
4956 operator. The valid range (max 255) is now only checked if the operand is of
4957 type Integer. All other operand types cannot be statically checked.
4959 Fixed a problem where control method references within the RefOf, DeRefOf,
4960 and ObjectType operators were not treated properly. They are now treated as
4961 actual references, not method invocations.
4963 Fixed and enhanced the "list namespace" option (-ln). This option was broken
4964 a number of releases ago.
4966 Improved error handling for the Field, IndexField, and BankField operators.
4967 The compiler now cleanly reports and recovers from errors in the field
4968 component (FieldUnit) list.
4970 Fixed a disassembler problem where the optional ResourceDescriptor fields
4971 TRS and TTP were not always handled correctly.
4973 Disassembler - Comments in output now use "//" instead of "/*"
4975 ----------------------------------------
4976 28 February 2005. Summary of changes for version 20050228:
4978 1) ACPI CA Core Subsystem:
4980 Fixed a problem where the result of an Index() operator (an object
4981 reference) must increment the reference count on the target object for the
4982 life of the object reference.
4984 Implemented AML Interpreter and Debugger support for the new ACPI 3.0
4985 Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and WordSpace
4986 resource descriptors.
4988 Implemented support in the _OSI method for the ACPI 3.0 "Extended Address
4989 Space Descriptor" string, indicating interpreter support for the descriptors
4992 Implemented header support for the new ACPI 3.0 FADT flag bits.
4994 Implemented header support for the new ACPI 3.0 PCI Express bits for the PM1
4995 status/enable registers.
4997 Updated header support for the MADT processor local Apic struct and MADT
4998 platform interrupt source struct for new ACPI 3.0 fields.
5000 Implemented header support for the SRAT and SLIT ACPI tables.
5002 Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" flag
5005 Code and Data Size: Current and previous core subsystem library sizes are
5006 shown below. These are the code and data sizes for the acpica.lib produced
5007 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5008 any ACPI driver or OSPM code. The debug version of the code includes the
5009 debug output trace mechanism and has a much larger code and data size. Note
5010 that these values will vary depending on the efficiency of the compiler and
5011 the compiler options used during generation.
5014 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
5015 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
5017 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
5018 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
5021 2) iASL Compiler/Disassembler:
5023 Fixed a problem with the internal 64-bit String-to-integer conversion with
5024 strings less than two characters long.
5026 Fixed a problem with constant folding where the result of the Index()
5027 operator can not be considered a constant. This means that Index() cannot be
5028 a type3 opcode and this will require an update to the ACPI specification.
5030 Disassembler: Implemented support for the TTP, MTP, and TRS resource
5031 descriptor fields. These fields were inadvertently ignored and not output in
5032 the disassembly of the resource descriptor.
5035 ----------------------------------------
5036 11 February 2005. Summary of changes for version 20050211:
5038 1) ACPI CA Core Subsystem:
5040 Implemented ACPI 3.0 support for implicit conversion within the Match()
5041 operator. MatchObjects can now be of type integer, buffer, or string instead
5042 of just type integer. Package elements are implicitly converted to the type
5043 of the MatchObject. This change aligns the behavior of Match() with the
5044 behavior of the other logical operators (LLess(), etc.) It also requires an
5045 errata change to the ACPI specification as this support was intended for
5046 ACPI 3.0, but was inadvertently omitted.
5048 Fixed a problem with the internal implicit "to buffer" conversion. Strings
5049 that are converted to buffers will cause buffer truncation if the string is
5050 smaller than the target buffer. Integers that are converted to buffers will
5051 not cause buffer truncation, only zero extension (both as per the ACPI
5052 spec.) The problem was introduced when code was added to truncate the
5053 buffer, but this should not be performed in all cases, only the string case.
5055 Fixed a problem with the Buffer and Package operators where the interpreter
5056 would get confused if two such operators were used as operands to an ASL
5057 operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result
5058 stack was not being popped after the execution of these operators, resulting
5059 in an AE_NO_RETURN_VALUE exception.
5061 Fixed a problem with constructs of the form Store(Index(...),...). The
5062 reference object returned from Index was inadvertently resolved to an actual
5063 value. This problem was introduced in version 20050114 when the behavior of
5064 Store() was modified to restrict the object types that can be used as the
5065 source operand (to match the ACPI specification.)
5067 Reduced excessive stack use within the AcpiGetObjectInfo procedure.
5069 Added a fix to aclinux.h to allow generation of AcpiExec on Linux.
5071 Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct.
5073 Code and Data Size: Current and previous core subsystem library sizes are
5074 shown below. These are the code and data sizes for the acpica.lib produced
5075 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5076 any ACPI driver or OSPM code. The debug version of the code includes the
5077 debug output trace mechanism and has a much larger code and data size. Note
5078 that these values will vary depending on the efficiency of the compiler and
5079 the compiler options used during generation.
5082 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
5083 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
5085 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
5086 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
5089 2) iASL Compiler/Disassembler:
5091 Fixed a code generation problem in the constant folding optimization code
5092 where incorrect code was generated if a constant was reduced to a buffer
5093 object (i.e., a reduced type 5 opcode.)
5095 Fixed a typechecking problem for the ToBuffer operator. Caused by an
5096 incorrect return type in the internal opcode information table.
5098 ----------------------------------------
5099 25 January 2005. Summary of changes for version 20050125:
5101 1) ACPI CA Core Subsystem:
5103 Fixed a recently introduced problem with the Global Lock where the
5104 underlying semaphore was not created. This problem was introduced in
5105 version 20050114, and caused an AE_AML_NO_OPERAND exception during an
5106 Acquire() operation on _GL.
5108 The local object cache is now optional, and is disabled by default. Both
5109 AcpiExec and the iASL compiler enable the cache because they run in user
5110 mode and this enhances their performance. #define ACPI_ENABLE_OBJECT_CACHE
5111 to enable the local cache.
5113 Fixed an issue in the internal function AcpiUtEvaluateObject concerning the
5114 optional "implicit return" support where an error was returned if no return
5115 object was expected, but one was implicitly returned. AE_OK is now returned
5116 in this case and the implicitly returned object is deleted.
5117 AcpiUtEvaluateObject is only occasionally used, and only to execute reserved
5118 methods such as _STA and _INI where the return type is known up front.
5120 Fixed a few issues with the internal convert-to-integer code. It now returns
5121 an error if an attempt is made to convert a null string, a string of only
5122 blanks/tabs, or a zero-length buffer. This affects both implicit conversion
5123 and explicit conversion via the ToInteger() operator.
5125 The internal debug code in AcpiUtAcquireMutex has been commented out. It is
5126 not needed for normal operation and should increase the performance of the
5127 entire subsystem. The code remains in case it is needed for debug purposes
5130 The AcpiExec source and makefile are included in the Unix/Linux package for
5133 Code and Data Size: Current and previous core subsystem library sizes are
5134 shown below. These are the code and data sizes for the acpica.lib produced
5135 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5136 any ACPI driver or OSPM code. The debug version of the code includes the
5137 debug output trace mechanism and has a much larger code and data size. Note
5138 that these values will vary depending on the efficiency of the compiler and
5139 the compiler options used during generation.
5142 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
5143 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
5145 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
5146 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
5148 2) iASL Compiler/Disassembler:
5150 Switch/Case support: A warning is now issued if the type of the Switch value
5151 cannot be determined at compile time. For example, Switch(Arg0) will
5152 generate the warning, and the type is assumed to be an integer. As per the
5153 ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate the
5156 Switch/Case support: Implemented support for buffer and string objects as
5157 the switch value. This is an ACPI 3.0 feature, now that LEqual supports
5158 buffers and strings.
5160 Switch/Case support: The emitted code for the LEqual() comparisons now uses
5161 the switch value as the first operand, not the second. The case value is now
5162 the second operand, and this allows the case value to be implicitly
5163 converted to the type of the switch value, not the other way around.
5165 Switch/Case support: Temporary variables are now emitted immediately within
5166 the control method, not at the global level. This means that there are now
5167 36 temps available per-method, not 36 temps per-module as was the case with
5168 the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.)
5170 ----------------------------------------
5171 14 January 2005. Summary of changes for version 20050114:
5173 Added 2005 copyright to all module headers. This affects every module in
5174 the core subsystem, iASL compiler, and the utilities.
5176 1) ACPI CA Core Subsystem:
5178 Fixed an issue with the String-to-Buffer conversion code where the string
5179 null terminator was not included in the buffer after conversion, but there
5180 is existing ASL that assumes the string null terminator is included. This is
5181 the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was
5182 introduced in the previous version when the code was updated to correctly
5183 set the converted buffer size as per the ACPI specification. The ACPI spec
5184 is ambiguous and will be updated to specify that the null terminator must be
5185 included in the converted buffer. This also affects the ToBuffer() ASL
5188 Fixed a problem with the Mid() ASL/AML operator where it did not work
5189 correctly on Buffer objects. Newly created sub-buffers were not being marked
5193 Fixed a problem in AcpiTbFindTable where incorrect string compares were
5194 performed on the OemId and OemTableId table header fields. These fields are
5195 not null terminated, so strncmp is now used instead of strcmp.
5197 Implemented a restriction on the Store() ASL/AML operator to align the
5198 behavior with the ACPI specification. Previously, any object could be used
5199 as the source operand. Now, the only objects that may be used are Integers,
5200 Buffers, Strings, Packages, Object References, and DDB Handles. If
5201 necessary, the original behavior can be restored by enabling the
5202 EnableInterpreterSlack flag.
5204 Enhanced the optional "implicit return" support to allow an implicit return
5205 value from methods that are invoked externally via the AcpiEvaluateObject
5206 interface. This enables implicit returns from the _STA and _INI methods,
5209 Changed the Revision() ASL/AML operator to return the current version of the
5210 AML interpreter, in the YYYYMMDD format. Previously, it incorrectly returned
5211 the supported ACPI version (This is the function of the _REV method).
5213 Updated the _REV predefined method to return the currently supported version
5216 Implemented batch mode option for the AcpiExec utility (-b).
5218 Code and Data Size: Current and previous core subsystem library sizes are
5219 shown below. These are the code and data sizes for the acpica.lib produced
5220 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5221 any ACPI driver or OSPM code. The debug version of the code includes the
5222 debug output trace mechanism and has a much larger code and data size. Note
5223 that these values will vary depending on the efficiency of the compiler and
5224 the compiler options used during generation.
5227 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
5228 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
5230 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
5231 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
5233 ----------------------------------------
5234 10 December 2004. Summary of changes for version 20041210:
5236 ACPI 3.0 support is nearing completion in both the iASL compiler and the
5237 ACPI CA core subsystem.
5239 1) ACPI CA Core Subsystem:
5241 Fixed a problem in the ToDecimalString operator where the resulting string
5242 length was incorrectly calculated. The length is now calculated exactly,
5243 eliminating incorrect AE_STRING_LIMIT exceptions.
5245 Fixed a problem in the ToHexString operator to allow a maximum 200 character
5246 string to be produced.
5248 Fixed a problem in the internal string-to-buffer and buffer-to-buffer copy
5249 routine where the length of the resulting buffer was not truncated to the
5250 new size (if the target buffer already existed).
5252 Code and Data Size: Current and previous core subsystem library sizes are
5253 shown below. These are the code and data sizes for the acpica.lib produced
5254 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5255 any ACPI driver or OSPM code. The debug version of the code includes the
5256 debug output trace mechanism and has a much larger code and data size. Note
5257 that these values will vary depending on the efficiency of the compiler and
5258 the compiler options used during generation.
5261 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
5262 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
5264 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
5265 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
5268 2) iASL Compiler/Disassembler:
5270 Implemented the new ACPI 3.0 resource template macros - DWordSpace,
5271 ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace.
5272 Includes support in the disassembler.
5274 Implemented support for the new (ACPI 3.0) parameter to the Register macro,
5277 Fixed a problem where the _HE resource name for the Interrupt macro was
5278 referencing bit 0 instead of bit 1.
5280 Implemented check for maximum 255 interrupts in the Interrupt macro.
5282 Fixed a problem with the predefined resource descriptor names where
5283 incorrect AML code was generated if the offset within the resource buffer
5284 was 0 or 1. The optimizer shortened the AML code to a single byte opcode
5285 but did not update the surrounding package lengths.
5287 Changes to the Dma macro: All channels within the channel list must be in
5288 the range 0-7. Maximum 8 channels can be specified. BusMaster operand is
5289 optional (default is BusMaster).
5291 Implemented check for maximum 7 data bytes for the VendorShort macro.
5293 The ReadWrite parameter is now optional for the Memory32 and similar macros.
5295 ----------------------------------------
5296 03 December 2004. Summary of changes for version 20041203:
5298 1) ACPI CA Core Subsystem:
5300 The low-level field insertion/extraction code (exfldio) has been completely
5301 rewritten to eliminate unnecessary complexity, bugs, and boundary
5304 Fixed a problem in the ToInteger, ToBuffer, ToHexString, and ToDecimalString
5305 operators where the input operand could be inadvertently deleted if no
5306 conversion was necessary (e.g., if the input to ToInteger was an Integer
5309 Fixed a problem with the ToDecimalString and ToHexString where an incorrect
5310 exception code was returned if the resulting string would be > 200 chars.
5311 AE_STRING_LIMIT is now returned.
5313 Fixed a problem with the Concatenate operator where AE_OK was always
5314 returned, even if the operation failed.
5316 Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128
5317 semaphores to be allocated.
5319 Code and Data Size: Current and previous core subsystem library sizes are
5320 shown below. These are the code and data sizes for the acpica.lib produced
5321 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5322 any ACPI driver or OSPM code. The debug version of the code includes the
5323 debug output trace mechanism and has a much larger code and data size. Note
5324 that these values will vary depending on the efficiency of the compiler and
5325 the compiler options used during generation.
5328 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
5329 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
5331 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
5332 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
5335 2) iASL Compiler/Disassembler:
5337 Fixed typechecking for the ObjectType and SizeOf operators. Problem was
5338 recently introduced in 20041119.
5340 Fixed a problem with the ToUUID macro where the upper nybble of each buffer
5341 byte was inadvertently set to zero.
5343 ----------------------------------------
5344 19 November 2004. Summary of changes for version 20041119:
5346 1) ACPI CA Core Subsystem:
5348 Fixed a problem in the internal ConvertToInteger routine where new integers
5349 were not truncated to 32 bits for 32-bit ACPI tables. This routine converts
5350 buffers and strings to integers.
5352 Implemented support to store a value to an Index() on a String object. This
5353 is an ACPI 2.0 feature that had not yet been implemented.
5355 Implemented new behavior for storing objects to individual package elements
5356 (via the Index() operator). The previous behavior was to invoke the implicit
5357 conversion rules if an object was already present at the index. The new
5358 behavior is to simply delete any existing object and directly store the new
5359 object. Although the ACPI specification seems unclear on this subject, other
5360 ACPI implementations behave in this manner. (This is the root of the
5361 AE_BAD_HEX_CONSTANT issue.)
5363 Modified the RSDP memory scan mechanism to support the extended checksum for
5364 ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid
5365 RSDP signature is found with a valid checksum.
5367 Code and Data Size: Current and previous core subsystem library sizes are
5368 shown below. These are the code and data sizes for the acpica.lib produced
5369 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5370 any ACPI driver or OSPM code. The debug version of the code includes the
5371 debug output trace mechanism and has a much larger code and data size. Note
5372 that these values will vary depending on the efficiency of the compiler and
5373 the compiler options used during generation.
5376 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
5377 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
5379 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
5380 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
5383 2) iASL Compiler/Disassembler:
5385 Fixed a missing semicolon in the aslcompiler.y file.
5387 ----------------------------------------
5388 05 November 2004. Summary of changes for version 20041105:
5390 1) ACPI CA Core Subsystem:
5392 Implemented support for FADT revision 2. This was an interim table (between
5393 ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register.
5395 Implemented optional support to allow uninitialized LocalX and ArgX
5396 variables in a control method. The variables are initialized to an Integer
5397 object with a value of zero. This support is enabled by setting the
5398 AcpiGbl_EnableInterpreterSlack flag to TRUE.
5400 Implemented support for Integer objects for the SizeOf operator. Either 4
5401 or 8 is returned, depending on the current integer size (32-bit or 64-bit,
5402 depending on the parent table revision).
5404 Fixed a problem in the implementation of the SizeOf and ObjectType operators
5405 where the operand was resolved to a value too early, causing incorrect
5406 return values for some objects.
5408 Fixed some possible memory leaks during exceptional conditions.
5410 Code and Data Size: Current and previous core subsystem library sizes are
5411 shown below. These are the code and data sizes for the acpica.lib produced
5412 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5413 any ACPI driver or OSPM code. The debug version of the code includes the
5414 debug output trace mechanism and has a much larger code and data size. Note
5415 that these values will vary depending on the efficiency of the compiler and
5416 the compiler options used during generation.
5419 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
5420 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
5422 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
5423 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
5426 2) iASL Compiler/Disassembler:
5428 Implemented support for all ACPI 3.0 reserved names and methods.
5430 Implemented all ACPI 3.0 grammar elements in the front-end, including
5431 support for semicolons.
5433 Implemented the ACPI 3.0 Function() and ToUUID() macros
5435 Fixed a problem in the disassembler where a Scope() operator would not be
5436 emitted properly if the target of the scope was in another table.
5438 ----------------------------------------
5439 15 October 2004. Summary of changes for version 20041015:
5441 Note: ACPI CA is currently undergoing an in-depth and complete formal
5442 evaluation to test/verify the following areas. Other suggestions are
5443 welcome. This will result in an increase in the frequency of releases and
5444 the number of bug fixes in the next few months.
5445 - Functional tests for all ASL/AML operators
5446 - All implicit/explicit type conversions
5447 - Bit fields and operation regions
5448 - 64-bit math support and 32-bit-only "truncated" math support
5449 - Exceptional conditions, both compiler and interpreter
5450 - Dynamic object deletion and memory leaks
5451 - ACPI 3.0 support when implemented
5452 - External interfaces to the ACPI subsystem
5455 1) ACPI CA Core Subsystem:
5457 Fixed two alignment issues on 64-bit platforms - within debug statements in
5458 AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the Address
5459 field within the non-aligned ACPI generic address structure.
5461 Fixed a problem in the Increment and Decrement operators where incorrect
5462 operand resolution could result in the inadvertent modification of the
5463 original integer when the integer is passed into another method as an
5464 argument and the arg is then incremented/decremented.
5466 Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-bit
5467 BCD number were truncated during conversion.
5469 Fixed a problem in the ToDecimal operator where the length of the resulting
5470 string could be set incorrectly too long if the input operand was a Buffer
5473 Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte (0)
5474 within a buffer would prematurely terminate a compare between buffer
5477 Added a check for string overflow (>200 characters as per the ACPI
5478 specification) during the Concatenate operator with two string operands.
5480 Code and Data Size: Current and previous core subsystem library sizes are
5481 shown below. These are the code and data sizes for the acpica.lib produced
5482 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5483 any ACPI driver or OSPM code. The debug version of the code includes the
5484 debug output trace mechanism and has a much larger code and data size. Note
5485 that these values will vary depending on the efficiency of the compiler and
5486 the compiler options used during generation.
5489 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
5490 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
5492 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
5493 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
5497 2) iASL Compiler/Disassembler:
5499 Allow the use of the ObjectType operator on uninitialized Locals and Args
5500 (returns 0 as per the ACPI specification).
5502 Fixed a problem where the compiler would fault if there was a syntax error
5503 in the FieldName of all of the various CreateXXXField operators.
5505 Disallow the use of lower case letters within the EISAID macro, as per the
5506 ACPI specification. All EISAID strings must be of the form "UUUNNNN" Where
5507 U is an uppercase letter and N is a hex digit.
5510 ----------------------------------------
5511 06 October 2004. Summary of changes for version 20041006:
5513 1) ACPI CA Core Subsystem:
5515 Implemented support for the ACPI 3.0 Timer operator. This ASL function
5516 implements a 64-bit timer with 100 nanosecond granularity.
5518 Defined a new OSL interface, AcpiOsGetTimer. This interface is used to
5519 implement the ACPI 3.0 Timer operator. This allows the host OS to implement
5520 the timer with the best clock available. Also, it keeps the core subsystem
5521 out of the clock handling business, since the host OS (usually) performs
5524 Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write)
5525 functions use a 64-bit address which is part of the packed ACPI Generic
5526 Address Structure. Since the structure is non-aligned, the alignment macros
5527 are now used to extract the address to a local variable before use.
5529 Fixed a problem where the ToInteger operator assumed all input strings were
5530 hexadecimal. The operator now handles both decimal strings and hex strings
5531 (prefixed with "0x").
5533 Fixed a problem where the string length in the string object created as a
5534 result of the internal ConvertToString procedure could be incorrect. This
5535 potentially affected all implicit conversions and also the ToDecimalString
5536 and ToHexString operators.
5538 Fixed two problems in the ToString operator. If the length parameter was
5539 zero, an incorrect string object was created and the value of the input
5540 length parameter was inadvertently changed from zero to Ones.
5542 Fixed a problem where the optional ResourceSource string in the ExtendedIRQ
5543 resource macro was ignored.
5545 Simplified the interfaces to the internal division functions, reducing code
5546 size and complexity.
5548 Code and Data Size: Current and previous core subsystem library sizes are
5549 shown below. These are the code and data sizes for the acpica.lib produced
5550 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5551 any ACPI driver or OSPM code. The debug version of the code includes the
5552 debug output trace mechanism and has a much larger code and data size. Note
5553 that these values will vary depending on the efficiency of the compiler and
5554 the compiler options used during generation.
5557 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
5558 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
5560 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
5561 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
5564 2) iASL Compiler/Disassembler:
5566 Implemented support for the ACPI 3.0 Timer operator.
5568 Fixed a problem where the Default() operator was inadvertently ignored in a
5569 Switch/Case block. This was a problem in the translation of the Switch
5570 statement to If...Else pairs.
5572 Added support to allow a standalone Return operator, with no parentheses (or
5575 Fixed a problem with code generation for the ElseIf operator where the
5576 translated Else...If parse tree was improperly constructed leading to the
5579 ----------------------------------------
5580 22 September 2004. Summary of changes for version 20040922:
5582 1) ACPI CA Core Subsystem:
5584 Fixed a problem with the implementation of the LNot() operator where "Ones"
5585 was not returned for the TRUE case. Changed the code to return Ones instead
5586 of (!Arg) which was usually 1. This change affects iASL constant folding for
5589 Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was not
5590 initialized properly -- Now zero the entire buffer in this case where the
5591 buffer already exists.
5593 Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32
5594 Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all
5595 related code considerably. This will require changes/updates to all OS
5596 interface layers (OSLs.)
5598 Implemented a new external interface, AcpiInstallExceptionHandler, to allow
5599 a system exception handler to be installed. This handler is invoked upon any
5600 run-time exception that occurs during control method execution.
5602 Added support for the DSDT in AcpiTbFindTable. This allows the
5603 DataTableRegion() operator to access the local copy of the DSDT.
5605 Code and Data Size: Current and previous core subsystem library sizes are
5606 shown below. These are the code and data sizes for the acpica.lib produced
5607 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5608 any ACPI driver or OSPM code. The debug version of the code includes the
5609 debug output trace mechanism and has a much larger code and data size. Note
5610 that these values will vary depending on the efficiency of the compiler and
5611 the compiler options used during generation.
5614 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
5615 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
5617 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
5618 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
5621 2) iASL Compiler/Disassembler:
5623 Fixed a problem with constant folding and the LNot operator. LNot was
5624 returning 1 in the TRUE case, not Ones as per the ACPI specification. This
5625 could result in the generation of an incorrect folded/reduced constant.
5627 End-Of-File is now allowed within a "//"-style comment. A parse error no
5628 longer occurs if such a comment is at the very end of the input ASL source
5631 Implemented the "-r" option to override the Revision in the table header.
5632 The initial use of this option will be to simplify the evaluation of the AML
5633 interpreter by allowing a single ASL source module to be compiled for either
5634 32-bit or 64-bit integers.
5637 ----------------------------------------
5638 27 August 2004. Summary of changes for version 20040827:
5640 1) ACPI CA Core Subsystem:
5642 - Implemented support for implicit object conversion in the non-numeric
5643 logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, and
5644 LNotEqual.) Any combination of Integers/Strings/Buffers may now be used;
5645 the second operand is implicitly converted on the fly to match the type of
5646 the first operand. For example:
5648 LEqual (Source1, Source2)
5650 Source1 and Source2 must each evaluate to an integer, a string, or a buffer.
5651 The data type of Source1 dictates the required type of Source2. Source2 is
5652 implicitly converted if necessary to match the type of Source1.
5654 - Updated and corrected the behavior of the string conversion support. The
5655 rules concerning conversion of buffers to strings (according to the ACPI
5656 specification) are as follows:
5658 ToDecimalString - explicit byte-wise conversion of buffer to string of
5659 decimal values (0-255) separated by commas. ToHexString - explicit byte-wise
5660 conversion of buffer to string of hex values (0-FF) separated by commas.
5661 ToString - explicit byte-wise conversion of buffer to string. Byte-by-byte
5662 copy with no transform except NULL terminated. Any other implicit buffer-to-
5663 string conversion - byte-wise conversion of buffer to string of hex values
5664 (0-FF) separated by spaces.
5666 - Fixed typo in definition of AcpiGbl_EnableInterpreterSlack.
5668 - Fixed a problem in AcpiNsGetPathnameLength where the returned length was
5669 one byte too short in the case of a node in the root scope. This could
5670 cause a fault during debug output.
5672 - Code and Data Size: Current and previous core subsystem library sizes are
5673 shown below. These are the code and data sizes for the acpica.lib produced
5674 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5675 any ACPI driver or OSPM code. The debug version of the code includes the
5676 debug output trace mechanism and has a much larger code and data size. Note
5677 that these values will vary depending on the efficiency of the compiler and
5678 the compiler options used during generation.
5681 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
5682 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
5684 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
5685 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
5688 2) iASL Compiler/Disassembler:
5690 - Fixed a Linux generation error.
5693 ----------------------------------------
5694 16 August 2004. Summary of changes for version 20040816:
5696 1) ACPI CA Core Subsystem:
5698 Designed and implemented support within the AML interpreter for the so-
5699 called "implicit return". This support returns the result of the last ASL
5700 operation within a control method, in the absence of an explicit Return()
5701 operator. A few machines depend on this behavior, even though it is not
5702 explicitly supported by the ASL language. It is optional support that can
5703 be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag.
5705 Removed support for the PCI_Config address space from the internal low level
5706 hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This
5707 support was not used internally, and would not work correctly anyway because
5708 the PCI bus number and segment number were not supported. There are
5709 separate interfaces for PCI configuration space access because of the unique
5712 Code and Data Size: Current and previous core subsystem library sizes are
5713 shown below. These are the code and data sizes for the acpica.lib produced
5714 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5715 any ACPI driver or OSPM code. The debug version of the code includes the
5716 debug output trace mechanism and has a much larger code and data size. Note
5717 that these values will vary depending on the efficiency of the compiler and
5718 the compiler options used during generation.
5721 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
5722 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
5724 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
5725 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
5728 2) iASL Compiler/Disassembler:
5730 Fixed a problem where constants in ASL expressions at the root level (not
5731 within a control method) could be inadvertently truncated during code
5732 generation. This problem was introduced in the 20040715 release.
5735 ----------------------------------------
5736 15 July 2004. Summary of changes for version 20040715:
5738 1) ACPI CA Core Subsystem:
5740 Restructured the internal HW GPE interfaces to pass/track the current state
5741 of interrupts (enabled/disabled) in order to avoid possible deadlock and
5742 increase flexibility of the interfaces.
5744 Implemented a "lexicographical compare" for String and Buffer objects within
5745 the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual --
5746 as per further clarification to the ACPI specification. Behavior is similar
5747 to C library "strcmp".
5749 Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable
5750 external function. In the 32-bit non-debug case, the stack use has been
5751 reduced from 168 bytes to 32 bytes.
5753 Deployed a new run-time configuration flag, AcpiGbl_EnableInterpreterSlack,
5754 whose purpose is to allow the AML interpreter to forgive certain bad AML
5755 constructs. Default setting is FALSE.
5757 Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field IO
5758 support code. If enabled, it allows field access to go beyond the end of a
5759 region definition if the field is within the region length rounded up to the
5760 next access width boundary (a common coding error.)
5762 Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to
5763 ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also, these
5764 symbols are lowercased by the latest version of the AcpiSrc tool.
5766 The prototypes for the PCI interfaces in acpiosxf.h have been updated to
5767 rename "Register" to simply "Reg" to prevent certain compilers from
5770 Code and Data Size: Current and previous core subsystem library sizes are
5771 shown below. These are the code and data sizes for the acpica.lib produced
5772 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5773 any ACPI driver or OSPM code. The debug version of the code includes the
5774 debug output trace mechanism and has a much larger code and data size. Note
5775 that these values will vary depending on the efficiency of the compiler and
5776 the compiler options used during generation.
5779 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
5780 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
5782 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
5783 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
5786 2) iASL Compiler/Disassembler:
5788 Implemented full support for Package objects within the Case() operator.
5789 Note: The Break() operator is currently not supported within Case blocks
5790 (TermLists) as there is some question about backward compatibility with ACPI
5794 Fixed a problem where complex terms were not supported properly within the
5797 Eliminated extraneous warning for compiler-emitted reserved names of the
5798 form "_T_x". (Used in Switch/Case operators.)
5800 Eliminated optimization messages for "_T_x" objects and small constants
5801 within the DefinitionBlock operator.
5804 ----------------------------------------
5805 15 June 2004. Summary of changes for version 20040615:
5807 1) ACPI CA Core Subsystem:
5809 Implemented support for Buffer and String objects (as per ACPI 2.0) for the
5810 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
5813 All directory names in the entire source package are lower case, as they
5814 were in earlier releases.
5816 Implemented "Disassemble" command in the AML debugger that will disassemble
5817 a single control method.
5819 Code and Data Size: Current and previous core subsystem library sizes are
5820 shown below. These are the code and data sizes for the acpica.lib produced
5821 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5822 any ACPI driver or OSPM code. The debug version of the code includes the
5823 debug output trace mechanism and has a much larger code and data size. Note
5824 that these values will vary depending on the efficiency of the compiler and
5825 the compiler options used during generation.
5828 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
5829 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
5832 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
5833 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
5836 2) iASL Compiler/Disassembler:
5838 Implemented support for Buffer and String objects (as per ACPI 2.0) for the
5839 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
5842 All directory names in the entire source package are lower case, as they
5843 were in earlier releases.
5845 Fixed a fault when using the -g or -d<nofilename> options if the FADT was
5848 Fixed an issue with the Windows version of the compiler where later versions
5849 of Windows place the FADT in the registry under the name "FADT" and not
5850 "FACP" as earlier versions did. This applies when using the -g or -
5851 d<nofilename> options. The compiler now looks for both strings as
5854 Fixed a problem with compiler namepath optimization where a namepath within
5855 the Scope() operator could not be optimized if the namepath was a subpath of
5856 the current scope path.
5858 ----------------------------------------
5859 27 May 2004. Summary of changes for version 20040527:
5861 1) ACPI CA Core Subsystem:
5863 Completed a new design and implementation for EBDA (Extended BIOS Data Area)
5864 support in the RSDP scan code. The original code improperly scanned for the
5865 EBDA by simply scanning from memory location 0 to 0x400. The correct method
5866 is to first obtain the EBDA pointer from within the BIOS data area, then
5867 scan 1K of memory starting at the EBDA pointer. There appear to be few if
5868 any machines that place the RSDP in the EBDA, however.
5870 Integrated a fix for a possible fault during evaluation of BufferField
5871 arguments. Obsolete code that was causing the problem was removed.
5873 Found and fixed a problem in the Field Support Code where data could be
5874 corrupted on a bit field read that starts on an aligned boundary but does
5875 not end on an aligned boundary. Merged the read/write "datum length"
5876 calculation code into a common procedure.
5878 Rolled in a couple of changes to the FreeBSD-specific header.
5881 Code and Data Size: Current and previous core subsystem library sizes are
5882 shown below. These are the code and data sizes for the acpica.lib produced
5883 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5884 any ACPI driver or OSPM code. The debug version of the code includes the
5885 debug output trace mechanism and has a much larger code and data size. Note
5886 that these values will vary depending on the efficiency of the compiler and
5887 the compiler options used during generation.
5890 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
5891 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
5893 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
5894 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
5897 2) iASL Compiler/Disassembler:
5899 Fixed a generation warning produced by some overly-verbose compilers for a
5902 ----------------------------------------
5903 14 May 2004. Summary of changes for version 20040514:
5905 1) ACPI CA Core Subsystem:
5907 Fixed a problem where hardware GPE enable bits sometimes not set properly
5908 during and after GPE method execution. Result of 04/27 changes.
5910 Removed extra "clear all GPEs" when sleeping/waking.
5912 Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single
5913 AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above to
5914 the new AcpiEv* calls as appropriate.
5916 ACPI_OS_NAME was removed from the OS-specific headers. The default name is
5917 now "Microsoft Windows NT" for maximum compatibility. However this can be
5918 changed by modifying the acconfig.h file.
5920 Allow a single invocation of AcpiInstallNotifyHandler for a handler that
5921 traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag.
5923 Run _INI methods on ThermalZone objects. This is against the ACPI
5924 specification, but there is apparently ASL code in the field that has these
5925 _INI methods, and apparently "other" AML interpreters execute them.
5927 Performed a full 16/32/64 bit lint that resulted in some small changes.
5929 Added a sleep simulation command to the AML debugger to test sleep code.
5931 Code and Data Size: Current and previous core subsystem library sizes are
5932 shown below. These are the code and data sizes for the acpica.lib produced
5933 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5934 any ACPI driver or OSPM code. The debug version of the code includes the
5935 debug output trace mechanism and has a much larger code and data size. Note
5936 that these values will vary depending on the efficiency of the compiler and
5937 the compiler options used during generation.
5940 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
5941 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
5943 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
5944 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
5946 ----------------------------------------
5947 27 April 2004. Summary of changes for version 20040427:
5949 1) ACPI CA Core Subsystem:
5951 Completed a major overhaul of the GPE handling within ACPI CA. There are
5952 now three types of GPEs: wake-only, runtime-only, and combination wake/run.
5953 The only GPEs allowed to be combination wake/run are for button-style
5954 devices such as a control-method power button, control-method sleep button,
5955 or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are not
5956 referenced by any _PRW methods are marked for "runtime" and hardware
5957 enabled. Any GPE that is referenced by a _PRW method is marked for "wake"
5958 (and disabled at runtime). However, at sleep time, only those GPEs that
5959 have been specifically enabled for wake via the AcpiEnableGpe interface will
5960 actually be hardware enabled.
5962 A new external interface has been added, AcpiSetGpeType(), that is meant to
5963 be used by device drivers to force a GPE to a particular type. It will be
5964 especially useful for the drivers for the button devices mentioned above.
5966 Completed restructuring of the ACPI CA initialization sequence so that
5967 default operation region handlers are installed before GPEs are initialized
5968 and the _PRW methods are executed. This will prevent errors when the _PRW
5969 methods attempt to access system memory or I/O space.
5971 GPE enable/disable no longer reads the GPE enable register. We now keep the
5972 enable info for runtime and wake separate and in the GPE_EVENT_INFO. We
5973 thus no longer depend on the hardware to maintain these bits.
5975 Always clear the wake status and fixed/GPE status bits before sleep, even
5978 Improved the AML debugger output for displaying the GPE blocks and their
5981 Added new strings for the _OSI method, of the form "Windows 2001 SPx" where
5984 Fixed a problem where the physical address was incorrectly calculated when
5985 the Load() operator was used to directly load from an Operation Region (vs.
5986 loading from a Field object.) Also added check for minimum table length for
5989 Fix for multiple mutex acquisition. Restore original thread SyncLevel on
5992 Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for
5993 consistency with the other fields returned.
5995 Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such
5996 structure for each GPE in the system, so the size of this structure is
5999 CPU stack requirement reduction: Cleaned up the method execution and object
6000 evaluation paths so that now a parameter structure is passed, instead of
6001 copying the various method parameters over and over again.
6003 In evregion.c: Correctly exit and reenter the interpreter region if and
6004 only if dispatching an operation region request to a user-installed handler.
6005 Do not exit/reenter when dispatching to a default handler (e.g., default
6006 system memory or I/O handlers)
6009 Notes for updating drivers for the new GPE support. The following changes
6010 must be made to ACPI-related device drivers that are attached to one or more
6011 GPEs: (This information will be added to the ACPI CA Programmer Reference.)
6013 1) AcpiInstallGpeHandler no longer automatically enables the GPE, you must
6014 explicitly call AcpiEnableGpe.
6015 2) There is a new interface called AcpiSetGpeType. This should be called
6016 before enabling the GPE. Also, this interface will automatically disable
6017 the GPE if it is currently enabled.
6018 3) AcpiEnableGpe no longer supports a GPE type flag.
6020 Specific drivers that must be changed:
6022 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED,
6023 AeGpeHandler, NULL);
6024 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME);
6025 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR);
6027 2) Button Drivers (Power, Lid, Sleep):
6028 Run _PRW method under parent device
6029 If _PRW exists: /* This is a control-method button */
6030 Extract GPE number and possibly GpeDevice
6031 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN);
6032 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR);
6034 For all other devices that have _PRWs, we automatically set the GPE type to
6035 ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. This
6036 must be done on a selective basis, usually requiring some kind of user app
6037 to allow the user to pick the wake devices.
6040 Code and Data Size: Current and previous core subsystem library sizes are
6041 shown below. These are the code and data sizes for the acpica.lib produced
6042 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
6043 any ACPI driver or OSPM code. The debug version of the code includes the
6044 debug output trace mechanism and has a much larger code and data size. Note
6045 that these values will vary depending on the efficiency of the compiler and
6046 the compiler options used during generation.
6049 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
6050 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
6053 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
6054 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
6058 ----------------------------------------
6059 02 April 2004. Summary of changes for version 20040402:
6061 1) ACPI CA Core Subsystem:
6063 Fixed an interpreter problem where an indirect store through an ArgX
6064 parameter was incorrectly applying the "implicit conversion rules" during
6065 the store. From the ACPI specification: "If the target is a method local or
6066 argument (LocalX or ArgX), no conversion is performed and the result is
6067 stored directly to the target". The new behavior is to disable implicit
6068 conversion during ALL stores to an ArgX.
6070 Changed the behavior of the _PRW method scan to ignore any and all errors
6071 returned by a given _PRW. This prevents the scan from aborting from the
6072 failure of any single _PRW.
6074 Moved the runtime configuration parameters from the global init procedure to
6075 static variables in acglobal.h. This will allow the host to override the
6076 default values easily.
6078 Code and Data Size: Current and previous core subsystem library sizes are
6079 shown below. These are the code and data sizes for the acpica.lib produced
6080 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
6081 any ACPI driver or OSPM code. The debug version of the code includes the
6082 debug output trace mechanism and has a much larger code and data size. Note
6083 that these values will vary depending on the efficiency of the compiler and
6084 the compiler options used during generation.
6087 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
6088 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
6090 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
6091 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
6094 2) iASL Compiler/Disassembler:
6096 iASL now fully disassembles SSDTs. However, External() statements are not
6097 generated automatically for unresolved symbols at this time. This is a
6098 planned feature for future implementation.
6100 Fixed a scoping problem in the disassembler that occurs when the type of the
6101 target of a Scope() operator is overridden. This problem caused an
6102 incorrectly nested internal namespace to be constructed.
6104 Any warnings or errors that are emitted during disassembly are now commented
6105 out automatically so that the resulting file can be recompiled without any
6108 ----------------------------------------
6109 26 March 2004. Summary of changes for version 20040326:
6111 1) ACPI CA Core Subsystem:
6113 Implemented support for "wake" GPEs via interaction between GPEs and the
6114 _PRW methods. Every GPE that is pointed to by one or more _PRWs is
6115 identified as a WAKE GPE and by default will no longer be enabled at
6116 runtime. Previously, we were blindly enabling all GPEs with a corresponding
6117 _Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway. We
6118 believe this has been the cause of thousands of "spurious" GPEs on some
6121 This new GPE behavior is can be reverted to the original behavior (enable
6122 ALL GPEs at runtime) via a runtime flag.
6124 Fixed a problem where aliased control methods could not access objects
6125 properly. The proper scope within the namespace was not initialized
6126 (transferred to the target of the aliased method) before executing the
6129 Fixed a potential race condition on internal object deletion on the return
6130 object in AcpiEvaluateObject.
6132 Integrated a fix for resource descriptors where both _MEM and _MTP were
6133 being extracted instead of just _MEM. (i.e. bitmask was incorrectly too
6134 wide, 0x0F instead of 0x03.)
6136 Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, preventing a
6137 fault in some cases.
6139 Updated Notify() values for debug statements in evmisc.c
6141 Return proper status from AcpiUtMutexInitialize, not just simply AE_OK.
6143 Code and Data Size: Current and previous core subsystem library sizes are
6144 shown below. These are the code and data sizes for the acpica.lib produced
6145 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
6146 any ACPI driver or OSPM code. The debug version of the code includes the
6147 debug output trace mechanism and has a much larger code and data size. Note
6148 that these values will vary depending on the efficiency of the compiler and
6149 the compiler options used during generation.
6153 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
6154 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
6156 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
6157 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
6159 ----------------------------------------
6160 11 March 2004. Summary of changes for version 20040311:
6162 1) ACPI CA Core Subsystem:
6164 Fixed a problem where errors occurring during the parse phase of control
6165 method execution did not abort cleanly. For example, objects created and
6166 installed in the namespace were not deleted. This caused all subsequent
6167 invocations of the method to return the AE_ALREADY_EXISTS exception.
6169 Implemented a mechanism to force a control method to "Serialized" execution
6170 if the method attempts to create namespace objects. (The root of the
6171 AE_ALREADY_EXISTS problem.)
6173 Implemented support for the predefined _OSI "internal" control method.
6174 Initial supported strings are "Linux", "Windows 2000", "Windows 2001", and
6175 "Windows 2001.1", and can be easily upgraded for new strings as necessary.
6176 This feature will allow "other" operating systems to execute the fully
6177 tested, "Windows" code path through the ASL code
6179 Global Lock Support: Now allows multiple acquires and releases with any
6180 internal thread. Removed concept of "owning thread" for this special mutex.
6182 Fixed two functions that were inappropriately declaring large objects on the
6183 CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage during
6184 method execution considerably.
6186 Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the
6187 S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT.
6189 Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs
6190 defined on the machine.
6192 Implemented two runtime options: One to force all control method execution
6193 to "Serialized" to mimic Windows behavior, another to disable _OSI support
6194 if it causes problems on a given machine.
6196 Code and Data Size: Current and previous core subsystem library sizes are
6197 shown below. These are the code and data sizes for the acpica.lib produced
6198 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
6199 any ACPI driver or OSPM code. The debug version of the code includes the
6200 debug output trace mechanism and has a much larger code and data size. Note
6201 that these values will vary depending on the efficiency of the compiler and
6202 the compiler options used during generation.
6205 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
6206 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
6208 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
6209 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
6211 2) iASL Compiler/Disassembler:
6213 Fixed an array size problem for FreeBSD that would cause the compiler to
6216 ----------------------------------------
6217 20 February 2004. Summary of changes for version 20040220:
6220 1) ACPI CA Core Subsystem:
6222 Implemented execution of _SxD methods for Device objects in the
6223 GetObjectInfo interface.
6225 Fixed calls to _SST method to pass the correct arguments.
6227 Added a call to _SST on wake to restore to "working" state.
6229 Check for End-Of-Buffer failure case in the WalkResources interface.
6231 Integrated fix for 64-bit alignment issue in acglobal.h by moving two
6232 structures to the beginning of the file.
6234 After wake, clear GPE status register(s) before enabling GPEs.
6236 After wake, clear/enable power button. (Perhaps we should clear/enable all
6237 fixed events upon wake.)
6239 Fixed a couple of possible memory leaks in the Namespace manager.
6241 Integrated latest acnetbsd.h file.
6243 ----------------------------------------
6244 11 February 2004. Summary of changes for version 20040211:
6247 1) ACPI CA Core Subsystem:
6249 Completed investigation and implementation of the call-by-reference
6250 mechanism for control method arguments.
6252 Fixed a problem where a store of an object into an indexed package could
6253 fail if the store occurs within a different method than the method that
6254 created the package.
6256 Fixed a problem where the ToDecimal operator could return incorrect results.
6258 Fixed a problem where the CopyObject operator could fail on some of the more
6259 obscure objects (e.g., Reference objects.)
6261 Improved the output of the Debug object to display buffer, package, and
6264 Fixed a problem where constructs of the form "RefOf (ArgX)" did not return
6265 the expected result.
6267 Added permanent ACPI_REPORT_ERROR macros for all instances of the
6268 ACPI_AML_INTERNAL exception.
6270 Integrated latest version of acfreebsd.h
6272 ----------------------------------------
6273 16 January 2004. Summary of changes for version 20040116:
6275 The purpose of this release is primarily to update the copyright years in
6276 each module, thus causing a huge number of diffs. There are a few small
6277 functional changes, however.
6279 1) ACPI CA Core Subsystem:
6281 Improved error messages when there is a problem finding one or more of the
6282 required base ACPI tables
6284 Reintroduced the definition of APIC_HEADER in actbl.h
6286 Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h)
6288 Removed extraneous reference to NewObj in dsmthdat.c
6292 Fixed a problem introduced in December that disabled the correct disassembly
6293 of Resource Templates
6296 ----------------------------------------
6297 03 December 2003. Summary of changes for version 20031203:
6299 1) ACPI CA Core Subsystem:
6301 Changed the initialization of Operation Regions during subsystem
6302 init to perform two entire walks of the ACPI namespace; The first
6303 to initialize the regions themselves, the second to execute the
6304 _REG methods. This fixed some interdependencies across _REG
6305 methods found on some machines.
6307 Fixed a problem where a Store(Local0, Local1) could simply update
6308 the object reference count, and not create a new copy of the
6309 object if the Local1 is uninitialized.
6311 Implemented support for the _SST reserved method during sleep
6314 Implemented support to clear the SLP_TYP and SLP_EN bits when
6315 waking up, this is apparently required by some machines.
6317 When sleeping, clear the wake status only if SleepState is not S5.
6319 Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect
6320 pointer arithmetic advanced a string pointer too far.
6322 Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer
6323 could be returned if the requested table has not been loaded.
6325 Within the support for IRQ resources, restructured the handling of
6326 the active and edge/level bits.
6328 Fixed a few problems in AcpiPsxExecute() where memory could be
6329 leaked under certain error conditions.
6331 Improved error messages for the cases where the ACPI mode could
6334 Code and Data Size: Current and previous core subsystem library
6335 sizes are shown below. These are the code and data sizes for the
6336 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
6337 these values do not include any ACPI driver or OSPM code. The
6338 debug version of the code includes the debug output trace
6339 mechanism and has a much larger code and data size. Note that
6340 these values will vary depending on the efficiency of the compiler
6341 and the compiler options used during generation.
6343 Previous Release (20031029):
6344 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
6345 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
6347 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
6348 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
6350 2) iASL Compiler/Disassembler:
6352 Implemented a fix for the iASL disassembler where a bad index was
6353 generated. This was most noticeable on 64-bit platforms
6356 ----------------------------------------
6357 29 October 2003. Summary of changes for version 20031029:
6359 1) ACPI CA Core Subsystem:
6362 Fixed a problem where a level-triggered GPE with an associated
6363 _Lxx control method was incorrectly cleared twice.
6365 Fixed a problem with the Field support code where an access can
6366 occur beyond the end-of-region if the field is non-aligned but
6367 extends to the very end of the parent region (resulted in an
6368 AE_AML_REGION_LIMIT exception.)
6370 Fixed a problem with ACPI Fixed Events where an RT Clock handler
6371 would not get invoked on an RTC event. The RTC event bitmasks for
6372 the PM1 registers were not being initialized properly.
6374 Implemented support for executing _STA and _INI methods for
6375 Processor objects. Although this is currently not part of the
6376 ACPI specification, there is existing ASL code that depends on the
6377 init-time execution of these methods.
6379 Implemented and deployed a GetDescriptorName function to decode
6380 the various types of internal descriptors. Guards against null
6381 descriptors during debug output also.
6383 Implemented and deployed a GetNodeName function to extract the 4-
6384 character namespace node name. This function simplifies the debug
6385 and error output, as well as guarding against null pointers during
6388 Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to
6389 simplify the debug and error output of 64-bit integers. This
6390 macro replaces the HIDWORD and LODWORD macros for dumping these
6393 Updated the implementation of the Stall() operator to only call
6394 AcpiOsStall(), and also return an error if the operand is larger
6395 than 255. This preserves the required behavior of not
6396 relinquishing the processor, as would happen if AcpiOsSleep() was
6397 called for "long stalls".
6399 Constructs of the form "Store(LocalX,LocalX)" where LocalX is not
6400 initialized are now treated as NOOPs.
6402 Cleaned up a handful of warnings during 64-bit generation.
6404 Fixed a reported error where and incorrect GPE number was passed
6405 to the GPE dispatch handler. This value is only used for error
6406 output, however. Used this opportunity to clean up and streamline
6407 the GPE dispatch code.
6409 Code and Data Size: Current and previous core subsystem library
6410 sizes are shown below. These are the code and data sizes for the
6411 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
6412 these values do not include any ACPI driver or OSPM code. The
6414 debug version of the code includes the debug output trace
6415 mechanism and has a much larger code and data size. Note that
6416 these values will vary depending on the efficiency of the compiler
6417 and the compiler options used during generation.
6419 Previous Release (20031002):
6420 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
6421 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
6423 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
6424 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
6427 2) iASL Compiler/Disassembler:
6429 Updated the iASL compiler to return an error if the operand to the
6430 Stall() operator is larger than 255.
6433 ----------------------------------------
6434 02 October 2003. Summary of changes for version 20031002:
6437 1) ACPI CA Core Subsystem:
6439 Fixed a problem with Index Fields where the index was not
6440 incremented for fields that require multiple writes to the
6441 index/data registers (Fields that are wider than the data
6444 Fixed a problem with all Field objects where a write could go
6445 beyond the end-of-field if the field was larger than the access
6446 granularity and therefore required multiple writes to complete the
6447 request. An extra write beyond the end of the field could happen
6450 Fixed a problem with Index Fields where a BUFFER_OVERFLOW error
6451 would incorrectly be returned if the width of the Data Register
6452 was larger than the specified field access width.
6454 Completed fixes for LoadTable() and Unload() and verified their
6455 operation. Implemented full support for the "DdbHandle" object
6456 throughout the ACPI CA subsystem.
6458 Implemented full support for the MADT and ECDT tables in the ACPI
6459 CA header files. Even though these tables are not directly
6460 consumed by ACPI CA, the header definitions are useful for ACPI
6463 Integrated resource descriptor fixes posted to the Linux ACPI
6464 list. This included checks for minimum descriptor length, and
6465 support for trailing NULL strings within descriptors that have
6466 optional string elements.
6468 Code and Data Size: Current and previous core subsystem library
6469 sizes are shown below. These are the code and data sizes for the
6470 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
6471 these values do not include any ACPI driver or OSPM code. The
6472 debug version of the code includes the debug output trace
6473 mechanism and has a much larger code and data size. Note that
6474 these values will vary depending on the efficiency of the compiler
6475 and the compiler options used during generation.
6477 Previous Release (20030918):
6478 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
6479 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
6481 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
6482 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
6487 Implemented detection of non-ASCII characters within the input
6488 source ASL file. This catches attempts to compile binary (AML)
6489 files early in the compile, with an informative error message.
6491 Fixed a problem where the disassembler would fault if the output
6492 filename could not be generated or if the output file could not be
6495 ----------------------------------------
6496 18 September 2003. Summary of changes for version 20030918:
6499 1) ACPI CA Core Subsystem:
6501 Found and fixed a longstanding problem with the late execution of
6502 the various deferred AML opcodes (such as Operation Regions,
6503 Buffer Fields, Buffers, and Packages). If the name string
6504 specified for the name of the new object placed the object in a
6505 scope other than the current scope, the initialization/execution
6506 of the opcode failed. The solution to this problem was to
6507 implement a mechanism where the late execution of such opcodes
6508 does not attempt to lookup/create the name a second time in an
6509 incorrect scope. This fixes the "region size computed
6510 incorrectly" problem.
6512 Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a
6513 Global Lock AE_BAD_PARAMETER error.
6515 Fixed several 64-bit issues with prototypes, casting and data
6518 Removed duplicate prototype from acdisasm.h
6520 Fixed an issue involving EC Operation Region Detach (Shaohua Li)
6522 Code and Data Size: Current and previous core subsystem library
6523 sizes are shown below. These are the code and data sizes for the
6524 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
6525 these values do not include any ACPI driver or OSPM code. The
6526 debug version of the code includes the debug output trace
6527 mechanism and has a much larger code and data size. Note that
6528 these values will vary depending on the efficiency of the compiler
6529 and the compiler options used during generation.
6533 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
6534 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
6536 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
6537 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
6542 Fixed the AcpiOsSleep implementation in osunixxf.c to pass the
6543 correct sleep time in seconds.
6545 ----------------------------------------
6546 14 July 2003. Summary of changes for version 20030619:
6548 1) ACPI CA Core Subsystem:
6550 Parse SSDTs in order discovered, as opposed to reverse order
6553 Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas
6560 Dynamically allocate SDT list (suggested by Andi Kleen)
6562 proc function return value cleanups (Andi Kleen)
6564 Correctly handle NMI watchdog during long stalls (Andrew Morton)
6566 Make it so acpismp=force works (reported by Andrew Morton)
6569 ----------------------------------------
6570 19 June 2003. Summary of changes for version 20030619:
6572 1) ACPI CA Core Subsystem:
6574 Fix To/FromBCD, eliminating the need for an arch-specific #define.
6576 Do not acquire a semaphore in the S5 shutdown path.
6578 Fix ex_digits_needed for 0. (Takayoshi Kochi)
6580 Fix sleep/stall code reversal. (Andi Kleen)
6582 Revert a change having to do with control method calling
6587 acpiphp update (Takayoshi Kochi)
6589 Export acpi_disabled for sonypi (Stelian Pop)
6591 Mention acpismp=force in config help
6593 Re-add acpitable.c and acpismp=force. This improves backwards
6595 compatibility and also cleans up the code to a significant degree.
6597 Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge)
6599 ----------------------------------------
6600 22 May 2003. Summary of changes for version 20030522:
6602 1) ACPI CA Core Subsystem:
6604 Found and fixed a reported problem where an AE_NOT_FOUND error
6605 occurred occasionally during _BST evaluation. This turned out to
6606 be an Owner ID allocation issue where a called method did not get
6607 a new ID assigned to it. Eventually, (after 64k calls), the Owner
6608 ID UINT16 would wraparound so that the ID would be the same as the
6609 caller's and the called method would delete the caller's
6612 Implemented extended error reporting for control methods that are
6613 aborted due to a run-time exception. Output includes the exact
6614 AML instruction that caused the method abort, a dump of the method
6615 locals and arguments at the time of the abort, and a trace of all
6616 nested control method calls.
6618 Modified the interpreter to allow the creation of buffers of zero
6619 length from the AML code. Implemented new code to ensure that no
6620 attempt is made to actually allocate a memory buffer (of length
6621 zero) - instead, a simple buffer object with a NULL buffer pointer
6622 and length zero is created. A warning is no longer issued when
6623 the AML attempts to create a zero-length buffer.
6625 Implemented a workaround for the "leading asterisk issue" in
6626 _HIDs, _UIDs, and _CIDs in the AML interpreter. One leading
6627 asterisk is automatically removed if present in any HID, UID, or
6628 CID strings. The iASL compiler will still flag this asterisk as
6631 Implemented full support for _CID methods that return a package of
6632 multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface
6633 now additionally returns a device _CID list if present. This
6634 required a change to the external interface in order to pass an
6635 ACPI_BUFFER object as a parameter since the _CID list is of
6638 Fixed a problem with the new AE_SAME_HANDLER exception where
6639 handler initialization code did not know about this exception.
6641 Code and Data Size: Current and previous core subsystem library
6642 sizes are shown below. These are the code and data sizes for the
6643 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
6644 these values do not include any ACPI driver or OSPM code. The
6645 debug version of the code includes the debug output trace
6646 mechanism and has a much larger code and data size. Note that
6647 these values will vary depending on the efficiency of the compiler
6648 and the compiler options used during generation.
6650 Previous Release (20030509):
6651 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
6652 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
6654 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
6655 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
6660 Fixed a bug in which we would reinitialize the ACPI interrupt
6661 after it was already working, thus disabling all ACPI and the IRQs
6662 for any other device sharing the interrupt. (Thanks to Stian
6665 Toshiba driver update (John Belmonte)
6667 Return only 0 or 1 for our interrupt handler status (Andrew
6673 Fixed a reported problem where multiple (nested) ElseIf()
6674 statements were not handled correctly by the compiler, resulting
6675 in incorrect warnings and incorrect AML code. This was a problem
6676 in both the ASL parser and the code generator.
6681 Added changes to existing interfaces, new exception codes, and new
6682 text concerning reference count object management versus garbage
6685 ----------------------------------------
6686 09 May 2003. Summary of changes for version 20030509.
6689 1) ACPI CA Core Subsystem:
6691 Changed the subsystem initialization sequence to hold off
6692 installation of address space handlers until the hardware has been
6693 initialized and the system has entered ACPI mode. This is because
6694 the installation of space handlers can cause _REG methods to be
6695 run. Previously, the _REG methods could potentially be run before
6696 ACPI mode was enabled.
6698 Fixed some memory leak issues related to address space handler and
6699 notify handler installation. There were some problems with the
6700 reference count mechanism caused by the fact that the handler
6701 objects are shared across several namespace objects.
6703 Fixed a reported problem where reference counts within the
6704 namespace were not properly updated when named objects created by
6705 method execution were deleted.
6707 Fixed a reported problem where multiple SSDTs caused a deletion
6708 issue during subsystem termination. Restructured the table data
6709 structures to simplify the linked lists and the related code.
6711 Fixed a problem where the table ID associated with secondary
6712 tables (SSDTs) was not being propagated into the namespace objects
6713 created by those tables. This would only present a problem for
6714 tables that are unloaded at run-time, however.
6716 Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE
6717 type as the length parameter (instead of UINT32).
6719 Solved a long-standing problem where an ALREADY_EXISTS error
6720 appears on various systems. This problem could happen when there
6721 are multiple PCI_Config operation regions under a single PCI root
6722 bus. This doesn't happen very frequently, but there are some
6723 systems that do this in the ASL.
6725 Fixed a reported problem where the internal DeleteNode function
6726 was incorrectly handling the case where a namespace node was the
6727 first in the parent's child list, and had additional peers (not
6728 the only child, but first in the list of children.)
6730 Code and Data Size: Current core subsystem library sizes are shown
6731 below. These are the code and data sizes for the acpica.lib
6732 produced by the Microsoft Visual C++ 6.0 compiler, and these
6733 values do not include any ACPI driver or OSPM code. The debug
6734 version of the code includes the debug output trace mechanism and
6735 has a much larger code and data size. Note that these values will
6736 vary depending on the efficiency of the compiler and the compiler
6737 options used during generation.
6740 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
6741 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
6743 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
6744 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
6749 Allow ":" in OS override string (Ducrot Bruno)
6751 Kobject fix (Greg KH)
6754 3 iASL Compiler/Disassembler:
6756 Fixed a problem in the generation of the C source code files (AML
6757 is emitted in C source statements for BIOS inclusion) where the
6758 Ascii dump that appears within a C comment at the end of each line
6759 could cause a compile time error if the AML sequence happens to
6760 have an open comment or close comment sequence embedded.
6763 ----------------------------------------
6764 24 April 2003. Summary of changes for version 20030424.
6767 1) ACPI CA Core Subsystem:
6769 Support for big-endian systems has been implemented. Most of the
6770 support has been invisibly added behind big-endian versions of the
6773 Fixed a problem in AcpiHwDisableGpeBlock() and
6774 AcpiHwClearGpeBlock() where an incorrect offset was passed to the
6775 low level hardware write routine. The offset parameter was
6776 actually eliminated from the low level read/write routines because
6777 they had become obsolete.
6779 Fixed a problem where a handler object was deleted twice during
6780 the removal of a fixed event handler.
6785 A fix for SMP systems with link devices was contributed by
6789 (2.5) Return whether we handled the interrupt in our IRQ handler.
6790 (Linux ISRs no longer return void, so we can propagate the handler
6791 return value from the ACPI CA core back to the OS.)
6797 The ACPI CA Programmer Reference has been updated to reflect new
6798 interfaces and changes to existing interfaces.
6800 ----------------------------------------
6801 28 March 2003. Summary of changes for version 20030328.
6803 1) ACPI CA Core Subsystem:
6805 The GPE Block Device support has been completed. New interfaces
6806 are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event
6807 interfaces (enable, disable, clear, getstatus) have been split
6808 into separate interfaces for Fixed Events and General Purpose
6809 Events (GPEs) in order to support GPE Block Devices properly.
6811 Fixed a problem where the error message "Failed to acquire
6812 semaphore" would appear during operations on the embedded
6815 Code and Data Size: Current core subsystem library sizes are shown
6816 below. These are the code and data sizes for the acpica.lib
6817 produced by the Microsoft Visual C++ 6.0 compiler, and these
6818 values do not include any ACPI driver or OSPM code. The debug
6819 version of the code includes the debug output trace mechanism and
6820 has a much larger code and data size. Note that these values will
6821 vary depending on the efficiency of the compiler and the compiler
6822 options used during generation.
6825 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
6826 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
6828 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
6829 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
6832 ----------------------------------------
6833 28 February 2003. Summary of changes for version 20030228.
6836 1) ACPI CA Core Subsystem:
6838 The GPE handling and dispatch code has been completely overhauled
6839 in preparation for support of GPE Block Devices (ID ACPI0006).
6840 This affects internal data structures and code only; there should
6841 be no differences visible externally. One new file has been
6844 The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only
6845 fields that are used to determine the GPE block lengths. The
6846 REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address
6847 structures are ignored. This is per the ACPI specification but it
6848 isn't very clear. The full 256 Block 0/1 GPEs are now supported
6849 (the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128).
6851 In the SCI interrupt handler, removed the read of the PM1_CONTROL
6852 register to look at the SCI_EN bit. On some machines, this read
6853 causes an SMI event and greatly slows down SCI events. (This may
6854 in fact be the cause of slow battery status response on some
6857 Fixed a problem where a store of a NULL string to a package object
6858 could cause the premature deletion of the object. This was seen
6859 during execution of the battery _BIF method on some systems,
6860 resulting in no battery data being returned.
6862 Added AcpiWalkResources interface to simplify parsing of resource
6865 Code and Data Size: Current core subsystem library sizes are shown
6866 below. These are the code and data sizes for the acpica.lib
6867 produced by the Microsoft Visual C++ 6.0 compiler, and these
6868 values do not include any ACPI driver or OSPM code. The debug
6869 version of the code includes the debug output trace mechanism and
6870 has a much larger code and data size. Note that these values will
6871 vary depending on the efficiency of the compiler and the compiler
6872 options used during generation.
6875 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
6876 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
6878 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
6879 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
6884 S3 fixes (Ole Rohne)
6886 Update ACPI PHP driver with to use new acpi_walk_resource API
6889 Add S4BIOS support (Pavel Machek)
6891 Map in entire table before performing checksum (John Stultz)
6893 Expand the mem= cmdline to allow the specification of reserved and
6894 ACPI DATA blocks (Pavel Machek)
6896 Never use ACPI on VISWS
6898 Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez)
6900 Revert a change that allowed P_BLK lengths to be 4 or 5. This is
6901 causing us to think that some systems support C2 when they really
6904 Do not count processor objects for non-present CPUs (Thanks to
6910 Fixed a problem where ASL include files could not be found and
6913 Added support for the _PDC reserved name.
6916 ----------------------------------------
6917 22 January 2003. Summary of changes for version 20030122.
6920 1) ACPI CA Core Subsystem:
6922 Added a check for constructs of the form: Store (Local0, Local0)
6923 where Local0 is not initialized. Apparently, some BIOS
6924 programmers believe that this is a NOOP. Since this store doesn't
6925 do anything anyway, the new prototype behavior will ignore this
6926 error. This is a case where we can relax the strict checking in
6927 the interpreter in the name of compatibility.
6932 The AcpiSrc Source Conversion Utility has been released with the
6933 Linux package for the first time. This is the utility that is
6934 used to convert the ACPI CA base source code to the Linux version.
6936 (Both) Handle P_BLK lengths shorter than 6 more gracefully
6938 (Both) Move more headers to include/acpi, and delete an unused
6941 (Both) Move drivers/acpi/include directory to include/acpi
6943 (Both) Boot functions don't use cmdline, so don't pass it around
6945 (Both) Remove include of unused header (Adrian Bunk)
6947 (Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since
6949 former now also includes the latter, acpiphp.h only needs the one,
6952 (2.5) Make it possible to select method of bios restoring after S3
6953 resume. [=> no more ugly ifdefs] (Pavel Machek)
6955 (2.5) Make proc write interfaces work (Pavel Machek)
6957 (2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski)
6959 (2.5) Break out ACPI Perf code into its own module, under cpufreq
6962 (2.4) S4BIOS support (Ducrot Bruno)
6964 (2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio
6970 Added support to disassemble SSDT and PSDTs.
6972 Implemented support to obtain SSDTs from the Windows registry if
6976 ----------------------------------------
6977 09 January 2003. Summary of changes for version 20030109.
6979 1) ACPI CA Core Subsystem:
6981 Changed the behavior of the internal Buffer-to-String conversion
6982 function. The current ACPI specification states that the contents
6983 of the buffer are "converted to a string of two-character
6984 hexadecimal numbers, each separated by a space". Unfortunately,
6985 this definition is not backwards compatible with existing ACPI 1.0
6986 implementations (although the behavior was not defined in the ACPI
6987 1.0 specification). The new behavior simply copies data from the
6988 buffer to the string until a null character is found or the end of
6989 the buffer is reached. The new String object is always null
6990 terminated. This problem was seen during the generation of _BIF
6991 battery data where incorrect strings were returned for battery
6992 type, etc. This will also require an errata to the ACPI
6995 Renamed all instances of NATIVE_UINT and NATIVE_INT to
6996 ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively.
6998 Copyright in all module headers (both Linux and non-Linux) has be
7001 Code and Data Size: Current core subsystem library sizes are shown
7002 below. These are the code and data sizes for the acpica.lib
7003 produced by the Microsoft Visual C++ 6.0 compiler, and these
7004 values do not include any ACPI driver or OSPM code. The debug
7005 version of the code includes the debug output trace mechanism and
7006 has a much larger code and data size. Note that these values will
7007 vary depending on the efficiency of the compiler and the compiler
7008 options used during generation.
7011 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
7012 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
7014 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
7015 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
7020 Fixed an oops on module insertion/removal (Matthew Tippett)
7022 (2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante)
7024 (2.5) Replace pr_debug (Randy Dunlap)
7026 (2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski)
7028 (Both) Eliminate spawning of thread from timer callback, in favor
7031 (Both) Show Lid status in /proc (Zdenek OGAR Skalak)
7033 (Both) Added define for Fixed Function HW region (Matthew Wilcox)
7035 (Both) Add missing statics to button.c (Pavel Machek)
7037 Several changes have been made to the source code translation
7038 utility that generates the Linux Code in order to make the code
7041 All typedefs on structs and unions have been removed in keeping
7042 with the Linux coding style.
7044 Removed the non-Linux SourceSafe module revision number from each
7047 Completed major overhaul of symbols to be lowercased for linux.
7048 Doubled the number of symbols that are lowercased.
7050 Fixed a problem where identifiers within procedure headers and
7051 within quotes were not fully lower cased (they were left with a
7054 Some C macros whose only purpose is to allow the generation of 16-
7055 bit code are now completely removed in the Linux code, increasing
7056 readability and maintainability.
7058 ----------------------------------------
7060 12 December 2002. Summary of changes for version 20021212.
7063 1) ACPI CA Core Subsystem:
7065 Fixed a problem where the creation of a zero-length AML Buffer
7066 would cause a fault.
7068 Fixed a problem where a Buffer object that pointed to a static AML
7069 buffer (in an ACPI table) could inadvertently be deleted, causing
7072 Fixed a problem where a user buffer (passed in to the external
7073 ACPI CA interfaces) could be overwritten if the buffer was too
7074 small to complete the operation, causing memory corruption.
7076 Fixed a problem in the Buffer-to-String conversion code where a
7077 string of length one was always returned, regardless of the size
7078 of the input Buffer object.
7080 Removed the NATIVE_CHAR data type across the entire source due to
7081 lack of need and lack of consistent use.
7083 Code and Data Size: Current core subsystem library sizes are shown
7084 below. These are the code and data sizes for the acpica.lib
7085 produced by the Microsoft Visual C++ 6.0 compiler, and these
7086 values do not include any ACPI driver or OSPM code. The debug
7087 version of the code includes the debug output trace mechanism and
7088 has a much larger code and data size. Note that these values will
7089 vary depending on the efficiency of the compiler and the compiler
7090 options used during generation.
7093 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
7094 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
7096 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
7097 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
7100 ----------------------------------------
7101 05 December 2002. Summary of changes for version 20021205.
7103 1) ACPI CA Core Subsystem:
7105 Fixed a problem where a store to a String or Buffer object could
7106 cause corruption of the DSDT if the object type being stored was
7107 the same as the target object type and the length of the object
7108 being stored was equal to or smaller than the original (existing)
7109 target object. This was seen to cause corruption of battery _BIF
7110 buffers if the _BIF method modified the buffer on the fly.
7112 Fixed a problem where an internal error was generated if a control
7113 method invocation was used in an OperationRegion, Buffer, or
7114 Package declaration. This was caused by the deferred parsing of
7115 the control method and thus the deferred creation of the internal
7116 method object. The solution to this problem was to create the
7117 internal method object at the moment the method is encountered in
7118 the first pass - so that subsequent references to the method will
7119 able to obtain the required parameter count and thus properly
7120 parse the method invocation. This problem presented itself as an
7121 AE_AML_INTERNAL during the pass 1 parse phase during table load.
7123 Fixed a problem where the internal String object copy routine did
7124 not always allocate sufficient memory for the target String object
7125 and caused memory corruption. This problem was seen to cause
7126 "Allocation already present in list!" errors as memory allocation
7129 Implemented a new function for the evaluation of namespace objects
7130 that allows the specification of the allowable return object
7131 types. This simplifies a lot of code that checks for a return
7132 object of one or more specific objects returned from the
7133 evaluation (such as _STA, etc.) This may become and external
7134 function if it would be useful to ACPI-related drivers.
7136 Completed another round of prefixing #defines with "ACPI_" for
7139 Completed additional code restructuring to allow more modular
7140 linking for iASL compiler and AcpiExec. Several files were split
7141 creating new files. New files: nsparse.c dsinit.c evgpe.c
7143 Implemented an abort mechanism to terminate an executing control
7144 method via the AML debugger. This feature is useful for debugging
7145 control methods that depend (wait) for specific hardware
7148 Code and Data Size: Current core subsystem library sizes are shown
7149 below. These are the code and data sizes for the acpica.lib
7150 produced by the Microsoft Visual C++ 6.0 compiler, and these
7151 values do not include any ACPI driver or OSPM code. The debug
7152 version of the code includes the debug output trace mechanism and
7153 has a much larger code and data size. Note that these values will
7154 vary depending on the efficiency of the compiler and the compiler
7155 options used during generation.
7158 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
7159 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
7161 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
7162 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
7165 2) iASL Compiler/Disassembler
7167 Fixed a compiler code generation problem for "Interrupt" Resource
7168 Descriptors. If specified in the ASL, the optional "Resource
7169 Source Index" and "Resource Source" fields were not inserted into
7170 the correct location within the AML resource descriptor, creating
7171 an invalid descriptor.
7173 Fixed a disassembler problem for "Interrupt" resource descriptors.
7174 The optional "Resource Source Index" and "Resource Source" fields
7178 ----------------------------------------
7179 22 November 2002. Summary of changes for version 20021122.
7182 1) ACPI CA Core Subsystem:
7184 Fixed a reported problem where an object stored to a Method Local
7185 or Arg was not copied to a new object during the store - the
7186 object pointer was simply copied to the Local/Arg. This caused
7187 all subsequent operations on the Local/Arg to also affect the
7188 original source of the store operation.
7190 Fixed a problem where a store operation to a Method Local or Arg
7191 was not completed properly if the Local/Arg contained a reference
7192 (from RefOf) to a named field. The general-purpose store-to-
7193 namespace-node code is now used so that this case is handled
7196 Fixed a problem where the internal object copy routine would cause
7197 a protection fault if the object being copied was a Package and
7198 contained either 1) a NULL package element or 2) a nested sub-
7201 Fixed a problem with the GPE initialization that resulted from an
7202 ambiguity in the ACPI specification. One section of the
7203 specification states that both the address and length of the GPE
7204 block must be zero if the block is not supported. Another section
7205 implies that only the address need be zero if the block is not
7206 supported. The code has been changed so that both the address and
7207 the length must be non-zero to indicate a valid GPE block (i.e.,
7208 if either the address or the length is zero, the GPE block is
7211 Code and Data Size: Current core subsystem library sizes are shown
7212 below. These are the code and data sizes for the acpica.lib
7213 produced by the Microsoft Visual C++ 6.0 compiler, and these
7214 values do not include any ACPI driver or OSPM code. The debug
7215 version of the code includes the debug output trace mechanism and
7216 has a much larger code and data size. Note that these values will
7217 vary depending on the efficiency of the compiler and the compiler
7218 options used during generation.
7221 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
7222 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
7224 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
7225 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
7230 Cleaned up EC driver. Exported an external EC read/write
7231 interface. By going through this, other drivers (most notably
7232 sonypi) will be able to serialize access to the EC.
7235 3) iASL Compiler/Disassembler
7237 Implemented support to optionally generate include files for both
7238 ASM and C (the -i switch). This simplifies BIOS development by
7239 automatically creating include files that contain external
7240 declarations for the symbols that are created within the
7242 (optionally generated) ASM and C AML source files.
7245 ----------------------------------------
7246 15 November 2002. Summary of changes for version 20021115.
7248 1) ACPI CA Core Subsystem:
7250 Fixed a memory leak problem where an error during resolution of
7252 method arguments during a method invocation from another method
7253 failed to cleanup properly by deleting all successfully resolved
7256 Fixed a problem where the target of the Index() operator was not
7257 correctly constructed if the source object was a package. This
7258 problem has not been detected because the use of a target operand
7259 with Index() is very rare.
7261 Fixed a problem with the Index() operator where an attempt was
7262 made to delete the operand objects twice.
7264 Fixed a problem where an attempt was made to delete an operand
7265 twice during execution of the CondRefOf() operator if the target
7268 Implemented the first of perhaps several internal create object
7269 functions that create and initialize a specific object type. This
7270 consolidates duplicated code wherever the object is created, thus
7271 shrinking the size of the subsystem.
7273 Implemented improved debug/error messages for errors that occur
7274 during nested method invocations. All executing method pathnames
7275 are displayed (with the error) as the call stack is unwound - thus
7278 Fixed a problem introduced in the 10/02 release that caused
7279 premature deletion of a buffer object if a buffer was used as an
7280 ASL operand where an integer operand is required (Thus causing an
7281 implicit object conversion from Buffer to Integer.) The change in
7282 the 10/02 release was attempting to fix a memory leak (albeit
7285 Code and Data Size: Current core subsystem library sizes are shown
7286 below. These are the code and data sizes for the acpica.lib
7287 produced by the Microsoft Visual C++ 6.0 compiler, and these
7288 values do not include any ACPI driver or OSPM code. The debug
7289 version of the code includes the debug output trace mechanism and
7290 has a much larger code and data size. Note that these values will
7291 vary depending on the efficiency of the compiler and the compiler
7292 options used during generation.
7295 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
7296 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
7298 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
7299 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
7304 Changed the implementation of the ACPI semaphores to use down()
7305 instead of down_interruptable(). It is important that the
7306 execution of ACPI control methods not be interrupted by signals.
7307 Methods must run to completion, or the system may be left in an
7308 unknown/unstable state.
7310 Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set.
7314 3) iASL Compiler/Disassembler
7317 Changed the default location of output files. All output files
7318 are now placed in the current directory by default instead of in
7319 the directory of the source file. This change may affect some
7320 existing makefiles, but it brings the behavior of the compiler in
7321 line with other similar tools. The location of the output files
7322 can be overridden with the -p command line switch.
7325 ----------------------------------------
7326 11 November 2002. Summary of changes for version 20021111.
7329 0) ACPI Specification 2.0B is released and is now available at:
7330 http://www.acpi.info/index.html
7333 1) ACPI CA Core Subsystem:
7335 Implemented support for the ACPI 2.0 SMBus Operation Regions.
7336 This includes the early detection and handoff of the request to
7337 the SMBus region handler (avoiding all of the complex field
7338 support code), and support for the bidirectional return packet
7339 from an SMBus write operation. This paves the way for the
7340 development of SMBus drivers in each host operating system.
7342 Fixed a problem where the semaphore WAIT_FOREVER constant was
7343 defined as 32 bits, but must be 16 bits according to the ACPI
7344 specification. This had the side effect of causing ASL
7345 Mutex/Event timeouts even though the ASL code requested a wait
7346 forever. Changed all internal references to the ACPI timeout
7347 parameter to 16 bits to prevent future problems. Changed the name
7348 of WAIT_FOREVER to ACPI_WAIT_FOREVER.
7350 Code and Data Size: Current core subsystem library sizes are shown
7351 below. These are the code and data sizes for the acpica.lib
7352 produced by the Microsoft Visual C++ 6.0 compiler, and these
7353 values do not include any ACPI driver or OSPM code. The debug
7354 version of the code includes the debug output trace mechanism and
7355 has a much larger code and data size. Note that these values will
7356 vary depending on the efficiency of the compiler and the compiler
7357 options used during generation.
7360 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
7361 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
7363 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
7364 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
7369 Module loading/unloading fixes (John Cagle)
7372 3) iASL Compiler/Disassembler
7374 Added support for the SMBBlockProcessCall keyword (ACPI 2.0)
7376 Implemented support for the disassembly of all SMBus protocol
7377 keywords (SMBQuick, SMBWord, etc.)
7379 ----------------------------------------
7380 01 November 2002. Summary of changes for version 20021101.
7383 1) ACPI CA Core Subsystem:
7385 Fixed a problem where platforms that have a GPE1 block but no GPE0
7386 block were not handled correctly. This resulted in a "GPE
7387 overlap" error message. GPE0 is no longer required.
7389 Removed code added in the previous release that inserted nodes
7390 into the namespace in alphabetical order. This caused some side-
7391 effects on various machines. The root cause of the problem is
7392 still under investigation since in theory, the internal ordering
7393 of the namespace nodes should not matter.
7396 Enhanced error reporting for the case where a named object is not
7397 found during control method execution. The full ACPI namepath
7398 (name reference) of the object that was not found is displayed in
7401 Note: as a result of the overhaul of the namespace object types in
7402 the previous release, the namespace nodes for the predefined
7403 scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE
7404 instead of ACPI_TYPE_ANY. This simplifies the namespace
7405 management code but may affect code that walks the namespace tree
7406 looking for specific object types.
7408 Code and Data Size: Current core subsystem library sizes are shown
7409 below. These are the code and data sizes for the acpica.lib
7410 produced by the Microsoft Visual C++ 6.0 compiler, and these
7411 values do not include any ACPI driver or OSPM code. The debug
7412 version of the code includes the debug output trace mechanism and
7413 has a much larger code and data size. Note that these values will
7414 vary depending on the efficiency of the compiler and the compiler
7415 options used during generation.
7418 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
7419 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
7421 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
7422 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
7427 Fixed a problem introduced in the previous release where the
7428 Processor and Thermal objects were not recognized and installed in
7429 /proc. This was related to the scope type change described above.
7432 3) iASL Compiler/Disassembler
7434 Implemented the -g option to get all of the required ACPI tables
7435 from the registry and save them to files (Windows version of the
7436 compiler only.) The required tables are the FADT, FACS, and DSDT.
7438 Added ACPI table checksum validation during table disassembly in
7439 order to catch corrupted tables.
7442 ----------------------------------------
7443 22 October 2002. Summary of changes for version 20021022.
7445 1) ACPI CA Core Subsystem:
7447 Implemented a restriction on the Scope operator that the target
7448 must already exist in the namespace at the time the operator is
7449 encountered (during table load or method execution). In other
7450 words, forward references are not allowed and Scope() cannot
7451 create a new object. This changes the previous behavior where the
7452 interpreter would create the name if not found. This new behavior
7453 correctly enables the search-to-root algorithm during namespace
7454 lookup of the target name. Because of this upsearch, this fixes
7455 the known Compaq _SB_.OKEC problem and makes both the AML
7456 interpreter and iASL compiler compatible with other ACPI
7459 Completed a major overhaul of the internal ACPI object types for
7460 the ACPI Namespace and the associated operand objects. Many of
7461 these types had become obsolete with the introduction of the two-
7462 pass namespace load. This cleanup simplifies the code and makes
7463 the entire namespace load mechanism much clearer and easier to
7466 Improved debug output for tracking scope opening/closing to help
7467 diagnose scoping issues. The old scope name as well as the new
7468 scope name are displayed. Also improved error messages for
7469 problems with ASL Mutex objects and error messages for GPE
7472 Cleaned up the namespace dump code, removed obsolete code.
7474 All string output (for all namespace/object dumps) now uses the
7475 common ACPI string output procedure which handles escapes properly
7476 and does not emit non-printable characters.
7478 Fixed some issues with constants in the 64-bit version of the
7479 local C library (utclib.c)
7484 EC Driver: No longer attempts to acquire the Global Lock at
7488 3) iASL Compiler/Disassembler
7490 Implemented ACPI 2.0B grammar change that disallows all Type 1 and
7491 2 opcodes outside of a control method. This means that the
7492 "executable" operators (versus the "namespace" operators) cannot
7493 be used at the table level; they can only be used within a control
7496 Implemented the restriction on the Scope() operator where the
7497 target must already exist in the namespace at the time the
7498 operator is encountered (during ASL compilation). In other words,
7499 forward references are not allowed and Scope() cannot create a new
7500 object. This makes the iASL compiler compatible with other ACPI
7501 implementations and makes the Scope() implementation adhere to the
7504 Fixed a problem where namepath optimization for the Alias operator
7505 was optimizing the wrong path (of the two namepaths.) This caused
7506 a "Missing alias link" error message.
7508 Fixed a problem where an "unknown reserved name" warning could be
7509 incorrectly generated for names like "_SB" when the trailing
7510 underscore is not used in the original ASL.
7512 Fixed a problem where the reserved name check did not handle
7513 NamePaths with multiple NameSegs correctly. The first nameseg of
7514 the NamePath was examined instead of the last NameSeg.
7517 ----------------------------------------
7519 02 October 2002. Summary of changes for this release.
7522 1) ACPI CA Core Subsystem version 20021002:
7524 Fixed a problem where a store/copy of a string to an existing
7525 string did not always set the string length properly in the String
7528 Fixed a reported problem with the ToString operator where the
7529 behavior was identical to the ToHexString operator instead of just
7530 simply converting a raw buffer to a string data type.
7532 Fixed a problem where CopyObject and the other "explicit"
7533 conversion operators were not updating the internal namespace node
7534 type as part of the store operation.
7536 Fixed a memory leak during implicit source operand conversion
7537 where the original object was not deleted if it was converted to a
7538 new object of a different type.
7540 Enhanced error messages for all problems associated with namespace
7541 lookups. Common procedure generates and prints the lookup name as
7542 well as the formatted status.
7544 Completed implementation of a new design for the Alias support
7545 within the namespace. The existing design did not handle the case
7546 where a new object was assigned to one of the two names due to the
7547 use of an explicit conversion operator, resulting in the two names
7548 pointing to two different objects. The new design simply points
7549 the Alias name to the original name node - not to the object.
7550 This results in a level of indirection that must be handled in the
7551 name resolution mechanism.
7553 Code and Data Size: Current core subsystem library sizes are shown
7554 below. These are the code and data sizes for the acpica.lib
7555 produced by the Microsoft Visual C++ 6.0 compiler, and these
7556 values do not include any ACPI driver or OSPM code. The debug
7557 version of the code includes the debug output trace mechanism and
7558 has a larger code and data size. Note that these values will vary
7559 depending on the efficiency of the compiler and the compiler
7560 options used during generation.
7563 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
7564 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
7566 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
7567 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
7572 Initialize thermal driver's timer before it is used. (Knut
7575 Allow handling negative celsius values. (Kochi Takayoshi)
7577 Fix thermal management and make trip points. R/W (Pavel Machek)
7579 Fix /proc/acpi/sleep. (P. Christeas)
7581 IA64 fixes. (David Mosberger)
7583 Fix reversed logic in blacklist code. (Sergio Monteiro Basto)
7585 Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik
7589 3) iASL Compiler/Disassembler
7591 Clarified some warning/error messages.
7594 ----------------------------------------
7595 18 September 2002. Summary of changes for this release.
7598 1) ACPI CA Core Subsystem version 20020918:
7600 Fixed a reported problem with reference chaining (via the Index()
7601 and RefOf() operators) in the ObjectType() and SizeOf() operators.
7602 The definition of these operators includes the dereferencing of
7603 all chained references to return information on the base object.
7605 Fixed a problem with stores to indexed package elements - the
7606 existing code would not complete the store if an "implicit
7607 conversion" was not performed. In other words, if the existing
7608 object (package element) was to be replaced completely, the code
7609 didn't handle this case.
7611 Relaxed typechecking on the ASL "Scope" operator to allow the
7612 target name to refer to an object of type Integer, String, or
7613 Buffer, in addition to the scoping object types (Device,
7614 predefined Scopes, Processor, PowerResource, and ThermalZone.)
7615 This allows existing AML code that has workarounds for a bug in
7616 Windows to function properly. A warning is issued, however. This
7617 affects both the AML interpreter and the iASL compiler. Below is
7618 an example of this type of ASL code:
7624 Fixed some reported problems with 64-bit integer support in the
7625 local implementation of C library functions (clib.c)
7630 Use ACPI fix map region instead of IOAPIC region, since it is
7631 undefined in non-SMP.
7633 Ensure that the SCI has the proper polarity and trigger, even on
7634 systems that do not have an interrupt override entry in the MADT.
7636 2.5 big driver reorganization (Pat Mochel)
7638 Use early table mapping code from acpitable.c (Andi Kleen)
7640 New blacklist entries (Andi Kleen)
7642 Blacklist improvements. Split blacklist code out into a separate
7643 file. Move checking the blacklist to very early. Previously, we
7644 would use ACPI tables, and then halfway through init, check the
7645 blacklist -- too late. Now, it's early enough to completely fall-
7649 3) iASL Compiler/Disassembler version 20020918:
7651 Fixed a problem where the typechecking code didn't know that an
7652 alias could point to a method. In other words, aliases were not
7653 being dereferenced during typechecking.
7656 ----------------------------------------
7657 29 August 2002. Summary of changes for this release.
7659 1) ACPI CA Core Subsystem Version 20020829:
7661 If the target of a Scope() operator already exists, it must be an
7662 object type that actually opens a scope -- such as a Device,
7663 Method, Scope, etc. This is a fatal runtime error. Similar error
7664 check has been added to the iASL compiler also.
7666 Tightened up the namespace load to disallow multiple names in the
7667 same scope. This previously was allowed if both objects were of
7668 the same type. (i.e., a lookup was the same as entering a new
7674 Ensure that the ACPI interrupt has the proper trigger and
7677 local_irq_disable is extraneous. (Matthew Wilcox)
7679 Make "acpi=off" actually do what it says, and not use the ACPI
7680 interpreter *or* the tables.
7682 Added arch-neutral support for parsing SLIT and SRAT tables (Kochi
7686 3) iASL Compiler/Disassembler Version 20020829:
7688 Implemented namepath optimization for name declarations. For
7689 example, a declaration like "Method (\_SB_.ABCD)" would get
7690 optimized to "Method (ABCD)" if the declaration is within the
7691 \_SB_ scope. This optimization is in addition to the named
7692 reference path optimization first released in the previous
7693 version. This would seem to complete all possible optimizations
7694 for namepaths within the ASL/AML.
7696 If the target of a Scope() operator already exists, it must be an
7697 object type that actually opens a scope -- such as a Device,
7700 Implemented a check and warning for unreachable code in the same
7701 block below a Return() statement.
7703 Fixed a problem where the listing file was not generated if the
7704 compiler aborted if the maximum error count was exceeded (200).
7706 Fixed a problem where the typechecking of method return values was
7707 broken. This includes the check for a return value when the
7708 method is invoked as a TermArg (a return value is expected.)
7710 Fixed a reported problem where EOF conditions during a quoted
7711 string or comment caused a fault.
7714 ----------------------------------------
7715 15 August 2002. Summary of changes for this release.
7717 1) ACPI CA Core Subsystem Version 20020815:
7719 Fixed a reported problem where a Store to a method argument that
7720 contains a reference did not perform the indirect store correctly.
7721 This problem was created during the conversion to the new
7722 reference object model - the indirect store to a method argument
7723 code was not updated to reflect the new model.
7725 Reworked the ACPI mode change code to better conform to ACPI 2.0,
7726 handle corner cases, and improve code legibility (Kochi Takayoshi)
7728 Fixed a problem with the pathname parsing for the carat (^)
7729 prefix. The heavy use of the carat operator by the new namepath
7730 optimization in the iASL compiler uncovered a problem with the AML
7731 interpreter handling of this prefix. In the case where one or
7732 more carats precede a single nameseg, the nameseg was treated as
7733 standalone and the search rule (to root) was inadvertently
7734 applied. This could cause both the iASL compiler and the
7735 interpreter to find the wrong object or to miss the error that
7736 should occur if the object does not exist at that exact pathname.
7738 Found and fixed the problem where the HP Pavilion DSDT would not
7739 load. This was a relatively minor tweak to the table loading code
7740 (a problem caused by the unexpected encounter with a method
7741 invocation not within a control method), but it does not solve the
7742 overall issue of the execution of AML code at the table level.
7743 This investigation is still ongoing.
7745 Code and Data Size: Current core subsystem library sizes are shown
7746 below. These are the code and data sizes for the acpica.lib
7747 produced by the Microsoft Visual C++ 6.0 compiler, and these
7748 values do not include any ACPI driver or OSPM code. The debug
7749 version of the code includes the debug output trace mechanism and
7750 has a larger code and data size. Note that these values will vary
7751 depending on the efficiency of the compiler and the compiler
7752 options used during generation.
7755 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
7756 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
7758 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
7759 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
7764 Remove redundant slab.h include (Brad Hards)
7766 Fix several bugs in thermal.c (Herbert Nachtnebel)
7768 Make CONFIG_ACPI_BOOT work properly (Pavel Machek)
7770 Change acpi_system_suspend to use updated irq functions (Pavel
7773 Export acpi_get_firmware_table (Matthew Wilcox)
7775 Use proper root proc entry for ACPI (Kochi Takayoshi)
7777 Fix early-boot table parsing (Bjorn Helgaas)
7780 3) iASL Compiler/Disassembler
7782 Reworked the compiler options to make them more consistent and to
7783 use two-letter options where appropriate. We were running out of
7784 sensible letters. This may break some makefiles, so check the
7785 current options list by invoking the compiler with no parameters.
7787 Completed the design and implementation of the ASL namepath
7788 optimization option for the compiler. This option optimizes all
7789 references to named objects to the shortest possible path. The
7790 first attempt tries to utilize a single nameseg (4 characters) and
7791 the "search-to-root" algorithm used by the interpreter. If that
7792 cannot be used (because either the name is not in the search path
7793 or there is a conflict with another object with the same name),
7794 the pathname is optimized using the carat prefix (usually a
7795 shorter string than specifying the entire path from the root.)
7797 Implemented support to obtain the DSDT from the Windows registry
7798 (when the disassembly option is specified with no input file).
7799 Added this code as the implementation for AcpiOsTableOverride in
7800 the Windows OSL. Migrated the 16-bit code (used in the AcpiDump
7801 utility) to scan memory for the DSDT to the AcpiOsTableOverride
7802 function in the DOS OSL to make the disassembler truly OS
7805 Implemented a new option to disassemble and compile in one step.
7806 When used without an input filename, this option will grab the
7807 DSDT from the local machine, disassemble it, and compile it in one
7810 Added a warning message for invalid escapes (a backslash followed
7811 by any character other than the allowable escapes). This catches
7812 the quoted string error "\_SB_" (which should be "\\_SB_" ).
7814 Also, there are numerous instances in the ACPI specification where
7817 Added a compiler option to disable all optimizations. This is
7818 basically the "compatibility mode" because by using this option,
7819 the AML code will come out exactly the same as other ASL
7822 Added error messages for incorrectly ordered dependent resource
7823 functions. This includes: missing EndDependentFn macro at end of
7824 dependent resource list, nested dependent function macros (both
7825 start and end), and missing StartDependentFn macro. These are
7826 common errors that should be caught at compile time.
7828 Implemented _OSI support for the disassembler and compiler. _OSI
7829 must be included in the namespace for proper disassembly (because
7830 the disassembler must know the number of arguments.)
7832 Added an "optimization" message type that is optional (off by
7833 default). This message is used for all optimizations - including
7834 constant folding, integer optimization, and namepath optimization.
7836 ----------------------------------------
7837 25 July 2002. Summary of changes for this release.
7840 1) ACPI CA Core Subsystem Version 20020725:
7842 The AML Disassembler has been enhanced to produce compilable ASL
7843 code and has been integrated into the iASL compiler (see below) as
7844 well as the single-step disassembly for the AML debugger and the
7845 disassembler for the AcpiDump utility. All ACPI 2.0A opcodes,
7846 resource templates and macros are fully supported. The
7847 disassembler has been tested on over 30 different AML files,
7848 producing identical AML when the resulting disassembled ASL file
7849 is recompiled with the same ASL compiler.
7851 Modified the Resource Manager to allow zero interrupts and zero
7852 dma channels during the GetCurrentResources call. This was
7853 causing problems on some platforms.
7855 Added the AcpiOsRedirectOutput interface to the OSL to simplify
7856 output redirection for the AcpiOsPrintf and AcpiOsVprintf
7859 Code and Data Size: Current core subsystem library sizes are shown
7860 below. These are the code and data sizes for the acpica.lib
7861 produced by the Microsoft Visual C++ 6.0 compiler, and these
7862 values do not include any ACPI driver or OSPM code. The debug
7863 version of the code includes the debug output trace mechanism and
7864 has a larger code and data size. Note that these values will vary
7865 depending on the efficiency of the compiler and the compiler
7866 options used during generation.
7869 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
7870 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
7872 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
7873 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
7878 Fixed a panic in the EC driver (Dominik Brodowski)
7880 Implemented checksum of the R/XSDT itself during Linux table scan
7886 The AML disassembler is integrated into the compiler. The "-d"
7887 option invokes the disassembler to completely disassemble an
7888 input AML file, producing as output a text ASL file with the
7889 extension ".dsl" (to avoid name collisions with existing .asl
7890 source files.) A future enhancement will allow the disassembler
7891 to obtain the BIOS DSDT from the registry under Windows.
7893 Fixed a problem with the VendorShort and VendorLong resource
7894 descriptors where an invalid AML sequence was created.
7896 Implemented a fix for BufferData term in the ASL parser. It was
7897 inadvertently defined twice, allowing invalid syntax to pass and
7898 causing reduction conflicts.
7900 Fixed a problem where the Ones opcode could get converted to a
7901 value of zero if "Ones" was used where a byte, word or dword value
7902 was expected. The 64-bit value is now truncated to the correct
7903 size with the correct value.
7907 ----------------------------------------
7908 02 July 2002. Summary of changes for this release.
7911 1) ACPI CA Core Subsystem Version 20020702:
7913 The Table Manager code has been restructured to add several new
7914 features. Tables that are not required by the core subsystem
7915 (other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer
7916 validated in any way and are returned from AcpiGetFirmwareTable if
7917 requested. The AcpiOsTableOverride interface is now called for
7918 each table that is loaded by the subsystem in order to allow the
7919 host to override any table it chooses. Previously, only the DSDT
7920 could be overridden. Added one new files, tbrsdt.c and
7923 Fixed a problem with the conversion of internal package objects to
7924 external objects (when a package is returned from a control
7925 method.) The return buffer length was set to zero instead of the
7926 proper length of the package object.
7928 Fixed a reported problem with the use of the RefOf and DeRefOf
7929 operators when passing reference arguments to control methods. A
7930 new type of Reference object is used internally for references
7931 produced by the RefOf operator.
7933 Added additional error messages in the Resource Manager to explain
7934 AE_BAD_DATA errors when they occur during resource parsing.
7936 Split the AcpiEnableSubsystem into two primitives to enable a
7937 finer granularity initialization sequence. These two calls should
7938 be called in this order: AcpiEnableSubsystem (flags),
7939 AcpiInitializeObjects (flags). The flags parameter remains the
7945 Updated the ACPI utilities module to understand the new style of
7946 fully resolved package objects that are now returned from the core
7947 subsystem. This eliminates errors of the form:
7949 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT]
7950 acpi_utils-0430 [145] acpi_evaluate_reference:
7951 Invalid element in package (not a device reference)
7953 The method evaluation utility uses the new buffer allocation
7954 scheme instead of calling AcpiEvaluate Object twice.
7956 Added support for ECDT. This allows the use of the Embedded
7958 Controller before the namespace has been fully initialized, which
7959 is necessary for ACPI 2.0 support, and for some laptops to
7960 initialize properly. (Laptops using ECDT are still rare, so only
7961 limited testing was performed of the added functionality.)
7963 Fixed memory leaks in the EC driver.
7965 Eliminated a brittle code structure in acpi_bus_init().
7967 Eliminated the acpi_evaluate() helper function in utils.c. It is
7968 no longer needed since acpi_evaluate_object can optionally
7969 allocate memory for the return object.
7971 Implemented fix for keyboard hang when getting battery readings on
7972 some systems (Stephen White)
7974 PCI IRQ routing update (Dominik Brodowski)
7976 Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC
7979 ----------------------------------------
7980 11 June 2002. Summary of changes for this release.
7983 1) ACPI CA Core Subsystem Version 20020611:
7985 Fixed a reported problem where constants such as Zero and One
7986 appearing within _PRT packages were not handled correctly within
7987 the resource manager code. Originally reported against the ASL
7988 compiler because the code generator now optimizes integers to
7989 their minimal AML representation (i.e. AML constants if possible.)
7990 The _PRT code now handles all AML constant opcodes correctly
7991 (Zero, One, Ones, Revision).
7993 Fixed a problem with the Concatenate operator in the AML
7994 interpreter where a buffer result object was incorrectly marked as
7995 not fully evaluated, causing a run-time error of AE_AML_INTERNAL.
7997 All package sub-objects are now fully resolved before they are
7998 returned from the external ACPI interfaces. This means that name
7999 strings are resolved to object handles, and constant operators
8000 (Zero, One, Ones, Revision) are resolved to Integers.
8002 Implemented immediate resolution of the AML Constant opcodes
8003 (Zero, One, Ones, Revision) to Integer objects upon detection
8004 within the AML stream. This has simplified and reduced the
8005 generated code size of the subsystem by eliminating about 10
8006 switch statements for these constants (which previously were
8007 contained in Reference objects.) The complicating issues are that
8008 the Zero opcode is used as a "placeholder" for unspecified
8009 optional target operands and stores to constants are defined to be
8012 Code and Data Size: Current core subsystem library sizes are shown
8013 below. These are the code and data sizes for the acpica.lib
8014 produced by the Microsoft Visual C++ 6.0 compiler, and these
8015 values do not include any ACPI driver or OSPM code. The debug
8016 version of the code includes the debug output trace mechanism and
8017 has a larger code and data size. Note that these values will vary
8018 depending on the efficiency of the compiler and the compiler
8019 options used during generation.
8022 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
8023 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
8025 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
8026 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
8032 Added preliminary support for obtaining _TRA data for PCI root
8033 bridges (Bjorn Helgaas).
8036 3) iASL Compiler Version X2046:
8038 Fixed a problem where the "_DDN" reserved name was defined to be a
8039 control method with one argument. There are no arguments, and
8040 _DDN does not have to be a control method.
8042 Fixed a problem with the Linux version of the compiler where the
8043 source lines printed with error messages were the wrong lines.
8044 This turned out to be the "LF versus CR/LF" difference between
8045 Windows and Unix. This appears to be the longstanding issue
8046 concerning listing output and error messages.
8048 Fixed a problem with the Linux version of compiler where opcode
8049 names within error messages were wrong. This was caused by a
8050 slight difference in the output of the Flex tool on Linux versus
8053 Fixed a problem with the Linux compiler where the hex output files
8054 contained some garbage data caused by an internal buffer overrun.
8057 ----------------------------------------
8058 17 May 2002. Summary of changes for this release.
8061 1) ACPI CA Core Subsystem Version 20020517:
8063 Implemented a workaround to an BIOS bug discovered on the HP
8064 OmniBook where the FADT revision number and the table size are
8065 inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new
8066 behavior is to fallback to using only the ACPI 1.0 fields of the
8067 FADT if the table is too small to be a ACPI 2.0 table as claimed
8068 by the revision number. Although this is a BIOS bug, this is a
8069 case where the workaround is simple enough and with no side
8070 effects, so it seemed prudent to add it. A warning message is
8073 Implemented minimum size checks for the fixed-length ACPI tables -
8074 - the FADT and FACS, as well as consistency checks between the
8075 revision number and the table size.
8077 Fixed a reported problem in the table override support where the
8078 new table pointer was incorrectly treated as a physical address
8079 instead of a logical address.
8081 Eliminated the use of the AE_AML_ERROR exception and replaced it
8082 with more descriptive codes.
8084 Fixed a problem where an exception would occur if an ASL Field was
8085 defined with no named Field Units underneath it (used by some
8088 Code and Data Size: Current core subsystem library sizes are shown
8089 below. These are the code and data sizes for the acpica.lib
8090 produced by the Microsoft Visual C++ 6.0 compiler, and these
8091 values do not include any ACPI driver or OSPM code. The debug
8092 version of the code includes the debug output trace mechanism and
8093 has a larger code and data size. Note that these values will vary
8094 depending on the efficiency of the compiler and the compiler
8095 options used during generation.
8098 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
8099 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
8101 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
8102 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
8108 Much work done on ACPI init (MADT and PCI IRQ routing support).
8109 (Paul D. and Dominik Brodowski)
8111 Fix PCI IRQ-related panic on boot (Sam Revitch)
8113 Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno)
8115 Fix "MHz" typo (Dominik Brodowski)
8117 Fix RTC year 2000 issue (Dominik Brodowski)
8119 Preclude multiple button proc entries (Eric Brunet)
8121 Moved arch-specific code out of include/platform/aclinux.h
8123 3) iASL Compiler Version X2044:
8125 Implemented error checking for the string used in the EISAID macro
8126 (Usually used in the definition of the _HID object.) The code now
8127 strictly enforces the PnP format - exactly 7 characters, 3
8128 uppercase letters and 4 hex digits.
8130 If a raw string is used in the definition of the _HID object
8131 (instead of the EISAID macro), the string must contain all
8132 alphanumeric characters (e.g., "*PNP0011" is not allowed because
8135 Implemented checking for invalid use of ACPI reserved names for
8136 most of the name creation operators (Name, Device, Event, Mutex,
8137 OperationRegion, PowerResource, Processor, and ThermalZone.)
8138 Previously, this check was only performed for control methods.
8140 Implemented an additional check on the Name operator to emit an
8141 error if a reserved name that must be implemented in ASL as a
8142 control method is used. We know that a reserved name must be a
8143 method if it is defined with input arguments.
8145 The warning emitted when a namespace object reference is not found
8146 during the cross reference phase has been changed into an error.
8147 The "External" directive should be used for names defined in other
8151 4) Tools and Utilities
8153 The 16-bit tools (adump16 and aexec16) have been regenerated and
8156 Fixed a problem with the output of both acpidump and adump16 where
8157 the indentation of closing parentheses and brackets was not
8159 aligned properly with the parent block.
8162 ----------------------------------------
8163 03 May 2002. Summary of changes for this release.
8166 1) ACPI CA Core Subsystem Version 20020503:
8168 Added support a new OSL interface that allows the host operating
8170 system software to override the DSDT found in the firmware -
8171 AcpiOsTableOverride. With this interface, the OSL can examine the
8172 version of the firmware DSDT and replace it with a different one
8175 Added new external interfaces for accessing ACPI registers from
8176 device drivers and other system software - AcpiGetRegister and
8177 AcpiSetRegister. This was simply an externalization of the
8178 existing AcpiHwBitRegister interfaces.
8180 Fixed a regression introduced in the previous build where the
8181 ASL/AML CreateField operator always returned an error,
8182 "destination must be a NS Node".
8184 Extended the maximum time (before failure) to successfully enable
8185 ACPI mode to 3 seconds.
8187 Code and Data Size: Current core subsystem library sizes are shown
8188 below. These are the code and data sizes for the acpica.lib
8189 produced by the Microsoft Visual C++ 6.0 compiler, and these
8190 values do not include any ACPI driver or OSPM code. The debug
8191 version of the code includes the debug output trace mechanism and
8192 has a larger code and data size. Note that these values will vary
8193 depending on the efficiency of the compiler and the compiler
8194 options used during generation.
8197 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
8198 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
8200 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
8201 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
8206 Enhanced ACPI init code for SMP. We are now fully MPS and $PIR-
8207 free. While 3 out of 4 of our in-house systems work fine, the last
8208 one still hangs when testing the LAPIC timer.
8210 Renamed many files in 2.5 kernel release to omit "acpi_" from the
8213 Added warning on boot for Presario 711FR.
8215 Sleep improvements (Pavel Machek)
8217 ACPI can now be built without CONFIG_PCI enabled.
8219 IA64: Fixed memory map functions (JI Lee)
8222 3) iASL Compiler Version X2043:
8224 Added support to allow the compiler to be integrated into the MS
8225 VC++ development environment for one-button compilation of single
8226 files or entire projects -- with error-to-source-line mapping.
8228 Implemented support for compile-time constant folding for the
8229 Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0
8230 specification. This allows the ASL writer to use expressions
8231 instead of Integer/Buffer/String constants in terms that must
8232 evaluate to constants at compile time and will also simplify the
8233 emitted AML in any such sub-expressions that can be folded
8234 (evaluated at compile-time.) This increases the size of the
8235 compiler significantly because a portion of the ACPI CA AML
8236 interpreter is included within the compiler in order to pre-
8237 evaluate constant expressions.
8240 Fixed a problem with the "Unicode" ASL macro that caused the
8241 compiler to fault. (This macro is used in conjunction with the
8242 _STR reserved name.)
8244 Implemented an AML opcode optimization to use the Zero, One, and
8245 Ones opcodes where possible to further reduce the size of integer
8246 constants and thus reduce the overall size of the generated AML
8249 Implemented error checking for new reserved terms for ACPI version
8252 Implemented the -qr option to display the current list of ACPI
8253 reserved names known to the compiler.
8255 Implemented the -qc option to display the current list of ASL
8256 operators that are allowed within constant expressions and can
8257 therefore be folded at compile time if the operands are constants.
8262 Updated the Programmer's Reference for new interfaces, data types,
8263 and memory allocation model options.
8265 Updated the iASL Compiler User Reference to apply new format and
8266 add information about new features and options.
8268 ----------------------------------------
8269 19 April 2002. Summary of changes for this release.
8271 1) ACPI CA Core Subsystem Version 20020419:
8273 The source code base for the Core Subsystem has been completely
8274 cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit
8275 versions. The Lint option files used are included in the
8276 /acpi/generate/lint directory.
8278 Implemented enhanced status/error checking across the entire
8279 Hardware manager subsystem. Any hardware errors (reported from
8280 the OSL) are now bubbled up and will abort a running control
8284 Fixed a problem where the per-ACPI-table integer width (32 or 64)
8285 was stored only with control method nodes, causing a fault when
8286 non-control method code was executed during table loading. The
8287 solution implemented uses a global variable to indicate table
8288 width across the entire ACPI subsystem. Therefore, ACPI CA does
8289 not support mixed integer widths across different ACPI tables
8292 Fixed a problem where NULL extended fields (X fields) in an ACPI
8293 2.0 ACPI FADT caused the table load to fail. Although the
8294 existing ACPI specification is a bit fuzzy on this topic, the new
8295 behavior is to fall back on a ACPI 1.0 field if the corresponding
8296 ACPI 2.0 X field is zero (even though the table revision indicates
8297 a full ACPI 2.0 table.) The ACPI specification will be updated to
8300 Fixed a problem with the SystemMemory operation region handler
8301 where memory was always accessed byte-wise even if the AML-
8302 specified access width was larger than a byte. This caused
8303 problems on systems with memory-mapped I/O. Memory is now
8304 accessed with the width specified. On systems that do not support
8305 non-aligned transfers, a check is made to guarantee proper address
8306 alignment before proceeding in order to avoid an AML-caused
8307 alignment fault within the kernel.
8310 Fixed a problem with the ExtendedIrq resource where only one byte
8311 of the 4-byte Irq field was extracted.
8313 Fixed the AcpiExDigitsNeeded() procedure to support _UID. This
8314 function was out of date and required a rewrite.
8316 Code and Data Size: Current core subsystem library sizes are shown
8317 below. These are the code and data sizes for the acpica.lib
8318 produced by the Microsoft Visual C++ 6.0 compiler, and these
8319 values do not include any ACPI driver or OSPM code. The debug
8320 version of the code includes the debug output trace mechanism and
8321 has a larger code and data size. Note that these values will vary
8322 depending on the efficiency of the compiler and the compiler
8323 options used during generation.
8326 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
8327 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
8329 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
8330 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
8335 PCI IRQ routing fixes (Dominik Brodowski)
8338 3) iASL Compiler Version X2042:
8340 Implemented an additional compile-time error check for a field
8341 unit whose size + minimum access width would cause a run-time
8342 access beyond the end-of-region. Previously, only the field size
8345 The Core subsystem and iASL compiler now share a common parse
8346 object in preparation for compile-time evaluation of the type
8347 3/4/5 ASL operators.
8350 ----------------------------------------
8351 Summary of changes for this release: 03_29_02
8353 1) ACPI CA Core Subsystem Version 20020329:
8355 Implemented support for late evaluation of TermArg operands to
8356 Buffer and Package objects. This allows complex expressions to be
8357 used in the declarations of these object types.
8359 Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI
8360 1.0, if the field was larger than 32 bits, it was returned as a
8361 buffer - otherwise it was returned as an integer. In ACPI 2.0,
8362 the field is returned as a buffer only if the field is larger than
8363 64 bits. The TableRevision is now considered when making this
8364 conversion to avoid incompatibility with existing ASL code.
8366 Implemented logical addressing for AcpiOsGetRootPointer. This
8367 allows an RSDP with either a logical or physical address. With
8368 this support, the host OS can now override all ACPI tables with
8369 one logical RSDP. Includes implementation of "typed" pointer
8370 support to allow a common data type for both physical and logical
8371 pointers internally. This required a change to the
8372 AcpiOsGetRootPointer interface.
8374 Implemented the use of ACPI 2.0 Generic Address Structures for all
8375 GPE, Fixed Event, and PM Timer I/O. This allows the use of memory
8376 mapped I/O for these ACPI features.
8378 Initialization now ignores not only non-required tables (All
8379 tables other than the FADT, FACS, DSDT, and SSDTs), but also does
8380 not validate the table headers of unrecognized tables.
8382 Fixed a problem where a notify handler could only be
8383 installed/removed on an object of type Device. All "notify"
8385 objects are now supported -- Devices, Processor, Power, and
8388 Removed most verbosity from the ACPI_DB_INFO debug level. Only
8389 critical information is returned when this debug level is enabled.
8391 Code and Data Size: Current core subsystem library sizes are shown
8392 below. These are the code and data sizes for the acpica.lib
8393 produced by the Microsoft Visual C++ 6.0 compiler, and these
8394 values do not include any ACPI driver or OSPM code. The debug
8395 version of the code includes the debug output trace mechanism and
8396 has a larger code and data size. Note that these values will vary
8397 depending on the efficiency of the compiler and the compiler
8398 options used during generation.
8401 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
8402 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
8404 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
8405 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
8410 The processor driver (acpi_processor.c) now fully supports ACPI
8411 2.0-based processor performance control (e.g. Intel(R)
8412 SpeedStep(TM) technology) Note that older laptops that only have
8413 the Intel "applet" interface are not supported through this. The
8414 'limit' and 'performance' interface (/proc) are fully functional.
8415 [Note that basic policy for controlling performance state
8416 transitions will be included in the next version of ospmd.] The
8417 idle handler was modified to more aggressively use C2, and PIIX4
8418 errata handling underwent a complete overhaul (big thanks to
8421 Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR-
8422 based devices in the ACPI namespace are now dynamically bound
8423 (associated) with their PCI counterparts (e.g. PCI1->01:00.0).
8424 This allows, among other things, ACPI to resolve bus numbers for
8425 subordinate PCI bridges.
8427 Enhanced PCI IRQ routing to get the proper bus number for _PRT
8428 entries defined underneath PCI bridges.
8430 Added IBM 600E to bad bios list due to invalid _ADR value for
8431 PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing.
8433 In the process of adding full MADT support (e.g. IOAPIC) for IA32
8434 (acpi.c, mpparse.c) -- stay tuned.
8436 Added back visual differentiation between fixed-feature and
8437 control-method buttons in dmesg. Buttons are also subtyped (e.g.
8438 button/power/PWRF) to simplify button identification.
8440 We no longer use -Wno-unused when compiling debug. Please ignore
8441 any "_THIS_MODULE defined but not used" messages.
8443 Can now shut down the system using "magic sysrq" key.
8446 3) iASL Compiler version 2041:
8448 Fixed a problem where conversion errors for hex/octal/decimal
8449 constants were not reported.
8451 Implemented a fix for the General Register template Address field.
8452 This field was 8 bits when it should be 64.
8454 Fixed a problem where errors/warnings were no longer being emitted
8455 within the listing output file.
8457 Implemented the ACPI 2.0A restriction on ACPI Table Signatures to
8458 exactly 4 characters, alphanumeric only.
8463 ----------------------------------------
8464 Summary of changes for this release: 03_08_02
8467 1) ACPI CA Core Subsystem Version 20020308:
8469 Fixed a problem with AML Fields where the use of the "AccessAny"
8470 keyword could cause an interpreter error due to attempting to read
8471 or write beyond the end of the parent Operation Region.
8473 Fixed a problem in the SystemMemory Operation Region handler where
8474 an attempt was made to map memory beyond the end of the region.
8475 This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY"
8476 errors on some Linux systems.
8478 Fixed a problem where the interpreter/namespace "search to root"
8479 algorithm was not functioning for some object types. Relaxed the
8480 internal restriction on the search to allow upsearches for all
8481 external object types as well as most internal types.
8486 We now use safe_halt() macro versus individual calls to sti | hlt.
8488 Writing to the processor limit interface should now work. "echo 1"
8489 will increase the limit, 2 will decrease, and 0 will reset to the
8496 Fixed segfault on Linux version.
8499 ----------------------------------------
8500 Summary of changes for this release: 02_25_02
8502 1) ACPI CA Core Subsystem:
8505 Fixed a problem where the GPE bit masks were not initialized
8506 properly, causing erratic GPE behavior.
8508 Implemented limited support for multiple calling conventions. The
8509 code can be generated with either the VPL (variable parameter
8510 list, or "C") convention, or the FPL (fixed parameter list, or
8511 "Pascal") convention. The core subsystem is about 3.4% smaller
8512 when generated with FPL.
8517 Re-add some /proc/acpi/event functionality that was lost during
8520 Resolved issue with /proc events for fixed-feature buttons showing
8521 up as the system device.
8523 Fixed checks on C2/C3 latencies to be inclusive of maximum values.
8525 Replaced AE_ERRORs in acpi_osl.c with more specific error codes.
8527 Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi"
8529 Fixed limit interface & usage to fix bugs with passive cooling
8532 Restructured PRT support.
8535 ----------------------------------------
8536 Summary of changes for this label: 02_14_02
8539 1) ACPI CA Core Subsystem:
8541 Implemented support in AcpiLoadTable to allow loading of FACS and
8544 Suport for the now-obsolete interim 0.71 64-bit ACPI tables has
8545 been removed. All 64-bit platforms should be migrated to the ACPI
8546 2.0 tables. The actbl71.h header has been removed from the source
8549 All C macros defined within the subsystem have been prefixed with
8550 "ACPI_" to avoid collision with other system include files.
8552 Removed the return value for the two AcpiOsPrint interfaces, since
8553 it is never used and causes lint warnings for ignoring the return
8556 Added error checking to all internal mutex acquire and release
8557 calls. Although a failure from one of these interfaces is
8558 probably a fatal system error, these checks will cause the
8559 immediate abort of the currently executing method or interface.
8561 Fixed a problem where the AcpiSetCurrentResources interface could
8562 fault. This was a side effect of the deployment of the new memory
8565 Fixed a couple of problems with the Global Lock support introduced
8566 in the last major build. The "common" (1.0/2.0) internal FACS was
8567 being overwritten with the FACS signature and clobbering the
8568 Global Lock pointer. Also, the actual firmware FACS was being
8569 unmapped after construction of the "common" FACS, preventing
8570 access to the actual Global Lock field within it. The "common"
8571 internal FACS is no longer installed as an actual ACPI table; it
8572 is used simply as a global.
8574 Code and Data Size: Current core subsystem library sizes are shown
8575 below. These are the code and data sizes for the acpica.lib
8576 produced by the Microsoft Visual C++ 6.0 compiler, and these
8577 values do not include any ACPI driver or OSPM code. The debug
8578 version of the code includes the debug output trace mechanism and
8579 has a larger code and data size. Note that these values will vary
8580 depending on the efficiency of the compiler and the compiler
8581 options used during generation.
8583 Previous Release (02_07_01)
8584 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
8585 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
8587 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
8588 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
8593 Updated Linux-specific code for core macro and OSL interface
8594 changes described above.
8596 Improved /proc/acpi/event. It now can be opened only once and has
8597 proper poll functionality.
8599 Fixed and restructured power management (acpi_bus).
8601 Only create /proc "view by type" when devices of that class exist.
8603 Fixed "charging/discharging" bug (and others) in acpi_battery.
8605 Improved thermal zone code.
8608 3) ASL Compiler, version X2039:
8611 Implemented the new compiler restriction on ASL String hex/octal
8612 escapes to non-null, ASCII values. An error results if an invalid
8613 value is used. (This will require an ACPI 2.0 specification
8616 AML object labels that are output to the optional C and ASM source
8617 are now prefixed with both the ACPI table signature and table ID
8618 to help guarantee uniqueness within a large BIOS project.
8621 ----------------------------------------
8622 Summary of changes for this label: 02_01_02
8624 1) ACPI CA Core Subsystem:
8626 ACPI 2.0 support is complete in the entire Core Subsystem and the
8627 ASL compiler. All new ACPI 2.0 operators are implemented and all
8628 other changes for ACPI 2.0 support are complete. With
8629 simultaneous code and data optimizations throughout the subsystem,
8630 ACPI 2.0 support has been implemented with almost no additional
8631 cost in terms of code and data size.
8633 Implemented a new mechanism for allocation of return buffers. If
8634 the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will
8635 be allocated on behalf of the caller. Consolidated all return
8636 buffer validation and allocation to a common procedure. Return
8637 buffers will be allocated via the primary OSL allocation interface
8638 since it appears that a separate pool is not needed by most users.
8639 If a separate pool is required for these buffers, the caller can
8640 still use the original mechanism and pre-allocate the buffer(s).
8642 Implemented support for string operands within the DerefOf
8645 Restructured the Hardware and Event managers to be table driven,
8646 simplifying the source code and reducing the amount of generated
8649 Split the common read/write low-level ACPI register bitfield
8650 procedure into a separate read and write, simplifying the code
8653 Obsoleted the AcpiOsCallocate OSL interface. This interface was
8654 used only a handful of times and didn't have enough critical mass
8655 for a separate interface. Replaced with a common calloc procedure
8658 Fixed a reported problem with the GPE number mapping mechanism
8659 that allows GPE1 numbers to be non-contiguous with GPE0.
8660 Reorganized the GPE information and shrunk a large array that was
8661 originally large enough to hold info for all possible GPEs (256)
8662 to simply large enough to hold all GPEs up to the largest GPE
8663 number on the machine.
8665 Fixed a reported problem with resource structure alignment on 64-
8668 Changed the AcpiEnableEvent and AcpiDisableEvent external
8669 interfaces to not require any flags for the common case of
8670 enabling/disabling a GPE.
8672 Implemented support to allow a "Notify" on a Processor object.
8674 Most TBDs in comments within the source code have been resolved
8678 Fixed a problem in the interpreter where a standalone parent
8679 prefix (^) was not handled correctly in the interpreter and
8682 Removed obsolete and unnecessary GPE save/restore code.
8684 Implemented Field support in the ASL Load operator. This allows a
8685 table to be loaded from a named field, in addition to loading a
8686 table directly from an Operation Region.
8688 Implemented timeout and handle support in the external Global Lock
8691 Fixed a problem in the AcpiDump utility where pathnames were no
8692 longer being generated correctly during the dump of named objects.
8694 Modified the AML debugger to give a full display of if/while
8695 predicates instead of just one AML opcode at a time. (The
8696 predicate can have several nested ASL statements.) The old method
8697 was confusing during single stepping.
8699 Code and Data Size: Current core subsystem library sizes are shown
8700 below. These are the code and data sizes for the acpica.lib
8701 produced by the Microsoft Visual C++ 6.0 compiler, and these
8702 values do not include any ACPI driver or OSPM code. The debug
8703 version of the code includes the debug output trace mechanism and
8704 has a larger code and data size. Note that these values will vary
8705 depending on the efficiency of the compiler and the compiler
8706 options used during generation.
8708 Previous Release (12_18_01)
8709 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
8710 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
8712 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
8713 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
8717 Implemented fix for PIIX reverse throttling errata (Processor
8720 Added new Limit interface (Processor and Thermal drivers)
8722 New thermal policy (Thermal driver)
8724 Many updates to /proc
8726 Battery "low" event support (Battery driver)
8728 Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers)
8730 IA32 - IA64 initialization unification, no longer experimental
8732 Menuconfig options redesigned
8734 3) ASL Compiler, version X2037:
8736 Implemented several new output features to simplify integration of
8737 AML code into firmware: 1) Output the AML in C source code with
8738 labels for each named ASL object. The original ASL source code
8739 is interleaved as C comments. 2) Output the AML in ASM source code
8740 with labels and interleaved ASL source. 3) Output the AML in
8741 raw hex table form, in either C or ASM.
8743 Implemented support for optional string parameters to the
8746 Completed support for embedded escape sequences within string
8747 literals. The compiler now supports all single character escapes
8748 as well as the Octal and Hex escapes. Note: the insertion of a
8749 null byte into a string literal (via the hex/octal escape) causes
8750 the string to be immediately terminated. A warning is issued.
8752 Fixed a problem where incorrect AML was generated for the case
8753 where an ASL namepath consists of a single parent prefix (
8755 ) with no trailing name segments.
8757 The compiler has been successfully generated with a 64-bit C
8763 ----------------------------------------
8764 Summary of changes for this label: 12_18_01
8768 Enhanced blacklist with reason and severity fields. Any table's
8769 signature may now be used to identify a blacklisted system.
8771 Call _PIC control method to inform the firmware which interrupt
8772 model the OS is using. Turn on any disabled link devices.
8774 Cleaned up busmgr /proc error handling (Andreas Dilger)
8776 2) ACPI CA Core Subsystem:
8778 Implemented ACPI 2.0 semantics for the "Break" operator (Exit from
8781 Completed implementation of the ACPI 2.0 "Continue",
8782 "ConcatenateResTemplate", "DataTableRegion", and "LoadTable"
8783 operators. All new ACPI 2.0 operators are now implemented in both
8784 the ASL compiler and the AML interpreter. The only remaining ACPI
8785 2.0 task is support for the String data type in the DerefOf
8786 operator. Fixed a problem with AcquireMutex where the status code
8787 was lost if the caller had to actually wait for the mutex.
8789 Increased the maximum ASL Field size from 64K bits to 4G bits.
8791 Completed implementation of the external Global Lock interfaces --
8792 AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and
8793 Handler parameters were added.
8795 Completed another pass at removing warnings and issues when
8796 compiling with 64-bit compilers. The code now compiles cleanly
8797 with the Intel 64-bit C/C++ compiler. Most notably, the pointer
8798 add and subtract (diff) macros have changed considerably.
8801 Created and deployed a new ACPI_SIZE type that is 64-bits wide on
8802 64-bit platforms, 32-bits on all others. This type is used
8803 wherever memory allocation and/or the C sizeof() operator is used,
8804 and affects the OSL memory allocation interfaces AcpiOsAllocate
8805 and AcpiOsCallocate.
8807 Implemented sticky user breakpoints in the AML debugger.
8809 Code and Data Size: Current core subsystem library sizes are shown
8810 below. These are the code and data sizes for the acpica.lib
8811 produced by the Microsoft Visual C++ 6.0 compiler, and these
8812 values do not include any ACPI driver or OSPM code. The debug
8813 version of the code includes the debug output trace mechanism and
8814 has a larger code and data size. Note that these values will vary
8815 depending on the efficiency of the compiler and the compiler
8816 options used during generation.
8818 Previous Release (12_05_01)
8819 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
8820 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
8822 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
8823 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
8825 3) ASL Compiler, version X2034:
8827 Now checks for (and generates an error if detected) the use of a
8828 Break or Continue statement without an enclosing While statement.
8831 Successfully generated the compiler with the Intel 64-bit C
8834 ----------------------------------------
8835 Summary of changes for this label: 12_05_01
8837 1) ACPI CA Core Subsystem:
8839 The ACPI 2.0 CopyObject operator is fully implemented. This
8840 operator creates a new copy of an object (and is also used to
8841 bypass the "implicit conversion" mechanism of the Store operator.)
8843 The ACPI 2.0 semantics for the SizeOf operator are fully
8844 implemented. The change is that performing a SizeOf on a
8845 reference object causes an automatic dereference of the object to
8846 tha actual value before the size is evaluated. This behavior was
8847 undefined in ACPI 1.0.
8849 The ACPI 2.0 semantics for the Extended IRQ resource descriptor
8850 have been implemented. The interrupt polarity and mode are now
8853 Fixed a problem where ASL Constants (Zero, One, Ones, Revision)
8854 appearing in Package objects were not properly converted to
8855 integers when the internal Package was converted to an external
8856 object (via the AcpiEvaluateObject interface.)
8858 Fixed a problem with the namespace object deletion mechanism for
8859 objects created by control methods. There were two parts to this
8860 problem: 1) Objects created during the initialization phase method
8861 parse were not being deleted, and 2) The object owner ID mechanism
8862 to track objects was broken.
8864 Fixed a problem where the use of the ASL Scope operator within a
8865 control method would result in an invalid opcode exception.
8867 Fixed a problem introduced in the previous label where the buffer
8868 length required for the _PRT structure was not being returned
8871 Code and Data Size: Current core subsystem library sizes are shown
8872 below. These are the code and data sizes for the acpica.lib
8873 produced by the Microsoft Visual C++ 6.0 compiler, and these
8874 values do not include any ACPI driver or OSPM code. The debug
8875 version of the code includes the debug output trace mechanism and
8876 has a larger code and data size. Note that these values will vary
8877 depending on the efficiency of the compiler and the compiler
8878 options used during generation.
8880 Previous Release (11_20_01)
8881 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
8882 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
8885 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
8886 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
8890 Updated all files to apply cleanly against 2.4.16.
8892 Added basic PCI Interrupt Routing Table (PRT) support for IA32
8893 (acpi_pci.c), and unified the PRT code for IA32 and IA64. This
8894 version supports both static and dyanmic PRT entries, but dynamic
8895 entries are treated as if they were static (not yet
8896 reconfigurable). Architecture- specific code to use this data is
8897 absent on IA32 but should be available shortly.
8899 Changed the initialization sequence to start the ACPI interpreter
8900 (acpi_init) prior to initialization of the PCI driver (pci_init)
8901 in init/main.c. This ordering is required to support PRT and
8902 facilitate other (future) enhancement. A side effect is that the
8903 ACPI bus driver and certain device drivers can no longer be loaded
8906 Modified the 'make menuconfig' options to allow PCI Interrupt
8907 Routing support to be included without the ACPI Bus and other
8910 3) ASL Compiler, version X2033:
8912 Fixed some issues with the use of the new CopyObject and
8913 DataTableRegion operators. Both are fully functional.
8915 ----------------------------------------
8916 Summary of changes for this label: 11_20_01
8918 20 November 2001. Summary of changes for this release.
8920 1) ACPI CA Core Subsystem:
8922 Updated Index support to match ACPI 2.0 semantics. Storing a
8923 Integer, String, or Buffer to an Index of a Buffer will store only
8924 the least-significant byte of the source to the Indexed buffer
8925 byte. Multiple writes are not performed.
8927 Fixed a problem where the access type used in an AccessAs ASL
8928 operator was not recorded correctly into the field object.
8930 Fixed a problem where ASL Event objects were created in a
8931 signalled state. Events are now created in an unsignalled state.
8933 The internal object cache is now purged after table loading and
8934 initialization to reduce the use of dynamic kernel memory -- on
8935 the assumption that object use is greatest during the parse phase
8936 of the entire table (versus the run-time use of individual control
8939 ACPI 2.0 variable-length packages are now fully operational.
8941 Code and Data Size: Code and Data optimizations have permitted new
8942 feature development with an actual reduction in the library size.
8943 Current core subsystem library sizes are shown below. These are
8944 the code and data sizes for the acpica.lib produced by the
8945 Microsoft Visual C++ 6.0 compiler, and these values do not include
8946 any ACPI driver or OSPM code. The debug version of the code
8947 includes the debug output trace mechanism and has a larger code
8948 and data size. Note that these values will vary depending on the
8949 efficiency of the compiler and the compiler options used during
8952 Previous Release (11_09_01):
8953 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
8954 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
8957 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
8958 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
8962 Enhanced the ACPI boot-time initialization code to allow the use
8963 of Local APIC tables for processor enumeration on IA-32, and to
8964 pave the way for a fully MPS-free boot (on SMP systems) in the
8965 near future. This functionality replaces
8966 arch/i386/kernel/acpitables.c, which was introduced in an earlier
8967 2.4.15-preX release. To enable this feature you must add
8968 "acpi_boot=on" to the kernel command line -- see the help entry
8969 for CONFIG_ACPI_BOOT for more information. An IA-64 release is in
8972 Restructured the configuration options to allow boot-time table
8973 parsing support without inclusion of the ACPI Interpreter (and
8976 NOTE: This release does not include fixes for the reported events,
8977 power-down, and thermal passive cooling issues (coming soon).
8981 Added additional typechecking for Fields within restricted access
8982 Operation Regions. All fields within EC and CMOS regions must be
8983 declared with ByteAcc. All fields withing SMBus regions must be
8984 declared with the BufferAcc access type.
8986 Fixed a problem where the listing file output of control methods
8987 no longer interleaved the actual AML code with the ASL source
8993 ----------------------------------------
8994 Summary of changes for this label: 11_09_01
8996 1) ACPI CA Core Subsystem:
8998 Implemented ACPI 2.0-defined support for writes to fields with a
8999 Buffer, String, or Integer source operand that is smaller than the
9000 target field. In these cases, the source operand is zero-extended
9001 to fill the target field.
9003 Fixed a problem where a Field starting bit offset (within the
9004 parent operation region) was calculated incorrectly if the
9006 alignment of the field differed from the access width. This
9007 affected CreateWordField, CreateDwordField, CreateQwordField, and
9008 possibly other fields that use the "AccessAny" keyword.
9010 Fixed a problem introduced in the 11_02_01 release where indirect
9011 stores through method arguments did not operate correctly.
9015 Implemented boot-time ACPI table parsing support
9016 (CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code
9017 facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than
9018 legacy BIOS interfaces (e.g. MPS) for the configuration of system
9019 processors, memory, and interrupts during setup_arch(). Note that
9020 this patch does not include the required architecture-specific
9021 changes required to apply this information -- subsequent patches
9022 will be posted for both IA32 and IA64 to achieve this.
9024 Added low-level sleep support for IA32 platforms, courtesy of Pat
9025 Mochel. This allows IA32 systems to transition to/from various
9026 sleeping states (e.g. S1, S3), although the lack of a centralized
9027 driver model and power-manageable drivers will prevent its
9028 (successful) use on most systems.
9030 Revamped the ACPI 'menuconfig' layout: created new "ACPI Support"
9031 submenu, unified IA32 and IA64 options, added new "Boot using ACPI
9032 tables" option, etc.
9034 Increased the default timeout for the EC driver from 1ms to 10ms
9035 (1000 cycles of 10us) to try to address AE_TIME errors during EC
9038 ----------------------------------------
9039 Summary of changes for this label: 11_02_01
9041 1) ACPI CA Core Subsystem:
9043 ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access
9044 (QWordAcc keyword). All ACPI 2.0 64-bit support is now
9047 OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required
9048 changes to support ACPI 2.0 Qword field access. Read/Write
9049 PciConfiguration(), Read/Write Memory(), and Read/Write Port() now
9050 accept an ACPI_INTEGER (64 bits) as the value parameter. Also,
9051 the value parameter for the address space handler interface is now
9052 an ACPI_INTEGER. OSL implementations of these interfaces must now
9053 handle the case where the Width parameter is 64.
9055 Index Fields: Fixed a problem where unaligned bit assembly and
9056 disassembly for IndexFields was not supported correctly.
9058 Index and Bank Fields: Nested Index and Bank Fields are now
9059 supported. During field access, a check is performed to ensure
9060 that the value written to an Index or Bank register is not out of
9061 the range of the register. The Index (or Bank) register is
9062 written before each access to the field data. Future support will
9063 include allowing individual IndexFields to be wider than the
9066 Fields: Fixed a problem where the AML interpreter was incorrectly
9067 attempting to write beyond the end of a Field/OpRegion. This was
9068 a boundary case that occurred when a DWORD field was written to a
9069 BYTE access OpRegion, forcing multiple writes and causing the
9070 interpreter to write one datum too many.
9072 Fields: Fixed a problem with Field/OpRegion access where the
9073 starting bit address of a field was incorrectly calculated if the
9074 current access type was wider than a byte (WordAcc, DwordAcc, or
9077 Fields: Fixed a problem where forward references to individual
9078 FieldUnits (individual Field names within a Field definition) were
9079 not resolved during the AML table load.
9081 Fields: Fixed a problem where forward references from a Field
9082 definition to the parent Operation Region definition were not
9083 resolved during the AML table load.
9085 Fields: Duplicate FieldUnit names within a scope are now detected
9086 during AML table load.
9088 Acpi Interfaces: Fixed a problem where the AcpiGetName() interface
9089 returned an incorrect name for the root node.
9091 Code and Data Size: Code and Data optimizations have permitted new
9092 feature development with an actual reduction in the library size.
9093 Current core subsystem library sizes are shown below. These are
9094 the code and data sizes for the acpica.lib produced by the
9095 Microsoft Visual C++ 6.0 compiler, and these values do not include
9096 any ACPI driver or OSPM code. The debug version of the code
9097 includes the debug output trace mechanism and has a larger code
9098 and data size. Note that these values will vary depending on the
9099 efficiency of the compiler and the compiler options used during
9102 Previous Release (10_18_01):
9103 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
9104 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
9107 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
9108 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
9112 Improved /proc processor output (Pavel Machek) Re-added
9113 MODULE_LICENSE("GPL") to all modules.
9115 3) ASL Compiler version X2030:
9117 Duplicate FieldUnit names within a scope are now detected and
9122 Programmer Reference updated to reflect OSL and address space
9123 handler interface changes described above.
9125 ----------------------------------------
9126 Summary of changes for this label: 10_18_01
9128 ACPI CA Core Subsystem:
9130 Fixed a problem with the internal object reference count mechanism
9131 that occasionally caused premature object deletion. This resolves
9132 all of the outstanding problem reports where an object is deleted
9133 in the middle of an interpreter evaluation. Although this problem
9134 only showed up in rather obscure cases, the solution to the
9135 problem involved an adjustment of all reference counts involving
9136 objects attached to namespace nodes.
9138 Fixed a problem with Field support in the interpreter where
9139 writing to an aligned field whose length is an exact multiple (2
9140 or greater) of the field access granularity would cause an attempt
9141 to write beyond the end of the field.
9143 The top level AML opcode execution functions within the
9144 interpreter have been renamed with a more meaningful and
9145 consistent naming convention. The modules exmonad.c and
9146 exdyadic.c were eliminated. New modules are exoparg1.c,
9147 exoparg2.c, exoparg3.c, and exoparg6.c.
9149 Support for the ACPI 2.0 "Mid" ASL operator has been implemented.
9151 Fixed a problem where the AML debugger was causing some internal
9152 objects to not be deleted during subsystem termination.
9154 Fixed a problem with the external AcpiEvaluateObject interface
9155 where the subsystem would fault if the named object to be
9156 evaluated refered to a constant such as Zero, Ones, etc.
9158 Fixed a problem with IndexFields and BankFields where the
9159 subsystem would fault if the index, data, or bank registers were
9160 not defined in the same scope as the field itself.
9162 Added printf format string checking for compilers that support
9163 this feature. Corrected more than 50 instances of issues with
9164 format specifiers within invocations of ACPI_DEBUG_PRINT
9165 throughout the core subsystem code.
9167 The ASL "Revision" operator now returns the ACPI support level
9168 implemented in the core - the value "2" since the ACPI 2.0 support
9169 is more than 50% implemented.
9171 Enhanced the output of the AML debugger "dump namespace" command
9172 to output in a more human-readable form.
9174 Current core subsystem library code sizes are shown below. These
9176 are the code and data sizes for the acpica.lib produced by the
9177 Microsoft Visual C++ 6.0 compiler, and these values do not include
9178 any ACPI driver or OSPM code. The debug version of the code
9179 includes the full debug trace mechanism -- leading to a much
9181 larger code and data size. Note that these values will vary
9182 depending on the efficiency of the compiler and the compiler
9183 options used during generation.
9185 Previous Label (09_20_01):
9186 Non-Debug Version: 65K Code, 5K Data, 70K Total
9187 Debug Version: 138K Code, 58K Data, 196K Total
9191 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
9192 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
9196 Implemented a "Bad BIOS Blacklist" to track machines that have
9197 known ASL/AML problems.
9199 Enhanced the /proc interface for the thermal zone driver and added
9200 support for _HOT (the critical suspend trip point). The 'info'
9201 file now includes threshold/policy information, and allows setting
9202 of _SCP (cooling preference) and _TZP (polling frequency) values
9203 to the 'info' file. Examples: "echo tzp=5 > info" sets the polling
9204 frequency to 5 seconds, and "echo scp=1 > info" sets the cooling
9205 preference to the passive/quiet mode (if supported by the ASL).
9207 Implemented a workaround for a gcc bug that resuted in an OOPs
9208 when loading the control method battery driver.
9210 ----------------------------------------
9211 Summary of changes for this label: 09_20_01
9213 ACPI CA Core Subsystem:
9215 The AcpiEnableEvent and AcpiDisableEvent interfaces have been
9216 modified to allow individual GPE levels to be flagged as wake-
9217 enabled (i.e., these GPEs are to remain enabled when the platform
9220 The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now
9221 support wake-enabled GPEs. This means that upon entering the
9222 sleep state, all GPEs that are not wake-enabled are disabled.
9223 When leaving the sleep state, these GPEs are reenabled.
9225 A local double-precision divide/modulo module has been added to
9226 enhance portability to OS kernels where a 64-bit math library is
9227 not available. The new module is "utmath.c".
9229 Several optimizations have been made to reduce the use of CPU
9230 stack. Originally over 2K, the maximum stack usage is now below
9231 2K at 1860 bytes (1.82k)
9233 Fixed a problem with the AcpiGetFirmwareTable interface where the
9234 root table pointer was not mapped into a logical address properly.
9236 Fixed a problem where a NULL pointer was being dereferenced in the
9237 interpreter code for the ASL Notify operator.
9239 Fixed a problem where the use of the ASL Revision operator
9240 returned an error. This operator now returns the current version
9241 of the ACPI CA core subsystem.
9243 Fixed a problem where objects passed as control method parameters
9244 to AcpiEvaluateObject were always deleted at method termination.
9245 However, these objects may end up being stored into the namespace
9246 by the called method. The object reference count mechanism was
9247 applied to these objects instead of a force delete.
9249 Fixed a problem where static strings or buffers (contained in the
9250 AML code) that are declared as package elements within the ASL
9251 code could cause a fault because the interpreter would attempt to
9252 delete them. These objects are now marked with the "static
9253 object" flag to prevent any attempt to delete them.
9255 Implemented an interpreter optimization to use operands directly
9256 from the state object instead of extracting the operands to local
9257 variables. This reduces stack use and code size, and improves
9260 The module exxface.c was eliminated as it was an unnecessary extra
9263 Current core subsystem library code sizes are shown below. These
9264 are the code and data sizes for the acpica.lib produced by the
9265 Microsoft Visual C++ 6.0 compiler, and these values do not include
9266 any ACPI driver or OSPM code. The debug version of the code
9267 includes the full debug trace mechanism -- leading to a much
9268 larger code and data size. Note that these values will vary
9269 depending on the efficiency of the compiler and the compiler
9270 options used during generation.
9272 Non-Debug Version: 65K Code, 5K Data, 70K Total
9273 (Previously 69K) Debug Version: 138K Code, 58K Data, 196K
9274 Total (Previously 195K)
9278 Support for ACPI 2.0 64-bit integers has been added. All ACPI
9279 Integer objects are now 64 bits wide
9281 All Acpi data types and structures are now in lower case. Only
9282 Acpi macros are upper case for differentiation.
9286 Changes to the external interfaces as described above.
9288 ----------------------------------------
9289 Summary of changes for this label: 08_31_01
9291 ACPI CA Core Subsystem:
9293 A bug with interpreter implementation of the ASL Divide operator
9294 was found and fixed. The implicit function return value (not the
9295 explicit store operands) was returning the remainder instead of
9296 the quotient. This was a longstanding bug and it fixes several
9297 known outstanding issues on various platforms.
9299 The ACPI_DEBUG_PRINT and function trace entry/exit macros have
9300 been further optimized for size. There are 700 invocations of the
9301 DEBUG_PRINT macro alone, so each optimization reduces the size of
9302 the debug version of the subsystem significantly.
9304 A stack trace mechanism has been implemented. The maximum stack
9305 usage is about 2K on 32-bit platforms. The debugger command "stat
9306 stack" will display the current maximum stack usage.
9308 All public symbols and global variables within the subsystem are
9309 now prefixed with the string "Acpi". This keeps all of the
9310 symbols grouped together in a kernel map, and avoids conflicts
9311 with other kernel subsystems.
9313 Most of the internal fixed lookup tables have been moved into the
9314 code segment via the const operator.
9316 Several enhancements have been made to the interpreter to both
9317 reduce the code size and improve performance.
9319 Current core subsystem library code sizes are shown below. These
9320 are the code and data sizes for the acpica.lib produced by the
9321 Microsoft Visual C++ 6.0 compiler, and these values do not include
9322 any ACPI driver or OSPM code. The debug version of the code
9323 includes the full debug trace mechanism which contains over 700
9324 invocations of the DEBUG_PRINT macro, 500 function entry macro
9325 invocations, and over 900 function exit macro invocations --
9326 leading to a much larger code and data size. Note that these
9327 values will vary depending on the efficiency of the compiler and
9328 the compiler options used during generation.
9330 Non-Debug Version: 64K Code, 5K Data, 69K Total
9331 Debug Version: 137K Code, 58K Data, 195K Total
9335 Implemented wbinvd() macro, pending a kernel-wide definition.
9337 Fixed /proc/acpi/event to handle poll() and short reads.
9339 ASL Compiler, version X2026:
9341 Fixed a problem introduced in the previous label where the AML
9343 code emitted for package objects produced packages with zero
9346 ----------------------------------------
9347 Summary of changes for this label: 08_16_01
9349 ACPI CA Core Subsystem:
9351 The following ACPI 2.0 ASL operators have been implemented in the
9352 AML interpreter (These are already supported by the Intel ASL
9353 compiler): ToDecimalString, ToHexString, ToString, ToInteger, and
9354 ToBuffer. Support for 64-bit AML constants is implemented in the
9355 AML parser, debugger, and disassembler.
9357 The internal memory tracking mechanism (leak detection code) has
9358 been upgraded to reduce the memory overhead (a separate tracking
9359 block is no longer allocated for each memory allocation), and now
9360 supports all of the internal object caches.
9362 The data structures and code for the internal object caches have
9363 been coelesced and optimized so that there is a single cache and
9364 memory list data structure and a single group of functions that
9365 implement generic cache management. This has reduced the code
9366 size in both the debug and release versions of the subsystem.
9368 The DEBUG_PRINT macro(s) have been optimized for size and replaced
9369 by ACPI_DEBUG_PRINT. The syntax for this macro is slightly
9370 different, because it generates a single call to an internal
9371 function. This results in a savings of about 90 bytes per
9372 invocation, resulting in an overall code and data savings of about
9373 16% in the debug version of the subsystem.
9377 Fixed C3 disk corruption problems and re-enabled C3 on supporting
9380 Integrated low-level sleep code by Patrick Mochel.
9382 Further tweaked source code Linuxization.
9388 Support for ACPI 2.0 variable length packages is fixed/completed.
9390 Fixed a problem where the optional length parameter for the ACPI
9391 2.0 ToString operator.
9393 Fixed multiple extraneous error messages when a syntax error is
9394 detected within the declaration line of a control method.
9396 ----------------------------------------
9397 Summary of changes for this label: 07_17_01
9399 ACPI CA Core Subsystem:
9401 Added a new interface named AcpiGetFirmwareTable to obtain any
9402 ACPI table via the ACPI signature. The interface can be called at
9403 any time during kernel initialization, even before the kernel
9404 virtual memory manager is initialized and paging is enabled. This
9405 allows kernel subsystems to obtain ACPI tables very early, even
9406 before the ACPI CA subsystem is initialized.
9408 Fixed a problem where Fields defined with the AnyAcc attribute
9409 could be resolved to the incorrect address under the following
9410 conditions: 1) the field width is larger than 8 bits and 2) the
9411 parent operation region is not defined on a DWORD boundary.
9413 Fixed a problem where the interpreter is not being locked during
9414 namespace initialization (during execution of the _INI control
9415 methods), causing an error when an attempt is made to release it
9418 ACPI 2.0 support in the AML Interpreter has begun and will be
9419 ongoing throughout the rest of this year. In this label, The Mod
9420 operator is implemented.
9422 Added a new data type to contain full PCI addresses named
9423 ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device,
9424 and Function values.
9428 Enhanced the Linux version of the source code to change most
9429 capitalized ACPI type names to lowercase. For example, all
9430 instances of ACPI_STATUS are changed to acpi_status. This will
9431 result in a large diff, but the change is strictly cosmetic and
9432 aligns the CA code closer to the Linux coding standard.
9436 The interfaces to the PCI configuration space have been changed to
9437 add the PCI Segment number and to split the single 32-bit combined
9438 DeviceFunction field into two 16-bit fields. This was
9439 accomplished by moving the four values that define an address in
9440 PCI configuration space (segment, bus, device, and function) to
9441 the new ACPI_PCI_ID structure.
9443 The changes to the PCI configuration space interfaces led to a
9444 reexamination of the complete set of address space access
9445 interfaces for PCI, I/O, and Memory. The previously existing 18
9446 interfaces have proven difficult to maintain (any small change
9447 must be propagated across at least 6 interfaces) and do not easily
9448 allow for future expansion to 64 bits if necessary. Also, on some
9449 systems, it would not be appropriate to demultiplex the access
9450 width (8, 16, 32,or 64) before calling the OSL if the
9451 corresponding native OS interfaces contain a similar access width
9452 parameter. For these reasons, the 18 address space interfaces
9453 have been replaced by these 6 new ones:
9455 AcpiOsReadPciConfiguration
9456 AcpiOsWritePciConfiguration
9462 Added a new interface named AcpiOsGetRootPointer to allow the OSL
9463 to perform the platform and/or OS-specific actions necessary to
9464 obtain the ACPI RSDP table pointer. On IA-32 platforms, this
9465 interface will simply call down to the CA core to perform the low-
9466 memory search for the table. On IA-64, the RSDP is obtained from
9467 EFI. Migrating this interface to the OSL allows the CA core to
9469 remain OS and platform independent.
9471 Added a new interface named AcpiOsSignal to provide a generic
9472 "function code and pointer" interface for various miscellaneous
9473 signals and notifications that must be made to the host OS. The
9474 first such signals are intended to support the ASL Fatal and
9475 Breakpoint operators. In the latter case, the AcpiOsBreakpoint
9476 interface has been obsoleted.
9478 The definition of the AcpiFormatException interface has been
9479 changed to simplify its use. The caller no longer must supply a
9480 buffer to the call; A pointer to a const string is now returned
9481 directly. This allows the call to be easily used in printf
9482 statements, etc. since the caller does not have to manage a local
9486 ASL Compiler, Version X2025:
9488 The ACPI 2.0 Switch/Case/Default operators have been implemented
9489 and are fully functional. They will work with all ACPI 1.0
9490 interpreters, since the operators are simply translated to If/Else
9493 The ACPI 2.0 ElseIf operator is implemented and will also work
9494 with 1.0 interpreters, for the same reason.
9496 Implemented support for ACPI 2.0 variable-length packages. These
9497 packages have a separate opcode, and their size is determined by
9498 the interpreter at run-time.
9500 Documentation The ACPI CA Programmer Reference has been updated to
9501 reflect the new interfaces and changes to existing interfaces.
9503 ------------------------------------------
9504 Summary of changes for this label: 06_15_01
9506 ACPI CA Core Subsystem:
9508 Fixed a problem where a DWORD-accessed field within a Buffer
9509 object would get its byte address inadvertently rounded down to
9510 the nearest DWORD. Buffers are always Byte-accessible.
9512 ASL Compiler, version X2024:
9514 Fixed a problem where the Switch() operator would either fault or
9515 hang the compiler. Note however, that the AML code for this ACPI
9516 2.0 operator is not yet implemented.
9518 Compiler uses the new AcpiOsGetTimer interface to obtain compile
9521 Implementation of the CreateField operator automatically converts
9522 a reference to a named field within a resource descriptor from a
9523 byte offset to a bit offset if required.
9525 Added some missing named fields from the resource descriptor
9526 support. These are the names that are automatically created by the
9527 compiler to reference fields within a descriptor. They are only
9528 valid at compile time and are not passed through to the AML
9531 Resource descriptor named fields are now typed as Integers and
9532 subject to compile-time typechecking when used in expressions.
9534 ------------------------------------------
9535 Summary of changes for this label: 05_18_01
9537 ACPI CA Core Subsystem:
9539 Fixed a couple of problems in the Field support code where bits
9540 from adjacent fields could be returned along with the proper field
9541 bits. Restructured the field support code to improve performance,
9542 readability and maintainability.
9544 New DEBUG_PRINTP macro automatically inserts the procedure name
9545 into the output, saving hundreds of copies of procedure name
9546 strings within the source, shrinking the memory footprint of the
9547 debug version of the core subsystem.
9549 Source Code Structure:
9551 The source code directory tree was restructured to reflect the
9552 current organization of the component architecture. Some files
9553 and directories have been moved and/or renamed.
9557 Fixed leaking kacpidpc processes.
9559 Fixed queueing event data even when /proc/acpi/event is not
9562 ASL Compiler, version X2020:
9564 Memory allocation performance enhancement - over 24X compile time
9565 improvement on large ASL files. Parse nodes and namestring
9566 buffers are now allocated from a large internal compiler buffer.
9568 The temporary .SRC file is deleted unless the "-s" option is
9571 The "-d" debug output option now sends all output to the .DBG file
9572 instead of the console.
9574 "External" second parameter is now optional
9576 "ElseIf" syntax now properly allows the predicate
9578 Last operand to "Load" now recognized as a Target operand
9580 Debug object can now be used anywhere as a normal object.
9582 ResourceTemplate now returns an object of type BUFFER
9584 EISAID now returns an object of type INTEGER
9586 "Index" now works with a STRING operand
9588 "LoadTable" now accepts optional parameters
9590 "ToString" length parameter is now optional
9592 "Interrupt (ResourceType," parse error fixed.
9594 "Register" with a user-defined region space parse error fixed
9596 Escaped backslash at the end of a string ("\\") scan/parse error
9599 "Revision" is now an object of type INTEGER.
9603 ------------------------------------------
9604 Summary of changes for this label: 05_02_01
9608 /proc/acpi/event now blocks properly.
9610 Removed /proc/sys/acpi. You can still dump your DSDT from
9613 ACPI CA Core Subsystem:
9615 Fixed a problem introduced in the previous label where some of the
9616 "small" resource descriptor types were not recognized.
9618 Improved error messages for the case where an ASL Field is outside
9619 the range of the parent operation region.
9621 ASL Compiler, version X2018:
9624 Added error detection for ASL Fields that extend beyond the length
9625 of the parent operation region (only if the length of the region
9626 is known at compile time.) This includes fields that have a
9627 minimum access width that is smaller than the parent region, and
9628 individual field units that are partially or entirely beyond the
9629 extent of the parent.
9633 ------------------------------------------
9634 Summary of changes for this label: 04_27_01
9636 ACPI CA Core Subsystem:
9638 Fixed a problem where the namespace mutex could be released at the
9639 wrong time during execution of AcpiRemoveAddressSpaceHandler.
9641 Added optional thread ID output for debug traces, to simplify
9642 debugging of multiple threads. Added context switch notification
9643 when the debug code realizes that a different thread is now
9644 executing ACPI code.
9646 Some additional external data types have been prefixed with the
9647 string "ACPI_" for consistency. This may effect existing code.
9648 The data types affected are the external callback typedefs - e.g.,
9650 WALK_CALLBACK becomes ACPI_WALK_CALLBACK.
9654 Fixed an issue with the OSL semaphore implementation where a
9655 thread was waking up with an error from receiving a SIGCHLD
9658 Linux version of ACPI CA now uses the system C library for string
9659 manipulation routines instead of a local implementation.
9661 Cleaned up comments and removed TBDs.
9663 ASL Compiler, version X2017:
9665 Enhanced error detection and reporting for all file I/O
9670 Programmer Reference updated to version 1.06.
9674 ------------------------------------------
9675 Summary of changes for this label: 04_13_01
9677 ACPI CA Core Subsystem:
9679 Restructured support for BufferFields and RegionFields.
9680 BankFields support is now fully operational. All known 32-bit
9681 limitations on field sizes have been removed. Both BufferFields
9682 and (Operation) RegionFields are now supported by the same field
9685 Resource support now supports QWORD address and IO resources. The
9686 16/32/64 bit address structures and the Extended IRQ structure
9687 have been changed to properly handle Source Resource strings.
9689 A ThreadId of -1 is now used to indicate a "mutex not acquired"
9690 condition internally and must never be returned by AcpiOsThreadId.
9691 This reserved value was changed from 0 since Unix systems allow a
9696 Driver code reorganized to enhance portability
9698 Added a kernel configuration option to control ACPI_DEBUG
9700 Fixed the EC driver to honor _GLK.
9702 ASL Compiler, version X2016:
9704 Fixed support for the "FixedHw" keyword. Previously, the FixedHw
9705 address space was set to 0, not 0x7f as it should be.
9707 ------------------------------------------
9708 Summary of changes for this label: 03_13_01
9710 ACPI CA Core Subsystem:
9712 During ACPI initialization, the _SB_._INI method is now run if
9715 Notify handler fix - notifies are deferred until the parent method
9716 completes execution. This fixes the "mutex already acquired"
9717 issue seen occasionally.
9719 Part of the "implicit conversion" rules in ACPI 2.0 have been
9720 found to cause compatibility problems with existing ASL/AML. The
9721 convert "result-to-target-type" implementation has been removed
9722 for stores to method Args and Locals. Source operand conversion
9723 is still fully implemented. Possible changes to ACPI 2.0
9724 specification pending.
9726 Fix to AcpiRsCalculatePciRoutingTableLength to return correct
9729 Fix for compiler warnings for 64-bit compiles.
9733 /proc output aligned for easier parsing.
9735 Release-version compile problem fixed.
9737 New kernel configuration options documented in Configure.help.
9739 IBM 600E - Fixed Sleep button may generate "Invalid <NULL>
9744 Power resource driver integrated with bus manager.
9746 Fixed kernel fault during active cooling for thermal zones.
9750 The source code tree has been restructured.
9754 ------------------------------------------
9755 Summary of changes for this label: 03_02_01
9757 Linux OS Services Layer (OSL):
9759 Major revision of all Linux-specific code.
9761 Modularized all ACPI-specific drivers.
9763 Added new thermal zone and power resource drivers.
9765 Revamped /proc interface (new functionality is under /proc/acpi).
9767 New kernel configuration options.
9771 New kernel configuration options not documented in Configure.help
9775 Module dependencies not currently implemented. If used, they
9776 should be loaded in this order: busmgr, power, ec, system,
9777 processor, battery, ac_adapter, button, thermal.
9779 Modules will not load if CONFIG_MODVERSION is set.
9781 IBM 600E - entering S5 may reboot instead of shutting down.
9783 IBM 600E - Sleep button may generate "Invalid <NULL> context"
9786 Some systems may fail with "execution mutex already acquired"
9789 ACPI CA Core Subsystem:
9791 Added a new OSL Interface, AcpiOsGetThreadId. This was required
9792 for the deadlock detection code. Defined to return a non-zero, 32-
9793 bit thread ID for the currently executing thread. May be a non-
9794 zero constant integer on single-thread systems.
9796 Implemented deadlock detection for internal subsystem mutexes. We
9797 may add conditional compilation for this code (debug only) later.
9799 ASL/AML Mutex object semantics are now fully supported. This
9800 includes multiple acquires/releases by owner and support for the
9802 Mutex SyncLevel parameter.
9804 A new "Force Release" mechanism automatically frees all ASL
9805 Mutexes that have been acquired but not released when a thread
9806 exits the interpreter. This forces conformance to the ACPI spec
9807 ("All mutexes must be released when an invocation exits") and
9808 prevents deadlocked ASL threads. This mechanism can be expanded
9809 (later) to monitor other resource acquisitions if OEM ASL code
9810 continues to misbehave (which it will).
9812 Several new ACPI exception codes have been added for the Mutex
9815 Recursive method calls are now allowed and supported (the ACPI
9816 spec does in fact allow recursive method calls.) The number of
9817 recursive calls is subject to the restrictions imposed by the
9818 SERIALIZED method keyword and SyncLevel (ACPI 2.0) method
9821 Implemented support for the SyncLevel parameter for control
9822 methods (ACPI 2.0 feature)
9824 Fixed a deadlock problem when multiple threads attempted to use
9827 Fixed a problem where the string length of a String package
9828 element was not always set in a package returned from
9831 Fixed a problem where the length of a String package element was
9832 not always included in the length of the overall package returned
9833 from AcpiEvaluateObject.
9835 Added external interfaces (Acpi*) to the ACPI debug memory
9836 manager. This manager keeps a list of all outstanding
9837 allocations, and can therefore detect memory leaks and attempts to
9838 free memory blocks more than once. Useful for code such as the
9839 power manager, etc. May not be appropriate for device drivers.
9840 Performance with the debug code enabled is slow.
9842 The ACPI Global Lock is now an optional hardware element.
9844 ASL Compiler Version X2015:
9846 Integrated changes to allow the compiler to be generated on
9849 Linux makefile added to generate the compiler on Linux
9853 All platform-specific headers have been moved to their own
9854 subdirectory, Include/Platform.
9856 New source file added, Interpreter/ammutex.c
9858 New header file, Include/acstruct.h
9862 The programmer reference has been updated for the following new
9863 interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree
9865 ------------------------------------------
9866 Summary of changes for this label: 02_08_01
9868 Core ACPI CA Subsystem: Fixed a problem where an error was
9869 incorrectly returned if the return resource buffer was larger than
9870 the actual data (in the resource interfaces).
9872 References to named objects within packages are resolved to the
9874 full pathname string before packages are returned directly (via
9875 the AcpiEvaluateObject interface) or indirectly via the resource
9878 Linux OS Services Layer (OSL):
9880 Improved /proc battery interface.
9883 Added C-state debugging output and other miscellaneous fixes.
9885 ASL Compiler Version X2014:
9887 All defined method arguments can now be used as local variables,
9888 including the ones that are not actually passed in as parameters.
9889 The compiler tracks initialization of the arguments and issues an
9890 exception if they are used without prior assignment (just like
9893 The -o option now specifies a filename prefix that is used for all
9894 output files, including the AML output file. Otherwise, the
9895 default behavior is as follows: 1) the AML goes to the file
9896 specified in the DSDT. 2) all other output files use the input
9897 source filename as the base.
9899 ------------------------------------------
9900 Summary of changes for this label: 01_25_01
9902 Core ACPI CA Subsystem: Restructured the implementation of object
9903 store support within the interpreter. This includes support for
9904 the Store operator as well as any ASL operators that include a
9907 Partially implemented support for Implicit Result-to-Target
9908 conversion. This is when a result object is converted on the fly
9909 to the type of an existing target object. Completion of this
9910 support is pending further analysis of the ACPI specification
9911 concerning this matter.
9913 CPU-specific code has been removed from the subsystem (hardware
9916 New Power Management Timer functions added
9918 Linux OS Services Layer (OSL): Moved system state transition code
9919 to the core, fixed it, and modified Linux OSL accordingly.
9921 Fixed C2 and C3 latency calculations.
9924 We no longer use the compilation date for the version message on
9925 initialization, but retrieve the version from AcpiGetSystemInfo().
9927 Incorporated for fix Sony VAIO machines.
9929 Documentation: The Programmer Reference has been updated and
9933 ASL Compiler: Version X2013: Fixed a problem where the line
9934 numbering and error reporting could get out of sync in the
9935 presence of multiple include files.
9937 ------------------------------------------
9938 Summary of changes for this label: 01_15_01
9940 Core ACPI CA Subsystem:
9942 Implemented support for type conversions in the execution of the
9943 ASL Concatenate operator (The second operand is converted to
9944 match the type of the first operand before concatenation.)
9946 Support for implicit source operand conversion is partially
9947 implemented. The ASL source operand types Integer, Buffer, and
9948 String are freely interchangeable for most ASL operators and are
9949 converted by the interpreter on the fly as required. Implicit
9950 Target operand conversion (where the result is converted to the
9951 target type before storing) is not yet implemented.
9953 Support for 32-bit and 64-bit BCD integers is implemented.
9955 Problem fixed where a field read on an aligned field could cause a
9956 read past the end of the field.
9958 New exception, AE_AML_NO_RETURN_VALUE, is returned when a method
9959 does not return a value, but the caller expects one. (The ASL
9960 compiler flags this as a warning.)
9965 1. Static typechecking of all operands is implemented. This
9966 prevents the use of invalid objects (such as using a Package where
9967 an Integer is required) at compile time instead of at interpreter
9969 2. The ASL source line is printed with ALL errors and warnings.
9970 3. Bug fix for source EOF without final linefeed.
9971 4. Debug option is split into a parse trace and a namespace trace.
9972 5. Namespace output option (-n) includes initial values for
9973 integers and strings.
9974 6. Parse-only option added for quick syntax checking.
9975 7. Compiler checks for duplicate ACPI name declarations
9978 1. Relaxed typechecking to allow interchangeability between
9979 strings, integers, and buffers. These types are now converted by
9980 the interpreter at runtime.
9981 2. Compiler reports time taken by each internal subsystem in the
9985 ------------------------------------------
9986 Summary of changes for this label: 12_14_00
9990 This is the first official release of the compiler. Since the
9991 compiler requires elements of the Core Subsystem, this label
9992 synchronizes everything.
9994 ------------------------------------------
9995 Summary of changes for this label: 12_08_00
9998 Fixed a problem where named references within the ASL definition
9999 of both OperationRegions and CreateXXXFields did not work
10000 properly. The symptom was an AE_AML_OPERAND_TYPE during
10001 initialization of the region/field. This is similar (but not
10002 related internally) to the problem that was fixed in the last
10005 Implemented both 32-bit and 64-bit support for the BCD ASL
10006 functions ToBCD and FromBCD.
10008 Updated all legal headers to include "2000" in the copyright
10011 ------------------------------------------
10012 Summary of changes for this label: 12_01_00
10014 Fixed a problem where method invocations within the ASL definition
10015 of both OperationRegions and CreateXXXFields did not work
10016 properly. The symptom was an AE_AML_OPERAND_TYPE during
10017 initialization of the region/field:
10019 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments
10020 [DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s)
10023 Fixed a problem where operators with more than one nested
10024 subexpression would fail. The symptoms were varied, by mostly
10025 AE_AML_OPERAND_TYPE errors. This was actually a rather serious
10026 problem that has gone unnoticed until now.
10028 Subtract (Add (1,2), Multiply (3,4))
10030 Fixed a problem where AcpiGetHandle didn't quite get fixed in the
10031 previous build (The prefix part of a relative path was handled
10034 Fixed a problem where Operation Region initialization failed if
10035 the operation region name was a "namepath" instead of a simple
10036 "nameseg". Symptom was an AE_NO_OPERAND error.
10038 Fixed a problem where an assignment to a local variable via the
10039 indirect RefOf mechanism only worked for the first such
10040 assignment. Subsequent assignments were ignored.
10042 ------------------------------------------
10043 Summary of changes for this label: 11_15_00
10045 ACPI 2.0 table support with backwards support for ACPI 1.0 and the
10046 0.71 extensions. Note: although we can read ACPI 2.0 BIOS tables,
10047 the AML interpreter does NOT have support for the new 2.0 ASL
10048 grammar terms at this time.
10050 All ACPI hardware access is via the GAS structures in the ACPI 2.0
10053 All physical memory addresses across all platforms are now 64 bits
10054 wide. Logical address width remains dependent on the platform
10057 AcpiOsMapMemory interface changed to a 64-bit physical address.
10059 The AML interpreter integer size is now 64 bits, as per the ACPI
10062 For backwards compatibility with ACPI 1.0, ACPI tables with a
10063 revision number less than 2 use 32-bit integers only.
10065 Fixed a problem where the evaluation of OpRegion operands did not
10066 always resolve them to numbers properly.
10068 ------------------------------------------
10069 Summary of changes for this label: 10_20_00
10071 Fix for CBN_._STA issue. This fix will allow correct access to
10072 CBN_ OpRegions when the _STA returns 0x8.
10074 Support to convert ACPI constants (Ones, Zeros, One) to actual
10075 values before a package object is returned
10077 Fix for method call as predicate to if/while construct causing
10078 incorrect if/while behavior
10080 Fix for Else block package lengths sometimes calculated wrong (if
10083 Fix for Processor object length field, was always zero
10085 Table load abort if FACP sanity check fails
10087 Fix for problem with Scope(name) if name already exists
10089 Warning emitted if a named object referenced cannot be found
10090 (resolved) during method execution.
10096 ------------------------------------------
10097 Summary of changes for this label: 9_29_00
10099 New table initialization interfaces: AcpiInitializeSubsystem no
10100 longer has any parameters AcpiFindRootPointer - Find the RSDP (if
10101 necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP-
10102 >RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by
10105 Note: These interface changes require changes to all existing OSDs
10107 The PCI_Config default address space handler is always installed
10108 at the root namespace object.
10110 -------------------------------------------
10111 Summary of changes for this label: 09_15_00
10113 The new initialization architecture is implemented. New
10114 interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize)
10115 AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace
10117 (Namespace is automatically loaded when a table is loaded)
10119 The ACPI_OPERAND_OBJECT has been optimized to shrink its size from
10120 52 bytes to 32 bytes. There is usually one of these for every
10121 namespace object, so the memory savings is significant.
10123 Implemented just-in-time evaluation of the CreateField operators.
10125 Bug fixes for IA-64 support have been integrated.
10127 Additional code review comments have been implemented
10129 The so-called "third pass parse" has been replaced by a final walk
10130 through the namespace to initialize all operation regions (address
10131 spaces) and fields that have not yet been initialized during the
10132 execution of the various _INI and REG methods.
10134 New file - namespace/nsinit.c
10136 -------------------------------------------
10137 Summary of changes for this label: 09_01_00
10139 Namespace manager data structures have been reworked to change the
10140 primary object from a table to a single object. This has
10141 resulted in dynamic memory savings of 3X within the namespace and
10142 2X overall in the ACPI CA subsystem.
10144 Fixed problem where the call to AcpiEvFindPciRootBuses was
10145 inadvertently left commented out.
10147 Reduced the warning count when generating the source with the GCC
10150 Revision numbers added to each module header showing the
10151 SourceSafe version of the file. Please refer to this version
10152 number when giving us feedback or comments on individual modules.
10154 The main object types within the subsystem have been renamed to
10155 clarify their purpose:
10157 ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT
10158 ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT
10159 ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE
10161 NOTE: no changes to the initialization sequence are included in
10164 -------------------------------------------
10165 Summary of changes for this label: 08_23_00
10167 Fixed problem where TerminateControlMethod was being called
10168 multiple times per method
10170 Fixed debugger problem where single stepping caused a semaphore to
10173 Improved performance through additional parse object caching -
10174 added ACPI_EXTENDED_OP type
10176 -------------------------------------------
10177 Summary of changes for this label: 08_10_00
10179 Parser/Interpreter integration: Eliminated the creation of
10180 complete parse trees for ACPI tables and control methods.
10181 Instead, parse subtrees are created and then deleted as soon as
10182 they are processed (Either entered into the namespace or executed
10183 by the interpreter). This reduces the use of dynamic kernel
10184 memory significantly. (about 10X)
10186 Exception codes broken into classes and renumbered. Be sure to
10187 recompile all code that includes acexcep.h. Hopefully we won't
10188 have to renumber the codes again now that they are split into
10189 classes (environment, programmer, AML code, ACPI table, and
10192 Fixed some additional alignment issues in the Resource Manager
10195 Implemented semaphore tracking in the AcpiExec utility, and fixed
10196 several places where mutexes/semaphores were being unlocked
10197 without a corresponding lock operation. There are no known
10198 semaphore or mutex "leaks" at this time.
10200 Fixed the case where an ASL Return operator is used to return an
10203 -------------------------------------------
10204 Summary of changes for this label: 07_28_00
10206 Fixed a problem with the way addresses were calculated in
10207 AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem
10208 manifested itself when a Field was created with WordAccess or
10209 DwordAccess, but the field unit defined within the Field was less
10211 than a Word or Dword.
10213 Fixed a problem in AmlDumpOperands() module's loop to pull
10214 operands off of the operand stack to display information. The
10215 problem manifested itself as a TLB error on 64-bit systems when
10216 accessing an operand stack with two or more operands.
10218 Fixed a problem with the PCI configuration space handlers where
10219 context was getting confused between accesses. This required a
10220 change to the generic address space handler and address space
10221 setup definitions. Handlers now get both a global handler context
10222 (this is the one passed in by the user when executing
10223 AcpiInstallAddressSpaceHandler() and a specific region context
10224 that is unique to each region (For example, the _ADR, _SEG and
10225 _BBN values associated with a specific region). The generic
10226 function definitions have changed to the following:
10228 typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function,
10229 UINT32 Address, UINT32 BitWidth, UINT32 *Value, void
10230 *HandlerContext, // This used to be void *Context void
10231 *RegionContext); // This is an additional parameter
10233 typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE
10234 RegionHandle, UINT32 Function, void *HandlerContext, void
10235 **RegionContext); // This used to be **ReturnContext
10237 -------------------------------------------
10238 Summary of changes for this label: 07_21_00
10240 Major file consolidation and rename. All files within the
10241 interpreter have been renamed as well as most header files. This
10242 was done to prevent collisions with existing files in the host
10243 OSs -- filenames such as "config.h" and "global.h" seem to be
10244 quite common. The VC project files have been updated. All
10245 makefiles will require modification.
10247 The parser/interpreter integration continues in Phase 5 with the
10248 implementation of a complete 2-pass parse (the AML is parsed
10249 twice) for each table; This avoids the construction of a huge
10250 parse tree and therefore reduces the amount of dynamic memory
10251 required by the subsystem. Greater use of the parse object cache
10252 means that performance is unaffected.
10254 Many comments from the two code reviews have been rolled in.
10256 The 64-bit alignment support is complete.
10258 -------------------------------------------
10259 Summary of changes for this label: 06_30_00
10261 With a nod and a tip of the hat to the technology of yesteryear,
10262 we've added support in the source code for 80 column output
10263 devices. The code is now mostly constrained to 80 columns or
10264 less to support environments and editors that 1) cannot display
10265 or print more than 80 characters on a single line, and 2) cannot
10266 disable line wrapping.
10268 A major restructuring of the namespace data structure has been
10269 completed. The result is 1) cleaner and more
10270 understandable/maintainable code, and 2) a significant reduction
10271 in the dynamic memory requirement for each named ACPI object
10274 -------------------------------------------
10275 Summary of changes for this label: 06_23_00
10277 Linux support has been added. In order to obtain approval to get
10278 the ACPI CA subsystem into the Linux kernel, we've had to make
10279 quite a few changes to the base subsystem that will affect all
10280 users (all the changes are generic and OS- independent). The
10281 effects of these global changes have been somewhat far reaching.
10282 Files have been merged and/or renamed and interfaces have been
10283 renamed. The major changes are described below.
10285 Osd* interfaces renamed to AcpiOs* to eliminate namespace
10286 pollution/confusion within our target kernels. All OSD
10287 interfaces must be modified to match the new naming convention.
10289 Files merged across the subsystem. A number of the smaller source
10290 and header files have been merged to reduce the file count and
10291 increase the density of the existing files. There are too many
10292 to list here. In general, makefiles that call out individual
10293 files will require rebuilding.
10295 Interpreter files renamed. All interpreter files now have the
10296 prefix am* instead of ie* and is*.
10298 Header files renamed: The acapi.h file is now acpixf.h. The
10299 acpiosd.h file is now acpiosxf.h. We are removing references to
10300 the acronym "API" since it is somewhat windowsy. The new name is
10301 "external interface" or xface or xf in the filenames.j
10304 All manifest constants have been forced to upper case (some were
10305 mixed case.) Also, the string "ACPI_" has been prepended to many
10306 (not all) of the constants, typedefs, and structs.
10308 The globals "DebugLevel" and "DebugLayer" have been renamed
10309 "AcpiDbgLevel" and "AcpiDbgLayer" respectively.
10311 All other globals within the subsystem are now prefixed with
10312 "AcpiGbl_" Internal procedures within the subsystem are now
10313 prefixed with "Acpi" (with only a few exceptions). The original
10314 two-letter abbreviation for the subcomponent remains after "Acpi"
10315 - for example, CmCallocate became AcpiCmCallocate.
10317 Added a source code translation/conversion utility. Used to
10318 generate the Linux source code, it can be modified to generate
10319 other types of source as well. Can also be used to cleanup
10320 existing source by removing extraneous spaces and blank lines.
10321 Found in tools/acpisrc/*
10323 OsdUnMapMemory was renamed to OsdUnmapMemory and then
10324 AcpiOsUnmapMemory. (UnMap became Unmap).
10326 A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore.
10327 When set to one, this indicates that the caller wants to use the
10329 semaphore as a mutex, not a counting semaphore. ACPI CA uses
10330 both types. However, implementers of this call may want to use
10331 different OS primitives depending on the type of semaphore
10332 requested. For example, some operating systems provide separate
10334 "mutex" and "semaphore" interfaces - where the mutex interface is
10335 much faster because it doesn't have all the overhead of a full
10336 semaphore implementation.
10338 Fixed a deadlock problem where a method that accesses the PCI
10339 address space can block forever if it is the first access to the
10342 -------------------------------------------
10343 Summary of changes for this label: 06_02_00
10345 Support for environments that cannot handle unaligned data
10346 accesses (e.g. firmware and OS environments devoid of alignment
10347 handler technology namely SAL/EFI and the IA-64 Linux kernel) has
10348 been added (via configurable macros) in these three areas: -
10349 Transfer of data from the raw AML byte stream is done via byte
10350 moves instead of word/dword/qword moves. - External objects are
10351 aligned within the user buffer, including package elements (sub-
10352 objects). - Conversion of name strings to UINT32 Acpi Names is now
10355 The Store operator was modified to mimic Microsoft's
10356 implementation when storing to a Buffer Field.
10358 Added a check of the BM_STS bit before entering C3.
10360 The methods subdirectory has been obsoleted and removed. A new
10361 file, cmeval.c subsumes the functionality.
10363 A 16-bit (DOS) version of AcpiExec has been developed. The
10364 makefile is under the acpiexec directory.