1 ----------------------------------------
2 27 May 2011. Summary of changes for version 20110527:
3
4 This release is available at www.acpica.org/downloads
5
6 1) ACPI CA Core Subsystem:
7
8 ASL Load() operator: Reinstate most restrictions on the incoming ACPI table
9 signature. Now, only allow SSDT, OEMx, and a null signature. History:
10 1) Originally, we checked the table signature for "SSDT" or "PSDT".
11 (PSDT is now obsolete.)
12 2) We added support for OEMx tables, signature "OEM" plus a fourth
13 "don't care" character.
14 3) Valid tables were encountered with a null signature, so we just
15 gave up on validating the signature, (05/2008).
16 4) We encountered non-AML tables such as the MADT, which caused
17 interpreter errors and kernel faults. So now, we once again allow
18 only SSDT, OEMx, and now, also a null signature. (05/2011).
19
20 Added the missing _TDL predefined name to the global name list in order to
21 enable validation. Affects both the core ACPICA code and the iASL compiler.
22
23 Example Code and Data Size: These are the sizes for the OS-independent
24 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
25 version of the code includes the debug output trace mechanism and has a much
26 larger code and data size.
27
28 Previous Release (VC 9.0):
29 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
30 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
31 Current Release (VC 9.0):
32 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
33 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
34
35 2) iASL Compiler/Disassembler and Tools:
36
37 Debugger/AcpiExec: Implemented support for "complex" method arguments on the
38 debugger command line. This adds support beyond simple integers -- including
39 Strings, Buffers, and Packages. Includes support for nested packages.
40 Increased the default command line buffer size to accommodate these arguments.
41 See the ACPICA reference for details and syntax. ACPICA BZ 917.
42
43 Debugger/AcpiExec: Implemented support for "default" method arguments for the
44 Execute/Debug command. Now, the debugger will always invoke a control method
45 with the required number of arguments -- even if the command line specifies
46 none or insufficient arguments. It uses default integer values for any missing
47 arguments. Also fixes a bug where only six method arguments maximum were
48 supported instead of the required seven.
49
50 Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine and
51 also return status in order to prevent buffer overruns. See the ACPICA
52 reference for details and syntax. ACPICA BZ 921
53
54 iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and
55 makefiles to simplify support for the two different but similar parser
56 generators, bison and yacc.
57
58 Updated the generic unix makefile for gcc 4. The default gcc version is now
59 expected to be 4 or greater, since options specific to gcc 4 are used.
60
61 ----------------------------------------
62 13 April 2011. Summary of changes for version 20110413:
63
64 1) ACPI CA Core Subsystem:
65
66 Implemented support to execute a so-called "orphan" _REG method under the EC
67 device. This change will force the execution of a _REG method underneath the
68 EC
69 device even if there is no corresponding operation region of type
70 EmbeddedControl. Fixes a problem seen on some machines and apparently is
71 compatible with Windows behavior. ACPICA BZ 875.
72
73 Added more predefined methods that are eligible for automatic NULL package
74 element removal. This change adds another group of predefined names to the
75 list
76 of names that can be repaired by having NULL package elements dynamically
77 removed. This group are those methods that return a single variable-length
78 package containing simple data types such as integers, buffers, strings. This
79 includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx, _PSL,
80 _Sx,
81 and _TZD. ACPICA BZ 914.
82
83 Split and segregated all internal global lock functions to a new file,
84 evglock.c.
85
86 Updated internal address SpaceID for DataTable regions. Moved this internal
87 space
88 id in preparation for ACPI 5.0 changes that will include some new space IDs.
89 This
90 change should not affect user/host code.
91
92 Example Code and Data Size: These are the sizes for the OS-independent
93 acpica.lib
94 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug version of
95 the code includes the debug output trace mechanism and has a much larger code
96 and
97 data size.
98
99 Previous Release (VC 9.0):
100 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
101 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
102 Current Release (VC 9.0):
103 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
104 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
105
106 2) iASL Compiler/Disassembler and Tools:
107
108 iASL/DTC: Major update for new grammar features. Allow generic data types in
109 custom ACPI tables. Field names are now optional. Any line can be split to
110 multiple lines using the continuation char (\). Large buffers now use line-
111 continuation character(s) and no colon on the continuation lines. See the
112 grammar
113 update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob Moore.
114
115 iASL: Mark ASL "Return()" and the simple "Return" as "Null" return statements.
116 Since the parser stuffs a "zero" as the return value for these statements (due
117 to
118 the underlying AML grammar), they were seen as "return with value" by the iASL
119 semantic checking. They are now seen correctly as "null" return statements.
120
121 iASL: Check if a_REG declaration has a corresponding Operation Region. Adds a
122 check for each _REG to ensure that there is in fact a corresponding operation
123 region declaration in the same scope. If not, the _REG method is not very
124 useful
125 since it probably won't be executed. ACPICA BZ 915.
126
127 iASL/DTC: Finish support for expression evaluation. Added a new expression
128 parser
129 that implements c-style operator precedence and parenthesization. ACPICA
130 bugzilla
131 908.
132
133 Disassembler/DTC: Remove support for () and <> style comments in data tables.
134 Now
135 that DTC has full expression support, we don't want to have comment strings
136 that
137 start with a parentheses or a less-than symbol. Now, only the standard /* and
138 //
139 comments are supported, as well as the bracket [] comments.
140
141 AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have
142 "unusual"
143 headers in the acpidump file. Update the header validation to support these
144 tables. Problem introduced in previous AcpiXtract version in the change to
145 support "wrong checksum" error messages emitted by acpidump utility.
146
147 iASL: Add a * option to generate all template files (as a synonym for ALL) as
148 in
149 "iasl -T *" or "iasl -T ALL".
150
151 iASL/DTC: Do not abort compiler on fatal errors. We do not want to completely
152 abort the compiler on "fatal" errors, simply should abort the current compile.
153 This allows multiple compiles with a single (possibly wildcard) compiler
154 invocation.
155
156 ----------------------------------------
157 16 March 2011. Summary of changes for version 20110316:
158
159 1) ACPI CA Core Subsystem:
160
161 Fixed a problem caused by a _PRW method appearing at the namespace root scope
162 during the setup of wake GPEs. A fault could occur if a _PRW directly under
163 the
164 root object was passed to the AcpiSetupGpeForWake interface. Lin Ming.
165
166 Implemented support for "spurious" Global Lock interrupts. On some systems, a
167 global lock interrupt can occur without the pending flag being set. Upon a GL
168 interrupt, we now ensure that a thread is actually waiting for the lock before
169 signaling GL availability. Rafael Wysocki, Bob Moore.
170
171 Example Code and Data Size: These are the sizes for the OS-independent
172 acpica.lib
173 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug version of
174 the code includes the debug output trace mechanism and has a much larger code
175 and
176 data size.
177
178 Previous Release (VC 9.0):
179 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
180 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
181 Current Release (VC 9.0):
182 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
183 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
184
185 2) iASL Compiler/Disassembler and Tools:
186
187 Implemented full support for the "SLIC" ACPI table. Includes support in the
188 header files, disassembler, table compiler, and template generator. Bob Moore,
189 Lin Ming.
190
191 AcpiXtract: Correctly handle embedded comments and messages from AcpiDump.
192 Apparently some or all versions of acpidump will occasionally emit a comment
193 like
194 "Wrong checksum", etc., into the dump file. This was causing problems for
195 AcpiXtract. ACPICA BZ 905.
196
197 iASL: Fix the Linux makefile by removing an inadvertent double file inclusion.
198 ACPICA BZ 913.
199
200 AcpiExec: Update installation of operation region handlers. Install one
201 handler
202 for a user-defined address space. This is used by the ASL test suite (ASLTS).
203
204 ----------------------------------------
205 11 February 2011. Summary of changes for version 20110211:
206
207 1) ACPI CA Core Subsystem:
208
209 Added a mechanism to defer _REG methods for some early-installed handlers.
210 Most user handlers should be installed before call to AcpiEnableSubsystem.
211 However, Event handlers and region handlers should be installed after
212 AcpiInitializeObjects. Override handlers for the "default" regions should be
213 installed early, however. This change executes all _REG methods for the
214 default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any
215 chicken/egg issues between them. ACPICA BZ 848.
216
217 Implemented an optimization for GPE detection. This optimization will simply
218 ignore GPE registers that contain no enabled GPEs -- there is no need to
219 read the register since this information is available internally. This
220 becomes more important on machines with a large GPE space. ACPICA bugzilla
221 884. Lin Ming. Suggestion from Joe Liu.
222
223 Removed all use of the highly unreliable FADT revision field. The revision
224 number in the FADT has been found to be completely unreliable and cannot be
225 trusted. Only the actual table length can be used to infer the version. This
226 change updates the ACPICA core and the disassembler so that both no longer
227 even look at the FADT version and instead depend solely upon the FADT
228 length.
229
230 Fix an unresolved name issue for the no-debug and no-error-message source
231 generation cases. The _AcpiModuleName was left undefined in these cases, but
232 it is actually needed as a parameter to some interfaces. Define
233 _AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888.
234
235 Split several large files (makefiles and project files updated)
236 utglobal.c -> utdecode.c
237 dbcomds.c -> dbmethod.c dbnames.c
238 dsopcode.c -> dsargs.c dscontrol.c
239 dsload.c -> dsload2.c
240 aslanalyze.c -> aslbtypes.c aslwalks.c
241
242 Example Code and Data Size: These are the sizes for the OS-independent
243 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
244 debug version of the code includes the debug output trace mechanism and has
245 a much larger code and data size.
246
247 Previous Release (VC 9.0):
248 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
249 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
250 Current Release (VC 9.0):
251 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
252 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
253
254 2) iASL Compiler/Disassembler and Tools:
255
256 iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__.
257 These are useful C-style macros with the standard definitions. ACPICA
258 bugzilla 898.
259
260 iASL/DTC: Added support for integer expressions and labels. Support for full
261 expressions for all integer fields in all ACPI tables. Support for labels in
262 "generic" portions of tables such as UEFI. See the iASL reference manual.
263
264 Debugger: Added a command to display the status of global handlers. The
265 "handlers" command will display op region, fixed event, and miscellaneous
266 global handlers. installation status -- and for op regions, whether default
267 or user-installed handler will be used.
268
269 iASL: Warn if reserved method incorrectly returns a value. Many predefined
270 names are defined such that they do not return a value. If implemented as a
271 method, issue a warning if such a name explicitly returns a value. ACPICA
272 Bugzilla 855.
273
274 iASL: Added detection of GPE method name conflicts. Detects a conflict where
275 there are two GPE methods of the form _Lxy and _Exy in the same scope. (For
276 example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848.
277
278 iASL/DTC: Fixed a couple input scanner issues with comments and line
279 numbers. Comment remover could get confused and miss a comment ending. Fixed
280 a problem with line counter maintenance.
281
282 iASL/DTC: Reduced the severity of some errors from fatal to error. There is
283 no need to abort on simple errors within a field definition.
284
285 Debugger: Simplified the output of the help command. All help output now in
286 a single screen, instead of help subcommands. ACPICA Bugzilla 897.
287
288 ----------------------------------------
289 12 January 2011. Summary of changes for version 20110112:
290
291 1) ACPI CA Core Subsystem:
292
293 Fixed a race condition between method execution and namespace walks that can
294 possibly cause a fault. The problem was apparently introduced in version
295 20100528 as a result of a performance optimization that reduces the number of
296 namespace walks upon method exit by using the delete_namespace_subtree
297 function instead of the delete_namespace_by_owner function used previously.
298 Bug is a missing namespace lock in the delete_namespace_subtree function.
299 dana.myers@oracle.com
300
301 Fixed several issues and a possible fault with the automatic "serialized"
302 method support. History: This support changes a method to "serialized" on the
303 fly if the method generates an AE_ALREADY_EXISTS error, indicating the
304 possibility that it cannot handle reentrancy. This fix repairs a couple of
305 issues seen in the field, especially on machines with many cores:
306
307 1) Delete method children only upon the exit of the last thread,
308 so as to not delete objects out from under other running threads
309 (and possibly causing a fault.)
310 2) Set the "serialized" bit for the method only upon the exit of the
311 Last thread, so as to not cause deadlock when running threads
312 attempt to exit.
313 3) Cleanup the use of the AML "MethodFlags" and internal method flags
314 so that there is no longer any confusion between the two.
315
316 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com.
317
318 Debugger: Now lock the namespace for duration of a namespace dump. Prevents
319 issues if the namespace is changing dynamically underneath the debugger.
320 Especially affects temporary namespace nodes, since the debugger displays
321 these also.
322
323 Updated the ordering of include files. The ACPICA headers should appear
324 before any compiler-specific headers (stdio.h, etc.) so that acenv.h can set
325 any necessary compiler-specific defines, etc. Affects the ACPI-related tools
326 and utilities.
327
328 Updated all ACPICA copyrights and signons to 2011. Added the 2011 copyright
329 to all module headers and signons, including the Linux header. This affects
330 virtually every file in the ACPICA core subsystem, iASL compiler, and all
331 utilities.
332
333 Added project files for MS Visual Studio 2008 (VC++ 9.0). The original
334 project files for VC++ 6.0 are now obsolete. New project files can be found
335 under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for
336 details.
337
338 Example Code and Data Size: These are the sizes for the OS-independent
339 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
340 debug version of the code includes the debug output trace mechanism and has a
341 much larger code and data size.
342
343 Previous Release (VC 6.0):
344 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
345 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
346 Current Release (VC 9.0):
347 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
348 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
349
350 2) iASL Compiler/Disassembler and Tools:
351
352 iASL: Added generic data types to the Data Table compiler. Add "generic" data
353 types such as UINT32, String, Unicode, etc., to simplify the generation of
354 platform-defined tables such as UEFI. Lin Ming.
355
356 iASL: Added listing support for the Data Table Compiler. Adds listing support
357 (-l) to display actual binary output for each line of input code.
358
359 ----------------------------------------
360 09 December 2010. Summary of changes for version 20101209:
361
362 1) ACPI CA Core Subsystem:
363
364 Completed the major overhaul of the GPE support code that was begun in July
365 2010. Major features include: removal of _PRW execution in ACPICA (host
366 executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing,
367 changes to existing interfaces, simplification of GPE handler operation, and
368 a handful of new interfaces:
369
370 AcpiUpdateAllGpes
371 AcpiFinishGpe
372 AcpiSetupGpeForWake
373 AcpiSetGpeWakeMask
374 One new file, evxfgpe.c to consolidate all external GPE interfaces.
375
376 See the ACPICA Programmer Reference for full details and programming
377 information. See the new section 4.4 "General Purpose Event (GPE) Support"
378 for a full overview, and section 8.7 "ACPI General Purpose Event Management"
379 for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin Ming,
380 Bob Moore, Rafael Wysocki.
381
382 Implemented a new GPE feature for Windows compatibility, the "Implicit Wake
383 GPE Notify". This feature will automatically issue a Notify(2) on a device
384 when a Wake GPE is received if there is no corresponding GPE method or
385 handler. ACPICA BZ 870.
386
387 Fixed a problem with the Scope() operator during table parse and load phase.
388 During load phase (table load or method execution), the scope operator should
389 not enter the target into the namespace. Instead, it should open a new scope
390 at the target location. Linux BZ 19462, ACPICA BZ 882.
391
392 Example Code and Data Size: These are the sizes for the OS-independent
393 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
394 debug version of the code includes the debug output trace mechanism and has a
395 much larger code and data size.
396
397 Previous Release:
398 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
399 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
400 Current Release:
401 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
402 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
403
404 2) iASL Compiler/Disassembler and Tools:
405
406 iASL: Relax the alphanumeric restriction on _CID strings. These strings are
407 "bus-specific" per the ACPI specification, and therefore any characters are
408 acceptable. The only checks that can be performed are for a null string and
409 perhaps for a leading asterisk. ACPICA BZ 886.
410
411 iASL: Fixed a problem where a syntax error that caused a premature EOF
412 condition on the source file emitted a very confusing error message. The
413 premature EOF is now detected correctly. ACPICA BZ 891.
414
415 Disassembler: Decode the AccessSize within a Generic Address Structure (byte
416 access, word access, etc.) Note, this field does not allow arbitrary bit
417 access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword.
418
419 New: AcpiNames utility - Example namespace dump utility. Shows an example of
420 ACPICA configuration for a minimal namespace dump utility. Uses table and
421 namespace managers, but no AML interpreter. Does not add any functionality
422 over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to
423 partition and configure ACPICA. ACPICA BZ 883.
424
425 AML Debugger: Increased the debugger buffer size for method return objects.
426 Was 4K, increased to 16K. Also enhanced error messages for debugger method
427 execution, including the buffer overflow case.
428
429 ----------------------------------------
430 13 October 2010. Summary of changes for version 20101013:
431
432 1) ACPI CA Core Subsystem:
433
434 Added support to clear the PCIEXP_WAKE event. When clearing ACPI events, now
435 clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via
436 HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880.
437
438 Changed the type of the predefined namespace object _TZ from ThermalZone to
439 Device. This was found to be confusing to the host software that processes
440 the various thermal zones, since _TZ is not really a ThermalZone. However, a
441 Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui
442 Zhang.
443
444 Added Windows Vista SP2 to the list of supported _OSI strings. The actual
445 string is "Windows 2006 SP2".
446
447 Eliminated duplicate code in AcpiUtExecute* functions. Now that the nsrepair
448 code automatically repairs _HID-related strings, this type of code is no
449 longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ 878.
450
451 Example Code and Data Size: These are the sizes for the OS-independent
452 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
453 debug version of the code includes the debug output trace mechanism and has a
454 much larger code and data size.
455
456 Previous Release:
457 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
458 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
459 Current Release:
460 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
461 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
462
463 2) iASL Compiler/Disassembler and Tools:
464
465 iASL: Implemented additional compile-time validation for _HID strings. The
466 non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the length of
467 the string must be exactly seven or eight characters. For both _HID and _CID
468 strings, all characters must be alphanumeric. ACPICA BZ 874.
469
470 iASL: Allow certain "null" resource descriptors. Some BIOS code creates
471 descriptors that are mostly or all zeros, with the expectation that they will
472 be filled in at runtime. iASL now allows this as long as there is a "resource
473 tag" (name) associated with the descriptor, which gives the ASL a handle
474 needed to modify the descriptor. ACPICA BZ 873.
475
476 Added single-thread support to the generic Unix application OSL. Primarily
477 for iASL support, this change removes the use of semaphores in the single-
478 threaded ACPICA tools/applications - increasing performance. The
479 _MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED
480 option. ACPICA BZ 879.
481
482 AcpiExec: several fixes for the 64-bit version. Adds XSDT support and support
483 for 64-bit DSDT/FACS addresses in the FADT. Lin Ming.
484
485 iASL: Moved all compiler messages to a new file, aslmessages.h.
486
487 ----------------------------------------
488 15 September 2010. Summary of changes for version 20100915:
489
490 1) ACPI CA Core Subsystem:
491
492 Removed the AcpiOsDerivePciId OSL interface. The various host implementations
493 of this function were not OS-dependent and are now obsolete and can be
494 removed from all host OSLs. This function has been replaced by
495 AcpiHwDerivePciId, which is now part of the ACPICA core code.
496 AcpiHwDerivePciId has been implemented without recursion. Adds one new
497 module, hwpci.c. ACPICA BZ 857.
498
499 Implemented a dynamic repair for _HID and _CID strings. The following
500 problems are now repaired at runtime: 1) Remove a leading asterisk in the
501 string, and 2) the entire string is uppercased. Both repairs are in
502 accordance with the ACPI specification and will simplify host driver code.
503 ACPICA BZ 871.
504
505 The ACPI_THREAD_ID type is no longer configurable, internally it is now
506 always UINT64. This simplifies the ACPICA code, especially any printf output.
507 UINT64 is the only common data type for all thread_id types across all
508 operating systems. It is now up to the host OSL to cast the native thread_id
509 type to UINT64 before returning the value to ACPICA (via AcpiOsGetThreadId).
510 Lin Ming, Bob Moore.
511
512 Added the ACPI_INLINE type to enhance the ACPICA configuration. The "inline"
513 keyword is not standard across compilers, and this type allows inline to be
514 configured on a per-compiler basis. Lin Ming.
515
516 Made the system global AcpiGbl_SystemAwakeAndRunning publically available.
517 Added an extern for this boolean in acpixf.h. Some hosts utilize this value
518 during suspend/restore operations. ACPICA BZ 869.
519
520 All code that implements error/warning messages with the "ACPI:" prefix has
521 been moved to a new module, utxferror.c.
522
523 The UINT64_OVERLAY was moved to utmath.c, which is the only module where it
524 is used. ACPICA BZ 829. Lin Ming, Bob Moore.
525
526 Example Code and Data Size: These are the sizes for the OS-independent
527 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
528 debug version of the code includes the debug output trace mechanism and has a
529 much larger code and data size.
530
531 Previous Release:
532 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
533 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
534 Current Release:
535 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
536 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
537
538 2) iASL Compiler/Disassembler and Tools:
539
540 iASL/Disassembler: Write ACPI errors to stderr instead of the output file.
541 This keeps the output files free of random error messages that may originate
542 from within the namespace/interpreter code. Used this opportunity to merge
543 all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ
544 866. Lin Ming, Bob Moore.
545
546 Tools: update some printfs for ansi warnings on size_t. Handle width change
547 of size_t on 32-bit versus 64-bit generations. Lin Ming.
548
549 ----------------------------------------
550 06 August 2010. Summary of changes for version 20100806:
551
552 1) ACPI CA Core Subsystem:
553
554 Designed and implemented a new host interface to the _OSI support code. This
555 will allow the host to dynamically add or remove multiple _OSI strings, as
556 well as install an optional handler that is called for each _OSI invocation.
557 Also added a new AML debugger command, 'osi' to display and modify the global
558 _OSI string table, and test support in the AcpiExec utility. See the ACPICA
559 reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836.
560 New Functions:
561 AcpiInstallInterface - Add an _OSI string.
562 AcpiRemoveInterface - Delete an _OSI string.
563 AcpiInstallInterfaceHandler - Install optional _OSI handler.
564 Obsolete Functions:
565 AcpiOsValidateInterface - no longer used.
566 New Files:
567 source/components/utilities/utosi.c
568
569 Re-introduced the support to enable multi-byte transfers for Embedded
570 Controller (EC) operation regions. A reported problem was found to be a bug
571 in the host OS, not in the multi-byte support. Previously, the maximum data
572 size passed to the EC operation region handler was a single byte. There are
573 often EC Fields larger than one byte that need to be transferred, and it is
574 useful for the EC driver to lock these as a single transaction. This change
575 enables single transfers larger than 8 bits. This effectively changes the
576 access to the EC space from ByteAcc to AnyAcc, and will probably require
577 changes to the host OS Embedded Controller driver to enable 16/32/64/256-bit
578 transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming.
579
580 Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The
581 prototype in acpiosxf.h had the output value pointer as a (void *).
582 It should be a (UINT64 *). This may affect some host OSL code.
583
584 Fixed a couple problems with the recently modified Linux makefiles for iASL
585 and AcpiExec. These new makefiles place the generated object files in the
586 local directory so that there can be no collisions between the files that are
587 shared between them that are compiled with different options.
588
589 Example Code and Data Size: These are the sizes for the OS-independent
590 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
591 debug version of the code includes the debug output trace mechanism and has a
592 much larger code and data size.
593
594 Previous Release:
595 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
596 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
597 Current Release:
598 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
599 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
600
601 2) iASL Compiler/Disassembler and Tools:
602
603 iASL/Disassembler: Added a new option (-da, "disassemble all") to load the
604 namespace from and disassemble an entire group of AML files. Useful for
605 loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn) and
606 disassembling with one simple command. ACPICA BZ 865. Lin Ming.
607
608 iASL: Allow multiple invocations of -e option. This change allows multiple
609 uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ 834.
610 Lin Ming.
611
612 ----------------------------------------
613 02 July 2010. Summary of changes for version 20100702:
614
615 1) ACPI CA Core Subsystem:
616
617 Implemented several updates to the recently added GPE reference count
618 support. The model for "wake" GPEs is changing to give the host OS complete
619 control of these GPEs. Eventually, the ACPICA core will not execute any _PRW
620 methods, since the host already must execute them. Also, additional changes
621 were made to help ensure that the reference counts are kept in proper
622 synchronization with reality. Rafael J. Wysocki.
623
624 1) Ensure that GPEs are not enabled twice during initialization.
625 2) Ensure that GPE enable masks stay in sync with the reference count.
626 3) Do not inadvertently enable GPEs when writing GPE registers.
627 4) Remove the internal wake reference counter and add new AcpiGpeWakeup
628 interface. This interface will set or clear individual GPEs for wakeup.
629 5) Remove GpeType argument from AcpiEnable and AcpiDisable. These interfaces
630 are now used for "runtime" GPEs only.
631
632 Changed the behavior of the GPE install/remove handler interfaces. The GPE is
633 no longer disabled during this process, as it was found to cause problems on
634 some machines. Rafael J. Wysocki.
635
636 Reverted a change introduced in version 20100528 to enable Embedded
637 Controller multi-byte transfers. This change was found to cause problems with
638 Index Fields and possibly Bank Fields. It will be reintroduced when these
639 problems have been resolved.
640
641 Fixed a problem with references to Alias objects within Package Objects. A
642 reference to an Alias within the definition of a Package was not always
643 resolved properly. Aliases to objects like Processors, Thermal zones, etc.
644 were resolved to the actual object instead of a reference to the object as it
645 should be. Package objects are only allowed to contain integer, string,
646 buffer, package, and reference objects. Redhat bugzilla 608648.
647
648 Example Code and Data Size: These are the sizes for the OS-independent
649 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
650 debug version of the code includes the debug output trace mechanism and has a
651 much larger code and data size.
652
653 Previous Release:
654 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
655 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
656 Current Release:
657 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
658 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
659
660 2) iASL Compiler/Disassembler and Tools:
661
662 iASL: Implemented a new compiler subsystem to allow definition and
663 compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc. These
664 are called "ACPI Data Tables", and the new compiler is the "Data Table
665 Compiler". This compiler is intended to simplify the existing error-prone
666 process of creating these tables for the BIOS, as well as allowing the
667 disassembly, modification, recompilation, and override of existing ACPI data
668 tables. See the iASL User Guide for detailed information.
669
670 iASL: Implemented a new Template Generator option in support of the new Data
671 Table Compiler. This option will create examples of all known ACPI tables
672 that can be used as the basis for table development. See the iASL
673 documentation and the -T option.
674
675 Disassembler and headers: Added support for the WDDT ACPI table (Watchdog
676 Descriptor Table).
677
678 Updated the Linux makefiles for iASL and AcpiExec to place the generated
679 object files in the local directory so that there can be no collisions
680 between the shared files between them that are generated with different
681 options.
682
683 Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec. Use
684 the #define __APPLE__ to enable this support.
685
686 ----------------------------------------
687 28 May 2010. Summary of changes for version 20100528:
688
689 Note: The ACPI 4.0a specification was released on April 5, 2010 and is
690 available at www.acpi.info. This is primarily an errata release.
691
692 1) ACPI CA Core Subsystem:
693
694 Undefined ACPI tables: We are looking for the definitions for the following
695 ACPI tables that have been seen in the field: ATKG, IEIT, GSCI.
696
697 Implemented support to enable multi-byte transfers for Embedded Controller
698 (EC) operation regions. Previously, the maximum data size passed to the EC
699 operation region handler was a single byte. There are often EC Fields larger
700 than one byte that need to be transferred, and it is useful for the EC driver
701 to lock these as a single transaction. This change enables single transfers
702 larger than 8 bits. This effectively changes the access to the EC space from
703 ByteAcc to AnyAcc, and will probably require changes to the host OS Embedded
704 Controller driver to enable 16/32/64/256-bit transfers in addition to 8-bit
705 transfers. Alexey Starikovskiy, Lin Ming
706
707 Implemented a performance enhancement for namespace search and access. This
708 change enhances the performance of namespace searches and walks by adding a
709 backpointer to the parent in each namespace node. On large namespaces, this
710 change can improve overall ACPI performance by up to 9X. Adding a pointer to
711 each namespace node increases the overall size of the internal namespace by
712 about 5%, since each namespace entry usually consists of both a namespace
713 node and an ACPI operand object. However, this is the first growth of the
714 namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy.
715
716 Implemented a performance optimization that reduces the number of namespace
717 walks. On control method exit, only walk the namespace if the method is known
718 to have created namespace objects outside of its local scope. Previously, the
719 entire namespace was traversed on each control method exit. This change can
720 improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob Moore.
721
722 Added support to truncate I/O addresses to 16 bits for Windows compatibility.
723 Some ASL code has been seen in the field that inadvertently has bits set
724 above bit 15. This feature is optional and is enabled if the BIOS requests
725 any Windows OSI strings. It can also be enabled by the host OS. Matthew
726 Garrett, Bob Moore.
727
728 Added support to limit the maximum time for the ASL Sleep() operator. To
729 prevent accidental deep sleeps, limit the maximum time that Sleep() will
730 actually sleep. Configurable, the default maximum is two seconds. ACPICA
731 bugzilla 854.
732
733 Added run-time validation support for the _WDG and_WED Microsoft predefined
734 methods. These objects are defined by "Windows Instrumentation", and are not
735 part of the ACPI spec. ACPICA BZ 860.
736
737 Expanded all statistic counters used during namespace and device
738 initialization from 16 to 32 bits in order to support very large namespaces.
739
740 Replaced all instances of %d in printf format specifiers with %u since nearly
741 all integers in ACPICA are unsigned.
742
743 Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly returned
744 as AE_NO_HANDLER.
745
746 Example Code and Data Size: These are the sizes for the OS-independent
747 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
748 debug version of the code includes the debug output trace mechanism and has a
749 much larger code and data size.
750
751 Previous Release:
752 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
753 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
754 Current Release:
755 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
756 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
757
758 2) iASL Compiler/Disassembler and Tools:
759
760 iASL: Added compiler support for the _WDG and_WED Microsoft predefined
761 methods. These objects are defined by "Windows Instrumentation", and are not
762 part of the ACPI spec. ACPICA BZ 860.
763
764 AcpiExec: added option to disable the memory tracking mechanism. The -dt
765 option will disable the tracking mechanism, which improves performance
766 considerably.
767
768 AcpiExec: Restructured the command line options into -d (disable) and -e
769 (enable) options.
770
771 ----------------------------------------
772 28 April 2010. Summary of changes for version 20100428:
773
774 1) ACPI CA Core Subsystem:
775
776 Implemented GPE support for dynamically loaded ACPI tables. For all GPEs,
777 including FADT-based and GPE Block Devices, execute any _PRW methods in the
778 new table, and process any _Lxx/_Exx GPE methods in the new table. Any
779 runtime GPE that is referenced by an _Lxx/_Exx method in the new table is
780 immediately enabled. Handles the FADT-defined GPEs as well as GPE Block
781 Devices. Provides compatibility with other ACPI implementations. Two new
782 files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob Moore.
783
784 Fixed a regression introduced in version 20100331 within the table manager
785 where initial table loading could fail. This was introduced in the fix for
786 AcpiReallocateRootTable. Also, renamed some of fields in the table manager
787 data structures to clarify their meaning and use.
788
789 Fixed a possible allocation overrun during internal object copy in
790 AcpiUtCopySimpleObject. The original code did not correctly handle the case
791 where the object to be copied was a namespace node. Lin Ming. ACPICA BZ 847.
792
793 Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a
794 possible access beyond end-of-allocation. Also, now fully validate descriptor
795 (size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847
796
797 Example Code and Data Size: These are the sizes for the OS-independent
798 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
799 debug version of the code includes the debug output trace mechanism and has a
800 much larger code and data size.
801
802 Previous Release:
803 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
804 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
805 Current Release:
806 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
807 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
808
809 2) iASL Compiler/Disassembler and Tools:
810
811 iASL: Implemented Min/Max/Len/Gran validation for address resource
812 descriptors. This change implements validation for the address fields that
813 are common to all address-type resource descriptors. These checks are
814 implemented: Checks for valid Min/Max, length within the Min/Max window,
815 valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as per
816 table 6-40 in the ACPI 4.0a specification. Also split the large aslrestype1.c
817 and aslrestype2.c files into five new files. ACPICA BZ 840.
818
819 iASL: Added support for the _Wxx predefined names. This support was missing
820 and these names were not recognized by the compiler as valid predefined
821 names. ACPICA BZ 851.
822
823 iASL: Added an error for all predefined names that are defined to return no
824 value and thus must be implemented as Control Methods. These include all of
825 the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous
826 names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856.
827
828 iASL: Implemented the -ts option to emit hex AML data in ASL format, as an
829 ASL Buffer. Allows ACPI tables to be easily included within ASL files, to be
830 dynamically loaded via the Load() operator. Also cleaned up output for the -
831 ta and -tc options. ACPICA BZ 853.
832
833 Tests: Added a new file with examples of extended iASL error checking.
834 Demonstrates the advanced error checking ability of the iASL compiler.
835 Available at tests/misc/badcode.asl.
836
837 ----------------------------------------
838 31 March 2010. Summary of changes for version 20100331:
839
840 1) ACPI CA Core Subsystem:
841
842 Completed a major update for the GPE support in order to improve support for
843 shared GPEs and to simplify both host OS and ACPICA code. Added a reference
844 count mechanism to support shared GPEs that require multiple device drivers.
845 Several external interfaces have changed. One external interface has been
846 removed. One new external interface was added. Most of the GPE external
847 interfaces now use the GPE spinlock instead of the events mutex (and the
848 Flags parameter for many GPE interfaces has been removed.) See the updated
849 ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore, Rafael
850 Wysocki. ACPICA BZ 831.
851
852 Changed:
853 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus
854 Removed:
855 AcpiSetGpeType
856 New:
857 AcpiSetGpe
858
859 Implemented write support for DataTable operation regions. These regions are
860 defined via the DataTableRegion() operator. Previously, only read support was
861 implemented. The ACPI specification allows DataTableRegions to be read/write,
862 however.
863
864 Implemented a new subsystem option to force a copy of the DSDT to local
865 memory. Optionally copy the entire DSDT to local memory (instead of simply
866 mapping it.) There are some (albeit very rare) BIOSs that corrupt or replace
867 the original DSDT, creating the need for this option. Default is FALSE, do
868 not copy the DSDT.
869
870 Implemented detection of a corrupted or replaced DSDT. This change adds
871 support to detect a DSDT that has been corrupted and/or replaced from outside
872 the OS (by firmware). This is typically catastrophic for the system, but has
873 been seen on some machines. Once this problem has been detected, the DSDT
874 copy option can be enabled via system configuration. Lin Ming, Bob Moore.
875
876 Fixed two problems with AcpiReallocateRootTable during the root table copy.
877 When copying the root table to the new allocation, the length used was
878 incorrect. The new size was used instead of the current table size, meaning
879 too much data was copied. Also, the count of available slots for ACPI tables
880 was not set correctly. Alexey Starikovskiy, Bob Moore.
881
882 Example Code and Data Size: These are the sizes for the OS-independent
883 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
884 debug version of the code includes the debug output trace mechanism and has a
885 much larger code and data size.
886
887 Previous Release:
888 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
889 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
890 Current Release:
891 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
892 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
893
894 2) iASL Compiler/Disassembler and Tools:
895
896 iASL: Implement limited typechecking for values returned from predefined
897 control methods. The type of any returned static (unnamed) object is now
898 validated. For example, Return(1). ACPICA BZ 786.
899
900 iASL: Fixed a predefined name object verification regression. Fixes a problem
901 introduced in version 20100304. An error is incorrectly generated if a
902 predefined name is declared as a static named object with a value defined
903 using the keywords "Zero", "One", or "Ones". Lin Ming.
904
905 iASL: Added Windows 7 support for the -g option (get local ACPI tables) by
906 reducing the requested registry access rights. ACPICA BZ 842.
907
908 Disassembler: fixed a possible fault when generating External() statements.
909 Introduced in commit ae7d6fd: Properly handle externals with parent-prefix
910 (carat). Fixes a string length allocation calculation. Lin Ming.
911
912 ----------------------------------------
913 04 March 2010. Summary of changes for version 20100304:
914
915 1) ACPI CA Core Subsystem:
916
917 Fixed a possible problem with the AML Mutex handling function
918 AcpiExReleaseMutex where the function could fault under the very rare
919 condition when the interpreter has blocked, the interpreter lock is released,
920 the interpreter is then reentered via the same thread, and attempts to
921 acquire an AML mutex that was previously acquired. FreeBSD report 140979. Lin
922 Ming.
923
924 Implemented additional configuration support for the AML "Debug Object".
925 Output from the debug object can now be enabled via a global variable,
926 AcpiGbl_EnableAmlDebugObject. This will assist with remote machine debugging.
927 This debug output is now available in the release version of ACPICA instead
928 of just the debug version. Also, the entire debug output module can now be
929 configured out of the ACPICA build if desired. One new file added,
930 executer/exdebug.c. Lin Ming, Bob Moore.
931
932 Added header support for the ACPI MCHI table (Management Controller Host
933 Interface Table). This table was added in ACPI 4.0, but the defining document
934 has only recently become available.
935
936 Standardized output of integer values for ACPICA warnings/errors. Always use
937 0x prefix for hex output, always use %u for unsigned integer decimal output.
938 Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about 400
939 invocations.) These invocations were converted from the original
940 ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835.
941
942 Example Code and Data Size: These are the sizes for the OS-independent
943 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
944 debug version of the code includes the debug output trace mechanism and has a
945 much larger code and data size.
946
947 Previous Release:
948 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
949 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
950 Current Release:
951 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
952 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
953
954 2) iASL Compiler/Disassembler and Tools:
955
956 iASL: Implemented typechecking support for static (non-control method)
957 predefined named objects that are declared with the Name() operator. For
958 example, the type of this object is now validated to be of type Integer:
959 Name(_BBN, 1). This change migrates the compiler to using the core predefined
960 name table instead of maintaining a local version. Added a new file,
961 aslpredef.c. ACPICA BZ 832.
962
963 Disassembler: Added support for the ACPI 4.0 MCHI table.
964
965 ----------------------------------------
966 21 January 2010. Summary of changes for version 20100121:
967
968 1) ACPI CA Core Subsystem:
969
970 Added the 2010 copyright to all module headers and signons. This affects
971 virtually every file in the ACPICA core subsystem, the iASL compiler, the
972 tools/utilities, and the test suites.
973
974 Implemented a change to the AcpiGetDevices interface to eliminate unnecessary
975 invocations of the _STA method. In the case where a specific _HID is
976 requested, do not run _STA until a _HID match is found. This eliminates
977 potentially dozens of _STA calls during a search for a particular device/HID,
978 which in turn can improve boot times. ACPICA BZ 828. Lin Ming.
979
980 Implemented an additional repair for predefined method return values. Attempt
981 to repair unexpected NULL elements within returned Package objects. Create an
982 Integer of value zero, a NULL String, or a zero-length Buffer as appropriate.
983 ACPICA BZ 818. Lin Ming, Bob Moore.
984
985 Removed the obsolete ACPI_INTEGER data type. This type was introduced as the
986 code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0 (with
987 64-bit AML integers). It is now obsolete and this change removes it from the
988 ACPICA code base, replaced by UINT64. The original typedef has been retained
989 for now for compatibility with existing device driver code. ACPICA BZ 824.
990
991 Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field in
992 the parse tree object.
993
994 Added additional warning options for the gcc-4 generation. Updated the source
995 accordingly. This includes some code restructuring to eliminate unreachable
996 code, elimination of some gotos, elimination of unused return values, some
997 additional casting, and removal of redundant declarations.
998
999 Example Code and Data Size: These are the sizes for the OS-independent
1000 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1001 debug version of the code includes the debug output trace mechanism and has a
1002 much larger code and data size.
1003
1004 Previous Release:
1005 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
1006 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
1007 Current Release:
1008 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
1009 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
1010
1011 2) iASL Compiler/Disassembler and Tools:
1012
1013 No functional changes for this release.
1014
1015 ----------------------------------------
1016 14 December 2009. Summary of changes for version 20091214:
1017
1018 1) ACPI CA Core Subsystem:
1019
1020 Enhanced automatic data type conversions for predefined name repairs. This
1021 change expands the automatic repairs/conversions for predefined name return
1022 values to make Integers, Strings, and Buffers fully interchangeable. Also, a
1023 Buffer can be converted to a Package of Integers if necessary. The nsrepair.c
1024 module was completely restructured. Lin Ming, Bob Moore.
1025
1026 Implemented automatic removal of null package elements during predefined name
1027 repairs. This change will automatically remove embedded and trailing NULL
1028 package elements from returned package objects that are defined to contain a
1029 variable number of sub-packages. The driver is then presented with a package
1030 with no null elements to deal with. ACPICA BZ 819.
1031
1032 Implemented a repair for the predefined _FDE and _GTM names. The expected
1033 return value for both names is a Buffer of 5 DWORDs. This repair fixes two
1034 possible problems (both seen in the field), where a package of integers is
1035 returned, or a buffer of BYTEs is returned. With assistance from Jung-uk Kim.
1036
1037 Implemented additional module-level code support. This change will properly
1038 execute module-level code that is not at the root of the namespace (under a
1039 Device object, etc.). Now executes the code within the current scope instead
1040 of the root. ACPICA BZ 762. Lin Ming.
1041
1042 Fixed possible mutex acquisition errors when running _REG methods. Fixes a
1043 problem where mutex errors can occur when running a _REG method that is in
1044 the same scope as a method-defined operation region or an operation region
1045 under a module-level IF block. This type of code is rare, so the problem has
1046 not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore.
1047
1048 Fixed a possible memory leak during module-level code execution. An object
1049 could be leaked for each block of executed module-level code if the
1050 interpreter slack mode is enabled This change deletes any implicitly returned
1051 object from the module-level code block. Lin Ming.
1052
1053 Removed messages for successful predefined repair(s). The repair mechanism
1054 was considered too wordy. Now, messages are only unconditionally emitted if
1055 the return object cannot be repaired. Existing messages for successful
1056 repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ 827.
1057
1058 Example Code and Data Size: These are the sizes for the OS-independent
1059 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1060 debug version of the code includes the debug output trace mechanism and has a
1061 much larger code and data size.
1062
1063 Previous Release:
1064 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
1065 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
1066 Current Release:
1067 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
1068 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
1069
1070 2) iASL Compiler/Disassembler and Tools:
1071
1072 iASL: Fixed a regression introduced in 20091112 where intermediate .SRC files
1073 were no longer automatically removed at the termination of the compile.
1074
1075 acpiexec: Implemented the -f option to specify default region fill value.
1076 This option specifies the value used to initialize buffers that simulate
1077 operation regions. Default value is zero. Useful for debugging problems that
1078 depend on a specific initial value for a region or field.
1079
1080 ----------------------------------------
1081 12 November 2009. Summary of changes for version 20091112:
1082
1083 1) ACPI CA Core Subsystem:
1084
1085 Implemented a post-order callback to AcpiWalkNamespace. The existing
1086 interface only has a pre-order callback. This change adds an additional
1087 parameter for a post-order callback which will be more useful for bus scans.
1088 ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference.
1089
1090 Modified the behavior of the operation region memory mapping cache for
1091 SystemMemory. Ensure that the memory mappings created for operation regions
1092 do not cross 4K page boundaries. Crossing a page boundary while mapping
1093 regions can cause kernel warnings on some hosts if the pages have different
1094 attributes. Such regions are probably BIOS bugs, and this is the workaround.
1095 Linux BZ 14445. Lin Ming.
1096
1097 Implemented an automatic repair for predefined methods that must return
1098 sorted lists. This change will repair (by sorting) packages returned by _ALR,
1099 _PSS, and _TSS. Drivers can now assume that the packages are correctly sorted
1100 and do not contain NULL package elements. Adds one new file,
1101 namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore.
1102
1103 Fixed a possible fault during predefined name validation if a return Package
1104 object contains NULL elements. Also adds a warning if a NULL element is
1105 followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement may
1106 include repair or removal of all such NULL elements where possible.
1107
1108 Implemented additional module-level executable AML code support. This change
1109 will execute module-level code that is not at the root of the namespace
1110 (under a Device object, etc.) at table load time. Module-level executable AML
1111 code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming.
1112
1113 Implemented a new internal function to create Integer objects. This function
1114 simplifies miscellaneous object creation code. ACPICA BZ 823.
1115
1116 Reduced the severity of predefined repair messages, Warning to Info. Since
1117 the object was successfully repaired, a warning is too severe. Reduced to an
1118 info message for now. These messages may eventually be changed to debug-only.
1119 ACPICA BZ 812.
1120
1121 Example Code and Data Size: These are the sizes for the OS-independent
1122 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1123 debug version of the code includes the debug output trace mechanism and has a
1124 much larger code and data size.
1125
1126 Previous Release:
1127 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
1128 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
1129 Current Release:
1130 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
1131 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
1132
1133 2) iASL Compiler/Disassembler and Tools:
1134
1135 iASL: Implemented Switch() with While(1) so that Break works correctly. This
1136 change correctly implements the Switch operator with a surrounding While(1)
1137 so that the Break operator works as expected. ACPICA BZ 461. Lin Ming.
1138
1139 iASL: Added a message if a package initializer list is shorter than package
1140 length. Adds a new remark for a Package() declaration if an initializer list
1141 exists, but is shorter than the declared length of the package. Although
1142 technically legal, this is probably a coding error and it is seen in the
1143 field. ACPICA BZ 815. Lin Ming, Bob Moore.
1144
1145 iASL: Fixed a problem where the compiler could fault after the maximum number
1146 of errors was reached (200).
1147
1148 acpixtract: Fixed a possible warning for pointer cast if the compiler warning
1149 level set very high.
1150
1151 ----------------------------------------
1152 13 October 2009. Summary of changes for version 20091013:
1153
1154 1) ACPI CA Core Subsystem:
1155
1156 Fixed a problem where an Operation Region _REG method could be executed more
1157 than once. If a custom address space handler is installed by the host before
1158 the "initialize operation regions" phase of the ACPICA initialization, any
1159 _REG methods for that address space could be executed twice. This change
1160 fixes the problem. ACPICA BZ 427. Lin Ming.
1161
1162 Fixed a possible memory leak for the Scope() ASL operator. When the exact
1163 invocation of "Scope(\)" is executed (change scope to root), one internal
1164 operand object was leaked. Lin Ming.
1165
1166 Implemented a run-time repair for the _MAT predefined method. If the _MAT
1167 return value is defined as a Field object in the AML, and the field
1168 size is less than or equal to the default width of an integer (32 or 64),_MAT
1169 can incorrectly return an Integer instead of a Buffer. ACPICA now
1170 automatically repairs this problem. ACPICA BZ 810.
1171
1172 Implemented a run-time repair for the _BIF and _BIX predefined methods. The
1173 "OEM Information" field is often incorrectly returned as an Integer with
1174 value zero if the field is not supported by the platform. This is due to an
1175 ambiguity in the ACPI specification. The field should always be a string.
1176 ACPICA now automatically repairs this problem by returning a NULL string
1177 within the returned Package. ACPICA BZ 807.
1178
1179 Example Code and Data Size: These are the sizes for the OS-independent
1180 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1181 debug version of the code includes the debug output trace mechanism and has a
1182 much larger code and data size.
1183
1184 Previous Release:
1185 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
1186 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
1187 Current Release:
1188 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
1189 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
1190
1191 2) iASL Compiler/Disassembler and Tools:
1192
1193 Disassembler: Fixed a problem where references to external symbols that
1194 contained one or more parent-prefixes (carats) were not handled correctly,
1195 possibly causing a fault. ACPICA BZ 806. Lin Ming.
1196
1197 Disassembler: Restructured the code so that all functions that handle
1198 external symbols are in a single module. One new file is added,
1199 common/dmextern.c.
1200
1201 AML Debugger: Added a max count argument for the Batch command (which
1202 executes multiple predefined methods within the namespace.)
1203
1204 iASL: Updated the compiler documentation (User Reference.) Available at
1205 http://www.acpica.org/documentation/. ACPICA BZ 750.
1206
1207 AcpiXtract: Updated for Lint and other formatting changes. Close all open
1208 files.
1209
1210 ----------------------------------------
1211 03 September 2009. Summary of changes for version 20090903:
1212
1213 1) ACPI CA Core Subsystem:
1214
1215 For Windows Vista compatibility, added the automatic execution of an _INI
1216 method located at the namespace root (\_INI). This method is executed at
1217 table load time. This support is in addition to the automatic execution of
1218 \_SB._INI. Lin Ming.
1219
1220 Fixed a possible memory leak in the interpreter for AML package objects if
1221 the package initializer list is longer than the defined size of the package.
1222 This apparently can only happen if the BIOS changes the package size on the
1223 fly (seen in a _PSS object), as ASL compilers do not allow this. The
1224 interpreter will truncate the package to the defined size (and issue an error
1225 message), but previously could leave the extra objects undeleted if they were
1226 pre-created during the argument processing (such is the case if the package
1227 consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805.
1228
1229 Fixed a problem seen when a Buffer or String is stored to itself via ASL.
1230 This has been reported in the field. Previously, ACPICA would zero out the
1231 buffer/string. Now, the operation is treated as a noop. Provides Windows
1232 compatibility. ACPICA BZ 803. Lin Ming.
1233
1234 Removed an extraneous error message for ASL constructs of the form
1235 Store(LocalX,LocalX) when LocalX is uninitialized. These curious statements
1236 are seen in many BIOSs and are once again treated as NOOPs and no error is
1237 emitted when they are encountered. ACPICA BZ 785.
1238
1239 Fixed an extraneous warning message if a _DSM reserved method returns a
1240 Package object. _DSM can return any type of object, so validation on the
1241 return type cannot be performed. ACPICA BZ 802.
1242
1243 Example Code and Data Size: These are the sizes for the OS-independent
1244 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1245 debug version of the code includes the debug output trace mechanism and has a
1246 much larger code and data size.
1247
1248 Previous Release:
1249 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
1250 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
1251 Current Release:
1252 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
1253 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
1254
1255 2) iASL Compiler/Disassembler and Tools:
1256
1257 iASL: Fixed a problem with the use of the Alias operator and Resource
1258 Templates. The correct alias is now constructed and no error is emitted.
1259 ACPICA BZ 738.
1260
1261 iASL: Implemented the -I option to specify additional search directories for
1262 include files. Allows multiple additional search paths for include files.
1263 Directories are searched in the order specified on the command line (after
1264 the local directory is searched.) ACPICA BZ 800.
1265
1266 iASL: Fixed a problem where the full pathname for include files was not
1267 emitted for warnings/errors. This caused the IDE support to not work
1268 properly. ACPICA BZ 765.
1269
1270 iASL: Implemented the -@ option to specify a Windows-style response file
1271 containing additional command line options. ACPICA BZ 801.
1272
1273 AcpiExec: Added support to load multiple AML files simultaneously (such as a
1274 DSDT and multiple SSDTs). Also added support for wildcards within the AML
1275 pathname. These features allow all machine tables to be easily loaded and
1276 debugged together. ACPICA BZ 804.
1277
1278 Disassembler: Added missing support for disassembly of HEST table Error Bank
1279 subtables.
1280
1281 ----------------------------------------
1282 30 July 2009. Summary of changes for version 20090730:
1283
1284 The ACPI 4.0 implementation for ACPICA is complete with this release.
1285
1286 1) ACPI CA Core Subsystem:
1287
1288 ACPI 4.0: Added header file support for all new and changed ACPI tables.
1289 Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are new
1290 for ACPI 4.0, but have previously been supported in ACPICA are: CPEP, BERT,
1291 EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT. There
1292 have been some ACPI 4.0 changes to other existing tables. Split the large
1293 actbl1.h header into the existing actbl2.h header. ACPICA BZ 774.
1294
1295 ACPI 4.0: Implemented predefined name validation for all new names. There are
1296 31 new names in ACPI 4.0. The predefined validation module was split into two
1297 files. The new file is namespace/nsrepair.c. ACPICA BZ 770.
1298
1299 Implemented support for so-called "module-level executable code". This is
1300 executable AML code that exists outside of any control method and is intended
1301 to be executed at table load time. Although illegal since ACPI 2.0, this type
1302 of code still exists and is apparently still being created. Blocks of this
1303 code are now detected and executed as intended. Currently, the code blocks
1304 must exist under either an If, Else, or While construct; these are the
1305 typical cases seen in the field. ACPICA BZ 762. Lin Ming.
1306
1307 Implemented an automatic dynamic repair for predefined names that return
1308 nested Package objects. This applies to predefined names that are defined to
1309 return a variable-length Package of sub-packages. If the number of sub-
1310 packages is one, BIOS code is occasionally seen that creates a simple single
1311 package with no sub-packages. This code attempts to fix the problem by
1312 wrapping a new package object around the existing package. These methods can
1313 be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA BZ
1314 790.
1315
1316 Fixed a regression introduced in 20090625 for the AcpiGetDevices interface.
1317 The _HID/_CID matching was broken and no longer matched IDs correctly. ACPICA
1318 BZ 793.
1319
1320 Fixed a problem with AcpiReset where the reset would silently fail if the
1321 register was one of the protected I/O ports. AcpiReset now bypasses the port
1322 validation mechanism. This may eventually be driven into the AcpiRead/Write
1323 interfaces.
1324
1325 Fixed a regression related to the recent update of the AcpiRead/Write
1326 interfaces. A sleep/suspend could fail if the optional PM2 Control register
1327 does not exist during an attempt to write the Bus Master Arbitration bit.
1328 (However, some hosts already delete the code that writes this bit, and the
1329 code may in fact be obsolete at this date.) ACPICA BZ 799.
1330
1331 Fixed a problem where AcpiTerminate could fault if inadvertently called twice
1332 in succession. ACPICA BZ 795.
1333
1334 Example Code and Data Size: These are the sizes for the OS-independent
1335 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1336 debug version of the code includes the debug output trace mechanism and has a
1337 much larger code and data size.
1338
1339 Previous Release:
1340 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
1341 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
1342 Current Release:
1343 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
1344 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
1345
1346 2) iASL Compiler/Disassembler and Tools:
1347
1348 ACPI 4.0: Implemented disassembler support for all new ACPI tables and
1349 changes to existing tables. ACPICA BZ 775.
1350
1351 ----------------------------------------
1352 25 June 2009. Summary of changes for version 20090625:
1353
1354 The ACPI 4.0 Specification was released on June 16 and is available at
1355 www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will
1356 continue for the next few releases.
1357
1358 1) ACPI CA Core Subsystem:
1359
1360 ACPI 4.0: Implemented interpreter support for the IPMI operation region
1361 address space. Includes support for bi-directional data buffers and an IPMI
1362 address space handler (to be installed by an IPMI device driver.) ACPICA BZ
1363 773. Lin Ming.
1364
1365 ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT. Includes
1366 support in both the header files and the disassembler.
1367
1368 Completed a major update for the AcpiGetObjectInfo external interface.
1369 Changes include:
1370 - Support for variable, unlimited length HID, UID, and CID strings.
1371 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA, etc.)
1372 - Call the _SxW power methods on behalf of a device object.
1373 - Determine if a device is a PCI root bridge.
1374 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO.
1375 These changes will require an update to all callers of this interface. See
1376 the updated ACPICA Programmer Reference for details. One new source file has
1377 been added - utilities/utids.c. ACPICA BZ 368, 780.
1378
1379 Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit
1380 transfers. The Value parameter has been extended from 32 bits to 64 bits in
1381 order to support new ACPI 4.0 tables. These changes will require an update to
1382 all callers of these interfaces. See the ACPICA Programmer Reference for
1383 details. ACPICA BZ 768.
1384
1385 Fixed several problems with AcpiAttachData. The handler was not invoked when
1386 the host node was deleted. The data sub-object was not automatically deleted
1387 when the host node was deleted. The interface to the handler had an unused
1388 parameter, this was removed. ACPICA BZ 778.
1389
1390 Enhanced the function that dumps ACPI table headers. All non-printable
1391 characters in the string fields are now replaced with '?' (Signature, OemId,
1392 OemTableId, and CompilerId.) ACPI tables with non-printable characters in
1393 these fields are occasionally seen in the field. ACPICA BZ 788.
1394
1395 Fixed a problem with predefined method repair code where the code that
1396 attempts to repair/convert an object of incorrect type is only executed on
1397 the first time the predefined method is called. The mechanism that disables
1398 warnings on subsequent calls was interfering with the repair mechanism.
1399 ACPICA BZ 781.
1400
1401 Fixed a possible memory leak in the predefined validation/repair code when a
1402 buffer is automatically converted to an expected string object.
1403
1404 Removed obsolete 16-bit files from the distribution and from the current git
1405 tree head. ACPICA BZ 776.
1406
1407 Example Code and Data Size: These are the sizes for the OS-independent
1408 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1409 debug version of the code includes the debug output trace mechanism and has a
1410 much larger code and data size.
1411
1412 Previous Release:
1413 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
1414 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
1415 Current Release:
1416 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
1417 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
1418
1419 2) iASL Compiler/Disassembler and Tools:
1420
1421 ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI
1422 operation region keyword. ACPICA BZ 771, 772. Lin Ming.
1423
1424 ACPI 4.0: iASL - implemented compile-time validation support for all new
1425 predefined names and control methods (31 total). ACPICA BZ 769.
1426
1427 ----------------------------------------
1428 21 May 2009. Summary of changes for version 20090521:
1429
1430 1) ACPI CA Core Subsystem:
1431
1432 Disabled the preservation of the SCI enable bit in the PM1 control register.
1433 The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification to be
1434 a "preserved" bit - "OSPM always preserves this bit position", section
1435 4.7.3.2.1. However, some machines fail if this bit is in fact preserved
1436 because the bit needs to be explicitly set by the OS as a workaround. No
1437 machines fail if the bit is not preserved. Therefore, ACPICA no longer
1438 attempts to preserve this bit.
1439
1440 Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or
1441 incorrectly formed _PRT package could cause a fault. Added validation to
1442 ensure that each package element is actually a sub-package.
1443
1444 Implemented a new interface to install or override a single control method,
1445 AcpiInstallMethod. This interface is useful when debugging in order to repair
1446 an existing method or to install a missing method without having to override
1447 the entire ACPI table. See the ACPICA Programmer Reference for use and
1448 examples. Lin Ming, Bob Moore.
1449
1450 Fixed several reference count issues with the DdbHandle object that is
1451 created from a Load or LoadTable operator. Prevent premature deletion of the
1452 object. Also, mark the object as invalid once the table has been unloaded.
1453 This is needed because the handle itself may not be deleted after the table
1454 unload, depending on whether it has been stored in a named object by the
1455 caller. Lin Ming.
1456
1457 Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple
1458 mutexes of the same sync level are acquired but then not released in strict
1459 opposite order, the internally maintained Current Sync Level becomes confused
1460 and can cause subsequent execution errors. ACPICA BZ 471.
1461
1462 Changed the allowable release order for ASL mutex objects. The ACPI 4.0
1463 specification has been changed to make the SyncLevel for mutex objects more
1464 useful. When releasing a mutex, the SyncLevel of the mutex must now be the
1465 same as the current sync level. This makes more sense than the previous rule
1466 (SyncLevel less than or equal). This change updates the code to match the
1467 specification.
1468
1469 Fixed a problem with the local version of the AcpiOsPurgeCache function. The
1470 (local) cache must be locked during all cache object deletions. Andrew
1471 Baumann.
1472
1473 Updated the Load operator to use operation region interfaces. This replaces
1474 direct memory mapping with region access calls. Now, all region accesses go
1475 through the installed region handler as they should.
1476
1477 Simplified and optimized the NsGetNextNode function. Reduced parameter count
1478 and reduced code for this frequently used function.
1479
1480 Example Code and Data Size: These are the sizes for the OS-independent
1481 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1482 debug version of the code includes the debug output trace mechanism and has a
1483 much larger code and data size.
1484
1485 Previous Release:
1486 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
1487 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
1488 Current Release:
1489 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
1490 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
1491
1492 2) iASL Compiler/Disassembler and Tools:
1493
1494 Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some problems
1495 with sub-table disassembly and handling invalid sub-tables. Attempt recovery
1496 after an invalid sub-table ID.
1497
1498 ----------------------------------------
1499 22 April 2009. Summary of changes for version 20090422:
1500
1501 1) ACPI CA Core Subsystem:
1502
1503 Fixed a compatibility issue with the recently released I/O port protection
1504 mechanism. For windows compatibility, 1) On a port protection violation,
1505 simply ignore the request and do not return an exception (allow the control
1506 method to continue execution.) 2) If only part of the request overlaps a
1507 protected port, read/write the individual ports that are not protected. Linux
1508 BZ 13036. Lin Ming
1509
1510 Enhanced the execution of the ASL/AML BreakPoint operator so that it actually
1511 breaks into the AML debugger if the debugger is present. This matches the
1512 ACPI-defined behavior.
1513
1514 Fixed several possible warnings related to the use of the configurable
1515 ACPI_THREAD_ID. This type can now be configured as either an integer or a
1516 pointer with no warnings. Also fixes several warnings in printf-like
1517 statements for the 64-bit build when the type is configured as a pointer.
1518 ACPICA BZ 766, 767.
1519
1520 Fixed a number of possible warnings when compiling with gcc 4+ (depending on
1521 warning options.) Examples include printf formats, aliasing, unused globals,
1522 missing prototypes, missing switch default statements, use of non-ANSI
1523 library functions, use of non-ANSI constructs. See generate/unix/Makefile for
1524 a list of warning options used with gcc 3 and 4. ACPICA BZ 735.
1525
1526 Example Code and Data Size: These are the sizes for the OS-independent
1527 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1528 debug version of the code includes the debug output trace mechanism and has a
1529 much larger code and data size.
1530
1531 Previous Release:
1532 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
1533 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
1534 Current Release:
1535 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
1536 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
1537
1538 2) iASL Compiler/Disassembler and Tools:
1539
1540 iASL: Fixed a generation warning from Bison 2.3 and fixed several warnings on
1541 the 64-bit build.
1542
1543 iASL: Fixed a problem where the Unix/Linux versions of the compiler could not
1544 correctly digest Windows/DOS formatted files (with CR/LF).
1545
1546 iASL: Added a new option for "quiet mode" (-va) that produces only the
1547 compilation summary, not individual errors and warnings. Useful for large
1548 batch compilations.
1549
1550 AcpiExec: Implemented a new option (-z) to enable a forced semaphore/mutex
1551 timeout that can be used to detect hang conditions during execution of AML
1552 code (includes both internal semaphores and AML-defined mutexes and events.)
1553
1554 Added new makefiles for the generation of acpica in a generic unix-like
1555 environment. These makefiles are intended to generate the acpica tools and
1556 utilities from the original acpica git source tree structure.
1557
1558 Test Suites: Updated and cleaned up the documentation files. Updated the
1559 copyrights to 2009, affecting all source files. Use the new version of iASL
1560 with quiet mode. Increased the number of available semaphores in the Windows
1561 OSL, allowing the aslts to execute fully on Windows. For the Unix OSL, added
1562 an alternate implementation of the semaphore timeout to allow aslts to
1563 execute fully on Cygwin.
1564
1565 ----------------------------------------
1566 20 March 2009. Summary of changes for version 20090320:
1567
1568 1) ACPI CA Core Subsystem:
1569
1570 Fixed a possible race condition between AcpiWalkNamespace and dynamic table
1571 unloads. Added a reader/writer locking mechanism to allow multiple concurrent
1572 namespace walks (readers), but block a dynamic table unload until it can gain
1573 exclusive write access to the namespace. This fixes a problem where a table
1574 unload could (possibly catastrophically) delete the portion of the namespace
1575 that is currently being examined by a walk. Adds a new file, utlock.c, that
1576 implements the reader/writer lock mechanism. ACPICA BZ 749.
1577
1578 Fixed a regression introduced in version 20090220 where a change to the FADT
1579 handling could cause the ACPICA subsystem to access non-existent I/O ports.
1580
1581 Modified the handling of FADT register and table (FACS/DSDT) addresses. The
1582 FADT can contain both 32-bit and 64-bit versions of these addresses.
1583 Previously, the 64-bit versions were favored, meaning that if both 32 and 64
1584 versions were valid, but not equal, the 64-bit version was used. This was
1585 found to cause some machines to fail. Now, in this case, the 32-bit version
1586 is used instead. This now matches the Windows behavior.
1587
1588 Implemented a new mechanism to protect certain I/O ports. Provides Microsoft
1589 compatibility and protects the standard PC I/O ports from access via AML
1590 code. Adds a new file, hwvalid.c
1591
1592 Fixed a possible extraneous warning message from the FADT support. The
1593 message warns of a 32/64 length mismatch between the legacy and GAS
1594 definitions for a register.
1595
1596 Removed the obsolete AcpiOsValidateAddress OSL interface. This interface is
1597 made obsolete by the port protection mechanism above. It was previously used
1598 to validate the entire address range of an operation region, which could be
1599 incorrect if the range included illegal ports, but fields within the
1600 operation region did not actually access those ports. Validation is now
1601 performed on a per-field basis instead of the entire region.
1602
1603 Modified the handling of the PM1 Status Register ignored bit (bit 11.)
1604 Ignored bits must be "preserved" according to the ACPI spec. Usually, this
1605 means a read/modify/write when writing to the register. However, for status
1606 registers, writing a one means clear the event. Writing a zero means preserve
1607 the event (do not clear.) This behavior is clarified in the ACPI 4.0 spec,
1608 and the ACPICA code now simply always writes a zero to the ignored bit.
1609
1610 Modified the handling of ignored bits for the PM1 A/B Control Registers. As
1611 per the ACPI specification, for the control registers, preserve
1612 (read/modify/write) all bits that are defined as either reserved or ignored.
1613
1614 Updated the handling of write-only bits in the PM1 A/B Control Registers.
1615 When reading the register, zero the write-only bits as per the ACPI spec.
1616 ACPICA BZ 443. Lin Ming.
1617
1618 Removed "Linux" from the list of supported _OSI strings. Linux no longer
1619 wants to reply true to this request. The Windows strings are the only paths
1620 through the AML that are tested and known to work properly.
1621
1622 Previous Release:
1623 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
1624 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
1625 Current Release:
1626 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
1627 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
1628
1629 2) iASL Compiler/Disassembler and Tools:
1630
1631 Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c and
1632 aetables.c
1633
1634 ----------------------------------------
1635 20 February 2009. Summary of changes for version 20090220:
1636
1637 1) ACPI CA Core Subsystem:
1638
1639 Optimized the ACPI register locking. Removed locking for reads from the ACPI
1640 bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock is
1641 not required when reading the single-bit registers. The
1642 AcpiGetRegisterUnlocked function is no longer needed and has been removed.
1643 This will improve performance for reads on these registers. ACPICA BZ 760.
1644
1645 Fixed the parameter validation for AcpiRead/Write. Now return
1646 AE_BAD_PARAMETER if the input register pointer is null, and AE_BAD_ADDRESS if
1647 the register has an address of zero. Previously, these cases simply returned
1648 AE_OK. For optional registers such as PM1B status/enable/control, the caller
1649 should check for a valid register address before calling. ACPICA BZ 748.
1650
1651 Renamed the external ACPI bit register access functions. Renamed
1652 AcpiGetRegister and AcpiSetRegister to clarify the purpose of these
1653 functions. The new names are AcpiReadBitRegister and AcpiWriteBitRegister.
1654 Also, restructured the code for these functions by simplifying the code path
1655 and condensing duplicate code to reduce code size.
1656
1657 Added new functions to transparently handle the possibly split PM1 A/B
1658 registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two functions
1659 now handle the split registers for PM1 Status, Enable, and Control. ACPICA BZ
1660 746.
1661
1662 Added a function to handle the PM1 control registers, AcpiHwWritePm1Control.
1663 This function writes both of the PM1 control registers (A/B). These registers
1664 are different than the PM1 A/B status and enable registers in that different
1665 values can be written to the A/B registers. Most notably, the SLP_TYP bits
1666 can be different, as per the values returned from the _Sx predefined methods.
1667
1668 Removed an extra register write within AcpiHwClearAcpiStatus. This function
1669 was writing an optional PM1B status register twice. The existing call to the
1670 low-level AcpiHwRegisterWrite automatically handles a possibly split PM1 A/B
1671 register. ACPICA BZ 751.
1672
1673 Split out the PM1 Status registers from the FADT. Added new globals for these
1674 registers (A/B), similar to the way the PM1 Enable registers are handled.
1675 Instead of overloading the FADT Event Register blocks. This makes the code
1676 clearer and less prone to error.
1677
1678 Fixed the warning message for when the platform contains too many ACPI tables
1679 for the default size of the global root table data structure. The calculation
1680 for the truncation value was incorrect.
1681
1682 Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this
1683 obsolete macro, since it is now a simple reference to ->common.type. There
1684 were about 150 invocations of the macro across 41 files. ACPICA BZ 755.
1685
1686 Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as
1687 TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to
1688 simply SLEEP_TYPE. ACPICA BZ 754.
1689
1690 Conditionally compile the AcpiSetFirmwareWakingVector64 function. This
1691 function is only needed on 64-bit host operating systems and is thus not
1692 included for 32-bit hosts.
1693
1694 Debug output: print the input and result for invocations of the _OSI reserved
1695 control method via the ACPI_LV_INFO debug level. Also, reduced some of the
1696 verbosity of this debug level. Len Brown.
1697
1698 Example Code and Data Size: These are the sizes for the OS-independent
1699 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1700 debug version of the code includes the debug output trace mechanism and has a
1701 much larger code and data size.
1702
1703 Previous Release:
1704 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
1705 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
1706 Current Release:
1707 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
1708 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
1709
1710 2) iASL Compiler/Disassembler and Tools:
1711
1712 Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the
1713 various legal performance profiles.
1714
1715 ----------------------------------------
1716 23 January 2009. Summary of changes for version 20090123:
1717
1718 1) ACPI CA Core Subsystem:
1719
1720 Added the 2009 copyright to all module headers and signons. This affects
1721 virtually every file in the ACPICA core subsystem, the iASL compiler, and
1722 the tools/utilities.
1723
1724 Implemented a change to allow the host to override any ACPI table, including
1725 dynamically loaded tables. Previously, only the DSDT could be replaced by the
1726 host. With this change, the AcpiOsTableOverride interface is called for each
1727 table found in the RSDT/XSDT during ACPICA initialization, and also whenever
1728 a table is dynamically loaded via the AML Load operator.
1729
1730 Updated FADT flag definitions, especially the Boot Architecture flags.
1731
1732 Debugger: For the Find command, automatically pad the input ACPI name with
1733 underscores if the name is shorter than 4 characters. This enables a match
1734 with the actual namespace entry which is itself padded with underscores.
1735
1736 Example Code and Data Size: These are the sizes for the OS-independent
1737 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1738 debug version of the code includes the debug output trace mechanism and has a
1739 much larger code and data size.
1740
1741 Previous Release:
1742 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
1743 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
1744 Current Release:
1745 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
1746 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
1747
1748 2) iASL Compiler/Disassembler and Tools:
1749
1750 Fix build error under Bison-2.4.
1751
1752 Dissasembler: Enhanced FADT support. Added decoding of the Boot Architecture
1753 flags. Now decode all flags, regardless of the FADT version. Flag output
1754 includes the FADT version which first defined each flag.
1755
1756 The iASL -g option now dumps the RSDT to a file (in addition to the FADT and
1757 DSDT). Windows only.
1758
1759 ----------------------------------------
1760 04 December 2008. Summary of changes for version 20081204:
1761
1762 1) ACPI CA Core Subsystem:
1763
1764 The ACPICA Programmer Reference has been completely updated and revamped for
1765 this release. This includes updates to the external interfaces, OSL
1766 interfaces, the overview sections, and the debugger reference.
1767
1768 Several new ACPICA interfaces have been implemented and documented in the
1769 programmer reference:
1770 AcpiReset - Writes the reset value to the FADT-defined reset register.
1771 AcpiDisableAllGpes - Disable all available GPEs.
1772 AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs.
1773 AcpiGetGpeDevice - Get the GPE block device associated with a GPE.
1774 AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs.
1775 AcpiRead - Low-level read ACPI register (was HwLowLevelRead.)
1776 AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.)
1777
1778 Most of the public ACPI hardware-related interfaces have been moved to a new
1779 file, components/hardware/hwxface.c
1780
1781 Enhanced the FADT parsing and low-level ACPI register access: The ACPI
1782 register lengths within the FADT are now used, and the low level ACPI
1783 register access no longer hardcodes the ACPI register lengths. Given that
1784 there may be some risk in actually trusting the FADT register lengths, a run-
1785 time option was added to fall back to the default hardcoded lengths if the
1786 FADT proves to contain incorrect values - UseDefaultRegisterWidths. This
1787 option is set to true for now, and a warning is issued if a suspicious FADT
1788 register length is overridden with the default value.
1789
1790 Fixed a reference count issue in NsRepairObject. This problem was introduced
1791 in version 20081031 as part of a fix to repair Buffer objects within
1792 Packages. Lin Ming.
1793
1794 Added semaphore support to the Linux/Unix application OS-services layer
1795 (OSL). ACPICA BZ 448. Lin Ming.
1796
1797 Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes will
1798 be implemented in the OSL, or will binary semaphores be used instead.
1799
1800 Example Code and Data Size: These are the sizes for the OS-independent
1801 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1802 debug version of the code includes the debug output trace mechanism and has a
1803 much larger code and data size.
1804
1805 Previous Release:
1806 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
1807 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
1808 Current Release:
1809 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
1810 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
1811
1812 2) iASL Compiler/Disassembler and Tools:
1813
1814 iASL: Completed the '-e' option to include additional ACPI tables in order to
1815 aid with disassembly and External statement generation. ACPICA BZ 742. Lin
1816 Ming.
1817
1818 iASL: Removed the "named object in while loop" error. The compiler cannot
1819 determine how many times a loop will execute. ACPICA BZ 730.
1820
1821 Disassembler: Implemented support for FADT revision 2 (MS extension). ACPICA
1822 BZ 743.
1823
1824 Disassembler: Updates for several ACPI data tables (HEST, EINJ, and MCFG).
1825
1826 ----------------------------------------
1827 31 October 2008. Summary of changes for version 20081031:
1828
1829 1) ACPI CA Core Subsystem:
1830
1831 Restructured the ACPICA header files into public/private. acpi.h now includes
1832 only the "public" acpica headers. All other acpica headers are "private" and
1833 should not be included by acpica users. One new file, accommon.h is used to
1834 include the commonly used private headers for acpica code generation. Future
1835 plans include moving all private headers to a new subdirectory.
1836
1837 Implemented an automatic Buffer->String return value conversion for
1838 predefined ACPI methods. For these methods (such as _BIF), added automatic
1839 conversion for return objects that are required to be a String, but a Buffer
1840 was found instead. This can happen when reading string battery data from an
1841 operation region, because it used to be difficult to convert the data from
1842 buffer to string from within the ASL. Ensures that the host OS is provided
1843 with a valid null-terminated string. Linux BZ 11822.
1844
1845 Updated the FACS waking vector interfaces. Split AcpiSetFirmwareWakingVector
1846 into two: one for the 32-bit vector, another for the 64-bit vector. This is
1847 required because the host OS must setup the wake much differently for each
1848 vector (real vs. protected mode, etc.) and the interface itself should not be
1849 deciding which vector to use. Also, eliminated the GetFirmwareWakingVector
1850 interface, as it served no purpose (only the firmware reads the vector, OS
1851 only writes the vector.) ACPICA BZ 731.
1852
1853 Implemented a mechanism to escape infinite AML While() loops. Added a loop
1854 counter to force exit from AML While loops if the count becomes too large.
1855 This can occur in poorly written AML when the hardware does not respond
1856 within a while loop and the loop does not implement a timeout. The maximum
1857 loop count is configurable. A new exception code is returned when a loop is
1858 broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore.
1859
1860 Optimized the execution of AML While loops. Previously, a control state
1861 object was allocated and freed for each execution of the loop. The
1862 optimization is to simply reuse the control state for each iteration. This
1863 speeds up the raw loop execution time by about 5%.
1864
1865 Enhanced the implicit return mechanism. For Windows compatibility, return an
1866 implicit integer of value zero for methods that contain no executable code.
1867 Such methods are seen in the field as stubs (presumably), and can cause
1868 drivers to fail if they expect a return value. Lin Ming.
1869
1870 Allow multiple backslashes as root prefixes in namepaths. In a fully
1871 qualified namepath, allow multiple backslash prefixes. This can happen (and
1872 is seen in the field) because of the use of a double-backslash in strings
1873 (since backslash is the escape character) causing confusion. ACPICA BZ 739
1874 Lin Ming.
1875
1876 Emit a warning if two different FACS or DSDT tables are discovered in the
1877 FADT. Checks if there are two valid but different addresses for the FACS and
1878 DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.)
1879
1880 Consolidated the method argument count validation code. Merged the code that
1881 validates control method argument counts into the predefined validation
1882 module. Eliminates possible multiple warnings for incorrect argument counts.
1883
1884 Implemented ACPICA example code. Includes code for ACPICA initialization,
1885 handler installation, and calling a control method. Available at
1886 source/tools/examples.
1887
1888 Added a global pointer for FACS table to simplify internal FACS access. Use
1889 the global pointer instead of using AcpiGetTableByIndex for each FACS access.
1890 This simplifies the code for the Global Lock and the Firmware Waking
1891 Vector(s).
1892
1893 Example Code and Data Size: These are the sizes for the OS-independent
1894 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1895 debug version of the code includes the debug output trace mechanism and has a
1896 much larger code and data size.
1897
1898 Previous Release:
1899 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
1900 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
1901 Current Release:
1902 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
1903 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
1904
1905 2) iASL Compiler/Disassembler and Tools:
1906
1907 iASL: Improved disassembly of external method calls. Added the -e option to
1908 allow the inclusion of additional ACPI tables to help with the disassembly of
1909 method invocations and the generation of external declarations during the
1910 disassembly. Certain external method invocations cannot be disassembled
1911 properly without the actual declaration of the method. Use the -e option to
1912 include the table where the external method(s) are actually declared. Most
1913 useful for disassembling SSDTs that make method calls back to the master
1914 DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl -d
1915 -e dsdt.aml ssdt1.aml
1916
1917 iASL: Fix to allow references to aliases within ASL namepaths. Fixes a
1918 problem where the use of an alias within a namepath would result in a not
1919 found error or cause the compiler to fault. Also now allows forward
1920 references from the Alias operator itself. ACPICA BZ 738.
1921
1922 ----------------------------------------
1923 26 September 2008. Summary of changes for version 20080926:
1924
1925 1) ACPI CA Core Subsystem:
1926
1927 Designed and implemented a mechanism to validate predefined ACPI methods and
1928 objects. This code validates the predefined ACPI objects (objects whose names
1929 start with underscore) that appear in the namespace, at the time they are
1930 evaluated. The argument count and the type of the returned object are
1931 validated against the ACPI specification. The purpose of this validation is
1932 to detect problems with the BIOS-implemented predefined ACPI objects before
1933 the results are returned to the ACPI-related drivers. Future enhancements may
1934 include actual repair of incorrect return objects where possible. Two new
1935 files are nspredef.c and acpredef.h.
1936
1937 Fixed a fault in the AML parser if a memory allocation fails during the Op
1938 completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492.
1939
1940 Fixed an issue with implicit return compatibility. This change improves the
1941 implicit return mechanism to be more compatible with the MS interpreter. Lin
1942 Ming, ACPICA BZ 349.
1943
1944 Implemented support for zero-length buffer-to-string conversions. Allow zero
1945 length strings during interpreter buffer-to-string conversions. For example,
1946 during the ToDecimalString and ToHexString operators, as well as implicit
1947 conversions. Fiodor Suietov, ACPICA BZ 585.
1948
1949 Fixed two possible memory leaks in the error exit paths of
1950 AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions are
1951 similar in that they use a stack of state objects in order to eliminate
1952 recursion. The stack must be fully unwound and deallocated if an error
1953 occurs. Lin Ming. ACPICA BZ 383.
1954
1955 Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the global
1956 ACPI register table. This bit does not exist and is unused. Lin Ming, Bob
1957 Moore ACPICA BZ 442.
1958
1959 Removed the obsolete version number in module headers. Removed the
1960 "$Revision" number that appeared in each module header. This version number
1961 was useful under SourceSafe and CVS, but has no meaning under git. It is not
1962 only incorrect, it could also be misleading.
1963
1964 Example Code and Data Size: These are the sizes for the OS-independent
1965 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
1966 debug version of the code includes the debug output trace mechanism and has a
1967 much larger code and data size.
1968
1969 Previous Release:
1970 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
1971 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
1972 Current Release:
1973 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
1974 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
1975
1976 ----------------------------------------
1977 29 August 2008. Summary of changes for version 20080829:
1978
1979 1) ACPI CA Core Subsystem:
1980
1981 Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type
1982 Reference. Changes include the elimination of cheating on the Object field
1983 for the DdbHandle subtype, addition of a reference class field to
1984 differentiate the various reference types (instead of an AML opcode), and the
1985 cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723
1986
1987 Reduce an error to a warning for an incorrect method argument count.
1988 Previously aborted with an error if too few arguments were passed to a
1989 control method via the external ACPICA interface. Now issue a warning instead
1990 and continue. Handles the case where the method inadvertently declares too
1991 many arguments, but does not actually use the extra ones. Applies mainly to
1992 the predefined methods. Lin Ming. Linux BZ 11032.
1993
1994 Disallow the evaluation of named object types with no intrinsic value. Return
1995 AE_TYPE for objects that have no value and therefore evaluation is undefined:
1996 Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation of
1997 these types were allowed, but an exception would be generated at some point
1998 during the evaluation. Now, the error is generated up front.
1999
2000 Fixed a possible memory leak in the AcpiNsGetExternalPathname function
2001 (nsnames.c). Fixes a leak in the error exit path.
2002
2003 Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These debug
2004 levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and ACPI_EXCEPTION
2005 interfaces. Also added ACPI_DB_EVENTS to correspond with the existing
2006 ACPI_LV_EVENTS.
2007
2008 Removed obsolete and/or unused exception codes from the acexcep.h header.
2009 There is the possibility that certain device drivers may be affected if they
2010 use any of these exceptions.
2011
2012 The ACPICA documentation has been added to the public git source tree, under
2013 acpica/documents. Included are the ACPICA programmer reference, the iASL
2014 compiler reference, and the changes.txt release logfile.
2015
2016 Example Code and Data Size: These are the sizes for the OS-independent
2017 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2018 debug version of the code includes the debug output trace mechanism and has a
2019 much larger code and data size.
2020
2021 Previous Release:
2022 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
2023 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
2024 Current Release:
2025 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
2026 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
2027
2028 2) iASL Compiler/Disassembler and Tools:
2029
2030 Allow multiple argument counts for the predefined _SCP method. ACPI 3.0
2031 defines _SCP with 3 arguments. Previous versions defined it with only 1
2032 argument. iASL now allows both definitions.
2033
2034 iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for zero-
2035 length subtables when disassembling ACPI tables. Also fixed a couple of
2036 errors where a full 16-bit table type field was not extracted from the input
2037 properly.
2038
2039 acpisrc: Improve comment counting mechanism for generating source code
2040 statistics. Count first and last lines of multi-line comments as whitespace,
2041 not comment lines. Handle Linux legal header in addition to standard acpica
2042 header.
2043
2044 ----------------------------------------
2045
2046 29 July 2008. Summary of changes for version 20080729:
2047
2048 1) ACPI CA Core Subsystem:
2049
2050 Fix a possible deadlock in the GPE dispatch. Remove call to
2051 AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will attempt
2052 to acquire the GPE lock but can deadlock since the GPE lock is already held
2053 at dispatch time. This code was introduced in version 20060831 as a response
2054 to Linux BZ 6881 and has since been removed from Linux.
2055
2056 Add a function to dereference returned reference objects. Examines the return
2057 object from a call to AcpiEvaluateObject. Any Index or RefOf references are
2058 automatically dereferenced in an attempt to return something useful (these
2059 reference types cannot be converted into an external ACPI_OBJECT.) Provides
2060 MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105
2061
2062 x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new
2063 subtables for the MADT and one new subtable for the SRAT. Includes
2064 disassembler and AcpiSrc support. Data from the Intel 64 Architecture x2APIC
2065 Specification, June 2008.
2066
2067 Additional error checking for pathname utilities. Add error check after all
2068 calls to AcpiNsGetPathnameLength. Add status return from
2069 AcpiNsBuildExternalPath and check after all calls. Add parameter validation
2070 to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar.
2071
2072 Return status from the global init function AcpiUtGlobalInitialize. This is
2073 used by both the kernel subsystem and the utilities such as iASL compiler.
2074 The function could possibly fail when the caches are initialized. Yang Yi.
2075
2076 Add a function to decode reference object types to strings. Created for
2077 improved error messages.
2078
2079 Improve object conversion error messages. Better error messages during object
2080 conversion from internal to the external ACPI_OBJECT. Used for external calls
2081 to AcpiEvaluateObject.
2082
2083 Example Code and Data Size: These are the sizes for the OS-independent
2084 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2085 debug version of the code includes the debug output trace mechanism and has a
2086 much larger code and data size.
2087
2088 Previous Release:
2089 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
2090 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
2091 Current Release:
2092 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
2093 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
2094
2095 2) iASL Compiler/Disassembler and Tools:
2096
2097 Debugger: fix a possible hang when evaluating non-methods. Fixes a problem
2098 introduced in version 20080701. If the object being evaluated (via execute
2099 command) is not a method, the debugger can hang while trying to obtain non-
2100 existent parameters.
2101
2102 iASL: relax error for using reserved "_T_x" identifiers. These names can
2103 appear in a disassembled ASL file if they were emitted by the original
2104 compiler. Instead of issuing an error or warning and forcing the user to
2105 manually change these names, issue a remark instead.
2106
2107 iASL: error if named object created in while loop. Emit an error if any named
2108 object is created within a While loop. If allowed, this code will generate a
2109 run-time error on the second iteration of the loop when an attempt is made to
2110 create the same named object twice. ACPICA bugzilla 730.
2111
2112 iASL: Support absolute pathnames for include files. Add support for absolute
2113 pathnames within the Include operator. previously, only relative pathnames
2114 were supported.
2115
2116 iASL: Enforce minimum 1 interrupt in interrupt macro and Resource Descriptor.
2117 The ACPI spec requires one interrupt minimum. BZ 423
2118
2119 iASL: Handle a missing ResourceSource arg, with a present SourceIndex.
2120 Handles the case for the Interrupt Resource Descriptor where
2121 the ResourceSource argument is omitted but ResourceSourceIndex
2122 is present. Now leave room for the Index. BZ 426
2123
2124 iASL: Prevent error message if CondRefOf target does not exist. Fixes cases
2125 where an error message is emitted if the target does not exist. BZ 516
2126
2127 iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option
2128 (get ACPI tables on Windows). This was apparently broken in version 20070919.
2129
2130 AcpiXtract: Handle EOF while extracting data. Correctly handle the case where
2131 the EOF happens immediately after the last table in the input file. Print
2132 completion message. Previously, no message was displayed in this case.
2133
2134 ----------------------------------------
2135 01 July 2008. Summary of changes for version 20080701:
2136
2137 0) Git source tree / acpica.org
2138
2139 Fixed a problem where a git-clone from http would not transfer the entire
2140 source tree.
2141
2142 1) ACPI CA Core Subsystem:
2143
2144 Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one
2145 enable bit. Now performs a read-change-write of the enable register instead
2146 of simply writing out the cached enable mask. This will prevent inadvertent
2147 enabling of GPEs if a rogue GPE is received during initialization (before GPE
2148 handlers are installed.)
2149
2150 Implemented a copy for dynamically loaded tables. Previously, dynamically
2151 loaded tables were simply mapped - but on some machines this memory is
2152 corrupted after suspend. Now copy the table to a local buffer. For the
2153 OpRegion case, added checksum verify. Use the table length from the table
2154 header, not the region length. For the Buffer case, use the table length
2155 also. Dennis Noordsij, Bob Moore. BZ 10734
2156
2157 Fixed a problem where the same ACPI table could not be dynamically loaded and
2158 unloaded more than once. Without this change, a table cannot be loaded again
2159 once it has been loaded/unloaded one time. The current mechanism does not
2160 unregister a table upon an unload. During a load, if the same table is found,
2161 this no longer returns an exception. BZ 722
2162
2163 Fixed a problem where the wrong descriptor length was calculated for the
2164 EndTag descriptor in 64-bit mode. The "minimal" descriptors such as EndTag
2165 are calculated as 12 bytes long, but the actual length in the internal
2166 descriptor is 16 because of the round-up to 8 on the 64-bit build. Reported
2167 by Linn Crosetto. BZ 728
2168
2169 Fixed a possible memory leak in the Unload operator. The DdbHandle returned
2170 by Load() did not have its reference count decremented during unload, leading
2171 to a memory leak. Lin Ming. BZ 727
2172
2173 Fixed a possible memory leak when deleting thermal/processor objects. Any
2174 associated notify handlers (and objects) were not being deleted. Fiodor
2175 Suietov. BZ 506
2176
2177 Fixed the ordering of the ASCII names in the global mutex table to match the
2178 actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug only.
2179 Vegard Nossum. BZ 726
2180
2181 Enhanced the AcpiGetObjectInfo interface to return the number of required
2182 arguments if the object is a control method. Added this call to the debugger
2183 so the proper number of default arguments are passed to a method. This
2184 prevents a warning when executing methods from AcpiExec.
2185
2186 Added a check for an invalid handle in AcpiGetObjectInfo. Return
2187 AE_BAD_PARAMETER if input handle is invalid. BZ 474
2188
2189 Fixed an extraneous warning from exconfig.c on the 64-bit build.
2190
2191 Example Code and Data Size: These are the sizes for the OS-independent
2192 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2193 debug version of the code includes the debug output trace mechanism and has a
2194 much larger code and data size.
2195
2196 Previous Release:
2197 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
2198 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
2199 Current Release:
2200 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
2201 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
2202
2203 2) iASL Compiler/Disassembler and Tools:
2204
2205 iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both
2206 resource descriptor names.
2207
2208 iASL: Detect invalid ASCII characters in input (windows version). Removed the
2209 "-CF" flag from the flex compile, enables correct detection of non-ASCII
2210 characters in the input. BZ 441
2211
2212 iASL: Eliminate warning when result of LoadTable is not used. Eliminate the
2213 "result of operation not used" warning when the DDB handle returned from
2214 LoadTable is not used. The warning is not needed. BZ 590
2215
2216 AcpiExec: Add support for dynamic table load/unload. Now calls _CFG method to
2217 pass address of table to the AML. Added option to disable OpRegion simulation
2218 to allow creation of an OpRegion with a real address that was passed to _CFG.
2219 All of this allows testing of the Load and Unload operators from AcpiExec.
2220
2221 Debugger: update tables command for unloaded tables. Handle unloaded tables
2222 and use the standard table header output routine.
2223
2224 ----------------------------------------
2225 09 June 2008. Summary of changes for version 20080609:
2226
2227 1) ACPI CA Core Subsystem:
2228
2229 Implemented a workaround for reversed _PRT entries. A significant number of
2230 BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This
2231 change dynamically detects and repairs this problem. Provides compatibility
2232 with MS ACPI. BZ 6859
2233
2234 Simplified the internal ACPI hardware interfaces to eliminate the locking
2235 flag parameter from Register Read/Write. Added a new external interface,
2236 AcpiGetRegisterUnlocked.
2237
2238 Fixed a problem where the invocation of a GPE control method could hang. This
2239 was a regression introduced in 20080514. The new method argument count
2240 validation mechanism can enter an infinite loop when a GPE method is
2241 dispatched. Problem fixed by removing the obsolete code that passed GPE block
2242 information to the notify handler via the control method parameter pointer.
2243
2244 Fixed a problem where the _SST execution status was incorrectly returned to
2245 the caller of AcpiEnterSleepStatePrep. This was a regression introduced in
2246 20080514. _SST is optional and a NOT_FOUND exception should never be
2247 returned. BZ 716
2248
2249 Fixed a problem where a deleted object could be accessed from within the AML
2250 parser. This was a regression introduced in version 20080123 as a fix for the
2251 Unload operator. Lin Ming. BZ 10669
2252
2253 Cleaned up the debug operand dump mechanism. Eliminated unnecessary operands
2254 and eliminated the use of a negative index in a loop. Operands are now
2255 displayed in the correct order, not backwards. This also fixes a regression
2256 introduced in 20080514 on 64-bit systems where the elimination of
2257 ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ 715
2258
2259 Fixed a possible memory leak in EvPciConfigRegionSetup where the error exit
2260 path did not delete a locally allocated structure.
2261
2262 Updated definitions for the DMAR and SRAT tables to synchronize with the
2263 current specifications. Includes disassembler support.
2264
2265 Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect
2266 loop termination value was used. Loop terminated on iteration early, missing
2267 one mutex. Linn Crosetto
2268
2269 Example Code and Data Size: These are the sizes for the OS-independent
2270 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2271 debug version of the code includes the debug output trace mechanism and has a
2272 much larger code and data size.
2273
2274 Previous Release:
2275 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
2276 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
2277 Current Release:
2278 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
2279 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
2280
2281 2) iASL Compiler/Disassembler and Tools:
2282
2283 Disassembler: Implemented support for EisaId() within _CID objects. Now
2284 disassemble integer _CID objects back to EisaId invocations, including
2285 multiple integers within _CID packages. Includes single-step support for
2286 debugger also.
2287
2288 Disassembler: Added support for DMAR and SRAT table definition changes.
2289
2290 ----------------------------------------
2291 14 May 2008. Summary of changes for version 20080514:
2292
2293 1) ACPI CA Core Subsystem:
2294
2295 Fixed a problem where GPEs were enabled too early during the ACPICA
2296 initialization. This could lead to "handler not installed" errors on some
2297 machines. Moved GPE enable until after _REG/_STA/_INI methods are run. This
2298 ensures that all operation regions and devices throughout the namespace have
2299 been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916.
2300
2301 Implemented a change to the enter sleep code. Moved execution of the _GTS
2302 method to just before setting sleep enable bit. The execution was moved from
2303 AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed
2304 immediately before the SLP_EN bit is set, as per the ACPI specification.
2305 Luming Yu, BZ 1653.
2306
2307 Implemented a fix to disable unknown GPEs (2nd version). Now always disable
2308 the GPE, even if ACPICA thinks that that it is already disabled. It is
2309 possible that the AML or some other code has enabled the GPE unbeknownst to
2310 the ACPICA code.
2311
2312 Fixed a problem with the Field operator where zero-length fields would return
2313 an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length ASL
2314 field declarations in Field(), BankField(), and IndexField(). BZ 10606.
2315
2316 Implemented a fix for the Load operator, now load the table at the namespace
2317 root. This reverts a change introduced in version 20071019. The table is now
2318 loaded at the namespace root even though this goes against the ACPI
2319 specification. This provides compatibility with other ACPI implementations.
2320 The ACPI specification will be updated to reflect this in ACPI 4.0. Lin Ming.
2321
2322 Fixed a problem where ACPICA would not Load() tables with unusual signatures.
2323 Now ignore ACPI table signature for Load() operator. Only "SSDT" is
2324 acceptable to the ACPI spec, but tables are seen with OEMx and null sigs.
2325 Therefore, signature validation is worthless. Apparently MS ACPI accepts such
2326 signatures, ACPICA must be compatible. BZ 10454.
2327
2328 Fixed a possible negative array index in AcpiUtValidateException. Added NULL
2329 fields to the exception string arrays to eliminate a -1 subtraction on the
2330 SubStatus field.
2331
2332 Updated the debug tracking macros to reduce overall code and data size.
2333 Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings
2334 instead of pointers to static strings. Jan Beulich and Bob Moore.
2335
2336 Implemented argument count checking in control method invocation via
2337 AcpiEvaluateObject. Now emit an error if too few arguments, warning if too
2338 many. This applies only to extern programmatic control method execution, not
2339 method-to-method calls within the AML. Lin Ming.
2340
2341 Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is no
2342 longer needed, especially with the removal of 16-bit support. It was replaced
2343 mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64 bit on
2344 32/64-bit platforms is required.
2345
2346 Added the C const qualifier for appropriate string constants -- mostly
2347 MODULE_NAME and printf format strings. Jan Beulich.
2348
2349 Example Code and Data Size: These are the sizes for the OS-independent
2350 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2351 debug version of the code includes the debug output trace mechanism and has a
2352 much larger code and data size.
2353
2354 Previous Release:
2355 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
2356 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
2357 Current Release:
2358 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
2359 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
2360
2361 2) iASL Compiler/Disassembler and Tools:
2362
2363 Implemented ACPI table revision ID validation in the disassembler. Zero is
2364 always invalid. For DSDTs, the ID controls the interpreter integer width. 1
2365 means 32-bit and this is unusual. 2 or greater is 64-bit.
2366
2367 ----------------------------------------
2368 21 March 2008. Summary of changes for version 20080321:
2369
2370 1) ACPI CA Core Subsystem:
2371
2372 Implemented an additional change to the GPE support in order to suppress
2373 spurious or stray GPEs. The AcpiEvDisableGpe function will now permanently
2374 disable incoming GPEs that are neither enabled nor disabled -- meaning that
2375 the GPE is unknown to the system. This should prevent future interrupt floods
2376 from that GPE. BZ 6217 (Zhang Rui)
2377
2378 Fixed a problem where NULL package elements were not returned to the
2379 AcpiEvaluateObject interface correctly. The element was simply ignored
2380 instead of returning a NULL ACPI_OBJECT package element, potentially causing
2381 a buffer overflow and/or confusing the caller who expected a fixed number of
2382 elements. BZ 10132 (Lin Ming, Bob Moore)
2383
2384 Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word, Dword,
2385 Qword), Field, BankField, and IndexField operators when invoked from inside
2386 an executing control method. In this case, these operators created namespace
2387 nodes that were incorrectly left marked as permanent nodes instead of
2388 temporary nodes. This could cause a problem if there is race condition
2389 between an exiting control method and a running namespace walk. (Reported by
2390 Linn Crosetto)
2391
2392 Fixed a problem where the CreateField and CreateXXXField operators would
2393 incorrectly allow duplicate names (the name of the field) with no exception
2394 generated.
2395
2396 Implemented several changes for Notify handling. Added support for new Notify
2397 values (ACPI 2.0+) and improved the Notify debug output. Notify on
2398 PowerResource objects is no longer allowed, as per the ACPI specification.
2399 (Bob Moore, Zhang Rui)
2400
2401 All Reference Objects returned via the AcpiEvaluateObject interface are now
2402 marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved for
2403 NULL objects - either NULL package elements or unresolved named references.
2404
2405 Fixed a problem where an extraneous debug message was produced for package
2406 objects (when debugging enabled). The message "Package List length larger
2407 than NumElements count" is now produced in the correct case, and is now an
2408 error message rather than a debug message. Added a debug message for the
2409 opposite case, where NumElements is larger than the Package List (the package
2410 will be padded out with NULL elements as per the ACPI spec.)
2411
2412 Implemented several improvements for the output of the ASL "Debug" object to
2413 clarify and keep all data for a given object on one output line.
2414
2415 Fixed two size calculation issues with the variable-length Start Dependent
2416 resource descriptor.
2417
2418 Example Code and Data Size: These are the sizes for the OS-independent
2419 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2420 debug version of the code includes the debug output trace mechanism and has
2421 a much larger code and data size.
2422
2423 Previous Release:
2424 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
2425 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
2426 Current Release:
2427 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
2428 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
2429
2430 2) iASL Compiler/Disassembler and Tools:
2431
2432 Fixed a problem with the use of the Switch operator where execution of the
2433 containing method by multiple concurrent threads could cause an
2434 AE_ALREADY_EXISTS exception. This is caused by the fact that there is no
2435 actual Switch opcode, it must be simulated with local named temporary
2436 variables and if/else pairs. The solution chosen was to mark any method that
2437 uses Switch as Serialized, thus preventing multiple thread entries. BZ 469.
2438
2439 ----------------------------------------
2440 13 February 2008. Summary of changes for version 20080213:
2441
2442 1) ACPI CA Core Subsystem:
2443
2444 Implemented another MS compatibility design change for GPE/Notify handling.
2445 GPEs are now cleared/enabled asynchronously to allow all pending notifies to
2446 complete first. It is expected that the OSL will queue the enable request
2447 behind all pending notify requests (may require changes to the local host OSL
2448 in AcpiOsExecute). Alexey Starikovskiy.
2449
2450 Fixed a problem where buffer and package objects passed as arguments to a
2451 control method via the external AcpiEvaluateObject interface could cause an
2452 AE_AML_INTERNAL exception depending on the order and type of operators
2453 executed by the target control method.
2454
2455 Fixed a problem where resource descriptor size optimization could cause a
2456 problem when a _CRS resource template is passed to a _SRS method. The _SRS
2457 resource template must use the same descriptors (with the same size) as
2458 returned from _CRS. This change affects the following resource descriptors:
2459 IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ 9487)
2460
2461 Fixed a problem where a CopyObject to RegionField, BankField, and IndexField
2462 objects did not perform an implicit conversion as it should. These types must
2463 retain their initial type permanently as per the ACPI specification. However,
2464 a CopyObject to all other object types should not perform an implicit
2465 conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388
2466
2467 Fixed a problem with the AcpiGetDevices interface where the mechanism to
2468 match device CIDs did not examine the entire list of available CIDs, but
2469 instead aborted on the first non-matching CID. Andrew Patterson.
2470
2471 Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro was
2472 inadvertently changed to return a 16-bit value instead of a 32-bit value,
2473 truncating the upper dword of a 64-bit value. This macro is only used to
2474 display debug output, so no incorrect calculations were made. Also,
2475 reimplemented the macro so that a 64-bit shift is not performed by
2476 inefficient compilers.
2477
2478 Added missing va_end statements that should correspond with each va_start
2479 statement.
2480
2481 Example Code and Data Size: These are the sizes for the OS-independent
2482 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2483 debug version of the code includes the debug output trace mechanism and has
2484 a much larger code and data size.
2485
2486 Previous Release:
2487 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
2488 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
2489 Current Release:
2490 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
2491 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
2492
2493 2) iASL Compiler/Disassembler and Tools:
2494
2495 Implemented full disassembler support for the following new ACPI tables:
2496 BERT, EINJ, and ERST. Implemented partial disassembler support for the
2497 complicated HEST table. These tables support the Windows Hardware Error
2498 Architecture (WHEA).
2499
2500 ----------------------------------------
2501 23 January 2008. Summary of changes for version 20080123:
2502
2503 1) ACPI CA Core Subsystem:
2504
2505 Added the 2008 copyright to all module headers and signons. This affects
2506 virtually every file in the ACPICA core subsystem, the iASL compiler, and
2507 the tools/utilities.
2508
2509 Fixed a problem with the SizeOf operator when used with Package and Buffer
2510 objects. These objects have deferred execution for some arguments, and the
2511 execution is now completed before the SizeOf is executed. This problem caused
2512 unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore) BZ
2513 9558
2514
2515 Implemented an enhancement to the interpreter "slack mode". In the absence of
2516 an explicit return or an implicitly returned object from the last executed
2517 opcode, a control method will now implicitly return an integer of value 0 for
2518 Microsoft compatibility. (Lin Ming) BZ 392
2519
2520 Fixed a problem with the Load operator where an exception was not returned in
2521 the case where the table is already loaded. (Lin Ming) BZ 463
2522
2523 Implemented support for the use of DDBHandles as an Indexed Reference, as per
2524 the ACPI spec. (Lin Ming) BZ 486
2525
2526 Implemented support for UserTerm (Method invocation) for the Unload operator
2527 as per the ACPI spec. (Lin Ming) BZ 580
2528
2529 Fixed a problem with the LoadTable operator where the OemId and OemTableId
2530 input strings could cause unexpected failures if they were shorter than the
2531 maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576
2532
2533 Implemented support for UserTerm (Method invocation) for the Unload operator
2534 as per the ACPI spec. (Lin Ming) BZ 580
2535
2536 Implemented header file support for new ACPI tables - BERT, ERST, EINJ, HEST,
2537 IBFT, UEFI, WDAT. Disassembler support is forthcoming.
2538
2539 Example Code and Data Size: These are the sizes for the OS-independent
2540 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2541 debug version of the code includes the debug output trace mechanism and has
2542 a much larger code and data size.
2543
2544 Previous Release:
2545 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
2546 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
2547 Current Release:
2548 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
2549 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
2550
2551 2) iASL Compiler/Disassembler and Tools:
2552
2553 Implemented support in the disassembler for checksum validation on incoming
2554 binary DSDTs and SSDTs. If incorrect, a message is displayed within the table
2555 header dump at the start of the disassembly.
2556
2557 Implemented additional debugging information in the namespace listing file
2558 created during compilation. In addition to the namespace hierarchy, the full
2559 pathname to each namespace object is displayed.
2560
2561 Fixed a problem with the disassembler where invalid ACPI tables could cause
2562 faults or infinite loops.
2563
2564 Fixed an unexpected parse error when using the optional "parameter types"
2565 list in a control method declaration. (Lin Ming) BZ 397
2566
2567 Fixed a problem where two External declarations with the same name did not
2568 cause an error (Lin Ming) BZ 509
2569
2570 Implemented support for full TermArgs (adding Argx, Localx and method
2571 invocation) for the ParameterData parameter to the LoadTable operator. (Lin
2572 Ming) BZ 583,587
2573
2574 ----------------------------------------
2575 19 December 2007. Summary of changes for version 20071219:
2576
2577 1) ACPI CA Core Subsystem:
2578
2579 Implemented full support for deferred execution for the TermArg string
2580 arguments for DataTableRegion. This enables forward references and full
2581 operand resolution for the three string arguments. Similar to OperationRegion
2582 deferred argument execution.) Lin Ming. BZ 430
2583
2584 Implemented full argument resolution support for the BankValue argument to
2585 BankField. Previously, only constants were supported, now any TermArg may be
2586 used. Lin Ming BZ 387, 393
2587
2588 Fixed a problem with AcpiGetDevices where the search of a branch of the
2589 device tree could be terminated prematurely. In accordance with the ACPI
2590 specification, the search down the current branch is terminated if a device
2591 is both not present and not functional (instead of just not present.) Yakui
2592 Zhao.
2593
2594 Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly if
2595 the underlying AML code changed the GPE enable registers. Now, any unknown
2596 incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately disabled
2597 instead of simply ignored. Rui Zhang.
2598
2599 Fixed a problem with Index Fields where the Index register was incorrectly
2600 limited to a maximum of 32 bits. Now any size may be used.
2601
2602 Fixed a couple memory leaks associated with "implicit return" objects when
2603 the AML Interpreter slack mode is enabled. Lin Ming BZ 349
2604
2605 Example Code and Data Size: These are the sizes for the OS-independent
2606 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2607 debug version of the code includes the debug output trace mechanism and has
2608 a much larger code and data size.
2609
2610 Previous Release:
2611 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
2612 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
2613 Current Release:
2614 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
2615 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
2616
2617 ----------------------------------------
2618 14 November 2007. Summary of changes for version 20071114:
2619
2620 1) ACPI CA Core Subsystem:
2621
2622 Implemented event counters for each of the Fixed Events, the ACPI SCI
2623 (interrupt) itself, and control methods executed. Named
2624 AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively. These
2625 should be useful for debugging and statistics.
2626
2627 Implemented a new external interface, AcpiGetStatistics, to retrieve the
2628 contents of the various event counters. Returns the current values for
2629 AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and
2630 AcpiMethodCount. The interface can be expanded in the future if new counters
2631 are added. Device drivers should use this interface rather than access the
2632 counters directly.
2633
2634 Fixed a problem with the FromBCD and ToBCD operators. With some compilers,
2635 the ShortDivide function worked incorrectly, causing problems with the BCD
2636 functions with large input values. A truncation from 64-bit to 32-bit
2637 inadvertently occurred. Internal BZ 435. Lin Ming
2638
2639 Fixed a problem with Index references passed as method arguments. References
2640 passed as arguments to control methods were dereferenced immediately (before
2641 control was passed to the called method). The references are now correctly
2642 passed directly to the called method. BZ 5389. Lin Ming
2643
2644 Fixed a problem with CopyObject used in conjunction with the Index operator.
2645 The reference was incorrectly dereferenced before the copy. The reference is
2646 now correctly copied. BZ 5391. Lin Ming
2647
2648 Fixed a problem with Control Method references within Package objects. These
2649 references are now correctly generated. This completes the package
2650 construction overhaul that began in version 20071019.
2651
2652 Example Code and Data Size: These are the sizes for the OS-independent
2653 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2654 debug version of the code includes the debug output trace mechanism and has
2655 a much larger code and data size.
2656
2657 Previous Release:
2658 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
2659 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
2660 Current Release:
2661 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
2662 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
2663
2664
2665 2) iASL Compiler/Disassembler and Tools:
2666
2667 The AcpiExec utility now installs handlers for all of the predefined
2668 Operation Region types. New types supported are: PCI_Config, CMOS, and
2669 PCIBARTarget.
2670
2671 Fixed a problem with the 64-bit version of AcpiExec where the extended (64-
2672 bit) address fields for the DSDT and FACS within the FADT were not being
2673 used, causing truncation of the upper 32-bits of these addresses. Lin Ming
2674 and Bob Moore
2675
2676 ----------------------------------------
2677 19 October 2007. Summary of changes for version 20071019:
2678
2679 1) ACPI CA Core Subsystem:
2680
2681 Fixed a problem with the Alias operator when the target of the alias is a
2682 named ASL operator that opens a new scope -- Scope, Device, PowerResource,
2683 Processor, and ThermalZone. In these cases, any children of the original
2684 operator could not be accessed via the alias, potentially causing unexpected
2685 AE_NOT_FOUND exceptions. (BZ 9067)
2686
2687 Fixed a problem with the Package operator where all named references were
2688 created as object references and left otherwise unresolved. According to the
2689 ACPI specification, a Package can only contain Data Objects or references to
2690 control methods. The implication is that named references to Data Objects
2691 (Integer, Buffer, String, Package, BufferField, Field) should be resolved
2692 immediately upon package creation. This is the approach taken with this
2693 change. References to all other named objects (Methods, Devices, Scopes,
2694 etc.) are all now properly created as reference objects. (BZ 5328)
2695
2696 Reverted a change to Notify handling that was introduced in version
2697 20070508. This version changed the Notify handling from asynchronous to
2698 fully synchronous (Device driver Notify handling with respect to the Notify
2699 ASL operator). It was found that this change caused more problems than it
2700 solved and was removed by most users.
2701
2702 Fixed a problem with the Increment and Decrement operators where the type of
2703 the target object could be unexpectedly and incorrectly changed. (BZ 353)
2704 Lin Ming.
2705
2706 Fixed a problem with the Load and LoadTable operators where the table
2707 location within the namespace was ignored. Instead, the table was always
2708 loaded into the root or current scope. Lin Ming.
2709
2710 Fixed a problem with the Load operator when loading a table from a buffer
2711 object. The input buffer was prematurely zeroed and/or deleted. (BZ 577)
2712
2713 Fixed a problem with the Debug object where a store of a DdbHandle reference
2714 object to the Debug object could cause a fault.
2715
2716 Added a table checksum verification for the Load operator, in the case where
2717 the load is from a buffer. (BZ 578).
2718
2719 Implemented additional parameter validation for the LoadTable operator. The
2720 length of the input strings SignatureString, OemIdString, and OemTableId are
2721 now checked for maximum lengths. (BZ 582) Lin Ming.
2722
2723 Example Code and Data Size: These are the sizes for the OS-independent
2724 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2725 debug version of the code includes the debug output trace mechanism and has
2726 a much larger code and data size.
2727
2728 Previous Release:
2729 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
2730 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
2731 Current Release:
2732 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
2733 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
2734
2735
2736 2) iASL Compiler/Disassembler:
2737
2738 Fixed a problem where if a single file was specified and the file did not
2739 exist, no error message was emitted. (Introduced with wildcard support in
2740 version 20070917.)
2741
2742 ----------------------------------------
2743 19 September 2007. Summary of changes for version 20070919:
2744
2745 1) ACPI CA Core Subsystem:
2746
2747 Designed and implemented new external interfaces to install and remove
2748 handlers for ACPI table-related events. Current events that are defined are
2749 LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as
2750 they are dynamically loaded and unloaded. See AcpiInstallTableHandler and
2751 AcpiRemoveTableHandler. (Lin Ming and Bob Moore)
2752
2753 Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag
2754 (acpi_serialized option on Linux) could cause some systems to hang during
2755 initialization. (Bob Moore) BZ 8171
2756
2757 Fixed a problem where objects of certain types (Device, ThermalZone,
2758 Processor, PowerResource) can be not found if they are declared and
2759 referenced from within the same control method (Lin Ming) BZ 341
2760
2761 Example Code and Data Size: These are the sizes for the OS-independent
2762 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2763 debug version of the code includes the debug output trace mechanism and has
2764 a much larger code and data size.
2765
2766 Previous Release:
2767 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
2768 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
2769 Current Release:
2770 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
2771 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
2772
2773
2774 2) iASL Compiler/Disassembler:
2775
2776 Implemented support to allow multiple files to be compiled/disassembled in a
2777 single invocation. This includes command line wildcard support for both the
2778 Windows and Unix versions of the compiler. This feature simplifies the
2779 disassembly and compilation of multiple ACPI tables in a single directory.
2780
2781 ----------------------------------------
2782 08 May 2007. Summary of changes for version 20070508:
2783
2784 1) ACPI CA Core Subsystem:
2785
2786 Implemented a Microsoft compatibility design change for the handling of the
2787 Notify AML operator. Previously, notify handlers were dispatched and
2788 executed completely asynchronously in a deferred thread. The new design
2789 still executes the notify handlers in a different thread, but the original
2790 thread that executed the Notify() now waits at a synchronization point for
2791 the notify handler to complete. Some machines depend on a synchronous Notify
2792 operator in order to operate correctly.
2793
2794 Implemented support to allow Package objects to be passed as method
2795 arguments to the external AcpiEvaluateObject interface. Previously, this
2796 would return the AE_NOT_IMPLEMENTED exception. This feature had not been
2797 implemented since there were no reserved control methods that required it
2798 until recently.
2799
2800 Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs that
2801 contained invalid non-zero values in reserved fields could cause later
2802 failures because these fields have meaning in later revisions of the FADT.
2803 For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The fields
2804 are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.)
2805
2806 Fixed a problem where the Global Lock handle was not properly updated if a
2807 thread that acquired the Global Lock via executing AML code then attempted
2808 to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by Joe
2809 Liu.
2810
2811 Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list
2812 could be corrupted if the interrupt being removed was at the head of the
2813 list. Reported by Linn Crosetto.
2814
2815 Example Code and Data Size: These are the sizes for the OS-independent
2816 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2817 debug version of the code includes the debug output trace mechanism and has
2818 a much larger code and data size.
2819
2820 Previous Release:
2821 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
2822 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
2823 Current Release:
2824 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
2825 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
2826
2827 ----------------------------------------
2828 20 March 2007. Summary of changes for version 20070320:
2829
2830 1) ACPI CA Core Subsystem:
2831
2832 Implemented a change to the order of interpretation and evaluation of AML
2833 operand objects within the AML interpreter. The interpreter now evaluates
2834 operands in the order that they appear in the AML stream (and the
2835 corresponding ASL code), instead of in the reverse order (after the entire
2836 operand list has been parsed). The previous behavior caused several subtle
2837 incompatibilities with the Microsoft AML interpreter as well as being
2838 somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov.
2839
2840 Implemented a change to the ACPI Global Lock support. All interfaces to the
2841 global lock now allow the same thread to acquire the lock multiple times.
2842 This affects the AcpiAcquireGlobalLock external interface to the global lock
2843 as well as the internal use of the global lock to support AML fields -- a
2844 control method that is holding the global lock can now simultaneously access
2845 AML fields that require global lock protection. Previously, in both cases,
2846 this would have resulted in an AE_ALREADY_ACQUIRED exception. The change to
2847 AcpiAcquireGlobalLock is of special interest to drivers for the Embedded
2848 Controller. There is no change to the behavior of the AML Acquire operator,
2849 as this can already be used to acquire a mutex multiple times by the same
2850 thread. BZ 8066. With assistance from Alexey Starikovskiy.
2851
2852 Fixed a problem where invalid objects could be referenced in the AML
2853 Interpreter after error conditions. During operand evaluation, ensure that
2854 the internal "Return Object" field is cleared on error and only valid
2855 pointers are stored there. Caused occasional access to deleted objects that
2856 resulted in "large reference count" warning messages. Valery Podrezov.
2857
2858 Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur on
2859 deeply nested control method invocations. BZ 7873, local BZ 487. Valery
2860 Podrezov.
2861
2862 Fixed an internal problem with the handling of result objects on the
2863 interpreter result stack. BZ 7872. Valery Podrezov.
2864
2865 Removed obsolete code that handled the case where AML_NAME_OP is the target
2866 of a reference (Reference.Opcode). This code was no longer necessary. BZ
2867 7874. Valery Podrezov.
2868
2869 Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This was a
2870 remnant from the previously discontinued 16-bit support.
2871
2872 Example Code and Data Size: These are the sizes for the OS-independent
2873 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2874 debug version of the code includes the debug output trace mechanism and has
2875 a much larger code and data size.
2876
2877 Previous Release:
2878 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
2879 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
2880 Current Release:
2881 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
2882 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
2883
2884 ----------------------------------------
2885 26 January 2007. Summary of changes for version 20070126:
2886
2887 1) ACPI CA Core Subsystem:
2888
2889 Added the 2007 copyright to all module headers and signons. This affects
2890 virtually every file in the ACPICA core subsystem, the iASL compiler, and
2891 the utilities.
2892
2893 Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable
2894 during a table load. A bad pointer was passed in the case where the DSDT is
2895 overridden, causing a fault in this case.
2896
2897 Example Code and Data Size: These are the sizes for the OS-independent
2898 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2899 debug version of the code includes the debug output trace mechanism and has
2900 a much larger code and data size.
2901
2902 Previous Release:
2903 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
2904 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
2905 Current Release:
2906 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
2907 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
2908
2909 ----------------------------------------
2910 15 December 2006. Summary of changes for version 20061215:
2911
2912 1) ACPI CA Core Subsystem:
2913
2914 Support for 16-bit ACPICA has been completely removed since it is no longer
2915 necessary and it clutters the code. All 16-bit macros, types, and
2916 conditional compiles have been removed, cleaning up and simplifying the code
2917 across the entire subsystem. DOS support is no longer needed since the
2918 bootable Linux firmware kit is now available.
2919
2920 The handler for the Global Lock is now removed during AcpiTerminate to
2921 enable a clean subsystem restart, via the implementation of the
2922 AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz,
2923 HP)
2924
2925 Implemented enhancements to the multithreading support within the debugger
2926 to enable improved multithreading debugging and evaluation of the subsystem.
2927 (Valery Podrezov)
2928
2929 Debugger: Enhanced the Statistics/Memory command to emit the total (maximum)
2930 memory used during the execution, as well as the maximum memory consumed by
2931 each of the various object types. (Valery Podrezov)
2932
2933 Example Code and Data Size: These are the sizes for the OS-independent
2934 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2935 debug version of the code includes the debug output trace mechanism and has
2936 a much larger code and data size.
2937
2938 Previous Release:
2939 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
2940 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
2941 Current Release:
2942 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
2943 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
2944
2945
2946 2) iASL Compiler/Disassembler and Tools:
2947
2948 AcpiExec: Implemented a new option (-m) to display full memory use
2949 statistics upon subsystem/program termination. (Valery Podrezov)
2950
2951 ----------------------------------------
2952 09 November 2006. Summary of changes for version 20061109:
2953
2954 1) ACPI CA Core Subsystem:
2955
2956 Optimized the Load ASL operator in the case where the source operand is an
2957 operation region. Simply map the operation region memory, instead of
2958 performing a bytewise read. (Region must be of type SystemMemory, see
2959 below.)
2960
2961 Fixed the Load ASL operator for the case where the source operand is a
2962 region field. A buffer object is also allowed as the source operand. BZ 480
2963
2964 Fixed a problem where the Load ASL operator allowed the source operand to be
2965 an operation region of any type. It is now restricted to regions of type
2966 SystemMemory, as per the ACPI specification. BZ 481
2967
2968 Additional cleanup and optimizations for the new Table Manager code.
2969
2970 AcpiEnable will now fail if all of the required ACPI tables are not loaded
2971 (FADT, FACS, DSDT). BZ 477
2972
2973 Added #pragma pack(8/4) to acobject.h to ensure that the structures in this
2974 header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been
2975 manually optimized to be aligned and will not work if it is byte-packed.
2976
2977 Example Code and Data Size: These are the sizes for the OS-independent
2978 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
2979 debug version of the code includes the debug output trace mechanism and has
2980 a much larger code and data size.
2981
2982 Previous Release:
2983 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
2984 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
2985 Current Release:
2986 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
2987 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
2988
2989
2990 2) iASL Compiler/Disassembler and Tools:
2991
2992 Fixed a problem where the presence of the _OSI predefined control method
2993 within complex expressions could cause an internal compiler error.
2994
2995 AcpiExec: Implemented full region support for multiple address spaces.
2996 SpaceId is now part of the REGION object. BZ 429
2997
2998 ----------------------------------------
2999 11 October 2006. Summary of changes for version 20061011:
3000
3001 1) ACPI CA Core Subsystem:
3002
3003 Completed an AML interpreter performance enhancement for control method
3004 execution. Previously a 2-pass parse/execution, control methods are now
3005 completely parsed and executed in a single pass. This improves overall
3006 interpreter performance by ~25%, reduces code size, and reduces CPU stack
3007 use. (Valery Podrezov + interpreter changes in version 20051202 that
3008 eliminated namespace loading during the pass one parse.)
3009
3010 Implemented _CID support for PCI Root Bridge detection. If the _HID does not
3011 match the predefined PCI Root Bridge IDs, the _CID list (if present) is now
3012 obtained and also checked for an ID match.
3013
3014 Implemented additional support for the PCI _ADR execution: upsearch until a
3015 device scope is found before executing _ADR. This allows PCI_Config
3016 operation regions to be declared locally within control methods underneath
3017 PCI device objects.
3018
3019 Fixed a problem with a possible race condition between threads executing
3020 AcpiWalkNamespace and the AML interpreter. This condition was removed by
3021 modifying AcpiWalkNamespace to (by default) ignore all temporary namespace
3022 entries created during any concurrent control method execution. An
3023 additional namespace race condition is known to exist between
3024 AcpiWalkNamespace and the Load/Unload ASL operators and is still under
3025 investigation.
3026
3027 Restructured the AML ParseLoop function, breaking it into several
3028 subfunctions in order to reduce CPU stack use and improve maintainability.
3029 (Mikhail Kouzmich)
3030
3031 AcpiGetHandle: Fix for parameter validation to detect invalid combinations
3032 of prefix handle and pathname. BZ 478
3033
3034 Example Code and Data Size: These are the sizes for the OS-independent
3035 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3036 debug version of the code includes the debug output trace mechanism and has
3037 a much larger code and data size.
3038
3039 Previous Release:
3040 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
3041 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
3042 Current Release:
3043 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
3044 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
3045
3046 2) iASL Compiler/Disassembler and Tools:
3047
3048 Ported the -g option (get local ACPI tables) to the new ACPICA Table Manager
3049 to restore original behavior.
3050
3051 ----------------------------------------
3052 27 September 2006. Summary of changes for version 20060927:
3053
3054 1) ACPI CA Core Subsystem:
3055
3056 Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister.
3057 These functions now use a spinlock for mutual exclusion and the interrupt
3058 level indication flag is not needed.
3059
3060 Fixed a problem with the Global Lock where the lock could appear to be
3061 obtained before it is actually obtained. The global lock semaphore was
3062 inadvertently created with one unit instead of zero units. (BZ 464) Fiodor
3063 Suietov.
3064
3065 Fixed a possible memory leak and fault in AcpiExResolveObjectToValue during
3066 a read from a buffer or region field. (BZ 458) Fiodor Suietov.
3067
3068 Example Code and Data Size: These are the sizes for the OS-independent
3069 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3070 debug version of the code includes the debug output trace mechanism and has
3071 a much larger code and data size.
3072
3073 Previous Release:
3074 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
3075 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
3076 Current Release:
3077 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
3078 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
3079
3080
3081 2) iASL Compiler/Disassembler and Tools:
3082
3083 Fixed a compilation problem with the pre-defined Resource Descriptor field
3084 names where an "object does not exist" error could be incorrectly generated
3085 if the parent ResourceTemplate pathname places the template within a
3086 different namespace scope than the current scope. (BZ 7212)
3087
3088 Fixed a problem where the compiler could hang after syntax errors detected
3089 in an ElseIf construct. (BZ 453)
3090
3091 Fixed a problem with the AmlFilename parameter to the DefinitionBlock()
3092 operator. An incorrect output filename was produced when this parameter was
3093 a null string (""). Now, the original input filename is used as the AML
3094 output filename, with an ".aml" extension.
3095
3096 Implemented a generic batch command mode for the AcpiExec utility (execute
3097 any AML debugger command) (Valery Podrezov).
3098
3099 ----------------------------------------
3100 12 September 2006. Summary of changes for version 20060912:
3101
3102 1) ACPI CA Core Subsystem:
3103
3104 Enhanced the implementation of the "serialized mode" of the interpreter
3105 (enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is
3106 specified, instead of creating a serialization semaphore per control method,
3107 the interpreter lock is simply no longer released before a blocking
3108 operation during control method execution. This effectively makes the AML
3109 Interpreter single-threaded. The overhead of a semaphore per-method is
3110 eliminated.
3111
3112 Fixed a regression where an error was no longer emitted if a control method
3113 attempts to create 2 objects of the same name. This once again returns
3114 AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism that
3115 will dynamically serialize the control method to possible prevent future
3116 errors. (BZ 440)
3117
3118 Integrated a fix for a problem with PCI Express HID detection in the PCI
3119 Config Space setup procedure. (BZ 7145)
3120
3121 Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the
3122 AcpiHwInitialize function - the FADT registers are now validated when the
3123 table is loaded.
3124
3125 Added two new warnings during FADT verification - 1) if the FADT is larger
3126 than the largest known FADT version, and 2) if there is a mismatch between a
3127 32-bit block address and the 64-bit X counterpart (when both are non-zero.)
3128
3129 Example Code and Data Size: These are the sizes for the OS-independent
3130 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3131 debug version of the code includes the debug output trace mechanism and has
3132 a much larger code and data size.
3133
3134 Previous Release:
3135 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
3136 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
3137 Current Release:
3138 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
3139 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
3140
3141
3142 2) iASL Compiler/Disassembler and Tools:
3143
3144 Fixed a problem with the implementation of the Switch() operator where the
3145 temporary variable was declared too close to the actual Switch, instead of
3146 at method level. This could cause a problem if the Switch() operator is
3147 within a while loop, causing an error on the second iteration. (BZ 460)
3148
3149 Disassembler - fix for error emitted for unknown type for target of scope
3150 operator. Now, ignore it and continue.
3151
3152 Disassembly of an FADT now verifies the input FADT and reports any errors
3153 found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs.
3154
3155 Disassembly of raw data buffers with byte initialization data now prefixes
3156 each output line with the current buffer offset.
3157
3158 Disassembly of ASF! table now includes all variable-length data fields at
3159 the end of some of the subtables.
3160
3161 The disassembler now emits a comment if a buffer appears to be a
3162 ResourceTemplate, but cannot be disassembled as such because the EndTag does
3163 not appear at the very end of the buffer.
3164
3165 AcpiExec - Added the "-t" command line option to enable the serialized mode
3166 of the AML interpreter.
3167
3168 ----------------------------------------
3169 31 August 2006. Summary of changes for version 20060831:
3170
3171 1) ACPI CA Core Subsystem:
3172
3173 Miscellaneous fixes for the Table Manager:
3174 - Correctly initialize internal common FADT for all 64-bit "X" fields
3175 - Fixed a couple table mapping issues during table load
3176 - Fixed a couple alignment issues for IA64
3177 - Initialize input array to zero in AcpiInitializeTables
3178 - Additional parameter validation for AcpiGetTable, AcpiGetTableHeader,
3179 AcpiGetTableByIndex
3180
3181 Change for GPE support: when a "wake" GPE is received, all wake GPEs are now
3182 immediately disabled to prevent the waking GPE from firing again and to
3183 prevent other wake GPEs from interrupting the wake process.
3184
3185 Added the AcpiGpeCount global that tracks the number of processed GPEs, to
3186 be used for debugging systems with a large number of ACPI interrupts.
3187
3188 Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in
3189 both the ACPICA headers and the disassembler.
3190
3191 Example Code and Data Size: These are the sizes for the OS-independent
3192 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3193 debug version of the code includes the debug output trace mechanism and has
3194 a much larger code and data size.
3195
3196 Previous Release:
3197 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
3198 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
3199 Current Release:
3200 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
3201 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
3202
3203
3204 2) iASL Compiler/Disassembler and Tools:
3205
3206 Disassembler support for the DMAR ACPI table.
3207
3208 ----------------------------------------
3209 23 August 2006. Summary of changes for version 20060823:
3210
3211 1) ACPI CA Core Subsystem:
3212
3213 The Table Manager component has been completely redesigned and
3214 reimplemented. The new design is much simpler, and reduces the overall code
3215 and data size of the kernel-resident ACPICA by approximately 5%. Also, it is
3216 now possible to obtain the ACPI tables very early during kernel
3217 initialization, even before dynamic memory management is initialized.
3218 (Alexey Starikovskiy, Fiodor Suietov, Bob Moore)
3219
3220 Obsolete ACPICA interfaces:
3221
3222 - AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel init
3223 time).
3224 - AcpiLoadTable: Not needed.
3225 - AcpiUnloadTable: Not needed.
3226
3227 New ACPICA interfaces:
3228
3229 - AcpiInitializeTables: Must be called before the table manager can be used.
3230 - AcpiReallocateRootTable: Used to transfer the root table to dynamically
3231 allocated memory after it becomes available.
3232 - AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI tables
3233 in the RSDT/XSDT.
3234
3235 Other ACPICA changes:
3236
3237 - AcpiGetTableHeader returns the actual mapped table header, not a copy. Use
3238 AcpiOsUnmapMemory to free this mapping.
3239 - AcpiGetTable returns the actual mapped table. The mapping is managed
3240 internally and must not be deleted by the caller. Use of this interface
3241 causes no additional dynamic memory allocation.
3242 - AcpiFindRootPointer: Support for physical addressing has been eliminated,
3243 it appeared to be unused.
3244 - The interface to AcpiOsMapMemory has changed to be consistent with the
3245 other allocation interfaces.
3246 - The interface to AcpiOsGetRootPointer has changed to eliminate unnecessary
3247 parameters.
3248 - ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on 64-
3249 bit platforms. Was previously 64 bits on all platforms.
3250 - The interface to the ACPI Global Lock acquire/release macros have changed
3251 slightly since ACPICA no longer keeps a local copy of the FACS with a
3252 constructed pointer to the actual global lock.
3253
3254 Porting to the new table manager:
3255
3256 - AcpiInitializeTables: Must be called once, and can be called anytime
3257 during the OS initialization process. It allows the host to specify an area
3258 of memory to be used to store the internal version of the RSDT/XSDT (root
3259 table). This allows the host to access ACPI tables before memory management
3260 is initialized and running.
3261 - AcpiReallocateRootTable: Can be called after memory management is running
3262 to copy the root table to a dynamically allocated array, freeing up the
3263 scratch memory specified in the call to AcpiInitializeTables.
3264 - AcpiSubsystemInitialize: This existing interface is independent of the
3265 Table Manager, and does not have to be called before the Table Manager can
3266 be used, it only must be called before the rest of ACPICA can be used.
3267 - ACPI Tables: Some changes have been made to the names and structure of the
3268 actbl.h and actbl1.h header files and may require changes to existing code.
3269 For example, bitfields have been completely removed because of their lack of
3270 portability across C compilers.
3271 - Update interfaces to the Global Lock acquire/release macros if local
3272 versions are used. (see acwin.h)
3273
3274 Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c
3275
3276 New files: tbfind.c
3277
3278 Example Code and Data Size: These are the sizes for the OS-independent
3279 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3280 debug version of the code includes the debug output trace mechanism and has
3281 a much larger code and data size.
3282
3283 Previous Release:
3284 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
3285 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
3286 Current Release:
3287 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
3288 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
3289
3290
3291 2) iASL Compiler/Disassembler and Tools:
3292
3293 No changes for this release.
3294
3295 ----------------------------------------
3296 21 July 2006. Summary of changes for version 20060721:
3297
3298 1) ACPI CA Core Subsystem:
3299
3300 The full source code for the ASL test suite used to validate the iASL
3301 compiler and the ACPICA core subsystem is being released with the ACPICA
3302 source for the first time. The source is contained in a separate package and
3303 consists of over 1100 files that exercise all ASL/AML operators. The package
3304 should appear on the Intel/ACPI web site shortly. (Valery Podrezov, Fiodor
3305 Suietov)
3306
3307 Completed a new design and implementation for support of the ACPI Global
3308 Lock. On the OS side, the global lock is now treated as a standard AML
3309 mutex. Previously, multiple OS threads could "acquire" the global lock
3310 simultaneously. However, this could cause the BIOS to be starved out of the
3311 lock - especially in cases such as the Embedded Controller driver where
3312 there is a tight coupling between the OS and the BIOS.
3313
3314 Implemented an optimization for the ACPI Global Lock interrupt mechanism.
3315 The Global Lock interrupt handler no longer queues the execution of a
3316 separate thread to signal the global lock semaphore. Instead, the semaphore
3317 is signaled directly from the interrupt handler.
3318
3319 Implemented support within the AML interpreter for package objects that
3320 contain a larger AML length (package list length) than the package element
3321 count. In this case, the length of the package is truncated to match the
3322 package element count. Some BIOS code apparently modifies the package length
3323 on the fly, and this change supports this behavior. Provides compatibility
3324 with the MS AML interpreter. (With assistance from Fiodor Suietov)
3325
3326 Implemented a temporary fix for the BankValue parameter of a Bank Field to
3327 support all constant values, now including the Zero and One opcodes.
3328 Evaluation of this parameter must eventually be converted to a full TermArg
3329 evaluation. A not-implemented error is now returned (temporarily) for non-
3330 constant values for this parameter.
3331
3332 Fixed problem reports (Fiodor Suietov) integrated:
3333 - Fix for premature object deletion after CopyObject on Operation Region (BZ
3334 350)
3335
3336 Example Code and Data Size: These are the sizes for the OS-independent
3337 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3338 debug version of the code includes the debug output trace mechanism and has
3339 a much larger code and data size.
3340
3341 Previous Release:
3342 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total
3343 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total
3344 Current Release:
3345 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
3346 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
3347
3348
3349 2) iASL Compiler/Disassembler and Tools:
3350
3351 No changes for this release.
3352
3353 ----------------------------------------
3354 07 July 2006. Summary of changes for version 20060707:
3355
3356 1) ACPI CA Core Subsystem:
3357
3358 Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers
3359 that do not allow the initialization of address pointers within packed
3360 structures - even though the hardware itself may support misaligned
3361 transfers. Some of the debug data structures are packed by default to
3362 minimize size.
3363
3364 Added an error message for the case where AcpiOsGetThreadId() returns zero.
3365 A non-zero value is required by the core ACPICA code to ensure the proper
3366 operation of AML mutexes and recursive control methods.
3367
3368 The DSDT is now the only ACPI table that determines whether the AML
3369 interpreter is in 32-bit or 64-bit mode. Not really a functional change, but
3370 the hooks for per-table 32/64 switching have been removed from the code. A
3371 clarification to the ACPI specification is forthcoming in ACPI 3.0B.
3372
3373 Fixed a possible leak of an OwnerID in the error path of
3374 AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID
3375 deletion to a single place in AcpiTbUninstallTable to correct possible leaks
3376 when using the AcpiTbDeleteTablesByType interface (with assistance from
3377 Lance Ortiz.)
3378
3379 Fixed a problem with Serialized control methods where the semaphore
3380 associated with the method could be over-signaled after multiple method
3381 invocations.
3382
3383 Fixed two issues with the locking of the internal namespace data structure.
3384 Both the Unload() operator and AcpiUnloadTable interface now lock the
3385 namespace during the namespace deletion associated with the table unload
3386 (with assistance from Linn Crosetto.)
3387
3388 Fixed problem reports (Valery Podrezov) integrated:
3389 - Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426)
3390
3391 Fixed problem reports (Fiodor Suietov) integrated:
3392 - Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369)
3393 - On Address Space handler deletion, needless deactivation call (BZ 374)
3394 - AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ 375)
3395 - Possible memory leak, Notify sub-objects of Processor, Power, ThermalZone
3396 (BZ 376)
3397 - AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378)
3398 - Minimum Length of RSDT should be validated (BZ 379)
3399 - AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no
3400 Handler (BZ (380)
3401 - AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type loaded
3402 (BZ 381)
3403
3404 Example Code and Data Size: These are the sizes for the OS-independent
3405 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3406 debug version of the code includes the debug output trace mechanism and has
3407 a much larger code and data size.
3408
3409 Previous Release:
3410 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
3411 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
3412 Current Release:
3413 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
3414 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
3415
3416
3417 2) iASL Compiler/Disassembler and Tools:
3418
3419 Fixed problem reports:
3420 Compiler segfault when ASL contains a long (>1024) String declaration (BZ
3421 436)
3422
3423 ----------------------------------------
3424 23 June 2006. Summary of changes for version 20060623:
3425
3426 1) ACPI CA Core Subsystem:
3427
3428 Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This
3429 allows the type to be customized to the host OS for improved efficiency
3430 (since a spinlock is usually a very small object.)
3431
3432 Implemented support for "ignored" bits in the ACPI registers. According to
3433 the ACPI specification, these bits should be preserved when writing the
3434 registers via a read/modify/write cycle. There are 3 bits preserved in this
3435 manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11].
3436
3437 Implemented the initial deployment of new OSL mutex interfaces. Since some
3438 host operating systems have separate mutex and semaphore objects, this
3439 feature was requested. The base code now uses mutexes (and the new mutex
3440 interfaces) wherever a binary semaphore was used previously. However, for
3441 the current release, the mutex interfaces are defined as macros to map them
3442 to the existing semaphore interfaces. Therefore, no OSL changes are required
3443 at this time. (See acpiosxf.h)
3444
3445 Fixed several problems with the support for the control method SyncLevel
3446 parameter. The SyncLevel now works according to the ACPI specification and
3447 in concert with the Mutex SyncLevel parameter, since the current SyncLevel
3448 is a property of the executing thread. Mutual exclusion for control methods
3449 is now implemented with a mutex instead of a semaphore.
3450
3451 Fixed three instances of the use of the C shift operator in the bitfield
3452 support code (exfldio.c) to avoid the use of a shift value larger than the
3453 target data width. The behavior of C compilers is undefined in this case and
3454 can cause unpredictable results, and therefore the case must be detected and
3455 avoided. (Fiodor Suietov)
3456
3457 Added an info message whenever an SSDT or OEM table is loaded dynamically
3458 via the Load() or LoadTable() ASL operators. This should improve debugging
3459 capability since it will show exactly what tables have been loaded (beyond
3460 the tables present in the RSDT/XSDT.)
3461
3462 Example Code and Data Size: These are the sizes for the OS-independent
3463 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3464 debug version of the code includes the debug output trace mechanism and has
3465 a much larger code and data size.
3466
3467 Previous Release:
3468 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
3469 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
3470 Current Release:
3471 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
3472 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
3473
3474
3475 2) iASL Compiler/Disassembler and Tools:
3476
3477 No changes for this release.
3478
3479 ----------------------------------------
3480 08 June 2006. Summary of changes for version 20060608:
3481
3482 1) ACPI CA Core Subsystem:
3483
3484 Converted the locking mutex used for the ACPI hardware to a spinlock. This
3485 change should eliminate all problems caused by attempting to acquire a
3486 semaphore at interrupt level, and it means that all ACPICA external
3487 interfaces that directly access the ACPI hardware can be safely called from
3488 interrupt level. OSL code that implements the semaphore interfaces should be
3489 able to eliminate any workarounds for being called at interrupt level.
3490
3491 Fixed a regression introduced in 20060526 where the ACPI device
3492 initialization could be prematurely aborted with an AE_NOT_FOUND if a device
3493 did not have an optional _INI method.
3494
3495 Fixed an IndexField issue where a write to the Data Register should be
3496 limited in size to the AccessSize (width) of the IndexField itself. (BZ 433,
3497 Fiodor Suietov)
3498
3499 Fixed problem reports (Valery Podrezov) integrated:
3500 - Allow store of ThermalZone objects to Debug object (BZ 5369/5370)
3501
3502 Fixed problem reports (Fiodor Suietov) integrated:
3503 - AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364)
3504
3505 Removed four global mutexes that were obsolete and were no longer being
3506 used.
3507
3508 Example Code and Data Size: These are the sizes for the OS-independent
3509 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3510 debug version of the code includes the debug output trace mechanism and has
3511 a much larger code and data size.
3512
3513 Previous Release:
3514 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
3515 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
3516 Current Release:
3517 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
3518 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
3519
3520
3521 2) iASL Compiler/Disassembler and Tools:
3522
3523 Fixed a fault when using -g option (get tables from registry) on Windows
3524 machines.
3525
3526 Fixed problem reports integrated:
3527 - Generate error if CreateField NumBits parameter is zero. (BZ 405)
3528 - Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor
3529 Suietov)
3530 - Global table revision override (-r) is ignored (BZ 413)
3531
3532 ----------------------------------------
3533 26 May 2006. Summary of changes for version 20060526:
3534
3535 1) ACPI CA Core Subsystem:
3536
3537 Restructured, flattened, and simplified the internal interfaces for
3538 namespace object evaluation - resulting in smaller code, less CPU stack use,
3539 and fewer interfaces. (With assistance from Mikhail Kouzmich)
3540
3541 Fixed a problem with the CopyObject operator where the first parameter was
3542 not typed correctly for the parser, interpreter, compiler, and disassembler.
3543 Caused various errors and unexpected behavior.
3544
3545 Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits
3546 produced incorrect results with some C compilers. Since the behavior of C
3547 compilers when the shift value is larger than the datatype width is
3548 apparently not well defined, the interpreter now detects this condition and
3549 simply returns zero as expected in all such cases. (BZ 395)
3550
3551 Fixed problem reports (Valery Podrezov) integrated:
3552 - Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329)
3553 - Allow interpreter to handle nested method declarations (BZ 5361)
3554
3555 Fixed problem reports (Fiodor Suietov) integrated:
3556 - AcpiTerminate doesn't free debug memory allocation list objects (BZ 355)
3557 - After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ 356)
3558 - AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357)
3559 - Resource Manager should return AE_TYPE for non-device objects (BZ 358)
3560 - Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359)
3561 - Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360)
3562 - Incomplete cleanup branch in AcpiPsParseAml (BZ 361)
3563 - Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362)
3564 - AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ 365)
3565 - Status of the Global Initialization Handler call not used (BZ 366)
3566 - Incorrect object parameter to Global Initialization Handler (BZ 367)
3567
3568 Example Code and Data Size: These are the sizes for the OS-independent
3569 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3570 debug version of the code includes the debug output trace mechanism and has
3571 a much larger code and data size.
3572
3573 Previous Release:
3574 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
3575 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
3576 Current Release:
3577 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
3578 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
3579
3580
3581 2) iASL Compiler/Disassembler and Tools:
3582
3583 Modified the parser to allow the names IO, DMA, and IRQ to be used as
3584 namespace identifiers with no collision with existing resource descriptor
3585 macro names. This provides compatibility with other ASL compilers and is
3586 most useful for disassembly/recompilation of existing tables without parse
3587 errors. (With assistance from Thomas Renninger)
3588
3589 Disassembler: fixed an incorrect disassembly problem with the
3590 DataTableRegion and CopyObject operators. Fixed a possible fault during
3591 disassembly of some Alias operators.
3592
3593 ----------------------------------------
3594 12 May 2006. Summary of changes for version 20060512:
3595
3596 1) ACPI CA Core Subsystem:
3597
3598 Replaced the AcpiOsQueueForExecution interface with a new interface named
3599 AcpiOsExecute. The major difference is that the new interface does not have
3600 a Priority parameter, this appeared to be useless and has been replaced by a
3601 Type parameter. The Type tells the host what type of execution is being
3602 requested, such as global lock handler, notify handler, GPE handler, etc.
3603 This allows the host to queue and execute the request as appropriate for the
3604 request type, possibly using different work queues and different priorities
3605 for the various request types. This enables fixes for multithreading
3606 deadlock problems such as BZ #5534, and will require changes to all existing
3607 OS interface layers. (Alexey Starikovskiy and Bob Moore)
3608
3609 Fixed a possible memory leak associated with the support for the so-called
3610 "implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor
3611 Suietov)
3612
3613 Fixed a problem with the Load() operator where a table load from an
3614 operation region could overwrite an internal table buffer by up to 7 bytes
3615 and cause alignment faults on IPF systems. (With assistance from Luming Yu)
3616
3617 Example Code and Data Size: These are the sizes for the OS-independent
3618 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3619 debug version of the code includes the debug output trace mechanism and has
3620 a much larger code and data size.
3621
3622 Previous Release:
3623 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
3624 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
3625 Current Release:
3626 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
3627 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
3628
3629
3630
3631 2) iASL Compiler/Disassembler and Tools:
3632
3633 Disassembler: Implemented support to cross reference the internal namespace
3634 and automatically generate ASL External() statements for symbols not defined
3635 within the current table being disassembled. This will simplify the
3636 disassembly and recompilation of interdependent tables such as SSDTs since
3637 these statements will no longer have to be added manually.
3638
3639 Disassembler: Implemented experimental support to automatically detect
3640 invocations of external control methods and generate appropriate External()
3641 statements. This is problematic because the AML cannot be correctly parsed
3642 until the number of arguments for each control method is known. Currently,
3643 standalone method invocations and invocations as the source operand of a
3644 Store() statement are supported.
3645
3646 Disassembler: Implemented support for the ASL pseudo-operators LNotEqual,
3647 LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()),
3648 LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code
3649 more readable and likely closer to the original ASL source.
3650
3651 ----------------------------------------
3652 21 April 2006. Summary of changes for version 20060421:
3653
3654 1) ACPI CA Core Subsystem:
3655
3656 Removed a device initialization optimization introduced in 20051216 where
3657 the _STA method was not run unless an _INI was also present for the same
3658 device. This optimization could cause problems because it could allow _INI
3659 methods to be run within a not-present device subtree. (If a not-present
3660 device had no _INI, _STA would not be run, the not-present status would not
3661 be discovered, and the children of the device would be incorrectly
3662 traversed.)
3663
3664 Implemented a new _STA optimization where namespace subtrees that do not
3665 contain _INI are identified and ignored during device initialization.
3666 Selectively running _STA can significantly improve boot time on large
3667 machines (with assistance from Len Brown.)
3668
3669 Implemented support for the device initialization case where the returned
3670 _STA flags indicate a device not-present but functioning. In this case, _INI
3671 is not run, but the device children are examined for presence, as per the
3672 ACPI specification.
3673
3674 Implemented an additional change to the IndexField support in order to
3675 conform to MS behavior. The value written to the Index Register is not
3676 simply a byte offset, it is a byte offset in units of the access width of
3677 the parent Index Field. (Fiodor Suietov)
3678
3679 Defined and deployed a new OSL interface, AcpiOsValidateAddress. This
3680 interface is called during the creation of all AML operation regions, and
3681 allows the host OS to exert control over what addresses it will allow the
3682 AML code to access. Operation Regions whose addresses are disallowed will
3683 cause a runtime exception when they are actually accessed (will not affect
3684 or abort table loading.) See oswinxf or osunixxf for an example
3685 implementation.
3686
3687 Defined and deployed a new OSL interface, AcpiOsValidateInterface. This
3688 interface allows the host OS to match the various "optional"
3689 interface/behavior strings for the _OSI predefined control method as
3690 appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf
3691 for an example implementation.
3692
3693 Restructured and corrected various problems in the exception handling code
3694 paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod
3695 (with assistance from Takayoshi Kochi.)
3696
3697 Modified the Linux source converter to ignore quoted string literals while
3698 converting identifiers from mixed to lower case. This will correct problems
3699 with the disassembler and other areas where such strings must not be
3700 modified.
3701
3702 The ACPI_FUNCTION_* macros no longer require quotes around the function
3703 name. This allows the Linux source converter to convert the names, now that
3704 the converter ignores quoted strings.
3705
3706 Example Code and Data Size: These are the sizes for the OS-independent
3707 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3708 debug version of the code includes the debug output trace mechanism and has
3709 a much larger code and data size.
3710
3711 Previous Release:
3712
3713 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
3714 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
3715 Current Release:
3716 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
3717 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
3718
3719
3720 2) iASL Compiler/Disassembler and Tools:
3721
3722 Implemented 3 new warnings for iASL, and implemented multiple warning levels
3723 (w2 flag).
3724
3725 1) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is not
3726 WAIT_FOREVER (0xFFFF) and the code does not examine the return value to
3727 check for the possible timeout, a warning is issued.
3728
3729 2) Useless operators: If an ASL operator does not specify an optional target
3730 operand and it also does not use the function return value from the
3731 operator, a warning is issued since the operator effectively does nothing.
3732
3733 3) Unreferenced objects: If a namespace object is created, but never
3734 referenced, a warning is issued. This is a warning level 2 since there are
3735 cases where this is ok, such as when a secondary table is loaded that uses
3736 the unreferenced objects. Even so, care is taken to only flag objects that
3737 don't look like they will ever be used. For example, the reserved methods
3738 (starting with an underscore) are usually not referenced because it is
3739 expected that the OS will invoke them.
3740
3741 ----------------------------------------
3742 31 March 2006. Summary of changes for version 20060331:
3743
3744 1) ACPI CA Core Subsystem:
3745
3746 Implemented header file support for the following additional ACPI tables:
3747 ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this support,
3748 all current and known ACPI tables are now defined in the ACPICA headers and
3749 are available for use by device drivers and other software.
3750
3751 Implemented support to allow tables that contain ACPI names with invalid
3752 characters to be loaded. Previously, this would cause the table load to
3753 fail, but since there are several known cases of such tables on existing
3754 machines, this change was made to enable ACPI support for them. Also, this
3755 matches the behavior of the Microsoft ACPI implementation.
3756
3757 Fixed a couple regressions introduced during the memory optimization in the
3758 20060317 release. The namespace node definition required additional
3759 reorganization and an internal datatype that had been changed to 8-bit was
3760 restored to 32-bit. (Valery Podrezov)
3761
3762 Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState
3763 could be passed through to AcpiOsReleaseObject which is unexpected. Such
3764 null pointers are now trapped and ignored, matching the behavior of the
3765 previous implementation before the deployment of AcpiOsReleaseObject.
3766 (Valery Podrezov, Fiodor Suietov)
3767
3768 Fixed a memory mapping leak during the deletion of a SystemMemory operation
3769 region where a cached memory mapping was not deleted. This became a
3770 noticeable problem for operation regions that are defined within frequently
3771 used control methods. (Dana Meyers)
3772
3773 Reorganized the ACPI table header files into two main files: one for the
3774 ACPI tables consumed by the ACPICA core, and another for the miscellaneous
3775 ACPI tables that are consumed by the drivers and other software. The various
3776 FADT definitions were merged into one common section and three different
3777 tables (ACPI 1.0, 1.0+, and 2.0)
3778
3779 Example Code and Data Size: These are the sizes for the OS-independent
3780 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3781 debug version of the code includes the debug output trace mechanism and has
3782 a much larger code and data size.
3783
3784 Previous Release:
3785 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
3786 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
3787 Current Release:
3788 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
3789 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
3790
3791
3792 2) iASL Compiler/Disassembler and Tools:
3793
3794 Disassembler: Implemented support to decode and format all non-AML ACPI
3795 tables (tables other than DSDTs and SSDTs.) This includes the new tables
3796 added to the ACPICA headers, therefore all current and known ACPI tables are
3797 supported.
3798
3799 Disassembler: The change to allow ACPI names with invalid characters also
3800 enables the disassembly of such tables. Invalid characters within names are
3801 changed to '*' to make the name printable; the iASL compiler will still
3802 generate an error for such names, however, since this is an invalid ACPI
3803 character.
3804
3805 Implemented an option for AcpiXtract (-a) to extract all tables found in the
3806 input file. The default invocation extracts only the DSDTs and SSDTs.
3807
3808 Fixed a couple of gcc generation issues for iASL and AcpiExec and added a
3809 makefile for the AcpiXtract utility.
3810
3811 ----------------------------------------
3812 17 March 2006. Summary of changes for version 20060317:
3813
3814 1) ACPI CA Core Subsystem:
3815
3816 Implemented the use of a cache object for all internal namespace nodes.
3817 Since there are about 1000 static nodes in a typical system, this will
3818 decrease memory use for cache implementations that minimize per-allocation
3819 overhead (such as a slab allocator.)
3820
3821 Removed the reference count mechanism for internal namespace nodes, since it
3822 was deemed unnecessary. This reduces the size of each namespace node by
3823 about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit case,
3824 and 32 bytes for the 64-bit case.
3825
3826 Optimized several internal data structures to reduce object size on 64-bit
3827 platforms by packing data within the 64-bit alignment. This includes the
3828 frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static
3829 instances corresponding to the namespace objects.
3830
3831 Added two new strings for the predefined _OSI method: "Windows 2001.1 SP1"
3832 and "Windows 2006".
3833
3834 Split the allocation tracking mechanism out to a separate file, from
3835 utalloc.c to uttrack.c. This mechanism appears to be only useful for
3836 application-level code. Kernels may wish to not include uttrack.c in
3837 distributions.
3838
3839 Removed all remnants of the obsolete ACPI_REPORT_* macros and the associated
3840 code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING
3841 macros.)
3842
3843 Code and Data Size: These are the sizes for the acpica.lib produced by the
3844 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI
3845 driver or OSPM code. The debug version of the code includes the debug output
3846 trace mechanism and has a much larger code and data size. Note that these
3847 values will vary depending on the efficiency of the compiler and the
3848 compiler options used during generation.
3849
3850 Previous Release:
3851 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
3852 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
3853 Current Release:
3854 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
3855 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
3856
3857
3858 2) iASL Compiler/Disassembler and Tools:
3859
3860 Implemented an ANSI C version of the acpixtract utility. This version will
3861 automatically extract the DSDT and all SSDTs from the input acpidump text
3862 file and dump the binary output to separate files. It can also display a
3863 summary of the input file including the headers for each table found and
3864 will extract any single ACPI table, with any signature. (See
3865 source/tools/acpixtract)
3866
3867 ----------------------------------------
3868 10 March 2006. Summary of changes for version 20060310:
3869
3870 1) ACPI CA Core Subsystem:
3871
3872 Tagged all external interfaces to the subsystem with the new
3873 ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to assist
3874 kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL
3875 macro. The default definition is NULL.
3876
3877 Added the ACPI_THREAD_ID type for the return value from AcpiOsGetThreadId.
3878 This allows the host to define this as necessary to simplify kernel
3879 integration. The default definition is ACPI_NATIVE_UINT.
3880
3881 Fixed two interpreter problems related to error processing, the deletion of
3882 objects, and placing invalid pointers onto the internal operator result
3883 stack. BZ 6028, 6151 (Valery Podrezov)
3884
3885 Increased the reference count threshold where a warning is emitted for large
3886 reference counts in order to eliminate unnecessary warnings on systems with
3887 large namespaces (especially 64-bit.) Increased the value from 0x400 to
3888 0x800.
3889
3890 Due to universal disagreement as to the meaning of the 'c' in the calloc()
3891 function, the ACPI_MEM_CALLOCATE macro has been renamed to
3892 ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'.
3893 ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and
3894 ACPI_FREE.
3895
3896 Code and Data Size: These are the sizes for the acpica.lib produced by the
3897 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI
3898 driver or OSPM code. The debug version of the code includes the debug output
3899 trace mechanism and has a much larger code and data size. Note that these
3900 values will vary depending on the efficiency of the compiler and the
3901 compiler options used during generation.
3902
3903 Previous Release:
3904 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
3905 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
3906 Current Release:
3907 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
3908 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
3909
3910
3911 2) iASL Compiler/Disassembler:
3912
3913 Disassembler: implemented support for symbolic resource descriptor
3914 references. If a CreateXxxxField operator references a fixed offset within a
3915 resource descriptor, a name is assigned to the descriptor and the offset is
3916 translated to the appropriate resource tag and pathname. The addition of
3917 this support brings the disassembled code very close to the original ASL
3918 source code and helps eliminate run-time errors when the disassembled code
3919 is modified (and recompiled) in such a way as to invalidate the original
3920 fixed offsets.
3921
3922 Implemented support for a Descriptor Name as the last parameter to the ASL
3923 Register() macro. This parameter was inadvertently left out of the ACPI
3924 specification, and will be added for ACPI 3.0b.
3925
3926 Fixed a problem where the use of the "_OSI" string (versus the full path
3927 "\_OSI") caused an internal compiler error. ("No back ptr to op")
3928
3929 Fixed a problem with the error message that occurs when an invalid string is
3930 used for a _HID object (such as one with an embedded asterisk: "*PNP010A".)
3931 The correct message is now displayed.
3932
3933 ----------------------------------------
3934 17 February 2006. Summary of changes for version 20060217:
3935
3936 1) ACPI CA Core Subsystem:
3937
3938 Implemented a change to the IndexField support to match the behavior of the
3939 Microsoft AML interpreter. The value written to the Index register is now a
3940 byte offset, no longer an index based upon the width of the Data register.
3941 This should fix IndexField problems seen on some machines where the Data
3942 register is not exactly one byte wide. The ACPI specification will be
3943 clarified on this point.
3944
3945 Fixed a problem where several resource descriptor types could overrun the
3946 internal descriptor buffer due to size miscalculation: VendorShort,
3947 VendorLong, and Interrupt. This was noticed on IA64 machines, but could
3948 affect all platforms.
3949
3950 Fixed a problem where individual resource descriptors were misaligned within
3951 the internal buffer, causing alignment faults on IA64 platforms.
3952
3953 Code and Data Size: These are the sizes for the acpica.lib produced by the
3954 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any ACPI
3955 driver or OSPM code. The debug version of the code includes the debug output
3956 trace mechanism and has a much larger code and data size. Note that these
3957 values will vary depending on the efficiency of the compiler and the
3958 compiler options used during generation.
3959
3960 Previous Release:
3961 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
3962 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
3963 Current Release:
3964 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
3965 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
3966
3967
3968 2) iASL Compiler/Disassembler:
3969
3970 Implemented support for new reserved names: _WDG and _WED are Microsoft
3971 extensions for Windows Instrumentation Management, _TDL is a new ACPI-
3972 defined method (Throttling Depth Limit.)
3973
3974 Fixed a problem where a zero-length VendorShort or VendorLong resource
3975 descriptor was incorrectly emitted as a descriptor of length one.
3976
3977 ----------------------------------------
3978 10 February 2006. Summary of changes for version 20060210:
3979
3980 1) ACPI CA Core Subsystem:
3981
3982 Removed a couple of extraneous ACPI_ERROR messages that appeared during
3983 normal execution. These became apparent after the conversion from
3984 ACPI_DEBUG_PRINT.
3985
3986 Fixed a problem where the CreateField operator could hang if the BitIndex or
3987 NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359)
3988
3989 Fixed a problem where a DeRefOf operation on a buffer object incorrectly
3990 failed with an exception. This also fixes a couple of related RefOf and
3991 DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387)
3992
3993 Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead of
3994 AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov, BZ
3995 5480)
3996
3997 Implemented a memory cleanup at the end of the execution of each iteration
3998 of an AML While() loop, preventing the accumulation of outstanding objects.
3999 (Valery Podrezov, BZ 5427)
4000
4001 Eliminated a chunk of duplicate code in the object resolution code. (Valery
4002 Podrezov, BZ 5336)
4003
4004 Fixed several warnings during the 64-bit code generation.
4005
4006 The AcpiSrc source code conversion tool now inserts one line of whitespace
4007 after an if() statement that is followed immediately by a comment, improving
4008 readability of the Linux code.
4009
4010 Code and Data Size: The current and previous library sizes for the core
4011 subsystem are shown below. These are the code and data sizes for the
4012 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
4013 values do not include any ACPI driver or OSPM code. The debug version of the
4014 code includes the debug output trace mechanism and has a much larger code
4015 and data size. Note that these values will vary depending on the efficiency
4016 of the compiler and the compiler options used during generation.
4017
4018 Previous Release:
4019 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
4020 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
4021 Current Release:
4022 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
4023 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
4024
4025
4026 2) iASL Compiler/Disassembler:
4027
4028 Fixed a problem with the disassembly of a BankField operator with a complex
4029 expression for the BankValue parameter.
4030
4031 ----------------------------------------
4032 27 January 2006. Summary of changes for version 20060127:
4033
4034 1) ACPI CA Core Subsystem:
4035
4036 Implemented support in the Resource Manager to allow unresolved namestring
4037 references within resource package objects for the _PRT method. This support
4038 is in addition to the previously implemented unresolved reference support
4039 within the AML parser. If the interpreter slack mode is enabled, these
4040 unresolved references will be passed through to the caller as a NULL package
4041 entry.
4042
4043 Implemented and deployed new macros and functions for error and warning
4044 messages across the subsystem. These macros are simpler and generate less
4045 code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION,
4046 ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older
4047 macros remain defined to allow ACPI drivers time to migrate to the new
4048 macros.
4049
4050 Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of the
4051 Acquire/Release Lock OSL interfaces.
4052
4053 Fixed a problem where Alias ASL operators are sometimes not correctly
4054 resolved, in both the interpreter and the iASL compiler.
4055
4056 Fixed several problems with the implementation of the ConcatenateResTemplate
4057 ASL operator. As per the ACPI specification, zero length buffers are now
4058 treated as a single EndTag. One-length buffers always cause a fatal
4059 exception. Non-zero length buffers that do not end with a full 2-byte EndTag
4060 cause a fatal exception.
4061
4062 Fixed a possible structure overwrite in the AcpiGetObjectInfo external
4063 interface. (With assistance from Thomas Renninger)
4064
4065 Code and Data Size: The current and previous library sizes for the core
4066 subsystem are shown below. These are the code and data sizes for the
4067 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
4068 values do not include any ACPI driver or OSPM code. The debug version of the
4069 code includes the debug output trace mechanism and has a much larger code
4070 and data size. Note that these values will vary depending on the efficiency
4071 of the compiler and the compiler options used during generation.
4072
4073 Previous Release:
4074 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
4075 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
4076 Current Release:
4077 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
4078 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
4079
4080
4081 2) iASL Compiler/Disassembler:
4082
4083 Fixed an internal error that was generated for any forward references to ASL
4084 Alias objects.
4085
4086 ----------------------------------------
4087 13 January 2006. Summary of changes for version 20060113:
4088
4089 1) ACPI CA Core Subsystem:
4090
4091 Added 2006 copyright to all module headers and signons. This affects
4092 virtually every file in the ACPICA core subsystem, iASL compiler, and the
4093 utilities.
4094
4095 Enhanced the ACPICA error reporting in order to simplify user migration to
4096 the non-debug version of ACPICA. Replaced all instances of the
4097 ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN debug
4098 levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros,
4099 respectively. This preserves all error and warning messages in the non-debug
4100 version of the ACPICA code (this has been referred to as the "debug lite"
4101 option.) Over 200 cases were converted to create a total of over 380
4102 error/warning messages across the ACPICA code. This increases the code and
4103 data size of the default non-debug version of the code somewhat (about 13K),
4104 but all error/warning reporting may be disabled if desired (and code
4105 eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time
4106 configuration option. The size of the debug version of ACPICA remains about
4107 the same.
4108
4109 Fixed a memory leak within the AML Debugger "Set" command. One object was
4110 not properly deleted for every successful invocation of the command.
4111
4112 Code and Data Size: The current and previous library sizes for the core
4113 subsystem are shown below. These are the code and data sizes for the
4114 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
4115 values do not include any ACPI driver or OSPM code. The debug version of the
4116 code includes the debug output trace mechanism and has a much larger code
4117 and data size. Note that these values will vary depending on the efficiency
4118 of the compiler and the compiler options used during generation.
4119
4120 Previous Release:
4121 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
4122 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
4123 Current Release:
4124 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
4125 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
4126
4127
4128 2) iASL Compiler/Disassembler:
4129
4130 The compiler now officially supports the ACPI 3.0a specification that was
4131 released on December 30, 2005. (Specification is available at www.acpi.info)
4132
4133 ----------------------------------------
4134 16 December 2005. Summary of changes for version 20051216:
4135
4136 1) ACPI CA Core Subsystem:
4137
4138 Implemented optional support to allow unresolved names within ASL Package
4139 objects. A null object is inserted in the package when a named reference
4140 cannot be located in the current namespace. Enabled via the interpreter
4141 slack flag, this should eliminate AE_NOT_FOUND exceptions seen on machines
4142 that contain such code.
4143
4144 Implemented an optimization to the initialization sequence that can improve
4145 boot time. During ACPI device initialization, the _STA method is now run if
4146 and only if the _INI method exists. The _STA method is used to determine if
4147 the device is present; An _INI can only be run if _STA returns present, but
4148 it is a waste of time to run the _STA method if the _INI does not exist.
4149 (Prototype and assistance from Dong Wei)
4150
4151 Implemented use of the C99 uintptr_t for the pointer casting macros if it is
4152 available in the current compiler. Otherwise, the default (void *) cast is
4153 used as before.
4154
4155 Fixed some possible memory leaks found within the execution path of the
4156 Break, Continue, If, and CreateField operators. (Valery Podrezov)
4157
4158 Fixed a problem introduced in the 20051202 release where an exception is
4159 generated during method execution if a control method attempts to declare
4160 another method.
4161
4162 Moved resource descriptor string constants that are used by both the AML
4163 disassembler and AML debugger to the common utilities directory so that
4164 these components are independent.
4165
4166 Implemented support in the AcpiExec utility (-e switch) to globally ignore
4167 exceptions during control method execution (method is not aborted.)
4168
4169 Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix
4170 generation.
4171
4172 Code and Data Size: The current and previous library sizes for the core
4173 subsystem are shown below. These are the code and data sizes for the
4174 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
4175 values do not include any ACPI driver or OSPM code. The debug version of the
4176 code includes the debug output trace mechanism and has a much larger code
4177 and data size. Note that these values will vary depending on the efficiency
4178 of the compiler and the compiler options used during generation.
4179
4180 Previous Release:
4181 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
4182 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
4183 Current Release:
4184 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
4185 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
4186
4187
4188 2) iASL Compiler/Disassembler:
4189
4190 Fixed a problem where a CPU stack overflow fault could occur if a recursive
4191 method call was made from within a Return statement.
4192
4193 ----------------------------------------
4194 02 December 2005. Summary of changes for version 20051202:
4195
4196 1) ACPI CA Core Subsystem:
4197
4198 Modified the parsing of control methods to no longer create namespace
4199 objects during the first pass of the parse. Objects are now created only
4200 during the execute phase, at the moment the namespace creation operator is
4201 encountered in the AML (Name, OperationRegion, CreateByteField, etc.) This
4202 should eliminate ALREADY_EXISTS exceptions seen on some machines where
4203 reentrant control methods are protected by an AML mutex. The mutex will now
4204 correctly block multiple threads from attempting to create the same object
4205 more than once.
4206
4207 Increased the number of available Owner Ids for namespace object tracking
4208 from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen on
4209 some machines with a large number of ACPI tables (either static or dynamic).
4210
4211 Fixed a problem with the AcpiExec utility where a fault could occur when the
4212 -b switch (batch mode) is used.
4213
4214 Enhanced the namespace dump routine to output the owner ID for each
4215 namespace object.
4216
4217 Code and Data Size: The current and previous library sizes for the core
4218 subsystem are shown below. These are the code and data sizes for the
4219 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
4220 values do not include any ACPI driver or OSPM code. The debug version of the
4221 code includes the debug output trace mechanism and has a much larger code
4222 and data size. Note that these values will vary depending on the efficiency
4223 of the compiler and the compiler options used during generation.
4224
4225 Previous Release:
4226 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
4227 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
4228 Current Release:
4229 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
4230 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
4231
4232
4233 2) iASL Compiler/Disassembler:
4234
4235 Fixed a parse error during compilation of certain Switch/Case constructs. To
4236 simplify the parse, the grammar now allows for multiple Default statements
4237 and this error is now detected and flagged during the analysis phase.
4238
4239 Disassembler: The disassembly now includes the contents of the original
4240 table header within a comment at the start of the file. This includes the
4241 name and version of the original ASL compiler.
4242
4243 ----------------------------------------
4244 17 November 2005. Summary of changes for version 20051117:
4245
4246 1) ACPI CA Core Subsystem:
4247
4248 Fixed a problem in the AML parser where the method thread count could be
4249 decremented below zero if any errors occurred during the method parse phase.
4250 This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some machines.
4251 This also fixed a related regression with the mechanism that detects and
4252 corrects methods that cannot properly handle reentrancy (related to the
4253 deployment of the new OwnerId mechanism.)
4254
4255 Eliminated the pre-parsing of control methods (to detect errors) during
4256 table load. Related to the problem above, this was causing unwind issues if
4257 any errors occurred during the parse, and it seemed to be overkill. A table
4258 load should not be aborted if there are problems with any single control
4259 method, thus rendering this feature rather pointless.
4260
4261 Fixed a problem with the new table-driven resource manager where an internal
4262 buffer overflow could occur for small resource templates.
4263
4264 Implemented a new external interface, AcpiGetVendorResource. This interface
4265 will find and return a vendor-defined resource descriptor within a _CRS or
4266 _PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn Helgaas.
4267
4268 Removed the length limit (200) on string objects as per the upcoming ACPI
4269 3.0A specification. This affects the following areas of the interpreter: 1)
4270 any implicit conversion of a Buffer to a String, 2) a String object result
4271 of the ASL Concatentate operator, 3) the String object result of the ASL
4272 ToString operator.
4273
4274 Fixed a problem in the Windows OS interface layer (OSL) where a WAIT_FOREVER
4275 on a semaphore object would incorrectly timeout. This allows the
4276 multithreading features of the AcpiExec utility to work properly under
4277 Windows.
4278
4279 Updated the Linux makefiles for the iASL compiler and AcpiExec to include
4280 the recently added file named "utresrc.c".
4281
4282 Code and Data Size: The current and previous library sizes for the core
4283 subsystem are shown below. These are the code and data sizes for the
4284 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
4285 values do not include any ACPI driver or OSPM code. The debug version of the
4286 code includes the debug output trace mechanism and has a much larger code
4287 and data size. Note that these values will vary depending on the efficiency
4288 of the compiler and the compiler options used during generation.
4289
4290 Previous Release:
4291 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
4292 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
4293 Current Release:
4294 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
4295 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
4296
4297
4298 2) iASL Compiler/Disassembler:
4299
4300 Removed the limit (200) on string objects as per the upcoming ACPI 3.0A
4301 specification. For the iASL compiler, this means that string literals within
4302 the source ASL can be of any length.
4303
4304 Enhanced the listing output to dump the AML code for resource descriptors
4305 immediately after the ASL code for each descriptor, instead of in a block at
4306 the end of the entire resource template.
4307
4308 Enhanced the compiler debug output to dump the entire original parse tree
4309 constructed during the parse phase, before any transforms are applied to the
4310 tree. The transformed tree is dumped also.
4311
4312 ----------------------------------------
4313 02 November 2005. Summary of changes for version 20051102:
4314
4315 1) ACPI CA Core Subsystem:
4316
4317 Modified the subsystem initialization sequence to improve GPE support. The
4318 GPE initialization has been split into two parts in order to defer execution
4319 of the _PRW methods (Power Resources for Wake) until after the hardware is
4320 fully initialized and the SCI handler is installed. This allows the _PRW
4321 methods to access fields protected by the Global Lock. This will fix systems
4322 where a NO_GLOBAL_LOCK exception has been seen during initialization.
4323
4324 Converted the ACPI internal object disassemble and display code within the
4325 AML debugger to fully table-driven operation, reducing code size and
4326 increasing maintainability.
4327
4328 Fixed a regression with the ConcatenateResTemplate() ASL operator introduced
4329 in the 20051021 release.
4330
4331 Implemented support for "local" internal ACPI object types within the
4332 debugger "Object" command and the AcpiWalkNamespace external interfaces.
4333 These local types include RegionFields, BankFields, IndexFields, Alias, and
4334 reference objects.
4335
4336 Moved common AML resource handling code into a new file, "utresrc.c". This
4337 code is shared by both the Resource Manager and the AML Debugger.
4338
4339 Code and Data Size: The current and previous library sizes for the core
4340 subsystem are shown below. These are the code and data sizes for the
4341 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
4342 values do not include any ACPI driver or OSPM code. The debug version of the
4343 code includes the debug output trace mechanism and has a much larger code
4344 and data size. Note that these values will vary depending on the efficiency
4345 of the compiler and the compiler options used during generation.
4346
4347 Previous Release:
4348 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
4349 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
4350 Current Release:
4351 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
4352 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
4353
4354
4355 2) iASL Compiler/Disassembler:
4356
4357 Fixed a problem with very large initializer lists (more than 4000 elements)
4358 for both Buffer and Package objects where the parse stack could overflow.
4359
4360 Enhanced the pre-compile source code scan for non-ASCII characters to ignore
4361 characters within comment fields. The scan is now always performed and is no
4362 longer optional, detecting invalid characters within a source file
4363 immediately rather than during the parse phase or later.
4364
4365 Enhanced the ASL grammar definition to force early reductions on all list-
4366 style grammar elements so that the overall parse stack usage is greatly
4367 reduced. This should improve performance and reduce the possibility of parse
4368 stack overflow.
4369
4370 Eliminated all reduce/reduce conflicts in the iASL parser generation. Also,
4371 with the addition of a %expected statement, the compiler generates from
4372 source with no warnings.
4373
4374 Fixed a possible segment fault in the disassembler if the input filename
4375 does not contain a "dot" extension (Thomas Renninger).
4376
4377 ----------------------------------------
4378 21 October 2005. Summary of changes for version 20051021:
4379
4380 1) ACPI CA Core Subsystem:
4381
4382 Implemented support for the EM64T and other x86-64 processors. This
4383 essentially entails recognizing that these processors support non-aligned
4384 memory transfers. Previously, all 64-bit processors were assumed to lack
4385 hardware support for non-aligned transfers.
4386
4387 Completed conversion of the Resource Manager to nearly full table-driven
4388 operation. Specifically, the resource conversion code (convert AML to
4389 internal format and the reverse) and the debug code to dump internal
4390 resource descriptors are fully table-driven, reducing code and data size and
4391 improving maintainability.
4392
4393 The OSL interfaces for Acquire and Release Lock now use a 64-bit flag word
4394 on 64-bit processors instead of a fixed 32-bit word. (With assistance from
4395 Alexey Starikovskiy)
4396
4397 Implemented support within the resource conversion code for the Type-
4398 Specific byte within the various ACPI 3.0 *WordSpace macros.
4399
4400 Fixed some issues within the resource conversion code for the type-specific
4401 flags for both Memory and I/O address resource descriptors. For Memory,
4402 implemented support for the MTP and TTP flags. For I/O, split the TRS and
4403 TTP flags into two separate fields.
4404
4405 Code and Data Size: The current and previous library sizes for the core
4406 subsystem are shown below. These are the code and data sizes for the
4407 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
4408 values do not include any ACPI driver or OSPM code. The debug version of the
4409 code includes the debug output trace mechanism and has a much larger code
4410 and data size. Note that these values will vary depending on the efficiency
4411 of the compiler and the compiler options used during generation.
4412
4413 Previous Release:
4414 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
4415 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
4416 Current Release:
4417 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
4418 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
4419
4420
4421
4422 2) iASL Compiler/Disassembler:
4423
4424 Relaxed a compiler restriction that disallowed a ResourceIndex byte if the
4425 corresponding ResourceSource string was not also present in a resource
4426 descriptor declaration. This restriction caused problems with existing
4427 AML/ASL code that includes the Index byte without the string. When such AML
4428 was disassembled, it could not be compiled without modification. Further,
4429 the modified code created a resource template with a different size than the
4430 original, breaking code that used fixed offsets into the resource template
4431 buffer.
4432
4433 Removed a recent feature of the disassembler to ignore a lone ResourceIndex
4434 byte. This byte is now emitted if present so that the exact AML can be
4435 reproduced when the disassembled code is recompiled.
4436
4437 Improved comments and text alignment for the resource descriptor code
4438 emitted by the disassembler.
4439
4440 Implemented disassembler support for the ACPI 3.0 AccessSize field within a
4441 Register() resource descriptor.
4442
4443 ----------------------------------------
4444 30 September 2005. Summary of changes for version 20050930:
4445
4446 1) ACPI CA Core Subsystem:
4447
4448 Completed a major overhaul of the Resource Manager code - specifically,
4449 optimizations in the area of the AML/internal resource conversion code. The
4450 code has been optimized to simplify and eliminate duplicated code, CPU stack
4451 use has been decreased by optimizing function parameters and local
4452 variables, and naming conventions across the manager have been standardized
4453 for clarity and ease of maintenance (this includes function, parameter,
4454 variable, and struct/typedef names.) The update may force changes in some
4455 driver code, depending on how resources are handled by the host OS.
4456
4457 All Resource Manager dispatch and information tables have been moved to a
4458 single location for clarity and ease of maintenance. One new file was
4459 created, named "rsinfo.c".
4460
4461 The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to
4462 guarantee that the argument is not evaluated twice, making them less prone
4463 to macro side-effects. However, since there exists the possibility of
4464 additional stack use if a particular compiler cannot optimize them (such as
4465 in the debug generation case), the original macros are optionally available.
4466 Note that some invocations of the return_VALUE macro may now cause size
4467 mismatch warnings; the return_UINT8 and return_UINT32 macros are provided to
4468 eliminate these. (From Randy Dunlap)
4469
4470 Implemented a new mechanism to enable debug tracing for individual control
4471 methods. A new external interface, AcpiDebugTrace, is provided to enable
4472 this mechanism. The intent is to allow the host OS to easily enable and
4473 disable tracing for problematic control methods. This interface can be
4474 easily exposed to a user or debugger interface if desired. See the file
4475 psxface.c for details.
4476
4477 AcpiUtCallocate will now return a valid pointer if a length of zero is
4478 specified - a length of one is used and a warning is issued. This matches
4479 the behavior of AcpiUtAllocate.
4480
4481 Code and Data Size: The current and previous library sizes for the core
4482 subsystem are shown below. These are the code and data sizes for the
4483 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
4484 values do not include any ACPI driver or OSPM code. The debug version of the
4485 code includes the debug output trace mechanism and has a much larger code
4486 and data size. Note that these values will vary depending on the efficiency
4487 of the compiler and the compiler options used during generation.
4488
4489 Previous Release:
4490 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
4491 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
4492 Current Release:
4493 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
4494 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
4495
4496
4497 2) iASL Compiler/Disassembler:
4498
4499 A remark is issued if the effective compile-time length of a package or
4500 buffer is zero. Previously, this was a warning.
4501
4502 ----------------------------------------
4503 16 September 2005. Summary of changes for version 20050916:
4504
4505 1) ACPI CA Core Subsystem:
4506
4507 Fixed a problem within the Resource Manager where support for the Generic
4508 Register descriptor was not fully implemented. This descriptor is now fully
4509 recognized, parsed, disassembled, and displayed.
4510
4511 Completely restructured the Resource Manager code to utilize table-driven
4512 dispatch and lookup, eliminating many of the large switch() statements. This
4513 reduces overall subsystem code size and code complexity. Affects the
4514 resource parsing and construction, disassembly, and debug dump output.
4515
4516 Cleaned up and restructured the debug dump output for all resource
4517 descriptors. Improved readability of the output and reduced code size.
4518
4519 Fixed a problem where changes to internal data structures caused the
4520 optional ACPI_MUTEX_DEBUG code to fail compilation if specified.
4521
4522 Code and Data Size: The current and previous library sizes for the core
4523 subsystem are shown below. These are the code and data sizes for the
4524 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. These
4525 values do not include any ACPI driver or OSPM code. The debug version of the
4526 code includes the debug output trace mechanism and has a much larger code
4527 and data size. Note that these values will vary depending on the efficiency
4528 of the compiler and the compiler options used during generation.
4529
4530 Previous Release:
4531 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
4532 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
4533 Current Release:
4534 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
4535 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
4536
4537
4538 2) iASL Compiler/Disassembler:
4539
4540 Updated the disassembler to automatically insert an EndDependentFn() macro
4541 into the ASL stream if this macro is missing in the original AML code,
4542 simplifying compilation of the resulting ASL module.
4543
4544 Fixed a problem in the disassembler where a disassembled ResourceSource
4545 string (within a large resource descriptor) was not surrounded by quotes and
4546 not followed by a comma, causing errors when the resulting ASL module was
4547 compiled. Also, escape sequences within a ResourceSource string are now
4548 handled correctly (especially "\\")
4549
4550 ----------------------------------------
4551 02 September 2005. Summary of changes for version 20050902:
4552
4553 1) ACPI CA Core Subsystem:
4554
4555 Fixed a problem with the internal Owner ID allocation and deallocation
4556 mechanisms for control method execution and recursive method invocation.
4557 This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId"
4558 messages seen on some systems. Recursive method invocation depth is
4559 currently limited to 255. (Alexey Starikovskiy)
4560
4561 Completely eliminated all vestiges of support for the "module-level
4562 executable code" until this support is fully implemented and debugged. This
4563 should eliminate the NO_RETURN_VALUE exceptions seen during table load on
4564 some systems that invoke this support.
4565
4566 Fixed a problem within the resource manager code where the transaction flags
4567 for a 64-bit address descriptor were handled incorrectly in the type-
4568 specific flag byte.
4569
4570 Consolidated duplicate code within the address descriptor resource manager
4571 code, reducing overall subsystem code size.
4572
4573 Fixed a fault when using the AML debugger "disassemble" command to
4574 disassemble individual control methods.
4575
4576 Removed references to the "release_current" directory within the Unix
4577 release package.
4578
4579 Code and Data Size: The current and previous core subsystem library sizes
4580 are shown below. These are the code and data sizes for the acpica.lib
4581 produced by the Microsoft Visual C++ 6.0 compiler. These values do not
4582 include any ACPI driver or OSPM code. The debug version of the code includes
4583 the debug output trace mechanism and has a much larger code and data size.
4584 Note that these values will vary depending on the efficiency of the compiler
4585 and the compiler options used during generation.
4586
4587 Previous Release:
4588 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
4589 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
4590 Current Release:
4591 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
4592 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
4593
4594
4595 2) iASL Compiler/Disassembler:
4596
4597 Implemented an error check for illegal duplicate values in the interrupt and
4598 dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and
4599 Interrupt().
4600
4601 Implemented error checking for the Irq() and IrqNoFlags() macros to detect
4602 too many values in the interrupt list (16 max) and invalid values in the
4603 list (range 0 - 15)
4604
4605 The maximum length string literal within an ASL file is now restricted to
4606 200 characters as per the ACPI specification.
4607
4608 Fixed a fault when using the -ln option (generate namespace listing).
4609
4610 Implemented an error check to determine if a DescriptorName within a
4611 resource descriptor has already been used within the current scope.
4612
4613 ----------------------------------------
4614 15 August 2005. Summary of changes for version 20050815:
4615
4616 1) ACPI CA Core Subsystem:
4617
4618 Implemented a full bytewise compare to determine if a table load request is
4619 attempting to load a duplicate table. The compare is performed if the table
4620 signatures and table lengths match. This will allow different tables with
4621 the same OEM Table ID and revision to be loaded - probably against the ACPI
4622 specification, but discovered in the field nonetheless.
4623
4624 Added the changes.txt logfile to each of the zipped release packages.
4625
4626 Code and Data Size: Current and previous core subsystem library sizes are
4627 shown below. These are the code and data sizes for the acpica.lib produced
4628 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
4629 any ACPI driver or OSPM code. The debug version of the code includes the
4630 debug output trace mechanism and has a much larger code and data size. Note
4631 that these values will vary depending on the efficiency of the compiler and
4632 the compiler options used during generation.
4633
4634 Previous Release:
4635 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
4636 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
4637 Current Release:
4638 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
4639 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
4640
4641
4642 2) iASL Compiler/Disassembler:
4643
4644 Fixed a problem where incorrect AML code could be generated for Package
4645 objects if optimization is disabled (via the -oa switch).
4646
4647 Fixed a problem with where incorrect AML code is generated for variable-
4648 length packages when the package length is not specified and the number of
4649 initializer values is greater than 255.
4650
4651
4652 ----------------------------------------
4653 29 July 2005. Summary of changes for version 20050729:
4654
4655 1) ACPI CA Core Subsystem:
4656
4657 Implemented support to ignore an attempt to install/load a particular ACPI
4658 table more than once. Apparently there exists BIOS code that repeatedly
4659 attempts to load the same SSDT upon certain events. With assistance from
4660 Venkatesh Pallipadi.
4661
4662 Restructured the main interface to the AML parser in order to correctly
4663 handle all exceptional conditions. This will prevent leakage of the OwnerId
4664 resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on some
4665 machines. With assistance from Alexey Starikovskiy.
4666
4667 Support for "module level code" has been disabled in this version due to a
4668 number of issues that have appeared on various machines. The support can be
4669 enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem
4670 compilation. When the issues are fully resolved, the code will be enabled by
4671 default again.
4672
4673 Modified the internal functions for debug print support to define the
4674 FunctionName parameter as a (const char *) for compatibility with compiler
4675 built-in macros such as __FUNCTION__, etc.
4676
4677 Linted the entire ACPICA source tree for both 32-bit and 64-bit.
4678
4679 Implemented support to display an object count summary for the AML Debugger
4680 commands Object and Methods.
4681
4682 Code and Data Size: Current and previous core subsystem library sizes are
4683 shown below. These are the code and data sizes for the acpica.lib produced
4684 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
4685 any ACPI driver or OSPM code. The debug version of the code includes the
4686 debug output trace mechanism and has a much larger code and data size. Note
4687 that these values will vary depending on the efficiency of the compiler and
4688 the compiler options used during generation.
4689
4690 Previous Release:
4691 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
4692 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
4693 Current Release:
4694 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
4695 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
4696
4697
4698 2) iASL Compiler/Disassembler:
4699
4700 Fixed a regression that appeared in the 20050708 version of the compiler
4701 where an error message was inadvertently emitted for invocations of the _OSI
4702 reserved control method.
4703
4704 ----------------------------------------
4705 08 July 2005. Summary of changes for version 20050708:
4706
4707 1) ACPI CA Core Subsystem:
4708
4709 The use of the CPU stack in the debug version of the subsystem has been
4710 considerably reduced. Previously, a debug structure was declared in every
4711 function that used the debug macros. This structure has been removed in
4712 favor of declaring the individual elements as parameters to the debug
4713 functions. This reduces the cumulative stack use during nested execution of
4714 ACPI function calls at the cost of a small increase in the code size of the
4715 debug version of the subsystem. With assistance from Alexey Starikovskiy and
4716 Len Brown.
4717
4718 Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent
4719 headers to define a macro that will return the current function name at
4720 runtime (such as __FUNCTION__ or _func_, etc.) The function name is used by
4721 the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the
4722 compiler-dependent header, the function name is saved on the CPU stack (one
4723 pointer per function.) This mechanism is used because apparently there
4724 exists no standard ANSI-C defined macro that that returns the function name.
4725
4726 Redesigned and reimplemented the "Owner ID" mechanism used to track
4727 namespace objects created/deleted by ACPI tables and control method
4728 execution. A bitmap is now used to allocate and free the IDs, thus solving
4729 the wraparound problem present in the previous implementation. The size of
4730 the namespace node descriptor was reduced by 2 bytes as a result (Alexey
4731 Starikovskiy).
4732
4733 Removed the UINT32_BIT and UINT16_BIT types that were used for the bitfield
4734 flag definitions within the headers for the predefined ACPI tables. These
4735 have been replaced by UINT8_BIT in order to increase the code portability of
4736 the subsystem. If the use of UINT8 remains a problem, we may be forced to
4737 eliminate bitfields entirely because of a lack of portability.
4738
4739 Enhanced the performance of the AcpiUtUpdateObjectReference procedure. This
4740 is a frequently used function and this improvement increases the performance
4741 of the entire subsystem (Alexey Starikovskiy).
4742
4743 Fixed several possible memory leaks and the inverse - premature object
4744 deletion (Alexey Starikovskiy).
4745
4746 Code and Data Size: Current and previous core subsystem library sizes are
4747 shown below. These are the code and data sizes for the acpica.lib produced
4748 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
4749 any ACPI driver or OSPM code. The debug version of the code includes the
4750 debug output trace mechanism and has a much larger code and data size. Note
4751 that these values will vary depending on the efficiency of the compiler and
4752 the compiler options used during generation.
4753
4754 Previous Release:
4755 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
4756 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
4757 Current Release:
4758 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
4759 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
4760
4761 ----------------------------------------
4762 24 June 2005. Summary of changes for version 20050624:
4763
4764 1) ACPI CA Core Subsystem:
4765
4766 Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for
4767 the host-defined cache object. This allows the OSL implementation to define
4768 and type this object in any manner desired, simplifying the OSL
4769 implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for
4770 Linux, and should be defined in the OS-specific header file for other
4771 operating systems as required.
4772
4773 Changed the interface to AcpiOsAcquireObject to directly return the
4774 requested object as the function return (instead of ACPI_STATUS.) This
4775 change was made for performance reasons, since this is the purpose of the
4776 interface in the first place. AcpiOsAcquireObject is now similar to the
4777 AcpiOsAllocate interface.
4778
4779 Implemented a new AML debugger command named Businfo. This command displays
4780 information about all devices that have an associate _PRT object. The _ADR,
4781 _HID, _UID, and _CID are displayed for these devices.
4782
4783 Modified the initialization sequence in AcpiInitializeSubsystem to call the
4784 OSL interface AcpiOslInitialize first, before any local initialization. This
4785 change was required because the global initialization now calls OSL
4786 interfaces.
4787
4788 Enhanced the Dump command to display the entire contents of Package objects
4789 (including all sub-objects and their values.)
4790
4791 Restructured the code base to split some files because of size and/or
4792 because the code logically belonged in a separate file. New files are listed
4793 below. All makefiles and project files included in the ACPI CA release have
4794 been updated.
4795 utilities/utcache.c /* Local cache interfaces */
4796 utilities/utmutex.c /* Local mutex support */
4797 utilities/utstate.c /* State object support */
4798 interpreter/parser/psloop.c /* Main AML parse loop */
4799
4800 Code and Data Size: Current and previous core subsystem library sizes are
4801 shown below. These are the code and data sizes for the acpica.lib produced
4802 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
4803 any ACPI driver or OSPM code. The debug version of the code includes the
4804 debug output trace mechanism and has a much larger code and data size. Note
4805 that these values will vary depending on the efficiency of the compiler and
4806 the compiler options used during generation.
4807
4808 Previous Release:
4809 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
4810 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
4811 Current Release:
4812 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
4813 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
4814
4815
4816 2) iASL Compiler/Disassembler:
4817
4818 Fixed a regression introduced in version 20050513 where the use of a Package
4819 object within a Case() statement caused a compile time exception. The
4820 original behavior has been restored (a Match() operator is emitted.)
4821
4822 ----------------------------------------
4823 17 June 2005. Summary of changes for version 20050617:
4824
4825 1) ACPI CA Core Subsystem:
4826
4827 Moved the object cache operations into the OS interface layer (OSL) to allow
4828 the host OS to handle these operations if desired (for example, the Linux
4829 OSL will invoke the slab allocator). This support is optional; the compile
4830 time define ACPI_USE_LOCAL_CACHE may be used to utilize the original cache
4831 code in the ACPI CA core. The new OSL interfaces are shown below. See
4832 utalloc.c for an example implementation, and acpiosxf.h for the exact
4833 interface definitions. With assistance from Alexey Starikovskiy.
4834 AcpiOsCreateCache
4835 AcpiOsDeleteCache
4836 AcpiOsPurgeCache
4837 AcpiOsAcquireObject
4838 AcpiOsReleaseObject
4839
4840 Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to return
4841 and restore a flags parameter. This fits better with many OS lock models.
4842 Note: the current execution state (interrupt handler or not) is no longer
4843 passed to these interfaces. If necessary, the OSL must determine this state
4844 by itself, a simple and fast operation. With assistance from Alexey
4845 Starikovskiy.
4846
4847 Fixed a problem in the ACPI table handling where a valid XSDT was assumed
4848 present if the revision of the RSDP was 2 or greater. According to the ACPI
4849 specification, the XSDT is optional in all cases, and the table manager
4850 therefore now checks for both an RSDP >=2 and a valid XSDT pointer.
4851 Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs contain
4852 only the RSDT.
4853
4854 Fixed an interpreter problem with the Mid() operator in the case of an input
4855 string where the resulting output string is of zero length. It now correctly
4856 returns a valid, null terminated string object instead of a string object
4857 with a null pointer.
4858
4859 Fixed a problem with the control method argument handling to allow a store
4860 to an Arg object that already contains an object of type Device. The Device
4861 object is now correctly overwritten. Previously, an error was returned.
4862
4863
4864 Enhanced the debugger Find command to emit object values in addition to the
4865 found object pathnames. The output format is the same as the dump namespace
4866 command.
4867
4868 Enhanced the debugger Set command. It now has the ability to set the value
4869 of any Named integer object in the namespace (Previously, only method locals
4870 and args could be set.)
4871
4872 Code and Data Size: Current and previous core subsystem library sizes are
4873 shown below. These are the code and data sizes for the acpica.lib produced
4874 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
4875 any ACPI driver or OSPM code. The debug version of the code includes the
4876 debug output trace mechanism and has a much larger code and data size. Note
4877 that these values will vary depending on the efficiency of the compiler and
4878 the compiler options used during generation.
4879
4880 Previous Release:
4881 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
4882 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
4883 Current Release:
4884 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
4885 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
4886
4887
4888 2) iASL Compiler/Disassembler:
4889
4890 Fixed a regression in the disassembler where if/else/while constructs were
4891 output incorrectly. This problem was introduced in the previous release
4892 (20050526). This problem also affected the single-step disassembly in the
4893 debugger.
4894
4895 Fixed a problem where compiling the reserved _OSI method would randomly (but
4896 rarely) produce compile errors.
4897
4898 Enhanced the disassembler to emit compilable code in the face of incorrect
4899 AML resource descriptors. If the optional ResourceSourceIndex is present,
4900 but the ResourceSource is not, do not emit the ResourceSourceIndex in the
4901 disassembly. Otherwise, the resulting code cannot be compiled without
4902 errors.
4903
4904 ----------------------------------------
4905 26 May 2005. Summary of changes for version 20050526:
4906
4907 1) ACPI CA Core Subsystem:
4908
4909 Implemented support to execute Type 1 and Type 2 AML opcodes appearing at
4910 the module level (not within a control method.) These opcodes are executed
4911 exactly once at the time the table is loaded. This type of code was legal up
4912 until the release of ACPI 2.0B (2002) and is now supported within ACPI CA in
4913 order to provide backwards compatibility with earlier BIOS implementations.
4914 This eliminates the "Encountered executable code at module level" warning
4915 that was previously generated upon detection of such code.
4916
4917 Fixed a problem in the interpreter where an AE_NOT_FOUND exception could
4918 inadvertently be generated during the lookup of namespace objects in the
4919 second pass parse of ACPI tables and control methods. It appears that this
4920 problem could occur during the resolution of forward references to namespace
4921 objects.
4922
4923 Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function,
4924 corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This
4925 allows the deadlock detection debug code to be compiled out in the normal
4926 case, improving mutex performance (and overall subsystem performance)
4927 considerably.
4928
4929 Implemented a handful of miscellaneous fixes for possible memory leaks on
4930 error conditions and error handling control paths. These fixes were
4931 suggested by FreeBSD and the Coverity Prevent source code analysis tool.
4932
4933 Added a check for a null RSDT pointer in AcpiGetFirmwareTable (tbxfroot.c)
4934 to prevent a fault in this error case.
4935
4936 Code and Data Size: Current and previous core subsystem library sizes are
4937 shown below. These are the code and data sizes for the acpica.lib produced
4938 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
4939 any ACPI driver or OSPM code. The debug version of the code includes the
4940 debug output trace mechanism and has a much larger code and data size. Note
4941 that these values will vary depending on the efficiency of the compiler and
4942 the compiler options used during generation.
4943
4944 Previous Release:
4945 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
4946 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
4947 Current Release:
4948 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
4949 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
4950
4951
4952 2) iASL Compiler/Disassembler:
4953
4954 Implemented support to allow Type 1 and Type 2 ASL operators to appear at
4955 the module level (not within a control method.) These operators will be
4956 executed once at the time the table is loaded. This type of code was legal
4957 up until the release of ACPI 2.0B (2002) and is now supported by the iASL
4958 compiler in order to provide backwards compatibility with earlier BIOS ASL
4959 code.
4960
4961 The ACPI integer width (specified via the table revision ID or the -r
4962 override, 32 or 64 bits) is now used internally during compile-time constant
4963 folding to ensure that constants are truncated to 32 bits if necessary.
4964 Previously, the revision ID value was only emitted in the AML table header.
4965
4966 An error message is now generated for the Mutex and Method operators if the
4967 SyncLevel parameter is outside the legal range of 0 through 15.
4968
4969 Fixed a problem with the Method operator ParameterTypes list handling (ACPI
4970 3.0). Previously, more than 2 types or 2 arguments generated a syntax error.
4971 The actual underlying implementation of method argument typechecking is
4972 still under development, however.
4973
4974 ----------------------------------------
4975 13 May 2005. Summary of changes for version 20050513:
4976
4977 1) ACPI CA Core Subsystem:
4978
4979 Implemented support for PCI Express root bridges -- added support for device
4980 PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup.
4981
4982 The interpreter now automatically truncates incoming 64-bit constants to 32
4983 bits if currently executing out of a 32-bit ACPI table (Revision < 2). This
4984 also affects the iASL compiler constant folding. (Note: as per below, the
4985 iASL compiler no longer allows 64-bit constants within 32-bit tables.)
4986
4987 Fixed a problem where string and buffer objects with "static" pointers
4988 (pointers to initialization data within an ACPI table) were not handled
4989 consistently. The internal object copy operation now always copies the data
4990 to a newly allocated buffer, regardless of whether the source object is
4991 static or not.
4992
4993 Fixed a problem with the FromBCD operator where an implicit result
4994 conversion was improperly performed while storing the result to the target
4995 operand. Since this is an "explicit conversion" operator, the implicit
4996 conversion should never be performed on the output.
4997
4998 Fixed a problem with the CopyObject operator where a copy to an existing
4999 named object did not always completely overwrite the existing object stored
5000 at name. Specifically, a buffer-to-buffer copy did not delete the existing
5001 buffer.
5002
5003 Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces and
5004 structs for consistency.
5005
5006 Code and Data Size: Current and previous core subsystem library sizes are
5007 shown below. These are the code and data sizes for the acpica.lib produced
5008 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5009 any ACPI driver or OSPM code. The debug version of the code includes the
5010 debug output trace mechanism and has a much larger code and data size. Note
5011 that these values will vary depending on the efficiency of the compiler and
5012 the compiler options used during generation.
5013
5014 Previous Release:
5015 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
5016 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
5017 Current Release: (Same sizes)
5018 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
5019 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
5020
5021
5022 2) iASL Compiler/Disassembler:
5023
5024 The compiler now emits a warning if an attempt is made to generate a 64-bit
5025 integer constant from within a 32-bit ACPI table (Revision < 2). The integer
5026 is truncated to 32 bits.
5027
5028 Fixed a problem with large package objects: if the static length of the
5029 package is greater than 255, the "variable length package" opcode is
5030 emitted. Previously, this caused an error. This requires an update to the
5031 ACPI spec, since it currently (incorrectly) states that packages larger than
5032 255 elements are not allowed.
5033
5034 The disassembler now correctly handles variable length packages and packages
5035 larger than 255 elements.
5036
5037 ----------------------------------------
5038 08 April 2005. Summary of changes for version 20050408:
5039
5040 1) ACPI CA Core Subsystem:
5041
5042 Fixed three cases in the interpreter where an "index" argument to an ASL
5043 function was still (internally) 32 bits instead of the required 64 bits.
5044 This was the Index argument to the Index, Mid, and Match operators.
5045
5046 The "strupr" function is now permanently local (AcpiUtStrupr), since this is
5047 not a POSIX-defined function and not present in most kernel-level C
5048 libraries. All references to the C library strupr function have been removed
5049 from the headers.
5050
5051 Completed the deployment of static functions/prototypes. All prototypes with
5052 the static attribute have been moved from the headers to the owning C file.
5053
5054 Implemented an extract option (-e) for the AcpiBin utility (AML binary
5055 utility). This option allows the utility to extract individual ACPI tables
5056 from the output of AcpiDmp. It provides the same functionality of the
5057 acpixtract.pl perl script without the worry of setting the correct perl
5058 options. AcpiBin runs on Windows and has not yet been generated/validated in
5059 the Linux/Unix environment (but should be soon).
5060
5061 Updated and fixed the table dump option for AcpiBin (-d). This option
5062 converts a single ACPI table to a hex/ascii file, similar to the output of
5063 AcpiDmp.
5064
5065 Code and Data Size: Current and previous core subsystem library sizes are
5066 shown below. These are the code and data sizes for the acpica.lib produced
5067 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5068 any ACPI driver or OSPM code. The debug version of the code includes the
5069 debug output trace mechanism and has a much larger code and data size. Note
5070 that these values will vary depending on the efficiency of the compiler and
5071 the compiler options used during generation.
5072
5073 Previous Release:
5074 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
5075 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
5076 Current Release:
5077 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
5078 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
5079
5080
5081 2) iASL Compiler/Disassembler:
5082
5083 Disassembler fix: Added a check to ensure that the table length found in the
5084 ACPI table header within the input file is not longer than the actual input
5085 file size. This indicates some kind of file or table corruption.
5086
5087 ----------------------------------------
5088 29 March 2005. Summary of changes for version 20050329:
5089
5090 1) ACPI CA Core Subsystem:
5091
5092 An error is now generated if an attempt is made to create a Buffer Field of
5093 length zero (A CreateField with a length operand of zero.)
5094
5095 The interpreter now issues a warning whenever executable code at the module
5096 level is detected during ACPI table load. This will give some idea of the
5097 prevalence of this type of code.
5098
5099 Implemented support for references to named objects (other than control
5100 methods) within package objects.
5101
5102 Enhanced package object output for the debug object. Package objects are now
5103 completely dumped, showing all elements.
5104
5105 Enhanced miscellaneous object output for the debug object. Any object can
5106 now be written to the debug object (for example, a device object can be
5107 written, and the type of the object will be displayed.)
5108
5109 The "static" qualifier has been added to all local functions across both the
5110 core subsystem and the iASL compiler.
5111
5112 The number of "long" lines (> 80 chars) within the source has been
5113 significantly reduced, by about 1/3.
5114
5115 Cleaned up all header files to ensure that all CA/iASL functions are
5116 prototyped (even static functions) and the formatting is consistent.
5117
5118 Two new header files have been added, acopcode.h and acnames.h.
5119
5120 Removed several obsolete functions that were no longer used.
5121
5122 Code and Data Size: Current and previous core subsystem library sizes are
5123 shown below. These are the code and data sizes for the acpica.lib produced
5124 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5125 any ACPI driver or OSPM code. The debug version of the code includes the
5126 debug output trace mechanism and has a much larger code and data size. Note
5127 that these values will vary depending on the efficiency of the compiler and
5128 the compiler options used during generation.
5129
5130 Previous Release:
5131 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
5132 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
5133 Current Release:
5134 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
5135 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
5136
5137
5138
5139 2) iASL Compiler/Disassembler:
5140
5141 Fixed a problem with the resource descriptor generation/support. For the
5142 ResourceSourceIndex and the ResourceSource fields, both must be present, or
5143 both must be not present - can't have one without the other.
5144
5145 The compiler now returns non-zero from the main procedure if any errors have
5146 occurred during the compilation.
5147
5148
5149 ----------------------------------------
5150 09 March 2005. Summary of changes for version 20050309:
5151
5152 1) ACPI CA Core Subsystem:
5153
5154 The string-to-buffer implicit conversion code has been modified again after
5155 a change to the ACPI specification. In order to match the behavior of the
5156 other major ACPI implementation, the target buffer is no longer truncated if
5157 the source string is smaller than an existing target buffer. This change
5158 requires an update to the ACPI spec, and should eliminate the recent
5159 AE_AML_BUFFER_LIMIT issues.
5160
5161 The "implicit return" support was rewritten to a new algorithm that solves
5162 the general case. Rather than attempt to determine when a method is about to
5163 exit, the result of every ASL operator is saved momentarily until the very
5164 next ASL operator is executed. Therefore, no matter how the method exits,
5165 there will always be a saved implicit return value. This feature is only
5166 enabled with the AcpiGbl_EnableInterpreterSlack flag, and should eliminate
5167 AE_AML_NO_RETURN_VALUE errors when enabled.
5168
5169 Implemented implicit conversion support for the predicate (operand) of the
5170 If, Else, and While operators. String and Buffer arguments are automatically
5171 converted to Integers.
5172
5173 Changed the string-to-integer conversion behavior to match the new ACPI
5174 errata: "If no integer object exists, a new integer is created. The ASCII
5175 string is interpreted as a hexadecimal constant. Each string character is
5176 interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting
5177 with the first character as the most significant digit, and ending with the
5178 first non-hexadecimal character or end-of-string." This means that the first
5179 non-hex character terminates the conversion and this is the code that was
5180 changed.
5181
5182 Fixed a problem where the ObjectType operator would fail (fault) when used
5183 on an Index of a Package which pointed to a null package element. The
5184 operator now properly returns zero (Uninitialized) in this case.
5185
5186 Fixed a problem where the While operator used excessive memory by not
5187 properly popping the result stack during execution. There was no memory leak
5188 after execution, however. (Code provided by Valery Podrezov.)
5189
5190 Fixed a problem where references to control methods within Package objects
5191 caused the method to be invoked, instead of producing a reference object
5192 pointing to the method.
5193
5194 Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree) to
5195 improve performance and reduce code size. (Code provided by Alexey
5196 Starikovskiy.)
5197
5198 Code and Data Size: Current and previous core subsystem library sizes are
5199 shown below. These are the code and data sizes for the acpica.lib produced
5200 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5201 any ACPI driver or OSPM code. The debug version of the code includes the
5202 debug output trace mechanism and has a much larger code and data size. Note
5203 that these values will vary depending on the efficiency of the compiler and
5204 the compiler options used during generation.
5205
5206 Previous Release:
5207 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
5208 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
5209 Current Release:
5210 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
5211 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
5212
5213
5214 2) iASL Compiler/Disassembler:
5215
5216 Fixed a problem with the Return operator with no arguments. Since the AML
5217 grammar for the byte encoding requires an operand for the Return opcode, the
5218 compiler now emits a Return(Zero) for this case. An ACPI specification
5219 update has been written for this case.
5220
5221 For tables other than the DSDT, namepath optimization is automatically
5222 disabled. This is because SSDTs can be loaded anywhere in the namespace, the
5223 compiler has no knowledge of where, and thus cannot optimize namepaths.
5224
5225 Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was
5226 inadvertently omitted from the ACPI specification, and will require an
5227 update to the spec.
5228
5229 The source file scan for ASCII characters is now optional (-a). This change
5230 was made because some vendors place non-ascii characters within comments.
5231 However, the scan is simply a brute-force byte compare to ensure all
5232 characters in the file are in the range 0x00 to 0x7F.
5233
5234 Fixed a problem with the CondRefOf operator where the compiler was
5235 inappropriately checking for the existence of the target. Since the point of
5236 the operator is to check for the existence of the target at run-time, the
5237 compiler no longer checks for the target existence.
5238
5239 Fixed a problem where errors generated from the internal AML interpreter
5240 during constant folding were not handled properly, causing a fault.
5241
5242 Fixed a problem with overly aggressive range checking for the Stall
5243 operator. The valid range (max 255) is now only checked if the operand is of
5244 type Integer. All other operand types cannot be statically checked.
5245
5246 Fixed a problem where control method references within the RefOf, DeRefOf,
5247 and ObjectType operators were not treated properly. They are now treated as
5248 actual references, not method invocations.
5249
5250 Fixed and enhanced the "list namespace" option (-ln). This option was broken
5251 a number of releases ago.
5252
5253 Improved error handling for the Field, IndexField, and BankField operators.
5254 The compiler now cleanly reports and recovers from errors in the field
5255 component (FieldUnit) list.
5256
5257 Fixed a disassembler problem where the optional ResourceDescriptor fields
5258 TRS and TTP were not always handled correctly.
5259
5260 Disassembler - Comments in output now use "//" instead of "/*"
5261
5262 ----------------------------------------
5263 28 February 2005. Summary of changes for version 20050228:
5264
5265 1) ACPI CA Core Subsystem:
5266
5267 Fixed a problem where the result of an Index() operator (an object
5268 reference) must increment the reference count on the target object for the
5269 life of the object reference.
5270
5271 Implemented AML Interpreter and Debugger support for the new ACPI 3.0
5272 Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and WordSpace
5273 resource descriptors.
5274
5275 Implemented support in the _OSI method for the ACPI 3.0 "Extended Address
5276 Space Descriptor" string, indicating interpreter support for the descriptors
5277 above.
5278
5279 Implemented header support for the new ACPI 3.0 FADT flag bits.
5280
5281 Implemented header support for the new ACPI 3.0 PCI Express bits for the PM1
5282 status/enable registers.
5283
5284 Updated header support for the MADT processor local Apic struct and MADT
5285 platform interrupt source struct for new ACPI 3.0 fields.
5286
5287 Implemented header support for the SRAT and SLIT ACPI tables.
5288
5289 Implemented the -s switch in AcpiExec to enable the "InterpreterSlack" flag
5290 at runtime.
5291
5292 Code and Data Size: Current and previous core subsystem library sizes are
5293 shown below. These are the code and data sizes for the acpica.lib produced
5294 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5295 any ACPI driver or OSPM code. The debug version of the code includes the
5296 debug output trace mechanism and has a much larger code and data size. Note
5297 that these values will vary depending on the efficiency of the compiler and
5298 the compiler options used during generation.
5299
5300 Previous Release:
5301 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
5302 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
5303 Current Release:
5304 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
5305 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
5306
5307
5308 2) iASL Compiler/Disassembler:
5309
5310 Fixed a problem with the internal 64-bit String-to-integer conversion with
5311 strings less than two characters long.
5312
5313 Fixed a problem with constant folding where the result of the Index()
5314 operator can not be considered a constant. This means that Index() cannot be
5315 a type3 opcode and this will require an update to the ACPI specification.
5316
5317 Disassembler: Implemented support for the TTP, MTP, and TRS resource
5318 descriptor fields. These fields were inadvertently ignored and not output in
5319 the disassembly of the resource descriptor.
5320
5321
5322 ----------------------------------------
5323 11 February 2005. Summary of changes for version 20050211:
5324
5325 1) ACPI CA Core Subsystem:
5326
5327 Implemented ACPI 3.0 support for implicit conversion within the Match()
5328 operator. MatchObjects can now be of type integer, buffer, or string instead
5329 of just type integer. Package elements are implicitly converted to the type
5330 of the MatchObject. This change aligns the behavior of Match() with the
5331 behavior of the other logical operators (LLess(), etc.) It also requires an
5332 errata change to the ACPI specification as this support was intended for
5333 ACPI 3.0, but was inadvertently omitted.
5334
5335 Fixed a problem with the internal implicit "to buffer" conversion. Strings
5336 that are converted to buffers will cause buffer truncation if the string is
5337 smaller than the target buffer. Integers that are converted to buffers will
5338 not cause buffer truncation, only zero extension (both as per the ACPI
5339 spec.) The problem was introduced when code was added to truncate the
5340 buffer, but this should not be performed in all cases, only the string case.
5341
5342 Fixed a problem with the Buffer and Package operators where the interpreter
5343 would get confused if two such operators were used as operands to an ASL
5344 operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result
5345 stack was not being popped after the execution of these operators, resulting
5346 in an AE_NO_RETURN_VALUE exception.
5347
5348 Fixed a problem with constructs of the form Store(Index(...),...). The
5349 reference object returned from Index was inadvertently resolved to an actual
5350 value. This problem was introduced in version 20050114 when the behavior of
5351 Store() was modified to restrict the object types that can be used as the
5352 source operand (to match the ACPI specification.)
5353
5354 Reduced excessive stack use within the AcpiGetObjectInfo procedure.
5355
5356 Added a fix to aclinux.h to allow generation of AcpiExec on Linux.
5357
5358 Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct.
5359
5360 Code and Data Size: Current and previous core subsystem library sizes are
5361 shown below. These are the code and data sizes for the acpica.lib produced
5362 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5363 any ACPI driver or OSPM code. The debug version of the code includes the
5364 debug output trace mechanism and has a much larger code and data size. Note
5365 that these values will vary depending on the efficiency of the compiler and
5366 the compiler options used during generation.
5367
5368 Previous Release:
5369 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
5370 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
5371 Current Release:
5372 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
5373 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
5374
5375
5376 2) iASL Compiler/Disassembler:
5377
5378 Fixed a code generation problem in the constant folding optimization code
5379 where incorrect code was generated if a constant was reduced to a buffer
5380 object (i.e., a reduced type 5 opcode.)
5381
5382 Fixed a typechecking problem for the ToBuffer operator. Caused by an
5383 incorrect return type in the internal opcode information table.
5384
5385 ----------------------------------------
5386 25 January 2005. Summary of changes for version 20050125:
5387
5388 1) ACPI CA Core Subsystem:
5389
5390 Fixed a recently introduced problem with the Global Lock where the
5391 underlying semaphore was not created. This problem was introduced in
5392 version 20050114, and caused an AE_AML_NO_OPERAND exception during an
5393 Acquire() operation on _GL.
5394
5395 The local object cache is now optional, and is disabled by default. Both
5396 AcpiExec and the iASL compiler enable the cache because they run in user
5397 mode and this enhances their performance. #define ACPI_ENABLE_OBJECT_CACHE
5398 to enable the local cache.
5399
5400 Fixed an issue in the internal function AcpiUtEvaluateObject concerning the
5401 optional "implicit return" support where an error was returned if no return
5402 object was expected, but one was implicitly returned. AE_OK is now returned
5403 in this case and the implicitly returned object is deleted.
5404 AcpiUtEvaluateObject is only occasionally used, and only to execute reserved
5405 methods such as _STA and _INI where the return type is known up front.
5406
5407 Fixed a few issues with the internal convert-to-integer code. It now returns
5408 an error if an attempt is made to convert a null string, a string of only
5409 blanks/tabs, or a zero-length buffer. This affects both implicit conversion
5410 and explicit conversion via the ToInteger() operator.
5411
5412 The internal debug code in AcpiUtAcquireMutex has been commented out. It is
5413 not needed for normal operation and should increase the performance of the
5414 entire subsystem. The code remains in case it is needed for debug purposes
5415 again.
5416
5417 The AcpiExec source and makefile are included in the Unix/Linux package for
5418 the first time.
5419
5420 Code and Data Size: Current and previous core subsystem library sizes are
5421 shown below. These are the code and data sizes for the acpica.lib produced
5422 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5423 any ACPI driver or OSPM code. The debug version of the code includes the
5424 debug output trace mechanism and has a much larger code and data size. Note
5425 that these values will vary depending on the efficiency of the compiler and
5426 the compiler options used during generation.
5427
5428 Previous Release:
5429 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
5430 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
5431 Current Release:
5432 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
5433 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
5434
5435 2) iASL Compiler/Disassembler:
5436
5437 Switch/Case support: A warning is now issued if the type of the Switch value
5438 cannot be determined at compile time. For example, Switch(Arg0) will
5439 generate the warning, and the type is assumed to be an integer. As per the
5440 ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate the
5441 warning.
5442
5443 Switch/Case support: Implemented support for buffer and string objects as
5444 the switch value. This is an ACPI 3.0 feature, now that LEqual supports
5445 buffers and strings.
5446
5447 Switch/Case support: The emitted code for the LEqual() comparisons now uses
5448 the switch value as the first operand, not the second. The case value is now
5449 the second operand, and this allows the case value to be implicitly
5450 converted to the type of the switch value, not the other way around.
5451
5452 Switch/Case support: Temporary variables are now emitted immediately within
5453 the control method, not at the global level. This means that there are now
5454 36 temps available per-method, not 36 temps per-module as was the case with
5455 the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.)
5456
5457 ----------------------------------------
5458 14 January 2005. Summary of changes for version 20050114:
5459
5460 Added 2005 copyright to all module headers. This affects every module in
5461 the core subsystem, iASL compiler, and the utilities.
5462
5463 1) ACPI CA Core Subsystem:
5464
5465 Fixed an issue with the String-to-Buffer conversion code where the string
5466 null terminator was not included in the buffer after conversion, but there
5467 is existing ASL that assumes the string null terminator is included. This is
5468 the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was
5469 introduced in the previous version when the code was updated to correctly
5470 set the converted buffer size as per the ACPI specification. The ACPI spec
5471 is ambiguous and will be updated to specify that the null terminator must be
5472 included in the converted buffer. This also affects the ToBuffer() ASL
5473 operator.
5474
5475 Fixed a problem with the Mid() ASL/AML operator where it did not work
5476 correctly on Buffer objects. Newly created sub-buffers were not being marked
5477 as initialized.
5478
5479
5480 Fixed a problem in AcpiTbFindTable where incorrect string compares were
5481 performed on the OemId and OemTableId table header fields. These fields are
5482 not null terminated, so strncmp is now used instead of strcmp.
5483
5484 Implemented a restriction on the Store() ASL/AML operator to align the
5485 behavior with the ACPI specification. Previously, any object could be used
5486 as the source operand. Now, the only objects that may be used are Integers,
5487 Buffers, Strings, Packages, Object References, and DDB Handles. If
5488 necessary, the original behavior can be restored by enabling the
5489 EnableInterpreterSlack flag.
5490
5491 Enhanced the optional "implicit return" support to allow an implicit return
5492 value from methods that are invoked externally via the AcpiEvaluateObject
5493 interface. This enables implicit returns from the _STA and _INI methods,
5494 for example.
5495
5496 Changed the Revision() ASL/AML operator to return the current version of the
5497 AML interpreter, in the YYYYMMDD format. Previously, it incorrectly returned
5498 the supported ACPI version (This is the function of the _REV method).
5499
5500 Updated the _REV predefined method to return the currently supported version
5501 of ACPI, now 3.
5502
5503 Implemented batch mode option for the AcpiExec utility (-b).
5504
5505 Code and Data Size: Current and previous core subsystem library sizes are
5506 shown below. These are the code and data sizes for the acpica.lib produced
5507 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5508 any ACPI driver or OSPM code. The debug version of the code includes the
5509 debug output trace mechanism and has a much larger code and data size. Note
5510 that these values will vary depending on the efficiency of the compiler and
5511 the compiler options used during generation.
5512
5513 Previous Release:
5514 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
5515 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
5516 Current Release:
5517 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
5518 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
5519
5520 ----------------------------------------
5521 10 December 2004. Summary of changes for version 20041210:
5522
5523 ACPI 3.0 support is nearing completion in both the iASL compiler and the
5524 ACPI CA core subsystem.
5525
5526 1) ACPI CA Core Subsystem:
5527
5528 Fixed a problem in the ToDecimalString operator where the resulting string
5529 length was incorrectly calculated. The length is now calculated exactly,
5530 eliminating incorrect AE_STRING_LIMIT exceptions.
5531
5532 Fixed a problem in the ToHexString operator to allow a maximum 200 character
5533 string to be produced.
5534
5535 Fixed a problem in the internal string-to-buffer and buffer-to-buffer copy
5536 routine where the length of the resulting buffer was not truncated to the
5537 new size (if the target buffer already existed).
5538
5539 Code and Data Size: Current and previous core subsystem library sizes are
5540 shown below. These are the code and data sizes for the acpica.lib produced
5541 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5542 any ACPI driver or OSPM code. The debug version of the code includes the
5543 debug output trace mechanism and has a much larger code and data size. Note
5544 that these values will vary depending on the efficiency of the compiler and
5545 the compiler options used during generation.
5546
5547 Previous Release:
5548 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
5549 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
5550 Current Release:
5551 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
5552 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
5553
5554
5555 2) iASL Compiler/Disassembler:
5556
5557 Implemented the new ACPI 3.0 resource template macros - DWordSpace,
5558 ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace.
5559 Includes support in the disassembler.
5560
5561 Implemented support for the new (ACPI 3.0) parameter to the Register macro,
5562 AccessSize.
5563
5564 Fixed a problem where the _HE resource name for the Interrupt macro was
5565 referencing bit 0 instead of bit 1.
5566
5567 Implemented check for maximum 255 interrupts in the Interrupt macro.
5568
5569 Fixed a problem with the predefined resource descriptor names where
5570 incorrect AML code was generated if the offset within the resource buffer
5571 was 0 or 1. The optimizer shortened the AML code to a single byte opcode
5572 but did not update the surrounding package lengths.
5573
5574 Changes to the Dma macro: All channels within the channel list must be in
5575 the range 0-7. Maximum 8 channels can be specified. BusMaster operand is
5576 optional (default is BusMaster).
5577
5578 Implemented check for maximum 7 data bytes for the VendorShort macro.
5579
5580 The ReadWrite parameter is now optional for the Memory32 and similar macros.
5581
5582 ----------------------------------------
5583 03 December 2004. Summary of changes for version 20041203:
5584
5585 1) ACPI CA Core Subsystem:
5586
5587 The low-level field insertion/extraction code (exfldio) has been completely
5588 rewritten to eliminate unnecessary complexity, bugs, and boundary
5589 conditions.
5590
5591 Fixed a problem in the ToInteger, ToBuffer, ToHexString, and ToDecimalString
5592 operators where the input operand could be inadvertently deleted if no
5593 conversion was necessary (e.g., if the input to ToInteger was an Integer
5594 object.)
5595
5596 Fixed a problem with the ToDecimalString and ToHexString where an incorrect
5597 exception code was returned if the resulting string would be > 200 chars.
5598 AE_STRING_LIMIT is now returned.
5599
5600 Fixed a problem with the Concatenate operator where AE_OK was always
5601 returned, even if the operation failed.
5602
5603 Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128
5604 semaphores to be allocated.
5605
5606 Code and Data Size: Current and previous core subsystem library sizes are
5607 shown below. These are the code and data sizes for the acpica.lib produced
5608 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5609 any ACPI driver or OSPM code. The debug version of the code includes the
5610 debug output trace mechanism and has a much larger code and data size. Note
5611 that these values will vary depending on the efficiency of the compiler and
5612 the compiler options used during generation.
5613
5614 Previous Release:
5615 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
5616 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
5617 Current Release:
5618 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
5619 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
5620
5621
5622 2) iASL Compiler/Disassembler:
5623
5624 Fixed typechecking for the ObjectType and SizeOf operators. Problem was
5625 recently introduced in 20041119.
5626
5627 Fixed a problem with the ToUUID macro where the upper nybble of each buffer
5628 byte was inadvertently set to zero.
5629
5630 ----------------------------------------
5631 19 November 2004. Summary of changes for version 20041119:
5632
5633 1) ACPI CA Core Subsystem:
5634
5635 Fixed a problem in the internal ConvertToInteger routine where new integers
5636 were not truncated to 32 bits for 32-bit ACPI tables. This routine converts
5637 buffers and strings to integers.
5638
5639 Implemented support to store a value to an Index() on a String object. This
5640 is an ACPI 2.0 feature that had not yet been implemented.
5641
5642 Implemented new behavior for storing objects to individual package elements
5643 (via the Index() operator). The previous behavior was to invoke the implicit
5644 conversion rules if an object was already present at the index. The new
5645 behavior is to simply delete any existing object and directly store the new
5646 object. Although the ACPI specification seems unclear on this subject, other
5647 ACPI implementations behave in this manner. (This is the root of the
5648 AE_BAD_HEX_CONSTANT issue.)
5649
5650 Modified the RSDP memory scan mechanism to support the extended checksum for
5651 ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid
5652 RSDP signature is found with a valid checksum.
5653
5654 Code and Data Size: Current and previous core subsystem library sizes are
5655 shown below. These are the code and data sizes for the acpica.lib produced
5656 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5657 any ACPI driver or OSPM code. The debug version of the code includes the
5658 debug output trace mechanism and has a much larger code and data size. Note
5659 that these values will vary depending on the efficiency of the compiler and
5660 the compiler options used during generation.
5661
5662 Previous Release:
5663 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
5664 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
5665 Current Release:
5666 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
5667 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
5668
5669
5670 2) iASL Compiler/Disassembler:
5671
5672 Fixed a missing semicolon in the aslcompiler.y file.
5673
5674 ----------------------------------------
5675 05 November 2004. Summary of changes for version 20041105:
5676
5677 1) ACPI CA Core Subsystem:
5678
5679 Implemented support for FADT revision 2. This was an interim table (between
5680 ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register.
5681
5682 Implemented optional support to allow uninitialized LocalX and ArgX
5683 variables in a control method. The variables are initialized to an Integer
5684 object with a value of zero. This support is enabled by setting the
5685 AcpiGbl_EnableInterpreterSlack flag to TRUE.
5686
5687 Implemented support for Integer objects for the SizeOf operator. Either 4
5688 or 8 is returned, depending on the current integer size (32-bit or 64-bit,
5689 depending on the parent table revision).
5690
5691 Fixed a problem in the implementation of the SizeOf and ObjectType operators
5692 where the operand was resolved to a value too early, causing incorrect
5693 return values for some objects.
5694
5695 Fixed some possible memory leaks during exceptional conditions.
5696
5697 Code and Data Size: Current and previous core subsystem library sizes are
5698 shown below. These are the code and data sizes for the acpica.lib produced
5699 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5700 any ACPI driver or OSPM code. The debug version of the code includes the
5701 debug output trace mechanism and has a much larger code and data size. Note
5702 that these values will vary depending on the efficiency of the compiler and
5703 the compiler options used during generation.
5704
5705 Previous Release:
5706 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
5707 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
5708 Current Release:
5709 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
5710 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
5711
5712
5713 2) iASL Compiler/Disassembler:
5714
5715 Implemented support for all ACPI 3.0 reserved names and methods.
5716
5717 Implemented all ACPI 3.0 grammar elements in the front-end, including
5718 support for semicolons.
5719
5720 Implemented the ACPI 3.0 Function() and ToUUID() macros
5721
5722 Fixed a problem in the disassembler where a Scope() operator would not be
5723 emitted properly if the target of the scope was in another table.
5724
5725 ----------------------------------------
5726 15 October 2004. Summary of changes for version 20041015:
5727
5728 Note: ACPI CA is currently undergoing an in-depth and complete formal
5729 evaluation to test/verify the following areas. Other suggestions are
5730 welcome. This will result in an increase in the frequency of releases and
5731 the number of bug fixes in the next few months.
5732 - Functional tests for all ASL/AML operators
5733 - All implicit/explicit type conversions
5734 - Bit fields and operation regions
5735 - 64-bit math support and 32-bit-only "truncated" math support
5736 - Exceptional conditions, both compiler and interpreter
5737 - Dynamic object deletion and memory leaks
5738 - ACPI 3.0 support when implemented
5739 - External interfaces to the ACPI subsystem
5740
5741
5742 1) ACPI CA Core Subsystem:
5743
5744 Fixed two alignment issues on 64-bit platforms - within debug statements in
5745 AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the Address
5746 field within the non-aligned ACPI generic address structure.
5747
5748 Fixed a problem in the Increment and Decrement operators where incorrect
5749 operand resolution could result in the inadvertent modification of the
5750 original integer when the integer is passed into another method as an
5751 argument and the arg is then incremented/decremented.
5752
5753 Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-bit
5754 BCD number were truncated during conversion.
5755
5756 Fixed a problem in the ToDecimal operator where the length of the resulting
5757 string could be set incorrectly too long if the input operand was a Buffer
5758 object.
5759
5760 Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte (0)
5761 within a buffer would prematurely terminate a compare between buffer
5762 objects.
5763
5764 Added a check for string overflow (>200 characters as per the ACPI
5765 specification) during the Concatenate operator with two string operands.
5766
5767 Code and Data Size: Current and previous core subsystem library sizes are
5768 shown below. These are the code and data sizes for the acpica.lib produced
5769 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5770 any ACPI driver or OSPM code. The debug version of the code includes the
5771 debug output trace mechanism and has a much larger code and data size. Note
5772 that these values will vary depending on the efficiency of the compiler and
5773 the compiler options used during generation.
5774
5775 Previous Release:
5776 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
5777 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
5778 Current Release:
5779 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
5780 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
5781
5782
5783
5784 2) iASL Compiler/Disassembler:
5785
5786 Allow the use of the ObjectType operator on uninitialized Locals and Args
5787 (returns 0 as per the ACPI specification).
5788
5789 Fixed a problem where the compiler would fault if there was a syntax error
5790 in the FieldName of all of the various CreateXXXField operators.
5791
5792 Disallow the use of lower case letters within the EISAID macro, as per the
5793 ACPI specification. All EISAID strings must be of the form "UUUNNNN" Where
5794 U is an uppercase letter and N is a hex digit.
5795
5796
5797 ----------------------------------------
5798 06 October 2004. Summary of changes for version 20041006:
5799
5800 1) ACPI CA Core Subsystem:
5801
5802 Implemented support for the ACPI 3.0 Timer operator. This ASL function
5803 implements a 64-bit timer with 100 nanosecond granularity.
5804
5805 Defined a new OSL interface, AcpiOsGetTimer. This interface is used to
5806 implement the ACPI 3.0 Timer operator. This allows the host OS to implement
5807 the timer with the best clock available. Also, it keeps the core subsystem
5808 out of the clock handling business, since the host OS (usually) performs
5809 this function.
5810
5811 Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write)
5812 functions use a 64-bit address which is part of the packed ACPI Generic
5813 Address Structure. Since the structure is non-aligned, the alignment macros
5814 are now used to extract the address to a local variable before use.
5815
5816 Fixed a problem where the ToInteger operator assumed all input strings were
5817 hexadecimal. The operator now handles both decimal strings and hex strings
5818 (prefixed with "0x").
5819
5820 Fixed a problem where the string length in the string object created as a
5821 result of the internal ConvertToString procedure could be incorrect. This
5822 potentially affected all implicit conversions and also the ToDecimalString
5823 and ToHexString operators.
5824
5825 Fixed two problems in the ToString operator. If the length parameter was
5826 zero, an incorrect string object was created and the value of the input
5827 length parameter was inadvertently changed from zero to Ones.
5828
5829 Fixed a problem where the optional ResourceSource string in the ExtendedIRQ
5830 resource macro was ignored.
5831
5832 Simplified the interfaces to the internal division functions, reducing code
5833 size and complexity.
5834
5835 Code and Data Size: Current and previous core subsystem library sizes are
5836 shown below. These are the code and data sizes for the acpica.lib produced
5837 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5838 any ACPI driver or OSPM code. The debug version of the code includes the
5839 debug output trace mechanism and has a much larger code and data size. Note
5840 that these values will vary depending on the efficiency of the compiler and
5841 the compiler options used during generation.
5842
5843 Previous Release:
5844 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
5845 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
5846 Current Release:
5847 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
5848 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
5849
5850
5851 2) iASL Compiler/Disassembler:
5852
5853 Implemented support for the ACPI 3.0 Timer operator.
5854
5855 Fixed a problem where the Default() operator was inadvertently ignored in a
5856 Switch/Case block. This was a problem in the translation of the Switch
5857 statement to If...Else pairs.
5858
5859 Added support to allow a standalone Return operator, with no parentheses (or
5860 operands).
5861
5862 Fixed a problem with code generation for the ElseIf operator where the
5863 translated Else...If parse tree was improperly constructed leading to the
5864 loss of some code.
5865
5866 ----------------------------------------
5867 22 September 2004. Summary of changes for version 20040922:
5868
5869 1) ACPI CA Core Subsystem:
5870
5871 Fixed a problem with the implementation of the LNot() operator where "Ones"
5872 was not returned for the TRUE case. Changed the code to return Ones instead
5873 of (!Arg) which was usually 1. This change affects iASL constant folding for
5874 this operator also.
5875
5876 Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was not
5877 initialized properly -- Now zero the entire buffer in this case where the
5878 buffer already exists.
5879
5880 Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32
5881 Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all
5882 related code considerably. This will require changes/updates to all OS
5883 interface layers (OSLs.)
5884
5885 Implemented a new external interface, AcpiInstallExceptionHandler, to allow
5886 a system exception handler to be installed. This handler is invoked upon any
5887 run-time exception that occurs during control method execution.
5888
5889 Added support for the DSDT in AcpiTbFindTable. This allows the
5890 DataTableRegion() operator to access the local copy of the DSDT.
5891
5892 Code and Data Size: Current and previous core subsystem library sizes are
5893 shown below. These are the code and data sizes for the acpica.lib produced
5894 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5895 any ACPI driver or OSPM code. The debug version of the code includes the
5896 debug output trace mechanism and has a much larger code and data size. Note
5897 that these values will vary depending on the efficiency of the compiler and
5898 the compiler options used during generation.
5899
5900 Previous Release:
5901 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
5902 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
5903 Current Release:
5904 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
5905 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
5906
5907
5908 2) iASL Compiler/Disassembler:
5909
5910 Fixed a problem with constant folding and the LNot operator. LNot was
5911 returning 1 in the TRUE case, not Ones as per the ACPI specification. This
5912 could result in the generation of an incorrect folded/reduced constant.
5913
5914 End-Of-File is now allowed within a "//"-style comment. A parse error no
5915 longer occurs if such a comment is at the very end of the input ASL source
5916 file.
5917
5918 Implemented the "-r" option to override the Revision in the table header.
5919 The initial use of this option will be to simplify the evaluation of the AML
5920 interpreter by allowing a single ASL source module to be compiled for either
5921 32-bit or 64-bit integers.
5922
5923
5924 ----------------------------------------
5925 27 August 2004. Summary of changes for version 20040827:
5926
5927 1) ACPI CA Core Subsystem:
5928
5929 - Implemented support for implicit object conversion in the non-numeric
5930 logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual, and
5931 LNotEqual.) Any combination of Integers/Strings/Buffers may now be used;
5932 the second operand is implicitly converted on the fly to match the type of
5933 the first operand. For example:
5934
5935 LEqual (Source1, Source2)
5936
5937 Source1 and Source2 must each evaluate to an integer, a string, or a buffer.
5938 The data type of Source1 dictates the required type of Source2. Source2 is
5939 implicitly converted if necessary to match the type of Source1.
5940
5941 - Updated and corrected the behavior of the string conversion support. The
5942 rules concerning conversion of buffers to strings (according to the ACPI
5943 specification) are as follows:
5944
5945 ToDecimalString - explicit byte-wise conversion of buffer to string of
5946 decimal values (0-255) separated by commas. ToHexString - explicit byte-wise
5947 conversion of buffer to string of hex values (0-FF) separated by commas.
5948 ToString - explicit byte-wise conversion of buffer to string. Byte-by-byte
5949 copy with no transform except NULL terminated. Any other implicit buffer-to-
5950 string conversion - byte-wise conversion of buffer to string of hex values
5951 (0-FF) separated by spaces.
5952
5953 - Fixed typo in definition of AcpiGbl_EnableInterpreterSlack.
5954
5955 - Fixed a problem in AcpiNsGetPathnameLength where the returned length was
5956 one byte too short in the case of a node in the root scope. This could
5957 cause a fault during debug output.
5958
5959 - Code and Data Size: Current and previous core subsystem library sizes are
5960 shown below. These are the code and data sizes for the acpica.lib produced
5961 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
5962 any ACPI driver or OSPM code. The debug version of the code includes the
5963 debug output trace mechanism and has a much larger code and data size. Note
5964 that these values will vary depending on the efficiency of the compiler and
5965 the compiler options used during generation.
5966
5967 Previous Release:
5968 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
5969 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
5970 Current Release:
5971 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
5972 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
5973
5974
5975 2) iASL Compiler/Disassembler:
5976
5977 - Fixed a Linux generation error.
5978
5979
5980 ----------------------------------------
5981 16 August 2004. Summary of changes for version 20040816:
5982
5983 1) ACPI CA Core Subsystem:
5984
5985 Designed and implemented support within the AML interpreter for the so-
5986 called "implicit return". This support returns the result of the last ASL
5987 operation within a control method, in the absence of an explicit Return()
5988 operator. A few machines depend on this behavior, even though it is not
5989 explicitly supported by the ASL language. It is optional support that can
5990 be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag.
5991
5992 Removed support for the PCI_Config address space from the internal low level
5993 hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This
5994 support was not used internally, and would not work correctly anyway because
5995 the PCI bus number and segment number were not supported. There are
5996 separate interfaces for PCI configuration space access because of the unique
5997 interface.
5998
5999 Code and Data Size: Current and previous core subsystem library sizes are
6000 shown below. These are the code and data sizes for the acpica.lib produced
6001 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
6002 any ACPI driver or OSPM code. The debug version of the code includes the
6003 debug output trace mechanism and has a much larger code and data size. Note
6004 that these values will vary depending on the efficiency of the compiler and
6005 the compiler options used during generation.
6006
6007 Previous Release:
6008 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
6009 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
6010 Current Release:
6011 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
6012 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
6013
6014
6015 2) iASL Compiler/Disassembler:
6016
6017 Fixed a problem where constants in ASL expressions at the root level (not
6018 within a control method) could be inadvertently truncated during code
6019 generation. This problem was introduced in the 20040715 release.
6020
6021
6022 ----------------------------------------
6023 15 July 2004. Summary of changes for version 20040715:
6024
6025 1) ACPI CA Core Subsystem:
6026
6027 Restructured the internal HW GPE interfaces to pass/track the current state
6028 of interrupts (enabled/disabled) in order to avoid possible deadlock and
6029 increase flexibility of the interfaces.
6030
6031 Implemented a "lexicographical compare" for String and Buffer objects within
6032 the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual --
6033 as per further clarification to the ACPI specification. Behavior is similar
6034 to C library "strcmp".
6035
6036 Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable
6037 external function. In the 32-bit non-debug case, the stack use has been
6038 reduced from 168 bytes to 32 bytes.
6039
6040 Deployed a new run-time configuration flag, AcpiGbl_EnableInterpreterSlack,
6041 whose purpose is to allow the AML interpreter to forgive certain bad AML
6042 constructs. Default setting is FALSE.
6043
6044 Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field IO
6045 support code. If enabled, it allows field access to go beyond the end of a
6046 region definition if the field is within the region length rounded up to the
6047 next access width boundary (a common coding error.)
6048
6049 Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to
6050 ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also, these
6051 symbols are lowercased by the latest version of the AcpiSrc tool.
6052
6053 The prototypes for the PCI interfaces in acpiosxf.h have been updated to
6054 rename "Register" to simply "Reg" to prevent certain compilers from
6055 complaining.
6056
6057 Code and Data Size: Current and previous core subsystem library sizes are
6058 shown below. These are the code and data sizes for the acpica.lib produced
6059 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
6060 any ACPI driver or OSPM code. The debug version of the code includes the
6061 debug output trace mechanism and has a much larger code and data size. Note
6062 that these values will vary depending on the efficiency of the compiler and
6063 the compiler options used during generation.
6064
6065 Previous Release:
6066 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
6067 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
6068 Current Release:
6069 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
6070 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
6071
6072
6073 2) iASL Compiler/Disassembler:
6074
6075 Implemented full support for Package objects within the Case() operator.
6076 Note: The Break() operator is currently not supported within Case blocks
6077 (TermLists) as there is some question about backward compatibility with ACPI
6078 1.0 interpreters.
6079
6080
6081 Fixed a problem where complex terms were not supported properly within the
6082 Switch() operator.
6083
6084 Eliminated extraneous warning for compiler-emitted reserved names of the
6085 form "_T_x". (Used in Switch/Case operators.)
6086
6087 Eliminated optimization messages for "_T_x" objects and small constants
6088 within the DefinitionBlock operator.
6089
6090
6091 ----------------------------------------
6092 15 June 2004. Summary of changes for version 20040615:
6093
6094 1) ACPI CA Core Subsystem:
6095
6096 Implemented support for Buffer and String objects (as per ACPI 2.0) for the
6097 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
6098 LLessEqual.
6099
6100 All directory names in the entire source package are lower case, as they
6101 were in earlier releases.
6102
6103 Implemented "Disassemble" command in the AML debugger that will disassemble
6104 a single control method.
6105
6106 Code and Data Size: Current and previous core subsystem library sizes are
6107 shown below. These are the code and data sizes for the acpica.lib produced
6108 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
6109 any ACPI driver or OSPM code. The debug version of the code includes the
6110 debug output trace mechanism and has a much larger code and data size. Note
6111 that these values will vary depending on the efficiency of the compiler and
6112 the compiler options used during generation.
6113
6114 Previous Release:
6115 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
6116 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
6117
6118 Current Release:
6119 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
6120 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
6121
6122
6123 2) iASL Compiler/Disassembler:
6124
6125 Implemented support for Buffer and String objects (as per ACPI 2.0) for the
6126 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
6127 LLessEqual.
6128
6129 All directory names in the entire source package are lower case, as they
6130 were in earlier releases.
6131
6132 Fixed a fault when using the -g or -d<nofilename> options if the FADT was
6133 not found.
6134
6135 Fixed an issue with the Windows version of the compiler where later versions
6136 of Windows place the FADT in the registry under the name "FADT" and not
6137 "FACP" as earlier versions did. This applies when using the -g or -
6138 d<nofilename> options. The compiler now looks for both strings as
6139 necessary.
6140
6141 Fixed a problem with compiler namepath optimization where a namepath within
6142 the Scope() operator could not be optimized if the namepath was a subpath of
6143 the current scope path.
6144
6145 ----------------------------------------
6146 27 May 2004. Summary of changes for version 20040527:
6147
6148 1) ACPI CA Core Subsystem:
6149
6150 Completed a new design and implementation for EBDA (Extended BIOS Data Area)
6151 support in the RSDP scan code. The original code improperly scanned for the
6152 EBDA by simply scanning from memory location 0 to 0x400. The correct method
6153 is to first obtain the EBDA pointer from within the BIOS data area, then
6154 scan 1K of memory starting at the EBDA pointer. There appear to be few if
6155 any machines that place the RSDP in the EBDA, however.
6156
6157 Integrated a fix for a possible fault during evaluation of BufferField
6158 arguments. Obsolete code that was causing the problem was removed.
6159
6160 Found and fixed a problem in the Field Support Code where data could be
6161 corrupted on a bit field read that starts on an aligned boundary but does
6162 not end on an aligned boundary. Merged the read/write "datum length"
6163 calculation code into a common procedure.
6164
6165 Rolled in a couple of changes to the FreeBSD-specific header.
6166
6167
6168 Code and Data Size: Current and previous core subsystem library sizes are
6169 shown below. These are the code and data sizes for the acpica.lib produced
6170 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
6171 any ACPI driver or OSPM code. The debug version of the code includes the
6172 debug output trace mechanism and has a much larger code and data size. Note
6173 that these values will vary depending on the efficiency of the compiler and
6174 the compiler options used during generation.
6175
6176 Previous Release:
6177 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
6178 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
6179 Current Release:
6180 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
6181 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
6182
6183
6184 2) iASL Compiler/Disassembler:
6185
6186 Fixed a generation warning produced by some overly-verbose compilers for a
6187 64-bit constant.
6188
6189 ----------------------------------------
6190 14 May 2004. Summary of changes for version 20040514:
6191
6192 1) ACPI CA Core Subsystem:
6193
6194 Fixed a problem where hardware GPE enable bits sometimes not set properly
6195 during and after GPE method execution. Result of 04/27 changes.
6196
6197 Removed extra "clear all GPEs" when sleeping/waking.
6198
6199 Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single
6200 AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above to
6201 the new AcpiEv* calls as appropriate.
6202
6203 ACPI_OS_NAME was removed from the OS-specific headers. The default name is
6204 now "Microsoft Windows NT" for maximum compatibility. However this can be
6205 changed by modifying the acconfig.h file.
6206
6207 Allow a single invocation of AcpiInstallNotifyHandler for a handler that
6208 traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag.
6209
6210 Run _INI methods on ThermalZone objects. This is against the ACPI
6211 specification, but there is apparently ASL code in the field that has these
6212 _INI methods, and apparently "other" AML interpreters execute them.
6213
6214 Performed a full 16/32/64 bit lint that resulted in some small changes.
6215
6216 Added a sleep simulation command to the AML debugger to test sleep code.
6217
6218 Code and Data Size: Current and previous core subsystem library sizes are
6219 shown below. These are the code and data sizes for the acpica.lib produced
6220 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
6221 any ACPI driver or OSPM code. The debug version of the code includes the
6222 debug output trace mechanism and has a much larger code and data size. Note
6223 that these values will vary depending on the efficiency of the compiler and
6224 the compiler options used during generation.
6225
6226 Previous Release:
6227 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
6228 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
6229 Current Release:
6230 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
6231 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
6232
6233 ----------------------------------------
6234 27 April 2004. Summary of changes for version 20040427:
6235
6236 1) ACPI CA Core Subsystem:
6237
6238 Completed a major overhaul of the GPE handling within ACPI CA. There are
6239 now three types of GPEs: wake-only, runtime-only, and combination wake/run.
6240 The only GPEs allowed to be combination wake/run are for button-style
6241 devices such as a control-method power button, control-method sleep button,
6242 or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are not
6243 referenced by any _PRW methods are marked for "runtime" and hardware
6244 enabled. Any GPE that is referenced by a _PRW method is marked for "wake"
6245 (and disabled at runtime). However, at sleep time, only those GPEs that
6246 have been specifically enabled for wake via the AcpiEnableGpe interface will
6247 actually be hardware enabled.
6248
6249 A new external interface has been added, AcpiSetGpeType(), that is meant to
6250 be used by device drivers to force a GPE to a particular type. It will be
6251 especially useful for the drivers for the button devices mentioned above.
6252
6253 Completed restructuring of the ACPI CA initialization sequence so that
6254 default operation region handlers are installed before GPEs are initialized
6255 and the _PRW methods are executed. This will prevent errors when the _PRW
6256 methods attempt to access system memory or I/O space.
6257
6258 GPE enable/disable no longer reads the GPE enable register. We now keep the
6259 enable info for runtime and wake separate and in the GPE_EVENT_INFO. We
6260 thus no longer depend on the hardware to maintain these bits.
6261
6262 Always clear the wake status and fixed/GPE status bits before sleep, even
6263 for state S5.
6264
6265 Improved the AML debugger output for displaying the GPE blocks and their
6266 current status.
6267
6268 Added new strings for the _OSI method, of the form "Windows 2001 SPx" where
6269 x = 0,1,2,3,4.
6270
6271 Fixed a problem where the physical address was incorrectly calculated when
6272 the Load() operator was used to directly load from an Operation Region (vs.
6273 loading from a Field object.) Also added check for minimum table length for
6274 this case.
6275
6276 Fix for multiple mutex acquisition. Restore original thread SyncLevel on
6277 mutex release.
6278
6279 Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for
6280 consistency with the other fields returned.
6281
6282 Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such
6283 structure for each GPE in the system, so the size of this structure is
6284 important.
6285
6286 CPU stack requirement reduction: Cleaned up the method execution and object
6287 evaluation paths so that now a parameter structure is passed, instead of
6288 copying the various method parameters over and over again.
6289
6290 In evregion.c: Correctly exit and reenter the interpreter region if and
6291 only if dispatching an operation region request to a user-installed handler.
6292 Do not exit/reenter when dispatching to a default handler (e.g., default
6293 system memory or I/O handlers)
6294
6295
6296 Notes for updating drivers for the new GPE support. The following changes
6297 must be made to ACPI-related device drivers that are attached to one or more
6298 GPEs: (This information will be added to the ACPI CA Programmer Reference.)
6299
6300 1) AcpiInstallGpeHandler no longer automatically enables the GPE, you must
6301 explicitly call AcpiEnableGpe.
6302 2) There is a new interface called AcpiSetGpeType. This should be called
6303 before enabling the GPE. Also, this interface will automatically disable
6304 the GPE if it is currently enabled.
6305 3) AcpiEnableGpe no longer supports a GPE type flag.
6306
6307 Specific drivers that must be changed:
6308 1) EC driver:
6309 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED,
6310 AeGpeHandler, NULL);
6311 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME);
6312 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR);
6313
6314 2) Button Drivers (Power, Lid, Sleep):
6315 Run _PRW method under parent device
6316 If _PRW exists: /* This is a control-method button */
6317 Extract GPE number and possibly GpeDevice
6318 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN);
6319 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR);
6320
6321 For all other devices that have _PRWs, we automatically set the GPE type to
6322 ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled. This
6323 must be done on a selective basis, usually requiring some kind of user app
6324 to allow the user to pick the wake devices.
6325
6326
6327 Code and Data Size: Current and previous core subsystem library sizes are
6328 shown below. These are the code and data sizes for the acpica.lib produced
6329 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
6330 any ACPI driver or OSPM code. The debug version of the code includes the
6331 debug output trace mechanism and has a much larger code and data size. Note
6332 that these values will vary depending on the efficiency of the compiler and
6333 the compiler options used during generation.
6334
6335 Previous Release:
6336 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
6337 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
6338 Current Release:
6339
6340 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
6341 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
6342
6343
6344
6345 ----------------------------------------
6346 02 April 2004. Summary of changes for version 20040402:
6347
6348 1) ACPI CA Core Subsystem:
6349
6350 Fixed an interpreter problem where an indirect store through an ArgX
6351 parameter was incorrectly applying the "implicit conversion rules" during
6352 the store. From the ACPI specification: "If the target is a method local or
6353 argument (LocalX or ArgX), no conversion is performed and the result is
6354 stored directly to the target". The new behavior is to disable implicit
6355 conversion during ALL stores to an ArgX.
6356
6357 Changed the behavior of the _PRW method scan to ignore any and all errors
6358 returned by a given _PRW. This prevents the scan from aborting from the
6359 failure of any single _PRW.
6360
6361 Moved the runtime configuration parameters from the global init procedure to
6362 static variables in acglobal.h. This will allow the host to override the
6363 default values easily.
6364
6365 Code and Data Size: Current and previous core subsystem library sizes are
6366 shown below. These are the code and data sizes for the acpica.lib produced
6367 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
6368 any ACPI driver or OSPM code. The debug version of the code includes the
6369 debug output trace mechanism and has a much larger code and data size. Note
6370 that these values will vary depending on the efficiency of the compiler and
6371 the compiler options used during generation.
6372
6373 Previous Release:
6374 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
6375 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
6376 Current Release:
6377 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
6378 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
6379
6380
6381 2) iASL Compiler/Disassembler:
6382
6383 iASL now fully disassembles SSDTs. However, External() statements are not
6384 generated automatically for unresolved symbols at this time. This is a
6385 planned feature for future implementation.
6386
6387 Fixed a scoping problem in the disassembler that occurs when the type of the
6388 target of a Scope() operator is overridden. This problem caused an
6389 incorrectly nested internal namespace to be constructed.
6390
6391 Any warnings or errors that are emitted during disassembly are now commented
6392 out automatically so that the resulting file can be recompiled without any
6393 hand editing.
6394
6395 ----------------------------------------
6396 26 March 2004. Summary of changes for version 20040326:
6397
6398 1) ACPI CA Core Subsystem:
6399
6400 Implemented support for "wake" GPEs via interaction between GPEs and the
6401 _PRW methods. Every GPE that is pointed to by one or more _PRWs is
6402 identified as a WAKE GPE and by default will no longer be enabled at
6403 runtime. Previously, we were blindly enabling all GPEs with a corresponding
6404 _Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway. We
6405 believe this has been the cause of thousands of "spurious" GPEs on some
6406 systems.
6407
6408 This new GPE behavior is can be reverted to the original behavior (enable
6409 ALL GPEs at runtime) via a runtime flag.
6410
6411 Fixed a problem where aliased control methods could not access objects
6412 properly. The proper scope within the namespace was not initialized
6413 (transferred to the target of the aliased method) before executing the
6414 target method.
6415
6416 Fixed a potential race condition on internal object deletion on the return
6417 object in AcpiEvaluateObject.
6418
6419 Integrated a fix for resource descriptors where both _MEM and _MTP were
6420 being extracted instead of just _MEM. (i.e. bitmask was incorrectly too
6421 wide, 0x0F instead of 0x03.)
6422
6423 Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName, preventing a
6424 fault in some cases.
6425
6426 Updated Notify() values for debug statements in evmisc.c
6427
6428 Return proper status from AcpiUtMutexInitialize, not just simply AE_OK.
6429
6430 Code and Data Size: Current and previous core subsystem library sizes are
6431 shown below. These are the code and data sizes for the acpica.lib produced
6432 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
6433 any ACPI driver or OSPM code. The debug version of the code includes the
6434 debug output trace mechanism and has a much larger code and data size. Note
6435 that these values will vary depending on the efficiency of the compiler and
6436 the compiler options used during generation.
6437
6438 Previous Release:
6439
6440 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
6441 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
6442 Current Release:
6443 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
6444 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
6445
6446 ----------------------------------------
6447 11 March 2004. Summary of changes for version 20040311:
6448
6449 1) ACPI CA Core Subsystem:
6450
6451 Fixed a problem where errors occurring during the parse phase of control
6452 method execution did not abort cleanly. For example, objects created and
6453 installed in the namespace were not deleted. This caused all subsequent
6454 invocations of the method to return the AE_ALREADY_EXISTS exception.
6455
6456 Implemented a mechanism to force a control method to "Serialized" execution
6457 if the method attempts to create namespace objects. (The root of the
6458 AE_ALREADY_EXISTS problem.)
6459
6460 Implemented support for the predefined _OSI "internal" control method.
6461 Initial supported strings are "Linux", "Windows 2000", "Windows 2001", and
6462 "Windows 2001.1", and can be easily upgraded for new strings as necessary.
6463 This feature will allow "other" operating systems to execute the fully
6464 tested, "Windows" code path through the ASL code
6465
6466 Global Lock Support: Now allows multiple acquires and releases with any
6467 internal thread. Removed concept of "owning thread" for this special mutex.
6468
6469 Fixed two functions that were inappropriately declaring large objects on the
6470 CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage during
6471 method execution considerably.
6472
6473 Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the
6474 S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT.
6475
6476 Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs
6477 defined on the machine.
6478
6479 Implemented two runtime options: One to force all control method execution
6480 to "Serialized" to mimic Windows behavior, another to disable _OSI support
6481 if it causes problems on a given machine.
6482
6483 Code and Data Size: Current and previous core subsystem library sizes are
6484 shown below. These are the code and data sizes for the acpica.lib produced
6485 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
6486 any ACPI driver or OSPM code. The debug version of the code includes the
6487 debug output trace mechanism and has a much larger code and data size. Note
6488 that these values will vary depending on the efficiency of the compiler and
6489 the compiler options used during generation.
6490
6491 Previous Release:
6492 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
6493 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
6494 Current Release:
6495 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
6496 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
6497
6498 2) iASL Compiler/Disassembler:
6499
6500 Fixed an array size problem for FreeBSD that would cause the compiler to
6501 fault.
6502
6503 ----------------------------------------
6504 20 February 2004. Summary of changes for version 20040220:
6505
6506
6507 1) ACPI CA Core Subsystem:
6508
6509 Implemented execution of _SxD methods for Device objects in the
6510 GetObjectInfo interface.
6511
6512 Fixed calls to _SST method to pass the correct arguments.
6513
6514 Added a call to _SST on wake to restore to "working" state.
6515
6516 Check for End-Of-Buffer failure case in the WalkResources interface.
6517
6518 Integrated fix for 64-bit alignment issue in acglobal.h by moving two
6519 structures to the beginning of the file.
6520
6521 After wake, clear GPE status register(s) before enabling GPEs.
6522
6523 After wake, clear/enable power button. (Perhaps we should clear/enable all
6524 fixed events upon wake.)
6525
6526 Fixed a couple of possible memory leaks in the Namespace manager.
6527
6528 Integrated latest acnetbsd.h file.
6529
6530 ----------------------------------------
6531 11 February 2004. Summary of changes for version 20040211:
6532
6533
6534 1) ACPI CA Core Subsystem:
6535
6536 Completed investigation and implementation of the call-by-reference
6537 mechanism for control method arguments.
6538
6539 Fixed a problem where a store of an object into an indexed package could
6540 fail if the store occurs within a different method than the method that
6541 created the package.
6542
6543 Fixed a problem where the ToDecimal operator could return incorrect results.
6544
6545 Fixed a problem where the CopyObject operator could fail on some of the more
6546 obscure objects (e.g., Reference objects.)
6547
6548 Improved the output of the Debug object to display buffer, package, and
6549 index objects.
6550
6551 Fixed a problem where constructs of the form "RefOf (ArgX)" did not return
6552 the expected result.
6553
6554 Added permanent ACPI_REPORT_ERROR macros for all instances of the
6555 ACPI_AML_INTERNAL exception.
6556
6557 Integrated latest version of acfreebsd.h
6558
6559 ----------------------------------------
6560 16 January 2004. Summary of changes for version 20040116:
6561
6562 The purpose of this release is primarily to update the copyright years in
6563 each module, thus causing a huge number of diffs. There are a few small
6564 functional changes, however.
6565
6566 1) ACPI CA Core Subsystem:
6567
6568 Improved error messages when there is a problem finding one or more of the
6569 required base ACPI tables
6570
6571 Reintroduced the definition of APIC_HEADER in actbl.h
6572
6573 Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h)
6574
6575 Removed extraneous reference to NewObj in dsmthdat.c
6576
6577 2) iASL compiler
6578
6579 Fixed a problem introduced in December that disabled the correct disassembly
6580 of Resource Templates
6581
6582
6583 ----------------------------------------
6584 03 December 2003. Summary of changes for version 20031203:
6585
6586 1) ACPI CA Core Subsystem:
6587
6588 Changed the initialization of Operation Regions during subsystem
6589 init to perform two entire walks of the ACPI namespace; The first
6590 to initialize the regions themselves, the second to execute the
6591 _REG methods. This fixed some interdependencies across _REG
6592 methods found on some machines.
6593
6594 Fixed a problem where a Store(Local0, Local1) could simply update
6595 the object reference count, and not create a new copy of the
6596 object if the Local1 is uninitialized.
6597
6598 Implemented support for the _SST reserved method during sleep
6599 transitions.
6600
6601 Implemented support to clear the SLP_TYP and SLP_EN bits when
6602 waking up, this is apparently required by some machines.
6603
6604 When sleeping, clear the wake status only if SleepState is not S5.
6605
6606 Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect
6607 pointer arithmetic advanced a string pointer too far.
6608
6609 Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer
6610 could be returned if the requested table has not been loaded.
6611
6612 Within the support for IRQ resources, restructured the handling of
6613 the active and edge/level bits.
6614
6615 Fixed a few problems in AcpiPsxExecute() where memory could be
6616 leaked under certain error conditions.
6617
6618 Improved error messages for the cases where the ACPI mode could
6619 not be entered.
6620
6621 Code and Data Size: Current and previous core subsystem library
6622 sizes are shown below. These are the code and data sizes for the
6623 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
6624 these values do not include any ACPI driver or OSPM code. The
6625 debug version of the code includes the debug output trace
6626 mechanism and has a much larger code and data size. Note that
6627 these values will vary depending on the efficiency of the compiler
6628 and the compiler options used during generation.
6629
6630 Previous Release (20031029):
6631 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
6632 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
6633 Current Release:
6634 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
6635 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
6636
6637 2) iASL Compiler/Disassembler:
6638
6639 Implemented a fix for the iASL disassembler where a bad index was
6640 generated. This was most noticeable on 64-bit platforms
6641
6642
6643 ----------------------------------------
6644 29 October 2003. Summary of changes for version 20031029:
6645
6646 1) ACPI CA Core Subsystem:
6647
6648
6649 Fixed a problem where a level-triggered GPE with an associated
6650 _Lxx control method was incorrectly cleared twice.
6651
6652 Fixed a problem with the Field support code where an access can
6653 occur beyond the end-of-region if the field is non-aligned but
6654 extends to the very end of the parent region (resulted in an
6655 AE_AML_REGION_LIMIT exception.)
6656
6657 Fixed a problem with ACPI Fixed Events where an RT Clock handler
6658 would not get invoked on an RTC event. The RTC event bitmasks for
6659 the PM1 registers were not being initialized properly.
6660
6661 Implemented support for executing _STA and _INI methods for
6662 Processor objects. Although this is currently not part of the
6663 ACPI specification, there is existing ASL code that depends on the
6664 init-time execution of these methods.
6665
6666 Implemented and deployed a GetDescriptorName function to decode
6667 the various types of internal descriptors. Guards against null
6668 descriptors during debug output also.
6669
6670 Implemented and deployed a GetNodeName function to extract the 4-
6671 character namespace node name. This function simplifies the debug
6672 and error output, as well as guarding against null pointers during
6673 output.
6674
6675 Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to
6676 simplify the debug and error output of 64-bit integers. This
6677 macro replaces the HIDWORD and LODWORD macros for dumping these
6678 integers.
6679
6680 Updated the implementation of the Stall() operator to only call
6681 AcpiOsStall(), and also return an error if the operand is larger
6682 than 255. This preserves the required behavior of not
6683 relinquishing the processor, as would happen if AcpiOsSleep() was
6684 called for "long stalls".
6685
6686 Constructs of the form "Store(LocalX,LocalX)" where LocalX is not
6687 initialized are now treated as NOOPs.
6688
6689 Cleaned up a handful of warnings during 64-bit generation.
6690
6691 Fixed a reported error where and incorrect GPE number was passed
6692 to the GPE dispatch handler. This value is only used for error
6693 output, however. Used this opportunity to clean up and streamline
6694 the GPE dispatch code.
6695
6696 Code and Data Size: Current and previous core subsystem library
6697 sizes are shown below. These are the code and data sizes for the
6698 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
6699 these values do not include any ACPI driver or OSPM code. The
6700
6701 debug version of the code includes the debug output trace
6702 mechanism and has a much larger code and data size. Note that
6703 these values will vary depending on the efficiency of the compiler
6704 and the compiler options used during generation.
6705
6706 Previous Release (20031002):
6707 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
6708 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
6709 Current Release:
6710 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
6711 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
6712
6713
6714 2) iASL Compiler/Disassembler:
6715
6716 Updated the iASL compiler to return an error if the operand to the
6717 Stall() operator is larger than 255.
6718
6719
6720 ----------------------------------------
6721 02 October 2003. Summary of changes for version 20031002:
6722
6723
6724 1) ACPI CA Core Subsystem:
6725
6726 Fixed a problem with Index Fields where the index was not
6727 incremented for fields that require multiple writes to the
6728 index/data registers (Fields that are wider than the data
6729 register.)
6730
6731 Fixed a problem with all Field objects where a write could go
6732 beyond the end-of-field if the field was larger than the access
6733 granularity and therefore required multiple writes to complete the
6734 request. An extra write beyond the end of the field could happen
6735 inadvertently.
6736
6737 Fixed a problem with Index Fields where a BUFFER_OVERFLOW error
6738 would incorrectly be returned if the width of the Data Register
6739 was larger than the specified field access width.
6740
6741 Completed fixes for LoadTable() and Unload() and verified their
6742 operation. Implemented full support for the "DdbHandle" object
6743 throughout the ACPI CA subsystem.
6744
6745 Implemented full support for the MADT and ECDT tables in the ACPI
6746 CA header files. Even though these tables are not directly
6747 consumed by ACPI CA, the header definitions are useful for ACPI
6748 device drivers.
6749
6750 Integrated resource descriptor fixes posted to the Linux ACPI
6751 list. This included checks for minimum descriptor length, and
6752 support for trailing NULL strings within descriptors that have
6753 optional string elements.
6754
6755 Code and Data Size: Current and previous core subsystem library
6756 sizes are shown below. These are the code and data sizes for the
6757 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
6758 these values do not include any ACPI driver or OSPM code. The
6759 debug version of the code includes the debug output trace
6760 mechanism and has a much larger code and data size. Note that
6761 these values will vary depending on the efficiency of the compiler
6762 and the compiler options used during generation.
6763
6764 Previous Release (20030918):
6765 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
6766 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
6767 Current Release:
6768 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
6769 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
6770
6771
6772 2) iASL Compiler:
6773
6774 Implemented detection of non-ASCII characters within the input
6775 source ASL file. This catches attempts to compile binary (AML)
6776 files early in the compile, with an informative error message.
6777
6778 Fixed a problem where the disassembler would fault if the output
6779 filename could not be generated or if the output file could not be
6780 opened.
6781
6782 ----------------------------------------
6783 18 September 2003. Summary of changes for version 20030918:
6784
6785
6786 1) ACPI CA Core Subsystem:
6787
6788 Found and fixed a longstanding problem with the late execution of
6789 the various deferred AML opcodes (such as Operation Regions,
6790 Buffer Fields, Buffers, and Packages). If the name string
6791 specified for the name of the new object placed the object in a
6792 scope other than the current scope, the initialization/execution
6793 of the opcode failed. The solution to this problem was to
6794 implement a mechanism where the late execution of such opcodes
6795 does not attempt to lookup/create the name a second time in an
6796 incorrect scope. This fixes the "region size computed
6797 incorrectly" problem.
6798
6799 Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a
6800 Global Lock AE_BAD_PARAMETER error.
6801
6802 Fixed several 64-bit issues with prototypes, casting and data
6803 types.
6804
6805 Removed duplicate prototype from acdisasm.h
6806
6807 Fixed an issue involving EC Operation Region Detach (Shaohua Li)
6808
6809 Code and Data Size: Current and previous core subsystem library
6810 sizes are shown below. These are the code and data sizes for the
6811 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
6812 these values do not include any ACPI driver or OSPM code. The
6813 debug version of the code includes the debug output trace
6814 mechanism and has a much larger code and data size. Note that
6815 these values will vary depending on the efficiency of the compiler
6816 and the compiler options used during generation.
6817
6818 Previous Release:
6819
6820 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
6821 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
6822 Current Release:
6823 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
6824 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
6825
6826
6827 2) Linux:
6828
6829 Fixed the AcpiOsSleep implementation in osunixxf.c to pass the
6830 correct sleep time in seconds.
6831
6832 ----------------------------------------
6833 14 July 2003. Summary of changes for version 20030619:
6834
6835 1) ACPI CA Core Subsystem:
6836
6837 Parse SSDTs in order discovered, as opposed to reverse order
6838 (Hrvoje Habjanic)
6839
6840 Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas
6841 Klausner,
6842 Nate Lawson)
6843
6844
6845 2) Linux:
6846
6847 Dynamically allocate SDT list (suggested by Andi Kleen)
6848
6849 proc function return value cleanups (Andi Kleen)
6850
6851 Correctly handle NMI watchdog during long stalls (Andrew Morton)
6852
6853 Make it so acpismp=force works (reported by Andrew Morton)
6854
6855
6856 ----------------------------------------
6857 19 June 2003. Summary of changes for version 20030619:
6858
6859 1) ACPI CA Core Subsystem:
6860
6861 Fix To/FromBCD, eliminating the need for an arch-specific #define.
6862
6863 Do not acquire a semaphore in the S5 shutdown path.
6864
6865 Fix ex_digits_needed for 0. (Takayoshi Kochi)
6866
6867 Fix sleep/stall code reversal. (Andi Kleen)
6868
6869 Revert a change having to do with control method calling
6870 semantics.
6871
6872 2) Linux:
6873
6874 acpiphp update (Takayoshi Kochi)
6875
6876 Export acpi_disabled for sonypi (Stelian Pop)
6877
6878 Mention acpismp=force in config help
6879
6880 Re-add acpitable.c and acpismp=force. This improves backwards
6881
6882 compatibility and also cleans up the code to a significant degree.
6883
6884 Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge)
6885
6886 ----------------------------------------
6887 22 May 2003. Summary of changes for version 20030522:
6888
6889 1) ACPI CA Core Subsystem:
6890
6891 Found and fixed a reported problem where an AE_NOT_FOUND error
6892 occurred occasionally during _BST evaluation. This turned out to
6893 be an Owner ID allocation issue where a called method did not get
6894 a new ID assigned to it. Eventually, (after 64k calls), the Owner
6895 ID UINT16 would wraparound so that the ID would be the same as the
6896 caller's and the called method would delete the caller's
6897 namespace.
6898
6899 Implemented extended error reporting for control methods that are
6900 aborted due to a run-time exception. Output includes the exact
6901 AML instruction that caused the method abort, a dump of the method
6902 locals and arguments at the time of the abort, and a trace of all
6903 nested control method calls.
6904
6905 Modified the interpreter to allow the creation of buffers of zero
6906 length from the AML code. Implemented new code to ensure that no
6907 attempt is made to actually allocate a memory buffer (of length
6908 zero) - instead, a simple buffer object with a NULL buffer pointer
6909 and length zero is created. A warning is no longer issued when
6910 the AML attempts to create a zero-length buffer.
6911
6912 Implemented a workaround for the "leading asterisk issue" in
6913 _HIDs, _UIDs, and _CIDs in the AML interpreter. One leading
6914 asterisk is automatically removed if present in any HID, UID, or
6915 CID strings. The iASL compiler will still flag this asterisk as
6916 an error, however.
6917
6918 Implemented full support for _CID methods that return a package of
6919 multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface
6920 now additionally returns a device _CID list if present. This
6921 required a change to the external interface in order to pass an
6922 ACPI_BUFFER object as a parameter since the _CID list is of
6923 variable length.
6924
6925 Fixed a problem with the new AE_SAME_HANDLER exception where
6926 handler initialization code did not know about this exception.
6927
6928 Code and Data Size: Current and previous core subsystem library
6929 sizes are shown below. These are the code and data sizes for the
6930 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
6931 these values do not include any ACPI driver or OSPM code. The
6932 debug version of the code includes the debug output trace
6933 mechanism and has a much larger code and data size. Note that
6934 these values will vary depending on the efficiency of the compiler
6935 and the compiler options used during generation.
6936
6937 Previous Release (20030509):
6938 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
6939 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
6940 Current Release:
6941 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
6942 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
6943
6944
6945 2) Linux:
6946
6947 Fixed a bug in which we would reinitialize the ACPI interrupt
6948 after it was already working, thus disabling all ACPI and the IRQs
6949 for any other device sharing the interrupt. (Thanks to Stian
6950 Jordet)
6951
6952 Toshiba driver update (John Belmonte)
6953
6954 Return only 0 or 1 for our interrupt handler status (Andrew
6955 Morton)
6956
6957
6958 3) iASL Compiler:
6959
6960 Fixed a reported problem where multiple (nested) ElseIf()
6961 statements were not handled correctly by the compiler, resulting
6962 in incorrect warnings and incorrect AML code. This was a problem
6963 in both the ASL parser and the code generator.
6964
6965
6966 4) Documentation:
6967
6968 Added changes to existing interfaces, new exception codes, and new
6969 text concerning reference count object management versus garbage
6970 collection.
6971
6972 ----------------------------------------
6973 09 May 2003. Summary of changes for version 20030509.
6974
6975
6976 1) ACPI CA Core Subsystem:
6977
6978 Changed the subsystem initialization sequence to hold off
6979 installation of address space handlers until the hardware has been
6980 initialized and the system has entered ACPI mode. This is because
6981 the installation of space handlers can cause _REG methods to be
6982 run. Previously, the _REG methods could potentially be run before
6983 ACPI mode was enabled.
6984
6985 Fixed some memory leak issues related to address space handler and
6986 notify handler installation. There were some problems with the
6987 reference count mechanism caused by the fact that the handler
6988 objects are shared across several namespace objects.
6989
6990 Fixed a reported problem where reference counts within the
6991 namespace were not properly updated when named objects created by
6992 method execution were deleted.
6993
6994 Fixed a reported problem where multiple SSDTs caused a deletion
6995 issue during subsystem termination. Restructured the table data
6996 structures to simplify the linked lists and the related code.
6997
6998 Fixed a problem where the table ID associated with secondary
6999 tables (SSDTs) was not being propagated into the namespace objects
7000 created by those tables. This would only present a problem for
7001 tables that are unloaded at run-time, however.
7002
7003 Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE
7004 type as the length parameter (instead of UINT32).
7005
7006 Solved a long-standing problem where an ALREADY_EXISTS error
7007 appears on various systems. This problem could happen when there
7008 are multiple PCI_Config operation regions under a single PCI root
7009 bus. This doesn't happen very frequently, but there are some
7010 systems that do this in the ASL.
7011
7012 Fixed a reported problem where the internal DeleteNode function
7013 was incorrectly handling the case where a namespace node was the
7014 first in the parent's child list, and had additional peers (not
7015 the only child, but first in the list of children.)
7016
7017 Code and Data Size: Current core subsystem library sizes are shown
7018 below. These are the code and data sizes for the acpica.lib
7019 produced by the Microsoft Visual C++ 6.0 compiler, and these
7020 values do not include any ACPI driver or OSPM code. The debug
7021 version of the code includes the debug output trace mechanism and
7022 has a much larger code and data size. Note that these values will
7023 vary depending on the efficiency of the compiler and the compiler
7024 options used during generation.
7025
7026 Previous Release
7027 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
7028 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
7029 Current Release:
7030 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
7031 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
7032
7033
7034 2) Linux:
7035
7036 Allow ":" in OS override string (Ducrot Bruno)
7037
7038 Kobject fix (Greg KH)
7039
7040
7041 3 iASL Compiler/Disassembler:
7042
7043 Fixed a problem in the generation of the C source code files (AML
7044 is emitted in C source statements for BIOS inclusion) where the
7045 Ascii dump that appears within a C comment at the end of each line
7046 could cause a compile time error if the AML sequence happens to
7047 have an open comment or close comment sequence embedded.
7048
7049
7050 ----------------------------------------
7051 24 April 2003. Summary of changes for version 20030424.
7052
7053
7054 1) ACPI CA Core Subsystem:
7055
7056 Support for big-endian systems has been implemented. Most of the
7057 support has been invisibly added behind big-endian versions of the
7058 ACPI_MOVE_* macros.
7059
7060 Fixed a problem in AcpiHwDisableGpeBlock() and
7061 AcpiHwClearGpeBlock() where an incorrect offset was passed to the
7062 low level hardware write routine. The offset parameter was
7063 actually eliminated from the low level read/write routines because
7064 they had become obsolete.
7065
7066 Fixed a problem where a handler object was deleted twice during
7067 the removal of a fixed event handler.
7068
7069
7070 2) Linux:
7071
7072 A fix for SMP systems with link devices was contributed by
7073
7074 Compaq's Dan Zink.
7075
7076 (2.5) Return whether we handled the interrupt in our IRQ handler.
7077 (Linux ISRs no longer return void, so we can propagate the handler
7078 return value from the ACPI CA core back to the OS.)
7079
7080
7081
7082 3) Documentation:
7083
7084 The ACPI CA Programmer Reference has been updated to reflect new
7085 interfaces and changes to existing interfaces.
7086
7087 ----------------------------------------
7088 28 March 2003. Summary of changes for version 20030328.
7089
7090 1) ACPI CA Core Subsystem:
7091
7092 The GPE Block Device support has been completed. New interfaces
7093 are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event
7094 interfaces (enable, disable, clear, getstatus) have been split
7095 into separate interfaces for Fixed Events and General Purpose
7096 Events (GPEs) in order to support GPE Block Devices properly.
7097
7098 Fixed a problem where the error message "Failed to acquire
7099 semaphore" would appear during operations on the embedded
7100 controller (EC).
7101
7102 Code and Data Size: Current core subsystem library sizes are shown
7103 below. These are the code and data sizes for the acpica.lib
7104 produced by the Microsoft Visual C++ 6.0 compiler, and these
7105 values do not include any ACPI driver or OSPM code. The debug
7106 version of the code includes the debug output trace mechanism and
7107 has a much larger code and data size. Note that these values will
7108 vary depending on the efficiency of the compiler and the compiler
7109 options used during generation.
7110
7111 Previous Release
7112 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
7113 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
7114 Current Release:
7115 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
7116 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
7117
7118
7119 ----------------------------------------
7120 28 February 2003. Summary of changes for version 20030228.
7121
7122
7123 1) ACPI CA Core Subsystem:
7124
7125 The GPE handling and dispatch code has been completely overhauled
7126 in preparation for support of GPE Block Devices (ID ACPI0006).
7127 This affects internal data structures and code only; there should
7128 be no differences visible externally. One new file has been
7129 added, evgpeblk.c
7130
7131 The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only
7132 fields that are used to determine the GPE block lengths. The
7133 REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address
7134 structures are ignored. This is per the ACPI specification but it
7135 isn't very clear. The full 256 Block 0/1 GPEs are now supported
7136 (the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128).
7137
7138 In the SCI interrupt handler, removed the read of the PM1_CONTROL
7139 register to look at the SCI_EN bit. On some machines, this read
7140 causes an SMI event and greatly slows down SCI events. (This may
7141 in fact be the cause of slow battery status response on some
7142 systems.)
7143
7144 Fixed a problem where a store of a NULL string to a package object
7145 could cause the premature deletion of the object. This was seen
7146 during execution of the battery _BIF method on some systems,
7147 resulting in no battery data being returned.
7148
7149 Added AcpiWalkResources interface to simplify parsing of resource
7150 lists.
7151
7152 Code and Data Size: Current core subsystem library sizes are shown
7153 below. These are the code and data sizes for the acpica.lib
7154 produced by the Microsoft Visual C++ 6.0 compiler, and these
7155 values do not include any ACPI driver or OSPM code. The debug
7156 version of the code includes the debug output trace mechanism and
7157 has a much larger code and data size. Note that these values will
7158 vary depending on the efficiency of the compiler and the compiler
7159 options used during generation.
7160
7161 Previous Release
7162 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
7163 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
7164 Current Release:
7165 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
7166 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
7167
7168
7169 2) Linux
7170
7171 S3 fixes (Ole Rohne)
7172
7173 Update ACPI PHP driver with to use new acpi_walk_resource API
7174 (Bjorn Helgaas)
7175
7176 Add S4BIOS support (Pavel Machek)
7177
7178 Map in entire table before performing checksum (John Stultz)
7179
7180 Expand the mem= cmdline to allow the specification of reserved and
7181 ACPI DATA blocks (Pavel Machek)
7182
7183 Never use ACPI on VISWS
7184
7185 Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez)
7186
7187 Revert a change that allowed P_BLK lengths to be 4 or 5. This is
7188 causing us to think that some systems support C2 when they really
7189 don't.
7190
7191 Do not count processor objects for non-present CPUs (Thanks to
7192 Dominik Brodowski)
7193
7194
7195 3) iASL Compiler:
7196
7197 Fixed a problem where ASL include files could not be found and
7198 opened.
7199
7200 Added support for the _PDC reserved name.
7201
7202
7203 ----------------------------------------
7204 22 January 2003. Summary of changes for version 20030122.
7205
7206
7207 1) ACPI CA Core Subsystem:
7208
7209 Added a check for constructs of the form: Store (Local0, Local0)
7210 where Local0 is not initialized. Apparently, some BIOS
7211 programmers believe that this is a NOOP. Since this store doesn't
7212 do anything anyway, the new prototype behavior will ignore this
7213 error. This is a case where we can relax the strict checking in
7214 the interpreter in the name of compatibility.
7215
7216
7217 2) Linux
7218
7219 The AcpiSrc Source Conversion Utility has been released with the
7220 Linux package for the first time. This is the utility that is
7221 used to convert the ACPI CA base source code to the Linux version.
7222
7223 (Both) Handle P_BLK lengths shorter than 6 more gracefully
7224
7225 (Both) Move more headers to include/acpi, and delete an unused
7226 header.
7227
7228 (Both) Move drivers/acpi/include directory to include/acpi
7229
7230 (Both) Boot functions don't use cmdline, so don't pass it around
7231
7232 (Both) Remove include of unused header (Adrian Bunk)
7233
7234 (Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since
7235 the
7236 former now also includes the latter, acpiphp.h only needs the one,
7237 now.
7238
7239 (2.5) Make it possible to select method of bios restoring after S3
7240 resume. [=> no more ugly ifdefs] (Pavel Machek)
7241
7242 (2.5) Make proc write interfaces work (Pavel Machek)
7243
7244 (2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski)
7245
7246 (2.5) Break out ACPI Perf code into its own module, under cpufreq
7247 (Dominik Brodowski)
7248
7249 (2.4) S4BIOS support (Ducrot Bruno)
7250
7251 (2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio
7252 Visinoni)
7253
7254
7255 3) iASL Compiler:
7256
7257 Added support to disassemble SSDT and PSDTs.
7258
7259 Implemented support to obtain SSDTs from the Windows registry if
7260 available.
7261
7262
7263 ----------------------------------------
7264 09 January 2003. Summary of changes for version 20030109.
7265
7266 1) ACPI CA Core Subsystem:
7267
7268 Changed the behavior of the internal Buffer-to-String conversion
7269 function. The current ACPI specification states that the contents
7270 of the buffer are "converted to a string of two-character
7271 hexadecimal numbers, each separated by a space". Unfortunately,
7272 this definition is not backwards compatible with existing ACPI 1.0
7273 implementations (although the behavior was not defined in the ACPI
7274 1.0 specification). The new behavior simply copies data from the
7275 buffer to the string until a null character is found or the end of
7276 the buffer is reached. The new String object is always null
7277 terminated. This problem was seen during the generation of _BIF
7278 battery data where incorrect strings were returned for battery
7279 type, etc. This will also require an errata to the ACPI
7280 specification.
7281
7282 Renamed all instances of NATIVE_UINT and NATIVE_INT to
7283 ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively.
7284
7285 Copyright in all module headers (both Linux and non-Linux) has be
7286 updated to 2003.
7287
7288 Code and Data Size: Current core subsystem library sizes are shown
7289 below. These are the code and data sizes for the acpica.lib
7290 produced by the Microsoft Visual C++ 6.0 compiler, and these
7291 values do not include any ACPI driver or OSPM code. The debug
7292 version of the code includes the debug output trace mechanism and
7293 has a much larger code and data size. Note that these values will
7294 vary depending on the efficiency of the compiler and the compiler
7295 options used during generation.
7296
7297 Previous Release
7298 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
7299 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
7300 Current Release:
7301 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
7302 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
7303
7304
7305 2) Linux
7306
7307 Fixed an oops on module insertion/removal (Matthew Tippett)
7308
7309 (2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante)
7310
7311 (2.5) Replace pr_debug (Randy Dunlap)
7312
7313 (2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski)
7314
7315 (Both) Eliminate spawning of thread from timer callback, in favor
7316 of schedule_work()
7317
7318 (Both) Show Lid status in /proc (Zdenek OGAR Skalak)
7319
7320 (Both) Added define for Fixed Function HW region (Matthew Wilcox)
7321
7322 (Both) Add missing statics to button.c (Pavel Machek)
7323
7324 Several changes have been made to the source code translation
7325 utility that generates the Linux Code in order to make the code
7326 more "Linux-like":
7327
7328 All typedefs on structs and unions have been removed in keeping
7329 with the Linux coding style.
7330
7331 Removed the non-Linux SourceSafe module revision number from each
7332 module header.
7333
7334 Completed major overhaul of symbols to be lowercased for linux.
7335 Doubled the number of symbols that are lowercased.
7336
7337 Fixed a problem where identifiers within procedure headers and
7338 within quotes were not fully lower cased (they were left with a
7339 starting capital.)
7340
7341 Some C macros whose only purpose is to allow the generation of 16-
7342 bit code are now completely removed in the Linux code, increasing
7343 readability and maintainability.
7344
7345 ----------------------------------------
7346
7347 12 December 2002. Summary of changes for version 20021212.
7348
7349
7350 1) ACPI CA Core Subsystem:
7351
7352 Fixed a problem where the creation of a zero-length AML Buffer
7353 would cause a fault.
7354
7355 Fixed a problem where a Buffer object that pointed to a static AML
7356 buffer (in an ACPI table) could inadvertently be deleted, causing
7357 memory corruption.
7358
7359 Fixed a problem where a user buffer (passed in to the external
7360 ACPI CA interfaces) could be overwritten if the buffer was too
7361 small to complete the operation, causing memory corruption.
7362
7363 Fixed a problem in the Buffer-to-String conversion code where a
7364 string of length one was always returned, regardless of the size
7365 of the input Buffer object.
7366
7367 Removed the NATIVE_CHAR data type across the entire source due to
7368 lack of need and lack of consistent use.
7369
7370 Code and Data Size: Current core subsystem library sizes are shown
7371 below. These are the code and data sizes for the acpica.lib
7372 produced by the Microsoft Visual C++ 6.0 compiler, and these
7373 values do not include any ACPI driver or OSPM code. The debug
7374 version of the code includes the debug output trace mechanism and
7375 has a much larger code and data size. Note that these values will
7376 vary depending on the efficiency of the compiler and the compiler
7377 options used during generation.
7378
7379 Previous Release
7380 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
7381 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
7382 Current Release:
7383 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
7384 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
7385
7386
7387 ----------------------------------------
7388 05 December 2002. Summary of changes for version 20021205.
7389
7390 1) ACPI CA Core Subsystem:
7391
7392 Fixed a problem where a store to a String or Buffer object could
7393 cause corruption of the DSDT if the object type being stored was
7394 the same as the target object type and the length of the object
7395 being stored was equal to or smaller than the original (existing)
7396 target object. This was seen to cause corruption of battery _BIF
7397 buffers if the _BIF method modified the buffer on the fly.
7398
7399 Fixed a problem where an internal error was generated if a control
7400 method invocation was used in an OperationRegion, Buffer, or
7401 Package declaration. This was caused by the deferred parsing of
7402 the control method and thus the deferred creation of the internal
7403 method object. The solution to this problem was to create the
7404 internal method object at the moment the method is encountered in
7405 the first pass - so that subsequent references to the method will
7406 able to obtain the required parameter count and thus properly
7407 parse the method invocation. This problem presented itself as an
7408 AE_AML_INTERNAL during the pass 1 parse phase during table load.
7409
7410 Fixed a problem where the internal String object copy routine did
7411 not always allocate sufficient memory for the target String object
7412 and caused memory corruption. This problem was seen to cause
7413 "Allocation already present in list!" errors as memory allocation
7414 became corrupted.
7415
7416 Implemented a new function for the evaluation of namespace objects
7417 that allows the specification of the allowable return object
7418 types. This simplifies a lot of code that checks for a return
7419 object of one or more specific objects returned from the
7420 evaluation (such as _STA, etc.) This may become and external
7421 function if it would be useful to ACPI-related drivers.
7422
7423 Completed another round of prefixing #defines with "ACPI_" for
7424 clarity.
7425
7426 Completed additional code restructuring to allow more modular
7427 linking for iASL compiler and AcpiExec. Several files were split
7428 creating new files. New files: nsparse.c dsinit.c evgpe.c
7429
7430 Implemented an abort mechanism to terminate an executing control
7431 method via the AML debugger. This feature is useful for debugging
7432 control methods that depend (wait) for specific hardware
7433 responses.
7434
7435 Code and Data Size: Current core subsystem library sizes are shown
7436 below. These are the code and data sizes for the acpica.lib
7437 produced by the Microsoft Visual C++ 6.0 compiler, and these
7438 values do not include any ACPI driver or OSPM code. The debug
7439 version of the code includes the debug output trace mechanism and
7440 has a much larger code and data size. Note that these values will
7441 vary depending on the efficiency of the compiler and the compiler
7442 options used during generation.
7443
7444 Previous Release
7445 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
7446 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
7447 Current Release:
7448 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
7449 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
7450
7451
7452 2) iASL Compiler/Disassembler
7453
7454 Fixed a compiler code generation problem for "Interrupt" Resource
7455 Descriptors. If specified in the ASL, the optional "Resource
7456 Source Index" and "Resource Source" fields were not inserted into
7457 the correct location within the AML resource descriptor, creating
7458 an invalid descriptor.
7459
7460 Fixed a disassembler problem for "Interrupt" resource descriptors.
7461 The optional "Resource Source Index" and "Resource Source" fields
7462 were ignored.
7463
7464
7465 ----------------------------------------
7466 22 November 2002. Summary of changes for version 20021122.
7467
7468
7469 1) ACPI CA Core Subsystem:
7470
7471 Fixed a reported problem where an object stored to a Method Local
7472 or Arg was not copied to a new object during the store - the
7473 object pointer was simply copied to the Local/Arg. This caused
7474 all subsequent operations on the Local/Arg to also affect the
7475 original source of the store operation.
7476
7477 Fixed a problem where a store operation to a Method Local or Arg
7478 was not completed properly if the Local/Arg contained a reference
7479 (from RefOf) to a named field. The general-purpose store-to-
7480 namespace-node code is now used so that this case is handled
7481 automatically.
7482
7483 Fixed a problem where the internal object copy routine would cause
7484 a protection fault if the object being copied was a Package and
7485 contained either 1) a NULL package element or 2) a nested sub-
7486 package.
7487
7488 Fixed a problem with the GPE initialization that resulted from an
7489 ambiguity in the ACPI specification. One section of the
7490 specification states that both the address and length of the GPE
7491 block must be zero if the block is not supported. Another section
7492 implies that only the address need be zero if the block is not
7493 supported. The code has been changed so that both the address and
7494 the length must be non-zero to indicate a valid GPE block (i.e.,
7495 if either the address or the length is zero, the GPE block is
7496 invalid.)
7497
7498 Code and Data Size: Current core subsystem library sizes are shown
7499 below. These are the code and data sizes for the acpica.lib
7500 produced by the Microsoft Visual C++ 6.0 compiler, and these
7501 values do not include any ACPI driver or OSPM code. The debug
7502 version of the code includes the debug output trace mechanism and
7503 has a much larger code and data size. Note that these values will
7504 vary depending on the efficiency of the compiler and the compiler
7505 options used during generation.
7506
7507 Previous Release
7508 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
7509 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
7510 Current Release:
7511 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
7512 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
7513
7514
7515 2) Linux
7516
7517 Cleaned up EC driver. Exported an external EC read/write
7518 interface. By going through this, other drivers (most notably
7519 sonypi) will be able to serialize access to the EC.
7520
7521
7522 3) iASL Compiler/Disassembler
7523
7524 Implemented support to optionally generate include files for both
7525 ASM and C (the -i switch). This simplifies BIOS development by
7526 automatically creating include files that contain external
7527 declarations for the symbols that are created within the
7528
7529 (optionally generated) ASM and C AML source files.
7530
7531
7532 ----------------------------------------
7533 15 November 2002. Summary of changes for version 20021115.
7534
7535 1) ACPI CA Core Subsystem:
7536
7537 Fixed a memory leak problem where an error during resolution of
7538
7539 method arguments during a method invocation from another method
7540 failed to cleanup properly by deleting all successfully resolved
7541 argument objects.
7542
7543 Fixed a problem where the target of the Index() operator was not
7544 correctly constructed if the source object was a package. This
7545 problem has not been detected because the use of a target operand
7546 with Index() is very rare.
7547
7548 Fixed a problem with the Index() operator where an attempt was
7549 made to delete the operand objects twice.
7550
7551 Fixed a problem where an attempt was made to delete an operand
7552 twice during execution of the CondRefOf() operator if the target
7553 did not exist.
7554
7555 Implemented the first of perhaps several internal create object
7556 functions that create and initialize a specific object type. This
7557 consolidates duplicated code wherever the object is created, thus
7558 shrinking the size of the subsystem.
7559
7560 Implemented improved debug/error messages for errors that occur
7561 during nested method invocations. All executing method pathnames
7562 are displayed (with the error) as the call stack is unwound - thus
7563 simplifying debug.
7564
7565 Fixed a problem introduced in the 10/02 release that caused
7566 premature deletion of a buffer object if a buffer was used as an
7567 ASL operand where an integer operand is required (Thus causing an
7568 implicit object conversion from Buffer to Integer.) The change in
7569 the 10/02 release was attempting to fix a memory leak (albeit
7570 incorrectly.)
7571
7572 Code and Data Size: Current core subsystem library sizes are shown
7573 below. These are the code and data sizes for the acpica.lib
7574 produced by the Microsoft Visual C++ 6.0 compiler, and these
7575 values do not include any ACPI driver or OSPM code. The debug
7576 version of the code includes the debug output trace mechanism and
7577 has a much larger code and data size. Note that these values will
7578 vary depending on the efficiency of the compiler and the compiler
7579 options used during generation.
7580
7581 Previous Release
7582 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
7583 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
7584 Current Release:
7585 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
7586 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
7587
7588
7589 2) Linux
7590
7591 Changed the implementation of the ACPI semaphores to use down()
7592 instead of down_interruptable(). It is important that the
7593 execution of ACPI control methods not be interrupted by signals.
7594 Methods must run to completion, or the system may be left in an
7595 unknown/unstable state.
7596
7597 Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set.
7598 (Shawn Starr)
7599
7600
7601 3) iASL Compiler/Disassembler
7602
7603
7604 Changed the default location of output files. All output files
7605 are now placed in the current directory by default instead of in
7606 the directory of the source file. This change may affect some
7607 existing makefiles, but it brings the behavior of the compiler in
7608 line with other similar tools. The location of the output files
7609 can be overridden with the -p command line switch.
7610
7611
7612 ----------------------------------------
7613 11 November 2002. Summary of changes for version 20021111.
7614
7615
7616 0) ACPI Specification 2.0B is released and is now available at:
7617 http://www.acpi.info/index.html
7618
7619
7620 1) ACPI CA Core Subsystem:
7621
7622 Implemented support for the ACPI 2.0 SMBus Operation Regions.
7623 This includes the early detection and handoff of the request to
7624 the SMBus region handler (avoiding all of the complex field
7625 support code), and support for the bidirectional return packet
7626 from an SMBus write operation. This paves the way for the
7627 development of SMBus drivers in each host operating system.
7628
7629 Fixed a problem where the semaphore WAIT_FOREVER constant was
7630 defined as 32 bits, but must be 16 bits according to the ACPI
7631 specification. This had the side effect of causing ASL
7632 Mutex/Event timeouts even though the ASL code requested a wait
7633 forever. Changed all internal references to the ACPI timeout
7634 parameter to 16 bits to prevent future problems. Changed the name
7635 of WAIT_FOREVER to ACPI_WAIT_FOREVER.
7636
7637 Code and Data Size: Current core subsystem library sizes are shown
7638 below. These are the code and data sizes for the acpica.lib
7639 produced by the Microsoft Visual C++ 6.0 compiler, and these
7640 values do not include any ACPI driver or OSPM code. The debug
7641 version of the code includes the debug output trace mechanism and
7642 has a much larger code and data size. Note that these values will
7643 vary depending on the efficiency of the compiler and the compiler
7644 options used during generation.
7645
7646 Previous Release
7647 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
7648 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
7649 Current Release:
7650 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
7651 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
7652
7653
7654 2) Linux
7655
7656 Module loading/unloading fixes (John Cagle)
7657
7658
7659 3) iASL Compiler/Disassembler
7660
7661 Added support for the SMBBlockProcessCall keyword (ACPI 2.0)
7662
7663 Implemented support for the disassembly of all SMBus protocol
7664 keywords (SMBQuick, SMBWord, etc.)
7665
7666 ----------------------------------------
7667 01 November 2002. Summary of changes for version 20021101.
7668
7669
7670 1) ACPI CA Core Subsystem:
7671
7672 Fixed a problem where platforms that have a GPE1 block but no GPE0
7673 block were not handled correctly. This resulted in a "GPE
7674 overlap" error message. GPE0 is no longer required.
7675
7676 Removed code added in the previous release that inserted nodes
7677 into the namespace in alphabetical order. This caused some side-
7678 effects on various machines. The root cause of the problem is
7679 still under investigation since in theory, the internal ordering
7680 of the namespace nodes should not matter.
7681
7682
7683 Enhanced error reporting for the case where a named object is not
7684 found during control method execution. The full ACPI namepath
7685 (name reference) of the object that was not found is displayed in
7686 this case.
7687
7688 Note: as a result of the overhaul of the namespace object types in
7689 the previous release, the namespace nodes for the predefined
7690 scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE
7691 instead of ACPI_TYPE_ANY. This simplifies the namespace
7692 management code but may affect code that walks the namespace tree
7693 looking for specific object types.
7694
7695 Code and Data Size: Current core subsystem library sizes are shown
7696 below. These are the code and data sizes for the acpica.lib
7697 produced by the Microsoft Visual C++ 6.0 compiler, and these
7698 values do not include any ACPI driver or OSPM code. The debug
7699 version of the code includes the debug output trace mechanism and
7700 has a much larger code and data size. Note that these values will
7701 vary depending on the efficiency of the compiler and the compiler
7702 options used during generation.
7703
7704 Previous Release
7705 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
7706 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
7707 Current Release:
7708 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
7709 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
7710
7711
7712 2) Linux
7713
7714 Fixed a problem introduced in the previous release where the
7715 Processor and Thermal objects were not recognized and installed in
7716 /proc. This was related to the scope type change described above.
7717
7718
7719 3) iASL Compiler/Disassembler
7720
7721 Implemented the -g option to get all of the required ACPI tables
7722 from the registry and save them to files (Windows version of the
7723 compiler only.) The required tables are the FADT, FACS, and DSDT.
7724
7725 Added ACPI table checksum validation during table disassembly in
7726 order to catch corrupted tables.
7727
7728
7729 ----------------------------------------
7730 22 October 2002. Summary of changes for version 20021022.
7731
7732 1) ACPI CA Core Subsystem:
7733
7734 Implemented a restriction on the Scope operator that the target
7735 must already exist in the namespace at the time the operator is
7736 encountered (during table load or method execution). In other
7737 words, forward references are not allowed and Scope() cannot
7738 create a new object. This changes the previous behavior where the
7739 interpreter would create the name if not found. This new behavior
7740 correctly enables the search-to-root algorithm during namespace
7741 lookup of the target name. Because of this upsearch, this fixes
7742 the known Compaq _SB_.OKEC problem and makes both the AML
7743 interpreter and iASL compiler compatible with other ACPI
7744 implementations.
7745
7746 Completed a major overhaul of the internal ACPI object types for
7747 the ACPI Namespace and the associated operand objects. Many of
7748 these types had become obsolete with the introduction of the two-
7749 pass namespace load. This cleanup simplifies the code and makes
7750 the entire namespace load mechanism much clearer and easier to
7751 understand.
7752
7753 Improved debug output for tracking scope opening/closing to help
7754 diagnose scoping issues. The old scope name as well as the new
7755 scope name are displayed. Also improved error messages for
7756 problems with ASL Mutex objects and error messages for GPE
7757 problems.
7758
7759 Cleaned up the namespace dump code, removed obsolete code.
7760
7761 All string output (for all namespace/object dumps) now uses the
7762 common ACPI string output procedure which handles escapes properly
7763 and does not emit non-printable characters.
7764
7765 Fixed some issues with constants in the 64-bit version of the
7766 local C library (utclib.c)
7767
7768
7769 2) Linux
7770
7771 EC Driver: No longer attempts to acquire the Global Lock at
7772 interrupt level.
7773
7774
7775 3) iASL Compiler/Disassembler
7776
7777 Implemented ACPI 2.0B grammar change that disallows all Type 1 and
7778 2 opcodes outside of a control method. This means that the
7779 "executable" operators (versus the "namespace" operators) cannot
7780 be used at the table level; they can only be used within a control
7781 method.
7782
7783 Implemented the restriction on the Scope() operator where the
7784 target must already exist in the namespace at the time the
7785 operator is encountered (during ASL compilation). In other words,
7786 forward references are not allowed and Scope() cannot create a new
7787 object. This makes the iASL compiler compatible with other ACPI
7788 implementations and makes the Scope() implementation adhere to the
7789 ACPI specification.
7790
7791 Fixed a problem where namepath optimization for the Alias operator
7792 was optimizing the wrong path (of the two namepaths.) This caused
7793 a "Missing alias link" error message.
7794
7795 Fixed a problem where an "unknown reserved name" warning could be
7796 incorrectly generated for names like "_SB" when the trailing
7797 underscore is not used in the original ASL.
7798
7799 Fixed a problem where the reserved name check did not handle
7800 NamePaths with multiple NameSegs correctly. The first nameseg of
7801 the NamePath was examined instead of the last NameSeg.
7802
7803
7804 ----------------------------------------
7805
7806 02 October 2002. Summary of changes for this release.
7807
7808
7809 1) ACPI CA Core Subsystem version 20021002:
7810
7811 Fixed a problem where a store/copy of a string to an existing
7812 string did not always set the string length properly in the String
7813 object.
7814
7815 Fixed a reported problem with the ToString operator where the
7816 behavior was identical to the ToHexString operator instead of just
7817 simply converting a raw buffer to a string data type.
7818
7819 Fixed a problem where CopyObject and the other "explicit"
7820 conversion operators were not updating the internal namespace node
7821 type as part of the store operation.
7822
7823 Fixed a memory leak during implicit source operand conversion
7824 where the original object was not deleted if it was converted to a
7825 new object of a different type.
7826
7827 Enhanced error messages for all problems associated with namespace
7828 lookups. Common procedure generates and prints the lookup name as
7829 well as the formatted status.
7830
7831 Completed implementation of a new design for the Alias support
7832 within the namespace. The existing design did not handle the case
7833 where a new object was assigned to one of the two names due to the
7834 use of an explicit conversion operator, resulting in the two names
7835 pointing to two different objects. The new design simply points
7836 the Alias name to the original name node - not to the object.
7837 This results in a level of indirection that must be handled in the
7838 name resolution mechanism.
7839
7840 Code and Data Size: Current core subsystem library sizes are shown
7841 below. These are the code and data sizes for the acpica.lib
7842 produced by the Microsoft Visual C++ 6.0 compiler, and these
7843 values do not include any ACPI driver or OSPM code. The debug
7844 version of the code includes the debug output trace mechanism and
7845 has a larger code and data size. Note that these values will vary
7846 depending on the efficiency of the compiler and the compiler
7847 options used during generation.
7848
7849 Previous Release
7850 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
7851 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
7852 Current Release:
7853 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
7854 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
7855
7856
7857 2) Linux
7858
7859 Initialize thermal driver's timer before it is used. (Knut
7860 Neumann)
7861
7862 Allow handling negative celsius values. (Kochi Takayoshi)
7863
7864 Fix thermal management and make trip points. R/W (Pavel Machek)
7865
7866 Fix /proc/acpi/sleep. (P. Christeas)
7867
7868 IA64 fixes. (David Mosberger)
7869
7870 Fix reversed logic in blacklist code. (Sergio Monteiro Basto)
7871
7872 Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik
7873 Brodowski)
7874
7875
7876 3) iASL Compiler/Disassembler
7877
7878 Clarified some warning/error messages.
7879
7880
7881 ----------------------------------------
7882 18 September 2002. Summary of changes for this release.
7883
7884
7885 1) ACPI CA Core Subsystem version 20020918:
7886
7887 Fixed a reported problem with reference chaining (via the Index()
7888 and RefOf() operators) in the ObjectType() and SizeOf() operators.
7889 The definition of these operators includes the dereferencing of
7890 all chained references to return information on the base object.
7891
7892 Fixed a problem with stores to indexed package elements - the
7893 existing code would not complete the store if an "implicit
7894 conversion" was not performed. In other words, if the existing
7895 object (package element) was to be replaced completely, the code
7896 didn't handle this case.
7897
7898 Relaxed typechecking on the ASL "Scope" operator to allow the
7899 target name to refer to an object of type Integer, String, or
7900 Buffer, in addition to the scoping object types (Device,
7901 predefined Scopes, Processor, PowerResource, and ThermalZone.)
7902 This allows existing AML code that has workarounds for a bug in
7903 Windows to function properly. A warning is issued, however. This
7904 affects both the AML interpreter and the iASL compiler. Below is
7905 an example of this type of ASL code:
7906
7907 Name(DEB,0x00)
7908 Scope(DEB)
7909 {
7910
7911 Fixed some reported problems with 64-bit integer support in the
7912 local implementation of C library functions (clib.c)
7913
7914
7915 2) Linux
7916
7917 Use ACPI fix map region instead of IOAPIC region, since it is
7918 undefined in non-SMP.
7919
7920 Ensure that the SCI has the proper polarity and trigger, even on
7921 systems that do not have an interrupt override entry in the MADT.
7922
7923 2.5 big driver reorganization (Pat Mochel)
7924
7925 Use early table mapping code from acpitable.c (Andi Kleen)
7926
7927 New blacklist entries (Andi Kleen)
7928
7929 Blacklist improvements. Split blacklist code out into a separate
7930 file. Move checking the blacklist to very early. Previously, we
7931 would use ACPI tables, and then halfway through init, check the
7932 blacklist -- too late. Now, it's early enough to completely fall-
7933 back to non-ACPI.
7934
7935
7936 3) iASL Compiler/Disassembler version 20020918:
7937
7938 Fixed a problem where the typechecking code didn't know that an
7939 alias could point to a method. In other words, aliases were not
7940 being dereferenced during typechecking.
7941
7942
7943 ----------------------------------------
7944 29 August 2002. Summary of changes for this release.
7945
7946 1) ACPI CA Core Subsystem Version 20020829:
7947
7948 If the target of a Scope() operator already exists, it must be an
7949 object type that actually opens a scope -- such as a Device,
7950 Method, Scope, etc. This is a fatal runtime error. Similar error
7951 check has been added to the iASL compiler also.
7952
7953 Tightened up the namespace load to disallow multiple names in the
7954 same scope. This previously was allowed if both objects were of
7955 the same type. (i.e., a lookup was the same as entering a new
7956 name).
7957
7958
7959 2) Linux
7960
7961 Ensure that the ACPI interrupt has the proper trigger and
7962 polarity.
7963
7964 local_irq_disable is extraneous. (Matthew Wilcox)
7965
7966 Make "acpi=off" actually do what it says, and not use the ACPI
7967 interpreter *or* the tables.
7968
7969 Added arch-neutral support for parsing SLIT and SRAT tables (Kochi
7970 Takayoshi)
7971
7972
7973 3) iASL Compiler/Disassembler Version 20020829:
7974
7975 Implemented namepath optimization for name declarations. For
7976 example, a declaration like "Method (\_SB_.ABCD)" would get
7977 optimized to "Method (ABCD)" if the declaration is within the
7978 \_SB_ scope. This optimization is in addition to the named
7979 reference path optimization first released in the previous
7980 version. This would seem to complete all possible optimizations
7981 for namepaths within the ASL/AML.
7982
7983 If the target of a Scope() operator already exists, it must be an
7984 object type that actually opens a scope -- such as a Device,
7985 Method, Scope, etc.
7986
7987 Implemented a check and warning for unreachable code in the same
7988 block below a Return() statement.
7989
7990 Fixed a problem where the listing file was not generated if the
7991 compiler aborted if the maximum error count was exceeded (200).
7992
7993 Fixed a problem where the typechecking of method return values was
7994 broken. This includes the check for a return value when the
7995 method is invoked as a TermArg (a return value is expected.)
7996
7997 Fixed a reported problem where EOF conditions during a quoted
7998 string or comment caused a fault.
7999
8000
8001 ----------------------------------------
8002 15 August 2002. Summary of changes for this release.
8003
8004 1) ACPI CA Core Subsystem Version 20020815:
8005
8006 Fixed a reported problem where a Store to a method argument that
8007 contains a reference did not perform the indirect store correctly.
8008 This problem was created during the conversion to the new
8009 reference object model - the indirect store to a method argument
8010 code was not updated to reflect the new model.
8011
8012 Reworked the ACPI mode change code to better conform to ACPI 2.0,
8013 handle corner cases, and improve code legibility (Kochi Takayoshi)
8014
8015 Fixed a problem with the pathname parsing for the carat (^)
8016 prefix. The heavy use of the carat operator by the new namepath
8017 optimization in the iASL compiler uncovered a problem with the AML
8018 interpreter handling of this prefix. In the case where one or
8019 more carats precede a single nameseg, the nameseg was treated as
8020 standalone and the search rule (to root) was inadvertently
8021 applied. This could cause both the iASL compiler and the
8022 interpreter to find the wrong object or to miss the error that
8023 should occur if the object does not exist at that exact pathname.
8024
8025 Found and fixed the problem where the HP Pavilion DSDT would not
8026 load. This was a relatively minor tweak to the table loading code
8027 (a problem caused by the unexpected encounter with a method
8028 invocation not within a control method), but it does not solve the
8029 overall issue of the execution of AML code at the table level.
8030 This investigation is still ongoing.
8031
8032 Code and Data Size: Current core subsystem library sizes are shown
8033 below. These are the code and data sizes for the acpica.lib
8034 produced by the Microsoft Visual C++ 6.0 compiler, and these
8035 values do not include any ACPI driver or OSPM code. The debug
8036 version of the code includes the debug output trace mechanism and
8037 has a larger code and data size. Note that these values will vary
8038 depending on the efficiency of the compiler and the compiler
8039 options used during generation.
8040
8041 Previous Release
8042 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
8043 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
8044 Current Release:
8045 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
8046 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
8047
8048
8049 2) Linux
8050
8051 Remove redundant slab.h include (Brad Hards)
8052
8053 Fix several bugs in thermal.c (Herbert Nachtnebel)
8054
8055 Make CONFIG_ACPI_BOOT work properly (Pavel Machek)
8056
8057 Change acpi_system_suspend to use updated irq functions (Pavel
8058 Machek)
8059
8060 Export acpi_get_firmware_table (Matthew Wilcox)
8061
8062 Use proper root proc entry for ACPI (Kochi Takayoshi)
8063
8064 Fix early-boot table parsing (Bjorn Helgaas)
8065
8066
8067 3) iASL Compiler/Disassembler
8068
8069 Reworked the compiler options to make them more consistent and to
8070 use two-letter options where appropriate. We were running out of
8071 sensible letters. This may break some makefiles, so check the
8072 current options list by invoking the compiler with no parameters.
8073
8074 Completed the design and implementation of the ASL namepath
8075 optimization option for the compiler. This option optimizes all
8076 references to named objects to the shortest possible path. The
8077 first attempt tries to utilize a single nameseg (4 characters) and
8078 the "search-to-root" algorithm used by the interpreter. If that
8079 cannot be used (because either the name is not in the search path
8080 or there is a conflict with another object with the same name),
8081 the pathname is optimized using the carat prefix (usually a
8082 shorter string than specifying the entire path from the root.)
8083
8084 Implemented support to obtain the DSDT from the Windows registry
8085 (when the disassembly option is specified with no input file).
8086 Added this code as the implementation for AcpiOsTableOverride in
8087 the Windows OSL. Migrated the 16-bit code (used in the AcpiDump
8088 utility) to scan memory for the DSDT to the AcpiOsTableOverride
8089 function in the DOS OSL to make the disassembler truly OS
8090 independent.
8091
8092 Implemented a new option to disassemble and compile in one step.
8093 When used without an input filename, this option will grab the
8094 DSDT from the local machine, disassemble it, and compile it in one
8095 step.
8096
8097 Added a warning message for invalid escapes (a backslash followed
8098 by any character other than the allowable escapes). This catches
8099 the quoted string error "\_SB_" (which should be "\\_SB_" ).
8100
8101 Also, there are numerous instances in the ACPI specification where
8102 this error occurs.
8103
8104 Added a compiler option to disable all optimizations. This is
8105 basically the "compatibility mode" because by using this option,
8106 the AML code will come out exactly the same as other ASL
8107 compilers.
8108
8109 Added error messages for incorrectly ordered dependent resource
8110 functions. This includes: missing EndDependentFn macro at end of
8111 dependent resource list, nested dependent function macros (both
8112 start and end), and missing StartDependentFn macro. These are
8113 common errors that should be caught at compile time.
8114
8115 Implemented _OSI support for the disassembler and compiler. _OSI
8116 must be included in the namespace for proper disassembly (because
8117 the disassembler must know the number of arguments.)
8118
8119 Added an "optimization" message type that is optional (off by
8120 default). This message is used for all optimizations - including
8121 constant folding, integer optimization, and namepath optimization.
8122
8123 ----------------------------------------
8124 25 July 2002. Summary of changes for this release.
8125
8126
8127 1) ACPI CA Core Subsystem Version 20020725:
8128
8129 The AML Disassembler has been enhanced to produce compilable ASL
8130 code and has been integrated into the iASL compiler (see below) as
8131 well as the single-step disassembly for the AML debugger and the
8132 disassembler for the AcpiDump utility. All ACPI 2.0A opcodes,
8133 resource templates and macros are fully supported. The
8134 disassembler has been tested on over 30 different AML files,
8135 producing identical AML when the resulting disassembled ASL file
8136 is recompiled with the same ASL compiler.
8137
8138 Modified the Resource Manager to allow zero interrupts and zero
8139 dma channels during the GetCurrentResources call. This was
8140 causing problems on some platforms.
8141
8142 Added the AcpiOsRedirectOutput interface to the OSL to simplify
8143 output redirection for the AcpiOsPrintf and AcpiOsVprintf
8144 interfaces.
8145
8146 Code and Data Size: Current core subsystem library sizes are shown
8147 below. These are the code and data sizes for the acpica.lib
8148 produced by the Microsoft Visual C++ 6.0 compiler, and these
8149 values do not include any ACPI driver or OSPM code. The debug
8150 version of the code includes the debug output trace mechanism and
8151 has a larger code and data size. Note that these values will vary
8152 depending on the efficiency of the compiler and the compiler
8153 options used during generation.
8154
8155 Previous Release
8156 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
8157 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
8158 Current Release:
8159 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
8160 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
8161
8162
8163 2) Linux
8164
8165 Fixed a panic in the EC driver (Dominik Brodowski)
8166
8167 Implemented checksum of the R/XSDT itself during Linux table scan
8168 (Richard Schaal)
8169
8170
8171 3) iASL compiler
8172
8173 The AML disassembler is integrated into the compiler. The "-d"
8174 option invokes the disassembler to completely disassemble an
8175 input AML file, producing as output a text ASL file with the
8176 extension ".dsl" (to avoid name collisions with existing .asl
8177 source files.) A future enhancement will allow the disassembler
8178 to obtain the BIOS DSDT from the registry under Windows.
8179
8180 Fixed a problem with the VendorShort and VendorLong resource
8181 descriptors where an invalid AML sequence was created.
8182
8183 Implemented a fix for BufferData term in the ASL parser. It was
8184 inadvertently defined twice, allowing invalid syntax to pass and
8185 causing reduction conflicts.
8186
8187 Fixed a problem where the Ones opcode could get converted to a
8188 value of zero if "Ones" was used where a byte, word or dword value
8189 was expected. The 64-bit value is now truncated to the correct
8190 size with the correct value.
8191
8192
8193
8194 ----------------------------------------
8195 02 July 2002. Summary of changes for this release.
8196
8197
8198 1) ACPI CA Core Subsystem Version 20020702:
8199
8200 The Table Manager code has been restructured to add several new
8201 features. Tables that are not required by the core subsystem
8202 (other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer
8203 validated in any way and are returned from AcpiGetFirmwareTable if
8204 requested. The AcpiOsTableOverride interface is now called for
8205 each table that is loaded by the subsystem in order to allow the
8206 host to override any table it chooses. Previously, only the DSDT
8207 could be overridden. Added one new files, tbrsdt.c and
8208 tbgetall.c.
8209
8210 Fixed a problem with the conversion of internal package objects to
8211 external objects (when a package is returned from a control
8212 method.) The return buffer length was set to zero instead of the
8213 proper length of the package object.
8214
8215 Fixed a reported problem with the use of the RefOf and DeRefOf
8216 operators when passing reference arguments to control methods. A
8217 new type of Reference object is used internally for references
8218 produced by the RefOf operator.
8219
8220 Added additional error messages in the Resource Manager to explain
8221 AE_BAD_DATA errors when they occur during resource parsing.
8222
8223 Split the AcpiEnableSubsystem into two primitives to enable a
8224 finer granularity initialization sequence. These two calls should
8225 be called in this order: AcpiEnableSubsystem (flags),
8226 AcpiInitializeObjects (flags). The flags parameter remains the
8227 same.
8228
8229
8230 2) Linux
8231
8232 Updated the ACPI utilities module to understand the new style of
8233 fully resolved package objects that are now returned from the core
8234 subsystem. This eliminates errors of the form:
8235
8236 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT]
8237 acpi_utils-0430 [145] acpi_evaluate_reference:
8238 Invalid element in package (not a device reference)
8239
8240 The method evaluation utility uses the new buffer allocation
8241 scheme instead of calling AcpiEvaluate Object twice.
8242
8243 Added support for ECDT. This allows the use of the Embedded
8244
8245 Controller before the namespace has been fully initialized, which
8246 is necessary for ACPI 2.0 support, and for some laptops to
8247 initialize properly. (Laptops using ECDT are still rare, so only
8248 limited testing was performed of the added functionality.)
8249
8250 Fixed memory leaks in the EC driver.
8251
8252 Eliminated a brittle code structure in acpi_bus_init().
8253
8254 Eliminated the acpi_evaluate() helper function in utils.c. It is
8255 no longer needed since acpi_evaluate_object can optionally
8256 allocate memory for the return object.
8257
8258 Implemented fix for keyboard hang when getting battery readings on
8259 some systems (Stephen White)
8260
8261 PCI IRQ routing update (Dominik Brodowski)
8262
8263 Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC
8264 support
8265
8266 ----------------------------------------
8267 11 June 2002. Summary of changes for this release.
8268
8269
8270 1) ACPI CA Core Subsystem Version 20020611:
8271
8272 Fixed a reported problem where constants such as Zero and One
8273 appearing within _PRT packages were not handled correctly within
8274 the resource manager code. Originally reported against the ASL
8275 compiler because the code generator now optimizes integers to
8276 their minimal AML representation (i.e. AML constants if possible.)
8277 The _PRT code now handles all AML constant opcodes correctly
8278 (Zero, One, Ones, Revision).
8279
8280 Fixed a problem with the Concatenate operator in the AML
8281 interpreter where a buffer result object was incorrectly marked as
8282 not fully evaluated, causing a run-time error of AE_AML_INTERNAL.
8283
8284 All package sub-objects are now fully resolved before they are
8285 returned from the external ACPI interfaces. This means that name
8286 strings are resolved to object handles, and constant operators
8287 (Zero, One, Ones, Revision) are resolved to Integers.
8288
8289 Implemented immediate resolution of the AML Constant opcodes
8290 (Zero, One, Ones, Revision) to Integer objects upon detection
8291 within the AML stream. This has simplified and reduced the
8292 generated code size of the subsystem by eliminating about 10
8293 switch statements for these constants (which previously were
8294 contained in Reference objects.) The complicating issues are that
8295 the Zero opcode is used as a "placeholder" for unspecified
8296 optional target operands and stores to constants are defined to be
8297 no-ops.
8298
8299 Code and Data Size: Current core subsystem library sizes are shown
8300 below. These are the code and data sizes for the acpica.lib
8301 produced by the Microsoft Visual C++ 6.0 compiler, and these
8302 values do not include any ACPI driver or OSPM code. The debug
8303 version of the code includes the debug output trace mechanism and
8304 has a larger code and data size. Note that these values will vary
8305 depending on the efficiency of the compiler and the compiler
8306 options used during generation.
8307
8308 Previous Release
8309 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
8310 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
8311 Current Release:
8312 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
8313 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
8314
8315
8316 2) Linux
8317
8318
8319 Added preliminary support for obtaining _TRA data for PCI root
8320 bridges (Bjorn Helgaas).
8321
8322
8323 3) iASL Compiler Version X2046:
8324
8325 Fixed a problem where the "_DDN" reserved name was defined to be a
8326 control method with one argument. There are no arguments, and
8327 _DDN does not have to be a control method.
8328
8329 Fixed a problem with the Linux version of the compiler where the
8330 source lines printed with error messages were the wrong lines.
8331 This turned out to be the "LF versus CR/LF" difference between
8332 Windows and Unix. This appears to be the longstanding issue
8333 concerning listing output and error messages.
8334
8335 Fixed a problem with the Linux version of compiler where opcode
8336 names within error messages were wrong. This was caused by a
8337 slight difference in the output of the Flex tool on Linux versus
8338 Windows.
8339
8340 Fixed a problem with the Linux compiler where the hex output files
8341 contained some garbage data caused by an internal buffer overrun.
8342
8343
8344 ----------------------------------------
8345 17 May 2002. Summary of changes for this release.
8346
8347
8348 1) ACPI CA Core Subsystem Version 20020517:
8349
8350 Implemented a workaround to an BIOS bug discovered on the HP
8351 OmniBook where the FADT revision number and the table size are
8352 inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new
8353 behavior is to fallback to using only the ACPI 1.0 fields of the
8354 FADT if the table is too small to be a ACPI 2.0 table as claimed
8355 by the revision number. Although this is a BIOS bug, this is a
8356 case where the workaround is simple enough and with no side
8357 effects, so it seemed prudent to add it. A warning message is
8358 issued, however.
8359
8360 Implemented minimum size checks for the fixed-length ACPI tables -
8361 - the FADT and FACS, as well as consistency checks between the
8362 revision number and the table size.
8363
8364 Fixed a reported problem in the table override support where the
8365 new table pointer was incorrectly treated as a physical address
8366 instead of a logical address.
8367
8368 Eliminated the use of the AE_AML_ERROR exception and replaced it
8369 with more descriptive codes.
8370
8371 Fixed a problem where an exception would occur if an ASL Field was
8372 defined with no named Field Units underneath it (used by some
8373 index fields).
8374
8375 Code and Data Size: Current core subsystem library sizes are shown
8376 below. These are the code and data sizes for the acpica.lib
8377 produced by the Microsoft Visual C++ 6.0 compiler, and these
8378 values do not include any ACPI driver or OSPM code. The debug
8379 version of the code includes the debug output trace mechanism and
8380 has a larger code and data size. Note that these values will vary
8381 depending on the efficiency of the compiler and the compiler
8382 options used during generation.
8383
8384 Previous Release
8385 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
8386 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
8387 Current Release:
8388 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
8389 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
8390
8391
8392
8393 2) Linux
8394
8395 Much work done on ACPI init (MADT and PCI IRQ routing support).
8396 (Paul D. and Dominik Brodowski)
8397
8398 Fix PCI IRQ-related panic on boot (Sam Revitch)
8399
8400 Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno)
8401
8402 Fix "MHz" typo (Dominik Brodowski)
8403
8404 Fix RTC year 2000 issue (Dominik Brodowski)
8405
8406 Preclude multiple button proc entries (Eric Brunet)
8407
8408 Moved arch-specific code out of include/platform/aclinux.h
8409
8410 3) iASL Compiler Version X2044:
8411
8412 Implemented error checking for the string used in the EISAID macro
8413 (Usually used in the definition of the _HID object.) The code now
8414 strictly enforces the PnP format - exactly 7 characters, 3
8415 uppercase letters and 4 hex digits.
8416
8417 If a raw string is used in the definition of the _HID object
8418 (instead of the EISAID macro), the string must contain all
8419 alphanumeric characters (e.g., "*PNP0011" is not allowed because
8420 of the asterisk.)
8421
8422 Implemented checking for invalid use of ACPI reserved names for
8423 most of the name creation operators (Name, Device, Event, Mutex,
8424 OperationRegion, PowerResource, Processor, and ThermalZone.)
8425 Previously, this check was only performed for control methods.
8426
8427 Implemented an additional check on the Name operator to emit an
8428 error if a reserved name that must be implemented in ASL as a
8429 control method is used. We know that a reserved name must be a
8430 method if it is defined with input arguments.
8431
8432 The warning emitted when a namespace object reference is not found
8433 during the cross reference phase has been changed into an error.
8434 The "External" directive should be used for names defined in other
8435 modules.
8436
8437
8438 4) Tools and Utilities
8439
8440 The 16-bit tools (adump16 and aexec16) have been regenerated and
8441 tested.
8442
8443 Fixed a problem with the output of both acpidump and adump16 where
8444 the indentation of closing parentheses and brackets was not
8445
8446 aligned properly with the parent block.
8447
8448
8449 ----------------------------------------
8450 03 May 2002. Summary of changes for this release.
8451
8452
8453 1) ACPI CA Core Subsystem Version 20020503:
8454
8455 Added support a new OSL interface that allows the host operating
8456
8457 system software to override the DSDT found in the firmware -
8458 AcpiOsTableOverride. With this interface, the OSL can examine the
8459 version of the firmware DSDT and replace it with a different one
8460 if desired.
8461
8462 Added new external interfaces for accessing ACPI registers from
8463 device drivers and other system software - AcpiGetRegister and
8464 AcpiSetRegister. This was simply an externalization of the
8465 existing AcpiHwBitRegister interfaces.
8466
8467 Fixed a regression introduced in the previous build where the
8468 ASL/AML CreateField operator always returned an error,
8469 "destination must be a NS Node".
8470
8471 Extended the maximum time (before failure) to successfully enable
8472 ACPI mode to 3 seconds.
8473
8474 Code and Data Size: Current core subsystem library sizes are shown
8475 below. These are the code and data sizes for the acpica.lib
8476 produced by the Microsoft Visual C++ 6.0 compiler, and these
8477 values do not include any ACPI driver or OSPM code. The debug
8478 version of the code includes the debug output trace mechanism and
8479 has a larger code and data size. Note that these values will vary
8480 depending on the efficiency of the compiler and the compiler
8481 options used during generation.
8482
8483 Previous Release
8484 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
8485 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
8486 Current Release:
8487 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
8488 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
8489
8490
8491 2) Linux
8492
8493 Enhanced ACPI init code for SMP. We are now fully MPS and $PIR-
8494 free. While 3 out of 4 of our in-house systems work fine, the last
8495 one still hangs when testing the LAPIC timer.
8496
8497 Renamed many files in 2.5 kernel release to omit "acpi_" from the
8498 name.
8499
8500 Added warning on boot for Presario 711FR.
8501
8502 Sleep improvements (Pavel Machek)
8503
8504 ACPI can now be built without CONFIG_PCI enabled.
8505
8506 IA64: Fixed memory map functions (JI Lee)
8507
8508
8509 3) iASL Compiler Version X2043:
8510
8511 Added support to allow the compiler to be integrated into the MS
8512 VC++ development environment for one-button compilation of single
8513 files or entire projects -- with error-to-source-line mapping.
8514
8515 Implemented support for compile-time constant folding for the
8516 Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0
8517 specification. This allows the ASL writer to use expressions
8518 instead of Integer/Buffer/String constants in terms that must
8519 evaluate to constants at compile time and will also simplify the
8520 emitted AML in any such sub-expressions that can be folded
8521 (evaluated at compile-time.) This increases the size of the
8522 compiler significantly because a portion of the ACPI CA AML
8523 interpreter is included within the compiler in order to pre-
8524 evaluate constant expressions.
8525
8526
8527 Fixed a problem with the "Unicode" ASL macro that caused the
8528 compiler to fault. (This macro is used in conjunction with the
8529 _STR reserved name.)
8530
8531 Implemented an AML opcode optimization to use the Zero, One, and
8532 Ones opcodes where possible to further reduce the size of integer
8533 constants and thus reduce the overall size of the generated AML
8534 code.
8535
8536 Implemented error checking for new reserved terms for ACPI version
8537 2.0A.
8538
8539 Implemented the -qr option to display the current list of ACPI
8540 reserved names known to the compiler.
8541
8542 Implemented the -qc option to display the current list of ASL
8543 operators that are allowed within constant expressions and can
8544 therefore be folded at compile time if the operands are constants.
8545
8546
8547 4) Documentation
8548
8549 Updated the Programmer's Reference for new interfaces, data types,
8550 and memory allocation model options.
8551
8552 Updated the iASL Compiler User Reference to apply new format and
8553 add information about new features and options.
8554
8555 ----------------------------------------
8556 19 April 2002. Summary of changes for this release.
8557
8558 1) ACPI CA Core Subsystem Version 20020419:
8559
8560 The source code base for the Core Subsystem has been completely
8561 cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit
8562 versions. The Lint option files used are included in the
8563 /acpi/generate/lint directory.
8564
8565 Implemented enhanced status/error checking across the entire
8566 Hardware manager subsystem. Any hardware errors (reported from
8567 the OSL) are now bubbled up and will abort a running control
8568 method.
8569
8570
8571 Fixed a problem where the per-ACPI-table integer width (32 or 64)
8572 was stored only with control method nodes, causing a fault when
8573 non-control method code was executed during table loading. The
8574 solution implemented uses a global variable to indicate table
8575 width across the entire ACPI subsystem. Therefore, ACPI CA does
8576 not support mixed integer widths across different ACPI tables
8577 (DSDT, SSDT).
8578
8579 Fixed a problem where NULL extended fields (X fields) in an ACPI
8580 2.0 ACPI FADT caused the table load to fail. Although the
8581 existing ACPI specification is a bit fuzzy on this topic, the new
8582 behavior is to fall back on a ACPI 1.0 field if the corresponding
8583 ACPI 2.0 X field is zero (even though the table revision indicates
8584 a full ACPI 2.0 table.) The ACPI specification will be updated to
8585 clarify this issue.
8586
8587 Fixed a problem with the SystemMemory operation region handler
8588 where memory was always accessed byte-wise even if the AML-
8589 specified access width was larger than a byte. This caused
8590 problems on systems with memory-mapped I/O. Memory is now
8591 accessed with the width specified. On systems that do not support
8592 non-aligned transfers, a check is made to guarantee proper address
8593 alignment before proceeding in order to avoid an AML-caused
8594 alignment fault within the kernel.
8595
8596
8597 Fixed a problem with the ExtendedIrq resource where only one byte
8598 of the 4-byte Irq field was extracted.
8599
8600 Fixed the AcpiExDigitsNeeded() procedure to support _UID. This
8601 function was out of date and required a rewrite.
8602
8603 Code and Data Size: Current core subsystem library sizes are shown
8604 below. These are the code and data sizes for the acpica.lib
8605 produced by the Microsoft Visual C++ 6.0 compiler, and these
8606 values do not include any ACPI driver or OSPM code. The debug
8607 version of the code includes the debug output trace mechanism and
8608 has a larger code and data size. Note that these values will vary
8609 depending on the efficiency of the compiler and the compiler
8610 options used during generation.
8611
8612 Previous Release
8613 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
8614 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
8615 Current Release:
8616 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
8617 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
8618
8619
8620 2) Linux
8621
8622 PCI IRQ routing fixes (Dominik Brodowski)
8623
8624
8625 3) iASL Compiler Version X2042:
8626
8627 Implemented an additional compile-time error check for a field
8628 unit whose size + minimum access width would cause a run-time
8629 access beyond the end-of-region. Previously, only the field size
8630 itself was checked.
8631
8632 The Core subsystem and iASL compiler now share a common parse
8633 object in preparation for compile-time evaluation of the type
8634 3/4/5 ASL operators.
8635
8636
8637 ----------------------------------------
8638 Summary of changes for this release: 03_29_02
8639
8640 1) ACPI CA Core Subsystem Version 20020329:
8641
8642 Implemented support for late evaluation of TermArg operands to
8643 Buffer and Package objects. This allows complex expressions to be
8644 used in the declarations of these object types.
8645
8646 Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI
8647 1.0, if the field was larger than 32 bits, it was returned as a
8648 buffer - otherwise it was returned as an integer. In ACPI 2.0,
8649 the field is returned as a buffer only if the field is larger than
8650 64 bits. The TableRevision is now considered when making this
8651 conversion to avoid incompatibility with existing ASL code.
8652
8653 Implemented logical addressing for AcpiOsGetRootPointer. This
8654 allows an RSDP with either a logical or physical address. With
8655 this support, the host OS can now override all ACPI tables with
8656 one logical RSDP. Includes implementation of "typed" pointer
8657 support to allow a common data type for both physical and logical
8658 pointers internally. This required a change to the
8659 AcpiOsGetRootPointer interface.
8660
8661 Implemented the use of ACPI 2.0 Generic Address Structures for all
8662 GPE, Fixed Event, and PM Timer I/O. This allows the use of memory
8663 mapped I/O for these ACPI features.
8664
8665 Initialization now ignores not only non-required tables (All
8666 tables other than the FADT, FACS, DSDT, and SSDTs), but also does
8667 not validate the table headers of unrecognized tables.
8668
8669 Fixed a problem where a notify handler could only be
8670 installed/removed on an object of type Device. All "notify"
8671
8672 objects are now supported -- Devices, Processor, Power, and
8673 Thermal.
8674
8675 Removed most verbosity from the ACPI_DB_INFO debug level. Only
8676 critical information is returned when this debug level is enabled.
8677
8678 Code and Data Size: Current core subsystem library sizes are shown
8679 below. These are the code and data sizes for the acpica.lib
8680 produced by the Microsoft Visual C++ 6.0 compiler, and these
8681 values do not include any ACPI driver or OSPM code. The debug
8682 version of the code includes the debug output trace mechanism and
8683 has a larger code and data size. Note that these values will vary
8684 depending on the efficiency of the compiler and the compiler
8685 options used during generation.
8686
8687 Previous Release
8688 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
8689 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
8690 Current Release:
8691 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
8692 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
8693
8694
8695 2) Linux:
8696
8697 The processor driver (acpi_processor.c) now fully supports ACPI
8698 2.0-based processor performance control (e.g. Intel(R)
8699 SpeedStep(TM) technology) Note that older laptops that only have
8700 the Intel "applet" interface are not supported through this. The
8701 'limit' and 'performance' interface (/proc) are fully functional.
8702 [Note that basic policy for controlling performance state
8703 transitions will be included in the next version of ospmd.] The
8704 idle handler was modified to more aggressively use C2, and PIIX4
8705 errata handling underwent a complete overhaul (big thanks to
8706 Dominik Brodowski).
8707
8708 Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR-
8709 based devices in the ACPI namespace are now dynamically bound
8710 (associated) with their PCI counterparts (e.g. PCI1->01:00.0).
8711 This allows, among other things, ACPI to resolve bus numbers for
8712 subordinate PCI bridges.
8713
8714 Enhanced PCI IRQ routing to get the proper bus number for _PRT
8715 entries defined underneath PCI bridges.
8716
8717 Added IBM 600E to bad bios list due to invalid _ADR value for
8718 PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing.
8719
8720 In the process of adding full MADT support (e.g. IOAPIC) for IA32
8721 (acpi.c, mpparse.c) -- stay tuned.
8722
8723 Added back visual differentiation between fixed-feature and
8724 control-method buttons in dmesg. Buttons are also subtyped (e.g.
8725 button/power/PWRF) to simplify button identification.
8726
8727 We no longer use -Wno-unused when compiling debug. Please ignore
8728 any "_THIS_MODULE defined but not used" messages.
8729
8730 Can now shut down the system using "magic sysrq" key.
8731
8732
8733 3) iASL Compiler version 2041:
8734
8735 Fixed a problem where conversion errors for hex/octal/decimal
8736 constants were not reported.
8737
8738 Implemented a fix for the General Register template Address field.
8739 This field was 8 bits when it should be 64.
8740
8741 Fixed a problem where errors/warnings were no longer being emitted
8742 within the listing output file.
8743
8744 Implemented the ACPI 2.0A restriction on ACPI Table Signatures to
8745 exactly 4 characters, alphanumeric only.
8746
8747
8748
8749
8750 ----------------------------------------
8751 Summary of changes for this release: 03_08_02
8752
8753
8754 1) ACPI CA Core Subsystem Version 20020308:
8755
8756 Fixed a problem with AML Fields where the use of the "AccessAny"
8757 keyword could cause an interpreter error due to attempting to read
8758 or write beyond the end of the parent Operation Region.
8759
8760 Fixed a problem in the SystemMemory Operation Region handler where
8761 an attempt was made to map memory beyond the end of the region.
8762 This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY"
8763 errors on some Linux systems.
8764
8765 Fixed a problem where the interpreter/namespace "search to root"
8766 algorithm was not functioning for some object types. Relaxed the
8767 internal restriction on the search to allow upsearches for all
8768 external object types as well as most internal types.
8769
8770
8771 2) Linux:
8772
8773 We now use safe_halt() macro versus individual calls to sti | hlt.
8774
8775 Writing to the processor limit interface should now work. "echo 1"
8776 will increase the limit, 2 will decrease, and 0 will reset to the
8777
8778 default.
8779
8780
8781 3) ASL compiler:
8782
8783 Fixed segfault on Linux version.
8784
8785
8786 ----------------------------------------
8787 Summary of changes for this release: 02_25_02
8788
8789 1) ACPI CA Core Subsystem:
8790
8791
8792 Fixed a problem where the GPE bit masks were not initialized
8793 properly, causing erratic GPE behavior.
8794
8795 Implemented limited support for multiple calling conventions. The
8796 code can be generated with either the VPL (variable parameter
8797 list, or "C") convention, or the FPL (fixed parameter list, or
8798 "Pascal") convention. The core subsystem is about 3.4% smaller
8799 when generated with FPL.
8800
8801
8802 2) Linux
8803
8804 Re-add some /proc/acpi/event functionality that was lost during
8805 the rewrite
8806
8807 Resolved issue with /proc events for fixed-feature buttons showing
8808 up as the system device.
8809
8810 Fixed checks on C2/C3 latencies to be inclusive of maximum values.
8811
8812 Replaced AE_ERRORs in acpi_osl.c with more specific error codes.
8813
8814 Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi"
8815
8816 Fixed limit interface & usage to fix bugs with passive cooling
8817 hysterisis.
8818
8819 Restructured PRT support.
8820
8821
8822 ----------------------------------------
8823 Summary of changes for this label: 02_14_02
8824
8825
8826 1) ACPI CA Core Subsystem:
8827
8828 Implemented support in AcpiLoadTable to allow loading of FACS and
8829 FADT tables.
8830
8831 Suport for the now-obsolete interim 0.71 64-bit ACPI tables has
8832 been removed. All 64-bit platforms should be migrated to the ACPI
8833 2.0 tables. The actbl71.h header has been removed from the source
8834 tree.
8835
8836 All C macros defined within the subsystem have been prefixed with
8837 "ACPI_" to avoid collision with other system include files.
8838
8839 Removed the return value for the two AcpiOsPrint interfaces, since
8840 it is never used and causes lint warnings for ignoring the return
8841 value.
8842
8843 Added error checking to all internal mutex acquire and release
8844 calls. Although a failure from one of these interfaces is
8845 probably a fatal system error, these checks will cause the
8846 immediate abort of the currently executing method or interface.
8847
8848 Fixed a problem where the AcpiSetCurrentResources interface could
8849 fault. This was a side effect of the deployment of the new memory
8850 allocation model.
8851
8852 Fixed a couple of problems with the Global Lock support introduced
8853 in the last major build. The "common" (1.0/2.0) internal FACS was
8854 being overwritten with the FACS signature and clobbering the
8855 Global Lock pointer. Also, the actual firmware FACS was being
8856 unmapped after construction of the "common" FACS, preventing
8857 access to the actual Global Lock field within it. The "common"
8858 internal FACS is no longer installed as an actual ACPI table; it
8859 is used simply as a global.
8860
8861 Code and Data Size: Current core subsystem library sizes are shown
8862 below. These are the code and data sizes for the acpica.lib
8863 produced by the Microsoft Visual C++ 6.0 compiler, and these
8864 values do not include any ACPI driver or OSPM code. The debug
8865 version of the code includes the debug output trace mechanism and
8866 has a larger code and data size. Note that these values will vary
8867 depending on the efficiency of the compiler and the compiler
8868 options used during generation.
8869
8870 Previous Release (02_07_01)
8871 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
8872 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
8873 Current Release:
8874 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
8875 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
8876
8877
8878 2) Linux
8879
8880 Updated Linux-specific code for core macro and OSL interface
8881 changes described above.
8882
8883 Improved /proc/acpi/event. It now can be opened only once and has
8884 proper poll functionality.
8885
8886 Fixed and restructured power management (acpi_bus).
8887
8888 Only create /proc "view by type" when devices of that class exist.
8889
8890 Fixed "charging/discharging" bug (and others) in acpi_battery.
8891
8892 Improved thermal zone code.
8893
8894
8895 3) ASL Compiler, version X2039:
8896
8897
8898 Implemented the new compiler restriction on ASL String hex/octal
8899 escapes to non-null, ASCII values. An error results if an invalid
8900 value is used. (This will require an ACPI 2.0 specification
8901 change.)
8902
8903 AML object labels that are output to the optional C and ASM source
8904 are now prefixed with both the ACPI table signature and table ID
8905 to help guarantee uniqueness within a large BIOS project.
8906
8907
8908 ----------------------------------------
8909 Summary of changes for this label: 02_01_02
8910
8911 1) ACPI CA Core Subsystem:
8912
8913 ACPI 2.0 support is complete in the entire Core Subsystem and the
8914 ASL compiler. All new ACPI 2.0 operators are implemented and all
8915 other changes for ACPI 2.0 support are complete. With
8916 simultaneous code and data optimizations throughout the subsystem,
8917 ACPI 2.0 support has been implemented with almost no additional
8918 cost in terms of code and data size.
8919
8920 Implemented a new mechanism for allocation of return buffers. If
8921 the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will
8922 be allocated on behalf of the caller. Consolidated all return
8923 buffer validation and allocation to a common procedure. Return
8924 buffers will be allocated via the primary OSL allocation interface
8925 since it appears that a separate pool is not needed by most users.
8926 If a separate pool is required for these buffers, the caller can
8927 still use the original mechanism and pre-allocate the buffer(s).
8928
8929 Implemented support for string operands within the DerefOf
8930 operator.
8931
8932 Restructured the Hardware and Event managers to be table driven,
8933 simplifying the source code and reducing the amount of generated
8934 code.
8935
8936 Split the common read/write low-level ACPI register bitfield
8937 procedure into a separate read and write, simplifying the code
8938 considerably.
8939
8940 Obsoleted the AcpiOsCallocate OSL interface. This interface was
8941 used only a handful of times and didn't have enough critical mass
8942 for a separate interface. Replaced with a common calloc procedure
8943 in the core.
8944
8945 Fixed a reported problem with the GPE number mapping mechanism
8946 that allows GPE1 numbers to be non-contiguous with GPE0.
8947 Reorganized the GPE information and shrunk a large array that was
8948 originally large enough to hold info for all possible GPEs (256)
8949 to simply large enough to hold all GPEs up to the largest GPE
8950 number on the machine.
8951
8952 Fixed a reported problem with resource structure alignment on 64-
8953 bit platforms.
8954
8955 Changed the AcpiEnableEvent and AcpiDisableEvent external
8956 interfaces to not require any flags for the common case of
8957 enabling/disabling a GPE.
8958
8959 Implemented support to allow a "Notify" on a Processor object.
8960
8961 Most TBDs in comments within the source code have been resolved
8962 and eliminated.
8963
8964
8965 Fixed a problem in the interpreter where a standalone parent
8966 prefix (^) was not handled correctly in the interpreter and
8967 debugger.
8968
8969 Removed obsolete and unnecessary GPE save/restore code.
8970
8971 Implemented Field support in the ASL Load operator. This allows a
8972 table to be loaded from a named field, in addition to loading a
8973 table directly from an Operation Region.
8974
8975 Implemented timeout and handle support in the external Global Lock
8976 interfaces.
8977
8978 Fixed a problem in the AcpiDump utility where pathnames were no
8979 longer being generated correctly during the dump of named objects.
8980
8981 Modified the AML debugger to give a full display of if/while
8982 predicates instead of just one AML opcode at a time. (The
8983 predicate can have several nested ASL statements.) The old method
8984 was confusing during single stepping.
8985
8986 Code and Data Size: Current core subsystem library sizes are shown
8987 below. These are the code and data sizes for the acpica.lib
8988 produced by the Microsoft Visual C++ 6.0 compiler, and these
8989 values do not include any ACPI driver or OSPM code. The debug
8990 version of the code includes the debug output trace mechanism and
8991 has a larger code and data size. Note that these values will vary
8992 depending on the efficiency of the compiler and the compiler
8993 options used during generation.
8994
8995 Previous Release (12_18_01)
8996 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
8997 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
8998 Current Release:
8999 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
9000 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
9001
9002 2) Linux
9003
9004 Implemented fix for PIIX reverse throttling errata (Processor
9005 driver)
9006
9007 Added new Limit interface (Processor and Thermal drivers)
9008
9009 New thermal policy (Thermal driver)
9010
9011 Many updates to /proc
9012
9013 Battery "low" event support (Battery driver)
9014
9015 Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers)
9016
9017 IA32 - IA64 initialization unification, no longer experimental
9018
9019 Menuconfig options redesigned
9020
9021 3) ASL Compiler, version X2037:
9022
9023 Implemented several new output features to simplify integration of
9024 AML code into firmware: 1) Output the AML in C source code with
9025 labels for each named ASL object. The original ASL source code
9026 is interleaved as C comments. 2) Output the AML in ASM source code
9027 with labels and interleaved ASL source. 3) Output the AML in
9028 raw hex table form, in either C or ASM.
9029
9030 Implemented support for optional string parameters to the
9031 LoadTable operator.
9032
9033 Completed support for embedded escape sequences within string
9034 literals. The compiler now supports all single character escapes
9035 as well as the Octal and Hex escapes. Note: the insertion of a
9036 null byte into a string literal (via the hex/octal escape) causes
9037 the string to be immediately terminated. A warning is issued.
9038
9039 Fixed a problem where incorrect AML was generated for the case
9040 where an ASL namepath consists of a single parent prefix (
9041
9042 ) with no trailing name segments.
9043
9044 The compiler has been successfully generated with a 64-bit C
9045 compiler.
9046
9047
9048
9049
9050 ----------------------------------------
9051 Summary of changes for this label: 12_18_01
9052
9053 1) Linux
9054
9055 Enhanced blacklist with reason and severity fields. Any table's
9056 signature may now be used to identify a blacklisted system.
9057
9058 Call _PIC control method to inform the firmware which interrupt
9059 model the OS is using. Turn on any disabled link devices.
9060
9061 Cleaned up busmgr /proc error handling (Andreas Dilger)
9062
9063 2) ACPI CA Core Subsystem:
9064
9065 Implemented ACPI 2.0 semantics for the "Break" operator (Exit from
9066 while loop)
9067
9068 Completed implementation of the ACPI 2.0 "Continue",
9069 "ConcatenateResTemplate", "DataTableRegion", and "LoadTable"
9070 operators. All new ACPI 2.0 operators are now implemented in both
9071 the ASL compiler and the AML interpreter. The only remaining ACPI
9072 2.0 task is support for the String data type in the DerefOf
9073 operator. Fixed a problem with AcquireMutex where the status code
9074 was lost if the caller had to actually wait for the mutex.
9075
9076 Increased the maximum ASL Field size from 64K bits to 4G bits.
9077
9078 Completed implementation of the external Global Lock interfaces --
9079 AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and
9080 Handler parameters were added.
9081
9082 Completed another pass at removing warnings and issues when
9083 compiling with 64-bit compilers. The code now compiles cleanly
9084 with the Intel 64-bit C/C++ compiler. Most notably, the pointer
9085 add and subtract (diff) macros have changed considerably.
9086
9087
9088 Created and deployed a new ACPI_SIZE type that is 64-bits wide on
9089 64-bit platforms, 32-bits on all others. This type is used
9090 wherever memory allocation and/or the C sizeof() operator is used,
9091 and affects the OSL memory allocation interfaces AcpiOsAllocate
9092 and AcpiOsCallocate.
9093
9094 Implemented sticky user breakpoints in the AML debugger.
9095
9096 Code and Data Size: Current core subsystem library sizes are shown
9097 below. These are the code and data sizes for the acpica.lib
9098 produced by the Microsoft Visual C++ 6.0 compiler, and these
9099 values do not include any ACPI driver or OSPM code. The debug
9100 version of the code includes the debug output trace mechanism and
9101 has a larger code and data size. Note that these values will vary
9102 depending on the efficiency of the compiler and the compiler
9103 options used during generation.
9104
9105 Previous Release (12_05_01)
9106 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
9107 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
9108 Current Release:
9109 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
9110 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
9111
9112 3) ASL Compiler, version X2034:
9113
9114 Now checks for (and generates an error if detected) the use of a
9115 Break or Continue statement without an enclosing While statement.
9116
9117
9118 Successfully generated the compiler with the Intel 64-bit C
9119 compiler.
9120
9121 ----------------------------------------
9122 Summary of changes for this label: 12_05_01
9123
9124 1) ACPI CA Core Subsystem:
9125
9126 The ACPI 2.0 CopyObject operator is fully implemented. This
9127 operator creates a new copy of an object (and is also used to
9128 bypass the "implicit conversion" mechanism of the Store operator.)
9129
9130 The ACPI 2.0 semantics for the SizeOf operator are fully
9131 implemented. The change is that performing a SizeOf on a
9132 reference object causes an automatic dereference of the object to
9133 tha actual value before the size is evaluated. This behavior was
9134 undefined in ACPI 1.0.
9135
9136 The ACPI 2.0 semantics for the Extended IRQ resource descriptor
9137 have been implemented. The interrupt polarity and mode are now
9138 independently set.
9139
9140 Fixed a problem where ASL Constants (Zero, One, Ones, Revision)
9141 appearing in Package objects were not properly converted to
9142 integers when the internal Package was converted to an external
9143 object (via the AcpiEvaluateObject interface.)
9144
9145 Fixed a problem with the namespace object deletion mechanism for
9146 objects created by control methods. There were two parts to this
9147 problem: 1) Objects created during the initialization phase method
9148 parse were not being deleted, and 2) The object owner ID mechanism
9149 to track objects was broken.
9150
9151 Fixed a problem where the use of the ASL Scope operator within a
9152 control method would result in an invalid opcode exception.
9153
9154 Fixed a problem introduced in the previous label where the buffer
9155 length required for the _PRT structure was not being returned
9156 correctly.
9157
9158 Code and Data Size: Current core subsystem library sizes are shown
9159 below. These are the code and data sizes for the acpica.lib
9160 produced by the Microsoft Visual C++ 6.0 compiler, and these
9161 values do not include any ACPI driver or OSPM code. The debug
9162 version of the code includes the debug output trace mechanism and
9163 has a larger code and data size. Note that these values will vary
9164 depending on the efficiency of the compiler and the compiler
9165 options used during generation.
9166
9167 Previous Release (11_20_01)
9168 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
9169 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
9170
9171 Current Release:
9172 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
9173 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
9174
9175 2) Linux:
9176
9177 Updated all files to apply cleanly against 2.4.16.
9178
9179 Added basic PCI Interrupt Routing Table (PRT) support for IA32
9180 (acpi_pci.c), and unified the PRT code for IA32 and IA64. This
9181 version supports both static and dyanmic PRT entries, but dynamic
9182 entries are treated as if they were static (not yet
9183 reconfigurable). Architecture- specific code to use this data is
9184 absent on IA32 but should be available shortly.
9185
9186 Changed the initialization sequence to start the ACPI interpreter
9187 (acpi_init) prior to initialization of the PCI driver (pci_init)
9188 in init/main.c. This ordering is required to support PRT and
9189 facilitate other (future) enhancement. A side effect is that the
9190 ACPI bus driver and certain device drivers can no longer be loaded
9191 as modules.
9192
9193 Modified the 'make menuconfig' options to allow PCI Interrupt
9194 Routing support to be included without the ACPI Bus and other
9195 device drivers.
9196
9197 3) ASL Compiler, version X2033:
9198
9199 Fixed some issues with the use of the new CopyObject and
9200 DataTableRegion operators. Both are fully functional.
9201
9202 ----------------------------------------
9203 Summary of changes for this label: 11_20_01
9204
9205 20 November 2001. Summary of changes for this release.
9206
9207 1) ACPI CA Core Subsystem:
9208
9209 Updated Index support to match ACPI 2.0 semantics. Storing a
9210 Integer, String, or Buffer to an Index of a Buffer will store only
9211 the least-significant byte of the source to the Indexed buffer
9212 byte. Multiple writes are not performed.
9213
9214 Fixed a problem where the access type used in an AccessAs ASL
9215 operator was not recorded correctly into the field object.
9216
9217 Fixed a problem where ASL Event objects were created in a
9218 signalled state. Events are now created in an unsignalled state.
9219
9220 The internal object cache is now purged after table loading and
9221 initialization to reduce the use of dynamic kernel memory -- on
9222 the assumption that object use is greatest during the parse phase
9223 of the entire table (versus the run-time use of individual control
9224 methods.)
9225
9226 ACPI 2.0 variable-length packages are now fully operational.
9227
9228 Code and Data Size: Code and Data optimizations have permitted new
9229 feature development with an actual reduction in the library size.
9230 Current core subsystem library sizes are shown below. These are
9231 the code and data sizes for the acpica.lib produced by the
9232 Microsoft Visual C++ 6.0 compiler, and these values do not include
9233 any ACPI driver or OSPM code. The debug version of the code
9234 includes the debug output trace mechanism and has a larger code
9235 and data size. Note that these values will vary depending on the
9236 efficiency of the compiler and the compiler options used during
9237 generation.
9238
9239 Previous Release (11_09_01):
9240 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
9241 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
9242
9243 Current Release:
9244 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
9245 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
9246
9247 2) Linux:
9248
9249 Enhanced the ACPI boot-time initialization code to allow the use
9250 of Local APIC tables for processor enumeration on IA-32, and to
9251 pave the way for a fully MPS-free boot (on SMP systems) in the
9252 near future. This functionality replaces
9253 arch/i386/kernel/acpitables.c, which was introduced in an earlier
9254 2.4.15-preX release. To enable this feature you must add
9255 "acpi_boot=on" to the kernel command line -- see the help entry
9256 for CONFIG_ACPI_BOOT for more information. An IA-64 release is in
9257 the works...
9258
9259 Restructured the configuration options to allow boot-time table
9260 parsing support without inclusion of the ACPI Interpreter (and
9261 other) code.
9262
9263 NOTE: This release does not include fixes for the reported events,
9264 power-down, and thermal passive cooling issues (coming soon).
9265
9266 3) ASL Compiler:
9267
9268 Added additional typechecking for Fields within restricted access
9269 Operation Regions. All fields within EC and CMOS regions must be
9270 declared with ByteAcc. All fields withing SMBus regions must be
9271 declared with the BufferAcc access type.
9272
9273 Fixed a problem where the listing file output of control methods
9274 no longer interleaved the actual AML code with the ASL source
9275 code.
9276
9277
9278
9279
9280 ----------------------------------------
9281 Summary of changes for this label: 11_09_01
9282
9283 1) ACPI CA Core Subsystem:
9284
9285 Implemented ACPI 2.0-defined support for writes to fields with a
9286 Buffer, String, or Integer source operand that is smaller than the
9287 target field. In these cases, the source operand is zero-extended
9288 to fill the target field.
9289
9290 Fixed a problem where a Field starting bit offset (within the
9291 parent operation region) was calculated incorrectly if the
9292
9293 alignment of the field differed from the access width. This
9294 affected CreateWordField, CreateDwordField, CreateQwordField, and
9295 possibly other fields that use the "AccessAny" keyword.
9296
9297 Fixed a problem introduced in the 11_02_01 release where indirect
9298 stores through method arguments did not operate correctly.
9299
9300 2) Linux:
9301
9302 Implemented boot-time ACPI table parsing support
9303 (CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code
9304 facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than
9305 legacy BIOS interfaces (e.g. MPS) for the configuration of system
9306 processors, memory, and interrupts during setup_arch(). Note that
9307 this patch does not include the required architecture-specific
9308 changes required to apply this information -- subsequent patches
9309 will be posted for both IA32 and IA64 to achieve this.
9310
9311 Added low-level sleep support for IA32 platforms, courtesy of Pat
9312 Mochel. This allows IA32 systems to transition to/from various
9313 sleeping states (e.g. S1, S3), although the lack of a centralized
9314 driver model and power-manageable drivers will prevent its
9315 (successful) use on most systems.
9316
9317 Revamped the ACPI 'menuconfig' layout: created new "ACPI Support"
9318 submenu, unified IA32 and IA64 options, added new "Boot using ACPI
9319 tables" option, etc.
9320
9321 Increased the default timeout for the EC driver from 1ms to 10ms
9322 (1000 cycles of 10us) to try to address AE_TIME errors during EC
9323 transactions.
9324
9325 ----------------------------------------
9326 Summary of changes for this label: 11_02_01
9327
9328 1) ACPI CA Core Subsystem:
9329
9330 ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access
9331 (QWordAcc keyword). All ACPI 2.0 64-bit support is now
9332 implemented.
9333
9334 OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required
9335 changes to support ACPI 2.0 Qword field access. Read/Write
9336 PciConfiguration(), Read/Write Memory(), and Read/Write Port() now
9337 accept an ACPI_INTEGER (64 bits) as the value parameter. Also,
9338 the value parameter for the address space handler interface is now
9339 an ACPI_INTEGER. OSL implementations of these interfaces must now
9340 handle the case where the Width parameter is 64.
9341
9342 Index Fields: Fixed a problem where unaligned bit assembly and
9343 disassembly for IndexFields was not supported correctly.
9344
9345 Index and Bank Fields: Nested Index and Bank Fields are now
9346 supported. During field access, a check is performed to ensure
9347 that the value written to an Index or Bank register is not out of
9348 the range of the register. The Index (or Bank) register is
9349 written before each access to the field data. Future support will
9350 include allowing individual IndexFields to be wider than the
9351 DataRegister width.
9352
9353 Fields: Fixed a problem where the AML interpreter was incorrectly
9354 attempting to write beyond the end of a Field/OpRegion. This was
9355 a boundary case that occurred when a DWORD field was written to a
9356 BYTE access OpRegion, forcing multiple writes and causing the
9357 interpreter to write one datum too many.
9358
9359 Fields: Fixed a problem with Field/OpRegion access where the
9360 starting bit address of a field was incorrectly calculated if the
9361 current access type was wider than a byte (WordAcc, DwordAcc, or
9362 QwordAcc).
9363
9364 Fields: Fixed a problem where forward references to individual
9365 FieldUnits (individual Field names within a Field definition) were
9366 not resolved during the AML table load.
9367
9368 Fields: Fixed a problem where forward references from a Field
9369 definition to the parent Operation Region definition were not
9370 resolved during the AML table load.
9371
9372 Fields: Duplicate FieldUnit names within a scope are now detected
9373 during AML table load.
9374
9375 Acpi Interfaces: Fixed a problem where the AcpiGetName() interface
9376 returned an incorrect name for the root node.
9377
9378 Code and Data Size: Code and Data optimizations have permitted new
9379 feature development with an actual reduction in the library size.
9380 Current core subsystem library sizes are shown below. These are
9381 the code and data sizes for the acpica.lib produced by the
9382 Microsoft Visual C++ 6.0 compiler, and these values do not include
9383 any ACPI driver or OSPM code. The debug version of the code
9384 includes the debug output trace mechanism and has a larger code
9385 and data size. Note that these values will vary depending on the
9386 efficiency of the compiler and the compiler options used during
9387 generation.
9388
9389 Previous Release (10_18_01):
9390 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
9391 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
9392
9393 Current Release:
9394 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
9395 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
9396
9397 2) Linux:
9398
9399 Improved /proc processor output (Pavel Machek) Re-added
9400 MODULE_LICENSE("GPL") to all modules.
9401
9402 3) ASL Compiler version X2030:
9403
9404 Duplicate FieldUnit names within a scope are now detected and
9405 flagged as errors.
9406
9407 4) Documentation:
9408
9409 Programmer Reference updated to reflect OSL and address space
9410 handler interface changes described above.
9411
9412 ----------------------------------------
9413 Summary of changes for this label: 10_18_01
9414
9415 ACPI CA Core Subsystem:
9416
9417 Fixed a problem with the internal object reference count mechanism
9418 that occasionally caused premature object deletion. This resolves
9419 all of the outstanding problem reports where an object is deleted
9420 in the middle of an interpreter evaluation. Although this problem
9421 only showed up in rather obscure cases, the solution to the
9422 problem involved an adjustment of all reference counts involving
9423 objects attached to namespace nodes.
9424
9425 Fixed a problem with Field support in the interpreter where
9426 writing to an aligned field whose length is an exact multiple (2
9427 or greater) of the field access granularity would cause an attempt
9428 to write beyond the end of the field.
9429
9430 The top level AML opcode execution functions within the
9431 interpreter have been renamed with a more meaningful and
9432 consistent naming convention. The modules exmonad.c and
9433 exdyadic.c were eliminated. New modules are exoparg1.c,
9434 exoparg2.c, exoparg3.c, and exoparg6.c.
9435
9436 Support for the ACPI 2.0 "Mid" ASL operator has been implemented.
9437
9438 Fixed a problem where the AML debugger was causing some internal
9439 objects to not be deleted during subsystem termination.
9440
9441 Fixed a problem with the external AcpiEvaluateObject interface
9442 where the subsystem would fault if the named object to be
9443 evaluated refered to a constant such as Zero, Ones, etc.
9444
9445 Fixed a problem with IndexFields and BankFields where the
9446 subsystem would fault if the index, data, or bank registers were
9447 not defined in the same scope as the field itself.
9448
9449 Added printf format string checking for compilers that support
9450 this feature. Corrected more than 50 instances of issues with
9451 format specifiers within invocations of ACPI_DEBUG_PRINT
9452 throughout the core subsystem code.
9453
9454 The ASL "Revision" operator now returns the ACPI support level
9455 implemented in the core - the value "2" since the ACPI 2.0 support
9456 is more than 50% implemented.
9457
9458 Enhanced the output of the AML debugger "dump namespace" command
9459 to output in a more human-readable form.
9460
9461 Current core subsystem library code sizes are shown below. These
9462
9463 are the code and data sizes for the acpica.lib produced by the
9464 Microsoft Visual C++ 6.0 compiler, and these values do not include
9465 any ACPI driver or OSPM code. The debug version of the code
9466 includes the full debug trace mechanism -- leading to a much
9467
9468 larger code and data size. Note that these values will vary
9469 depending on the efficiency of the compiler and the compiler
9470 options used during generation.
9471
9472 Previous Label (09_20_01):
9473 Non-Debug Version: 65K Code, 5K Data, 70K Total
9474 Debug Version: 138K Code, 58K Data, 196K Total
9475
9476 This Label:
9477
9478 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
9479 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
9480
9481 Linux:
9482
9483 Implemented a "Bad BIOS Blacklist" to track machines that have
9484 known ASL/AML problems.
9485
9486 Enhanced the /proc interface for the thermal zone driver and added
9487 support for _HOT (the critical suspend trip point). The 'info'
9488 file now includes threshold/policy information, and allows setting
9489 of _SCP (cooling preference) and _TZP (polling frequency) values
9490 to the 'info' file. Examples: "echo tzp=5 > info" sets the polling
9491 frequency to 5 seconds, and "echo scp=1 > info" sets the cooling
9492 preference to the passive/quiet mode (if supported by the ASL).
9493
9494 Implemented a workaround for a gcc bug that resuted in an OOPs
9495 when loading the control method battery driver.
9496
9497 ----------------------------------------
9498 Summary of changes for this label: 09_20_01
9499
9500 ACPI CA Core Subsystem:
9501
9502 The AcpiEnableEvent and AcpiDisableEvent interfaces have been
9503 modified to allow individual GPE levels to be flagged as wake-
9504 enabled (i.e., these GPEs are to remain enabled when the platform
9505 sleeps.)
9506
9507 The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now
9508 support wake-enabled GPEs. This means that upon entering the
9509 sleep state, all GPEs that are not wake-enabled are disabled.
9510 When leaving the sleep state, these GPEs are reenabled.
9511
9512 A local double-precision divide/modulo module has been added to
9513 enhance portability to OS kernels where a 64-bit math library is
9514 not available. The new module is "utmath.c".
9515
9516 Several optimizations have been made to reduce the use of CPU
9517 stack. Originally over 2K, the maximum stack usage is now below
9518 2K at 1860 bytes (1.82k)
9519
9520 Fixed a problem with the AcpiGetFirmwareTable interface where the
9521 root table pointer was not mapped into a logical address properly.
9522
9523 Fixed a problem where a NULL pointer was being dereferenced in the
9524 interpreter code for the ASL Notify operator.
9525
9526 Fixed a problem where the use of the ASL Revision operator
9527 returned an error. This operator now returns the current version
9528 of the ACPI CA core subsystem.
9529
9530 Fixed a problem where objects passed as control method parameters
9531 to AcpiEvaluateObject were always deleted at method termination.
9532 However, these objects may end up being stored into the namespace
9533 by the called method. The object reference count mechanism was
9534 applied to these objects instead of a force delete.
9535
9536 Fixed a problem where static strings or buffers (contained in the
9537 AML code) that are declared as package elements within the ASL
9538 code could cause a fault because the interpreter would attempt to
9539 delete them. These objects are now marked with the "static
9540 object" flag to prevent any attempt to delete them.
9541
9542 Implemented an interpreter optimization to use operands directly
9543 from the state object instead of extracting the operands to local
9544 variables. This reduces stack use and code size, and improves
9545 performance.
9546
9547 The module exxface.c was eliminated as it was an unnecessary extra
9548 layer of code.
9549
9550 Current core subsystem library code sizes are shown below. These
9551 are the code and data sizes for the acpica.lib produced by the
9552 Microsoft Visual C++ 6.0 compiler, and these values do not include
9553 any ACPI driver or OSPM code. The debug version of the code
9554 includes the full debug trace mechanism -- leading to a much
9555 larger code and data size. Note that these values will vary
9556 depending on the efficiency of the compiler and the compiler
9557 options used during generation.
9558
9559 Non-Debug Version: 65K Code, 5K Data, 70K Total
9560 (Previously 69K) Debug Version: 138K Code, 58K Data, 196K
9561 Total (Previously 195K)
9562
9563 Linux:
9564
9565 Support for ACPI 2.0 64-bit integers has been added. All ACPI
9566 Integer objects are now 64 bits wide
9567
9568 All Acpi data types and structures are now in lower case. Only
9569 Acpi macros are upper case for differentiation.
9570
9571 Documentation:
9572
9573 Changes to the external interfaces as described above.
9574
9575 ----------------------------------------
9576 Summary of changes for this label: 08_31_01
9577
9578 ACPI CA Core Subsystem:
9579
9580 A bug with interpreter implementation of the ASL Divide operator
9581 was found and fixed. The implicit function return value (not the
9582 explicit store operands) was returning the remainder instead of
9583 the quotient. This was a longstanding bug and it fixes several
9584 known outstanding issues on various platforms.
9585
9586 The ACPI_DEBUG_PRINT and function trace entry/exit macros have
9587 been further optimized for size. There are 700 invocations of the
9588 DEBUG_PRINT macro alone, so each optimization reduces the size of
9589 the debug version of the subsystem significantly.
9590
9591 A stack trace mechanism has been implemented. The maximum stack
9592 usage is about 2K on 32-bit platforms. The debugger command "stat
9593 stack" will display the current maximum stack usage.
9594
9595 All public symbols and global variables within the subsystem are
9596 now prefixed with the string "Acpi". This keeps all of the
9597 symbols grouped together in a kernel map, and avoids conflicts
9598 with other kernel subsystems.
9599
9600 Most of the internal fixed lookup tables have been moved into the
9601 code segment via the const operator.
9602
9603 Several enhancements have been made to the interpreter to both
9604 reduce the code size and improve performance.
9605
9606 Current core subsystem library code sizes are shown below. These
9607 are the code and data sizes for the acpica.lib produced by the
9608 Microsoft Visual C++ 6.0 compiler, and these values do not include
9609 any ACPI driver or OSPM code. The debug version of the code
9610 includes the full debug trace mechanism which contains over 700
9611 invocations of the DEBUG_PRINT macro, 500 function entry macro
9612 invocations, and over 900 function exit macro invocations --
9613 leading to a much larger code and data size. Note that these
9614 values will vary depending on the efficiency of the compiler and
9615 the compiler options used during generation.
9616
9617 Non-Debug Version: 64K Code, 5K Data, 69K Total
9618 Debug Version: 137K Code, 58K Data, 195K Total
9619
9620 Linux:
9621
9622 Implemented wbinvd() macro, pending a kernel-wide definition.
9623
9624 Fixed /proc/acpi/event to handle poll() and short reads.
9625
9626 ASL Compiler, version X2026:
9627
9628 Fixed a problem introduced in the previous label where the AML
9629
9630 code emitted for package objects produced packages with zero
9631 length.
9632
9633 ----------------------------------------
9634 Summary of changes for this label: 08_16_01
9635
9636 ACPI CA Core Subsystem:
9637
9638 The following ACPI 2.0 ASL operators have been implemented in the
9639 AML interpreter (These are already supported by the Intel ASL
9640 compiler): ToDecimalString, ToHexString, ToString, ToInteger, and
9641 ToBuffer. Support for 64-bit AML constants is implemented in the
9642 AML parser, debugger, and disassembler.
9643
9644 The internal memory tracking mechanism (leak detection code) has
9645 been upgraded to reduce the memory overhead (a separate tracking
9646 block is no longer allocated for each memory allocation), and now
9647 supports all of the internal object caches.
9648
9649 The data structures and code for the internal object caches have
9650 been coelesced and optimized so that there is a single cache and
9651 memory list data structure and a single group of functions that
9652 implement generic cache management. This has reduced the code
9653 size in both the debug and release versions of the subsystem.
9654
9655 The DEBUG_PRINT macro(s) have been optimized for size and replaced
9656 by ACPI_DEBUG_PRINT. The syntax for this macro is slightly
9657 different, because it generates a single call to an internal
9658 function. This results in a savings of about 90 bytes per
9659 invocation, resulting in an overall code and data savings of about
9660 16% in the debug version of the subsystem.
9661
9662 Linux:
9663
9664 Fixed C3 disk corruption problems and re-enabled C3 on supporting
9665 machines.
9666
9667 Integrated low-level sleep code by Patrick Mochel.
9668
9669 Further tweaked source code Linuxization.
9670
9671 Other minor fixes.
9672
9673 ASL Compiler:
9674
9675 Support for ACPI 2.0 variable length packages is fixed/completed.
9676
9677 Fixed a problem where the optional length parameter for the ACPI
9678 2.0 ToString operator.
9679
9680 Fixed multiple extraneous error messages when a syntax error is
9681 detected within the declaration line of a control method.
9682
9683 ----------------------------------------
9684 Summary of changes for this label: 07_17_01
9685
9686 ACPI CA Core Subsystem:
9687
9688 Added a new interface named AcpiGetFirmwareTable to obtain any
9689 ACPI table via the ACPI signature. The interface can be called at
9690 any time during kernel initialization, even before the kernel
9691 virtual memory manager is initialized and paging is enabled. This
9692 allows kernel subsystems to obtain ACPI tables very early, even
9693 before the ACPI CA subsystem is initialized.
9694
9695 Fixed a problem where Fields defined with the AnyAcc attribute
9696 could be resolved to the incorrect address under the following
9697 conditions: 1) the field width is larger than 8 bits and 2) the
9698 parent operation region is not defined on a DWORD boundary.
9699
9700 Fixed a problem where the interpreter is not being locked during
9701 namespace initialization (during execution of the _INI control
9702 methods), causing an error when an attempt is made to release it
9703 later.
9704
9705 ACPI 2.0 support in the AML Interpreter has begun and will be
9706 ongoing throughout the rest of this year. In this label, The Mod
9707 operator is implemented.
9708
9709 Added a new data type to contain full PCI addresses named
9710 ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device,
9711 and Function values.
9712
9713 Linux:
9714
9715 Enhanced the Linux version of the source code to change most
9716 capitalized ACPI type names to lowercase. For example, all
9717 instances of ACPI_STATUS are changed to acpi_status. This will
9718 result in a large diff, but the change is strictly cosmetic and
9719 aligns the CA code closer to the Linux coding standard.
9720
9721 OSL Interfaces:
9722
9723 The interfaces to the PCI configuration space have been changed to
9724 add the PCI Segment number and to split the single 32-bit combined
9725 DeviceFunction field into two 16-bit fields. This was
9726 accomplished by moving the four values that define an address in
9727 PCI configuration space (segment, bus, device, and function) to
9728 the new ACPI_PCI_ID structure.
9729
9730 The changes to the PCI configuration space interfaces led to a
9731 reexamination of the complete set of address space access
9732 interfaces for PCI, I/O, and Memory. The previously existing 18
9733 interfaces have proven difficult to maintain (any small change
9734 must be propagated across at least 6 interfaces) and do not easily
9735 allow for future expansion to 64 bits if necessary. Also, on some
9736 systems, it would not be appropriate to demultiplex the access
9737 width (8, 16, 32,or 64) before calling the OSL if the
9738 corresponding native OS interfaces contain a similar access width
9739 parameter. For these reasons, the 18 address space interfaces
9740 have been replaced by these 6 new ones:
9741
9742 AcpiOsReadPciConfiguration
9743 AcpiOsWritePciConfiguration
9744 AcpiOsReadMemory
9745 AcpiOsWriteMemory
9746 AcpiOsReadPort
9747 AcpiOsWritePort
9748
9749 Added a new interface named AcpiOsGetRootPointer to allow the OSL
9750 to perform the platform and/or OS-specific actions necessary to
9751 obtain the ACPI RSDP table pointer. On IA-32 platforms, this
9752 interface will simply call down to the CA core to perform the low-
9753 memory search for the table. On IA-64, the RSDP is obtained from
9754 EFI. Migrating this interface to the OSL allows the CA core to
9755
9756 remain OS and platform independent.
9757
9758 Added a new interface named AcpiOsSignal to provide a generic
9759 "function code and pointer" interface for various miscellaneous
9760 signals and notifications that must be made to the host OS. The
9761 first such signals are intended to support the ASL Fatal and
9762 Breakpoint operators. In the latter case, the AcpiOsBreakpoint
9763 interface has been obsoleted.
9764
9765 The definition of the AcpiFormatException interface has been
9766 changed to simplify its use. The caller no longer must supply a
9767 buffer to the call; A pointer to a const string is now returned
9768 directly. This allows the call to be easily used in printf
9769 statements, etc. since the caller does not have to manage a local
9770 buffer.
9771
9772
9773 ASL Compiler, Version X2025:
9774
9775 The ACPI 2.0 Switch/Case/Default operators have been implemented
9776 and are fully functional. They will work with all ACPI 1.0
9777 interpreters, since the operators are simply translated to If/Else
9778 pairs.
9779
9780 The ACPI 2.0 ElseIf operator is implemented and will also work
9781 with 1.0 interpreters, for the same reason.
9782
9783 Implemented support for ACPI 2.0 variable-length packages. These
9784 packages have a separate opcode, and their size is determined by
9785 the interpreter at run-time.
9786
9787 Documentation The ACPI CA Programmer Reference has been updated to
9788 reflect the new interfaces and changes to existing interfaces.
9789
9790 ------------------------------------------
9791 Summary of changes for this label: 06_15_01
9792
9793 ACPI CA Core Subsystem:
9794
9795 Fixed a problem where a DWORD-accessed field within a Buffer
9796 object would get its byte address inadvertently rounded down to
9797 the nearest DWORD. Buffers are always Byte-accessible.
9798
9799 ASL Compiler, version X2024:
9800
9801 Fixed a problem where the Switch() operator would either fault or
9802 hang the compiler. Note however, that the AML code for this ACPI
9803 2.0 operator is not yet implemented.
9804
9805 Compiler uses the new AcpiOsGetTimer interface to obtain compile
9806 timings.
9807
9808 Implementation of the CreateField operator automatically converts
9809 a reference to a named field within a resource descriptor from a
9810 byte offset to a bit offset if required.
9811
9812 Added some missing named fields from the resource descriptor
9813 support. These are the names that are automatically created by the
9814 compiler to reference fields within a descriptor. They are only
9815 valid at compile time and are not passed through to the AML
9816 interpreter.
9817
9818 Resource descriptor named fields are now typed as Integers and
9819 subject to compile-time typechecking when used in expressions.
9820
9821 ------------------------------------------
9822 Summary of changes for this label: 05_18_01
9823
9824 ACPI CA Core Subsystem:
9825
9826 Fixed a couple of problems in the Field support code where bits
9827 from adjacent fields could be returned along with the proper field
9828 bits. Restructured the field support code to improve performance,
9829 readability and maintainability.
9830
9831 New DEBUG_PRINTP macro automatically inserts the procedure name
9832 into the output, saving hundreds of copies of procedure name
9833 strings within the source, shrinking the memory footprint of the
9834 debug version of the core subsystem.
9835
9836 Source Code Structure:
9837
9838 The source code directory tree was restructured to reflect the
9839 current organization of the component architecture. Some files
9840 and directories have been moved and/or renamed.
9841
9842 Linux:
9843
9844 Fixed leaking kacpidpc processes.
9845
9846 Fixed queueing event data even when /proc/acpi/event is not
9847 opened.
9848
9849 ASL Compiler, version X2020:
9850
9851 Memory allocation performance enhancement - over 24X compile time
9852 improvement on large ASL files. Parse nodes and namestring
9853 buffers are now allocated from a large internal compiler buffer.
9854
9855 The temporary .SRC file is deleted unless the "-s" option is
9856 specified
9857
9858 The "-d" debug output option now sends all output to the .DBG file
9859 instead of the console.
9860
9861 "External" second parameter is now optional
9862
9863 "ElseIf" syntax now properly allows the predicate
9864
9865 Last operand to "Load" now recognized as a Target operand
9866
9867 Debug object can now be used anywhere as a normal object.
9868
9869 ResourceTemplate now returns an object of type BUFFER
9870
9871 EISAID now returns an object of type INTEGER
9872
9873 "Index" now works with a STRING operand
9874
9875 "LoadTable" now accepts optional parameters
9876
9877 "ToString" length parameter is now optional
9878
9879 "Interrupt (ResourceType," parse error fixed.
9880
9881 "Register" with a user-defined region space parse error fixed
9882
9883 Escaped backslash at the end of a string ("\\") scan/parse error
9884 fixed
9885
9886 "Revision" is now an object of type INTEGER.
9887
9888
9889
9890 ------------------------------------------
9891 Summary of changes for this label: 05_02_01
9892
9893 Linux:
9894
9895 /proc/acpi/event now blocks properly.
9896
9897 Removed /proc/sys/acpi. You can still dump your DSDT from
9898 /proc/acpi/dsdt.
9899
9900 ACPI CA Core Subsystem:
9901
9902 Fixed a problem introduced in the previous label where some of the
9903 "small" resource descriptor types were not recognized.
9904
9905 Improved error messages for the case where an ASL Field is outside
9906 the range of the parent operation region.
9907
9908 ASL Compiler, version X2018:
9909
9910
9911 Added error detection for ASL Fields that extend beyond the length
9912 of the parent operation region (only if the length of the region
9913 is known at compile time.) This includes fields that have a
9914 minimum access width that is smaller than the parent region, and
9915 individual field units that are partially or entirely beyond the
9916 extent of the parent.
9917
9918
9919
9920 ------------------------------------------
9921 Summary of changes for this label: 04_27_01
9922
9923 ACPI CA Core Subsystem:
9924
9925 Fixed a problem where the namespace mutex could be released at the
9926 wrong time during execution of AcpiRemoveAddressSpaceHandler.
9927
9928 Added optional thread ID output for debug traces, to simplify
9929 debugging of multiple threads. Added context switch notification
9930 when the debug code realizes that a different thread is now
9931 executing ACPI code.
9932
9933 Some additional external data types have been prefixed with the
9934 string "ACPI_" for consistency. This may effect existing code.
9935 The data types affected are the external callback typedefs - e.g.,
9936
9937 WALK_CALLBACK becomes ACPI_WALK_CALLBACK.
9938
9939 Linux:
9940
9941 Fixed an issue with the OSL semaphore implementation where a
9942 thread was waking up with an error from receiving a SIGCHLD
9943 signal.
9944
9945 Linux version of ACPI CA now uses the system C library for string
9946 manipulation routines instead of a local implementation.
9947
9948 Cleaned up comments and removed TBDs.
9949
9950 ASL Compiler, version X2017:
9951
9952 Enhanced error detection and reporting for all file I/O
9953 operations.
9954
9955 Documentation:
9956
9957 Programmer Reference updated to version 1.06.
9958
9959
9960
9961 ------------------------------------------
9962 Summary of changes for this label: 04_13_01
9963
9964 ACPI CA Core Subsystem:
9965
9966 Restructured support for BufferFields and RegionFields.
9967 BankFields support is now fully operational. All known 32-bit
9968 limitations on field sizes have been removed. Both BufferFields
9969 and (Operation) RegionFields are now supported by the same field
9970 management code.
9971
9972 Resource support now supports QWORD address and IO resources. The
9973 16/32/64 bit address structures and the Extended IRQ structure
9974 have been changed to properly handle Source Resource strings.
9975
9976 A ThreadId of -1 is now used to indicate a "mutex not acquired"
9977 condition internally and must never be returned by AcpiOsThreadId.
9978 This reserved value was changed from 0 since Unix systems allow a
9979 thread ID of 0.
9980
9981 Linux:
9982
9983 Driver code reorganized to enhance portability
9984
9985 Added a kernel configuration option to control ACPI_DEBUG
9986
9987 Fixed the EC driver to honor _GLK.
9988
9989 ASL Compiler, version X2016:
9990
9991 Fixed support for the "FixedHw" keyword. Previously, the FixedHw
9992 address space was set to 0, not 0x7f as it should be.
9993
9994 ------------------------------------------
9995 Summary of changes for this label: 03_13_01
9996
9997 ACPI CA Core Subsystem:
9998
9999 During ACPI initialization, the _SB_._INI method is now run if
10000 present.
10001
10002 Notify handler fix - notifies are deferred until the parent method
10003 completes execution. This fixes the "mutex already acquired"
10004 issue seen occasionally.
10005
10006 Part of the "implicit conversion" rules in ACPI 2.0 have been
10007 found to cause compatibility problems with existing ASL/AML. The
10008 convert "result-to-target-type" implementation has been removed
10009 for stores to method Args and Locals. Source operand conversion
10010 is still fully implemented. Possible changes to ACPI 2.0
10011 specification pending.
10012
10013 Fix to AcpiRsCalculatePciRoutingTableLength to return correct
10014 length.
10015
10016 Fix for compiler warnings for 64-bit compiles.
10017
10018 Linux:
10019
10020 /proc output aligned for easier parsing.
10021
10022 Release-version compile problem fixed.
10023
10024 New kernel configuration options documented in Configure.help.
10025
10026 IBM 600E - Fixed Sleep button may generate "Invalid <NULL>
10027 context" message.
10028
10029 OSPM:
10030
10031 Power resource driver integrated with bus manager.
10032
10033 Fixed kernel fault during active cooling for thermal zones.
10034
10035 Source Code:
10036
10037 The source code tree has been restructured.
10038
10039
10040
10041 ------------------------------------------
10042 Summary of changes for this label: 03_02_01
10043
10044 Linux OS Services Layer (OSL):
10045
10046 Major revision of all Linux-specific code.
10047
10048 Modularized all ACPI-specific drivers.
10049
10050 Added new thermal zone and power resource drivers.
10051
10052 Revamped /proc interface (new functionality is under /proc/acpi).
10053
10054 New kernel configuration options.
10055
10056 Linux known issues:
10057
10058 New kernel configuration options not documented in Configure.help
10059 yet.
10060
10061
10062 Module dependencies not currently implemented. If used, they
10063 should be loaded in this order: busmgr, power, ec, system,
10064 processor, battery, ac_adapter, button, thermal.
10065
10066 Modules will not load if CONFIG_MODVERSION is set.
10067
10068 IBM 600E - entering S5 may reboot instead of shutting down.
10069
10070 IBM 600E - Sleep button may generate "Invalid <NULL> context"
10071 message.
10072
10073 Some systems may fail with "execution mutex already acquired"
10074 message.
10075
10076 ACPI CA Core Subsystem:
10077
10078 Added a new OSL Interface, AcpiOsGetThreadId. This was required
10079 for the deadlock detection code. Defined to return a non-zero, 32-
10080 bit thread ID for the currently executing thread. May be a non-
10081 zero constant integer on single-thread systems.
10082
10083 Implemented deadlock detection for internal subsystem mutexes. We
10084 may add conditional compilation for this code (debug only) later.
10085
10086 ASL/AML Mutex object semantics are now fully supported. This
10087 includes multiple acquires/releases by owner and support for the
10088
10089 Mutex SyncLevel parameter.
10090
10091 A new "Force Release" mechanism automatically frees all ASL
10092 Mutexes that have been acquired but not released when a thread
10093 exits the interpreter. This forces conformance to the ACPI spec
10094 ("All mutexes must be released when an invocation exits") and
10095 prevents deadlocked ASL threads. This mechanism can be expanded
10096 (later) to monitor other resource acquisitions if OEM ASL code
10097 continues to misbehave (which it will).
10098
10099 Several new ACPI exception codes have been added for the Mutex
10100 support.
10101
10102 Recursive method calls are now allowed and supported (the ACPI
10103 spec does in fact allow recursive method calls.) The number of
10104 recursive calls is subject to the restrictions imposed by the
10105 SERIALIZED method keyword and SyncLevel (ACPI 2.0) method
10106 parameter.
10107
10108 Implemented support for the SyncLevel parameter for control
10109 methods (ACPI 2.0 feature)
10110
10111 Fixed a deadlock problem when multiple threads attempted to use
10112 the interpreter.
10113
10114 Fixed a problem where the string length of a String package
10115 element was not always set in a package returned from
10116 AcpiEvaluateObject.
10117
10118 Fixed a problem where the length of a String package element was
10119 not always included in the length of the overall package returned
10120 from AcpiEvaluateObject.
10121
10122 Added external interfaces (Acpi*) to the ACPI debug memory
10123 manager. This manager keeps a list of all outstanding
10124 allocations, and can therefore detect memory leaks and attempts to
10125 free memory blocks more than once. Useful for code such as the
10126 power manager, etc. May not be appropriate for device drivers.
10127 Performance with the debug code enabled is slow.
10128
10129 The ACPI Global Lock is now an optional hardware element.
10130
10131 ASL Compiler Version X2015:
10132
10133 Integrated changes to allow the compiler to be generated on
10134 multiple platforms.
10135
10136 Linux makefile added to generate the compiler on Linux
10137
10138 Source Code:
10139
10140 All platform-specific headers have been moved to their own
10141 subdirectory, Include/Platform.
10142
10143 New source file added, Interpreter/ammutex.c
10144
10145 New header file, Include/acstruct.h
10146
10147 Documentation:
10148
10149 The programmer reference has been updated for the following new
10150 interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree
10151
10152 ------------------------------------------
10153 Summary of changes for this label: 02_08_01
10154
10155 Core ACPI CA Subsystem: Fixed a problem where an error was
10156 incorrectly returned if the return resource buffer was larger than
10157 the actual data (in the resource interfaces).
10158
10159 References to named objects within packages are resolved to the
10160
10161 full pathname string before packages are returned directly (via
10162 the AcpiEvaluateObject interface) or indirectly via the resource
10163 interfaces.
10164
10165 Linux OS Services Layer (OSL):
10166
10167 Improved /proc battery interface.
10168
10169
10170 Added C-state debugging output and other miscellaneous fixes.
10171
10172 ASL Compiler Version X2014:
10173
10174 All defined method arguments can now be used as local variables,
10175 including the ones that are not actually passed in as parameters.
10176 The compiler tracks initialization of the arguments and issues an
10177 exception if they are used without prior assignment (just like
10178 locals).
10179
10180 The -o option now specifies a filename prefix that is used for all
10181 output files, including the AML output file. Otherwise, the
10182 default behavior is as follows: 1) the AML goes to the file
10183 specified in the DSDT. 2) all other output files use the input
10184 source filename as the base.
10185
10186 ------------------------------------------
10187 Summary of changes for this label: 01_25_01
10188
10189 Core ACPI CA Subsystem: Restructured the implementation of object
10190 store support within the interpreter. This includes support for
10191 the Store operator as well as any ASL operators that include a
10192 target operand.
10193
10194 Partially implemented support for Implicit Result-to-Target
10195 conversion. This is when a result object is converted on the fly
10196 to the type of an existing target object. Completion of this
10197 support is pending further analysis of the ACPI specification
10198 concerning this matter.
10199
10200 CPU-specific code has been removed from the subsystem (hardware
10201 directory).
10202
10203 New Power Management Timer functions added
10204
10205 Linux OS Services Layer (OSL): Moved system state transition code
10206 to the core, fixed it, and modified Linux OSL accordingly.
10207
10208 Fixed C2 and C3 latency calculations.
10209
10210
10211 We no longer use the compilation date for the version message on
10212 initialization, but retrieve the version from AcpiGetSystemInfo().
10213
10214 Incorporated for fix Sony VAIO machines.
10215
10216 Documentation: The Programmer Reference has been updated and
10217 reformatted.
10218
10219
10220 ASL Compiler: Version X2013: Fixed a problem where the line
10221 numbering and error reporting could get out of sync in the
10222 presence of multiple include files.
10223
10224 ------------------------------------------
10225 Summary of changes for this label: 01_15_01
10226
10227 Core ACPI CA Subsystem:
10228
10229 Implemented support for type conversions in the execution of the
10230 ASL Concatenate operator (The second operand is converted to
10231 match the type of the first operand before concatenation.)
10232
10233 Support for implicit source operand conversion is partially
10234 implemented. The ASL source operand types Integer, Buffer, and
10235 String are freely interchangeable for most ASL operators and are
10236 converted by the interpreter on the fly as required. Implicit
10237 Target operand conversion (where the result is converted to the
10238 target type before storing) is not yet implemented.
10239
10240 Support for 32-bit and 64-bit BCD integers is implemented.
10241
10242 Problem fixed where a field read on an aligned field could cause a
10243 read past the end of the field.
10244
10245 New exception, AE_AML_NO_RETURN_VALUE, is returned when a method
10246 does not return a value, but the caller expects one. (The ASL
10247 compiler flags this as a warning.)
10248
10249 ASL Compiler:
10250
10251 Version X2011:
10252 1. Static typechecking of all operands is implemented. This
10253 prevents the use of invalid objects (such as using a Package where
10254 an Integer is required) at compile time instead of at interpreter
10255 run-time.
10256 2. The ASL source line is printed with ALL errors and warnings.
10257 3. Bug fix for source EOF without final linefeed.
10258 4. Debug option is split into a parse trace and a namespace trace.
10259 5. Namespace output option (-n) includes initial values for
10260 integers and strings.
10261 6. Parse-only option added for quick syntax checking.
10262 7. Compiler checks for duplicate ACPI name declarations
10263
10264 Version X2012:
10265 1. Relaxed typechecking to allow interchangeability between
10266 strings, integers, and buffers. These types are now converted by
10267 the interpreter at runtime.
10268 2. Compiler reports time taken by each internal subsystem in the
10269 debug output file.
10270
10271
10272 ------------------------------------------
10273 Summary of changes for this label: 12_14_00
10274
10275 ASL Compiler:
10276
10277 This is the first official release of the compiler. Since the
10278 compiler requires elements of the Core Subsystem, this label
10279 synchronizes everything.
10280
10281 ------------------------------------------
10282 Summary of changes for this label: 12_08_00
10283
10284
10285 Fixed a problem where named references within the ASL definition
10286 of both OperationRegions and CreateXXXFields did not work
10287 properly. The symptom was an AE_AML_OPERAND_TYPE during
10288 initialization of the region/field. This is similar (but not
10289 related internally) to the problem that was fixed in the last
10290 label.
10291
10292 Implemented both 32-bit and 64-bit support for the BCD ASL
10293 functions ToBCD and FromBCD.
10294
10295 Updated all legal headers to include "2000" in the copyright
10296 years.
10297
10298 ------------------------------------------
10299 Summary of changes for this label: 12_01_00
10300
10301 Fixed a problem where method invocations within the ASL definition
10302 of both OperationRegions and CreateXXXFields did not work
10303 properly. The symptom was an AE_AML_OPERAND_TYPE during
10304 initialization of the region/field:
10305
10306 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments
10307 [DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s)
10308 (0x3005)
10309
10310 Fixed a problem where operators with more than one nested
10311 subexpression would fail. The symptoms were varied, by mostly
10312 AE_AML_OPERAND_TYPE errors. This was actually a rather serious
10313 problem that has gone unnoticed until now.
10314
10315 Subtract (Add (1,2), Multiply (3,4))
10316
10317 Fixed a problem where AcpiGetHandle didn't quite get fixed in the
10318 previous build (The prefix part of a relative path was handled
10319 incorrectly).
10320
10321 Fixed a problem where Operation Region initialization failed if
10322 the operation region name was a "namepath" instead of a simple
10323 "nameseg". Symptom was an AE_NO_OPERAND error.
10324
10325 Fixed a problem where an assignment to a local variable via the
10326 indirect RefOf mechanism only worked for the first such
10327 assignment. Subsequent assignments were ignored.
10328
10329 ------------------------------------------
10330 Summary of changes for this label: 11_15_00
10331
10332 ACPI 2.0 table support with backwards support for ACPI 1.0 and the
10333 0.71 extensions. Note: although we can read ACPI 2.0 BIOS tables,
10334 the AML interpreter does NOT have support for the new 2.0 ASL
10335 grammar terms at this time.
10336
10337 All ACPI hardware access is via the GAS structures in the ACPI 2.0
10338 FADT.
10339
10340 All physical memory addresses across all platforms are now 64 bits
10341 wide. Logical address width remains dependent on the platform
10342 (i.e., "void *").
10343
10344 AcpiOsMapMemory interface changed to a 64-bit physical address.
10345
10346 The AML interpreter integer size is now 64 bits, as per the ACPI
10347 2.0 specification.
10348
10349 For backwards compatibility with ACPI 1.0, ACPI tables with a
10350 revision number less than 2 use 32-bit integers only.
10351
10352 Fixed a problem where the evaluation of OpRegion operands did not
10353 always resolve them to numbers properly.
10354
10355 ------------------------------------------
10356 Summary of changes for this label: 10_20_00
10357
10358 Fix for CBN_._STA issue. This fix will allow correct access to
10359 CBN_ OpRegions when the _STA returns 0x8.
10360
10361 Support to convert ACPI constants (Ones, Zeros, One) to actual
10362 values before a package object is returned
10363
10364 Fix for method call as predicate to if/while construct causing
10365 incorrect if/while behavior
10366
10367 Fix for Else block package lengths sometimes calculated wrong (if
10368 block > 63 bytes)
10369
10370 Fix for Processor object length field, was always zero
10371
10372 Table load abort if FACP sanity check fails
10373
10374 Fix for problem with Scope(name) if name already exists
10375
10376 Warning emitted if a named object referenced cannot be found
10377 (resolved) during method execution.
10378
10379
10380
10381
10382
10383 ------------------------------------------
10384 Summary of changes for this label: 9_29_00
10385
10386 New table initialization interfaces: AcpiInitializeSubsystem no
10387 longer has any parameters AcpiFindRootPointer - Find the RSDP (if
10388 necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP-
10389 >RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by
10390 AcpiLoadTables
10391
10392 Note: These interface changes require changes to all existing OSDs
10393
10394 The PCI_Config default address space handler is always installed
10395 at the root namespace object.
10396
10397 -------------------------------------------
10398 Summary of changes for this label: 09_15_00
10399
10400 The new initialization architecture is implemented. New
10401 interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize)
10402 AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace
10403
10404 (Namespace is automatically loaded when a table is loaded)
10405
10406 The ACPI_OPERAND_OBJECT has been optimized to shrink its size from
10407 52 bytes to 32 bytes. There is usually one of these for every
10408 namespace object, so the memory savings is significant.
10409
10410 Implemented just-in-time evaluation of the CreateField operators.
10411
10412 Bug fixes for IA-64 support have been integrated.
10413
10414 Additional code review comments have been implemented
10415
10416 The so-called "third pass parse" has been replaced by a final walk
10417 through the namespace to initialize all operation regions (address
10418 spaces) and fields that have not yet been initialized during the
10419 execution of the various _INI and REG methods.
10420
10421 New file - namespace/nsinit.c
10422
10423 -------------------------------------------
10424 Summary of changes for this label: 09_01_00
10425
10426 Namespace manager data structures have been reworked to change the
10427 primary object from a table to a single object. This has
10428 resulted in dynamic memory savings of 3X within the namespace and
10429 2X overall in the ACPI CA subsystem.
10430
10431 Fixed problem where the call to AcpiEvFindPciRootBuses was
10432 inadvertently left commented out.
10433
10434 Reduced the warning count when generating the source with the GCC
10435 compiler.
10436
10437 Revision numbers added to each module header showing the
10438 SourceSafe version of the file. Please refer to this version
10439 number when giving us feedback or comments on individual modules.
10440
10441 The main object types within the subsystem have been renamed to
10442 clarify their purpose:
10443
10444 ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT
10445 ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT
10446 ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE
10447
10448 NOTE: no changes to the initialization sequence are included in
10449 this label.
10450
10451 -------------------------------------------
10452 Summary of changes for this label: 08_23_00
10453
10454 Fixed problem where TerminateControlMethod was being called
10455 multiple times per method
10456
10457 Fixed debugger problem where single stepping caused a semaphore to
10458 be oversignalled
10459
10460 Improved performance through additional parse object caching -
10461 added ACPI_EXTENDED_OP type
10462
10463 -------------------------------------------
10464 Summary of changes for this label: 08_10_00
10465
10466 Parser/Interpreter integration: Eliminated the creation of
10467 complete parse trees for ACPI tables and control methods.
10468 Instead, parse subtrees are created and then deleted as soon as
10469 they are processed (Either entered into the namespace or executed
10470 by the interpreter). This reduces the use of dynamic kernel
10471 memory significantly. (about 10X)
10472
10473 Exception codes broken into classes and renumbered. Be sure to
10474 recompile all code that includes acexcep.h. Hopefully we won't
10475 have to renumber the codes again now that they are split into
10476 classes (environment, programmer, AML code, ACPI table, and
10477 internal).
10478
10479 Fixed some additional alignment issues in the Resource Manager
10480 subcomponent
10481
10482 Implemented semaphore tracking in the AcpiExec utility, and fixed
10483 several places where mutexes/semaphores were being unlocked
10484 without a corresponding lock operation. There are no known
10485 semaphore or mutex "leaks" at this time.
10486
10487 Fixed the case where an ASL Return operator is used to return an
10488 unnamed package.
10489
10490 -------------------------------------------
10491 Summary of changes for this label: 07_28_00
10492
10493 Fixed a problem with the way addresses were calculated in
10494 AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem
10495 manifested itself when a Field was created with WordAccess or
10496 DwordAccess, but the field unit defined within the Field was less
10497
10498 than a Word or Dword.
10499
10500 Fixed a problem in AmlDumpOperands() module's loop to pull
10501 operands off of the operand stack to display information. The
10502 problem manifested itself as a TLB error on 64-bit systems when
10503 accessing an operand stack with two or more operands.
10504
10505 Fixed a problem with the PCI configuration space handlers where
10506 context was getting confused between accesses. This required a
10507 change to the generic address space handler and address space
10508 setup definitions. Handlers now get both a global handler context
10509 (this is the one passed in by the user when executing
10510 AcpiInstallAddressSpaceHandler() and a specific region context
10511 that is unique to each region (For example, the _ADR, _SEG and
10512 _BBN values associated with a specific region). The generic
10513 function definitions have changed to the following:
10514
10515 typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function,
10516 UINT32 Address, UINT32 BitWidth, UINT32 *Value, void
10517 *HandlerContext, // This used to be void *Context void
10518 *RegionContext); // This is an additional parameter
10519
10520 typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE
10521 RegionHandle, UINT32 Function, void *HandlerContext, void
10522 **RegionContext); // This used to be **ReturnContext
10523
10524 -------------------------------------------
10525 Summary of changes for this label: 07_21_00
10526
10527 Major file consolidation and rename. All files within the
10528 interpreter have been renamed as well as most header files. This
10529 was done to prevent collisions with existing files in the host
10530 OSs -- filenames such as "config.h" and "global.h" seem to be
10531 quite common. The VC project files have been updated. All
10532 makefiles will require modification.
10533
10534 The parser/interpreter integration continues in Phase 5 with the
10535 implementation of a complete 2-pass parse (the AML is parsed
10536 twice) for each table; This avoids the construction of a huge
10537 parse tree and therefore reduces the amount of dynamic memory
10538 required by the subsystem. Greater use of the parse object cache
10539 means that performance is unaffected.
10540
10541 Many comments from the two code reviews have been rolled in.
10542
10543 The 64-bit alignment support is complete.
10544
10545 -------------------------------------------
10546 Summary of changes for this label: 06_30_00
10547
10548 With a nod and a tip of the hat to the technology of yesteryear,
10549 we've added support in the source code for 80 column output
10550 devices. The code is now mostly constrained to 80 columns or
10551 less to support environments and editors that 1) cannot display
10552 or print more than 80 characters on a single line, and 2) cannot
10553 disable line wrapping.
10554
10555 A major restructuring of the namespace data structure has been
10556 completed. The result is 1) cleaner and more
10557 understandable/maintainable code, and 2) a significant reduction
10558 in the dynamic memory requirement for each named ACPI object
10559 (almost half).
10560
10561 -------------------------------------------
10562 Summary of changes for this label: 06_23_00
10563
10564 Linux support has been added. In order to obtain approval to get
10565 the ACPI CA subsystem into the Linux kernel, we've had to make
10566 quite a few changes to the base subsystem that will affect all
10567 users (all the changes are generic and OS- independent). The
10568 effects of these global changes have been somewhat far reaching.
10569 Files have been merged and/or renamed and interfaces have been
10570 renamed. The major changes are described below.
10571
10572 Osd* interfaces renamed to AcpiOs* to eliminate namespace
10573 pollution/confusion within our target kernels. All OSD
10574 interfaces must be modified to match the new naming convention.
10575
10576 Files merged across the subsystem. A number of the smaller source
10577 and header files have been merged to reduce the file count and
10578 increase the density of the existing files. There are too many
10579 to list here. In general, makefiles that call out individual
10580 files will require rebuilding.
10581
10582 Interpreter files renamed. All interpreter files now have the
10583 prefix am* instead of ie* and is*.
10584
10585 Header files renamed: The acapi.h file is now acpixf.h. The
10586 acpiosd.h file is now acpiosxf.h. We are removing references to
10587 the acronym "API" since it is somewhat windowsy. The new name is
10588 "external interface" or xface or xf in the filenames.j
10589
10590
10591 All manifest constants have been forced to upper case (some were
10592 mixed case.) Also, the string "ACPI_" has been prepended to many
10593 (not all) of the constants, typedefs, and structs.
10594
10595 The globals "DebugLevel" and "DebugLayer" have been renamed
10596 "AcpiDbgLevel" and "AcpiDbgLayer" respectively.
10597
10598 All other globals within the subsystem are now prefixed with
10599 "AcpiGbl_" Internal procedures within the subsystem are now
10600 prefixed with "Acpi" (with only a few exceptions). The original
10601 two-letter abbreviation for the subcomponent remains after "Acpi"
10602 - for example, CmCallocate became AcpiCmCallocate.
10603
10604 Added a source code translation/conversion utility. Used to
10605 generate the Linux source code, it can be modified to generate
10606 other types of source as well. Can also be used to cleanup
10607 existing source by removing extraneous spaces and blank lines.
10608 Found in tools/acpisrc/*
10609
10610 OsdUnMapMemory was renamed to OsdUnmapMemory and then
10611 AcpiOsUnmapMemory. (UnMap became Unmap).
10612
10613 A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore.
10614 When set to one, this indicates that the caller wants to use the
10615
10616 semaphore as a mutex, not a counting semaphore. ACPI CA uses
10617 both types. However, implementers of this call may want to use
10618 different OS primitives depending on the type of semaphore
10619 requested. For example, some operating systems provide separate
10620
10621 "mutex" and "semaphore" interfaces - where the mutex interface is
10622 much faster because it doesn't have all the overhead of a full
10623 semaphore implementation.
10624
10625 Fixed a deadlock problem where a method that accesses the PCI
10626 address space can block forever if it is the first access to the
10627 space.
10628
10629 -------------------------------------------
10630 Summary of changes for this label: 06_02_00
10631
10632 Support for environments that cannot handle unaligned data
10633 accesses (e.g. firmware and OS environments devoid of alignment
10634 handler technology namely SAL/EFI and the IA-64 Linux kernel) has
10635 been added (via configurable macros) in these three areas: -
10636 Transfer of data from the raw AML byte stream is done via byte
10637 moves instead of word/dword/qword moves. - External objects are
10638 aligned within the user buffer, including package elements (sub-
10639 objects). - Conversion of name strings to UINT32 Acpi Names is now
10640 done byte-wise.
10641
10642 The Store operator was modified to mimic Microsoft's
10643 implementation when storing to a Buffer Field.
10644
10645 Added a check of the BM_STS bit before entering C3.
10646
10647 The methods subdirectory has been obsoleted and removed. A new
10648 file, cmeval.c subsumes the functionality.
10649
10650 A 16-bit (DOS) version of AcpiExec has been developed. The
10651 makefile is under the acpiexec directory.