1 ----------------------------------------
2 17 July 2015. Summary of changes for version 20150717:
4 1) ACPICA kernel-resident subsystem:
6 Improved the partitioning between the Debugger and Disassembler
7 components. This allows the Debugger to be used standalone within kernel
8 code without the Disassembler (which is used for single stepping also).
9 This renames and moves one file, dmobject.c to dbobject.c. Lv Zheng.
11 Debugger: Implemented a new command to trace the execution of control
12 methods (Trace). This is especially useful for the in-kernel version of
13 the debugger when file I/O may not be available for method trace output.
14 See the ACPICA reference for more information. Lv Zheng.
16 Moved all C library prototypes (used for the local versions of these
17 functions when requested) to a new header, acclib.h
18 Cleaned up the use of non-ANSI C library functions. These functions are
19 implemented locally in ACPICA. Moved all such functions to a common
20 source file, utnonansi.c
22 Debugger: Fixed a problem with the "!!" command (get last command
23 executed) where the debugger could enter an infinite loop and eventually
26 Removed the use of local macros that were used for some of the standard C
27 library functions to automatically cast input parameters. This mostly
28 affected the is* functions where the input parameter is defined to be an
29 int. This required a few modifications to the main ACPICA source code to
30 provide casting for these functions and eliminate possible compiler
31 warnings for these parameters.
33 Across the source code, added additional status/error checking to resolve
34 issues discovered by static source code analysis tools such as Coverity.
36 Example Code and Data Size: These are the sizes for the OS-independent
37 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
38 debug version of the code includes the debug output trace mechanism and
39 has a much larger code and data size.
42 Non-Debug Version: 100.9K Code, 24.5K Data, 125.4K Total
43 Debug Version: 197.8K Code, 81.5K Data, 279.3K Total
45 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total
46 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total
49 2) iASL Compiler/Disassembler and Tools:
51 iASL: Fixed a regression where the device map file feature no longer
52 worked properly when used in conjunction with the disassembler. It only
53 worked properly with the compiler itself.
55 iASL: Implemented a new warning for method LocalX variables that are set
56 but never used (similar to a C compiler such as gcc). This also applies
57 to ArgX variables that are not defined by the parent method, and are
58 instead (legally) used as local variables.
60 iASL/Preprocessor: Finished the pass-through of line numbers from the
61 preprocessor to the compiler. This ensures that compiler errors/warnings
62 have the correct original line numbers and filenames, regardless of any
65 iASL/Preprocessor: Fixed a couple of issues with comment handling and the
66 pass-through of comments to the preprocessor output file (which becomes
67 the compiler input file). Also fixed a problem with // comments that
68 appear after a math expression.
70 iASL: Added support for the TCPA server table to the table compiler and
71 template generator. (The client table was already previously supported)
73 iASL/Preprocessor: Added a permanent #define of the symbol "__IASL__" to
74 identify the iASL compiler.
76 Cleaned up the use of the macros NEGATIVE and POSITIVE which were defined
77 multiple times. The new names are ACPI_SIGN_NEGATIVE and
80 AcpiHelp: Update to expand help messages for the iASL preprocessor
84 ----------------------------------------
85 19 June 2015. Summary of changes for version 20150619:
87 Two regressions in version 20150616 have been addressed:
89 Fixes some problems/issues with the C library macro removal (ACPI_STRLEN,
90 etc.) This update changes ACPICA to only use the standard headers for
91 functions, or the prototypes for the local versions of the C library
92 functions. Across the source code, this required some additional casts
93 for some Clib invocations for portability. Moved all local prototypes to
96 Fixes several problems with recent changes to the handling of the FACS
97 table that could cause some systems not to boot.
100 ----------------------------------------
101 16 June 2015. Summary of changes for version 20150616:
104 1) ACPICA kernel-resident subsystem:
106 Across the entire ACPICA source code base, the various macros for the C
107 library functions (such as ACPI_STRLEN, etc.) have been removed and
108 replaced by the standard C library names (strlen, etc.) The original
109 purpose for these macros is no longer applicable. This simplification
110 reduces the number of macros used in the ACPICA source code
111 significantly, improving readability and maintainability.
113 Implemented support for a new ACPI table, the OSDT. This table, the
114 "override" SDT, can be loaded directly by the host OS at boot time. It
115 enables the replacement of existing namespace objects that were installed
116 via the DSDT and/or SSDTs. The primary purpose for this is to replace
117 buggy or incorrect ASL/AML code obtained via the BIOS. The OSDT is slated
118 for inclusion in a future version of the ACPI Specification. Lv Zheng/Bob
121 Added support for systems with (improperly) two FACS tables -- a "32-bit"
122 table (via FADT 32-bit legacy field) and a "64-bit" table (via the 64-bit
123 X field). This change will support both automatically. There continues to
124 be systems found with this issue. This support requires a change to the
125 AcpiSetFirmwareWakingVector interface. Also, a public global variable has
126 been added to allow the host to select which FACS is desired
127 (AcpiGbl_Use32BitFacsAddresses). See the ACPICA reference for more
130 Added a new feature to allow for systems that do not contain an FACS.
131 Although this is already supported on hardware-reduced platforms, the
132 feature has been extended for all platforms. The reasoning is that we do
133 not want to abort the entire ACPICA initialization just because the
134 system is seriously buggy and has no FACS.
136 Fixed a problem where the GUID strings for NFIT tables (in acuuid.h) were
137 not correctly transcribed from the ACPI specification in ACPICA version
140 Implemented support for the _CLS object in the AcpiGetObjectInfo external
143 Updated the definitions of the TCPA and TPM2 ACPI tables to the more
144 recent TCG ACPI Specification, December 14, 2014. Table disassembler and
145 compiler also updated. Note: The TCPA "server" table is not supported by
146 the disassembler/table-compiler at this time.
148 ACPI 6.0: Added definitions for the new GIC version field in the MADT.
150 Example Code and Data Size: These are the sizes for the OS-independent
151 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
152 debug version of the code includes the debug output trace mechanism and
153 has a much larger code and data size.
156 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total
157 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total
159 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total
160 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total
163 2) iASL Compiler/Disassembler and Tools:
165 Disassembler: Fixed a problem with the new symbolic operator disassembler
166 where incorrect ASL code could be emitted in some cases for the "non-
167 commutative" operators -- Subtract, Divide, Modulo, ShiftLeft, and
168 ShiftRight. The actual problem cases seem to be rather unusual in common
169 ASL code, however. David Box.
171 Modified the linux version of acpidump to obtain ACPI tables from not
172 just /dev/mem (which may not exist) and /sys/firmware/acpi/tables. Lv
175 iASL: Fixed a problem where the user preprocessor output file (.i)
176 contained extra data that was not expected. The compiler was using this
177 file as a temporary file and passed through #line directives in order to
178 keep compiler error messages in sync with the input file and line number
179 across multiple include files. The (.i) is no longer a temporary file as
180 the compiler uses a new, different file for the original purpose.
182 iASL: Fixed a problem where comments within the original ASL source code
183 file were not passed through to the preprocessor output file, nor any
186 iASL: Fixed some issues for the handling of the "#include" preprocessor
187 directive and the similar (but not the same) "Include" ASL operator.
189 iASL: Add support for the new OSDT in both the disassembler and compiler.
191 iASL: Fixed a problem with the constant folding support where a Buffer
192 object could be incorrectly generated (incorrectly formed) during a
193 conversion to a Store() operator.
195 AcpiHelp: Updated for new NFIT GUIDs, "External" AML opcode, and new
196 description text for the _REV predefined name. _REV now permanently
197 returns 2, as per the ACPI 6.0 specification.
199 Debugger: Enhanced the output of the Debug ASL object for references
200 produced by the Index operator. For Buffers and strings, only output the
201 actual byte pointed to by the index. For packages, only print the single
202 package element decoded by the index. Previously, the entire
203 buffer/string/package was emitted.
205 iASL/Table-compiler: Fixed a regression where the "generic" data types
206 were no longer recognized, causing errors.
209 ----------------------------------------
210 15 May 2015. Summary of changes for version 20150515:
212 This release implements most of ACPI 6.0 as described below.
214 1) ACPICA kernel-resident subsystem:
216 Implemented runtime argument checking and return value checking for all
217 new ACPI 6.0 predefined names. This includes: _BTH, _CR3, _DSD, _LPI,
218 _MTL, _PRR, _RDI, _RST, _TFP, _TSN.
220 Example Code and Data Size: These are the sizes for the OS-independent
221 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
222 debug version of the code includes the debug output trace mechanism and
223 has a much larger code and data size.
226 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total
227 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total
229 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total
230 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total
233 2) iASL Compiler/Disassembler and Tools:
235 iASL compiler: Added compile-time support for all new ACPI 6.0 predefined
236 names (argument count validation and return value typechecking.)
238 iASL disassembler and table compiler: implemented support for all new
239 ACPI 6.0 tables. This includes: DRTM, IORT, LPIT, NFIT, STAO, WPBT, XENV.
241 iASL disassembler and table compiler: Added ACPI 6.0 changes to existing
244 iASL preprocessor: Added a new directive to enable inclusion of binary
245 blobs into ASL code. The new directive is #includebuffer. It takes a
246 binary file as input and emits a named ascii buffer object into the ASL
249 AcpiHelp: Added support for all new ACPI 6.0 predefined names.
251 AcpiHelp: Added a new option, -d, to display all iASL preprocessor
254 AcpiHelp: Added a new option, -t, to display all known/supported ACPI
257 ----------------------------------------
258 10 April 2015. Summary of changes for version 20150410:
260 Reverted a change introduced in version 20150408 that caused
261 a regression in the disassembler where incorrect operator
262 symbols could be emitted.
264 ----------------------------------------
265 08 April 2015. Summary of changes for version 20150408:
268 1) ACPICA kernel-resident subsystem:
270 Permanently set the return value for the _REV predefined name. It now
271 returns 2 (was 5). This matches other ACPI implementations. _REV will be
272 deprecated in the future, and is now defined to be 1 for ACPI 1.0, and 2
273 for ACPI 2.0 and later. It should never be used to differentiate or
274 identify operating systems.
276 Added the "Windows 2015" string to the _OSI support. ACPICA will now
277 return TRUE to a query with this string.
279 Fixed several issues with the local version of the printf function.
281 Added the C99 compiler option (-std=c99) to the Unix makefiles.
284 Non-Debug Version: 99.9K Code, 27.4K Data, 127.3K Total
285 Debug Version: 195.2K Code, 80.7K Data, 275.9K Total
287 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
288 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
291 2) iASL Compiler/Disassembler and Tools:
293 iASL: Implemented an enhancement to the constant folding feature to
294 transform the parse tree to a simple Store operation whenever possible:
295 Add (2, 3, X) ==> is converted to: Store (5, X)
296 X = 2 + 3 ==> is converted to: Store (5, X)
298 Updated support for the SLIC table (Software Licensing Description Table)
299 in both the Data Table compiler and the disassembler. The SLIC table
300 support now conforms to "Microsoft Software Licensing Tables (SLIC and
301 MSDM). November 29, 2011. Copyright 2011 Microsoft". Note: Any SLIC data
302 following the ACPI header is now defined to be "Proprietary Data", and as
303 such, can only be entered or displayed as a hex data block.
305 Implemented full support for the MSDM table as described in the document
306 above. Note: The format of MSDM is similar to SLIC. Any MSDM data
307 following the ACPI header is defined to be "Proprietary Data", and can
308 only be entered or displayed as a hex data block.
310 Implemented the -Pn option for the iASL Table Compiler (was only
311 implemented for the ASL compiler). This option disables the iASL
314 Disassembler: For disassembly of Data Tables, added a comment field
315 around the Ascii equivalent data that is emitted as part of the "Raw
316 Table Data" block. This prevents the iASL Preprocessor from possible
317 confusion if/when the table is compiled.
319 Disassembler: Added an option (-df) to force the disassembler to assume
320 that the table being disassembled contains valid AML. This feature is
321 useful for disassembling AML files that contain ACPI signatures other
322 than DSDT or SSDT (such as OEMx or other signatures).
324 Changes for the EFI version of the tools:
325 1) Fixed a build error/issue
326 2) Fixed a cast warning
328 iASL: Fixed a path issue with the __FILE__ operator by making the
329 directory prefix optional within the internal SplitInputFilename
332 Debugger: Removed some unused global variables.
334 Tests: Updated the makefile for proper generation of the AAPITS suite.
336 ----------------------------------------
337 04 February 2015. Summary of changes for version 20150204:
339 ACPICA kernel-resident subsystem:
341 Updated all ACPICA copyrights and signons to 2014. Added the 2014
342 copyright to all module headers and signons, including the standard Linux
343 header. This affects virtually every file in the ACPICA core subsystem,
344 iASL compiler, all ACPICA utilities, and the test suites.
346 Events: Introduce ACPI_GPE_DISPATCH_RAW_HANDLER to fix GPE storm issues.
347 A raw gpe handling mechanism was created to allow better handling of GPE
348 storms that aren't easily managed by the normal handler. The raw handler
349 allows disabling/renabling of the the GPE so that interrupt storms can be
350 avoided in cases where events cannot be timely serviced. In this
351 scenario, handlers should use the AcpiSetGpe() API to disable/enable the
352 GPE. This API will leave the reference counts undisturbed, thereby
353 preventing unintentional clearing of the GPE when the intent in only to
354 temporarily disable it. Raw handlers allow enabling and disabling of a
355 GPE by removing GPE register locking. As such, raw handlers much provide
356 their own locks while using GPE API's to protect access to GPE data
360 Events: Always modify GPE registers under the GPE lock.
361 Applies GPE lock around AcpiFinishGpe() to protect access to GPE register
362 values. Reported as bug by joe.liu@apple.com.
364 Unix makefiles: Separate option to disable optimizations and
365 _FORTIFY_SOURCE. This change removes the _FORTIFY_SOURCE flag from the
366 NOOPT disable option and creates a separate flag (NOFORTIFY) for this
367 purpose. Some toolchains may define _FORTIFY_SOURCE which leads redefined
368 errors when building ACPICA. This allows disabling the option without
369 also having to disable optimazations.
373 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
374 Debug Version: 199.2K Code, 82.4K Data, 281.6K Total
376 ----------------------------------------
377 07 November 2014. Summary of changes for version 20141107:
379 This release is available at https://acpica.org/downloads
381 This release introduces and implements language extensions to ASL that
382 provide support for symbolic ("C-style") operators and expressions. These
383 language extensions are known collectively as ASL+.
386 1) iASL Compiler/Disassembler and Tools:
388 Disassembler: Fixed a problem with disassembly of the UartSerialBus
389 macro. Changed "StopBitsNone" to the correct "StopBitsZero". David E.
392 Disassembler: Fixed the Unicode macro support to add escape sequences.
393 All non-printable ASCII values are emitted as escape sequences, as well
394 as the standard escapes for quote and backslash. Ensures that the
395 disassembled macro can be correctly recompiled.
397 iASL: Added Printf/Fprintf macros for formatted output. These macros are
398 translated to existing AML Concatenate and Store operations. Printf
399 writes to the ASL Debug object. Fprintf allows the specification of an
400 ASL name as the target. Only a single format specifier is required, %o,
401 since the AML interpreter dynamically converts objects to the required
404 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate
405 (Concatenate (Concatenate (Concatenate ("", Arg0),
406 ": Unexpected value for "), Arg1), ", "), Arg2),
407 " at line "), Arg3), Debug)
409 (new) Printf ("%o: Unexpected value for %o, %o at line %o",
410 Arg0, Arg1, Arg2, Arg3)
412 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate
413 ("", Arg1), ": "), Arg0), " Successful"), STR1)
415 (new) Fprintf (STR1, "%o: %o Successful", Arg1, Arg0)
417 iASL: Added debug options (-bp, -bt) to dynamically prune levels of the
418 ASL parse tree before the AML code is generated. This allows blocks of
419 ASL code to be removed in order to help locate and identify problem
420 devices and/or code. David E. Box.
422 AcpiExec: Added support (-fi) for an optional namespace object
423 initialization file. This file specifies initial values for namespace
424 objects as necessary for debugging and testing different ASL code paths
425 that may be taken as a result of BIOS options.
428 2) Overview of symbolic operator support for ASL (ASL+)
429 -------------------------------------------------------
431 As an extension to the ASL language, iASL implements support for symbolic
432 (C-style) operators for math and logical expressions. This can greatly
433 simplify ASL code as well as improve both readability and
434 maintainability. These language extensions can exist concurrently with
435 all legacy ASL code and expressions.
437 The symbolic extensions are 100% compatible with existing AML
438 interpreters, since no new AML opcodes are created. To implement the
439 extensions, the iASL compiler transforms the symbolic expressions into
440 the legacy ASL/AML equivalents at compile time.
442 Full symbolic expressions are supported, along with the standard C
443 precedence and associativity rules.
445 Full disassembler support for the symbolic expressions is provided, and
446 creates an automatic migration path for existing ASL code to ASL+ code
447 via the disassembly process. By default, the disassembler now emits ASL+
448 code with symbolic expressions. An option (-dl) is provided to force the
449 disassembler to emit legacy ASL code if desired.
451 Below is the complete list of the currently supported symbolic operators
452 with examples. See the iASL User Guide for additional information.
455 ASL+ Syntax Legacy ASL Equivalent
456 ----------- ---------------------
460 Z = X + Y Add (X, Y, Z)
461 Z = X - Y Subtract (X, Y, Z)
462 Z = X * Y Multiply (X, Y, Z)
463 Z = X / Y Divide (X, Y, , Z)
464 Z = X % Y Mod (X, Y, Z)
465 Z = X << Y ShiftLeft (X, Y, Z)
466 Z = X >> Y ShiftRight (X, Y, Z)
467 Z = X & Y And (X, Y, Z)
468 Z = X | Y Or (X, Y, Z)
469 Z = X ^ Y Xor (X, Y, Z)
476 (X == Y) LEqual (X, Y)
477 (X != Y) LNotEqual (X, Y)
479 (X > Y) LGreater (X, Y)
480 (X <= Y) LLessEqual (X, Y)
481 (X >= Y) LGreaterEqual (X, Y)
486 // Assignment and compound assignment operations
490 X -= Y Subtract (X, Y, X)
491 X *= Y Multiply (X, Y, X)
492 X /= Y Divide (X, Y, , X)
494 X <<= Y ShiftLeft (X, Y, X)
495 X >>= Y ShiftRight (X, Y, X)
505 If (LOr (LOr (LEqual (And (R510, 0x03FB), 0x02E0), LEqual (
506 And (R520, 0x03FB), 0x02E0)), LOr (LEqual (And (R530,
508 0x02E0), LEqual (And (R540, 0x03FB), 0x02E0))))
510 And (MEMB, 0xFFFFFFF0, SRMB)
513 And (PDBM, 0xFFFFFFFFFFFFFFF9, PDBM)
515 Or (PDBM, 0x02, PDBM)
519 If (((R510 & 0x03FB) == 0x02E0) ||
520 ((R520 & 0x03FB) == 0x02E0) ||
521 ((R530 & 0x03FB) == 0x02E0) ||
522 ((R540 & 0x03FB) == 0x02E0))
524 SRMB = (MEMB & 0xFFFFFFF0)
527 PDBM &= 0xFFFFFFFFFFFFFFF9
533 Store (0x1234, Local1)
534 Multiply (Add (Add (Local1, TEST), 0x20), Local2, Local3)
535 Multiply (Local2, Add (Add (Local1, TEST), 0x20), Local3)
536 Add (Local1, Add (TEST, Multiply (0x20, Local2)), Local3)
537 Store (Index (PKG1, 0x03), Local6)
538 Store (Add (Local3, Local2), Debug)
539 Add (Local1, 0x0F, Local2)
540 Add (Local1, Multiply (Local2, Local3), Local2)
541 Multiply (Add (Add (Local1, TEST), 0x20), ToBCD (Local1), Local3)
545 Local3 = (((Local1 + TEST) + 0x20) * Local2)
546 Local3 = (Local2 * ((Local1 + TEST) + 0x20))
547 Local3 = (Local1 + (TEST + (0x20 * Local2)))
548 Local6 = Index (PKG1, 0x03)
549 Debug = (Local3 + Local2)
550 Local2 = (Local1 + 0x0F)
551 Local2 = (Local1 + (Local2 * Local3))
552 Local3 = (((Local1 + TEST) + 0x20) * ToBCD (Local1))
555 ----------------------------------------
556 26 September 2014. Summary of changes for version 20140926:
558 1) ACPICA kernel-resident subsystem:
560 Updated the GPIO operation region handler interface (GeneralPurposeIo).
561 In order to support GPIO Connection objects with multiple pins, along
562 with the related Field objects, the following changes to the interface
563 have been made: The Address is now defined to be the offset in bits of
564 the field unit from the previous invocation of a Connection. It can be
565 viewed as a "Pin Number Index" into the connection resource descriptor.
566 The BitWidth is the exact bit width of the field. It is usually one bit,
567 but not always. See the ACPICA reference guide (section 8.8.6.2.1) for
568 additional information and examples.
570 GPE support: During ACPICA/GPE initialization, ensure that all GPEs with
571 corresponding _Lxx/_Exx methods are disabled (they may have been enabled
572 by the firmware), so that they cannot fire until they are enabled via
573 AcpiUpdateAllGpes. Rafael J. Wysocki.
575 Added a new return flag for the Event/GPE status interfaces --
576 AcpiGetEventStatus and AcpiGetGpeStatus. The new
577 ACPI_EVENT_FLAGS_HAS_HANDLER flag is used to indicate that the event or
578 GPE currently has a handler associated with it, and can thus actually
579 affect the system. Lv Zheng.
581 Example Code and Data Size: These are the sizes for the OS-independent
582 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
583 debug version of the code includes the debug output trace mechanism and
584 has a much larger code and data size.
587 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total
588 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total
590 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
591 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
593 2) iASL Compiler/Disassembler and Tools:
595 iASL: Fixed a memory allocation/free regression introduced in 20140828
596 that could cause the compiler to crash. This was introduced inadvertently
597 during the effort to eliminate compiler memory leaks. ACPICA BZ 1111,
600 iASL: Removed two error messages that have been found to create false
601 positives, until they can be fixed and fully validated (ACPICA BZ 1112):
602 1) Illegal forward reference within a method
603 2) Illegal reference across two methods
605 iASL: Implemented a new option (-lm) to create a hardware mapping file
606 that summarizes all GPIO, I2C, SPI, and UART connections. This option
607 works for both the compiler and disassembler. See the iASL compiler user
608 guide for additional information and examples (section 6.4.6).
610 AcpiDump: Added support for the version 1 (ACPI 1.0) RSDP in addition to
611 version 2. This corrects the AE_BAD_HEADER exception seen on systems with
612 a version 1 RSDP. Lv Zheng ACPICA BZ 1097.
614 AcpiExec: For Unix versions, don't attempt to put STDIN into raw mode
615 unless STDIN is actually a terminal. Assists with batch-mode processing.
618 Disassembler/AcpiHelp: Added another large group of recognized _HID
622 ----------------------------------------
623 28 August 2014. Summary of changes for version 20140828:
625 1) ACPICA kernel-resident subsystem:
627 Fixed a problem related to the internal use of the Timer() operator where
628 a 64-bit divide could cause an attempted link to a double-precision math
629 library. This divide is not actually necessary, so the code was
630 restructured to eliminate it. Lv Zheng.
632 ACPI 5.1: Added support for the runtime validation of the _DSD package
633 (similar to the iASL support).
635 ACPI 5.1/Headers: Added support for the GICC affinity subtable to the
636 SRAT table. Hanjun Guo <hanjun.guo@linaro.org>.
638 Example Code and Data Size: These are the sizes for the OS-independent
639 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
640 debug version of the code includes the debug output trace mechanism and
641 has a much larger code and data size.
644 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
645 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
647 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total1
648 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total
650 2) iASL Compiler/Disassembler and Tools:
652 AcpiExec: Fixed a problem on unix systems where the original terminal
653 state was not always properly restored upon exit. Seen when using the -v
654 option. ACPICA BZ 1104.
656 iASL: Fixed a problem with the validation of the ranges/length within the
657 Memory24 resource descriptor. There was a boundary condition when the
658 range was equal to the (length -1) caused by the fact that these values
659 are defined in 256-byte blocks, not bytes. ACPICA BZ 1098
661 Disassembler: Fixed a problem with the GpioInt descriptor interrupt
663 flags. The flags are actually 2 bits, not 1, and the "ActiveBoth" keyword
665 now supported properly.
667 ACPI 5.1: Added the GICC affinity subtable to the SRAT table. Supported
668 in the disassembler, data table compiler, and table template generator.
670 iASL: Added a requirement for Device() objects that one of either a _HID
671 or _ADR must exist within the scope of a Device, as per the ACPI
672 specification. Remove a similar requirement that was incorrectly in place
675 iASL: Added error detection for illegal named references within control
676 methods that would cause runtime failures. Now trapped as errors are: 1)
677 References to objects within a non-parent control method. 2) Forward
678 references (within a method) -- for control methods, AML interpreters use
679 a one-pass parse of control methods. ACPICA BZ 1008.
681 iASL: Added error checking for dependencies related to the _PSx power
682 methods. ACPICA BZ 1029.
683 1) For _PS0, one of these must exist within the same scope: _PS1, _PS2,
685 2) For _PS1, _PS2, and PS3: A _PS0 object must exist within the same
688 iASL and table compiler: Cleanup miscellaneous memory leaks by fully
689 deploying the existing object and string caches and adding new caches for
692 iASL: Split the huge parser source file into multiple subfiles to improve
693 manageability. Generation now requires the M4 macro preprocessor, which
694 is part of the Bison distribution on both unix and windows platforms.
696 AcpiSrc: Fixed and removed all extraneous warnings generated during
697 entire ACPICA source code scan and/or conversion.
700 ----------------------------------------
702 24 July 2014. Summary of changes for version 20140724:
704 The ACPI 5.1 specification has been released and is available at:
705 http://uefi.org/specs/access
708 0) ACPI 5.1 support in ACPICA:
710 ACPI 5.1 is fully supported in ACPICA as of this release.
712 New predefined names. Support includes iASL and runtime ACPICA
714 _CCA (Cache Coherency Attribute).
715 _DSD (Device-Specific Data). David Box.
717 Modifications to existing ACPI tables. Support includes headers, iASL
718 Data Table compiler, disassembler, and the template generator.
719 FADT - New fields and flags. Graeme Gregory.
720 GTDT - One new subtable and new fields. Tomasz Nowicki.
721 MADT - Two new subtables. Tomasz Nowicki.
722 PCCT - One new subtable.
725 New notification type for System Resource Affinity change events.
728 1) ACPICA kernel-resident subsystem:
730 Fixed a regression introduced in 20140627 where a fault can happen during
731 the deletion of Alias AML namespace objects. The problem affected both
732 the core ACPICA and the ACPICA tools including iASL and AcpiExec.
734 Implemented a new GPE public interface, AcpiMarkGpeForWake. Provides a
735 simple mechanism to enable wake GPEs that have no associated handler or
736 control method. Rafael Wysocki.
738 Updated the AcpiEnableGpe interface to disallow the enable if there is no
739 handler or control method associated with the particular GPE. This will
740 help avoid meaningless GPEs and even GPE floods. Rafael Wysocki.
742 Updated GPE handling and dispatch by disabling the GPE before clearing
743 the status bit for edge-triggered GPEs. Lv Zheng.
745 Added Timer() support to the AML Debug object. The current timer value is
746 now displayed with each invocation of (Store to) the debug object to
747 enable simple generation of execution times for AML code (method
748 execution for example.) ACPICA BZ 1093.
750 Example Code and Data Size: These are the sizes for the OS-independent
751 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
752 debug version of the code includes the debug output trace mechanism and
753 has a much larger code and data size.
756 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total
757 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total
759 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total
760 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total
763 2) iASL Compiler/Disassembler and Tools:
765 Fixed an issue with the recently added local printf implementation,
766 concerning width/precision specifiers that could cause incorrect output.
767 Lv Zheng. ACPICA BZ 1094.
769 Disassembler: Added support to detect buffers that contain UUIDs and
770 disassemble them to an invocation of the ToUUID operator. Also emit
771 commented descriptions of known ACPI-related UUIDs.
773 AcpiHelp: Added support to display known ACPI-related UUIDs. New option,
774 -u. Adds three new files.
776 iASL: Update table compiler and disassembler for DMAR table changes that
777 were introduced in September 2013. With assistance by David Woodhouse.
779 ----------------------------------------
780 27 June 2014. Summary of changes for version 20140627:
782 1) ACPICA kernel-resident subsystem:
784 Formatted Output: Implemented local versions of standard formatted output
785 utilities such as printf, etc. Over time, it has been discovered that
786 there are in fact many portability issues with printf, and the addition
787 of this feature will fix/prevent these issues once and for all. Some
788 known issues are summarized below:
790 1) Output of 64-bit values is not portable. For example, UINT64 is %ull
791 for the Linux kernel and is %uI64 for some MSVC versions.
792 2) Invoking printf consistently in a manner that is portable across both
793 32-bit and 64-bit platforms is difficult at best in many situations.
794 3) The output format for pointers varies from system to system (leading
795 zeros especially), and leads to inconsistent output from ACPICA across
797 4) Certain platform-specific printf formats may conflict with ACPICA use.
798 5) If there is no local C library available, ACPICA now has local support
801 -- To address these printf issues in a complete manner, ACPICA now
802 directly implements a small subset of printf format specifiers, only
803 those that it requires. Adds a new file, utilities/utprint.c. Lv Zheng.
805 Implemented support for ACPICA generation within the EFI environment.
806 Initially, the AcpiDump utility is supported in the UEFI shell
807 environment. Lv Zheng.
809 Added a new external interface, AcpiLogError, to improve ACPICA
810 portability. This allows the host to redirect error messages from the
811 ACPICA utilities. Lv Zheng.
813 Added and deployed new OSL file I/O interfaces to improve ACPICA
821 There are C library implementations of these functions in the new file
822 service_layers/oslibcfs.c -- however, the functions can be implemented by
823 the local host in any way necessary. Lv Zheng.
825 Implemented a mechanism to disable/enable ACPI table checksum validation
826 at runtime. This can be useful when loading tables very early during OS
827 initialization when it may not be possible to map the entire table in
828 order to compute the checksum. Lv Zheng.
830 Fixed a buffer allocation issue for the Generic Serial Bus support.
831 Originally, a fixed buffer length was used. This change allows for
832 variable-length buffers based upon the protocol indicated by the field
833 access attributes. Reported by Lan Tianyu. Lv Zheng.
835 Fixed a problem where an object detached from a namespace node was not
836 properly terminated/cleared and could cause a circular list problem if
837 reattached. ACPICA BZ 1063. David Box.
839 Fixed a possible recursive lock acquisition in hwregs.c. Rakib Mullick.
841 Fixed a possible memory leak in an error return path within the function
842 AcpiUtCopyIobjectToIobject. ACPICA BZ 1087. Colin Ian King.
844 Example Code and Data Size: These are the sizes for the OS-independent
845 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
846 debug version of the code includes the debug output trace mechanism and
847 has a much larger code and data size.
850 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total
851 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total
853 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total
854 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total
857 2) iASL Compiler/Disassembler and Tools:
859 Disassembler: Add dump of ASCII equivalent text within a comment at the
860 end of each line of the output for the Buffer() ASL operator.
862 AcpiDump: Miscellaneous changes:
863 Fixed repetitive table dump in -n mode.
864 For older EFI platforms, use the ACPI 1.0 GUID during RSDP search if
865 the ACPI 2.0 GUID fails.
867 iASL: Fixed a problem where the compiler could fault if incorrectly given
868 an acpidump output file as input. ACPICA BZ 1088. David Box.
870 AcpiExec/AcpiNames: Fixed a problem where these utilities could fault if
871 they are invoked without any arguments.
873 Debugger: Fixed a possible memory leak in an error return path. ACPICA BZ
874 1086. Colin Ian King.
876 Disassembler: Cleaned up a block of code that extracts a parent Op
877 object. Added a comment that explains that the parent is guaranteed to be
878 valid in this case. ACPICA BZ 1069.
880 ----------------------------------------
881 24 April 2014. Summary of changes for version 20140424:
883 1) ACPICA kernel-resident subsystem:
885 Implemented support to skip/ignore NULL address entries in the RSDT/XSDT.
886 Some of these tables are known to contain a trailing NULL entry. Lv
889 Removed an extraneous error message for the case where there are a large
890 number of system GPEs (> 124). This was the "32-bit FADT register is too
891 long to convert to GAS struct" message, which is irrelevant for GPEs
892 since the GPEx_BLK_LEN fields of the FADT are always used instead of the
893 (limited capacity) GAS bit length. Also, several changes to ensure proper
894 support for GPE numbers > 255, where some "GPE number" fields were 8-bits
897 Implemented and deployed additional configuration support for the public
898 ACPICA external interfaces. Entire classes of interfaces can now be
899 easily modified or configured out, replaced by stubbed inline functions
900 by default. Lv Zheng.
902 Moved all public ACPICA runtime configuration globals to the public
903 ACPICA external interface file for convenience. Also, removed some
904 obsolete/unused globals. See the file acpixf.h. Lv Zheng.
906 Documentation: Added a new section to the ACPICA reference describing the
907 maximum number of GPEs that can be supported by the FADT-defined GPEs in
908 block zero and one. About 1200 total. See section 4.4.1 of the ACPICA
911 Example Code and Data Size: These are the sizes for the OS-independent
912 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
913 debug version of the code includes the debug output trace mechanism and
914 has a much larger code and data size.
917 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total
918 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total
920 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total
921 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
924 2) iASL Compiler/Disassembler and Tools:
926 iASL and disassembler: Add full support for the LPIT table (Low Power
927 Idle Table). Includes support in the disassembler, data table compiler,
928 and template generator.
931 1) Add option to force the use of the RSDT (over the XSDT).
932 2) Improve validation of the RSDP signature (use 8 chars instead of 4).
934 iASL: Add check for predefined packages that are too large. For
935 predefined names that contain subpackages, check if each subpackage is
936 too large. (Check for too small already exists.)
938 Debugger: Updated the GPE command (which simulates a GPE by executing the
939 GPE code paths in ACPICA). The GPE device is now optional, and defaults
940 to the GPE 0/1 FADT-defined blocks.
942 Unix application OSL: Update line-editing support. Add additional error
943 checking and take care not to reset terminal attributes on exit if they
944 were never set. This should help guarantee that the terminal is always
945 left in the previous state on program exit.
947 ----------------------------------------
948 25 March 2014. Summary of changes for version 20140325:
950 1) ACPICA kernel-resident subsystem:
952 Updated the auto-serialize feature for control methods. This feature
953 automatically serializes all methods that create named objects in order
954 to prevent runtime errors. The update adds support to ignore the
955 currently executing AML SyncLevel when invoking such a method, in order
956 to prevent disruption of any existing SyncLevel priorities that may exist
957 in the AML code. Although the use of SyncLevels is relatively rare, this
958 change fixes a regression where an AE_AML_MUTEX_ORDER exception can
959 appear on some machines starting with the 20140214 release.
961 Added a new external interface to allow the host to install ACPI tables
962 very early, before the namespace is even created. AcpiInstallTable gives
963 the host additional flexibility for ACPI table management. Tables can be
964 installed directly by the host as if they had originally appeared in the
965 XSDT/RSDT. Installed tables can be SSDTs or other ACPI data tables
966 (anything except the DSDT and FACS). Adds a new file, tbdata.c, along
967 with additional internal restructuring and cleanup. See the ACPICA
968 Reference for interface details. Lv Zheng.
970 Added validation of the checksum for all incoming dynamically loaded
971 tables (via external interfaces or via AML Load/LoadTable operators). Lv
974 Updated the use of the AcpiOsWaitEventsComplete interface during Notify
975 and GPE handler removal. Restructured calls to eliminate possible race
976 conditions. Lv Zheng.
978 Added a warning for the use/execution of the ASL/AML Unload (table)
979 operator. This will help detect and identify machines that use this
980 operator if and when it is ever used. This operator has never been seen
981 in the field and the usage model and possible side-effects of the drastic
982 runtime action of a full table removal are unknown.
984 Reverted the use of #pragma push/pop which was introduced in the 20140214
985 release. It appears that push and pop are not implemented by enough
986 compilers to make the use of this feature feasible for ACPICA at this
987 time. However, these operators may be deployed in a future ACPICA
990 Added the missing EXPORT_SYMBOL macros for the install and remove SCI
993 Source code generation:
994 1) Disabled the use of the "strchr" macro for the gcc-specific
995 generation. For some versions of gcc, this macro can periodically expose
996 a compiler bug which in turn causes compile-time error(s).
997 2) Added support for PPC64 compilation. Colin Ian King.
999 Example Code and Data Size: These are the sizes for the OS-independent
1000 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1001 debug version of the code includes the debug output trace mechanism and
1002 has a much larger code and data size.
1005 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total
1006 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
1008 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
1009 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
1012 2) iASL Compiler/Disassembler and Tools:
1014 Disassembler: Added several new features to improve the readability of
1015 the resulting ASL code. Extra information is emitted within comment
1016 fields in the ASL code:
1017 1) Known _HID/_CID values are decoded to descriptive text.
1018 2) Standard values for the Notify() operator are decoded to descriptive
1020 3) Target operands are expanded to full pathnames (in a comment) when
1023 Disassembler: Miscellaneous updates for extern() handling:
1024 1) Abort compiler if file specified by -fe option does not exist.
1025 2) Silence unnecessary warnings about argument count mismatches.
1026 3) Update warning messages concerning unresolved method externals.
1027 4) Emit "UnknownObj" keyword for externals whose type cannot be
1031 1) Added the -a option to display both the ASL syntax and the AML
1032 encoding for an input ASL operator. This effectively displays all known
1033 information about an ASL operator with one AcpiHelp invocation.
1034 2) Added substring match support (similar to a wildcard) for the -i
1035 (_HID/PNP IDs) option.
1037 iASL/Disassembler: Since this tool does not yet support execution on big-
1038 endian machines, added detection of endianness and an error message if
1039 execution is attempted on big-endian. Support for big-endian within iASL
1040 is a feature that is on the ACPICA to-be-done list.
1043 1) Remove option to extract binary files from an acpidump; this function
1044 is made obsolete by the AcpiXtract utility.
1045 2) General cleanup of open files and allocated buffers.
1047 ----------------------------------------
1048 14 February 2014. Summary of changes for version 20140214:
1050 1) ACPICA kernel-resident subsystem:
1052 Implemented a new mechanism to proactively prevent problems with ill-
1053 behaved reentrant control methods that create named ACPI objects. This
1054 behavior is illegal as per the ACPI specification, but is nonetheless
1055 frequently seen in the field. Previously, this could lead to an
1056 AE_ALREADY_EXISTS exception if the method was actually entered by more
1057 than one thread. This new mechanism detects such methods at table load
1058 time and marks them "serialized" to prevent reentrancy. A new global
1059 option, AcpiGbl_AutoSerializeMethods, has been added to disable this
1060 feature if desired. This mechanism and global option obsoletes and
1061 supersedes the previous AcpiGbl_SerializeAllMethods option.
1063 Added the "Windows 2013" string to the _OSI support. ACPICA will now
1064 respond TRUE to _OSI queries with this string. It is the stated policy of
1065 ACPICA to add new strings to the _OSI support as soon as possible after
1066 they are defined. See the full ACPICA _OSI policy which has been added to
1067 the utilities/utosi.c file.
1069 Hardened/updated the _PRT return value auto-repair code:
1070 1) Do not abort the repair on a single subpackage failure, continue to
1071 check all subpackages.
1072 2) Add check for the minimum subpackage length (4).
1073 3) Properly handle extraneous NULL package elements.
1075 Added support to avoid the possibility of infinite loops when traversing
1076 object linked lists. Never allow an infinite loop, even in the face of
1077 corrupted object lists.
1079 ACPICA headers: Deployed the use of #pragma pack(push) and #pragma
1080 pack(pop) directives to ensure that the ACPICA headers are independent of
1081 compiler settings or other host headers.
1083 Example Code and Data Size: These are the sizes for the OS-independent
1084 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1085 debug version of the code includes the debug output trace mechanism and
1086 has a much larger code and data size.
1089 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
1090 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
1092 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
1093 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
1096 2) iASL Compiler/Disassembler and Tools:
1098 iASL/Table-compiler: Fixed a problem with support for the SPMI table. The
1099 first reserved field was incorrectly forced to have a value of zero. This
1100 change correctly forces the field to have a value of one. ACPICA BZ 1081.
1102 Debugger: Added missing support for the "Extra" and "Data" subobjects
1103 when displaying object data.
1105 Debugger: Added support to display entire object linked lists when
1106 displaying object data.
1108 iASL: Removed the obsolete -g option to obtain ACPI tables from the
1109 Windows registry. This feature has been superseded by the acpidump
1112 ----------------------------------------
1113 14 January 2014. Summary of changes for version 20140114:
1115 1) ACPICA kernel-resident subsystem:
1117 Updated all ACPICA copyrights and signons to 2014. Added the 2014
1118 copyright to all module headers and signons, including the standard Linux
1119 header. This affects virtually every file in the ACPICA core subsystem,
1120 iASL compiler, all ACPICA utilities, and the test suites.
1122 Improved parameter validation for AcpiInstallGpeBlock. Added the
1124 1) The incoming device handle refers to type ACPI_TYPE_DEVICE.
1125 2) There is not already a GPE block attached to the device.
1126 Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a
1129 Correctly support "references" in the ACPI_OBJECT. This change fixes the
1130 support to allow references (namespace nodes) to be passed as arguments
1131 to control methods via the evaluate object interface. This is probably
1132 most useful for testing purposes, however.
1134 Improved support for 32/64 bit physical addresses in printf()-like
1135 output. This change improves the support for physical addresses in printf
1136 debug statements and other output on both 32-bit and 64-bit hosts. It
1137 consistently outputs the appropriate number of bytes for each host. The
1138 %p specifier is unsatisfactory since it does not emit uniform output on
1139 all hosts/clib implementations (on some, leading zeros are not supported,
1140 leading to difficult-to-read output).
1142 Example Code and Data Size: These are the sizes for the OS-independent
1143 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1144 debug version of the code includes the debug output trace mechanism and
1145 has a much larger code and data size.
1148 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
1149 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
1151 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
1152 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
1155 2) iASL Compiler/Disassembler and Tools:
1157 iASL: Fix a possible fault when using the Connection() operator. Fixes a
1158 problem if the parent Field definition for the Connection operator refers
1159 to an operation region that does not exist. ACPICA BZ 1064.
1161 AcpiExec: Load of local test tables is now optional. The utility has the
1162 capability to load some various tables to test features of ACPICA.
1163 However, there are enough of them that the output of the utility became
1164 confusing. With this change, only the required local tables are displayed
1165 (RSDP, XSDT, etc.) along with the actual tables loaded via the command
1166 line specification. This makes the default output simler and easier to
1167 understand. The -el command line option restores the original behavior
1168 for testing purposes.
1170 AcpiExec: Added support for overlapping operation regions. This change
1171 expands the simulation of operation regions by supporting regions that
1172 overlap within the given address space. Supports SystemMemory and
1173 SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031.
1175 AcpiExec: Added region handler support for PCI_Config and EC spaces. This
1176 allows AcpiExec to simulate these address spaces, similar to the current
1177 support for SystemMemory and SystemIO.
1179 Debugger: Added new command to read/write/compare all namespace objects.
1180 The command "test objects" will exercise the entire namespace by writing
1181 new values to each data object, and ensuring that the write was
1182 successful. The original value is then restored and verified.
1184 Debugger: Added the "test predefined" command. This change makes this
1185 test public and puts it under the new "test" command. The test executes
1186 each and every predefined name within the current namespace.
1188 ----------------------------------------
1189 18 December 2013. Summary of changes for version 20131218:
1191 Global note: The ACPI 5.0A specification was released this month. There
1192 are no changes needed for ACPICA since this release of ACPI is an
1193 errata/clarification release. The specification is available at
1197 1) ACPICA kernel-resident subsystem:
1199 Added validation of the XSDT root table if it is present. Some older
1200 platforms contain an XSDT that is ill-formed or otherwise invalid (such
1201 as containing some or all entries that are NULL pointers). This change
1202 adds a new function to validate the XSDT before actually using it. If the
1203 XSDT is found to be invalid, ACPICA will now automatically fall back to
1204 using the RSDT instead. Original implementation by Zhao Yakui. Ported to
1205 ACPICA and enhanced by Lv Zheng and Bob Moore.
1207 Added a runtime option to ignore the XSDT and force the use of the RSDT.
1208 This change adds a runtime option that will force ACPICA to use the RSDT
1209 instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec
1210 requires that an XSDT be used instead of the RSDT, the XSDT has been
1211 found to be corrupt or ill-formed on some machines. Lv Zheng.
1213 Added a runtime option to favor 32-bit FADT register addresses over the
1214 64-bit addresses. This change adds an option to favor 32-bit FADT
1215 addresses when there is a conflict between the 32-bit and 64-bit versions
1216 of the same register. The default behavior is to use the 64-bit version
1217 in accordance with the ACPI specification. This can now be overridden via
1218 the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng.
1220 During the change above, the internal "Convert FADT" and "Verify FADT"
1221 functions have been merged to simplify the code, making it easier to
1222 understand and maintain. ACPICA BZ 933.
1224 Improve exception reporting and handling for GPE block installation.
1225 Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the
1226 status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019.
1228 Added helper macros to extract bus/segment numbers from the HEST table.
1229 This change adds two macros to extract the encoded bus and segment
1230 numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT.
1231 Betty Dall <betty.dall@hp.com>
1233 Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used
1234 by ACPICA. It is not a public macro, so it should have no effect on
1235 existing OSV code. Lv Zheng.
1237 Example Code and Data Size: These are the sizes for the OS-independent
1238 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1239 debug version of the code includes the debug output trace mechanism and
1240 has a much larger code and data size.
1243 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
1244 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
1246 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
1247 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
1250 2) iASL Compiler/Disassembler and Tools:
1252 Disassembler: Improved pathname support for emitted External()
1253 statements. This change adds full pathname support for external names
1254 that have been resolved internally by the inclusion of additional ACPI
1255 tables (via the iASL -e option). Without this change, the disassembler
1256 can emit multiple externals for the same object, or it become confused
1257 when the Scope() operator is used on an external object. Overall, greatly
1258 improves the ability to actually recompile the emitted ASL code when
1259 objects a referenced across multiple ACPI tables. Reported by Michael
1260 Tsirkin (mst@redhat.com).
1262 Tests/ASLTS: Updated functional control suite to execute with no errors.
1263 David Box. Fixed several errors related to the testing of the interpreter
1264 slack mode. Lv Zheng.
1266 iASL: Added support to detect names that are declared within a control
1267 method, but are unused (these are temporary names that are only valid
1268 during the time the method is executing). A remark is issued for these
1269 cases. ACPICA BZ 1022.
1271 iASL: Added full support for the DBG2 table. Adds full disassembler,
1272 table compiler, and template generator support for the DBG2 table (Debug
1275 iASL: Added full support for the PCCT table, update the table definition.
1276 Updates the PCCT table definition in the actbl3.h header and adds table
1277 compiler and template generator support.
1279 iASL: Added an option to emit only error messages (no warnings/remarks).
1280 The -ve option will enable only error messages, warnings and remarks are
1281 suppressed. This can simplify debugging when only the errors are
1282 important, such as when an ACPI table is disassembled and there are many
1283 warnings and remarks -- but only the actual errors are of real interest.
1285 Example ACPICA code (source/tools/examples): Updated the example code so
1286 that it builds to an actual working program, not just example code. Added
1287 ACPI tables and execution of an example control method in the DSDT. Added
1288 makefile support for Unix generation.
1290 ----------------------------------------
1291 15 November 2013. Summary of changes for version 20131115:
1293 This release is available at https://acpica.org/downloads
1296 1) ACPICA kernel-resident subsystem:
1298 Resource Manager: Fixed loop termination for the "get AML length"
1299 function. The loop previously had an error termination on a NULL resource
1300 pointer, which can never happen since the loop simply increments a valid
1301 resource pointer. This fix changes the loop to terminate with an error on
1302 an invalid end-of-buffer condition. The problem can be seen as an
1303 infinite loop by callers to AcpiSetCurrentResources with an invalid or
1304 corrupted resource descriptor, or a resource descriptor that is missing
1305 an END_TAG descriptor. Reported by Dan Carpenter
1306 <dan.carpenter@oracle.com>. Lv Zheng, Bob Moore.
1308 Table unload and ACPICA termination: Delete all attached data objects
1309 during namespace node deletion. This fix updates namespace node deletion
1310 to delete the entire list of attached objects (attached via
1311 AcpiAttachObject) instead of just one of the attached items. ACPICA BZ
1312 1024. Tomasz Nowicki (tomasz.nowicki@linaro.org).
1314 ACPICA termination: Added support to delete all objects attached to the
1315 root namespace node. This fix deletes any and all objects that have been
1316 attached to the root node via AcpiAttachData. Previously, none of these
1317 objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026.
1319 Debug output: Do not emit the function nesting level for the in-kernel
1320 build. The nesting level is really only useful during a single-thread
1321 execution. Therefore, only enable this output for the AcpiExec utility.
1322 Also, only emit the thread ID when executing under AcpiExec (Context
1323 switches are still always detected and a message is emitted). ACPICA BZ
1326 Example Code and Data Size: These are the sizes for the OS-independent
1327 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1328 debug version of the code includes the debug output trace mechanism and
1329 has a much larger code and data size.
1332 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
1333 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
1335 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
1336 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
1339 2) iASL Compiler/Disassembler and Tools:
1341 AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the
1342 correct portable POSIX header for terminal control functions.
1344 Disassembler: Fixed control method invocation issues related to the use
1345 of the CondRefOf() operator. The problem is seen in the disassembly where
1346 control method invocations may not be disassembled properly if the
1347 control method name has been used previously as an argument to CondRefOf.
1348 The solution is to not attempt to emit an external declaration for the
1349 CondRefOf target (it is not necessary in the first place). This prevents
1350 disassembler object type confusion. ACPICA BZ 988.
1352 Unix Makefiles: Added an option to disable compiler optimizations and the
1353 _FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA
1354 with optimizations (reportedly, gcc 4.4 for example). This change adds a
1355 command line option for make (NOOPT) that disables all compiler
1356 optimizations and the _FORTIFY_SOURCE compiler flag. The default
1357 optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ
1358 1034. Lv Zheng, Bob Moore.
1360 Tests/ASLTS: Added options to specify individual test cases and modes.
1361 This allows testers running aslts.sh to optionally specify individual
1362 test modes and test cases. Also added an option to disable the forced
1363 generation of the ACPICA tools from source if desired. Lv Zheng.
1365 ----------------------------------------
1366 27 September 2013. Summary of changes for version 20130927:
1368 This release is available at https://acpica.org/downloads
1371 1) ACPICA kernel-resident subsystem:
1373 Fixed a problem with store operations to reference objects. This change
1374 fixes a problem where a Store operation to an ArgX object that contained
1376 reference to a field object did not complete the automatic dereference
1378 then write to the actual field object. Instead, the object type of the
1379 field object was inadvertently changed to match the type of the source
1380 operand. The new behavior will actually write to the field object (buffer
1381 field or field unit), thus matching the correct ACPI-defined behavior.
1383 Implemented support to allow the host to redefine individual OSL
1384 prototypes. This change enables the host to redefine OSL prototypes found
1385 in the acpiosxf.h file. This allows the host to implement OSL interfaces
1386 with a macro or inlined function. Further, it allows the host to add any
1387 additional required modifiers such as __iomem, __init, __exit, etc., as
1388 necessary on a per-interface basis. Enables maximum flexibility for the
1389 OSL interfaces. Lv Zheng.
1391 Hardcoded the access width for the FADT-defined reset register. The ACPI
1392 specification requires the reset register width to be 8 bits. ACPICA now
1393 hardcodes the width to 8 and ignores the FADT width value. This provides
1394 compatibility with other ACPI implementations that have allowed BIOS code
1395 with bad register width values to go unnoticed. Matthew Garett, Bob
1399 Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is
1401 in the OSL header (acpiosxf). The change modifies the position of this
1402 macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid
1403 build issues if the OSL defines the implementation of the interface to be
1404 an inline stub function. Lv Zheng.
1406 Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA
1407 initialization interfaces. This change adds a new macro for the main init
1408 and terminate external interfaces in order to support hosts that require
1409 additional or different processing for these functions. Changed from
1410 ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv
1413 Cleaned up the memory allocation macros for configurability. In the
1415 case, the ACPI_ALLOCATE and related macros now resolve directly to their
1416 respective AcpiOs* OSL interfaces. Two options:
1417 1) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by
1418 default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define.
1419 2) For AcpiExec (and for debugging), the macros can optionally be
1421 to the local ACPICA interfaces that track each allocation (local tracking
1422 is used to immediately detect memory leaks).
1425 Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel
1426 to predefine this macro to either TRUE or FALSE during the system build.
1428 Replaced __FUNCTION_ with __func__ in the gcc-specific header.
1430 Example Code and Data Size: These are the sizes for the OS-independent
1431 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1432 debug version of the code includes the debug output trace mechanism and
1433 has a much larger code and data size.
1436 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
1437 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
1439 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
1440 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
1443 2) iASL Compiler/Disassembler and Tools:
1445 iASL: Implemented wildcard support for the -e option. This simplifies use
1446 when there are many SSDTs that must be included to resolve external
1448 declarations. ACPICA BZ 1041. Example:
1449 iasl -e ssdt*.dat -d dsdt.dat
1451 AcpiExec: Add history/line-editing for Unix/Linux systems. This change
1452 adds a portable module that implements full history and limited line
1453 editing for Unix and Linux systems. It does not use readline() due to
1454 portability issues. Instead it uses the POSIX termio interface to put the
1455 terminal in raw input mode so that the various special keys can be
1457 (such as up/down-arrow for history support and left/right-arrow for line
1458 editing). Uses the existing debugger history mechanism. ACPICA BZ 1036.
1460 AcpiXtract: Add support to handle (ignore) "empty" lines containing only
1461 one or more spaces. This provides compatible with early or different
1462 versions of the AcpiDump utility. ACPICA BZ 1044.
1464 AcpiDump: Do not ignore tables that contain only an ACPI table header.
1465 Apparently, some BIOSs create SSDTs that contain an ACPI table header but
1466 no other data. This change adds support to dump these tables. Any tables
1467 shorter than the length of an ACPI table header remain in error (an error
1468 message is emitted). Reported by Yi Li.
1470 Debugger: Echo actual command along with the "unknown command" message.
1472 ----------------------------------------
1473 23 August 2013. Summary of changes for version 20130823:
1475 1) ACPICA kernel-resident subsystem:
1477 Implemented support for host-installed System Control Interrupt (SCI)
1478 handlers. Certain ACPI functionality requires the host to handle raw
1479 SCIs. For example, the "SCI Doorbell" that is defined for memory power
1480 state support requires the host device driver to handle SCIs to examine
1481 if the doorbell has been activated. Multiple SCI handlers can be
1482 installed to allow for future expansion. New external interfaces are
1483 AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for
1484 details. Lv Zheng, Bob Moore. ACPICA BZ 1032.
1486 Operation region support: Never locally free the handler "context"
1487 pointer. This change removes some dangerous code that attempts to free
1488 the handler context pointer in some (rare) circumstances. The owner of
1489 the handler owns this pointer and the ACPICA code should never touch it.
1490 Although not seen to be an issue in any kernel, it did show up as a
1491 problem (fault) under AcpiExec. Also, set the internal storage field for
1492 the context pointer to zero when the region is deactivated, simply for
1493 sanity. David Box. ACPICA BZ 1039.
1495 AcpiRead: On error, do not modify the return value target location. If an
1496 error happens in the middle of a split 32/32 64-bit I/O operation, do not
1497 modify the target of the return value pointer. Makes the code consistent
1498 with the rest of ACPICA. Bjorn Helgaas.
1500 Example Code and Data Size: These are the sizes for the OS-independent
1501 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1502 debug version of the code includes the debug output trace mechanism and
1503 has a much larger code and data size.
1506 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
1507 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
1509 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
1510 Debug Version: 185.4K Code, 77.1K Data, 262.5K Total
1513 2) iASL Compiler/Disassembler and Tools:
1515 AcpiDump: Implemented several new features and fixed some problems:
1516 1) Added support to dump the RSDP, RSDT, and XSDT tables.
1517 2) Added support for multiple table instances (SSDT, UEFI).
1518 3) Added option to dump "customized" (overridden) tables (-c).
1519 4) Fixed a problem where some table filenames were improperly
1521 5) Improved some error messages, removed some unnecessary messages.
1523 iASL: Implemented additional support for disassembly of ACPI tables that
1524 contain invocations of external control methods. The -fe<file> option
1525 allows the import of a file that specifies the external methods along
1526 with the required number of arguments for each -- allowing for the
1527 correct disassembly of the table. This is a workaround for a limitation
1528 of AML code where the disassembler often cannot determine the number of
1529 arguments required for an external control method and generates incorrect
1530 ASL code. See the iASL reference for details. ACPICA BZ 1030.
1532 Debugger: Implemented a new command (paths) that displays the full
1533 pathnames (namepaths) and object types of all objects in the namespace.
1534 This is an alternative to the namespace command.
1536 Debugger: Implemented a new command (sci) that invokes the SCI dispatch
1537 mechanism and any installed handlers.
1539 iASL: Fixed a possible segfault for "too many parent prefixes" condition.
1540 This can occur if there are too many parent prefixes in a namepath (for
1541 example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035.
1543 Application OSLs: Set the return value for the PCI read functions. These
1544 functions simply return AE_OK, but should set the return value to zero
1545 also. This change implements this. ACPICA BZ 1038.
1547 Debugger: Prevent possible command line buffer overflow. Increase the
1548 size of a couple of the debugger line buffers, and ensure that overflow
1549 cannot happen. ACPICA BZ 1037.
1551 iASL: Changed to abort immediately on serious errors during the parsing
1552 phase. Due to the nature of ASL, there is no point in attempting to
1553 compile these types of errors, and they typically end up causing a
1554 cascade of hundreds of errors which obscure the original problem.
1556 ----------------------------------------
1557 25 July 2013. Summary of changes for version 20130725:
1559 1) ACPICA kernel-resident subsystem:
1561 Fixed a problem with the DerefOf operator where references to FieldUnits
1562 and BufferFields incorrectly returned the parent object, not the actual
1563 value of the object. After this change, a dereference of a FieldUnit
1564 reference results in a read operation on the field to get the value, and
1565 likewise, the appropriate BufferField value is extracted from the target
1568 Fixed a problem where the _WAK method could cause a fault under these
1569 circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK
1570 method returned no value. The problem is rarely seen because most kernels
1571 run ACPICA in slack mode.
1573 For the DerefOf operator, a fatal error now results if an attempt is made
1574 to dereference a reference (created by the Index operator) to a NULL
1575 package element. Provides compatibility with other ACPI implementations,
1576 and this behavior will be added to a future version of the ACPI
1579 The ACPI Power Management Timer (defined in the FADT) is now optional.
1580 This provides compatibility with other ACPI implementations and will
1581 appear in the next version of the ACPI specification. If there is no PM
1582 Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of
1583 zero in the FADT indicates no PM timer.
1585 Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This
1586 allows the host to globally enable/disable all vendor strings, all
1587 feature strings, or both. Intended to be primarily used for debugging
1588 purposes only. Lv Zheng.
1590 Expose the collected _OSI data to the host via a global variable. This
1591 data tracks the highest level vendor ID that has been invoked by the BIOS
1592 so that the host (and potentially ACPICA itself) can change behaviors
1593 based upon the age of the BIOS.
1595 Example Code and Data Size: These are the sizes for the OS-independent
1596 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1597 debug version of the code includes the debug output trace mechanism and
1598 has a much larger code and data size.
1601 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
1602 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
1604 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
1605 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
1608 2) iASL Compiler/Disassembler and Tools:
1610 iASL: Created the following enhancements for the -so option (create
1612 1)Add offsets for the last nameseg in each namepath for every supported
1614 2)Add support for Processor, Device, Thermal Zone, and Scope objects
1615 3)Add the actual AML opcode for the parent object of every supported
1617 4)Add support for the ZERO/ONE/ONES AML opcodes for integer objects
1619 Disassembler: Emit all unresolved external symbols in a single block.
1620 These are external references to control methods that could not be
1621 resolved, and thus, the disassembler had to make a guess at the number of
1624 iASL: The argument to the -T option (create table template) is now
1625 optional. If not specified, the default table is a DSDT, typically the
1628 ----------------------------------------
1629 26 June 2013. Summary of changes for version 20130626:
1631 1) ACPICA kernel-resident subsystem:
1633 Fixed an issue with runtime repair of the _CST object. Null or invalid
1634 elements were not always removed properly. Lv Zheng.
1636 Removed an arbitrary restriction of 256 GPEs per GPE block (such as the
1637 FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device,
1638 the maximum number of GPEs is 1016. Use of multiple GPE block devices
1639 makes the system-wide number of GPEs essentially unlimited.
1641 Example Code and Data Size: These are the sizes for the OS-independent
1642 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1643 debug version of the code includes the debug output trace mechanism and
1644 has a much larger code and data size.
1647 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
1648 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
1650 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
1651 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
1654 2) iASL Compiler/Disassembler and Tools:
1656 Portable AcpiDump: Implemented full support for the Linux and FreeBSD
1657 hosts. Now supports Linux, FreeBSD, and Windows.
1659 Disassembler: Added some missing types for the HEST and EINJ tables: "Set
1660 Error Type With Address", "CMCI", "MCE", and "Flush Cacheline".
1662 iASL/Preprocessor: Implemented full support for nested
1663 #if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks.
1665 Disassembler: Expanded maximum output string length to 64K. Was 256 bytes
1666 max. The original purpose of this constraint was to limit the amount of
1667 debug output. However, the string function in question (UtPrintString) is
1668 now used for the disassembler also, where 256 bytes is insufficient.
1669 Reported by RehabMan@GitHub.
1671 iASL/DataTables: Fixed some problems and issues with compilation of DMAR
1672 tables. ACPICA BZ 999. Lv Zheng.
1674 iASL: Fixed a couple of error exit issues that could result in a "Could
1675 not delete <file>" message during ASL compilation.
1677 AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though
1678 the actual signatures for these tables are "FACP" and "APIC",
1681 AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI
1682 tables are allowed to have multiple instances.
1684 ----------------------------------------
1685 17 May 2013. Summary of changes for version 20130517:
1687 1) ACPICA kernel-resident subsystem:
1689 Fixed a regression introduced in version 20130328 for _INI methods. This
1690 change fixes a problem introduced in 20130328 where _INI methods are no
1691 longer executed properly because of a memory block that was not
1692 initialized correctly. ACPICA BZ 1016. Tomasz Nowicki
1693 <tomasz.nowicki@linaro.org>.
1695 Fixed a possible problem with the new extended sleep registers in the
1697 5.0 FADT. Do not use these registers (even if populated) unless the HW-
1698 reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ
1701 Implemented return value repair code for _CST predefined objects: Sort
1703 list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng.
1705 Implemented a debug-only option to disable loading of SSDTs from the
1706 RSDT/XSDT during ACPICA initialization. This can be useful for debugging
1707 ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in
1708 acglobal.h - ACPICA BZ 1005. Lv Zheng.
1710 Fixed some issues in the ACPICA initialization and termination code:
1711 Tomasz Nowicki <tomasz.nowicki@linaro.org>
1712 1) Clear events initialized flag upon event component termination. ACPICA
1714 2) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018.
1715 3) Delete global lock pending lock during termination. ACPICA BZ 1012.
1716 4) Clear debug buffer global on termination to prevent possible multiple
1717 delete. ACPICA BZ 1010.
1719 Standardized all switch() blocks across the entire source base. After
1721 years, different formatting for switch() had crept in. This change makes
1722 the formatting of every switch block identical. ACPICA BZ 997. Chao Guan.
1724 Split some files to enhance ACPICA modularity and configurability:
1725 1) Split buffer dump routines into utilities/utbuffer.c
1726 2) Split internal error message routines into utilities/uterror.c
1727 3) Split table print utilities into tables/tbprint.c
1728 4) Split iASL command-line option processing into asloptions.c
1730 Makefile enhancements:
1731 1) Support for all new files above.
1732 2) Abort make on errors from any subcomponent. Chao Guan.
1733 3) Add build support for Apple Mac OS X. Liang Qi.
1735 Example Code and Data Size: These are the sizes for the OS-independent
1736 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1737 debug version of the code includes the debug output trace mechanism and
1738 has a much larger code and data size.
1741 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
1742 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
1744 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
1745 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
1748 2) iASL Compiler/Disassembler and Tools:
1750 New utility: Implemented an easily portable version of the acpidump
1751 utility to extract ACPI tables from the system (or a file) in an ASCII
1753 dump format. The top-level code implements the various command line
1754 options, file I/O, and table dump routines. To port to a new host, only
1755 three functions need to be implemented to get tables -- since this
1756 functionality is OS-dependent. See the tools/acpidump/apmain.c module and
1757 the ACPICA reference for porting instructions. ACPICA BZ 859. Notes:
1758 1) The Windows version obtains the ACPI tables from the Registry.
1759 2) The Linux version is under development.
1760 3) Other hosts - If an OS-dependent module is submitted, it will be
1761 distributed with ACPICA.
1763 iASL: Fixed a regression for -D preprocessor option (define symbol). A
1764 restructuring/change to the initialization sequence caused this option to
1765 no longer work properly.
1767 iASL: Implemented a mechanism to disable specific warnings and remarks.
1768 Adds a new command line option, "-vw <messageid> as well as "#pragma
1769 disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore.
1771 iASL: Fix for too-strict package object validation. The package object
1772 validation for return values from the predefined names is a bit too
1773 strict, it does not allow names references within the package (which will
1774 be resolved at runtime.) These types of references cannot be validated at
1775 compile time. This change ignores named references within package objects
1776 for names that return or define static packages.
1778 Debugger: Fixed the 80-character command line limitation for the History
1779 command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan.
1781 iASL: Added control method and package support for the -so option
1782 (generates AML offset table for BIOS support.)
1784 iASL: issue a remark if a non-serialized method creates named objects. If
1785 a thread blocks within the method for any reason, and another thread
1786 enters the method, the method will fail because an attempt will be made
1788 create the same (named) object twice. In this case, issue a remark that
1789 the method should be marked serialized. NOTE: may become a warning later.
1792 ----------------------------------------
1793 18 April 2013. Summary of changes for version 20130418:
1795 1) ACPICA kernel-resident subsystem:
1797 Fixed a possible buffer overrun during some rare but specific field unit
1798 read operations. This overrun can only happen if the DSDT version is 1 --
1799 meaning that all AML integers are 32 bits -- and the field length is
1800 between 33 and 55 bits long. During the read, an internal buffer object
1802 created for the field unit because the field is larger than an integer
1804 bits). However, in this case, the buffer will be incorrectly written
1805 beyond the end because the buffer length is less than the internal
1807 of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes
1808 long, but a full 8 bytes will be written.
1810 Updated the Embedded Controller "orphan" _REG method support. This refers
1811 to _REG methods under the EC device that have no corresponding operation
1812 region. This is allowed by the ACPI specification. This update removes a
1813 dependency on the existence an ECDT table. It will execute an orphan _REG
1814 method as long as the operation region handler for the EC is installed at
1815 the EC device node and not the namespace root. Rui Zhang (original
1816 update), Bob Moore (update/integrate).
1818 Implemented run-time argument typechecking for all predefined ACPI names
1819 (_STA, _BIF, etc.) This change performs object typechecking on all
1820 incoming arguments for all predefined names executed via
1821 AcpiEvaluateObject. This ensures that ACPI-related device drivers are
1822 passing correct object types as well as the correct number of arguments
1823 (therefore identifying any issues immediately). Also, the ASL/namespace
1824 definition of the predefined name is checked against the ACPI
1825 specification for the proper argument count. Adds one new file,
1828 Changed an exception code for the ASL UnLoad() operator. Changed the
1829 exception code for the case where the input DdbHandle is invalid, from
1830 AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE.
1832 Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the
1833 global makefile. The use of this flag causes compiler errors on earlier
1834 versions of GCC, so it has been removed for compatibility.
1836 Miscellaneous cleanup:
1837 1) Removed some unused/obsolete macros
1838 2) Fixed a possible memory leak in the _OSI support
1839 3) Removed an unused variable in the predefined name support
1840 4) Windows OSL: remove obsolete reference to a memory list field
1842 Example Code and Data Size: These are the sizes for the OS-independent
1843 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1844 debug version of the code includes the debug output trace mechanism and
1845 has a much larger code and data size.
1848 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
1849 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
1851 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
1852 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
1855 2) iASL Compiler/Disassembler and Tools:
1857 AcpiExec: Added installation of a handler for the SystemCMOS address
1858 space. This prevents control method abort if a method accesses this
1861 AcpiExec: Added support for multiple EC devices, and now install EC
1862 operation region handler(s) at the actual EC device instead of the
1863 namespace root. This reflects the typical behavior of host operating
1866 AcpiExec: Updated to ensure that all operation region handlers are
1867 installed before the _REG methods are executed. This prevents a _REG
1868 method from aborting if it accesses an address space has no handler.
1869 AcpiExec installs a handler for every possible address space.
1871 Debugger: Enhanced the "handlers" command to display non-root handlers.
1872 This change enhances the handlers command to display handlers associated
1873 with individual devices throughout the namespace, in addition to the
1874 currently supported display of handlers associated with the root
1878 ASL Test Suite: Several test suite errors have been identified and
1879 resolved, reducing the total error count during execution. Chao Guan.
1881 ----------------------------------------
1882 28 March 2013. Summary of changes for version 20130328:
1884 1) ACPICA kernel-resident subsystem:
1886 Fixed several possible race conditions with the internal object reference
1887 counting mechanism. Some of the external ACPICA interfaces update object
1888 reference counts without holding the interpreter or namespace lock. This
1889 change adds a spinlock to protect reference count updates on the internal
1890 ACPICA objects. Reported by and with assistance from Andriy Gapon
1893 FADT support: Removed an extraneous warning for very large GPE register
1894 sets. This change removes a size mismatch warning if the legacy length
1895 field for a GPE register set is larger than the 64-bit GAS structure can
1896 accommodate. GPE register sets can be larger than the 255-bit width
1897 limitation of the GAS structure. Linn Crosetto (linn@hp.com).
1899 _OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error
1900 return from this interface. Handles a possible timeout case if
1901 ACPI_WAIT_FOREVER is modified by the host to be a value less than
1902 "forever". Jung-uk Kim.
1904 Predefined name support: Add allowed/required argument type information
1906 the master predefined info table. This change adds the infrastructure to
1907 enable typechecking on incoming arguments for all predefined
1908 methods/objects. It does not actually contain the code that will fully
1909 utilize this information, this is still under development. Also condenses
1910 some duplicate code for the predefined names into a new module,
1911 utilities/utpredef.c
1913 Example Code and Data Size: These are the sizes for the OS-independent
1914 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1915 debug version of the code includes the debug output trace mechanism and
1916 has a much larger code and data size.
1919 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
1920 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
1922 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
1923 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
1926 2) iASL Compiler/Disassembler and Tools:
1928 iASL: Implemented a new option to simplify the development of ACPI-
1930 BIOS code. Adds support for a new "offset table" output file. The -so
1931 option will create a C table containing the AML table offsets of various
1932 named objects in the namespace so that BIOS code can modify them easily
1934 boot time. This can simplify BIOS runtime code by eliminating expensive
1935 searches for "magic values", enhancing boot times and adding greater
1936 reliability. With assistance from Lee Hamel.
1938 iASL: Allow additional predefined names to return zero-length packages.
1939 Now, all predefined names that are defined by the ACPI specification to
1940 return a "variable-length package of packages" are allowed to return a
1941 zero length top-level package. This allows the BIOS to tell the host that
1942 the requested feature is not supported, and supports existing BIOS/ASL
1945 iASL: Changed the "result not used" warning to an error. This is the case
1946 where an ASL operator is effectively a NOOP because the result of the
1947 operation is not stored anywhere. For example:
1949 There is no target (missing 3rd argument), nor is the function return
1950 value used. This is potentially a very serious problem -- since the code
1951 was probably intended to do something, but for whatever reason, the value
1952 was not stored. Therefore, this issue has been upgraded from a warning to
1955 AcpiHelp: Added allowable/required argument types to the predefined names
1956 info display. This feature utilizes the recent update to the predefined
1957 names table (above).
1959 ----------------------------------------
1960 14 February 2013. Summary of changes for version 20130214:
1962 1) ACPICA Kernel-resident Subsystem:
1964 Fixed a possible regression on some hosts: Reinstated the safe return
1965 macros (return_ACPI_STATUS, etc.) that ensure that the argument is
1966 evaluated only once. Although these macros are not needed for the ACPICA
1967 code itself, they are often used by ACPI-related host device drivers
1969 the safe feature may be necessary.
1971 Fixed several issues related to the ACPI 5.0 reduced hardware support
1972 (SOC): Now ensure that if the platform declares itself as hardware-
1974 via the FADT, the following functions become NOOPs (and always return
1975 AE_OK) because ACPI is always enabled by definition on these machines:
1981 Dynamic Object Repair: Implemented additional runtime repairs for
1982 predefined name return values. Both of these repairs can simplify code in
1983 the related device drivers that invoke these methods:
1984 1) For the _STR and _MLS names, automatically repair/convert an ASCII
1985 string to a Unicode buffer.
1986 2) For the _CRS, _PRS, and _DMA names, return a resource descriptor with
1988 lone end tag descriptor in the following cases: A Return(0) was executed,
1989 a null buffer was returned, or no object at all was returned (non-slack
1990 mode only). Adds a new file, nsconvert.c
1991 ACPICA BZ 998. Bob Moore, Lv Zheng.
1993 Resource Manager: Added additional code to prevent possible infinite
1995 while traversing corrupted or ill-formed resource template buffers. Check
1996 for zero-length resource descriptors in all code that loops through
1997 resource templates (the length field is used to index through the
1998 template). This change also hardens the external AcpiWalkResources and
1999 AcpiWalkResourceBuffer interfaces.
2001 Local Cache Manager: Enhanced the main data structure to eliminate an
2002 unnecessary mechanism to access the next object in the list. Actually
2003 provides a small performance enhancement for hosts that use the local
2004 ACPICA cache manager. Jung-uk Kim.
2006 Example Code and Data Size: These are the sizes for the OS-independent
2007 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2008 debug version of the code includes the debug output trace mechanism and
2009 has a much larger code and data size.
2012 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
2013 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
2015 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
2016 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
2019 2) iASL Compiler/Disassembler and Tools:
2021 iASL/Disassembler: Fixed several issues with the definition of the ACPI
2022 5.0 RASF table (RAS Feature Table). This change incorporates late changes
2023 that were made to the ACPI 5.0 specification.
2025 iASL/Disassembler: Added full support for the following new ACPI tables:
2026 1) The MTMR table (MID Timer Table)
2027 2) The VRTC table (Virtual Real Time Clock Table).
2028 Includes header file, disassembler, table compiler, and template support
2031 iASL: Implemented compile-time validation of package objects returned by
2032 predefined names. This new feature validates static package objects
2033 returned by the various predefined names defined to return packages. Both
2034 object types and package lengths are validated, for both parent packages
2035 and sub-packages, if any. The code is similar in structure and behavior
2037 the runtime repair mechanism within the AML interpreter and uses the
2038 existing predefined name information table. Adds a new file, aslprepkg.c.
2041 iASL: Implemented auto-detection of binary ACPI tables for disassembly.
2042 This feature detects a binary file with a valid ACPI table header and
2043 invokes the disassembler automatically. Eliminates the need to
2044 specifically invoke the disassembler with the -d option. ACPICA BZ 862.
2046 iASL/Disassembler: Added several warnings for the case where there are
2047 unresolved control methods during the disassembly. This can potentially
2048 cause errors when the output file is compiled, because the disassembler
2049 assumes zero method arguments in these cases (it cannot determine the
2050 actual number of arguments without resolution/definition of the method).
2052 Debugger: Added support to display all resources with a single command.
2053 Invocation of the resources command with no arguments will now display
2055 resources within the current namespace.
2057 AcpiHelp: Added descriptive text for each ACPICA exception code displayed
2060 ----------------------------------------
2061 17 January 2013. Summary of changes for version 20130117:
2063 1) ACPICA Kernel-resident Subsystem:
2065 Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to
2066 return either 1 or 2 integers. Although the ACPI spec defines the \_Sx
2067 objects to return a package containing one integer, most BIOS code
2069 two integers and the previous code reflects that. However, we also need
2071 support BIOS code that actually implements to the ACPI spec, and this
2072 change reflects this.
2074 Fixed two issues with the ACPI_DEBUG_PRINT macros:
2075 1) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for
2076 C compilers that require this support.
2077 2) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since
2078 ACPI_DEBUG is already used by many of the various hosts.
2080 Updated all ACPICA copyrights and signons to 2013. Added the 2013
2081 copyright to all module headers and signons, including the standard Linux
2082 header. This affects virtually every file in the ACPICA core subsystem,
2083 iASL compiler, all ACPICA utilities, and the test suites.
2085 Example Code and Data Size: These are the sizes for the OS-independent
2086 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2087 debug version of the code includes the debug output trace mechanism and
2088 has a much larger code and data size.
2091 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
2092 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
2094 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
2095 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
2098 2) iASL Compiler/Disassembler and Tools:
2100 Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and
2101 prevent a possible fault on some hosts. Some C libraries modify the arg
2102 pointer parameter to vfprintf making it difficult to call it twice in the
2103 AcpiOsVprintf function. Use a local buffer to workaround this issue. This
2104 does not affect the Windows OSL since the Win C library does not modify
2105 the arg pointer. Chao Guan, Bob Moore.
2107 iASL: Fixed a possible infinite loop when the maximum error count is
2108 reached. If an output file other than the .AML file is specified (such as
2109 a listing file), and the maximum number of errors is reached, do not
2110 attempt to flush data to the output file(s) as the compiler is aborting.
2111 This can cause an infinite loop as the max error count code essentially
2112 keeps calling itself.
2114 iASL/Disassembler: Added an option (-in) to ignore NOOP
2116 Implemented for both the compiler and the disassembler. Often, the NOOP
2117 opcode is used as padding for packages that are changed dynamically by
2119 BIOS. When disassembled and recompiled, these NOOPs will cause syntax
2120 errors. This option causes the disassembler to ignore all NOOP opcodes
2121 (0xA3), and it also causes the compiler to ignore all ASL source code
2125 Debugger: Enhanced the Sleep command to execute all sleep states. This
2126 change allows Sleep to be invoked with no arguments and causes the
2127 debugger to execute all of the sleep states, 0-5, automatically.
2129 ----------------------------------------
2130 20 December 2012. Summary of changes for version 20121220:
2132 1) ACPICA Kernel-resident Subsystem:
2134 Implemented a new interface, AcpiWalkResourceBuffer. This interface is an
2135 alternate entry point for AcpiWalkResources and improves the usability of
2136 the resource manager by accepting as input a buffer containing the output
2137 of either a _CRS, _PRS, or _AEI method. The key functionality is that the
2138 input buffer is not deleted by this interface so that it can be used by
2139 the host later. See the ACPICA reference for details.
2141 Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table
2142 (DSDT version < 2). The constant will be truncated and this warning
2143 reflects that behavior.
2145 Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ,
2146 ExtendedInterrupt, and GpioInt descriptors. This change adds support to
2147 both get and set the new wake bit in these descriptors, separately from
2148 the existing share bit. Reported by Aaron Lu.
2150 Interpreter: Fix Store() when an implicit conversion is not possible. For
2151 example, in the cases such as a store of a string to an existing package
2152 object, implement the store as a CopyObject(). This is a small departure
2153 from the ACPI specification which states that the control method should
2155 aborted in this case. However, the ASLTS suite depends on this behavior.
2157 Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT
2158 macros: check if debug output is currently enabled as soon as possible to
2159 minimize performance impact if debug is in fact not enabled.
2161 Source code restructuring: Cleanup to improve modularity. The following
2162 new files have been added: dbconvert.c, evhandler.c, nsprepkg.c,
2163 psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c.
2164 Associated makefiles and project files have been updated.
2166 Changed an exception code for LoadTable operator. For the case where one
2167 of the input strings is too long, change the returned exception code from
2168 AE_BAD_PARAMETER to AE_AML_STRING_LIMIT.
2170 Fixed a possible memory leak in dispatcher error path. On error, delete
2171 the mutex object created during method mutex creation. Reported by
2172 tim.gardner@canonical.com.
2174 Example Code and Data Size: These are the sizes for the OS-independent
2175 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2176 debug version of the code includes the debug output trace mechanism and
2177 has a much larger code and data size.
2180 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
2181 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
2183 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
2184 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
2187 2) iASL Compiler/Disassembler and Tools:
2189 iASL: Disallow a method call as argument to the ObjectType ASL operator.
2190 This change tracks an errata to the ACPI 5.0 document. The AML grammar
2191 will not allow the interpreter to differentiate between a method and a
2192 method invocation when these are used as an argument to the ObjectType
2193 operator. The ACPI specification change is to disallow a method
2195 (UserTerm) for the ObjectType operator.
2197 Finish support for the TPM2 and CSRT tables in the headers, table
2198 compiler, and disassembler.
2200 Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout
2201 always expires immediately if the semaphore is not available. The
2203 code was using a relative-time timeout, but sem_timedwait requires the
2205 of an absolute time.
2207 iASL: Added a remark if the Timer() operator is used within a 32-bit
2208 table. This operator returns a 64-bit time value that will be truncated
2209 within a 32-bit table.
2211 iASL Source code restructuring: Cleanup to improve modularity. The
2212 following new files have been added: aslhex.c, aslxref.c, aslnamesp.c,
2213 aslmethod.c, and aslfileio.c. Associated makefiles and project files have
2217 ----------------------------------------
2218 14 November 2012. Summary of changes for version 20121114:
2220 1) ACPICA Kernel-resident Subsystem:
2222 Implemented a performance enhancement for ACPI/AML Package objects. This
2223 change greatly increases the performance of Package objects within the
2224 interpreter. It changes the processing of reference counts for packages
2226 optimizing for the most common case where the package sub-objects are
2227 either Integers, Strings, or Buffers. Increases the overall performance
2229 the ASLTS test suite by 1.5X (Increases the Slack Mode performance by
2231 Chao Guan. ACPICA BZ 943.
2233 Implemented and deployed common macros to extract flag bits from resource
2234 descriptors. Improves readability and maintainability of the code. Fixes
2236 problem with the UART serial bus descriptor for the number of data bits
2237 flags (was incorrectly 2 bits, should be 3).
2239 Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation
2240 of the macros and changed the SETx macros to the style of (destination,
2241 source). Also added ACPI_CASTx companion macros. Lv Zheng.
2243 Example Code and Data Size: These are the sizes for the OS-independent
2244 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2245 debug version of the code includes the debug output trace mechanism and
2246 has a much larger code and data size.
2249 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
2250 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
2252 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
2253 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
2256 2) iASL Compiler/Disassembler and Tools:
2258 Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change
2259 adds the ShareAndWake and ExclusiveAndWake flags which were added to the
2260 Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986.
2262 Disassembler: Fixed a problem with external declaration generation. Fixes
2263 a problem where an incorrect pathname could be generated for an external
2264 declaration if the original reference to the object includes leading
2265 carats (^). ACPICA BZ 984.
2267 Debugger: Completed a major update for the Disassemble<method> command.
2268 This command was out-of-date and did not properly disassemble control
2269 methods that had any reasonable complexity. This fix brings the command
2271 to the same level as the rest of the disassembler. Adds one new file,
2272 dmdeferred.c, which is existing code that is now common with the main
2273 disassembler and the debugger disassemble command. ACPICA MZ 978.
2275 iASL: Moved the parser entry prototype to avoid a duplicate declaration.
2276 Newer versions of Bison emit this prototype, so moved the prototype out
2278 the iASL header to where it is actually used in order to avoid a
2282 iASL/Tools: Standardized use of the stream I/O functions:
2283 1) Ensure check for I/O error after every fopen/fread/fwrite
2284 2) Ensure proper order of size/count arguments for fread/fwrite
2285 3) Use test of (Actual != Requested) after all fwrite, and most fread
2286 4) Standardize I/O error messages
2287 Improves reliability and maintainability of the code. Bob Moore, Lv
2291 Disassembler: Prevent duplicate External() statements. During generation
2292 of external statements, detect similar pathnames that are actually
2293 duplicates such as these:
2296 Remove all leading '\' characters from pathnames during the external
2297 statement generation so that duplicates will be detected and tossed.
2300 Tools: Replace low-level I/O with stream I/O functions. Replace
2301 open/read/write/close with the stream I/O equivalents
2302 fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob
2305 AcpiBin: Fix for the dump-to-hex function. Now correctly output the table
2306 name header so that AcpiXtract recognizes the output file/table.
2308 iASL: Remove obsolete -2 option flag. Originally intended to force the
2309 compiler/disassembler into an ACPI 2.0 mode, this was never implemented
2310 and the entire concept is now obsolete.
2312 ----------------------------------------
2313 18 October 2012. Summary of changes for version 20121018:
2316 1) ACPICA Kernel-resident Subsystem:
2318 Updated support for the ACPI 5.0 MPST table. Fixes some problems
2319 introduced by late changes to the table as it was added to the ACPI 5.0
2320 specification. Includes header, disassembler, and data table compiler
2321 support as well as a new version of the MPST template.
2323 AcpiGetObjectInfo: Enhanced the device object support to include the ACPI
2324 5.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID
2325 methods: _HID, _CID, and _UID.
2327 Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed
2328 ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent
2329 name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId)
2330 names for their various drivers. Affects the AcpiGetObjectInfo external
2331 interface, and other internal interfaces as well.
2333 Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME.
2334 This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME
2335 on machines that support non-aligned transfers. Optimizes for this case
2336 rather than using a strncpy. With assistance from Zheng Lv.
2338 Resource Manager: Small fix for buffer size calculation. Fixed a one byte
2339 error in the output buffer calculation. Feng Tang. ACPICA BZ 849.
2341 Added a new debug print message for AML mutex objects that are force-
2342 released. At control method termination, any currently acquired mutex
2343 objects are force-released. Adds a new debug-only message for each one
2346 Audited/updated all ACPICA return macros and the function debug depth
2347 counter: 1) Ensure that all functions that use the various TRACE macros
2348 also use the appropriate ACPICA return macros. 2) Ensure that all normal
2349 return statements surround the return expression (value) with parens to
2350 ensure consistency across the ACPICA code base. Guan Chao, Tang Feng,
2351 Zheng Lv, Bob Moore. ACPICA Bugzilla 972.
2353 Global source code changes/maintenance: All extra lines at the start and
2354 end of each source file have been removed for consistency. Also, within
2355 comments, all new sentences start with a single space instead of a double
2356 space, again for consistency across the code base.
2358 Example Code and Data Size: These are the sizes for the OS-independent
2359 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2360 debug version of the code includes the debug output trace mechanism and
2361 has a much larger code and data size.
2364 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
2365 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
2367 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
2368 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
2371 2) iASL Compiler/Disassembler and Tools:
2373 AcpiExec: Improved the algorithm used for memory leak/corruption
2374 detection. Added some intelligence to the code that maintains the global
2375 list of allocated memory. The list is now ordered by allocated memory
2376 address, significantly improving performance. When running AcpiExec on
2377 the ASLTS test suite, speed improvements of 3X to 5X are seen, depending
2378 on the platform and/or the environment. Note, this performance
2379 enhancement affects the AcpiExec utility only, not the kernel-resident
2382 Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For
2383 the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix
2384 incorrect table offset reported for invalid opcodes. Report the original
2385 32-bit value for bad ACPI_NAMEs (as well as the repaired name.)
2387 Disassembler: Enhanced the -vt option to emit the binary table data in
2388 hex format to assist with debugging.
2390 Fixed a potential filename buffer overflow in osunixdir.c. Increased the
2391 size of file structure. Colin Ian King.
2393 ----------------------------------------
2394 13 September 2012. Summary of changes for version 20120913:
2397 1) ACPICA Kernel-resident Subsystem:
2399 ACPI 5.0: Added two new notify types for the Hardware Error Notification
2400 Structure within the Hardware Error Source Table (HEST) table -- CMCI(5)
2404 Table Manager: Merged/removed duplicate code in the root table resize
2405 functions. One function is external, the other is internal. Lv Zheng,
2409 Makefiles: Completely removed the obsolete "Linux" makefiles under
2410 acpica/generate/linux. These makefiles are obsolete and have been
2413 the generic unix makefiles under acpica/generate/unix.
2415 Makefiles: Ensure that binary files always copied properly. Minor rule
2417 to ensure that the final binary output files are always copied up to the
2418 appropriate binary directory (bin32 or bin64.)
2420 Example Code and Data Size: These are the sizes for the OS-independent
2421 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2423 version of the code includes the debug output trace mechanism and has a
2425 larger code and data size.
2428 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
2429 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
2431 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
2432 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
2435 2) iASL Compiler/Disassembler and Tools:
2437 Disassembler: Fixed a possible fault during the disassembly of resource
2438 descriptors when a second parse is required because of the invocation of
2439 external control methods within the table. With assistance from
2440 adq@lidskialf.net. ACPICA BZ 976.
2442 iASL: Fixed a namepath optimization problem. An error can occur if the
2444 node that contains the namepath to be optimized does not have a parent
2446 that is a named object. This change fixes the problem.
2448 iASL: Fixed a regression where the AML file is not deleted on errors. The
2450 output file should be deleted if there are any errors during the
2453 only exception is if the -f (force output) option is used. ACPICA BZ 974.
2455 iASL: Added a feature to automatically increase internal line buffer
2457 Via realloc(), automatically increase the internal line buffer sizes as
2458 necessary to support very long source code lines. The current version of
2460 preprocessor requires a buffer long enough to contain full source code
2462 This change increases the line buffer(s) if the input lines go beyond the
2463 current buffer size. This eliminates errors that occurred when a source
2465 line was longer than the buffer.
2467 iASL: Fixed a problem with constant folding in method declarations. The
2468 SyncLevel term is a ByteConstExpr, and incorrect code would be generated
2470 Type3 opcode was used.
2472 Debugger: Improved command help support. For incorrect argument count,
2474 full help for the command. For help command itself, allow an argument to
2477 Test Suites: Several bug fixes for the ASLTS suite reduces the number of
2478 errors during execution of the suite. Guan Chao.
2480 ----------------------------------------
2481 16 August 2012. Summary of changes for version 20120816:
2484 1) ACPICA Kernel-resident Subsystem:
2486 Removed all use of the deprecated _GTS and _BFS predefined methods. The
2488 (Going To Sleep) and _BFS (Back From Sleep) methods are essentially
2489 deprecated and will probably be removed from the ACPI specification.
2491 does not invoke them, and reportedly never will. The final nail in the
2493 is that the ACPI specification states that these methods must be run with
2494 interrupts off, which is not going to happen in a kernel interpreter.
2496 Linux has removed all use of the methods also. It was discovered that
2497 invoking these functions caused failures on some machines, probably
2499 they were never tested since Windows does not call them. Affects two
2501 interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng.
2504 Implemented support for complex bit-packed buffers returned from the _PLD
2505 (Physical Location of Device) predefined method. Adds a new external
2506 interface, AcpiDecodePldBuffer that parses the buffer into a more usable
2508 structure. Note: C Bitfields cannot be used for this type of predefined
2509 structure since the memory layout of individual bitfields is not defined
2511 the C language. In addition, there are endian concerns where a compiler
2513 change the bitfield ordering based on the machine type. The new ACPICA
2514 interface eliminates these issues, and should be called after _PLD is
2515 executed. ACPICA BZ 954.
2517 Implemented a change to allow a scope change to root (via "Scope (\)")
2519 execution of module-level ASL code (code that is executed at table load
2522 Added the Windows8/Server2012 string for the _OSI method. This change
2525 new _OSI string, "Windows 2012" for both Windows 8 and Windows Server
2528 Added header support for the new ACPI tables DBG2 (Debug Port Table Type
2530 and CSRT (Core System Resource Table).
2532 Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined
2533 names. This simplifies access to the buffers returned by these predefined
2534 names. Adds a new file, include/acbuffer.h. ACPICA BZ 956.
2536 GPE support: Removed an extraneous parameter from the various low-level
2537 internal GPE functions. Tang Feng.
2539 Removed the linux makefiles from the unix packages. The generate/linux
2540 makefiles are obsolete and have been removed from the unix tarball
2542 packages. The replacement makefiles are under generate/unix, and there is
2544 top-level makefile under the main acpica directory. ACPICA BZ 967, 912.
2546 Updates for Unix makefiles:
2547 1) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven.
2548 2) Update linker flags (move to end of command line) for AcpiExec
2552 Split ACPICA initialization functions to new file, utxfinit.c. Split from
2553 utxface.c to improve modularity and reduce file size.
2555 Example Code and Data Size: These are the sizes for the OS-independent
2556 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2557 debug version of the code includes the debug output trace mechanism and
2559 much larger code and data size.
2562 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
2563 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
2565 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
2566 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
2569 2) iASL Compiler/Disassembler and Tools:
2571 iASL: Fixed a problem with constant folding for fixed-length constant
2572 expressions. The constant-folding code was not being invoked for constant
2573 expressions that allow the use of type 3/4/5 opcodes to generate
2575 for expressions such as ByteConstExpr, WordConstExpr, etc. This could
2577 in the generation of invalid AML bytecode. ACPICA BZ 970.
2579 iASL: Fixed a generation issue on newer versions of Bison. Newer versions
2580 apparently automatically emit some of the necessary externals. This
2582 handles these versions in order to eliminate generation warnings.
2584 Disassembler: Added support to decode the DBG2 and CSRT ACPI tables.
2586 Disassembler: Add support to decode _PLD buffers. The decoded buffer
2588 within comments in the output file.
2590 Debugger: Fixed a regression with the "Threads" command where
2591 AE_BAD_PARAMETER was always returned.
2593 ----------------------------------------
2594 11 July 2012. Summary of changes for version 20120711:
2596 1) ACPICA Kernel-resident Subsystem:
2598 Fixed a possible fault in the return package object repair code. Fixes a
2599 problem that can occur when a lone package object is wrapped with an
2601 package object in order to force conformance to the ACPI specification.
2603 affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX,
2607 Removed code to disable/enable bus master arbitration (ARB_DIS bit in the
2608 PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the
2609 ARB_DIS bit must be implemented in the host-dependent C3 processor power
2611 support. Note, ARB_DIS is obsolete and only applies to older chipsets,
2613 Intel and other vendors. (for Intel: ICH4-M and earlier)
2615 This change removes the code to disable/enable bus master arbitration
2617 suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register
2619 resume problems on some machines. The change has been in use for over
2623 Implemented two new external interfaces to support host-directed dynamic
2625 table load and unload. They are intended to simplify the host
2627 of hot-plug support:
2628 AcpiLoadTable: Load an SSDT from a buffer into the namespace.
2629 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the
2631 See the ACPICA reference for additional details. Adds one new file,
2632 components/tables/tbxfload.c
2634 Implemented and deployed two new interfaces for errors and warnings that
2636 known to be caused by BIOS/firmware issues:
2637 AcpiBiosError: Prints "ACPI Firmware Error" message.
2638 AcpiBiosWarning: Prints "ACPI Firmware Warning" message.
2639 Deployed these new interfaces in the ACPICA Table Manager code for ACPI
2641 and FADT errors. Additional deployment to be completed as appropriate in
2643 future. The associated conditional macros are ACPI_BIOS_ERROR and
2644 ACPI_BIOS_WARNING. See the ACPICA reference for additional details.
2649 Implicit notify support: ensure that no memory allocation occurs within a
2650 critical region. This fix moves a memory allocation outside of the time
2652 spinlock is held. Fixes issues on systems that do not allow this
2656 Split exception code utilities and tables into a new file,
2659 Example Code and Data Size: These are the sizes for the OS-independent
2660 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2662 version of the code includes the debug output trace mechanism and has a
2664 larger code and data size.
2667 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
2668 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
2670 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
2671 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
2674 2) iASL Compiler/Disassembler and Tools:
2676 iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead
2680 Debugger: Enhanced the "tables" command to emit additional information
2682 the current set of ACPI tables, including the owner ID and flags decode.
2684 Debugger: Reimplemented the "unload" command to use the new
2685 AcpiUnloadParentTable external interface. This command was disable
2687 due to need for an unload interface.
2689 AcpiHelp: Added a new option to decode ACPICA exception codes. The -e
2691 will decode 16-bit hex status codes (ACPI_STATUS) to name strings.
2693 ----------------------------------------
2694 20 June 2012. Summary of changes for version 20120620:
2697 1) ACPICA Kernel-resident Subsystem:
2699 Implemented support to expand the "implicit notify" feature to allow
2701 devices to be notified by a single GPE. This feature automatically
2703 runtime device notification in the absence of a BIOS-provided GPE control
2704 method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit
2706 provided by ACPICA for Windows compatibility, and is a workaround for
2709 code errors. See the description of the AcpiSetupGpeForWake interface in
2711 APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918.
2713 Changed some comments and internal function names to simplify and ensure
2714 correctness of the Linux code translation. No functional changes.
2716 Example Code and Data Size: These are the sizes for the OS-independent
2717 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2719 version of the code includes the debug output trace mechanism and has a
2721 larger code and data size.
2724 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
2725 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
2727 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
2728 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
2731 2) iASL Compiler/Disassembler and Tools:
2733 Disassembler: Added support to emit short, commented descriptions for the
2735 predefined names in order to improve the readability of the disassembled
2736 output. ACPICA BZ 959. Changes include:
2737 1) Emit descriptions for all standard predefined names (_INI, _STA,
2740 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.)
2741 3) Emit descriptions for the resource descriptor names (_MIN, _LEN,
2744 AcpiSrc: Fixed several long-standing Linux code translation issues.
2746 descriptions in function headers are now translated properly to lower
2749 underscores. ACPICA BZ 961. Also fixes translation problems such as
2755 local_fADT -> local_FADT
2756 execute_oSI -> execute_OSI
2758 iASL: Fixed a problem where null bytes were inadvertently emitted into
2762 iASL: Added the existing debug options to the standard help screen. There
2764 no longer two different help screens. ACPICA BZ 957.
2766 AcpiHelp: Fixed some typos in the various predefined name descriptions.
2768 expand some of the descriptions where appropriate.
2770 iASL: Fixed the -ot option (display compile times/statistics). Was not
2772 properly for standard output; only worked for the debug file case.
2774 ----------------------------------------
2775 18 May 2012. Summary of changes for version 20120518:
2778 1) ACPICA Core Subsystem:
2780 Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is
2782 to block until asynchronous events such as notifies and GPEs have
2784 Within ACPICA, it is only called before a notify or GPE handler is
2785 removed/uninstalled. It also may be useful for the host OS within related
2786 drivers such as the Embedded Controller driver. See the ACPICA reference
2788 additional information. ACPICA BZ 868.
2790 ACPI Tables: Added a new error message for a possible overflow failure
2792 the conversion of FADT 32-bit legacy register addresses to internal
2795 bit GAS structure representation. The GAS has a one-byte "bit length"
2797 thus limiting the register length to 255 bits. ACPICA BZ 953.
2799 Example Code and Data Size: These are the sizes for the OS-independent
2800 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2802 version of the code includes the debug output trace mechanism and has a
2804 larger code and data size.
2807 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
2808 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
2810 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
2811 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
2814 2) iASL Compiler/Disassembler and Tools:
2816 iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL
2818 This keyword was added late in the ACPI 5.0 release cycle and was not
2819 implemented until now.
2821 Disassembler: Added support for Operation Region externals. Adds missing
2822 support for operation regions that are defined in another table, and
2823 referenced locally via a Field or BankField ASL operator. Now generates
2825 correct External statement.
2827 Disassembler: Several additional fixes for the External() statement
2829 related to some ASL operators. Also, order the External() statements
2830 alphabetically in the disassembler output. Fixes the External()
2833 the Create* field, Alias, and Scope operators:
2834 1) Create* buffer field operators - fix type mismatch warning on
2836 2) Alias - implement missing External support
2837 3) Scope - fix to make sure all necessary externals are emitted.
2839 iASL: Improved pathname support. For include files, merge the prefix
2841 with the file pathname and eliminate unnecessary components. Convert
2842 backslashes in all pathnames to forward slashes, for readability. Include
2844 pathname changes affect both #include and Include() type operators.
2846 iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the
2848 of a valid line by inserting a newline and then returning the EOF during
2850 next call to GetNextLine. Prevents the line from being ignored due to EOF
2853 iASL: Implemented some changes to enhance the IDE support (-vi option.)
2855 and Warning messages are now correctly recognized for both the source
2857 browser and the global error and warning counts.
2859 ----------------------------------------
2860 20 April 2012. Summary of changes for version 20120420:
2863 1) ACPICA Core Subsystem:
2865 Implemented support for multiple notify handlers. This change adds
2868 allow multiple system and device notify handlers on Device, Thermal Zone,
2870 Processor objects. This can simplify the host OS notification
2872 Also re-worked and restructured the entire notify support code to
2874 handler installation, handler removal, notify event queuing, and notify
2875 dispatch to handler(s). Note: there can still only be two global notify
2876 handlers - one for system notifies and one for device notifies. There are
2878 changes to the existing handler install/remove interfaces. Lin Ming, Bob
2879 Moore, Rafael Wysocki.
2881 Fixed a regression in the package repair code where the object reference
2882 count was calculated incorrectly. Regression was introduced in the commit
2883 "Support to add Package wrappers".
2885 Fixed a couple possible memory leaks in the AML parser, in the error
2887 path. Jesper Juhl, Lin Ming.
2889 Example Code and Data Size: These are the sizes for the OS-independent
2890 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2891 debug version of the code includes the debug output trace mechanism and
2893 much larger code and data size.
2896 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
2897 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
2899 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
2900 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
2903 2) iASL Compiler/Disassembler and Tools:
2905 iASL: Fixed a problem with the resource descriptor support where the
2907 of the StartDependentFn and StartDependentFnNoPrio descriptors were not
2908 included in cumulative descriptor offset, resulting in incorrect values
2910 resource tags within resource descriptors appearing after a
2912 descriptor. Reported by Petr Vandrovec. ACPICA BZ 949.
2914 iASL and Preprocessor: Implemented full support for the #line directive
2916 correctly track original source file line numbers through the .i
2918 output file - for error and warning messages.
2920 iASL: Expand the allowable byte constants for address space IDs.
2922 the allowable range was 0x80-0xFF (user-defined spaces), now the range is
2923 0x0A-0xFF to allow for custom and new IDs without changing the compiler.
2925 iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948.
2927 iASL: Add option to completely disable the preprocessor (-Pn).
2929 iASL: Now emit all error/warning messages to standard error (stderr) by
2930 default (instead of the previous stdout).
2932 ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch().
2934 for resource descriptor offset fix above. Update/cleanup error output
2935 routines. Enable and send iASL errors/warnings to an error logfile
2936 (error.txt). Send all other iASL output to a logfile (compiler.txt).
2938 several extraneous "unrecognized operator" messages.
2940 ----------------------------------------
2941 20 March 2012. Summary of changes for version 20120320:
2944 1) ACPICA Core Subsystem:
2946 Enhanced the sleep/wake interfaces to optionally execute the _GTS method
2947 (Going To Sleep) and the _BFS method (Back From Sleep). Windows
2949 does not execute these methods, and therefore these methods are often
2950 untested. It has been seen on some systems where the execution of these
2951 methods causes errors and also prevents the machine from entering S5. It
2953 therefore suggested that host operating systems do not execute these
2955 by default. In the future, perhaps these methods can be optionally
2957 based on the age of the system and/or what is the newest version of
2959 that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState
2961 AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin
2964 Fixed a problem where the length of the local/common FADT was set too
2966 The local FADT table length cannot be set to the common length until the
2967 original length has been examined. There is code that checks the table
2969 and sets various fields appropriately. This can affect older machines
2971 early FADT versions. For example, this can cause inadvertent writes to
2973 CST_CNT register. Julian Anastasov.
2975 Fixed a mapping issue related to a physical table override. Use the
2977 mapping mechanism for tables loaded via the physical override OSL
2979 This allows for early mapping before the virtual memory manager is
2981 Thomas Renninger, Bob Moore.
2983 Enhanced the automatic return-object repair code: Repair a common problem
2985 predefined methods that are defined to return a variable-length Package
2987 sub-objects. If there is only one sub-object, some BIOS ASL code
2989 simply returns the single object instead of a Package with one sub-
2991 This new support will repair this error by wrapping a Package object
2993 the original object, creating the correct and expected Package with one
2995 object. Names that can be repaired in this manner include: _ALR, _CSD,
2997 _MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ
3000 Changed the exception code returned for invalid ACPI paths passed as
3001 parameters to external interfaces such as AcpiEvaluateObject. Was
3002 AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME.
3004 Example Code and Data Size: These are the sizes for the OS-independent
3005 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3007 version of the code includes the debug output trace mechanism and has a
3009 larger code and data size.
3012 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
3013 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
3015 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
3016 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
3019 2) iASL Compiler/Disassembler and Tools:
3021 iASL: Added the infrastructure and initial implementation of a integrated
3023 like preprocessor. This will simplify BIOS development process by
3025 the need for a separate preprocessing step during builds. On Windows, it
3027 eliminates the need to install a separate C compiler. ACPICA BZ 761. Some
3028 features including full #define() macro support are still under
3030 These preprocessor directives are supported:
3043 In addition, these new command line options are supported:
3044 -D <symbol> Define symbol for preprocessor use
3045 -li Create preprocessed output file (*.i)
3046 -P Preprocess only and create preprocessor output file (*.i)
3048 Table Compiler: Fixed a problem where the equals operator within an
3050 did not work properly.
3052 Updated iASL to use the current versions of Bison/Flex. Updated the
3054 project file to invoke these tools from the standard location. ACPICA BZ
3057 Flex for Windows: V2.5.4
3058 Bison for Windows: V2.4.1
3060 ----------------------------------------
3061 15 February 2012. Summary of changes for version 20120215:
3064 1) ACPICA Core Subsystem:
3066 There have been some major changes to the sleep/wake support code, as
3067 described below (a - e).
3069 a) The AcpiLeaveSleepState has been split into two interfaces, similar to
3070 AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is
3071 AcpiLeaveSleepStatePrep. This allows the host to perform actions between
3073 time the _BFS method is called and the _WAK method is called. NOTE: all
3075 must update their wake/resume code or else sleep/wake will not work
3079 b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the
3081 method. Some machines require that the GPEs are enabled before the _WAK
3083 is executed. Thomas Renninger.
3085 c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status)
3087 Some BIOS code assumes that WAK_STS will be cleared on resume and use it
3089 determine whether the system is rebooting or resuming. Matthew Garrett.
3091 d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From
3093 match the ACPI specification requirement. Rafael Wysocki.
3095 e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl
3096 registers within the V5 FADT. This support adds two new files:
3097 hardware/hwesleep.c implements the support for the new registers. Moved
3099 sleep/wake external interfaces to hardware/hwxfsleep.c.
3102 Added a new OSL interface for ACPI table overrides,
3103 AcpiOsPhysicalTableOverride. This interface allows the host to override a
3104 table via a physical address, instead of the logical address required by
3105 AcpiOsTableOverride. This simplifies the host implementation. Initial
3106 implementation by Thomas Renninger. The ACPICA implementation creates a
3108 shared function for table overrides that attempts both a logical and a
3111 Expanded the OSL memory read/write interfaces to 64-bit data
3112 (AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory
3113 transfer support for GAS register structures passed to AcpiRead and
3116 Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a
3118 build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC)
3120 See the ACPICA reference for details. ACPICA BZ 942. This option removes
3122 10% of the code and 5% of the static data, and the following hardware
3124 features become unavailable:
3125 PM Event and Control registers
3126 SCI interrupt (and handler)
3128 General Purpose Events (GPEs)
3131 FACS table (Waking vectors and Global Lock)
3133 Updated the unix tarball directory structure to match the ACPICA git
3135 tree. This ensures that the generic unix makefiles work properly (in
3136 generate/unix). Also updated the Linux makefiles to match. ACPICA BZ
3139 Updated the return value of the _REV predefined method to integer value 5
3141 reflect ACPI 5.0 support.
3143 Moved the external ACPI PM timer interface prototypes to the public
3145 file where they belong.
3147 Example Code and Data Size: These are the sizes for the OS-independent
3148 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3150 version of the code includes the debug output trace mechanism and has a
3152 larger code and data size.
3155 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
3156 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
3158 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
3159 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
3162 2) iASL Compiler/Disassembler and Tools:
3164 Disassembler: Fixed a problem with the new ACPI 5.0 serial resource
3165 descriptors (I2C, SPI, UART) where the resource produce/consumer bit was
3166 incorrectly displayed.
3168 AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI
3171 ----------------------------------------
3172 11 January 2012. Summary of changes for version 20120111:
3175 1) ACPICA Core Subsystem:
3177 Implemented a new mechanism to allow host device drivers to check for
3179 range conflicts with ACPI Operation Regions. Both SystemMemory and
3181 address spaces are supported. A new external interface,
3182 AcpiCheckAddressRange,
3183 allows drivers to check an address range against the ACPI namespace. See
3185 ACPICA reference for additional details. Adds one new file,
3186 utilities/utaddress.c. Lin Ming, Bob Moore.
3188 Fixed several issues with the ACPI 5.0 FADT support: Add the sleep
3191 Status registers, update the ACPI 5.0 flags, and update internal data
3192 structures to handle an FADT larger than 256 bytes. The size of the ACPI
3196 Updated all ACPICA copyrights and signons to 2012. Added the 2012
3198 all module headers and signons, including the standard Linux header. This
3199 affects virtually every file in the ACPICA core subsystem, iASL compiler,
3201 all ACPICA utilities.
3203 Example Code and Data Size: These are the sizes for the OS-independent
3204 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3206 version of the code includes the debug output trace mechanism and has a
3208 larger code and data size.
3211 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
3212 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
3214 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
3215 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
3218 2) iASL Compiler/Disassembler and Tools:
3220 Disassembler: fixed a problem with the automatic resource tag generation
3221 support. Fixes a problem where the resource tags are inadvertently not
3222 constructed if the table being disassembled contains external references
3224 control methods. Moved the actual construction of the tags to after the
3226 namespace is constructed (after 2nd parse is invoked due to external
3228 method references.) ACPICA BZ 941.
3230 Table Compiler: Make all "generic" operators caseless. These are the
3232 like UINT8, String, etc. Making these caseless improves ease-of-use.
3236 ----------------------------------------
3237 23 November 2011. Summary of changes for version 20111123:
3239 0) ACPI 5.0 Support:
3241 This release contains full support for the ACPI 5.0 specification, as
3244 Reduced Hardware Support:
3245 -------------------------
3247 This support allows for ACPI systems without the usual ACPI hardware.
3249 support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA
3251 not attempt to initialize or use any of the usual ACPI hardware. Note,
3253 this flag is set, all of the following ACPI hardware is assumed to be not
3254 present and is not initialized or accessed:
3256 General Purpose Events (GPEs)
3257 Fixed Events (PM1a/PM1b and PM Control)
3258 Power Management Timer and Console Buttons (power/sleep)
3259 Real-time Clock Alarm
3261 System Control Interrupt (SCI)
3262 The FACS is assumed to be non-existent
3267 All new tables and updates to existing tables are fully supported in the
3268 ACPICA headers (for use by device drivers), the disassembler, and the
3270 Data Table Compiler. ACPI 5.0 defines these new tables:
3272 BGRT /* Boot Graphics Resource Table */
3273 DRTM /* Dynamic Root of Trust for Measurement table */
3274 FPDT /* Firmware Performance Data Table */
3275 GTDT /* Generic Timer Description Table */
3276 MPST /* Memory Power State Table */
3277 PCCT /* Platform Communications Channel Table */
3278 PMTT /* Platform Memory Topology Table */
3279 RASF /* RAS Feature table */
3281 Operation Regions/SpaceIDs:
3282 ---------------------------
3284 All new operation regions are fully supported by the iASL compiler, the
3285 disassembler, and the ACPICA runtime code (for dispatch to region
3287 The new operation region Space IDs are:
3292 Resource Descriptors:
3293 ---------------------
3295 All new ASL resource descriptors are fully supported by the iASL
3298 ASL/AML disassembler, and the ACPICA runtime Resource Manager code
3300 all new predefined resource tags). New descriptors are:
3309 ASL/AML Operators, New and Modified:
3310 ------------------------------------
3312 One new operator is added, the Connection operator, which is used to
3314 a GeneralPurposeIo or GenericSerialBus resource descriptor with
3316 field objects within an operation region. Several new protocols are
3318 with the AccessAs operator. All are fully supported by the iASL compiler,
3319 disassembler, and runtime ACPICA AML interpreter:
3321 Connection // Declare Field Connection
3323 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol
3324 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes
3326 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol
3327 RawDataBuffer // Data type for Vendor Data
3330 Predefined ASL/AML Objects:
3331 ---------------------------
3333 All new predefined objects/control-methods are supported by the iASL
3335 and the ACPICA runtime validation/repair (arguments and return values.)
3337 predefined names include the following:
3339 Standard Predefined Names (Objects or Control Methods):
3340 _AEI, _CLS, _CPC, _CWS, _DEP,
3341 _DLM, _EVT, _GCP, _CRT, _GWS,
3342 _HRV, _PRE, _PSE, _SRT, _SUB.
3344 Resource Tags (Names used to access individual fields within resource
3346 _DBT, _DPL, _DRS, _END, _FLC,
3347 _IOR, _LIN, _MOD, _PAR, _PHA,
3348 _PIN, _PPI, _POL, _RXL, _SLV,
3349 _SPE, _STB, _TXL, _VEN.
3351 ACPICA External Interfaces:
3352 ---------------------------
3354 Several new interfaces have been defined for use by ACPI-related device
3355 drivers and other host OS services:
3357 AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS
3359 acquire and release AML mutexes that are defined in the DSDT/SSDT tables
3360 provided by the BIOS. They are intended to be used in conjunction with
3362 ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level
3363 mutual exclusion with the AML code/interpreter.
3365 AcpiGetEventResources: Returns the (formatted) resource descriptors as
3367 by the ACPI 5.0 _AEI object (ACPI Event Information). This object
3369 resource descriptors associated with hardware-reduced platform events,
3371 to the AcpiGetCurrentResources interface.
3373 Operation Region Handlers: For General Purpose IO and Generic Serial Bus
3374 operation regions, information about the Connection() object and any
3376 length information is passed to the region handler within the Context
3379 AcpiBufferToResource: This interface converts a raw AML buffer containing
3381 resource template or resource descriptor to the ACPI_RESOURCE internal
3383 suitable for use by device drivers. Can be used by an operation region
3385 to convert the Connection() buffer object into a ACPI_RESOURCE.
3387 Miscellaneous/Tools/TestSuites:
3388 -------------------------------
3390 Support for extended _HID names (Four alpha characters instead of three).
3391 Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities.
3392 Support for ACPI 5.0 features in the ASLTS test suite.
3393 Fully updated documentation (ACPICA and iASL reference documents.)
3395 ACPI Table Definition Language:
3396 -------------------------------
3398 Support for this language was implemented and released as a subsystem of
3400 iASL compiler in 2010. (See the iASL compiler User Guide.)
3403 Non-ACPI 5.0 changes for this release:
3404 --------------------------------------
3406 1) ACPICA Core Subsystem:
3408 Fix a problem with operation region declarations where a failure can
3411 the region name and an argument that evaluates to an object (such as the
3412 region address) are in different namespace scopes. Lin Ming, ACPICA BZ
3415 Do not abort an ACPI table load if an invalid space ID is found within.
3417 will be caught later if the offending method is executed. ACPICA BZ 925.
3419 Fixed an issue with the FFixedHW space ID where the ID was not always
3420 recognized properly (Both ACPICA and iASL). ACPICA BZ 926.
3422 Fixed a problem with the 32-bit generation of the unix-specific OSL
3423 (osunixxf.c). Lin Ming, ACPICA BZ 936.
3425 Several changes made to enable generation with the GCC 4.6 compiler.
3429 New error messages: Unsupported I/O requests (not 8/16/32 bit), and
3431 field registers out-of-range.
3433 2) iASL Compiler/Disassembler and Tools:
3435 iASL: Implemented the __PATH__ operator, which returns the full pathname
3437 the current source file.
3439 AcpiHelp: Automatically display expanded keyword information for all ASL
3442 Debugger: Add "Template" command to disassemble/dump resource template
3445 Added a new master script to generate and execute the ASLTS test suite.
3446 Automatically handles 32- and 64-bit generation. See tests/aslts.sh
3448 iASL: Fix problem with listing generation during processing of the
3450 operator where AML listing was disabled until the entire Switch block was
3453 iASL: Improve support for semicolon statement terminators. Fix "invalid
3454 character" message for some cases when the semicolon is used. Semicolons
3456 now allowed after every <Term> grammar element. ACPICA BZ 927.
3458 iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ
3461 Disassembler: Fix problem with disassembly of the DataTableRegion
3463 where an inadvertent "Unhandled deferred opcode" message could be
3466 3) Example Code and Data Size
3468 These are the sizes for the OS-independent acpica.lib produced by the
3469 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
3470 includes the debug output trace mechanism and has a much larger code and
3475 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
3476 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
3478 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
3479 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
3481 ----------------------------------------
3482 22 September 2011. Summary of changes for version 20110922:
3486 Support for ACPI 5.0 in ACPICA has been underway for several months and
3488 be released at the same time that ACPI 5.0 is officially released.
3490 The ACPI 5.0 specification is on track for release in the next few
3493 1) ACPICA Core Subsystem:
3495 Fixed a problem where the maximum sleep time for the Sleep() operator was
3496 intended to be limited to two seconds, but was inadvertently limited to
3500 Linux and Unix makefiles: Added header file dependencies to ensure
3502 generation of ACPICA core code and utilities. Also simplified the
3504 considerably through the use of the vpath variable to specify search
3508 2) iASL Compiler/Disassembler and Tools:
3510 iASL: Implemented support to check the access length for all fields
3512 access named Resource Descriptor fields. For example, if a resource field
3514 defined to be two bits, a warning is issued if a CreateXxxxField() is
3516 with an incorrect bit length. This is implemented for all current
3518 descriptor names. ACPICA BZ 930.
3520 Disassembler: Fixed a byte ordering problem with the output of 24-bit and
3524 iASL: Fixed a couple of issues associated with variable-length package
3525 objects. 1) properly handle constants like One, Ones, Zero -- do not make
3527 VAR_PACKAGE when these are used as a package length. 2) Allow the
3529 opcode (in addition to PACKAGE) when validating object types for
3533 iASL: Emit statistics for all output files (instead of just the ASL input
3535 AML output). Includes listings, hex files, etc.
3537 iASL: Added -G option to the table compiler to allow the compilation of
3539 ACPI tables. The only part of a table that is required is the standard
3544 AcpiXtract: Ported to the standard ACPICA environment (with ACPICA
3546 which also adds correct 64-bit support. Also, now all output filenames
3548 completely lower case.
3550 AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when
3551 loading table files. A warning is issued for any such tables. The only
3552 exception is an FADT. This also fixes a possible fault when attempting to
3554 non-AML tables. ACPICA BZ 932.
3556 AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where
3558 missing table terminator could cause a fault when using the -p option.
3560 AcpiSrc: Fixed a possible divide-by-zero fault when generating file
3563 3) Example Code and Data Size
3565 These are the sizes for the OS-independent acpica.lib produced by the
3566 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
3567 includes the debug output trace mechanism and has a much larger code and
3571 Previous Release (VC 9.0):
3572 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
3573 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
3574 Current Release (VC 9.0):
3575 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
3576 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
3579 ----------------------------------------
3580 23 June 2011. Summary of changes for version 20110623:
3582 1) ACPI CA Core Subsystem:
3584 Updated the predefined name repair mechanism to not attempt repair of a
3586 return object if a _PSS object is present. We can only sort the _TSS
3588 package if there is no _PSS within the same scope. This is because if
3591 present, the ACPI specification dictates that the _TSS Power Dissipation
3593 is to be ignored, and therefore some BIOSs leave garbage values in the
3595 Power field(s). In this case, it is best to just return the _TSS package
3597 is. Reported by, and fixed with assistance from Fenghua Yu.
3599 Added an option to globally disable the control method return value
3601 and repair. This runtime option can be used to disable return value
3604 this is causing a problem on a particular machine. Also added an option
3606 AcpiExec (-dr) to set this disable flag.
3608 All makefiles and project files: Major changes to improve generation of
3610 tools. ACPICA BZ 912:
3611 Reduce default optimization levels to improve compatibility
3612 For Linux, add strict-aliasing=0 for gcc 4
3613 Cleanup and simplify use of command line defines
3614 Cleanup multithread library support
3615 Improve usage messages
3617 Linux-specific header: update handling of THREAD_ID and pthread. For the
3619 bit case, improve casting to eliminate possible warnings, especially with
3623 Example Code and Data Size: These are the sizes for the OS-independent
3624 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3626 version of the code includes the debug output trace mechanism and has a
3628 larger code and data size.
3630 Previous Release (VC 9.0):
3631 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
3632 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
3633 Current Release (VC 9.0):
3634 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
3635 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
3637 2) iASL Compiler/Disassembler and Tools:
3639 With this release, a new utility named "acpihelp" has been added to the
3641 package. This utility summarizes the ACPI specification chapters for the
3643 and AML languages. It generates under Linux/Unix as well as Windows, and
3644 provides the following functionality:
3645 Find/display ASL operator(s) -- with description and syntax.
3646 Find/display ASL keyword(s) -- with exact spelling and descriptions.
3647 Find/display ACPI predefined name(s) -- with description, number
3648 of arguments, and the return value data type.
3649 Find/display AML opcode name(s) -- with opcode, arguments, and
3651 Decode/display AML opcode -- with opcode name, arguments, and
3654 Service Layers: Make multi-thread support configurable. Conditionally
3656 the multi-thread support so that threading libraries will not be linked
3659 necessary. The only tool that requires multi-thread support is AcpiExec.
3661 iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions
3663 Bison appear to want the interface to yyerror to be a const char * (or at
3664 least this is a problem when generating iASL on some systems.) ACPICA BZ
3668 Tools: Fix for systems where O_BINARY is not defined. Only used for
3670 versions of the tools.
3672 ----------------------------------------
3673 27 May 2011. Summary of changes for version 20110527:
3675 1) ACPI CA Core Subsystem:
3677 ASL Load() operator: Reinstate most restrictions on the incoming ACPI
3679 signature. Now, only allow SSDT, OEMx, and a null signature. History:
3680 1) Originally, we checked the table signature for "SSDT" or "PSDT".
3681 (PSDT is now obsolete.)
3682 2) We added support for OEMx tables, signature "OEM" plus a fourth
3683 "don't care" character.
3684 3) Valid tables were encountered with a null signature, so we just
3685 gave up on validating the signature, (05/2008).
3686 4) We encountered non-AML tables such as the MADT, which caused
3687 interpreter errors and kernel faults. So now, we once again allow
3688 only SSDT, OEMx, and now, also a null signature. (05/2011).
3690 Added the missing _TDL predefined name to the global name list in order
3692 enable validation. Affects both the core ACPICA code and the iASL
3695 Example Code and Data Size: These are the sizes for the OS-independent
3696 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3698 version of the code includes the debug output trace mechanism and has a
3700 larger code and data size.
3702 Previous Release (VC 9.0):
3703 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
3704 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
3705 Current Release (VC 9.0):
3706 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
3707 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
3709 2) iASL Compiler/Disassembler and Tools:
3711 Debugger/AcpiExec: Implemented support for "complex" method arguments on
3713 debugger command line. This adds support beyond simple integers --
3715 Strings, Buffers, and Packages. Includes support for nested packages.
3716 Increased the default command line buffer size to accommodate these
3718 See the ACPICA reference for details and syntax. ACPICA BZ 917.
3720 Debugger/AcpiExec: Implemented support for "default" method arguments for
3722 Execute/Debug command. Now, the debugger will always invoke a control
3724 with the required number of arguments -- even if the command line
3726 none or insufficient arguments. It uses default integer values for any
3728 arguments. Also fixes a bug where only six method arguments maximum were
3729 supported instead of the required seven.
3731 Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine
3733 also return status in order to prevent buffer overruns. See the ACPICA
3734 reference for details and syntax. ACPICA BZ 921
3736 iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and
3737 makefiles to simplify support for the two different but similar parser
3738 generators, bison and yacc.
3740 Updated the generic unix makefile for gcc 4. The default gcc version is
3742 expected to be 4 or greater, since options specific to gcc 4 are used.
3744 ----------------------------------------
3745 13 April 2011. Summary of changes for version 20110413:
3747 1) ACPI CA Core Subsystem:
3749 Implemented support to execute a so-called "orphan" _REG method under the
3751 device. This change will force the execution of a _REG method underneath
3754 device even if there is no corresponding operation region of type
3755 EmbeddedControl. Fixes a problem seen on some machines and apparently is
3756 compatible with Windows behavior. ACPICA BZ 875.
3758 Added more predefined methods that are eligible for automatic NULL
3760 element removal. This change adds another group of predefined names to
3763 of names that can be repaired by having NULL package elements dynamically
3764 removed. This group are those methods that return a single variable-
3766 package containing simple data types such as integers, buffers, strings.
3768 includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx,
3771 and _TZD. ACPICA BZ 914.
3773 Split and segregated all internal global lock functions to a new file,
3776 Updated internal address SpaceID for DataTable regions. Moved this
3779 id in preparation for ACPI 5.0 changes that will include some new space
3782 change should not affect user/host code.
3784 Example Code and Data Size: These are the sizes for the OS-independent
3786 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
3788 the code includes the debug output trace mechanism and has a much larger
3793 Previous Release (VC 9.0):
3794 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
3795 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
3796 Current Release (VC 9.0):
3797 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
3798 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
3800 2) iASL Compiler/Disassembler and Tools:
3802 iASL/DTC: Major update for new grammar features. Allow generic data types
3804 custom ACPI tables. Field names are now optional. Any line can be split
3806 multiple lines using the continuation char (\). Large buffers now use
3808 continuation character(s) and no colon on the continuation lines. See the
3810 update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob
3813 iASL: Mark ASL "Return()" and the simple "Return" as "Null" return
3815 Since the parser stuffs a "zero" as the return value for these statements
3818 the underlying AML grammar), they were seen as "return with value" by the
3820 semantic checking. They are now seen correctly as "null" return
3823 iASL: Check if a_REG declaration has a corresponding Operation Region.
3825 check for each _REG to ensure that there is in fact a corresponding
3827 region declaration in the same scope. If not, the _REG method is not very
3829 since it probably won't be executed. ACPICA BZ 915.
3831 iASL/DTC: Finish support for expression evaluation. Added a new
3834 that implements c-style operator precedence and parenthesization. ACPICA
3838 Disassembler/DTC: Remove support for () and <> style comments in data
3841 that DTC has full expression support, we don't want to have comment
3844 start with a parentheses or a less-than symbol. Now, only the standard /*
3847 comments are supported, as well as the bracket [] comments.
3849 AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have
3851 headers in the acpidump file. Update the header validation to support
3853 tables. Problem introduced in previous AcpiXtract version in the change
3855 support "wrong checksum" error messages emitted by acpidump utility.
3857 iASL: Add a * option to generate all template files (as a synonym for
3861 "iasl -T *" or "iasl -T ALL".
3863 iASL/DTC: Do not abort compiler on fatal errors. We do not want to
3865 abort the compiler on "fatal" errors, simply should abort the current
3867 This allows multiple compiles with a single (possibly wildcard) compiler
3870 ----------------------------------------
3871 16 March 2011. Summary of changes for version 20110316:
3873 1) ACPI CA Core Subsystem:
3875 Fixed a problem caused by a _PRW method appearing at the namespace root
3877 during the setup of wake GPEs. A fault could occur if a _PRW directly
3880 root object was passed to the AcpiSetupGpeForWake interface. Lin Ming.
3882 Implemented support for "spurious" Global Lock interrupts. On some
3884 global lock interrupt can occur without the pending flag being set. Upon
3887 interrupt, we now ensure that a thread is actually waiting for the lock
3889 signaling GL availability. Rafael Wysocki, Bob Moore.
3891 Example Code and Data Size: These are the sizes for the OS-independent
3893 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
3895 the code includes the debug output trace mechanism and has a much larger
3900 Previous Release (VC 9.0):
3901 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
3902 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
3903 Current Release (VC 9.0):
3904 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
3905 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
3907 2) iASL Compiler/Disassembler and Tools:
3909 Implemented full support for the "SLIC" ACPI table. Includes support in
3911 header files, disassembler, table compiler, and template generator. Bob
3915 AcpiXtract: Correctly handle embedded comments and messages from
3917 Apparently some or all versions of acpidump will occasionally emit a
3920 "Wrong checksum", etc., into the dump file. This was causing problems for
3921 AcpiXtract. ACPICA BZ 905.
3923 iASL: Fix the Linux makefile by removing an inadvertent double file
3927 AcpiExec: Update installation of operation region handlers. Install one
3929 for a user-defined address space. This is used by the ASL test suite
3932 ----------------------------------------
3933 11 February 2011. Summary of changes for version 20110211:
3935 1) ACPI CA Core Subsystem:
3937 Added a mechanism to defer _REG methods for some early-installed
3939 Most user handlers should be installed before call to
3940 AcpiEnableSubsystem.
3941 However, Event handlers and region handlers should be installed after
3942 AcpiInitializeObjects. Override handlers for the "default" regions should
3944 installed early, however. This change executes all _REG methods for the
3945 default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any
3946 chicken/egg issues between them. ACPICA BZ 848.
3948 Implemented an optimization for GPE detection. This optimization will
3950 ignore GPE registers that contain no enabled GPEs -- there is no need to
3951 read the register since this information is available internally. This
3952 becomes more important on machines with a large GPE space. ACPICA
3954 884. Lin Ming. Suggestion from Joe Liu.
3956 Removed all use of the highly unreliable FADT revision field. The
3958 number in the FADT has been found to be completely unreliable and cannot
3960 trusted. Only the actual table length can be used to infer the version.
3962 change updates the ACPICA core and the disassembler so that both no
3964 even look at the FADT version and instead depend solely upon the FADT
3967 Fix an unresolved name issue for the no-debug and no-error-message source
3968 generation cases. The _AcpiModuleName was left undefined in these cases,
3970 it is actually needed as a parameter to some interfaces. Define
3971 _AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888.
3973 Split several large files (makefiles and project files updated)
3974 utglobal.c -> utdecode.c
3975 dbcomds.c -> dbmethod.c dbnames.c
3976 dsopcode.c -> dsargs.c dscontrol.c
3977 dsload.c -> dsload2.c
3978 aslanalyze.c -> aslbtypes.c aslwalks.c
3980 Example Code and Data Size: These are the sizes for the OS-independent
3981 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3982 debug version of the code includes the debug output trace mechanism and
3984 a much larger code and data size.
3986 Previous Release (VC 9.0):
3987 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
3988 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
3989 Current Release (VC 9.0):
3990 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
3991 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
3993 2) iASL Compiler/Disassembler and Tools:
3995 iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__.
3996 These are useful C-style macros with the standard definitions. ACPICA
3999 iASL/DTC: Added support for integer expressions and labels. Support for
4001 expressions for all integer fields in all ACPI tables. Support for labels
4003 "generic" portions of tables such as UEFI. See the iASL reference manual.
4005 Debugger: Added a command to display the status of global handlers. The
4006 "handlers" command will display op region, fixed event, and miscellaneous
4007 global handlers. installation status -- and for op regions, whether
4009 or user-installed handler will be used.
4011 iASL: Warn if reserved method incorrectly returns a value. Many
4013 names are defined such that they do not return a value. If implemented as
4015 method, issue a warning if such a name explicitly returns a value. ACPICA
4018 iASL: Added detection of GPE method name conflicts. Detects a conflict
4020 there are two GPE methods of the form _Lxy and _Exy in the same scope.
4022 example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848.
4024 iASL/DTC: Fixed a couple input scanner issues with comments and line
4025 numbers. Comment remover could get confused and miss a comment ending.
4027 a problem with line counter maintenance.
4029 iASL/DTC: Reduced the severity of some errors from fatal to error. There
4031 no need to abort on simple errors within a field definition.
4033 Debugger: Simplified the output of the help command. All help output now
4035 a single screen, instead of help subcommands. ACPICA Bugzilla 897.
4037 ----------------------------------------
4038 12 January 2011. Summary of changes for version 20110112:
4040 1) ACPI CA Core Subsystem:
4042 Fixed a race condition between method execution and namespace walks that
4044 possibly cause a fault. The problem was apparently introduced in version
4045 20100528 as a result of a performance optimization that reduces the
4048 namespace walks upon method exit by using the delete_namespace_subtree
4049 function instead of the delete_namespace_by_owner function used
4051 Bug is a missing namespace lock in the delete_namespace_subtree function.
4052 dana.myers@oracle.com
4054 Fixed several issues and a possible fault with the automatic "serialized"
4055 method support. History: This support changes a method to "serialized" on
4057 fly if the method generates an AE_ALREADY_EXISTS error, indicating the
4058 possibility that it cannot handle reentrancy. This fix repairs a couple
4060 issues seen in the field, especially on machines with many cores:
4062 1) Delete method children only upon the exit of the last thread,
4063 so as to not delete objects out from under other running threads
4064 (and possibly causing a fault.)
4065 2) Set the "serialized" bit for the method only upon the exit of the
4066 Last thread, so as to not cause deadlock when running threads
4068 3) Cleanup the use of the AML "MethodFlags" and internal method flags
4069 so that there is no longer any confusion between the two.
4071 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com.
4073 Debugger: Now lock the namespace for duration of a namespace dump.
4075 issues if the namespace is changing dynamically underneath the debugger.
4076 Especially affects temporary namespace nodes, since the debugger displays
4079 Updated the ordering of include files. The ACPICA headers should appear
4080 before any compiler-specific headers (stdio.h, etc.) so that acenv.h can
4082 any necessary compiler-specific defines, etc. Affects the ACPI-related
4086 Updated all ACPICA copyrights and signons to 2011. Added the 2011
4088 to all module headers and signons, including the Linux header. This
4090 virtually every file in the ACPICA core subsystem, iASL compiler, and all
4093 Added project files for MS Visual Studio 2008 (VC++ 9.0). The original
4094 project files for VC++ 6.0 are now obsolete. New project files can be
4096 under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for
4099 Example Code and Data Size: These are the sizes for the OS-independent
4100 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4101 debug version of the code includes the debug output trace mechanism and
4103 much larger code and data size.
4105 Previous Release (VC 6.0):
4106 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
4107 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
4108 Current Release (VC 9.0):
4109 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
4110 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
4112 2) iASL Compiler/Disassembler and Tools:
4114 iASL: Added generic data types to the Data Table compiler. Add "generic"
4116 types such as UINT32, String, Unicode, etc., to simplify the generation
4118 platform-defined tables such as UEFI. Lin Ming.
4120 iASL: Added listing support for the Data Table Compiler. Adds listing
4122 (-l) to display actual binary output for each line of input code.
4124 ----------------------------------------
4125 09 December 2010. Summary of changes for version 20101209:
4127 1) ACPI CA Core Subsystem:
4129 Completed the major overhaul of the GPE support code that was begun in
4131 2010. Major features include: removal of _PRW execution in ACPICA (host
4132 executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing,
4133 changes to existing interfaces, simplification of GPE handler operation,
4135 a handful of new interfaces:
4141 One new file, evxfgpe.c to consolidate all external GPE interfaces.
4143 See the ACPICA Programmer Reference for full details and programming
4144 information. See the new section 4.4 "General Purpose Event (GPE)
4146 for a full overview, and section 8.7 "ACPI General Purpose Event
4148 for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin
4150 Bob Moore, Rafael Wysocki.
4152 Implemented a new GPE feature for Windows compatibility, the "Implicit
4154 GPE Notify". This feature will automatically issue a Notify(2) on a
4156 when a Wake GPE is received if there is no corresponding GPE method or
4157 handler. ACPICA BZ 870.
4159 Fixed a problem with the Scope() operator during table parse and load
4161 During load phase (table load or method execution), the scope operator
4163 not enter the target into the namespace. Instead, it should open a new
4165 at the target location. Linux BZ 19462, ACPICA BZ 882.
4167 Example Code and Data Size: These are the sizes for the OS-independent
4168 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4169 debug version of the code includes the debug output trace mechanism and
4171 much larger code and data size.
4174 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
4175 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
4177 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
4178 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
4180 2) iASL Compiler/Disassembler and Tools:
4182 iASL: Relax the alphanumeric restriction on _CID strings. These strings
4184 "bus-specific" per the ACPI specification, and therefore any characters
4186 acceptable. The only checks that can be performed are for a null string
4188 perhaps for a leading asterisk. ACPICA BZ 886.
4190 iASL: Fixed a problem where a syntax error that caused a premature EOF
4191 condition on the source file emitted a very confusing error message. The
4192 premature EOF is now detected correctly. ACPICA BZ 891.
4194 Disassembler: Decode the AccessSize within a Generic Address Structure
4196 access, word access, etc.) Note, this field does not allow arbitrary bit
4197 access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword.
4199 New: AcpiNames utility - Example namespace dump utility. Shows an example
4201 ACPICA configuration for a minimal namespace dump utility. Uses table and
4202 namespace managers, but no AML interpreter. Does not add any
4204 over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to
4205 partition and configure ACPICA. ACPICA BZ 883.
4207 AML Debugger: Increased the debugger buffer size for method return
4209 Was 4K, increased to 16K. Also enhanced error messages for debugger
4211 execution, including the buffer overflow case.
4213 ----------------------------------------
4214 13 October 2010. Summary of changes for version 20101013:
4216 1) ACPI CA Core Subsystem:
4218 Added support to clear the PCIEXP_WAKE event. When clearing ACPI events,
4220 clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via
4221 HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880.
4223 Changed the type of the predefined namespace object _TZ from ThermalZone
4225 Device. This was found to be confusing to the host software that
4227 the various thermal zones, since _TZ is not really a ThermalZone.
4230 Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui
4233 Added Windows Vista SP2 to the list of supported _OSI strings. The actual
4234 string is "Windows 2006 SP2".
4236 Eliminated duplicate code in AcpiUtExecute* functions. Now that the
4238 code automatically repairs _HID-related strings, this type of code is no
4239 longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ
4242 Example Code and Data Size: These are the sizes for the OS-independent
4243 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4244 debug version of the code includes the debug output trace mechanism and
4246 much larger code and data size.
4249 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
4250 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
4252 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
4253 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
4255 2) iASL Compiler/Disassembler and Tools:
4257 iASL: Implemented additional compile-time validation for _HID strings.
4259 non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the
4262 the string must be exactly seven or eight characters. For both _HID and
4264 strings, all characters must be alphanumeric. ACPICA BZ 874.
4266 iASL: Allow certain "null" resource descriptors. Some BIOS code creates
4267 descriptors that are mostly or all zeros, with the expectation that they
4269 be filled in at runtime. iASL now allows this as long as there is a
4271 tag" (name) associated with the descriptor, which gives the ASL a handle
4272 needed to modify the descriptor. ACPICA BZ 873.
4274 Added single-thread support to the generic Unix application OSL.
4276 for iASL support, this change removes the use of semaphores in the
4278 threaded ACPICA tools/applications - increasing performance. The
4279 _MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED
4280 option. ACPICA BZ 879.
4282 AcpiExec: several fixes for the 64-bit version. Adds XSDT support and
4284 for 64-bit DSDT/FACS addresses in the FADT. Lin Ming.
4286 iASL: Moved all compiler messages to a new file, aslmessages.h.
4288 ----------------------------------------
4289 15 September 2010. Summary of changes for version 20100915:
4291 1) ACPI CA Core Subsystem:
4293 Removed the AcpiOsDerivePciId OSL interface. The various host
4295 of this function were not OS-dependent and are now obsolete and can be
4296 removed from all host OSLs. This function has been replaced by
4297 AcpiHwDerivePciId, which is now part of the ACPICA core code.
4298 AcpiHwDerivePciId has been implemented without recursion. Adds one new
4299 module, hwpci.c. ACPICA BZ 857.
4301 Implemented a dynamic repair for _HID and _CID strings. The following
4302 problems are now repaired at runtime: 1) Remove a leading asterisk in the
4303 string, and 2) the entire string is uppercased. Both repairs are in
4304 accordance with the ACPI specification and will simplify host driver
4308 The ACPI_THREAD_ID type is no longer configurable, internally it is now
4309 always UINT64. This simplifies the ACPICA code, especially any printf
4311 UINT64 is the only common data type for all thread_id types across all
4312 operating systems. It is now up to the host OSL to cast the native
4314 type to UINT64 before returning the value to ACPICA (via
4316 Lin Ming, Bob Moore.
4318 Added the ACPI_INLINE type to enhance the ACPICA configuration. The
4320 keyword is not standard across compilers, and this type allows inline to
4322 configured on a per-compiler basis. Lin Ming.
4324 Made the system global AcpiGbl_SystemAwakeAndRunning publically
4326 Added an extern for this boolean in acpixf.h. Some hosts utilize this
4328 during suspend/restore operations. ACPICA BZ 869.
4330 All code that implements error/warning messages with the "ACPI:" prefix
4332 been moved to a new module, utxferror.c.
4334 The UINT64_OVERLAY was moved to utmath.c, which is the only module where
4336 is used. ACPICA BZ 829. Lin Ming, Bob Moore.
4338 Example Code and Data Size: These are the sizes for the OS-independent
4339 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4340 debug version of the code includes the debug output trace mechanism and
4342 much larger code and data size.
4345 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
4346 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
4348 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
4349 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
4351 2) iASL Compiler/Disassembler and Tools:
4353 iASL/Disassembler: Write ACPI errors to stderr instead of the output
4355 This keeps the output files free of random error messages that may
4357 from within the namespace/interpreter code. Used this opportunity to
4359 all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ
4360 866. Lin Ming, Bob Moore.
4362 Tools: update some printfs for ansi warnings on size_t. Handle width
4364 of size_t on 32-bit versus 64-bit generations. Lin Ming.
4366 ----------------------------------------
4367 06 August 2010. Summary of changes for version 20100806:
4369 1) ACPI CA Core Subsystem:
4371 Designed and implemented a new host interface to the _OSI support code.
4373 will allow the host to dynamically add or remove multiple _OSI strings,
4375 well as install an optional handler that is called for each _OSI
4377 Also added a new AML debugger command, 'osi' to display and modify the
4379 _OSI string table, and test support in the AcpiExec utility. See the
4381 reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836.
4383 AcpiInstallInterface - Add an _OSI string.
4384 AcpiRemoveInterface - Delete an _OSI string.
4385 AcpiInstallInterfaceHandler - Install optional _OSI handler.
4387 AcpiOsValidateInterface - no longer used.
4389 source/components/utilities/utosi.c
4391 Re-introduced the support to enable multi-byte transfers for Embedded
4392 Controller (EC) operation regions. A reported problem was found to be a
4394 in the host OS, not in the multi-byte support. Previously, the maximum
4396 size passed to the EC operation region handler was a single byte. There
4398 often EC Fields larger than one byte that need to be transferred, and it
4400 useful for the EC driver to lock these as a single transaction. This
4402 enables single transfers larger than 8 bits. This effectively changes the
4403 access to the EC space from ByteAcc to AnyAcc, and will probably require
4404 changes to the host OS Embedded Controller driver to enable 16/32/64/256-
4406 transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming.
4408 Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The
4409 prototype in acpiosxf.h had the output value pointer as a (void *).
4410 It should be a (UINT64 *). This may affect some host OSL code.
4412 Fixed a couple problems with the recently modified Linux makefiles for
4414 and AcpiExec. These new makefiles place the generated object files in the
4415 local directory so that there can be no collisions between the files that
4417 shared between them that are compiled with different options.
4419 Example Code and Data Size: These are the sizes for the OS-independent
4420 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4421 debug version of the code includes the debug output trace mechanism and
4423 much larger code and data size.
4426 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
4427 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
4429 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
4430 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
4432 2) iASL Compiler/Disassembler and Tools:
4434 iASL/Disassembler: Added a new option (-da, "disassemble all") to load
4436 namespace from and disassemble an entire group of AML files. Useful for
4437 loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn)
4439 disassembling with one simple command. ACPICA BZ 865. Lin Ming.
4441 iASL: Allow multiple invocations of -e option. This change allows
4443 uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ
4447 ----------------------------------------
4448 02 July 2010. Summary of changes for version 20100702:
4450 1) ACPI CA Core Subsystem:
4452 Implemented several updates to the recently added GPE reference count
4453 support. The model for "wake" GPEs is changing to give the host OS
4455 control of these GPEs. Eventually, the ACPICA core will not execute any
4457 methods, since the host already must execute them. Also, additional
4459 were made to help ensure that the reference counts are kept in proper
4460 synchronization with reality. Rafael J. Wysocki.
4462 1) Ensure that GPEs are not enabled twice during initialization.
4463 2) Ensure that GPE enable masks stay in sync with the reference count.
4464 3) Do not inadvertently enable GPEs when writing GPE registers.
4465 4) Remove the internal wake reference counter and add new AcpiGpeWakeup
4466 interface. This interface will set or clear individual GPEs for wakeup.
4467 5) Remove GpeType argument from AcpiEnable and AcpiDisable. These
4469 are now used for "runtime" GPEs only.
4471 Changed the behavior of the GPE install/remove handler interfaces. The
4474 no longer disabled during this process, as it was found to cause problems
4476 some machines. Rafael J. Wysocki.
4478 Reverted a change introduced in version 20100528 to enable Embedded
4479 Controller multi-byte transfers. This change was found to cause problems
4481 Index Fields and possibly Bank Fields. It will be reintroduced when these
4482 problems have been resolved.
4484 Fixed a problem with references to Alias objects within Package Objects.
4486 reference to an Alias within the definition of a Package was not always
4487 resolved properly. Aliases to objects like Processors, Thermal zones,
4489 were resolved to the actual object instead of a reference to the object
4492 should be. Package objects are only allowed to contain integer, string,
4493 buffer, package, and reference objects. Redhat bugzilla 608648.
4495 Example Code and Data Size: These are the sizes for the OS-independent
4496 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4497 debug version of the code includes the debug output trace mechanism and
4499 much larger code and data size.
4502 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
4503 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
4505 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
4506 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
4508 2) iASL Compiler/Disassembler and Tools:
4510 iASL: Implemented a new compiler subsystem to allow definition and
4511 compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc.
4513 are called "ACPI Data Tables", and the new compiler is the "Data Table
4514 Compiler". This compiler is intended to simplify the existing error-prone
4515 process of creating these tables for the BIOS, as well as allowing the
4516 disassembly, modification, recompilation, and override of existing ACPI
4518 tables. See the iASL User Guide for detailed information.
4520 iASL: Implemented a new Template Generator option in support of the new
4522 Table Compiler. This option will create examples of all known ACPI tables
4523 that can be used as the basis for table development. See the iASL
4524 documentation and the -T option.
4526 Disassembler and headers: Added support for the WDDT ACPI table (Watchdog
4529 Updated the Linux makefiles for iASL and AcpiExec to place the generated
4530 object files in the local directory so that there can be no collisions
4531 between the shared files between them that are generated with different
4534 Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec.
4536 the #define __APPLE__ to enable this support.
4538 ----------------------------------------
4539 28 May 2010. Summary of changes for version 20100528:
4541 Note: The ACPI 4.0a specification was released on April 5, 2010 and is
4542 available at www.acpi.info. This is primarily an errata release.
4544 1) ACPI CA Core Subsystem:
4546 Undefined ACPI tables: We are looking for the definitions for the
4548 ACPI tables that have been seen in the field: ATKG, IEIT, GSCI.
4550 Implemented support to enable multi-byte transfers for Embedded
4552 (EC) operation regions. Previously, the maximum data size passed to the
4554 operation region handler was a single byte. There are often EC Fields
4556 than one byte that need to be transferred, and it is useful for the EC
4558 to lock these as a single transaction. This change enables single
4560 larger than 8 bits. This effectively changes the access to the EC space
4562 ByteAcc to AnyAcc, and will probably require changes to the host OS
4564 Controller driver to enable 16/32/64/256-bit transfers in addition to 8-
4566 transfers. Alexey Starikovskiy, Lin Ming
4568 Implemented a performance enhancement for namespace search and access.
4570 change enhances the performance of namespace searches and walks by adding
4572 backpointer to the parent in each namespace node. On large namespaces,
4574 change can improve overall ACPI performance by up to 9X. Adding a pointer
4576 each namespace node increases the overall size of the internal namespace
4578 about 5%, since each namespace entry usually consists of both a namespace
4579 node and an ACPI operand object. However, this is the first growth of the
4580 namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy.
4582 Implemented a performance optimization that reduces the number of
4584 walks. On control method exit, only walk the namespace if the method is
4586 to have created namespace objects outside of its local scope. Previously,
4588 entire namespace was traversed on each control method exit. This change
4590 improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob
4593 Added support to truncate I/O addresses to 16 bits for Windows
4595 Some ASL code has been seen in the field that inadvertently has bits set
4596 above bit 15. This feature is optional and is enabled if the BIOS
4598 any Windows OSI strings. It can also be enabled by the host OS. Matthew
4601 Added support to limit the maximum time for the ASL Sleep() operator. To
4602 prevent accidental deep sleeps, limit the maximum time that Sleep() will
4603 actually sleep. Configurable, the default maximum is two seconds. ACPICA
4606 Added run-time validation support for the _WDG and_WED Microsoft
4608 methods. These objects are defined by "Windows Instrumentation", and are
4610 part of the ACPI spec. ACPICA BZ 860.
4612 Expanded all statistic counters used during namespace and device
4613 initialization from 16 to 32 bits in order to support very large
4616 Replaced all instances of %d in printf format specifiers with %u since
4618 all integers in ACPICA are unsigned.
4620 Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly
4624 Example Code and Data Size: These are the sizes for the OS-independent
4625 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4626 debug version of the code includes the debug output trace mechanism and
4628 much larger code and data size.
4631 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
4632 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
4634 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
4635 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
4637 2) iASL Compiler/Disassembler and Tools:
4639 iASL: Added compiler support for the _WDG and_WED Microsoft predefined
4640 methods. These objects are defined by "Windows Instrumentation", and are
4642 part of the ACPI spec. ACPICA BZ 860.
4644 AcpiExec: added option to disable the memory tracking mechanism. The -dt
4645 option will disable the tracking mechanism, which improves performance
4648 AcpiExec: Restructured the command line options into -d (disable) and -e
4651 ----------------------------------------
4652 28 April 2010. Summary of changes for version 20100428:
4654 1) ACPI CA Core Subsystem:
4656 Implemented GPE support for dynamically loaded ACPI tables. For all GPEs,
4657 including FADT-based and GPE Block Devices, execute any _PRW methods in
4659 new table, and process any _Lxx/_Exx GPE methods in the new table. Any
4660 runtime GPE that is referenced by an _Lxx/_Exx method in the new table is
4661 immediately enabled. Handles the FADT-defined GPEs as well as GPE Block
4662 Devices. Provides compatibility with other ACPI implementations. Two new
4663 files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob
4666 Fixed a regression introduced in version 20100331 within the table
4668 where initial table loading could fail. This was introduced in the fix
4670 AcpiReallocateRootTable. Also, renamed some of fields in the table
4672 data structures to clarify their meaning and use.
4674 Fixed a possible allocation overrun during internal object copy in
4675 AcpiUtCopySimpleObject. The original code did not correctly handle the
4677 where the object to be copied was a namespace node. Lin Ming. ACPICA BZ
4680 Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a
4681 possible access beyond end-of-allocation. Also, now fully validate
4683 (size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847
4685 Example Code and Data Size: These are the sizes for the OS-independent
4686 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4687 debug version of the code includes the debug output trace mechanism and
4689 much larger code and data size.
4692 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
4693 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
4695 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
4696 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
4698 2) iASL Compiler/Disassembler and Tools:
4700 iASL: Implemented Min/Max/Len/Gran validation for address resource
4701 descriptors. This change implements validation for the address fields
4703 are common to all address-type resource descriptors. These checks are
4704 implemented: Checks for valid Min/Max, length within the Min/Max window,
4705 valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as
4707 table 6-40 in the ACPI 4.0a specification. Also split the large
4709 and aslrestype2.c files into five new files. ACPICA BZ 840.
4711 iASL: Added support for the _Wxx predefined names. This support was
4713 and these names were not recognized by the compiler as valid predefined
4714 names. ACPICA BZ 851.
4716 iASL: Added an error for all predefined names that are defined to return
4718 value and thus must be implemented as Control Methods. These include all
4720 the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous
4721 names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856.
4723 iASL: Implemented the -ts option to emit hex AML data in ASL format, as
4725 ASL Buffer. Allows ACPI tables to be easily included within ASL files, to
4727 dynamically loaded via the Load() operator. Also cleaned up output for
4730 ta and -tc options. ACPICA BZ 853.
4732 Tests: Added a new file with examples of extended iASL error checking.
4733 Demonstrates the advanced error checking ability of the iASL compiler.
4734 Available at tests/misc/badcode.asl.
4736 ----------------------------------------
4737 31 March 2010. Summary of changes for version 20100331:
4739 1) ACPI CA Core Subsystem:
4741 Completed a major update for the GPE support in order to improve support
4743 shared GPEs and to simplify both host OS and ACPICA code. Added a
4745 count mechanism to support shared GPEs that require multiple device
4747 Several external interfaces have changed. One external interface has been
4748 removed. One new external interface was added. Most of the GPE external
4749 interfaces now use the GPE spinlock instead of the events mutex (and the
4750 Flags parameter for many GPE interfaces has been removed.) See the
4752 ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore,
4754 Wysocki. ACPICA BZ 831.
4757 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus
4763 Implemented write support for DataTable operation regions. These regions
4765 defined via the DataTableRegion() operator. Previously, only read support
4767 implemented. The ACPI specification allows DataTableRegions to be
4771 Implemented a new subsystem option to force a copy of the DSDT to local
4772 memory. Optionally copy the entire DSDT to local memory (instead of
4774 mapping it.) There are some (albeit very rare) BIOSs that corrupt or
4776 the original DSDT, creating the need for this option. Default is FALSE,
4780 Implemented detection of a corrupted or replaced DSDT. This change adds
4781 support to detect a DSDT that has been corrupted and/or replaced from
4783 the OS (by firmware). This is typically catastrophic for the system, but
4785 been seen on some machines. Once this problem has been detected, the DSDT
4786 copy option can be enabled via system configuration. Lin Ming, Bob Moore.
4788 Fixed two problems with AcpiReallocateRootTable during the root table
4790 When copying the root table to the new allocation, the length used was
4791 incorrect. The new size was used instead of the current table size,
4793 too much data was copied. Also, the count of available slots for ACPI
4795 was not set correctly. Alexey Starikovskiy, Bob Moore.
4797 Example Code and Data Size: These are the sizes for the OS-independent
4798 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4799 debug version of the code includes the debug output trace mechanism and
4801 much larger code and data size.
4804 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
4805 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
4807 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
4808 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
4810 2) iASL Compiler/Disassembler and Tools:
4812 iASL: Implement limited typechecking for values returned from predefined
4813 control methods. The type of any returned static (unnamed) object is now
4814 validated. For example, Return(1). ACPICA BZ 786.
4816 iASL: Fixed a predefined name object verification regression. Fixes a
4818 introduced in version 20100304. An error is incorrectly generated if a
4819 predefined name is declared as a static named object with a value defined
4820 using the keywords "Zero", "One", or "Ones". Lin Ming.
4822 iASL: Added Windows 7 support for the -g option (get local ACPI tables)
4824 reducing the requested registry access rights. ACPICA BZ 842.
4826 Disassembler: fixed a possible fault when generating External()
4828 Introduced in commit ae7d6fd: Properly handle externals with parent-
4830 (carat). Fixes a string length allocation calculation. Lin Ming.
4832 ----------------------------------------
4833 04 March 2010. Summary of changes for version 20100304:
4835 1) ACPI CA Core Subsystem:
4837 Fixed a possible problem with the AML Mutex handling function
4838 AcpiExReleaseMutex where the function could fault under the very rare
4839 condition when the interpreter has blocked, the interpreter lock is
4841 the interpreter is then reentered via the same thread, and attempts to
4842 acquire an AML mutex that was previously acquired. FreeBSD report 140979.
4846 Implemented additional configuration support for the AML "Debug Object".
4847 Output from the debug object can now be enabled via a global variable,
4848 AcpiGbl_EnableAmlDebugObject. This will assist with remote machine
4850 This debug output is now available in the release version of ACPICA
4852 of just the debug version. Also, the entire debug output module can now
4854 configured out of the ACPICA build if desired. One new file added,
4855 executer/exdebug.c. Lin Ming, Bob Moore.
4857 Added header support for the ACPI MCHI table (Management Controller Host
4858 Interface Table). This table was added in ACPI 4.0, but the defining
4860 has only recently become available.
4862 Standardized output of integer values for ACPICA warnings/errors. Always
4864 0x prefix for hex output, always use %u for unsigned integer decimal
4866 Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about
4868 invocations.) These invocations were converted from the original
4869 ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835.
4871 Example Code and Data Size: These are the sizes for the OS-independent
4872 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4873 debug version of the code includes the debug output trace mechanism and
4875 much larger code and data size.
4878 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
4879 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
4881 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
4882 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
4884 2) iASL Compiler/Disassembler and Tools:
4886 iASL: Implemented typechecking support for static (non-control method)
4887 predefined named objects that are declared with the Name() operator. For
4888 example, the type of this object is now validated to be of type Integer:
4889 Name(_BBN, 1). This change migrates the compiler to using the core
4891 name table instead of maintaining a local version. Added a new file,
4892 aslpredef.c. ACPICA BZ 832.
4894 Disassembler: Added support for the ACPI 4.0 MCHI table.
4896 ----------------------------------------
4897 21 January 2010. Summary of changes for version 20100121:
4899 1) ACPI CA Core Subsystem:
4901 Added the 2010 copyright to all module headers and signons. This affects
4902 virtually every file in the ACPICA core subsystem, the iASL compiler, the
4903 tools/utilities, and the test suites.
4905 Implemented a change to the AcpiGetDevices interface to eliminate
4907 invocations of the _STA method. In the case where a specific _HID is
4908 requested, do not run _STA until a _HID match is found. This eliminates
4909 potentially dozens of _STA calls during a search for a particular
4911 which in turn can improve boot times. ACPICA BZ 828. Lin Ming.
4913 Implemented an additional repair for predefined method return values.
4915 to repair unexpected NULL elements within returned Package objects.
4918 Integer of value zero, a NULL String, or a zero-length Buffer as
4920 ACPICA BZ 818. Lin Ming, Bob Moore.
4922 Removed the obsolete ACPI_INTEGER data type. This type was introduced as
4924 code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0
4926 64-bit AML integers). It is now obsolete and this change removes it from
4928 ACPICA code base, replaced by UINT64. The original typedef has been
4930 for now for compatibility with existing device driver code. ACPICA BZ
4933 Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field
4935 the parse tree object.
4937 Added additional warning options for the gcc-4 generation. Updated the
4939 accordingly. This includes some code restructuring to eliminate
4941 code, elimination of some gotos, elimination of unused return values,
4943 additional casting, and removal of redundant declarations.
4945 Example Code and Data Size: These are the sizes for the OS-independent
4946 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4947 debug version of the code includes the debug output trace mechanism and
4949 much larger code and data size.
4952 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
4953 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
4955 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
4956 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
4958 2) iASL Compiler/Disassembler and Tools:
4960 No functional changes for this release.
4962 ----------------------------------------
4963 14 December 2009. Summary of changes for version 20091214:
4965 1) ACPI CA Core Subsystem:
4967 Enhanced automatic data type conversions for predefined name repairs.
4969 change expands the automatic repairs/conversions for predefined name
4971 values to make Integers, Strings, and Buffers fully interchangeable.
4974 Buffer can be converted to a Package of Integers if necessary. The
4976 module was completely restructured. Lin Ming, Bob Moore.
4978 Implemented automatic removal of null package elements during predefined
4980 repairs. This change will automatically remove embedded and trailing NULL
4981 package elements from returned package objects that are defined to
4984 variable number of sub-packages. The driver is then presented with a
4986 with no null elements to deal with. ACPICA BZ 819.
4988 Implemented a repair for the predefined _FDE and _GTM names. The expected
4989 return value for both names is a Buffer of 5 DWORDs. This repair fixes
4991 possible problems (both seen in the field), where a package of integers
4993 returned, or a buffer of BYTEs is returned. With assistance from Jung-uk
4996 Implemented additional module-level code support. This change will
4998 execute module-level code that is not at the root of the namespace (under
5000 Device object, etc.). Now executes the code within the current scope
5002 of the root. ACPICA BZ 762. Lin Ming.
5004 Fixed possible mutex acquisition errors when running _REG methods. Fixes
5006 problem where mutex errors can occur when running a _REG method that is
5008 the same scope as a method-defined operation region or an operation
5010 under a module-level IF block. This type of code is rare, so the problem
5012 not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore.
5014 Fixed a possible memory leak during module-level code execution. An
5016 could be leaked for each block of executed module-level code if the
5017 interpreter slack mode is enabled This change deletes any implicitly
5019 object from the module-level code block. Lin Ming.
5021 Removed messages for successful predefined repair(s). The repair
5023 was considered too wordy. Now, messages are only unconditionally emitted
5025 the return object cannot be repaired. Existing messages for successful
5026 repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ
5029 Example Code and Data Size: These are the sizes for the OS-independent
5030 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5031 debug version of the code includes the debug output trace mechanism and
5033 much larger code and data size.
5036 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
5037 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
5039 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
5040 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
5042 2) iASL Compiler/Disassembler and Tools:
5044 iASL: Fixed a regression introduced in 20091112 where intermediate .SRC
5046 were no longer automatically removed at the termination of the compile.
5048 acpiexec: Implemented the -f option to specify default region fill value.
5049 This option specifies the value used to initialize buffers that simulate
5050 operation regions. Default value is zero. Useful for debugging problems
5052 depend on a specific initial value for a region or field.
5054 ----------------------------------------
5055 12 November 2009. Summary of changes for version 20091112:
5057 1) ACPI CA Core Subsystem:
5059 Implemented a post-order callback to AcpiWalkNamespace. The existing
5060 interface only has a pre-order callback. This change adds an additional
5061 parameter for a post-order callback which will be more useful for bus
5063 ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference.
5065 Modified the behavior of the operation region memory mapping cache for
5066 SystemMemory. Ensure that the memory mappings created for operation
5068 do not cross 4K page boundaries. Crossing a page boundary while mapping
5069 regions can cause kernel warnings on some hosts if the pages have
5071 attributes. Such regions are probably BIOS bugs, and this is the
5073 Linux BZ 14445. Lin Ming.
5075 Implemented an automatic repair for predefined methods that must return
5076 sorted lists. This change will repair (by sorting) packages returned by
5078 _PSS, and _TSS. Drivers can now assume that the packages are correctly
5080 and do not contain NULL package elements. Adds one new file,
5081 namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore.
5083 Fixed a possible fault during predefined name validation if a return
5085 object contains NULL elements. Also adds a warning if a NULL element is
5086 followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement
5088 include repair or removal of all such NULL elements where possible.
5090 Implemented additional module-level executable AML code support. This
5092 will execute module-level code that is not at the root of the namespace
5093 (under a Device object, etc.) at table load time. Module-level executable
5095 code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming.
5097 Implemented a new internal function to create Integer objects. This
5099 simplifies miscellaneous object creation code. ACPICA BZ 823.
5101 Reduced the severity of predefined repair messages, Warning to Info.
5103 the object was successfully repaired, a warning is too severe. Reduced to
5105 info message for now. These messages may eventually be changed to debug-
5109 Example Code and Data Size: These are the sizes for the OS-independent
5110 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5111 debug version of the code includes the debug output trace mechanism and
5113 much larger code and data size.
5116 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
5117 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
5119 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
5120 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
5122 2) iASL Compiler/Disassembler and Tools:
5124 iASL: Implemented Switch() with While(1) so that Break works correctly.
5126 change correctly implements the Switch operator with a surrounding
5128 so that the Break operator works as expected. ACPICA BZ 461. Lin Ming.
5130 iASL: Added a message if a package initializer list is shorter than
5132 length. Adds a new remark for a Package() declaration if an initializer
5134 exists, but is shorter than the declared length of the package. Although
5135 technically legal, this is probably a coding error and it is seen in the
5136 field. ACPICA BZ 815. Lin Ming, Bob Moore.
5138 iASL: Fixed a problem where the compiler could fault after the maximum
5140 of errors was reached (200).
5142 acpixtract: Fixed a possible warning for pointer cast if the compiler
5144 level set very high.
5146 ----------------------------------------
5147 13 October 2009. Summary of changes for version 20091013:
5149 1) ACPI CA Core Subsystem:
5151 Fixed a problem where an Operation Region _REG method could be executed
5153 than once. If a custom address space handler is installed by the host
5155 the "initialize operation regions" phase of the ACPICA initialization,
5157 _REG methods for that address space could be executed twice. This change
5158 fixes the problem. ACPICA BZ 427. Lin Ming.
5160 Fixed a possible memory leak for the Scope() ASL operator. When the exact
5161 invocation of "Scope(\)" is executed (change scope to root), one internal
5162 operand object was leaked. Lin Ming.
5164 Implemented a run-time repair for the _MAT predefined method. If the _MAT
5165 return value is defined as a Field object in the AML, and the field
5166 size is less than or equal to the default width of an integer (32 or
5168 can incorrectly return an Integer instead of a Buffer. ACPICA now
5169 automatically repairs this problem. ACPICA BZ 810.
5171 Implemented a run-time repair for the _BIF and _BIX predefined methods.
5173 "OEM Information" field is often incorrectly returned as an Integer with
5174 value zero if the field is not supported by the platform. This is due to
5176 ambiguity in the ACPI specification. The field should always be a string.
5177 ACPICA now automatically repairs this problem by returning a NULL string
5178 within the returned Package. ACPICA BZ 807.
5180 Example Code and Data Size: These are the sizes for the OS-independent
5181 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5182 debug version of the code includes the debug output trace mechanism and
5184 much larger code and data size.
5187 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
5188 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
5190 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
5191 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
5193 2) iASL Compiler/Disassembler and Tools:
5195 Disassembler: Fixed a problem where references to external symbols that
5196 contained one or more parent-prefixes (carats) were not handled
5198 possibly causing a fault. ACPICA BZ 806. Lin Ming.
5200 Disassembler: Restructured the code so that all functions that handle
5201 external symbols are in a single module. One new file is added,
5204 AML Debugger: Added a max count argument for the Batch command (which
5205 executes multiple predefined methods within the namespace.)
5207 iASL: Updated the compiler documentation (User Reference.) Available at
5208 http://www.acpica.org/documentation/. ACPICA BZ 750.
5210 AcpiXtract: Updated for Lint and other formatting changes. Close all open
5213 ----------------------------------------
5214 03 September 2009. Summary of changes for version 20090903:
5216 1) ACPI CA Core Subsystem:
5218 For Windows Vista compatibility, added the automatic execution of an _INI
5219 method located at the namespace root (\_INI). This method is executed at
5220 table load time. This support is in addition to the automatic execution
5222 \_SB._INI. Lin Ming.
5224 Fixed a possible memory leak in the interpreter for AML package objects
5226 the package initializer list is longer than the defined size of the
5228 This apparently can only happen if the BIOS changes the package size on
5230 fly (seen in a _PSS object), as ASL compilers do not allow this. The
5231 interpreter will truncate the package to the defined size (and issue an
5233 message), but previously could leave the extra objects undeleted if they
5235 pre-created during the argument processing (such is the case if the
5237 consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805.
5239 Fixed a problem seen when a Buffer or String is stored to itself via ASL.
5240 This has been reported in the field. Previously, ACPICA would zero out
5242 buffer/string. Now, the operation is treated as a noop. Provides Windows
5243 compatibility. ACPICA BZ 803. Lin Ming.
5245 Removed an extraneous error message for ASL constructs of the form
5246 Store(LocalX,LocalX) when LocalX is uninitialized. These curious
5248 are seen in many BIOSs and are once again treated as NOOPs and no error
5250 emitted when they are encountered. ACPICA BZ 785.
5252 Fixed an extraneous warning message if a _DSM reserved method returns a
5253 Package object. _DSM can return any type of object, so validation on the
5254 return type cannot be performed. ACPICA BZ 802.
5256 Example Code and Data Size: These are the sizes for the OS-independent
5257 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5258 debug version of the code includes the debug output trace mechanism and
5260 much larger code and data size.
5263 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
5264 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
5266 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
5267 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
5269 2) iASL Compiler/Disassembler and Tools:
5271 iASL: Fixed a problem with the use of the Alias operator and Resource
5272 Templates. The correct alias is now constructed and no error is emitted.
5275 iASL: Implemented the -I option to specify additional search directories
5277 include files. Allows multiple additional search paths for include files.
5278 Directories are searched in the order specified on the command line
5280 the local directory is searched.) ACPICA BZ 800.
5282 iASL: Fixed a problem where the full pathname for include files was not
5283 emitted for warnings/errors. This caused the IDE support to not work
5284 properly. ACPICA BZ 765.
5286 iASL: Implemented the -@ option to specify a Windows-style response file
5287 containing additional command line options. ACPICA BZ 801.
5289 AcpiExec: Added support to load multiple AML files simultaneously (such
5292 DSDT and multiple SSDTs). Also added support for wildcards within the AML
5293 pathname. These features allow all machine tables to be easily loaded and
5294 debugged together. ACPICA BZ 804.
5296 Disassembler: Added missing support for disassembly of HEST table Error
5300 ----------------------------------------
5301 30 July 2009. Summary of changes for version 20090730:
5303 The ACPI 4.0 implementation for ACPICA is complete with this release.
5305 1) ACPI CA Core Subsystem:
5307 ACPI 4.0: Added header file support for all new and changed ACPI tables.
5308 Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are
5310 for ACPI 4.0, but have previously been supported in ACPICA are: CPEP,
5312 EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT.
5314 have been some ACPI 4.0 changes to other existing tables. Split the large
5315 actbl1.h header into the existing actbl2.h header. ACPICA BZ 774.
5317 ACPI 4.0: Implemented predefined name validation for all new names. There
5319 31 new names in ACPI 4.0. The predefined validation module was split into
5321 files. The new file is namespace/nsrepair.c. ACPICA BZ 770.
5323 Implemented support for so-called "module-level executable code". This is
5324 executable AML code that exists outside of any control method and is
5326 to be executed at table load time. Although illegal since ACPI 2.0, this
5328 of code still exists and is apparently still being created. Blocks of
5330 code are now detected and executed as intended. Currently, the code
5332 must exist under either an If, Else, or While construct; these are the
5333 typical cases seen in the field. ACPICA BZ 762. Lin Ming.
5335 Implemented an automatic dynamic repair for predefined names that return
5336 nested Package objects. This applies to predefined names that are defined
5338 return a variable-length Package of sub-packages. If the number of sub-
5339 packages is one, BIOS code is occasionally seen that creates a simple
5341 package with no sub-packages. This code attempts to fix the problem by
5342 wrapping a new package object around the existing package. These methods
5344 be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA
5348 Fixed a regression introduced in 20090625 for the AcpiGetDevices
5350 The _HID/_CID matching was broken and no longer matched IDs correctly.
5354 Fixed a problem with AcpiReset where the reset would silently fail if the
5355 register was one of the protected I/O ports. AcpiReset now bypasses the
5357 validation mechanism. This may eventually be driven into the
5361 Fixed a regression related to the recent update of the AcpiRead/Write
5362 interfaces. A sleep/suspend could fail if the optional PM2 Control
5364 does not exist during an attempt to write the Bus Master Arbitration bit.
5365 (However, some hosts already delete the code that writes this bit, and
5367 code may in fact be obsolete at this date.) ACPICA BZ 799.
5369 Fixed a problem where AcpiTerminate could fault if inadvertently called
5371 in succession. ACPICA BZ 795.
5373 Example Code and Data Size: These are the sizes for the OS-independent
5374 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5375 debug version of the code includes the debug output trace mechanism and
5377 much larger code and data size.
5380 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
5381 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
5383 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
5384 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
5386 2) iASL Compiler/Disassembler and Tools:
5388 ACPI 4.0: Implemented disassembler support for all new ACPI tables and
5389 changes to existing tables. ACPICA BZ 775.
5391 ----------------------------------------
5392 25 June 2009. Summary of changes for version 20090625:
5394 The ACPI 4.0 Specification was released on June 16 and is available at
5395 www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will
5396 continue for the next few releases.
5398 1) ACPI CA Core Subsystem:
5400 ACPI 4.0: Implemented interpreter support for the IPMI operation region
5401 address space. Includes support for bi-directional data buffers and an
5403 address space handler (to be installed by an IPMI device driver.) ACPICA
5407 ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT.
5409 support in both the header files and the disassembler.
5411 Completed a major update for the AcpiGetObjectInfo external interface.
5413 - Support for variable, unlimited length HID, UID, and CID strings.
5414 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA,
5416 - Call the _SxW power methods on behalf of a device object.
5417 - Determine if a device is a PCI root bridge.
5418 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO.
5419 These changes will require an update to all callers of this interface.
5421 the updated ACPICA Programmer Reference for details. One new source file
5423 been added - utilities/utids.c. ACPICA BZ 368, 780.
5425 Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit
5426 transfers. The Value parameter has been extended from 32 bits to 64 bits
5428 order to support new ACPI 4.0 tables. These changes will require an
5431 all callers of these interfaces. See the ACPICA Programmer Reference for
5432 details. ACPICA BZ 768.
5434 Fixed several problems with AcpiAttachData. The handler was not invoked
5436 the host node was deleted. The data sub-object was not automatically
5438 when the host node was deleted. The interface to the handler had an
5440 parameter, this was removed. ACPICA BZ 778.
5442 Enhanced the function that dumps ACPI table headers. All non-printable
5443 characters in the string fields are now replaced with '?' (Signature,
5445 OemTableId, and CompilerId.) ACPI tables with non-printable characters in
5446 these fields are occasionally seen in the field. ACPICA BZ 788.
5448 Fixed a problem with predefined method repair code where the code that
5449 attempts to repair/convert an object of incorrect type is only executed
5451 the first time the predefined method is called. The mechanism that
5453 warnings on subsequent calls was interfering with the repair mechanism.
5456 Fixed a possible memory leak in the predefined validation/repair code
5459 buffer is automatically converted to an expected string object.
5461 Removed obsolete 16-bit files from the distribution and from the current
5463 tree head. ACPICA BZ 776.
5465 Example Code and Data Size: These are the sizes for the OS-independent
5466 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5467 debug version of the code includes the debug output trace mechanism and
5469 much larger code and data size.
5472 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
5473 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
5475 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
5476 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
5478 2) iASL Compiler/Disassembler and Tools:
5480 ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI
5481 operation region keyword. ACPICA BZ 771, 772. Lin Ming.
5483 ACPI 4.0: iASL - implemented compile-time validation support for all new
5484 predefined names and control methods (31 total). ACPICA BZ 769.
5486 ----------------------------------------
5487 21 May 2009. Summary of changes for version 20090521:
5489 1) ACPI CA Core Subsystem:
5491 Disabled the preservation of the SCI enable bit in the PM1 control
5493 The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification
5496 a "preserved" bit - "OSPM always preserves this bit position", section
5497 4.7.3.2.1. However, some machines fail if this bit is in fact preserved
5498 because the bit needs to be explicitly set by the OS as a workaround. No
5499 machines fail if the bit is not preserved. Therefore, ACPICA no longer
5500 attempts to preserve this bit.
5502 Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or
5503 incorrectly formed _PRT package could cause a fault. Added validation to
5504 ensure that each package element is actually a sub-package.
5506 Implemented a new interface to install or override a single control
5508 AcpiInstallMethod. This interface is useful when debugging in order to
5510 an existing method or to install a missing method without having to
5512 the entire ACPI table. See the ACPICA Programmer Reference for use and
5513 examples. Lin Ming, Bob Moore.
5515 Fixed several reference count issues with the DdbHandle object that is
5516 created from a Load or LoadTable operator. Prevent premature deletion of
5518 object. Also, mark the object as invalid once the table has been
5520 This is needed because the handle itself may not be deleted after the
5522 unload, depending on whether it has been stored in a named object by the
5525 Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple
5526 mutexes of the same sync level are acquired but then not released in
5528 opposite order, the internally maintained Current Sync Level becomes
5530 and can cause subsequent execution errors. ACPICA BZ 471.
5532 Changed the allowable release order for ASL mutex objects. The ACPI 4.0
5533 specification has been changed to make the SyncLevel for mutex objects
5535 useful. When releasing a mutex, the SyncLevel of the mutex must now be
5537 same as the current sync level. This makes more sense than the previous
5539 (SyncLevel less than or equal). This change updates the code to match the
5542 Fixed a problem with the local version of the AcpiOsPurgeCache function.
5544 (local) cache must be locked during all cache object deletions. Andrew
5547 Updated the Load operator to use operation region interfaces. This
5549 direct memory mapping with region access calls. Now, all region accesses
5551 through the installed region handler as they should.
5553 Simplified and optimized the NsGetNextNode function. Reduced parameter
5555 and reduced code for this frequently used function.
5557 Example Code and Data Size: These are the sizes for the OS-independent
5558 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5559 debug version of the code includes the debug output trace mechanism and
5561 much larger code and data size.
5564 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
5565 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
5567 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
5568 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
5570 2) iASL Compiler/Disassembler and Tools:
5572 Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some
5574 with sub-table disassembly and handling invalid sub-tables. Attempt
5576 after an invalid sub-table ID.
5578 ----------------------------------------
5579 22 April 2009. Summary of changes for version 20090422:
5581 1) ACPI CA Core Subsystem:
5583 Fixed a compatibility issue with the recently released I/O port
5585 mechanism. For windows compatibility, 1) On a port protection violation,
5586 simply ignore the request and do not return an exception (allow the
5588 method to continue execution.) 2) If only part of the request overlaps a
5589 protected port, read/write the individual ports that are not protected.
5593 Enhanced the execution of the ASL/AML BreakPoint operator so that it
5595 breaks into the AML debugger if the debugger is present. This matches the
5596 ACPI-defined behavior.
5598 Fixed several possible warnings related to the use of the configurable
5599 ACPI_THREAD_ID. This type can now be configured as either an integer or a
5600 pointer with no warnings. Also fixes several warnings in printf-like
5601 statements for the 64-bit build when the type is configured as a pointer.
5604 Fixed a number of possible warnings when compiling with gcc 4+ (depending
5606 warning options.) Examples include printf formats, aliasing, unused
5608 missing prototypes, missing switch default statements, use of non-ANSI
5609 library functions, use of non-ANSI constructs. See generate/unix/Makefile
5611 a list of warning options used with gcc 3 and 4. ACPICA BZ 735.
5613 Example Code and Data Size: These are the sizes for the OS-independent
5614 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5615 debug version of the code includes the debug output trace mechanism and
5617 much larger code and data size.
5620 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
5621 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
5623 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
5624 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
5626 2) iASL Compiler/Disassembler and Tools:
5628 iASL: Fixed a generation warning from Bison 2.3 and fixed several
5633 iASL: Fixed a problem where the Unix/Linux versions of the compiler could
5635 correctly digest Windows/DOS formatted files (with CR/LF).
5637 iASL: Added a new option for "quiet mode" (-va) that produces only the
5638 compilation summary, not individual errors and warnings. Useful for large
5641 AcpiExec: Implemented a new option (-z) to enable a forced
5643 timeout that can be used to detect hang conditions during execution of
5645 code (includes both internal semaphores and AML-defined mutexes and
5648 Added new makefiles for the generation of acpica in a generic unix-like
5649 environment. These makefiles are intended to generate the acpica tools
5651 utilities from the original acpica git source tree structure.
5653 Test Suites: Updated and cleaned up the documentation files. Updated the
5654 copyrights to 2009, affecting all source files. Use the new version of
5656 with quiet mode. Increased the number of available semaphores in the
5658 OSL, allowing the aslts to execute fully on Windows. For the Unix OSL,
5660 an alternate implementation of the semaphore timeout to allow aslts to
5661 execute fully on Cygwin.
5663 ----------------------------------------
5664 20 March 2009. Summary of changes for version 20090320:
5666 1) ACPI CA Core Subsystem:
5668 Fixed a possible race condition between AcpiWalkNamespace and dynamic
5670 unloads. Added a reader/writer locking mechanism to allow multiple
5672 namespace walks (readers), but block a dynamic table unload until it can
5674 exclusive write access to the namespace. This fixes a problem where a
5676 unload could (possibly catastrophically) delete the portion of the
5678 that is currently being examined by a walk. Adds a new file, utlock.c,
5680 implements the reader/writer lock mechanism. ACPICA BZ 749.
5682 Fixed a regression introduced in version 20090220 where a change to the
5684 handling could cause the ACPICA subsystem to access non-existent I/O
5687 Modified the handling of FADT register and table (FACS/DSDT) addresses.
5689 FADT can contain both 32-bit and 64-bit versions of these addresses.
5690 Previously, the 64-bit versions were favored, meaning that if both 32 and
5692 versions were valid, but not equal, the 64-bit version was used. This was
5693 found to cause some machines to fail. Now, in this case, the 32-bit
5695 is used instead. This now matches the Windows behavior.
5697 Implemented a new mechanism to protect certain I/O ports. Provides
5699 compatibility and protects the standard PC I/O ports from access via AML
5700 code. Adds a new file, hwvalid.c
5702 Fixed a possible extraneous warning message from the FADT support. The
5703 message warns of a 32/64 length mismatch between the legacy and GAS
5704 definitions for a register.
5706 Removed the obsolete AcpiOsValidateAddress OSL interface. This interface
5708 made obsolete by the port protection mechanism above. It was previously
5710 to validate the entire address range of an operation region, which could
5712 incorrect if the range included illegal ports, but fields within the
5713 operation region did not actually access those ports. Validation is now
5714 performed on a per-field basis instead of the entire region.
5716 Modified the handling of the PM1 Status Register ignored bit (bit 11.)
5717 Ignored bits must be "preserved" according to the ACPI spec. Usually,
5719 means a read/modify/write when writing to the register. However, for
5721 registers, writing a one means clear the event. Writing a zero means
5723 the event (do not clear.) This behavior is clarified in the ACPI 4.0
5725 and the ACPICA code now simply always writes a zero to the ignored bit.
5727 Modified the handling of ignored bits for the PM1 A/B Control Registers.
5729 per the ACPI specification, for the control registers, preserve
5730 (read/modify/write) all bits that are defined as either reserved or
5733 Updated the handling of write-only bits in the PM1 A/B Control Registers.
5734 When reading the register, zero the write-only bits as per the ACPI spec.
5735 ACPICA BZ 443. Lin Ming.
5737 Removed "Linux" from the list of supported _OSI strings. Linux no longer
5738 wants to reply true to this request. The Windows strings are the only
5740 through the AML that are tested and known to work properly.
5743 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
5744 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
5746 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
5747 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
5749 2) iASL Compiler/Disassembler and Tools:
5751 Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c
5755 ----------------------------------------
5756 20 February 2009. Summary of changes for version 20090220:
5758 1) ACPI CA Core Subsystem:
5760 Optimized the ACPI register locking. Removed locking for reads from the
5762 bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock
5764 not required when reading the single-bit registers. The
5765 AcpiGetRegisterUnlocked function is no longer needed and has been
5767 This will improve performance for reads on these registers. ACPICA BZ
5770 Fixed the parameter validation for AcpiRead/Write. Now return
5771 AE_BAD_PARAMETER if the input register pointer is null, and
5774 the register has an address of zero. Previously, these cases simply
5776 AE_OK. For optional registers such as PM1B status/enable/control, the
5778 should check for a valid register address before calling. ACPICA BZ 748.
5780 Renamed the external ACPI bit register access functions. Renamed
5781 AcpiGetRegister and AcpiSetRegister to clarify the purpose of these
5782 functions. The new names are AcpiReadBitRegister and
5783 AcpiWriteBitRegister.
5784 Also, restructured the code for these functions by simplifying the code
5786 and condensing duplicate code to reduce code size.
5788 Added new functions to transparently handle the possibly split PM1 A/B
5789 registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two
5791 now handle the split registers for PM1 Status, Enable, and Control.
5796 Added a function to handle the PM1 control registers,
5797 AcpiHwWritePm1Control.
5798 This function writes both of the PM1 control registers (A/B). These
5800 are different than the PM1 A/B status and enable registers in that
5802 values can be written to the A/B registers. Most notably, the SLP_TYP
5804 can be different, as per the values returned from the _Sx predefined
5807 Removed an extra register write within AcpiHwClearAcpiStatus. This
5809 was writing an optional PM1B status register twice. The existing call to
5811 low-level AcpiHwRegisterWrite automatically handles a possibly split PM1
5813 register. ACPICA BZ 751.
5815 Split out the PM1 Status registers from the FADT. Added new globals for
5817 registers (A/B), similar to the way the PM1 Enable registers are handled.
5818 Instead of overloading the FADT Event Register blocks. This makes the
5820 clearer and less prone to error.
5822 Fixed the warning message for when the platform contains too many ACPI
5824 for the default size of the global root table data structure. The
5826 for the truncation value was incorrect.
5828 Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this
5829 obsolete macro, since it is now a simple reference to ->common.type.
5831 were about 150 invocations of the macro across 41 files. ACPICA BZ 755.
5833 Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as
5834 TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to
5835 simply SLEEP_TYPE. ACPICA BZ 754.
5837 Conditionally compile the AcpiSetFirmwareWakingVector64 function. This
5838 function is only needed on 64-bit host operating systems and is thus not
5839 included for 32-bit hosts.
5841 Debug output: print the input and result for invocations of the _OSI
5843 control method via the ACPI_LV_INFO debug level. Also, reduced some of
5845 verbosity of this debug level. Len Brown.
5847 Example Code and Data Size: These are the sizes for the OS-independent
5848 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5849 debug version of the code includes the debug output trace mechanism and
5851 much larger code and data size.
5854 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
5855 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
5857 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
5858 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
5860 2) iASL Compiler/Disassembler and Tools:
5862 Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the
5863 various legal performance profiles.
5865 ----------------------------------------
5866 23 January 2009. Summary of changes for version 20090123:
5868 1) ACPI CA Core Subsystem:
5870 Added the 2009 copyright to all module headers and signons. This affects
5871 virtually every file in the ACPICA core subsystem, the iASL compiler, and
5872 the tools/utilities.
5874 Implemented a change to allow the host to override any ACPI table,
5876 dynamically loaded tables. Previously, only the DSDT could be replaced by
5878 host. With this change, the AcpiOsTableOverride interface is called for
5880 table found in the RSDT/XSDT during ACPICA initialization, and also
5882 a table is dynamically loaded via the AML Load operator.
5884 Updated FADT flag definitions, especially the Boot Architecture flags.
5886 Debugger: For the Find command, automatically pad the input ACPI name
5888 underscores if the name is shorter than 4 characters. This enables a
5890 with the actual namespace entry which is itself padded with underscores.
5892 Example Code and Data Size: These are the sizes for the OS-independent
5893 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5894 debug version of the code includes the debug output trace mechanism and
5896 much larger code and data size.
5899 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
5900 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
5902 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
5903 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
5905 2) iASL Compiler/Disassembler and Tools:
5907 Fix build error under Bison-2.4.
5909 Dissasembler: Enhanced FADT support. Added decoding of the Boot
5911 flags. Now decode all flags, regardless of the FADT version. Flag output
5912 includes the FADT version which first defined each flag.
5914 The iASL -g option now dumps the RSDT to a file (in addition to the FADT
5916 DSDT). Windows only.
5918 ----------------------------------------
5919 04 December 2008. Summary of changes for version 20081204:
5921 1) ACPI CA Core Subsystem:
5923 The ACPICA Programmer Reference has been completely updated and revamped
5925 this release. This includes updates to the external interfaces, OSL
5926 interfaces, the overview sections, and the debugger reference.
5928 Several new ACPICA interfaces have been implemented and documented in the
5929 programmer reference:
5930 AcpiReset - Writes the reset value to the FADT-defined reset register.
5931 AcpiDisableAllGpes - Disable all available GPEs.
5932 AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs.
5933 AcpiGetGpeDevice - Get the GPE block device associated with a GPE.
5934 AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs.
5935 AcpiRead - Low-level read ACPI register (was HwLowLevelRead.)
5936 AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.)
5938 Most of the public ACPI hardware-related interfaces have been moved to a
5940 file, components/hardware/hwxface.c
5942 Enhanced the FADT parsing and low-level ACPI register access: The ACPI
5943 register lengths within the FADT are now used, and the low level ACPI
5944 register access no longer hardcodes the ACPI register lengths. Given that
5945 there may be some risk in actually trusting the FADT register lengths, a
5947 time option was added to fall back to the default hardcoded lengths if
5949 FADT proves to contain incorrect values - UseDefaultRegisterWidths. This
5950 option is set to true for now, and a warning is issued if a suspicious
5952 register length is overridden with the default value.
5954 Fixed a reference count issue in NsRepairObject. This problem was
5956 in version 20081031 as part of a fix to repair Buffer objects within
5959 Added semaphore support to the Linux/Unix application OS-services layer
5960 (OSL). ACPICA BZ 448. Lin Ming.
5962 Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes
5964 be implemented in the OSL, or will binary semaphores be used instead.
5966 Example Code and Data Size: These are the sizes for the OS-independent
5967 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5968 debug version of the code includes the debug output trace mechanism and
5970 much larger code and data size.
5973 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
5974 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
5976 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
5977 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
5979 2) iASL Compiler/Disassembler and Tools:
5981 iASL: Completed the '-e' option to include additional ACPI tables in
5984 aid with disassembly and External statement generation. ACPICA BZ 742.
5988 iASL: Removed the "named object in while loop" error. The compiler cannot
5989 determine how many times a loop will execute. ACPICA BZ 730.
5991 Disassembler: Implemented support for FADT revision 2 (MS extension).
5995 Disassembler: Updates for several ACPI data tables (HEST, EINJ, and
5998 ----------------------------------------
5999 31 October 2008. Summary of changes for version 20081031:
6001 1) ACPI CA Core Subsystem:
6003 Restructured the ACPICA header files into public/private. acpi.h now
6005 only the "public" acpica headers. All other acpica headers are "private"
6007 should not be included by acpica users. One new file, accommon.h is used
6009 include the commonly used private headers for acpica code generation.
6011 plans include moving all private headers to a new subdirectory.
6013 Implemented an automatic Buffer->String return value conversion for
6014 predefined ACPI methods. For these methods (such as _BIF), added
6016 conversion for return objects that are required to be a String, but a
6018 was found instead. This can happen when reading string battery data from
6020 operation region, because it used to be difficult to convert the data
6022 buffer to string from within the ASL. Ensures that the host OS is
6024 with a valid null-terminated string. Linux BZ 11822.
6026 Updated the FACS waking vector interfaces. Split
6027 AcpiSetFirmwareWakingVector
6028 into two: one for the 32-bit vector, another for the 64-bit vector. This
6030 required because the host OS must setup the wake much differently for
6032 vector (real vs. protected mode, etc.) and the interface itself should
6035 deciding which vector to use. Also, eliminated the
6036 GetFirmwareWakingVector
6037 interface, as it served no purpose (only the firmware reads the vector,
6039 only writes the vector.) ACPICA BZ 731.
6041 Implemented a mechanism to escape infinite AML While() loops. Added a
6043 counter to force exit from AML While loops if the count becomes too
6045 This can occur in poorly written AML when the hardware does not respond
6046 within a while loop and the loop does not implement a timeout. The
6048 loop count is configurable. A new exception code is returned when a loop
6050 broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore.
6052 Optimized the execution of AML While loops. Previously, a control state
6053 object was allocated and freed for each execution of the loop. The
6054 optimization is to simply reuse the control state for each iteration.
6056 speeds up the raw loop execution time by about 5%.
6058 Enhanced the implicit return mechanism. For Windows compatibility, return
6060 implicit integer of value zero for methods that contain no executable
6062 Such methods are seen in the field as stubs (presumably), and can cause
6063 drivers to fail if they expect a return value. Lin Ming.
6065 Allow multiple backslashes as root prefixes in namepaths. In a fully
6066 qualified namepath, allow multiple backslash prefixes. This can happen
6068 is seen in the field) because of the use of a double-backslash in strings
6069 (since backslash is the escape character) causing confusion. ACPICA BZ
6073 Emit a warning if two different FACS or DSDT tables are discovered in the
6074 FADT. Checks if there are two valid but different addresses for the FACS
6076 DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.)
6078 Consolidated the method argument count validation code. Merged the code
6080 validates control method argument counts into the predefined validation
6081 module. Eliminates possible multiple warnings for incorrect argument
6084 Implemented ACPICA example code. Includes code for ACPICA initialization,
6085 handler installation, and calling a control method. Available at
6086 source/tools/examples.
6088 Added a global pointer for FACS table to simplify internal FACS access.
6090 the global pointer instead of using AcpiGetTableByIndex for each FACS
6092 This simplifies the code for the Global Lock and the Firmware Waking
6095 Example Code and Data Size: These are the sizes for the OS-independent
6096 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6097 debug version of the code includes the debug output trace mechanism and
6099 much larger code and data size.
6102 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
6103 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
6105 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
6106 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
6108 2) iASL Compiler/Disassembler and Tools:
6110 iASL: Improved disassembly of external method calls. Added the -e option
6112 allow the inclusion of additional ACPI tables to help with the
6115 method invocations and the generation of external declarations during the
6116 disassembly. Certain external method invocations cannot be disassembled
6117 properly without the actual declaration of the method. Use the -e option
6119 include the table where the external method(s) are actually declared.
6121 useful for disassembling SSDTs that make method calls back to the master
6122 DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl
6124 -e dsdt.aml ssdt1.aml
6126 iASL: Fix to allow references to aliases within ASL namepaths. Fixes a
6127 problem where the use of an alias within a namepath would result in a not
6128 found error or cause the compiler to fault. Also now allows forward
6129 references from the Alias operator itself. ACPICA BZ 738.
6131 ----------------------------------------
6132 26 September 2008. Summary of changes for version 20080926:
6134 1) ACPI CA Core Subsystem:
6136 Designed and implemented a mechanism to validate predefined ACPI methods
6138 objects. This code validates the predefined ACPI objects (objects whose
6140 start with underscore) that appear in the namespace, at the time they are
6141 evaluated. The argument count and the type of the returned object are
6142 validated against the ACPI specification. The purpose of this validation
6144 to detect problems with the BIOS-implemented predefined ACPI objects
6146 the results are returned to the ACPI-related drivers. Future enhancements
6148 include actual repair of incorrect return objects where possible. Two new
6149 files are nspredef.c and acpredef.h.
6151 Fixed a fault in the AML parser if a memory allocation fails during the
6153 completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492.
6155 Fixed an issue with implicit return compatibility. This change improves
6157 implicit return mechanism to be more compatible with the MS interpreter.
6159 Ming, ACPICA BZ 349.
6161 Implemented support for zero-length buffer-to-string conversions. Allow
6163 length strings during interpreter buffer-to-string conversions. For
6165 during the ToDecimalString and ToHexString operators, as well as implicit
6166 conversions. Fiodor Suietov, ACPICA BZ 585.
6168 Fixed two possible memory leaks in the error exit paths of
6169 AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions
6171 similar in that they use a stack of state objects in order to eliminate
6172 recursion. The stack must be fully unwound and deallocated if an error
6173 occurs. Lin Ming. ACPICA BZ 383.
6175 Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the
6177 ACPI register table. This bit does not exist and is unused. Lin Ming, Bob
6178 Moore ACPICA BZ 442.
6180 Removed the obsolete version number in module headers. Removed the
6181 "$Revision" number that appeared in each module header. This version
6183 was useful under SourceSafe and CVS, but has no meaning under git. It is
6185 only incorrect, it could also be misleading.
6187 Example Code and Data Size: These are the sizes for the OS-independent
6188 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6189 debug version of the code includes the debug output trace mechanism and
6191 much larger code and data size.
6194 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
6195 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
6197 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
6198 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
6200 ----------------------------------------
6201 29 August 2008. Summary of changes for version 20080829:
6203 1) ACPI CA Core Subsystem:
6205 Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type
6206 Reference. Changes include the elimination of cheating on the Object
6208 for the DdbHandle subtype, addition of a reference class field to
6209 differentiate the various reference types (instead of an AML opcode), and
6211 cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723
6213 Reduce an error to a warning for an incorrect method argument count.
6214 Previously aborted with an error if too few arguments were passed to a
6215 control method via the external ACPICA interface. Now issue a warning
6217 and continue. Handles the case where the method inadvertently declares
6219 many arguments, but does not actually use the extra ones. Applies mainly
6221 the predefined methods. Lin Ming. Linux BZ 11032.
6223 Disallow the evaluation of named object types with no intrinsic value.
6225 AE_TYPE for objects that have no value and therefore evaluation is
6227 Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation
6229 these types were allowed, but an exception would be generated at some
6231 during the evaluation. Now, the error is generated up front.
6233 Fixed a possible memory leak in the AcpiNsGetExternalPathname function
6234 (nsnames.c). Fixes a leak in the error exit path.
6236 Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These
6238 levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and
6240 interfaces. Also added ACPI_DB_EVENTS to correspond with the existing
6243 Removed obsolete and/or unused exception codes from the acexcep.h header.
6244 There is the possibility that certain device drivers may be affected if
6246 use any of these exceptions.
6248 The ACPICA documentation has been added to the public git source tree,
6250 acpica/documents. Included are the ACPICA programmer reference, the iASL
6251 compiler reference, and the changes.txt release logfile.
6253 Example Code and Data Size: These are the sizes for the OS-independent
6254 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6255 debug version of the code includes the debug output trace mechanism and
6257 much larger code and data size.
6260 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
6261 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
6263 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
6264 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
6266 2) iASL Compiler/Disassembler and Tools:
6268 Allow multiple argument counts for the predefined _SCP method. ACPI 3.0
6269 defines _SCP with 3 arguments. Previous versions defined it with only 1
6270 argument. iASL now allows both definitions.
6272 iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for
6274 length subtables when disassembling ACPI tables. Also fixed a couple of
6275 errors where a full 16-bit table type field was not extracted from the
6279 acpisrc: Improve comment counting mechanism for generating source code
6280 statistics. Count first and last lines of multi-line comments as
6282 not comment lines. Handle Linux legal header in addition to standard
6286 ----------------------------------------
6288 29 July 2008. Summary of changes for version 20080729:
6290 1) ACPI CA Core Subsystem:
6292 Fix a possible deadlock in the GPE dispatch. Remove call to
6293 AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will
6295 to acquire the GPE lock but can deadlock since the GPE lock is already
6297 at dispatch time. This code was introduced in version 20060831 as a
6299 to Linux BZ 6881 and has since been removed from Linux.
6301 Add a function to dereference returned reference objects. Examines the
6303 object from a call to AcpiEvaluateObject. Any Index or RefOf references
6305 automatically dereferenced in an attempt to return something useful
6307 reference types cannot be converted into an external ACPI_OBJECT.)
6309 MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105
6311 x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new
6312 subtables for the MADT and one new subtable for the SRAT. Includes
6313 disassembler and AcpiSrc support. Data from the Intel 64 Architecture
6315 Specification, June 2008.
6317 Additional error checking for pathname utilities. Add error check after
6319 calls to AcpiNsGetPathnameLength. Add status return from
6320 AcpiNsBuildExternalPath and check after all calls. Add parameter
6322 to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar.
6324 Return status from the global init function AcpiUtGlobalInitialize. This
6326 used by both the kernel subsystem and the utilities such as iASL
6328 The function could possibly fail when the caches are initialized. Yang
6331 Add a function to decode reference object types to strings. Created for
6332 improved error messages.
6334 Improve object conversion error messages. Better error messages during
6336 conversion from internal to the external ACPI_OBJECT. Used for external
6338 to AcpiEvaluateObject.
6340 Example Code and Data Size: These are the sizes for the OS-independent
6341 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6342 debug version of the code includes the debug output trace mechanism and
6344 much larger code and data size.
6347 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
6348 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
6350 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
6351 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
6353 2) iASL Compiler/Disassembler and Tools:
6355 Debugger: fix a possible hang when evaluating non-methods. Fixes a
6357 introduced in version 20080701. If the object being evaluated (via
6359 command) is not a method, the debugger can hang while trying to obtain
6361 existent parameters.
6363 iASL: relax error for using reserved "_T_x" identifiers. These names can
6364 appear in a disassembled ASL file if they were emitted by the original
6365 compiler. Instead of issuing an error or warning and forcing the user to
6366 manually change these names, issue a remark instead.
6368 iASL: error if named object created in while loop. Emit an error if any
6370 object is created within a While loop. If allowed, this code will
6373 run-time error on the second iteration of the loop when an attempt is
6376 create the same named object twice. ACPICA bugzilla 730.
6378 iASL: Support absolute pathnames for include files. Add support for
6380 pathnames within the Include operator. previously, only relative
6384 iASL: Enforce minimum 1 interrupt in interrupt macro and Resource
6386 The ACPI spec requires one interrupt minimum. BZ 423
6388 iASL: Handle a missing ResourceSource arg, with a present SourceIndex.
6389 Handles the case for the Interrupt Resource Descriptor where
6390 the ResourceSource argument is omitted but ResourceSourceIndex
6391 is present. Now leave room for the Index. BZ 426
6393 iASL: Prevent error message if CondRefOf target does not exist. Fixes
6395 where an error message is emitted if the target does not exist. BZ 516
6397 iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option
6398 (get ACPI tables on Windows). This was apparently broken in version
6401 AcpiXtract: Handle EOF while extracting data. Correctly handle the case
6403 the EOF happens immediately after the last table in the input file. Print
6404 completion message. Previously, no message was displayed in this case.
6406 ----------------------------------------
6407 01 July 2008. Summary of changes for version 20080701:
6409 0) Git source tree / acpica.org
6411 Fixed a problem where a git-clone from http would not transfer the entire
6414 1) ACPI CA Core Subsystem:
6416 Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one
6417 enable bit. Now performs a read-change-write of the enable register
6419 of simply writing out the cached enable mask. This will prevent
6421 enabling of GPEs if a rogue GPE is received during initialization (before
6423 handlers are installed.)
6425 Implemented a copy for dynamically loaded tables. Previously, dynamically
6426 loaded tables were simply mapped - but on some machines this memory is
6427 corrupted after suspend. Now copy the table to a local buffer. For the
6428 OpRegion case, added checksum verify. Use the table length from the table
6429 header, not the region length. For the Buffer case, use the table length
6430 also. Dennis Noordsij, Bob Moore. BZ 10734
6432 Fixed a problem where the same ACPI table could not be dynamically loaded
6434 unloaded more than once. Without this change, a table cannot be loaded
6436 once it has been loaded/unloaded one time. The current mechanism does not
6437 unregister a table upon an unload. During a load, if the same table is
6439 this no longer returns an exception. BZ 722
6441 Fixed a problem where the wrong descriptor length was calculated for the
6442 EndTag descriptor in 64-bit mode. The "minimal" descriptors such as
6444 are calculated as 12 bytes long, but the actual length in the internal
6445 descriptor is 16 because of the round-up to 8 on the 64-bit build.
6447 by Linn Crosetto. BZ 728
6449 Fixed a possible memory leak in the Unload operator. The DdbHandle
6451 by Load() did not have its reference count decremented during unload,
6453 to a memory leak. Lin Ming. BZ 727
6455 Fixed a possible memory leak when deleting thermal/processor objects. Any
6456 associated notify handlers (and objects) were not being deleted. Fiodor
6459 Fixed the ordering of the ASCII names in the global mutex table to match
6461 actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug
6463 Vegard Nossum. BZ 726
6465 Enhanced the AcpiGetObjectInfo interface to return the number of required
6466 arguments if the object is a control method. Added this call to the
6468 so the proper number of default arguments are passed to a method. This
6469 prevents a warning when executing methods from AcpiExec.
6471 Added a check for an invalid handle in AcpiGetObjectInfo. Return
6472 AE_BAD_PARAMETER if input handle is invalid. BZ 474
6474 Fixed an extraneous warning from exconfig.c on the 64-bit build.
6476 Example Code and Data Size: These are the sizes for the OS-independent
6477 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6478 debug version of the code includes the debug output trace mechanism and
6480 much larger code and data size.
6483 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
6484 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
6486 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
6487 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
6489 2) iASL Compiler/Disassembler and Tools:
6491 iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both
6492 resource descriptor names.
6494 iASL: Detect invalid ASCII characters in input (windows version). Removed
6496 "-CF" flag from the flex compile, enables correct detection of non-ASCII
6497 characters in the input. BZ 441
6499 iASL: Eliminate warning when result of LoadTable is not used. Eliminate
6501 "result of operation not used" warning when the DDB handle returned from
6502 LoadTable is not used. The warning is not needed. BZ 590
6504 AcpiExec: Add support for dynamic table load/unload. Now calls _CFG
6507 pass address of table to the AML. Added option to disable OpRegion
6509 to allow creation of an OpRegion with a real address that was passed to
6511 All of this allows testing of the Load and Unload operators from
6514 Debugger: update tables command for unloaded tables. Handle unloaded
6516 and use the standard table header output routine.
6518 ----------------------------------------
6519 09 June 2008. Summary of changes for version 20080609:
6521 1) ACPI CA Core Subsystem:
6523 Implemented a workaround for reversed _PRT entries. A significant number
6525 BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This
6526 change dynamically detects and repairs this problem. Provides
6528 with MS ACPI. BZ 6859
6530 Simplified the internal ACPI hardware interfaces to eliminate the locking
6531 flag parameter from Register Read/Write. Added a new external interface,
6532 AcpiGetRegisterUnlocked.
6534 Fixed a problem where the invocation of a GPE control method could hang.
6536 was a regression introduced in 20080514. The new method argument count
6537 validation mechanism can enter an infinite loop when a GPE method is
6538 dispatched. Problem fixed by removing the obsolete code that passed GPE
6540 information to the notify handler via the control method parameter
6543 Fixed a problem where the _SST execution status was incorrectly returned
6545 the caller of AcpiEnterSleepStatePrep. This was a regression introduced
6547 20080514. _SST is optional and a NOT_FOUND exception should never be
6550 Fixed a problem where a deleted object could be accessed from within the
6552 parser. This was a regression introduced in version 20080123 as a fix for
6554 Unload operator. Lin Ming. BZ 10669
6556 Cleaned up the debug operand dump mechanism. Eliminated unnecessary
6558 and eliminated the use of a negative index in a loop. Operands are now
6559 displayed in the correct order, not backwards. This also fixes a
6561 introduced in 20080514 on 64-bit systems where the elimination of
6562 ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ
6565 Fixed a possible memory leak in EvPciConfigRegionSetup where the error
6567 path did not delete a locally allocated structure.
6569 Updated definitions for the DMAR and SRAT tables to synchronize with the
6570 current specifications. Includes disassembler support.
6572 Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect
6573 loop termination value was used. Loop terminated on iteration early,
6575 one mutex. Linn Crosetto
6577 Example Code and Data Size: These are the sizes for the OS-independent
6578 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6579 debug version of the code includes the debug output trace mechanism and
6581 much larger code and data size.
6584 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
6585 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
6587 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
6588 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
6590 2) iASL Compiler/Disassembler and Tools:
6592 Disassembler: Implemented support for EisaId() within _CID objects. Now
6593 disassemble integer _CID objects back to EisaId invocations, including
6594 multiple integers within _CID packages. Includes single-step support for
6597 Disassembler: Added support for DMAR and SRAT table definition changes.
6599 ----------------------------------------
6600 14 May 2008. Summary of changes for version 20080514:
6602 1) ACPI CA Core Subsystem:
6604 Fixed a problem where GPEs were enabled too early during the ACPICA
6605 initialization. This could lead to "handler not installed" errors on some
6606 machines. Moved GPE enable until after _REG/_STA/_INI methods are run.
6608 ensures that all operation regions and devices throughout the namespace
6610 been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916.
6612 Implemented a change to the enter sleep code. Moved execution of the _GTS
6613 method to just before setting sleep enable bit. The execution was moved
6615 AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed
6616 immediately before the SLP_EN bit is set, as per the ACPI specification.
6619 Implemented a fix to disable unknown GPEs (2nd version). Now always
6621 the GPE, even if ACPICA thinks that that it is already disabled. It is
6622 possible that the AML or some other code has enabled the GPE unbeknownst
6626 Fixed a problem with the Field operator where zero-length fields would
6628 an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length
6630 field declarations in Field(), BankField(), and IndexField(). BZ 10606.
6632 Implemented a fix for the Load operator, now load the table at the
6634 root. This reverts a change introduced in version 20071019. The table is
6636 loaded at the namespace root even though this goes against the ACPI
6637 specification. This provides compatibility with other ACPI
6639 The ACPI specification will be updated to reflect this in ACPI 4.0. Lin
6642 Fixed a problem where ACPICA would not Load() tables with unusual
6644 Now ignore ACPI table signature for Load() operator. Only "SSDT" is
6645 acceptable to the ACPI spec, but tables are seen with OEMx and null sigs.
6646 Therefore, signature validation is worthless. Apparently MS ACPI accepts
6648 signatures, ACPICA must be compatible. BZ 10454.
6650 Fixed a possible negative array index in AcpiUtValidateException. Added
6652 fields to the exception string arrays to eliminate a -1 subtraction on
6656 Updated the debug tracking macros to reduce overall code and data size.
6657 Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings
6658 instead of pointers to static strings. Jan Beulich and Bob Moore.
6660 Implemented argument count checking in control method invocation via
6661 AcpiEvaluateObject. Now emit an error if too few arguments, warning if
6663 many. This applies only to extern programmatic control method execution,
6665 method-to-method calls within the AML. Lin Ming.
6667 Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is
6669 longer needed, especially with the removal of 16-bit support. It was
6671 mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64
6674 32/64-bit platforms is required.
6676 Added the C const qualifier for appropriate string constants -- mostly
6677 MODULE_NAME and printf format strings. Jan Beulich.
6679 Example Code and Data Size: These are the sizes for the OS-independent
6680 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6681 debug version of the code includes the debug output trace mechanism and
6683 much larger code and data size.
6686 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
6687 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
6689 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
6690 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
6692 2) iASL Compiler/Disassembler and Tools:
6694 Implemented ACPI table revision ID validation in the disassembler. Zero
6696 always invalid. For DSDTs, the ID controls the interpreter integer width.
6698 means 32-bit and this is unusual. 2 or greater is 64-bit.
6700 ----------------------------------------
6701 21 March 2008. Summary of changes for version 20080321:
6703 1) ACPI CA Core Subsystem:
6705 Implemented an additional change to the GPE support in order to suppress
6706 spurious or stray GPEs. The AcpiEvDisableGpe function will now
6708 disable incoming GPEs that are neither enabled nor disabled -- meaning
6710 the GPE is unknown to the system. This should prevent future interrupt
6712 from that GPE. BZ 6217 (Zhang Rui)
6714 Fixed a problem where NULL package elements were not returned to the
6715 AcpiEvaluateObject interface correctly. The element was simply ignored
6716 instead of returning a NULL ACPI_OBJECT package element, potentially
6718 a buffer overflow and/or confusing the caller who expected a fixed number
6720 elements. BZ 10132 (Lin Ming, Bob Moore)
6722 Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word,
6724 Qword), Field, BankField, and IndexField operators when invoked from
6726 an executing control method. In this case, these operators created
6728 nodes that were incorrectly left marked as permanent nodes instead of
6729 temporary nodes. This could cause a problem if there is race condition
6730 between an exiting control method and a running namespace walk. (Reported
6734 Fixed a problem where the CreateField and CreateXXXField operators would
6735 incorrectly allow duplicate names (the name of the field) with no
6739 Implemented several changes for Notify handling. Added support for new
6741 values (ACPI 2.0+) and improved the Notify debug output. Notify on
6742 PowerResource objects is no longer allowed, as per the ACPI
6744 (Bob Moore, Zhang Rui)
6746 All Reference Objects returned via the AcpiEvaluateObject interface are
6748 marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved
6750 NULL objects - either NULL package elements or unresolved named
6753 Fixed a problem where an extraneous debug message was produced for
6755 objects (when debugging enabled). The message "Package List length larger
6756 than NumElements count" is now produced in the correct case, and is now
6758 error message rather than a debug message. Added a debug message for the
6759 opposite case, where NumElements is larger than the Package List (the
6761 will be padded out with NULL elements as per the ACPI spec.)
6763 Implemented several improvements for the output of the ASL "Debug" object
6765 clarify and keep all data for a given object on one output line.
6767 Fixed two size calculation issues with the variable-length Start
6769 resource descriptor.
6771 Example Code and Data Size: These are the sizes for the OS-independent
6772 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6773 debug version of the code includes the debug output trace mechanism and
6775 a much larger code and data size.
6778 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
6779 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
6781 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
6782 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
6784 2) iASL Compiler/Disassembler and Tools:
6786 Fixed a problem with the use of the Switch operator where execution of
6788 containing method by multiple concurrent threads could cause an
6789 AE_ALREADY_EXISTS exception. This is caused by the fact that there is no
6790 actual Switch opcode, it must be simulated with local named temporary
6791 variables and if/else pairs. The solution chosen was to mark any method
6793 uses Switch as Serialized, thus preventing multiple thread entries. BZ
6796 ----------------------------------------
6797 13 February 2008. Summary of changes for version 20080213:
6799 1) ACPI CA Core Subsystem:
6801 Implemented another MS compatibility design change for GPE/Notify
6803 GPEs are now cleared/enabled asynchronously to allow all pending notifies
6805 complete first. It is expected that the OSL will queue the enable request
6806 behind all pending notify requests (may require changes to the local host
6808 in AcpiOsExecute). Alexey Starikovskiy.
6810 Fixed a problem where buffer and package objects passed as arguments to a
6811 control method via the external AcpiEvaluateObject interface could cause
6813 AE_AML_INTERNAL exception depending on the order and type of operators
6814 executed by the target control method.
6816 Fixed a problem where resource descriptor size optimization could cause a
6817 problem when a _CRS resource template is passed to a _SRS method. The
6819 resource template must use the same descriptors (with the same size) as
6820 returned from _CRS. This change affects the following resource
6822 IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ
6825 Fixed a problem where a CopyObject to RegionField, BankField, and
6827 objects did not perform an implicit conversion as it should. These types
6829 retain their initial type permanently as per the ACPI specification.
6831 a CopyObject to all other object types should not perform an implicit
6832 conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388
6834 Fixed a problem with the AcpiGetDevices interface where the mechanism to
6835 match device CIDs did not examine the entire list of available CIDs, but
6836 instead aborted on the first non-matching CID. Andrew Patterson.
6838 Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro
6840 inadvertently changed to return a 16-bit value instead of a 32-bit value,
6841 truncating the upper dword of a 64-bit value. This macro is only used to
6842 display debug output, so no incorrect calculations were made. Also,
6843 reimplemented the macro so that a 64-bit shift is not performed by
6844 inefficient compilers.
6846 Added missing va_end statements that should correspond with each va_start
6849 Example Code and Data Size: These are the sizes for the OS-independent
6850 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6851 debug version of the code includes the debug output trace mechanism and
6853 a much larger code and data size.
6856 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
6857 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
6859 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
6860 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
6862 2) iASL Compiler/Disassembler and Tools:
6864 Implemented full disassembler support for the following new ACPI tables:
6865 BERT, EINJ, and ERST. Implemented partial disassembler support for the
6866 complicated HEST table. These tables support the Windows Hardware Error
6867 Architecture (WHEA).
6869 ----------------------------------------
6870 23 January 2008. Summary of changes for version 20080123:
6872 1) ACPI CA Core Subsystem:
6874 Added the 2008 copyright to all module headers and signons. This affects
6875 virtually every file in the ACPICA core subsystem, the iASL compiler, and
6876 the tools/utilities.
6878 Fixed a problem with the SizeOf operator when used with Package and
6880 objects. These objects have deferred execution for some arguments, and
6882 execution is now completed before the SizeOf is executed. This problem
6884 unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore)
6888 Implemented an enhancement to the interpreter "slack mode". In the
6891 an explicit return or an implicitly returned object from the last
6893 opcode, a control method will now implicitly return an integer of value 0
6895 Microsoft compatibility. (Lin Ming) BZ 392
6897 Fixed a problem with the Load operator where an exception was not
6900 the case where the table is already loaded. (Lin Ming) BZ 463
6902 Implemented support for the use of DDBHandles as an Indexed Reference, as
6904 the ACPI spec. (Lin Ming) BZ 486
6906 Implemented support for UserTerm (Method invocation) for the Unload
6908 as per the ACPI spec. (Lin Ming) BZ 580
6910 Fixed a problem with the LoadTable operator where the OemId and
6912 input strings could cause unexpected failures if they were shorter than
6914 maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576
6916 Implemented support for UserTerm (Method invocation) for the Unload
6918 as per the ACPI spec. (Lin Ming) BZ 580
6920 Implemented header file support for new ACPI tables - BERT, ERST, EINJ,
6922 IBFT, UEFI, WDAT. Disassembler support is forthcoming.
6924 Example Code and Data Size: These are the sizes for the OS-independent
6925 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6926 debug version of the code includes the debug output trace mechanism and
6928 a much larger code and data size.
6931 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
6932 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
6934 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
6935 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
6937 2) iASL Compiler/Disassembler and Tools:
6939 Implemented support in the disassembler for checksum validation on
6941 binary DSDTs and SSDTs. If incorrect, a message is displayed within the
6943 header dump at the start of the disassembly.
6945 Implemented additional debugging information in the namespace listing
6947 created during compilation. In addition to the namespace hierarchy, the
6949 pathname to each namespace object is displayed.
6951 Fixed a problem with the disassembler where invalid ACPI tables could
6953 faults or infinite loops.
6955 Fixed an unexpected parse error when using the optional "parameter types"
6956 list in a control method declaration. (Lin Ming) BZ 397
6958 Fixed a problem where two External declarations with the same name did
6960 cause an error (Lin Ming) BZ 509
6962 Implemented support for full TermArgs (adding Argx, Localx and method
6963 invocation) for the ParameterData parameter to the LoadTable operator.
6967 ----------------------------------------
6968 19 December 2007. Summary of changes for version 20071219:
6970 1) ACPI CA Core Subsystem:
6972 Implemented full support for deferred execution for the TermArg string
6973 arguments for DataTableRegion. This enables forward references and full
6974 operand resolution for the three string arguments. Similar to
6976 deferred argument execution.) Lin Ming. BZ 430
6978 Implemented full argument resolution support for the BankValue argument
6980 BankField. Previously, only constants were supported, now any TermArg may
6982 used. Lin Ming BZ 387, 393
6984 Fixed a problem with AcpiGetDevices where the search of a branch of the
6985 device tree could be terminated prematurely. In accordance with the ACPI
6986 specification, the search down the current branch is terminated if a
6988 is both not present and not functional (instead of just not present.)
6992 Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly
6994 the underlying AML code changed the GPE enable registers. Now, any
6996 incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately
6998 instead of simply ignored. Rui Zhang.
7000 Fixed a problem with Index Fields where the Index register was
7002 limited to a maximum of 32 bits. Now any size may be used.
7004 Fixed a couple memory leaks associated with "implicit return" objects
7006 the AML Interpreter slack mode is enabled. Lin Ming BZ 349
7008 Example Code and Data Size: These are the sizes for the OS-independent
7009 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7010 debug version of the code includes the debug output trace mechanism and
7012 a much larger code and data size.
7015 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
7016 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
7018 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
7019 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
7021 ----------------------------------------
7022 14 November 2007. Summary of changes for version 20071114:
7024 1) ACPI CA Core Subsystem:
7026 Implemented event counters for each of the Fixed Events, the ACPI SCI
7027 (interrupt) itself, and control methods executed. Named
7028 AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively.
7030 should be useful for debugging and statistics.
7032 Implemented a new external interface, AcpiGetStatistics, to retrieve the
7033 contents of the various event counters. Returns the current values for
7034 AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and
7035 AcpiMethodCount. The interface can be expanded in the future if new
7037 are added. Device drivers should use this interface rather than access
7041 Fixed a problem with the FromBCD and ToBCD operators. With some
7043 the ShortDivide function worked incorrectly, causing problems with the
7045 functions with large input values. A truncation from 64-bit to 32-bit
7046 inadvertently occurred. Internal BZ 435. Lin Ming
7048 Fixed a problem with Index references passed as method arguments.
7050 passed as arguments to control methods were dereferenced immediately
7052 control was passed to the called method). The references are now
7054 passed directly to the called method. BZ 5389. Lin Ming
7056 Fixed a problem with CopyObject used in conjunction with the Index
7058 The reference was incorrectly dereferenced before the copy. The reference
7060 now correctly copied. BZ 5391. Lin Ming
7062 Fixed a problem with Control Method references within Package objects.
7064 references are now correctly generated. This completes the package
7065 construction overhaul that began in version 20071019.
7067 Example Code and Data Size: These are the sizes for the OS-independent
7068 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7069 debug version of the code includes the debug output trace mechanism and
7071 a much larger code and data size.
7074 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
7075 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
7077 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
7078 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
7081 2) iASL Compiler/Disassembler and Tools:
7083 The AcpiExec utility now installs handlers for all of the predefined
7084 Operation Region types. New types supported are: PCI_Config, CMOS, and
7087 Fixed a problem with the 64-bit version of AcpiExec where the extended
7089 bit) address fields for the DSDT and FACS within the FADT were not being
7090 used, causing truncation of the upper 32-bits of these addresses. Lin
7094 ----------------------------------------
7095 19 October 2007. Summary of changes for version 20071019:
7097 1) ACPI CA Core Subsystem:
7099 Fixed a problem with the Alias operator when the target of the alias is a
7100 named ASL operator that opens a new scope -- Scope, Device,
7102 Processor, and ThermalZone. In these cases, any children of the original
7103 operator could not be accessed via the alias, potentially causing
7105 AE_NOT_FOUND exceptions. (BZ 9067)
7107 Fixed a problem with the Package operator where all named references were
7108 created as object references and left otherwise unresolved. According to
7110 ACPI specification, a Package can only contain Data Objects or references
7112 control methods. The implication is that named references to Data Objects
7113 (Integer, Buffer, String, Package, BufferField, Field) should be resolved
7114 immediately upon package creation. This is the approach taken with this
7115 change. References to all other named objects (Methods, Devices, Scopes,
7116 etc.) are all now properly created as reference objects. (BZ 5328)
7118 Reverted a change to Notify handling that was introduced in version
7119 20070508. This version changed the Notify handling from asynchronous to
7120 fully synchronous (Device driver Notify handling with respect to the
7122 ASL operator). It was found that this change caused more problems than it
7123 solved and was removed by most users.
7125 Fixed a problem with the Increment and Decrement operators where the type
7127 the target object could be unexpectedly and incorrectly changed. (BZ 353)
7130 Fixed a problem with the Load and LoadTable operators where the table
7131 location within the namespace was ignored. Instead, the table was always
7132 loaded into the root or current scope. Lin Ming.
7134 Fixed a problem with the Load operator when loading a table from a buffer
7135 object. The input buffer was prematurely zeroed and/or deleted. (BZ 577)
7137 Fixed a problem with the Debug object where a store of a DdbHandle
7139 object to the Debug object could cause a fault.
7141 Added a table checksum verification for the Load operator, in the case
7143 the load is from a buffer. (BZ 578).
7145 Implemented additional parameter validation for the LoadTable operator.
7147 length of the input strings SignatureString, OemIdString, and OemTableId
7149 now checked for maximum lengths. (BZ 582) Lin Ming.
7151 Example Code and Data Size: These are the sizes for the OS-independent
7152 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7153 debug version of the code includes the debug output trace mechanism and
7155 a much larger code and data size.
7158 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
7159 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
7161 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
7162 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
7165 2) iASL Compiler/Disassembler:
7167 Fixed a problem where if a single file was specified and the file did not
7168 exist, no error message was emitted. (Introduced with wildcard support in
7171 ----------------------------------------
7172 19 September 2007. Summary of changes for version 20070919:
7174 1) ACPI CA Core Subsystem:
7176 Designed and implemented new external interfaces to install and remove
7177 handlers for ACPI table-related events. Current events that are defined
7179 LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as
7180 they are dynamically loaded and unloaded. See AcpiInstallTableHandler and
7181 AcpiRemoveTableHandler. (Lin Ming and Bob Moore)
7183 Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag
7184 (acpi_serialized option on Linux) could cause some systems to hang during
7185 initialization. (Bob Moore) BZ 8171
7187 Fixed a problem where objects of certain types (Device, ThermalZone,
7188 Processor, PowerResource) can be not found if they are declared and
7189 referenced from within the same control method (Lin Ming) BZ 341
7191 Example Code and Data Size: These are the sizes for the OS-independent
7192 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7193 debug version of the code includes the debug output trace mechanism and
7195 a much larger code and data size.
7198 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
7199 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
7201 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
7202 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
7205 2) iASL Compiler/Disassembler:
7207 Implemented support to allow multiple files to be compiled/disassembled
7210 single invocation. This includes command line wildcard support for both
7212 Windows and Unix versions of the compiler. This feature simplifies the
7213 disassembly and compilation of multiple ACPI tables in a single
7216 ----------------------------------------
7217 08 May 2007. Summary of changes for version 20070508:
7219 1) ACPI CA Core Subsystem:
7221 Implemented a Microsoft compatibility design change for the handling of
7223 Notify AML operator. Previously, notify handlers were dispatched and
7224 executed completely asynchronously in a deferred thread. The new design
7225 still executes the notify handlers in a different thread, but the
7227 thread that executed the Notify() now waits at a synchronization point
7229 the notify handler to complete. Some machines depend on a synchronous
7231 operator in order to operate correctly.
7233 Implemented support to allow Package objects to be passed as method
7234 arguments to the external AcpiEvaluateObject interface. Previously, this
7235 would return the AE_NOT_IMPLEMENTED exception. This feature had not been
7236 implemented since there were no reserved control methods that required it
7239 Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs
7241 contained invalid non-zero values in reserved fields could cause later
7242 failures because these fields have meaning in later revisions of the
7244 For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The
7246 are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.)
7248 Fixed a problem where the Global Lock handle was not properly updated if
7250 thread that acquired the Global Lock via executing AML code then
7252 to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by
7256 Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list
7257 could be corrupted if the interrupt being removed was at the head of the
7258 list. Reported by Linn Crosetto.
7260 Example Code and Data Size: These are the sizes for the OS-independent
7261 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7262 debug version of the code includes the debug output trace mechanism and
7264 a much larger code and data size.
7267 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
7268 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
7270 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
7271 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
7273 ----------------------------------------
7274 20 March 2007. Summary of changes for version 20070320:
7276 1) ACPI CA Core Subsystem:
7278 Implemented a change to the order of interpretation and evaluation of AML
7279 operand objects within the AML interpreter. The interpreter now evaluates
7280 operands in the order that they appear in the AML stream (and the
7281 corresponding ASL code), instead of in the reverse order (after the
7283 operand list has been parsed). The previous behavior caused several
7285 incompatibilities with the Microsoft AML interpreter as well as being
7286 somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov.
7288 Implemented a change to the ACPI Global Lock support. All interfaces to
7290 global lock now allow the same thread to acquire the lock multiple times.
7291 This affects the AcpiAcquireGlobalLock external interface to the global
7293 as well as the internal use of the global lock to support AML fields -- a
7294 control method that is holding the global lock can now simultaneously
7296 AML fields that require global lock protection. Previously, in both
7298 this would have resulted in an AE_ALREADY_ACQUIRED exception. The change
7300 AcpiAcquireGlobalLock is of special interest to drivers for the Embedded
7301 Controller. There is no change to the behavior of the AML Acquire
7303 as this can already be used to acquire a mutex multiple times by the same
7304 thread. BZ 8066. With assistance from Alexey Starikovskiy.
7306 Fixed a problem where invalid objects could be referenced in the AML
7307 Interpreter after error conditions. During operand evaluation, ensure
7309 the internal "Return Object" field is cleared on error and only valid
7310 pointers are stored there. Caused occasional access to deleted objects
7312 resulted in "large reference count" warning messages. Valery Podrezov.
7314 Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur
7316 deeply nested control method invocations. BZ 7873, local BZ 487. Valery
7319 Fixed an internal problem with the handling of result objects on the
7320 interpreter result stack. BZ 7872. Valery Podrezov.
7322 Removed obsolete code that handled the case where AML_NAME_OP is the
7324 of a reference (Reference.Opcode). This code was no longer necessary. BZ
7325 7874. Valery Podrezov.
7327 Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This
7330 remnant from the previously discontinued 16-bit support.
7332 Example Code and Data Size: These are the sizes for the OS-independent
7333 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7334 debug version of the code includes the debug output trace mechanism and
7336 a much larger code and data size.
7339 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
7340 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
7342 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
7343 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
7345 ----------------------------------------
7346 26 January 2007. Summary of changes for version 20070126:
7348 1) ACPI CA Core Subsystem:
7350 Added the 2007 copyright to all module headers and signons. This affects
7351 virtually every file in the ACPICA core subsystem, the iASL compiler, and
7354 Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable
7355 during a table load. A bad pointer was passed in the case where the DSDT
7357 overridden, causing a fault in this case.
7359 Example Code and Data Size: These are the sizes for the OS-independent
7360 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7361 debug version of the code includes the debug output trace mechanism and
7363 a much larger code and data size.
7366 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
7367 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
7369 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
7370 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
7372 ----------------------------------------
7373 15 December 2006. Summary of changes for version 20061215:
7375 1) ACPI CA Core Subsystem:
7377 Support for 16-bit ACPICA has been completely removed since it is no
7379 necessary and it clutters the code. All 16-bit macros, types, and
7380 conditional compiles have been removed, cleaning up and simplifying the
7382 across the entire subsystem. DOS support is no longer needed since the
7383 bootable Linux firmware kit is now available.
7385 The handler for the Global Lock is now removed during AcpiTerminate to
7386 enable a clean subsystem restart, via the implementation of the
7387 AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz,
7390 Implemented enhancements to the multithreading support within the
7392 to enable improved multithreading debugging and evaluation of the
7396 Debugger: Enhanced the Statistics/Memory command to emit the total
7398 memory used during the execution, as well as the maximum memory consumed
7400 each of the various object types. (Valery Podrezov)
7402 Example Code and Data Size: These are the sizes for the OS-independent
7403 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7404 debug version of the code includes the debug output trace mechanism and
7406 a much larger code and data size.
7409 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
7410 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
7412 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
7413 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
7416 2) iASL Compiler/Disassembler and Tools:
7418 AcpiExec: Implemented a new option (-m) to display full memory use
7419 statistics upon subsystem/program termination. (Valery Podrezov)
7421 ----------------------------------------
7422 09 November 2006. Summary of changes for version 20061109:
7424 1) ACPI CA Core Subsystem:
7426 Optimized the Load ASL operator in the case where the source operand is
7428 operation region. Simply map the operation region memory, instead of
7429 performing a bytewise read. (Region must be of type SystemMemory, see
7432 Fixed the Load ASL operator for the case where the source operand is a
7433 region field. A buffer object is also allowed as the source operand. BZ
7436 Fixed a problem where the Load ASL operator allowed the source operand to
7438 an operation region of any type. It is now restricted to regions of type
7439 SystemMemory, as per the ACPI specification. BZ 481
7441 Additional cleanup and optimizations for the new Table Manager code.
7443 AcpiEnable will now fail if all of the required ACPI tables are not
7445 (FADT, FACS, DSDT). BZ 477
7447 Added #pragma pack(8/4) to acobject.h to ensure that the structures in
7449 header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been
7450 manually optimized to be aligned and will not work if it is byte-packed.
7452 Example Code and Data Size: These are the sizes for the OS-independent
7453 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7454 debug version of the code includes the debug output trace mechanism and
7456 a much larger code and data size.
7459 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
7460 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
7462 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
7463 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
7466 2) iASL Compiler/Disassembler and Tools:
7468 Fixed a problem where the presence of the _OSI predefined control method
7469 within complex expressions could cause an internal compiler error.
7471 AcpiExec: Implemented full region support for multiple address spaces.
7472 SpaceId is now part of the REGION object. BZ 429
7474 ----------------------------------------
7475 11 October 2006. Summary of changes for version 20061011:
7477 1) ACPI CA Core Subsystem:
7479 Completed an AML interpreter performance enhancement for control method
7480 execution. Previously a 2-pass parse/execution, control methods are now
7481 completely parsed and executed in a single pass. This improves overall
7482 interpreter performance by ~25%, reduces code size, and reduces CPU stack
7483 use. (Valery Podrezov + interpreter changes in version 20051202 that
7484 eliminated namespace loading during the pass one parse.)
7486 Implemented _CID support for PCI Root Bridge detection. If the _HID does
7488 match the predefined PCI Root Bridge IDs, the _CID list (if present) is
7490 obtained and also checked for an ID match.
7492 Implemented additional support for the PCI _ADR execution: upsearch until
7494 device scope is found before executing _ADR. This allows PCI_Config
7495 operation regions to be declared locally within control methods
7499 Fixed a problem with a possible race condition between threads executing
7500 AcpiWalkNamespace and the AML interpreter. This condition was removed by
7501 modifying AcpiWalkNamespace to (by default) ignore all temporary
7503 entries created during any concurrent control method execution. An
7504 additional namespace race condition is known to exist between
7505 AcpiWalkNamespace and the Load/Unload ASL operators and is still under
7508 Restructured the AML ParseLoop function, breaking it into several
7509 subfunctions in order to reduce CPU stack use and improve
7513 AcpiGetHandle: Fix for parameter validation to detect invalid
7515 of prefix handle and pathname. BZ 478
7517 Example Code and Data Size: These are the sizes for the OS-independent
7518 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7519 debug version of the code includes the debug output trace mechanism and
7521 a much larger code and data size.
7524 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
7525 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
7527 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
7528 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
7530 2) iASL Compiler/Disassembler and Tools:
7532 Ported the -g option (get local ACPI tables) to the new ACPICA Table
7534 to restore original behavior.
7536 ----------------------------------------
7537 27 September 2006. Summary of changes for version 20060927:
7539 1) ACPI CA Core Subsystem:
7541 Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister.
7542 These functions now use a spinlock for mutual exclusion and the interrupt
7543 level indication flag is not needed.
7545 Fixed a problem with the Global Lock where the lock could appear to be
7546 obtained before it is actually obtained. The global lock semaphore was
7547 inadvertently created with one unit instead of zero units. (BZ 464)
7551 Fixed a possible memory leak and fault in AcpiExResolveObjectToValue
7553 a read from a buffer or region field. (BZ 458) Fiodor Suietov.
7555 Example Code and Data Size: These are the sizes for the OS-independent
7556 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7557 debug version of the code includes the debug output trace mechanism and
7559 a much larger code and data size.
7562 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
7563 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
7565 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
7566 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
7569 2) iASL Compiler/Disassembler and Tools:
7571 Fixed a compilation problem with the pre-defined Resource Descriptor
7573 names where an "object does not exist" error could be incorrectly
7575 if the parent ResourceTemplate pathname places the template within a
7576 different namespace scope than the current scope. (BZ 7212)
7578 Fixed a problem where the compiler could hang after syntax errors
7580 in an ElseIf construct. (BZ 453)
7582 Fixed a problem with the AmlFilename parameter to the DefinitionBlock()
7583 operator. An incorrect output filename was produced when this parameter
7585 a null string (""). Now, the original input filename is used as the AML
7586 output filename, with an ".aml" extension.
7588 Implemented a generic batch command mode for the AcpiExec utility
7590 any AML debugger command) (Valery Podrezov).
7592 ----------------------------------------
7593 12 September 2006. Summary of changes for version 20060912:
7595 1) ACPI CA Core Subsystem:
7597 Enhanced the implementation of the "serialized mode" of the interpreter
7598 (enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is
7599 specified, instead of creating a serialization semaphore per control
7601 the interpreter lock is simply no longer released before a blocking
7602 operation during control method execution. This effectively makes the AML
7603 Interpreter single-threaded. The overhead of a semaphore per-method is
7606 Fixed a regression where an error was no longer emitted if a control
7608 attempts to create 2 objects of the same name. This once again returns
7609 AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism
7611 will dynamically serialize the control method to possible prevent future
7614 Integrated a fix for a problem with PCI Express HID detection in the PCI
7615 Config Space setup procedure. (BZ 7145)
7617 Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the
7618 AcpiHwInitialize function - the FADT registers are now validated when the
7621 Added two new warnings during FADT verification - 1) if the FADT is
7623 than the largest known FADT version, and 2) if there is a mismatch
7626 32-bit block address and the 64-bit X counterpart (when both are non-
7629 Example Code and Data Size: These are the sizes for the OS-independent
7630 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7631 debug version of the code includes the debug output trace mechanism and
7633 a much larger code and data size.
7636 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
7637 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
7639 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
7640 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
7643 2) iASL Compiler/Disassembler and Tools:
7645 Fixed a problem with the implementation of the Switch() operator where
7647 temporary variable was declared too close to the actual Switch, instead
7649 at method level. This could cause a problem if the Switch() operator is
7650 within a while loop, causing an error on the second iteration. (BZ 460)
7652 Disassembler - fix for error emitted for unknown type for target of scope
7653 operator. Now, ignore it and continue.
7655 Disassembly of an FADT now verifies the input FADT and reports any errors
7656 found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs.
7658 Disassembly of raw data buffers with byte initialization data now
7660 each output line with the current buffer offset.
7662 Disassembly of ASF! table now includes all variable-length data fields at
7663 the end of some of the subtables.
7665 The disassembler now emits a comment if a buffer appears to be a
7666 ResourceTemplate, but cannot be disassembled as such because the EndTag
7668 not appear at the very end of the buffer.
7670 AcpiExec - Added the "-t" command line option to enable the serialized
7672 of the AML interpreter.
7674 ----------------------------------------
7675 31 August 2006. Summary of changes for version 20060831:
7677 1) ACPI CA Core Subsystem:
7679 Miscellaneous fixes for the Table Manager:
7680 - Correctly initialize internal common FADT for all 64-bit "X" fields
7681 - Fixed a couple table mapping issues during table load
7682 - Fixed a couple alignment issues for IA64
7683 - Initialize input array to zero in AcpiInitializeTables
7684 - Additional parameter validation for AcpiGetTable, AcpiGetTableHeader,
7687 Change for GPE support: when a "wake" GPE is received, all wake GPEs are
7689 immediately disabled to prevent the waking GPE from firing again and to
7690 prevent other wake GPEs from interrupting the wake process.
7692 Added the AcpiGpeCount global that tracks the number of processed GPEs,
7694 be used for debugging systems with a large number of ACPI interrupts.
7696 Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in
7697 both the ACPICA headers and the disassembler.
7699 Example Code and Data Size: These are the sizes for the OS-independent
7700 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7701 debug version of the code includes the debug output trace mechanism and
7703 a much larger code and data size.
7706 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
7707 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
7709 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
7710 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
7713 2) iASL Compiler/Disassembler and Tools:
7715 Disassembler support for the DMAR ACPI table.
7717 ----------------------------------------
7718 23 August 2006. Summary of changes for version 20060823:
7720 1) ACPI CA Core Subsystem:
7722 The Table Manager component has been completely redesigned and
7723 reimplemented. The new design is much simpler, and reduces the overall
7725 and data size of the kernel-resident ACPICA by approximately 5%. Also, it
7727 now possible to obtain the ACPI tables very early during kernel
7728 initialization, even before dynamic memory management is initialized.
7729 (Alexey Starikovskiy, Fiodor Suietov, Bob Moore)
7731 Obsolete ACPICA interfaces:
7733 - AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel
7736 - AcpiLoadTable: Not needed.
7737 - AcpiUnloadTable: Not needed.
7739 New ACPICA interfaces:
7741 - AcpiInitializeTables: Must be called before the table manager can be
7743 - AcpiReallocateRootTable: Used to transfer the root table to dynamically
7744 allocated memory after it becomes available.
7745 - AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI
7749 Other ACPICA changes:
7751 - AcpiGetTableHeader returns the actual mapped table header, not a copy.
7753 AcpiOsUnmapMemory to free this mapping.
7754 - AcpiGetTable returns the actual mapped table. The mapping is managed
7755 internally and must not be deleted by the caller. Use of this interface
7756 causes no additional dynamic memory allocation.
7757 - AcpiFindRootPointer: Support for physical addressing has been
7759 it appeared to be unused.
7760 - The interface to AcpiOsMapMemory has changed to be consistent with the
7761 other allocation interfaces.
7762 - The interface to AcpiOsGetRootPointer has changed to eliminate
7765 - ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on
7767 bit platforms. Was previously 64 bits on all platforms.
7768 - The interface to the ACPI Global Lock acquire/release macros have
7770 slightly since ACPICA no longer keeps a local copy of the FACS with a
7771 constructed pointer to the actual global lock.
7773 Porting to the new table manager:
7775 - AcpiInitializeTables: Must be called once, and can be called anytime
7776 during the OS initialization process. It allows the host to specify an
7778 of memory to be used to store the internal version of the RSDT/XSDT (root
7779 table). This allows the host to access ACPI tables before memory
7781 is initialized and running.
7782 - AcpiReallocateRootTable: Can be called after memory management is
7784 to copy the root table to a dynamically allocated array, freeing up the
7785 scratch memory specified in the call to AcpiInitializeTables.
7786 - AcpiSubsystemInitialize: This existing interface is independent of the
7787 Table Manager, and does not have to be called before the Table Manager
7789 be used, it only must be called before the rest of ACPICA can be used.
7790 - ACPI Tables: Some changes have been made to the names and structure of
7792 actbl.h and actbl1.h header files and may require changes to existing
7794 For example, bitfields have been completely removed because of their lack
7796 portability across C compilers.
7797 - Update interfaces to the Global Lock acquire/release macros if local
7798 versions are used. (see acwin.h)
7800 Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c
7804 Example Code and Data Size: These are the sizes for the OS-independent
7805 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7806 debug version of the code includes the debug output trace mechanism and
7808 a much larger code and data size.
7811 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
7812 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
7814 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
7815 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
7818 2) iASL Compiler/Disassembler and Tools:
7820 No changes for this release.
7822 ----------------------------------------
7823 21 July 2006. Summary of changes for version 20060721:
7825 1) ACPI CA Core Subsystem:
7827 The full source code for the ASL test suite used to validate the iASL
7828 compiler and the ACPICA core subsystem is being released with the ACPICA
7829 source for the first time. The source is contained in a separate package
7831 consists of over 1100 files that exercise all ASL/AML operators. The
7833 should appear on the Intel/ACPI web site shortly. (Valery Podrezov,
7837 Completed a new design and implementation for support of the ACPI Global
7838 Lock. On the OS side, the global lock is now treated as a standard AML
7839 mutex. Previously, multiple OS threads could "acquire" the global lock
7840 simultaneously. However, this could cause the BIOS to be starved out of
7842 lock - especially in cases such as the Embedded Controller driver where
7843 there is a tight coupling between the OS and the BIOS.
7845 Implemented an optimization for the ACPI Global Lock interrupt mechanism.
7846 The Global Lock interrupt handler no longer queues the execution of a
7847 separate thread to signal the global lock semaphore. Instead, the
7849 is signaled directly from the interrupt handler.
7851 Implemented support within the AML interpreter for package objects that
7852 contain a larger AML length (package list length) than the package
7854 count. In this case, the length of the package is truncated to match the
7855 package element count. Some BIOS code apparently modifies the package
7857 on the fly, and this change supports this behavior. Provides
7859 with the MS AML interpreter. (With assistance from Fiodor Suietov)
7861 Implemented a temporary fix for the BankValue parameter of a Bank Field
7863 support all constant values, now including the Zero and One opcodes.
7864 Evaluation of this parameter must eventually be converted to a full
7866 evaluation. A not-implemented error is now returned (temporarily) for
7868 constant values for this parameter.
7870 Fixed problem reports (Fiodor Suietov) integrated:
7871 - Fix for premature object deletion after CopyObject on Operation Region
7875 Example Code and Data Size: These are the sizes for the OS-independent
7876 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7877 debug version of the code includes the debug output trace mechanism and
7879 a much larger code and data size.
7882 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total
7883 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total
7885 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
7886 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
7889 2) iASL Compiler/Disassembler and Tools:
7891 No changes for this release.
7893 ----------------------------------------
7894 07 July 2006. Summary of changes for version 20060707:
7896 1) ACPI CA Core Subsystem:
7898 Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers
7899 that do not allow the initialization of address pointers within packed
7900 structures - even though the hardware itself may support misaligned
7901 transfers. Some of the debug data structures are packed by default to
7904 Added an error message for the case where AcpiOsGetThreadId() returns
7906 A non-zero value is required by the core ACPICA code to ensure the proper
7907 operation of AML mutexes and recursive control methods.
7909 The DSDT is now the only ACPI table that determines whether the AML
7910 interpreter is in 32-bit or 64-bit mode. Not really a functional change,
7912 the hooks for per-table 32/64 switching have been removed from the code.
7914 clarification to the ACPI specification is forthcoming in ACPI 3.0B.
7916 Fixed a possible leak of an OwnerID in the error path of
7917 AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID
7918 deletion to a single place in AcpiTbUninstallTable to correct possible
7920 when using the AcpiTbDeleteTablesByType interface (with assistance from
7923 Fixed a problem with Serialized control methods where the semaphore
7924 associated with the method could be over-signaled after multiple method
7927 Fixed two issues with the locking of the internal namespace data
7929 Both the Unload() operator and AcpiUnloadTable interface now lock the
7930 namespace during the namespace deletion associated with the table unload
7931 (with assistance from Linn Crosetto.)
7933 Fixed problem reports (Valery Podrezov) integrated:
7934 - Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426)
7936 Fixed problem reports (Fiodor Suietov) integrated:
7937 - Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369)
7938 - On Address Space handler deletion, needless deactivation call (BZ 374)
7939 - AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ
7941 - Possible memory leak, Notify sub-objects of Processor, Power,
7944 - AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378)
7945 - Minimum Length of RSDT should be validated (BZ 379)
7946 - AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no
7948 - AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type
7952 Example Code and Data Size: These are the sizes for the OS-independent
7953 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7954 debug version of the code includes the debug output trace mechanism and
7956 a much larger code and data size.
7959 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
7960 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
7962 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
7963 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
7966 2) iASL Compiler/Disassembler and Tools:
7968 Fixed problem reports:
7969 Compiler segfault when ASL contains a long (>1024) String declaration (BZ
7972 ----------------------------------------
7973 23 June 2006. Summary of changes for version 20060623:
7975 1) ACPI CA Core Subsystem:
7977 Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This
7978 allows the type to be customized to the host OS for improved efficiency
7979 (since a spinlock is usually a very small object.)
7981 Implemented support for "ignored" bits in the ACPI registers. According
7983 the ACPI specification, these bits should be preserved when writing the
7984 registers via a read/modify/write cycle. There are 3 bits preserved in
7986 manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11].
7988 Implemented the initial deployment of new OSL mutex interfaces. Since
7990 host operating systems have separate mutex and semaphore objects, this
7991 feature was requested. The base code now uses mutexes (and the new mutex
7992 interfaces) wherever a binary semaphore was used previously. However, for
7993 the current release, the mutex interfaces are defined as macros to map
7995 to the existing semaphore interfaces. Therefore, no OSL changes are
7997 at this time. (See acpiosxf.h)
7999 Fixed several problems with the support for the control method SyncLevel
8000 parameter. The SyncLevel now works according to the ACPI specification
8002 in concert with the Mutex SyncLevel parameter, since the current
8004 is a property of the executing thread. Mutual exclusion for control
8006 is now implemented with a mutex instead of a semaphore.
8008 Fixed three instances of the use of the C shift operator in the bitfield
8009 support code (exfldio.c) to avoid the use of a shift value larger than
8011 target data width. The behavior of C compilers is undefined in this case
8013 can cause unpredictable results, and therefore the case must be detected
8015 avoided. (Fiodor Suietov)
8017 Added an info message whenever an SSDT or OEM table is loaded dynamically
8018 via the Load() or LoadTable() ASL operators. This should improve
8020 capability since it will show exactly what tables have been loaded
8022 the tables present in the RSDT/XSDT.)
8024 Example Code and Data Size: These are the sizes for the OS-independent
8025 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8026 debug version of the code includes the debug output trace mechanism and
8028 a much larger code and data size.
8031 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
8032 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
8034 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
8035 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
8038 2) iASL Compiler/Disassembler and Tools:
8040 No changes for this release.
8042 ----------------------------------------
8043 08 June 2006. Summary of changes for version 20060608:
8045 1) ACPI CA Core Subsystem:
8047 Converted the locking mutex used for the ACPI hardware to a spinlock.
8049 change should eliminate all problems caused by attempting to acquire a
8050 semaphore at interrupt level, and it means that all ACPICA external
8051 interfaces that directly access the ACPI hardware can be safely called
8053 interrupt level. OSL code that implements the semaphore interfaces should
8055 able to eliminate any workarounds for being called at interrupt level.
8057 Fixed a regression introduced in 20060526 where the ACPI device
8058 initialization could be prematurely aborted with an AE_NOT_FOUND if a
8060 did not have an optional _INI method.
8062 Fixed an IndexField issue where a write to the Data Register should be
8063 limited in size to the AccessSize (width) of the IndexField itself. (BZ
8067 Fixed problem reports (Valery Podrezov) integrated:
8068 - Allow store of ThermalZone objects to Debug object (BZ 5369/5370)
8070 Fixed problem reports (Fiodor Suietov) integrated:
8071 - AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364)
8073 Removed four global mutexes that were obsolete and were no longer being
8076 Example Code and Data Size: These are the sizes for the OS-independent
8077 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8078 debug version of the code includes the debug output trace mechanism and
8080 a much larger code and data size.
8083 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
8084 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
8086 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
8087 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
8090 2) iASL Compiler/Disassembler and Tools:
8092 Fixed a fault when using -g option (get tables from registry) on Windows
8095 Fixed problem reports integrated:
8096 - Generate error if CreateField NumBits parameter is zero. (BZ 405)
8097 - Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor
8099 - Global table revision override (-r) is ignored (BZ 413)
8101 ----------------------------------------
8102 26 May 2006. Summary of changes for version 20060526:
8104 1) ACPI CA Core Subsystem:
8106 Restructured, flattened, and simplified the internal interfaces for
8107 namespace object evaluation - resulting in smaller code, less CPU stack
8109 and fewer interfaces. (With assistance from Mikhail Kouzmich)
8111 Fixed a problem with the CopyObject operator where the first parameter
8113 not typed correctly for the parser, interpreter, compiler, and
8115 Caused various errors and unexpected behavior.
8117 Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits
8118 produced incorrect results with some C compilers. Since the behavior of C
8119 compilers when the shift value is larger than the datatype width is
8120 apparently not well defined, the interpreter now detects this condition
8122 simply returns zero as expected in all such cases. (BZ 395)
8124 Fixed problem reports (Valery Podrezov) integrated:
8125 - Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329)
8126 - Allow interpreter to handle nested method declarations (BZ 5361)
8128 Fixed problem reports (Fiodor Suietov) integrated:
8129 - AcpiTerminate doesn't free debug memory allocation list objects (BZ
8131 - After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ
8133 - AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357)
8134 - Resource Manager should return AE_TYPE for non-device objects (BZ 358)
8135 - Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359)
8136 - Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360)
8137 - Incomplete cleanup branch in AcpiPsParseAml (BZ 361)
8138 - Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362)
8139 - AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ
8141 - Status of the Global Initialization Handler call not used (BZ 366)
8142 - Incorrect object parameter to Global Initialization Handler (BZ 367)
8144 Example Code and Data Size: These are the sizes for the OS-independent
8145 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8146 debug version of the code includes the debug output trace mechanism and
8148 a much larger code and data size.
8151 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
8152 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
8154 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
8155 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
8158 2) iASL Compiler/Disassembler and Tools:
8160 Modified the parser to allow the names IO, DMA, and IRQ to be used as
8161 namespace identifiers with no collision with existing resource descriptor
8162 macro names. This provides compatibility with other ASL compilers and is
8163 most useful for disassembly/recompilation of existing tables without
8165 errors. (With assistance from Thomas Renninger)
8167 Disassembler: fixed an incorrect disassembly problem with the
8168 DataTableRegion and CopyObject operators. Fixed a possible fault during
8169 disassembly of some Alias operators.
8171 ----------------------------------------
8172 12 May 2006. Summary of changes for version 20060512:
8174 1) ACPI CA Core Subsystem:
8176 Replaced the AcpiOsQueueForExecution interface with a new interface named
8177 AcpiOsExecute. The major difference is that the new interface does not
8179 a Priority parameter, this appeared to be useless and has been replaced
8182 Type parameter. The Type tells the host what type of execution is being
8183 requested, such as global lock handler, notify handler, GPE handler, etc.
8184 This allows the host to queue and execute the request as appropriate for
8186 request type, possibly using different work queues and different
8188 for the various request types. This enables fixes for multithreading
8189 deadlock problems such as BZ #5534, and will require changes to all
8191 OS interface layers. (Alexey Starikovskiy and Bob Moore)
8193 Fixed a possible memory leak associated with the support for the so-
8195 "implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor
8198 Fixed a problem with the Load() operator where a table load from an
8199 operation region could overwrite an internal table buffer by up to 7
8201 and cause alignment faults on IPF systems. (With assistance from Luming
8204 Example Code and Data Size: These are the sizes for the OS-independent
8205 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8206 debug version of the code includes the debug output trace mechanism and
8208 a much larger code and data size.
8211 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
8212 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
8214 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
8215 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
8219 2) iASL Compiler/Disassembler and Tools:
8221 Disassembler: Implemented support to cross reference the internal
8223 and automatically generate ASL External() statements for symbols not
8225 within the current table being disassembled. This will simplify the
8226 disassembly and recompilation of interdependent tables such as SSDTs
8228 these statements will no longer have to be added manually.
8230 Disassembler: Implemented experimental support to automatically detect
8231 invocations of external control methods and generate appropriate
8233 statements. This is problematic because the AML cannot be correctly
8235 until the number of arguments for each control method is known.
8237 standalone method invocations and invocations as the source operand of a
8238 Store() statement are supported.
8240 Disassembler: Implemented support for the ASL pseudo-operators LNotEqual,
8241 LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()),
8242 LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code
8243 more readable and likely closer to the original ASL source.
8245 ----------------------------------------
8246 21 April 2006. Summary of changes for version 20060421:
8248 1) ACPI CA Core Subsystem:
8250 Removed a device initialization optimization introduced in 20051216 where
8251 the _STA method was not run unless an _INI was also present for the same
8252 device. This optimization could cause problems because it could allow
8254 methods to be run within a not-present device subtree. (If a not-present
8255 device had no _INI, _STA would not be run, the not-present status would
8257 be discovered, and the children of the device would be incorrectly
8260 Implemented a new _STA optimization where namespace subtrees that do not
8261 contain _INI are identified and ignored during device initialization.
8262 Selectively running _STA can significantly improve boot time on large
8263 machines (with assistance from Len Brown.)
8265 Implemented support for the device initialization case where the returned
8266 _STA flags indicate a device not-present but functioning. In this case,
8268 is not run, but the device children are examined for presence, as per the
8271 Implemented an additional change to the IndexField support in order to
8272 conform to MS behavior. The value written to the Index Register is not
8273 simply a byte offset, it is a byte offset in units of the access width of
8274 the parent Index Field. (Fiodor Suietov)
8276 Defined and deployed a new OSL interface, AcpiOsValidateAddress. This
8277 interface is called during the creation of all AML operation regions, and
8278 allows the host OS to exert control over what addresses it will allow the
8279 AML code to access. Operation Regions whose addresses are disallowed will
8280 cause a runtime exception when they are actually accessed (will not
8282 or abort table loading.) See oswinxf or osunixxf for an example
8285 Defined and deployed a new OSL interface, AcpiOsValidateInterface. This
8286 interface allows the host OS to match the various "optional"
8287 interface/behavior strings for the _OSI predefined control method as
8288 appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf
8289 for an example implementation.
8291 Restructured and corrected various problems in the exception handling
8293 paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod
8294 (with assistance from Takayoshi Kochi.)
8296 Modified the Linux source converter to ignore quoted string literals
8298 converting identifiers from mixed to lower case. This will correct
8300 with the disassembler and other areas where such strings must not be
8303 The ACPI_FUNCTION_* macros no longer require quotes around the function
8304 name. This allows the Linux source converter to convert the names, now
8306 the converter ignores quoted strings.
8308 Example Code and Data Size: These are the sizes for the OS-independent
8309 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8310 debug version of the code includes the debug output trace mechanism and
8312 a much larger code and data size.
8316 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
8317 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
8319 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
8320 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
8323 2) iASL Compiler/Disassembler and Tools:
8325 Implemented 3 new warnings for iASL, and implemented multiple warning
8329 1) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is
8331 WAIT_FOREVER (0xFFFF) and the code does not examine the return value to
8332 check for the possible timeout, a warning is issued.
8334 2) Useless operators: If an ASL operator does not specify an optional
8336 operand and it also does not use the function return value from the
8337 operator, a warning is issued since the operator effectively does
8340 3) Unreferenced objects: If a namespace object is created, but never
8341 referenced, a warning is issued. This is a warning level 2 since there
8343 cases where this is ok, such as when a secondary table is loaded that
8345 the unreferenced objects. Even so, care is taken to only flag objects
8347 don't look like they will ever be used. For example, the reserved methods
8348 (starting with an underscore) are usually not referenced because it is
8349 expected that the OS will invoke them.
8351 ----------------------------------------
8352 31 March 2006. Summary of changes for version 20060331:
8354 1) ACPI CA Core Subsystem:
8356 Implemented header file support for the following additional ACPI tables:
8357 ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this
8359 all current and known ACPI tables are now defined in the ACPICA headers
8361 are available for use by device drivers and other software.
8363 Implemented support to allow tables that contain ACPI names with invalid
8364 characters to be loaded. Previously, this would cause the table load to
8365 fail, but since there are several known cases of such tables on existing
8366 machines, this change was made to enable ACPI support for them. Also,
8368 matches the behavior of the Microsoft ACPI implementation.
8370 Fixed a couple regressions introduced during the memory optimization in
8372 20060317 release. The namespace node definition required additional
8373 reorganization and an internal datatype that had been changed to 8-bit
8375 restored to 32-bit. (Valery Podrezov)
8377 Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState
8378 could be passed through to AcpiOsReleaseObject which is unexpected. Such
8379 null pointers are now trapped and ignored, matching the behavior of the
8380 previous implementation before the deployment of AcpiOsReleaseObject.
8381 (Valery Podrezov, Fiodor Suietov)
8383 Fixed a memory mapping leak during the deletion of a SystemMemory
8385 region where a cached memory mapping was not deleted. This became a
8386 noticeable problem for operation regions that are defined within
8388 used control methods. (Dana Meyers)
8390 Reorganized the ACPI table header files into two main files: one for the
8391 ACPI tables consumed by the ACPICA core, and another for the
8393 ACPI tables that are consumed by the drivers and other software. The
8395 FADT definitions were merged into one common section and three different
8396 tables (ACPI 1.0, 1.0+, and 2.0)
8398 Example Code and Data Size: These are the sizes for the OS-independent
8399 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8400 debug version of the code includes the debug output trace mechanism and
8402 a much larger code and data size.
8405 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
8406 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
8408 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
8409 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
8412 2) iASL Compiler/Disassembler and Tools:
8414 Disassembler: Implemented support to decode and format all non-AML ACPI
8415 tables (tables other than DSDTs and SSDTs.) This includes the new tables
8416 added to the ACPICA headers, therefore all current and known ACPI tables
8420 Disassembler: The change to allow ACPI names with invalid characters also
8421 enables the disassembly of such tables. Invalid characters within names
8423 changed to '*' to make the name printable; the iASL compiler will still
8424 generate an error for such names, however, since this is an invalid ACPI
8427 Implemented an option for AcpiXtract (-a) to extract all tables found in
8429 input file. The default invocation extracts only the DSDTs and SSDTs.
8431 Fixed a couple of gcc generation issues for iASL and AcpiExec and added a
8432 makefile for the AcpiXtract utility.
8434 ----------------------------------------
8435 17 March 2006. Summary of changes for version 20060317:
8437 1) ACPI CA Core Subsystem:
8439 Implemented the use of a cache object for all internal namespace nodes.
8440 Since there are about 1000 static nodes in a typical system, this will
8441 decrease memory use for cache implementations that minimize per-
8443 overhead (such as a slab allocator.)
8445 Removed the reference count mechanism for internal namespace nodes, since
8447 was deemed unnecessary. This reduces the size of each namespace node by
8448 about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit
8450 and 32 bytes for the 64-bit case.
8452 Optimized several internal data structures to reduce object size on 64-
8454 platforms by packing data within the 64-bit alignment. This includes the
8455 frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static
8456 instances corresponding to the namespace objects.
8458 Added two new strings for the predefined _OSI method: "Windows 2001.1
8462 Split the allocation tracking mechanism out to a separate file, from
8463 utalloc.c to uttrack.c. This mechanism appears to be only useful for
8464 application-level code. Kernels may wish to not include uttrack.c in
8467 Removed all remnants of the obsolete ACPI_REPORT_* macros and the
8469 code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING
8472 Code and Data Size: These are the sizes for the acpica.lib produced by
8474 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
8476 driver or OSPM code. The debug version of the code includes the debug
8478 trace mechanism and has a much larger code and data size. Note that these
8479 values will vary depending on the efficiency of the compiler and the
8480 compiler options used during generation.
8483 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
8484 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
8486 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
8487 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
8490 2) iASL Compiler/Disassembler and Tools:
8492 Implemented an ANSI C version of the acpixtract utility. This version
8494 automatically extract the DSDT and all SSDTs from the input acpidump text
8495 file and dump the binary output to separate files. It can also display a
8496 summary of the input file including the headers for each table found and
8497 will extract any single ACPI table, with any signature. (See
8498 source/tools/acpixtract)
8500 ----------------------------------------
8501 10 March 2006. Summary of changes for version 20060310:
8503 1) ACPI CA Core Subsystem:
8505 Tagged all external interfaces to the subsystem with the new
8506 ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to
8508 kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL
8509 macro. The default definition is NULL.
8511 Added the ACPI_THREAD_ID type for the return value from
8513 This allows the host to define this as necessary to simplify kernel
8514 integration. The default definition is ACPI_NATIVE_UINT.
8516 Fixed two interpreter problems related to error processing, the deletion
8518 objects, and placing invalid pointers onto the internal operator result
8519 stack. BZ 6028, 6151 (Valery Podrezov)
8521 Increased the reference count threshold where a warning is emitted for
8523 reference counts in order to eliminate unnecessary warnings on systems
8525 large namespaces (especially 64-bit.) Increased the value from 0x400 to
8528 Due to universal disagreement as to the meaning of the 'c' in the
8530 function, the ACPI_MEM_CALLOCATE macro has been renamed to
8531 ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'.
8532 ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and
8535 Code and Data Size: These are the sizes for the acpica.lib produced by
8537 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
8539 driver or OSPM code. The debug version of the code includes the debug
8541 trace mechanism and has a much larger code and data size. Note that these
8542 values will vary depending on the efficiency of the compiler and the
8543 compiler options used during generation.
8546 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
8547 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
8549 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
8550 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
8553 2) iASL Compiler/Disassembler:
8555 Disassembler: implemented support for symbolic resource descriptor
8556 references. If a CreateXxxxField operator references a fixed offset
8559 resource descriptor, a name is assigned to the descriptor and the offset
8561 translated to the appropriate resource tag and pathname. The addition of
8562 this support brings the disassembled code very close to the original ASL
8563 source code and helps eliminate run-time errors when the disassembled
8565 is modified (and recompiled) in such a way as to invalidate the original
8568 Implemented support for a Descriptor Name as the last parameter to the
8570 Register() macro. This parameter was inadvertently left out of the ACPI
8571 specification, and will be added for ACPI 3.0b.
8573 Fixed a problem where the use of the "_OSI" string (versus the full path
8574 "\_OSI") caused an internal compiler error. ("No back ptr to op")
8576 Fixed a problem with the error message that occurs when an invalid string
8578 used for a _HID object (such as one with an embedded asterisk:
8580 The correct message is now displayed.
8582 ----------------------------------------
8583 17 February 2006. Summary of changes for version 20060217:
8585 1) ACPI CA Core Subsystem:
8587 Implemented a change to the IndexField support to match the behavior of
8589 Microsoft AML interpreter. The value written to the Index register is now
8591 byte offset, no longer an index based upon the width of the Data
8593 This should fix IndexField problems seen on some machines where the Data
8594 register is not exactly one byte wide. The ACPI specification will be
8595 clarified on this point.
8597 Fixed a problem where several resource descriptor types could overrun the
8598 internal descriptor buffer due to size miscalculation: VendorShort,
8599 VendorLong, and Interrupt. This was noticed on IA64 machines, but could
8600 affect all platforms.
8602 Fixed a problem where individual resource descriptors were misaligned
8604 the internal buffer, causing alignment faults on IA64 platforms.
8606 Code and Data Size: These are the sizes for the acpica.lib produced by
8608 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
8610 driver or OSPM code. The debug version of the code includes the debug
8612 trace mechanism and has a much larger code and data size. Note that these
8613 values will vary depending on the efficiency of the compiler and the
8614 compiler options used during generation.
8617 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
8618 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
8620 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
8621 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
8624 2) iASL Compiler/Disassembler:
8626 Implemented support for new reserved names: _WDG and _WED are Microsoft
8627 extensions for Windows Instrumentation Management, _TDL is a new ACPI-
8628 defined method (Throttling Depth Limit.)
8630 Fixed a problem where a zero-length VendorShort or VendorLong resource
8631 descriptor was incorrectly emitted as a descriptor of length one.
8633 ----------------------------------------
8634 10 February 2006. Summary of changes for version 20060210:
8636 1) ACPI CA Core Subsystem:
8638 Removed a couple of extraneous ACPI_ERROR messages that appeared during
8639 normal execution. These became apparent after the conversion from
8642 Fixed a problem where the CreateField operator could hang if the BitIndex
8644 NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359)
8646 Fixed a problem where a DeRefOf operation on a buffer object incorrectly
8647 failed with an exception. This also fixes a couple of related RefOf and
8648 DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387)
8650 Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead
8652 AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov,
8656 Implemented a memory cleanup at the end of the execution of each
8658 of an AML While() loop, preventing the accumulation of outstanding
8660 (Valery Podrezov, BZ 5427)
8662 Eliminated a chunk of duplicate code in the object resolution code.
8666 Fixed several warnings during the 64-bit code generation.
8668 The AcpiSrc source code conversion tool now inserts one line of
8670 after an if() statement that is followed immediately by a comment,
8672 readability of the Linux code.
8674 Code and Data Size: The current and previous library sizes for the core
8675 subsystem are shown below. These are the code and data sizes for the
8676 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8678 values do not include any ACPI driver or OSPM code. The debug version of
8680 code includes the debug output trace mechanism and has a much larger code
8681 and data size. Note that these values will vary depending on the
8683 of the compiler and the compiler options used during generation.
8686 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
8687 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
8689 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
8690 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
8693 2) iASL Compiler/Disassembler:
8695 Fixed a problem with the disassembly of a BankField operator with a
8697 expression for the BankValue parameter.
8699 ----------------------------------------
8700 27 January 2006. Summary of changes for version 20060127:
8702 1) ACPI CA Core Subsystem:
8704 Implemented support in the Resource Manager to allow unresolved
8706 references within resource package objects for the _PRT method. This
8708 is in addition to the previously implemented unresolved reference support
8709 within the AML parser. If the interpreter slack mode is enabled, these
8710 unresolved references will be passed through to the caller as a NULL
8714 Implemented and deployed new macros and functions for error and warning
8715 messages across the subsystem. These macros are simpler and generate less
8716 code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION,
8717 ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older
8718 macros remain defined to allow ACPI drivers time to migrate to the new
8721 Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of
8723 Acquire/Release Lock OSL interfaces.
8725 Fixed a problem where Alias ASL operators are sometimes not correctly
8726 resolved, in both the interpreter and the iASL compiler.
8728 Fixed several problems with the implementation of the
8729 ConcatenateResTemplate
8730 ASL operator. As per the ACPI specification, zero length buffers are now
8731 treated as a single EndTag. One-length buffers always cause a fatal
8732 exception. Non-zero length buffers that do not end with a full 2-byte
8734 cause a fatal exception.
8736 Fixed a possible structure overwrite in the AcpiGetObjectInfo external
8737 interface. (With assistance from Thomas Renninger)
8739 Code and Data Size: The current and previous library sizes for the core
8740 subsystem are shown below. These are the code and data sizes for the
8741 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8743 values do not include any ACPI driver or OSPM code. The debug version of
8745 code includes the debug output trace mechanism and has a much larger code
8746 and data size. Note that these values will vary depending on the
8748 of the compiler and the compiler options used during generation.
8751 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
8752 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
8754 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
8755 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
8758 2) iASL Compiler/Disassembler:
8760 Fixed an internal error that was generated for any forward references to
8764 ----------------------------------------
8765 13 January 2006. Summary of changes for version 20060113:
8767 1) ACPI CA Core Subsystem:
8769 Added 2006 copyright to all module headers and signons. This affects
8770 virtually every file in the ACPICA core subsystem, iASL compiler, and the
8773 Enhanced the ACPICA error reporting in order to simplify user migration
8775 the non-debug version of ACPICA. Replaced all instances of the
8776 ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN
8778 levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros,
8779 respectively. This preserves all error and warning messages in the non-
8781 version of the ACPICA code (this has been referred to as the "debug lite"
8782 option.) Over 200 cases were converted to create a total of over 380
8783 error/warning messages across the ACPICA code. This increases the code
8785 data size of the default non-debug version of the code somewhat (about
8787 but all error/warning reporting may be disabled if desired (and code
8788 eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time
8789 configuration option. The size of the debug version of ACPICA remains
8793 Fixed a memory leak within the AML Debugger "Set" command. One object was
8794 not properly deleted for every successful invocation of the command.
8796 Code and Data Size: The current and previous library sizes for the core
8797 subsystem are shown below. These are the code and data sizes for the
8798 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8800 values do not include any ACPI driver or OSPM code. The debug version of
8802 code includes the debug output trace mechanism and has a much larger code
8803 and data size. Note that these values will vary depending on the
8805 of the compiler and the compiler options used during generation.
8808 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
8809 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
8811 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
8812 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
8815 2) iASL Compiler/Disassembler:
8817 The compiler now officially supports the ACPI 3.0a specification that was
8818 released on December 30, 2005. (Specification is available at
8821 ----------------------------------------
8822 16 December 2005. Summary of changes for version 20051216:
8824 1) ACPI CA Core Subsystem:
8826 Implemented optional support to allow unresolved names within ASL Package
8827 objects. A null object is inserted in the package when a named reference
8828 cannot be located in the current namespace. Enabled via the interpreter
8829 slack flag, this should eliminate AE_NOT_FOUND exceptions seen on
8831 that contain such code.
8833 Implemented an optimization to the initialization sequence that can
8835 boot time. During ACPI device initialization, the _STA method is now run
8837 and only if the _INI method exists. The _STA method is used to determine
8839 the device is present; An _INI can only be run if _STA returns present,
8841 it is a waste of time to run the _STA method if the _INI does not exist.
8842 (Prototype and assistance from Dong Wei)
8844 Implemented use of the C99 uintptr_t for the pointer casting macros if it
8846 available in the current compiler. Otherwise, the default (void *) cast
8850 Fixed some possible memory leaks found within the execution path of the
8851 Break, Continue, If, and CreateField operators. (Valery Podrezov)
8853 Fixed a problem introduced in the 20051202 release where an exception is
8854 generated during method execution if a control method attempts to declare
8857 Moved resource descriptor string constants that are used by both the AML
8858 disassembler and AML debugger to the common utilities directory so that
8859 these components are independent.
8861 Implemented support in the AcpiExec utility (-e switch) to globally
8863 exceptions during control method execution (method is not aborted.)
8865 Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix
8868 Code and Data Size: The current and previous library sizes for the core
8869 subsystem are shown below. These are the code and data sizes for the
8870 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8872 values do not include any ACPI driver or OSPM code. The debug version of
8874 code includes the debug output trace mechanism and has a much larger code
8875 and data size. Note that these values will vary depending on the
8877 of the compiler and the compiler options used during generation.
8880 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
8881 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
8883 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
8884 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
8887 2) iASL Compiler/Disassembler:
8889 Fixed a problem where a CPU stack overflow fault could occur if a
8891 method call was made from within a Return statement.
8893 ----------------------------------------
8894 02 December 2005. Summary of changes for version 20051202:
8896 1) ACPI CA Core Subsystem:
8898 Modified the parsing of control methods to no longer create namespace
8899 objects during the first pass of the parse. Objects are now created only
8900 during the execute phase, at the moment the namespace creation operator
8902 encountered in the AML (Name, OperationRegion, CreateByteField, etc.)
8904 should eliminate ALREADY_EXISTS exceptions seen on some machines where
8905 reentrant control methods are protected by an AML mutex. The mutex will
8907 correctly block multiple threads from attempting to create the same
8911 Increased the number of available Owner Ids for namespace object tracking
8912 from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen
8914 some machines with a large number of ACPI tables (either static or
8917 Fixed a problem with the AcpiExec utility where a fault could occur when
8919 -b switch (batch mode) is used.
8921 Enhanced the namespace dump routine to output the owner ID for each
8924 Code and Data Size: The current and previous library sizes for the core
8925 subsystem are shown below. These are the code and data sizes for the
8926 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8928 values do not include any ACPI driver or OSPM code. The debug version of
8930 code includes the debug output trace mechanism and has a much larger code
8931 and data size. Note that these values will vary depending on the
8933 of the compiler and the compiler options used during generation.
8936 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
8937 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
8939 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
8940 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
8943 2) iASL Compiler/Disassembler:
8945 Fixed a parse error during compilation of certain Switch/Case constructs.
8947 simplify the parse, the grammar now allows for multiple Default
8949 and this error is now detected and flagged during the analysis phase.
8951 Disassembler: The disassembly now includes the contents of the original
8952 table header within a comment at the start of the file. This includes the
8953 name and version of the original ASL compiler.
8955 ----------------------------------------
8956 17 November 2005. Summary of changes for version 20051117:
8958 1) ACPI CA Core Subsystem:
8960 Fixed a problem in the AML parser where the method thread count could be
8961 decremented below zero if any errors occurred during the method parse
8963 This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some
8965 This also fixed a related regression with the mechanism that detects and
8966 corrects methods that cannot properly handle reentrancy (related to the
8967 deployment of the new OwnerId mechanism.)
8969 Eliminated the pre-parsing of control methods (to detect errors) during
8970 table load. Related to the problem above, this was causing unwind issues
8972 any errors occurred during the parse, and it seemed to be overkill. A
8974 load should not be aborted if there are problems with any single control
8975 method, thus rendering this feature rather pointless.
8977 Fixed a problem with the new table-driven resource manager where an
8979 buffer overflow could occur for small resource templates.
8981 Implemented a new external interface, AcpiGetVendorResource. This
8983 will find and return a vendor-defined resource descriptor within a _CRS
8985 _PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn
8988 Removed the length limit (200) on string objects as per the upcoming ACPI
8989 3.0A specification. This affects the following areas of the interpreter:
8991 any implicit conversion of a Buffer to a String, 2) a String object
8993 of the ASL Concatentate operator, 3) the String object result of the ASL
8996 Fixed a problem in the Windows OS interface layer (OSL) where a
8998 on a semaphore object would incorrectly timeout. This allows the
8999 multithreading features of the AcpiExec utility to work properly under
9002 Updated the Linux makefiles for the iASL compiler and AcpiExec to include
9003 the recently added file named "utresrc.c".
9005 Code and Data Size: The current and previous library sizes for the core
9006 subsystem are shown below. These are the code and data sizes for the
9007 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9009 values do not include any ACPI driver or OSPM code. The debug version of
9011 code includes the debug output trace mechanism and has a much larger code
9012 and data size. Note that these values will vary depending on the
9014 of the compiler and the compiler options used during generation.
9017 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
9018 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
9020 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
9021 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
9024 2) iASL Compiler/Disassembler:
9026 Removed the limit (200) on string objects as per the upcoming ACPI 3.0A
9027 specification. For the iASL compiler, this means that string literals
9029 the source ASL can be of any length.
9031 Enhanced the listing output to dump the AML code for resource descriptors
9032 immediately after the ASL code for each descriptor, instead of in a block
9034 the end of the entire resource template.
9036 Enhanced the compiler debug output to dump the entire original parse tree
9037 constructed during the parse phase, before any transforms are applied to
9039 tree. The transformed tree is dumped also.
9041 ----------------------------------------
9042 02 November 2005. Summary of changes for version 20051102:
9044 1) ACPI CA Core Subsystem:
9046 Modified the subsystem initialization sequence to improve GPE support.
9048 GPE initialization has been split into two parts in order to defer
9050 of the _PRW methods (Power Resources for Wake) until after the hardware
9052 fully initialized and the SCI handler is installed. This allows the _PRW
9053 methods to access fields protected by the Global Lock. This will fix
9055 where a NO_GLOBAL_LOCK exception has been seen during initialization.
9057 Converted the ACPI internal object disassemble and display code within
9059 AML debugger to fully table-driven operation, reducing code size and
9060 increasing maintainability.
9062 Fixed a regression with the ConcatenateResTemplate() ASL operator
9064 in the 20051021 release.
9066 Implemented support for "local" internal ACPI object types within the
9067 debugger "Object" command and the AcpiWalkNamespace external interfaces.
9068 These local types include RegionFields, BankFields, IndexFields, Alias,
9072 Moved common AML resource handling code into a new file, "utresrc.c".
9074 code is shared by both the Resource Manager and the AML Debugger.
9076 Code and Data Size: The current and previous library sizes for the core
9077 subsystem are shown below. These are the code and data sizes for the
9078 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9080 values do not include any ACPI driver or OSPM code. The debug version of
9082 code includes the debug output trace mechanism and has a much larger code
9083 and data size. Note that these values will vary depending on the
9085 of the compiler and the compiler options used during generation.
9088 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
9089 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
9091 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
9092 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
9095 2) iASL Compiler/Disassembler:
9097 Fixed a problem with very large initializer lists (more than 4000
9099 for both Buffer and Package objects where the parse stack could overflow.
9101 Enhanced the pre-compile source code scan for non-ASCII characters to
9103 characters within comment fields. The scan is now always performed and is
9105 longer optional, detecting invalid characters within a source file
9106 immediately rather than during the parse phase or later.
9108 Enhanced the ASL grammar definition to force early reductions on all
9110 style grammar elements so that the overall parse stack usage is greatly
9111 reduced. This should improve performance and reduce the possibility of
9115 Eliminated all reduce/reduce conflicts in the iASL parser generation.
9117 with the addition of a %expected statement, the compiler generates from
9118 source with no warnings.
9120 Fixed a possible segment fault in the disassembler if the input filename
9121 does not contain a "dot" extension (Thomas Renninger).
9123 ----------------------------------------
9124 21 October 2005. Summary of changes for version 20051021:
9126 1) ACPI CA Core Subsystem:
9128 Implemented support for the EM64T and other x86-64 processors. This
9129 essentially entails recognizing that these processors support non-aligned
9130 memory transfers. Previously, all 64-bit processors were assumed to lack
9131 hardware support for non-aligned transfers.
9133 Completed conversion of the Resource Manager to nearly full table-driven
9134 operation. Specifically, the resource conversion code (convert AML to
9135 internal format and the reverse) and the debug code to dump internal
9136 resource descriptors are fully table-driven, reducing code and data size
9138 improving maintainability.
9140 The OSL interfaces for Acquire and Release Lock now use a 64-bit flag
9142 on 64-bit processors instead of a fixed 32-bit word. (With assistance
9144 Alexey Starikovskiy)
9146 Implemented support within the resource conversion code for the Type-
9147 Specific byte within the various ACPI 3.0 *WordSpace macros.
9149 Fixed some issues within the resource conversion code for the type-
9151 flags for both Memory and I/O address resource descriptors. For Memory,
9152 implemented support for the MTP and TTP flags. For I/O, split the TRS and
9153 TTP flags into two separate fields.
9155 Code and Data Size: The current and previous library sizes for the core
9156 subsystem are shown below. These are the code and data sizes for the
9157 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9159 values do not include any ACPI driver or OSPM code. The debug version of
9161 code includes the debug output trace mechanism and has a much larger code
9162 and data size. Note that these values will vary depending on the
9164 of the compiler and the compiler options used during generation.
9167 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
9168 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
9170 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
9171 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
9175 2) iASL Compiler/Disassembler:
9177 Relaxed a compiler restriction that disallowed a ResourceIndex byte if
9179 corresponding ResourceSource string was not also present in a resource
9180 descriptor declaration. This restriction caused problems with existing
9181 AML/ASL code that includes the Index byte without the string. When such
9183 was disassembled, it could not be compiled without modification. Further,
9184 the modified code created a resource template with a different size than
9186 original, breaking code that used fixed offsets into the resource
9190 Removed a recent feature of the disassembler to ignore a lone
9192 byte. This byte is now emitted if present so that the exact AML can be
9193 reproduced when the disassembled code is recompiled.
9195 Improved comments and text alignment for the resource descriptor code
9196 emitted by the disassembler.
9198 Implemented disassembler support for the ACPI 3.0 AccessSize field within
9200 Register() resource descriptor.
9202 ----------------------------------------
9203 30 September 2005. Summary of changes for version 20050930:
9205 1) ACPI CA Core Subsystem:
9207 Completed a major overhaul of the Resource Manager code - specifically,
9208 optimizations in the area of the AML/internal resource conversion code.
9210 code has been optimized to simplify and eliminate duplicated code, CPU
9212 use has been decreased by optimizing function parameters and local
9213 variables, and naming conventions across the manager have been
9215 for clarity and ease of maintenance (this includes function, parameter,
9216 variable, and struct/typedef names.) The update may force changes in some
9217 driver code, depending on how resources are handled by the host OS.
9219 All Resource Manager dispatch and information tables have been moved to a
9220 single location for clarity and ease of maintenance. One new file was
9221 created, named "rsinfo.c".
9223 The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to
9224 guarantee that the argument is not evaluated twice, making them less
9226 to macro side-effects. However, since there exists the possibility of
9227 additional stack use if a particular compiler cannot optimize them (such
9229 in the debug generation case), the original macros are optionally
9231 Note that some invocations of the return_VALUE macro may now cause size
9232 mismatch warnings; the return_UINT8 and return_UINT32 macros are provided
9234 eliminate these. (From Randy Dunlap)
9236 Implemented a new mechanism to enable debug tracing for individual
9238 methods. A new external interface, AcpiDebugTrace, is provided to enable
9239 this mechanism. The intent is to allow the host OS to easily enable and
9240 disable tracing for problematic control methods. This interface can be
9241 easily exposed to a user or debugger interface if desired. See the file
9242 psxface.c for details.
9244 AcpiUtCallocate will now return a valid pointer if a length of zero is
9245 specified - a length of one is used and a warning is issued. This matches
9246 the behavior of AcpiUtAllocate.
9248 Code and Data Size: The current and previous library sizes for the core
9249 subsystem are shown below. These are the code and data sizes for the
9250 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9252 values do not include any ACPI driver or OSPM code. The debug version of
9254 code includes the debug output trace mechanism and has a much larger code
9255 and data size. Note that these values will vary depending on the
9257 of the compiler and the compiler options used during generation.
9260 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
9261 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
9263 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
9264 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
9267 2) iASL Compiler/Disassembler:
9269 A remark is issued if the effective compile-time length of a package or
9270 buffer is zero. Previously, this was a warning.
9272 ----------------------------------------
9273 16 September 2005. Summary of changes for version 20050916:
9275 1) ACPI CA Core Subsystem:
9277 Fixed a problem within the Resource Manager where support for the Generic
9278 Register descriptor was not fully implemented. This descriptor is now
9280 recognized, parsed, disassembled, and displayed.
9282 Completely restructured the Resource Manager code to utilize table-driven
9283 dispatch and lookup, eliminating many of the large switch() statements.
9285 reduces overall subsystem code size and code complexity. Affects the
9286 resource parsing and construction, disassembly, and debug dump output.
9288 Cleaned up and restructured the debug dump output for all resource
9289 descriptors. Improved readability of the output and reduced code size.
9291 Fixed a problem where changes to internal data structures caused the
9292 optional ACPI_MUTEX_DEBUG code to fail compilation if specified.
9294 Code and Data Size: The current and previous library sizes for the core
9295 subsystem are shown below. These are the code and data sizes for the
9296 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9298 values do not include any ACPI driver or OSPM code. The debug version of
9300 code includes the debug output trace mechanism and has a much larger code
9301 and data size. Note that these values will vary depending on the
9303 of the compiler and the compiler options used during generation.
9306 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
9307 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
9309 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
9310 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
9313 2) iASL Compiler/Disassembler:
9315 Updated the disassembler to automatically insert an EndDependentFn()
9317 into the ASL stream if this macro is missing in the original AML code,
9318 simplifying compilation of the resulting ASL module.
9320 Fixed a problem in the disassembler where a disassembled ResourceSource
9321 string (within a large resource descriptor) was not surrounded by quotes
9323 not followed by a comma, causing errors when the resulting ASL module was
9324 compiled. Also, escape sequences within a ResourceSource string are now
9325 handled correctly (especially "\\")
9327 ----------------------------------------
9328 02 September 2005. Summary of changes for version 20050902:
9330 1) ACPI CA Core Subsystem:
9332 Fixed a problem with the internal Owner ID allocation and deallocation
9333 mechanisms for control method execution and recursive method invocation.
9334 This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId"
9335 messages seen on some systems. Recursive method invocation depth is
9336 currently limited to 255. (Alexey Starikovskiy)
9338 Completely eliminated all vestiges of support for the "module-level
9339 executable code" until this support is fully implemented and debugged.
9341 should eliminate the NO_RETURN_VALUE exceptions seen during table load on
9342 some systems that invoke this support.
9344 Fixed a problem within the resource manager code where the transaction
9346 for a 64-bit address descriptor were handled incorrectly in the type-
9349 Consolidated duplicate code within the address descriptor resource
9351 code, reducing overall subsystem code size.
9353 Fixed a fault when using the AML debugger "disassemble" command to
9354 disassemble individual control methods.
9356 Removed references to the "release_current" directory within the Unix
9359 Code and Data Size: The current and previous core subsystem library sizes
9360 are shown below. These are the code and data sizes for the acpica.lib
9361 produced by the Microsoft Visual C++ 6.0 compiler. These values do not
9362 include any ACPI driver or OSPM code. The debug version of the code
9364 the debug output trace mechanism and has a much larger code and data
9366 Note that these values will vary depending on the efficiency of the
9368 and the compiler options used during generation.
9371 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
9372 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
9374 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
9375 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
9378 2) iASL Compiler/Disassembler:
9380 Implemented an error check for illegal duplicate values in the interrupt
9382 dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and
9385 Implemented error checking for the Irq() and IrqNoFlags() macros to
9387 too many values in the interrupt list (16 max) and invalid values in the
9390 The maximum length string literal within an ASL file is now restricted to
9391 200 characters as per the ACPI specification.
9393 Fixed a fault when using the -ln option (generate namespace listing).
9395 Implemented an error check to determine if a DescriptorName within a
9396 resource descriptor has already been used within the current scope.
9398 ----------------------------------------
9399 15 August 2005. Summary of changes for version 20050815:
9401 1) ACPI CA Core Subsystem:
9403 Implemented a full bytewise compare to determine if a table load request
9405 attempting to load a duplicate table. The compare is performed if the
9407 signatures and table lengths match. This will allow different tables with
9408 the same OEM Table ID and revision to be loaded - probably against the
9410 specification, but discovered in the field nonetheless.
9412 Added the changes.txt logfile to each of the zipped release packages.
9414 Code and Data Size: Current and previous core subsystem library sizes are
9415 shown below. These are the code and data sizes for the acpica.lib
9417 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9418 any ACPI driver or OSPM code. The debug version of the code includes the
9419 debug output trace mechanism and has a much larger code and data size.
9421 that these values will vary depending on the efficiency of the compiler
9423 the compiler options used during generation.
9426 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
9427 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
9429 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
9430 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
9433 2) iASL Compiler/Disassembler:
9435 Fixed a problem where incorrect AML code could be generated for Package
9436 objects if optimization is disabled (via the -oa switch).
9438 Fixed a problem with where incorrect AML code is generated for variable-
9439 length packages when the package length is not specified and the number
9441 initializer values is greater than 255.
9444 ----------------------------------------
9445 29 July 2005. Summary of changes for version 20050729:
9447 1) ACPI CA Core Subsystem:
9449 Implemented support to ignore an attempt to install/load a particular
9451 table more than once. Apparently there exists BIOS code that repeatedly
9452 attempts to load the same SSDT upon certain events. With assistance from
9453 Venkatesh Pallipadi.
9455 Restructured the main interface to the AML parser in order to correctly
9456 handle all exceptional conditions. This will prevent leakage of the
9458 resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on
9460 machines. With assistance from Alexey Starikovskiy.
9462 Support for "module level code" has been disabled in this version due to
9464 number of issues that have appeared on various machines. The support can
9466 enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem
9467 compilation. When the issues are fully resolved, the code will be enabled
9471 Modified the internal functions for debug print support to define the
9472 FunctionName parameter as a (const char *) for compatibility with
9474 built-in macros such as __FUNCTION__, etc.
9476 Linted the entire ACPICA source tree for both 32-bit and 64-bit.
9478 Implemented support to display an object count summary for the AML
9480 commands Object and Methods.
9482 Code and Data Size: Current and previous core subsystem library sizes are
9483 shown below. These are the code and data sizes for the acpica.lib
9485 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9486 any ACPI driver or OSPM code. The debug version of the code includes the
9487 debug output trace mechanism and has a much larger code and data size.
9489 that these values will vary depending on the efficiency of the compiler
9491 the compiler options used during generation.
9494 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
9495 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
9497 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
9498 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
9501 2) iASL Compiler/Disassembler:
9503 Fixed a regression that appeared in the 20050708 version of the compiler
9504 where an error message was inadvertently emitted for invocations of the
9506 reserved control method.
9508 ----------------------------------------
9509 08 July 2005. Summary of changes for version 20050708:
9511 1) ACPI CA Core Subsystem:
9513 The use of the CPU stack in the debug version of the subsystem has been
9514 considerably reduced. Previously, a debug structure was declared in every
9515 function that used the debug macros. This structure has been removed in
9516 favor of declaring the individual elements as parameters to the debug
9517 functions. This reduces the cumulative stack use during nested execution
9519 ACPI function calls at the cost of a small increase in the code size of
9521 debug version of the subsystem. With assistance from Alexey Starikovskiy
9525 Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent
9526 headers to define a macro that will return the current function name at
9527 runtime (such as __FUNCTION__ or _func_, etc.) The function name is used
9529 the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the
9530 compiler-dependent header, the function name is saved on the CPU stack
9532 pointer per function.) This mechanism is used because apparently there
9533 exists no standard ANSI-C defined macro that that returns the function
9536 Redesigned and reimplemented the "Owner ID" mechanism used to track
9537 namespace objects created/deleted by ACPI tables and control method
9538 execution. A bitmap is now used to allocate and free the IDs, thus
9540 the wraparound problem present in the previous implementation. The size
9542 the namespace node descriptor was reduced by 2 bytes as a result (Alexey
9545 Removed the UINT32_BIT and UINT16_BIT types that were used for the
9547 flag definitions within the headers for the predefined ACPI tables. These
9548 have been replaced by UINT8_BIT in order to increase the code portability
9550 the subsystem. If the use of UINT8 remains a problem, we may be forced to
9551 eliminate bitfields entirely because of a lack of portability.
9553 Enhanced the performance of the AcpiUtUpdateObjectReference procedure.
9555 is a frequently used function and this improvement increases the
9557 of the entire subsystem (Alexey Starikovskiy).
9559 Fixed several possible memory leaks and the inverse - premature object
9560 deletion (Alexey Starikovskiy).
9562 Code and Data Size: Current and previous core subsystem library sizes are
9563 shown below. These are the code and data sizes for the acpica.lib
9565 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9566 any ACPI driver or OSPM code. The debug version of the code includes the
9567 debug output trace mechanism and has a much larger code and data size.
9569 that these values will vary depending on the efficiency of the compiler
9571 the compiler options used during generation.
9574 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
9575 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
9577 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
9578 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
9580 ----------------------------------------
9581 24 June 2005. Summary of changes for version 20050624:
9583 1) ACPI CA Core Subsystem:
9585 Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for
9586 the host-defined cache object. This allows the OSL implementation to
9588 and type this object in any manner desired, simplifying the OSL
9589 implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for
9590 Linux, and should be defined in the OS-specific header file for other
9591 operating systems as required.
9593 Changed the interface to AcpiOsAcquireObject to directly return the
9594 requested object as the function return (instead of ACPI_STATUS.) This
9595 change was made for performance reasons, since this is the purpose of the
9596 interface in the first place. AcpiOsAcquireObject is now similar to the
9597 AcpiOsAllocate interface.
9599 Implemented a new AML debugger command named Businfo. This command
9601 information about all devices that have an associate _PRT object. The
9603 _HID, _UID, and _CID are displayed for these devices.
9605 Modified the initialization sequence in AcpiInitializeSubsystem to call
9607 OSL interface AcpiOslInitialize first, before any local initialization.
9609 change was required because the global initialization now calls OSL
9612 Enhanced the Dump command to display the entire contents of Package
9614 (including all sub-objects and their values.)
9616 Restructured the code base to split some files because of size and/or
9617 because the code logically belonged in a separate file. New files are
9619 below. All makefiles and project files included in the ACPI CA release
9622 utilities/utcache.c /* Local cache interfaces */
9623 utilities/utmutex.c /* Local mutex support */
9624 utilities/utstate.c /* State object support */
9625 interpreter/parser/psloop.c /* Main AML parse loop */
9627 Code and Data Size: Current and previous core subsystem library sizes are
9628 shown below. These are the code and data sizes for the acpica.lib
9630 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9631 any ACPI driver or OSPM code. The debug version of the code includes the
9632 debug output trace mechanism and has a much larger code and data size.
9634 that these values will vary depending on the efficiency of the compiler
9636 the compiler options used during generation.
9639 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
9640 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
9642 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
9643 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
9646 2) iASL Compiler/Disassembler:
9648 Fixed a regression introduced in version 20050513 where the use of a
9650 object within a Case() statement caused a compile time exception. The
9651 original behavior has been restored (a Match() operator is emitted.)
9653 ----------------------------------------
9654 17 June 2005. Summary of changes for version 20050617:
9656 1) ACPI CA Core Subsystem:
9658 Moved the object cache operations into the OS interface layer (OSL) to
9660 the host OS to handle these operations if desired (for example, the Linux
9661 OSL will invoke the slab allocator). This support is optional; the
9663 time define ACPI_USE_LOCAL_CACHE may be used to utilize the original
9665 code in the ACPI CA core. The new OSL interfaces are shown below. See
9666 utalloc.c for an example implementation, and acpiosxf.h for the exact
9667 interface definitions. With assistance from Alexey Starikovskiy.
9674 Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to
9676 and restore a flags parameter. This fits better with many OS lock models.
9677 Note: the current execution state (interrupt handler or not) is no longer
9678 passed to these interfaces. If necessary, the OSL must determine this
9680 by itself, a simple and fast operation. With assistance from Alexey
9683 Fixed a problem in the ACPI table handling where a valid XSDT was assumed
9684 present if the revision of the RSDP was 2 or greater. According to the
9686 specification, the XSDT is optional in all cases, and the table manager
9687 therefore now checks for both an RSDP >=2 and a valid XSDT pointer.
9688 Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs
9692 Fixed an interpreter problem with the Mid() operator in the case of an
9694 string where the resulting output string is of zero length. It now
9696 returns a valid, null terminated string object instead of a string object
9697 with a null pointer.
9699 Fixed a problem with the control method argument handling to allow a
9701 to an Arg object that already contains an object of type Device. The
9703 object is now correctly overwritten. Previously, an error was returned.
9706 Enhanced the debugger Find command to emit object values in addition to
9708 found object pathnames. The output format is the same as the dump
9712 Enhanced the debugger Set command. It now has the ability to set the
9714 of any Named integer object in the namespace (Previously, only method
9716 and args could be set.)
9718 Code and Data Size: Current and previous core subsystem library sizes are
9719 shown below. These are the code and data sizes for the acpica.lib
9721 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9722 any ACPI driver or OSPM code. The debug version of the code includes the
9723 debug output trace mechanism and has a much larger code and data size.
9725 that these values will vary depending on the efficiency of the compiler
9727 the compiler options used during generation.
9730 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
9731 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
9733 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
9734 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
9737 2) iASL Compiler/Disassembler:
9739 Fixed a regression in the disassembler where if/else/while constructs
9741 output incorrectly. This problem was introduced in the previous release
9742 (20050526). This problem also affected the single-step disassembly in the
9745 Fixed a problem where compiling the reserved _OSI method would randomly
9747 rarely) produce compile errors.
9749 Enhanced the disassembler to emit compilable code in the face of
9751 AML resource descriptors. If the optional ResourceSourceIndex is present,
9752 but the ResourceSource is not, do not emit the ResourceSourceIndex in the
9753 disassembly. Otherwise, the resulting code cannot be compiled without
9756 ----------------------------------------
9757 26 May 2005. Summary of changes for version 20050526:
9759 1) ACPI CA Core Subsystem:
9761 Implemented support to execute Type 1 and Type 2 AML opcodes appearing at
9762 the module level (not within a control method.) These opcodes are
9764 exactly once at the time the table is loaded. This type of code was legal
9766 until the release of ACPI 2.0B (2002) and is now supported within ACPI CA
9768 order to provide backwards compatibility with earlier BIOS
9770 This eliminates the "Encountered executable code at module level" warning
9771 that was previously generated upon detection of such code.
9773 Fixed a problem in the interpreter where an AE_NOT_FOUND exception could
9774 inadvertently be generated during the lookup of namespace objects in the
9775 second pass parse of ACPI tables and control methods. It appears that
9777 problem could occur during the resolution of forward references to
9781 Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function,
9782 corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This
9783 allows the deadlock detection debug code to be compiled out in the normal
9784 case, improving mutex performance (and overall subsystem performance)
9787 Implemented a handful of miscellaneous fixes for possible memory leaks on
9788 error conditions and error handling control paths. These fixes were
9789 suggested by FreeBSD and the Coverity Prevent source code analysis tool.
9791 Added a check for a null RSDT pointer in AcpiGetFirmwareTable
9793 to prevent a fault in this error case.
9795 Code and Data Size: Current and previous core subsystem library sizes are
9796 shown below. These are the code and data sizes for the acpica.lib
9798 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9799 any ACPI driver or OSPM code. The debug version of the code includes the
9800 debug output trace mechanism and has a much larger code and data size.
9802 that these values will vary depending on the efficiency of the compiler
9804 the compiler options used during generation.
9807 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
9808 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
9810 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
9811 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
9814 2) iASL Compiler/Disassembler:
9816 Implemented support to allow Type 1 and Type 2 ASL operators to appear at
9817 the module level (not within a control method.) These operators will be
9818 executed once at the time the table is loaded. This type of code was
9820 up until the release of ACPI 2.0B (2002) and is now supported by the iASL
9821 compiler in order to provide backwards compatibility with earlier BIOS
9825 The ACPI integer width (specified via the table revision ID or the -r
9826 override, 32 or 64 bits) is now used internally during compile-time
9828 folding to ensure that constants are truncated to 32 bits if necessary.
9829 Previously, the revision ID value was only emitted in the AML table
9832 An error message is now generated for the Mutex and Method operators if
9834 SyncLevel parameter is outside the legal range of 0 through 15.
9836 Fixed a problem with the Method operator ParameterTypes list handling
9838 3.0). Previously, more than 2 types or 2 arguments generated a syntax
9840 The actual underlying implementation of method argument typechecking is
9841 still under development, however.
9843 ----------------------------------------
9844 13 May 2005. Summary of changes for version 20050513:
9846 1) ACPI CA Core Subsystem:
9848 Implemented support for PCI Express root bridges -- added support for
9850 PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup.
9852 The interpreter now automatically truncates incoming 64-bit constants to
9854 bits if currently executing out of a 32-bit ACPI table (Revision < 2).
9856 also affects the iASL compiler constant folding. (Note: as per below, the
9857 iASL compiler no longer allows 64-bit constants within 32-bit tables.)
9859 Fixed a problem where string and buffer objects with "static" pointers
9860 (pointers to initialization data within an ACPI table) were not handled
9861 consistently. The internal object copy operation now always copies the
9863 to a newly allocated buffer, regardless of whether the source object is
9866 Fixed a problem with the FromBCD operator where an implicit result
9867 conversion was improperly performed while storing the result to the
9869 operand. Since this is an "explicit conversion" operator, the implicit
9870 conversion should never be performed on the output.
9872 Fixed a problem with the CopyObject operator where a copy to an existing
9873 named object did not always completely overwrite the existing object
9875 at name. Specifically, a buffer-to-buffer copy did not delete the
9879 Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces
9881 structs for consistency.
9883 Code and Data Size: Current and previous core subsystem library sizes are
9884 shown below. These are the code and data sizes for the acpica.lib
9886 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9887 any ACPI driver or OSPM code. The debug version of the code includes the
9888 debug output trace mechanism and has a much larger code and data size.
9890 that these values will vary depending on the efficiency of the compiler
9892 the compiler options used during generation.
9895 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
9896 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
9897 Current Release: (Same sizes)
9898 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
9899 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
9902 2) iASL Compiler/Disassembler:
9904 The compiler now emits a warning if an attempt is made to generate a 64-
9906 integer constant from within a 32-bit ACPI table (Revision < 2). The
9908 is truncated to 32 bits.
9910 Fixed a problem with large package objects: if the static length of the
9911 package is greater than 255, the "variable length package" opcode is
9912 emitted. Previously, this caused an error. This requires an update to the
9913 ACPI spec, since it currently (incorrectly) states that packages larger
9915 255 elements are not allowed.
9917 The disassembler now correctly handles variable length packages and
9919 larger than 255 elements.
9921 ----------------------------------------
9922 08 April 2005. Summary of changes for version 20050408:
9924 1) ACPI CA Core Subsystem:
9926 Fixed three cases in the interpreter where an "index" argument to an ASL
9927 function was still (internally) 32 bits instead of the required 64 bits.
9928 This was the Index argument to the Index, Mid, and Match operators.
9930 The "strupr" function is now permanently local (AcpiUtStrupr), since this
9932 not a POSIX-defined function and not present in most kernel-level C
9933 libraries. All references to the C library strupr function have been
9937 Completed the deployment of static functions/prototypes. All prototypes
9939 the static attribute have been moved from the headers to the owning C
9942 Implemented an extract option (-e) for the AcpiBin utility (AML binary
9943 utility). This option allows the utility to extract individual ACPI
9945 from the output of AcpiDmp. It provides the same functionality of the
9946 acpixtract.pl perl script without the worry of setting the correct perl
9947 options. AcpiBin runs on Windows and has not yet been generated/validated
9949 the Linux/Unix environment (but should be soon).
9951 Updated and fixed the table dump option for AcpiBin (-d). This option
9952 converts a single ACPI table to a hex/ascii file, similar to the output
9956 Code and Data Size: Current and previous core subsystem library sizes are
9957 shown below. These are the code and data sizes for the acpica.lib
9959 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9960 any ACPI driver or OSPM code. The debug version of the code includes the
9961 debug output trace mechanism and has a much larger code and data size.
9963 that these values will vary depending on the efficiency of the compiler
9965 the compiler options used during generation.
9968 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
9969 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
9971 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
9972 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
9975 2) iASL Compiler/Disassembler:
9977 Disassembler fix: Added a check to ensure that the table length found in
9979 ACPI table header within the input file is not longer than the actual
9981 file size. This indicates some kind of file or table corruption.
9983 ----------------------------------------
9984 29 March 2005. Summary of changes for version 20050329:
9986 1) ACPI CA Core Subsystem:
9988 An error is now generated if an attempt is made to create a Buffer Field
9990 length zero (A CreateField with a length operand of zero.)
9992 The interpreter now issues a warning whenever executable code at the
9994 level is detected during ACPI table load. This will give some idea of the
9995 prevalence of this type of code.
9997 Implemented support for references to named objects (other than control
9998 methods) within package objects.
10000 Enhanced package object output for the debug object. Package objects are
10002 completely dumped, showing all elements.
10004 Enhanced miscellaneous object output for the debug object. Any object can
10005 now be written to the debug object (for example, a device object can be
10006 written, and the type of the object will be displayed.)
10008 The "static" qualifier has been added to all local functions across both
10010 core subsystem and the iASL compiler.
10012 The number of "long" lines (> 80 chars) within the source has been
10013 significantly reduced, by about 1/3.
10015 Cleaned up all header files to ensure that all CA/iASL functions are
10016 prototyped (even static functions) and the formatting is consistent.
10018 Two new header files have been added, acopcode.h and acnames.h.
10020 Removed several obsolete functions that were no longer used.
10022 Code and Data Size: Current and previous core subsystem library sizes are
10023 shown below. These are the code and data sizes for the acpica.lib
10025 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10026 any ACPI driver or OSPM code. The debug version of the code includes the
10027 debug output trace mechanism and has a much larger code and data size.
10029 that these values will vary depending on the efficiency of the compiler
10031 the compiler options used during generation.
10034 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
10035 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
10037 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
10038 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
10042 2) iASL Compiler/Disassembler:
10044 Fixed a problem with the resource descriptor generation/support. For the
10045 ResourceSourceIndex and the ResourceSource fields, both must be present,
10047 both must be not present - can't have one without the other.
10049 The compiler now returns non-zero from the main procedure if any errors
10051 occurred during the compilation.
10054 ----------------------------------------
10055 09 March 2005. Summary of changes for version 20050309:
10057 1) ACPI CA Core Subsystem:
10059 The string-to-buffer implicit conversion code has been modified again
10061 a change to the ACPI specification. In order to match the behavior of
10063 other major ACPI implementation, the target buffer is no longer truncated
10065 the source string is smaller than an existing target buffer. This change
10066 requires an update to the ACPI spec, and should eliminate the recent
10067 AE_AML_BUFFER_LIMIT issues.
10069 The "implicit return" support was rewritten to a new algorithm that
10071 the general case. Rather than attempt to determine when a method is about
10073 exit, the result of every ASL operator is saved momentarily until the
10075 next ASL operator is executed. Therefore, no matter how the method exits,
10076 there will always be a saved implicit return value. This feature is only
10077 enabled with the AcpiGbl_EnableInterpreterSlack flag, and should
10079 AE_AML_NO_RETURN_VALUE errors when enabled.
10081 Implemented implicit conversion support for the predicate (operand) of
10083 If, Else, and While operators. String and Buffer arguments are
10085 converted to Integers.
10087 Changed the string-to-integer conversion behavior to match the new ACPI
10088 errata: "If no integer object exists, a new integer is created. The ASCII
10089 string is interpreted as a hexadecimal constant. Each string character is
10090 interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting
10091 with the first character as the most significant digit, and ending with
10093 first non-hexadecimal character or end-of-string." This means that the
10095 non-hex character terminates the conversion and this is the code that was
10098 Fixed a problem where the ObjectType operator would fail (fault) when
10100 on an Index of a Package which pointed to a null package element. The
10101 operator now properly returns zero (Uninitialized) in this case.
10103 Fixed a problem where the While operator used excessive memory by not
10104 properly popping the result stack during execution. There was no memory
10106 after execution, however. (Code provided by Valery Podrezov.)
10108 Fixed a problem where references to control methods within Package
10110 caused the method to be invoked, instead of producing a reference object
10111 pointing to the method.
10113 Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree)
10115 improve performance and reduce code size. (Code provided by Alexey
10118 Code and Data Size: Current and previous core subsystem library sizes are
10119 shown below. These are the code and data sizes for the acpica.lib
10121 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10122 any ACPI driver or OSPM code. The debug version of the code includes the
10123 debug output trace mechanism and has a much larger code and data size.
10125 that these values will vary depending on the efficiency of the compiler
10127 the compiler options used during generation.
10130 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
10131 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
10133 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
10134 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
10137 2) iASL Compiler/Disassembler:
10139 Fixed a problem with the Return operator with no arguments. Since the AML
10140 grammar for the byte encoding requires an operand for the Return opcode,
10142 compiler now emits a Return(Zero) for this case. An ACPI specification
10143 update has been written for this case.
10145 For tables other than the DSDT, namepath optimization is automatically
10146 disabled. This is because SSDTs can be loaded anywhere in the namespace,
10148 compiler has no knowledge of where, and thus cannot optimize namepaths.
10150 Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was
10151 inadvertently omitted from the ACPI specification, and will require an
10152 update to the spec.
10154 The source file scan for ASCII characters is now optional (-a). This
10156 was made because some vendors place non-ascii characters within comments.
10157 However, the scan is simply a brute-force byte compare to ensure all
10158 characters in the file are in the range 0x00 to 0x7F.
10160 Fixed a problem with the CondRefOf operator where the compiler was
10161 inappropriately checking for the existence of the target. Since the point
10163 the operator is to check for the existence of the target at run-time, the
10164 compiler no longer checks for the target existence.
10166 Fixed a problem where errors generated from the internal AML interpreter
10167 during constant folding were not handled properly, causing a fault.
10169 Fixed a problem with overly aggressive range checking for the Stall
10170 operator. The valid range (max 255) is now only checked if the operand is
10172 type Integer. All other operand types cannot be statically checked.
10174 Fixed a problem where control method references within the RefOf,
10176 and ObjectType operators were not treated properly. They are now treated
10178 actual references, not method invocations.
10180 Fixed and enhanced the "list namespace" option (-ln). This option was
10182 a number of releases ago.
10184 Improved error handling for the Field, IndexField, and BankField
10186 The compiler now cleanly reports and recovers from errors in the field
10187 component (FieldUnit) list.
10189 Fixed a disassembler problem where the optional ResourceDescriptor fields
10190 TRS and TTP were not always handled correctly.
10192 Disassembler - Comments in output now use "//" instead of "/*"
10194 ----------------------------------------
10195 28 February 2005. Summary of changes for version 20050228:
10197 1) ACPI CA Core Subsystem:
10199 Fixed a problem where the result of an Index() operator (an object
10200 reference) must increment the reference count on the target object for
10202 life of the object reference.
10204 Implemented AML Interpreter and Debugger support for the new ACPI 3.0
10205 Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and
10207 resource descriptors.
10209 Implemented support in the _OSI method for the ACPI 3.0 "Extended Address
10210 Space Descriptor" string, indicating interpreter support for the
10214 Implemented header support for the new ACPI 3.0 FADT flag bits.
10216 Implemented header support for the new ACPI 3.0 PCI Express bits for the
10218 status/enable registers.
10220 Updated header support for the MADT processor local Apic struct and MADT
10221 platform interrupt source struct for new ACPI 3.0 fields.
10223 Implemented header support for the SRAT and SLIT ACPI tables.
10225 Implemented the -s switch in AcpiExec to enable the "InterpreterSlack"
10229 Code and Data Size: Current and previous core subsystem library sizes are
10230 shown below. These are the code and data sizes for the acpica.lib
10232 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10233 any ACPI driver or OSPM code. The debug version of the code includes the
10234 debug output trace mechanism and has a much larger code and data size.
10236 that these values will vary depending on the efficiency of the compiler
10238 the compiler options used during generation.
10241 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
10242 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
10244 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
10245 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
10248 2) iASL Compiler/Disassembler:
10250 Fixed a problem with the internal 64-bit String-to-integer conversion
10252 strings less than two characters long.
10254 Fixed a problem with constant folding where the result of the Index()
10255 operator can not be considered a constant. This means that Index() cannot
10257 a type3 opcode and this will require an update to the ACPI specification.
10259 Disassembler: Implemented support for the TTP, MTP, and TRS resource
10260 descriptor fields. These fields were inadvertently ignored and not output
10262 the disassembly of the resource descriptor.
10265 ----------------------------------------
10266 11 February 2005. Summary of changes for version 20050211:
10268 1) ACPI CA Core Subsystem:
10270 Implemented ACPI 3.0 support for implicit conversion within the Match()
10271 operator. MatchObjects can now be of type integer, buffer, or string
10273 of just type integer. Package elements are implicitly converted to the
10275 of the MatchObject. This change aligns the behavior of Match() with the
10276 behavior of the other logical operators (LLess(), etc.) It also requires
10278 errata change to the ACPI specification as this support was intended for
10279 ACPI 3.0, but was inadvertently omitted.
10281 Fixed a problem with the internal implicit "to buffer" conversion.
10283 that are converted to buffers will cause buffer truncation if the string
10285 smaller than the target buffer. Integers that are converted to buffers
10287 not cause buffer truncation, only zero extension (both as per the ACPI
10288 spec.) The problem was introduced when code was added to truncate the
10289 buffer, but this should not be performed in all cases, only the string
10292 Fixed a problem with the Buffer and Package operators where the
10294 would get confused if two such operators were used as operands to an ASL
10295 operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result
10296 stack was not being popped after the execution of these operators,
10298 in an AE_NO_RETURN_VALUE exception.
10300 Fixed a problem with constructs of the form Store(Index(...),...). The
10301 reference object returned from Index was inadvertently resolved to an
10303 value. This problem was introduced in version 20050114 when the behavior
10305 Store() was modified to restrict the object types that can be used as the
10306 source operand (to match the ACPI specification.)
10308 Reduced excessive stack use within the AcpiGetObjectInfo procedure.
10310 Added a fix to aclinux.h to allow generation of AcpiExec on Linux.
10312 Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct.
10314 Code and Data Size: Current and previous core subsystem library sizes are
10315 shown below. These are the code and data sizes for the acpica.lib
10317 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10318 any ACPI driver or OSPM code. The debug version of the code includes the
10319 debug output trace mechanism and has a much larger code and data size.
10321 that these values will vary depending on the efficiency of the compiler
10323 the compiler options used during generation.
10326 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
10327 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
10329 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
10330 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
10333 2) iASL Compiler/Disassembler:
10335 Fixed a code generation problem in the constant folding optimization code
10336 where incorrect code was generated if a constant was reduced to a buffer
10337 object (i.e., a reduced type 5 opcode.)
10339 Fixed a typechecking problem for the ToBuffer operator. Caused by an
10340 incorrect return type in the internal opcode information table.
10342 ----------------------------------------
10343 25 January 2005. Summary of changes for version 20050125:
10345 1) ACPI CA Core Subsystem:
10347 Fixed a recently introduced problem with the Global Lock where the
10348 underlying semaphore was not created. This problem was introduced in
10349 version 20050114, and caused an AE_AML_NO_OPERAND exception during an
10350 Acquire() operation on _GL.
10352 The local object cache is now optional, and is disabled by default. Both
10353 AcpiExec and the iASL compiler enable the cache because they run in user
10354 mode and this enhances their performance. #define
10355 ACPI_ENABLE_OBJECT_CACHE
10356 to enable the local cache.
10358 Fixed an issue in the internal function AcpiUtEvaluateObject concerning
10360 optional "implicit return" support where an error was returned if no
10362 object was expected, but one was implicitly returned. AE_OK is now
10364 in this case and the implicitly returned object is deleted.
10365 AcpiUtEvaluateObject is only occasionally used, and only to execute
10367 methods such as _STA and _INI where the return type is known up front.
10369 Fixed a few issues with the internal convert-to-integer code. It now
10371 an error if an attempt is made to convert a null string, a string of only
10372 blanks/tabs, or a zero-length buffer. This affects both implicit
10374 and explicit conversion via the ToInteger() operator.
10376 The internal debug code in AcpiUtAcquireMutex has been commented out. It
10378 not needed for normal operation and should increase the performance of
10380 entire subsystem. The code remains in case it is needed for debug
10384 The AcpiExec source and makefile are included in the Unix/Linux package
10388 Code and Data Size: Current and previous core subsystem library sizes are
10389 shown below. These are the code and data sizes for the acpica.lib
10391 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10392 any ACPI driver or OSPM code. The debug version of the code includes the
10393 debug output trace mechanism and has a much larger code and data size.
10395 that these values will vary depending on the efficiency of the compiler
10397 the compiler options used during generation.
10400 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
10401 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
10403 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
10404 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
10406 2) iASL Compiler/Disassembler:
10408 Switch/Case support: A warning is now issued if the type of the Switch
10410 cannot be determined at compile time. For example, Switch(Arg0) will
10411 generate the warning, and the type is assumed to be an integer. As per
10413 ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate
10417 Switch/Case support: Implemented support for buffer and string objects as
10418 the switch value. This is an ACPI 3.0 feature, now that LEqual supports
10419 buffers and strings.
10421 Switch/Case support: The emitted code for the LEqual() comparisons now
10423 the switch value as the first operand, not the second. The case value is
10425 the second operand, and this allows the case value to be implicitly
10426 converted to the type of the switch value, not the other way around.
10428 Switch/Case support: Temporary variables are now emitted immediately
10430 the control method, not at the global level. This means that there are
10432 36 temps available per-method, not 36 temps per-module as was the case
10434 the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.)
10436 ----------------------------------------
10437 14 January 2005. Summary of changes for version 20050114:
10439 Added 2005 copyright to all module headers. This affects every module in
10440 the core subsystem, iASL compiler, and the utilities.
10442 1) ACPI CA Core Subsystem:
10444 Fixed an issue with the String-to-Buffer conversion code where the string
10445 null terminator was not included in the buffer after conversion, but
10447 is existing ASL that assumes the string null terminator is included. This
10449 the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was
10450 introduced in the previous version when the code was updated to correctly
10451 set the converted buffer size as per the ACPI specification. The ACPI
10453 is ambiguous and will be updated to specify that the null terminator must
10455 included in the converted buffer. This also affects the ToBuffer() ASL
10458 Fixed a problem with the Mid() ASL/AML operator where it did not work
10459 correctly on Buffer objects. Newly created sub-buffers were not being
10464 Fixed a problem in AcpiTbFindTable where incorrect string compares were
10465 performed on the OemId and OemTableId table header fields. These fields
10467 not null terminated, so strncmp is now used instead of strcmp.
10469 Implemented a restriction on the Store() ASL/AML operator to align the
10470 behavior with the ACPI specification. Previously, any object could be
10472 as the source operand. Now, the only objects that may be used are
10474 Buffers, Strings, Packages, Object References, and DDB Handles. If
10475 necessary, the original behavior can be restored by enabling the
10476 EnableInterpreterSlack flag.
10478 Enhanced the optional "implicit return" support to allow an implicit
10480 value from methods that are invoked externally via the AcpiEvaluateObject
10481 interface. This enables implicit returns from the _STA and _INI methods,
10484 Changed the Revision() ASL/AML operator to return the current version of
10486 AML interpreter, in the YYYYMMDD format. Previously, it incorrectly
10488 the supported ACPI version (This is the function of the _REV method).
10490 Updated the _REV predefined method to return the currently supported
10494 Implemented batch mode option for the AcpiExec utility (-b).
10496 Code and Data Size: Current and previous core subsystem library sizes are
10497 shown below. These are the code and data sizes for the acpica.lib
10499 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10500 any ACPI driver or OSPM code. The debug version of the code includes the
10501 debug output trace mechanism and has a much larger code and data size.
10503 that these values will vary depending on the efficiency of the compiler
10505 the compiler options used during generation.
10508 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
10509 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
10511 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
10512 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
10514 ----------------------------------------
10515 10 December 2004. Summary of changes for version 20041210:
10517 ACPI 3.0 support is nearing completion in both the iASL compiler and the
10518 ACPI CA core subsystem.
10520 1) ACPI CA Core Subsystem:
10522 Fixed a problem in the ToDecimalString operator where the resulting
10524 length was incorrectly calculated. The length is now calculated exactly,
10525 eliminating incorrect AE_STRING_LIMIT exceptions.
10527 Fixed a problem in the ToHexString operator to allow a maximum 200
10529 string to be produced.
10531 Fixed a problem in the internal string-to-buffer and buffer-to-buffer
10533 routine where the length of the resulting buffer was not truncated to the
10534 new size (if the target buffer already existed).
10536 Code and Data Size: Current and previous core subsystem library sizes are
10537 shown below. These are the code and data sizes for the acpica.lib
10539 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10540 any ACPI driver or OSPM code. The debug version of the code includes the
10541 debug output trace mechanism and has a much larger code and data size.
10543 that these values will vary depending on the efficiency of the compiler
10545 the compiler options used during generation.
10548 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
10549 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
10551 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
10552 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
10555 2) iASL Compiler/Disassembler:
10557 Implemented the new ACPI 3.0 resource template macros - DWordSpace,
10558 ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace.
10559 Includes support in the disassembler.
10561 Implemented support for the new (ACPI 3.0) parameter to the Register
10565 Fixed a problem where the _HE resource name for the Interrupt macro was
10566 referencing bit 0 instead of bit 1.
10568 Implemented check for maximum 255 interrupts in the Interrupt macro.
10570 Fixed a problem with the predefined resource descriptor names where
10571 incorrect AML code was generated if the offset within the resource buffer
10572 was 0 or 1. The optimizer shortened the AML code to a single byte opcode
10573 but did not update the surrounding package lengths.
10575 Changes to the Dma macro: All channels within the channel list must be
10577 the range 0-7. Maximum 8 channels can be specified. BusMaster operand is
10578 optional (default is BusMaster).
10580 Implemented check for maximum 7 data bytes for the VendorShort macro.
10582 The ReadWrite parameter is now optional for the Memory32 and similar
10585 ----------------------------------------
10586 03 December 2004. Summary of changes for version 20041203:
10588 1) ACPI CA Core Subsystem:
10590 The low-level field insertion/extraction code (exfldio) has been
10592 rewritten to eliminate unnecessary complexity, bugs, and boundary
10595 Fixed a problem in the ToInteger, ToBuffer, ToHexString, and
10597 operators where the input operand could be inadvertently deleted if no
10598 conversion was necessary (e.g., if the input to ToInteger was an Integer
10601 Fixed a problem with the ToDecimalString and ToHexString where an
10603 exception code was returned if the resulting string would be > 200 chars.
10604 AE_STRING_LIMIT is now returned.
10606 Fixed a problem with the Concatenate operator where AE_OK was always
10607 returned, even if the operation failed.
10609 Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128
10610 semaphores to be allocated.
10612 Code and Data Size: Current and previous core subsystem library sizes are
10613 shown below. These are the code and data sizes for the acpica.lib
10615 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10616 any ACPI driver or OSPM code. The debug version of the code includes the
10617 debug output trace mechanism and has a much larger code and data size.
10619 that these values will vary depending on the efficiency of the compiler
10621 the compiler options used during generation.
10624 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
10625 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
10627 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
10628 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
10631 2) iASL Compiler/Disassembler:
10633 Fixed typechecking for the ObjectType and SizeOf operators. Problem was
10634 recently introduced in 20041119.
10636 Fixed a problem with the ToUUID macro where the upper nybble of each
10638 byte was inadvertently set to zero.
10640 ----------------------------------------
10641 19 November 2004. Summary of changes for version 20041119:
10643 1) ACPI CA Core Subsystem:
10645 Fixed a problem in the internal ConvertToInteger routine where new
10647 were not truncated to 32 bits for 32-bit ACPI tables. This routine
10649 buffers and strings to integers.
10651 Implemented support to store a value to an Index() on a String object.
10653 is an ACPI 2.0 feature that had not yet been implemented.
10655 Implemented new behavior for storing objects to individual package
10657 (via the Index() operator). The previous behavior was to invoke the
10659 conversion rules if an object was already present at the index. The new
10660 behavior is to simply delete any existing object and directly store the
10662 object. Although the ACPI specification seems unclear on this subject,
10664 ACPI implementations behave in this manner. (This is the root of the
10665 AE_BAD_HEX_CONSTANT issue.)
10667 Modified the RSDP memory scan mechanism to support the extended checksum
10669 ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid
10670 RSDP signature is found with a valid checksum.
10672 Code and Data Size: Current and previous core subsystem library sizes are
10673 shown below. These are the code and data sizes for the acpica.lib
10675 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10676 any ACPI driver or OSPM code. The debug version of the code includes the
10677 debug output trace mechanism and has a much larger code and data size.
10679 that these values will vary depending on the efficiency of the compiler
10681 the compiler options used during generation.
10684 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
10685 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
10687 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
10688 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
10691 2) iASL Compiler/Disassembler:
10693 Fixed a missing semicolon in the aslcompiler.y file.
10695 ----------------------------------------
10696 05 November 2004. Summary of changes for version 20041105:
10698 1) ACPI CA Core Subsystem:
10700 Implemented support for FADT revision 2. This was an interim table
10702 ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register.
10704 Implemented optional support to allow uninitialized LocalX and ArgX
10705 variables in a control method. The variables are initialized to an
10707 object with a value of zero. This support is enabled by setting the
10708 AcpiGbl_EnableInterpreterSlack flag to TRUE.
10710 Implemented support for Integer objects for the SizeOf operator. Either
10712 or 8 is returned, depending on the current integer size (32-bit or 64-
10714 depending on the parent table revision).
10716 Fixed a problem in the implementation of the SizeOf and ObjectType
10718 where the operand was resolved to a value too early, causing incorrect
10719 return values for some objects.
10721 Fixed some possible memory leaks during exceptional conditions.
10723 Code and Data Size: Current and previous core subsystem library sizes are
10724 shown below. These are the code and data sizes for the acpica.lib
10726 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10727 any ACPI driver or OSPM code. The debug version of the code includes the
10728 debug output trace mechanism and has a much larger code and data size.
10730 that these values will vary depending on the efficiency of the compiler
10732 the compiler options used during generation.
10735 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
10736 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
10738 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
10739 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
10742 2) iASL Compiler/Disassembler:
10744 Implemented support for all ACPI 3.0 reserved names and methods.
10746 Implemented all ACPI 3.0 grammar elements in the front-end, including
10747 support for semicolons.
10749 Implemented the ACPI 3.0 Function() and ToUUID() macros
10751 Fixed a problem in the disassembler where a Scope() operator would not be
10752 emitted properly if the target of the scope was in another table.
10754 ----------------------------------------
10755 15 October 2004. Summary of changes for version 20041015:
10757 Note: ACPI CA is currently undergoing an in-depth and complete formal
10758 evaluation to test/verify the following areas. Other suggestions are
10759 welcome. This will result in an increase in the frequency of releases and
10760 the number of bug fixes in the next few months.
10761 - Functional tests for all ASL/AML operators
10762 - All implicit/explicit type conversions
10763 - Bit fields and operation regions
10764 - 64-bit math support and 32-bit-only "truncated" math support
10765 - Exceptional conditions, both compiler and interpreter
10766 - Dynamic object deletion and memory leaks
10767 - ACPI 3.0 support when implemented
10768 - External interfaces to the ACPI subsystem
10771 1) ACPI CA Core Subsystem:
10773 Fixed two alignment issues on 64-bit platforms - within debug statements
10775 AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the
10777 field within the non-aligned ACPI generic address structure.
10779 Fixed a problem in the Increment and Decrement operators where incorrect
10780 operand resolution could result in the inadvertent modification of the
10781 original integer when the integer is passed into another method as an
10782 argument and the arg is then incremented/decremented.
10784 Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-
10786 BCD number were truncated during conversion.
10788 Fixed a problem in the ToDecimal operator where the length of the
10790 string could be set incorrectly too long if the input operand was a
10794 Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte
10796 within a buffer would prematurely terminate a compare between buffer
10799 Added a check for string overflow (>200 characters as per the ACPI
10800 specification) during the Concatenate operator with two string operands.
10802 Code and Data Size: Current and previous core subsystem library sizes are
10803 shown below. These are the code and data sizes for the acpica.lib
10805 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10806 any ACPI driver or OSPM code. The debug version of the code includes the
10807 debug output trace mechanism and has a much larger code and data size.
10809 that these values will vary depending on the efficiency of the compiler
10811 the compiler options used during generation.
10814 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
10815 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
10817 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
10818 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
10822 2) iASL Compiler/Disassembler:
10824 Allow the use of the ObjectType operator on uninitialized Locals and Args
10825 (returns 0 as per the ACPI specification).
10827 Fixed a problem where the compiler would fault if there was a syntax
10829 in the FieldName of all of the various CreateXXXField operators.
10831 Disallow the use of lower case letters within the EISAID macro, as per
10833 ACPI specification. All EISAID strings must be of the form "UUUNNNN"
10835 U is an uppercase letter and N is a hex digit.
10838 ----------------------------------------
10839 06 October 2004. Summary of changes for version 20041006:
10841 1) ACPI CA Core Subsystem:
10843 Implemented support for the ACPI 3.0 Timer operator. This ASL function
10844 implements a 64-bit timer with 100 nanosecond granularity.
10846 Defined a new OSL interface, AcpiOsGetTimer. This interface is used to
10847 implement the ACPI 3.0 Timer operator. This allows the host OS to
10849 the timer with the best clock available. Also, it keeps the core
10851 out of the clock handling business, since the host OS (usually) performs
10854 Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write)
10855 functions use a 64-bit address which is part of the packed ACPI Generic
10856 Address Structure. Since the structure is non-aligned, the alignment
10858 are now used to extract the address to a local variable before use.
10860 Fixed a problem where the ToInteger operator assumed all input strings
10862 hexadecimal. The operator now handles both decimal strings and hex
10864 (prefixed with "0x").
10866 Fixed a problem where the string length in the string object created as a
10867 result of the internal ConvertToString procedure could be incorrect. This
10868 potentially affected all implicit conversions and also the
10870 and ToHexString operators.
10872 Fixed two problems in the ToString operator. If the length parameter was
10873 zero, an incorrect string object was created and the value of the input
10874 length parameter was inadvertently changed from zero to Ones.
10876 Fixed a problem where the optional ResourceSource string in the
10878 resource macro was ignored.
10880 Simplified the interfaces to the internal division functions, reducing
10882 size and complexity.
10884 Code and Data Size: Current and previous core subsystem library sizes are
10885 shown below. These are the code and data sizes for the acpica.lib
10887 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10888 any ACPI driver or OSPM code. The debug version of the code includes the
10889 debug output trace mechanism and has a much larger code and data size.
10891 that these values will vary depending on the efficiency of the compiler
10893 the compiler options used during generation.
10896 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
10897 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
10899 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
10900 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
10903 2) iASL Compiler/Disassembler:
10905 Implemented support for the ACPI 3.0 Timer operator.
10907 Fixed a problem where the Default() operator was inadvertently ignored in
10909 Switch/Case block. This was a problem in the translation of the Switch
10910 statement to If...Else pairs.
10912 Added support to allow a standalone Return operator, with no parentheses
10916 Fixed a problem with code generation for the ElseIf operator where the
10917 translated Else...If parse tree was improperly constructed leading to the
10920 ----------------------------------------
10921 22 September 2004. Summary of changes for version 20040922:
10923 1) ACPI CA Core Subsystem:
10925 Fixed a problem with the implementation of the LNot() operator where
10927 was not returned for the TRUE case. Changed the code to return Ones
10929 of (!Arg) which was usually 1. This change affects iASL constant folding
10931 this operator also.
10933 Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was
10935 initialized properly -- Now zero the entire buffer in this case where the
10936 buffer already exists.
10938 Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32
10939 Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all
10940 related code considerably. This will require changes/updates to all OS
10941 interface layers (OSLs.)
10943 Implemented a new external interface, AcpiInstallExceptionHandler, to
10945 a system exception handler to be installed. This handler is invoked upon
10947 run-time exception that occurs during control method execution.
10949 Added support for the DSDT in AcpiTbFindTable. This allows the
10950 DataTableRegion() operator to access the local copy of the DSDT.
10952 Code and Data Size: Current and previous core subsystem library sizes are
10953 shown below. These are the code and data sizes for the acpica.lib
10955 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10956 any ACPI driver or OSPM code. The debug version of the code includes the
10957 debug output trace mechanism and has a much larger code and data size.
10959 that these values will vary depending on the efficiency of the compiler
10961 the compiler options used during generation.
10964 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
10965 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
10967 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
10968 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
10971 2) iASL Compiler/Disassembler:
10973 Fixed a problem with constant folding and the LNot operator. LNot was
10974 returning 1 in the TRUE case, not Ones as per the ACPI specification.
10976 could result in the generation of an incorrect folded/reduced constant.
10978 End-Of-File is now allowed within a "//"-style comment. A parse error no
10979 longer occurs if such a comment is at the very end of the input ASL
10983 Implemented the "-r" option to override the Revision in the table header.
10984 The initial use of this option will be to simplify the evaluation of the
10986 interpreter by allowing a single ASL source module to be compiled for
10988 32-bit or 64-bit integers.
10991 ----------------------------------------
10992 27 August 2004. Summary of changes for version 20040827:
10994 1) ACPI CA Core Subsystem:
10996 - Implemented support for implicit object conversion in the non-numeric
10997 logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual,
10999 LNotEqual.) Any combination of Integers/Strings/Buffers may now be used;
11000 the second operand is implicitly converted on the fly to match the type
11002 the first operand. For example:
11004 LEqual (Source1, Source2)
11006 Source1 and Source2 must each evaluate to an integer, a string, or a
11008 The data type of Source1 dictates the required type of Source2. Source2
11010 implicitly converted if necessary to match the type of Source1.
11012 - Updated and corrected the behavior of the string conversion support.
11014 rules concerning conversion of buffers to strings (according to the ACPI
11015 specification) are as follows:
11017 ToDecimalString - explicit byte-wise conversion of buffer to string of
11018 decimal values (0-255) separated by commas. ToHexString - explicit byte-
11020 conversion of buffer to string of hex values (0-FF) separated by commas.
11021 ToString - explicit byte-wise conversion of buffer to string. Byte-by-
11023 copy with no transform except NULL terminated. Any other implicit buffer-
11025 string conversion - byte-wise conversion of buffer to string of hex
11027 (0-FF) separated by spaces.
11029 - Fixed typo in definition of AcpiGbl_EnableInterpreterSlack.
11031 - Fixed a problem in AcpiNsGetPathnameLength where the returned length
11033 one byte too short in the case of a node in the root scope. This could
11034 cause a fault during debug output.
11036 - Code and Data Size: Current and previous core subsystem library sizes
11038 shown below. These are the code and data sizes for the acpica.lib
11040 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11041 any ACPI driver or OSPM code. The debug version of the code includes the
11042 debug output trace mechanism and has a much larger code and data size.
11044 that these values will vary depending on the efficiency of the compiler
11046 the compiler options used during generation.
11049 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
11050 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
11052 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
11053 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
11056 2) iASL Compiler/Disassembler:
11058 - Fixed a Linux generation error.
11061 ----------------------------------------
11062 16 August 2004. Summary of changes for version 20040816:
11064 1) ACPI CA Core Subsystem:
11066 Designed and implemented support within the AML interpreter for the so-
11067 called "implicit return". This support returns the result of the last
11069 operation within a control method, in the absence of an explicit Return()
11070 operator. A few machines depend on this behavior, even though it is not
11071 explicitly supported by the ASL language. It is optional support that
11073 be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag.
11075 Removed support for the PCI_Config address space from the internal low
11077 hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This
11078 support was not used internally, and would not work correctly anyway
11080 the PCI bus number and segment number were not supported. There are
11081 separate interfaces for PCI configuration space access because of the
11085 Code and Data Size: Current and previous core subsystem library sizes are
11086 shown below. These are the code and data sizes for the acpica.lib
11088 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11089 any ACPI driver or OSPM code. The debug version of the code includes the
11090 debug output trace mechanism and has a much larger code and data size.
11092 that these values will vary depending on the efficiency of the compiler
11094 the compiler options used during generation.
11097 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
11098 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
11100 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
11101 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
11104 2) iASL Compiler/Disassembler:
11106 Fixed a problem where constants in ASL expressions at the root level (not
11107 within a control method) could be inadvertently truncated during code
11108 generation. This problem was introduced in the 20040715 release.
11111 ----------------------------------------
11112 15 July 2004. Summary of changes for version 20040715:
11114 1) ACPI CA Core Subsystem:
11116 Restructured the internal HW GPE interfaces to pass/track the current
11118 of interrupts (enabled/disabled) in order to avoid possible deadlock and
11119 increase flexibility of the interfaces.
11121 Implemented a "lexicographical compare" for String and Buffer objects
11123 the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -
11125 as per further clarification to the ACPI specification. Behavior is
11127 to C library "strcmp".
11129 Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable
11130 external function. In the 32-bit non-debug case, the stack use has been
11131 reduced from 168 bytes to 32 bytes.
11133 Deployed a new run-time configuration flag,
11134 AcpiGbl_EnableInterpreterSlack,
11135 whose purpose is to allow the AML interpreter to forgive certain bad AML
11136 constructs. Default setting is FALSE.
11138 Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field
11140 support code. If enabled, it allows field access to go beyond the end of
11142 region definition if the field is within the region length rounded up to
11144 next access width boundary (a common coding error.)
11146 Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to
11147 ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also,
11149 symbols are lowercased by the latest version of the AcpiSrc tool.
11151 The prototypes for the PCI interfaces in acpiosxf.h have been updated to
11152 rename "Register" to simply "Reg" to prevent certain compilers from
11155 Code and Data Size: Current and previous core subsystem library sizes are
11156 shown below. These are the code and data sizes for the acpica.lib
11158 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11159 any ACPI driver or OSPM code. The debug version of the code includes the
11160 debug output trace mechanism and has a much larger code and data size.
11162 that these values will vary depending on the efficiency of the compiler
11164 the compiler options used during generation.
11167 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
11168 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
11170 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
11171 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
11174 2) iASL Compiler/Disassembler:
11176 Implemented full support for Package objects within the Case() operator.
11177 Note: The Break() operator is currently not supported within Case blocks
11178 (TermLists) as there is some question about backward compatibility with
11183 Fixed a problem where complex terms were not supported properly within
11187 Eliminated extraneous warning for compiler-emitted reserved names of the
11188 form "_T_x". (Used in Switch/Case operators.)
11190 Eliminated optimization messages for "_T_x" objects and small constants
11191 within the DefinitionBlock operator.
11194 ----------------------------------------
11195 15 June 2004. Summary of changes for version 20040615:
11197 1) ACPI CA Core Subsystem:
11199 Implemented support for Buffer and String objects (as per ACPI 2.0) for
11201 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
11204 All directory names in the entire source package are lower case, as they
11205 were in earlier releases.
11207 Implemented "Disassemble" command in the AML debugger that will
11209 a single control method.
11211 Code and Data Size: Current and previous core subsystem library sizes are
11212 shown below. These are the code and data sizes for the acpica.lib
11214 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11215 any ACPI driver or OSPM code. The debug version of the code includes the
11216 debug output trace mechanism and has a much larger code and data size.
11218 that these values will vary depending on the efficiency of the compiler
11220 the compiler options used during generation.
11223 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
11224 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
11227 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
11228 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
11231 2) iASL Compiler/Disassembler:
11233 Implemented support for Buffer and String objects (as per ACPI 2.0) for
11235 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
11238 All directory names in the entire source package are lower case, as they
11239 were in earlier releases.
11241 Fixed a fault when using the -g or -d<nofilename> options if the FADT was
11244 Fixed an issue with the Windows version of the compiler where later
11246 of Windows place the FADT in the registry under the name "FADT" and not
11247 "FACP" as earlier versions did. This applies when using the -g or -
11248 d<nofilename> options. The compiler now looks for both strings as
11251 Fixed a problem with compiler namepath optimization where a namepath
11253 the Scope() operator could not be optimized if the namepath was a subpath
11255 the current scope path.
11257 ----------------------------------------
11258 27 May 2004. Summary of changes for version 20040527:
11260 1) ACPI CA Core Subsystem:
11262 Completed a new design and implementation for EBDA (Extended BIOS Data
11264 support in the RSDP scan code. The original code improperly scanned for
11266 EBDA by simply scanning from memory location 0 to 0x400. The correct
11268 is to first obtain the EBDA pointer from within the BIOS data area, then
11269 scan 1K of memory starting at the EBDA pointer. There appear to be few
11271 any machines that place the RSDP in the EBDA, however.
11273 Integrated a fix for a possible fault during evaluation of BufferField
11274 arguments. Obsolete code that was causing the problem was removed.
11276 Found and fixed a problem in the Field Support Code where data could be
11277 corrupted on a bit field read that starts on an aligned boundary but does
11278 not end on an aligned boundary. Merged the read/write "datum length"
11279 calculation code into a common procedure.
11281 Rolled in a couple of changes to the FreeBSD-specific header.
11284 Code and Data Size: Current and previous core subsystem library sizes are
11285 shown below. These are the code and data sizes for the acpica.lib
11287 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11288 any ACPI driver or OSPM code. The debug version of the code includes the
11289 debug output trace mechanism and has a much larger code and data size.
11291 that these values will vary depending on the efficiency of the compiler
11293 the compiler options used during generation.
11296 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
11297 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
11299 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
11300 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
11303 2) iASL Compiler/Disassembler:
11305 Fixed a generation warning produced by some overly-verbose compilers for
11309 ----------------------------------------
11310 14 May 2004. Summary of changes for version 20040514:
11312 1) ACPI CA Core Subsystem:
11314 Fixed a problem where hardware GPE enable bits sometimes not set properly
11315 during and after GPE method execution. Result of 04/27 changes.
11317 Removed extra "clear all GPEs" when sleeping/waking.
11319 Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single
11320 AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above
11322 the new AcpiEv* calls as appropriate.
11324 ACPI_OS_NAME was removed from the OS-specific headers. The default name
11326 now "Microsoft Windows NT" for maximum compatibility. However this can
11328 changed by modifying the acconfig.h file.
11330 Allow a single invocation of AcpiInstallNotifyHandler for a handler that
11331 traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag.
11333 Run _INI methods on ThermalZone objects. This is against the ACPI
11334 specification, but there is apparently ASL code in the field that has
11336 _INI methods, and apparently "other" AML interpreters execute them.
11338 Performed a full 16/32/64 bit lint that resulted in some small changes.
11340 Added a sleep simulation command to the AML debugger to test sleep code.
11342 Code and Data Size: Current and previous core subsystem library sizes are
11343 shown below. These are the code and data sizes for the acpica.lib
11345 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11346 any ACPI driver or OSPM code. The debug version of the code includes the
11347 debug output trace mechanism and has a much larger code and data size.
11349 that these values will vary depending on the efficiency of the compiler
11351 the compiler options used during generation.
11354 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
11355 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
11357 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
11358 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
11360 ----------------------------------------
11361 27 April 2004. Summary of changes for version 20040427:
11363 1) ACPI CA Core Subsystem:
11365 Completed a major overhaul of the GPE handling within ACPI CA. There are
11366 now three types of GPEs: wake-only, runtime-only, and combination
11368 The only GPEs allowed to be combination wake/run are for button-style
11369 devices such as a control-method power button, control-method sleep
11371 or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are
11373 referenced by any _PRW methods are marked for "runtime" and hardware
11374 enabled. Any GPE that is referenced by a _PRW method is marked for
11376 (and disabled at runtime). However, at sleep time, only those GPEs that
11377 have been specifically enabled for wake via the AcpiEnableGpe interface
11379 actually be hardware enabled.
11381 A new external interface has been added, AcpiSetGpeType(), that is meant
11383 be used by device drivers to force a GPE to a particular type. It will
11385 especially useful for the drivers for the button devices mentioned above.
11387 Completed restructuring of the ACPI CA initialization sequence so that
11388 default operation region handlers are installed before GPEs are
11390 and the _PRW methods are executed. This will prevent errors when the
11392 methods attempt to access system memory or I/O space.
11394 GPE enable/disable no longer reads the GPE enable register. We now keep
11396 enable info for runtime and wake separate and in the GPE_EVENT_INFO. We
11397 thus no longer depend on the hardware to maintain these bits.
11399 Always clear the wake status and fixed/GPE status bits before sleep, even
11402 Improved the AML debugger output for displaying the GPE blocks and their
11405 Added new strings for the _OSI method, of the form "Windows 2001 SPx"
11409 Fixed a problem where the physical address was incorrectly calculated
11411 the Load() operator was used to directly load from an Operation Region
11413 loading from a Field object.) Also added check for minimum table length
11417 Fix for multiple mutex acquisition. Restore original thread SyncLevel on
11420 Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for
11421 consistency with the other fields returned.
11423 Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such
11424 structure for each GPE in the system, so the size of this structure is
11427 CPU stack requirement reduction: Cleaned up the method execution and
11429 evaluation paths so that now a parameter structure is passed, instead of
11430 copying the various method parameters over and over again.
11432 In evregion.c: Correctly exit and reenter the interpreter region if and
11433 only if dispatching an operation region request to a user-installed
11435 Do not exit/reenter when dispatching to a default handler (e.g., default
11436 system memory or I/O handlers)
11439 Notes for updating drivers for the new GPE support. The following
11441 must be made to ACPI-related device drivers that are attached to one or
11443 GPEs: (This information will be added to the ACPI CA Programmer
11446 1) AcpiInstallGpeHandler no longer automatically enables the GPE, you
11448 explicitly call AcpiEnableGpe.
11449 2) There is a new interface called AcpiSetGpeType. This should be called
11450 before enabling the GPE. Also, this interface will automatically disable
11451 the GPE if it is currently enabled.
11452 3) AcpiEnableGpe no longer supports a GPE type flag.
11454 Specific drivers that must be changed:
11456 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED,
11457 AeGpeHandler, NULL);
11458 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME);
11459 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR);
11461 2) Button Drivers (Power, Lid, Sleep):
11462 Run _PRW method under parent device
11463 If _PRW exists: /* This is a control-method button */
11464 Extract GPE number and possibly GpeDevice
11465 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN);
11466 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR);
11468 For all other devices that have _PRWs, we automatically set the GPE type
11470 ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled.
11472 must be done on a selective basis, usually requiring some kind of user
11474 to allow the user to pick the wake devices.
11477 Code and Data Size: Current and previous core subsystem library sizes are
11478 shown below. These are the code and data sizes for the acpica.lib
11480 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11481 any ACPI driver or OSPM code. The debug version of the code includes the
11482 debug output trace mechanism and has a much larger code and data size.
11484 that these values will vary depending on the efficiency of the compiler
11486 the compiler options used during generation.
11489 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
11490 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
11493 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
11494 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
11498 ----------------------------------------
11499 02 April 2004. Summary of changes for version 20040402:
11501 1) ACPI CA Core Subsystem:
11503 Fixed an interpreter problem where an indirect store through an ArgX
11504 parameter was incorrectly applying the "implicit conversion rules" during
11505 the store. From the ACPI specification: "If the target is a method local
11507 argument (LocalX or ArgX), no conversion is performed and the result is
11508 stored directly to the target". The new behavior is to disable implicit
11509 conversion during ALL stores to an ArgX.
11511 Changed the behavior of the _PRW method scan to ignore any and all errors
11512 returned by a given _PRW. This prevents the scan from aborting from the
11513 failure of any single _PRW.
11515 Moved the runtime configuration parameters from the global init procedure
11517 static variables in acglobal.h. This will allow the host to override the
11518 default values easily.
11520 Code and Data Size: Current and previous core subsystem library sizes are
11521 shown below. These are the code and data sizes for the acpica.lib
11523 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11524 any ACPI driver or OSPM code. The debug version of the code includes the
11525 debug output trace mechanism and has a much larger code and data size.
11527 that these values will vary depending on the efficiency of the compiler
11529 the compiler options used during generation.
11532 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
11533 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
11535 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
11536 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
11539 2) iASL Compiler/Disassembler:
11541 iASL now fully disassembles SSDTs. However, External() statements are
11543 generated automatically for unresolved symbols at this time. This is a
11544 planned feature for future implementation.
11546 Fixed a scoping problem in the disassembler that occurs when the type of
11548 target of a Scope() operator is overridden. This problem caused an
11549 incorrectly nested internal namespace to be constructed.
11551 Any warnings or errors that are emitted during disassembly are now
11553 out automatically so that the resulting file can be recompiled without
11557 ----------------------------------------
11558 26 March 2004. Summary of changes for version 20040326:
11560 1) ACPI CA Core Subsystem:
11562 Implemented support for "wake" GPEs via interaction between GPEs and the
11563 _PRW methods. Every GPE that is pointed to by one or more _PRWs is
11564 identified as a WAKE GPE and by default will no longer be enabled at
11565 runtime. Previously, we were blindly enabling all GPEs with a
11567 _Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway.
11569 believe this has been the cause of thousands of "spurious" GPEs on some
11572 This new GPE behavior is can be reverted to the original behavior (enable
11573 ALL GPEs at runtime) via a runtime flag.
11575 Fixed a problem where aliased control methods could not access objects
11576 properly. The proper scope within the namespace was not initialized
11577 (transferred to the target of the aliased method) before executing the
11580 Fixed a potential race condition on internal object deletion on the
11582 object in AcpiEvaluateObject.
11584 Integrated a fix for resource descriptors where both _MEM and _MTP were
11585 being extracted instead of just _MEM. (i.e. bitmask was incorrectly too
11586 wide, 0x0F instead of 0x03.)
11588 Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName,
11591 fault in some cases.
11593 Updated Notify() values for debug statements in evmisc.c
11595 Return proper status from AcpiUtMutexInitialize, not just simply AE_OK.
11597 Code and Data Size: Current and previous core subsystem library sizes are
11598 shown below. These are the code and data sizes for the acpica.lib
11600 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11601 any ACPI driver or OSPM code. The debug version of the code includes the
11602 debug output trace mechanism and has a much larger code and data size.
11604 that these values will vary depending on the efficiency of the compiler
11606 the compiler options used during generation.
11610 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
11611 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
11613 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
11614 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
11616 ----------------------------------------
11617 11 March 2004. Summary of changes for version 20040311:
11619 1) ACPI CA Core Subsystem:
11621 Fixed a problem where errors occurring during the parse phase of control
11622 method execution did not abort cleanly. For example, objects created and
11623 installed in the namespace were not deleted. This caused all subsequent
11624 invocations of the method to return the AE_ALREADY_EXISTS exception.
11626 Implemented a mechanism to force a control method to "Serialized"
11628 if the method attempts to create namespace objects. (The root of the
11629 AE_ALREADY_EXISTS problem.)
11631 Implemented support for the predefined _OSI "internal" control method.
11632 Initial supported strings are "Linux", "Windows 2000", "Windows 2001",
11634 "Windows 2001.1", and can be easily upgraded for new strings as
11636 This feature will allow "other" operating systems to execute the fully
11637 tested, "Windows" code path through the ASL code
11639 Global Lock Support: Now allows multiple acquires and releases with any
11640 internal thread. Removed concept of "owning thread" for this special
11643 Fixed two functions that were inappropriately declaring large objects on
11645 CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage
11647 method execution considerably.
11649 Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the
11650 S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT.
11652 Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs
11653 defined on the machine.
11655 Implemented two runtime options: One to force all control method
11657 to "Serialized" to mimic Windows behavior, another to disable _OSI
11659 if it causes problems on a given machine.
11661 Code and Data Size: Current and previous core subsystem library sizes are
11662 shown below. These are the code and data sizes for the acpica.lib
11664 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11665 any ACPI driver or OSPM code. The debug version of the code includes the
11666 debug output trace mechanism and has a much larger code and data size.
11668 that these values will vary depending on the efficiency of the compiler
11670 the compiler options used during generation.
11673 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
11674 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
11676 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
11677 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
11679 2) iASL Compiler/Disassembler:
11681 Fixed an array size problem for FreeBSD that would cause the compiler to
11684 ----------------------------------------
11685 20 February 2004. Summary of changes for version 20040220:
11688 1) ACPI CA Core Subsystem:
11690 Implemented execution of _SxD methods for Device objects in the
11691 GetObjectInfo interface.
11693 Fixed calls to _SST method to pass the correct arguments.
11695 Added a call to _SST on wake to restore to "working" state.
11697 Check for End-Of-Buffer failure case in the WalkResources interface.
11699 Integrated fix for 64-bit alignment issue in acglobal.h by moving two
11700 structures to the beginning of the file.
11702 After wake, clear GPE status register(s) before enabling GPEs.
11704 After wake, clear/enable power button. (Perhaps we should clear/enable
11706 fixed events upon wake.)
11708 Fixed a couple of possible memory leaks in the Namespace manager.
11710 Integrated latest acnetbsd.h file.
11712 ----------------------------------------
11713 11 February 2004. Summary of changes for version 20040211:
11716 1) ACPI CA Core Subsystem:
11718 Completed investigation and implementation of the call-by-reference
11719 mechanism for control method arguments.
11721 Fixed a problem where a store of an object into an indexed package could
11722 fail if the store occurs within a different method than the method that
11723 created the package.
11725 Fixed a problem where the ToDecimal operator could return incorrect
11728 Fixed a problem where the CopyObject operator could fail on some of the
11730 obscure objects (e.g., Reference objects.)
11732 Improved the output of the Debug object to display buffer, package, and
11735 Fixed a problem where constructs of the form "RefOf (ArgX)" did not
11737 the expected result.
11739 Added permanent ACPI_REPORT_ERROR macros for all instances of the
11740 ACPI_AML_INTERNAL exception.
11742 Integrated latest version of acfreebsd.h
11744 ----------------------------------------
11745 16 January 2004. Summary of changes for version 20040116:
11747 The purpose of this release is primarily to update the copyright years in
11748 each module, thus causing a huge number of diffs. There are a few small
11749 functional changes, however.
11751 1) ACPI CA Core Subsystem:
11753 Improved error messages when there is a problem finding one or more of
11755 required base ACPI tables
11757 Reintroduced the definition of APIC_HEADER in actbl.h
11759 Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h)
11761 Removed extraneous reference to NewObj in dsmthdat.c
11765 Fixed a problem introduced in December that disabled the correct
11767 of Resource Templates
11770 ----------------------------------------
11771 03 December 2003. Summary of changes for version 20031203:
11773 1) ACPI CA Core Subsystem:
11775 Changed the initialization of Operation Regions during subsystem
11776 init to perform two entire walks of the ACPI namespace; The first
11777 to initialize the regions themselves, the second to execute the
11778 _REG methods. This fixed some interdependencies across _REG
11779 methods found on some machines.
11781 Fixed a problem where a Store(Local0, Local1) could simply update
11782 the object reference count, and not create a new copy of the
11783 object if the Local1 is uninitialized.
11785 Implemented support for the _SST reserved method during sleep
11788 Implemented support to clear the SLP_TYP and SLP_EN bits when
11789 waking up, this is apparently required by some machines.
11791 When sleeping, clear the wake status only if SleepState is not S5.
11793 Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect
11794 pointer arithmetic advanced a string pointer too far.
11796 Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer
11797 could be returned if the requested table has not been loaded.
11799 Within the support for IRQ resources, restructured the handling of
11800 the active and edge/level bits.
11802 Fixed a few problems in AcpiPsxExecute() where memory could be
11803 leaked under certain error conditions.
11805 Improved error messages for the cases where the ACPI mode could
11808 Code and Data Size: Current and previous core subsystem library
11809 sizes are shown below. These are the code and data sizes for the
11810 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
11811 these values do not include any ACPI driver or OSPM code. The
11812 debug version of the code includes the debug output trace
11813 mechanism and has a much larger code and data size. Note that
11814 these values will vary depending on the efficiency of the compiler
11815 and the compiler options used during generation.
11817 Previous Release (20031029):
11818 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
11819 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
11821 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
11822 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
11824 2) iASL Compiler/Disassembler:
11826 Implemented a fix for the iASL disassembler where a bad index was
11827 generated. This was most noticeable on 64-bit platforms
11830 ----------------------------------------
11831 29 October 2003. Summary of changes for version 20031029:
11833 1) ACPI CA Core Subsystem:
11836 Fixed a problem where a level-triggered GPE with an associated
11837 _Lxx control method was incorrectly cleared twice.
11839 Fixed a problem with the Field support code where an access can
11840 occur beyond the end-of-region if the field is non-aligned but
11841 extends to the very end of the parent region (resulted in an
11842 AE_AML_REGION_LIMIT exception.)
11844 Fixed a problem with ACPI Fixed Events where an RT Clock handler
11845 would not get invoked on an RTC event. The RTC event bitmasks for
11846 the PM1 registers were not being initialized properly.
11848 Implemented support for executing _STA and _INI methods for
11849 Processor objects. Although this is currently not part of the
11850 ACPI specification, there is existing ASL code that depends on the
11851 init-time execution of these methods.
11853 Implemented and deployed a GetDescriptorName function to decode
11854 the various types of internal descriptors. Guards against null
11855 descriptors during debug output also.
11857 Implemented and deployed a GetNodeName function to extract the 4-
11858 character namespace node name. This function simplifies the debug
11859 and error output, as well as guarding against null pointers during
11862 Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to
11863 simplify the debug and error output of 64-bit integers. This
11864 macro replaces the HIDWORD and LODWORD macros for dumping these
11867 Updated the implementation of the Stall() operator to only call
11868 AcpiOsStall(), and also return an error if the operand is larger
11869 than 255. This preserves the required behavior of not
11870 relinquishing the processor, as would happen if AcpiOsSleep() was
11871 called for "long stalls".
11873 Constructs of the form "Store(LocalX,LocalX)" where LocalX is not
11874 initialized are now treated as NOOPs.
11876 Cleaned up a handful of warnings during 64-bit generation.
11878 Fixed a reported error where and incorrect GPE number was passed
11879 to the GPE dispatch handler. This value is only used for error
11880 output, however. Used this opportunity to clean up and streamline
11881 the GPE dispatch code.
11883 Code and Data Size: Current and previous core subsystem library
11884 sizes are shown below. These are the code and data sizes for the
11885 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
11886 these values do not include any ACPI driver or OSPM code. The
11888 debug version of the code includes the debug output trace
11889 mechanism and has a much larger code and data size. Note that
11890 these values will vary depending on the efficiency of the compiler
11891 and the compiler options used during generation.
11893 Previous Release (20031002):
11894 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
11895 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
11897 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
11898 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
11901 2) iASL Compiler/Disassembler:
11903 Updated the iASL compiler to return an error if the operand to the
11904 Stall() operator is larger than 255.
11907 ----------------------------------------
11908 02 October 2003. Summary of changes for version 20031002:
11911 1) ACPI CA Core Subsystem:
11913 Fixed a problem with Index Fields where the index was not
11914 incremented for fields that require multiple writes to the
11915 index/data registers (Fields that are wider than the data
11918 Fixed a problem with all Field objects where a write could go
11919 beyond the end-of-field if the field was larger than the access
11920 granularity and therefore required multiple writes to complete the
11921 request. An extra write beyond the end of the field could happen
11924 Fixed a problem with Index Fields where a BUFFER_OVERFLOW error
11925 would incorrectly be returned if the width of the Data Register
11926 was larger than the specified field access width.
11928 Completed fixes for LoadTable() and Unload() and verified their
11929 operation. Implemented full support for the "DdbHandle" object
11930 throughout the ACPI CA subsystem.
11932 Implemented full support for the MADT and ECDT tables in the ACPI
11933 CA header files. Even though these tables are not directly
11934 consumed by ACPI CA, the header definitions are useful for ACPI
11937 Integrated resource descriptor fixes posted to the Linux ACPI
11938 list. This included checks for minimum descriptor length, and
11939 support for trailing NULL strings within descriptors that have
11940 optional string elements.
11942 Code and Data Size: Current and previous core subsystem library
11943 sizes are shown below. These are the code and data sizes for the
11944 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
11945 these values do not include any ACPI driver or OSPM code. The
11946 debug version of the code includes the debug output trace
11947 mechanism and has a much larger code and data size. Note that
11948 these values will vary depending on the efficiency of the compiler
11949 and the compiler options used during generation.
11951 Previous Release (20030918):
11952 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
11953 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
11955 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
11956 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
11961 Implemented detection of non-ASCII characters within the input
11962 source ASL file. This catches attempts to compile binary (AML)
11963 files early in the compile, with an informative error message.
11965 Fixed a problem where the disassembler would fault if the output
11966 filename could not be generated or if the output file could not be
11969 ----------------------------------------
11970 18 September 2003. Summary of changes for version 20030918:
11973 1) ACPI CA Core Subsystem:
11975 Found and fixed a longstanding problem with the late execution of
11976 the various deferred AML opcodes (such as Operation Regions,
11977 Buffer Fields, Buffers, and Packages). If the name string
11978 specified for the name of the new object placed the object in a
11979 scope other than the current scope, the initialization/execution
11980 of the opcode failed. The solution to this problem was to
11981 implement a mechanism where the late execution of such opcodes
11982 does not attempt to lookup/create the name a second time in an
11983 incorrect scope. This fixes the "region size computed
11984 incorrectly" problem.
11986 Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a
11987 Global Lock AE_BAD_PARAMETER error.
11989 Fixed several 64-bit issues with prototypes, casting and data
11992 Removed duplicate prototype from acdisasm.h
11994 Fixed an issue involving EC Operation Region Detach (Shaohua Li)
11996 Code and Data Size: Current and previous core subsystem library
11997 sizes are shown below. These are the code and data sizes for the
11998 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
11999 these values do not include any ACPI driver or OSPM code. The
12000 debug version of the code includes the debug output trace
12001 mechanism and has a much larger code and data size. Note that
12002 these values will vary depending on the efficiency of the compiler
12003 and the compiler options used during generation.
12007 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
12008 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
12010 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
12011 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
12016 Fixed the AcpiOsSleep implementation in osunixxf.c to pass the
12017 correct sleep time in seconds.
12019 ----------------------------------------
12020 14 July 2003. Summary of changes for version 20030619:
12022 1) ACPI CA Core Subsystem:
12024 Parse SSDTs in order discovered, as opposed to reverse order
12027 Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas
12034 Dynamically allocate SDT list (suggested by Andi Kleen)
12036 proc function return value cleanups (Andi Kleen)
12038 Correctly handle NMI watchdog during long stalls (Andrew Morton)
12040 Make it so acpismp=force works (reported by Andrew Morton)
12043 ----------------------------------------
12044 19 June 2003. Summary of changes for version 20030619:
12046 1) ACPI CA Core Subsystem:
12048 Fix To/FromBCD, eliminating the need for an arch-specific #define.
12050 Do not acquire a semaphore in the S5 shutdown path.
12052 Fix ex_digits_needed for 0. (Takayoshi Kochi)
12054 Fix sleep/stall code reversal. (Andi Kleen)
12056 Revert a change having to do with control method calling
12061 acpiphp update (Takayoshi Kochi)
12063 Export acpi_disabled for sonypi (Stelian Pop)
12065 Mention acpismp=force in config help
12067 Re-add acpitable.c and acpismp=force. This improves backwards
12069 compatibility and also cleans up the code to a significant degree.
12071 Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge)
12073 ----------------------------------------
12074 22 May 2003. Summary of changes for version 20030522:
12076 1) ACPI CA Core Subsystem:
12078 Found and fixed a reported problem where an AE_NOT_FOUND error
12079 occurred occasionally during _BST evaluation. This turned out to
12080 be an Owner ID allocation issue where a called method did not get
12081 a new ID assigned to it. Eventually, (after 64k calls), the Owner
12082 ID UINT16 would wraparound so that the ID would be the same as the
12083 caller's and the called method would delete the caller's
12086 Implemented extended error reporting for control methods that are
12087 aborted due to a run-time exception. Output includes the exact
12088 AML instruction that caused the method abort, a dump of the method
12089 locals and arguments at the time of the abort, and a trace of all
12090 nested control method calls.
12092 Modified the interpreter to allow the creation of buffers of zero
12093 length from the AML code. Implemented new code to ensure that no
12094 attempt is made to actually allocate a memory buffer (of length
12095 zero) - instead, a simple buffer object with a NULL buffer pointer
12096 and length zero is created. A warning is no longer issued when
12097 the AML attempts to create a zero-length buffer.
12099 Implemented a workaround for the "leading asterisk issue" in
12100 _HIDs, _UIDs, and _CIDs in the AML interpreter. One leading
12101 asterisk is automatically removed if present in any HID, UID, or
12102 CID strings. The iASL compiler will still flag this asterisk as
12105 Implemented full support for _CID methods that return a package of
12106 multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface
12107 now additionally returns a device _CID list if present. This
12108 required a change to the external interface in order to pass an
12109 ACPI_BUFFER object as a parameter since the _CID list is of
12112 Fixed a problem with the new AE_SAME_HANDLER exception where
12113 handler initialization code did not know about this exception.
12115 Code and Data Size: Current and previous core subsystem library
12116 sizes are shown below. These are the code and data sizes for the
12117 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
12118 these values do not include any ACPI driver or OSPM code. The
12119 debug version of the code includes the debug output trace
12120 mechanism and has a much larger code and data size. Note that
12121 these values will vary depending on the efficiency of the compiler
12122 and the compiler options used during generation.
12124 Previous Release (20030509):
12125 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
12126 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
12128 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
12129 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
12134 Fixed a bug in which we would reinitialize the ACPI interrupt
12135 after it was already working, thus disabling all ACPI and the IRQs
12136 for any other device sharing the interrupt. (Thanks to Stian
12139 Toshiba driver update (John Belmonte)
12141 Return only 0 or 1 for our interrupt handler status (Andrew
12147 Fixed a reported problem where multiple (nested) ElseIf()
12148 statements were not handled correctly by the compiler, resulting
12149 in incorrect warnings and incorrect AML code. This was a problem
12150 in both the ASL parser and the code generator.
12155 Added changes to existing interfaces, new exception codes, and new
12156 text concerning reference count object management versus garbage
12159 ----------------------------------------
12160 09 May 2003. Summary of changes for version 20030509.
12163 1) ACPI CA Core Subsystem:
12165 Changed the subsystem initialization sequence to hold off
12166 installation of address space handlers until the hardware has been
12167 initialized and the system has entered ACPI mode. This is because
12168 the installation of space handlers can cause _REG methods to be
12169 run. Previously, the _REG methods could potentially be run before
12170 ACPI mode was enabled.
12172 Fixed some memory leak issues related to address space handler and
12173 notify handler installation. There were some problems with the
12174 reference count mechanism caused by the fact that the handler
12175 objects are shared across several namespace objects.
12177 Fixed a reported problem where reference counts within the
12178 namespace were not properly updated when named objects created by
12179 method execution were deleted.
12181 Fixed a reported problem where multiple SSDTs caused a deletion
12182 issue during subsystem termination. Restructured the table data
12183 structures to simplify the linked lists and the related code.
12185 Fixed a problem where the table ID associated with secondary
12186 tables (SSDTs) was not being propagated into the namespace objects
12187 created by those tables. This would only present a problem for
12188 tables that are unloaded at run-time, however.
12190 Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE
12191 type as the length parameter (instead of UINT32).
12193 Solved a long-standing problem where an ALREADY_EXISTS error
12194 appears on various systems. This problem could happen when there
12195 are multiple PCI_Config operation regions under a single PCI root
12196 bus. This doesn't happen very frequently, but there are some
12197 systems that do this in the ASL.
12199 Fixed a reported problem where the internal DeleteNode function
12200 was incorrectly handling the case where a namespace node was the
12201 first in the parent's child list, and had additional peers (not
12202 the only child, but first in the list of children.)
12204 Code and Data Size: Current core subsystem library sizes are shown
12205 below. These are the code and data sizes for the acpica.lib
12206 produced by the Microsoft Visual C++ 6.0 compiler, and these
12207 values do not include any ACPI driver or OSPM code. The debug
12208 version of the code includes the debug output trace mechanism and
12209 has a much larger code and data size. Note that these values will
12210 vary depending on the efficiency of the compiler and the compiler
12211 options used during generation.
12214 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
12215 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
12217 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
12218 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
12223 Allow ":" in OS override string (Ducrot Bruno)
12225 Kobject fix (Greg KH)
12228 3 iASL Compiler/Disassembler:
12230 Fixed a problem in the generation of the C source code files (AML
12231 is emitted in C source statements for BIOS inclusion) where the
12232 Ascii dump that appears within a C comment at the end of each line
12233 could cause a compile time error if the AML sequence happens to
12234 have an open comment or close comment sequence embedded.
12237 ----------------------------------------
12238 24 April 2003. Summary of changes for version 20030424.
12241 1) ACPI CA Core Subsystem:
12243 Support for big-endian systems has been implemented. Most of the
12244 support has been invisibly added behind big-endian versions of the
12245 ACPI_MOVE_* macros.
12247 Fixed a problem in AcpiHwDisableGpeBlock() and
12248 AcpiHwClearGpeBlock() where an incorrect offset was passed to the
12249 low level hardware write routine. The offset parameter was
12250 actually eliminated from the low level read/write routines because
12251 they had become obsolete.
12253 Fixed a problem where a handler object was deleted twice during
12254 the removal of a fixed event handler.
12259 A fix for SMP systems with link devices was contributed by
12263 (2.5) Return whether we handled the interrupt in our IRQ handler.
12264 (Linux ISRs no longer return void, so we can propagate the handler
12265 return value from the ACPI CA core back to the OS.)
12271 The ACPI CA Programmer Reference has been updated to reflect new
12272 interfaces and changes to existing interfaces.
12274 ----------------------------------------
12275 28 March 2003. Summary of changes for version 20030328.
12277 1) ACPI CA Core Subsystem:
12279 The GPE Block Device support has been completed. New interfaces
12280 are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event
12281 interfaces (enable, disable, clear, getstatus) have been split
12282 into separate interfaces for Fixed Events and General Purpose
12283 Events (GPEs) in order to support GPE Block Devices properly.
12285 Fixed a problem where the error message "Failed to acquire
12286 semaphore" would appear during operations on the embedded
12289 Code and Data Size: Current core subsystem library sizes are shown
12290 below. These are the code and data sizes for the acpica.lib
12291 produced by the Microsoft Visual C++ 6.0 compiler, and these
12292 values do not include any ACPI driver or OSPM code. The debug
12293 version of the code includes the debug output trace mechanism and
12294 has a much larger code and data size. Note that these values will
12295 vary depending on the efficiency of the compiler and the compiler
12296 options used during generation.
12299 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
12300 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
12302 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
12303 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
12306 ----------------------------------------
12307 28 February 2003. Summary of changes for version 20030228.
12310 1) ACPI CA Core Subsystem:
12312 The GPE handling and dispatch code has been completely overhauled
12313 in preparation for support of GPE Block Devices (ID ACPI0006).
12314 This affects internal data structures and code only; there should
12315 be no differences visible externally. One new file has been
12318 The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only
12319 fields that are used to determine the GPE block lengths. The
12320 REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address
12321 structures are ignored. This is per the ACPI specification but it
12322 isn't very clear. The full 256 Block 0/1 GPEs are now supported
12323 (the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128).
12325 In the SCI interrupt handler, removed the read of the PM1_CONTROL
12326 register to look at the SCI_EN bit. On some machines, this read
12327 causes an SMI event and greatly slows down SCI events. (This may
12328 in fact be the cause of slow battery status response on some
12331 Fixed a problem where a store of a NULL string to a package object
12332 could cause the premature deletion of the object. This was seen
12333 during execution of the battery _BIF method on some systems,
12334 resulting in no battery data being returned.
12336 Added AcpiWalkResources interface to simplify parsing of resource
12339 Code and Data Size: Current core subsystem library sizes are shown
12340 below. These are the code and data sizes for the acpica.lib
12341 produced by the Microsoft Visual C++ 6.0 compiler, and these
12342 values do not include any ACPI driver or OSPM code. The debug
12343 version of the code includes the debug output trace mechanism and
12344 has a much larger code and data size. Note that these values will
12345 vary depending on the efficiency of the compiler and the compiler
12346 options used during generation.
12349 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
12350 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
12352 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
12353 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
12358 S3 fixes (Ole Rohne)
12360 Update ACPI PHP driver with to use new acpi_walk_resource API
12363 Add S4BIOS support (Pavel Machek)
12365 Map in entire table before performing checksum (John Stultz)
12367 Expand the mem= cmdline to allow the specification of reserved and
12368 ACPI DATA blocks (Pavel Machek)
12370 Never use ACPI on VISWS
12372 Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez)
12374 Revert a change that allowed P_BLK lengths to be 4 or 5. This is
12375 causing us to think that some systems support C2 when they really
12378 Do not count processor objects for non-present CPUs (Thanks to
12384 Fixed a problem where ASL include files could not be found and
12387 Added support for the _PDC reserved name.
12390 ----------------------------------------
12391 22 January 2003. Summary of changes for version 20030122.
12394 1) ACPI CA Core Subsystem:
12396 Added a check for constructs of the form: Store (Local0, Local0)
12397 where Local0 is not initialized. Apparently, some BIOS
12398 programmers believe that this is a NOOP. Since this store doesn't
12399 do anything anyway, the new prototype behavior will ignore this
12400 error. This is a case where we can relax the strict checking in
12401 the interpreter in the name of compatibility.
12406 The AcpiSrc Source Conversion Utility has been released with the
12407 Linux package for the first time. This is the utility that is
12408 used to convert the ACPI CA base source code to the Linux version.
12410 (Both) Handle P_BLK lengths shorter than 6 more gracefully
12412 (Both) Move more headers to include/acpi, and delete an unused
12415 (Both) Move drivers/acpi/include directory to include/acpi
12417 (Both) Boot functions don't use cmdline, so don't pass it around
12419 (Both) Remove include of unused header (Adrian Bunk)
12421 (Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since
12423 former now also includes the latter, acpiphp.h only needs the one,
12426 (2.5) Make it possible to select method of bios restoring after S3
12427 resume. [=> no more ugly ifdefs] (Pavel Machek)
12429 (2.5) Make proc write interfaces work (Pavel Machek)
12431 (2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski)
12433 (2.5) Break out ACPI Perf code into its own module, under cpufreq
12434 (Dominik Brodowski)
12436 (2.4) S4BIOS support (Ducrot Bruno)
12438 (2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio
12444 Added support to disassemble SSDT and PSDTs.
12446 Implemented support to obtain SSDTs from the Windows registry if
12450 ----------------------------------------
12451 09 January 2003. Summary of changes for version 20030109.
12453 1) ACPI CA Core Subsystem:
12455 Changed the behavior of the internal Buffer-to-String conversion
12456 function. The current ACPI specification states that the contents
12457 of the buffer are "converted to a string of two-character
12458 hexadecimal numbers, each separated by a space". Unfortunately,
12459 this definition is not backwards compatible with existing ACPI 1.0
12460 implementations (although the behavior was not defined in the ACPI
12461 1.0 specification). The new behavior simply copies data from the
12462 buffer to the string until a null character is found or the end of
12463 the buffer is reached. The new String object is always null
12464 terminated. This problem was seen during the generation of _BIF
12465 battery data where incorrect strings were returned for battery
12466 type, etc. This will also require an errata to the ACPI
12469 Renamed all instances of NATIVE_UINT and NATIVE_INT to
12470 ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively.
12472 Copyright in all module headers (both Linux and non-Linux) has be
12475 Code and Data Size: Current core subsystem library sizes are shown
12476 below. These are the code and data sizes for the acpica.lib
12477 produced by the Microsoft Visual C++ 6.0 compiler, and these
12478 values do not include any ACPI driver or OSPM code. The debug
12479 version of the code includes the debug output trace mechanism and
12480 has a much larger code and data size. Note that these values will
12481 vary depending on the efficiency of the compiler and the compiler
12482 options used during generation.
12485 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
12486 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
12488 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
12489 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
12494 Fixed an oops on module insertion/removal (Matthew Tippett)
12496 (2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante)
12498 (2.5) Replace pr_debug (Randy Dunlap)
12500 (2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski)
12502 (Both) Eliminate spawning of thread from timer callback, in favor
12505 (Both) Show Lid status in /proc (Zdenek OGAR Skalak)
12507 (Both) Added define for Fixed Function HW region (Matthew Wilcox)
12509 (Both) Add missing statics to button.c (Pavel Machek)
12511 Several changes have been made to the source code translation
12512 utility that generates the Linux Code in order to make the code
12515 All typedefs on structs and unions have been removed in keeping
12516 with the Linux coding style.
12518 Removed the non-Linux SourceSafe module revision number from each
12521 Completed major overhaul of symbols to be lowercased for linux.
12522 Doubled the number of symbols that are lowercased.
12524 Fixed a problem where identifiers within procedure headers and
12525 within quotes were not fully lower cased (they were left with a
12528 Some C macros whose only purpose is to allow the generation of 16-
12529 bit code are now completely removed in the Linux code, increasing
12530 readability and maintainability.
12532 ----------------------------------------
12534 12 December 2002. Summary of changes for version 20021212.
12537 1) ACPI CA Core Subsystem:
12539 Fixed a problem where the creation of a zero-length AML Buffer
12540 would cause a fault.
12542 Fixed a problem where a Buffer object that pointed to a static AML
12543 buffer (in an ACPI table) could inadvertently be deleted, causing
12546 Fixed a problem where a user buffer (passed in to the external
12547 ACPI CA interfaces) could be overwritten if the buffer was too
12548 small to complete the operation, causing memory corruption.
12550 Fixed a problem in the Buffer-to-String conversion code where a
12551 string of length one was always returned, regardless of the size
12552 of the input Buffer object.
12554 Removed the NATIVE_CHAR data type across the entire source due to
12555 lack of need and lack of consistent use.
12557 Code and Data Size: Current core subsystem library sizes are shown
12558 below. These are the code and data sizes for the acpica.lib
12559 produced by the Microsoft Visual C++ 6.0 compiler, and these
12560 values do not include any ACPI driver or OSPM code. The debug
12561 version of the code includes the debug output trace mechanism and
12562 has a much larger code and data size. Note that these values will
12563 vary depending on the efficiency of the compiler and the compiler
12564 options used during generation.
12567 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
12568 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
12570 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
12571 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
12574 ----------------------------------------
12575 05 December 2002. Summary of changes for version 20021205.
12577 1) ACPI CA Core Subsystem:
12579 Fixed a problem where a store to a String or Buffer object could
12580 cause corruption of the DSDT if the object type being stored was
12581 the same as the target object type and the length of the object
12582 being stored was equal to or smaller than the original (existing)
12583 target object. This was seen to cause corruption of battery _BIF
12584 buffers if the _BIF method modified the buffer on the fly.
12586 Fixed a problem where an internal error was generated if a control
12587 method invocation was used in an OperationRegion, Buffer, or
12588 Package declaration. This was caused by the deferred parsing of
12589 the control method and thus the deferred creation of the internal
12590 method object. The solution to this problem was to create the
12591 internal method object at the moment the method is encountered in
12592 the first pass - so that subsequent references to the method will
12593 able to obtain the required parameter count and thus properly
12594 parse the method invocation. This problem presented itself as an
12595 AE_AML_INTERNAL during the pass 1 parse phase during table load.
12597 Fixed a problem where the internal String object copy routine did
12598 not always allocate sufficient memory for the target String object
12599 and caused memory corruption. This problem was seen to cause
12600 "Allocation already present in list!" errors as memory allocation
12603 Implemented a new function for the evaluation of namespace objects
12604 that allows the specification of the allowable return object
12605 types. This simplifies a lot of code that checks for a return
12606 object of one or more specific objects returned from the
12607 evaluation (such as _STA, etc.) This may become and external
12608 function if it would be useful to ACPI-related drivers.
12610 Completed another round of prefixing #defines with "ACPI_" for
12613 Completed additional code restructuring to allow more modular
12614 linking for iASL compiler and AcpiExec. Several files were split
12615 creating new files. New files: nsparse.c dsinit.c evgpe.c
12617 Implemented an abort mechanism to terminate an executing control
12618 method via the AML debugger. This feature is useful for debugging
12619 control methods that depend (wait) for specific hardware
12622 Code and Data Size: Current core subsystem library sizes are shown
12623 below. These are the code and data sizes for the acpica.lib
12624 produced by the Microsoft Visual C++ 6.0 compiler, and these
12625 values do not include any ACPI driver or OSPM code. The debug
12626 version of the code includes the debug output trace mechanism and
12627 has a much larger code and data size. Note that these values will
12628 vary depending on the efficiency of the compiler and the compiler
12629 options used during generation.
12632 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
12633 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
12635 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
12636 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
12639 2) iASL Compiler/Disassembler
12641 Fixed a compiler code generation problem for "Interrupt" Resource
12642 Descriptors. If specified in the ASL, the optional "Resource
12643 Source Index" and "Resource Source" fields were not inserted into
12644 the correct location within the AML resource descriptor, creating
12645 an invalid descriptor.
12647 Fixed a disassembler problem for "Interrupt" resource descriptors.
12648 The optional "Resource Source Index" and "Resource Source" fields
12652 ----------------------------------------
12653 22 November 2002. Summary of changes for version 20021122.
12656 1) ACPI CA Core Subsystem:
12658 Fixed a reported problem where an object stored to a Method Local
12659 or Arg was not copied to a new object during the store - the
12660 object pointer was simply copied to the Local/Arg. This caused
12661 all subsequent operations on the Local/Arg to also affect the
12662 original source of the store operation.
12664 Fixed a problem where a store operation to a Method Local or Arg
12665 was not completed properly if the Local/Arg contained a reference
12666 (from RefOf) to a named field. The general-purpose store-to-
12667 namespace-node code is now used so that this case is handled
12670 Fixed a problem where the internal object copy routine would cause
12671 a protection fault if the object being copied was a Package and
12672 contained either 1) a NULL package element or 2) a nested sub-
12675 Fixed a problem with the GPE initialization that resulted from an
12676 ambiguity in the ACPI specification. One section of the
12677 specification states that both the address and length of the GPE
12678 block must be zero if the block is not supported. Another section
12679 implies that only the address need be zero if the block is not
12680 supported. The code has been changed so that both the address and
12681 the length must be non-zero to indicate a valid GPE block (i.e.,
12682 if either the address or the length is zero, the GPE block is
12685 Code and Data Size: Current core subsystem library sizes are shown
12686 below. These are the code and data sizes for the acpica.lib
12687 produced by the Microsoft Visual C++ 6.0 compiler, and these
12688 values do not include any ACPI driver or OSPM code. The debug
12689 version of the code includes the debug output trace mechanism and
12690 has a much larger code and data size. Note that these values will
12691 vary depending on the efficiency of the compiler and the compiler
12692 options used during generation.
12695 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
12696 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
12698 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
12699 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
12704 Cleaned up EC driver. Exported an external EC read/write
12705 interface. By going through this, other drivers (most notably
12706 sonypi) will be able to serialize access to the EC.
12709 3) iASL Compiler/Disassembler
12711 Implemented support to optionally generate include files for both
12712 ASM and C (the -i switch). This simplifies BIOS development by
12713 automatically creating include files that contain external
12714 declarations for the symbols that are created within the
12716 (optionally generated) ASM and C AML source files.
12719 ----------------------------------------
12720 15 November 2002. Summary of changes for version 20021115.
12722 1) ACPI CA Core Subsystem:
12724 Fixed a memory leak problem where an error during resolution of
12726 method arguments during a method invocation from another method
12727 failed to cleanup properly by deleting all successfully resolved
12730 Fixed a problem where the target of the Index() operator was not
12731 correctly constructed if the source object was a package. This
12732 problem has not been detected because the use of a target operand
12733 with Index() is very rare.
12735 Fixed a problem with the Index() operator where an attempt was
12736 made to delete the operand objects twice.
12738 Fixed a problem where an attempt was made to delete an operand
12739 twice during execution of the CondRefOf() operator if the target
12742 Implemented the first of perhaps several internal create object
12743 functions that create and initialize a specific object type. This
12744 consolidates duplicated code wherever the object is created, thus
12745 shrinking the size of the subsystem.
12747 Implemented improved debug/error messages for errors that occur
12748 during nested method invocations. All executing method pathnames
12749 are displayed (with the error) as the call stack is unwound - thus
12752 Fixed a problem introduced in the 10/02 release that caused
12753 premature deletion of a buffer object if a buffer was used as an
12754 ASL operand where an integer operand is required (Thus causing an
12755 implicit object conversion from Buffer to Integer.) The change in
12756 the 10/02 release was attempting to fix a memory leak (albeit
12759 Code and Data Size: Current core subsystem library sizes are shown
12760 below. These are the code and data sizes for the acpica.lib
12761 produced by the Microsoft Visual C++ 6.0 compiler, and these
12762 values do not include any ACPI driver or OSPM code. The debug
12763 version of the code includes the debug output trace mechanism and
12764 has a much larger code and data size. Note that these values will
12765 vary depending on the efficiency of the compiler and the compiler
12766 options used during generation.
12769 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
12770 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
12772 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
12773 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
12778 Changed the implementation of the ACPI semaphores to use down()
12779 instead of down_interruptable(). It is important that the
12780 execution of ACPI control methods not be interrupted by signals.
12781 Methods must run to completion, or the system may be left in an
12782 unknown/unstable state.
12784 Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set.
12788 3) iASL Compiler/Disassembler
12791 Changed the default location of output files. All output files
12792 are now placed in the current directory by default instead of in
12793 the directory of the source file. This change may affect some
12794 existing makefiles, but it brings the behavior of the compiler in
12795 line with other similar tools. The location of the output files
12796 can be overridden with the -p command line switch.
12799 ----------------------------------------
12800 11 November 2002. Summary of changes for version 20021111.
12803 0) ACPI Specification 2.0B is released and is now available at:
12804 http://www.acpi.info/index.html
12807 1) ACPI CA Core Subsystem:
12809 Implemented support for the ACPI 2.0 SMBus Operation Regions.
12810 This includes the early detection and handoff of the request to
12811 the SMBus region handler (avoiding all of the complex field
12812 support code), and support for the bidirectional return packet
12813 from an SMBus write operation. This paves the way for the
12814 development of SMBus drivers in each host operating system.
12816 Fixed a problem where the semaphore WAIT_FOREVER constant was
12817 defined as 32 bits, but must be 16 bits according to the ACPI
12818 specification. This had the side effect of causing ASL
12819 Mutex/Event timeouts even though the ASL code requested a wait
12820 forever. Changed all internal references to the ACPI timeout
12821 parameter to 16 bits to prevent future problems. Changed the name
12822 of WAIT_FOREVER to ACPI_WAIT_FOREVER.
12824 Code and Data Size: Current core subsystem library sizes are shown
12825 below. These are the code and data sizes for the acpica.lib
12826 produced by the Microsoft Visual C++ 6.0 compiler, and these
12827 values do not include any ACPI driver or OSPM code. The debug
12828 version of the code includes the debug output trace mechanism and
12829 has a much larger code and data size. Note that these values will
12830 vary depending on the efficiency of the compiler and the compiler
12831 options used during generation.
12834 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
12835 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
12837 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
12838 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
12843 Module loading/unloading fixes (John Cagle)
12846 3) iASL Compiler/Disassembler
12848 Added support for the SMBBlockProcessCall keyword (ACPI 2.0)
12850 Implemented support for the disassembly of all SMBus protocol
12851 keywords (SMBQuick, SMBWord, etc.)
12853 ----------------------------------------
12854 01 November 2002. Summary of changes for version 20021101.
12857 1) ACPI CA Core Subsystem:
12859 Fixed a problem where platforms that have a GPE1 block but no GPE0
12860 block were not handled correctly. This resulted in a "GPE
12861 overlap" error message. GPE0 is no longer required.
12863 Removed code added in the previous release that inserted nodes
12864 into the namespace in alphabetical order. This caused some side-
12865 effects on various machines. The root cause of the problem is
12866 still under investigation since in theory, the internal ordering
12867 of the namespace nodes should not matter.
12870 Enhanced error reporting for the case where a named object is not
12871 found during control method execution. The full ACPI namepath
12872 (name reference) of the object that was not found is displayed in
12875 Note: as a result of the overhaul of the namespace object types in
12876 the previous release, the namespace nodes for the predefined
12877 scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE
12878 instead of ACPI_TYPE_ANY. This simplifies the namespace
12879 management code but may affect code that walks the namespace tree
12880 looking for specific object types.
12882 Code and Data Size: Current core subsystem library sizes are shown
12883 below. These are the code and data sizes for the acpica.lib
12884 produced by the Microsoft Visual C++ 6.0 compiler, and these
12885 values do not include any ACPI driver or OSPM code. The debug
12886 version of the code includes the debug output trace mechanism and
12887 has a much larger code and data size. Note that these values will
12888 vary depending on the efficiency of the compiler and the compiler
12889 options used during generation.
12892 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
12893 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
12895 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
12896 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
12901 Fixed a problem introduced in the previous release where the
12902 Processor and Thermal objects were not recognized and installed in
12903 /proc. This was related to the scope type change described above.
12906 3) iASL Compiler/Disassembler
12908 Implemented the -g option to get all of the required ACPI tables
12909 from the registry and save them to files (Windows version of the
12910 compiler only.) The required tables are the FADT, FACS, and DSDT.
12912 Added ACPI table checksum validation during table disassembly in
12913 order to catch corrupted tables.
12916 ----------------------------------------
12917 22 October 2002. Summary of changes for version 20021022.
12919 1) ACPI CA Core Subsystem:
12921 Implemented a restriction on the Scope operator that the target
12922 must already exist in the namespace at the time the operator is
12923 encountered (during table load or method execution). In other
12924 words, forward references are not allowed and Scope() cannot
12925 create a new object. This changes the previous behavior where the
12926 interpreter would create the name if not found. This new behavior
12927 correctly enables the search-to-root algorithm during namespace
12928 lookup of the target name. Because of this upsearch, this fixes
12929 the known Compaq _SB_.OKEC problem and makes both the AML
12930 interpreter and iASL compiler compatible with other ACPI
12933 Completed a major overhaul of the internal ACPI object types for
12934 the ACPI Namespace and the associated operand objects. Many of
12935 these types had become obsolete with the introduction of the two-
12936 pass namespace load. This cleanup simplifies the code and makes
12937 the entire namespace load mechanism much clearer and easier to
12940 Improved debug output for tracking scope opening/closing to help
12941 diagnose scoping issues. The old scope name as well as the new
12942 scope name are displayed. Also improved error messages for
12943 problems with ASL Mutex objects and error messages for GPE
12946 Cleaned up the namespace dump code, removed obsolete code.
12948 All string output (for all namespace/object dumps) now uses the
12949 common ACPI string output procedure which handles escapes properly
12950 and does not emit non-printable characters.
12952 Fixed some issues with constants in the 64-bit version of the
12953 local C library (utclib.c)
12958 EC Driver: No longer attempts to acquire the Global Lock at
12962 3) iASL Compiler/Disassembler
12964 Implemented ACPI 2.0B grammar change that disallows all Type 1 and
12965 2 opcodes outside of a control method. This means that the
12966 "executable" operators (versus the "namespace" operators) cannot
12967 be used at the table level; they can only be used within a control
12970 Implemented the restriction on the Scope() operator where the
12971 target must already exist in the namespace at the time the
12972 operator is encountered (during ASL compilation). In other words,
12973 forward references are not allowed and Scope() cannot create a new
12974 object. This makes the iASL compiler compatible with other ACPI
12975 implementations and makes the Scope() implementation adhere to the
12976 ACPI specification.
12978 Fixed a problem where namepath optimization for the Alias operator
12979 was optimizing the wrong path (of the two namepaths.) This caused
12980 a "Missing alias link" error message.
12982 Fixed a problem where an "unknown reserved name" warning could be
12983 incorrectly generated for names like "_SB" when the trailing
12984 underscore is not used in the original ASL.
12986 Fixed a problem where the reserved name check did not handle
12987 NamePaths with multiple NameSegs correctly. The first nameseg of
12988 the NamePath was examined instead of the last NameSeg.
12991 ----------------------------------------
12993 02 October 2002. Summary of changes for this release.
12996 1) ACPI CA Core Subsystem version 20021002:
12998 Fixed a problem where a store/copy of a string to an existing
12999 string did not always set the string length properly in the String
13002 Fixed a reported problem with the ToString operator where the
13003 behavior was identical to the ToHexString operator instead of just
13004 simply converting a raw buffer to a string data type.
13006 Fixed a problem where CopyObject and the other "explicit"
13007 conversion operators were not updating the internal namespace node
13008 type as part of the store operation.
13010 Fixed a memory leak during implicit source operand conversion
13011 where the original object was not deleted if it was converted to a
13012 new object of a different type.
13014 Enhanced error messages for all problems associated with namespace
13015 lookups. Common procedure generates and prints the lookup name as
13016 well as the formatted status.
13018 Completed implementation of a new design for the Alias support
13019 within the namespace. The existing design did not handle the case
13020 where a new object was assigned to one of the two names due to the
13021 use of an explicit conversion operator, resulting in the two names
13022 pointing to two different objects. The new design simply points
13023 the Alias name to the original name node - not to the object.
13024 This results in a level of indirection that must be handled in the
13025 name resolution mechanism.
13027 Code and Data Size: Current core subsystem library sizes are shown
13028 below. These are the code and data sizes for the acpica.lib
13029 produced by the Microsoft Visual C++ 6.0 compiler, and these
13030 values do not include any ACPI driver or OSPM code. The debug
13031 version of the code includes the debug output trace mechanism and
13032 has a larger code and data size. Note that these values will vary
13033 depending on the efficiency of the compiler and the compiler
13034 options used during generation.
13037 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
13038 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
13040 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
13041 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
13046 Initialize thermal driver's timer before it is used. (Knut
13049 Allow handling negative celsius values. (Kochi Takayoshi)
13051 Fix thermal management and make trip points. R/W (Pavel Machek)
13053 Fix /proc/acpi/sleep. (P. Christeas)
13055 IA64 fixes. (David Mosberger)
13057 Fix reversed logic in blacklist code. (Sergio Monteiro Basto)
13059 Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik
13063 3) iASL Compiler/Disassembler
13065 Clarified some warning/error messages.
13068 ----------------------------------------
13069 18 September 2002. Summary of changes for this release.
13072 1) ACPI CA Core Subsystem version 20020918:
13074 Fixed a reported problem with reference chaining (via the Index()
13075 and RefOf() operators) in the ObjectType() and SizeOf() operators.
13076 The definition of these operators includes the dereferencing of
13077 all chained references to return information on the base object.
13079 Fixed a problem with stores to indexed package elements - the
13080 existing code would not complete the store if an "implicit
13081 conversion" was not performed. In other words, if the existing
13082 object (package element) was to be replaced completely, the code
13083 didn't handle this case.
13085 Relaxed typechecking on the ASL "Scope" operator to allow the
13086 target name to refer to an object of type Integer, String, or
13087 Buffer, in addition to the scoping object types (Device,
13088 predefined Scopes, Processor, PowerResource, and ThermalZone.)
13089 This allows existing AML code that has workarounds for a bug in
13090 Windows to function properly. A warning is issued, however. This
13091 affects both the AML interpreter and the iASL compiler. Below is
13092 an example of this type of ASL code:
13098 Fixed some reported problems with 64-bit integer support in the
13099 local implementation of C library functions (clib.c)
13104 Use ACPI fix map region instead of IOAPIC region, since it is
13105 undefined in non-SMP.
13107 Ensure that the SCI has the proper polarity and trigger, even on
13108 systems that do not have an interrupt override entry in the MADT.
13110 2.5 big driver reorganization (Pat Mochel)
13112 Use early table mapping code from acpitable.c (Andi Kleen)
13114 New blacklist entries (Andi Kleen)
13116 Blacklist improvements. Split blacklist code out into a separate
13117 file. Move checking the blacklist to very early. Previously, we
13118 would use ACPI tables, and then halfway through init, check the
13119 blacklist -- too late. Now, it's early enough to completely fall-
13123 3) iASL Compiler/Disassembler version 20020918:
13125 Fixed a problem where the typechecking code didn't know that an
13126 alias could point to a method. In other words, aliases were not
13127 being dereferenced during typechecking.
13130 ----------------------------------------
13131 29 August 2002. Summary of changes for this release.
13133 1) ACPI CA Core Subsystem Version 20020829:
13135 If the target of a Scope() operator already exists, it must be an
13136 object type that actually opens a scope -- such as a Device,
13137 Method, Scope, etc. This is a fatal runtime error. Similar error
13138 check has been added to the iASL compiler also.
13140 Tightened up the namespace load to disallow multiple names in the
13141 same scope. This previously was allowed if both objects were of
13142 the same type. (i.e., a lookup was the same as entering a new
13148 Ensure that the ACPI interrupt has the proper trigger and
13151 local_irq_disable is extraneous. (Matthew Wilcox)
13153 Make "acpi=off" actually do what it says, and not use the ACPI
13154 interpreter *or* the tables.
13156 Added arch-neutral support for parsing SLIT and SRAT tables (Kochi
13160 3) iASL Compiler/Disassembler Version 20020829:
13162 Implemented namepath optimization for name declarations. For
13163 example, a declaration like "Method (\_SB_.ABCD)" would get
13164 optimized to "Method (ABCD)" if the declaration is within the
13165 \_SB_ scope. This optimization is in addition to the named
13166 reference path optimization first released in the previous
13167 version. This would seem to complete all possible optimizations
13168 for namepaths within the ASL/AML.
13170 If the target of a Scope() operator already exists, it must be an
13171 object type that actually opens a scope -- such as a Device,
13172 Method, Scope, etc.
13174 Implemented a check and warning for unreachable code in the same
13175 block below a Return() statement.
13177 Fixed a problem where the listing file was not generated if the
13178 compiler aborted if the maximum error count was exceeded (200).
13180 Fixed a problem where the typechecking of method return values was
13181 broken. This includes the check for a return value when the
13182 method is invoked as a TermArg (a return value is expected.)
13184 Fixed a reported problem where EOF conditions during a quoted
13185 string or comment caused a fault.
13188 ----------------------------------------
13189 15 August 2002. Summary of changes for this release.
13191 1) ACPI CA Core Subsystem Version 20020815:
13193 Fixed a reported problem where a Store to a method argument that
13194 contains a reference did not perform the indirect store correctly.
13195 This problem was created during the conversion to the new
13196 reference object model - the indirect store to a method argument
13197 code was not updated to reflect the new model.
13199 Reworked the ACPI mode change code to better conform to ACPI 2.0,
13200 handle corner cases, and improve code legibility (Kochi Takayoshi)
13202 Fixed a problem with the pathname parsing for the carat (^)
13203 prefix. The heavy use of the carat operator by the new namepath
13204 optimization in the iASL compiler uncovered a problem with the AML
13205 interpreter handling of this prefix. In the case where one or
13206 more carats precede a single nameseg, the nameseg was treated as
13207 standalone and the search rule (to root) was inadvertently
13208 applied. This could cause both the iASL compiler and the
13209 interpreter to find the wrong object or to miss the error that
13210 should occur if the object does not exist at that exact pathname.
13212 Found and fixed the problem where the HP Pavilion DSDT would not
13213 load. This was a relatively minor tweak to the table loading code
13214 (a problem caused by the unexpected encounter with a method
13215 invocation not within a control method), but it does not solve the
13216 overall issue of the execution of AML code at the table level.
13217 This investigation is still ongoing.
13219 Code and Data Size: Current core subsystem library sizes are shown
13220 below. These are the code and data sizes for the acpica.lib
13221 produced by the Microsoft Visual C++ 6.0 compiler, and these
13222 values do not include any ACPI driver or OSPM code. The debug
13223 version of the code includes the debug output trace mechanism and
13224 has a larger code and data size. Note that these values will vary
13225 depending on the efficiency of the compiler and the compiler
13226 options used during generation.
13229 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
13230 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
13232 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
13233 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
13238 Remove redundant slab.h include (Brad Hards)
13240 Fix several bugs in thermal.c (Herbert Nachtnebel)
13242 Make CONFIG_ACPI_BOOT work properly (Pavel Machek)
13244 Change acpi_system_suspend to use updated irq functions (Pavel
13247 Export acpi_get_firmware_table (Matthew Wilcox)
13249 Use proper root proc entry for ACPI (Kochi Takayoshi)
13251 Fix early-boot table parsing (Bjorn Helgaas)
13254 3) iASL Compiler/Disassembler
13256 Reworked the compiler options to make them more consistent and to
13257 use two-letter options where appropriate. We were running out of
13258 sensible letters. This may break some makefiles, so check the
13259 current options list by invoking the compiler with no parameters.
13261 Completed the design and implementation of the ASL namepath
13262 optimization option for the compiler. This option optimizes all
13263 references to named objects to the shortest possible path. The
13264 first attempt tries to utilize a single nameseg (4 characters) and
13265 the "search-to-root" algorithm used by the interpreter. If that
13266 cannot be used (because either the name is not in the search path
13267 or there is a conflict with another object with the same name),
13268 the pathname is optimized using the carat prefix (usually a
13269 shorter string than specifying the entire path from the root.)
13271 Implemented support to obtain the DSDT from the Windows registry
13272 (when the disassembly option is specified with no input file).
13273 Added this code as the implementation for AcpiOsTableOverride in
13274 the Windows OSL. Migrated the 16-bit code (used in the AcpiDump
13275 utility) to scan memory for the DSDT to the AcpiOsTableOverride
13276 function in the DOS OSL to make the disassembler truly OS
13279 Implemented a new option to disassemble and compile in one step.
13280 When used without an input filename, this option will grab the
13281 DSDT from the local machine, disassemble it, and compile it in one
13284 Added a warning message for invalid escapes (a backslash followed
13285 by any character other than the allowable escapes). This catches
13286 the quoted string error "\_SB_" (which should be "\\_SB_" ).
13288 Also, there are numerous instances in the ACPI specification where
13291 Added a compiler option to disable all optimizations. This is
13292 basically the "compatibility mode" because by using this option,
13293 the AML code will come out exactly the same as other ASL
13296 Added error messages for incorrectly ordered dependent resource
13297 functions. This includes: missing EndDependentFn macro at end of
13298 dependent resource list, nested dependent function macros (both
13299 start and end), and missing StartDependentFn macro. These are
13300 common errors that should be caught at compile time.
13302 Implemented _OSI support for the disassembler and compiler. _OSI
13303 must be included in the namespace for proper disassembly (because
13304 the disassembler must know the number of arguments.)
13306 Added an "optimization" message type that is optional (off by
13307 default). This message is used for all optimizations - including
13308 constant folding, integer optimization, and namepath optimization.
13310 ----------------------------------------
13311 25 July 2002. Summary of changes for this release.
13314 1) ACPI CA Core Subsystem Version 20020725:
13316 The AML Disassembler has been enhanced to produce compilable ASL
13317 code and has been integrated into the iASL compiler (see below) as
13318 well as the single-step disassembly for the AML debugger and the
13319 disassembler for the AcpiDump utility. All ACPI 2.0A opcodes,
13320 resource templates and macros are fully supported. The
13321 disassembler has been tested on over 30 different AML files,
13322 producing identical AML when the resulting disassembled ASL file
13323 is recompiled with the same ASL compiler.
13325 Modified the Resource Manager to allow zero interrupts and zero
13326 dma channels during the GetCurrentResources call. This was
13327 causing problems on some platforms.
13329 Added the AcpiOsRedirectOutput interface to the OSL to simplify
13330 output redirection for the AcpiOsPrintf and AcpiOsVprintf
13333 Code and Data Size: Current core subsystem library sizes are shown
13334 below. These are the code and data sizes for the acpica.lib
13335 produced by the Microsoft Visual C++ 6.0 compiler, and these
13336 values do not include any ACPI driver or OSPM code. The debug
13337 version of the code includes the debug output trace mechanism and
13338 has a larger code and data size. Note that these values will vary
13339 depending on the efficiency of the compiler and the compiler
13340 options used during generation.
13343 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
13344 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
13346 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
13347 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
13352 Fixed a panic in the EC driver (Dominik Brodowski)
13354 Implemented checksum of the R/XSDT itself during Linux table scan
13360 The AML disassembler is integrated into the compiler. The "-d"
13361 option invokes the disassembler to completely disassemble an
13362 input AML file, producing as output a text ASL file with the
13363 extension ".dsl" (to avoid name collisions with existing .asl
13364 source files.) A future enhancement will allow the disassembler
13365 to obtain the BIOS DSDT from the registry under Windows.
13367 Fixed a problem with the VendorShort and VendorLong resource
13368 descriptors where an invalid AML sequence was created.
13370 Implemented a fix for BufferData term in the ASL parser. It was
13371 inadvertently defined twice, allowing invalid syntax to pass and
13372 causing reduction conflicts.
13374 Fixed a problem where the Ones opcode could get converted to a
13375 value of zero if "Ones" was used where a byte, word or dword value
13376 was expected. The 64-bit value is now truncated to the correct
13377 size with the correct value.
13381 ----------------------------------------
13382 02 July 2002. Summary of changes for this release.
13385 1) ACPI CA Core Subsystem Version 20020702:
13387 The Table Manager code has been restructured to add several new
13388 features. Tables that are not required by the core subsystem
13389 (other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer
13390 validated in any way and are returned from AcpiGetFirmwareTable if
13391 requested. The AcpiOsTableOverride interface is now called for
13392 each table that is loaded by the subsystem in order to allow the
13393 host to override any table it chooses. Previously, only the DSDT
13394 could be overridden. Added one new files, tbrsdt.c and
13397 Fixed a problem with the conversion of internal package objects to
13398 external objects (when a package is returned from a control
13399 method.) The return buffer length was set to zero instead of the
13400 proper length of the package object.
13402 Fixed a reported problem with the use of the RefOf and DeRefOf
13403 operators when passing reference arguments to control methods. A
13404 new type of Reference object is used internally for references
13405 produced by the RefOf operator.
13407 Added additional error messages in the Resource Manager to explain
13408 AE_BAD_DATA errors when they occur during resource parsing.
13410 Split the AcpiEnableSubsystem into two primitives to enable a
13411 finer granularity initialization sequence. These two calls should
13412 be called in this order: AcpiEnableSubsystem (flags),
13413 AcpiInitializeObjects (flags). The flags parameter remains the
13419 Updated the ACPI utilities module to understand the new style of
13420 fully resolved package objects that are now returned from the core
13421 subsystem. This eliminates errors of the form:
13423 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT]
13424 acpi_utils-0430 [145] acpi_evaluate_reference:
13425 Invalid element in package (not a device reference)
13427 The method evaluation utility uses the new buffer allocation
13428 scheme instead of calling AcpiEvaluate Object twice.
13430 Added support for ECDT. This allows the use of the Embedded
13432 Controller before the namespace has been fully initialized, which
13433 is necessary for ACPI 2.0 support, and for some laptops to
13434 initialize properly. (Laptops using ECDT are still rare, so only
13435 limited testing was performed of the added functionality.)
13437 Fixed memory leaks in the EC driver.
13439 Eliminated a brittle code structure in acpi_bus_init().
13441 Eliminated the acpi_evaluate() helper function in utils.c. It is
13442 no longer needed since acpi_evaluate_object can optionally
13443 allocate memory for the return object.
13445 Implemented fix for keyboard hang when getting battery readings on
13446 some systems (Stephen White)
13448 PCI IRQ routing update (Dominik Brodowski)
13450 Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC
13453 ----------------------------------------
13454 11 June 2002. Summary of changes for this release.
13457 1) ACPI CA Core Subsystem Version 20020611:
13459 Fixed a reported problem where constants such as Zero and One
13460 appearing within _PRT packages were not handled correctly within
13461 the resource manager code. Originally reported against the ASL
13462 compiler because the code generator now optimizes integers to
13463 their minimal AML representation (i.e. AML constants if possible.)
13464 The _PRT code now handles all AML constant opcodes correctly
13465 (Zero, One, Ones, Revision).
13467 Fixed a problem with the Concatenate operator in the AML
13468 interpreter where a buffer result object was incorrectly marked as
13469 not fully evaluated, causing a run-time error of AE_AML_INTERNAL.
13471 All package sub-objects are now fully resolved before they are
13472 returned from the external ACPI interfaces. This means that name
13473 strings are resolved to object handles, and constant operators
13474 (Zero, One, Ones, Revision) are resolved to Integers.
13476 Implemented immediate resolution of the AML Constant opcodes
13477 (Zero, One, Ones, Revision) to Integer objects upon detection
13478 within the AML stream. This has simplified and reduced the
13479 generated code size of the subsystem by eliminating about 10
13480 switch statements for these constants (which previously were
13481 contained in Reference objects.) The complicating issues are that
13482 the Zero opcode is used as a "placeholder" for unspecified
13483 optional target operands and stores to constants are defined to be
13486 Code and Data Size: Current core subsystem library sizes are shown
13487 below. These are the code and data sizes for the acpica.lib
13488 produced by the Microsoft Visual C++ 6.0 compiler, and these
13489 values do not include any ACPI driver or OSPM code. The debug
13490 version of the code includes the debug output trace mechanism and
13491 has a larger code and data size. Note that these values will vary
13492 depending on the efficiency of the compiler and the compiler
13493 options used during generation.
13496 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
13497 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
13499 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
13500 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
13506 Added preliminary support for obtaining _TRA data for PCI root
13507 bridges (Bjorn Helgaas).
13510 3) iASL Compiler Version X2046:
13512 Fixed a problem where the "_DDN" reserved name was defined to be a
13513 control method with one argument. There are no arguments, and
13514 _DDN does not have to be a control method.
13516 Fixed a problem with the Linux version of the compiler where the
13517 source lines printed with error messages were the wrong lines.
13518 This turned out to be the "LF versus CR/LF" difference between
13519 Windows and Unix. This appears to be the longstanding issue
13520 concerning listing output and error messages.
13522 Fixed a problem with the Linux version of compiler where opcode
13523 names within error messages were wrong. This was caused by a
13524 slight difference in the output of the Flex tool on Linux versus
13527 Fixed a problem with the Linux compiler where the hex output files
13528 contained some garbage data caused by an internal buffer overrun.
13531 ----------------------------------------
13532 17 May 2002. Summary of changes for this release.
13535 1) ACPI CA Core Subsystem Version 20020517:
13537 Implemented a workaround to an BIOS bug discovered on the HP
13538 OmniBook where the FADT revision number and the table size are
13539 inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new
13540 behavior is to fallback to using only the ACPI 1.0 fields of the
13541 FADT if the table is too small to be a ACPI 2.0 table as claimed
13542 by the revision number. Although this is a BIOS bug, this is a
13543 case where the workaround is simple enough and with no side
13544 effects, so it seemed prudent to add it. A warning message is
13547 Implemented minimum size checks for the fixed-length ACPI tables -
13548 - the FADT and FACS, as well as consistency checks between the
13549 revision number and the table size.
13551 Fixed a reported problem in the table override support where the
13552 new table pointer was incorrectly treated as a physical address
13553 instead of a logical address.
13555 Eliminated the use of the AE_AML_ERROR exception and replaced it
13556 with more descriptive codes.
13558 Fixed a problem where an exception would occur if an ASL Field was
13559 defined with no named Field Units underneath it (used by some
13562 Code and Data Size: Current core subsystem library sizes are shown
13563 below. These are the code and data sizes for the acpica.lib
13564 produced by the Microsoft Visual C++ 6.0 compiler, and these
13565 values do not include any ACPI driver or OSPM code. The debug
13566 version of the code includes the debug output trace mechanism and
13567 has a larger code and data size. Note that these values will vary
13568 depending on the efficiency of the compiler and the compiler
13569 options used during generation.
13572 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
13573 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
13575 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
13576 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
13582 Much work done on ACPI init (MADT and PCI IRQ routing support).
13583 (Paul D. and Dominik Brodowski)
13585 Fix PCI IRQ-related panic on boot (Sam Revitch)
13587 Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno)
13589 Fix "MHz" typo (Dominik Brodowski)
13591 Fix RTC year 2000 issue (Dominik Brodowski)
13593 Preclude multiple button proc entries (Eric Brunet)
13595 Moved arch-specific code out of include/platform/aclinux.h
13597 3) iASL Compiler Version X2044:
13599 Implemented error checking for the string used in the EISAID macro
13600 (Usually used in the definition of the _HID object.) The code now
13601 strictly enforces the PnP format - exactly 7 characters, 3
13602 uppercase letters and 4 hex digits.
13604 If a raw string is used in the definition of the _HID object
13605 (instead of the EISAID macro), the string must contain all
13606 alphanumeric characters (e.g., "*PNP0011" is not allowed because
13609 Implemented checking for invalid use of ACPI reserved names for
13610 most of the name creation operators (Name, Device, Event, Mutex,
13611 OperationRegion, PowerResource, Processor, and ThermalZone.)
13612 Previously, this check was only performed for control methods.
13614 Implemented an additional check on the Name operator to emit an
13615 error if a reserved name that must be implemented in ASL as a
13616 control method is used. We know that a reserved name must be a
13617 method if it is defined with input arguments.
13619 The warning emitted when a namespace object reference is not found
13620 during the cross reference phase has been changed into an error.
13621 The "External" directive should be used for names defined in other
13625 4) Tools and Utilities
13627 The 16-bit tools (adump16 and aexec16) have been regenerated and
13630 Fixed a problem with the output of both acpidump and adump16 where
13631 the indentation of closing parentheses and brackets was not
13633 aligned properly with the parent block.
13636 ----------------------------------------
13637 03 May 2002. Summary of changes for this release.
13640 1) ACPI CA Core Subsystem Version 20020503:
13642 Added support a new OSL interface that allows the host operating
13644 system software to override the DSDT found in the firmware -
13645 AcpiOsTableOverride. With this interface, the OSL can examine the
13646 version of the firmware DSDT and replace it with a different one
13649 Added new external interfaces for accessing ACPI registers from
13650 device drivers and other system software - AcpiGetRegister and
13651 AcpiSetRegister. This was simply an externalization of the
13652 existing AcpiHwBitRegister interfaces.
13654 Fixed a regression introduced in the previous build where the
13655 ASL/AML CreateField operator always returned an error,
13656 "destination must be a NS Node".
13658 Extended the maximum time (before failure) to successfully enable
13659 ACPI mode to 3 seconds.
13661 Code and Data Size: Current core subsystem library sizes are shown
13662 below. These are the code and data sizes for the acpica.lib
13663 produced by the Microsoft Visual C++ 6.0 compiler, and these
13664 values do not include any ACPI driver or OSPM code. The debug
13665 version of the code includes the debug output trace mechanism and
13666 has a larger code and data size. Note that these values will vary
13667 depending on the efficiency of the compiler and the compiler
13668 options used during generation.
13671 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
13672 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
13674 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
13675 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
13680 Enhanced ACPI init code for SMP. We are now fully MPS and $PIR-
13681 free. While 3 out of 4 of our in-house systems work fine, the last
13682 one still hangs when testing the LAPIC timer.
13684 Renamed many files in 2.5 kernel release to omit "acpi_" from the
13687 Added warning on boot for Presario 711FR.
13689 Sleep improvements (Pavel Machek)
13691 ACPI can now be built without CONFIG_PCI enabled.
13693 IA64: Fixed memory map functions (JI Lee)
13696 3) iASL Compiler Version X2043:
13698 Added support to allow the compiler to be integrated into the MS
13699 VC++ development environment for one-button compilation of single
13700 files or entire projects -- with error-to-source-line mapping.
13702 Implemented support for compile-time constant folding for the
13703 Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0
13704 specification. This allows the ASL writer to use expressions
13705 instead of Integer/Buffer/String constants in terms that must
13706 evaluate to constants at compile time and will also simplify the
13707 emitted AML in any such sub-expressions that can be folded
13708 (evaluated at compile-time.) This increases the size of the
13709 compiler significantly because a portion of the ACPI CA AML
13710 interpreter is included within the compiler in order to pre-
13711 evaluate constant expressions.
13714 Fixed a problem with the "Unicode" ASL macro that caused the
13715 compiler to fault. (This macro is used in conjunction with the
13716 _STR reserved name.)
13718 Implemented an AML opcode optimization to use the Zero, One, and
13719 Ones opcodes where possible to further reduce the size of integer
13720 constants and thus reduce the overall size of the generated AML
13723 Implemented error checking for new reserved terms for ACPI version
13726 Implemented the -qr option to display the current list of ACPI
13727 reserved names known to the compiler.
13729 Implemented the -qc option to display the current list of ASL
13730 operators that are allowed within constant expressions and can
13731 therefore be folded at compile time if the operands are constants.
13736 Updated the Programmer's Reference for new interfaces, data types,
13737 and memory allocation model options.
13739 Updated the iASL Compiler User Reference to apply new format and
13740 add information about new features and options.
13742 ----------------------------------------
13743 19 April 2002. Summary of changes for this release.
13745 1) ACPI CA Core Subsystem Version 20020419:
13747 The source code base for the Core Subsystem has been completely
13748 cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit
13749 versions. The Lint option files used are included in the
13750 /acpi/generate/lint directory.
13752 Implemented enhanced status/error checking across the entire
13753 Hardware manager subsystem. Any hardware errors (reported from
13754 the OSL) are now bubbled up and will abort a running control
13758 Fixed a problem where the per-ACPI-table integer width (32 or 64)
13759 was stored only with control method nodes, causing a fault when
13760 non-control method code was executed during table loading. The
13761 solution implemented uses a global variable to indicate table
13762 width across the entire ACPI subsystem. Therefore, ACPI CA does
13763 not support mixed integer widths across different ACPI tables
13766 Fixed a problem where NULL extended fields (X fields) in an ACPI
13767 2.0 ACPI FADT caused the table load to fail. Although the
13768 existing ACPI specification is a bit fuzzy on this topic, the new
13769 behavior is to fall back on a ACPI 1.0 field if the corresponding
13770 ACPI 2.0 X field is zero (even though the table revision indicates
13771 a full ACPI 2.0 table.) The ACPI specification will be updated to
13772 clarify this issue.
13774 Fixed a problem with the SystemMemory operation region handler
13775 where memory was always accessed byte-wise even if the AML-
13776 specified access width was larger than a byte. This caused
13777 problems on systems with memory-mapped I/O. Memory is now
13778 accessed with the width specified. On systems that do not support
13779 non-aligned transfers, a check is made to guarantee proper address
13780 alignment before proceeding in order to avoid an AML-caused
13781 alignment fault within the kernel.
13784 Fixed a problem with the ExtendedIrq resource where only one byte
13785 of the 4-byte Irq field was extracted.
13787 Fixed the AcpiExDigitsNeeded() procedure to support _UID. This
13788 function was out of date and required a rewrite.
13790 Code and Data Size: Current core subsystem library sizes are shown
13791 below. These are the code and data sizes for the acpica.lib
13792 produced by the Microsoft Visual C++ 6.0 compiler, and these
13793 values do not include any ACPI driver or OSPM code. The debug
13794 version of the code includes the debug output trace mechanism and
13795 has a larger code and data size. Note that these values will vary
13796 depending on the efficiency of the compiler and the compiler
13797 options used during generation.
13800 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
13801 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
13803 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
13804 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
13809 PCI IRQ routing fixes (Dominik Brodowski)
13812 3) iASL Compiler Version X2042:
13814 Implemented an additional compile-time error check for a field
13815 unit whose size + minimum access width would cause a run-time
13816 access beyond the end-of-region. Previously, only the field size
13817 itself was checked.
13819 The Core subsystem and iASL compiler now share a common parse
13820 object in preparation for compile-time evaluation of the type
13821 3/4/5 ASL operators.
13824 ----------------------------------------
13825 Summary of changes for this release: 03_29_02
13827 1) ACPI CA Core Subsystem Version 20020329:
13829 Implemented support for late evaluation of TermArg operands to
13830 Buffer and Package objects. This allows complex expressions to be
13831 used in the declarations of these object types.
13833 Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI
13834 1.0, if the field was larger than 32 bits, it was returned as a
13835 buffer - otherwise it was returned as an integer. In ACPI 2.0,
13836 the field is returned as a buffer only if the field is larger than
13837 64 bits. The TableRevision is now considered when making this
13838 conversion to avoid incompatibility with existing ASL code.
13840 Implemented logical addressing for AcpiOsGetRootPointer. This
13841 allows an RSDP with either a logical or physical address. With
13842 this support, the host OS can now override all ACPI tables with
13843 one logical RSDP. Includes implementation of "typed" pointer
13844 support to allow a common data type for both physical and logical
13845 pointers internally. This required a change to the
13846 AcpiOsGetRootPointer interface.
13848 Implemented the use of ACPI 2.0 Generic Address Structures for all
13849 GPE, Fixed Event, and PM Timer I/O. This allows the use of memory
13850 mapped I/O for these ACPI features.
13852 Initialization now ignores not only non-required tables (All
13853 tables other than the FADT, FACS, DSDT, and SSDTs), but also does
13854 not validate the table headers of unrecognized tables.
13856 Fixed a problem where a notify handler could only be
13857 installed/removed on an object of type Device. All "notify"
13859 objects are now supported -- Devices, Processor, Power, and
13862 Removed most verbosity from the ACPI_DB_INFO debug level. Only
13863 critical information is returned when this debug level is enabled.
13865 Code and Data Size: Current core subsystem library sizes are shown
13866 below. These are the code and data sizes for the acpica.lib
13867 produced by the Microsoft Visual C++ 6.0 compiler, and these
13868 values do not include any ACPI driver or OSPM code. The debug
13869 version of the code includes the debug output trace mechanism and
13870 has a larger code and data size. Note that these values will vary
13871 depending on the efficiency of the compiler and the compiler
13872 options used during generation.
13875 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
13876 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
13878 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
13879 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
13884 The processor driver (acpi_processor.c) now fully supports ACPI
13885 2.0-based processor performance control (e.g. Intel(R)
13886 SpeedStep(TM) technology) Note that older laptops that only have
13887 the Intel "applet" interface are not supported through this. The
13888 'limit' and 'performance' interface (/proc) are fully functional.
13889 [Note that basic policy for controlling performance state
13890 transitions will be included in the next version of ospmd.] The
13891 idle handler was modified to more aggressively use C2, and PIIX4
13892 errata handling underwent a complete overhaul (big thanks to
13893 Dominik Brodowski).
13895 Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR-
13896 based devices in the ACPI namespace are now dynamically bound
13897 (associated) with their PCI counterparts (e.g. PCI1->01:00.0).
13898 This allows, among other things, ACPI to resolve bus numbers for
13899 subordinate PCI bridges.
13901 Enhanced PCI IRQ routing to get the proper bus number for _PRT
13902 entries defined underneath PCI bridges.
13904 Added IBM 600E to bad bios list due to invalid _ADR value for
13905 PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing.
13907 In the process of adding full MADT support (e.g. IOAPIC) for IA32
13908 (acpi.c, mpparse.c) -- stay tuned.
13910 Added back visual differentiation between fixed-feature and
13911 control-method buttons in dmesg. Buttons are also subtyped (e.g.
13912 button/power/PWRF) to simplify button identification.
13914 We no longer use -Wno-unused when compiling debug. Please ignore
13915 any "_THIS_MODULE defined but not used" messages.
13917 Can now shut down the system using "magic sysrq" key.
13920 3) iASL Compiler version 2041:
13922 Fixed a problem where conversion errors for hex/octal/decimal
13923 constants were not reported.
13925 Implemented a fix for the General Register template Address field.
13926 This field was 8 bits when it should be 64.
13928 Fixed a problem where errors/warnings were no longer being emitted
13929 within the listing output file.
13931 Implemented the ACPI 2.0A restriction on ACPI Table Signatures to
13932 exactly 4 characters, alphanumeric only.
13937 ----------------------------------------
13938 Summary of changes for this release: 03_08_02
13941 1) ACPI CA Core Subsystem Version 20020308:
13943 Fixed a problem with AML Fields where the use of the "AccessAny"
13944 keyword could cause an interpreter error due to attempting to read
13945 or write beyond the end of the parent Operation Region.
13947 Fixed a problem in the SystemMemory Operation Region handler where
13948 an attempt was made to map memory beyond the end of the region.
13949 This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY"
13950 errors on some Linux systems.
13952 Fixed a problem where the interpreter/namespace "search to root"
13953 algorithm was not functioning for some object types. Relaxed the
13954 internal restriction on the search to allow upsearches for all
13955 external object types as well as most internal types.
13960 We now use safe_halt() macro versus individual calls to sti | hlt.
13962 Writing to the processor limit interface should now work. "echo 1"
13963 will increase the limit, 2 will decrease, and 0 will reset to the
13970 Fixed segfault on Linux version.
13973 ----------------------------------------
13974 Summary of changes for this release: 02_25_02
13976 1) ACPI CA Core Subsystem:
13979 Fixed a problem where the GPE bit masks were not initialized
13980 properly, causing erratic GPE behavior.
13982 Implemented limited support for multiple calling conventions. The
13983 code can be generated with either the VPL (variable parameter
13984 list, or "C") convention, or the FPL (fixed parameter list, or
13985 "Pascal") convention. The core subsystem is about 3.4% smaller
13986 when generated with FPL.
13991 Re-add some /proc/acpi/event functionality that was lost during
13994 Resolved issue with /proc events for fixed-feature buttons showing
13995 up as the system device.
13997 Fixed checks on C2/C3 latencies to be inclusive of maximum values.
13999 Replaced AE_ERRORs in acpi_osl.c with more specific error codes.
14001 Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi"
14003 Fixed limit interface & usage to fix bugs with passive cooling
14006 Restructured PRT support.
14009 ----------------------------------------
14010 Summary of changes for this label: 02_14_02
14013 1) ACPI CA Core Subsystem:
14015 Implemented support in AcpiLoadTable to allow loading of FACS and
14018 Suport for the now-obsolete interim 0.71 64-bit ACPI tables has
14019 been removed. All 64-bit platforms should be migrated to the ACPI
14020 2.0 tables. The actbl71.h header has been removed from the source
14023 All C macros defined within the subsystem have been prefixed with
14024 "ACPI_" to avoid collision with other system include files.
14026 Removed the return value for the two AcpiOsPrint interfaces, since
14027 it is never used and causes lint warnings for ignoring the return
14030 Added error checking to all internal mutex acquire and release
14031 calls. Although a failure from one of these interfaces is
14032 probably a fatal system error, these checks will cause the
14033 immediate abort of the currently executing method or interface.
14035 Fixed a problem where the AcpiSetCurrentResources interface could
14036 fault. This was a side effect of the deployment of the new memory
14039 Fixed a couple of problems with the Global Lock support introduced
14040 in the last major build. The "common" (1.0/2.0) internal FACS was
14041 being overwritten with the FACS signature and clobbering the
14042 Global Lock pointer. Also, the actual firmware FACS was being
14043 unmapped after construction of the "common" FACS, preventing
14044 access to the actual Global Lock field within it. The "common"
14045 internal FACS is no longer installed as an actual ACPI table; it
14046 is used simply as a global.
14048 Code and Data Size: Current core subsystem library sizes are shown
14049 below. These are the code and data sizes for the acpica.lib
14050 produced by the Microsoft Visual C++ 6.0 compiler, and these
14051 values do not include any ACPI driver or OSPM code. The debug
14052 version of the code includes the debug output trace mechanism and
14053 has a larger code and data size. Note that these values will vary
14054 depending on the efficiency of the compiler and the compiler
14055 options used during generation.
14057 Previous Release (02_07_01)
14058 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
14059 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
14061 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
14062 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
14067 Updated Linux-specific code for core macro and OSL interface
14068 changes described above.
14070 Improved /proc/acpi/event. It now can be opened only once and has
14071 proper poll functionality.
14073 Fixed and restructured power management (acpi_bus).
14075 Only create /proc "view by type" when devices of that class exist.
14077 Fixed "charging/discharging" bug (and others) in acpi_battery.
14079 Improved thermal zone code.
14082 3) ASL Compiler, version X2039:
14085 Implemented the new compiler restriction on ASL String hex/octal
14086 escapes to non-null, ASCII values. An error results if an invalid
14087 value is used. (This will require an ACPI 2.0 specification
14090 AML object labels that are output to the optional C and ASM source
14091 are now prefixed with both the ACPI table signature and table ID
14092 to help guarantee uniqueness within a large BIOS project.
14095 ----------------------------------------
14096 Summary of changes for this label: 02_01_02
14098 1) ACPI CA Core Subsystem:
14100 ACPI 2.0 support is complete in the entire Core Subsystem and the
14101 ASL compiler. All new ACPI 2.0 operators are implemented and all
14102 other changes for ACPI 2.0 support are complete. With
14103 simultaneous code and data optimizations throughout the subsystem,
14104 ACPI 2.0 support has been implemented with almost no additional
14105 cost in terms of code and data size.
14107 Implemented a new mechanism for allocation of return buffers. If
14108 the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will
14109 be allocated on behalf of the caller. Consolidated all return
14110 buffer validation and allocation to a common procedure. Return
14111 buffers will be allocated via the primary OSL allocation interface
14112 since it appears that a separate pool is not needed by most users.
14113 If a separate pool is required for these buffers, the caller can
14114 still use the original mechanism and pre-allocate the buffer(s).
14116 Implemented support for string operands within the DerefOf
14119 Restructured the Hardware and Event managers to be table driven,
14120 simplifying the source code and reducing the amount of generated
14123 Split the common read/write low-level ACPI register bitfield
14124 procedure into a separate read and write, simplifying the code
14127 Obsoleted the AcpiOsCallocate OSL interface. This interface was
14128 used only a handful of times and didn't have enough critical mass
14129 for a separate interface. Replaced with a common calloc procedure
14132 Fixed a reported problem with the GPE number mapping mechanism
14133 that allows GPE1 numbers to be non-contiguous with GPE0.
14134 Reorganized the GPE information and shrunk a large array that was
14135 originally large enough to hold info for all possible GPEs (256)
14136 to simply large enough to hold all GPEs up to the largest GPE
14137 number on the machine.
14139 Fixed a reported problem with resource structure alignment on 64-
14142 Changed the AcpiEnableEvent and AcpiDisableEvent external
14143 interfaces to not require any flags for the common case of
14144 enabling/disabling a GPE.
14146 Implemented support to allow a "Notify" on a Processor object.
14148 Most TBDs in comments within the source code have been resolved
14152 Fixed a problem in the interpreter where a standalone parent
14153 prefix (^) was not handled correctly in the interpreter and
14156 Removed obsolete and unnecessary GPE save/restore code.
14158 Implemented Field support in the ASL Load operator. This allows a
14159 table to be loaded from a named field, in addition to loading a
14160 table directly from an Operation Region.
14162 Implemented timeout and handle support in the external Global Lock
14165 Fixed a problem in the AcpiDump utility where pathnames were no
14166 longer being generated correctly during the dump of named objects.
14168 Modified the AML debugger to give a full display of if/while
14169 predicates instead of just one AML opcode at a time. (The
14170 predicate can have several nested ASL statements.) The old method
14171 was confusing during single stepping.
14173 Code and Data Size: Current core subsystem library sizes are shown
14174 below. These are the code and data sizes for the acpica.lib
14175 produced by the Microsoft Visual C++ 6.0 compiler, and these
14176 values do not include any ACPI driver or OSPM code. The debug
14177 version of the code includes the debug output trace mechanism and
14178 has a larger code and data size. Note that these values will vary
14179 depending on the efficiency of the compiler and the compiler
14180 options used during generation.
14182 Previous Release (12_18_01)
14183 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
14184 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
14186 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
14187 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
14191 Implemented fix for PIIX reverse throttling errata (Processor
14194 Added new Limit interface (Processor and Thermal drivers)
14196 New thermal policy (Thermal driver)
14198 Many updates to /proc
14200 Battery "low" event support (Battery driver)
14202 Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers)
14204 IA32 - IA64 initialization unification, no longer experimental
14206 Menuconfig options redesigned
14208 3) ASL Compiler, version X2037:
14210 Implemented several new output features to simplify integration of
14211 AML code into firmware: 1) Output the AML in C source code with
14212 labels for each named ASL object. The original ASL source code
14213 is interleaved as C comments. 2) Output the AML in ASM source code
14214 with labels and interleaved ASL source. 3) Output the AML in
14215 raw hex table form, in either C or ASM.
14217 Implemented support for optional string parameters to the
14218 LoadTable operator.
14220 Completed support for embedded escape sequences within string
14221 literals. The compiler now supports all single character escapes
14222 as well as the Octal and Hex escapes. Note: the insertion of a
14223 null byte into a string literal (via the hex/octal escape) causes
14224 the string to be immediately terminated. A warning is issued.
14226 Fixed a problem where incorrect AML was generated for the case
14227 where an ASL namepath consists of a single parent prefix (
14229 ) with no trailing name segments.
14231 The compiler has been successfully generated with a 64-bit C
14237 ----------------------------------------
14238 Summary of changes for this label: 12_18_01
14242 Enhanced blacklist with reason and severity fields. Any table's
14243 signature may now be used to identify a blacklisted system.
14245 Call _PIC control method to inform the firmware which interrupt
14246 model the OS is using. Turn on any disabled link devices.
14248 Cleaned up busmgr /proc error handling (Andreas Dilger)
14250 2) ACPI CA Core Subsystem:
14252 Implemented ACPI 2.0 semantics for the "Break" operator (Exit from
14255 Completed implementation of the ACPI 2.0 "Continue",
14256 "ConcatenateResTemplate", "DataTableRegion", and "LoadTable"
14257 operators. All new ACPI 2.0 operators are now implemented in both
14258 the ASL compiler and the AML interpreter. The only remaining ACPI
14259 2.0 task is support for the String data type in the DerefOf
14260 operator. Fixed a problem with AcquireMutex where the status code
14261 was lost if the caller had to actually wait for the mutex.
14263 Increased the maximum ASL Field size from 64K bits to 4G bits.
14265 Completed implementation of the external Global Lock interfaces --
14266 AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and
14267 Handler parameters were added.
14269 Completed another pass at removing warnings and issues when
14270 compiling with 64-bit compilers. The code now compiles cleanly
14271 with the Intel 64-bit C/C++ compiler. Most notably, the pointer
14272 add and subtract (diff) macros have changed considerably.
14275 Created and deployed a new ACPI_SIZE type that is 64-bits wide on
14276 64-bit platforms, 32-bits on all others. This type is used
14277 wherever memory allocation and/or the C sizeof() operator is used,
14278 and affects the OSL memory allocation interfaces AcpiOsAllocate
14279 and AcpiOsCallocate.
14281 Implemented sticky user breakpoints in the AML debugger.
14283 Code and Data Size: Current core subsystem library sizes are shown
14284 below. These are the code and data sizes for the acpica.lib
14285 produced by the Microsoft Visual C++ 6.0 compiler, and these
14286 values do not include any ACPI driver or OSPM code. The debug
14287 version of the code includes the debug output trace mechanism and
14288 has a larger code and data size. Note that these values will vary
14289 depending on the efficiency of the compiler and the compiler
14290 options used during generation.
14292 Previous Release (12_05_01)
14293 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
14294 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
14296 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
14297 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
14299 3) ASL Compiler, version X2034:
14301 Now checks for (and generates an error if detected) the use of a
14302 Break or Continue statement without an enclosing While statement.
14305 Successfully generated the compiler with the Intel 64-bit C
14308 ----------------------------------------
14309 Summary of changes for this label: 12_05_01
14311 1) ACPI CA Core Subsystem:
14313 The ACPI 2.0 CopyObject operator is fully implemented. This
14314 operator creates a new copy of an object (and is also used to
14315 bypass the "implicit conversion" mechanism of the Store operator.)
14317 The ACPI 2.0 semantics for the SizeOf operator are fully
14318 implemented. The change is that performing a SizeOf on a
14319 reference object causes an automatic dereference of the object to
14320 tha actual value before the size is evaluated. This behavior was
14321 undefined in ACPI 1.0.
14323 The ACPI 2.0 semantics for the Extended IRQ resource descriptor
14324 have been implemented. The interrupt polarity and mode are now
14327 Fixed a problem where ASL Constants (Zero, One, Ones, Revision)
14328 appearing in Package objects were not properly converted to
14329 integers when the internal Package was converted to an external
14330 object (via the AcpiEvaluateObject interface.)
14332 Fixed a problem with the namespace object deletion mechanism for
14333 objects created by control methods. There were two parts to this
14334 problem: 1) Objects created during the initialization phase method
14335 parse were not being deleted, and 2) The object owner ID mechanism
14336 to track objects was broken.
14338 Fixed a problem where the use of the ASL Scope operator within a
14339 control method would result in an invalid opcode exception.
14341 Fixed a problem introduced in the previous label where the buffer
14342 length required for the _PRT structure was not being returned
14345 Code and Data Size: Current core subsystem library sizes are shown
14346 below. These are the code and data sizes for the acpica.lib
14347 produced by the Microsoft Visual C++ 6.0 compiler, and these
14348 values do not include any ACPI driver or OSPM code. The debug
14349 version of the code includes the debug output trace mechanism and
14350 has a larger code and data size. Note that these values will vary
14351 depending on the efficiency of the compiler and the compiler
14352 options used during generation.
14354 Previous Release (11_20_01)
14355 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
14356 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
14359 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
14360 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
14364 Updated all files to apply cleanly against 2.4.16.
14366 Added basic PCI Interrupt Routing Table (PRT) support for IA32
14367 (acpi_pci.c), and unified the PRT code for IA32 and IA64. This
14368 version supports both static and dyanmic PRT entries, but dynamic
14369 entries are treated as if they were static (not yet
14370 reconfigurable). Architecture- specific code to use this data is
14371 absent on IA32 but should be available shortly.
14373 Changed the initialization sequence to start the ACPI interpreter
14374 (acpi_init) prior to initialization of the PCI driver (pci_init)
14375 in init/main.c. This ordering is required to support PRT and
14376 facilitate other (future) enhancement. A side effect is that the
14377 ACPI bus driver and certain device drivers can no longer be loaded
14380 Modified the 'make menuconfig' options to allow PCI Interrupt
14381 Routing support to be included without the ACPI Bus and other
14384 3) ASL Compiler, version X2033:
14386 Fixed some issues with the use of the new CopyObject and
14387 DataTableRegion operators. Both are fully functional.
14389 ----------------------------------------
14390 Summary of changes for this label: 11_20_01
14392 20 November 2001. Summary of changes for this release.
14394 1) ACPI CA Core Subsystem:
14396 Updated Index support to match ACPI 2.0 semantics. Storing a
14397 Integer, String, or Buffer to an Index of a Buffer will store only
14398 the least-significant byte of the source to the Indexed buffer
14399 byte. Multiple writes are not performed.
14401 Fixed a problem where the access type used in an AccessAs ASL
14402 operator was not recorded correctly into the field object.
14404 Fixed a problem where ASL Event objects were created in a
14405 signalled state. Events are now created in an unsignalled state.
14407 The internal object cache is now purged after table loading and
14408 initialization to reduce the use of dynamic kernel memory -- on
14409 the assumption that object use is greatest during the parse phase
14410 of the entire table (versus the run-time use of individual control
14413 ACPI 2.0 variable-length packages are now fully operational.
14415 Code and Data Size: Code and Data optimizations have permitted new
14416 feature development with an actual reduction in the library size.
14417 Current core subsystem library sizes are shown below. These are
14418 the code and data sizes for the acpica.lib produced by the
14419 Microsoft Visual C++ 6.0 compiler, and these values do not include
14420 any ACPI driver or OSPM code. The debug version of the code
14421 includes the debug output trace mechanism and has a larger code
14422 and data size. Note that these values will vary depending on the
14423 efficiency of the compiler and the compiler options used during
14426 Previous Release (11_09_01):
14427 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
14428 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
14431 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
14432 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
14436 Enhanced the ACPI boot-time initialization code to allow the use
14437 of Local APIC tables for processor enumeration on IA-32, and to
14438 pave the way for a fully MPS-free boot (on SMP systems) in the
14439 near future. This functionality replaces
14440 arch/i386/kernel/acpitables.c, which was introduced in an earlier
14441 2.4.15-preX release. To enable this feature you must add
14442 "acpi_boot=on" to the kernel command line -- see the help entry
14443 for CONFIG_ACPI_BOOT for more information. An IA-64 release is in
14446 Restructured the configuration options to allow boot-time table
14447 parsing support without inclusion of the ACPI Interpreter (and
14450 NOTE: This release does not include fixes for the reported events,
14451 power-down, and thermal passive cooling issues (coming soon).
14455 Added additional typechecking for Fields within restricted access
14456 Operation Regions. All fields within EC and CMOS regions must be
14457 declared with ByteAcc. All fields withing SMBus regions must be
14458 declared with the BufferAcc access type.
14460 Fixed a problem where the listing file output of control methods
14461 no longer interleaved the actual AML code with the ASL source
14467 ----------------------------------------
14468 Summary of changes for this label: 11_09_01
14470 1) ACPI CA Core Subsystem:
14472 Implemented ACPI 2.0-defined support for writes to fields with a
14473 Buffer, String, or Integer source operand that is smaller than the
14474 target field. In these cases, the source operand is zero-extended
14475 to fill the target field.
14477 Fixed a problem where a Field starting bit offset (within the
14478 parent operation region) was calculated incorrectly if the
14480 alignment of the field differed from the access width. This
14481 affected CreateWordField, CreateDwordField, CreateQwordField, and
14482 possibly other fields that use the "AccessAny" keyword.
14484 Fixed a problem introduced in the 11_02_01 release where indirect
14485 stores through method arguments did not operate correctly.
14489 Implemented boot-time ACPI table parsing support
14490 (CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code
14491 facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than
14492 legacy BIOS interfaces (e.g. MPS) for the configuration of system
14493 processors, memory, and interrupts during setup_arch(). Note that
14494 this patch does not include the required architecture-specific
14495 changes required to apply this information -- subsequent patches
14496 will be posted for both IA32 and IA64 to achieve this.
14498 Added low-level sleep support for IA32 platforms, courtesy of Pat
14499 Mochel. This allows IA32 systems to transition to/from various
14500 sleeping states (e.g. S1, S3), although the lack of a centralized
14501 driver model and power-manageable drivers will prevent its
14502 (successful) use on most systems.
14504 Revamped the ACPI 'menuconfig' layout: created new "ACPI Support"
14505 submenu, unified IA32 and IA64 options, added new "Boot using ACPI
14506 tables" option, etc.
14508 Increased the default timeout for the EC driver from 1ms to 10ms
14509 (1000 cycles of 10us) to try to address AE_TIME errors during EC
14512 ----------------------------------------
14513 Summary of changes for this label: 11_02_01
14515 1) ACPI CA Core Subsystem:
14517 ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access
14518 (QWordAcc keyword). All ACPI 2.0 64-bit support is now
14521 OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required
14522 changes to support ACPI 2.0 Qword field access. Read/Write
14523 PciConfiguration(), Read/Write Memory(), and Read/Write Port() now
14524 accept an ACPI_INTEGER (64 bits) as the value parameter. Also,
14525 the value parameter for the address space handler interface is now
14526 an ACPI_INTEGER. OSL implementations of these interfaces must now
14527 handle the case where the Width parameter is 64.
14529 Index Fields: Fixed a problem where unaligned bit assembly and
14530 disassembly for IndexFields was not supported correctly.
14532 Index and Bank Fields: Nested Index and Bank Fields are now
14533 supported. During field access, a check is performed to ensure
14534 that the value written to an Index or Bank register is not out of
14535 the range of the register. The Index (or Bank) register is
14536 written before each access to the field data. Future support will
14537 include allowing individual IndexFields to be wider than the
14538 DataRegister width.
14540 Fields: Fixed a problem where the AML interpreter was incorrectly
14541 attempting to write beyond the end of a Field/OpRegion. This was
14542 a boundary case that occurred when a DWORD field was written to a
14543 BYTE access OpRegion, forcing multiple writes and causing the
14544 interpreter to write one datum too many.
14546 Fields: Fixed a problem with Field/OpRegion access where the
14547 starting bit address of a field was incorrectly calculated if the
14548 current access type was wider than a byte (WordAcc, DwordAcc, or
14551 Fields: Fixed a problem where forward references to individual
14552 FieldUnits (individual Field names within a Field definition) were
14553 not resolved during the AML table load.
14555 Fields: Fixed a problem where forward references from a Field
14556 definition to the parent Operation Region definition were not
14557 resolved during the AML table load.
14559 Fields: Duplicate FieldUnit names within a scope are now detected
14560 during AML table load.
14562 Acpi Interfaces: Fixed a problem where the AcpiGetName() interface
14563 returned an incorrect name for the root node.
14565 Code and Data Size: Code and Data optimizations have permitted new
14566 feature development with an actual reduction in the library size.
14567 Current core subsystem library sizes are shown below. These are
14568 the code and data sizes for the acpica.lib produced by the
14569 Microsoft Visual C++ 6.0 compiler, and these values do not include
14570 any ACPI driver or OSPM code. The debug version of the code
14571 includes the debug output trace mechanism and has a larger code
14572 and data size. Note that these values will vary depending on the
14573 efficiency of the compiler and the compiler options used during
14576 Previous Release (10_18_01):
14577 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
14578 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
14581 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
14582 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
14586 Improved /proc processor output (Pavel Machek) Re-added
14587 MODULE_LICENSE("GPL") to all modules.
14589 3) ASL Compiler version X2030:
14591 Duplicate FieldUnit names within a scope are now detected and
14596 Programmer Reference updated to reflect OSL and address space
14597 handler interface changes described above.
14599 ----------------------------------------
14600 Summary of changes for this label: 10_18_01
14602 ACPI CA Core Subsystem:
14604 Fixed a problem with the internal object reference count mechanism
14605 that occasionally caused premature object deletion. This resolves
14606 all of the outstanding problem reports where an object is deleted
14607 in the middle of an interpreter evaluation. Although this problem
14608 only showed up in rather obscure cases, the solution to the
14609 problem involved an adjustment of all reference counts involving
14610 objects attached to namespace nodes.
14612 Fixed a problem with Field support in the interpreter where
14613 writing to an aligned field whose length is an exact multiple (2
14614 or greater) of the field access granularity would cause an attempt
14615 to write beyond the end of the field.
14617 The top level AML opcode execution functions within the
14618 interpreter have been renamed with a more meaningful and
14619 consistent naming convention. The modules exmonad.c and
14620 exdyadic.c were eliminated. New modules are exoparg1.c,
14621 exoparg2.c, exoparg3.c, and exoparg6.c.
14623 Support for the ACPI 2.0 "Mid" ASL operator has been implemented.
14625 Fixed a problem where the AML debugger was causing some internal
14626 objects to not be deleted during subsystem termination.
14628 Fixed a problem with the external AcpiEvaluateObject interface
14629 where the subsystem would fault if the named object to be
14630 evaluated refered to a constant such as Zero, Ones, etc.
14632 Fixed a problem with IndexFields and BankFields where the
14633 subsystem would fault if the index, data, or bank registers were
14634 not defined in the same scope as the field itself.
14636 Added printf format string checking for compilers that support
14637 this feature. Corrected more than 50 instances of issues with
14638 format specifiers within invocations of ACPI_DEBUG_PRINT
14639 throughout the core subsystem code.
14641 The ASL "Revision" operator now returns the ACPI support level
14642 implemented in the core - the value "2" since the ACPI 2.0 support
14643 is more than 50% implemented.
14645 Enhanced the output of the AML debugger "dump namespace" command
14646 to output in a more human-readable form.
14648 Current core subsystem library code sizes are shown below. These
14650 are the code and data sizes for the acpica.lib produced by the
14651 Microsoft Visual C++ 6.0 compiler, and these values do not include
14652 any ACPI driver or OSPM code. The debug version of the code
14653 includes the full debug trace mechanism -- leading to a much
14655 larger code and data size. Note that these values will vary
14656 depending on the efficiency of the compiler and the compiler
14657 options used during generation.
14659 Previous Label (09_20_01):
14660 Non-Debug Version: 65K Code, 5K Data, 70K Total
14661 Debug Version: 138K Code, 58K Data, 196K Total
14665 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
14666 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
14670 Implemented a "Bad BIOS Blacklist" to track machines that have
14671 known ASL/AML problems.
14673 Enhanced the /proc interface for the thermal zone driver and added
14674 support for _HOT (the critical suspend trip point). The 'info'
14675 file now includes threshold/policy information, and allows setting
14676 of _SCP (cooling preference) and _TZP (polling frequency) values
14677 to the 'info' file. Examples: "echo tzp=5 > info" sets the polling
14678 frequency to 5 seconds, and "echo scp=1 > info" sets the cooling
14679 preference to the passive/quiet mode (if supported by the ASL).
14681 Implemented a workaround for a gcc bug that resuted in an OOPs
14682 when loading the control method battery driver.
14684 ----------------------------------------
14685 Summary of changes for this label: 09_20_01
14687 ACPI CA Core Subsystem:
14689 The AcpiEnableEvent and AcpiDisableEvent interfaces have been
14690 modified to allow individual GPE levels to be flagged as wake-
14691 enabled (i.e., these GPEs are to remain enabled when the platform
14694 The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now
14695 support wake-enabled GPEs. This means that upon entering the
14696 sleep state, all GPEs that are not wake-enabled are disabled.
14697 When leaving the sleep state, these GPEs are reenabled.
14699 A local double-precision divide/modulo module has been added to
14700 enhance portability to OS kernels where a 64-bit math library is
14701 not available. The new module is "utmath.c".
14703 Several optimizations have been made to reduce the use of CPU
14704 stack. Originally over 2K, the maximum stack usage is now below
14705 2K at 1860 bytes (1.82k)
14707 Fixed a problem with the AcpiGetFirmwareTable interface where the
14708 root table pointer was not mapped into a logical address properly.
14710 Fixed a problem where a NULL pointer was being dereferenced in the
14711 interpreter code for the ASL Notify operator.
14713 Fixed a problem where the use of the ASL Revision operator
14714 returned an error. This operator now returns the current version
14715 of the ACPI CA core subsystem.
14717 Fixed a problem where objects passed as control method parameters
14718 to AcpiEvaluateObject were always deleted at method termination.
14719 However, these objects may end up being stored into the namespace
14720 by the called method. The object reference count mechanism was
14721 applied to these objects instead of a force delete.
14723 Fixed a problem where static strings or buffers (contained in the
14724 AML code) that are declared as package elements within the ASL
14725 code could cause a fault because the interpreter would attempt to
14726 delete them. These objects are now marked with the "static
14727 object" flag to prevent any attempt to delete them.
14729 Implemented an interpreter optimization to use operands directly
14730 from the state object instead of extracting the operands to local
14731 variables. This reduces stack use and code size, and improves
14734 The module exxface.c was eliminated as it was an unnecessary extra
14737 Current core subsystem library code sizes are shown below. These
14738 are the code and data sizes for the acpica.lib produced by the
14739 Microsoft Visual C++ 6.0 compiler, and these values do not include
14740 any ACPI driver or OSPM code. The debug version of the code
14741 includes the full debug trace mechanism -- leading to a much
14742 larger code and data size. Note that these values will vary
14743 depending on the efficiency of the compiler and the compiler
14744 options used during generation.
14746 Non-Debug Version: 65K Code, 5K Data, 70K Total
14747 (Previously 69K) Debug Version: 138K Code, 58K Data, 196K
14748 Total (Previously 195K)
14752 Support for ACPI 2.0 64-bit integers has been added. All ACPI
14753 Integer objects are now 64 bits wide
14755 All Acpi data types and structures are now in lower case. Only
14756 Acpi macros are upper case for differentiation.
14760 Changes to the external interfaces as described above.
14762 ----------------------------------------
14763 Summary of changes for this label: 08_31_01
14765 ACPI CA Core Subsystem:
14767 A bug with interpreter implementation of the ASL Divide operator
14768 was found and fixed. The implicit function return value (not the
14769 explicit store operands) was returning the remainder instead of
14770 the quotient. This was a longstanding bug and it fixes several
14771 known outstanding issues on various platforms.
14773 The ACPI_DEBUG_PRINT and function trace entry/exit macros have
14774 been further optimized for size. There are 700 invocations of the
14775 DEBUG_PRINT macro alone, so each optimization reduces the size of
14776 the debug version of the subsystem significantly.
14778 A stack trace mechanism has been implemented. The maximum stack
14779 usage is about 2K on 32-bit platforms. The debugger command "stat
14780 stack" will display the current maximum stack usage.
14782 All public symbols and global variables within the subsystem are
14783 now prefixed with the string "Acpi". This keeps all of the
14784 symbols grouped together in a kernel map, and avoids conflicts
14785 with other kernel subsystems.
14787 Most of the internal fixed lookup tables have been moved into the
14788 code segment via the const operator.
14790 Several enhancements have been made to the interpreter to both
14791 reduce the code size and improve performance.
14793 Current core subsystem library code sizes are shown below. These
14794 are the code and data sizes for the acpica.lib produced by the
14795 Microsoft Visual C++ 6.0 compiler, and these values do not include
14796 any ACPI driver or OSPM code. The debug version of the code
14797 includes the full debug trace mechanism which contains over 700
14798 invocations of the DEBUG_PRINT macro, 500 function entry macro
14799 invocations, and over 900 function exit macro invocations --
14800 leading to a much larger code and data size. Note that these
14801 values will vary depending on the efficiency of the compiler and
14802 the compiler options used during generation.
14804 Non-Debug Version: 64K Code, 5K Data, 69K Total
14805 Debug Version: 137K Code, 58K Data, 195K Total
14809 Implemented wbinvd() macro, pending a kernel-wide definition.
14811 Fixed /proc/acpi/event to handle poll() and short reads.
14813 ASL Compiler, version X2026:
14815 Fixed a problem introduced in the previous label where the AML
14817 code emitted for package objects produced packages with zero
14820 ----------------------------------------
14821 Summary of changes for this label: 08_16_01
14823 ACPI CA Core Subsystem:
14825 The following ACPI 2.0 ASL operators have been implemented in the
14826 AML interpreter (These are already supported by the Intel ASL
14827 compiler): ToDecimalString, ToHexString, ToString, ToInteger, and
14828 ToBuffer. Support for 64-bit AML constants is implemented in the
14829 AML parser, debugger, and disassembler.
14831 The internal memory tracking mechanism (leak detection code) has
14832 been upgraded to reduce the memory overhead (a separate tracking
14833 block is no longer allocated for each memory allocation), and now
14834 supports all of the internal object caches.
14836 The data structures and code for the internal object caches have
14837 been coelesced and optimized so that there is a single cache and
14838 memory list data structure and a single group of functions that
14839 implement generic cache management. This has reduced the code
14840 size in both the debug and release versions of the subsystem.
14842 The DEBUG_PRINT macro(s) have been optimized for size and replaced
14843 by ACPI_DEBUG_PRINT. The syntax for this macro is slightly
14844 different, because it generates a single call to an internal
14845 function. This results in a savings of about 90 bytes per
14846 invocation, resulting in an overall code and data savings of about
14847 16% in the debug version of the subsystem.
14851 Fixed C3 disk corruption problems and re-enabled C3 on supporting
14854 Integrated low-level sleep code by Patrick Mochel.
14856 Further tweaked source code Linuxization.
14862 Support for ACPI 2.0 variable length packages is fixed/completed.
14864 Fixed a problem where the optional length parameter for the ACPI
14865 2.0 ToString operator.
14867 Fixed multiple extraneous error messages when a syntax error is
14868 detected within the declaration line of a control method.
14870 ----------------------------------------
14871 Summary of changes for this label: 07_17_01
14873 ACPI CA Core Subsystem:
14875 Added a new interface named AcpiGetFirmwareTable to obtain any
14876 ACPI table via the ACPI signature. The interface can be called at
14877 any time during kernel initialization, even before the kernel
14878 virtual memory manager is initialized and paging is enabled. This
14879 allows kernel subsystems to obtain ACPI tables very early, even
14880 before the ACPI CA subsystem is initialized.
14882 Fixed a problem where Fields defined with the AnyAcc attribute
14883 could be resolved to the incorrect address under the following
14884 conditions: 1) the field width is larger than 8 bits and 2) the
14885 parent operation region is not defined on a DWORD boundary.
14887 Fixed a problem where the interpreter is not being locked during
14888 namespace initialization (during execution of the _INI control
14889 methods), causing an error when an attempt is made to release it
14892 ACPI 2.0 support in the AML Interpreter has begun and will be
14893 ongoing throughout the rest of this year. In this label, The Mod
14894 operator is implemented.
14896 Added a new data type to contain full PCI addresses named
14897 ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device,
14898 and Function values.
14902 Enhanced the Linux version of the source code to change most
14903 capitalized ACPI type names to lowercase. For example, all
14904 instances of ACPI_STATUS are changed to acpi_status. This will
14905 result in a large diff, but the change is strictly cosmetic and
14906 aligns the CA code closer to the Linux coding standard.
14910 The interfaces to the PCI configuration space have been changed to
14911 add the PCI Segment number and to split the single 32-bit combined
14912 DeviceFunction field into two 16-bit fields. This was
14913 accomplished by moving the four values that define an address in
14914 PCI configuration space (segment, bus, device, and function) to
14915 the new ACPI_PCI_ID structure.
14917 The changes to the PCI configuration space interfaces led to a
14918 reexamination of the complete set of address space access
14919 interfaces for PCI, I/O, and Memory. The previously existing 18
14920 interfaces have proven difficult to maintain (any small change
14921 must be propagated across at least 6 interfaces) and do not easily
14922 allow for future expansion to 64 bits if necessary. Also, on some
14923 systems, it would not be appropriate to demultiplex the access
14924 width (8, 16, 32,or 64) before calling the OSL if the
14925 corresponding native OS interfaces contain a similar access width
14926 parameter. For these reasons, the 18 address space interfaces
14927 have been replaced by these 6 new ones:
14929 AcpiOsReadPciConfiguration
14930 AcpiOsWritePciConfiguration
14936 Added a new interface named AcpiOsGetRootPointer to allow the OSL
14937 to perform the platform and/or OS-specific actions necessary to
14938 obtain the ACPI RSDP table pointer. On IA-32 platforms, this
14939 interface will simply call down to the CA core to perform the low-
14940 memory search for the table. On IA-64, the RSDP is obtained from
14941 EFI. Migrating this interface to the OSL allows the CA core to
14943 remain OS and platform independent.
14945 Added a new interface named AcpiOsSignal to provide a generic
14946 "function code and pointer" interface for various miscellaneous
14947 signals and notifications that must be made to the host OS. The
14948 first such signals are intended to support the ASL Fatal and
14949 Breakpoint operators. In the latter case, the AcpiOsBreakpoint
14950 interface has been obsoleted.
14952 The definition of the AcpiFormatException interface has been
14953 changed to simplify its use. The caller no longer must supply a
14954 buffer to the call; A pointer to a const string is now returned
14955 directly. This allows the call to be easily used in printf
14956 statements, etc. since the caller does not have to manage a local
14960 ASL Compiler, Version X2025:
14962 The ACPI 2.0 Switch/Case/Default operators have been implemented
14963 and are fully functional. They will work with all ACPI 1.0
14964 interpreters, since the operators are simply translated to If/Else
14967 The ACPI 2.0 ElseIf operator is implemented and will also work
14968 with 1.0 interpreters, for the same reason.
14970 Implemented support for ACPI 2.0 variable-length packages. These
14971 packages have a separate opcode, and their size is determined by
14972 the interpreter at run-time.
14974 Documentation The ACPI CA Programmer Reference has been updated to
14975 reflect the new interfaces and changes to existing interfaces.
14977 ------------------------------------------
14978 Summary of changes for this label: 06_15_01
14980 ACPI CA Core Subsystem:
14982 Fixed a problem where a DWORD-accessed field within a Buffer
14983 object would get its byte address inadvertently rounded down to
14984 the nearest DWORD. Buffers are always Byte-accessible.
14986 ASL Compiler, version X2024:
14988 Fixed a problem where the Switch() operator would either fault or
14989 hang the compiler. Note however, that the AML code for this ACPI
14990 2.0 operator is not yet implemented.
14992 Compiler uses the new AcpiOsGetTimer interface to obtain compile
14995 Implementation of the CreateField operator automatically converts
14996 a reference to a named field within a resource descriptor from a
14997 byte offset to a bit offset if required.
14999 Added some missing named fields from the resource descriptor
15000 support. These are the names that are automatically created by the
15001 compiler to reference fields within a descriptor. They are only
15002 valid at compile time and are not passed through to the AML
15005 Resource descriptor named fields are now typed as Integers and
15006 subject to compile-time typechecking when used in expressions.
15008 ------------------------------------------
15009 Summary of changes for this label: 05_18_01
15011 ACPI CA Core Subsystem:
15013 Fixed a couple of problems in the Field support code where bits
15014 from adjacent fields could be returned along with the proper field
15015 bits. Restructured the field support code to improve performance,
15016 readability and maintainability.
15018 New DEBUG_PRINTP macro automatically inserts the procedure name
15019 into the output, saving hundreds of copies of procedure name
15020 strings within the source, shrinking the memory footprint of the
15021 debug version of the core subsystem.
15023 Source Code Structure:
15025 The source code directory tree was restructured to reflect the
15026 current organization of the component architecture. Some files
15027 and directories have been moved and/or renamed.
15031 Fixed leaking kacpidpc processes.
15033 Fixed queueing event data even when /proc/acpi/event is not
15036 ASL Compiler, version X2020:
15038 Memory allocation performance enhancement - over 24X compile time
15039 improvement on large ASL files. Parse nodes and namestring
15040 buffers are now allocated from a large internal compiler buffer.
15042 The temporary .SRC file is deleted unless the "-s" option is
15045 The "-d" debug output option now sends all output to the .DBG file
15046 instead of the console.
15048 "External" second parameter is now optional
15050 "ElseIf" syntax now properly allows the predicate
15052 Last operand to "Load" now recognized as a Target operand
15054 Debug object can now be used anywhere as a normal object.
15056 ResourceTemplate now returns an object of type BUFFER
15058 EISAID now returns an object of type INTEGER
15060 "Index" now works with a STRING operand
15062 "LoadTable" now accepts optional parameters
15064 "ToString" length parameter is now optional
15066 "Interrupt (ResourceType," parse error fixed.
15068 "Register" with a user-defined region space parse error fixed
15070 Escaped backslash at the end of a string ("\\") scan/parse error
15073 "Revision" is now an object of type INTEGER.
15077 ------------------------------------------
15078 Summary of changes for this label: 05_02_01
15082 /proc/acpi/event now blocks properly.
15084 Removed /proc/sys/acpi. You can still dump your DSDT from
15087 ACPI CA Core Subsystem:
15089 Fixed a problem introduced in the previous label where some of the
15090 "small" resource descriptor types were not recognized.
15092 Improved error messages for the case where an ASL Field is outside
15093 the range of the parent operation region.
15095 ASL Compiler, version X2018:
15098 Added error detection for ASL Fields that extend beyond the length
15099 of the parent operation region (only if the length of the region
15100 is known at compile time.) This includes fields that have a
15101 minimum access width that is smaller than the parent region, and
15102 individual field units that are partially or entirely beyond the
15103 extent of the parent.
15107 ------------------------------------------
15108 Summary of changes for this label: 04_27_01
15110 ACPI CA Core Subsystem:
15112 Fixed a problem where the namespace mutex could be released at the
15113 wrong time during execution of AcpiRemoveAddressSpaceHandler.
15115 Added optional thread ID output for debug traces, to simplify
15116 debugging of multiple threads. Added context switch notification
15117 when the debug code realizes that a different thread is now
15118 executing ACPI code.
15120 Some additional external data types have been prefixed with the
15121 string "ACPI_" for consistency. This may effect existing code.
15122 The data types affected are the external callback typedefs - e.g.,
15124 WALK_CALLBACK becomes ACPI_WALK_CALLBACK.
15128 Fixed an issue with the OSL semaphore implementation where a
15129 thread was waking up with an error from receiving a SIGCHLD
15132 Linux version of ACPI CA now uses the system C library for string
15133 manipulation routines instead of a local implementation.
15135 Cleaned up comments and removed TBDs.
15137 ASL Compiler, version X2017:
15139 Enhanced error detection and reporting for all file I/O
15144 Programmer Reference updated to version 1.06.
15148 ------------------------------------------
15149 Summary of changes for this label: 04_13_01
15151 ACPI CA Core Subsystem:
15153 Restructured support for BufferFields and RegionFields.
15154 BankFields support is now fully operational. All known 32-bit
15155 limitations on field sizes have been removed. Both BufferFields
15156 and (Operation) RegionFields are now supported by the same field
15159 Resource support now supports QWORD address and IO resources. The
15160 16/32/64 bit address structures and the Extended IRQ structure
15161 have been changed to properly handle Source Resource strings.
15163 A ThreadId of -1 is now used to indicate a "mutex not acquired"
15164 condition internally and must never be returned by AcpiOsThreadId.
15165 This reserved value was changed from 0 since Unix systems allow a
15170 Driver code reorganized to enhance portability
15172 Added a kernel configuration option to control ACPI_DEBUG
15174 Fixed the EC driver to honor _GLK.
15176 ASL Compiler, version X2016:
15178 Fixed support for the "FixedHw" keyword. Previously, the FixedHw
15179 address space was set to 0, not 0x7f as it should be.
15181 ------------------------------------------
15182 Summary of changes for this label: 03_13_01
15184 ACPI CA Core Subsystem:
15186 During ACPI initialization, the _SB_._INI method is now run if
15189 Notify handler fix - notifies are deferred until the parent method
15190 completes execution. This fixes the "mutex already acquired"
15191 issue seen occasionally.
15193 Part of the "implicit conversion" rules in ACPI 2.0 have been
15194 found to cause compatibility problems with existing ASL/AML. The
15195 convert "result-to-target-type" implementation has been removed
15196 for stores to method Args and Locals. Source operand conversion
15197 is still fully implemented. Possible changes to ACPI 2.0
15198 specification pending.
15200 Fix to AcpiRsCalculatePciRoutingTableLength to return correct
15203 Fix for compiler warnings for 64-bit compiles.
15207 /proc output aligned for easier parsing.
15209 Release-version compile problem fixed.
15211 New kernel configuration options documented in Configure.help.
15213 IBM 600E - Fixed Sleep button may generate "Invalid <NULL>
15218 Power resource driver integrated with bus manager.
15220 Fixed kernel fault during active cooling for thermal zones.
15224 The source code tree has been restructured.
15228 ------------------------------------------
15229 Summary of changes for this label: 03_02_01
15231 Linux OS Services Layer (OSL):
15233 Major revision of all Linux-specific code.
15235 Modularized all ACPI-specific drivers.
15237 Added new thermal zone and power resource drivers.
15239 Revamped /proc interface (new functionality is under /proc/acpi).
15241 New kernel configuration options.
15243 Linux known issues:
15245 New kernel configuration options not documented in Configure.help
15249 Module dependencies not currently implemented. If used, they
15250 should be loaded in this order: busmgr, power, ec, system,
15251 processor, battery, ac_adapter, button, thermal.
15253 Modules will not load if CONFIG_MODVERSION is set.
15255 IBM 600E - entering S5 may reboot instead of shutting down.
15257 IBM 600E - Sleep button may generate "Invalid <NULL> context"
15260 Some systems may fail with "execution mutex already acquired"
15263 ACPI CA Core Subsystem:
15265 Added a new OSL Interface, AcpiOsGetThreadId. This was required
15266 for the deadlock detection code. Defined to return a non-zero, 32-
15267 bit thread ID for the currently executing thread. May be a non-
15268 zero constant integer on single-thread systems.
15270 Implemented deadlock detection for internal subsystem mutexes. We
15271 may add conditional compilation for this code (debug only) later.
15273 ASL/AML Mutex object semantics are now fully supported. This
15274 includes multiple acquires/releases by owner and support for the
15276 Mutex SyncLevel parameter.
15278 A new "Force Release" mechanism automatically frees all ASL
15279 Mutexes that have been acquired but not released when a thread
15280 exits the interpreter. This forces conformance to the ACPI spec
15281 ("All mutexes must be released when an invocation exits") and
15282 prevents deadlocked ASL threads. This mechanism can be expanded
15283 (later) to monitor other resource acquisitions if OEM ASL code
15284 continues to misbehave (which it will).
15286 Several new ACPI exception codes have been added for the Mutex
15289 Recursive method calls are now allowed and supported (the ACPI
15290 spec does in fact allow recursive method calls.) The number of
15291 recursive calls is subject to the restrictions imposed by the
15292 SERIALIZED method keyword and SyncLevel (ACPI 2.0) method
15295 Implemented support for the SyncLevel parameter for control
15296 methods (ACPI 2.0 feature)
15298 Fixed a deadlock problem when multiple threads attempted to use
15301 Fixed a problem where the string length of a String package
15302 element was not always set in a package returned from
15303 AcpiEvaluateObject.
15305 Fixed a problem where the length of a String package element was
15306 not always included in the length of the overall package returned
15307 from AcpiEvaluateObject.
15309 Added external interfaces (Acpi*) to the ACPI debug memory
15310 manager. This manager keeps a list of all outstanding
15311 allocations, and can therefore detect memory leaks and attempts to
15312 free memory blocks more than once. Useful for code such as the
15313 power manager, etc. May not be appropriate for device drivers.
15314 Performance with the debug code enabled is slow.
15316 The ACPI Global Lock is now an optional hardware element.
15318 ASL Compiler Version X2015:
15320 Integrated changes to allow the compiler to be generated on
15321 multiple platforms.
15323 Linux makefile added to generate the compiler on Linux
15327 All platform-specific headers have been moved to their own
15328 subdirectory, Include/Platform.
15330 New source file added, Interpreter/ammutex.c
15332 New header file, Include/acstruct.h
15336 The programmer reference has been updated for the following new
15337 interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree
15339 ------------------------------------------
15340 Summary of changes for this label: 02_08_01
15342 Core ACPI CA Subsystem: Fixed a problem where an error was
15343 incorrectly returned if the return resource buffer was larger than
15344 the actual data (in the resource interfaces).
15346 References to named objects within packages are resolved to the
15348 full pathname string before packages are returned directly (via
15349 the AcpiEvaluateObject interface) or indirectly via the resource
15352 Linux OS Services Layer (OSL):
15354 Improved /proc battery interface.
15357 Added C-state debugging output and other miscellaneous fixes.
15359 ASL Compiler Version X2014:
15361 All defined method arguments can now be used as local variables,
15362 including the ones that are not actually passed in as parameters.
15363 The compiler tracks initialization of the arguments and issues an
15364 exception if they are used without prior assignment (just like
15367 The -o option now specifies a filename prefix that is used for all
15368 output files, including the AML output file. Otherwise, the
15369 default behavior is as follows: 1) the AML goes to the file
15370 specified in the DSDT. 2) all other output files use the input
15371 source filename as the base.
15373 ------------------------------------------
15374 Summary of changes for this label: 01_25_01
15376 Core ACPI CA Subsystem: Restructured the implementation of object
15377 store support within the interpreter. This includes support for
15378 the Store operator as well as any ASL operators that include a
15381 Partially implemented support for Implicit Result-to-Target
15382 conversion. This is when a result object is converted on the fly
15383 to the type of an existing target object. Completion of this
15384 support is pending further analysis of the ACPI specification
15385 concerning this matter.
15387 CPU-specific code has been removed from the subsystem (hardware
15390 New Power Management Timer functions added
15392 Linux OS Services Layer (OSL): Moved system state transition code
15393 to the core, fixed it, and modified Linux OSL accordingly.
15395 Fixed C2 and C3 latency calculations.
15398 We no longer use the compilation date for the version message on
15399 initialization, but retrieve the version from AcpiGetSystemInfo().
15401 Incorporated for fix Sony VAIO machines.
15403 Documentation: The Programmer Reference has been updated and
15407 ASL Compiler: Version X2013: Fixed a problem where the line
15408 numbering and error reporting could get out of sync in the
15409 presence of multiple include files.
15411 ------------------------------------------
15412 Summary of changes for this label: 01_15_01
15414 Core ACPI CA Subsystem:
15416 Implemented support for type conversions in the execution of the
15417 ASL Concatenate operator (The second operand is converted to
15418 match the type of the first operand before concatenation.)
15420 Support for implicit source operand conversion is partially
15421 implemented. The ASL source operand types Integer, Buffer, and
15422 String are freely interchangeable for most ASL operators and are
15423 converted by the interpreter on the fly as required. Implicit
15424 Target operand conversion (where the result is converted to the
15425 target type before storing) is not yet implemented.
15427 Support for 32-bit and 64-bit BCD integers is implemented.
15429 Problem fixed where a field read on an aligned field could cause a
15430 read past the end of the field.
15432 New exception, AE_AML_NO_RETURN_VALUE, is returned when a method
15433 does not return a value, but the caller expects one. (The ASL
15434 compiler flags this as a warning.)
15439 1. Static typechecking of all operands is implemented. This
15440 prevents the use of invalid objects (such as using a Package where
15441 an Integer is required) at compile time instead of at interpreter
15443 2. The ASL source line is printed with ALL errors and warnings.
15444 3. Bug fix for source EOF without final linefeed.
15445 4. Debug option is split into a parse trace and a namespace trace.
15446 5. Namespace output option (-n) includes initial values for
15447 integers and strings.
15448 6. Parse-only option added for quick syntax checking.
15449 7. Compiler checks for duplicate ACPI name declarations
15452 1. Relaxed typechecking to allow interchangeability between
15453 strings, integers, and buffers. These types are now converted by
15454 the interpreter at runtime.
15455 2. Compiler reports time taken by each internal subsystem in the
15459 ------------------------------------------
15460 Summary of changes for this label: 12_14_00
15464 This is the first official release of the compiler. Since the
15465 compiler requires elements of the Core Subsystem, this label
15466 synchronizes everything.
15468 ------------------------------------------
15469 Summary of changes for this label: 12_08_00
15472 Fixed a problem where named references within the ASL definition
15473 of both OperationRegions and CreateXXXFields did not work
15474 properly. The symptom was an AE_AML_OPERAND_TYPE during
15475 initialization of the region/field. This is similar (but not
15476 related internally) to the problem that was fixed in the last
15479 Implemented both 32-bit and 64-bit support for the BCD ASL
15480 functions ToBCD and FromBCD.
15482 Updated all legal headers to include "2000" in the copyright
15485 ------------------------------------------
15486 Summary of changes for this label: 12_01_00
15488 Fixed a problem where method invocations within the ASL definition
15489 of both OperationRegions and CreateXXXFields did not work
15490 properly. The symptom was an AE_AML_OPERAND_TYPE during
15491 initialization of the region/field:
15493 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments
15494 [DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s)
15497 Fixed a problem where operators with more than one nested
15498 subexpression would fail. The symptoms were varied, by mostly
15499 AE_AML_OPERAND_TYPE errors. This was actually a rather serious
15500 problem that has gone unnoticed until now.
15502 Subtract (Add (1,2), Multiply (3,4))
15504 Fixed a problem where AcpiGetHandle didn't quite get fixed in the
15505 previous build (The prefix part of a relative path was handled
15508 Fixed a problem where Operation Region initialization failed if
15509 the operation region name was a "namepath" instead of a simple
15510 "nameseg". Symptom was an AE_NO_OPERAND error.
15512 Fixed a problem where an assignment to a local variable via the
15513 indirect RefOf mechanism only worked for the first such
15514 assignment. Subsequent assignments were ignored.
15516 ------------------------------------------
15517 Summary of changes for this label: 11_15_00
15519 ACPI 2.0 table support with backwards support for ACPI 1.0 and the
15520 0.71 extensions. Note: although we can read ACPI 2.0 BIOS tables,
15521 the AML interpreter does NOT have support for the new 2.0 ASL
15522 grammar terms at this time.
15524 All ACPI hardware access is via the GAS structures in the ACPI 2.0
15527 All physical memory addresses across all platforms are now 64 bits
15528 wide. Logical address width remains dependent on the platform
15531 AcpiOsMapMemory interface changed to a 64-bit physical address.
15533 The AML interpreter integer size is now 64 bits, as per the ACPI
15536 For backwards compatibility with ACPI 1.0, ACPI tables with a
15537 revision number less than 2 use 32-bit integers only.
15539 Fixed a problem where the evaluation of OpRegion operands did not
15540 always resolve them to numbers properly.
15542 ------------------------------------------
15543 Summary of changes for this label: 10_20_00
15545 Fix for CBN_._STA issue. This fix will allow correct access to
15546 CBN_ OpRegions when the _STA returns 0x8.
15548 Support to convert ACPI constants (Ones, Zeros, One) to actual
15549 values before a package object is returned
15551 Fix for method call as predicate to if/while construct causing
15552 incorrect if/while behavior
15554 Fix for Else block package lengths sometimes calculated wrong (if
15557 Fix for Processor object length field, was always zero
15559 Table load abort if FACP sanity check fails
15561 Fix for problem with Scope(name) if name already exists
15563 Warning emitted if a named object referenced cannot be found
15564 (resolved) during method execution.
15570 ------------------------------------------
15571 Summary of changes for this label: 9_29_00
15573 New table initialization interfaces: AcpiInitializeSubsystem no
15574 longer has any parameters AcpiFindRootPointer - Find the RSDP (if
15575 necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP-
15576 >RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by
15579 Note: These interface changes require changes to all existing OSDs
15581 The PCI_Config default address space handler is always installed
15582 at the root namespace object.
15584 -------------------------------------------
15585 Summary of changes for this label: 09_15_00
15587 The new initialization architecture is implemented. New
15588 interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize)
15589 AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace
15591 (Namespace is automatically loaded when a table is loaded)
15593 The ACPI_OPERAND_OBJECT has been optimized to shrink its size from
15594 52 bytes to 32 bytes. There is usually one of these for every
15595 namespace object, so the memory savings is significant.
15597 Implemented just-in-time evaluation of the CreateField operators.
15599 Bug fixes for IA-64 support have been integrated.
15601 Additional code review comments have been implemented
15603 The so-called "third pass parse" has been replaced by a final walk
15604 through the namespace to initialize all operation regions (address
15605 spaces) and fields that have not yet been initialized during the
15606 execution of the various _INI and REG methods.
15608 New file - namespace/nsinit.c
15610 -------------------------------------------
15611 Summary of changes for this label: 09_01_00
15613 Namespace manager data structures have been reworked to change the
15614 primary object from a table to a single object. This has
15615 resulted in dynamic memory savings of 3X within the namespace and
15616 2X overall in the ACPI CA subsystem.
15618 Fixed problem where the call to AcpiEvFindPciRootBuses was
15619 inadvertently left commented out.
15621 Reduced the warning count when generating the source with the GCC
15624 Revision numbers added to each module header showing the
15625 SourceSafe version of the file. Please refer to this version
15626 number when giving us feedback or comments on individual modules.
15628 The main object types within the subsystem have been renamed to
15629 clarify their purpose:
15631 ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT
15632 ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT
15633 ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE
15635 NOTE: no changes to the initialization sequence are included in
15638 -------------------------------------------
15639 Summary of changes for this label: 08_23_00
15641 Fixed problem where TerminateControlMethod was being called
15642 multiple times per method
15644 Fixed debugger problem where single stepping caused a semaphore to
15647 Improved performance through additional parse object caching -
15648 added ACPI_EXTENDED_OP type
15650 -------------------------------------------
15651 Summary of changes for this label: 08_10_00
15653 Parser/Interpreter integration: Eliminated the creation of
15654 complete parse trees for ACPI tables and control methods.
15655 Instead, parse subtrees are created and then deleted as soon as
15656 they are processed (Either entered into the namespace or executed
15657 by the interpreter). This reduces the use of dynamic kernel
15658 memory significantly. (about 10X)
15660 Exception codes broken into classes and renumbered. Be sure to
15661 recompile all code that includes acexcep.h. Hopefully we won't
15662 have to renumber the codes again now that they are split into
15663 classes (environment, programmer, AML code, ACPI table, and
15666 Fixed some additional alignment issues in the Resource Manager
15669 Implemented semaphore tracking in the AcpiExec utility, and fixed
15670 several places where mutexes/semaphores were being unlocked
15671 without a corresponding lock operation. There are no known
15672 semaphore or mutex "leaks" at this time.
15674 Fixed the case where an ASL Return operator is used to return an
15677 -------------------------------------------
15678 Summary of changes for this label: 07_28_00
15680 Fixed a problem with the way addresses were calculated in
15681 AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem
15682 manifested itself when a Field was created with WordAccess or
15683 DwordAccess, but the field unit defined within the Field was less
15685 than a Word or Dword.
15687 Fixed a problem in AmlDumpOperands() module's loop to pull
15688 operands off of the operand stack to display information. The
15689 problem manifested itself as a TLB error on 64-bit systems when
15690 accessing an operand stack with two or more operands.
15692 Fixed a problem with the PCI configuration space handlers where
15693 context was getting confused between accesses. This required a
15694 change to the generic address space handler and address space
15695 setup definitions. Handlers now get both a global handler context
15696 (this is the one passed in by the user when executing
15697 AcpiInstallAddressSpaceHandler() and a specific region context
15698 that is unique to each region (For example, the _ADR, _SEG and
15699 _BBN values associated with a specific region). The generic
15700 function definitions have changed to the following:
15702 typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function,
15703 UINT32 Address, UINT32 BitWidth, UINT32 *Value, void
15704 *HandlerContext, // This used to be void *Context void
15705 *RegionContext); // This is an additional parameter
15707 typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE
15708 RegionHandle, UINT32 Function, void *HandlerContext, void
15709 **RegionContext); // This used to be **ReturnContext
15711 -------------------------------------------
15712 Summary of changes for this label: 07_21_00
15714 Major file consolidation and rename. All files within the
15715 interpreter have been renamed as well as most header files. This
15716 was done to prevent collisions with existing files in the host
15717 OSs -- filenames such as "config.h" and "global.h" seem to be
15718 quite common. The VC project files have been updated. All
15719 makefiles will require modification.
15721 The parser/interpreter integration continues in Phase 5 with the
15722 implementation of a complete 2-pass parse (the AML is parsed
15723 twice) for each table; This avoids the construction of a huge
15724 parse tree and therefore reduces the amount of dynamic memory
15725 required by the subsystem. Greater use of the parse object cache
15726 means that performance is unaffected.
15728 Many comments from the two code reviews have been rolled in.
15730 The 64-bit alignment support is complete.
15732 -------------------------------------------
15733 Summary of changes for this label: 06_30_00
15735 With a nod and a tip of the hat to the technology of yesteryear,
15736 we've added support in the source code for 80 column output
15737 devices. The code is now mostly constrained to 80 columns or
15738 less to support environments and editors that 1) cannot display
15739 or print more than 80 characters on a single line, and 2) cannot
15740 disable line wrapping.
15742 A major restructuring of the namespace data structure has been
15743 completed. The result is 1) cleaner and more
15744 understandable/maintainable code, and 2) a significant reduction
15745 in the dynamic memory requirement for each named ACPI object
15748 -------------------------------------------
15749 Summary of changes for this label: 06_23_00
15751 Linux support has been added. In order to obtain approval to get
15752 the ACPI CA subsystem into the Linux kernel, we've had to make
15753 quite a few changes to the base subsystem that will affect all
15754 users (all the changes are generic and OS- independent). The
15755 effects of these global changes have been somewhat far reaching.
15756 Files have been merged and/or renamed and interfaces have been
15757 renamed. The major changes are described below.
15759 Osd* interfaces renamed to AcpiOs* to eliminate namespace
15760 pollution/confusion within our target kernels. All OSD
15761 interfaces must be modified to match the new naming convention.
15763 Files merged across the subsystem. A number of the smaller source
15764 and header files have been merged to reduce the file count and
15765 increase the density of the existing files. There are too many
15766 to list here. In general, makefiles that call out individual
15767 files will require rebuilding.
15769 Interpreter files renamed. All interpreter files now have the
15770 prefix am* instead of ie* and is*.
15772 Header files renamed: The acapi.h file is now acpixf.h. The
15773 acpiosd.h file is now acpiosxf.h. We are removing references to
15774 the acronym "API" since it is somewhat windowsy. The new name is
15775 "external interface" or xface or xf in the filenames.j
15778 All manifest constants have been forced to upper case (some were
15779 mixed case.) Also, the string "ACPI_" has been prepended to many
15780 (not all) of the constants, typedefs, and structs.
15782 The globals "DebugLevel" and "DebugLayer" have been renamed
15783 "AcpiDbgLevel" and "AcpiDbgLayer" respectively.
15785 All other globals within the subsystem are now prefixed with
15786 "AcpiGbl_" Internal procedures within the subsystem are now
15787 prefixed with "Acpi" (with only a few exceptions). The original
15788 two-letter abbreviation for the subcomponent remains after "Acpi"
15789 - for example, CmCallocate became AcpiCmCallocate.
15791 Added a source code translation/conversion utility. Used to
15792 generate the Linux source code, it can be modified to generate
15793 other types of source as well. Can also be used to cleanup
15794 existing source by removing extraneous spaces and blank lines.
15795 Found in tools/acpisrc/*
15797 OsdUnMapMemory was renamed to OsdUnmapMemory and then
15798 AcpiOsUnmapMemory. (UnMap became Unmap).
15800 A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore.
15801 When set to one, this indicates that the caller wants to use the
15803 semaphore as a mutex, not a counting semaphore. ACPI CA uses
15804 both types. However, implementers of this call may want to use
15805 different OS primitives depending on the type of semaphore
15806 requested. For example, some operating systems provide separate
15808 "mutex" and "semaphore" interfaces - where the mutex interface is
15809 much faster because it doesn't have all the overhead of a full
15810 semaphore implementation.
15812 Fixed a deadlock problem where a method that accesses the PCI
15813 address space can block forever if it is the first access to the
15816 -------------------------------------------
15817 Summary of changes for this label: 06_02_00
15819 Support for environments that cannot handle unaligned data
15820 accesses (e.g. firmware and OS environments devoid of alignment
15821 handler technology namely SAL/EFI and the IA-64 Linux kernel) has
15822 been added (via configurable macros) in these three areas: -
15823 Transfer of data from the raw AML byte stream is done via byte
15824 moves instead of word/dword/qword moves. - External objects are
15825 aligned within the user buffer, including package elements (sub-
15826 objects). - Conversion of name strings to UINT32 Acpi Names is now
15829 The Store operator was modified to mimic Microsoft's
15830 implementation when storing to a Buffer Field.
15832 Added a check of the BM_STS bit before entering C3.
15834 The methods subdirectory has been obsoleted and removed. A new
15835 file, cmeval.c subsumes the functionality.
15837 A 16-bit (DOS) version of AcpiExec has been developed. The
15838 makefile is under the acpiexec directory.