1 ----------------------------------------
2 19 June 2015. Summary of changes for version 20150619:
4 Two regressions in version 20150616 have been addressed:
6 Fixes some problems/issues with the C library macro removal (ACPI_STRLEN,
7 etc.) This update changes ACPICA to only use the standard headers for
8 functions, or the prototypes for the local versions of the C library
9 functions. Across the source code, this required some additional casts
10 for some Clib invocations for portability. Moved all local prototypes to
13 Fixes several problems with recent changes to the handling of the FACS
14 table that could cause some systems not to boot.
17 ----------------------------------------
18 16 June 2015. Summary of changes for version 20150616:
21 1) ACPICA kernel-resident subsystem:
23 Across the entire ACPICA source code base, the various macros for the C
24 library functions (such as ACPI_STRLEN, etc.) have been removed and
25 replaced by the standard C library names (strlen, etc.) The original
26 purpose for these macros is no longer applicable. This simplification
27 reduces the number of macros used in the ACPICA source code
28 significantly, improving readability and maintainability.
30 Implemented support for a new ACPI table, the OSDT. This table, the
31 "override" SDT, can be loaded directly by the host OS at boot time. It
32 enables the replacement of existing namespace objects that were installed
33 via the DSDT and/or SSDTs. The primary purpose for this is to replace
34 buggy or incorrect ASL/AML code obtained via the BIOS. The OSDT is slated
35 for inclusion in a future version of the ACPI Specification. Lv Zheng/Bob
38 Added support for systems with (improperly) two FACS tables -- a "32-bit"
39 table (via FADT 32-bit legacy field) and a "64-bit" table (via the 64-bit
40 X field). This change will support both automatically. There continues to
41 be systems found with this issue. This support requires a change to the
42 AcpiSetFirmwareWakingVector interface. Also, a public global variable has
43 been added to allow the host to select which FACS is desired
44 (AcpiGbl_Use32BitFacsAddresses). See the ACPICA reference for more
47 Added a new feature to allow for systems that do not contain an FACS.
48 Although this is already supported on hardware-reduced platforms, the
49 feature has been extended for all platforms. The reasoning is that we do
50 not want to abort the entire ACPICA initialization just because the
51 system is seriously buggy and has no FACS.
53 Fixed a problem where the GUID strings for NFIT tables (in acuuid.h) were
54 not correctly transcribed from the ACPI specification in ACPICA version
57 Implemented support for the _CLS object in the AcpiGetObjectInfo external
60 Updated the definitions of the TCPA and TPM2 ACPI tables to the more
61 recent TCG ACPI Specification, December 14, 2014. Table disassembler and
62 compiler also updated. Note: The TCPA "server" table is not supported by
63 the disassembler/table-compiler at this time.
65 ACPI 6.0: Added definitions for the new GIC version field in the MADT.
67 Example Code and Data Size: These are the sizes for the OS-independent
68 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
69 debug version of the code includes the debug output trace mechanism and
70 has a much larger code and data size.
73 Non-Debug Version: 100.6K Code, 27.6K Data, 128.2K Total
74 Debug Version: 196.2K Code, 81.0K Data, 277.2K Total
76 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total
77 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total
80 2) iASL Compiler/Disassembler and Tools:
82 Disassembler: Fixed a problem with the new symbolic operator disassembler
83 where incorrect ASL code could be emitted in some cases for the "non-
84 commutative" operators -- Subtract, Divide, Modulo, ShiftLeft, and
85 ShiftRight. The actual problem cases seem to be rather unusual in common
86 ASL code, however. David Box.
88 Modified the linux version of acpidump to obtain ACPI tables from not
89 just /dev/mem (which may not exist) and /sys/firmware/acpi/tables. Lv
92 iASL: Fixed a problem where the user preprocessor output file (.i)
93 contained extra data that was not expected. The compiler was using this
94 file as a temporary file and passed through #line directives in order to
95 keep compiler error messages in sync with the input file and line number
96 across multiple include files. The (.i) is no longer a temporary file as
97 the compiler uses a new, different file for the original purpose.
99 iASL: Fixed a problem where comments within the original ASL source code
100 file were not passed through to the preprocessor output file, nor any
103 iASL: Fixed some issues for the handling of the "#include" preprocessor
104 directive and the similar (but not the same) "Include" ASL operator.
106 iASL: Add support for the new OSDT in both the disassembler and compiler.
108 iASL: Fixed a problem with the constant folding support where a Buffer
109 object could be incorrectly generated (incorrectly formed) during a
110 conversion to a Store() operator.
112 AcpiHelp: Updated for new NFIT GUIDs, "External" AML opcode, and new
113 description text for the _REV predefined name. _REV now permanently
114 returns 2, as per the ACPI 6.0 specification.
116 Debugger: Enhanced the output of the Debug ASL object for references
117 produced by the Index operator. For Buffers and strings, only output the
118 actual byte pointed to by the index. For packages, only print the single
119 package element decoded by the index. Previously, the entire
120 buffer/string/package was emitted.
122 iASL/Table-compiler: Fixed a regression where the "generic" data types
123 were no longer recognized, causing errors.
126 ----------------------------------------
127 15 May 2015. Summary of changes for version 20150515:
129 This release implements most of ACPI 6.0 as described below.
131 1) ACPICA kernel-resident subsystem:
133 Implemented runtime argument checking and return value checking for all
134 new ACPI 6.0 predefined names. This includes: _BTH, _CR3, _DSD, _LPI,
135 _MTL, _PRR, _RDI, _RST, _TFP, _TSN.
137 Example Code and Data Size: These are the sizes for the OS-independent
138 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
139 debug version of the code includes the debug output trace mechanism and
140 has a much larger code and data size.
143 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total
144 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total
146 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total
147 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total
150 2) iASL Compiler/Disassembler and Tools:
152 iASL compiler: Added compile-time support for all new ACPI 6.0 predefined
153 names (argument count validation and return value typechecking.)
155 iASL disassembler and table compiler: implemented support for all new
156 ACPI 6.0 tables. This includes: DRTM, IORT, LPIT, NFIT, STAO, WPBT, XENV.
158 iASL disassembler and table compiler: Added ACPI 6.0 changes to existing
161 iASL preprocessor: Added a new directive to enable inclusion of binary
162 blobs into ASL code. The new directive is #includebuffer. It takes a
163 binary file as input and emits a named ascii buffer object into the ASL
166 AcpiHelp: Added support for all new ACPI 6.0 predefined names.
168 AcpiHelp: Added a new option, -d, to display all iASL preprocessor
171 AcpiHelp: Added a new option, -t, to display all known/supported ACPI
174 ----------------------------------------
175 10 April 2015. Summary of changes for version 20150410:
177 Reverted a change introduced in version 20150408 that caused
178 a regression in the disassembler where incorrect operator
179 symbols could be emitted.
181 ----------------------------------------
182 08 April 2015. Summary of changes for version 20150408:
185 1) ACPICA kernel-resident subsystem:
187 Permanently set the return value for the _REV predefined name. It now
188 returns 2 (was 5). This matches other ACPI implementations. _REV will be
189 deprecated in the future, and is now defined to be 1 for ACPI 1.0, and 2
190 for ACPI 2.0 and later. It should never be used to differentiate or
191 identify operating systems.
193 Added the "Windows 2015" string to the _OSI support. ACPICA will now
194 return TRUE to a query with this string.
196 Fixed several issues with the local version of the printf function.
198 Added the C99 compiler option (-std=c99) to the Unix makefiles.
201 Non-Debug Version: 99.9K Code, 27.4K Data, 127.3K Total
202 Debug Version: 195.2K Code, 80.7K Data, 275.9K Total
204 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
205 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
208 2) iASL Compiler/Disassembler and Tools:
210 iASL: Implemented an enhancement to the constant folding feature to
211 transform the parse tree to a simple Store operation whenever possible:
212 Add (2, 3, X) ==> is converted to: Store (5, X)
213 X = 2 + 3 ==> is converted to: Store (5, X)
215 Updated support for the SLIC table (Software Licensing Description Table)
216 in both the Data Table compiler and the disassembler. The SLIC table
217 support now conforms to "Microsoft Software Licensing Tables (SLIC and
218 MSDM). November 29, 2011. Copyright 2011 Microsoft". Note: Any SLIC data
219 following the ACPI header is now defined to be "Proprietary Data", and as
220 such, can only be entered or displayed as a hex data block.
222 Implemented full support for the MSDM table as described in the document
223 above. Note: The format of MSDM is similar to SLIC. Any MSDM data
224 following the ACPI header is defined to be "Proprietary Data", and can
225 only be entered or displayed as a hex data block.
227 Implemented the -Pn option for the iASL Table Compiler (was only
228 implemented for the ASL compiler). This option disables the iASL
231 Disassembler: For disassembly of Data Tables, added a comment field
232 around the Ascii equivalent data that is emitted as part of the "Raw
233 Table Data" block. This prevents the iASL Preprocessor from possible
234 confusion if/when the table is compiled.
236 Disassembler: Added an option (-df) to force the disassembler to assume
237 that the table being disassembled contains valid AML. This feature is
238 useful for disassembling AML files that contain ACPI signatures other
239 than DSDT or SSDT (such as OEMx or other signatures).
241 Changes for the EFI version of the tools:
242 1) Fixed a build error/issue
243 2) Fixed a cast warning
245 iASL: Fixed a path issue with the __FILE__ operator by making the
246 directory prefix optional within the internal SplitInputFilename
249 Debugger: Removed some unused global variables.
251 Tests: Updated the makefile for proper generation of the AAPITS suite.
253 ----------------------------------------
254 04 February 2015. Summary of changes for version 20150204:
256 ACPICA kernel-resident subsystem:
258 Updated all ACPICA copyrights and signons to 2014. Added the 2014
259 copyright to all module headers and signons, including the standard Linux
260 header. This affects virtually every file in the ACPICA core subsystem,
261 iASL compiler, all ACPICA utilities, and the test suites.
263 Events: Introduce ACPI_GPE_DISPATCH_RAW_HANDLER to fix GPE storm issues.
264 A raw gpe handling mechanism was created to allow better handling of GPE
265 storms that aren't easily managed by the normal handler. The raw handler
266 allows disabling/renabling of the the GPE so that interrupt storms can be
267 avoided in cases where events cannot be timely serviced. In this
268 scenario, handlers should use the AcpiSetGpe() API to disable/enable the
269 GPE. This API will leave the reference counts undisturbed, thereby
270 preventing unintentional clearing of the GPE when the intent in only to
271 temporarily disable it. Raw handlers allow enabling and disabling of a
272 GPE by removing GPE register locking. As such, raw handlers much provide
273 their own locks while using GPE API's to protect access to GPE data
277 Events: Always modify GPE registers under the GPE lock.
278 Applies GPE lock around AcpiFinishGpe() to protect access to GPE register
279 values. Reported as bug by joe.liu@apple.com.
281 Unix makefiles: Separate option to disable optimizations and
282 _FORTIFY_SOURCE. This change removes the _FORTIFY_SOURCE flag from the
283 NOOPT disable option and creates a separate flag (NOFORTIFY) for this
284 purpose. Some toolchains may define _FORTIFY_SOURCE which leads redefined
285 errors when building ACPICA. This allows disabling the option without
286 also having to disable optimazations.
290 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
291 Debug Version: 199.2K Code, 82.4K Data, 281.6K Total
293 ----------------------------------------
294 07 November 2014. Summary of changes for version 20141107:
296 This release is available at https://acpica.org/downloads
298 This release introduces and implements language extensions to ASL that
299 provide support for symbolic ("C-style") operators and expressions. These
300 language extensions are known collectively as ASL+.
303 1) iASL Compiler/Disassembler and Tools:
305 Disassembler: Fixed a problem with disassembly of the UartSerialBus
306 macro. Changed "StopBitsNone" to the correct "StopBitsZero". David E.
309 Disassembler: Fixed the Unicode macro support to add escape sequences.
310 All non-printable ASCII values are emitted as escape sequences, as well
311 as the standard escapes for quote and backslash. Ensures that the
312 disassembled macro can be correctly recompiled.
314 iASL: Added Printf/Fprintf macros for formatted output. These macros are
315 translated to existing AML Concatenate and Store operations. Printf
316 writes to the ASL Debug object. Fprintf allows the specification of an
317 ASL name as the target. Only a single format specifier is required, %o,
318 since the AML interpreter dynamically converts objects to the required
321 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate
322 (Concatenate (Concatenate (Concatenate ("", Arg0),
323 ": Unexpected value for "), Arg1), ", "), Arg2),
324 " at line "), Arg3), Debug)
326 (new) Printf ("%o: Unexpected value for %o, %o at line %o",
327 Arg0, Arg1, Arg2, Arg3)
329 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate
330 ("", Arg1), ": "), Arg0), " Successful"), STR1)
332 (new) Fprintf (STR1, "%o: %o Successful", Arg1, Arg0)
334 iASL: Added debug options (-bp, -bt) to dynamically prune levels of the
335 ASL parse tree before the AML code is generated. This allows blocks of
336 ASL code to be removed in order to help locate and identify problem
337 devices and/or code. David E. Box.
339 AcpiExec: Added support (-fi) for an optional namespace object
340 initialization file. This file specifies initial values for namespace
341 objects as necessary for debugging and testing different ASL code paths
342 that may be taken as a result of BIOS options.
345 2) Overview of symbolic operator support for ASL (ASL+)
346 -------------------------------------------------------
348 As an extension to the ASL language, iASL implements support for symbolic
349 (C-style) operators for math and logical expressions. This can greatly
350 simplify ASL code as well as improve both readability and
351 maintainability. These language extensions can exist concurrently with
352 all legacy ASL code and expressions.
354 The symbolic extensions are 100% compatible with existing AML
355 interpreters, since no new AML opcodes are created. To implement the
356 extensions, the iASL compiler transforms the symbolic expressions into
357 the legacy ASL/AML equivalents at compile time.
359 Full symbolic expressions are supported, along with the standard C
360 precedence and associativity rules.
362 Full disassembler support for the symbolic expressions is provided, and
363 creates an automatic migration path for existing ASL code to ASL+ code
364 via the disassembly process. By default, the disassembler now emits ASL+
365 code with symbolic expressions. An option (-dl) is provided to force the
366 disassembler to emit legacy ASL code if desired.
368 Below is the complete list of the currently supported symbolic operators
369 with examples. See the iASL User Guide for additional information.
372 ASL+ Syntax Legacy ASL Equivalent
373 ----------- ---------------------
377 Z = X + Y Add (X, Y, Z)
378 Z = X - Y Subtract (X, Y, Z)
379 Z = X * Y Multiply (X, Y, Z)
380 Z = X / Y Divide (X, Y, , Z)
381 Z = X % Y Mod (X, Y, Z)
382 Z = X << Y ShiftLeft (X, Y, Z)
383 Z = X >> Y ShiftRight (X, Y, Z)
384 Z = X & Y And (X, Y, Z)
385 Z = X | Y Or (X, Y, Z)
386 Z = X ^ Y Xor (X, Y, Z)
393 (X == Y) LEqual (X, Y)
394 (X != Y) LNotEqual (X, Y)
396 (X > Y) LGreater (X, Y)
397 (X <= Y) LLessEqual (X, Y)
398 (X >= Y) LGreaterEqual (X, Y)
403 // Assignment and compound assignment operations
407 X -= Y Subtract (X, Y, X)
408 X *= Y Multiply (X, Y, X)
409 X /= Y Divide (X, Y, , X)
411 X <<= Y ShiftLeft (X, Y, X)
412 X >>= Y ShiftRight (X, Y, X)
422 If (LOr (LOr (LEqual (And (R510, 0x03FB), 0x02E0), LEqual (
423 And (R520, 0x03FB), 0x02E0)), LOr (LEqual (And (R530,
425 0x02E0), LEqual (And (R540, 0x03FB), 0x02E0))))
427 And (MEMB, 0xFFFFFFF0, SRMB)
430 And (PDBM, 0xFFFFFFFFFFFFFFF9, PDBM)
432 Or (PDBM, 0x02, PDBM)
436 If (((R510 & 0x03FB) == 0x02E0) ||
437 ((R520 & 0x03FB) == 0x02E0) ||
438 ((R530 & 0x03FB) == 0x02E0) ||
439 ((R540 & 0x03FB) == 0x02E0))
441 SRMB = (MEMB & 0xFFFFFFF0)
444 PDBM &= 0xFFFFFFFFFFFFFFF9
450 Store (0x1234, Local1)
451 Multiply (Add (Add (Local1, TEST), 0x20), Local2, Local3)
452 Multiply (Local2, Add (Add (Local1, TEST), 0x20), Local3)
453 Add (Local1, Add (TEST, Multiply (0x20, Local2)), Local3)
454 Store (Index (PKG1, 0x03), Local6)
455 Store (Add (Local3, Local2), Debug)
456 Add (Local1, 0x0F, Local2)
457 Add (Local1, Multiply (Local2, Local3), Local2)
458 Multiply (Add (Add (Local1, TEST), 0x20), ToBCD (Local1), Local3)
462 Local3 = (((Local1 + TEST) + 0x20) * Local2)
463 Local3 = (Local2 * ((Local1 + TEST) + 0x20))
464 Local3 = (Local1 + (TEST + (0x20 * Local2)))
465 Local6 = Index (PKG1, 0x03)
466 Debug = (Local3 + Local2)
467 Local2 = (Local1 + 0x0F)
468 Local2 = (Local1 + (Local2 * Local3))
469 Local3 = (((Local1 + TEST) + 0x20) * ToBCD (Local1))
472 ----------------------------------------
473 26 September 2014. Summary of changes for version 20140926:
475 1) ACPICA kernel-resident subsystem:
477 Updated the GPIO operation region handler interface (GeneralPurposeIo).
478 In order to support GPIO Connection objects with multiple pins, along
479 with the related Field objects, the following changes to the interface
480 have been made: The Address is now defined to be the offset in bits of
481 the field unit from the previous invocation of a Connection. It can be
482 viewed as a "Pin Number Index" into the connection resource descriptor.
483 The BitWidth is the exact bit width of the field. It is usually one bit,
484 but not always. See the ACPICA reference guide (section 8.8.6.2.1) for
485 additional information and examples.
487 GPE support: During ACPICA/GPE initialization, ensure that all GPEs with
488 corresponding _Lxx/_Exx methods are disabled (they may have been enabled
489 by the firmware), so that they cannot fire until they are enabled via
490 AcpiUpdateAllGpes. Rafael J. Wysocki.
492 Added a new return flag for the Event/GPE status interfaces --
493 AcpiGetEventStatus and AcpiGetGpeStatus. The new
494 ACPI_EVENT_FLAGS_HAS_HANDLER flag is used to indicate that the event or
495 GPE currently has a handler associated with it, and can thus actually
496 affect the system. Lv Zheng.
498 Example Code and Data Size: These are the sizes for the OS-independent
499 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
500 debug version of the code includes the debug output trace mechanism and
501 has a much larger code and data size.
504 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total
505 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total
507 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
508 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
510 2) iASL Compiler/Disassembler and Tools:
512 iASL: Fixed a memory allocation/free regression introduced in 20140828
513 that could cause the compiler to crash. This was introduced inadvertently
514 during the effort to eliminate compiler memory leaks. ACPICA BZ 1111,
517 iASL: Removed two error messages that have been found to create false
518 positives, until they can be fixed and fully validated (ACPICA BZ 1112):
519 1) Illegal forward reference within a method
520 2) Illegal reference across two methods
522 iASL: Implemented a new option (-lm) to create a hardware mapping file
523 that summarizes all GPIO, I2C, SPI, and UART connections. This option
524 works for both the compiler and disassembler. See the iASL compiler user
525 guide for additional information and examples (section 6.4.6).
527 AcpiDump: Added support for the version 1 (ACPI 1.0) RSDP in addition to
528 version 2. This corrects the AE_BAD_HEADER exception seen on systems with
529 a version 1 RSDP. Lv Zheng ACPICA BZ 1097.
531 AcpiExec: For Unix versions, don't attempt to put STDIN into raw mode
532 unless STDIN is actually a terminal. Assists with batch-mode processing.
535 Disassembler/AcpiHelp: Added another large group of recognized _HID
539 ----------------------------------------
540 28 August 2014. Summary of changes for version 20140828:
542 1) ACPICA kernel-resident subsystem:
544 Fixed a problem related to the internal use of the Timer() operator where
545 a 64-bit divide could cause an attempted link to a double-precision math
546 library. This divide is not actually necessary, so the code was
547 restructured to eliminate it. Lv Zheng.
549 ACPI 5.1: Added support for the runtime validation of the _DSD package
550 (similar to the iASL support).
552 ACPI 5.1/Headers: Added support for the GICC affinity subtable to the
553 SRAT table. Hanjun Guo <hanjun.guo@linaro.org>.
555 Example Code and Data Size: These are the sizes for the OS-independent
556 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
557 debug version of the code includes the debug output trace mechanism and
558 has a much larger code and data size.
561 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
562 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
564 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total1
565 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total
567 2) iASL Compiler/Disassembler and Tools:
569 AcpiExec: Fixed a problem on unix systems where the original terminal
570 state was not always properly restored upon exit. Seen when using the -v
571 option. ACPICA BZ 1104.
573 iASL: Fixed a problem with the validation of the ranges/length within the
574 Memory24 resource descriptor. There was a boundary condition when the
575 range was equal to the (length -1) caused by the fact that these values
576 are defined in 256-byte blocks, not bytes. ACPICA BZ 1098
578 Disassembler: Fixed a problem with the GpioInt descriptor interrupt
580 flags. The flags are actually 2 bits, not 1, and the "ActiveBoth" keyword
582 now supported properly.
584 ACPI 5.1: Added the GICC affinity subtable to the SRAT table. Supported
585 in the disassembler, data table compiler, and table template generator.
587 iASL: Added a requirement for Device() objects that one of either a _HID
588 or _ADR must exist within the scope of a Device, as per the ACPI
589 specification. Remove a similar requirement that was incorrectly in place
592 iASL: Added error detection for illegal named references within control
593 methods that would cause runtime failures. Now trapped as errors are: 1)
594 References to objects within a non-parent control method. 2) Forward
595 references (within a method) -- for control methods, AML interpreters use
596 a one-pass parse of control methods. ACPICA BZ 1008.
598 iASL: Added error checking for dependencies related to the _PSx power
599 methods. ACPICA BZ 1029.
600 1) For _PS0, one of these must exist within the same scope: _PS1, _PS2,
602 2) For _PS1, _PS2, and PS3: A _PS0 object must exist within the same
605 iASL and table compiler: Cleanup miscellaneous memory leaks by fully
606 deploying the existing object and string caches and adding new caches for
609 iASL: Split the huge parser source file into multiple subfiles to improve
610 manageability. Generation now requires the M4 macro preprocessor, which
611 is part of the Bison distribution on both unix and windows platforms.
613 AcpiSrc: Fixed and removed all extraneous warnings generated during
614 entire ACPICA source code scan and/or conversion.
617 ----------------------------------------
619 24 July 2014. Summary of changes for version 20140724:
621 The ACPI 5.1 specification has been released and is available at:
622 http://uefi.org/specs/access
625 0) ACPI 5.1 support in ACPICA:
627 ACPI 5.1 is fully supported in ACPICA as of this release.
629 New predefined names. Support includes iASL and runtime ACPICA
631 _CCA (Cache Coherency Attribute).
632 _DSD (Device-Specific Data). David Box.
634 Modifications to existing ACPI tables. Support includes headers, iASL
635 Data Table compiler, disassembler, and the template generator.
636 FADT - New fields and flags. Graeme Gregory.
637 GTDT - One new subtable and new fields. Tomasz Nowicki.
638 MADT - Two new subtables. Tomasz Nowicki.
639 PCCT - One new subtable.
642 New notification type for System Resource Affinity change events.
645 1) ACPICA kernel-resident subsystem:
647 Fixed a regression introduced in 20140627 where a fault can happen during
648 the deletion of Alias AML namespace objects. The problem affected both
649 the core ACPICA and the ACPICA tools including iASL and AcpiExec.
651 Implemented a new GPE public interface, AcpiMarkGpeForWake. Provides a
652 simple mechanism to enable wake GPEs that have no associated handler or
653 control method. Rafael Wysocki.
655 Updated the AcpiEnableGpe interface to disallow the enable if there is no
656 handler or control method associated with the particular GPE. This will
657 help avoid meaningless GPEs and even GPE floods. Rafael Wysocki.
659 Updated GPE handling and dispatch by disabling the GPE before clearing
660 the status bit for edge-triggered GPEs. Lv Zheng.
662 Added Timer() support to the AML Debug object. The current timer value is
663 now displayed with each invocation of (Store to) the debug object to
664 enable simple generation of execution times for AML code (method
665 execution for example.) ACPICA BZ 1093.
667 Example Code and Data Size: These are the sizes for the OS-independent
668 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
669 debug version of the code includes the debug output trace mechanism and
670 has a much larger code and data size.
673 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total
674 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total
676 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total
677 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total
680 2) iASL Compiler/Disassembler and Tools:
682 Fixed an issue with the recently added local printf implementation,
683 concerning width/precision specifiers that could cause incorrect output.
684 Lv Zheng. ACPICA BZ 1094.
686 Disassembler: Added support to detect buffers that contain UUIDs and
687 disassemble them to an invocation of the ToUUID operator. Also emit
688 commented descriptions of known ACPI-related UUIDs.
690 AcpiHelp: Added support to display known ACPI-related UUIDs. New option,
691 -u. Adds three new files.
693 iASL: Update table compiler and disassembler for DMAR table changes that
694 were introduced in September 2013. With assistance by David Woodhouse.
696 ----------------------------------------
697 27 June 2014. Summary of changes for version 20140627:
699 1) ACPICA kernel-resident subsystem:
701 Formatted Output: Implemented local versions of standard formatted output
702 utilities such as printf, etc. Over time, it has been discovered that
703 there are in fact many portability issues with printf, and the addition
704 of this feature will fix/prevent these issues once and for all. Some
705 known issues are summarized below:
707 1) Output of 64-bit values is not portable. For example, UINT64 is %ull
708 for the Linux kernel and is %uI64 for some MSVC versions.
709 2) Invoking printf consistently in a manner that is portable across both
710 32-bit and 64-bit platforms is difficult at best in many situations.
711 3) The output format for pointers varies from system to system (leading
712 zeros especially), and leads to inconsistent output from ACPICA across
714 4) Certain platform-specific printf formats may conflict with ACPICA use.
715 5) If there is no local C library available, ACPICA now has local support
718 -- To address these printf issues in a complete manner, ACPICA now
719 directly implements a small subset of printf format specifiers, only
720 those that it requires. Adds a new file, utilities/utprint.c. Lv Zheng.
722 Implemented support for ACPICA generation within the EFI environment.
723 Initially, the AcpiDump utility is supported in the UEFI shell
724 environment. Lv Zheng.
726 Added a new external interface, AcpiLogError, to improve ACPICA
727 portability. This allows the host to redirect error messages from the
728 ACPICA utilities. Lv Zheng.
730 Added and deployed new OSL file I/O interfaces to improve ACPICA
738 There are C library implementations of these functions in the new file
739 service_layers/oslibcfs.c -- however, the functions can be implemented by
740 the local host in any way necessary. Lv Zheng.
742 Implemented a mechanism to disable/enable ACPI table checksum validation
743 at runtime. This can be useful when loading tables very early during OS
744 initialization when it may not be possible to map the entire table in
745 order to compute the checksum. Lv Zheng.
747 Fixed a buffer allocation issue for the Generic Serial Bus support.
748 Originally, a fixed buffer length was used. This change allows for
749 variable-length buffers based upon the protocol indicated by the field
750 access attributes. Reported by Lan Tianyu. Lv Zheng.
752 Fixed a problem where an object detached from a namespace node was not
753 properly terminated/cleared and could cause a circular list problem if
754 reattached. ACPICA BZ 1063. David Box.
756 Fixed a possible recursive lock acquisition in hwregs.c. Rakib Mullick.
758 Fixed a possible memory leak in an error return path within the function
759 AcpiUtCopyIobjectToIobject. ACPICA BZ 1087. Colin Ian King.
761 Example Code and Data Size: These are the sizes for the OS-independent
762 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
763 debug version of the code includes the debug output trace mechanism and
764 has a much larger code and data size.
767 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total
768 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total
770 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total
771 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total
774 2) iASL Compiler/Disassembler and Tools:
776 Disassembler: Add dump of ASCII equivalent text within a comment at the
777 end of each line of the output for the Buffer() ASL operator.
779 AcpiDump: Miscellaneous changes:
780 Fixed repetitive table dump in -n mode.
781 For older EFI platforms, use the ACPI 1.0 GUID during RSDP search if
782 the ACPI 2.0 GUID fails.
784 iASL: Fixed a problem where the compiler could fault if incorrectly given
785 an acpidump output file as input. ACPICA BZ 1088. David Box.
787 AcpiExec/AcpiNames: Fixed a problem where these utilities could fault if
788 they are invoked without any arguments.
790 Debugger: Fixed a possible memory leak in an error return path. ACPICA BZ
791 1086. Colin Ian King.
793 Disassembler: Cleaned up a block of code that extracts a parent Op
794 object. Added a comment that explains that the parent is guaranteed to be
795 valid in this case. ACPICA BZ 1069.
797 ----------------------------------------
798 24 April 2014. Summary of changes for version 20140424:
800 1) ACPICA kernel-resident subsystem:
802 Implemented support to skip/ignore NULL address entries in the RSDT/XSDT.
803 Some of these tables are known to contain a trailing NULL entry. Lv
806 Removed an extraneous error message for the case where there are a large
807 number of system GPEs (> 124). This was the "32-bit FADT register is too
808 long to convert to GAS struct" message, which is irrelevant for GPEs
809 since the GPEx_BLK_LEN fields of the FADT are always used instead of the
810 (limited capacity) GAS bit length. Also, several changes to ensure proper
811 support for GPE numbers > 255, where some "GPE number" fields were 8-bits
814 Implemented and deployed additional configuration support for the public
815 ACPICA external interfaces. Entire classes of interfaces can now be
816 easily modified or configured out, replaced by stubbed inline functions
817 by default. Lv Zheng.
819 Moved all public ACPICA runtime configuration globals to the public
820 ACPICA external interface file for convenience. Also, removed some
821 obsolete/unused globals. See the file acpixf.h. Lv Zheng.
823 Documentation: Added a new section to the ACPICA reference describing the
824 maximum number of GPEs that can be supported by the FADT-defined GPEs in
825 block zero and one. About 1200 total. See section 4.4.1 of the ACPICA
828 Example Code and Data Size: These are the sizes for the OS-independent
829 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
830 debug version of the code includes the debug output trace mechanism and
831 has a much larger code and data size.
834 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total
835 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total
837 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total
838 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
841 2) iASL Compiler/Disassembler and Tools:
843 iASL and disassembler: Add full support for the LPIT table (Low Power
844 Idle Table). Includes support in the disassembler, data table compiler,
845 and template generator.
848 1) Add option to force the use of the RSDT (over the XSDT).
849 2) Improve validation of the RSDP signature (use 8 chars instead of 4).
851 iASL: Add check for predefined packages that are too large. For
852 predefined names that contain subpackages, check if each subpackage is
853 too large. (Check for too small already exists.)
855 Debugger: Updated the GPE command (which simulates a GPE by executing the
856 GPE code paths in ACPICA). The GPE device is now optional, and defaults
857 to the GPE 0/1 FADT-defined blocks.
859 Unix application OSL: Update line-editing support. Add additional error
860 checking and take care not to reset terminal attributes on exit if they
861 were never set. This should help guarantee that the terminal is always
862 left in the previous state on program exit.
864 ----------------------------------------
865 25 March 2014. Summary of changes for version 20140325:
867 1) ACPICA kernel-resident subsystem:
869 Updated the auto-serialize feature for control methods. This feature
870 automatically serializes all methods that create named objects in order
871 to prevent runtime errors. The update adds support to ignore the
872 currently executing AML SyncLevel when invoking such a method, in order
873 to prevent disruption of any existing SyncLevel priorities that may exist
874 in the AML code. Although the use of SyncLevels is relatively rare, this
875 change fixes a regression where an AE_AML_MUTEX_ORDER exception can
876 appear on some machines starting with the 20140214 release.
878 Added a new external interface to allow the host to install ACPI tables
879 very early, before the namespace is even created. AcpiInstallTable gives
880 the host additional flexibility for ACPI table management. Tables can be
881 installed directly by the host as if they had originally appeared in the
882 XSDT/RSDT. Installed tables can be SSDTs or other ACPI data tables
883 (anything except the DSDT and FACS). Adds a new file, tbdata.c, along
884 with additional internal restructuring and cleanup. See the ACPICA
885 Reference for interface details. Lv Zheng.
887 Added validation of the checksum for all incoming dynamically loaded
888 tables (via external interfaces or via AML Load/LoadTable operators). Lv
891 Updated the use of the AcpiOsWaitEventsComplete interface during Notify
892 and GPE handler removal. Restructured calls to eliminate possible race
893 conditions. Lv Zheng.
895 Added a warning for the use/execution of the ASL/AML Unload (table)
896 operator. This will help detect and identify machines that use this
897 operator if and when it is ever used. This operator has never been seen
898 in the field and the usage model and possible side-effects of the drastic
899 runtime action of a full table removal are unknown.
901 Reverted the use of #pragma push/pop which was introduced in the 20140214
902 release. It appears that push and pop are not implemented by enough
903 compilers to make the use of this feature feasible for ACPICA at this
904 time. However, these operators may be deployed in a future ACPICA
907 Added the missing EXPORT_SYMBOL macros for the install and remove SCI
910 Source code generation:
911 1) Disabled the use of the "strchr" macro for the gcc-specific
912 generation. For some versions of gcc, this macro can periodically expose
913 a compiler bug which in turn causes compile-time error(s).
914 2) Added support for PPC64 compilation. Colin Ian King.
916 Example Code and Data Size: These are the sizes for the OS-independent
917 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
918 debug version of the code includes the debug output trace mechanism and
919 has a much larger code and data size.
922 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total
923 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
925 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
926 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
929 2) iASL Compiler/Disassembler and Tools:
931 Disassembler: Added several new features to improve the readability of
932 the resulting ASL code. Extra information is emitted within comment
933 fields in the ASL code:
934 1) Known _HID/_CID values are decoded to descriptive text.
935 2) Standard values for the Notify() operator are decoded to descriptive
937 3) Target operands are expanded to full pathnames (in a comment) when
940 Disassembler: Miscellaneous updates for extern() handling:
941 1) Abort compiler if file specified by -fe option does not exist.
942 2) Silence unnecessary warnings about argument count mismatches.
943 3) Update warning messages concerning unresolved method externals.
944 4) Emit "UnknownObj" keyword for externals whose type cannot be
948 1) Added the -a option to display both the ASL syntax and the AML
949 encoding for an input ASL operator. This effectively displays all known
950 information about an ASL operator with one AcpiHelp invocation.
951 2) Added substring match support (similar to a wildcard) for the -i
952 (_HID/PNP IDs) option.
954 iASL/Disassembler: Since this tool does not yet support execution on big-
955 endian machines, added detection of endianness and an error message if
956 execution is attempted on big-endian. Support for big-endian within iASL
957 is a feature that is on the ACPICA to-be-done list.
960 1) Remove option to extract binary files from an acpidump; this function
961 is made obsolete by the AcpiXtract utility.
962 2) General cleanup of open files and allocated buffers.
964 ----------------------------------------
965 14 February 2014. Summary of changes for version 20140214:
967 1) ACPICA kernel-resident subsystem:
969 Implemented a new mechanism to proactively prevent problems with ill-
970 behaved reentrant control methods that create named ACPI objects. This
971 behavior is illegal as per the ACPI specification, but is nonetheless
972 frequently seen in the field. Previously, this could lead to an
973 AE_ALREADY_EXISTS exception if the method was actually entered by more
974 than one thread. This new mechanism detects such methods at table load
975 time and marks them "serialized" to prevent reentrancy. A new global
976 option, AcpiGbl_AutoSerializeMethods, has been added to disable this
977 feature if desired. This mechanism and global option obsoletes and
978 supersedes the previous AcpiGbl_SerializeAllMethods option.
980 Added the "Windows 2013" string to the _OSI support. ACPICA will now
981 respond TRUE to _OSI queries with this string. It is the stated policy of
982 ACPICA to add new strings to the _OSI support as soon as possible after
983 they are defined. See the full ACPICA _OSI policy which has been added to
984 the utilities/utosi.c file.
986 Hardened/updated the _PRT return value auto-repair code:
987 1) Do not abort the repair on a single subpackage failure, continue to
988 check all subpackages.
989 2) Add check for the minimum subpackage length (4).
990 3) Properly handle extraneous NULL package elements.
992 Added support to avoid the possibility of infinite loops when traversing
993 object linked lists. Never allow an infinite loop, even in the face of
994 corrupted object lists.
996 ACPICA headers: Deployed the use of #pragma pack(push) and #pragma
997 pack(pop) directives to ensure that the ACPICA headers are independent of
998 compiler settings or other host headers.
1000 Example Code and Data Size: These are the sizes for the OS-independent
1001 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1002 debug version of the code includes the debug output trace mechanism and
1003 has a much larger code and data size.
1006 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
1007 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
1009 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
1010 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
1013 2) iASL Compiler/Disassembler and Tools:
1015 iASL/Table-compiler: Fixed a problem with support for the SPMI table. The
1016 first reserved field was incorrectly forced to have a value of zero. This
1017 change correctly forces the field to have a value of one. ACPICA BZ 1081.
1019 Debugger: Added missing support for the "Extra" and "Data" subobjects
1020 when displaying object data.
1022 Debugger: Added support to display entire object linked lists when
1023 displaying object data.
1025 iASL: Removed the obsolete -g option to obtain ACPI tables from the
1026 Windows registry. This feature has been superseded by the acpidump
1029 ----------------------------------------
1030 14 January 2014. Summary of changes for version 20140114:
1032 1) ACPICA kernel-resident subsystem:
1034 Updated all ACPICA copyrights and signons to 2014. Added the 2014
1035 copyright to all module headers and signons, including the standard Linux
1036 header. This affects virtually every file in the ACPICA core subsystem,
1037 iASL compiler, all ACPICA utilities, and the test suites.
1039 Improved parameter validation for AcpiInstallGpeBlock. Added the
1041 1) The incoming device handle refers to type ACPI_TYPE_DEVICE.
1042 2) There is not already a GPE block attached to the device.
1043 Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a
1046 Correctly support "references" in the ACPI_OBJECT. This change fixes the
1047 support to allow references (namespace nodes) to be passed as arguments
1048 to control methods via the evaluate object interface. This is probably
1049 most useful for testing purposes, however.
1051 Improved support for 32/64 bit physical addresses in printf()-like
1052 output. This change improves the support for physical addresses in printf
1053 debug statements and other output on both 32-bit and 64-bit hosts. It
1054 consistently outputs the appropriate number of bytes for each host. The
1055 %p specifier is unsatisfactory since it does not emit uniform output on
1056 all hosts/clib implementations (on some, leading zeros are not supported,
1057 leading to difficult-to-read output).
1059 Example Code and Data Size: These are the sizes for the OS-independent
1060 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1061 debug version of the code includes the debug output trace mechanism and
1062 has a much larger code and data size.
1065 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
1066 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
1068 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
1069 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
1072 2) iASL Compiler/Disassembler and Tools:
1074 iASL: Fix a possible fault when using the Connection() operator. Fixes a
1075 problem if the parent Field definition for the Connection operator refers
1076 to an operation region that does not exist. ACPICA BZ 1064.
1078 AcpiExec: Load of local test tables is now optional. The utility has the
1079 capability to load some various tables to test features of ACPICA.
1080 However, there are enough of them that the output of the utility became
1081 confusing. With this change, only the required local tables are displayed
1082 (RSDP, XSDT, etc.) along with the actual tables loaded via the command
1083 line specification. This makes the default output simler and easier to
1084 understand. The -el command line option restores the original behavior
1085 for testing purposes.
1087 AcpiExec: Added support for overlapping operation regions. This change
1088 expands the simulation of operation regions by supporting regions that
1089 overlap within the given address space. Supports SystemMemory and
1090 SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031.
1092 AcpiExec: Added region handler support for PCI_Config and EC spaces. This
1093 allows AcpiExec to simulate these address spaces, similar to the current
1094 support for SystemMemory and SystemIO.
1096 Debugger: Added new command to read/write/compare all namespace objects.
1097 The command "test objects" will exercise the entire namespace by writing
1098 new values to each data object, and ensuring that the write was
1099 successful. The original value is then restored and verified.
1101 Debugger: Added the "test predefined" command. This change makes this
1102 test public and puts it under the new "test" command. The test executes
1103 each and every predefined name within the current namespace.
1105 ----------------------------------------
1106 18 December 2013. Summary of changes for version 20131218:
1108 Global note: The ACPI 5.0A specification was released this month. There
1109 are no changes needed for ACPICA since this release of ACPI is an
1110 errata/clarification release. The specification is available at
1114 1) ACPICA kernel-resident subsystem:
1116 Added validation of the XSDT root table if it is present. Some older
1117 platforms contain an XSDT that is ill-formed or otherwise invalid (such
1118 as containing some or all entries that are NULL pointers). This change
1119 adds a new function to validate the XSDT before actually using it. If the
1120 XSDT is found to be invalid, ACPICA will now automatically fall back to
1121 using the RSDT instead. Original implementation by Zhao Yakui. Ported to
1122 ACPICA and enhanced by Lv Zheng and Bob Moore.
1124 Added a runtime option to ignore the XSDT and force the use of the RSDT.
1125 This change adds a runtime option that will force ACPICA to use the RSDT
1126 instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec
1127 requires that an XSDT be used instead of the RSDT, the XSDT has been
1128 found to be corrupt or ill-formed on some machines. Lv Zheng.
1130 Added a runtime option to favor 32-bit FADT register addresses over the
1131 64-bit addresses. This change adds an option to favor 32-bit FADT
1132 addresses when there is a conflict between the 32-bit and 64-bit versions
1133 of the same register. The default behavior is to use the 64-bit version
1134 in accordance with the ACPI specification. This can now be overridden via
1135 the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng.
1137 During the change above, the internal "Convert FADT" and "Verify FADT"
1138 functions have been merged to simplify the code, making it easier to
1139 understand and maintain. ACPICA BZ 933.
1141 Improve exception reporting and handling for GPE block installation.
1142 Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the
1143 status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019.
1145 Added helper macros to extract bus/segment numbers from the HEST table.
1146 This change adds two macros to extract the encoded bus and segment
1147 numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT.
1148 Betty Dall <betty.dall@hp.com>
1150 Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used
1151 by ACPICA. It is not a public macro, so it should have no effect on
1152 existing OSV code. Lv Zheng.
1154 Example Code and Data Size: These are the sizes for the OS-independent
1155 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1156 debug version of the code includes the debug output trace mechanism and
1157 has a much larger code and data size.
1160 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
1161 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
1163 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
1164 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
1167 2) iASL Compiler/Disassembler and Tools:
1169 Disassembler: Improved pathname support for emitted External()
1170 statements. This change adds full pathname support for external names
1171 that have been resolved internally by the inclusion of additional ACPI
1172 tables (via the iASL -e option). Without this change, the disassembler
1173 can emit multiple externals for the same object, or it become confused
1174 when the Scope() operator is used on an external object. Overall, greatly
1175 improves the ability to actually recompile the emitted ASL code when
1176 objects a referenced across multiple ACPI tables. Reported by Michael
1177 Tsirkin (mst@redhat.com).
1179 Tests/ASLTS: Updated functional control suite to execute with no errors.
1180 David Box. Fixed several errors related to the testing of the interpreter
1181 slack mode. Lv Zheng.
1183 iASL: Added support to detect names that are declared within a control
1184 method, but are unused (these are temporary names that are only valid
1185 during the time the method is executing). A remark is issued for these
1186 cases. ACPICA BZ 1022.
1188 iASL: Added full support for the DBG2 table. Adds full disassembler,
1189 table compiler, and template generator support for the DBG2 table (Debug
1192 iASL: Added full support for the PCCT table, update the table definition.
1193 Updates the PCCT table definition in the actbl3.h header and adds table
1194 compiler and template generator support.
1196 iASL: Added an option to emit only error messages (no warnings/remarks).
1197 The -ve option will enable only error messages, warnings and remarks are
1198 suppressed. This can simplify debugging when only the errors are
1199 important, such as when an ACPI table is disassembled and there are many
1200 warnings and remarks -- but only the actual errors are of real interest.
1202 Example ACPICA code (source/tools/examples): Updated the example code so
1203 that it builds to an actual working program, not just example code. Added
1204 ACPI tables and execution of an example control method in the DSDT. Added
1205 makefile support for Unix generation.
1207 ----------------------------------------
1208 15 November 2013. Summary of changes for version 20131115:
1210 This release is available at https://acpica.org/downloads
1213 1) ACPICA kernel-resident subsystem:
1215 Resource Manager: Fixed loop termination for the "get AML length"
1216 function. The loop previously had an error termination on a NULL resource
1217 pointer, which can never happen since the loop simply increments a valid
1218 resource pointer. This fix changes the loop to terminate with an error on
1219 an invalid end-of-buffer condition. The problem can be seen as an
1220 infinite loop by callers to AcpiSetCurrentResources with an invalid or
1221 corrupted resource descriptor, or a resource descriptor that is missing
1222 an END_TAG descriptor. Reported by Dan Carpenter
1223 <dan.carpenter@oracle.com>. Lv Zheng, Bob Moore.
1225 Table unload and ACPICA termination: Delete all attached data objects
1226 during namespace node deletion. This fix updates namespace node deletion
1227 to delete the entire list of attached objects (attached via
1228 AcpiAttachObject) instead of just one of the attached items. ACPICA BZ
1229 1024. Tomasz Nowicki (tomasz.nowicki@linaro.org).
1231 ACPICA termination: Added support to delete all objects attached to the
1232 root namespace node. This fix deletes any and all objects that have been
1233 attached to the root node via AcpiAttachData. Previously, none of these
1234 objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026.
1236 Debug output: Do not emit the function nesting level for the in-kernel
1237 build. The nesting level is really only useful during a single-thread
1238 execution. Therefore, only enable this output for the AcpiExec utility.
1239 Also, only emit the thread ID when executing under AcpiExec (Context
1240 switches are still always detected and a message is emitted). ACPICA BZ
1243 Example Code and Data Size: These are the sizes for the OS-independent
1244 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1245 debug version of the code includes the debug output trace mechanism and
1246 has a much larger code and data size.
1249 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
1250 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
1252 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
1253 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
1256 2) iASL Compiler/Disassembler and Tools:
1258 AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the
1259 correct portable POSIX header for terminal control functions.
1261 Disassembler: Fixed control method invocation issues related to the use
1262 of the CondRefOf() operator. The problem is seen in the disassembly where
1263 control method invocations may not be disassembled properly if the
1264 control method name has been used previously as an argument to CondRefOf.
1265 The solution is to not attempt to emit an external declaration for the
1266 CondRefOf target (it is not necessary in the first place). This prevents
1267 disassembler object type confusion. ACPICA BZ 988.
1269 Unix Makefiles: Added an option to disable compiler optimizations and the
1270 _FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA
1271 with optimizations (reportedly, gcc 4.4 for example). This change adds a
1272 command line option for make (NOOPT) that disables all compiler
1273 optimizations and the _FORTIFY_SOURCE compiler flag. The default
1274 optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ
1275 1034. Lv Zheng, Bob Moore.
1277 Tests/ASLTS: Added options to specify individual test cases and modes.
1278 This allows testers running aslts.sh to optionally specify individual
1279 test modes and test cases. Also added an option to disable the forced
1280 generation of the ACPICA tools from source if desired. Lv Zheng.
1282 ----------------------------------------
1283 27 September 2013. Summary of changes for version 20130927:
1285 This release is available at https://acpica.org/downloads
1288 1) ACPICA kernel-resident subsystem:
1290 Fixed a problem with store operations to reference objects. This change
1291 fixes a problem where a Store operation to an ArgX object that contained
1293 reference to a field object did not complete the automatic dereference
1295 then write to the actual field object. Instead, the object type of the
1296 field object was inadvertently changed to match the type of the source
1297 operand. The new behavior will actually write to the field object (buffer
1298 field or field unit), thus matching the correct ACPI-defined behavior.
1300 Implemented support to allow the host to redefine individual OSL
1301 prototypes. This change enables the host to redefine OSL prototypes found
1302 in the acpiosxf.h file. This allows the host to implement OSL interfaces
1303 with a macro or inlined function. Further, it allows the host to add any
1304 additional required modifiers such as __iomem, __init, __exit, etc., as
1305 necessary on a per-interface basis. Enables maximum flexibility for the
1306 OSL interfaces. Lv Zheng.
1308 Hardcoded the access width for the FADT-defined reset register. The ACPI
1309 specification requires the reset register width to be 8 bits. ACPICA now
1310 hardcodes the width to 8 and ignores the FADT width value. This provides
1311 compatibility with other ACPI implementations that have allowed BIOS code
1312 with bad register width values to go unnoticed. Matthew Garett, Bob
1316 Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is
1318 in the OSL header (acpiosxf). The change modifies the position of this
1319 macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid
1320 build issues if the OSL defines the implementation of the interface to be
1321 an inline stub function. Lv Zheng.
1323 Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA
1324 initialization interfaces. This change adds a new macro for the main init
1325 and terminate external interfaces in order to support hosts that require
1326 additional or different processing for these functions. Changed from
1327 ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv
1330 Cleaned up the memory allocation macros for configurability. In the
1332 case, the ACPI_ALLOCATE and related macros now resolve directly to their
1333 respective AcpiOs* OSL interfaces. Two options:
1334 1) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by
1335 default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define.
1336 2) For AcpiExec (and for debugging), the macros can optionally be
1338 to the local ACPICA interfaces that track each allocation (local tracking
1339 is used to immediately detect memory leaks).
1342 Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel
1343 to predefine this macro to either TRUE or FALSE during the system build.
1345 Replaced __FUNCTION_ with __func__ in the gcc-specific header.
1347 Example Code and Data Size: These are the sizes for the OS-independent
1348 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1349 debug version of the code includes the debug output trace mechanism and
1350 has a much larger code and data size.
1353 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
1354 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
1356 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
1357 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
1360 2) iASL Compiler/Disassembler and Tools:
1362 iASL: Implemented wildcard support for the -e option. This simplifies use
1363 when there are many SSDTs that must be included to resolve external
1365 declarations. ACPICA BZ 1041. Example:
1366 iasl -e ssdt*.dat -d dsdt.dat
1368 AcpiExec: Add history/line-editing for Unix/Linux systems. This change
1369 adds a portable module that implements full history and limited line
1370 editing for Unix and Linux systems. It does not use readline() due to
1371 portability issues. Instead it uses the POSIX termio interface to put the
1372 terminal in raw input mode so that the various special keys can be
1374 (such as up/down-arrow for history support and left/right-arrow for line
1375 editing). Uses the existing debugger history mechanism. ACPICA BZ 1036.
1377 AcpiXtract: Add support to handle (ignore) "empty" lines containing only
1378 one or more spaces. This provides compatible with early or different
1379 versions of the AcpiDump utility. ACPICA BZ 1044.
1381 AcpiDump: Do not ignore tables that contain only an ACPI table header.
1382 Apparently, some BIOSs create SSDTs that contain an ACPI table header but
1383 no other data. This change adds support to dump these tables. Any tables
1384 shorter than the length of an ACPI table header remain in error (an error
1385 message is emitted). Reported by Yi Li.
1387 Debugger: Echo actual command along with the "unknown command" message.
1389 ----------------------------------------
1390 23 August 2013. Summary of changes for version 20130823:
1392 1) ACPICA kernel-resident subsystem:
1394 Implemented support for host-installed System Control Interrupt (SCI)
1395 handlers. Certain ACPI functionality requires the host to handle raw
1396 SCIs. For example, the "SCI Doorbell" that is defined for memory power
1397 state support requires the host device driver to handle SCIs to examine
1398 if the doorbell has been activated. Multiple SCI handlers can be
1399 installed to allow for future expansion. New external interfaces are
1400 AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for
1401 details. Lv Zheng, Bob Moore. ACPICA BZ 1032.
1403 Operation region support: Never locally free the handler "context"
1404 pointer. This change removes some dangerous code that attempts to free
1405 the handler context pointer in some (rare) circumstances. The owner of
1406 the handler owns this pointer and the ACPICA code should never touch it.
1407 Although not seen to be an issue in any kernel, it did show up as a
1408 problem (fault) under AcpiExec. Also, set the internal storage field for
1409 the context pointer to zero when the region is deactivated, simply for
1410 sanity. David Box. ACPICA BZ 1039.
1412 AcpiRead: On error, do not modify the return value target location. If an
1413 error happens in the middle of a split 32/32 64-bit I/O operation, do not
1414 modify the target of the return value pointer. Makes the code consistent
1415 with the rest of ACPICA. Bjorn Helgaas.
1417 Example Code and Data Size: These are the sizes for the OS-independent
1418 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1419 debug version of the code includes the debug output trace mechanism and
1420 has a much larger code and data size.
1423 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
1424 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
1426 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
1427 Debug Version: 185.4K Code, 77.1K Data, 262.5K Total
1430 2) iASL Compiler/Disassembler and Tools:
1432 AcpiDump: Implemented several new features and fixed some problems:
1433 1) Added support to dump the RSDP, RSDT, and XSDT tables.
1434 2) Added support for multiple table instances (SSDT, UEFI).
1435 3) Added option to dump "customized" (overridden) tables (-c).
1436 4) Fixed a problem where some table filenames were improperly
1438 5) Improved some error messages, removed some unnecessary messages.
1440 iASL: Implemented additional support for disassembly of ACPI tables that
1441 contain invocations of external control methods. The -fe<file> option
1442 allows the import of a file that specifies the external methods along
1443 with the required number of arguments for each -- allowing for the
1444 correct disassembly of the table. This is a workaround for a limitation
1445 of AML code where the disassembler often cannot determine the number of
1446 arguments required for an external control method and generates incorrect
1447 ASL code. See the iASL reference for details. ACPICA BZ 1030.
1449 Debugger: Implemented a new command (paths) that displays the full
1450 pathnames (namepaths) and object types of all objects in the namespace.
1451 This is an alternative to the namespace command.
1453 Debugger: Implemented a new command (sci) that invokes the SCI dispatch
1454 mechanism and any installed handlers.
1456 iASL: Fixed a possible segfault for "too many parent prefixes" condition.
1457 This can occur if there are too many parent prefixes in a namepath (for
1458 example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035.
1460 Application OSLs: Set the return value for the PCI read functions. These
1461 functions simply return AE_OK, but should set the return value to zero
1462 also. This change implements this. ACPICA BZ 1038.
1464 Debugger: Prevent possible command line buffer overflow. Increase the
1465 size of a couple of the debugger line buffers, and ensure that overflow
1466 cannot happen. ACPICA BZ 1037.
1468 iASL: Changed to abort immediately on serious errors during the parsing
1469 phase. Due to the nature of ASL, there is no point in attempting to
1470 compile these types of errors, and they typically end up causing a
1471 cascade of hundreds of errors which obscure the original problem.
1473 ----------------------------------------
1474 25 July 2013. Summary of changes for version 20130725:
1476 1) ACPICA kernel-resident subsystem:
1478 Fixed a problem with the DerefOf operator where references to FieldUnits
1479 and BufferFields incorrectly returned the parent object, not the actual
1480 value of the object. After this change, a dereference of a FieldUnit
1481 reference results in a read operation on the field to get the value, and
1482 likewise, the appropriate BufferField value is extracted from the target
1485 Fixed a problem where the _WAK method could cause a fault under these
1486 circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK
1487 method returned no value. The problem is rarely seen because most kernels
1488 run ACPICA in slack mode.
1490 For the DerefOf operator, a fatal error now results if an attempt is made
1491 to dereference a reference (created by the Index operator) to a NULL
1492 package element. Provides compatibility with other ACPI implementations,
1493 and this behavior will be added to a future version of the ACPI
1496 The ACPI Power Management Timer (defined in the FADT) is now optional.
1497 This provides compatibility with other ACPI implementations and will
1498 appear in the next version of the ACPI specification. If there is no PM
1499 Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of
1500 zero in the FADT indicates no PM timer.
1502 Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This
1503 allows the host to globally enable/disable all vendor strings, all
1504 feature strings, or both. Intended to be primarily used for debugging
1505 purposes only. Lv Zheng.
1507 Expose the collected _OSI data to the host via a global variable. This
1508 data tracks the highest level vendor ID that has been invoked by the BIOS
1509 so that the host (and potentially ACPICA itself) can change behaviors
1510 based upon the age of the BIOS.
1512 Example Code and Data Size: These are the sizes for the OS-independent
1513 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1514 debug version of the code includes the debug output trace mechanism and
1515 has a much larger code and data size.
1518 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
1519 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
1521 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
1522 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
1525 2) iASL Compiler/Disassembler and Tools:
1527 iASL: Created the following enhancements for the -so option (create
1529 1)Add offsets for the last nameseg in each namepath for every supported
1531 2)Add support for Processor, Device, Thermal Zone, and Scope objects
1532 3)Add the actual AML opcode for the parent object of every supported
1534 4)Add support for the ZERO/ONE/ONES AML opcodes for integer objects
1536 Disassembler: Emit all unresolved external symbols in a single block.
1537 These are external references to control methods that could not be
1538 resolved, and thus, the disassembler had to make a guess at the number of
1541 iASL: The argument to the -T option (create table template) is now
1542 optional. If not specified, the default table is a DSDT, typically the
1545 ----------------------------------------
1546 26 June 2013. Summary of changes for version 20130626:
1548 1) ACPICA kernel-resident subsystem:
1550 Fixed an issue with runtime repair of the _CST object. Null or invalid
1551 elements were not always removed properly. Lv Zheng.
1553 Removed an arbitrary restriction of 256 GPEs per GPE block (such as the
1554 FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device,
1555 the maximum number of GPEs is 1016. Use of multiple GPE block devices
1556 makes the system-wide number of GPEs essentially unlimited.
1558 Example Code and Data Size: These are the sizes for the OS-independent
1559 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1560 debug version of the code includes the debug output trace mechanism and
1561 has a much larger code and data size.
1564 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
1565 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
1567 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
1568 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
1571 2) iASL Compiler/Disassembler and Tools:
1573 Portable AcpiDump: Implemented full support for the Linux and FreeBSD
1574 hosts. Now supports Linux, FreeBSD, and Windows.
1576 Disassembler: Added some missing types for the HEST and EINJ tables: "Set
1577 Error Type With Address", "CMCI", "MCE", and "Flush Cacheline".
1579 iASL/Preprocessor: Implemented full support for nested
1580 #if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks.
1582 Disassembler: Expanded maximum output string length to 64K. Was 256 bytes
1583 max. The original purpose of this constraint was to limit the amount of
1584 debug output. However, the string function in question (UtPrintString) is
1585 now used for the disassembler also, where 256 bytes is insufficient.
1586 Reported by RehabMan@GitHub.
1588 iASL/DataTables: Fixed some problems and issues with compilation of DMAR
1589 tables. ACPICA BZ 999. Lv Zheng.
1591 iASL: Fixed a couple of error exit issues that could result in a "Could
1592 not delete <file>" message during ASL compilation.
1594 AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though
1595 the actual signatures for these tables are "FACP" and "APIC",
1598 AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI
1599 tables are allowed to have multiple instances.
1601 ----------------------------------------
1602 17 May 2013. Summary of changes for version 20130517:
1604 1) ACPICA kernel-resident subsystem:
1606 Fixed a regression introduced in version 20130328 for _INI methods. This
1607 change fixes a problem introduced in 20130328 where _INI methods are no
1608 longer executed properly because of a memory block that was not
1609 initialized correctly. ACPICA BZ 1016. Tomasz Nowicki
1610 <tomasz.nowicki@linaro.org>.
1612 Fixed a possible problem with the new extended sleep registers in the
1614 5.0 FADT. Do not use these registers (even if populated) unless the HW-
1615 reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ
1618 Implemented return value repair code for _CST predefined objects: Sort
1620 list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng.
1622 Implemented a debug-only option to disable loading of SSDTs from the
1623 RSDT/XSDT during ACPICA initialization. This can be useful for debugging
1624 ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in
1625 acglobal.h - ACPICA BZ 1005. Lv Zheng.
1627 Fixed some issues in the ACPICA initialization and termination code:
1628 Tomasz Nowicki <tomasz.nowicki@linaro.org>
1629 1) Clear events initialized flag upon event component termination. ACPICA
1631 2) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018.
1632 3) Delete global lock pending lock during termination. ACPICA BZ 1012.
1633 4) Clear debug buffer global on termination to prevent possible multiple
1634 delete. ACPICA BZ 1010.
1636 Standardized all switch() blocks across the entire source base. After
1638 years, different formatting for switch() had crept in. This change makes
1639 the formatting of every switch block identical. ACPICA BZ 997. Chao Guan.
1641 Split some files to enhance ACPICA modularity and configurability:
1642 1) Split buffer dump routines into utilities/utbuffer.c
1643 2) Split internal error message routines into utilities/uterror.c
1644 3) Split table print utilities into tables/tbprint.c
1645 4) Split iASL command-line option processing into asloptions.c
1647 Makefile enhancements:
1648 1) Support for all new files above.
1649 2) Abort make on errors from any subcomponent. Chao Guan.
1650 3) Add build support for Apple Mac OS X. Liang Qi.
1652 Example Code and Data Size: These are the sizes for the OS-independent
1653 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1654 debug version of the code includes the debug output trace mechanism and
1655 has a much larger code and data size.
1658 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
1659 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
1661 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
1662 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
1665 2) iASL Compiler/Disassembler and Tools:
1667 New utility: Implemented an easily portable version of the acpidump
1668 utility to extract ACPI tables from the system (or a file) in an ASCII
1670 dump format. The top-level code implements the various command line
1671 options, file I/O, and table dump routines. To port to a new host, only
1672 three functions need to be implemented to get tables -- since this
1673 functionality is OS-dependent. See the tools/acpidump/apmain.c module and
1674 the ACPICA reference for porting instructions. ACPICA BZ 859. Notes:
1675 1) The Windows version obtains the ACPI tables from the Registry.
1676 2) The Linux version is under development.
1677 3) Other hosts - If an OS-dependent module is submitted, it will be
1678 distributed with ACPICA.
1680 iASL: Fixed a regression for -D preprocessor option (define symbol). A
1681 restructuring/change to the initialization sequence caused this option to
1682 no longer work properly.
1684 iASL: Implemented a mechanism to disable specific warnings and remarks.
1685 Adds a new command line option, "-vw <messageid> as well as "#pragma
1686 disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore.
1688 iASL: Fix for too-strict package object validation. The package object
1689 validation for return values from the predefined names is a bit too
1690 strict, it does not allow names references within the package (which will
1691 be resolved at runtime.) These types of references cannot be validated at
1692 compile time. This change ignores named references within package objects
1693 for names that return or define static packages.
1695 Debugger: Fixed the 80-character command line limitation for the History
1696 command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan.
1698 iASL: Added control method and package support for the -so option
1699 (generates AML offset table for BIOS support.)
1701 iASL: issue a remark if a non-serialized method creates named objects. If
1702 a thread blocks within the method for any reason, and another thread
1703 enters the method, the method will fail because an attempt will be made
1705 create the same (named) object twice. In this case, issue a remark that
1706 the method should be marked serialized. NOTE: may become a warning later.
1709 ----------------------------------------
1710 18 April 2013. Summary of changes for version 20130418:
1712 1) ACPICA kernel-resident subsystem:
1714 Fixed a possible buffer overrun during some rare but specific field unit
1715 read operations. This overrun can only happen if the DSDT version is 1 --
1716 meaning that all AML integers are 32 bits -- and the field length is
1717 between 33 and 55 bits long. During the read, an internal buffer object
1719 created for the field unit because the field is larger than an integer
1721 bits). However, in this case, the buffer will be incorrectly written
1722 beyond the end because the buffer length is less than the internal
1724 of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes
1725 long, but a full 8 bytes will be written.
1727 Updated the Embedded Controller "orphan" _REG method support. This refers
1728 to _REG methods under the EC device that have no corresponding operation
1729 region. This is allowed by the ACPI specification. This update removes a
1730 dependency on the existence an ECDT table. It will execute an orphan _REG
1731 method as long as the operation region handler for the EC is installed at
1732 the EC device node and not the namespace root. Rui Zhang (original
1733 update), Bob Moore (update/integrate).
1735 Implemented run-time argument typechecking for all predefined ACPI names
1736 (_STA, _BIF, etc.) This change performs object typechecking on all
1737 incoming arguments for all predefined names executed via
1738 AcpiEvaluateObject. This ensures that ACPI-related device drivers are
1739 passing correct object types as well as the correct number of arguments
1740 (therefore identifying any issues immediately). Also, the ASL/namespace
1741 definition of the predefined name is checked against the ACPI
1742 specification for the proper argument count. Adds one new file,
1745 Changed an exception code for the ASL UnLoad() operator. Changed the
1746 exception code for the case where the input DdbHandle is invalid, from
1747 AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE.
1749 Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the
1750 global makefile. The use of this flag causes compiler errors on earlier
1751 versions of GCC, so it has been removed for compatibility.
1753 Miscellaneous cleanup:
1754 1) Removed some unused/obsolete macros
1755 2) Fixed a possible memory leak in the _OSI support
1756 3) Removed an unused variable in the predefined name support
1757 4) Windows OSL: remove obsolete reference to a memory list field
1759 Example Code and Data Size: These are the sizes for the OS-independent
1760 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1761 debug version of the code includes the debug output trace mechanism and
1762 has a much larger code and data size.
1765 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
1766 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
1768 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
1769 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
1772 2) iASL Compiler/Disassembler and Tools:
1774 AcpiExec: Added installation of a handler for the SystemCMOS address
1775 space. This prevents control method abort if a method accesses this
1778 AcpiExec: Added support for multiple EC devices, and now install EC
1779 operation region handler(s) at the actual EC device instead of the
1780 namespace root. This reflects the typical behavior of host operating
1783 AcpiExec: Updated to ensure that all operation region handlers are
1784 installed before the _REG methods are executed. This prevents a _REG
1785 method from aborting if it accesses an address space has no handler.
1786 AcpiExec installs a handler for every possible address space.
1788 Debugger: Enhanced the "handlers" command to display non-root handlers.
1789 This change enhances the handlers command to display handlers associated
1790 with individual devices throughout the namespace, in addition to the
1791 currently supported display of handlers associated with the root
1795 ASL Test Suite: Several test suite errors have been identified and
1796 resolved, reducing the total error count during execution. Chao Guan.
1798 ----------------------------------------
1799 28 March 2013. Summary of changes for version 20130328:
1801 1) ACPICA kernel-resident subsystem:
1803 Fixed several possible race conditions with the internal object reference
1804 counting mechanism. Some of the external ACPICA interfaces update object
1805 reference counts without holding the interpreter or namespace lock. This
1806 change adds a spinlock to protect reference count updates on the internal
1807 ACPICA objects. Reported by and with assistance from Andriy Gapon
1810 FADT support: Removed an extraneous warning for very large GPE register
1811 sets. This change removes a size mismatch warning if the legacy length
1812 field for a GPE register set is larger than the 64-bit GAS structure can
1813 accommodate. GPE register sets can be larger than the 255-bit width
1814 limitation of the GAS structure. Linn Crosetto (linn@hp.com).
1816 _OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error
1817 return from this interface. Handles a possible timeout case if
1818 ACPI_WAIT_FOREVER is modified by the host to be a value less than
1819 "forever". Jung-uk Kim.
1821 Predefined name support: Add allowed/required argument type information
1823 the master predefined info table. This change adds the infrastructure to
1824 enable typechecking on incoming arguments for all predefined
1825 methods/objects. It does not actually contain the code that will fully
1826 utilize this information, this is still under development. Also condenses
1827 some duplicate code for the predefined names into a new module,
1828 utilities/utpredef.c
1830 Example Code and Data Size: These are the sizes for the OS-independent
1831 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1832 debug version of the code includes the debug output trace mechanism and
1833 has a much larger code and data size.
1836 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
1837 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
1839 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
1840 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
1843 2) iASL Compiler/Disassembler and Tools:
1845 iASL: Implemented a new option to simplify the development of ACPI-
1847 BIOS code. Adds support for a new "offset table" output file. The -so
1848 option will create a C table containing the AML table offsets of various
1849 named objects in the namespace so that BIOS code can modify them easily
1851 boot time. This can simplify BIOS runtime code by eliminating expensive
1852 searches for "magic values", enhancing boot times and adding greater
1853 reliability. With assistance from Lee Hamel.
1855 iASL: Allow additional predefined names to return zero-length packages.
1856 Now, all predefined names that are defined by the ACPI specification to
1857 return a "variable-length package of packages" are allowed to return a
1858 zero length top-level package. This allows the BIOS to tell the host that
1859 the requested feature is not supported, and supports existing BIOS/ASL
1862 iASL: Changed the "result not used" warning to an error. This is the case
1863 where an ASL operator is effectively a NOOP because the result of the
1864 operation is not stored anywhere. For example:
1866 There is no target (missing 3rd argument), nor is the function return
1867 value used. This is potentially a very serious problem -- since the code
1868 was probably intended to do something, but for whatever reason, the value
1869 was not stored. Therefore, this issue has been upgraded from a warning to
1872 AcpiHelp: Added allowable/required argument types to the predefined names
1873 info display. This feature utilizes the recent update to the predefined
1874 names table (above).
1876 ----------------------------------------
1877 14 February 2013. Summary of changes for version 20130214:
1879 1) ACPICA Kernel-resident Subsystem:
1881 Fixed a possible regression on some hosts: Reinstated the safe return
1882 macros (return_ACPI_STATUS, etc.) that ensure that the argument is
1883 evaluated only once. Although these macros are not needed for the ACPICA
1884 code itself, they are often used by ACPI-related host device drivers
1886 the safe feature may be necessary.
1888 Fixed several issues related to the ACPI 5.0 reduced hardware support
1889 (SOC): Now ensure that if the platform declares itself as hardware-
1891 via the FADT, the following functions become NOOPs (and always return
1892 AE_OK) because ACPI is always enabled by definition on these machines:
1898 Dynamic Object Repair: Implemented additional runtime repairs for
1899 predefined name return values. Both of these repairs can simplify code in
1900 the related device drivers that invoke these methods:
1901 1) For the _STR and _MLS names, automatically repair/convert an ASCII
1902 string to a Unicode buffer.
1903 2) For the _CRS, _PRS, and _DMA names, return a resource descriptor with
1905 lone end tag descriptor in the following cases: A Return(0) was executed,
1906 a null buffer was returned, or no object at all was returned (non-slack
1907 mode only). Adds a new file, nsconvert.c
1908 ACPICA BZ 998. Bob Moore, Lv Zheng.
1910 Resource Manager: Added additional code to prevent possible infinite
1912 while traversing corrupted or ill-formed resource template buffers. Check
1913 for zero-length resource descriptors in all code that loops through
1914 resource templates (the length field is used to index through the
1915 template). This change also hardens the external AcpiWalkResources and
1916 AcpiWalkResourceBuffer interfaces.
1918 Local Cache Manager: Enhanced the main data structure to eliminate an
1919 unnecessary mechanism to access the next object in the list. Actually
1920 provides a small performance enhancement for hosts that use the local
1921 ACPICA cache manager. Jung-uk Kim.
1923 Example Code and Data Size: These are the sizes for the OS-independent
1924 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1925 debug version of the code includes the debug output trace mechanism and
1926 has a much larger code and data size.
1929 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
1930 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
1932 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
1933 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
1936 2) iASL Compiler/Disassembler and Tools:
1938 iASL/Disassembler: Fixed several issues with the definition of the ACPI
1939 5.0 RASF table (RAS Feature Table). This change incorporates late changes
1940 that were made to the ACPI 5.0 specification.
1942 iASL/Disassembler: Added full support for the following new ACPI tables:
1943 1) The MTMR table (MID Timer Table)
1944 2) The VRTC table (Virtual Real Time Clock Table).
1945 Includes header file, disassembler, table compiler, and template support
1948 iASL: Implemented compile-time validation of package objects returned by
1949 predefined names. This new feature validates static package objects
1950 returned by the various predefined names defined to return packages. Both
1951 object types and package lengths are validated, for both parent packages
1952 and sub-packages, if any. The code is similar in structure and behavior
1954 the runtime repair mechanism within the AML interpreter and uses the
1955 existing predefined name information table. Adds a new file, aslprepkg.c.
1958 iASL: Implemented auto-detection of binary ACPI tables for disassembly.
1959 This feature detects a binary file with a valid ACPI table header and
1960 invokes the disassembler automatically. Eliminates the need to
1961 specifically invoke the disassembler with the -d option. ACPICA BZ 862.
1963 iASL/Disassembler: Added several warnings for the case where there are
1964 unresolved control methods during the disassembly. This can potentially
1965 cause errors when the output file is compiled, because the disassembler
1966 assumes zero method arguments in these cases (it cannot determine the
1967 actual number of arguments without resolution/definition of the method).
1969 Debugger: Added support to display all resources with a single command.
1970 Invocation of the resources command with no arguments will now display
1972 resources within the current namespace.
1974 AcpiHelp: Added descriptive text for each ACPICA exception code displayed
1977 ----------------------------------------
1978 17 January 2013. Summary of changes for version 20130117:
1980 1) ACPICA Kernel-resident Subsystem:
1982 Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to
1983 return either 1 or 2 integers. Although the ACPI spec defines the \_Sx
1984 objects to return a package containing one integer, most BIOS code
1986 two integers and the previous code reflects that. However, we also need
1988 support BIOS code that actually implements to the ACPI spec, and this
1989 change reflects this.
1991 Fixed two issues with the ACPI_DEBUG_PRINT macros:
1992 1) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for
1993 C compilers that require this support.
1994 2) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since
1995 ACPI_DEBUG is already used by many of the various hosts.
1997 Updated all ACPICA copyrights and signons to 2013. Added the 2013
1998 copyright to all module headers and signons, including the standard Linux
1999 header. This affects virtually every file in the ACPICA core subsystem,
2000 iASL compiler, all ACPICA utilities, and the test suites.
2002 Example Code and Data Size: These are the sizes for the OS-independent
2003 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2004 debug version of the code includes the debug output trace mechanism and
2005 has a much larger code and data size.
2008 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
2009 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
2011 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
2012 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
2015 2) iASL Compiler/Disassembler and Tools:
2017 Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and
2018 prevent a possible fault on some hosts. Some C libraries modify the arg
2019 pointer parameter to vfprintf making it difficult to call it twice in the
2020 AcpiOsVprintf function. Use a local buffer to workaround this issue. This
2021 does not affect the Windows OSL since the Win C library does not modify
2022 the arg pointer. Chao Guan, Bob Moore.
2024 iASL: Fixed a possible infinite loop when the maximum error count is
2025 reached. If an output file other than the .AML file is specified (such as
2026 a listing file), and the maximum number of errors is reached, do not
2027 attempt to flush data to the output file(s) as the compiler is aborting.
2028 This can cause an infinite loop as the max error count code essentially
2029 keeps calling itself.
2031 iASL/Disassembler: Added an option (-in) to ignore NOOP
2033 Implemented for both the compiler and the disassembler. Often, the NOOP
2034 opcode is used as padding for packages that are changed dynamically by
2036 BIOS. When disassembled and recompiled, these NOOPs will cause syntax
2037 errors. This option causes the disassembler to ignore all NOOP opcodes
2038 (0xA3), and it also causes the compiler to ignore all ASL source code
2042 Debugger: Enhanced the Sleep command to execute all sleep states. This
2043 change allows Sleep to be invoked with no arguments and causes the
2044 debugger to execute all of the sleep states, 0-5, automatically.
2046 ----------------------------------------
2047 20 December 2012. Summary of changes for version 20121220:
2049 1) ACPICA Kernel-resident Subsystem:
2051 Implemented a new interface, AcpiWalkResourceBuffer. This interface is an
2052 alternate entry point for AcpiWalkResources and improves the usability of
2053 the resource manager by accepting as input a buffer containing the output
2054 of either a _CRS, _PRS, or _AEI method. The key functionality is that the
2055 input buffer is not deleted by this interface so that it can be used by
2056 the host later. See the ACPICA reference for details.
2058 Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table
2059 (DSDT version < 2). The constant will be truncated and this warning
2060 reflects that behavior.
2062 Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ,
2063 ExtendedInterrupt, and GpioInt descriptors. This change adds support to
2064 both get and set the new wake bit in these descriptors, separately from
2065 the existing share bit. Reported by Aaron Lu.
2067 Interpreter: Fix Store() when an implicit conversion is not possible. For
2068 example, in the cases such as a store of a string to an existing package
2069 object, implement the store as a CopyObject(). This is a small departure
2070 from the ACPI specification which states that the control method should
2072 aborted in this case. However, the ASLTS suite depends on this behavior.
2074 Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT
2075 macros: check if debug output is currently enabled as soon as possible to
2076 minimize performance impact if debug is in fact not enabled.
2078 Source code restructuring: Cleanup to improve modularity. The following
2079 new files have been added: dbconvert.c, evhandler.c, nsprepkg.c,
2080 psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c.
2081 Associated makefiles and project files have been updated.
2083 Changed an exception code for LoadTable operator. For the case where one
2084 of the input strings is too long, change the returned exception code from
2085 AE_BAD_PARAMETER to AE_AML_STRING_LIMIT.
2087 Fixed a possible memory leak in dispatcher error path. On error, delete
2088 the mutex object created during method mutex creation. Reported by
2089 tim.gardner@canonical.com.
2091 Example Code and Data Size: These are the sizes for the OS-independent
2092 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2093 debug version of the code includes the debug output trace mechanism and
2094 has a much larger code and data size.
2097 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
2098 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
2100 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
2101 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
2104 2) iASL Compiler/Disassembler and Tools:
2106 iASL: Disallow a method call as argument to the ObjectType ASL operator.
2107 This change tracks an errata to the ACPI 5.0 document. The AML grammar
2108 will not allow the interpreter to differentiate between a method and a
2109 method invocation when these are used as an argument to the ObjectType
2110 operator. The ACPI specification change is to disallow a method
2112 (UserTerm) for the ObjectType operator.
2114 Finish support for the TPM2 and CSRT tables in the headers, table
2115 compiler, and disassembler.
2117 Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout
2118 always expires immediately if the semaphore is not available. The
2120 code was using a relative-time timeout, but sem_timedwait requires the
2122 of an absolute time.
2124 iASL: Added a remark if the Timer() operator is used within a 32-bit
2125 table. This operator returns a 64-bit time value that will be truncated
2126 within a 32-bit table.
2128 iASL Source code restructuring: Cleanup to improve modularity. The
2129 following new files have been added: aslhex.c, aslxref.c, aslnamesp.c,
2130 aslmethod.c, and aslfileio.c. Associated makefiles and project files have
2134 ----------------------------------------
2135 14 November 2012. Summary of changes for version 20121114:
2137 1) ACPICA Kernel-resident Subsystem:
2139 Implemented a performance enhancement for ACPI/AML Package objects. This
2140 change greatly increases the performance of Package objects within the
2141 interpreter. It changes the processing of reference counts for packages
2143 optimizing for the most common case where the package sub-objects are
2144 either Integers, Strings, or Buffers. Increases the overall performance
2146 the ASLTS test suite by 1.5X (Increases the Slack Mode performance by
2148 Chao Guan. ACPICA BZ 943.
2150 Implemented and deployed common macros to extract flag bits from resource
2151 descriptors. Improves readability and maintainability of the code. Fixes
2153 problem with the UART serial bus descriptor for the number of data bits
2154 flags (was incorrectly 2 bits, should be 3).
2156 Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation
2157 of the macros and changed the SETx macros to the style of (destination,
2158 source). Also added ACPI_CASTx companion macros. Lv Zheng.
2160 Example Code and Data Size: These are the sizes for the OS-independent
2161 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2162 debug version of the code includes the debug output trace mechanism and
2163 has a much larger code and data size.
2166 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
2167 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
2169 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
2170 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
2173 2) iASL Compiler/Disassembler and Tools:
2175 Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change
2176 adds the ShareAndWake and ExclusiveAndWake flags which were added to the
2177 Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986.
2179 Disassembler: Fixed a problem with external declaration generation. Fixes
2180 a problem where an incorrect pathname could be generated for an external
2181 declaration if the original reference to the object includes leading
2182 carats (^). ACPICA BZ 984.
2184 Debugger: Completed a major update for the Disassemble<method> command.
2185 This command was out-of-date and did not properly disassemble control
2186 methods that had any reasonable complexity. This fix brings the command
2188 to the same level as the rest of the disassembler. Adds one new file,
2189 dmdeferred.c, which is existing code that is now common with the main
2190 disassembler and the debugger disassemble command. ACPICA MZ 978.
2192 iASL: Moved the parser entry prototype to avoid a duplicate declaration.
2193 Newer versions of Bison emit this prototype, so moved the prototype out
2195 the iASL header to where it is actually used in order to avoid a
2199 iASL/Tools: Standardized use of the stream I/O functions:
2200 1) Ensure check for I/O error after every fopen/fread/fwrite
2201 2) Ensure proper order of size/count arguments for fread/fwrite
2202 3) Use test of (Actual != Requested) after all fwrite, and most fread
2203 4) Standardize I/O error messages
2204 Improves reliability and maintainability of the code. Bob Moore, Lv
2208 Disassembler: Prevent duplicate External() statements. During generation
2209 of external statements, detect similar pathnames that are actually
2210 duplicates such as these:
2213 Remove all leading '\' characters from pathnames during the external
2214 statement generation so that duplicates will be detected and tossed.
2217 Tools: Replace low-level I/O with stream I/O functions. Replace
2218 open/read/write/close with the stream I/O equivalents
2219 fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob
2222 AcpiBin: Fix for the dump-to-hex function. Now correctly output the table
2223 name header so that AcpiXtract recognizes the output file/table.
2225 iASL: Remove obsolete -2 option flag. Originally intended to force the
2226 compiler/disassembler into an ACPI 2.0 mode, this was never implemented
2227 and the entire concept is now obsolete.
2229 ----------------------------------------
2230 18 October 2012. Summary of changes for version 20121018:
2233 1) ACPICA Kernel-resident Subsystem:
2235 Updated support for the ACPI 5.0 MPST table. Fixes some problems
2236 introduced by late changes to the table as it was added to the ACPI 5.0
2237 specification. Includes header, disassembler, and data table compiler
2238 support as well as a new version of the MPST template.
2240 AcpiGetObjectInfo: Enhanced the device object support to include the ACPI
2241 5.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID
2242 methods: _HID, _CID, and _UID.
2244 Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed
2245 ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent
2246 name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId)
2247 names for their various drivers. Affects the AcpiGetObjectInfo external
2248 interface, and other internal interfaces as well.
2250 Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME.
2251 This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME
2252 on machines that support non-aligned transfers. Optimizes for this case
2253 rather than using a strncpy. With assistance from Zheng Lv.
2255 Resource Manager: Small fix for buffer size calculation. Fixed a one byte
2256 error in the output buffer calculation. Feng Tang. ACPICA BZ 849.
2258 Added a new debug print message for AML mutex objects that are force-
2259 released. At control method termination, any currently acquired mutex
2260 objects are force-released. Adds a new debug-only message for each one
2263 Audited/updated all ACPICA return macros and the function debug depth
2264 counter: 1) Ensure that all functions that use the various TRACE macros
2265 also use the appropriate ACPICA return macros. 2) Ensure that all normal
2266 return statements surround the return expression (value) with parens to
2267 ensure consistency across the ACPICA code base. Guan Chao, Tang Feng,
2268 Zheng Lv, Bob Moore. ACPICA Bugzilla 972.
2270 Global source code changes/maintenance: All extra lines at the start and
2271 end of each source file have been removed for consistency. Also, within
2272 comments, all new sentences start with a single space instead of a double
2273 space, again for consistency across the code base.
2275 Example Code and Data Size: These are the sizes for the OS-independent
2276 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2277 debug version of the code includes the debug output trace mechanism and
2278 has a much larger code and data size.
2281 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
2282 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
2284 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
2285 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
2288 2) iASL Compiler/Disassembler and Tools:
2290 AcpiExec: Improved the algorithm used for memory leak/corruption
2291 detection. Added some intelligence to the code that maintains the global
2292 list of allocated memory. The list is now ordered by allocated memory
2293 address, significantly improving performance. When running AcpiExec on
2294 the ASLTS test suite, speed improvements of 3X to 5X are seen, depending
2295 on the platform and/or the environment. Note, this performance
2296 enhancement affects the AcpiExec utility only, not the kernel-resident
2299 Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For
2300 the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix
2301 incorrect table offset reported for invalid opcodes. Report the original
2302 32-bit value for bad ACPI_NAMEs (as well as the repaired name.)
2304 Disassembler: Enhanced the -vt option to emit the binary table data in
2305 hex format to assist with debugging.
2307 Fixed a potential filename buffer overflow in osunixdir.c. Increased the
2308 size of file structure. Colin Ian King.
2310 ----------------------------------------
2311 13 September 2012. Summary of changes for version 20120913:
2314 1) ACPICA Kernel-resident Subsystem:
2316 ACPI 5.0: Added two new notify types for the Hardware Error Notification
2317 Structure within the Hardware Error Source Table (HEST) table -- CMCI(5)
2321 Table Manager: Merged/removed duplicate code in the root table resize
2322 functions. One function is external, the other is internal. Lv Zheng,
2326 Makefiles: Completely removed the obsolete "Linux" makefiles under
2327 acpica/generate/linux. These makefiles are obsolete and have been
2330 the generic unix makefiles under acpica/generate/unix.
2332 Makefiles: Ensure that binary files always copied properly. Minor rule
2334 to ensure that the final binary output files are always copied up to the
2335 appropriate binary directory (bin32 or bin64.)
2337 Example Code and Data Size: These are the sizes for the OS-independent
2338 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2340 version of the code includes the debug output trace mechanism and has a
2342 larger code and data size.
2345 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
2346 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
2348 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
2349 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
2352 2) iASL Compiler/Disassembler and Tools:
2354 Disassembler: Fixed a possible fault during the disassembly of resource
2355 descriptors when a second parse is required because of the invocation of
2356 external control methods within the table. With assistance from
2357 adq@lidskialf.net. ACPICA BZ 976.
2359 iASL: Fixed a namepath optimization problem. An error can occur if the
2361 node that contains the namepath to be optimized does not have a parent
2363 that is a named object. This change fixes the problem.
2365 iASL: Fixed a regression where the AML file is not deleted on errors. The
2367 output file should be deleted if there are any errors during the
2370 only exception is if the -f (force output) option is used. ACPICA BZ 974.
2372 iASL: Added a feature to automatically increase internal line buffer
2374 Via realloc(), automatically increase the internal line buffer sizes as
2375 necessary to support very long source code lines. The current version of
2377 preprocessor requires a buffer long enough to contain full source code
2379 This change increases the line buffer(s) if the input lines go beyond the
2380 current buffer size. This eliminates errors that occurred when a source
2382 line was longer than the buffer.
2384 iASL: Fixed a problem with constant folding in method declarations. The
2385 SyncLevel term is a ByteConstExpr, and incorrect code would be generated
2387 Type3 opcode was used.
2389 Debugger: Improved command help support. For incorrect argument count,
2391 full help for the command. For help command itself, allow an argument to
2394 Test Suites: Several bug fixes for the ASLTS suite reduces the number of
2395 errors during execution of the suite. Guan Chao.
2397 ----------------------------------------
2398 16 August 2012. Summary of changes for version 20120816:
2401 1) ACPICA Kernel-resident Subsystem:
2403 Removed all use of the deprecated _GTS and _BFS predefined methods. The
2405 (Going To Sleep) and _BFS (Back From Sleep) methods are essentially
2406 deprecated and will probably be removed from the ACPI specification.
2408 does not invoke them, and reportedly never will. The final nail in the
2410 is that the ACPI specification states that these methods must be run with
2411 interrupts off, which is not going to happen in a kernel interpreter.
2413 Linux has removed all use of the methods also. It was discovered that
2414 invoking these functions caused failures on some machines, probably
2416 they were never tested since Windows does not call them. Affects two
2418 interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng.
2421 Implemented support for complex bit-packed buffers returned from the _PLD
2422 (Physical Location of Device) predefined method. Adds a new external
2423 interface, AcpiDecodePldBuffer that parses the buffer into a more usable
2425 structure. Note: C Bitfields cannot be used for this type of predefined
2426 structure since the memory layout of individual bitfields is not defined
2428 the C language. In addition, there are endian concerns where a compiler
2430 change the bitfield ordering based on the machine type. The new ACPICA
2431 interface eliminates these issues, and should be called after _PLD is
2432 executed. ACPICA BZ 954.
2434 Implemented a change to allow a scope change to root (via "Scope (\)")
2436 execution of module-level ASL code (code that is executed at table load
2439 Added the Windows8/Server2012 string for the _OSI method. This change
2442 new _OSI string, "Windows 2012" for both Windows 8 and Windows Server
2445 Added header support for the new ACPI tables DBG2 (Debug Port Table Type
2447 and CSRT (Core System Resource Table).
2449 Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined
2450 names. This simplifies access to the buffers returned by these predefined
2451 names. Adds a new file, include/acbuffer.h. ACPICA BZ 956.
2453 GPE support: Removed an extraneous parameter from the various low-level
2454 internal GPE functions. Tang Feng.
2456 Removed the linux makefiles from the unix packages. The generate/linux
2457 makefiles are obsolete and have been removed from the unix tarball
2459 packages. The replacement makefiles are under generate/unix, and there is
2461 top-level makefile under the main acpica directory. ACPICA BZ 967, 912.
2463 Updates for Unix makefiles:
2464 1) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven.
2465 2) Update linker flags (move to end of command line) for AcpiExec
2469 Split ACPICA initialization functions to new file, utxfinit.c. Split from
2470 utxface.c to improve modularity and reduce file size.
2472 Example Code and Data Size: These are the sizes for the OS-independent
2473 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2474 debug version of the code includes the debug output trace mechanism and
2476 much larger code and data size.
2479 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
2480 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
2482 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
2483 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
2486 2) iASL Compiler/Disassembler and Tools:
2488 iASL: Fixed a problem with constant folding for fixed-length constant
2489 expressions. The constant-folding code was not being invoked for constant
2490 expressions that allow the use of type 3/4/5 opcodes to generate
2492 for expressions such as ByteConstExpr, WordConstExpr, etc. This could
2494 in the generation of invalid AML bytecode. ACPICA BZ 970.
2496 iASL: Fixed a generation issue on newer versions of Bison. Newer versions
2497 apparently automatically emit some of the necessary externals. This
2499 handles these versions in order to eliminate generation warnings.
2501 Disassembler: Added support to decode the DBG2 and CSRT ACPI tables.
2503 Disassembler: Add support to decode _PLD buffers. The decoded buffer
2505 within comments in the output file.
2507 Debugger: Fixed a regression with the "Threads" command where
2508 AE_BAD_PARAMETER was always returned.
2510 ----------------------------------------
2511 11 July 2012. Summary of changes for version 20120711:
2513 1) ACPICA Kernel-resident Subsystem:
2515 Fixed a possible fault in the return package object repair code. Fixes a
2516 problem that can occur when a lone package object is wrapped with an
2518 package object in order to force conformance to the ACPI specification.
2520 affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX,
2524 Removed code to disable/enable bus master arbitration (ARB_DIS bit in the
2525 PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the
2526 ARB_DIS bit must be implemented in the host-dependent C3 processor power
2528 support. Note, ARB_DIS is obsolete and only applies to older chipsets,
2530 Intel and other vendors. (for Intel: ICH4-M and earlier)
2532 This change removes the code to disable/enable bus master arbitration
2534 suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register
2536 resume problems on some machines. The change has been in use for over
2540 Implemented two new external interfaces to support host-directed dynamic
2542 table load and unload. They are intended to simplify the host
2544 of hot-plug support:
2545 AcpiLoadTable: Load an SSDT from a buffer into the namespace.
2546 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the
2548 See the ACPICA reference for additional details. Adds one new file,
2549 components/tables/tbxfload.c
2551 Implemented and deployed two new interfaces for errors and warnings that
2553 known to be caused by BIOS/firmware issues:
2554 AcpiBiosError: Prints "ACPI Firmware Error" message.
2555 AcpiBiosWarning: Prints "ACPI Firmware Warning" message.
2556 Deployed these new interfaces in the ACPICA Table Manager code for ACPI
2558 and FADT errors. Additional deployment to be completed as appropriate in
2560 future. The associated conditional macros are ACPI_BIOS_ERROR and
2561 ACPI_BIOS_WARNING. See the ACPICA reference for additional details.
2566 Implicit notify support: ensure that no memory allocation occurs within a
2567 critical region. This fix moves a memory allocation outside of the time
2569 spinlock is held. Fixes issues on systems that do not allow this
2573 Split exception code utilities and tables into a new file,
2576 Example Code and Data Size: These are the sizes for the OS-independent
2577 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2579 version of the code includes the debug output trace mechanism and has a
2581 larger code and data size.
2584 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
2585 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
2587 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
2588 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
2591 2) iASL Compiler/Disassembler and Tools:
2593 iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead
2597 Debugger: Enhanced the "tables" command to emit additional information
2599 the current set of ACPI tables, including the owner ID and flags decode.
2601 Debugger: Reimplemented the "unload" command to use the new
2602 AcpiUnloadParentTable external interface. This command was disable
2604 due to need for an unload interface.
2606 AcpiHelp: Added a new option to decode ACPICA exception codes. The -e
2608 will decode 16-bit hex status codes (ACPI_STATUS) to name strings.
2610 ----------------------------------------
2611 20 June 2012. Summary of changes for version 20120620:
2614 1) ACPICA Kernel-resident Subsystem:
2616 Implemented support to expand the "implicit notify" feature to allow
2618 devices to be notified by a single GPE. This feature automatically
2620 runtime device notification in the absence of a BIOS-provided GPE control
2621 method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit
2623 provided by ACPICA for Windows compatibility, and is a workaround for
2626 code errors. See the description of the AcpiSetupGpeForWake interface in
2628 APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918.
2630 Changed some comments and internal function names to simplify and ensure
2631 correctness of the Linux code translation. No functional changes.
2633 Example Code and Data Size: These are the sizes for the OS-independent
2634 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2636 version of the code includes the debug output trace mechanism and has a
2638 larger code and data size.
2641 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
2642 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
2644 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
2645 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
2648 2) iASL Compiler/Disassembler and Tools:
2650 Disassembler: Added support to emit short, commented descriptions for the
2652 predefined names in order to improve the readability of the disassembled
2653 output. ACPICA BZ 959. Changes include:
2654 1) Emit descriptions for all standard predefined names (_INI, _STA,
2657 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.)
2658 3) Emit descriptions for the resource descriptor names (_MIN, _LEN,
2661 AcpiSrc: Fixed several long-standing Linux code translation issues.
2663 descriptions in function headers are now translated properly to lower
2666 underscores. ACPICA BZ 961. Also fixes translation problems such as
2672 local_fADT -> local_FADT
2673 execute_oSI -> execute_OSI
2675 iASL: Fixed a problem where null bytes were inadvertently emitted into
2679 iASL: Added the existing debug options to the standard help screen. There
2681 no longer two different help screens. ACPICA BZ 957.
2683 AcpiHelp: Fixed some typos in the various predefined name descriptions.
2685 expand some of the descriptions where appropriate.
2687 iASL: Fixed the -ot option (display compile times/statistics). Was not
2689 properly for standard output; only worked for the debug file case.
2691 ----------------------------------------
2692 18 May 2012. Summary of changes for version 20120518:
2695 1) ACPICA Core Subsystem:
2697 Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is
2699 to block until asynchronous events such as notifies and GPEs have
2701 Within ACPICA, it is only called before a notify or GPE handler is
2702 removed/uninstalled. It also may be useful for the host OS within related
2703 drivers such as the Embedded Controller driver. See the ACPICA reference
2705 additional information. ACPICA BZ 868.
2707 ACPI Tables: Added a new error message for a possible overflow failure
2709 the conversion of FADT 32-bit legacy register addresses to internal
2712 bit GAS structure representation. The GAS has a one-byte "bit length"
2714 thus limiting the register length to 255 bits. ACPICA BZ 953.
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: 92.9K Code, 25.0K Data, 117.9K Total
2725 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
2727 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
2728 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
2731 2) iASL Compiler/Disassembler and Tools:
2733 iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL
2735 This keyword was added late in the ACPI 5.0 release cycle and was not
2736 implemented until now.
2738 Disassembler: Added support for Operation Region externals. Adds missing
2739 support for operation regions that are defined in another table, and
2740 referenced locally via a Field or BankField ASL operator. Now generates
2742 correct External statement.
2744 Disassembler: Several additional fixes for the External() statement
2746 related to some ASL operators. Also, order the External() statements
2747 alphabetically in the disassembler output. Fixes the External()
2750 the Create* field, Alias, and Scope operators:
2751 1) Create* buffer field operators - fix type mismatch warning on
2753 2) Alias - implement missing External support
2754 3) Scope - fix to make sure all necessary externals are emitted.
2756 iASL: Improved pathname support. For include files, merge the prefix
2758 with the file pathname and eliminate unnecessary components. Convert
2759 backslashes in all pathnames to forward slashes, for readability. Include
2761 pathname changes affect both #include and Include() type operators.
2763 iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the
2765 of a valid line by inserting a newline and then returning the EOF during
2767 next call to GetNextLine. Prevents the line from being ignored due to EOF
2770 iASL: Implemented some changes to enhance the IDE support (-vi option.)
2772 and Warning messages are now correctly recognized for both the source
2774 browser and the global error and warning counts.
2776 ----------------------------------------
2777 20 April 2012. Summary of changes for version 20120420:
2780 1) ACPICA Core Subsystem:
2782 Implemented support for multiple notify handlers. This change adds
2785 allow multiple system and device notify handlers on Device, Thermal Zone,
2787 Processor objects. This can simplify the host OS notification
2789 Also re-worked and restructured the entire notify support code to
2791 handler installation, handler removal, notify event queuing, and notify
2792 dispatch to handler(s). Note: there can still only be two global notify
2793 handlers - one for system notifies and one for device notifies. There are
2795 changes to the existing handler install/remove interfaces. Lin Ming, Bob
2796 Moore, Rafael Wysocki.
2798 Fixed a regression in the package repair code where the object reference
2799 count was calculated incorrectly. Regression was introduced in the commit
2800 "Support to add Package wrappers".
2802 Fixed a couple possible memory leaks in the AML parser, in the error
2804 path. Jesper Juhl, Lin Ming.
2806 Example Code and Data Size: These are the sizes for the OS-independent
2807 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2808 debug version of the code includes the debug output trace mechanism and
2810 much larger code and data size.
2813 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
2814 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
2816 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
2817 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
2820 2) iASL Compiler/Disassembler and Tools:
2822 iASL: Fixed a problem with the resource descriptor support where the
2824 of the StartDependentFn and StartDependentFnNoPrio descriptors were not
2825 included in cumulative descriptor offset, resulting in incorrect values
2827 resource tags within resource descriptors appearing after a
2829 descriptor. Reported by Petr Vandrovec. ACPICA BZ 949.
2831 iASL and Preprocessor: Implemented full support for the #line directive
2833 correctly track original source file line numbers through the .i
2835 output file - for error and warning messages.
2837 iASL: Expand the allowable byte constants for address space IDs.
2839 the allowable range was 0x80-0xFF (user-defined spaces), now the range is
2840 0x0A-0xFF to allow for custom and new IDs without changing the compiler.
2842 iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948.
2844 iASL: Add option to completely disable the preprocessor (-Pn).
2846 iASL: Now emit all error/warning messages to standard error (stderr) by
2847 default (instead of the previous stdout).
2849 ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch().
2851 for resource descriptor offset fix above. Update/cleanup error output
2852 routines. Enable and send iASL errors/warnings to an error logfile
2853 (error.txt). Send all other iASL output to a logfile (compiler.txt).
2855 several extraneous "unrecognized operator" messages.
2857 ----------------------------------------
2858 20 March 2012. Summary of changes for version 20120320:
2861 1) ACPICA Core Subsystem:
2863 Enhanced the sleep/wake interfaces to optionally execute the _GTS method
2864 (Going To Sleep) and the _BFS method (Back From Sleep). Windows
2866 does not execute these methods, and therefore these methods are often
2867 untested. It has been seen on some systems where the execution of these
2868 methods causes errors and also prevents the machine from entering S5. It
2870 therefore suggested that host operating systems do not execute these
2872 by default. In the future, perhaps these methods can be optionally
2874 based on the age of the system and/or what is the newest version of
2876 that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState
2878 AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin
2881 Fixed a problem where the length of the local/common FADT was set too
2883 The local FADT table length cannot be set to the common length until the
2884 original length has been examined. There is code that checks the table
2886 and sets various fields appropriately. This can affect older machines
2888 early FADT versions. For example, this can cause inadvertent writes to
2890 CST_CNT register. Julian Anastasov.
2892 Fixed a mapping issue related to a physical table override. Use the
2894 mapping mechanism for tables loaded via the physical override OSL
2896 This allows for early mapping before the virtual memory manager is
2898 Thomas Renninger, Bob Moore.
2900 Enhanced the automatic return-object repair code: Repair a common problem
2902 predefined methods that are defined to return a variable-length Package
2904 sub-objects. If there is only one sub-object, some BIOS ASL code
2906 simply returns the single object instead of a Package with one sub-
2908 This new support will repair this error by wrapping a Package object
2910 the original object, creating the correct and expected Package with one
2912 object. Names that can be repaired in this manner include: _ALR, _CSD,
2914 _MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ
2917 Changed the exception code returned for invalid ACPI paths passed as
2918 parameters to external interfaces such as AcpiEvaluateObject. Was
2919 AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME.
2921 Example Code and Data Size: These are the sizes for the OS-independent
2922 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2924 version of the code includes the debug output trace mechanism and has a
2926 larger code and data size.
2929 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
2930 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
2932 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
2933 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
2936 2) iASL Compiler/Disassembler and Tools:
2938 iASL: Added the infrastructure and initial implementation of a integrated
2940 like preprocessor. This will simplify BIOS development process by
2942 the need for a separate preprocessing step during builds. On Windows, it
2944 eliminates the need to install a separate C compiler. ACPICA BZ 761. Some
2945 features including full #define() macro support are still under
2947 These preprocessor directives are supported:
2960 In addition, these new command line options are supported:
2961 -D <symbol> Define symbol for preprocessor use
2962 -li Create preprocessed output file (*.i)
2963 -P Preprocess only and create preprocessor output file (*.i)
2965 Table Compiler: Fixed a problem where the equals operator within an
2967 did not work properly.
2969 Updated iASL to use the current versions of Bison/Flex. Updated the
2971 project file to invoke these tools from the standard location. ACPICA BZ
2974 Flex for Windows: V2.5.4
2975 Bison for Windows: V2.4.1
2977 ----------------------------------------
2978 15 February 2012. Summary of changes for version 20120215:
2981 1) ACPICA Core Subsystem:
2983 There have been some major changes to the sleep/wake support code, as
2984 described below (a - e).
2986 a) The AcpiLeaveSleepState has been split into two interfaces, similar to
2987 AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is
2988 AcpiLeaveSleepStatePrep. This allows the host to perform actions between
2990 time the _BFS method is called and the _WAK method is called. NOTE: all
2992 must update their wake/resume code or else sleep/wake will not work
2996 b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the
2998 method. Some machines require that the GPEs are enabled before the _WAK
3000 is executed. Thomas Renninger.
3002 c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status)
3004 Some BIOS code assumes that WAK_STS will be cleared on resume and use it
3006 determine whether the system is rebooting or resuming. Matthew Garrett.
3008 d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From
3010 match the ACPI specification requirement. Rafael Wysocki.
3012 e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl
3013 registers within the V5 FADT. This support adds two new files:
3014 hardware/hwesleep.c implements the support for the new registers. Moved
3016 sleep/wake external interfaces to hardware/hwxfsleep.c.
3019 Added a new OSL interface for ACPI table overrides,
3020 AcpiOsPhysicalTableOverride. This interface allows the host to override a
3021 table via a physical address, instead of the logical address required by
3022 AcpiOsTableOverride. This simplifies the host implementation. Initial
3023 implementation by Thomas Renninger. The ACPICA implementation creates a
3025 shared function for table overrides that attempts both a logical and a
3028 Expanded the OSL memory read/write interfaces to 64-bit data
3029 (AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory
3030 transfer support for GAS register structures passed to AcpiRead and
3033 Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a
3035 build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC)
3037 See the ACPICA reference for details. ACPICA BZ 942. This option removes
3039 10% of the code and 5% of the static data, and the following hardware
3041 features become unavailable:
3042 PM Event and Control registers
3043 SCI interrupt (and handler)
3045 General Purpose Events (GPEs)
3048 FACS table (Waking vectors and Global Lock)
3050 Updated the unix tarball directory structure to match the ACPICA git
3052 tree. This ensures that the generic unix makefiles work properly (in
3053 generate/unix). Also updated the Linux makefiles to match. ACPICA BZ
3056 Updated the return value of the _REV predefined method to integer value 5
3058 reflect ACPI 5.0 support.
3060 Moved the external ACPI PM timer interface prototypes to the public
3062 file where they belong.
3064 Example Code and Data Size: These are the sizes for the OS-independent
3065 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3067 version of the code includes the debug output trace mechanism and has a
3069 larger code and data size.
3072 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
3073 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
3075 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
3076 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
3079 2) iASL Compiler/Disassembler and Tools:
3081 Disassembler: Fixed a problem with the new ACPI 5.0 serial resource
3082 descriptors (I2C, SPI, UART) where the resource produce/consumer bit was
3083 incorrectly displayed.
3085 AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI
3088 ----------------------------------------
3089 11 January 2012. Summary of changes for version 20120111:
3092 1) ACPICA Core Subsystem:
3094 Implemented a new mechanism to allow host device drivers to check for
3096 range conflicts with ACPI Operation Regions. Both SystemMemory and
3098 address spaces are supported. A new external interface,
3099 AcpiCheckAddressRange,
3100 allows drivers to check an address range against the ACPI namespace. See
3102 ACPICA reference for additional details. Adds one new file,
3103 utilities/utaddress.c. Lin Ming, Bob Moore.
3105 Fixed several issues with the ACPI 5.0 FADT support: Add the sleep
3108 Status registers, update the ACPI 5.0 flags, and update internal data
3109 structures to handle an FADT larger than 256 bytes. The size of the ACPI
3113 Updated all ACPICA copyrights and signons to 2012. Added the 2012
3115 all module headers and signons, including the standard Linux header. This
3116 affects virtually every file in the ACPICA core subsystem, iASL compiler,
3118 all ACPICA utilities.
3120 Example Code and Data Size: These are the sizes for the OS-independent
3121 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3123 version of the code includes the debug output trace mechanism and has a
3125 larger code and data size.
3128 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
3129 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
3131 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
3132 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
3135 2) iASL Compiler/Disassembler and Tools:
3137 Disassembler: fixed a problem with the automatic resource tag generation
3138 support. Fixes a problem where the resource tags are inadvertently not
3139 constructed if the table being disassembled contains external references
3141 control methods. Moved the actual construction of the tags to after the
3143 namespace is constructed (after 2nd parse is invoked due to external
3145 method references.) ACPICA BZ 941.
3147 Table Compiler: Make all "generic" operators caseless. These are the
3149 like UINT8, String, etc. Making these caseless improves ease-of-use.
3153 ----------------------------------------
3154 23 November 2011. Summary of changes for version 20111123:
3156 0) ACPI 5.0 Support:
3158 This release contains full support for the ACPI 5.0 specification, as
3161 Reduced Hardware Support:
3162 -------------------------
3164 This support allows for ACPI systems without the usual ACPI hardware.
3166 support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA
3168 not attempt to initialize or use any of the usual ACPI hardware. Note,
3170 this flag is set, all of the following ACPI hardware is assumed to be not
3171 present and is not initialized or accessed:
3173 General Purpose Events (GPEs)
3174 Fixed Events (PM1a/PM1b and PM Control)
3175 Power Management Timer and Console Buttons (power/sleep)
3176 Real-time Clock Alarm
3178 System Control Interrupt (SCI)
3179 The FACS is assumed to be non-existent
3184 All new tables and updates to existing tables are fully supported in the
3185 ACPICA headers (for use by device drivers), the disassembler, and the
3187 Data Table Compiler. ACPI 5.0 defines these new tables:
3189 BGRT /* Boot Graphics Resource Table */
3190 DRTM /* Dynamic Root of Trust for Measurement table */
3191 FPDT /* Firmware Performance Data Table */
3192 GTDT /* Generic Timer Description Table */
3193 MPST /* Memory Power State Table */
3194 PCCT /* Platform Communications Channel Table */
3195 PMTT /* Platform Memory Topology Table */
3196 RASF /* RAS Feature table */
3198 Operation Regions/SpaceIDs:
3199 ---------------------------
3201 All new operation regions are fully supported by the iASL compiler, the
3202 disassembler, and the ACPICA runtime code (for dispatch to region
3204 The new operation region Space IDs are:
3209 Resource Descriptors:
3210 ---------------------
3212 All new ASL resource descriptors are fully supported by the iASL
3215 ASL/AML disassembler, and the ACPICA runtime Resource Manager code
3217 all new predefined resource tags). New descriptors are:
3226 ASL/AML Operators, New and Modified:
3227 ------------------------------------
3229 One new operator is added, the Connection operator, which is used to
3231 a GeneralPurposeIo or GenericSerialBus resource descriptor with
3233 field objects within an operation region. Several new protocols are
3235 with the AccessAs operator. All are fully supported by the iASL compiler,
3236 disassembler, and runtime ACPICA AML interpreter:
3238 Connection // Declare Field Connection
3240 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol
3241 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes
3243 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol
3244 RawDataBuffer // Data type for Vendor Data
3247 Predefined ASL/AML Objects:
3248 ---------------------------
3250 All new predefined objects/control-methods are supported by the iASL
3252 and the ACPICA runtime validation/repair (arguments and return values.)
3254 predefined names include the following:
3256 Standard Predefined Names (Objects or Control Methods):
3257 _AEI, _CLS, _CPC, _CWS, _DEP,
3258 _DLM, _EVT, _GCP, _CRT, _GWS,
3259 _HRV, _PRE, _PSE, _SRT, _SUB.
3261 Resource Tags (Names used to access individual fields within resource
3263 _DBT, _DPL, _DRS, _END, _FLC,
3264 _IOR, _LIN, _MOD, _PAR, _PHA,
3265 _PIN, _PPI, _POL, _RXL, _SLV,
3266 _SPE, _STB, _TXL, _VEN.
3268 ACPICA External Interfaces:
3269 ---------------------------
3271 Several new interfaces have been defined for use by ACPI-related device
3272 drivers and other host OS services:
3274 AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS
3276 acquire and release AML mutexes that are defined in the DSDT/SSDT tables
3277 provided by the BIOS. They are intended to be used in conjunction with
3279 ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level
3280 mutual exclusion with the AML code/interpreter.
3282 AcpiGetEventResources: Returns the (formatted) resource descriptors as
3284 by the ACPI 5.0 _AEI object (ACPI Event Information). This object
3286 resource descriptors associated with hardware-reduced platform events,
3288 to the AcpiGetCurrentResources interface.
3290 Operation Region Handlers: For General Purpose IO and Generic Serial Bus
3291 operation regions, information about the Connection() object and any
3293 length information is passed to the region handler within the Context
3296 AcpiBufferToResource: This interface converts a raw AML buffer containing
3298 resource template or resource descriptor to the ACPI_RESOURCE internal
3300 suitable for use by device drivers. Can be used by an operation region
3302 to convert the Connection() buffer object into a ACPI_RESOURCE.
3304 Miscellaneous/Tools/TestSuites:
3305 -------------------------------
3307 Support for extended _HID names (Four alpha characters instead of three).
3308 Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities.
3309 Support for ACPI 5.0 features in the ASLTS test suite.
3310 Fully updated documentation (ACPICA and iASL reference documents.)
3312 ACPI Table Definition Language:
3313 -------------------------------
3315 Support for this language was implemented and released as a subsystem of
3317 iASL compiler in 2010. (See the iASL compiler User Guide.)
3320 Non-ACPI 5.0 changes for this release:
3321 --------------------------------------
3323 1) ACPICA Core Subsystem:
3325 Fix a problem with operation region declarations where a failure can
3328 the region name and an argument that evaluates to an object (such as the
3329 region address) are in different namespace scopes. Lin Ming, ACPICA BZ
3332 Do not abort an ACPI table load if an invalid space ID is found within.
3334 will be caught later if the offending method is executed. ACPICA BZ 925.
3336 Fixed an issue with the FFixedHW space ID where the ID was not always
3337 recognized properly (Both ACPICA and iASL). ACPICA BZ 926.
3339 Fixed a problem with the 32-bit generation of the unix-specific OSL
3340 (osunixxf.c). Lin Ming, ACPICA BZ 936.
3342 Several changes made to enable generation with the GCC 4.6 compiler.
3346 New error messages: Unsupported I/O requests (not 8/16/32 bit), and
3348 field registers out-of-range.
3350 2) iASL Compiler/Disassembler and Tools:
3352 iASL: Implemented the __PATH__ operator, which returns the full pathname
3354 the current source file.
3356 AcpiHelp: Automatically display expanded keyword information for all ASL
3359 Debugger: Add "Template" command to disassemble/dump resource template
3362 Added a new master script to generate and execute the ASLTS test suite.
3363 Automatically handles 32- and 64-bit generation. See tests/aslts.sh
3365 iASL: Fix problem with listing generation during processing of the
3367 operator where AML listing was disabled until the entire Switch block was
3370 iASL: Improve support for semicolon statement terminators. Fix "invalid
3371 character" message for some cases when the semicolon is used. Semicolons
3373 now allowed after every <Term> grammar element. ACPICA BZ 927.
3375 iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ
3378 Disassembler: Fix problem with disassembly of the DataTableRegion
3380 where an inadvertent "Unhandled deferred opcode" message could be
3383 3) Example Code and Data Size
3385 These are the sizes for the OS-independent acpica.lib produced by the
3386 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
3387 includes the debug output trace mechanism and has a much larger code and
3392 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
3393 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
3395 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
3396 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
3398 ----------------------------------------
3399 22 September 2011. Summary of changes for version 20110922:
3403 Support for ACPI 5.0 in ACPICA has been underway for several months and
3405 be released at the same time that ACPI 5.0 is officially released.
3407 The ACPI 5.0 specification is on track for release in the next few
3410 1) ACPICA Core Subsystem:
3412 Fixed a problem where the maximum sleep time for the Sleep() operator was
3413 intended to be limited to two seconds, but was inadvertently limited to
3417 Linux and Unix makefiles: Added header file dependencies to ensure
3419 generation of ACPICA core code and utilities. Also simplified the
3421 considerably through the use of the vpath variable to specify search
3425 2) iASL Compiler/Disassembler and Tools:
3427 iASL: Implemented support to check the access length for all fields
3429 access named Resource Descriptor fields. For example, if a resource field
3431 defined to be two bits, a warning is issued if a CreateXxxxField() is
3433 with an incorrect bit length. This is implemented for all current
3435 descriptor names. ACPICA BZ 930.
3437 Disassembler: Fixed a byte ordering problem with the output of 24-bit and
3441 iASL: Fixed a couple of issues associated with variable-length package
3442 objects. 1) properly handle constants like One, Ones, Zero -- do not make
3444 VAR_PACKAGE when these are used as a package length. 2) Allow the
3446 opcode (in addition to PACKAGE) when validating object types for
3450 iASL: Emit statistics for all output files (instead of just the ASL input
3452 AML output). Includes listings, hex files, etc.
3454 iASL: Added -G option to the table compiler to allow the compilation of
3456 ACPI tables. The only part of a table that is required is the standard
3461 AcpiXtract: Ported to the standard ACPICA environment (with ACPICA
3463 which also adds correct 64-bit support. Also, now all output filenames
3465 completely lower case.
3467 AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when
3468 loading table files. A warning is issued for any such tables. The only
3469 exception is an FADT. This also fixes a possible fault when attempting to
3471 non-AML tables. ACPICA BZ 932.
3473 AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where
3475 missing table terminator could cause a fault when using the -p option.
3477 AcpiSrc: Fixed a possible divide-by-zero fault when generating file
3480 3) Example Code and Data Size
3482 These are the sizes for the OS-independent acpica.lib produced by the
3483 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
3484 includes the debug output trace mechanism and has a much larger code and
3488 Previous Release (VC 9.0):
3489 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
3490 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
3491 Current Release (VC 9.0):
3492 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
3493 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
3496 ----------------------------------------
3497 23 June 2011. Summary of changes for version 20110623:
3499 1) ACPI CA Core Subsystem:
3501 Updated the predefined name repair mechanism to not attempt repair of a
3503 return object if a _PSS object is present. We can only sort the _TSS
3505 package if there is no _PSS within the same scope. This is because if
3508 present, the ACPI specification dictates that the _TSS Power Dissipation
3510 is to be ignored, and therefore some BIOSs leave garbage values in the
3512 Power field(s). In this case, it is best to just return the _TSS package
3514 is. Reported by, and fixed with assistance from Fenghua Yu.
3516 Added an option to globally disable the control method return value
3518 and repair. This runtime option can be used to disable return value
3521 this is causing a problem on a particular machine. Also added an option
3523 AcpiExec (-dr) to set this disable flag.
3525 All makefiles and project files: Major changes to improve generation of
3527 tools. ACPICA BZ 912:
3528 Reduce default optimization levels to improve compatibility
3529 For Linux, add strict-aliasing=0 for gcc 4
3530 Cleanup and simplify use of command line defines
3531 Cleanup multithread library support
3532 Improve usage messages
3534 Linux-specific header: update handling of THREAD_ID and pthread. For the
3536 bit case, improve casting to eliminate possible warnings, especially with
3540 Example Code and Data Size: These are the sizes for the OS-independent
3541 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3543 version of the code includes the debug output trace mechanism and has a
3545 larger code and data size.
3547 Previous Release (VC 9.0):
3548 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
3549 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
3550 Current Release (VC 9.0):
3551 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
3552 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
3554 2) iASL Compiler/Disassembler and Tools:
3556 With this release, a new utility named "acpihelp" has been added to the
3558 package. This utility summarizes the ACPI specification chapters for the
3560 and AML languages. It generates under Linux/Unix as well as Windows, and
3561 provides the following functionality:
3562 Find/display ASL operator(s) -- with description and syntax.
3563 Find/display ASL keyword(s) -- with exact spelling and descriptions.
3564 Find/display ACPI predefined name(s) -- with description, number
3565 of arguments, and the return value data type.
3566 Find/display AML opcode name(s) -- with opcode, arguments, and
3568 Decode/display AML opcode -- with opcode name, arguments, and
3571 Service Layers: Make multi-thread support configurable. Conditionally
3573 the multi-thread support so that threading libraries will not be linked
3576 necessary. The only tool that requires multi-thread support is AcpiExec.
3578 iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions
3580 Bison appear to want the interface to yyerror to be a const char * (or at
3581 least this is a problem when generating iASL on some systems.) ACPICA BZ
3585 Tools: Fix for systems where O_BINARY is not defined. Only used for
3587 versions of the tools.
3589 ----------------------------------------
3590 27 May 2011. Summary of changes for version 20110527:
3592 1) ACPI CA Core Subsystem:
3594 ASL Load() operator: Reinstate most restrictions on the incoming ACPI
3596 signature. Now, only allow SSDT, OEMx, and a null signature. History:
3597 1) Originally, we checked the table signature for "SSDT" or "PSDT".
3598 (PSDT is now obsolete.)
3599 2) We added support for OEMx tables, signature "OEM" plus a fourth
3600 "don't care" character.
3601 3) Valid tables were encountered with a null signature, so we just
3602 gave up on validating the signature, (05/2008).
3603 4) We encountered non-AML tables such as the MADT, which caused
3604 interpreter errors and kernel faults. So now, we once again allow
3605 only SSDT, OEMx, and now, also a null signature. (05/2011).
3607 Added the missing _TDL predefined name to the global name list in order
3609 enable validation. Affects both the core ACPICA code and the iASL
3612 Example Code and Data Size: These are the sizes for the OS-independent
3613 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3615 version of the code includes the debug output trace mechanism and has a
3617 larger code and data size.
3619 Previous Release (VC 9.0):
3620 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
3621 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
3622 Current Release (VC 9.0):
3623 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
3624 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
3626 2) iASL Compiler/Disassembler and Tools:
3628 Debugger/AcpiExec: Implemented support for "complex" method arguments on
3630 debugger command line. This adds support beyond simple integers --
3632 Strings, Buffers, and Packages. Includes support for nested packages.
3633 Increased the default command line buffer size to accommodate these
3635 See the ACPICA reference for details and syntax. ACPICA BZ 917.
3637 Debugger/AcpiExec: Implemented support for "default" method arguments for
3639 Execute/Debug command. Now, the debugger will always invoke a control
3641 with the required number of arguments -- even if the command line
3643 none or insufficient arguments. It uses default integer values for any
3645 arguments. Also fixes a bug where only six method arguments maximum were
3646 supported instead of the required seven.
3648 Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine
3650 also return status in order to prevent buffer overruns. See the ACPICA
3651 reference for details and syntax. ACPICA BZ 921
3653 iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and
3654 makefiles to simplify support for the two different but similar parser
3655 generators, bison and yacc.
3657 Updated the generic unix makefile for gcc 4. The default gcc version is
3659 expected to be 4 or greater, since options specific to gcc 4 are used.
3661 ----------------------------------------
3662 13 April 2011. Summary of changes for version 20110413:
3664 1) ACPI CA Core Subsystem:
3666 Implemented support to execute a so-called "orphan" _REG method under the
3668 device. This change will force the execution of a _REG method underneath
3671 device even if there is no corresponding operation region of type
3672 EmbeddedControl. Fixes a problem seen on some machines and apparently is
3673 compatible with Windows behavior. ACPICA BZ 875.
3675 Added more predefined methods that are eligible for automatic NULL
3677 element removal. This change adds another group of predefined names to
3680 of names that can be repaired by having NULL package elements dynamically
3681 removed. This group are those methods that return a single variable-
3683 package containing simple data types such as integers, buffers, strings.
3685 includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx,
3688 and _TZD. ACPICA BZ 914.
3690 Split and segregated all internal global lock functions to a new file,
3693 Updated internal address SpaceID for DataTable regions. Moved this
3696 id in preparation for ACPI 5.0 changes that will include some new space
3699 change should not affect user/host code.
3701 Example Code and Data Size: These are the sizes for the OS-independent
3703 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
3705 the code includes the debug output trace mechanism and has a much larger
3710 Previous Release (VC 9.0):
3711 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
3712 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
3713 Current Release (VC 9.0):
3714 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
3715 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
3717 2) iASL Compiler/Disassembler and Tools:
3719 iASL/DTC: Major update for new grammar features. Allow generic data types
3721 custom ACPI tables. Field names are now optional. Any line can be split
3723 multiple lines using the continuation char (\). Large buffers now use
3725 continuation character(s) and no colon on the continuation lines. See the
3727 update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob
3730 iASL: Mark ASL "Return()" and the simple "Return" as "Null" return
3732 Since the parser stuffs a "zero" as the return value for these statements
3735 the underlying AML grammar), they were seen as "return with value" by the
3737 semantic checking. They are now seen correctly as "null" return
3740 iASL: Check if a_REG declaration has a corresponding Operation Region.
3742 check for each _REG to ensure that there is in fact a corresponding
3744 region declaration in the same scope. If not, the _REG method is not very
3746 since it probably won't be executed. ACPICA BZ 915.
3748 iASL/DTC: Finish support for expression evaluation. Added a new
3751 that implements c-style operator precedence and parenthesization. ACPICA
3755 Disassembler/DTC: Remove support for () and <> style comments in data
3758 that DTC has full expression support, we don't want to have comment
3761 start with a parentheses or a less-than symbol. Now, only the standard /*
3764 comments are supported, as well as the bracket [] comments.
3766 AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have
3768 headers in the acpidump file. Update the header validation to support
3770 tables. Problem introduced in previous AcpiXtract version in the change
3772 support "wrong checksum" error messages emitted by acpidump utility.
3774 iASL: Add a * option to generate all template files (as a synonym for
3778 "iasl -T *" or "iasl -T ALL".
3780 iASL/DTC: Do not abort compiler on fatal errors. We do not want to
3782 abort the compiler on "fatal" errors, simply should abort the current
3784 This allows multiple compiles with a single (possibly wildcard) compiler
3787 ----------------------------------------
3788 16 March 2011. Summary of changes for version 20110316:
3790 1) ACPI CA Core Subsystem:
3792 Fixed a problem caused by a _PRW method appearing at the namespace root
3794 during the setup of wake GPEs. A fault could occur if a _PRW directly
3797 root object was passed to the AcpiSetupGpeForWake interface. Lin Ming.
3799 Implemented support for "spurious" Global Lock interrupts. On some
3801 global lock interrupt can occur without the pending flag being set. Upon
3804 interrupt, we now ensure that a thread is actually waiting for the lock
3806 signaling GL availability. Rafael Wysocki, Bob Moore.
3808 Example Code and Data Size: These are the sizes for the OS-independent
3810 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
3812 the code includes the debug output trace mechanism and has a much larger
3817 Previous Release (VC 9.0):
3818 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
3819 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
3820 Current Release (VC 9.0):
3821 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
3822 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
3824 2) iASL Compiler/Disassembler and Tools:
3826 Implemented full support for the "SLIC" ACPI table. Includes support in
3828 header files, disassembler, table compiler, and template generator. Bob
3832 AcpiXtract: Correctly handle embedded comments and messages from
3834 Apparently some or all versions of acpidump will occasionally emit a
3837 "Wrong checksum", etc., into the dump file. This was causing problems for
3838 AcpiXtract. ACPICA BZ 905.
3840 iASL: Fix the Linux makefile by removing an inadvertent double file
3844 AcpiExec: Update installation of operation region handlers. Install one
3846 for a user-defined address space. This is used by the ASL test suite
3849 ----------------------------------------
3850 11 February 2011. Summary of changes for version 20110211:
3852 1) ACPI CA Core Subsystem:
3854 Added a mechanism to defer _REG methods for some early-installed
3856 Most user handlers should be installed before call to
3857 AcpiEnableSubsystem.
3858 However, Event handlers and region handlers should be installed after
3859 AcpiInitializeObjects. Override handlers for the "default" regions should
3861 installed early, however. This change executes all _REG methods for the
3862 default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any
3863 chicken/egg issues between them. ACPICA BZ 848.
3865 Implemented an optimization for GPE detection. This optimization will
3867 ignore GPE registers that contain no enabled GPEs -- there is no need to
3868 read the register since this information is available internally. This
3869 becomes more important on machines with a large GPE space. ACPICA
3871 884. Lin Ming. Suggestion from Joe Liu.
3873 Removed all use of the highly unreliable FADT revision field. The
3875 number in the FADT has been found to be completely unreliable and cannot
3877 trusted. Only the actual table length can be used to infer the version.
3879 change updates the ACPICA core and the disassembler so that both no
3881 even look at the FADT version and instead depend solely upon the FADT
3884 Fix an unresolved name issue for the no-debug and no-error-message source
3885 generation cases. The _AcpiModuleName was left undefined in these cases,
3887 it is actually needed as a parameter to some interfaces. Define
3888 _AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888.
3890 Split several large files (makefiles and project files updated)
3891 utglobal.c -> utdecode.c
3892 dbcomds.c -> dbmethod.c dbnames.c
3893 dsopcode.c -> dsargs.c dscontrol.c
3894 dsload.c -> dsload2.c
3895 aslanalyze.c -> aslbtypes.c aslwalks.c
3897 Example Code and Data Size: These are the sizes for the OS-independent
3898 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3899 debug version of the code includes the debug output trace mechanism and
3901 a much larger code and data size.
3903 Previous Release (VC 9.0):
3904 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
3905 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
3906 Current Release (VC 9.0):
3907 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
3908 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
3910 2) iASL Compiler/Disassembler and Tools:
3912 iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__.
3913 These are useful C-style macros with the standard definitions. ACPICA
3916 iASL/DTC: Added support for integer expressions and labels. Support for
3918 expressions for all integer fields in all ACPI tables. Support for labels
3920 "generic" portions of tables such as UEFI. See the iASL reference manual.
3922 Debugger: Added a command to display the status of global handlers. The
3923 "handlers" command will display op region, fixed event, and miscellaneous
3924 global handlers. installation status -- and for op regions, whether
3926 or user-installed handler will be used.
3928 iASL: Warn if reserved method incorrectly returns a value. Many
3930 names are defined such that they do not return a value. If implemented as
3932 method, issue a warning if such a name explicitly returns a value. ACPICA
3935 iASL: Added detection of GPE method name conflicts. Detects a conflict
3937 there are two GPE methods of the form _Lxy and _Exy in the same scope.
3939 example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848.
3941 iASL/DTC: Fixed a couple input scanner issues with comments and line
3942 numbers. Comment remover could get confused and miss a comment ending.
3944 a problem with line counter maintenance.
3946 iASL/DTC: Reduced the severity of some errors from fatal to error. There
3948 no need to abort on simple errors within a field definition.
3950 Debugger: Simplified the output of the help command. All help output now
3952 a single screen, instead of help subcommands. ACPICA Bugzilla 897.
3954 ----------------------------------------
3955 12 January 2011. Summary of changes for version 20110112:
3957 1) ACPI CA Core Subsystem:
3959 Fixed a race condition between method execution and namespace walks that
3961 possibly cause a fault. The problem was apparently introduced in version
3962 20100528 as a result of a performance optimization that reduces the
3965 namespace walks upon method exit by using the delete_namespace_subtree
3966 function instead of the delete_namespace_by_owner function used
3968 Bug is a missing namespace lock in the delete_namespace_subtree function.
3969 dana.myers@oracle.com
3971 Fixed several issues and a possible fault with the automatic "serialized"
3972 method support. History: This support changes a method to "serialized" on
3974 fly if the method generates an AE_ALREADY_EXISTS error, indicating the
3975 possibility that it cannot handle reentrancy. This fix repairs a couple
3977 issues seen in the field, especially on machines with many cores:
3979 1) Delete method children only upon the exit of the last thread,
3980 so as to not delete objects out from under other running threads
3981 (and possibly causing a fault.)
3982 2) Set the "serialized" bit for the method only upon the exit of the
3983 Last thread, so as to not cause deadlock when running threads
3985 3) Cleanup the use of the AML "MethodFlags" and internal method flags
3986 so that there is no longer any confusion between the two.
3988 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com.
3990 Debugger: Now lock the namespace for duration of a namespace dump.
3992 issues if the namespace is changing dynamically underneath the debugger.
3993 Especially affects temporary namespace nodes, since the debugger displays
3996 Updated the ordering of include files. The ACPICA headers should appear
3997 before any compiler-specific headers (stdio.h, etc.) so that acenv.h can
3999 any necessary compiler-specific defines, etc. Affects the ACPI-related
4003 Updated all ACPICA copyrights and signons to 2011. Added the 2011
4005 to all module headers and signons, including the Linux header. This
4007 virtually every file in the ACPICA core subsystem, iASL compiler, and all
4010 Added project files for MS Visual Studio 2008 (VC++ 9.0). The original
4011 project files for VC++ 6.0 are now obsolete. New project files can be
4013 under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for
4016 Example Code and Data Size: These are the sizes for the OS-independent
4017 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
4018 debug version of the code includes the debug output trace mechanism and
4020 much larger code and data size.
4022 Previous Release (VC 6.0):
4023 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
4024 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
4025 Current Release (VC 9.0):
4026 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
4027 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
4029 2) iASL Compiler/Disassembler and Tools:
4031 iASL: Added generic data types to the Data Table compiler. Add "generic"
4033 types such as UINT32, String, Unicode, etc., to simplify the generation
4035 platform-defined tables such as UEFI. Lin Ming.
4037 iASL: Added listing support for the Data Table Compiler. Adds listing
4039 (-l) to display actual binary output for each line of input code.
4041 ----------------------------------------
4042 09 December 2010. Summary of changes for version 20101209:
4044 1) ACPI CA Core Subsystem:
4046 Completed the major overhaul of the GPE support code that was begun in
4048 2010. Major features include: removal of _PRW execution in ACPICA (host
4049 executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing,
4050 changes to existing interfaces, simplification of GPE handler operation,
4052 a handful of new interfaces:
4058 One new file, evxfgpe.c to consolidate all external GPE interfaces.
4060 See the ACPICA Programmer Reference for full details and programming
4061 information. See the new section 4.4 "General Purpose Event (GPE)
4063 for a full overview, and section 8.7 "ACPI General Purpose Event
4065 for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin
4067 Bob Moore, Rafael Wysocki.
4069 Implemented a new GPE feature for Windows compatibility, the "Implicit
4071 GPE Notify". This feature will automatically issue a Notify(2) on a
4073 when a Wake GPE is received if there is no corresponding GPE method or
4074 handler. ACPICA BZ 870.
4076 Fixed a problem with the Scope() operator during table parse and load
4078 During load phase (table load or method execution), the scope operator
4080 not enter the target into the namespace. Instead, it should open a new
4082 at the target location. Linux BZ 19462, ACPICA BZ 882.
4084 Example Code and Data Size: These are the sizes for the OS-independent
4085 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4086 debug version of the code includes the debug output trace mechanism and
4088 much larger code and data size.
4091 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
4092 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
4094 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
4095 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
4097 2) iASL Compiler/Disassembler and Tools:
4099 iASL: Relax the alphanumeric restriction on _CID strings. These strings
4101 "bus-specific" per the ACPI specification, and therefore any characters
4103 acceptable. The only checks that can be performed are for a null string
4105 perhaps for a leading asterisk. ACPICA BZ 886.
4107 iASL: Fixed a problem where a syntax error that caused a premature EOF
4108 condition on the source file emitted a very confusing error message. The
4109 premature EOF is now detected correctly. ACPICA BZ 891.
4111 Disassembler: Decode the AccessSize within a Generic Address Structure
4113 access, word access, etc.) Note, this field does not allow arbitrary bit
4114 access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword.
4116 New: AcpiNames utility - Example namespace dump utility. Shows an example
4118 ACPICA configuration for a minimal namespace dump utility. Uses table and
4119 namespace managers, but no AML interpreter. Does not add any
4121 over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to
4122 partition and configure ACPICA. ACPICA BZ 883.
4124 AML Debugger: Increased the debugger buffer size for method return
4126 Was 4K, increased to 16K. Also enhanced error messages for debugger
4128 execution, including the buffer overflow case.
4130 ----------------------------------------
4131 13 October 2010. Summary of changes for version 20101013:
4133 1) ACPI CA Core Subsystem:
4135 Added support to clear the PCIEXP_WAKE event. When clearing ACPI events,
4137 clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via
4138 HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880.
4140 Changed the type of the predefined namespace object _TZ from ThermalZone
4142 Device. This was found to be confusing to the host software that
4144 the various thermal zones, since _TZ is not really a ThermalZone.
4147 Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui
4150 Added Windows Vista SP2 to the list of supported _OSI strings. The actual
4151 string is "Windows 2006 SP2".
4153 Eliminated duplicate code in AcpiUtExecute* functions. Now that the
4155 code automatically repairs _HID-related strings, this type of code is no
4156 longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ
4159 Example Code and Data Size: These are the sizes for the OS-independent
4160 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4161 debug version of the code includes the debug output trace mechanism and
4163 much larger code and data size.
4166 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
4167 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
4169 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
4170 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
4172 2) iASL Compiler/Disassembler and Tools:
4174 iASL: Implemented additional compile-time validation for _HID strings.
4176 non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the
4179 the string must be exactly seven or eight characters. For both _HID and
4181 strings, all characters must be alphanumeric. ACPICA BZ 874.
4183 iASL: Allow certain "null" resource descriptors. Some BIOS code creates
4184 descriptors that are mostly or all zeros, with the expectation that they
4186 be filled in at runtime. iASL now allows this as long as there is a
4188 tag" (name) associated with the descriptor, which gives the ASL a handle
4189 needed to modify the descriptor. ACPICA BZ 873.
4191 Added single-thread support to the generic Unix application OSL.
4193 for iASL support, this change removes the use of semaphores in the
4195 threaded ACPICA tools/applications - increasing performance. The
4196 _MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED
4197 option. ACPICA BZ 879.
4199 AcpiExec: several fixes for the 64-bit version. Adds XSDT support and
4201 for 64-bit DSDT/FACS addresses in the FADT. Lin Ming.
4203 iASL: Moved all compiler messages to a new file, aslmessages.h.
4205 ----------------------------------------
4206 15 September 2010. Summary of changes for version 20100915:
4208 1) ACPI CA Core Subsystem:
4210 Removed the AcpiOsDerivePciId OSL interface. The various host
4212 of this function were not OS-dependent and are now obsolete and can be
4213 removed from all host OSLs. This function has been replaced by
4214 AcpiHwDerivePciId, which is now part of the ACPICA core code.
4215 AcpiHwDerivePciId has been implemented without recursion. Adds one new
4216 module, hwpci.c. ACPICA BZ 857.
4218 Implemented a dynamic repair for _HID and _CID strings. The following
4219 problems are now repaired at runtime: 1) Remove a leading asterisk in the
4220 string, and 2) the entire string is uppercased. Both repairs are in
4221 accordance with the ACPI specification and will simplify host driver
4225 The ACPI_THREAD_ID type is no longer configurable, internally it is now
4226 always UINT64. This simplifies the ACPICA code, especially any printf
4228 UINT64 is the only common data type for all thread_id types across all
4229 operating systems. It is now up to the host OSL to cast the native
4231 type to UINT64 before returning the value to ACPICA (via
4233 Lin Ming, Bob Moore.
4235 Added the ACPI_INLINE type to enhance the ACPICA configuration. The
4237 keyword is not standard across compilers, and this type allows inline to
4239 configured on a per-compiler basis. Lin Ming.
4241 Made the system global AcpiGbl_SystemAwakeAndRunning publically
4243 Added an extern for this boolean in acpixf.h. Some hosts utilize this
4245 during suspend/restore operations. ACPICA BZ 869.
4247 All code that implements error/warning messages with the "ACPI:" prefix
4249 been moved to a new module, utxferror.c.
4251 The UINT64_OVERLAY was moved to utmath.c, which is the only module where
4253 is used. ACPICA BZ 829. Lin Ming, Bob Moore.
4255 Example Code and Data Size: These are the sizes for the OS-independent
4256 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4257 debug version of the code includes the debug output trace mechanism and
4259 much larger code and data size.
4262 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
4263 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
4265 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
4266 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
4268 2) iASL Compiler/Disassembler and Tools:
4270 iASL/Disassembler: Write ACPI errors to stderr instead of the output
4272 This keeps the output files free of random error messages that may
4274 from within the namespace/interpreter code. Used this opportunity to
4276 all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ
4277 866. Lin Ming, Bob Moore.
4279 Tools: update some printfs for ansi warnings on size_t. Handle width
4281 of size_t on 32-bit versus 64-bit generations. Lin Ming.
4283 ----------------------------------------
4284 06 August 2010. Summary of changes for version 20100806:
4286 1) ACPI CA Core Subsystem:
4288 Designed and implemented a new host interface to the _OSI support code.
4290 will allow the host to dynamically add or remove multiple _OSI strings,
4292 well as install an optional handler that is called for each _OSI
4294 Also added a new AML debugger command, 'osi' to display and modify the
4296 _OSI string table, and test support in the AcpiExec utility. See the
4298 reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836.
4300 AcpiInstallInterface - Add an _OSI string.
4301 AcpiRemoveInterface - Delete an _OSI string.
4302 AcpiInstallInterfaceHandler - Install optional _OSI handler.
4304 AcpiOsValidateInterface - no longer used.
4306 source/components/utilities/utosi.c
4308 Re-introduced the support to enable multi-byte transfers for Embedded
4309 Controller (EC) operation regions. A reported problem was found to be a
4311 in the host OS, not in the multi-byte support. Previously, the maximum
4313 size passed to the EC operation region handler was a single byte. There
4315 often EC Fields larger than one byte that need to be transferred, and it
4317 useful for the EC driver to lock these as a single transaction. This
4319 enables single transfers larger than 8 bits. This effectively changes the
4320 access to the EC space from ByteAcc to AnyAcc, and will probably require
4321 changes to the host OS Embedded Controller driver to enable 16/32/64/256-
4323 transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming.
4325 Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The
4326 prototype in acpiosxf.h had the output value pointer as a (void *).
4327 It should be a (UINT64 *). This may affect some host OSL code.
4329 Fixed a couple problems with the recently modified Linux makefiles for
4331 and AcpiExec. These new makefiles place the generated object files in the
4332 local directory so that there can be no collisions between the files that
4334 shared between them that are compiled with different options.
4336 Example Code and Data Size: These are the sizes for the OS-independent
4337 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4338 debug version of the code includes the debug output trace mechanism and
4340 much larger code and data size.
4343 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
4344 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
4346 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
4347 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
4349 2) iASL Compiler/Disassembler and Tools:
4351 iASL/Disassembler: Added a new option (-da, "disassemble all") to load
4353 namespace from and disassemble an entire group of AML files. Useful for
4354 loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn)
4356 disassembling with one simple command. ACPICA BZ 865. Lin Ming.
4358 iASL: Allow multiple invocations of -e option. This change allows
4360 uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ
4364 ----------------------------------------
4365 02 July 2010. Summary of changes for version 20100702:
4367 1) ACPI CA Core Subsystem:
4369 Implemented several updates to the recently added GPE reference count
4370 support. The model for "wake" GPEs is changing to give the host OS
4372 control of these GPEs. Eventually, the ACPICA core will not execute any
4374 methods, since the host already must execute them. Also, additional
4376 were made to help ensure that the reference counts are kept in proper
4377 synchronization with reality. Rafael J. Wysocki.
4379 1) Ensure that GPEs are not enabled twice during initialization.
4380 2) Ensure that GPE enable masks stay in sync with the reference count.
4381 3) Do not inadvertently enable GPEs when writing GPE registers.
4382 4) Remove the internal wake reference counter and add new AcpiGpeWakeup
4383 interface. This interface will set or clear individual GPEs for wakeup.
4384 5) Remove GpeType argument from AcpiEnable and AcpiDisable. These
4386 are now used for "runtime" GPEs only.
4388 Changed the behavior of the GPE install/remove handler interfaces. The
4391 no longer disabled during this process, as it was found to cause problems
4393 some machines. Rafael J. Wysocki.
4395 Reverted a change introduced in version 20100528 to enable Embedded
4396 Controller multi-byte transfers. This change was found to cause problems
4398 Index Fields and possibly Bank Fields. It will be reintroduced when these
4399 problems have been resolved.
4401 Fixed a problem with references to Alias objects within Package Objects.
4403 reference to an Alias within the definition of a Package was not always
4404 resolved properly. Aliases to objects like Processors, Thermal zones,
4406 were resolved to the actual object instead of a reference to the object
4409 should be. Package objects are only allowed to contain integer, string,
4410 buffer, package, and reference objects. Redhat bugzilla 608648.
4412 Example Code and Data Size: These are the sizes for the OS-independent
4413 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4414 debug version of the code includes the debug output trace mechanism and
4416 much larger code and data size.
4419 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
4420 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
4422 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
4423 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
4425 2) iASL Compiler/Disassembler and Tools:
4427 iASL: Implemented a new compiler subsystem to allow definition and
4428 compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc.
4430 are called "ACPI Data Tables", and the new compiler is the "Data Table
4431 Compiler". This compiler is intended to simplify the existing error-prone
4432 process of creating these tables for the BIOS, as well as allowing the
4433 disassembly, modification, recompilation, and override of existing ACPI
4435 tables. See the iASL User Guide for detailed information.
4437 iASL: Implemented a new Template Generator option in support of the new
4439 Table Compiler. This option will create examples of all known ACPI tables
4440 that can be used as the basis for table development. See the iASL
4441 documentation and the -T option.
4443 Disassembler and headers: Added support for the WDDT ACPI table (Watchdog
4446 Updated the Linux makefiles for iASL and AcpiExec to place the generated
4447 object files in the local directory so that there can be no collisions
4448 between the shared files between them that are generated with different
4451 Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec.
4453 the #define __APPLE__ to enable this support.
4455 ----------------------------------------
4456 28 May 2010. Summary of changes for version 20100528:
4458 Note: The ACPI 4.0a specification was released on April 5, 2010 and is
4459 available at www.acpi.info. This is primarily an errata release.
4461 1) ACPI CA Core Subsystem:
4463 Undefined ACPI tables: We are looking for the definitions for the
4465 ACPI tables that have been seen in the field: ATKG, IEIT, GSCI.
4467 Implemented support to enable multi-byte transfers for Embedded
4469 (EC) operation regions. Previously, the maximum data size passed to the
4471 operation region handler was a single byte. There are often EC Fields
4473 than one byte that need to be transferred, and it is useful for the EC
4475 to lock these as a single transaction. This change enables single
4477 larger than 8 bits. This effectively changes the access to the EC space
4479 ByteAcc to AnyAcc, and will probably require changes to the host OS
4481 Controller driver to enable 16/32/64/256-bit transfers in addition to 8-
4483 transfers. Alexey Starikovskiy, Lin Ming
4485 Implemented a performance enhancement for namespace search and access.
4487 change enhances the performance of namespace searches and walks by adding
4489 backpointer to the parent in each namespace node. On large namespaces,
4491 change can improve overall ACPI performance by up to 9X. Adding a pointer
4493 each namespace node increases the overall size of the internal namespace
4495 about 5%, since each namespace entry usually consists of both a namespace
4496 node and an ACPI operand object. However, this is the first growth of the
4497 namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy.
4499 Implemented a performance optimization that reduces the number of
4501 walks. On control method exit, only walk the namespace if the method is
4503 to have created namespace objects outside of its local scope. Previously,
4505 entire namespace was traversed on each control method exit. This change
4507 improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob
4510 Added support to truncate I/O addresses to 16 bits for Windows
4512 Some ASL code has been seen in the field that inadvertently has bits set
4513 above bit 15. This feature is optional and is enabled if the BIOS
4515 any Windows OSI strings. It can also be enabled by the host OS. Matthew
4518 Added support to limit the maximum time for the ASL Sleep() operator. To
4519 prevent accidental deep sleeps, limit the maximum time that Sleep() will
4520 actually sleep. Configurable, the default maximum is two seconds. ACPICA
4523 Added run-time validation support for the _WDG and_WED Microsoft
4525 methods. These objects are defined by "Windows Instrumentation", and are
4527 part of the ACPI spec. ACPICA BZ 860.
4529 Expanded all statistic counters used during namespace and device
4530 initialization from 16 to 32 bits in order to support very large
4533 Replaced all instances of %d in printf format specifiers with %u since
4535 all integers in ACPICA are unsigned.
4537 Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly
4541 Example Code and Data Size: These are the sizes for the OS-independent
4542 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4543 debug version of the code includes the debug output trace mechanism and
4545 much larger code and data size.
4548 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
4549 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
4551 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
4552 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
4554 2) iASL Compiler/Disassembler and Tools:
4556 iASL: Added compiler support for the _WDG and_WED Microsoft predefined
4557 methods. These objects are defined by "Windows Instrumentation", and are
4559 part of the ACPI spec. ACPICA BZ 860.
4561 AcpiExec: added option to disable the memory tracking mechanism. The -dt
4562 option will disable the tracking mechanism, which improves performance
4565 AcpiExec: Restructured the command line options into -d (disable) and -e
4568 ----------------------------------------
4569 28 April 2010. Summary of changes for version 20100428:
4571 1) ACPI CA Core Subsystem:
4573 Implemented GPE support for dynamically loaded ACPI tables. For all GPEs,
4574 including FADT-based and GPE Block Devices, execute any _PRW methods in
4576 new table, and process any _Lxx/_Exx GPE methods in the new table. Any
4577 runtime GPE that is referenced by an _Lxx/_Exx method in the new table is
4578 immediately enabled. Handles the FADT-defined GPEs as well as GPE Block
4579 Devices. Provides compatibility with other ACPI implementations. Two new
4580 files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob
4583 Fixed a regression introduced in version 20100331 within the table
4585 where initial table loading could fail. This was introduced in the fix
4587 AcpiReallocateRootTable. Also, renamed some of fields in the table
4589 data structures to clarify their meaning and use.
4591 Fixed a possible allocation overrun during internal object copy in
4592 AcpiUtCopySimpleObject. The original code did not correctly handle the
4594 where the object to be copied was a namespace node. Lin Ming. ACPICA BZ
4597 Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a
4598 possible access beyond end-of-allocation. Also, now fully validate
4600 (size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847
4602 Example Code and Data Size: These are the sizes for the OS-independent
4603 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4604 debug version of the code includes the debug output trace mechanism and
4606 much larger code and data size.
4609 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
4610 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
4612 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
4613 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
4615 2) iASL Compiler/Disassembler and Tools:
4617 iASL: Implemented Min/Max/Len/Gran validation for address resource
4618 descriptors. This change implements validation for the address fields
4620 are common to all address-type resource descriptors. These checks are
4621 implemented: Checks for valid Min/Max, length within the Min/Max window,
4622 valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as
4624 table 6-40 in the ACPI 4.0a specification. Also split the large
4626 and aslrestype2.c files into five new files. ACPICA BZ 840.
4628 iASL: Added support for the _Wxx predefined names. This support was
4630 and these names were not recognized by the compiler as valid predefined
4631 names. ACPICA BZ 851.
4633 iASL: Added an error for all predefined names that are defined to return
4635 value and thus must be implemented as Control Methods. These include all
4637 the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous
4638 names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856.
4640 iASL: Implemented the -ts option to emit hex AML data in ASL format, as
4642 ASL Buffer. Allows ACPI tables to be easily included within ASL files, to
4644 dynamically loaded via the Load() operator. Also cleaned up output for
4647 ta and -tc options. ACPICA BZ 853.
4649 Tests: Added a new file with examples of extended iASL error checking.
4650 Demonstrates the advanced error checking ability of the iASL compiler.
4651 Available at tests/misc/badcode.asl.
4653 ----------------------------------------
4654 31 March 2010. Summary of changes for version 20100331:
4656 1) ACPI CA Core Subsystem:
4658 Completed a major update for the GPE support in order to improve support
4660 shared GPEs and to simplify both host OS and ACPICA code. Added a
4662 count mechanism to support shared GPEs that require multiple device
4664 Several external interfaces have changed. One external interface has been
4665 removed. One new external interface was added. Most of the GPE external
4666 interfaces now use the GPE spinlock instead of the events mutex (and the
4667 Flags parameter for many GPE interfaces has been removed.) See the
4669 ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore,
4671 Wysocki. ACPICA BZ 831.
4674 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus
4680 Implemented write support for DataTable operation regions. These regions
4682 defined via the DataTableRegion() operator. Previously, only read support
4684 implemented. The ACPI specification allows DataTableRegions to be
4688 Implemented a new subsystem option to force a copy of the DSDT to local
4689 memory. Optionally copy the entire DSDT to local memory (instead of
4691 mapping it.) There are some (albeit very rare) BIOSs that corrupt or
4693 the original DSDT, creating the need for this option. Default is FALSE,
4697 Implemented detection of a corrupted or replaced DSDT. This change adds
4698 support to detect a DSDT that has been corrupted and/or replaced from
4700 the OS (by firmware). This is typically catastrophic for the system, but
4702 been seen on some machines. Once this problem has been detected, the DSDT
4703 copy option can be enabled via system configuration. Lin Ming, Bob Moore.
4705 Fixed two problems with AcpiReallocateRootTable during the root table
4707 When copying the root table to the new allocation, the length used was
4708 incorrect. The new size was used instead of the current table size,
4710 too much data was copied. Also, the count of available slots for ACPI
4712 was not set correctly. Alexey Starikovskiy, Bob Moore.
4714 Example Code and Data Size: These are the sizes for the OS-independent
4715 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4716 debug version of the code includes the debug output trace mechanism and
4718 much larger code and data size.
4721 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
4722 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
4724 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
4725 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
4727 2) iASL Compiler/Disassembler and Tools:
4729 iASL: Implement limited typechecking for values returned from predefined
4730 control methods. The type of any returned static (unnamed) object is now
4731 validated. For example, Return(1). ACPICA BZ 786.
4733 iASL: Fixed a predefined name object verification regression. Fixes a
4735 introduced in version 20100304. An error is incorrectly generated if a
4736 predefined name is declared as a static named object with a value defined
4737 using the keywords "Zero", "One", or "Ones". Lin Ming.
4739 iASL: Added Windows 7 support for the -g option (get local ACPI tables)
4741 reducing the requested registry access rights. ACPICA BZ 842.
4743 Disassembler: fixed a possible fault when generating External()
4745 Introduced in commit ae7d6fd: Properly handle externals with parent-
4747 (carat). Fixes a string length allocation calculation. Lin Ming.
4749 ----------------------------------------
4750 04 March 2010. Summary of changes for version 20100304:
4752 1) ACPI CA Core Subsystem:
4754 Fixed a possible problem with the AML Mutex handling function
4755 AcpiExReleaseMutex where the function could fault under the very rare
4756 condition when the interpreter has blocked, the interpreter lock is
4758 the interpreter is then reentered via the same thread, and attempts to
4759 acquire an AML mutex that was previously acquired. FreeBSD report 140979.
4763 Implemented additional configuration support for the AML "Debug Object".
4764 Output from the debug object can now be enabled via a global variable,
4765 AcpiGbl_EnableAmlDebugObject. This will assist with remote machine
4767 This debug output is now available in the release version of ACPICA
4769 of just the debug version. Also, the entire debug output module can now
4771 configured out of the ACPICA build if desired. One new file added,
4772 executer/exdebug.c. Lin Ming, Bob Moore.
4774 Added header support for the ACPI MCHI table (Management Controller Host
4775 Interface Table). This table was added in ACPI 4.0, but the defining
4777 has only recently become available.
4779 Standardized output of integer values for ACPICA warnings/errors. Always
4781 0x prefix for hex output, always use %u for unsigned integer decimal
4783 Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about
4785 invocations.) These invocations were converted from the original
4786 ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835.
4788 Example Code and Data Size: These are the sizes for the OS-independent
4789 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4790 debug version of the code includes the debug output trace mechanism and
4792 much larger code and data size.
4795 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
4796 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
4798 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
4799 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
4801 2) iASL Compiler/Disassembler and Tools:
4803 iASL: Implemented typechecking support for static (non-control method)
4804 predefined named objects that are declared with the Name() operator. For
4805 example, the type of this object is now validated to be of type Integer:
4806 Name(_BBN, 1). This change migrates the compiler to using the core
4808 name table instead of maintaining a local version. Added a new file,
4809 aslpredef.c. ACPICA BZ 832.
4811 Disassembler: Added support for the ACPI 4.0 MCHI table.
4813 ----------------------------------------
4814 21 January 2010. Summary of changes for version 20100121:
4816 1) ACPI CA Core Subsystem:
4818 Added the 2010 copyright to all module headers and signons. This affects
4819 virtually every file in the ACPICA core subsystem, the iASL compiler, the
4820 tools/utilities, and the test suites.
4822 Implemented a change to the AcpiGetDevices interface to eliminate
4824 invocations of the _STA method. In the case where a specific _HID is
4825 requested, do not run _STA until a _HID match is found. This eliminates
4826 potentially dozens of _STA calls during a search for a particular
4828 which in turn can improve boot times. ACPICA BZ 828. Lin Ming.
4830 Implemented an additional repair for predefined method return values.
4832 to repair unexpected NULL elements within returned Package objects.
4835 Integer of value zero, a NULL String, or a zero-length Buffer as
4837 ACPICA BZ 818. Lin Ming, Bob Moore.
4839 Removed the obsolete ACPI_INTEGER data type. This type was introduced as
4841 code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0
4843 64-bit AML integers). It is now obsolete and this change removes it from
4845 ACPICA code base, replaced by UINT64. The original typedef has been
4847 for now for compatibility with existing device driver code. ACPICA BZ
4850 Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field
4852 the parse tree object.
4854 Added additional warning options for the gcc-4 generation. Updated the
4856 accordingly. This includes some code restructuring to eliminate
4858 code, elimination of some gotos, elimination of unused return values,
4860 additional casting, and removal of redundant declarations.
4862 Example Code and Data Size: These are the sizes for the OS-independent
4863 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4864 debug version of the code includes the debug output trace mechanism and
4866 much larger code and data size.
4869 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
4870 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
4872 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
4873 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
4875 2) iASL Compiler/Disassembler and Tools:
4877 No functional changes for this release.
4879 ----------------------------------------
4880 14 December 2009. Summary of changes for version 20091214:
4882 1) ACPI CA Core Subsystem:
4884 Enhanced automatic data type conversions for predefined name repairs.
4886 change expands the automatic repairs/conversions for predefined name
4888 values to make Integers, Strings, and Buffers fully interchangeable.
4891 Buffer can be converted to a Package of Integers if necessary. The
4893 module was completely restructured. Lin Ming, Bob Moore.
4895 Implemented automatic removal of null package elements during predefined
4897 repairs. This change will automatically remove embedded and trailing NULL
4898 package elements from returned package objects that are defined to
4901 variable number of sub-packages. The driver is then presented with a
4903 with no null elements to deal with. ACPICA BZ 819.
4905 Implemented a repair for the predefined _FDE and _GTM names. The expected
4906 return value for both names is a Buffer of 5 DWORDs. This repair fixes
4908 possible problems (both seen in the field), where a package of integers
4910 returned, or a buffer of BYTEs is returned. With assistance from Jung-uk
4913 Implemented additional module-level code support. This change will
4915 execute module-level code that is not at the root of the namespace (under
4917 Device object, etc.). Now executes the code within the current scope
4919 of the root. ACPICA BZ 762. Lin Ming.
4921 Fixed possible mutex acquisition errors when running _REG methods. Fixes
4923 problem where mutex errors can occur when running a _REG method that is
4925 the same scope as a method-defined operation region or an operation
4927 under a module-level IF block. This type of code is rare, so the problem
4929 not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore.
4931 Fixed a possible memory leak during module-level code execution. An
4933 could be leaked for each block of executed module-level code if the
4934 interpreter slack mode is enabled This change deletes any implicitly
4936 object from the module-level code block. Lin Ming.
4938 Removed messages for successful predefined repair(s). The repair
4940 was considered too wordy. Now, messages are only unconditionally emitted
4942 the return object cannot be repaired. Existing messages for successful
4943 repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ
4946 Example Code and Data Size: These are the sizes for the OS-independent
4947 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4948 debug version of the code includes the debug output trace mechanism and
4950 much larger code and data size.
4953 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
4954 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
4956 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
4957 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
4959 2) iASL Compiler/Disassembler and Tools:
4961 iASL: Fixed a regression introduced in 20091112 where intermediate .SRC
4963 were no longer automatically removed at the termination of the compile.
4965 acpiexec: Implemented the -f option to specify default region fill value.
4966 This option specifies the value used to initialize buffers that simulate
4967 operation regions. Default value is zero. Useful for debugging problems
4969 depend on a specific initial value for a region or field.
4971 ----------------------------------------
4972 12 November 2009. Summary of changes for version 20091112:
4974 1) ACPI CA Core Subsystem:
4976 Implemented a post-order callback to AcpiWalkNamespace. The existing
4977 interface only has a pre-order callback. This change adds an additional
4978 parameter for a post-order callback which will be more useful for bus
4980 ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference.
4982 Modified the behavior of the operation region memory mapping cache for
4983 SystemMemory. Ensure that the memory mappings created for operation
4985 do not cross 4K page boundaries. Crossing a page boundary while mapping
4986 regions can cause kernel warnings on some hosts if the pages have
4988 attributes. Such regions are probably BIOS bugs, and this is the
4990 Linux BZ 14445. Lin Ming.
4992 Implemented an automatic repair for predefined methods that must return
4993 sorted lists. This change will repair (by sorting) packages returned by
4995 _PSS, and _TSS. Drivers can now assume that the packages are correctly
4997 and do not contain NULL package elements. Adds one new file,
4998 namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore.
5000 Fixed a possible fault during predefined name validation if a return
5002 object contains NULL elements. Also adds a warning if a NULL element is
5003 followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement
5005 include repair or removal of all such NULL elements where possible.
5007 Implemented additional module-level executable AML code support. This
5009 will execute module-level code that is not at the root of the namespace
5010 (under a Device object, etc.) at table load time. Module-level executable
5012 code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming.
5014 Implemented a new internal function to create Integer objects. This
5016 simplifies miscellaneous object creation code. ACPICA BZ 823.
5018 Reduced the severity of predefined repair messages, Warning to Info.
5020 the object was successfully repaired, a warning is too severe. Reduced to
5022 info message for now. These messages may eventually be changed to debug-
5026 Example Code and Data Size: These are the sizes for the OS-independent
5027 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5028 debug version of the code includes the debug output trace mechanism and
5030 much larger code and data size.
5033 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
5034 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
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 2) iASL Compiler/Disassembler and Tools:
5041 iASL: Implemented Switch() with While(1) so that Break works correctly.
5043 change correctly implements the Switch operator with a surrounding
5045 so that the Break operator works as expected. ACPICA BZ 461. Lin Ming.
5047 iASL: Added a message if a package initializer list is shorter than
5049 length. Adds a new remark for a Package() declaration if an initializer
5051 exists, but is shorter than the declared length of the package. Although
5052 technically legal, this is probably a coding error and it is seen in the
5053 field. ACPICA BZ 815. Lin Ming, Bob Moore.
5055 iASL: Fixed a problem where the compiler could fault after the maximum
5057 of errors was reached (200).
5059 acpixtract: Fixed a possible warning for pointer cast if the compiler
5061 level set very high.
5063 ----------------------------------------
5064 13 October 2009. Summary of changes for version 20091013:
5066 1) ACPI CA Core Subsystem:
5068 Fixed a problem where an Operation Region _REG method could be executed
5070 than once. If a custom address space handler is installed by the host
5072 the "initialize operation regions" phase of the ACPICA initialization,
5074 _REG methods for that address space could be executed twice. This change
5075 fixes the problem. ACPICA BZ 427. Lin Ming.
5077 Fixed a possible memory leak for the Scope() ASL operator. When the exact
5078 invocation of "Scope(\)" is executed (change scope to root), one internal
5079 operand object was leaked. Lin Ming.
5081 Implemented a run-time repair for the _MAT predefined method. If the _MAT
5082 return value is defined as a Field object in the AML, and the field
5083 size is less than or equal to the default width of an integer (32 or
5085 can incorrectly return an Integer instead of a Buffer. ACPICA now
5086 automatically repairs this problem. ACPICA BZ 810.
5088 Implemented a run-time repair for the _BIF and _BIX predefined methods.
5090 "OEM Information" field is often incorrectly returned as an Integer with
5091 value zero if the field is not supported by the platform. This is due to
5093 ambiguity in the ACPI specification. The field should always be a string.
5094 ACPICA now automatically repairs this problem by returning a NULL string
5095 within the returned Package. ACPICA BZ 807.
5097 Example Code and Data Size: These are the sizes for the OS-independent
5098 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5099 debug version of the code includes the debug output trace mechanism and
5101 much larger code and data size.
5104 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
5105 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
5107 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
5108 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
5110 2) iASL Compiler/Disassembler and Tools:
5112 Disassembler: Fixed a problem where references to external symbols that
5113 contained one or more parent-prefixes (carats) were not handled
5115 possibly causing a fault. ACPICA BZ 806. Lin Ming.
5117 Disassembler: Restructured the code so that all functions that handle
5118 external symbols are in a single module. One new file is added,
5121 AML Debugger: Added a max count argument for the Batch command (which
5122 executes multiple predefined methods within the namespace.)
5124 iASL: Updated the compiler documentation (User Reference.) Available at
5125 http://www.acpica.org/documentation/. ACPICA BZ 750.
5127 AcpiXtract: Updated for Lint and other formatting changes. Close all open
5130 ----------------------------------------
5131 03 September 2009. Summary of changes for version 20090903:
5133 1) ACPI CA Core Subsystem:
5135 For Windows Vista compatibility, added the automatic execution of an _INI
5136 method located at the namespace root (\_INI). This method is executed at
5137 table load time. This support is in addition to the automatic execution
5139 \_SB._INI. Lin Ming.
5141 Fixed a possible memory leak in the interpreter for AML package objects
5143 the package initializer list is longer than the defined size of the
5145 This apparently can only happen if the BIOS changes the package size on
5147 fly (seen in a _PSS object), as ASL compilers do not allow this. The
5148 interpreter will truncate the package to the defined size (and issue an
5150 message), but previously could leave the extra objects undeleted if they
5152 pre-created during the argument processing (such is the case if the
5154 consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805.
5156 Fixed a problem seen when a Buffer or String is stored to itself via ASL.
5157 This has been reported in the field. Previously, ACPICA would zero out
5159 buffer/string. Now, the operation is treated as a noop. Provides Windows
5160 compatibility. ACPICA BZ 803. Lin Ming.
5162 Removed an extraneous error message for ASL constructs of the form
5163 Store(LocalX,LocalX) when LocalX is uninitialized. These curious
5165 are seen in many BIOSs and are once again treated as NOOPs and no error
5167 emitted when they are encountered. ACPICA BZ 785.
5169 Fixed an extraneous warning message if a _DSM reserved method returns a
5170 Package object. _DSM can return any type of object, so validation on the
5171 return type cannot be performed. ACPICA BZ 802.
5173 Example Code and Data Size: These are the sizes for the OS-independent
5174 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5175 debug version of the code includes the debug output trace mechanism and
5177 much larger code and data size.
5180 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
5181 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
5183 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
5184 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
5186 2) iASL Compiler/Disassembler and Tools:
5188 iASL: Fixed a problem with the use of the Alias operator and Resource
5189 Templates. The correct alias is now constructed and no error is emitted.
5192 iASL: Implemented the -I option to specify additional search directories
5194 include files. Allows multiple additional search paths for include files.
5195 Directories are searched in the order specified on the command line
5197 the local directory is searched.) ACPICA BZ 800.
5199 iASL: Fixed a problem where the full pathname for include files was not
5200 emitted for warnings/errors. This caused the IDE support to not work
5201 properly. ACPICA BZ 765.
5203 iASL: Implemented the -@ option to specify a Windows-style response file
5204 containing additional command line options. ACPICA BZ 801.
5206 AcpiExec: Added support to load multiple AML files simultaneously (such
5209 DSDT and multiple SSDTs). Also added support for wildcards within the AML
5210 pathname. These features allow all machine tables to be easily loaded and
5211 debugged together. ACPICA BZ 804.
5213 Disassembler: Added missing support for disassembly of HEST table Error
5217 ----------------------------------------
5218 30 July 2009. Summary of changes for version 20090730:
5220 The ACPI 4.0 implementation for ACPICA is complete with this release.
5222 1) ACPI CA Core Subsystem:
5224 ACPI 4.0: Added header file support for all new and changed ACPI tables.
5225 Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are
5227 for ACPI 4.0, but have previously been supported in ACPICA are: CPEP,
5229 EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT.
5231 have been some ACPI 4.0 changes to other existing tables. Split the large
5232 actbl1.h header into the existing actbl2.h header. ACPICA BZ 774.
5234 ACPI 4.0: Implemented predefined name validation for all new names. There
5236 31 new names in ACPI 4.0. The predefined validation module was split into
5238 files. The new file is namespace/nsrepair.c. ACPICA BZ 770.
5240 Implemented support for so-called "module-level executable code". This is
5241 executable AML code that exists outside of any control method and is
5243 to be executed at table load time. Although illegal since ACPI 2.0, this
5245 of code still exists and is apparently still being created. Blocks of
5247 code are now detected and executed as intended. Currently, the code
5249 must exist under either an If, Else, or While construct; these are the
5250 typical cases seen in the field. ACPICA BZ 762. Lin Ming.
5252 Implemented an automatic dynamic repair for predefined names that return
5253 nested Package objects. This applies to predefined names that are defined
5255 return a variable-length Package of sub-packages. If the number of sub-
5256 packages is one, BIOS code is occasionally seen that creates a simple
5258 package with no sub-packages. This code attempts to fix the problem by
5259 wrapping a new package object around the existing package. These methods
5261 be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA
5265 Fixed a regression introduced in 20090625 for the AcpiGetDevices
5267 The _HID/_CID matching was broken and no longer matched IDs correctly.
5271 Fixed a problem with AcpiReset where the reset would silently fail if the
5272 register was one of the protected I/O ports. AcpiReset now bypasses the
5274 validation mechanism. This may eventually be driven into the
5278 Fixed a regression related to the recent update of the AcpiRead/Write
5279 interfaces. A sleep/suspend could fail if the optional PM2 Control
5281 does not exist during an attempt to write the Bus Master Arbitration bit.
5282 (However, some hosts already delete the code that writes this bit, and
5284 code may in fact be obsolete at this date.) ACPICA BZ 799.
5286 Fixed a problem where AcpiTerminate could fault if inadvertently called
5288 in succession. ACPICA BZ 795.
5290 Example Code and Data Size: These are the sizes for the OS-independent
5291 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5292 debug version of the code includes the debug output trace mechanism and
5294 much larger code and data size.
5297 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
5298 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
5300 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
5301 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
5303 2) iASL Compiler/Disassembler and Tools:
5305 ACPI 4.0: Implemented disassembler support for all new ACPI tables and
5306 changes to existing tables. ACPICA BZ 775.
5308 ----------------------------------------
5309 25 June 2009. Summary of changes for version 20090625:
5311 The ACPI 4.0 Specification was released on June 16 and is available at
5312 www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will
5313 continue for the next few releases.
5315 1) ACPI CA Core Subsystem:
5317 ACPI 4.0: Implemented interpreter support for the IPMI operation region
5318 address space. Includes support for bi-directional data buffers and an
5320 address space handler (to be installed by an IPMI device driver.) ACPICA
5324 ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT.
5326 support in both the header files and the disassembler.
5328 Completed a major update for the AcpiGetObjectInfo external interface.
5330 - Support for variable, unlimited length HID, UID, and CID strings.
5331 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA,
5333 - Call the _SxW power methods on behalf of a device object.
5334 - Determine if a device is a PCI root bridge.
5335 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO.
5336 These changes will require an update to all callers of this interface.
5338 the updated ACPICA Programmer Reference for details. One new source file
5340 been added - utilities/utids.c. ACPICA BZ 368, 780.
5342 Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit
5343 transfers. The Value parameter has been extended from 32 bits to 64 bits
5345 order to support new ACPI 4.0 tables. These changes will require an
5348 all callers of these interfaces. See the ACPICA Programmer Reference for
5349 details. ACPICA BZ 768.
5351 Fixed several problems with AcpiAttachData. The handler was not invoked
5353 the host node was deleted. The data sub-object was not automatically
5355 when the host node was deleted. The interface to the handler had an
5357 parameter, this was removed. ACPICA BZ 778.
5359 Enhanced the function that dumps ACPI table headers. All non-printable
5360 characters in the string fields are now replaced with '?' (Signature,
5362 OemTableId, and CompilerId.) ACPI tables with non-printable characters in
5363 these fields are occasionally seen in the field. ACPICA BZ 788.
5365 Fixed a problem with predefined method repair code where the code that
5366 attempts to repair/convert an object of incorrect type is only executed
5368 the first time the predefined method is called. The mechanism that
5370 warnings on subsequent calls was interfering with the repair mechanism.
5373 Fixed a possible memory leak in the predefined validation/repair code
5376 buffer is automatically converted to an expected string object.
5378 Removed obsolete 16-bit files from the distribution and from the current
5380 tree head. ACPICA BZ 776.
5382 Example Code and Data Size: These are the sizes for the OS-independent
5383 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5384 debug version of the code includes the debug output trace mechanism and
5386 much larger code and data size.
5389 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
5390 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
5392 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
5393 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
5395 2) iASL Compiler/Disassembler and Tools:
5397 ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI
5398 operation region keyword. ACPICA BZ 771, 772. Lin Ming.
5400 ACPI 4.0: iASL - implemented compile-time validation support for all new
5401 predefined names and control methods (31 total). ACPICA BZ 769.
5403 ----------------------------------------
5404 21 May 2009. Summary of changes for version 20090521:
5406 1) ACPI CA Core Subsystem:
5408 Disabled the preservation of the SCI enable bit in the PM1 control
5410 The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification
5413 a "preserved" bit - "OSPM always preserves this bit position", section
5414 4.7.3.2.1. However, some machines fail if this bit is in fact preserved
5415 because the bit needs to be explicitly set by the OS as a workaround. No
5416 machines fail if the bit is not preserved. Therefore, ACPICA no longer
5417 attempts to preserve this bit.
5419 Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or
5420 incorrectly formed _PRT package could cause a fault. Added validation to
5421 ensure that each package element is actually a sub-package.
5423 Implemented a new interface to install or override a single control
5425 AcpiInstallMethod. This interface is useful when debugging in order to
5427 an existing method or to install a missing method without having to
5429 the entire ACPI table. See the ACPICA Programmer Reference for use and
5430 examples. Lin Ming, Bob Moore.
5432 Fixed several reference count issues with the DdbHandle object that is
5433 created from a Load or LoadTable operator. Prevent premature deletion of
5435 object. Also, mark the object as invalid once the table has been
5437 This is needed because the handle itself may not be deleted after the
5439 unload, depending on whether it has been stored in a named object by the
5442 Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple
5443 mutexes of the same sync level are acquired but then not released in
5445 opposite order, the internally maintained Current Sync Level becomes
5447 and can cause subsequent execution errors. ACPICA BZ 471.
5449 Changed the allowable release order for ASL mutex objects. The ACPI 4.0
5450 specification has been changed to make the SyncLevel for mutex objects
5452 useful. When releasing a mutex, the SyncLevel of the mutex must now be
5454 same as the current sync level. This makes more sense than the previous
5456 (SyncLevel less than or equal). This change updates the code to match the
5459 Fixed a problem with the local version of the AcpiOsPurgeCache function.
5461 (local) cache must be locked during all cache object deletions. Andrew
5464 Updated the Load operator to use operation region interfaces. This
5466 direct memory mapping with region access calls. Now, all region accesses
5468 through the installed region handler as they should.
5470 Simplified and optimized the NsGetNextNode function. Reduced parameter
5472 and reduced code for this frequently used function.
5474 Example Code and Data Size: These are the sizes for the OS-independent
5475 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5476 debug version of the code includes the debug output trace mechanism and
5478 much larger code and data size.
5481 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
5482 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
5484 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
5485 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
5487 2) iASL Compiler/Disassembler and Tools:
5489 Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some
5491 with sub-table disassembly and handling invalid sub-tables. Attempt
5493 after an invalid sub-table ID.
5495 ----------------------------------------
5496 22 April 2009. Summary of changes for version 20090422:
5498 1) ACPI CA Core Subsystem:
5500 Fixed a compatibility issue with the recently released I/O port
5502 mechanism. For windows compatibility, 1) On a port protection violation,
5503 simply ignore the request and do not return an exception (allow the
5505 method to continue execution.) 2) If only part of the request overlaps a
5506 protected port, read/write the individual ports that are not protected.
5510 Enhanced the execution of the ASL/AML BreakPoint operator so that it
5512 breaks into the AML debugger if the debugger is present. This matches the
5513 ACPI-defined behavior.
5515 Fixed several possible warnings related to the use of the configurable
5516 ACPI_THREAD_ID. This type can now be configured as either an integer or a
5517 pointer with no warnings. Also fixes several warnings in printf-like
5518 statements for the 64-bit build when the type is configured as a pointer.
5521 Fixed a number of possible warnings when compiling with gcc 4+ (depending
5523 warning options.) Examples include printf formats, aliasing, unused
5525 missing prototypes, missing switch default statements, use of non-ANSI
5526 library functions, use of non-ANSI constructs. See generate/unix/Makefile
5528 a list of warning options used with gcc 3 and 4. ACPICA BZ 735.
5530 Example Code and Data Size: These are the sizes for the OS-independent
5531 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5532 debug version of the code includes the debug output trace mechanism and
5534 much larger code and data size.
5537 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
5538 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
5540 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
5541 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
5543 2) iASL Compiler/Disassembler and Tools:
5545 iASL: Fixed a generation warning from Bison 2.3 and fixed several
5550 iASL: Fixed a problem where the Unix/Linux versions of the compiler could
5552 correctly digest Windows/DOS formatted files (with CR/LF).
5554 iASL: Added a new option for "quiet mode" (-va) that produces only the
5555 compilation summary, not individual errors and warnings. Useful for large
5558 AcpiExec: Implemented a new option (-z) to enable a forced
5560 timeout that can be used to detect hang conditions during execution of
5562 code (includes both internal semaphores and AML-defined mutexes and
5565 Added new makefiles for the generation of acpica in a generic unix-like
5566 environment. These makefiles are intended to generate the acpica tools
5568 utilities from the original acpica git source tree structure.
5570 Test Suites: Updated and cleaned up the documentation files. Updated the
5571 copyrights to 2009, affecting all source files. Use the new version of
5573 with quiet mode. Increased the number of available semaphores in the
5575 OSL, allowing the aslts to execute fully on Windows. For the Unix OSL,
5577 an alternate implementation of the semaphore timeout to allow aslts to
5578 execute fully on Cygwin.
5580 ----------------------------------------
5581 20 March 2009. Summary of changes for version 20090320:
5583 1) ACPI CA Core Subsystem:
5585 Fixed a possible race condition between AcpiWalkNamespace and dynamic
5587 unloads. Added a reader/writer locking mechanism to allow multiple
5589 namespace walks (readers), but block a dynamic table unload until it can
5591 exclusive write access to the namespace. This fixes a problem where a
5593 unload could (possibly catastrophically) delete the portion of the
5595 that is currently being examined by a walk. Adds a new file, utlock.c,
5597 implements the reader/writer lock mechanism. ACPICA BZ 749.
5599 Fixed a regression introduced in version 20090220 where a change to the
5601 handling could cause the ACPICA subsystem to access non-existent I/O
5604 Modified the handling of FADT register and table (FACS/DSDT) addresses.
5606 FADT can contain both 32-bit and 64-bit versions of these addresses.
5607 Previously, the 64-bit versions were favored, meaning that if both 32 and
5609 versions were valid, but not equal, the 64-bit version was used. This was
5610 found to cause some machines to fail. Now, in this case, the 32-bit
5612 is used instead. This now matches the Windows behavior.
5614 Implemented a new mechanism to protect certain I/O ports. Provides
5616 compatibility and protects the standard PC I/O ports from access via AML
5617 code. Adds a new file, hwvalid.c
5619 Fixed a possible extraneous warning message from the FADT support. The
5620 message warns of a 32/64 length mismatch between the legacy and GAS
5621 definitions for a register.
5623 Removed the obsolete AcpiOsValidateAddress OSL interface. This interface
5625 made obsolete by the port protection mechanism above. It was previously
5627 to validate the entire address range of an operation region, which could
5629 incorrect if the range included illegal ports, but fields within the
5630 operation region did not actually access those ports. Validation is now
5631 performed on a per-field basis instead of the entire region.
5633 Modified the handling of the PM1 Status Register ignored bit (bit 11.)
5634 Ignored bits must be "preserved" according to the ACPI spec. Usually,
5636 means a read/modify/write when writing to the register. However, for
5638 registers, writing a one means clear the event. Writing a zero means
5640 the event (do not clear.) This behavior is clarified in the ACPI 4.0
5642 and the ACPICA code now simply always writes a zero to the ignored bit.
5644 Modified the handling of ignored bits for the PM1 A/B Control Registers.
5646 per the ACPI specification, for the control registers, preserve
5647 (read/modify/write) all bits that are defined as either reserved or
5650 Updated the handling of write-only bits in the PM1 A/B Control Registers.
5651 When reading the register, zero the write-only bits as per the ACPI spec.
5652 ACPICA BZ 443. Lin Ming.
5654 Removed "Linux" from the list of supported _OSI strings. Linux no longer
5655 wants to reply true to this request. The Windows strings are the only
5657 through the AML that are tested and known to work properly.
5660 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
5661 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
5663 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
5664 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
5666 2) iASL Compiler/Disassembler and Tools:
5668 Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c
5672 ----------------------------------------
5673 20 February 2009. Summary of changes for version 20090220:
5675 1) ACPI CA Core Subsystem:
5677 Optimized the ACPI register locking. Removed locking for reads from the
5679 bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock
5681 not required when reading the single-bit registers. The
5682 AcpiGetRegisterUnlocked function is no longer needed and has been
5684 This will improve performance for reads on these registers. ACPICA BZ
5687 Fixed the parameter validation for AcpiRead/Write. Now return
5688 AE_BAD_PARAMETER if the input register pointer is null, and
5691 the register has an address of zero. Previously, these cases simply
5693 AE_OK. For optional registers such as PM1B status/enable/control, the
5695 should check for a valid register address before calling. ACPICA BZ 748.
5697 Renamed the external ACPI bit register access functions. Renamed
5698 AcpiGetRegister and AcpiSetRegister to clarify the purpose of these
5699 functions. The new names are AcpiReadBitRegister and
5700 AcpiWriteBitRegister.
5701 Also, restructured the code for these functions by simplifying the code
5703 and condensing duplicate code to reduce code size.
5705 Added new functions to transparently handle the possibly split PM1 A/B
5706 registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two
5708 now handle the split registers for PM1 Status, Enable, and Control.
5713 Added a function to handle the PM1 control registers,
5714 AcpiHwWritePm1Control.
5715 This function writes both of the PM1 control registers (A/B). These
5717 are different than the PM1 A/B status and enable registers in that
5719 values can be written to the A/B registers. Most notably, the SLP_TYP
5721 can be different, as per the values returned from the _Sx predefined
5724 Removed an extra register write within AcpiHwClearAcpiStatus. This
5726 was writing an optional PM1B status register twice. The existing call to
5728 low-level AcpiHwRegisterWrite automatically handles a possibly split PM1
5730 register. ACPICA BZ 751.
5732 Split out the PM1 Status registers from the FADT. Added new globals for
5734 registers (A/B), similar to the way the PM1 Enable registers are handled.
5735 Instead of overloading the FADT Event Register blocks. This makes the
5737 clearer and less prone to error.
5739 Fixed the warning message for when the platform contains too many ACPI
5741 for the default size of the global root table data structure. The
5743 for the truncation value was incorrect.
5745 Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this
5746 obsolete macro, since it is now a simple reference to ->common.type.
5748 were about 150 invocations of the macro across 41 files. ACPICA BZ 755.
5750 Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as
5751 TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to
5752 simply SLEEP_TYPE. ACPICA BZ 754.
5754 Conditionally compile the AcpiSetFirmwareWakingVector64 function. This
5755 function is only needed on 64-bit host operating systems and is thus not
5756 included for 32-bit hosts.
5758 Debug output: print the input and result for invocations of the _OSI
5760 control method via the ACPI_LV_INFO debug level. Also, reduced some of
5762 verbosity of this debug level. Len Brown.
5764 Example Code and Data Size: These are the sizes for the OS-independent
5765 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5766 debug version of the code includes the debug output trace mechanism and
5768 much larger code and data size.
5771 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
5772 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
5774 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
5775 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
5777 2) iASL Compiler/Disassembler and Tools:
5779 Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the
5780 various legal performance profiles.
5782 ----------------------------------------
5783 23 January 2009. Summary of changes for version 20090123:
5785 1) ACPI CA Core Subsystem:
5787 Added the 2009 copyright to all module headers and signons. This affects
5788 virtually every file in the ACPICA core subsystem, the iASL compiler, and
5789 the tools/utilities.
5791 Implemented a change to allow the host to override any ACPI table,
5793 dynamically loaded tables. Previously, only the DSDT could be replaced by
5795 host. With this change, the AcpiOsTableOverride interface is called for
5797 table found in the RSDT/XSDT during ACPICA initialization, and also
5799 a table is dynamically loaded via the AML Load operator.
5801 Updated FADT flag definitions, especially the Boot Architecture flags.
5803 Debugger: For the Find command, automatically pad the input ACPI name
5805 underscores if the name is shorter than 4 characters. This enables a
5807 with the actual namespace entry which is itself padded with underscores.
5809 Example Code and Data Size: These are the sizes for the OS-independent
5810 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5811 debug version of the code includes the debug output trace mechanism and
5813 much larger code and data size.
5816 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
5817 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
5819 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
5820 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
5822 2) iASL Compiler/Disassembler and Tools:
5824 Fix build error under Bison-2.4.
5826 Dissasembler: Enhanced FADT support. Added decoding of the Boot
5828 flags. Now decode all flags, regardless of the FADT version. Flag output
5829 includes the FADT version which first defined each flag.
5831 The iASL -g option now dumps the RSDT to a file (in addition to the FADT
5833 DSDT). Windows only.
5835 ----------------------------------------
5836 04 December 2008. Summary of changes for version 20081204:
5838 1) ACPI CA Core Subsystem:
5840 The ACPICA Programmer Reference has been completely updated and revamped
5842 this release. This includes updates to the external interfaces, OSL
5843 interfaces, the overview sections, and the debugger reference.
5845 Several new ACPICA interfaces have been implemented and documented in the
5846 programmer reference:
5847 AcpiReset - Writes the reset value to the FADT-defined reset register.
5848 AcpiDisableAllGpes - Disable all available GPEs.
5849 AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs.
5850 AcpiGetGpeDevice - Get the GPE block device associated with a GPE.
5851 AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs.
5852 AcpiRead - Low-level read ACPI register (was HwLowLevelRead.)
5853 AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.)
5855 Most of the public ACPI hardware-related interfaces have been moved to a
5857 file, components/hardware/hwxface.c
5859 Enhanced the FADT parsing and low-level ACPI register access: The ACPI
5860 register lengths within the FADT are now used, and the low level ACPI
5861 register access no longer hardcodes the ACPI register lengths. Given that
5862 there may be some risk in actually trusting the FADT register lengths, a
5864 time option was added to fall back to the default hardcoded lengths if
5866 FADT proves to contain incorrect values - UseDefaultRegisterWidths. This
5867 option is set to true for now, and a warning is issued if a suspicious
5869 register length is overridden with the default value.
5871 Fixed a reference count issue in NsRepairObject. This problem was
5873 in version 20081031 as part of a fix to repair Buffer objects within
5876 Added semaphore support to the Linux/Unix application OS-services layer
5877 (OSL). ACPICA BZ 448. Lin Ming.
5879 Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes
5881 be implemented in the OSL, or will binary semaphores be used instead.
5883 Example Code and Data Size: These are the sizes for the OS-independent
5884 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5885 debug version of the code includes the debug output trace mechanism and
5887 much larger code and data size.
5890 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
5891 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
5893 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
5894 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
5896 2) iASL Compiler/Disassembler and Tools:
5898 iASL: Completed the '-e' option to include additional ACPI tables in
5901 aid with disassembly and External statement generation. ACPICA BZ 742.
5905 iASL: Removed the "named object in while loop" error. The compiler cannot
5906 determine how many times a loop will execute. ACPICA BZ 730.
5908 Disassembler: Implemented support for FADT revision 2 (MS extension).
5912 Disassembler: Updates for several ACPI data tables (HEST, EINJ, and
5915 ----------------------------------------
5916 31 October 2008. Summary of changes for version 20081031:
5918 1) ACPI CA Core Subsystem:
5920 Restructured the ACPICA header files into public/private. acpi.h now
5922 only the "public" acpica headers. All other acpica headers are "private"
5924 should not be included by acpica users. One new file, accommon.h is used
5926 include the commonly used private headers for acpica code generation.
5928 plans include moving all private headers to a new subdirectory.
5930 Implemented an automatic Buffer->String return value conversion for
5931 predefined ACPI methods. For these methods (such as _BIF), added
5933 conversion for return objects that are required to be a String, but a
5935 was found instead. This can happen when reading string battery data from
5937 operation region, because it used to be difficult to convert the data
5939 buffer to string from within the ASL. Ensures that the host OS is
5941 with a valid null-terminated string. Linux BZ 11822.
5943 Updated the FACS waking vector interfaces. Split
5944 AcpiSetFirmwareWakingVector
5945 into two: one for the 32-bit vector, another for the 64-bit vector. This
5947 required because the host OS must setup the wake much differently for
5949 vector (real vs. protected mode, etc.) and the interface itself should
5952 deciding which vector to use. Also, eliminated the
5953 GetFirmwareWakingVector
5954 interface, as it served no purpose (only the firmware reads the vector,
5956 only writes the vector.) ACPICA BZ 731.
5958 Implemented a mechanism to escape infinite AML While() loops. Added a
5960 counter to force exit from AML While loops if the count becomes too
5962 This can occur in poorly written AML when the hardware does not respond
5963 within a while loop and the loop does not implement a timeout. The
5965 loop count is configurable. A new exception code is returned when a loop
5967 broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore.
5969 Optimized the execution of AML While loops. Previously, a control state
5970 object was allocated and freed for each execution of the loop. The
5971 optimization is to simply reuse the control state for each iteration.
5973 speeds up the raw loop execution time by about 5%.
5975 Enhanced the implicit return mechanism. For Windows compatibility, return
5977 implicit integer of value zero for methods that contain no executable
5979 Such methods are seen in the field as stubs (presumably), and can cause
5980 drivers to fail if they expect a return value. Lin Ming.
5982 Allow multiple backslashes as root prefixes in namepaths. In a fully
5983 qualified namepath, allow multiple backslash prefixes. This can happen
5985 is seen in the field) because of the use of a double-backslash in strings
5986 (since backslash is the escape character) causing confusion. ACPICA BZ
5990 Emit a warning if two different FACS or DSDT tables are discovered in the
5991 FADT. Checks if there are two valid but different addresses for the FACS
5993 DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.)
5995 Consolidated the method argument count validation code. Merged the code
5997 validates control method argument counts into the predefined validation
5998 module. Eliminates possible multiple warnings for incorrect argument
6001 Implemented ACPICA example code. Includes code for ACPICA initialization,
6002 handler installation, and calling a control method. Available at
6003 source/tools/examples.
6005 Added a global pointer for FACS table to simplify internal FACS access.
6007 the global pointer instead of using AcpiGetTableByIndex for each FACS
6009 This simplifies the code for the Global Lock and the Firmware Waking
6012 Example Code and Data Size: These are the sizes for the OS-independent
6013 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6014 debug version of the code includes the debug output trace mechanism and
6016 much larger code and data size.
6019 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
6020 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
6022 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
6023 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
6025 2) iASL Compiler/Disassembler and Tools:
6027 iASL: Improved disassembly of external method calls. Added the -e option
6029 allow the inclusion of additional ACPI tables to help with the
6032 method invocations and the generation of external declarations during the
6033 disassembly. Certain external method invocations cannot be disassembled
6034 properly without the actual declaration of the method. Use the -e option
6036 include the table where the external method(s) are actually declared.
6038 useful for disassembling SSDTs that make method calls back to the master
6039 DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl
6041 -e dsdt.aml ssdt1.aml
6043 iASL: Fix to allow references to aliases within ASL namepaths. Fixes a
6044 problem where the use of an alias within a namepath would result in a not
6045 found error or cause the compiler to fault. Also now allows forward
6046 references from the Alias operator itself. ACPICA BZ 738.
6048 ----------------------------------------
6049 26 September 2008. Summary of changes for version 20080926:
6051 1) ACPI CA Core Subsystem:
6053 Designed and implemented a mechanism to validate predefined ACPI methods
6055 objects. This code validates the predefined ACPI objects (objects whose
6057 start with underscore) that appear in the namespace, at the time they are
6058 evaluated. The argument count and the type of the returned object are
6059 validated against the ACPI specification. The purpose of this validation
6061 to detect problems with the BIOS-implemented predefined ACPI objects
6063 the results are returned to the ACPI-related drivers. Future enhancements
6065 include actual repair of incorrect return objects where possible. Two new
6066 files are nspredef.c and acpredef.h.
6068 Fixed a fault in the AML parser if a memory allocation fails during the
6070 completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492.
6072 Fixed an issue with implicit return compatibility. This change improves
6074 implicit return mechanism to be more compatible with the MS interpreter.
6076 Ming, ACPICA BZ 349.
6078 Implemented support for zero-length buffer-to-string conversions. Allow
6080 length strings during interpreter buffer-to-string conversions. For
6082 during the ToDecimalString and ToHexString operators, as well as implicit
6083 conversions. Fiodor Suietov, ACPICA BZ 585.
6085 Fixed two possible memory leaks in the error exit paths of
6086 AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions
6088 similar in that they use a stack of state objects in order to eliminate
6089 recursion. The stack must be fully unwound and deallocated if an error
6090 occurs. Lin Ming. ACPICA BZ 383.
6092 Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the
6094 ACPI register table. This bit does not exist and is unused. Lin Ming, Bob
6095 Moore ACPICA BZ 442.
6097 Removed the obsolete version number in module headers. Removed the
6098 "$Revision" number that appeared in each module header. This version
6100 was useful under SourceSafe and CVS, but has no meaning under git. It is
6102 only incorrect, it could also be misleading.
6104 Example Code and Data Size: These are the sizes for the OS-independent
6105 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6106 debug version of the code includes the debug output trace mechanism and
6108 much larger code and data size.
6111 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
6112 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
6114 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
6115 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
6117 ----------------------------------------
6118 29 August 2008. Summary of changes for version 20080829:
6120 1) ACPI CA Core Subsystem:
6122 Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type
6123 Reference. Changes include the elimination of cheating on the Object
6125 for the DdbHandle subtype, addition of a reference class field to
6126 differentiate the various reference types (instead of an AML opcode), and
6128 cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723
6130 Reduce an error to a warning for an incorrect method argument count.
6131 Previously aborted with an error if too few arguments were passed to a
6132 control method via the external ACPICA interface. Now issue a warning
6134 and continue. Handles the case where the method inadvertently declares
6136 many arguments, but does not actually use the extra ones. Applies mainly
6138 the predefined methods. Lin Ming. Linux BZ 11032.
6140 Disallow the evaluation of named object types with no intrinsic value.
6142 AE_TYPE for objects that have no value and therefore evaluation is
6144 Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation
6146 these types were allowed, but an exception would be generated at some
6148 during the evaluation. Now, the error is generated up front.
6150 Fixed a possible memory leak in the AcpiNsGetExternalPathname function
6151 (nsnames.c). Fixes a leak in the error exit path.
6153 Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These
6155 levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and
6157 interfaces. Also added ACPI_DB_EVENTS to correspond with the existing
6160 Removed obsolete and/or unused exception codes from the acexcep.h header.
6161 There is the possibility that certain device drivers may be affected if
6163 use any of these exceptions.
6165 The ACPICA documentation has been added to the public git source tree,
6167 acpica/documents. Included are the ACPICA programmer reference, the iASL
6168 compiler reference, and the changes.txt release logfile.
6170 Example Code and Data Size: These are the sizes for the OS-independent
6171 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6172 debug version of the code includes the debug output trace mechanism and
6174 much larger code and data size.
6177 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
6178 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
6180 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
6181 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
6183 2) iASL Compiler/Disassembler and Tools:
6185 Allow multiple argument counts for the predefined _SCP method. ACPI 3.0
6186 defines _SCP with 3 arguments. Previous versions defined it with only 1
6187 argument. iASL now allows both definitions.
6189 iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for
6191 length subtables when disassembling ACPI tables. Also fixed a couple of
6192 errors where a full 16-bit table type field was not extracted from the
6196 acpisrc: Improve comment counting mechanism for generating source code
6197 statistics. Count first and last lines of multi-line comments as
6199 not comment lines. Handle Linux legal header in addition to standard
6203 ----------------------------------------
6205 29 July 2008. Summary of changes for version 20080729:
6207 1) ACPI CA Core Subsystem:
6209 Fix a possible deadlock in the GPE dispatch. Remove call to
6210 AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will
6212 to acquire the GPE lock but can deadlock since the GPE lock is already
6214 at dispatch time. This code was introduced in version 20060831 as a
6216 to Linux BZ 6881 and has since been removed from Linux.
6218 Add a function to dereference returned reference objects. Examines the
6220 object from a call to AcpiEvaluateObject. Any Index or RefOf references
6222 automatically dereferenced in an attempt to return something useful
6224 reference types cannot be converted into an external ACPI_OBJECT.)
6226 MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105
6228 x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new
6229 subtables for the MADT and one new subtable for the SRAT. Includes
6230 disassembler and AcpiSrc support. Data from the Intel 64 Architecture
6232 Specification, June 2008.
6234 Additional error checking for pathname utilities. Add error check after
6236 calls to AcpiNsGetPathnameLength. Add status return from
6237 AcpiNsBuildExternalPath and check after all calls. Add parameter
6239 to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar.
6241 Return status from the global init function AcpiUtGlobalInitialize. This
6243 used by both the kernel subsystem and the utilities such as iASL
6245 The function could possibly fail when the caches are initialized. Yang
6248 Add a function to decode reference object types to strings. Created for
6249 improved error messages.
6251 Improve object conversion error messages. Better error messages during
6253 conversion from internal to the external ACPI_OBJECT. Used for external
6255 to AcpiEvaluateObject.
6257 Example Code and Data Size: These are the sizes for the OS-independent
6258 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6259 debug version of the code includes the debug output trace mechanism and
6261 much larger code and data size.
6264 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
6265 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
6267 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
6268 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
6270 2) iASL Compiler/Disassembler and Tools:
6272 Debugger: fix a possible hang when evaluating non-methods. Fixes a
6274 introduced in version 20080701. If the object being evaluated (via
6276 command) is not a method, the debugger can hang while trying to obtain
6278 existent parameters.
6280 iASL: relax error for using reserved "_T_x" identifiers. These names can
6281 appear in a disassembled ASL file if they were emitted by the original
6282 compiler. Instead of issuing an error or warning and forcing the user to
6283 manually change these names, issue a remark instead.
6285 iASL: error if named object created in while loop. Emit an error if any
6287 object is created within a While loop. If allowed, this code will
6290 run-time error on the second iteration of the loop when an attempt is
6293 create the same named object twice. ACPICA bugzilla 730.
6295 iASL: Support absolute pathnames for include files. Add support for
6297 pathnames within the Include operator. previously, only relative
6301 iASL: Enforce minimum 1 interrupt in interrupt macro and Resource
6303 The ACPI spec requires one interrupt minimum. BZ 423
6305 iASL: Handle a missing ResourceSource arg, with a present SourceIndex.
6306 Handles the case for the Interrupt Resource Descriptor where
6307 the ResourceSource argument is omitted but ResourceSourceIndex
6308 is present. Now leave room for the Index. BZ 426
6310 iASL: Prevent error message if CondRefOf target does not exist. Fixes
6312 where an error message is emitted if the target does not exist. BZ 516
6314 iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option
6315 (get ACPI tables on Windows). This was apparently broken in version
6318 AcpiXtract: Handle EOF while extracting data. Correctly handle the case
6320 the EOF happens immediately after the last table in the input file. Print
6321 completion message. Previously, no message was displayed in this case.
6323 ----------------------------------------
6324 01 July 2008. Summary of changes for version 20080701:
6326 0) Git source tree / acpica.org
6328 Fixed a problem where a git-clone from http would not transfer the entire
6331 1) ACPI CA Core Subsystem:
6333 Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one
6334 enable bit. Now performs a read-change-write of the enable register
6336 of simply writing out the cached enable mask. This will prevent
6338 enabling of GPEs if a rogue GPE is received during initialization (before
6340 handlers are installed.)
6342 Implemented a copy for dynamically loaded tables. Previously, dynamically
6343 loaded tables were simply mapped - but on some machines this memory is
6344 corrupted after suspend. Now copy the table to a local buffer. For the
6345 OpRegion case, added checksum verify. Use the table length from the table
6346 header, not the region length. For the Buffer case, use the table length
6347 also. Dennis Noordsij, Bob Moore. BZ 10734
6349 Fixed a problem where the same ACPI table could not be dynamically loaded
6351 unloaded more than once. Without this change, a table cannot be loaded
6353 once it has been loaded/unloaded one time. The current mechanism does not
6354 unregister a table upon an unload. During a load, if the same table is
6356 this no longer returns an exception. BZ 722
6358 Fixed a problem where the wrong descriptor length was calculated for the
6359 EndTag descriptor in 64-bit mode. The "minimal" descriptors such as
6361 are calculated as 12 bytes long, but the actual length in the internal
6362 descriptor is 16 because of the round-up to 8 on the 64-bit build.
6364 by Linn Crosetto. BZ 728
6366 Fixed a possible memory leak in the Unload operator. The DdbHandle
6368 by Load() did not have its reference count decremented during unload,
6370 to a memory leak. Lin Ming. BZ 727
6372 Fixed a possible memory leak when deleting thermal/processor objects. Any
6373 associated notify handlers (and objects) were not being deleted. Fiodor
6376 Fixed the ordering of the ASCII names in the global mutex table to match
6378 actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug
6380 Vegard Nossum. BZ 726
6382 Enhanced the AcpiGetObjectInfo interface to return the number of required
6383 arguments if the object is a control method. Added this call to the
6385 so the proper number of default arguments are passed to a method. This
6386 prevents a warning when executing methods from AcpiExec.
6388 Added a check for an invalid handle in AcpiGetObjectInfo. Return
6389 AE_BAD_PARAMETER if input handle is invalid. BZ 474
6391 Fixed an extraneous warning from exconfig.c on the 64-bit build.
6393 Example Code and Data Size: These are the sizes for the OS-independent
6394 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6395 debug version of the code includes the debug output trace mechanism and
6397 much larger code and data size.
6400 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
6401 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
6403 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
6404 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
6406 2) iASL Compiler/Disassembler and Tools:
6408 iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both
6409 resource descriptor names.
6411 iASL: Detect invalid ASCII characters in input (windows version). Removed
6413 "-CF" flag from the flex compile, enables correct detection of non-ASCII
6414 characters in the input. BZ 441
6416 iASL: Eliminate warning when result of LoadTable is not used. Eliminate
6418 "result of operation not used" warning when the DDB handle returned from
6419 LoadTable is not used. The warning is not needed. BZ 590
6421 AcpiExec: Add support for dynamic table load/unload. Now calls _CFG
6424 pass address of table to the AML. Added option to disable OpRegion
6426 to allow creation of an OpRegion with a real address that was passed to
6428 All of this allows testing of the Load and Unload operators from
6431 Debugger: update tables command for unloaded tables. Handle unloaded
6433 and use the standard table header output routine.
6435 ----------------------------------------
6436 09 June 2008. Summary of changes for version 20080609:
6438 1) ACPI CA Core Subsystem:
6440 Implemented a workaround for reversed _PRT entries. A significant number
6442 BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This
6443 change dynamically detects and repairs this problem. Provides
6445 with MS ACPI. BZ 6859
6447 Simplified the internal ACPI hardware interfaces to eliminate the locking
6448 flag parameter from Register Read/Write. Added a new external interface,
6449 AcpiGetRegisterUnlocked.
6451 Fixed a problem where the invocation of a GPE control method could hang.
6453 was a regression introduced in 20080514. The new method argument count
6454 validation mechanism can enter an infinite loop when a GPE method is
6455 dispatched. Problem fixed by removing the obsolete code that passed GPE
6457 information to the notify handler via the control method parameter
6460 Fixed a problem where the _SST execution status was incorrectly returned
6462 the caller of AcpiEnterSleepStatePrep. This was a regression introduced
6464 20080514. _SST is optional and a NOT_FOUND exception should never be
6467 Fixed a problem where a deleted object could be accessed from within the
6469 parser. This was a regression introduced in version 20080123 as a fix for
6471 Unload operator. Lin Ming. BZ 10669
6473 Cleaned up the debug operand dump mechanism. Eliminated unnecessary
6475 and eliminated the use of a negative index in a loop. Operands are now
6476 displayed in the correct order, not backwards. This also fixes a
6478 introduced in 20080514 on 64-bit systems where the elimination of
6479 ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ
6482 Fixed a possible memory leak in EvPciConfigRegionSetup where the error
6484 path did not delete a locally allocated structure.
6486 Updated definitions for the DMAR and SRAT tables to synchronize with the
6487 current specifications. Includes disassembler support.
6489 Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect
6490 loop termination value was used. Loop terminated on iteration early,
6492 one mutex. Linn Crosetto
6494 Example Code and Data Size: These are the sizes for the OS-independent
6495 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6496 debug version of the code includes the debug output trace mechanism and
6498 much larger code and data size.
6501 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
6502 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
6504 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
6505 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
6507 2) iASL Compiler/Disassembler and Tools:
6509 Disassembler: Implemented support for EisaId() within _CID objects. Now
6510 disassemble integer _CID objects back to EisaId invocations, including
6511 multiple integers within _CID packages. Includes single-step support for
6514 Disassembler: Added support for DMAR and SRAT table definition changes.
6516 ----------------------------------------
6517 14 May 2008. Summary of changes for version 20080514:
6519 1) ACPI CA Core Subsystem:
6521 Fixed a problem where GPEs were enabled too early during the ACPICA
6522 initialization. This could lead to "handler not installed" errors on some
6523 machines. Moved GPE enable until after _REG/_STA/_INI methods are run.
6525 ensures that all operation regions and devices throughout the namespace
6527 been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916.
6529 Implemented a change to the enter sleep code. Moved execution of the _GTS
6530 method to just before setting sleep enable bit. The execution was moved
6532 AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed
6533 immediately before the SLP_EN bit is set, as per the ACPI specification.
6536 Implemented a fix to disable unknown GPEs (2nd version). Now always
6538 the GPE, even if ACPICA thinks that that it is already disabled. It is
6539 possible that the AML or some other code has enabled the GPE unbeknownst
6543 Fixed a problem with the Field operator where zero-length fields would
6545 an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length
6547 field declarations in Field(), BankField(), and IndexField(). BZ 10606.
6549 Implemented a fix for the Load operator, now load the table at the
6551 root. This reverts a change introduced in version 20071019. The table is
6553 loaded at the namespace root even though this goes against the ACPI
6554 specification. This provides compatibility with other ACPI
6556 The ACPI specification will be updated to reflect this in ACPI 4.0. Lin
6559 Fixed a problem where ACPICA would not Load() tables with unusual
6561 Now ignore ACPI table signature for Load() operator. Only "SSDT" is
6562 acceptable to the ACPI spec, but tables are seen with OEMx and null sigs.
6563 Therefore, signature validation is worthless. Apparently MS ACPI accepts
6565 signatures, ACPICA must be compatible. BZ 10454.
6567 Fixed a possible negative array index in AcpiUtValidateException. Added
6569 fields to the exception string arrays to eliminate a -1 subtraction on
6573 Updated the debug tracking macros to reduce overall code and data size.
6574 Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings
6575 instead of pointers to static strings. Jan Beulich and Bob Moore.
6577 Implemented argument count checking in control method invocation via
6578 AcpiEvaluateObject. Now emit an error if too few arguments, warning if
6580 many. This applies only to extern programmatic control method execution,
6582 method-to-method calls within the AML. Lin Ming.
6584 Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is
6586 longer needed, especially with the removal of 16-bit support. It was
6588 mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64
6591 32/64-bit platforms is required.
6593 Added the C const qualifier for appropriate string constants -- mostly
6594 MODULE_NAME and printf format strings. Jan Beulich.
6596 Example Code and Data Size: These are the sizes for the OS-independent
6597 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6598 debug version of the code includes the debug output trace mechanism and
6600 much larger code and data size.
6603 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
6604 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
6606 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
6607 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
6609 2) iASL Compiler/Disassembler and Tools:
6611 Implemented ACPI table revision ID validation in the disassembler. Zero
6613 always invalid. For DSDTs, the ID controls the interpreter integer width.
6615 means 32-bit and this is unusual. 2 or greater is 64-bit.
6617 ----------------------------------------
6618 21 March 2008. Summary of changes for version 20080321:
6620 1) ACPI CA Core Subsystem:
6622 Implemented an additional change to the GPE support in order to suppress
6623 spurious or stray GPEs. The AcpiEvDisableGpe function will now
6625 disable incoming GPEs that are neither enabled nor disabled -- meaning
6627 the GPE is unknown to the system. This should prevent future interrupt
6629 from that GPE. BZ 6217 (Zhang Rui)
6631 Fixed a problem where NULL package elements were not returned to the
6632 AcpiEvaluateObject interface correctly. The element was simply ignored
6633 instead of returning a NULL ACPI_OBJECT package element, potentially
6635 a buffer overflow and/or confusing the caller who expected a fixed number
6637 elements. BZ 10132 (Lin Ming, Bob Moore)
6639 Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word,
6641 Qword), Field, BankField, and IndexField operators when invoked from
6643 an executing control method. In this case, these operators created
6645 nodes that were incorrectly left marked as permanent nodes instead of
6646 temporary nodes. This could cause a problem if there is race condition
6647 between an exiting control method and a running namespace walk. (Reported
6651 Fixed a problem where the CreateField and CreateXXXField operators would
6652 incorrectly allow duplicate names (the name of the field) with no
6656 Implemented several changes for Notify handling. Added support for new
6658 values (ACPI 2.0+) and improved the Notify debug output. Notify on
6659 PowerResource objects is no longer allowed, as per the ACPI
6661 (Bob Moore, Zhang Rui)
6663 All Reference Objects returned via the AcpiEvaluateObject interface are
6665 marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved
6667 NULL objects - either NULL package elements or unresolved named
6670 Fixed a problem where an extraneous debug message was produced for
6672 objects (when debugging enabled). The message "Package List length larger
6673 than NumElements count" is now produced in the correct case, and is now
6675 error message rather than a debug message. Added a debug message for the
6676 opposite case, where NumElements is larger than the Package List (the
6678 will be padded out with NULL elements as per the ACPI spec.)
6680 Implemented several improvements for the output of the ASL "Debug" object
6682 clarify and keep all data for a given object on one output line.
6684 Fixed two size calculation issues with the variable-length Start
6686 resource descriptor.
6688 Example Code and Data Size: These are the sizes for the OS-independent
6689 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6690 debug version of the code includes the debug output trace mechanism and
6692 a much larger code and data size.
6695 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
6696 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
6698 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
6699 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
6701 2) iASL Compiler/Disassembler and Tools:
6703 Fixed a problem with the use of the Switch operator where execution of
6705 containing method by multiple concurrent threads could cause an
6706 AE_ALREADY_EXISTS exception. This is caused by the fact that there is no
6707 actual Switch opcode, it must be simulated with local named temporary
6708 variables and if/else pairs. The solution chosen was to mark any method
6710 uses Switch as Serialized, thus preventing multiple thread entries. BZ
6713 ----------------------------------------
6714 13 February 2008. Summary of changes for version 20080213:
6716 1) ACPI CA Core Subsystem:
6718 Implemented another MS compatibility design change for GPE/Notify
6720 GPEs are now cleared/enabled asynchronously to allow all pending notifies
6722 complete first. It is expected that the OSL will queue the enable request
6723 behind all pending notify requests (may require changes to the local host
6725 in AcpiOsExecute). Alexey Starikovskiy.
6727 Fixed a problem where buffer and package objects passed as arguments to a
6728 control method via the external AcpiEvaluateObject interface could cause
6730 AE_AML_INTERNAL exception depending on the order and type of operators
6731 executed by the target control method.
6733 Fixed a problem where resource descriptor size optimization could cause a
6734 problem when a _CRS resource template is passed to a _SRS method. The
6736 resource template must use the same descriptors (with the same size) as
6737 returned from _CRS. This change affects the following resource
6739 IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ
6742 Fixed a problem where a CopyObject to RegionField, BankField, and
6744 objects did not perform an implicit conversion as it should. These types
6746 retain their initial type permanently as per the ACPI specification.
6748 a CopyObject to all other object types should not perform an implicit
6749 conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388
6751 Fixed a problem with the AcpiGetDevices interface where the mechanism to
6752 match device CIDs did not examine the entire list of available CIDs, but
6753 instead aborted on the first non-matching CID. Andrew Patterson.
6755 Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro
6757 inadvertently changed to return a 16-bit value instead of a 32-bit value,
6758 truncating the upper dword of a 64-bit value. This macro is only used to
6759 display debug output, so no incorrect calculations were made. Also,
6760 reimplemented the macro so that a 64-bit shift is not performed by
6761 inefficient compilers.
6763 Added missing va_end statements that should correspond with each va_start
6766 Example Code and Data Size: These are the sizes for the OS-independent
6767 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6768 debug version of the code includes the debug output trace mechanism and
6770 a much larger code and data size.
6773 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
6774 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
6776 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
6777 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
6779 2) iASL Compiler/Disassembler and Tools:
6781 Implemented full disassembler support for the following new ACPI tables:
6782 BERT, EINJ, and ERST. Implemented partial disassembler support for the
6783 complicated HEST table. These tables support the Windows Hardware Error
6784 Architecture (WHEA).
6786 ----------------------------------------
6787 23 January 2008. Summary of changes for version 20080123:
6789 1) ACPI CA Core Subsystem:
6791 Added the 2008 copyright to all module headers and signons. This affects
6792 virtually every file in the ACPICA core subsystem, the iASL compiler, and
6793 the tools/utilities.
6795 Fixed a problem with the SizeOf operator when used with Package and
6797 objects. These objects have deferred execution for some arguments, and
6799 execution is now completed before the SizeOf is executed. This problem
6801 unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore)
6805 Implemented an enhancement to the interpreter "slack mode". In the
6808 an explicit return or an implicitly returned object from the last
6810 opcode, a control method will now implicitly return an integer of value 0
6812 Microsoft compatibility. (Lin Ming) BZ 392
6814 Fixed a problem with the Load operator where an exception was not
6817 the case where the table is already loaded. (Lin Ming) BZ 463
6819 Implemented support for the use of DDBHandles as an Indexed Reference, as
6821 the ACPI spec. (Lin Ming) BZ 486
6823 Implemented support for UserTerm (Method invocation) for the Unload
6825 as per the ACPI spec. (Lin Ming) BZ 580
6827 Fixed a problem with the LoadTable operator where the OemId and
6829 input strings could cause unexpected failures if they were shorter than
6831 maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576
6833 Implemented support for UserTerm (Method invocation) for the Unload
6835 as per the ACPI spec. (Lin Ming) BZ 580
6837 Implemented header file support for new ACPI tables - BERT, ERST, EINJ,
6839 IBFT, UEFI, WDAT. Disassembler support is forthcoming.
6841 Example Code and Data Size: These are the sizes for the OS-independent
6842 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6843 debug version of the code includes the debug output trace mechanism and
6845 a much larger code and data size.
6848 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
6849 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
6851 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
6852 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
6854 2) iASL Compiler/Disassembler and Tools:
6856 Implemented support in the disassembler for checksum validation on
6858 binary DSDTs and SSDTs. If incorrect, a message is displayed within the
6860 header dump at the start of the disassembly.
6862 Implemented additional debugging information in the namespace listing
6864 created during compilation. In addition to the namespace hierarchy, the
6866 pathname to each namespace object is displayed.
6868 Fixed a problem with the disassembler where invalid ACPI tables could
6870 faults or infinite loops.
6872 Fixed an unexpected parse error when using the optional "parameter types"
6873 list in a control method declaration. (Lin Ming) BZ 397
6875 Fixed a problem where two External declarations with the same name did
6877 cause an error (Lin Ming) BZ 509
6879 Implemented support for full TermArgs (adding Argx, Localx and method
6880 invocation) for the ParameterData parameter to the LoadTable operator.
6884 ----------------------------------------
6885 19 December 2007. Summary of changes for version 20071219:
6887 1) ACPI CA Core Subsystem:
6889 Implemented full support for deferred execution for the TermArg string
6890 arguments for DataTableRegion. This enables forward references and full
6891 operand resolution for the three string arguments. Similar to
6893 deferred argument execution.) Lin Ming. BZ 430
6895 Implemented full argument resolution support for the BankValue argument
6897 BankField. Previously, only constants were supported, now any TermArg may
6899 used. Lin Ming BZ 387, 393
6901 Fixed a problem with AcpiGetDevices where the search of a branch of the
6902 device tree could be terminated prematurely. In accordance with the ACPI
6903 specification, the search down the current branch is terminated if a
6905 is both not present and not functional (instead of just not present.)
6909 Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly
6911 the underlying AML code changed the GPE enable registers. Now, any
6913 incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately
6915 instead of simply ignored. Rui Zhang.
6917 Fixed a problem with Index Fields where the Index register was
6919 limited to a maximum of 32 bits. Now any size may be used.
6921 Fixed a couple memory leaks associated with "implicit return" objects
6923 the AML Interpreter slack mode is enabled. Lin Ming BZ 349
6925 Example Code and Data Size: These are the sizes for the OS-independent
6926 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6927 debug version of the code includes the debug output trace mechanism and
6929 a much larger code and data size.
6932 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
6933 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
6935 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
6936 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
6938 ----------------------------------------
6939 14 November 2007. Summary of changes for version 20071114:
6941 1) ACPI CA Core Subsystem:
6943 Implemented event counters for each of the Fixed Events, the ACPI SCI
6944 (interrupt) itself, and control methods executed. Named
6945 AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively.
6947 should be useful for debugging and statistics.
6949 Implemented a new external interface, AcpiGetStatistics, to retrieve the
6950 contents of the various event counters. Returns the current values for
6951 AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and
6952 AcpiMethodCount. The interface can be expanded in the future if new
6954 are added. Device drivers should use this interface rather than access
6958 Fixed a problem with the FromBCD and ToBCD operators. With some
6960 the ShortDivide function worked incorrectly, causing problems with the
6962 functions with large input values. A truncation from 64-bit to 32-bit
6963 inadvertently occurred. Internal BZ 435. Lin Ming
6965 Fixed a problem with Index references passed as method arguments.
6967 passed as arguments to control methods were dereferenced immediately
6969 control was passed to the called method). The references are now
6971 passed directly to the called method. BZ 5389. Lin Ming
6973 Fixed a problem with CopyObject used in conjunction with the Index
6975 The reference was incorrectly dereferenced before the copy. The reference
6977 now correctly copied. BZ 5391. Lin Ming
6979 Fixed a problem with Control Method references within Package objects.
6981 references are now correctly generated. This completes the package
6982 construction overhaul that began in version 20071019.
6984 Example Code and Data Size: These are the sizes for the OS-independent
6985 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6986 debug version of the code includes the debug output trace mechanism and
6988 a much larger code and data size.
6991 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
6992 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
6994 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
6995 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
6998 2) iASL Compiler/Disassembler and Tools:
7000 The AcpiExec utility now installs handlers for all of the predefined
7001 Operation Region types. New types supported are: PCI_Config, CMOS, and
7004 Fixed a problem with the 64-bit version of AcpiExec where the extended
7006 bit) address fields for the DSDT and FACS within the FADT were not being
7007 used, causing truncation of the upper 32-bits of these addresses. Lin
7011 ----------------------------------------
7012 19 October 2007. Summary of changes for version 20071019:
7014 1) ACPI CA Core Subsystem:
7016 Fixed a problem with the Alias operator when the target of the alias is a
7017 named ASL operator that opens a new scope -- Scope, Device,
7019 Processor, and ThermalZone. In these cases, any children of the original
7020 operator could not be accessed via the alias, potentially causing
7022 AE_NOT_FOUND exceptions. (BZ 9067)
7024 Fixed a problem with the Package operator where all named references were
7025 created as object references and left otherwise unresolved. According to
7027 ACPI specification, a Package can only contain Data Objects or references
7029 control methods. The implication is that named references to Data Objects
7030 (Integer, Buffer, String, Package, BufferField, Field) should be resolved
7031 immediately upon package creation. This is the approach taken with this
7032 change. References to all other named objects (Methods, Devices, Scopes,
7033 etc.) are all now properly created as reference objects. (BZ 5328)
7035 Reverted a change to Notify handling that was introduced in version
7036 20070508. This version changed the Notify handling from asynchronous to
7037 fully synchronous (Device driver Notify handling with respect to the
7039 ASL operator). It was found that this change caused more problems than it
7040 solved and was removed by most users.
7042 Fixed a problem with the Increment and Decrement operators where the type
7044 the target object could be unexpectedly and incorrectly changed. (BZ 353)
7047 Fixed a problem with the Load and LoadTable operators where the table
7048 location within the namespace was ignored. Instead, the table was always
7049 loaded into the root or current scope. Lin Ming.
7051 Fixed a problem with the Load operator when loading a table from a buffer
7052 object. The input buffer was prematurely zeroed and/or deleted. (BZ 577)
7054 Fixed a problem with the Debug object where a store of a DdbHandle
7056 object to the Debug object could cause a fault.
7058 Added a table checksum verification for the Load operator, in the case
7060 the load is from a buffer. (BZ 578).
7062 Implemented additional parameter validation for the LoadTable operator.
7064 length of the input strings SignatureString, OemIdString, and OemTableId
7066 now checked for maximum lengths. (BZ 582) Lin Ming.
7068 Example Code and Data Size: These are the sizes for the OS-independent
7069 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7070 debug version of the code includes the debug output trace mechanism and
7072 a much larger code and data size.
7075 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
7076 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
7078 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
7079 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
7082 2) iASL Compiler/Disassembler:
7084 Fixed a problem where if a single file was specified and the file did not
7085 exist, no error message was emitted. (Introduced with wildcard support in
7088 ----------------------------------------
7089 19 September 2007. Summary of changes for version 20070919:
7091 1) ACPI CA Core Subsystem:
7093 Designed and implemented new external interfaces to install and remove
7094 handlers for ACPI table-related events. Current events that are defined
7096 LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as
7097 they are dynamically loaded and unloaded. See AcpiInstallTableHandler and
7098 AcpiRemoveTableHandler. (Lin Ming and Bob Moore)
7100 Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag
7101 (acpi_serialized option on Linux) could cause some systems to hang during
7102 initialization. (Bob Moore) BZ 8171
7104 Fixed a problem where objects of certain types (Device, ThermalZone,
7105 Processor, PowerResource) can be not found if they are declared and
7106 referenced from within the same control method (Lin Ming) BZ 341
7108 Example Code and Data Size: These are the sizes for the OS-independent
7109 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7110 debug version of the code includes the debug output trace mechanism and
7112 a much larger code and data size.
7115 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
7116 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
7118 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
7119 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
7122 2) iASL Compiler/Disassembler:
7124 Implemented support to allow multiple files to be compiled/disassembled
7127 single invocation. This includes command line wildcard support for both
7129 Windows and Unix versions of the compiler. This feature simplifies the
7130 disassembly and compilation of multiple ACPI tables in a single
7133 ----------------------------------------
7134 08 May 2007. Summary of changes for version 20070508:
7136 1) ACPI CA Core Subsystem:
7138 Implemented a Microsoft compatibility design change for the handling of
7140 Notify AML operator. Previously, notify handlers were dispatched and
7141 executed completely asynchronously in a deferred thread. The new design
7142 still executes the notify handlers in a different thread, but the
7144 thread that executed the Notify() now waits at a synchronization point
7146 the notify handler to complete. Some machines depend on a synchronous
7148 operator in order to operate correctly.
7150 Implemented support to allow Package objects to be passed as method
7151 arguments to the external AcpiEvaluateObject interface. Previously, this
7152 would return the AE_NOT_IMPLEMENTED exception. This feature had not been
7153 implemented since there were no reserved control methods that required it
7156 Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs
7158 contained invalid non-zero values in reserved fields could cause later
7159 failures because these fields have meaning in later revisions of the
7161 For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The
7163 are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.)
7165 Fixed a problem where the Global Lock handle was not properly updated if
7167 thread that acquired the Global Lock via executing AML code then
7169 to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by
7173 Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list
7174 could be corrupted if the interrupt being removed was at the head of the
7175 list. Reported by Linn Crosetto.
7177 Example Code and Data Size: These are the sizes for the OS-independent
7178 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7179 debug version of the code includes the debug output trace mechanism and
7181 a much larger code and data size.
7184 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
7185 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
7187 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
7188 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
7190 ----------------------------------------
7191 20 March 2007. Summary of changes for version 20070320:
7193 1) ACPI CA Core Subsystem:
7195 Implemented a change to the order of interpretation and evaluation of AML
7196 operand objects within the AML interpreter. The interpreter now evaluates
7197 operands in the order that they appear in the AML stream (and the
7198 corresponding ASL code), instead of in the reverse order (after the
7200 operand list has been parsed). The previous behavior caused several
7202 incompatibilities with the Microsoft AML interpreter as well as being
7203 somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov.
7205 Implemented a change to the ACPI Global Lock support. All interfaces to
7207 global lock now allow the same thread to acquire the lock multiple times.
7208 This affects the AcpiAcquireGlobalLock external interface to the global
7210 as well as the internal use of the global lock to support AML fields -- a
7211 control method that is holding the global lock can now simultaneously
7213 AML fields that require global lock protection. Previously, in both
7215 this would have resulted in an AE_ALREADY_ACQUIRED exception. The change
7217 AcpiAcquireGlobalLock is of special interest to drivers for the Embedded
7218 Controller. There is no change to the behavior of the AML Acquire
7220 as this can already be used to acquire a mutex multiple times by the same
7221 thread. BZ 8066. With assistance from Alexey Starikovskiy.
7223 Fixed a problem where invalid objects could be referenced in the AML
7224 Interpreter after error conditions. During operand evaluation, ensure
7226 the internal "Return Object" field is cleared on error and only valid
7227 pointers are stored there. Caused occasional access to deleted objects
7229 resulted in "large reference count" warning messages. Valery Podrezov.
7231 Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur
7233 deeply nested control method invocations. BZ 7873, local BZ 487. Valery
7236 Fixed an internal problem with the handling of result objects on the
7237 interpreter result stack. BZ 7872. Valery Podrezov.
7239 Removed obsolete code that handled the case where AML_NAME_OP is the
7241 of a reference (Reference.Opcode). This code was no longer necessary. BZ
7242 7874. Valery Podrezov.
7244 Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This
7247 remnant from the previously discontinued 16-bit support.
7249 Example Code and Data Size: These are the sizes for the OS-independent
7250 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7251 debug version of the code includes the debug output trace mechanism and
7253 a much larger code and data size.
7256 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
7257 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
7259 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
7260 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
7262 ----------------------------------------
7263 26 January 2007. Summary of changes for version 20070126:
7265 1) ACPI CA Core Subsystem:
7267 Added the 2007 copyright to all module headers and signons. This affects
7268 virtually every file in the ACPICA core subsystem, the iASL compiler, and
7271 Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable
7272 during a table load. A bad pointer was passed in the case where the DSDT
7274 overridden, causing a fault in this case.
7276 Example Code and Data Size: These are the sizes for the OS-independent
7277 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7278 debug version of the code includes the debug output trace mechanism and
7280 a much larger code and data size.
7283 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
7284 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
7286 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
7287 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
7289 ----------------------------------------
7290 15 December 2006. Summary of changes for version 20061215:
7292 1) ACPI CA Core Subsystem:
7294 Support for 16-bit ACPICA has been completely removed since it is no
7296 necessary and it clutters the code. All 16-bit macros, types, and
7297 conditional compiles have been removed, cleaning up and simplifying the
7299 across the entire subsystem. DOS support is no longer needed since the
7300 bootable Linux firmware kit is now available.
7302 The handler for the Global Lock is now removed during AcpiTerminate to
7303 enable a clean subsystem restart, via the implementation of the
7304 AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz,
7307 Implemented enhancements to the multithreading support within the
7309 to enable improved multithreading debugging and evaluation of the
7313 Debugger: Enhanced the Statistics/Memory command to emit the total
7315 memory used during the execution, as well as the maximum memory consumed
7317 each of the various object types. (Valery Podrezov)
7319 Example Code and Data Size: These are the sizes for the OS-independent
7320 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7321 debug version of the code includes the debug output trace mechanism and
7323 a much larger code and data size.
7326 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
7327 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
7329 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
7330 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
7333 2) iASL Compiler/Disassembler and Tools:
7335 AcpiExec: Implemented a new option (-m) to display full memory use
7336 statistics upon subsystem/program termination. (Valery Podrezov)
7338 ----------------------------------------
7339 09 November 2006. Summary of changes for version 20061109:
7341 1) ACPI CA Core Subsystem:
7343 Optimized the Load ASL operator in the case where the source operand is
7345 operation region. Simply map the operation region memory, instead of
7346 performing a bytewise read. (Region must be of type SystemMemory, see
7349 Fixed the Load ASL operator for the case where the source operand is a
7350 region field. A buffer object is also allowed as the source operand. BZ
7353 Fixed a problem where the Load ASL operator allowed the source operand to
7355 an operation region of any type. It is now restricted to regions of type
7356 SystemMemory, as per the ACPI specification. BZ 481
7358 Additional cleanup and optimizations for the new Table Manager code.
7360 AcpiEnable will now fail if all of the required ACPI tables are not
7362 (FADT, FACS, DSDT). BZ 477
7364 Added #pragma pack(8/4) to acobject.h to ensure that the structures in
7366 header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been
7367 manually optimized to be aligned and will not work if it is byte-packed.
7369 Example Code and Data Size: These are the sizes for the OS-independent
7370 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7371 debug version of the code includes the debug output trace mechanism and
7373 a much larger code and data size.
7376 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
7377 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
7379 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
7380 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
7383 2) iASL Compiler/Disassembler and Tools:
7385 Fixed a problem where the presence of the _OSI predefined control method
7386 within complex expressions could cause an internal compiler error.
7388 AcpiExec: Implemented full region support for multiple address spaces.
7389 SpaceId is now part of the REGION object. BZ 429
7391 ----------------------------------------
7392 11 October 2006. Summary of changes for version 20061011:
7394 1) ACPI CA Core Subsystem:
7396 Completed an AML interpreter performance enhancement for control method
7397 execution. Previously a 2-pass parse/execution, control methods are now
7398 completely parsed and executed in a single pass. This improves overall
7399 interpreter performance by ~25%, reduces code size, and reduces CPU stack
7400 use. (Valery Podrezov + interpreter changes in version 20051202 that
7401 eliminated namespace loading during the pass one parse.)
7403 Implemented _CID support for PCI Root Bridge detection. If the _HID does
7405 match the predefined PCI Root Bridge IDs, the _CID list (if present) is
7407 obtained and also checked for an ID match.
7409 Implemented additional support for the PCI _ADR execution: upsearch until
7411 device scope is found before executing _ADR. This allows PCI_Config
7412 operation regions to be declared locally within control methods
7416 Fixed a problem with a possible race condition between threads executing
7417 AcpiWalkNamespace and the AML interpreter. This condition was removed by
7418 modifying AcpiWalkNamespace to (by default) ignore all temporary
7420 entries created during any concurrent control method execution. An
7421 additional namespace race condition is known to exist between
7422 AcpiWalkNamespace and the Load/Unload ASL operators and is still under
7425 Restructured the AML ParseLoop function, breaking it into several
7426 subfunctions in order to reduce CPU stack use and improve
7430 AcpiGetHandle: Fix for parameter validation to detect invalid
7432 of prefix handle and pathname. BZ 478
7434 Example Code and Data Size: These are the sizes for the OS-independent
7435 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7436 debug version of the code includes the debug output trace mechanism and
7438 a much larger code and data size.
7441 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
7442 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
7444 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
7445 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
7447 2) iASL Compiler/Disassembler and Tools:
7449 Ported the -g option (get local ACPI tables) to the new ACPICA Table
7451 to restore original behavior.
7453 ----------------------------------------
7454 27 September 2006. Summary of changes for version 20060927:
7456 1) ACPI CA Core Subsystem:
7458 Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister.
7459 These functions now use a spinlock for mutual exclusion and the interrupt
7460 level indication flag is not needed.
7462 Fixed a problem with the Global Lock where the lock could appear to be
7463 obtained before it is actually obtained. The global lock semaphore was
7464 inadvertently created with one unit instead of zero units. (BZ 464)
7468 Fixed a possible memory leak and fault in AcpiExResolveObjectToValue
7470 a read from a buffer or region field. (BZ 458) Fiodor Suietov.
7472 Example Code and Data Size: These are the sizes for the OS-independent
7473 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7474 debug version of the code includes the debug output trace mechanism and
7476 a much larger code and data size.
7479 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
7480 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
7482 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
7483 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
7486 2) iASL Compiler/Disassembler and Tools:
7488 Fixed a compilation problem with the pre-defined Resource Descriptor
7490 names where an "object does not exist" error could be incorrectly
7492 if the parent ResourceTemplate pathname places the template within a
7493 different namespace scope than the current scope. (BZ 7212)
7495 Fixed a problem where the compiler could hang after syntax errors
7497 in an ElseIf construct. (BZ 453)
7499 Fixed a problem with the AmlFilename parameter to the DefinitionBlock()
7500 operator. An incorrect output filename was produced when this parameter
7502 a null string (""). Now, the original input filename is used as the AML
7503 output filename, with an ".aml" extension.
7505 Implemented a generic batch command mode for the AcpiExec utility
7507 any AML debugger command) (Valery Podrezov).
7509 ----------------------------------------
7510 12 September 2006. Summary of changes for version 20060912:
7512 1) ACPI CA Core Subsystem:
7514 Enhanced the implementation of the "serialized mode" of the interpreter
7515 (enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is
7516 specified, instead of creating a serialization semaphore per control
7518 the interpreter lock is simply no longer released before a blocking
7519 operation during control method execution. This effectively makes the AML
7520 Interpreter single-threaded. The overhead of a semaphore per-method is
7523 Fixed a regression where an error was no longer emitted if a control
7525 attempts to create 2 objects of the same name. This once again returns
7526 AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism
7528 will dynamically serialize the control method to possible prevent future
7531 Integrated a fix for a problem with PCI Express HID detection in the PCI
7532 Config Space setup procedure. (BZ 7145)
7534 Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the
7535 AcpiHwInitialize function - the FADT registers are now validated when the
7538 Added two new warnings during FADT verification - 1) if the FADT is
7540 than the largest known FADT version, and 2) if there is a mismatch
7543 32-bit block address and the 64-bit X counterpart (when both are non-
7546 Example Code and Data Size: These are the sizes for the OS-independent
7547 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7548 debug version of the code includes the debug output trace mechanism and
7550 a much larger code and data size.
7553 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
7554 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
7556 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
7557 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
7560 2) iASL Compiler/Disassembler and Tools:
7562 Fixed a problem with the implementation of the Switch() operator where
7564 temporary variable was declared too close to the actual Switch, instead
7566 at method level. This could cause a problem if the Switch() operator is
7567 within a while loop, causing an error on the second iteration. (BZ 460)
7569 Disassembler - fix for error emitted for unknown type for target of scope
7570 operator. Now, ignore it and continue.
7572 Disassembly of an FADT now verifies the input FADT and reports any errors
7573 found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs.
7575 Disassembly of raw data buffers with byte initialization data now
7577 each output line with the current buffer offset.
7579 Disassembly of ASF! table now includes all variable-length data fields at
7580 the end of some of the subtables.
7582 The disassembler now emits a comment if a buffer appears to be a
7583 ResourceTemplate, but cannot be disassembled as such because the EndTag
7585 not appear at the very end of the buffer.
7587 AcpiExec - Added the "-t" command line option to enable the serialized
7589 of the AML interpreter.
7591 ----------------------------------------
7592 31 August 2006. Summary of changes for version 20060831:
7594 1) ACPI CA Core Subsystem:
7596 Miscellaneous fixes for the Table Manager:
7597 - Correctly initialize internal common FADT for all 64-bit "X" fields
7598 - Fixed a couple table mapping issues during table load
7599 - Fixed a couple alignment issues for IA64
7600 - Initialize input array to zero in AcpiInitializeTables
7601 - Additional parameter validation for AcpiGetTable, AcpiGetTableHeader,
7604 Change for GPE support: when a "wake" GPE is received, all wake GPEs are
7606 immediately disabled to prevent the waking GPE from firing again and to
7607 prevent other wake GPEs from interrupting the wake process.
7609 Added the AcpiGpeCount global that tracks the number of processed GPEs,
7611 be used for debugging systems with a large number of ACPI interrupts.
7613 Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in
7614 both the ACPICA headers and the disassembler.
7616 Example Code and Data Size: These are the sizes for the OS-independent
7617 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7618 debug version of the code includes the debug output trace mechanism and
7620 a much larger code and data size.
7623 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
7624 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
7626 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
7627 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
7630 2) iASL Compiler/Disassembler and Tools:
7632 Disassembler support for the DMAR ACPI table.
7634 ----------------------------------------
7635 23 August 2006. Summary of changes for version 20060823:
7637 1) ACPI CA Core Subsystem:
7639 The Table Manager component has been completely redesigned and
7640 reimplemented. The new design is much simpler, and reduces the overall
7642 and data size of the kernel-resident ACPICA by approximately 5%. Also, it
7644 now possible to obtain the ACPI tables very early during kernel
7645 initialization, even before dynamic memory management is initialized.
7646 (Alexey Starikovskiy, Fiodor Suietov, Bob Moore)
7648 Obsolete ACPICA interfaces:
7650 - AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel
7653 - AcpiLoadTable: Not needed.
7654 - AcpiUnloadTable: Not needed.
7656 New ACPICA interfaces:
7658 - AcpiInitializeTables: Must be called before the table manager can be
7660 - AcpiReallocateRootTable: Used to transfer the root table to dynamically
7661 allocated memory after it becomes available.
7662 - AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI
7666 Other ACPICA changes:
7668 - AcpiGetTableHeader returns the actual mapped table header, not a copy.
7670 AcpiOsUnmapMemory to free this mapping.
7671 - AcpiGetTable returns the actual mapped table. The mapping is managed
7672 internally and must not be deleted by the caller. Use of this interface
7673 causes no additional dynamic memory allocation.
7674 - AcpiFindRootPointer: Support for physical addressing has been
7676 it appeared to be unused.
7677 - The interface to AcpiOsMapMemory has changed to be consistent with the
7678 other allocation interfaces.
7679 - The interface to AcpiOsGetRootPointer has changed to eliminate
7682 - ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on
7684 bit platforms. Was previously 64 bits on all platforms.
7685 - The interface to the ACPI Global Lock acquire/release macros have
7687 slightly since ACPICA no longer keeps a local copy of the FACS with a
7688 constructed pointer to the actual global lock.
7690 Porting to the new table manager:
7692 - AcpiInitializeTables: Must be called once, and can be called anytime
7693 during the OS initialization process. It allows the host to specify an
7695 of memory to be used to store the internal version of the RSDT/XSDT (root
7696 table). This allows the host to access ACPI tables before memory
7698 is initialized and running.
7699 - AcpiReallocateRootTable: Can be called after memory management is
7701 to copy the root table to a dynamically allocated array, freeing up the
7702 scratch memory specified in the call to AcpiInitializeTables.
7703 - AcpiSubsystemInitialize: This existing interface is independent of the
7704 Table Manager, and does not have to be called before the Table Manager
7706 be used, it only must be called before the rest of ACPICA can be used.
7707 - ACPI Tables: Some changes have been made to the names and structure of
7709 actbl.h and actbl1.h header files and may require changes to existing
7711 For example, bitfields have been completely removed because of their lack
7713 portability across C compilers.
7714 - Update interfaces to the Global Lock acquire/release macros if local
7715 versions are used. (see acwin.h)
7717 Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c
7721 Example Code and Data Size: These are the sizes for the OS-independent
7722 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7723 debug version of the code includes the debug output trace mechanism and
7725 a much larger code and data size.
7728 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
7729 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
7731 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
7732 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
7735 2) iASL Compiler/Disassembler and Tools:
7737 No changes for this release.
7739 ----------------------------------------
7740 21 July 2006. Summary of changes for version 20060721:
7742 1) ACPI CA Core Subsystem:
7744 The full source code for the ASL test suite used to validate the iASL
7745 compiler and the ACPICA core subsystem is being released with the ACPICA
7746 source for the first time. The source is contained in a separate package
7748 consists of over 1100 files that exercise all ASL/AML operators. The
7750 should appear on the Intel/ACPI web site shortly. (Valery Podrezov,
7754 Completed a new design and implementation for support of the ACPI Global
7755 Lock. On the OS side, the global lock is now treated as a standard AML
7756 mutex. Previously, multiple OS threads could "acquire" the global lock
7757 simultaneously. However, this could cause the BIOS to be starved out of
7759 lock - especially in cases such as the Embedded Controller driver where
7760 there is a tight coupling between the OS and the BIOS.
7762 Implemented an optimization for the ACPI Global Lock interrupt mechanism.
7763 The Global Lock interrupt handler no longer queues the execution of a
7764 separate thread to signal the global lock semaphore. Instead, the
7766 is signaled directly from the interrupt handler.
7768 Implemented support within the AML interpreter for package objects that
7769 contain a larger AML length (package list length) than the package
7771 count. In this case, the length of the package is truncated to match the
7772 package element count. Some BIOS code apparently modifies the package
7774 on the fly, and this change supports this behavior. Provides
7776 with the MS AML interpreter. (With assistance from Fiodor Suietov)
7778 Implemented a temporary fix for the BankValue parameter of a Bank Field
7780 support all constant values, now including the Zero and One opcodes.
7781 Evaluation of this parameter must eventually be converted to a full
7783 evaluation. A not-implemented error is now returned (temporarily) for
7785 constant values for this parameter.
7787 Fixed problem reports (Fiodor Suietov) integrated:
7788 - Fix for premature object deletion after CopyObject on Operation Region
7792 Example Code and Data Size: These are the sizes for the OS-independent
7793 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7794 debug version of the code includes the debug output trace mechanism and
7796 a much larger code and data size.
7799 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total
7800 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total
7802 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
7803 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
7806 2) iASL Compiler/Disassembler and Tools:
7808 No changes for this release.
7810 ----------------------------------------
7811 07 July 2006. Summary of changes for version 20060707:
7813 1) ACPI CA Core Subsystem:
7815 Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers
7816 that do not allow the initialization of address pointers within packed
7817 structures - even though the hardware itself may support misaligned
7818 transfers. Some of the debug data structures are packed by default to
7821 Added an error message for the case where AcpiOsGetThreadId() returns
7823 A non-zero value is required by the core ACPICA code to ensure the proper
7824 operation of AML mutexes and recursive control methods.
7826 The DSDT is now the only ACPI table that determines whether the AML
7827 interpreter is in 32-bit or 64-bit mode. Not really a functional change,
7829 the hooks for per-table 32/64 switching have been removed from the code.
7831 clarification to the ACPI specification is forthcoming in ACPI 3.0B.
7833 Fixed a possible leak of an OwnerID in the error path of
7834 AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID
7835 deletion to a single place in AcpiTbUninstallTable to correct possible
7837 when using the AcpiTbDeleteTablesByType interface (with assistance from
7840 Fixed a problem with Serialized control methods where the semaphore
7841 associated with the method could be over-signaled after multiple method
7844 Fixed two issues with the locking of the internal namespace data
7846 Both the Unload() operator and AcpiUnloadTable interface now lock the
7847 namespace during the namespace deletion associated with the table unload
7848 (with assistance from Linn Crosetto.)
7850 Fixed problem reports (Valery Podrezov) integrated:
7851 - Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426)
7853 Fixed problem reports (Fiodor Suietov) integrated:
7854 - Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369)
7855 - On Address Space handler deletion, needless deactivation call (BZ 374)
7856 - AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ
7858 - Possible memory leak, Notify sub-objects of Processor, Power,
7861 - AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378)
7862 - Minimum Length of RSDT should be validated (BZ 379)
7863 - AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no
7865 - AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type
7869 Example Code and Data Size: These are the sizes for the OS-independent
7870 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7871 debug version of the code includes the debug output trace mechanism and
7873 a much larger code and data size.
7876 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
7877 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
7879 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
7880 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
7883 2) iASL Compiler/Disassembler and Tools:
7885 Fixed problem reports:
7886 Compiler segfault when ASL contains a long (>1024) String declaration (BZ
7889 ----------------------------------------
7890 23 June 2006. Summary of changes for version 20060623:
7892 1) ACPI CA Core Subsystem:
7894 Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This
7895 allows the type to be customized to the host OS for improved efficiency
7896 (since a spinlock is usually a very small object.)
7898 Implemented support for "ignored" bits in the ACPI registers. According
7900 the ACPI specification, these bits should be preserved when writing the
7901 registers via a read/modify/write cycle. There are 3 bits preserved in
7903 manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11].
7905 Implemented the initial deployment of new OSL mutex interfaces. Since
7907 host operating systems have separate mutex and semaphore objects, this
7908 feature was requested. The base code now uses mutexes (and the new mutex
7909 interfaces) wherever a binary semaphore was used previously. However, for
7910 the current release, the mutex interfaces are defined as macros to map
7912 to the existing semaphore interfaces. Therefore, no OSL changes are
7914 at this time. (See acpiosxf.h)
7916 Fixed several problems with the support for the control method SyncLevel
7917 parameter. The SyncLevel now works according to the ACPI specification
7919 in concert with the Mutex SyncLevel parameter, since the current
7921 is a property of the executing thread. Mutual exclusion for control
7923 is now implemented with a mutex instead of a semaphore.
7925 Fixed three instances of the use of the C shift operator in the bitfield
7926 support code (exfldio.c) to avoid the use of a shift value larger than
7928 target data width. The behavior of C compilers is undefined in this case
7930 can cause unpredictable results, and therefore the case must be detected
7932 avoided. (Fiodor Suietov)
7934 Added an info message whenever an SSDT or OEM table is loaded dynamically
7935 via the Load() or LoadTable() ASL operators. This should improve
7937 capability since it will show exactly what tables have been loaded
7939 the tables present in the RSDT/XSDT.)
7941 Example Code and Data Size: These are the sizes for the OS-independent
7942 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7943 debug version of the code includes the debug output trace mechanism and
7945 a much larger code and data size.
7948 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
7949 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
7951 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
7952 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
7955 2) iASL Compiler/Disassembler and Tools:
7957 No changes for this release.
7959 ----------------------------------------
7960 08 June 2006. Summary of changes for version 20060608:
7962 1) ACPI CA Core Subsystem:
7964 Converted the locking mutex used for the ACPI hardware to a spinlock.
7966 change should eliminate all problems caused by attempting to acquire a
7967 semaphore at interrupt level, and it means that all ACPICA external
7968 interfaces that directly access the ACPI hardware can be safely called
7970 interrupt level. OSL code that implements the semaphore interfaces should
7972 able to eliminate any workarounds for being called at interrupt level.
7974 Fixed a regression introduced in 20060526 where the ACPI device
7975 initialization could be prematurely aborted with an AE_NOT_FOUND if a
7977 did not have an optional _INI method.
7979 Fixed an IndexField issue where a write to the Data Register should be
7980 limited in size to the AccessSize (width) of the IndexField itself. (BZ
7984 Fixed problem reports (Valery Podrezov) integrated:
7985 - Allow store of ThermalZone objects to Debug object (BZ 5369/5370)
7987 Fixed problem reports (Fiodor Suietov) integrated:
7988 - AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364)
7990 Removed four global mutexes that were obsolete and were no longer being
7993 Example Code and Data Size: These are the sizes for the OS-independent
7994 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7995 debug version of the code includes the debug output trace mechanism and
7997 a much larger code and data size.
8000 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
8001 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
8003 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
8004 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
8007 2) iASL Compiler/Disassembler and Tools:
8009 Fixed a fault when using -g option (get tables from registry) on Windows
8012 Fixed problem reports integrated:
8013 - Generate error if CreateField NumBits parameter is zero. (BZ 405)
8014 - Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor
8016 - Global table revision override (-r) is ignored (BZ 413)
8018 ----------------------------------------
8019 26 May 2006. Summary of changes for version 20060526:
8021 1) ACPI CA Core Subsystem:
8023 Restructured, flattened, and simplified the internal interfaces for
8024 namespace object evaluation - resulting in smaller code, less CPU stack
8026 and fewer interfaces. (With assistance from Mikhail Kouzmich)
8028 Fixed a problem with the CopyObject operator where the first parameter
8030 not typed correctly for the parser, interpreter, compiler, and
8032 Caused various errors and unexpected behavior.
8034 Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits
8035 produced incorrect results with some C compilers. Since the behavior of C
8036 compilers when the shift value is larger than the datatype width is
8037 apparently not well defined, the interpreter now detects this condition
8039 simply returns zero as expected in all such cases. (BZ 395)
8041 Fixed problem reports (Valery Podrezov) integrated:
8042 - Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329)
8043 - Allow interpreter to handle nested method declarations (BZ 5361)
8045 Fixed problem reports (Fiodor Suietov) integrated:
8046 - AcpiTerminate doesn't free debug memory allocation list objects (BZ
8048 - After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ
8050 - AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357)
8051 - Resource Manager should return AE_TYPE for non-device objects (BZ 358)
8052 - Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359)
8053 - Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360)
8054 - Incomplete cleanup branch in AcpiPsParseAml (BZ 361)
8055 - Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362)
8056 - AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ
8058 - Status of the Global Initialization Handler call not used (BZ 366)
8059 - Incorrect object parameter to Global Initialization Handler (BZ 367)
8061 Example Code and Data Size: These are the sizes for the OS-independent
8062 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8063 debug version of the code includes the debug output trace mechanism and
8065 a much larger code and data size.
8068 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
8069 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
8071 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
8072 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
8075 2) iASL Compiler/Disassembler and Tools:
8077 Modified the parser to allow the names IO, DMA, and IRQ to be used as
8078 namespace identifiers with no collision with existing resource descriptor
8079 macro names. This provides compatibility with other ASL compilers and is
8080 most useful for disassembly/recompilation of existing tables without
8082 errors. (With assistance from Thomas Renninger)
8084 Disassembler: fixed an incorrect disassembly problem with the
8085 DataTableRegion and CopyObject operators. Fixed a possible fault during
8086 disassembly of some Alias operators.
8088 ----------------------------------------
8089 12 May 2006. Summary of changes for version 20060512:
8091 1) ACPI CA Core Subsystem:
8093 Replaced the AcpiOsQueueForExecution interface with a new interface named
8094 AcpiOsExecute. The major difference is that the new interface does not
8096 a Priority parameter, this appeared to be useless and has been replaced
8099 Type parameter. The Type tells the host what type of execution is being
8100 requested, such as global lock handler, notify handler, GPE handler, etc.
8101 This allows the host to queue and execute the request as appropriate for
8103 request type, possibly using different work queues and different
8105 for the various request types. This enables fixes for multithreading
8106 deadlock problems such as BZ #5534, and will require changes to all
8108 OS interface layers. (Alexey Starikovskiy and Bob Moore)
8110 Fixed a possible memory leak associated with the support for the so-
8112 "implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor
8115 Fixed a problem with the Load() operator where a table load from an
8116 operation region could overwrite an internal table buffer by up to 7
8118 and cause alignment faults on IPF systems. (With assistance from Luming
8121 Example Code and Data Size: These are the sizes for the OS-independent
8122 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8123 debug version of the code includes the debug output trace mechanism and
8125 a much larger code and data size.
8128 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
8129 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
8131 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
8132 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
8136 2) iASL Compiler/Disassembler and Tools:
8138 Disassembler: Implemented support to cross reference the internal
8140 and automatically generate ASL External() statements for symbols not
8142 within the current table being disassembled. This will simplify the
8143 disassembly and recompilation of interdependent tables such as SSDTs
8145 these statements will no longer have to be added manually.
8147 Disassembler: Implemented experimental support to automatically detect
8148 invocations of external control methods and generate appropriate
8150 statements. This is problematic because the AML cannot be correctly
8152 until the number of arguments for each control method is known.
8154 standalone method invocations and invocations as the source operand of a
8155 Store() statement are supported.
8157 Disassembler: Implemented support for the ASL pseudo-operators LNotEqual,
8158 LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()),
8159 LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code
8160 more readable and likely closer to the original ASL source.
8162 ----------------------------------------
8163 21 April 2006. Summary of changes for version 20060421:
8165 1) ACPI CA Core Subsystem:
8167 Removed a device initialization optimization introduced in 20051216 where
8168 the _STA method was not run unless an _INI was also present for the same
8169 device. This optimization could cause problems because it could allow
8171 methods to be run within a not-present device subtree. (If a not-present
8172 device had no _INI, _STA would not be run, the not-present status would
8174 be discovered, and the children of the device would be incorrectly
8177 Implemented a new _STA optimization where namespace subtrees that do not
8178 contain _INI are identified and ignored during device initialization.
8179 Selectively running _STA can significantly improve boot time on large
8180 machines (with assistance from Len Brown.)
8182 Implemented support for the device initialization case where the returned
8183 _STA flags indicate a device not-present but functioning. In this case,
8185 is not run, but the device children are examined for presence, as per the
8188 Implemented an additional change to the IndexField support in order to
8189 conform to MS behavior. The value written to the Index Register is not
8190 simply a byte offset, it is a byte offset in units of the access width of
8191 the parent Index Field. (Fiodor Suietov)
8193 Defined and deployed a new OSL interface, AcpiOsValidateAddress. This
8194 interface is called during the creation of all AML operation regions, and
8195 allows the host OS to exert control over what addresses it will allow the
8196 AML code to access. Operation Regions whose addresses are disallowed will
8197 cause a runtime exception when they are actually accessed (will not
8199 or abort table loading.) See oswinxf or osunixxf for an example
8202 Defined and deployed a new OSL interface, AcpiOsValidateInterface. This
8203 interface allows the host OS to match the various "optional"
8204 interface/behavior strings for the _OSI predefined control method as
8205 appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf
8206 for an example implementation.
8208 Restructured and corrected various problems in the exception handling
8210 paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod
8211 (with assistance from Takayoshi Kochi.)
8213 Modified the Linux source converter to ignore quoted string literals
8215 converting identifiers from mixed to lower case. This will correct
8217 with the disassembler and other areas where such strings must not be
8220 The ACPI_FUNCTION_* macros no longer require quotes around the function
8221 name. This allows the Linux source converter to convert the names, now
8223 the converter ignores quoted strings.
8225 Example Code and Data Size: These are the sizes for the OS-independent
8226 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8227 debug version of the code includes the debug output trace mechanism and
8229 a much larger code and data size.
8233 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
8234 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
8236 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
8237 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
8240 2) iASL Compiler/Disassembler and Tools:
8242 Implemented 3 new warnings for iASL, and implemented multiple warning
8246 1) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is
8248 WAIT_FOREVER (0xFFFF) and the code does not examine the return value to
8249 check for the possible timeout, a warning is issued.
8251 2) Useless operators: If an ASL operator does not specify an optional
8253 operand and it also does not use the function return value from the
8254 operator, a warning is issued since the operator effectively does
8257 3) Unreferenced objects: If a namespace object is created, but never
8258 referenced, a warning is issued. This is a warning level 2 since there
8260 cases where this is ok, such as when a secondary table is loaded that
8262 the unreferenced objects. Even so, care is taken to only flag objects
8264 don't look like they will ever be used. For example, the reserved methods
8265 (starting with an underscore) are usually not referenced because it is
8266 expected that the OS will invoke them.
8268 ----------------------------------------
8269 31 March 2006. Summary of changes for version 20060331:
8271 1) ACPI CA Core Subsystem:
8273 Implemented header file support for the following additional ACPI tables:
8274 ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this
8276 all current and known ACPI tables are now defined in the ACPICA headers
8278 are available for use by device drivers and other software.
8280 Implemented support to allow tables that contain ACPI names with invalid
8281 characters to be loaded. Previously, this would cause the table load to
8282 fail, but since there are several known cases of such tables on existing
8283 machines, this change was made to enable ACPI support for them. Also,
8285 matches the behavior of the Microsoft ACPI implementation.
8287 Fixed a couple regressions introduced during the memory optimization in
8289 20060317 release. The namespace node definition required additional
8290 reorganization and an internal datatype that had been changed to 8-bit
8292 restored to 32-bit. (Valery Podrezov)
8294 Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState
8295 could be passed through to AcpiOsReleaseObject which is unexpected. Such
8296 null pointers are now trapped and ignored, matching the behavior of the
8297 previous implementation before the deployment of AcpiOsReleaseObject.
8298 (Valery Podrezov, Fiodor Suietov)
8300 Fixed a memory mapping leak during the deletion of a SystemMemory
8302 region where a cached memory mapping was not deleted. This became a
8303 noticeable problem for operation regions that are defined within
8305 used control methods. (Dana Meyers)
8307 Reorganized the ACPI table header files into two main files: one for the
8308 ACPI tables consumed by the ACPICA core, and another for the
8310 ACPI tables that are consumed by the drivers and other software. The
8312 FADT definitions were merged into one common section and three different
8313 tables (ACPI 1.0, 1.0+, and 2.0)
8315 Example Code and Data Size: These are the sizes for the OS-independent
8316 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8317 debug version of the code includes the debug output trace mechanism and
8319 a much larger code and data size.
8322 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
8323 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
8325 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
8326 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
8329 2) iASL Compiler/Disassembler and Tools:
8331 Disassembler: Implemented support to decode and format all non-AML ACPI
8332 tables (tables other than DSDTs and SSDTs.) This includes the new tables
8333 added to the ACPICA headers, therefore all current and known ACPI tables
8337 Disassembler: The change to allow ACPI names with invalid characters also
8338 enables the disassembly of such tables. Invalid characters within names
8340 changed to '*' to make the name printable; the iASL compiler will still
8341 generate an error for such names, however, since this is an invalid ACPI
8344 Implemented an option for AcpiXtract (-a) to extract all tables found in
8346 input file. The default invocation extracts only the DSDTs and SSDTs.
8348 Fixed a couple of gcc generation issues for iASL and AcpiExec and added a
8349 makefile for the AcpiXtract utility.
8351 ----------------------------------------
8352 17 March 2006. Summary of changes for version 20060317:
8354 1) ACPI CA Core Subsystem:
8356 Implemented the use of a cache object for all internal namespace nodes.
8357 Since there are about 1000 static nodes in a typical system, this will
8358 decrease memory use for cache implementations that minimize per-
8360 overhead (such as a slab allocator.)
8362 Removed the reference count mechanism for internal namespace nodes, since
8364 was deemed unnecessary. This reduces the size of each namespace node by
8365 about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit
8367 and 32 bytes for the 64-bit case.
8369 Optimized several internal data structures to reduce object size on 64-
8371 platforms by packing data within the 64-bit alignment. This includes the
8372 frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static
8373 instances corresponding to the namespace objects.
8375 Added two new strings for the predefined _OSI method: "Windows 2001.1
8379 Split the allocation tracking mechanism out to a separate file, from
8380 utalloc.c to uttrack.c. This mechanism appears to be only useful for
8381 application-level code. Kernels may wish to not include uttrack.c in
8384 Removed all remnants of the obsolete ACPI_REPORT_* macros and the
8386 code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING
8389 Code and Data Size: These are the sizes for the acpica.lib produced by
8391 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
8393 driver or OSPM code. The debug version of the code includes the debug
8395 trace mechanism and has a much larger code and data size. Note that these
8396 values will vary depending on the efficiency of the compiler and the
8397 compiler options used during generation.
8400 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
8401 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
8403 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
8404 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
8407 2) iASL Compiler/Disassembler and Tools:
8409 Implemented an ANSI C version of the acpixtract utility. This version
8411 automatically extract the DSDT and all SSDTs from the input acpidump text
8412 file and dump the binary output to separate files. It can also display a
8413 summary of the input file including the headers for each table found and
8414 will extract any single ACPI table, with any signature. (See
8415 source/tools/acpixtract)
8417 ----------------------------------------
8418 10 March 2006. Summary of changes for version 20060310:
8420 1) ACPI CA Core Subsystem:
8422 Tagged all external interfaces to the subsystem with the new
8423 ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to
8425 kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL
8426 macro. The default definition is NULL.
8428 Added the ACPI_THREAD_ID type for the return value from
8430 This allows the host to define this as necessary to simplify kernel
8431 integration. The default definition is ACPI_NATIVE_UINT.
8433 Fixed two interpreter problems related to error processing, the deletion
8435 objects, and placing invalid pointers onto the internal operator result
8436 stack. BZ 6028, 6151 (Valery Podrezov)
8438 Increased the reference count threshold where a warning is emitted for
8440 reference counts in order to eliminate unnecessary warnings on systems
8442 large namespaces (especially 64-bit.) Increased the value from 0x400 to
8445 Due to universal disagreement as to the meaning of the 'c' in the
8447 function, the ACPI_MEM_CALLOCATE macro has been renamed to
8448 ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'.
8449 ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and
8452 Code and Data Size: These are the sizes for the acpica.lib produced by
8454 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
8456 driver or OSPM code. The debug version of the code includes the debug
8458 trace mechanism and has a much larger code and data size. Note that these
8459 values will vary depending on the efficiency of the compiler and the
8460 compiler options used during generation.
8463 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
8464 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
8466 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
8467 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
8470 2) iASL Compiler/Disassembler:
8472 Disassembler: implemented support for symbolic resource descriptor
8473 references. If a CreateXxxxField operator references a fixed offset
8476 resource descriptor, a name is assigned to the descriptor and the offset
8478 translated to the appropriate resource tag and pathname. The addition of
8479 this support brings the disassembled code very close to the original ASL
8480 source code and helps eliminate run-time errors when the disassembled
8482 is modified (and recompiled) in such a way as to invalidate the original
8485 Implemented support for a Descriptor Name as the last parameter to the
8487 Register() macro. This parameter was inadvertently left out of the ACPI
8488 specification, and will be added for ACPI 3.0b.
8490 Fixed a problem where the use of the "_OSI" string (versus the full path
8491 "\_OSI") caused an internal compiler error. ("No back ptr to op")
8493 Fixed a problem with the error message that occurs when an invalid string
8495 used for a _HID object (such as one with an embedded asterisk:
8497 The correct message is now displayed.
8499 ----------------------------------------
8500 17 February 2006. Summary of changes for version 20060217:
8502 1) ACPI CA Core Subsystem:
8504 Implemented a change to the IndexField support to match the behavior of
8506 Microsoft AML interpreter. The value written to the Index register is now
8508 byte offset, no longer an index based upon the width of the Data
8510 This should fix IndexField problems seen on some machines where the Data
8511 register is not exactly one byte wide. The ACPI specification will be
8512 clarified on this point.
8514 Fixed a problem where several resource descriptor types could overrun the
8515 internal descriptor buffer due to size miscalculation: VendorShort,
8516 VendorLong, and Interrupt. This was noticed on IA64 machines, but could
8517 affect all platforms.
8519 Fixed a problem where individual resource descriptors were misaligned
8521 the internal buffer, causing alignment faults on IA64 platforms.
8523 Code and Data Size: These are the sizes for the acpica.lib produced by
8525 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
8527 driver or OSPM code. The debug version of the code includes the debug
8529 trace mechanism and has a much larger code and data size. Note that these
8530 values will vary depending on the efficiency of the compiler and the
8531 compiler options used during generation.
8534 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
8535 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
8537 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
8538 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
8541 2) iASL Compiler/Disassembler:
8543 Implemented support for new reserved names: _WDG and _WED are Microsoft
8544 extensions for Windows Instrumentation Management, _TDL is a new ACPI-
8545 defined method (Throttling Depth Limit.)
8547 Fixed a problem where a zero-length VendorShort or VendorLong resource
8548 descriptor was incorrectly emitted as a descriptor of length one.
8550 ----------------------------------------
8551 10 February 2006. Summary of changes for version 20060210:
8553 1) ACPI CA Core Subsystem:
8555 Removed a couple of extraneous ACPI_ERROR messages that appeared during
8556 normal execution. These became apparent after the conversion from
8559 Fixed a problem where the CreateField operator could hang if the BitIndex
8561 NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359)
8563 Fixed a problem where a DeRefOf operation on a buffer object incorrectly
8564 failed with an exception. This also fixes a couple of related RefOf and
8565 DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387)
8567 Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead
8569 AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov,
8573 Implemented a memory cleanup at the end of the execution of each
8575 of an AML While() loop, preventing the accumulation of outstanding
8577 (Valery Podrezov, BZ 5427)
8579 Eliminated a chunk of duplicate code in the object resolution code.
8583 Fixed several warnings during the 64-bit code generation.
8585 The AcpiSrc source code conversion tool now inserts one line of
8587 after an if() statement that is followed immediately by a comment,
8589 readability of the Linux code.
8591 Code and Data Size: The current and previous library sizes for the core
8592 subsystem are shown below. These are the code and data sizes for the
8593 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8595 values do not include any ACPI driver or OSPM code. The debug version of
8597 code includes the debug output trace mechanism and has a much larger code
8598 and data size. Note that these values will vary depending on the
8600 of the compiler and the compiler options used during generation.
8603 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
8604 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
8606 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
8607 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
8610 2) iASL Compiler/Disassembler:
8612 Fixed a problem with the disassembly of a BankField operator with a
8614 expression for the BankValue parameter.
8616 ----------------------------------------
8617 27 January 2006. Summary of changes for version 20060127:
8619 1) ACPI CA Core Subsystem:
8621 Implemented support in the Resource Manager to allow unresolved
8623 references within resource package objects for the _PRT method. This
8625 is in addition to the previously implemented unresolved reference support
8626 within the AML parser. If the interpreter slack mode is enabled, these
8627 unresolved references will be passed through to the caller as a NULL
8631 Implemented and deployed new macros and functions for error and warning
8632 messages across the subsystem. These macros are simpler and generate less
8633 code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION,
8634 ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older
8635 macros remain defined to allow ACPI drivers time to migrate to the new
8638 Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of
8640 Acquire/Release Lock OSL interfaces.
8642 Fixed a problem where Alias ASL operators are sometimes not correctly
8643 resolved, in both the interpreter and the iASL compiler.
8645 Fixed several problems with the implementation of the
8646 ConcatenateResTemplate
8647 ASL operator. As per the ACPI specification, zero length buffers are now
8648 treated as a single EndTag. One-length buffers always cause a fatal
8649 exception. Non-zero length buffers that do not end with a full 2-byte
8651 cause a fatal exception.
8653 Fixed a possible structure overwrite in the AcpiGetObjectInfo external
8654 interface. (With assistance from Thomas Renninger)
8656 Code and Data Size: The current and previous library sizes for the core
8657 subsystem are shown below. These are the code and data sizes for the
8658 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8660 values do not include any ACPI driver or OSPM code. The debug version of
8662 code includes the debug output trace mechanism and has a much larger code
8663 and data size. Note that these values will vary depending on the
8665 of the compiler and the compiler options used during generation.
8668 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
8669 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
8671 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
8672 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
8675 2) iASL Compiler/Disassembler:
8677 Fixed an internal error that was generated for any forward references to
8681 ----------------------------------------
8682 13 January 2006. Summary of changes for version 20060113:
8684 1) ACPI CA Core Subsystem:
8686 Added 2006 copyright to all module headers and signons. This affects
8687 virtually every file in the ACPICA core subsystem, iASL compiler, and the
8690 Enhanced the ACPICA error reporting in order to simplify user migration
8692 the non-debug version of ACPICA. Replaced all instances of the
8693 ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN
8695 levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros,
8696 respectively. This preserves all error and warning messages in the non-
8698 version of the ACPICA code (this has been referred to as the "debug lite"
8699 option.) Over 200 cases were converted to create a total of over 380
8700 error/warning messages across the ACPICA code. This increases the code
8702 data size of the default non-debug version of the code somewhat (about
8704 but all error/warning reporting may be disabled if desired (and code
8705 eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time
8706 configuration option. The size of the debug version of ACPICA remains
8710 Fixed a memory leak within the AML Debugger "Set" command. One object was
8711 not properly deleted for every successful invocation of the command.
8713 Code and Data Size: The current and previous library sizes for the core
8714 subsystem are shown below. These are the code and data sizes for the
8715 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8717 values do not include any ACPI driver or OSPM code. The debug version of
8719 code includes the debug output trace mechanism and has a much larger code
8720 and data size. Note that these values will vary depending on the
8722 of the compiler and the compiler options used during generation.
8725 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
8726 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
8728 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
8729 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
8732 2) iASL Compiler/Disassembler:
8734 The compiler now officially supports the ACPI 3.0a specification that was
8735 released on December 30, 2005. (Specification is available at
8738 ----------------------------------------
8739 16 December 2005. Summary of changes for version 20051216:
8741 1) ACPI CA Core Subsystem:
8743 Implemented optional support to allow unresolved names within ASL Package
8744 objects. A null object is inserted in the package when a named reference
8745 cannot be located in the current namespace. Enabled via the interpreter
8746 slack flag, this should eliminate AE_NOT_FOUND exceptions seen on
8748 that contain such code.
8750 Implemented an optimization to the initialization sequence that can
8752 boot time. During ACPI device initialization, the _STA method is now run
8754 and only if the _INI method exists. The _STA method is used to determine
8756 the device is present; An _INI can only be run if _STA returns present,
8758 it is a waste of time to run the _STA method if the _INI does not exist.
8759 (Prototype and assistance from Dong Wei)
8761 Implemented use of the C99 uintptr_t for the pointer casting macros if it
8763 available in the current compiler. Otherwise, the default (void *) cast
8767 Fixed some possible memory leaks found within the execution path of the
8768 Break, Continue, If, and CreateField operators. (Valery Podrezov)
8770 Fixed a problem introduced in the 20051202 release where an exception is
8771 generated during method execution if a control method attempts to declare
8774 Moved resource descriptor string constants that are used by both the AML
8775 disassembler and AML debugger to the common utilities directory so that
8776 these components are independent.
8778 Implemented support in the AcpiExec utility (-e switch) to globally
8780 exceptions during control method execution (method is not aborted.)
8782 Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix
8785 Code and Data Size: The current and previous library sizes for the core
8786 subsystem are shown below. These are the code and data sizes for the
8787 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8789 values do not include any ACPI driver or OSPM code. The debug version of
8791 code includes the debug output trace mechanism and has a much larger code
8792 and data size. Note that these values will vary depending on the
8794 of the compiler and the compiler options used during generation.
8797 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
8798 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
8800 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
8801 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
8804 2) iASL Compiler/Disassembler:
8806 Fixed a problem where a CPU stack overflow fault could occur if a
8808 method call was made from within a Return statement.
8810 ----------------------------------------
8811 02 December 2005. Summary of changes for version 20051202:
8813 1) ACPI CA Core Subsystem:
8815 Modified the parsing of control methods to no longer create namespace
8816 objects during the first pass of the parse. Objects are now created only
8817 during the execute phase, at the moment the namespace creation operator
8819 encountered in the AML (Name, OperationRegion, CreateByteField, etc.)
8821 should eliminate ALREADY_EXISTS exceptions seen on some machines where
8822 reentrant control methods are protected by an AML mutex. The mutex will
8824 correctly block multiple threads from attempting to create the same
8828 Increased the number of available Owner Ids for namespace object tracking
8829 from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen
8831 some machines with a large number of ACPI tables (either static or
8834 Fixed a problem with the AcpiExec utility where a fault could occur when
8836 -b switch (batch mode) is used.
8838 Enhanced the namespace dump routine to output the owner ID for each
8841 Code and Data Size: The current and previous library sizes for the core
8842 subsystem are shown below. These are the code and data sizes for the
8843 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8845 values do not include any ACPI driver or OSPM code. The debug version of
8847 code includes the debug output trace mechanism and has a much larger code
8848 and data size. Note that these values will vary depending on the
8850 of the compiler and the compiler options used during generation.
8853 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
8854 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
8856 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
8857 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
8860 2) iASL Compiler/Disassembler:
8862 Fixed a parse error during compilation of certain Switch/Case constructs.
8864 simplify the parse, the grammar now allows for multiple Default
8866 and this error is now detected and flagged during the analysis phase.
8868 Disassembler: The disassembly now includes the contents of the original
8869 table header within a comment at the start of the file. This includes the
8870 name and version of the original ASL compiler.
8872 ----------------------------------------
8873 17 November 2005. Summary of changes for version 20051117:
8875 1) ACPI CA Core Subsystem:
8877 Fixed a problem in the AML parser where the method thread count could be
8878 decremented below zero if any errors occurred during the method parse
8880 This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some
8882 This also fixed a related regression with the mechanism that detects and
8883 corrects methods that cannot properly handle reentrancy (related to the
8884 deployment of the new OwnerId mechanism.)
8886 Eliminated the pre-parsing of control methods (to detect errors) during
8887 table load. Related to the problem above, this was causing unwind issues
8889 any errors occurred during the parse, and it seemed to be overkill. A
8891 load should not be aborted if there are problems with any single control
8892 method, thus rendering this feature rather pointless.
8894 Fixed a problem with the new table-driven resource manager where an
8896 buffer overflow could occur for small resource templates.
8898 Implemented a new external interface, AcpiGetVendorResource. This
8900 will find and return a vendor-defined resource descriptor within a _CRS
8902 _PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn
8905 Removed the length limit (200) on string objects as per the upcoming ACPI
8906 3.0A specification. This affects the following areas of the interpreter:
8908 any implicit conversion of a Buffer to a String, 2) a String object
8910 of the ASL Concatentate operator, 3) the String object result of the ASL
8913 Fixed a problem in the Windows OS interface layer (OSL) where a
8915 on a semaphore object would incorrectly timeout. This allows the
8916 multithreading features of the AcpiExec utility to work properly under
8919 Updated the Linux makefiles for the iASL compiler and AcpiExec to include
8920 the recently added file named "utresrc.c".
8922 Code and Data Size: The current and previous library sizes for the core
8923 subsystem are shown below. These are the code and data sizes for the
8924 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8926 values do not include any ACPI driver or OSPM code. The debug version of
8928 code includes the debug output trace mechanism and has a much larger code
8929 and data size. Note that these values will vary depending on the
8931 of the compiler and the compiler options used during generation.
8934 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
8935 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
8937 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
8938 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
8941 2) iASL Compiler/Disassembler:
8943 Removed the limit (200) on string objects as per the upcoming ACPI 3.0A
8944 specification. For the iASL compiler, this means that string literals
8946 the source ASL can be of any length.
8948 Enhanced the listing output to dump the AML code for resource descriptors
8949 immediately after the ASL code for each descriptor, instead of in a block
8951 the end of the entire resource template.
8953 Enhanced the compiler debug output to dump the entire original parse tree
8954 constructed during the parse phase, before any transforms are applied to
8956 tree. The transformed tree is dumped also.
8958 ----------------------------------------
8959 02 November 2005. Summary of changes for version 20051102:
8961 1) ACPI CA Core Subsystem:
8963 Modified the subsystem initialization sequence to improve GPE support.
8965 GPE initialization has been split into two parts in order to defer
8967 of the _PRW methods (Power Resources for Wake) until after the hardware
8969 fully initialized and the SCI handler is installed. This allows the _PRW
8970 methods to access fields protected by the Global Lock. This will fix
8972 where a NO_GLOBAL_LOCK exception has been seen during initialization.
8974 Converted the ACPI internal object disassemble and display code within
8976 AML debugger to fully table-driven operation, reducing code size and
8977 increasing maintainability.
8979 Fixed a regression with the ConcatenateResTemplate() ASL operator
8981 in the 20051021 release.
8983 Implemented support for "local" internal ACPI object types within the
8984 debugger "Object" command and the AcpiWalkNamespace external interfaces.
8985 These local types include RegionFields, BankFields, IndexFields, Alias,
8989 Moved common AML resource handling code into a new file, "utresrc.c".
8991 code is shared by both the Resource Manager and the AML Debugger.
8993 Code and Data Size: The current and previous library sizes for the core
8994 subsystem are shown below. These are the code and data sizes for the
8995 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8997 values do not include any ACPI driver or OSPM code. The debug version of
8999 code includes the debug output trace mechanism and has a much larger code
9000 and data size. Note that these values will vary depending on the
9002 of the compiler and the compiler options used during generation.
9005 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
9006 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
9008 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
9009 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
9012 2) iASL Compiler/Disassembler:
9014 Fixed a problem with very large initializer lists (more than 4000
9016 for both Buffer and Package objects where the parse stack could overflow.
9018 Enhanced the pre-compile source code scan for non-ASCII characters to
9020 characters within comment fields. The scan is now always performed and is
9022 longer optional, detecting invalid characters within a source file
9023 immediately rather than during the parse phase or later.
9025 Enhanced the ASL grammar definition to force early reductions on all
9027 style grammar elements so that the overall parse stack usage is greatly
9028 reduced. This should improve performance and reduce the possibility of
9032 Eliminated all reduce/reduce conflicts in the iASL parser generation.
9034 with the addition of a %expected statement, the compiler generates from
9035 source with no warnings.
9037 Fixed a possible segment fault in the disassembler if the input filename
9038 does not contain a "dot" extension (Thomas Renninger).
9040 ----------------------------------------
9041 21 October 2005. Summary of changes for version 20051021:
9043 1) ACPI CA Core Subsystem:
9045 Implemented support for the EM64T and other x86-64 processors. This
9046 essentially entails recognizing that these processors support non-aligned
9047 memory transfers. Previously, all 64-bit processors were assumed to lack
9048 hardware support for non-aligned transfers.
9050 Completed conversion of the Resource Manager to nearly full table-driven
9051 operation. Specifically, the resource conversion code (convert AML to
9052 internal format and the reverse) and the debug code to dump internal
9053 resource descriptors are fully table-driven, reducing code and data size
9055 improving maintainability.
9057 The OSL interfaces for Acquire and Release Lock now use a 64-bit flag
9059 on 64-bit processors instead of a fixed 32-bit word. (With assistance
9061 Alexey Starikovskiy)
9063 Implemented support within the resource conversion code for the Type-
9064 Specific byte within the various ACPI 3.0 *WordSpace macros.
9066 Fixed some issues within the resource conversion code for the type-
9068 flags for both Memory and I/O address resource descriptors. For Memory,
9069 implemented support for the MTP and TTP flags. For I/O, split the TRS and
9070 TTP flags into two separate fields.
9072 Code and Data Size: The current and previous library sizes for the core
9073 subsystem are shown below. These are the code and data sizes for the
9074 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9076 values do not include any ACPI driver or OSPM code. The debug version of
9078 code includes the debug output trace mechanism and has a much larger code
9079 and data size. Note that these values will vary depending on the
9081 of the compiler and the compiler options used during generation.
9084 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
9085 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
9087 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
9088 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
9092 2) iASL Compiler/Disassembler:
9094 Relaxed a compiler restriction that disallowed a ResourceIndex byte if
9096 corresponding ResourceSource string was not also present in a resource
9097 descriptor declaration. This restriction caused problems with existing
9098 AML/ASL code that includes the Index byte without the string. When such
9100 was disassembled, it could not be compiled without modification. Further,
9101 the modified code created a resource template with a different size than
9103 original, breaking code that used fixed offsets into the resource
9107 Removed a recent feature of the disassembler to ignore a lone
9109 byte. This byte is now emitted if present so that the exact AML can be
9110 reproduced when the disassembled code is recompiled.
9112 Improved comments and text alignment for the resource descriptor code
9113 emitted by the disassembler.
9115 Implemented disassembler support for the ACPI 3.0 AccessSize field within
9117 Register() resource descriptor.
9119 ----------------------------------------
9120 30 September 2005. Summary of changes for version 20050930:
9122 1) ACPI CA Core Subsystem:
9124 Completed a major overhaul of the Resource Manager code - specifically,
9125 optimizations in the area of the AML/internal resource conversion code.
9127 code has been optimized to simplify and eliminate duplicated code, CPU
9129 use has been decreased by optimizing function parameters and local
9130 variables, and naming conventions across the manager have been
9132 for clarity and ease of maintenance (this includes function, parameter,
9133 variable, and struct/typedef names.) The update may force changes in some
9134 driver code, depending on how resources are handled by the host OS.
9136 All Resource Manager dispatch and information tables have been moved to a
9137 single location for clarity and ease of maintenance. One new file was
9138 created, named "rsinfo.c".
9140 The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to
9141 guarantee that the argument is not evaluated twice, making them less
9143 to macro side-effects. However, since there exists the possibility of
9144 additional stack use if a particular compiler cannot optimize them (such
9146 in the debug generation case), the original macros are optionally
9148 Note that some invocations of the return_VALUE macro may now cause size
9149 mismatch warnings; the return_UINT8 and return_UINT32 macros are provided
9151 eliminate these. (From Randy Dunlap)
9153 Implemented a new mechanism to enable debug tracing for individual
9155 methods. A new external interface, AcpiDebugTrace, is provided to enable
9156 this mechanism. The intent is to allow the host OS to easily enable and
9157 disable tracing for problematic control methods. This interface can be
9158 easily exposed to a user or debugger interface if desired. See the file
9159 psxface.c for details.
9161 AcpiUtCallocate will now return a valid pointer if a length of zero is
9162 specified - a length of one is used and a warning is issued. This matches
9163 the behavior of AcpiUtAllocate.
9165 Code and Data Size: The current and previous library sizes for the core
9166 subsystem are shown below. These are the code and data sizes for the
9167 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9169 values do not include any ACPI driver or OSPM code. The debug version of
9171 code includes the debug output trace mechanism and has a much larger code
9172 and data size. Note that these values will vary depending on the
9174 of the compiler and the compiler options used during generation.
9177 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
9178 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
9180 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
9181 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
9184 2) iASL Compiler/Disassembler:
9186 A remark is issued if the effective compile-time length of a package or
9187 buffer is zero. Previously, this was a warning.
9189 ----------------------------------------
9190 16 September 2005. Summary of changes for version 20050916:
9192 1) ACPI CA Core Subsystem:
9194 Fixed a problem within the Resource Manager where support for the Generic
9195 Register descriptor was not fully implemented. This descriptor is now
9197 recognized, parsed, disassembled, and displayed.
9199 Completely restructured the Resource Manager code to utilize table-driven
9200 dispatch and lookup, eliminating many of the large switch() statements.
9202 reduces overall subsystem code size and code complexity. Affects the
9203 resource parsing and construction, disassembly, and debug dump output.
9205 Cleaned up and restructured the debug dump output for all resource
9206 descriptors. Improved readability of the output and reduced code size.
9208 Fixed a problem where changes to internal data structures caused the
9209 optional ACPI_MUTEX_DEBUG code to fail compilation if specified.
9211 Code and Data Size: The current and previous library sizes for the core
9212 subsystem are shown below. These are the code and data sizes for the
9213 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9215 values do not include any ACPI driver or OSPM code. The debug version of
9217 code includes the debug output trace mechanism and has a much larger code
9218 and data size. Note that these values will vary depending on the
9220 of the compiler and the compiler options used during generation.
9223 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
9224 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
9226 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
9227 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
9230 2) iASL Compiler/Disassembler:
9232 Updated the disassembler to automatically insert an EndDependentFn()
9234 into the ASL stream if this macro is missing in the original AML code,
9235 simplifying compilation of the resulting ASL module.
9237 Fixed a problem in the disassembler where a disassembled ResourceSource
9238 string (within a large resource descriptor) was not surrounded by quotes
9240 not followed by a comma, causing errors when the resulting ASL module was
9241 compiled. Also, escape sequences within a ResourceSource string are now
9242 handled correctly (especially "\\")
9244 ----------------------------------------
9245 02 September 2005. Summary of changes for version 20050902:
9247 1) ACPI CA Core Subsystem:
9249 Fixed a problem with the internal Owner ID allocation and deallocation
9250 mechanisms for control method execution and recursive method invocation.
9251 This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId"
9252 messages seen on some systems. Recursive method invocation depth is
9253 currently limited to 255. (Alexey Starikovskiy)
9255 Completely eliminated all vestiges of support for the "module-level
9256 executable code" until this support is fully implemented and debugged.
9258 should eliminate the NO_RETURN_VALUE exceptions seen during table load on
9259 some systems that invoke this support.
9261 Fixed a problem within the resource manager code where the transaction
9263 for a 64-bit address descriptor were handled incorrectly in the type-
9266 Consolidated duplicate code within the address descriptor resource
9268 code, reducing overall subsystem code size.
9270 Fixed a fault when using the AML debugger "disassemble" command to
9271 disassemble individual control methods.
9273 Removed references to the "release_current" directory within the Unix
9276 Code and Data Size: The current and previous core subsystem library sizes
9277 are shown below. These are the code and data sizes for the acpica.lib
9278 produced by the Microsoft Visual C++ 6.0 compiler. These values do not
9279 include any ACPI driver or OSPM code. The debug version of the code
9281 the debug output trace mechanism and has a much larger code and data
9283 Note that these values will vary depending on the efficiency of the
9285 and the compiler options used during generation.
9288 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
9289 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
9291 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
9292 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
9295 2) iASL Compiler/Disassembler:
9297 Implemented an error check for illegal duplicate values in the interrupt
9299 dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and
9302 Implemented error checking for the Irq() and IrqNoFlags() macros to
9304 too many values in the interrupt list (16 max) and invalid values in the
9307 The maximum length string literal within an ASL file is now restricted to
9308 200 characters as per the ACPI specification.
9310 Fixed a fault when using the -ln option (generate namespace listing).
9312 Implemented an error check to determine if a DescriptorName within a
9313 resource descriptor has already been used within the current scope.
9315 ----------------------------------------
9316 15 August 2005. Summary of changes for version 20050815:
9318 1) ACPI CA Core Subsystem:
9320 Implemented a full bytewise compare to determine if a table load request
9322 attempting to load a duplicate table. The compare is performed if the
9324 signatures and table lengths match. This will allow different tables with
9325 the same OEM Table ID and revision to be loaded - probably against the
9327 specification, but discovered in the field nonetheless.
9329 Added the changes.txt logfile to each of the zipped release packages.
9331 Code and Data Size: Current and previous core subsystem library sizes are
9332 shown below. These are the code and data sizes for the acpica.lib
9334 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9335 any ACPI driver or OSPM code. The debug version of the code includes the
9336 debug output trace mechanism and has a much larger code and data size.
9338 that these values will vary depending on the efficiency of the compiler
9340 the compiler options used during generation.
9343 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
9344 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
9346 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
9347 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
9350 2) iASL Compiler/Disassembler:
9352 Fixed a problem where incorrect AML code could be generated for Package
9353 objects if optimization is disabled (via the -oa switch).
9355 Fixed a problem with where incorrect AML code is generated for variable-
9356 length packages when the package length is not specified and the number
9358 initializer values is greater than 255.
9361 ----------------------------------------
9362 29 July 2005. Summary of changes for version 20050729:
9364 1) ACPI CA Core Subsystem:
9366 Implemented support to ignore an attempt to install/load a particular
9368 table more than once. Apparently there exists BIOS code that repeatedly
9369 attempts to load the same SSDT upon certain events. With assistance from
9370 Venkatesh Pallipadi.
9372 Restructured the main interface to the AML parser in order to correctly
9373 handle all exceptional conditions. This will prevent leakage of the
9375 resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on
9377 machines. With assistance from Alexey Starikovskiy.
9379 Support for "module level code" has been disabled in this version due to
9381 number of issues that have appeared on various machines. The support can
9383 enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem
9384 compilation. When the issues are fully resolved, the code will be enabled
9388 Modified the internal functions for debug print support to define the
9389 FunctionName parameter as a (const char *) for compatibility with
9391 built-in macros such as __FUNCTION__, etc.
9393 Linted the entire ACPICA source tree for both 32-bit and 64-bit.
9395 Implemented support to display an object count summary for the AML
9397 commands Object and Methods.
9399 Code and Data Size: Current and previous core subsystem library sizes are
9400 shown below. These are the code and data sizes for the acpica.lib
9402 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9403 any ACPI driver or OSPM code. The debug version of the code includes the
9404 debug output trace mechanism and has a much larger code and data size.
9406 that these values will vary depending on the efficiency of the compiler
9408 the compiler options used during generation.
9411 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
9412 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
9414 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
9415 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
9418 2) iASL Compiler/Disassembler:
9420 Fixed a regression that appeared in the 20050708 version of the compiler
9421 where an error message was inadvertently emitted for invocations of the
9423 reserved control method.
9425 ----------------------------------------
9426 08 July 2005. Summary of changes for version 20050708:
9428 1) ACPI CA Core Subsystem:
9430 The use of the CPU stack in the debug version of the subsystem has been
9431 considerably reduced. Previously, a debug structure was declared in every
9432 function that used the debug macros. This structure has been removed in
9433 favor of declaring the individual elements as parameters to the debug
9434 functions. This reduces the cumulative stack use during nested execution
9436 ACPI function calls at the cost of a small increase in the code size of
9438 debug version of the subsystem. With assistance from Alexey Starikovskiy
9442 Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent
9443 headers to define a macro that will return the current function name at
9444 runtime (such as __FUNCTION__ or _func_, etc.) The function name is used
9446 the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the
9447 compiler-dependent header, the function name is saved on the CPU stack
9449 pointer per function.) This mechanism is used because apparently there
9450 exists no standard ANSI-C defined macro that that returns the function
9453 Redesigned and reimplemented the "Owner ID" mechanism used to track
9454 namespace objects created/deleted by ACPI tables and control method
9455 execution. A bitmap is now used to allocate and free the IDs, thus
9457 the wraparound problem present in the previous implementation. The size
9459 the namespace node descriptor was reduced by 2 bytes as a result (Alexey
9462 Removed the UINT32_BIT and UINT16_BIT types that were used for the
9464 flag definitions within the headers for the predefined ACPI tables. These
9465 have been replaced by UINT8_BIT in order to increase the code portability
9467 the subsystem. If the use of UINT8 remains a problem, we may be forced to
9468 eliminate bitfields entirely because of a lack of portability.
9470 Enhanced the performance of the AcpiUtUpdateObjectReference procedure.
9472 is a frequently used function and this improvement increases the
9474 of the entire subsystem (Alexey Starikovskiy).
9476 Fixed several possible memory leaks and the inverse - premature object
9477 deletion (Alexey Starikovskiy).
9479 Code and Data Size: Current and previous core subsystem library sizes are
9480 shown below. These are the code and data sizes for the acpica.lib
9482 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9483 any ACPI driver or OSPM code. The debug version of the code includes the
9484 debug output trace mechanism and has a much larger code and data size.
9486 that these values will vary depending on the efficiency of the compiler
9488 the compiler options used during generation.
9491 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
9492 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
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 ----------------------------------------
9498 24 June 2005. Summary of changes for version 20050624:
9500 1) ACPI CA Core Subsystem:
9502 Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for
9503 the host-defined cache object. This allows the OSL implementation to
9505 and type this object in any manner desired, simplifying the OSL
9506 implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for
9507 Linux, and should be defined in the OS-specific header file for other
9508 operating systems as required.
9510 Changed the interface to AcpiOsAcquireObject to directly return the
9511 requested object as the function return (instead of ACPI_STATUS.) This
9512 change was made for performance reasons, since this is the purpose of the
9513 interface in the first place. AcpiOsAcquireObject is now similar to the
9514 AcpiOsAllocate interface.
9516 Implemented a new AML debugger command named Businfo. This command
9518 information about all devices that have an associate _PRT object. The
9520 _HID, _UID, and _CID are displayed for these devices.
9522 Modified the initialization sequence in AcpiInitializeSubsystem to call
9524 OSL interface AcpiOslInitialize first, before any local initialization.
9526 change was required because the global initialization now calls OSL
9529 Enhanced the Dump command to display the entire contents of Package
9531 (including all sub-objects and their values.)
9533 Restructured the code base to split some files because of size and/or
9534 because the code logically belonged in a separate file. New files are
9536 below. All makefiles and project files included in the ACPI CA release
9539 utilities/utcache.c /* Local cache interfaces */
9540 utilities/utmutex.c /* Local mutex support */
9541 utilities/utstate.c /* State object support */
9542 interpreter/parser/psloop.c /* Main AML parse loop */
9544 Code and Data Size: Current and previous core subsystem library sizes are
9545 shown below. These are the code and data sizes for the acpica.lib
9547 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9548 any ACPI driver or OSPM code. The debug version of the code includes the
9549 debug output trace mechanism and has a much larger code and data size.
9551 that these values will vary depending on the efficiency of the compiler
9553 the compiler options used during generation.
9556 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
9557 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
9559 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
9560 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
9563 2) iASL Compiler/Disassembler:
9565 Fixed a regression introduced in version 20050513 where the use of a
9567 object within a Case() statement caused a compile time exception. The
9568 original behavior has been restored (a Match() operator is emitted.)
9570 ----------------------------------------
9571 17 June 2005. Summary of changes for version 20050617:
9573 1) ACPI CA Core Subsystem:
9575 Moved the object cache operations into the OS interface layer (OSL) to
9577 the host OS to handle these operations if desired (for example, the Linux
9578 OSL will invoke the slab allocator). This support is optional; the
9580 time define ACPI_USE_LOCAL_CACHE may be used to utilize the original
9582 code in the ACPI CA core. The new OSL interfaces are shown below. See
9583 utalloc.c for an example implementation, and acpiosxf.h for the exact
9584 interface definitions. With assistance from Alexey Starikovskiy.
9591 Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to
9593 and restore a flags parameter. This fits better with many OS lock models.
9594 Note: the current execution state (interrupt handler or not) is no longer
9595 passed to these interfaces. If necessary, the OSL must determine this
9597 by itself, a simple and fast operation. With assistance from Alexey
9600 Fixed a problem in the ACPI table handling where a valid XSDT was assumed
9601 present if the revision of the RSDP was 2 or greater. According to the
9603 specification, the XSDT is optional in all cases, and the table manager
9604 therefore now checks for both an RSDP >=2 and a valid XSDT pointer.
9605 Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs
9609 Fixed an interpreter problem with the Mid() operator in the case of an
9611 string where the resulting output string is of zero length. It now
9613 returns a valid, null terminated string object instead of a string object
9614 with a null pointer.
9616 Fixed a problem with the control method argument handling to allow a
9618 to an Arg object that already contains an object of type Device. The
9620 object is now correctly overwritten. Previously, an error was returned.
9623 Enhanced the debugger Find command to emit object values in addition to
9625 found object pathnames. The output format is the same as the dump
9629 Enhanced the debugger Set command. It now has the ability to set the
9631 of any Named integer object in the namespace (Previously, only method
9633 and args could be set.)
9635 Code and Data Size: Current and previous core subsystem library sizes are
9636 shown below. These are the code and data sizes for the acpica.lib
9638 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9639 any ACPI driver or OSPM code. The debug version of the code includes the
9640 debug output trace mechanism and has a much larger code and data size.
9642 that these values will vary depending on the efficiency of the compiler
9644 the compiler options used during generation.
9647 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
9648 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
9650 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
9651 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
9654 2) iASL Compiler/Disassembler:
9656 Fixed a regression in the disassembler where if/else/while constructs
9658 output incorrectly. This problem was introduced in the previous release
9659 (20050526). This problem also affected the single-step disassembly in the
9662 Fixed a problem where compiling the reserved _OSI method would randomly
9664 rarely) produce compile errors.
9666 Enhanced the disassembler to emit compilable code in the face of
9668 AML resource descriptors. If the optional ResourceSourceIndex is present,
9669 but the ResourceSource is not, do not emit the ResourceSourceIndex in the
9670 disassembly. Otherwise, the resulting code cannot be compiled without
9673 ----------------------------------------
9674 26 May 2005. Summary of changes for version 20050526:
9676 1) ACPI CA Core Subsystem:
9678 Implemented support to execute Type 1 and Type 2 AML opcodes appearing at
9679 the module level (not within a control method.) These opcodes are
9681 exactly once at the time the table is loaded. This type of code was legal
9683 until the release of ACPI 2.0B (2002) and is now supported within ACPI CA
9685 order to provide backwards compatibility with earlier BIOS
9687 This eliminates the "Encountered executable code at module level" warning
9688 that was previously generated upon detection of such code.
9690 Fixed a problem in the interpreter where an AE_NOT_FOUND exception could
9691 inadvertently be generated during the lookup of namespace objects in the
9692 second pass parse of ACPI tables and control methods. It appears that
9694 problem could occur during the resolution of forward references to
9698 Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function,
9699 corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This
9700 allows the deadlock detection debug code to be compiled out in the normal
9701 case, improving mutex performance (and overall subsystem performance)
9704 Implemented a handful of miscellaneous fixes for possible memory leaks on
9705 error conditions and error handling control paths. These fixes were
9706 suggested by FreeBSD and the Coverity Prevent source code analysis tool.
9708 Added a check for a null RSDT pointer in AcpiGetFirmwareTable
9710 to prevent a fault in this error case.
9712 Code and Data Size: Current and previous core subsystem library sizes are
9713 shown below. These are the code and data sizes for the acpica.lib
9715 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9716 any ACPI driver or OSPM code. The debug version of the code includes the
9717 debug output trace mechanism and has a much larger code and data size.
9719 that these values will vary depending on the efficiency of the compiler
9721 the compiler options used during generation.
9724 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
9725 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
9727 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
9728 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
9731 2) iASL Compiler/Disassembler:
9733 Implemented support to allow Type 1 and Type 2 ASL operators to appear at
9734 the module level (not within a control method.) These operators will be
9735 executed once at the time the table is loaded. This type of code was
9737 up until the release of ACPI 2.0B (2002) and is now supported by the iASL
9738 compiler in order to provide backwards compatibility with earlier BIOS
9742 The ACPI integer width (specified via the table revision ID or the -r
9743 override, 32 or 64 bits) is now used internally during compile-time
9745 folding to ensure that constants are truncated to 32 bits if necessary.
9746 Previously, the revision ID value was only emitted in the AML table
9749 An error message is now generated for the Mutex and Method operators if
9751 SyncLevel parameter is outside the legal range of 0 through 15.
9753 Fixed a problem with the Method operator ParameterTypes list handling
9755 3.0). Previously, more than 2 types or 2 arguments generated a syntax
9757 The actual underlying implementation of method argument typechecking is
9758 still under development, however.
9760 ----------------------------------------
9761 13 May 2005. Summary of changes for version 20050513:
9763 1) ACPI CA Core Subsystem:
9765 Implemented support for PCI Express root bridges -- added support for
9767 PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup.
9769 The interpreter now automatically truncates incoming 64-bit constants to
9771 bits if currently executing out of a 32-bit ACPI table (Revision < 2).
9773 also affects the iASL compiler constant folding. (Note: as per below, the
9774 iASL compiler no longer allows 64-bit constants within 32-bit tables.)
9776 Fixed a problem where string and buffer objects with "static" pointers
9777 (pointers to initialization data within an ACPI table) were not handled
9778 consistently. The internal object copy operation now always copies the
9780 to a newly allocated buffer, regardless of whether the source object is
9783 Fixed a problem with the FromBCD operator where an implicit result
9784 conversion was improperly performed while storing the result to the
9786 operand. Since this is an "explicit conversion" operator, the implicit
9787 conversion should never be performed on the output.
9789 Fixed a problem with the CopyObject operator where a copy to an existing
9790 named object did not always completely overwrite the existing object
9792 at name. Specifically, a buffer-to-buffer copy did not delete the
9796 Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces
9798 structs for consistency.
9800 Code and Data Size: Current and previous core subsystem library sizes are
9801 shown below. These are the code and data sizes for the acpica.lib
9803 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9804 any ACPI driver or OSPM code. The debug version of the code includes the
9805 debug output trace mechanism and has a much larger code and data size.
9807 that these values will vary depending on the efficiency of the compiler
9809 the compiler options used during generation.
9812 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
9813 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
9814 Current Release: (Same sizes)
9815 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
9816 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
9819 2) iASL Compiler/Disassembler:
9821 The compiler now emits a warning if an attempt is made to generate a 64-
9823 integer constant from within a 32-bit ACPI table (Revision < 2). The
9825 is truncated to 32 bits.
9827 Fixed a problem with large package objects: if the static length of the
9828 package is greater than 255, the "variable length package" opcode is
9829 emitted. Previously, this caused an error. This requires an update to the
9830 ACPI spec, since it currently (incorrectly) states that packages larger
9832 255 elements are not allowed.
9834 The disassembler now correctly handles variable length packages and
9836 larger than 255 elements.
9838 ----------------------------------------
9839 08 April 2005. Summary of changes for version 20050408:
9841 1) ACPI CA Core Subsystem:
9843 Fixed three cases in the interpreter where an "index" argument to an ASL
9844 function was still (internally) 32 bits instead of the required 64 bits.
9845 This was the Index argument to the Index, Mid, and Match operators.
9847 The "strupr" function is now permanently local (AcpiUtStrupr), since this
9849 not a POSIX-defined function and not present in most kernel-level C
9850 libraries. All references to the C library strupr function have been
9854 Completed the deployment of static functions/prototypes. All prototypes
9856 the static attribute have been moved from the headers to the owning C
9859 Implemented an extract option (-e) for the AcpiBin utility (AML binary
9860 utility). This option allows the utility to extract individual ACPI
9862 from the output of AcpiDmp. It provides the same functionality of the
9863 acpixtract.pl perl script without the worry of setting the correct perl
9864 options. AcpiBin runs on Windows and has not yet been generated/validated
9866 the Linux/Unix environment (but should be soon).
9868 Updated and fixed the table dump option for AcpiBin (-d). This option
9869 converts a single ACPI table to a hex/ascii file, similar to the output
9873 Code and Data Size: Current and previous core subsystem library sizes are
9874 shown below. These are the code and data sizes for the acpica.lib
9876 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9877 any ACPI driver or OSPM code. The debug version of the code includes the
9878 debug output trace mechanism and has a much larger code and data size.
9880 that these values will vary depending on the efficiency of the compiler
9882 the compiler options used during generation.
9885 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
9886 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
9888 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
9889 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
9892 2) iASL Compiler/Disassembler:
9894 Disassembler fix: Added a check to ensure that the table length found in
9896 ACPI table header within the input file is not longer than the actual
9898 file size. This indicates some kind of file or table corruption.
9900 ----------------------------------------
9901 29 March 2005. Summary of changes for version 20050329:
9903 1) ACPI CA Core Subsystem:
9905 An error is now generated if an attempt is made to create a Buffer Field
9907 length zero (A CreateField with a length operand of zero.)
9909 The interpreter now issues a warning whenever executable code at the
9911 level is detected during ACPI table load. This will give some idea of the
9912 prevalence of this type of code.
9914 Implemented support for references to named objects (other than control
9915 methods) within package objects.
9917 Enhanced package object output for the debug object. Package objects are
9919 completely dumped, showing all elements.
9921 Enhanced miscellaneous object output for the debug object. Any object can
9922 now be written to the debug object (for example, a device object can be
9923 written, and the type of the object will be displayed.)
9925 The "static" qualifier has been added to all local functions across both
9927 core subsystem and the iASL compiler.
9929 The number of "long" lines (> 80 chars) within the source has been
9930 significantly reduced, by about 1/3.
9932 Cleaned up all header files to ensure that all CA/iASL functions are
9933 prototyped (even static functions) and the formatting is consistent.
9935 Two new header files have been added, acopcode.h and acnames.h.
9937 Removed several obsolete functions that were no longer used.
9939 Code and Data Size: Current and previous core subsystem library sizes are
9940 shown below. These are the code and data sizes for the acpica.lib
9942 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9943 any ACPI driver or OSPM code. The debug version of the code includes the
9944 debug output trace mechanism and has a much larger code and data size.
9946 that these values will vary depending on the efficiency of the compiler
9948 the compiler options used during generation.
9951 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9952 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
9954 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
9955 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
9959 2) iASL Compiler/Disassembler:
9961 Fixed a problem with the resource descriptor generation/support. For the
9962 ResourceSourceIndex and the ResourceSource fields, both must be present,
9964 both must be not present - can't have one without the other.
9966 The compiler now returns non-zero from the main procedure if any errors
9968 occurred during the compilation.
9971 ----------------------------------------
9972 09 March 2005. Summary of changes for version 20050309:
9974 1) ACPI CA Core Subsystem:
9976 The string-to-buffer implicit conversion code has been modified again
9978 a change to the ACPI specification. In order to match the behavior of
9980 other major ACPI implementation, the target buffer is no longer truncated
9982 the source string is smaller than an existing target buffer. This change
9983 requires an update to the ACPI spec, and should eliminate the recent
9984 AE_AML_BUFFER_LIMIT issues.
9986 The "implicit return" support was rewritten to a new algorithm that
9988 the general case. Rather than attempt to determine when a method is about
9990 exit, the result of every ASL operator is saved momentarily until the
9992 next ASL operator is executed. Therefore, no matter how the method exits,
9993 there will always be a saved implicit return value. This feature is only
9994 enabled with the AcpiGbl_EnableInterpreterSlack flag, and should
9996 AE_AML_NO_RETURN_VALUE errors when enabled.
9998 Implemented implicit conversion support for the predicate (operand) of
10000 If, Else, and While operators. String and Buffer arguments are
10002 converted to Integers.
10004 Changed the string-to-integer conversion behavior to match the new ACPI
10005 errata: "If no integer object exists, a new integer is created. The ASCII
10006 string is interpreted as a hexadecimal constant. Each string character is
10007 interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting
10008 with the first character as the most significant digit, and ending with
10010 first non-hexadecimal character or end-of-string." This means that the
10012 non-hex character terminates the conversion and this is the code that was
10015 Fixed a problem where the ObjectType operator would fail (fault) when
10017 on an Index of a Package which pointed to a null package element. The
10018 operator now properly returns zero (Uninitialized) in this case.
10020 Fixed a problem where the While operator used excessive memory by not
10021 properly popping the result stack during execution. There was no memory
10023 after execution, however. (Code provided by Valery Podrezov.)
10025 Fixed a problem where references to control methods within Package
10027 caused the method to be invoked, instead of producing a reference object
10028 pointing to the method.
10030 Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree)
10032 improve performance and reduce code size. (Code provided by Alexey
10035 Code and Data Size: Current and previous core subsystem library sizes are
10036 shown below. These are the code and data sizes for the acpica.lib
10038 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10039 any ACPI driver or OSPM code. The debug version of the code includes the
10040 debug output trace mechanism and has a much larger code and data size.
10042 that these values will vary depending on the efficiency of the compiler
10044 the compiler options used during generation.
10047 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
10048 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
10050 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
10051 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
10054 2) iASL Compiler/Disassembler:
10056 Fixed a problem with the Return operator with no arguments. Since the AML
10057 grammar for the byte encoding requires an operand for the Return opcode,
10059 compiler now emits a Return(Zero) for this case. An ACPI specification
10060 update has been written for this case.
10062 For tables other than the DSDT, namepath optimization is automatically
10063 disabled. This is because SSDTs can be loaded anywhere in the namespace,
10065 compiler has no knowledge of where, and thus cannot optimize namepaths.
10067 Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was
10068 inadvertently omitted from the ACPI specification, and will require an
10069 update to the spec.
10071 The source file scan for ASCII characters is now optional (-a). This
10073 was made because some vendors place non-ascii characters within comments.
10074 However, the scan is simply a brute-force byte compare to ensure all
10075 characters in the file are in the range 0x00 to 0x7F.
10077 Fixed a problem with the CondRefOf operator where the compiler was
10078 inappropriately checking for the existence of the target. Since the point
10080 the operator is to check for the existence of the target at run-time, the
10081 compiler no longer checks for the target existence.
10083 Fixed a problem where errors generated from the internal AML interpreter
10084 during constant folding were not handled properly, causing a fault.
10086 Fixed a problem with overly aggressive range checking for the Stall
10087 operator. The valid range (max 255) is now only checked if the operand is
10089 type Integer. All other operand types cannot be statically checked.
10091 Fixed a problem where control method references within the RefOf,
10093 and ObjectType operators were not treated properly. They are now treated
10095 actual references, not method invocations.
10097 Fixed and enhanced the "list namespace" option (-ln). This option was
10099 a number of releases ago.
10101 Improved error handling for the Field, IndexField, and BankField
10103 The compiler now cleanly reports and recovers from errors in the field
10104 component (FieldUnit) list.
10106 Fixed a disassembler problem where the optional ResourceDescriptor fields
10107 TRS and TTP were not always handled correctly.
10109 Disassembler - Comments in output now use "//" instead of "/*"
10111 ----------------------------------------
10112 28 February 2005. Summary of changes for version 20050228:
10114 1) ACPI CA Core Subsystem:
10116 Fixed a problem where the result of an Index() operator (an object
10117 reference) must increment the reference count on the target object for
10119 life of the object reference.
10121 Implemented AML Interpreter and Debugger support for the new ACPI 3.0
10122 Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and
10124 resource descriptors.
10126 Implemented support in the _OSI method for the ACPI 3.0 "Extended Address
10127 Space Descriptor" string, indicating interpreter support for the
10131 Implemented header support for the new ACPI 3.0 FADT flag bits.
10133 Implemented header support for the new ACPI 3.0 PCI Express bits for the
10135 status/enable registers.
10137 Updated header support for the MADT processor local Apic struct and MADT
10138 platform interrupt source struct for new ACPI 3.0 fields.
10140 Implemented header support for the SRAT and SLIT ACPI tables.
10142 Implemented the -s switch in AcpiExec to enable the "InterpreterSlack"
10146 Code and Data Size: Current and previous core subsystem library sizes are
10147 shown below. These are the code and data sizes for the acpica.lib
10149 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10150 any ACPI driver or OSPM code. The debug version of the code includes the
10151 debug output trace mechanism and has a much larger code and data size.
10153 that these values will vary depending on the efficiency of the compiler
10155 the compiler options used during generation.
10158 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
10159 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
10161 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
10162 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
10165 2) iASL Compiler/Disassembler:
10167 Fixed a problem with the internal 64-bit String-to-integer conversion
10169 strings less than two characters long.
10171 Fixed a problem with constant folding where the result of the Index()
10172 operator can not be considered a constant. This means that Index() cannot
10174 a type3 opcode and this will require an update to the ACPI specification.
10176 Disassembler: Implemented support for the TTP, MTP, and TRS resource
10177 descriptor fields. These fields were inadvertently ignored and not output
10179 the disassembly of the resource descriptor.
10182 ----------------------------------------
10183 11 February 2005. Summary of changes for version 20050211:
10185 1) ACPI CA Core Subsystem:
10187 Implemented ACPI 3.0 support for implicit conversion within the Match()
10188 operator. MatchObjects can now be of type integer, buffer, or string
10190 of just type integer. Package elements are implicitly converted to the
10192 of the MatchObject. This change aligns the behavior of Match() with the
10193 behavior of the other logical operators (LLess(), etc.) It also requires
10195 errata change to the ACPI specification as this support was intended for
10196 ACPI 3.0, but was inadvertently omitted.
10198 Fixed a problem with the internal implicit "to buffer" conversion.
10200 that are converted to buffers will cause buffer truncation if the string
10202 smaller than the target buffer. Integers that are converted to buffers
10204 not cause buffer truncation, only zero extension (both as per the ACPI
10205 spec.) The problem was introduced when code was added to truncate the
10206 buffer, but this should not be performed in all cases, only the string
10209 Fixed a problem with the Buffer and Package operators where the
10211 would get confused if two such operators were used as operands to an ASL
10212 operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result
10213 stack was not being popped after the execution of these operators,
10215 in an AE_NO_RETURN_VALUE exception.
10217 Fixed a problem with constructs of the form Store(Index(...),...). The
10218 reference object returned from Index was inadvertently resolved to an
10220 value. This problem was introduced in version 20050114 when the behavior
10222 Store() was modified to restrict the object types that can be used as the
10223 source operand (to match the ACPI specification.)
10225 Reduced excessive stack use within the AcpiGetObjectInfo procedure.
10227 Added a fix to aclinux.h to allow generation of AcpiExec on Linux.
10229 Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct.
10231 Code and Data Size: Current and previous core subsystem library sizes are
10232 shown below. These are the code and data sizes for the acpica.lib
10234 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10235 any ACPI driver or OSPM code. The debug version of the code includes the
10236 debug output trace mechanism and has a much larger code and data size.
10238 that these values will vary depending on the efficiency of the compiler
10240 the compiler options used during generation.
10243 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
10244 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
10246 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
10247 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
10250 2) iASL Compiler/Disassembler:
10252 Fixed a code generation problem in the constant folding optimization code
10253 where incorrect code was generated if a constant was reduced to a buffer
10254 object (i.e., a reduced type 5 opcode.)
10256 Fixed a typechecking problem for the ToBuffer operator. Caused by an
10257 incorrect return type in the internal opcode information table.
10259 ----------------------------------------
10260 25 January 2005. Summary of changes for version 20050125:
10262 1) ACPI CA Core Subsystem:
10264 Fixed a recently introduced problem with the Global Lock where the
10265 underlying semaphore was not created. This problem was introduced in
10266 version 20050114, and caused an AE_AML_NO_OPERAND exception during an
10267 Acquire() operation on _GL.
10269 The local object cache is now optional, and is disabled by default. Both
10270 AcpiExec and the iASL compiler enable the cache because they run in user
10271 mode and this enhances their performance. #define
10272 ACPI_ENABLE_OBJECT_CACHE
10273 to enable the local cache.
10275 Fixed an issue in the internal function AcpiUtEvaluateObject concerning
10277 optional "implicit return" support where an error was returned if no
10279 object was expected, but one was implicitly returned. AE_OK is now
10281 in this case and the implicitly returned object is deleted.
10282 AcpiUtEvaluateObject is only occasionally used, and only to execute
10284 methods such as _STA and _INI where the return type is known up front.
10286 Fixed a few issues with the internal convert-to-integer code. It now
10288 an error if an attempt is made to convert a null string, a string of only
10289 blanks/tabs, or a zero-length buffer. This affects both implicit
10291 and explicit conversion via the ToInteger() operator.
10293 The internal debug code in AcpiUtAcquireMutex has been commented out. It
10295 not needed for normal operation and should increase the performance of
10297 entire subsystem. The code remains in case it is needed for debug
10301 The AcpiExec source and makefile are included in the Unix/Linux package
10305 Code and Data Size: Current and previous core subsystem library sizes are
10306 shown below. These are the code and data sizes for the acpica.lib
10308 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10309 any ACPI driver or OSPM code. The debug version of the code includes the
10310 debug output trace mechanism and has a much larger code and data size.
10312 that these values will vary depending on the efficiency of the compiler
10314 the compiler options used during generation.
10317 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
10318 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
10320 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
10321 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
10323 2) iASL Compiler/Disassembler:
10325 Switch/Case support: A warning is now issued if the type of the Switch
10327 cannot be determined at compile time. For example, Switch(Arg0) will
10328 generate the warning, and the type is assumed to be an integer. As per
10330 ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate
10334 Switch/Case support: Implemented support for buffer and string objects as
10335 the switch value. This is an ACPI 3.0 feature, now that LEqual supports
10336 buffers and strings.
10338 Switch/Case support: The emitted code for the LEqual() comparisons now
10340 the switch value as the first operand, not the second. The case value is
10342 the second operand, and this allows the case value to be implicitly
10343 converted to the type of the switch value, not the other way around.
10345 Switch/Case support: Temporary variables are now emitted immediately
10347 the control method, not at the global level. This means that there are
10349 36 temps available per-method, not 36 temps per-module as was the case
10351 the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.)
10353 ----------------------------------------
10354 14 January 2005. Summary of changes for version 20050114:
10356 Added 2005 copyright to all module headers. This affects every module in
10357 the core subsystem, iASL compiler, and the utilities.
10359 1) ACPI CA Core Subsystem:
10361 Fixed an issue with the String-to-Buffer conversion code where the string
10362 null terminator was not included in the buffer after conversion, but
10364 is existing ASL that assumes the string null terminator is included. This
10366 the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was
10367 introduced in the previous version when the code was updated to correctly
10368 set the converted buffer size as per the ACPI specification. The ACPI
10370 is ambiguous and will be updated to specify that the null terminator must
10372 included in the converted buffer. This also affects the ToBuffer() ASL
10375 Fixed a problem with the Mid() ASL/AML operator where it did not work
10376 correctly on Buffer objects. Newly created sub-buffers were not being
10381 Fixed a problem in AcpiTbFindTable where incorrect string compares were
10382 performed on the OemId and OemTableId table header fields. These fields
10384 not null terminated, so strncmp is now used instead of strcmp.
10386 Implemented a restriction on the Store() ASL/AML operator to align the
10387 behavior with the ACPI specification. Previously, any object could be
10389 as the source operand. Now, the only objects that may be used are
10391 Buffers, Strings, Packages, Object References, and DDB Handles. If
10392 necessary, the original behavior can be restored by enabling the
10393 EnableInterpreterSlack flag.
10395 Enhanced the optional "implicit return" support to allow an implicit
10397 value from methods that are invoked externally via the AcpiEvaluateObject
10398 interface. This enables implicit returns from the _STA and _INI methods,
10401 Changed the Revision() ASL/AML operator to return the current version of
10403 AML interpreter, in the YYYYMMDD format. Previously, it incorrectly
10405 the supported ACPI version (This is the function of the _REV method).
10407 Updated the _REV predefined method to return the currently supported
10411 Implemented batch mode option for the AcpiExec utility (-b).
10413 Code and Data Size: Current and previous core subsystem library sizes are
10414 shown below. These are the code and data sizes for the acpica.lib
10416 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10417 any ACPI driver or OSPM code. The debug version of the code includes the
10418 debug output trace mechanism and has a much larger code and data size.
10420 that these values will vary depending on the efficiency of the compiler
10422 the compiler options used during generation.
10425 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
10426 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
10428 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
10429 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
10431 ----------------------------------------
10432 10 December 2004. Summary of changes for version 20041210:
10434 ACPI 3.0 support is nearing completion in both the iASL compiler and the
10435 ACPI CA core subsystem.
10437 1) ACPI CA Core Subsystem:
10439 Fixed a problem in the ToDecimalString operator where the resulting
10441 length was incorrectly calculated. The length is now calculated exactly,
10442 eliminating incorrect AE_STRING_LIMIT exceptions.
10444 Fixed a problem in the ToHexString operator to allow a maximum 200
10446 string to be produced.
10448 Fixed a problem in the internal string-to-buffer and buffer-to-buffer
10450 routine where the length of the resulting buffer was not truncated to the
10451 new size (if the target buffer already existed).
10453 Code and Data Size: Current and previous core subsystem library sizes are
10454 shown below. These are the code and data sizes for the acpica.lib
10456 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10457 any ACPI driver or OSPM code. The debug version of the code includes the
10458 debug output trace mechanism and has a much larger code and data size.
10460 that these values will vary depending on the efficiency of the compiler
10462 the compiler options used during generation.
10465 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
10466 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
10468 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
10469 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
10472 2) iASL Compiler/Disassembler:
10474 Implemented the new ACPI 3.0 resource template macros - DWordSpace,
10475 ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace.
10476 Includes support in the disassembler.
10478 Implemented support for the new (ACPI 3.0) parameter to the Register
10482 Fixed a problem where the _HE resource name for the Interrupt macro was
10483 referencing bit 0 instead of bit 1.
10485 Implemented check for maximum 255 interrupts in the Interrupt macro.
10487 Fixed a problem with the predefined resource descriptor names where
10488 incorrect AML code was generated if the offset within the resource buffer
10489 was 0 or 1. The optimizer shortened the AML code to a single byte opcode
10490 but did not update the surrounding package lengths.
10492 Changes to the Dma macro: All channels within the channel list must be
10494 the range 0-7. Maximum 8 channels can be specified. BusMaster operand is
10495 optional (default is BusMaster).
10497 Implemented check for maximum 7 data bytes for the VendorShort macro.
10499 The ReadWrite parameter is now optional for the Memory32 and similar
10502 ----------------------------------------
10503 03 December 2004. Summary of changes for version 20041203:
10505 1) ACPI CA Core Subsystem:
10507 The low-level field insertion/extraction code (exfldio) has been
10509 rewritten to eliminate unnecessary complexity, bugs, and boundary
10512 Fixed a problem in the ToInteger, ToBuffer, ToHexString, and
10514 operators where the input operand could be inadvertently deleted if no
10515 conversion was necessary (e.g., if the input to ToInteger was an Integer
10518 Fixed a problem with the ToDecimalString and ToHexString where an
10520 exception code was returned if the resulting string would be > 200 chars.
10521 AE_STRING_LIMIT is now returned.
10523 Fixed a problem with the Concatenate operator where AE_OK was always
10524 returned, even if the operation failed.
10526 Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128
10527 semaphores to be allocated.
10529 Code and Data Size: Current and previous core subsystem library sizes are
10530 shown below. These are the code and data sizes for the acpica.lib
10532 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10533 any ACPI driver or OSPM code. The debug version of the code includes the
10534 debug output trace mechanism and has a much larger code and data size.
10536 that these values will vary depending on the efficiency of the compiler
10538 the compiler options used during generation.
10541 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
10542 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
10544 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
10545 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
10548 2) iASL Compiler/Disassembler:
10550 Fixed typechecking for the ObjectType and SizeOf operators. Problem was
10551 recently introduced in 20041119.
10553 Fixed a problem with the ToUUID macro where the upper nybble of each
10555 byte was inadvertently set to zero.
10557 ----------------------------------------
10558 19 November 2004. Summary of changes for version 20041119:
10560 1) ACPI CA Core Subsystem:
10562 Fixed a problem in the internal ConvertToInteger routine where new
10564 were not truncated to 32 bits for 32-bit ACPI tables. This routine
10566 buffers and strings to integers.
10568 Implemented support to store a value to an Index() on a String object.
10570 is an ACPI 2.0 feature that had not yet been implemented.
10572 Implemented new behavior for storing objects to individual package
10574 (via the Index() operator). The previous behavior was to invoke the
10576 conversion rules if an object was already present at the index. The new
10577 behavior is to simply delete any existing object and directly store the
10579 object. Although the ACPI specification seems unclear on this subject,
10581 ACPI implementations behave in this manner. (This is the root of the
10582 AE_BAD_HEX_CONSTANT issue.)
10584 Modified the RSDP memory scan mechanism to support the extended checksum
10586 ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid
10587 RSDP signature is found with a valid checksum.
10589 Code and Data Size: Current and previous core subsystem library sizes are
10590 shown below. These are the code and data sizes for the acpica.lib
10592 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10593 any ACPI driver or OSPM code. The debug version of the code includes the
10594 debug output trace mechanism and has a much larger code and data size.
10596 that these values will vary depending on the efficiency of the compiler
10598 the compiler options used during generation.
10601 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
10602 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
10604 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
10605 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
10608 2) iASL Compiler/Disassembler:
10610 Fixed a missing semicolon in the aslcompiler.y file.
10612 ----------------------------------------
10613 05 November 2004. Summary of changes for version 20041105:
10615 1) ACPI CA Core Subsystem:
10617 Implemented support for FADT revision 2. This was an interim table
10619 ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register.
10621 Implemented optional support to allow uninitialized LocalX and ArgX
10622 variables in a control method. The variables are initialized to an
10624 object with a value of zero. This support is enabled by setting the
10625 AcpiGbl_EnableInterpreterSlack flag to TRUE.
10627 Implemented support for Integer objects for the SizeOf operator. Either
10629 or 8 is returned, depending on the current integer size (32-bit or 64-
10631 depending on the parent table revision).
10633 Fixed a problem in the implementation of the SizeOf and ObjectType
10635 where the operand was resolved to a value too early, causing incorrect
10636 return values for some objects.
10638 Fixed some possible memory leaks during exceptional conditions.
10640 Code and Data Size: Current and previous core subsystem library sizes are
10641 shown below. These are the code and data sizes for the acpica.lib
10643 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10644 any ACPI driver or OSPM code. The debug version of the code includes the
10645 debug output trace mechanism and has a much larger code and data size.
10647 that these values will vary depending on the efficiency of the compiler
10649 the compiler options used during generation.
10652 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
10653 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
10655 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
10656 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
10659 2) iASL Compiler/Disassembler:
10661 Implemented support for all ACPI 3.0 reserved names and methods.
10663 Implemented all ACPI 3.0 grammar elements in the front-end, including
10664 support for semicolons.
10666 Implemented the ACPI 3.0 Function() and ToUUID() macros
10668 Fixed a problem in the disassembler where a Scope() operator would not be
10669 emitted properly if the target of the scope was in another table.
10671 ----------------------------------------
10672 15 October 2004. Summary of changes for version 20041015:
10674 Note: ACPI CA is currently undergoing an in-depth and complete formal
10675 evaluation to test/verify the following areas. Other suggestions are
10676 welcome. This will result in an increase in the frequency of releases and
10677 the number of bug fixes in the next few months.
10678 - Functional tests for all ASL/AML operators
10679 - All implicit/explicit type conversions
10680 - Bit fields and operation regions
10681 - 64-bit math support and 32-bit-only "truncated" math support
10682 - Exceptional conditions, both compiler and interpreter
10683 - Dynamic object deletion and memory leaks
10684 - ACPI 3.0 support when implemented
10685 - External interfaces to the ACPI subsystem
10688 1) ACPI CA Core Subsystem:
10690 Fixed two alignment issues on 64-bit platforms - within debug statements
10692 AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the
10694 field within the non-aligned ACPI generic address structure.
10696 Fixed a problem in the Increment and Decrement operators where incorrect
10697 operand resolution could result in the inadvertent modification of the
10698 original integer when the integer is passed into another method as an
10699 argument and the arg is then incremented/decremented.
10701 Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-
10703 BCD number were truncated during conversion.
10705 Fixed a problem in the ToDecimal operator where the length of the
10707 string could be set incorrectly too long if the input operand was a
10711 Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte
10713 within a buffer would prematurely terminate a compare between buffer
10716 Added a check for string overflow (>200 characters as per the ACPI
10717 specification) during the Concatenate operator with two string operands.
10719 Code and Data Size: Current and previous core subsystem library sizes are
10720 shown below. These are the code and data sizes for the acpica.lib
10722 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10723 any ACPI driver or OSPM code. The debug version of the code includes the
10724 debug output trace mechanism and has a much larger code and data size.
10726 that these values will vary depending on the efficiency of the compiler
10728 the compiler options used during generation.
10731 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
10732 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
10734 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
10735 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
10739 2) iASL Compiler/Disassembler:
10741 Allow the use of the ObjectType operator on uninitialized Locals and Args
10742 (returns 0 as per the ACPI specification).
10744 Fixed a problem where the compiler would fault if there was a syntax
10746 in the FieldName of all of the various CreateXXXField operators.
10748 Disallow the use of lower case letters within the EISAID macro, as per
10750 ACPI specification. All EISAID strings must be of the form "UUUNNNN"
10752 U is an uppercase letter and N is a hex digit.
10755 ----------------------------------------
10756 06 October 2004. Summary of changes for version 20041006:
10758 1) ACPI CA Core Subsystem:
10760 Implemented support for the ACPI 3.0 Timer operator. This ASL function
10761 implements a 64-bit timer with 100 nanosecond granularity.
10763 Defined a new OSL interface, AcpiOsGetTimer. This interface is used to
10764 implement the ACPI 3.0 Timer operator. This allows the host OS to
10766 the timer with the best clock available. Also, it keeps the core
10768 out of the clock handling business, since the host OS (usually) performs
10771 Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write)
10772 functions use a 64-bit address which is part of the packed ACPI Generic
10773 Address Structure. Since the structure is non-aligned, the alignment
10775 are now used to extract the address to a local variable before use.
10777 Fixed a problem where the ToInteger operator assumed all input strings
10779 hexadecimal. The operator now handles both decimal strings and hex
10781 (prefixed with "0x").
10783 Fixed a problem where the string length in the string object created as a
10784 result of the internal ConvertToString procedure could be incorrect. This
10785 potentially affected all implicit conversions and also the
10787 and ToHexString operators.
10789 Fixed two problems in the ToString operator. If the length parameter was
10790 zero, an incorrect string object was created and the value of the input
10791 length parameter was inadvertently changed from zero to Ones.
10793 Fixed a problem where the optional ResourceSource string in the
10795 resource macro was ignored.
10797 Simplified the interfaces to the internal division functions, reducing
10799 size and complexity.
10801 Code and Data Size: Current and previous core subsystem library sizes are
10802 shown below. These are the code and data sizes for the acpica.lib
10804 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10805 any ACPI driver or OSPM code. The debug version of the code includes the
10806 debug output trace mechanism and has a much larger code and data size.
10808 that these values will vary depending on the efficiency of the compiler
10810 the compiler options used during generation.
10813 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
10814 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
10816 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
10817 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
10820 2) iASL Compiler/Disassembler:
10822 Implemented support for the ACPI 3.0 Timer operator.
10824 Fixed a problem where the Default() operator was inadvertently ignored in
10826 Switch/Case block. This was a problem in the translation of the Switch
10827 statement to If...Else pairs.
10829 Added support to allow a standalone Return operator, with no parentheses
10833 Fixed a problem with code generation for the ElseIf operator where the
10834 translated Else...If parse tree was improperly constructed leading to the
10837 ----------------------------------------
10838 22 September 2004. Summary of changes for version 20040922:
10840 1) ACPI CA Core Subsystem:
10842 Fixed a problem with the implementation of the LNot() operator where
10844 was not returned for the TRUE case. Changed the code to return Ones
10846 of (!Arg) which was usually 1. This change affects iASL constant folding
10848 this operator also.
10850 Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was
10852 initialized properly -- Now zero the entire buffer in this case where the
10853 buffer already exists.
10855 Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32
10856 Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all
10857 related code considerably. This will require changes/updates to all OS
10858 interface layers (OSLs.)
10860 Implemented a new external interface, AcpiInstallExceptionHandler, to
10862 a system exception handler to be installed. This handler is invoked upon
10864 run-time exception that occurs during control method execution.
10866 Added support for the DSDT in AcpiTbFindTable. This allows the
10867 DataTableRegion() operator to access the local copy of the DSDT.
10869 Code and Data Size: Current and previous core subsystem library sizes are
10870 shown below. These are the code and data sizes for the acpica.lib
10872 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10873 any ACPI driver or OSPM code. The debug version of the code includes the
10874 debug output trace mechanism and has a much larger code and data size.
10876 that these values will vary depending on the efficiency of the compiler
10878 the compiler options used during generation.
10881 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
10882 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
10884 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
10885 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
10888 2) iASL Compiler/Disassembler:
10890 Fixed a problem with constant folding and the LNot operator. LNot was
10891 returning 1 in the TRUE case, not Ones as per the ACPI specification.
10893 could result in the generation of an incorrect folded/reduced constant.
10895 End-Of-File is now allowed within a "//"-style comment. A parse error no
10896 longer occurs if such a comment is at the very end of the input ASL
10900 Implemented the "-r" option to override the Revision in the table header.
10901 The initial use of this option will be to simplify the evaluation of the
10903 interpreter by allowing a single ASL source module to be compiled for
10905 32-bit or 64-bit integers.
10908 ----------------------------------------
10909 27 August 2004. Summary of changes for version 20040827:
10911 1) ACPI CA Core Subsystem:
10913 - Implemented support for implicit object conversion in the non-numeric
10914 logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual,
10916 LNotEqual.) Any combination of Integers/Strings/Buffers may now be used;
10917 the second operand is implicitly converted on the fly to match the type
10919 the first operand. For example:
10921 LEqual (Source1, Source2)
10923 Source1 and Source2 must each evaluate to an integer, a string, or a
10925 The data type of Source1 dictates the required type of Source2. Source2
10927 implicitly converted if necessary to match the type of Source1.
10929 - Updated and corrected the behavior of the string conversion support.
10931 rules concerning conversion of buffers to strings (according to the ACPI
10932 specification) are as follows:
10934 ToDecimalString - explicit byte-wise conversion of buffer to string of
10935 decimal values (0-255) separated by commas. ToHexString - explicit byte-
10937 conversion of buffer to string of hex values (0-FF) separated by commas.
10938 ToString - explicit byte-wise conversion of buffer to string. Byte-by-
10940 copy with no transform except NULL terminated. Any other implicit buffer-
10942 string conversion - byte-wise conversion of buffer to string of hex
10944 (0-FF) separated by spaces.
10946 - Fixed typo in definition of AcpiGbl_EnableInterpreterSlack.
10948 - Fixed a problem in AcpiNsGetPathnameLength where the returned length
10950 one byte too short in the case of a node in the root scope. This could
10951 cause a fault during debug output.
10953 - Code and Data Size: Current and previous core subsystem library sizes
10955 shown below. These are the code and data sizes for the acpica.lib
10957 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10958 any ACPI driver or OSPM code. The debug version of the code includes the
10959 debug output trace mechanism and has a much larger code and data size.
10961 that these values will vary depending on the efficiency of the compiler
10963 the compiler options used during generation.
10966 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
10967 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
10969 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
10970 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
10973 2) iASL Compiler/Disassembler:
10975 - Fixed a Linux generation error.
10978 ----------------------------------------
10979 16 August 2004. Summary of changes for version 20040816:
10981 1) ACPI CA Core Subsystem:
10983 Designed and implemented support within the AML interpreter for the so-
10984 called "implicit return". This support returns the result of the last
10986 operation within a control method, in the absence of an explicit Return()
10987 operator. A few machines depend on this behavior, even though it is not
10988 explicitly supported by the ASL language. It is optional support that
10990 be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag.
10992 Removed support for the PCI_Config address space from the internal low
10994 hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This
10995 support was not used internally, and would not work correctly anyway
10997 the PCI bus number and segment number were not supported. There are
10998 separate interfaces for PCI configuration space access because of the
11002 Code and Data Size: Current and previous core subsystem library sizes are
11003 shown below. These are the code and data sizes for the acpica.lib
11005 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11006 any ACPI driver or OSPM code. The debug version of the code includes the
11007 debug output trace mechanism and has a much larger code and data size.
11009 that these values will vary depending on the efficiency of the compiler
11011 the compiler options used during generation.
11014 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
11015 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
11017 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
11018 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
11021 2) iASL Compiler/Disassembler:
11023 Fixed a problem where constants in ASL expressions at the root level (not
11024 within a control method) could be inadvertently truncated during code
11025 generation. This problem was introduced in the 20040715 release.
11028 ----------------------------------------
11029 15 July 2004. Summary of changes for version 20040715:
11031 1) ACPI CA Core Subsystem:
11033 Restructured the internal HW GPE interfaces to pass/track the current
11035 of interrupts (enabled/disabled) in order to avoid possible deadlock and
11036 increase flexibility of the interfaces.
11038 Implemented a "lexicographical compare" for String and Buffer objects
11040 the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -
11042 as per further clarification to the ACPI specification. Behavior is
11044 to C library "strcmp".
11046 Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable
11047 external function. In the 32-bit non-debug case, the stack use has been
11048 reduced from 168 bytes to 32 bytes.
11050 Deployed a new run-time configuration flag,
11051 AcpiGbl_EnableInterpreterSlack,
11052 whose purpose is to allow the AML interpreter to forgive certain bad AML
11053 constructs. Default setting is FALSE.
11055 Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field
11057 support code. If enabled, it allows field access to go beyond the end of
11059 region definition if the field is within the region length rounded up to
11061 next access width boundary (a common coding error.)
11063 Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to
11064 ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also,
11066 symbols are lowercased by the latest version of the AcpiSrc tool.
11068 The prototypes for the PCI interfaces in acpiosxf.h have been updated to
11069 rename "Register" to simply "Reg" to prevent certain compilers from
11072 Code and Data Size: Current and previous core subsystem library sizes are
11073 shown below. These are the code and data sizes for the acpica.lib
11075 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11076 any ACPI driver or OSPM code. The debug version of the code includes the
11077 debug output trace mechanism and has a much larger code and data size.
11079 that these values will vary depending on the efficiency of the compiler
11081 the compiler options used during generation.
11084 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
11085 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
11087 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
11088 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
11091 2) iASL Compiler/Disassembler:
11093 Implemented full support for Package objects within the Case() operator.
11094 Note: The Break() operator is currently not supported within Case blocks
11095 (TermLists) as there is some question about backward compatibility with
11100 Fixed a problem where complex terms were not supported properly within
11104 Eliminated extraneous warning for compiler-emitted reserved names of the
11105 form "_T_x". (Used in Switch/Case operators.)
11107 Eliminated optimization messages for "_T_x" objects and small constants
11108 within the DefinitionBlock operator.
11111 ----------------------------------------
11112 15 June 2004. Summary of changes for version 20040615:
11114 1) ACPI CA Core Subsystem:
11116 Implemented support for Buffer and String objects (as per ACPI 2.0) for
11118 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
11121 All directory names in the entire source package are lower case, as they
11122 were in earlier releases.
11124 Implemented "Disassemble" command in the AML debugger that will
11126 a single control method.
11128 Code and Data Size: Current and previous core subsystem library sizes are
11129 shown below. These are the code and data sizes for the acpica.lib
11131 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11132 any ACPI driver or OSPM code. The debug version of the code includes the
11133 debug output trace mechanism and has a much larger code and data size.
11135 that these values will vary depending on the efficiency of the compiler
11137 the compiler options used during generation.
11140 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
11141 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
11144 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
11145 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
11148 2) iASL Compiler/Disassembler:
11150 Implemented support for Buffer and String objects (as per ACPI 2.0) for
11152 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
11155 All directory names in the entire source package are lower case, as they
11156 were in earlier releases.
11158 Fixed a fault when using the -g or -d<nofilename> options if the FADT was
11161 Fixed an issue with the Windows version of the compiler where later
11163 of Windows place the FADT in the registry under the name "FADT" and not
11164 "FACP" as earlier versions did. This applies when using the -g or -
11165 d<nofilename> options. The compiler now looks for both strings as
11168 Fixed a problem with compiler namepath optimization where a namepath
11170 the Scope() operator could not be optimized if the namepath was a subpath
11172 the current scope path.
11174 ----------------------------------------
11175 27 May 2004. Summary of changes for version 20040527:
11177 1) ACPI CA Core Subsystem:
11179 Completed a new design and implementation for EBDA (Extended BIOS Data
11181 support in the RSDP scan code. The original code improperly scanned for
11183 EBDA by simply scanning from memory location 0 to 0x400. The correct
11185 is to first obtain the EBDA pointer from within the BIOS data area, then
11186 scan 1K of memory starting at the EBDA pointer. There appear to be few
11188 any machines that place the RSDP in the EBDA, however.
11190 Integrated a fix for a possible fault during evaluation of BufferField
11191 arguments. Obsolete code that was causing the problem was removed.
11193 Found and fixed a problem in the Field Support Code where data could be
11194 corrupted on a bit field read that starts on an aligned boundary but does
11195 not end on an aligned boundary. Merged the read/write "datum length"
11196 calculation code into a common procedure.
11198 Rolled in a couple of changes to the FreeBSD-specific header.
11201 Code and Data Size: Current and previous core subsystem library sizes are
11202 shown below. These are the code and data sizes for the acpica.lib
11204 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11205 any ACPI driver or OSPM code. The debug version of the code includes the
11206 debug output trace mechanism and has a much larger code and data size.
11208 that these values will vary depending on the efficiency of the compiler
11210 the compiler options used during generation.
11213 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
11214 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
11216 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
11217 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
11220 2) iASL Compiler/Disassembler:
11222 Fixed a generation warning produced by some overly-verbose compilers for
11226 ----------------------------------------
11227 14 May 2004. Summary of changes for version 20040514:
11229 1) ACPI CA Core Subsystem:
11231 Fixed a problem where hardware GPE enable bits sometimes not set properly
11232 during and after GPE method execution. Result of 04/27 changes.
11234 Removed extra "clear all GPEs" when sleeping/waking.
11236 Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single
11237 AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above
11239 the new AcpiEv* calls as appropriate.
11241 ACPI_OS_NAME was removed from the OS-specific headers. The default name
11243 now "Microsoft Windows NT" for maximum compatibility. However this can
11245 changed by modifying the acconfig.h file.
11247 Allow a single invocation of AcpiInstallNotifyHandler for a handler that
11248 traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag.
11250 Run _INI methods on ThermalZone objects. This is against the ACPI
11251 specification, but there is apparently ASL code in the field that has
11253 _INI methods, and apparently "other" AML interpreters execute them.
11255 Performed a full 16/32/64 bit lint that resulted in some small changes.
11257 Added a sleep simulation command to the AML debugger to test sleep code.
11259 Code and Data Size: Current and previous core subsystem library sizes are
11260 shown below. These are the code and data sizes for the acpica.lib
11262 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11263 any ACPI driver or OSPM code. The debug version of the code includes the
11264 debug output trace mechanism and has a much larger code and data size.
11266 that these values will vary depending on the efficiency of the compiler
11268 the compiler options used during generation.
11271 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
11272 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
11274 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
11275 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
11277 ----------------------------------------
11278 27 April 2004. Summary of changes for version 20040427:
11280 1) ACPI CA Core Subsystem:
11282 Completed a major overhaul of the GPE handling within ACPI CA. There are
11283 now three types of GPEs: wake-only, runtime-only, and combination
11285 The only GPEs allowed to be combination wake/run are for button-style
11286 devices such as a control-method power button, control-method sleep
11288 or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are
11290 referenced by any _PRW methods are marked for "runtime" and hardware
11291 enabled. Any GPE that is referenced by a _PRW method is marked for
11293 (and disabled at runtime). However, at sleep time, only those GPEs that
11294 have been specifically enabled for wake via the AcpiEnableGpe interface
11296 actually be hardware enabled.
11298 A new external interface has been added, AcpiSetGpeType(), that is meant
11300 be used by device drivers to force a GPE to a particular type. It will
11302 especially useful for the drivers for the button devices mentioned above.
11304 Completed restructuring of the ACPI CA initialization sequence so that
11305 default operation region handlers are installed before GPEs are
11307 and the _PRW methods are executed. This will prevent errors when the
11309 methods attempt to access system memory or I/O space.
11311 GPE enable/disable no longer reads the GPE enable register. We now keep
11313 enable info for runtime and wake separate and in the GPE_EVENT_INFO. We
11314 thus no longer depend on the hardware to maintain these bits.
11316 Always clear the wake status and fixed/GPE status bits before sleep, even
11319 Improved the AML debugger output for displaying the GPE blocks and their
11322 Added new strings for the _OSI method, of the form "Windows 2001 SPx"
11326 Fixed a problem where the physical address was incorrectly calculated
11328 the Load() operator was used to directly load from an Operation Region
11330 loading from a Field object.) Also added check for minimum table length
11334 Fix for multiple mutex acquisition. Restore original thread SyncLevel on
11337 Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for
11338 consistency with the other fields returned.
11340 Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such
11341 structure for each GPE in the system, so the size of this structure is
11344 CPU stack requirement reduction: Cleaned up the method execution and
11346 evaluation paths so that now a parameter structure is passed, instead of
11347 copying the various method parameters over and over again.
11349 In evregion.c: Correctly exit and reenter the interpreter region if and
11350 only if dispatching an operation region request to a user-installed
11352 Do not exit/reenter when dispatching to a default handler (e.g., default
11353 system memory or I/O handlers)
11356 Notes for updating drivers for the new GPE support. The following
11358 must be made to ACPI-related device drivers that are attached to one or
11360 GPEs: (This information will be added to the ACPI CA Programmer
11363 1) AcpiInstallGpeHandler no longer automatically enables the GPE, you
11365 explicitly call AcpiEnableGpe.
11366 2) There is a new interface called AcpiSetGpeType. This should be called
11367 before enabling the GPE. Also, this interface will automatically disable
11368 the GPE if it is currently enabled.
11369 3) AcpiEnableGpe no longer supports a GPE type flag.
11371 Specific drivers that must be changed:
11373 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED,
11374 AeGpeHandler, NULL);
11375 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME);
11376 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR);
11378 2) Button Drivers (Power, Lid, Sleep):
11379 Run _PRW method under parent device
11380 If _PRW exists: /* This is a control-method button */
11381 Extract GPE number and possibly GpeDevice
11382 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN);
11383 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR);
11385 For all other devices that have _PRWs, we automatically set the GPE type
11387 ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled.
11389 must be done on a selective basis, usually requiring some kind of user
11391 to allow the user to pick the wake devices.
11394 Code and Data Size: Current and previous core subsystem library sizes are
11395 shown below. These are the code and data sizes for the acpica.lib
11397 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11398 any ACPI driver or OSPM code. The debug version of the code includes the
11399 debug output trace mechanism and has a much larger code and data size.
11401 that these values will vary depending on the efficiency of the compiler
11403 the compiler options used during generation.
11406 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
11407 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
11410 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
11411 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
11415 ----------------------------------------
11416 02 April 2004. Summary of changes for version 20040402:
11418 1) ACPI CA Core Subsystem:
11420 Fixed an interpreter problem where an indirect store through an ArgX
11421 parameter was incorrectly applying the "implicit conversion rules" during
11422 the store. From the ACPI specification: "If the target is a method local
11424 argument (LocalX or ArgX), no conversion is performed and the result is
11425 stored directly to the target". The new behavior is to disable implicit
11426 conversion during ALL stores to an ArgX.
11428 Changed the behavior of the _PRW method scan to ignore any and all errors
11429 returned by a given _PRW. This prevents the scan from aborting from the
11430 failure of any single _PRW.
11432 Moved the runtime configuration parameters from the global init procedure
11434 static variables in acglobal.h. This will allow the host to override the
11435 default values easily.
11437 Code and Data Size: Current and previous core subsystem library sizes are
11438 shown below. These are the code and data sizes for the acpica.lib
11440 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11441 any ACPI driver or OSPM code. The debug version of the code includes the
11442 debug output trace mechanism and has a much larger code and data size.
11444 that these values will vary depending on the efficiency of the compiler
11446 the compiler options used during generation.
11449 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
11450 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
11452 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
11453 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
11456 2) iASL Compiler/Disassembler:
11458 iASL now fully disassembles SSDTs. However, External() statements are
11460 generated automatically for unresolved symbols at this time. This is a
11461 planned feature for future implementation.
11463 Fixed a scoping problem in the disassembler that occurs when the type of
11465 target of a Scope() operator is overridden. This problem caused an
11466 incorrectly nested internal namespace to be constructed.
11468 Any warnings or errors that are emitted during disassembly are now
11470 out automatically so that the resulting file can be recompiled without
11474 ----------------------------------------
11475 26 March 2004. Summary of changes for version 20040326:
11477 1) ACPI CA Core Subsystem:
11479 Implemented support for "wake" GPEs via interaction between GPEs and the
11480 _PRW methods. Every GPE that is pointed to by one or more _PRWs is
11481 identified as a WAKE GPE and by default will no longer be enabled at
11482 runtime. Previously, we were blindly enabling all GPEs with a
11484 _Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway.
11486 believe this has been the cause of thousands of "spurious" GPEs on some
11489 This new GPE behavior is can be reverted to the original behavior (enable
11490 ALL GPEs at runtime) via a runtime flag.
11492 Fixed a problem where aliased control methods could not access objects
11493 properly. The proper scope within the namespace was not initialized
11494 (transferred to the target of the aliased method) before executing the
11497 Fixed a potential race condition on internal object deletion on the
11499 object in AcpiEvaluateObject.
11501 Integrated a fix for resource descriptors where both _MEM and _MTP were
11502 being extracted instead of just _MEM. (i.e. bitmask was incorrectly too
11503 wide, 0x0F instead of 0x03.)
11505 Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName,
11508 fault in some cases.
11510 Updated Notify() values for debug statements in evmisc.c
11512 Return proper status from AcpiUtMutexInitialize, not just simply AE_OK.
11514 Code and Data Size: Current and previous core subsystem library sizes are
11515 shown below. These are the code and data sizes for the acpica.lib
11517 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11518 any ACPI driver or OSPM code. The debug version of the code includes the
11519 debug output trace mechanism and has a much larger code and data size.
11521 that these values will vary depending on the efficiency of the compiler
11523 the compiler options used during generation.
11527 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
11528 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
11530 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
11531 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
11533 ----------------------------------------
11534 11 March 2004. Summary of changes for version 20040311:
11536 1) ACPI CA Core Subsystem:
11538 Fixed a problem where errors occurring during the parse phase of control
11539 method execution did not abort cleanly. For example, objects created and
11540 installed in the namespace were not deleted. This caused all subsequent
11541 invocations of the method to return the AE_ALREADY_EXISTS exception.
11543 Implemented a mechanism to force a control method to "Serialized"
11545 if the method attempts to create namespace objects. (The root of the
11546 AE_ALREADY_EXISTS problem.)
11548 Implemented support for the predefined _OSI "internal" control method.
11549 Initial supported strings are "Linux", "Windows 2000", "Windows 2001",
11551 "Windows 2001.1", and can be easily upgraded for new strings as
11553 This feature will allow "other" operating systems to execute the fully
11554 tested, "Windows" code path through the ASL code
11556 Global Lock Support: Now allows multiple acquires and releases with any
11557 internal thread. Removed concept of "owning thread" for this special
11560 Fixed two functions that were inappropriately declaring large objects on
11562 CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage
11564 method execution considerably.
11566 Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the
11567 S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT.
11569 Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs
11570 defined on the machine.
11572 Implemented two runtime options: One to force all control method
11574 to "Serialized" to mimic Windows behavior, another to disable _OSI
11576 if it causes problems on a given machine.
11578 Code and Data Size: Current and previous core subsystem library sizes are
11579 shown below. These are the code and data sizes for the acpica.lib
11581 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11582 any ACPI driver or OSPM code. The debug version of the code includes the
11583 debug output trace mechanism and has a much larger code and data size.
11585 that these values will vary depending on the efficiency of the compiler
11587 the compiler options used during generation.
11590 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
11591 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
11593 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
11594 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
11596 2) iASL Compiler/Disassembler:
11598 Fixed an array size problem for FreeBSD that would cause the compiler to
11601 ----------------------------------------
11602 20 February 2004. Summary of changes for version 20040220:
11605 1) ACPI CA Core Subsystem:
11607 Implemented execution of _SxD methods for Device objects in the
11608 GetObjectInfo interface.
11610 Fixed calls to _SST method to pass the correct arguments.
11612 Added a call to _SST on wake to restore to "working" state.
11614 Check for End-Of-Buffer failure case in the WalkResources interface.
11616 Integrated fix for 64-bit alignment issue in acglobal.h by moving two
11617 structures to the beginning of the file.
11619 After wake, clear GPE status register(s) before enabling GPEs.
11621 After wake, clear/enable power button. (Perhaps we should clear/enable
11623 fixed events upon wake.)
11625 Fixed a couple of possible memory leaks in the Namespace manager.
11627 Integrated latest acnetbsd.h file.
11629 ----------------------------------------
11630 11 February 2004. Summary of changes for version 20040211:
11633 1) ACPI CA Core Subsystem:
11635 Completed investigation and implementation of the call-by-reference
11636 mechanism for control method arguments.
11638 Fixed a problem where a store of an object into an indexed package could
11639 fail if the store occurs within a different method than the method that
11640 created the package.
11642 Fixed a problem where the ToDecimal operator could return incorrect
11645 Fixed a problem where the CopyObject operator could fail on some of the
11647 obscure objects (e.g., Reference objects.)
11649 Improved the output of the Debug object to display buffer, package, and
11652 Fixed a problem where constructs of the form "RefOf (ArgX)" did not
11654 the expected result.
11656 Added permanent ACPI_REPORT_ERROR macros for all instances of the
11657 ACPI_AML_INTERNAL exception.
11659 Integrated latest version of acfreebsd.h
11661 ----------------------------------------
11662 16 January 2004. Summary of changes for version 20040116:
11664 The purpose of this release is primarily to update the copyright years in
11665 each module, thus causing a huge number of diffs. There are a few small
11666 functional changes, however.
11668 1) ACPI CA Core Subsystem:
11670 Improved error messages when there is a problem finding one or more of
11672 required base ACPI tables
11674 Reintroduced the definition of APIC_HEADER in actbl.h
11676 Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h)
11678 Removed extraneous reference to NewObj in dsmthdat.c
11682 Fixed a problem introduced in December that disabled the correct
11684 of Resource Templates
11687 ----------------------------------------
11688 03 December 2003. Summary of changes for version 20031203:
11690 1) ACPI CA Core Subsystem:
11692 Changed the initialization of Operation Regions during subsystem
11693 init to perform two entire walks of the ACPI namespace; The first
11694 to initialize the regions themselves, the second to execute the
11695 _REG methods. This fixed some interdependencies across _REG
11696 methods found on some machines.
11698 Fixed a problem where a Store(Local0, Local1) could simply update
11699 the object reference count, and not create a new copy of the
11700 object if the Local1 is uninitialized.
11702 Implemented support for the _SST reserved method during sleep
11705 Implemented support to clear the SLP_TYP and SLP_EN bits when
11706 waking up, this is apparently required by some machines.
11708 When sleeping, clear the wake status only if SleepState is not S5.
11710 Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect
11711 pointer arithmetic advanced a string pointer too far.
11713 Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer
11714 could be returned if the requested table has not been loaded.
11716 Within the support for IRQ resources, restructured the handling of
11717 the active and edge/level bits.
11719 Fixed a few problems in AcpiPsxExecute() where memory could be
11720 leaked under certain error conditions.
11722 Improved error messages for the cases where the ACPI mode could
11725 Code and Data Size: Current and previous core subsystem library
11726 sizes are shown below. These are the code and data sizes for the
11727 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
11728 these values do not include any ACPI driver or OSPM code. The
11729 debug version of the code includes the debug output trace
11730 mechanism and has a much larger code and data size. Note that
11731 these values will vary depending on the efficiency of the compiler
11732 and the compiler options used during generation.
11734 Previous Release (20031029):
11735 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
11736 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
11738 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
11739 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
11741 2) iASL Compiler/Disassembler:
11743 Implemented a fix for the iASL disassembler where a bad index was
11744 generated. This was most noticeable on 64-bit platforms
11747 ----------------------------------------
11748 29 October 2003. Summary of changes for version 20031029:
11750 1) ACPI CA Core Subsystem:
11753 Fixed a problem where a level-triggered GPE with an associated
11754 _Lxx control method was incorrectly cleared twice.
11756 Fixed a problem with the Field support code where an access can
11757 occur beyond the end-of-region if the field is non-aligned but
11758 extends to the very end of the parent region (resulted in an
11759 AE_AML_REGION_LIMIT exception.)
11761 Fixed a problem with ACPI Fixed Events where an RT Clock handler
11762 would not get invoked on an RTC event. The RTC event bitmasks for
11763 the PM1 registers were not being initialized properly.
11765 Implemented support for executing _STA and _INI methods for
11766 Processor objects. Although this is currently not part of the
11767 ACPI specification, there is existing ASL code that depends on the
11768 init-time execution of these methods.
11770 Implemented and deployed a GetDescriptorName function to decode
11771 the various types of internal descriptors. Guards against null
11772 descriptors during debug output also.
11774 Implemented and deployed a GetNodeName function to extract the 4-
11775 character namespace node name. This function simplifies the debug
11776 and error output, as well as guarding against null pointers during
11779 Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to
11780 simplify the debug and error output of 64-bit integers. This
11781 macro replaces the HIDWORD and LODWORD macros for dumping these
11784 Updated the implementation of the Stall() operator to only call
11785 AcpiOsStall(), and also return an error if the operand is larger
11786 than 255. This preserves the required behavior of not
11787 relinquishing the processor, as would happen if AcpiOsSleep() was
11788 called for "long stalls".
11790 Constructs of the form "Store(LocalX,LocalX)" where LocalX is not
11791 initialized are now treated as NOOPs.
11793 Cleaned up a handful of warnings during 64-bit generation.
11795 Fixed a reported error where and incorrect GPE number was passed
11796 to the GPE dispatch handler. This value is only used for error
11797 output, however. Used this opportunity to clean up and streamline
11798 the GPE dispatch code.
11800 Code and Data Size: Current and previous core subsystem library
11801 sizes are shown below. These are the code and data sizes for the
11802 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
11803 these values do not include any ACPI driver or OSPM code. The
11805 debug version of the code includes the debug output trace
11806 mechanism and has a much larger code and data size. Note that
11807 these values will vary depending on the efficiency of the compiler
11808 and the compiler options used during generation.
11810 Previous Release (20031002):
11811 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
11812 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
11814 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
11815 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
11818 2) iASL Compiler/Disassembler:
11820 Updated the iASL compiler to return an error if the operand to the
11821 Stall() operator is larger than 255.
11824 ----------------------------------------
11825 02 October 2003. Summary of changes for version 20031002:
11828 1) ACPI CA Core Subsystem:
11830 Fixed a problem with Index Fields where the index was not
11831 incremented for fields that require multiple writes to the
11832 index/data registers (Fields that are wider than the data
11835 Fixed a problem with all Field objects where a write could go
11836 beyond the end-of-field if the field was larger than the access
11837 granularity and therefore required multiple writes to complete the
11838 request. An extra write beyond the end of the field could happen
11841 Fixed a problem with Index Fields where a BUFFER_OVERFLOW error
11842 would incorrectly be returned if the width of the Data Register
11843 was larger than the specified field access width.
11845 Completed fixes for LoadTable() and Unload() and verified their
11846 operation. Implemented full support for the "DdbHandle" object
11847 throughout the ACPI CA subsystem.
11849 Implemented full support for the MADT and ECDT tables in the ACPI
11850 CA header files. Even though these tables are not directly
11851 consumed by ACPI CA, the header definitions are useful for ACPI
11854 Integrated resource descriptor fixes posted to the Linux ACPI
11855 list. This included checks for minimum descriptor length, and
11856 support for trailing NULL strings within descriptors that have
11857 optional string elements.
11859 Code and Data Size: Current and previous core subsystem library
11860 sizes are shown below. These are the code and data sizes for the
11861 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
11862 these values do not include any ACPI driver or OSPM code. The
11863 debug version of the code includes the debug output trace
11864 mechanism and has a much larger code and data size. Note that
11865 these values will vary depending on the efficiency of the compiler
11866 and the compiler options used during generation.
11868 Previous Release (20030918):
11869 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
11870 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
11872 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
11873 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
11878 Implemented detection of non-ASCII characters within the input
11879 source ASL file. This catches attempts to compile binary (AML)
11880 files early in the compile, with an informative error message.
11882 Fixed a problem where the disassembler would fault if the output
11883 filename could not be generated or if the output file could not be
11886 ----------------------------------------
11887 18 September 2003. Summary of changes for version 20030918:
11890 1) ACPI CA Core Subsystem:
11892 Found and fixed a longstanding problem with the late execution of
11893 the various deferred AML opcodes (such as Operation Regions,
11894 Buffer Fields, Buffers, and Packages). If the name string
11895 specified for the name of the new object placed the object in a
11896 scope other than the current scope, the initialization/execution
11897 of the opcode failed. The solution to this problem was to
11898 implement a mechanism where the late execution of such opcodes
11899 does not attempt to lookup/create the name a second time in an
11900 incorrect scope. This fixes the "region size computed
11901 incorrectly" problem.
11903 Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a
11904 Global Lock AE_BAD_PARAMETER error.
11906 Fixed several 64-bit issues with prototypes, casting and data
11909 Removed duplicate prototype from acdisasm.h
11911 Fixed an issue involving EC Operation Region Detach (Shaohua Li)
11913 Code and Data Size: Current and previous core subsystem library
11914 sizes are shown below. These are the code and data sizes for the
11915 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
11916 these values do not include any ACPI driver or OSPM code. The
11917 debug version of the code includes the debug output trace
11918 mechanism and has a much larger code and data size. Note that
11919 these values will vary depending on the efficiency of the compiler
11920 and the compiler options used during generation.
11924 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
11925 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
11927 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
11928 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
11933 Fixed the AcpiOsSleep implementation in osunixxf.c to pass the
11934 correct sleep time in seconds.
11936 ----------------------------------------
11937 14 July 2003. Summary of changes for version 20030619:
11939 1) ACPI CA Core Subsystem:
11941 Parse SSDTs in order discovered, as opposed to reverse order
11944 Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas
11951 Dynamically allocate SDT list (suggested by Andi Kleen)
11953 proc function return value cleanups (Andi Kleen)
11955 Correctly handle NMI watchdog during long stalls (Andrew Morton)
11957 Make it so acpismp=force works (reported by Andrew Morton)
11960 ----------------------------------------
11961 19 June 2003. Summary of changes for version 20030619:
11963 1) ACPI CA Core Subsystem:
11965 Fix To/FromBCD, eliminating the need for an arch-specific #define.
11967 Do not acquire a semaphore in the S5 shutdown path.
11969 Fix ex_digits_needed for 0. (Takayoshi Kochi)
11971 Fix sleep/stall code reversal. (Andi Kleen)
11973 Revert a change having to do with control method calling
11978 acpiphp update (Takayoshi Kochi)
11980 Export acpi_disabled for sonypi (Stelian Pop)
11982 Mention acpismp=force in config help
11984 Re-add acpitable.c and acpismp=force. This improves backwards
11986 compatibility and also cleans up the code to a significant degree.
11988 Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge)
11990 ----------------------------------------
11991 22 May 2003. Summary of changes for version 20030522:
11993 1) ACPI CA Core Subsystem:
11995 Found and fixed a reported problem where an AE_NOT_FOUND error
11996 occurred occasionally during _BST evaluation. This turned out to
11997 be an Owner ID allocation issue where a called method did not get
11998 a new ID assigned to it. Eventually, (after 64k calls), the Owner
11999 ID UINT16 would wraparound so that the ID would be the same as the
12000 caller's and the called method would delete the caller's
12003 Implemented extended error reporting for control methods that are
12004 aborted due to a run-time exception. Output includes the exact
12005 AML instruction that caused the method abort, a dump of the method
12006 locals and arguments at the time of the abort, and a trace of all
12007 nested control method calls.
12009 Modified the interpreter to allow the creation of buffers of zero
12010 length from the AML code. Implemented new code to ensure that no
12011 attempt is made to actually allocate a memory buffer (of length
12012 zero) - instead, a simple buffer object with a NULL buffer pointer
12013 and length zero is created. A warning is no longer issued when
12014 the AML attempts to create a zero-length buffer.
12016 Implemented a workaround for the "leading asterisk issue" in
12017 _HIDs, _UIDs, and _CIDs in the AML interpreter. One leading
12018 asterisk is automatically removed if present in any HID, UID, or
12019 CID strings. The iASL compiler will still flag this asterisk as
12022 Implemented full support for _CID methods that return a package of
12023 multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface
12024 now additionally returns a device _CID list if present. This
12025 required a change to the external interface in order to pass an
12026 ACPI_BUFFER object as a parameter since the _CID list is of
12029 Fixed a problem with the new AE_SAME_HANDLER exception where
12030 handler initialization code did not know about this exception.
12032 Code and Data Size: Current and previous core subsystem library
12033 sizes are shown below. These are the code and data sizes for the
12034 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
12035 these values do not include any ACPI driver or OSPM code. The
12036 debug version of the code includes the debug output trace
12037 mechanism and has a much larger code and data size. Note that
12038 these values will vary depending on the efficiency of the compiler
12039 and the compiler options used during generation.
12041 Previous Release (20030509):
12042 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
12043 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
12045 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
12046 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
12051 Fixed a bug in which we would reinitialize the ACPI interrupt
12052 after it was already working, thus disabling all ACPI and the IRQs
12053 for any other device sharing the interrupt. (Thanks to Stian
12056 Toshiba driver update (John Belmonte)
12058 Return only 0 or 1 for our interrupt handler status (Andrew
12064 Fixed a reported problem where multiple (nested) ElseIf()
12065 statements were not handled correctly by the compiler, resulting
12066 in incorrect warnings and incorrect AML code. This was a problem
12067 in both the ASL parser and the code generator.
12072 Added changes to existing interfaces, new exception codes, and new
12073 text concerning reference count object management versus garbage
12076 ----------------------------------------
12077 09 May 2003. Summary of changes for version 20030509.
12080 1) ACPI CA Core Subsystem:
12082 Changed the subsystem initialization sequence to hold off
12083 installation of address space handlers until the hardware has been
12084 initialized and the system has entered ACPI mode. This is because
12085 the installation of space handlers can cause _REG methods to be
12086 run. Previously, the _REG methods could potentially be run before
12087 ACPI mode was enabled.
12089 Fixed some memory leak issues related to address space handler and
12090 notify handler installation. There were some problems with the
12091 reference count mechanism caused by the fact that the handler
12092 objects are shared across several namespace objects.
12094 Fixed a reported problem where reference counts within the
12095 namespace were not properly updated when named objects created by
12096 method execution were deleted.
12098 Fixed a reported problem where multiple SSDTs caused a deletion
12099 issue during subsystem termination. Restructured the table data
12100 structures to simplify the linked lists and the related code.
12102 Fixed a problem where the table ID associated with secondary
12103 tables (SSDTs) was not being propagated into the namespace objects
12104 created by those tables. This would only present a problem for
12105 tables that are unloaded at run-time, however.
12107 Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE
12108 type as the length parameter (instead of UINT32).
12110 Solved a long-standing problem where an ALREADY_EXISTS error
12111 appears on various systems. This problem could happen when there
12112 are multiple PCI_Config operation regions under a single PCI root
12113 bus. This doesn't happen very frequently, but there are some
12114 systems that do this in the ASL.
12116 Fixed a reported problem where the internal DeleteNode function
12117 was incorrectly handling the case where a namespace node was the
12118 first in the parent's child list, and had additional peers (not
12119 the only child, but first in the list of children.)
12121 Code and Data Size: Current core subsystem library sizes are shown
12122 below. These are the code and data sizes for the acpica.lib
12123 produced by the Microsoft Visual C++ 6.0 compiler, and these
12124 values do not include any ACPI driver or OSPM code. The debug
12125 version of the code includes the debug output trace mechanism and
12126 has a much larger code and data size. Note that these values will
12127 vary depending on the efficiency of the compiler and the compiler
12128 options used during generation.
12131 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
12132 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
12134 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
12135 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
12140 Allow ":" in OS override string (Ducrot Bruno)
12142 Kobject fix (Greg KH)
12145 3 iASL Compiler/Disassembler:
12147 Fixed a problem in the generation of the C source code files (AML
12148 is emitted in C source statements for BIOS inclusion) where the
12149 Ascii dump that appears within a C comment at the end of each line
12150 could cause a compile time error if the AML sequence happens to
12151 have an open comment or close comment sequence embedded.
12154 ----------------------------------------
12155 24 April 2003. Summary of changes for version 20030424.
12158 1) ACPI CA Core Subsystem:
12160 Support for big-endian systems has been implemented. Most of the
12161 support has been invisibly added behind big-endian versions of the
12162 ACPI_MOVE_* macros.
12164 Fixed a problem in AcpiHwDisableGpeBlock() and
12165 AcpiHwClearGpeBlock() where an incorrect offset was passed to the
12166 low level hardware write routine. The offset parameter was
12167 actually eliminated from the low level read/write routines because
12168 they had become obsolete.
12170 Fixed a problem where a handler object was deleted twice during
12171 the removal of a fixed event handler.
12176 A fix for SMP systems with link devices was contributed by
12180 (2.5) Return whether we handled the interrupt in our IRQ handler.
12181 (Linux ISRs no longer return void, so we can propagate the handler
12182 return value from the ACPI CA core back to the OS.)
12188 The ACPI CA Programmer Reference has been updated to reflect new
12189 interfaces and changes to existing interfaces.
12191 ----------------------------------------
12192 28 March 2003. Summary of changes for version 20030328.
12194 1) ACPI CA Core Subsystem:
12196 The GPE Block Device support has been completed. New interfaces
12197 are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event
12198 interfaces (enable, disable, clear, getstatus) have been split
12199 into separate interfaces for Fixed Events and General Purpose
12200 Events (GPEs) in order to support GPE Block Devices properly.
12202 Fixed a problem where the error message "Failed to acquire
12203 semaphore" would appear during operations on the embedded
12206 Code and Data Size: Current core subsystem library sizes are shown
12207 below. These are the code and data sizes for the acpica.lib
12208 produced by the Microsoft Visual C++ 6.0 compiler, and these
12209 values do not include any ACPI driver or OSPM code. The debug
12210 version of the code includes the debug output trace mechanism and
12211 has a much larger code and data size. Note that these values will
12212 vary depending on the efficiency of the compiler and the compiler
12213 options used during generation.
12216 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
12217 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
12219 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
12220 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
12223 ----------------------------------------
12224 28 February 2003. Summary of changes for version 20030228.
12227 1) ACPI CA Core Subsystem:
12229 The GPE handling and dispatch code has been completely overhauled
12230 in preparation for support of GPE Block Devices (ID ACPI0006).
12231 This affects internal data structures and code only; there should
12232 be no differences visible externally. One new file has been
12235 The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only
12236 fields that are used to determine the GPE block lengths. The
12237 REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address
12238 structures are ignored. This is per the ACPI specification but it
12239 isn't very clear. The full 256 Block 0/1 GPEs are now supported
12240 (the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128).
12242 In the SCI interrupt handler, removed the read of the PM1_CONTROL
12243 register to look at the SCI_EN bit. On some machines, this read
12244 causes an SMI event and greatly slows down SCI events. (This may
12245 in fact be the cause of slow battery status response on some
12248 Fixed a problem where a store of a NULL string to a package object
12249 could cause the premature deletion of the object. This was seen
12250 during execution of the battery _BIF method on some systems,
12251 resulting in no battery data being returned.
12253 Added AcpiWalkResources interface to simplify parsing of resource
12256 Code and Data Size: Current core subsystem library sizes are shown
12257 below. These are the code and data sizes for the acpica.lib
12258 produced by the Microsoft Visual C++ 6.0 compiler, and these
12259 values do not include any ACPI driver or OSPM code. The debug
12260 version of the code includes the debug output trace mechanism and
12261 has a much larger code and data size. Note that these values will
12262 vary depending on the efficiency of the compiler and the compiler
12263 options used during generation.
12266 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
12267 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
12269 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
12270 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
12275 S3 fixes (Ole Rohne)
12277 Update ACPI PHP driver with to use new acpi_walk_resource API
12280 Add S4BIOS support (Pavel Machek)
12282 Map in entire table before performing checksum (John Stultz)
12284 Expand the mem= cmdline to allow the specification of reserved and
12285 ACPI DATA blocks (Pavel Machek)
12287 Never use ACPI on VISWS
12289 Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez)
12291 Revert a change that allowed P_BLK lengths to be 4 or 5. This is
12292 causing us to think that some systems support C2 when they really
12295 Do not count processor objects for non-present CPUs (Thanks to
12301 Fixed a problem where ASL include files could not be found and
12304 Added support for the _PDC reserved name.
12307 ----------------------------------------
12308 22 January 2003. Summary of changes for version 20030122.
12311 1) ACPI CA Core Subsystem:
12313 Added a check for constructs of the form: Store (Local0, Local0)
12314 where Local0 is not initialized. Apparently, some BIOS
12315 programmers believe that this is a NOOP. Since this store doesn't
12316 do anything anyway, the new prototype behavior will ignore this
12317 error. This is a case where we can relax the strict checking in
12318 the interpreter in the name of compatibility.
12323 The AcpiSrc Source Conversion Utility has been released with the
12324 Linux package for the first time. This is the utility that is
12325 used to convert the ACPI CA base source code to the Linux version.
12327 (Both) Handle P_BLK lengths shorter than 6 more gracefully
12329 (Both) Move more headers to include/acpi, and delete an unused
12332 (Both) Move drivers/acpi/include directory to include/acpi
12334 (Both) Boot functions don't use cmdline, so don't pass it around
12336 (Both) Remove include of unused header (Adrian Bunk)
12338 (Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since
12340 former now also includes the latter, acpiphp.h only needs the one,
12343 (2.5) Make it possible to select method of bios restoring after S3
12344 resume. [=> no more ugly ifdefs] (Pavel Machek)
12346 (2.5) Make proc write interfaces work (Pavel Machek)
12348 (2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski)
12350 (2.5) Break out ACPI Perf code into its own module, under cpufreq
12351 (Dominik Brodowski)
12353 (2.4) S4BIOS support (Ducrot Bruno)
12355 (2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio
12361 Added support to disassemble SSDT and PSDTs.
12363 Implemented support to obtain SSDTs from the Windows registry if
12367 ----------------------------------------
12368 09 January 2003. Summary of changes for version 20030109.
12370 1) ACPI CA Core Subsystem:
12372 Changed the behavior of the internal Buffer-to-String conversion
12373 function. The current ACPI specification states that the contents
12374 of the buffer are "converted to a string of two-character
12375 hexadecimal numbers, each separated by a space". Unfortunately,
12376 this definition is not backwards compatible with existing ACPI 1.0
12377 implementations (although the behavior was not defined in the ACPI
12378 1.0 specification). The new behavior simply copies data from the
12379 buffer to the string until a null character is found or the end of
12380 the buffer is reached. The new String object is always null
12381 terminated. This problem was seen during the generation of _BIF
12382 battery data where incorrect strings were returned for battery
12383 type, etc. This will also require an errata to the ACPI
12386 Renamed all instances of NATIVE_UINT and NATIVE_INT to
12387 ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively.
12389 Copyright in all module headers (both Linux and non-Linux) has be
12392 Code and Data Size: Current core subsystem library sizes are shown
12393 below. These are the code and data sizes for the acpica.lib
12394 produced by the Microsoft Visual C++ 6.0 compiler, and these
12395 values do not include any ACPI driver or OSPM code. The debug
12396 version of the code includes the debug output trace mechanism and
12397 has a much larger code and data size. Note that these values will
12398 vary depending on the efficiency of the compiler and the compiler
12399 options used during generation.
12402 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
12403 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
12405 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
12406 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
12411 Fixed an oops on module insertion/removal (Matthew Tippett)
12413 (2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante)
12415 (2.5) Replace pr_debug (Randy Dunlap)
12417 (2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski)
12419 (Both) Eliminate spawning of thread from timer callback, in favor
12422 (Both) Show Lid status in /proc (Zdenek OGAR Skalak)
12424 (Both) Added define for Fixed Function HW region (Matthew Wilcox)
12426 (Both) Add missing statics to button.c (Pavel Machek)
12428 Several changes have been made to the source code translation
12429 utility that generates the Linux Code in order to make the code
12432 All typedefs on structs and unions have been removed in keeping
12433 with the Linux coding style.
12435 Removed the non-Linux SourceSafe module revision number from each
12438 Completed major overhaul of symbols to be lowercased for linux.
12439 Doubled the number of symbols that are lowercased.
12441 Fixed a problem where identifiers within procedure headers and
12442 within quotes were not fully lower cased (they were left with a
12445 Some C macros whose only purpose is to allow the generation of 16-
12446 bit code are now completely removed in the Linux code, increasing
12447 readability and maintainability.
12449 ----------------------------------------
12451 12 December 2002. Summary of changes for version 20021212.
12454 1) ACPI CA Core Subsystem:
12456 Fixed a problem where the creation of a zero-length AML Buffer
12457 would cause a fault.
12459 Fixed a problem where a Buffer object that pointed to a static AML
12460 buffer (in an ACPI table) could inadvertently be deleted, causing
12463 Fixed a problem where a user buffer (passed in to the external
12464 ACPI CA interfaces) could be overwritten if the buffer was too
12465 small to complete the operation, causing memory corruption.
12467 Fixed a problem in the Buffer-to-String conversion code where a
12468 string of length one was always returned, regardless of the size
12469 of the input Buffer object.
12471 Removed the NATIVE_CHAR data type across the entire source due to
12472 lack of need and lack of consistent use.
12474 Code and Data Size: Current core subsystem library sizes are shown
12475 below. These are the code and data sizes for the acpica.lib
12476 produced by the Microsoft Visual C++ 6.0 compiler, and these
12477 values do not include any ACPI driver or OSPM code. The debug
12478 version of the code includes the debug output trace mechanism and
12479 has a much larger code and data size. Note that these values will
12480 vary depending on the efficiency of the compiler and the compiler
12481 options used during generation.
12484 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
12485 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
12487 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
12488 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
12491 ----------------------------------------
12492 05 December 2002. Summary of changes for version 20021205.
12494 1) ACPI CA Core Subsystem:
12496 Fixed a problem where a store to a String or Buffer object could
12497 cause corruption of the DSDT if the object type being stored was
12498 the same as the target object type and the length of the object
12499 being stored was equal to or smaller than the original (existing)
12500 target object. This was seen to cause corruption of battery _BIF
12501 buffers if the _BIF method modified the buffer on the fly.
12503 Fixed a problem where an internal error was generated if a control
12504 method invocation was used in an OperationRegion, Buffer, or
12505 Package declaration. This was caused by the deferred parsing of
12506 the control method and thus the deferred creation of the internal
12507 method object. The solution to this problem was to create the
12508 internal method object at the moment the method is encountered in
12509 the first pass - so that subsequent references to the method will
12510 able to obtain the required parameter count and thus properly
12511 parse the method invocation. This problem presented itself as an
12512 AE_AML_INTERNAL during the pass 1 parse phase during table load.
12514 Fixed a problem where the internal String object copy routine did
12515 not always allocate sufficient memory for the target String object
12516 and caused memory corruption. This problem was seen to cause
12517 "Allocation already present in list!" errors as memory allocation
12520 Implemented a new function for the evaluation of namespace objects
12521 that allows the specification of the allowable return object
12522 types. This simplifies a lot of code that checks for a return
12523 object of one or more specific objects returned from the
12524 evaluation (such as _STA, etc.) This may become and external
12525 function if it would be useful to ACPI-related drivers.
12527 Completed another round of prefixing #defines with "ACPI_" for
12530 Completed additional code restructuring to allow more modular
12531 linking for iASL compiler and AcpiExec. Several files were split
12532 creating new files. New files: nsparse.c dsinit.c evgpe.c
12534 Implemented an abort mechanism to terminate an executing control
12535 method via the AML debugger. This feature is useful for debugging
12536 control methods that depend (wait) for specific hardware
12539 Code and Data Size: Current core subsystem library sizes are shown
12540 below. These are the code and data sizes for the acpica.lib
12541 produced by the Microsoft Visual C++ 6.0 compiler, and these
12542 values do not include any ACPI driver or OSPM code. The debug
12543 version of the code includes the debug output trace mechanism and
12544 has a much larger code and data size. Note that these values will
12545 vary depending on the efficiency of the compiler and the compiler
12546 options used during generation.
12549 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
12550 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
12552 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
12553 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
12556 2) iASL Compiler/Disassembler
12558 Fixed a compiler code generation problem for "Interrupt" Resource
12559 Descriptors. If specified in the ASL, the optional "Resource
12560 Source Index" and "Resource Source" fields were not inserted into
12561 the correct location within the AML resource descriptor, creating
12562 an invalid descriptor.
12564 Fixed a disassembler problem for "Interrupt" resource descriptors.
12565 The optional "Resource Source Index" and "Resource Source" fields
12569 ----------------------------------------
12570 22 November 2002. Summary of changes for version 20021122.
12573 1) ACPI CA Core Subsystem:
12575 Fixed a reported problem where an object stored to a Method Local
12576 or Arg was not copied to a new object during the store - the
12577 object pointer was simply copied to the Local/Arg. This caused
12578 all subsequent operations on the Local/Arg to also affect the
12579 original source of the store operation.
12581 Fixed a problem where a store operation to a Method Local or Arg
12582 was not completed properly if the Local/Arg contained a reference
12583 (from RefOf) to a named field. The general-purpose store-to-
12584 namespace-node code is now used so that this case is handled
12587 Fixed a problem where the internal object copy routine would cause
12588 a protection fault if the object being copied was a Package and
12589 contained either 1) a NULL package element or 2) a nested sub-
12592 Fixed a problem with the GPE initialization that resulted from an
12593 ambiguity in the ACPI specification. One section of the
12594 specification states that both the address and length of the GPE
12595 block must be zero if the block is not supported. Another section
12596 implies that only the address need be zero if the block is not
12597 supported. The code has been changed so that both the address and
12598 the length must be non-zero to indicate a valid GPE block (i.e.,
12599 if either the address or the length is zero, the GPE block is
12602 Code and Data Size: Current core subsystem library sizes are shown
12603 below. These are the code and data sizes for the acpica.lib
12604 produced by the Microsoft Visual C++ 6.0 compiler, and these
12605 values do not include any ACPI driver or OSPM code. The debug
12606 version of the code includes the debug output trace mechanism and
12607 has a much larger code and data size. Note that these values will
12608 vary depending on the efficiency of the compiler and the compiler
12609 options used during generation.
12612 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
12613 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
12615 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
12616 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
12621 Cleaned up EC driver. Exported an external EC read/write
12622 interface. By going through this, other drivers (most notably
12623 sonypi) will be able to serialize access to the EC.
12626 3) iASL Compiler/Disassembler
12628 Implemented support to optionally generate include files for both
12629 ASM and C (the -i switch). This simplifies BIOS development by
12630 automatically creating include files that contain external
12631 declarations for the symbols that are created within the
12633 (optionally generated) ASM and C AML source files.
12636 ----------------------------------------
12637 15 November 2002. Summary of changes for version 20021115.
12639 1) ACPI CA Core Subsystem:
12641 Fixed a memory leak problem where an error during resolution of
12643 method arguments during a method invocation from another method
12644 failed to cleanup properly by deleting all successfully resolved
12647 Fixed a problem where the target of the Index() operator was not
12648 correctly constructed if the source object was a package. This
12649 problem has not been detected because the use of a target operand
12650 with Index() is very rare.
12652 Fixed a problem with the Index() operator where an attempt was
12653 made to delete the operand objects twice.
12655 Fixed a problem where an attempt was made to delete an operand
12656 twice during execution of the CondRefOf() operator if the target
12659 Implemented the first of perhaps several internal create object
12660 functions that create and initialize a specific object type. This
12661 consolidates duplicated code wherever the object is created, thus
12662 shrinking the size of the subsystem.
12664 Implemented improved debug/error messages for errors that occur
12665 during nested method invocations. All executing method pathnames
12666 are displayed (with the error) as the call stack is unwound - thus
12669 Fixed a problem introduced in the 10/02 release that caused
12670 premature deletion of a buffer object if a buffer was used as an
12671 ASL operand where an integer operand is required (Thus causing an
12672 implicit object conversion from Buffer to Integer.) The change in
12673 the 10/02 release was attempting to fix a memory leak (albeit
12676 Code and Data Size: Current core subsystem library sizes are shown
12677 below. These are the code and data sizes for the acpica.lib
12678 produced by the Microsoft Visual C++ 6.0 compiler, and these
12679 values do not include any ACPI driver or OSPM code. The debug
12680 version of the code includes the debug output trace mechanism and
12681 has a much larger code and data size. Note that these values will
12682 vary depending on the efficiency of the compiler and the compiler
12683 options used during generation.
12686 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
12687 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
12689 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
12690 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
12695 Changed the implementation of the ACPI semaphores to use down()
12696 instead of down_interruptable(). It is important that the
12697 execution of ACPI control methods not be interrupted by signals.
12698 Methods must run to completion, or the system may be left in an
12699 unknown/unstable state.
12701 Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set.
12705 3) iASL Compiler/Disassembler
12708 Changed the default location of output files. All output files
12709 are now placed in the current directory by default instead of in
12710 the directory of the source file. This change may affect some
12711 existing makefiles, but it brings the behavior of the compiler in
12712 line with other similar tools. The location of the output files
12713 can be overridden with the -p command line switch.
12716 ----------------------------------------
12717 11 November 2002. Summary of changes for version 20021111.
12720 0) ACPI Specification 2.0B is released and is now available at:
12721 http://www.acpi.info/index.html
12724 1) ACPI CA Core Subsystem:
12726 Implemented support for the ACPI 2.0 SMBus Operation Regions.
12727 This includes the early detection and handoff of the request to
12728 the SMBus region handler (avoiding all of the complex field
12729 support code), and support for the bidirectional return packet
12730 from an SMBus write operation. This paves the way for the
12731 development of SMBus drivers in each host operating system.
12733 Fixed a problem where the semaphore WAIT_FOREVER constant was
12734 defined as 32 bits, but must be 16 bits according to the ACPI
12735 specification. This had the side effect of causing ASL
12736 Mutex/Event timeouts even though the ASL code requested a wait
12737 forever. Changed all internal references to the ACPI timeout
12738 parameter to 16 bits to prevent future problems. Changed the name
12739 of WAIT_FOREVER to ACPI_WAIT_FOREVER.
12741 Code and Data Size: Current core subsystem library sizes are shown
12742 below. These are the code and data sizes for the acpica.lib
12743 produced by the Microsoft Visual C++ 6.0 compiler, and these
12744 values do not include any ACPI driver or OSPM code. The debug
12745 version of the code includes the debug output trace mechanism and
12746 has a much larger code and data size. Note that these values will
12747 vary depending on the efficiency of the compiler and the compiler
12748 options used during generation.
12751 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
12752 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
12754 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
12755 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
12760 Module loading/unloading fixes (John Cagle)
12763 3) iASL Compiler/Disassembler
12765 Added support for the SMBBlockProcessCall keyword (ACPI 2.0)
12767 Implemented support for the disassembly of all SMBus protocol
12768 keywords (SMBQuick, SMBWord, etc.)
12770 ----------------------------------------
12771 01 November 2002. Summary of changes for version 20021101.
12774 1) ACPI CA Core Subsystem:
12776 Fixed a problem where platforms that have a GPE1 block but no GPE0
12777 block were not handled correctly. This resulted in a "GPE
12778 overlap" error message. GPE0 is no longer required.
12780 Removed code added in the previous release that inserted nodes
12781 into the namespace in alphabetical order. This caused some side-
12782 effects on various machines. The root cause of the problem is
12783 still under investigation since in theory, the internal ordering
12784 of the namespace nodes should not matter.
12787 Enhanced error reporting for the case where a named object is not
12788 found during control method execution. The full ACPI namepath
12789 (name reference) of the object that was not found is displayed in
12792 Note: as a result of the overhaul of the namespace object types in
12793 the previous release, the namespace nodes for the predefined
12794 scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE
12795 instead of ACPI_TYPE_ANY. This simplifies the namespace
12796 management code but may affect code that walks the namespace tree
12797 looking for specific object types.
12799 Code and Data Size: Current core subsystem library sizes are shown
12800 below. These are the code and data sizes for the acpica.lib
12801 produced by the Microsoft Visual C++ 6.0 compiler, and these
12802 values do not include any ACPI driver or OSPM code. The debug
12803 version of the code includes the debug output trace mechanism and
12804 has a much larger code and data size. Note that these values will
12805 vary depending on the efficiency of the compiler and the compiler
12806 options used during generation.
12809 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
12810 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
12812 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
12813 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
12818 Fixed a problem introduced in the previous release where the
12819 Processor and Thermal objects were not recognized and installed in
12820 /proc. This was related to the scope type change described above.
12823 3) iASL Compiler/Disassembler
12825 Implemented the -g option to get all of the required ACPI tables
12826 from the registry and save them to files (Windows version of the
12827 compiler only.) The required tables are the FADT, FACS, and DSDT.
12829 Added ACPI table checksum validation during table disassembly in
12830 order to catch corrupted tables.
12833 ----------------------------------------
12834 22 October 2002. Summary of changes for version 20021022.
12836 1) ACPI CA Core Subsystem:
12838 Implemented a restriction on the Scope operator that the target
12839 must already exist in the namespace at the time the operator is
12840 encountered (during table load or method execution). In other
12841 words, forward references are not allowed and Scope() cannot
12842 create a new object. This changes the previous behavior where the
12843 interpreter would create the name if not found. This new behavior
12844 correctly enables the search-to-root algorithm during namespace
12845 lookup of the target name. Because of this upsearch, this fixes
12846 the known Compaq _SB_.OKEC problem and makes both the AML
12847 interpreter and iASL compiler compatible with other ACPI
12850 Completed a major overhaul of the internal ACPI object types for
12851 the ACPI Namespace and the associated operand objects. Many of
12852 these types had become obsolete with the introduction of the two-
12853 pass namespace load. This cleanup simplifies the code and makes
12854 the entire namespace load mechanism much clearer and easier to
12857 Improved debug output for tracking scope opening/closing to help
12858 diagnose scoping issues. The old scope name as well as the new
12859 scope name are displayed. Also improved error messages for
12860 problems with ASL Mutex objects and error messages for GPE
12863 Cleaned up the namespace dump code, removed obsolete code.
12865 All string output (for all namespace/object dumps) now uses the
12866 common ACPI string output procedure which handles escapes properly
12867 and does not emit non-printable characters.
12869 Fixed some issues with constants in the 64-bit version of the
12870 local C library (utclib.c)
12875 EC Driver: No longer attempts to acquire the Global Lock at
12879 3) iASL Compiler/Disassembler
12881 Implemented ACPI 2.0B grammar change that disallows all Type 1 and
12882 2 opcodes outside of a control method. This means that the
12883 "executable" operators (versus the "namespace" operators) cannot
12884 be used at the table level; they can only be used within a control
12887 Implemented the restriction on the Scope() operator where the
12888 target must already exist in the namespace at the time the
12889 operator is encountered (during ASL compilation). In other words,
12890 forward references are not allowed and Scope() cannot create a new
12891 object. This makes the iASL compiler compatible with other ACPI
12892 implementations and makes the Scope() implementation adhere to the
12893 ACPI specification.
12895 Fixed a problem where namepath optimization for the Alias operator
12896 was optimizing the wrong path (of the two namepaths.) This caused
12897 a "Missing alias link" error message.
12899 Fixed a problem where an "unknown reserved name" warning could be
12900 incorrectly generated for names like "_SB" when the trailing
12901 underscore is not used in the original ASL.
12903 Fixed a problem where the reserved name check did not handle
12904 NamePaths with multiple NameSegs correctly. The first nameseg of
12905 the NamePath was examined instead of the last NameSeg.
12908 ----------------------------------------
12910 02 October 2002. Summary of changes for this release.
12913 1) ACPI CA Core Subsystem version 20021002:
12915 Fixed a problem where a store/copy of a string to an existing
12916 string did not always set the string length properly in the String
12919 Fixed a reported problem with the ToString operator where the
12920 behavior was identical to the ToHexString operator instead of just
12921 simply converting a raw buffer to a string data type.
12923 Fixed a problem where CopyObject and the other "explicit"
12924 conversion operators were not updating the internal namespace node
12925 type as part of the store operation.
12927 Fixed a memory leak during implicit source operand conversion
12928 where the original object was not deleted if it was converted to a
12929 new object of a different type.
12931 Enhanced error messages for all problems associated with namespace
12932 lookups. Common procedure generates and prints the lookup name as
12933 well as the formatted status.
12935 Completed implementation of a new design for the Alias support
12936 within the namespace. The existing design did not handle the case
12937 where a new object was assigned to one of the two names due to the
12938 use of an explicit conversion operator, resulting in the two names
12939 pointing to two different objects. The new design simply points
12940 the Alias name to the original name node - not to the object.
12941 This results in a level of indirection that must be handled in the
12942 name resolution mechanism.
12944 Code and Data Size: Current core subsystem library sizes are shown
12945 below. These are the code and data sizes for the acpica.lib
12946 produced by the Microsoft Visual C++ 6.0 compiler, and these
12947 values do not include any ACPI driver or OSPM code. The debug
12948 version of the code includes the debug output trace mechanism and
12949 has a larger code and data size. Note that these values will vary
12950 depending on the efficiency of the compiler and the compiler
12951 options used during generation.
12954 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
12955 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
12957 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
12958 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
12963 Initialize thermal driver's timer before it is used. (Knut
12966 Allow handling negative celsius values. (Kochi Takayoshi)
12968 Fix thermal management and make trip points. R/W (Pavel Machek)
12970 Fix /proc/acpi/sleep. (P. Christeas)
12972 IA64 fixes. (David Mosberger)
12974 Fix reversed logic in blacklist code. (Sergio Monteiro Basto)
12976 Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik
12980 3) iASL Compiler/Disassembler
12982 Clarified some warning/error messages.
12985 ----------------------------------------
12986 18 September 2002. Summary of changes for this release.
12989 1) ACPI CA Core Subsystem version 20020918:
12991 Fixed a reported problem with reference chaining (via the Index()
12992 and RefOf() operators) in the ObjectType() and SizeOf() operators.
12993 The definition of these operators includes the dereferencing of
12994 all chained references to return information on the base object.
12996 Fixed a problem with stores to indexed package elements - the
12997 existing code would not complete the store if an "implicit
12998 conversion" was not performed. In other words, if the existing
12999 object (package element) was to be replaced completely, the code
13000 didn't handle this case.
13002 Relaxed typechecking on the ASL "Scope" operator to allow the
13003 target name to refer to an object of type Integer, String, or
13004 Buffer, in addition to the scoping object types (Device,
13005 predefined Scopes, Processor, PowerResource, and ThermalZone.)
13006 This allows existing AML code that has workarounds for a bug in
13007 Windows to function properly. A warning is issued, however. This
13008 affects both the AML interpreter and the iASL compiler. Below is
13009 an example of this type of ASL code:
13015 Fixed some reported problems with 64-bit integer support in the
13016 local implementation of C library functions (clib.c)
13021 Use ACPI fix map region instead of IOAPIC region, since it is
13022 undefined in non-SMP.
13024 Ensure that the SCI has the proper polarity and trigger, even on
13025 systems that do not have an interrupt override entry in the MADT.
13027 2.5 big driver reorganization (Pat Mochel)
13029 Use early table mapping code from acpitable.c (Andi Kleen)
13031 New blacklist entries (Andi Kleen)
13033 Blacklist improvements. Split blacklist code out into a separate
13034 file. Move checking the blacklist to very early. Previously, we
13035 would use ACPI tables, and then halfway through init, check the
13036 blacklist -- too late. Now, it's early enough to completely fall-
13040 3) iASL Compiler/Disassembler version 20020918:
13042 Fixed a problem where the typechecking code didn't know that an
13043 alias could point to a method. In other words, aliases were not
13044 being dereferenced during typechecking.
13047 ----------------------------------------
13048 29 August 2002. Summary of changes for this release.
13050 1) ACPI CA Core Subsystem Version 20020829:
13052 If the target of a Scope() operator already exists, it must be an
13053 object type that actually opens a scope -- such as a Device,
13054 Method, Scope, etc. This is a fatal runtime error. Similar error
13055 check has been added to the iASL compiler also.
13057 Tightened up the namespace load to disallow multiple names in the
13058 same scope. This previously was allowed if both objects were of
13059 the same type. (i.e., a lookup was the same as entering a new
13065 Ensure that the ACPI interrupt has the proper trigger and
13068 local_irq_disable is extraneous. (Matthew Wilcox)
13070 Make "acpi=off" actually do what it says, and not use the ACPI
13071 interpreter *or* the tables.
13073 Added arch-neutral support for parsing SLIT and SRAT tables (Kochi
13077 3) iASL Compiler/Disassembler Version 20020829:
13079 Implemented namepath optimization for name declarations. For
13080 example, a declaration like "Method (\_SB_.ABCD)" would get
13081 optimized to "Method (ABCD)" if the declaration is within the
13082 \_SB_ scope. This optimization is in addition to the named
13083 reference path optimization first released in the previous
13084 version. This would seem to complete all possible optimizations
13085 for namepaths within the ASL/AML.
13087 If the target of a Scope() operator already exists, it must be an
13088 object type that actually opens a scope -- such as a Device,
13089 Method, Scope, etc.
13091 Implemented a check and warning for unreachable code in the same
13092 block below a Return() statement.
13094 Fixed a problem where the listing file was not generated if the
13095 compiler aborted if the maximum error count was exceeded (200).
13097 Fixed a problem where the typechecking of method return values was
13098 broken. This includes the check for a return value when the
13099 method is invoked as a TermArg (a return value is expected.)
13101 Fixed a reported problem where EOF conditions during a quoted
13102 string or comment caused a fault.
13105 ----------------------------------------
13106 15 August 2002. Summary of changes for this release.
13108 1) ACPI CA Core Subsystem Version 20020815:
13110 Fixed a reported problem where a Store to a method argument that
13111 contains a reference did not perform the indirect store correctly.
13112 This problem was created during the conversion to the new
13113 reference object model - the indirect store to a method argument
13114 code was not updated to reflect the new model.
13116 Reworked the ACPI mode change code to better conform to ACPI 2.0,
13117 handle corner cases, and improve code legibility (Kochi Takayoshi)
13119 Fixed a problem with the pathname parsing for the carat (^)
13120 prefix. The heavy use of the carat operator by the new namepath
13121 optimization in the iASL compiler uncovered a problem with the AML
13122 interpreter handling of this prefix. In the case where one or
13123 more carats precede a single nameseg, the nameseg was treated as
13124 standalone and the search rule (to root) was inadvertently
13125 applied. This could cause both the iASL compiler and the
13126 interpreter to find the wrong object or to miss the error that
13127 should occur if the object does not exist at that exact pathname.
13129 Found and fixed the problem where the HP Pavilion DSDT would not
13130 load. This was a relatively minor tweak to the table loading code
13131 (a problem caused by the unexpected encounter with a method
13132 invocation not within a control method), but it does not solve the
13133 overall issue of the execution of AML code at the table level.
13134 This investigation is still ongoing.
13136 Code and Data Size: Current core subsystem library sizes are shown
13137 below. These are the code and data sizes for the acpica.lib
13138 produced by the Microsoft Visual C++ 6.0 compiler, and these
13139 values do not include any ACPI driver or OSPM code. The debug
13140 version of the code includes the debug output trace mechanism and
13141 has a larger code and data size. Note that these values will vary
13142 depending on the efficiency of the compiler and the compiler
13143 options used during generation.
13146 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
13147 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
13149 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
13150 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
13155 Remove redundant slab.h include (Brad Hards)
13157 Fix several bugs in thermal.c (Herbert Nachtnebel)
13159 Make CONFIG_ACPI_BOOT work properly (Pavel Machek)
13161 Change acpi_system_suspend to use updated irq functions (Pavel
13164 Export acpi_get_firmware_table (Matthew Wilcox)
13166 Use proper root proc entry for ACPI (Kochi Takayoshi)
13168 Fix early-boot table parsing (Bjorn Helgaas)
13171 3) iASL Compiler/Disassembler
13173 Reworked the compiler options to make them more consistent and to
13174 use two-letter options where appropriate. We were running out of
13175 sensible letters. This may break some makefiles, so check the
13176 current options list by invoking the compiler with no parameters.
13178 Completed the design and implementation of the ASL namepath
13179 optimization option for the compiler. This option optimizes all
13180 references to named objects to the shortest possible path. The
13181 first attempt tries to utilize a single nameseg (4 characters) and
13182 the "search-to-root" algorithm used by the interpreter. If that
13183 cannot be used (because either the name is not in the search path
13184 or there is a conflict with another object with the same name),
13185 the pathname is optimized using the carat prefix (usually a
13186 shorter string than specifying the entire path from the root.)
13188 Implemented support to obtain the DSDT from the Windows registry
13189 (when the disassembly option is specified with no input file).
13190 Added this code as the implementation for AcpiOsTableOverride in
13191 the Windows OSL. Migrated the 16-bit code (used in the AcpiDump
13192 utility) to scan memory for the DSDT to the AcpiOsTableOverride
13193 function in the DOS OSL to make the disassembler truly OS
13196 Implemented a new option to disassemble and compile in one step.
13197 When used without an input filename, this option will grab the
13198 DSDT from the local machine, disassemble it, and compile it in one
13201 Added a warning message for invalid escapes (a backslash followed
13202 by any character other than the allowable escapes). This catches
13203 the quoted string error "\_SB_" (which should be "\\_SB_" ).
13205 Also, there are numerous instances in the ACPI specification where
13208 Added a compiler option to disable all optimizations. This is
13209 basically the "compatibility mode" because by using this option,
13210 the AML code will come out exactly the same as other ASL
13213 Added error messages for incorrectly ordered dependent resource
13214 functions. This includes: missing EndDependentFn macro at end of
13215 dependent resource list, nested dependent function macros (both
13216 start and end), and missing StartDependentFn macro. These are
13217 common errors that should be caught at compile time.
13219 Implemented _OSI support for the disassembler and compiler. _OSI
13220 must be included in the namespace for proper disassembly (because
13221 the disassembler must know the number of arguments.)
13223 Added an "optimization" message type that is optional (off by
13224 default). This message is used for all optimizations - including
13225 constant folding, integer optimization, and namepath optimization.
13227 ----------------------------------------
13228 25 July 2002. Summary of changes for this release.
13231 1) ACPI CA Core Subsystem Version 20020725:
13233 The AML Disassembler has been enhanced to produce compilable ASL
13234 code and has been integrated into the iASL compiler (see below) as
13235 well as the single-step disassembly for the AML debugger and the
13236 disassembler for the AcpiDump utility. All ACPI 2.0A opcodes,
13237 resource templates and macros are fully supported. The
13238 disassembler has been tested on over 30 different AML files,
13239 producing identical AML when the resulting disassembled ASL file
13240 is recompiled with the same ASL compiler.
13242 Modified the Resource Manager to allow zero interrupts and zero
13243 dma channels during the GetCurrentResources call. This was
13244 causing problems on some platforms.
13246 Added the AcpiOsRedirectOutput interface to the OSL to simplify
13247 output redirection for the AcpiOsPrintf and AcpiOsVprintf
13250 Code and Data Size: Current core subsystem library sizes are shown
13251 below. These are the code and data sizes for the acpica.lib
13252 produced by the Microsoft Visual C++ 6.0 compiler, and these
13253 values do not include any ACPI driver or OSPM code. The debug
13254 version of the code includes the debug output trace mechanism and
13255 has a larger code and data size. Note that these values will vary
13256 depending on the efficiency of the compiler and the compiler
13257 options used during generation.
13260 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
13261 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
13263 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
13264 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
13269 Fixed a panic in the EC driver (Dominik Brodowski)
13271 Implemented checksum of the R/XSDT itself during Linux table scan
13277 The AML disassembler is integrated into the compiler. The "-d"
13278 option invokes the disassembler to completely disassemble an
13279 input AML file, producing as output a text ASL file with the
13280 extension ".dsl" (to avoid name collisions with existing .asl
13281 source files.) A future enhancement will allow the disassembler
13282 to obtain the BIOS DSDT from the registry under Windows.
13284 Fixed a problem with the VendorShort and VendorLong resource
13285 descriptors where an invalid AML sequence was created.
13287 Implemented a fix for BufferData term in the ASL parser. It was
13288 inadvertently defined twice, allowing invalid syntax to pass and
13289 causing reduction conflicts.
13291 Fixed a problem where the Ones opcode could get converted to a
13292 value of zero if "Ones" was used where a byte, word or dword value
13293 was expected. The 64-bit value is now truncated to the correct
13294 size with the correct value.
13298 ----------------------------------------
13299 02 July 2002. Summary of changes for this release.
13302 1) ACPI CA Core Subsystem Version 20020702:
13304 The Table Manager code has been restructured to add several new
13305 features. Tables that are not required by the core subsystem
13306 (other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer
13307 validated in any way and are returned from AcpiGetFirmwareTable if
13308 requested. The AcpiOsTableOverride interface is now called for
13309 each table that is loaded by the subsystem in order to allow the
13310 host to override any table it chooses. Previously, only the DSDT
13311 could be overridden. Added one new files, tbrsdt.c and
13314 Fixed a problem with the conversion of internal package objects to
13315 external objects (when a package is returned from a control
13316 method.) The return buffer length was set to zero instead of the
13317 proper length of the package object.
13319 Fixed a reported problem with the use of the RefOf and DeRefOf
13320 operators when passing reference arguments to control methods. A
13321 new type of Reference object is used internally for references
13322 produced by the RefOf operator.
13324 Added additional error messages in the Resource Manager to explain
13325 AE_BAD_DATA errors when they occur during resource parsing.
13327 Split the AcpiEnableSubsystem into two primitives to enable a
13328 finer granularity initialization sequence. These two calls should
13329 be called in this order: AcpiEnableSubsystem (flags),
13330 AcpiInitializeObjects (flags). The flags parameter remains the
13336 Updated the ACPI utilities module to understand the new style of
13337 fully resolved package objects that are now returned from the core
13338 subsystem. This eliminates errors of the form:
13340 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT]
13341 acpi_utils-0430 [145] acpi_evaluate_reference:
13342 Invalid element in package (not a device reference)
13344 The method evaluation utility uses the new buffer allocation
13345 scheme instead of calling AcpiEvaluate Object twice.
13347 Added support for ECDT. This allows the use of the Embedded
13349 Controller before the namespace has been fully initialized, which
13350 is necessary for ACPI 2.0 support, and for some laptops to
13351 initialize properly. (Laptops using ECDT are still rare, so only
13352 limited testing was performed of the added functionality.)
13354 Fixed memory leaks in the EC driver.
13356 Eliminated a brittle code structure in acpi_bus_init().
13358 Eliminated the acpi_evaluate() helper function in utils.c. It is
13359 no longer needed since acpi_evaluate_object can optionally
13360 allocate memory for the return object.
13362 Implemented fix for keyboard hang when getting battery readings on
13363 some systems (Stephen White)
13365 PCI IRQ routing update (Dominik Brodowski)
13367 Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC
13370 ----------------------------------------
13371 11 June 2002. Summary of changes for this release.
13374 1) ACPI CA Core Subsystem Version 20020611:
13376 Fixed a reported problem where constants such as Zero and One
13377 appearing within _PRT packages were not handled correctly within
13378 the resource manager code. Originally reported against the ASL
13379 compiler because the code generator now optimizes integers to
13380 their minimal AML representation (i.e. AML constants if possible.)
13381 The _PRT code now handles all AML constant opcodes correctly
13382 (Zero, One, Ones, Revision).
13384 Fixed a problem with the Concatenate operator in the AML
13385 interpreter where a buffer result object was incorrectly marked as
13386 not fully evaluated, causing a run-time error of AE_AML_INTERNAL.
13388 All package sub-objects are now fully resolved before they are
13389 returned from the external ACPI interfaces. This means that name
13390 strings are resolved to object handles, and constant operators
13391 (Zero, One, Ones, Revision) are resolved to Integers.
13393 Implemented immediate resolution of the AML Constant opcodes
13394 (Zero, One, Ones, Revision) to Integer objects upon detection
13395 within the AML stream. This has simplified and reduced the
13396 generated code size of the subsystem by eliminating about 10
13397 switch statements for these constants (which previously were
13398 contained in Reference objects.) The complicating issues are that
13399 the Zero opcode is used as a "placeholder" for unspecified
13400 optional target operands and stores to constants are defined to be
13403 Code and Data Size: Current core subsystem library sizes are shown
13404 below. These are the code and data sizes for the acpica.lib
13405 produced by the Microsoft Visual C++ 6.0 compiler, and these
13406 values do not include any ACPI driver or OSPM code. The debug
13407 version of the code includes the debug output trace mechanism and
13408 has a larger code and data size. Note that these values will vary
13409 depending on the efficiency of the compiler and the compiler
13410 options used during generation.
13413 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
13414 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
13416 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
13417 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
13423 Added preliminary support for obtaining _TRA data for PCI root
13424 bridges (Bjorn Helgaas).
13427 3) iASL Compiler Version X2046:
13429 Fixed a problem where the "_DDN" reserved name was defined to be a
13430 control method with one argument. There are no arguments, and
13431 _DDN does not have to be a control method.
13433 Fixed a problem with the Linux version of the compiler where the
13434 source lines printed with error messages were the wrong lines.
13435 This turned out to be the "LF versus CR/LF" difference between
13436 Windows and Unix. This appears to be the longstanding issue
13437 concerning listing output and error messages.
13439 Fixed a problem with the Linux version of compiler where opcode
13440 names within error messages were wrong. This was caused by a
13441 slight difference in the output of the Flex tool on Linux versus
13444 Fixed a problem with the Linux compiler where the hex output files
13445 contained some garbage data caused by an internal buffer overrun.
13448 ----------------------------------------
13449 17 May 2002. Summary of changes for this release.
13452 1) ACPI CA Core Subsystem Version 20020517:
13454 Implemented a workaround to an BIOS bug discovered on the HP
13455 OmniBook where the FADT revision number and the table size are
13456 inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new
13457 behavior is to fallback to using only the ACPI 1.0 fields of the
13458 FADT if the table is too small to be a ACPI 2.0 table as claimed
13459 by the revision number. Although this is a BIOS bug, this is a
13460 case where the workaround is simple enough and with no side
13461 effects, so it seemed prudent to add it. A warning message is
13464 Implemented minimum size checks for the fixed-length ACPI tables -
13465 - the FADT and FACS, as well as consistency checks between the
13466 revision number and the table size.
13468 Fixed a reported problem in the table override support where the
13469 new table pointer was incorrectly treated as a physical address
13470 instead of a logical address.
13472 Eliminated the use of the AE_AML_ERROR exception and replaced it
13473 with more descriptive codes.
13475 Fixed a problem where an exception would occur if an ASL Field was
13476 defined with no named Field Units underneath it (used by some
13479 Code and Data Size: Current core subsystem library sizes are shown
13480 below. These are the code and data sizes for the acpica.lib
13481 produced by the Microsoft Visual C++ 6.0 compiler, and these
13482 values do not include any ACPI driver or OSPM code. The debug
13483 version of the code includes the debug output trace mechanism and
13484 has a larger code and data size. Note that these values will vary
13485 depending on the efficiency of the compiler and the compiler
13486 options used during generation.
13489 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
13490 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
13492 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
13493 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
13499 Much work done on ACPI init (MADT and PCI IRQ routing support).
13500 (Paul D. and Dominik Brodowski)
13502 Fix PCI IRQ-related panic on boot (Sam Revitch)
13504 Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno)
13506 Fix "MHz" typo (Dominik Brodowski)
13508 Fix RTC year 2000 issue (Dominik Brodowski)
13510 Preclude multiple button proc entries (Eric Brunet)
13512 Moved arch-specific code out of include/platform/aclinux.h
13514 3) iASL Compiler Version X2044:
13516 Implemented error checking for the string used in the EISAID macro
13517 (Usually used in the definition of the _HID object.) The code now
13518 strictly enforces the PnP format - exactly 7 characters, 3
13519 uppercase letters and 4 hex digits.
13521 If a raw string is used in the definition of the _HID object
13522 (instead of the EISAID macro), the string must contain all
13523 alphanumeric characters (e.g., "*PNP0011" is not allowed because
13526 Implemented checking for invalid use of ACPI reserved names for
13527 most of the name creation operators (Name, Device, Event, Mutex,
13528 OperationRegion, PowerResource, Processor, and ThermalZone.)
13529 Previously, this check was only performed for control methods.
13531 Implemented an additional check on the Name operator to emit an
13532 error if a reserved name that must be implemented in ASL as a
13533 control method is used. We know that a reserved name must be a
13534 method if it is defined with input arguments.
13536 The warning emitted when a namespace object reference is not found
13537 during the cross reference phase has been changed into an error.
13538 The "External" directive should be used for names defined in other
13542 4) Tools and Utilities
13544 The 16-bit tools (adump16 and aexec16) have been regenerated and
13547 Fixed a problem with the output of both acpidump and adump16 where
13548 the indentation of closing parentheses and brackets was not
13550 aligned properly with the parent block.
13553 ----------------------------------------
13554 03 May 2002. Summary of changes for this release.
13557 1) ACPI CA Core Subsystem Version 20020503:
13559 Added support a new OSL interface that allows the host operating
13561 system software to override the DSDT found in the firmware -
13562 AcpiOsTableOverride. With this interface, the OSL can examine the
13563 version of the firmware DSDT and replace it with a different one
13566 Added new external interfaces for accessing ACPI registers from
13567 device drivers and other system software - AcpiGetRegister and
13568 AcpiSetRegister. This was simply an externalization of the
13569 existing AcpiHwBitRegister interfaces.
13571 Fixed a regression introduced in the previous build where the
13572 ASL/AML CreateField operator always returned an error,
13573 "destination must be a NS Node".
13575 Extended the maximum time (before failure) to successfully enable
13576 ACPI mode to 3 seconds.
13578 Code and Data Size: Current core subsystem library sizes are shown
13579 below. These are the code and data sizes for the acpica.lib
13580 produced by the Microsoft Visual C++ 6.0 compiler, and these
13581 values do not include any ACPI driver or OSPM code. The debug
13582 version of the code includes the debug output trace mechanism and
13583 has a larger code and data size. Note that these values will vary
13584 depending on the efficiency of the compiler and the compiler
13585 options used during generation.
13588 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
13589 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
13591 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
13592 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
13597 Enhanced ACPI init code for SMP. We are now fully MPS and $PIR-
13598 free. While 3 out of 4 of our in-house systems work fine, the last
13599 one still hangs when testing the LAPIC timer.
13601 Renamed many files in 2.5 kernel release to omit "acpi_" from the
13604 Added warning on boot for Presario 711FR.
13606 Sleep improvements (Pavel Machek)
13608 ACPI can now be built without CONFIG_PCI enabled.
13610 IA64: Fixed memory map functions (JI Lee)
13613 3) iASL Compiler Version X2043:
13615 Added support to allow the compiler to be integrated into the MS
13616 VC++ development environment for one-button compilation of single
13617 files or entire projects -- with error-to-source-line mapping.
13619 Implemented support for compile-time constant folding for the
13620 Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0
13621 specification. This allows the ASL writer to use expressions
13622 instead of Integer/Buffer/String constants in terms that must
13623 evaluate to constants at compile time and will also simplify the
13624 emitted AML in any such sub-expressions that can be folded
13625 (evaluated at compile-time.) This increases the size of the
13626 compiler significantly because a portion of the ACPI CA AML
13627 interpreter is included within the compiler in order to pre-
13628 evaluate constant expressions.
13631 Fixed a problem with the "Unicode" ASL macro that caused the
13632 compiler to fault. (This macro is used in conjunction with the
13633 _STR reserved name.)
13635 Implemented an AML opcode optimization to use the Zero, One, and
13636 Ones opcodes where possible to further reduce the size of integer
13637 constants and thus reduce the overall size of the generated AML
13640 Implemented error checking for new reserved terms for ACPI version
13643 Implemented the -qr option to display the current list of ACPI
13644 reserved names known to the compiler.
13646 Implemented the -qc option to display the current list of ASL
13647 operators that are allowed within constant expressions and can
13648 therefore be folded at compile time if the operands are constants.
13653 Updated the Programmer's Reference for new interfaces, data types,
13654 and memory allocation model options.
13656 Updated the iASL Compiler User Reference to apply new format and
13657 add information about new features and options.
13659 ----------------------------------------
13660 19 April 2002. Summary of changes for this release.
13662 1) ACPI CA Core Subsystem Version 20020419:
13664 The source code base for the Core Subsystem has been completely
13665 cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit
13666 versions. The Lint option files used are included in the
13667 /acpi/generate/lint directory.
13669 Implemented enhanced status/error checking across the entire
13670 Hardware manager subsystem. Any hardware errors (reported from
13671 the OSL) are now bubbled up and will abort a running control
13675 Fixed a problem where the per-ACPI-table integer width (32 or 64)
13676 was stored only with control method nodes, causing a fault when
13677 non-control method code was executed during table loading. The
13678 solution implemented uses a global variable to indicate table
13679 width across the entire ACPI subsystem. Therefore, ACPI CA does
13680 not support mixed integer widths across different ACPI tables
13683 Fixed a problem where NULL extended fields (X fields) in an ACPI
13684 2.0 ACPI FADT caused the table load to fail. Although the
13685 existing ACPI specification is a bit fuzzy on this topic, the new
13686 behavior is to fall back on a ACPI 1.0 field if the corresponding
13687 ACPI 2.0 X field is zero (even though the table revision indicates
13688 a full ACPI 2.0 table.) The ACPI specification will be updated to
13689 clarify this issue.
13691 Fixed a problem with the SystemMemory operation region handler
13692 where memory was always accessed byte-wise even if the AML-
13693 specified access width was larger than a byte. This caused
13694 problems on systems with memory-mapped I/O. Memory is now
13695 accessed with the width specified. On systems that do not support
13696 non-aligned transfers, a check is made to guarantee proper address
13697 alignment before proceeding in order to avoid an AML-caused
13698 alignment fault within the kernel.
13701 Fixed a problem with the ExtendedIrq resource where only one byte
13702 of the 4-byte Irq field was extracted.
13704 Fixed the AcpiExDigitsNeeded() procedure to support _UID. This
13705 function was out of date and required a rewrite.
13707 Code and Data Size: Current core subsystem library sizes are shown
13708 below. These are the code and data sizes for the acpica.lib
13709 produced by the Microsoft Visual C++ 6.0 compiler, and these
13710 values do not include any ACPI driver or OSPM code. The debug
13711 version of the code includes the debug output trace mechanism and
13712 has a larger code and data size. Note that these values will vary
13713 depending on the efficiency of the compiler and the compiler
13714 options used during generation.
13717 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
13718 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
13720 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
13721 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
13726 PCI IRQ routing fixes (Dominik Brodowski)
13729 3) iASL Compiler Version X2042:
13731 Implemented an additional compile-time error check for a field
13732 unit whose size + minimum access width would cause a run-time
13733 access beyond the end-of-region. Previously, only the field size
13734 itself was checked.
13736 The Core subsystem and iASL compiler now share a common parse
13737 object in preparation for compile-time evaluation of the type
13738 3/4/5 ASL operators.
13741 ----------------------------------------
13742 Summary of changes for this release: 03_29_02
13744 1) ACPI CA Core Subsystem Version 20020329:
13746 Implemented support for late evaluation of TermArg operands to
13747 Buffer and Package objects. This allows complex expressions to be
13748 used in the declarations of these object types.
13750 Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI
13751 1.0, if the field was larger than 32 bits, it was returned as a
13752 buffer - otherwise it was returned as an integer. In ACPI 2.0,
13753 the field is returned as a buffer only if the field is larger than
13754 64 bits. The TableRevision is now considered when making this
13755 conversion to avoid incompatibility with existing ASL code.
13757 Implemented logical addressing for AcpiOsGetRootPointer. This
13758 allows an RSDP with either a logical or physical address. With
13759 this support, the host OS can now override all ACPI tables with
13760 one logical RSDP. Includes implementation of "typed" pointer
13761 support to allow a common data type for both physical and logical
13762 pointers internally. This required a change to the
13763 AcpiOsGetRootPointer interface.
13765 Implemented the use of ACPI 2.0 Generic Address Structures for all
13766 GPE, Fixed Event, and PM Timer I/O. This allows the use of memory
13767 mapped I/O for these ACPI features.
13769 Initialization now ignores not only non-required tables (All
13770 tables other than the FADT, FACS, DSDT, and SSDTs), but also does
13771 not validate the table headers of unrecognized tables.
13773 Fixed a problem where a notify handler could only be
13774 installed/removed on an object of type Device. All "notify"
13776 objects are now supported -- Devices, Processor, Power, and
13779 Removed most verbosity from the ACPI_DB_INFO debug level. Only
13780 critical information is returned when this debug level is enabled.
13782 Code and Data Size: Current core subsystem library sizes are shown
13783 below. These are the code and data sizes for the acpica.lib
13784 produced by the Microsoft Visual C++ 6.0 compiler, and these
13785 values do not include any ACPI driver or OSPM code. The debug
13786 version of the code includes the debug output trace mechanism and
13787 has a larger code and data size. Note that these values will vary
13788 depending on the efficiency of the compiler and the compiler
13789 options used during generation.
13792 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
13793 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
13795 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
13796 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
13801 The processor driver (acpi_processor.c) now fully supports ACPI
13802 2.0-based processor performance control (e.g. Intel(R)
13803 SpeedStep(TM) technology) Note that older laptops that only have
13804 the Intel "applet" interface are not supported through this. The
13805 'limit' and 'performance' interface (/proc) are fully functional.
13806 [Note that basic policy for controlling performance state
13807 transitions will be included in the next version of ospmd.] The
13808 idle handler was modified to more aggressively use C2, and PIIX4
13809 errata handling underwent a complete overhaul (big thanks to
13810 Dominik Brodowski).
13812 Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR-
13813 based devices in the ACPI namespace are now dynamically bound
13814 (associated) with their PCI counterparts (e.g. PCI1->01:00.0).
13815 This allows, among other things, ACPI to resolve bus numbers for
13816 subordinate PCI bridges.
13818 Enhanced PCI IRQ routing to get the proper bus number for _PRT
13819 entries defined underneath PCI bridges.
13821 Added IBM 600E to bad bios list due to invalid _ADR value for
13822 PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing.
13824 In the process of adding full MADT support (e.g. IOAPIC) for IA32
13825 (acpi.c, mpparse.c) -- stay tuned.
13827 Added back visual differentiation between fixed-feature and
13828 control-method buttons in dmesg. Buttons are also subtyped (e.g.
13829 button/power/PWRF) to simplify button identification.
13831 We no longer use -Wno-unused when compiling debug. Please ignore
13832 any "_THIS_MODULE defined but not used" messages.
13834 Can now shut down the system using "magic sysrq" key.
13837 3) iASL Compiler version 2041:
13839 Fixed a problem where conversion errors for hex/octal/decimal
13840 constants were not reported.
13842 Implemented a fix for the General Register template Address field.
13843 This field was 8 bits when it should be 64.
13845 Fixed a problem where errors/warnings were no longer being emitted
13846 within the listing output file.
13848 Implemented the ACPI 2.0A restriction on ACPI Table Signatures to
13849 exactly 4 characters, alphanumeric only.
13854 ----------------------------------------
13855 Summary of changes for this release: 03_08_02
13858 1) ACPI CA Core Subsystem Version 20020308:
13860 Fixed a problem with AML Fields where the use of the "AccessAny"
13861 keyword could cause an interpreter error due to attempting to read
13862 or write beyond the end of the parent Operation Region.
13864 Fixed a problem in the SystemMemory Operation Region handler where
13865 an attempt was made to map memory beyond the end of the region.
13866 This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY"
13867 errors on some Linux systems.
13869 Fixed a problem where the interpreter/namespace "search to root"
13870 algorithm was not functioning for some object types. Relaxed the
13871 internal restriction on the search to allow upsearches for all
13872 external object types as well as most internal types.
13877 We now use safe_halt() macro versus individual calls to sti | hlt.
13879 Writing to the processor limit interface should now work. "echo 1"
13880 will increase the limit, 2 will decrease, and 0 will reset to the
13887 Fixed segfault on Linux version.
13890 ----------------------------------------
13891 Summary of changes for this release: 02_25_02
13893 1) ACPI CA Core Subsystem:
13896 Fixed a problem where the GPE bit masks were not initialized
13897 properly, causing erratic GPE behavior.
13899 Implemented limited support for multiple calling conventions. The
13900 code can be generated with either the VPL (variable parameter
13901 list, or "C") convention, or the FPL (fixed parameter list, or
13902 "Pascal") convention. The core subsystem is about 3.4% smaller
13903 when generated with FPL.
13908 Re-add some /proc/acpi/event functionality that was lost during
13911 Resolved issue with /proc events for fixed-feature buttons showing
13912 up as the system device.
13914 Fixed checks on C2/C3 latencies to be inclusive of maximum values.
13916 Replaced AE_ERRORs in acpi_osl.c with more specific error codes.
13918 Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi"
13920 Fixed limit interface & usage to fix bugs with passive cooling
13923 Restructured PRT support.
13926 ----------------------------------------
13927 Summary of changes for this label: 02_14_02
13930 1) ACPI CA Core Subsystem:
13932 Implemented support in AcpiLoadTable to allow loading of FACS and
13935 Suport for the now-obsolete interim 0.71 64-bit ACPI tables has
13936 been removed. All 64-bit platforms should be migrated to the ACPI
13937 2.0 tables. The actbl71.h header has been removed from the source
13940 All C macros defined within the subsystem have been prefixed with
13941 "ACPI_" to avoid collision with other system include files.
13943 Removed the return value for the two AcpiOsPrint interfaces, since
13944 it is never used and causes lint warnings for ignoring the return
13947 Added error checking to all internal mutex acquire and release
13948 calls. Although a failure from one of these interfaces is
13949 probably a fatal system error, these checks will cause the
13950 immediate abort of the currently executing method or interface.
13952 Fixed a problem where the AcpiSetCurrentResources interface could
13953 fault. This was a side effect of the deployment of the new memory
13956 Fixed a couple of problems with the Global Lock support introduced
13957 in the last major build. The "common" (1.0/2.0) internal FACS was
13958 being overwritten with the FACS signature and clobbering the
13959 Global Lock pointer. Also, the actual firmware FACS was being
13960 unmapped after construction of the "common" FACS, preventing
13961 access to the actual Global Lock field within it. The "common"
13962 internal FACS is no longer installed as an actual ACPI table; it
13963 is used simply as a global.
13965 Code and Data Size: Current core subsystem library sizes are shown
13966 below. These are the code and data sizes for the acpica.lib
13967 produced by the Microsoft Visual C++ 6.0 compiler, and these
13968 values do not include any ACPI driver or OSPM code. The debug
13969 version of the code includes the debug output trace mechanism and
13970 has a larger code and data size. Note that these values will vary
13971 depending on the efficiency of the compiler and the compiler
13972 options used during generation.
13974 Previous Release (02_07_01)
13975 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
13976 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
13978 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
13979 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
13984 Updated Linux-specific code for core macro and OSL interface
13985 changes described above.
13987 Improved /proc/acpi/event. It now can be opened only once and has
13988 proper poll functionality.
13990 Fixed and restructured power management (acpi_bus).
13992 Only create /proc "view by type" when devices of that class exist.
13994 Fixed "charging/discharging" bug (and others) in acpi_battery.
13996 Improved thermal zone code.
13999 3) ASL Compiler, version X2039:
14002 Implemented the new compiler restriction on ASL String hex/octal
14003 escapes to non-null, ASCII values. An error results if an invalid
14004 value is used. (This will require an ACPI 2.0 specification
14007 AML object labels that are output to the optional C and ASM source
14008 are now prefixed with both the ACPI table signature and table ID
14009 to help guarantee uniqueness within a large BIOS project.
14012 ----------------------------------------
14013 Summary of changes for this label: 02_01_02
14015 1) ACPI CA Core Subsystem:
14017 ACPI 2.0 support is complete in the entire Core Subsystem and the
14018 ASL compiler. All new ACPI 2.0 operators are implemented and all
14019 other changes for ACPI 2.0 support are complete. With
14020 simultaneous code and data optimizations throughout the subsystem,
14021 ACPI 2.0 support has been implemented with almost no additional
14022 cost in terms of code and data size.
14024 Implemented a new mechanism for allocation of return buffers. If
14025 the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will
14026 be allocated on behalf of the caller. Consolidated all return
14027 buffer validation and allocation to a common procedure. Return
14028 buffers will be allocated via the primary OSL allocation interface
14029 since it appears that a separate pool is not needed by most users.
14030 If a separate pool is required for these buffers, the caller can
14031 still use the original mechanism and pre-allocate the buffer(s).
14033 Implemented support for string operands within the DerefOf
14036 Restructured the Hardware and Event managers to be table driven,
14037 simplifying the source code and reducing the amount of generated
14040 Split the common read/write low-level ACPI register bitfield
14041 procedure into a separate read and write, simplifying the code
14044 Obsoleted the AcpiOsCallocate OSL interface. This interface was
14045 used only a handful of times and didn't have enough critical mass
14046 for a separate interface. Replaced with a common calloc procedure
14049 Fixed a reported problem with the GPE number mapping mechanism
14050 that allows GPE1 numbers to be non-contiguous with GPE0.
14051 Reorganized the GPE information and shrunk a large array that was
14052 originally large enough to hold info for all possible GPEs (256)
14053 to simply large enough to hold all GPEs up to the largest GPE
14054 number on the machine.
14056 Fixed a reported problem with resource structure alignment on 64-
14059 Changed the AcpiEnableEvent and AcpiDisableEvent external
14060 interfaces to not require any flags for the common case of
14061 enabling/disabling a GPE.
14063 Implemented support to allow a "Notify" on a Processor object.
14065 Most TBDs in comments within the source code have been resolved
14069 Fixed a problem in the interpreter where a standalone parent
14070 prefix (^) was not handled correctly in the interpreter and
14073 Removed obsolete and unnecessary GPE save/restore code.
14075 Implemented Field support in the ASL Load operator. This allows a
14076 table to be loaded from a named field, in addition to loading a
14077 table directly from an Operation Region.
14079 Implemented timeout and handle support in the external Global Lock
14082 Fixed a problem in the AcpiDump utility where pathnames were no
14083 longer being generated correctly during the dump of named objects.
14085 Modified the AML debugger to give a full display of if/while
14086 predicates instead of just one AML opcode at a time. (The
14087 predicate can have several nested ASL statements.) The old method
14088 was confusing during single stepping.
14090 Code and Data Size: Current core subsystem library sizes are shown
14091 below. These are the code and data sizes for the acpica.lib
14092 produced by the Microsoft Visual C++ 6.0 compiler, and these
14093 values do not include any ACPI driver or OSPM code. The debug
14094 version of the code includes the debug output trace mechanism and
14095 has a larger code and data size. Note that these values will vary
14096 depending on the efficiency of the compiler and the compiler
14097 options used during generation.
14099 Previous Release (12_18_01)
14100 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
14101 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
14103 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
14104 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
14108 Implemented fix for PIIX reverse throttling errata (Processor
14111 Added new Limit interface (Processor and Thermal drivers)
14113 New thermal policy (Thermal driver)
14115 Many updates to /proc
14117 Battery "low" event support (Battery driver)
14119 Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers)
14121 IA32 - IA64 initialization unification, no longer experimental
14123 Menuconfig options redesigned
14125 3) ASL Compiler, version X2037:
14127 Implemented several new output features to simplify integration of
14128 AML code into firmware: 1) Output the AML in C source code with
14129 labels for each named ASL object. The original ASL source code
14130 is interleaved as C comments. 2) Output the AML in ASM source code
14131 with labels and interleaved ASL source. 3) Output the AML in
14132 raw hex table form, in either C or ASM.
14134 Implemented support for optional string parameters to the
14135 LoadTable operator.
14137 Completed support for embedded escape sequences within string
14138 literals. The compiler now supports all single character escapes
14139 as well as the Octal and Hex escapes. Note: the insertion of a
14140 null byte into a string literal (via the hex/octal escape) causes
14141 the string to be immediately terminated. A warning is issued.
14143 Fixed a problem where incorrect AML was generated for the case
14144 where an ASL namepath consists of a single parent prefix (
14146 ) with no trailing name segments.
14148 The compiler has been successfully generated with a 64-bit C
14154 ----------------------------------------
14155 Summary of changes for this label: 12_18_01
14159 Enhanced blacklist with reason and severity fields. Any table's
14160 signature may now be used to identify a blacklisted system.
14162 Call _PIC control method to inform the firmware which interrupt
14163 model the OS is using. Turn on any disabled link devices.
14165 Cleaned up busmgr /proc error handling (Andreas Dilger)
14167 2) ACPI CA Core Subsystem:
14169 Implemented ACPI 2.0 semantics for the "Break" operator (Exit from
14172 Completed implementation of the ACPI 2.0 "Continue",
14173 "ConcatenateResTemplate", "DataTableRegion", and "LoadTable"
14174 operators. All new ACPI 2.0 operators are now implemented in both
14175 the ASL compiler and the AML interpreter. The only remaining ACPI
14176 2.0 task is support for the String data type in the DerefOf
14177 operator. Fixed a problem with AcquireMutex where the status code
14178 was lost if the caller had to actually wait for the mutex.
14180 Increased the maximum ASL Field size from 64K bits to 4G bits.
14182 Completed implementation of the external Global Lock interfaces --
14183 AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and
14184 Handler parameters were added.
14186 Completed another pass at removing warnings and issues when
14187 compiling with 64-bit compilers. The code now compiles cleanly
14188 with the Intel 64-bit C/C++ compiler. Most notably, the pointer
14189 add and subtract (diff) macros have changed considerably.
14192 Created and deployed a new ACPI_SIZE type that is 64-bits wide on
14193 64-bit platforms, 32-bits on all others. This type is used
14194 wherever memory allocation and/or the C sizeof() operator is used,
14195 and affects the OSL memory allocation interfaces AcpiOsAllocate
14196 and AcpiOsCallocate.
14198 Implemented sticky user breakpoints in the AML debugger.
14200 Code and Data Size: Current core subsystem library sizes are shown
14201 below. These are the code and data sizes for the acpica.lib
14202 produced by the Microsoft Visual C++ 6.0 compiler, and these
14203 values do not include any ACPI driver or OSPM code. The debug
14204 version of the code includes the debug output trace mechanism and
14205 has a larger code and data size. Note that these values will vary
14206 depending on the efficiency of the compiler and the compiler
14207 options used during generation.
14209 Previous Release (12_05_01)
14210 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
14211 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
14213 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
14214 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
14216 3) ASL Compiler, version X2034:
14218 Now checks for (and generates an error if detected) the use of a
14219 Break or Continue statement without an enclosing While statement.
14222 Successfully generated the compiler with the Intel 64-bit C
14225 ----------------------------------------
14226 Summary of changes for this label: 12_05_01
14228 1) ACPI CA Core Subsystem:
14230 The ACPI 2.0 CopyObject operator is fully implemented. This
14231 operator creates a new copy of an object (and is also used to
14232 bypass the "implicit conversion" mechanism of the Store operator.)
14234 The ACPI 2.0 semantics for the SizeOf operator are fully
14235 implemented. The change is that performing a SizeOf on a
14236 reference object causes an automatic dereference of the object to
14237 tha actual value before the size is evaluated. This behavior was
14238 undefined in ACPI 1.0.
14240 The ACPI 2.0 semantics for the Extended IRQ resource descriptor
14241 have been implemented. The interrupt polarity and mode are now
14244 Fixed a problem where ASL Constants (Zero, One, Ones, Revision)
14245 appearing in Package objects were not properly converted to
14246 integers when the internal Package was converted to an external
14247 object (via the AcpiEvaluateObject interface.)
14249 Fixed a problem with the namespace object deletion mechanism for
14250 objects created by control methods. There were two parts to this
14251 problem: 1) Objects created during the initialization phase method
14252 parse were not being deleted, and 2) The object owner ID mechanism
14253 to track objects was broken.
14255 Fixed a problem where the use of the ASL Scope operator within a
14256 control method would result in an invalid opcode exception.
14258 Fixed a problem introduced in the previous label where the buffer
14259 length required for the _PRT structure was not being returned
14262 Code and Data Size: Current core subsystem library sizes are shown
14263 below. These are the code and data sizes for the acpica.lib
14264 produced by the Microsoft Visual C++ 6.0 compiler, and these
14265 values do not include any ACPI driver or OSPM code. The debug
14266 version of the code includes the debug output trace mechanism and
14267 has a larger code and data size. Note that these values will vary
14268 depending on the efficiency of the compiler and the compiler
14269 options used during generation.
14271 Previous Release (11_20_01)
14272 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
14273 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
14276 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
14277 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
14281 Updated all files to apply cleanly against 2.4.16.
14283 Added basic PCI Interrupt Routing Table (PRT) support for IA32
14284 (acpi_pci.c), and unified the PRT code for IA32 and IA64. This
14285 version supports both static and dyanmic PRT entries, but dynamic
14286 entries are treated as if they were static (not yet
14287 reconfigurable). Architecture- specific code to use this data is
14288 absent on IA32 but should be available shortly.
14290 Changed the initialization sequence to start the ACPI interpreter
14291 (acpi_init) prior to initialization of the PCI driver (pci_init)
14292 in init/main.c. This ordering is required to support PRT and
14293 facilitate other (future) enhancement. A side effect is that the
14294 ACPI bus driver and certain device drivers can no longer be loaded
14297 Modified the 'make menuconfig' options to allow PCI Interrupt
14298 Routing support to be included without the ACPI Bus and other
14301 3) ASL Compiler, version X2033:
14303 Fixed some issues with the use of the new CopyObject and
14304 DataTableRegion operators. Both are fully functional.
14306 ----------------------------------------
14307 Summary of changes for this label: 11_20_01
14309 20 November 2001. Summary of changes for this release.
14311 1) ACPI CA Core Subsystem:
14313 Updated Index support to match ACPI 2.0 semantics. Storing a
14314 Integer, String, or Buffer to an Index of a Buffer will store only
14315 the least-significant byte of the source to the Indexed buffer
14316 byte. Multiple writes are not performed.
14318 Fixed a problem where the access type used in an AccessAs ASL
14319 operator was not recorded correctly into the field object.
14321 Fixed a problem where ASL Event objects were created in a
14322 signalled state. Events are now created in an unsignalled state.
14324 The internal object cache is now purged after table loading and
14325 initialization to reduce the use of dynamic kernel memory -- on
14326 the assumption that object use is greatest during the parse phase
14327 of the entire table (versus the run-time use of individual control
14330 ACPI 2.0 variable-length packages are now fully operational.
14332 Code and Data Size: Code and Data optimizations have permitted new
14333 feature development with an actual reduction in the library size.
14334 Current core subsystem library sizes are shown below. These are
14335 the code and data sizes for the acpica.lib produced by the
14336 Microsoft Visual C++ 6.0 compiler, and these values do not include
14337 any ACPI driver or OSPM code. The debug version of the code
14338 includes the debug output trace mechanism and has a larger code
14339 and data size. Note that these values will vary depending on the
14340 efficiency of the compiler and the compiler options used during
14343 Previous Release (11_09_01):
14344 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
14345 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
14348 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
14349 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
14353 Enhanced the ACPI boot-time initialization code to allow the use
14354 of Local APIC tables for processor enumeration on IA-32, and to
14355 pave the way for a fully MPS-free boot (on SMP systems) in the
14356 near future. This functionality replaces
14357 arch/i386/kernel/acpitables.c, which was introduced in an earlier
14358 2.4.15-preX release. To enable this feature you must add
14359 "acpi_boot=on" to the kernel command line -- see the help entry
14360 for CONFIG_ACPI_BOOT for more information. An IA-64 release is in
14363 Restructured the configuration options to allow boot-time table
14364 parsing support without inclusion of the ACPI Interpreter (and
14367 NOTE: This release does not include fixes for the reported events,
14368 power-down, and thermal passive cooling issues (coming soon).
14372 Added additional typechecking for Fields within restricted access
14373 Operation Regions. All fields within EC and CMOS regions must be
14374 declared with ByteAcc. All fields withing SMBus regions must be
14375 declared with the BufferAcc access type.
14377 Fixed a problem where the listing file output of control methods
14378 no longer interleaved the actual AML code with the ASL source
14384 ----------------------------------------
14385 Summary of changes for this label: 11_09_01
14387 1) ACPI CA Core Subsystem:
14389 Implemented ACPI 2.0-defined support for writes to fields with a
14390 Buffer, String, or Integer source operand that is smaller than the
14391 target field. In these cases, the source operand is zero-extended
14392 to fill the target field.
14394 Fixed a problem where a Field starting bit offset (within the
14395 parent operation region) was calculated incorrectly if the
14397 alignment of the field differed from the access width. This
14398 affected CreateWordField, CreateDwordField, CreateQwordField, and
14399 possibly other fields that use the "AccessAny" keyword.
14401 Fixed a problem introduced in the 11_02_01 release where indirect
14402 stores through method arguments did not operate correctly.
14406 Implemented boot-time ACPI table parsing support
14407 (CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code
14408 facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than
14409 legacy BIOS interfaces (e.g. MPS) for the configuration of system
14410 processors, memory, and interrupts during setup_arch(). Note that
14411 this patch does not include the required architecture-specific
14412 changes required to apply this information -- subsequent patches
14413 will be posted for both IA32 and IA64 to achieve this.
14415 Added low-level sleep support for IA32 platforms, courtesy of Pat
14416 Mochel. This allows IA32 systems to transition to/from various
14417 sleeping states (e.g. S1, S3), although the lack of a centralized
14418 driver model and power-manageable drivers will prevent its
14419 (successful) use on most systems.
14421 Revamped the ACPI 'menuconfig' layout: created new "ACPI Support"
14422 submenu, unified IA32 and IA64 options, added new "Boot using ACPI
14423 tables" option, etc.
14425 Increased the default timeout for the EC driver from 1ms to 10ms
14426 (1000 cycles of 10us) to try to address AE_TIME errors during EC
14429 ----------------------------------------
14430 Summary of changes for this label: 11_02_01
14432 1) ACPI CA Core Subsystem:
14434 ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access
14435 (QWordAcc keyword). All ACPI 2.0 64-bit support is now
14438 OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required
14439 changes to support ACPI 2.0 Qword field access. Read/Write
14440 PciConfiguration(), Read/Write Memory(), and Read/Write Port() now
14441 accept an ACPI_INTEGER (64 bits) as the value parameter. Also,
14442 the value parameter for the address space handler interface is now
14443 an ACPI_INTEGER. OSL implementations of these interfaces must now
14444 handle the case where the Width parameter is 64.
14446 Index Fields: Fixed a problem where unaligned bit assembly and
14447 disassembly for IndexFields was not supported correctly.
14449 Index and Bank Fields: Nested Index and Bank Fields are now
14450 supported. During field access, a check is performed to ensure
14451 that the value written to an Index or Bank register is not out of
14452 the range of the register. The Index (or Bank) register is
14453 written before each access to the field data. Future support will
14454 include allowing individual IndexFields to be wider than the
14455 DataRegister width.
14457 Fields: Fixed a problem where the AML interpreter was incorrectly
14458 attempting to write beyond the end of a Field/OpRegion. This was
14459 a boundary case that occurred when a DWORD field was written to a
14460 BYTE access OpRegion, forcing multiple writes and causing the
14461 interpreter to write one datum too many.
14463 Fields: Fixed a problem with Field/OpRegion access where the
14464 starting bit address of a field was incorrectly calculated if the
14465 current access type was wider than a byte (WordAcc, DwordAcc, or
14468 Fields: Fixed a problem where forward references to individual
14469 FieldUnits (individual Field names within a Field definition) were
14470 not resolved during the AML table load.
14472 Fields: Fixed a problem where forward references from a Field
14473 definition to the parent Operation Region definition were not
14474 resolved during the AML table load.
14476 Fields: Duplicate FieldUnit names within a scope are now detected
14477 during AML table load.
14479 Acpi Interfaces: Fixed a problem where the AcpiGetName() interface
14480 returned an incorrect name for the root node.
14482 Code and Data Size: Code and Data optimizations have permitted new
14483 feature development with an actual reduction in the library size.
14484 Current core subsystem library sizes are shown below. These are
14485 the code and data sizes for the acpica.lib produced by the
14486 Microsoft Visual C++ 6.0 compiler, and these values do not include
14487 any ACPI driver or OSPM code. The debug version of the code
14488 includes the debug output trace mechanism and has a larger code
14489 and data size. Note that these values will vary depending on the
14490 efficiency of the compiler and the compiler options used during
14493 Previous Release (10_18_01):
14494 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
14495 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
14498 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
14499 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
14503 Improved /proc processor output (Pavel Machek) Re-added
14504 MODULE_LICENSE("GPL") to all modules.
14506 3) ASL Compiler version X2030:
14508 Duplicate FieldUnit names within a scope are now detected and
14513 Programmer Reference updated to reflect OSL and address space
14514 handler interface changes described above.
14516 ----------------------------------------
14517 Summary of changes for this label: 10_18_01
14519 ACPI CA Core Subsystem:
14521 Fixed a problem with the internal object reference count mechanism
14522 that occasionally caused premature object deletion. This resolves
14523 all of the outstanding problem reports where an object is deleted
14524 in the middle of an interpreter evaluation. Although this problem
14525 only showed up in rather obscure cases, the solution to the
14526 problem involved an adjustment of all reference counts involving
14527 objects attached to namespace nodes.
14529 Fixed a problem with Field support in the interpreter where
14530 writing to an aligned field whose length is an exact multiple (2
14531 or greater) of the field access granularity would cause an attempt
14532 to write beyond the end of the field.
14534 The top level AML opcode execution functions within the
14535 interpreter have been renamed with a more meaningful and
14536 consistent naming convention. The modules exmonad.c and
14537 exdyadic.c were eliminated. New modules are exoparg1.c,
14538 exoparg2.c, exoparg3.c, and exoparg6.c.
14540 Support for the ACPI 2.0 "Mid" ASL operator has been implemented.
14542 Fixed a problem where the AML debugger was causing some internal
14543 objects to not be deleted during subsystem termination.
14545 Fixed a problem with the external AcpiEvaluateObject interface
14546 where the subsystem would fault if the named object to be
14547 evaluated refered to a constant such as Zero, Ones, etc.
14549 Fixed a problem with IndexFields and BankFields where the
14550 subsystem would fault if the index, data, or bank registers were
14551 not defined in the same scope as the field itself.
14553 Added printf format string checking for compilers that support
14554 this feature. Corrected more than 50 instances of issues with
14555 format specifiers within invocations of ACPI_DEBUG_PRINT
14556 throughout the core subsystem code.
14558 The ASL "Revision" operator now returns the ACPI support level
14559 implemented in the core - the value "2" since the ACPI 2.0 support
14560 is more than 50% implemented.
14562 Enhanced the output of the AML debugger "dump namespace" command
14563 to output in a more human-readable form.
14565 Current core subsystem library code sizes are shown below. These
14567 are the code and data sizes for the acpica.lib produced by the
14568 Microsoft Visual C++ 6.0 compiler, and these values do not include
14569 any ACPI driver or OSPM code. The debug version of the code
14570 includes the full debug trace mechanism -- leading to a much
14572 larger code and data size. Note that these values will vary
14573 depending on the efficiency of the compiler and the compiler
14574 options used during generation.
14576 Previous Label (09_20_01):
14577 Non-Debug Version: 65K Code, 5K Data, 70K Total
14578 Debug Version: 138K Code, 58K Data, 196K Total
14582 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
14583 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
14587 Implemented a "Bad BIOS Blacklist" to track machines that have
14588 known ASL/AML problems.
14590 Enhanced the /proc interface for the thermal zone driver and added
14591 support for _HOT (the critical suspend trip point). The 'info'
14592 file now includes threshold/policy information, and allows setting
14593 of _SCP (cooling preference) and _TZP (polling frequency) values
14594 to the 'info' file. Examples: "echo tzp=5 > info" sets the polling
14595 frequency to 5 seconds, and "echo scp=1 > info" sets the cooling
14596 preference to the passive/quiet mode (if supported by the ASL).
14598 Implemented a workaround for a gcc bug that resuted in an OOPs
14599 when loading the control method battery driver.
14601 ----------------------------------------
14602 Summary of changes for this label: 09_20_01
14604 ACPI CA Core Subsystem:
14606 The AcpiEnableEvent and AcpiDisableEvent interfaces have been
14607 modified to allow individual GPE levels to be flagged as wake-
14608 enabled (i.e., these GPEs are to remain enabled when the platform
14611 The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now
14612 support wake-enabled GPEs. This means that upon entering the
14613 sleep state, all GPEs that are not wake-enabled are disabled.
14614 When leaving the sleep state, these GPEs are reenabled.
14616 A local double-precision divide/modulo module has been added to
14617 enhance portability to OS kernels where a 64-bit math library is
14618 not available. The new module is "utmath.c".
14620 Several optimizations have been made to reduce the use of CPU
14621 stack. Originally over 2K, the maximum stack usage is now below
14622 2K at 1860 bytes (1.82k)
14624 Fixed a problem with the AcpiGetFirmwareTable interface where the
14625 root table pointer was not mapped into a logical address properly.
14627 Fixed a problem where a NULL pointer was being dereferenced in the
14628 interpreter code for the ASL Notify operator.
14630 Fixed a problem where the use of the ASL Revision operator
14631 returned an error. This operator now returns the current version
14632 of the ACPI CA core subsystem.
14634 Fixed a problem where objects passed as control method parameters
14635 to AcpiEvaluateObject were always deleted at method termination.
14636 However, these objects may end up being stored into the namespace
14637 by the called method. The object reference count mechanism was
14638 applied to these objects instead of a force delete.
14640 Fixed a problem where static strings or buffers (contained in the
14641 AML code) that are declared as package elements within the ASL
14642 code could cause a fault because the interpreter would attempt to
14643 delete them. These objects are now marked with the "static
14644 object" flag to prevent any attempt to delete them.
14646 Implemented an interpreter optimization to use operands directly
14647 from the state object instead of extracting the operands to local
14648 variables. This reduces stack use and code size, and improves
14651 The module exxface.c was eliminated as it was an unnecessary extra
14654 Current core subsystem library code sizes are shown below. These
14655 are the code and data sizes for the acpica.lib produced by the
14656 Microsoft Visual C++ 6.0 compiler, and these values do not include
14657 any ACPI driver or OSPM code. The debug version of the code
14658 includes the full debug trace mechanism -- leading to a much
14659 larger code and data size. Note that these values will vary
14660 depending on the efficiency of the compiler and the compiler
14661 options used during generation.
14663 Non-Debug Version: 65K Code, 5K Data, 70K Total
14664 (Previously 69K) Debug Version: 138K Code, 58K Data, 196K
14665 Total (Previously 195K)
14669 Support for ACPI 2.0 64-bit integers has been added. All ACPI
14670 Integer objects are now 64 bits wide
14672 All Acpi data types and structures are now in lower case. Only
14673 Acpi macros are upper case for differentiation.
14677 Changes to the external interfaces as described above.
14679 ----------------------------------------
14680 Summary of changes for this label: 08_31_01
14682 ACPI CA Core Subsystem:
14684 A bug with interpreter implementation of the ASL Divide operator
14685 was found and fixed. The implicit function return value (not the
14686 explicit store operands) was returning the remainder instead of
14687 the quotient. This was a longstanding bug and it fixes several
14688 known outstanding issues on various platforms.
14690 The ACPI_DEBUG_PRINT and function trace entry/exit macros have
14691 been further optimized for size. There are 700 invocations of the
14692 DEBUG_PRINT macro alone, so each optimization reduces the size of
14693 the debug version of the subsystem significantly.
14695 A stack trace mechanism has been implemented. The maximum stack
14696 usage is about 2K on 32-bit platforms. The debugger command "stat
14697 stack" will display the current maximum stack usage.
14699 All public symbols and global variables within the subsystem are
14700 now prefixed with the string "Acpi". This keeps all of the
14701 symbols grouped together in a kernel map, and avoids conflicts
14702 with other kernel subsystems.
14704 Most of the internal fixed lookup tables have been moved into the
14705 code segment via the const operator.
14707 Several enhancements have been made to the interpreter to both
14708 reduce the code size and improve performance.
14710 Current core subsystem library code sizes are shown below. These
14711 are the code and data sizes for the acpica.lib produced by the
14712 Microsoft Visual C++ 6.0 compiler, and these values do not include
14713 any ACPI driver or OSPM code. The debug version of the code
14714 includes the full debug trace mechanism which contains over 700
14715 invocations of the DEBUG_PRINT macro, 500 function entry macro
14716 invocations, and over 900 function exit macro invocations --
14717 leading to a much larger code and data size. Note that these
14718 values will vary depending on the efficiency of the compiler and
14719 the compiler options used during generation.
14721 Non-Debug Version: 64K Code, 5K Data, 69K Total
14722 Debug Version: 137K Code, 58K Data, 195K Total
14726 Implemented wbinvd() macro, pending a kernel-wide definition.
14728 Fixed /proc/acpi/event to handle poll() and short reads.
14730 ASL Compiler, version X2026:
14732 Fixed a problem introduced in the previous label where the AML
14734 code emitted for package objects produced packages with zero
14737 ----------------------------------------
14738 Summary of changes for this label: 08_16_01
14740 ACPI CA Core Subsystem:
14742 The following ACPI 2.0 ASL operators have been implemented in the
14743 AML interpreter (These are already supported by the Intel ASL
14744 compiler): ToDecimalString, ToHexString, ToString, ToInteger, and
14745 ToBuffer. Support for 64-bit AML constants is implemented in the
14746 AML parser, debugger, and disassembler.
14748 The internal memory tracking mechanism (leak detection code) has
14749 been upgraded to reduce the memory overhead (a separate tracking
14750 block is no longer allocated for each memory allocation), and now
14751 supports all of the internal object caches.
14753 The data structures and code for the internal object caches have
14754 been coelesced and optimized so that there is a single cache and
14755 memory list data structure and a single group of functions that
14756 implement generic cache management. This has reduced the code
14757 size in both the debug and release versions of the subsystem.
14759 The DEBUG_PRINT macro(s) have been optimized for size and replaced
14760 by ACPI_DEBUG_PRINT. The syntax for this macro is slightly
14761 different, because it generates a single call to an internal
14762 function. This results in a savings of about 90 bytes per
14763 invocation, resulting in an overall code and data savings of about
14764 16% in the debug version of the subsystem.
14768 Fixed C3 disk corruption problems and re-enabled C3 on supporting
14771 Integrated low-level sleep code by Patrick Mochel.
14773 Further tweaked source code Linuxization.
14779 Support for ACPI 2.0 variable length packages is fixed/completed.
14781 Fixed a problem where the optional length parameter for the ACPI
14782 2.0 ToString operator.
14784 Fixed multiple extraneous error messages when a syntax error is
14785 detected within the declaration line of a control method.
14787 ----------------------------------------
14788 Summary of changes for this label: 07_17_01
14790 ACPI CA Core Subsystem:
14792 Added a new interface named AcpiGetFirmwareTable to obtain any
14793 ACPI table via the ACPI signature. The interface can be called at
14794 any time during kernel initialization, even before the kernel
14795 virtual memory manager is initialized and paging is enabled. This
14796 allows kernel subsystems to obtain ACPI tables very early, even
14797 before the ACPI CA subsystem is initialized.
14799 Fixed a problem where Fields defined with the AnyAcc attribute
14800 could be resolved to the incorrect address under the following
14801 conditions: 1) the field width is larger than 8 bits and 2) the
14802 parent operation region is not defined on a DWORD boundary.
14804 Fixed a problem where the interpreter is not being locked during
14805 namespace initialization (during execution of the _INI control
14806 methods), causing an error when an attempt is made to release it
14809 ACPI 2.0 support in the AML Interpreter has begun and will be
14810 ongoing throughout the rest of this year. In this label, The Mod
14811 operator is implemented.
14813 Added a new data type to contain full PCI addresses named
14814 ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device,
14815 and Function values.
14819 Enhanced the Linux version of the source code to change most
14820 capitalized ACPI type names to lowercase. For example, all
14821 instances of ACPI_STATUS are changed to acpi_status. This will
14822 result in a large diff, but the change is strictly cosmetic and
14823 aligns the CA code closer to the Linux coding standard.
14827 The interfaces to the PCI configuration space have been changed to
14828 add the PCI Segment number and to split the single 32-bit combined
14829 DeviceFunction field into two 16-bit fields. This was
14830 accomplished by moving the four values that define an address in
14831 PCI configuration space (segment, bus, device, and function) to
14832 the new ACPI_PCI_ID structure.
14834 The changes to the PCI configuration space interfaces led to a
14835 reexamination of the complete set of address space access
14836 interfaces for PCI, I/O, and Memory. The previously existing 18
14837 interfaces have proven difficult to maintain (any small change
14838 must be propagated across at least 6 interfaces) and do not easily
14839 allow for future expansion to 64 bits if necessary. Also, on some
14840 systems, it would not be appropriate to demultiplex the access
14841 width (8, 16, 32,or 64) before calling the OSL if the
14842 corresponding native OS interfaces contain a similar access width
14843 parameter. For these reasons, the 18 address space interfaces
14844 have been replaced by these 6 new ones:
14846 AcpiOsReadPciConfiguration
14847 AcpiOsWritePciConfiguration
14853 Added a new interface named AcpiOsGetRootPointer to allow the OSL
14854 to perform the platform and/or OS-specific actions necessary to
14855 obtain the ACPI RSDP table pointer. On IA-32 platforms, this
14856 interface will simply call down to the CA core to perform the low-
14857 memory search for the table. On IA-64, the RSDP is obtained from
14858 EFI. Migrating this interface to the OSL allows the CA core to
14860 remain OS and platform independent.
14862 Added a new interface named AcpiOsSignal to provide a generic
14863 "function code and pointer" interface for various miscellaneous
14864 signals and notifications that must be made to the host OS. The
14865 first such signals are intended to support the ASL Fatal and
14866 Breakpoint operators. In the latter case, the AcpiOsBreakpoint
14867 interface has been obsoleted.
14869 The definition of the AcpiFormatException interface has been
14870 changed to simplify its use. The caller no longer must supply a
14871 buffer to the call; A pointer to a const string is now returned
14872 directly. This allows the call to be easily used in printf
14873 statements, etc. since the caller does not have to manage a local
14877 ASL Compiler, Version X2025:
14879 The ACPI 2.0 Switch/Case/Default operators have been implemented
14880 and are fully functional. They will work with all ACPI 1.0
14881 interpreters, since the operators are simply translated to If/Else
14884 The ACPI 2.0 ElseIf operator is implemented and will also work
14885 with 1.0 interpreters, for the same reason.
14887 Implemented support for ACPI 2.0 variable-length packages. These
14888 packages have a separate opcode, and their size is determined by
14889 the interpreter at run-time.
14891 Documentation The ACPI CA Programmer Reference has been updated to
14892 reflect the new interfaces and changes to existing interfaces.
14894 ------------------------------------------
14895 Summary of changes for this label: 06_15_01
14897 ACPI CA Core Subsystem:
14899 Fixed a problem where a DWORD-accessed field within a Buffer
14900 object would get its byte address inadvertently rounded down to
14901 the nearest DWORD. Buffers are always Byte-accessible.
14903 ASL Compiler, version X2024:
14905 Fixed a problem where the Switch() operator would either fault or
14906 hang the compiler. Note however, that the AML code for this ACPI
14907 2.0 operator is not yet implemented.
14909 Compiler uses the new AcpiOsGetTimer interface to obtain compile
14912 Implementation of the CreateField operator automatically converts
14913 a reference to a named field within a resource descriptor from a
14914 byte offset to a bit offset if required.
14916 Added some missing named fields from the resource descriptor
14917 support. These are the names that are automatically created by the
14918 compiler to reference fields within a descriptor. They are only
14919 valid at compile time and are not passed through to the AML
14922 Resource descriptor named fields are now typed as Integers and
14923 subject to compile-time typechecking when used in expressions.
14925 ------------------------------------------
14926 Summary of changes for this label: 05_18_01
14928 ACPI CA Core Subsystem:
14930 Fixed a couple of problems in the Field support code where bits
14931 from adjacent fields could be returned along with the proper field
14932 bits. Restructured the field support code to improve performance,
14933 readability and maintainability.
14935 New DEBUG_PRINTP macro automatically inserts the procedure name
14936 into the output, saving hundreds of copies of procedure name
14937 strings within the source, shrinking the memory footprint of the
14938 debug version of the core subsystem.
14940 Source Code Structure:
14942 The source code directory tree was restructured to reflect the
14943 current organization of the component architecture. Some files
14944 and directories have been moved and/or renamed.
14948 Fixed leaking kacpidpc processes.
14950 Fixed queueing event data even when /proc/acpi/event is not
14953 ASL Compiler, version X2020:
14955 Memory allocation performance enhancement - over 24X compile time
14956 improvement on large ASL files. Parse nodes and namestring
14957 buffers are now allocated from a large internal compiler buffer.
14959 The temporary .SRC file is deleted unless the "-s" option is
14962 The "-d" debug output option now sends all output to the .DBG file
14963 instead of the console.
14965 "External" second parameter is now optional
14967 "ElseIf" syntax now properly allows the predicate
14969 Last operand to "Load" now recognized as a Target operand
14971 Debug object can now be used anywhere as a normal object.
14973 ResourceTemplate now returns an object of type BUFFER
14975 EISAID now returns an object of type INTEGER
14977 "Index" now works with a STRING operand
14979 "LoadTable" now accepts optional parameters
14981 "ToString" length parameter is now optional
14983 "Interrupt (ResourceType," parse error fixed.
14985 "Register" with a user-defined region space parse error fixed
14987 Escaped backslash at the end of a string ("\\") scan/parse error
14990 "Revision" is now an object of type INTEGER.
14994 ------------------------------------------
14995 Summary of changes for this label: 05_02_01
14999 /proc/acpi/event now blocks properly.
15001 Removed /proc/sys/acpi. You can still dump your DSDT from
15004 ACPI CA Core Subsystem:
15006 Fixed a problem introduced in the previous label where some of the
15007 "small" resource descriptor types were not recognized.
15009 Improved error messages for the case where an ASL Field is outside
15010 the range of the parent operation region.
15012 ASL Compiler, version X2018:
15015 Added error detection for ASL Fields that extend beyond the length
15016 of the parent operation region (only if the length of the region
15017 is known at compile time.) This includes fields that have a
15018 minimum access width that is smaller than the parent region, and
15019 individual field units that are partially or entirely beyond the
15020 extent of the parent.
15024 ------------------------------------------
15025 Summary of changes for this label: 04_27_01
15027 ACPI CA Core Subsystem:
15029 Fixed a problem where the namespace mutex could be released at the
15030 wrong time during execution of AcpiRemoveAddressSpaceHandler.
15032 Added optional thread ID output for debug traces, to simplify
15033 debugging of multiple threads. Added context switch notification
15034 when the debug code realizes that a different thread is now
15035 executing ACPI code.
15037 Some additional external data types have been prefixed with the
15038 string "ACPI_" for consistency. This may effect existing code.
15039 The data types affected are the external callback typedefs - e.g.,
15041 WALK_CALLBACK becomes ACPI_WALK_CALLBACK.
15045 Fixed an issue with the OSL semaphore implementation where a
15046 thread was waking up with an error from receiving a SIGCHLD
15049 Linux version of ACPI CA now uses the system C library for string
15050 manipulation routines instead of a local implementation.
15052 Cleaned up comments and removed TBDs.
15054 ASL Compiler, version X2017:
15056 Enhanced error detection and reporting for all file I/O
15061 Programmer Reference updated to version 1.06.
15065 ------------------------------------------
15066 Summary of changes for this label: 04_13_01
15068 ACPI CA Core Subsystem:
15070 Restructured support for BufferFields and RegionFields.
15071 BankFields support is now fully operational. All known 32-bit
15072 limitations on field sizes have been removed. Both BufferFields
15073 and (Operation) RegionFields are now supported by the same field
15076 Resource support now supports QWORD address and IO resources. The
15077 16/32/64 bit address structures and the Extended IRQ structure
15078 have been changed to properly handle Source Resource strings.
15080 A ThreadId of -1 is now used to indicate a "mutex not acquired"
15081 condition internally and must never be returned by AcpiOsThreadId.
15082 This reserved value was changed from 0 since Unix systems allow a
15087 Driver code reorganized to enhance portability
15089 Added a kernel configuration option to control ACPI_DEBUG
15091 Fixed the EC driver to honor _GLK.
15093 ASL Compiler, version X2016:
15095 Fixed support for the "FixedHw" keyword. Previously, the FixedHw
15096 address space was set to 0, not 0x7f as it should be.
15098 ------------------------------------------
15099 Summary of changes for this label: 03_13_01
15101 ACPI CA Core Subsystem:
15103 During ACPI initialization, the _SB_._INI method is now run if
15106 Notify handler fix - notifies are deferred until the parent method
15107 completes execution. This fixes the "mutex already acquired"
15108 issue seen occasionally.
15110 Part of the "implicit conversion" rules in ACPI 2.0 have been
15111 found to cause compatibility problems with existing ASL/AML. The
15112 convert "result-to-target-type" implementation has been removed
15113 for stores to method Args and Locals. Source operand conversion
15114 is still fully implemented. Possible changes to ACPI 2.0
15115 specification pending.
15117 Fix to AcpiRsCalculatePciRoutingTableLength to return correct
15120 Fix for compiler warnings for 64-bit compiles.
15124 /proc output aligned for easier parsing.
15126 Release-version compile problem fixed.
15128 New kernel configuration options documented in Configure.help.
15130 IBM 600E - Fixed Sleep button may generate "Invalid <NULL>
15135 Power resource driver integrated with bus manager.
15137 Fixed kernel fault during active cooling for thermal zones.
15141 The source code tree has been restructured.
15145 ------------------------------------------
15146 Summary of changes for this label: 03_02_01
15148 Linux OS Services Layer (OSL):
15150 Major revision of all Linux-specific code.
15152 Modularized all ACPI-specific drivers.
15154 Added new thermal zone and power resource drivers.
15156 Revamped /proc interface (new functionality is under /proc/acpi).
15158 New kernel configuration options.
15160 Linux known issues:
15162 New kernel configuration options not documented in Configure.help
15166 Module dependencies not currently implemented. If used, they
15167 should be loaded in this order: busmgr, power, ec, system,
15168 processor, battery, ac_adapter, button, thermal.
15170 Modules will not load if CONFIG_MODVERSION is set.
15172 IBM 600E - entering S5 may reboot instead of shutting down.
15174 IBM 600E - Sleep button may generate "Invalid <NULL> context"
15177 Some systems may fail with "execution mutex already acquired"
15180 ACPI CA Core Subsystem:
15182 Added a new OSL Interface, AcpiOsGetThreadId. This was required
15183 for the deadlock detection code. Defined to return a non-zero, 32-
15184 bit thread ID for the currently executing thread. May be a non-
15185 zero constant integer on single-thread systems.
15187 Implemented deadlock detection for internal subsystem mutexes. We
15188 may add conditional compilation for this code (debug only) later.
15190 ASL/AML Mutex object semantics are now fully supported. This
15191 includes multiple acquires/releases by owner and support for the
15193 Mutex SyncLevel parameter.
15195 A new "Force Release" mechanism automatically frees all ASL
15196 Mutexes that have been acquired but not released when a thread
15197 exits the interpreter. This forces conformance to the ACPI spec
15198 ("All mutexes must be released when an invocation exits") and
15199 prevents deadlocked ASL threads. This mechanism can be expanded
15200 (later) to monitor other resource acquisitions if OEM ASL code
15201 continues to misbehave (which it will).
15203 Several new ACPI exception codes have been added for the Mutex
15206 Recursive method calls are now allowed and supported (the ACPI
15207 spec does in fact allow recursive method calls.) The number of
15208 recursive calls is subject to the restrictions imposed by the
15209 SERIALIZED method keyword and SyncLevel (ACPI 2.0) method
15212 Implemented support for the SyncLevel parameter for control
15213 methods (ACPI 2.0 feature)
15215 Fixed a deadlock problem when multiple threads attempted to use
15218 Fixed a problem where the string length of a String package
15219 element was not always set in a package returned from
15220 AcpiEvaluateObject.
15222 Fixed a problem where the length of a String package element was
15223 not always included in the length of the overall package returned
15224 from AcpiEvaluateObject.
15226 Added external interfaces (Acpi*) to the ACPI debug memory
15227 manager. This manager keeps a list of all outstanding
15228 allocations, and can therefore detect memory leaks and attempts to
15229 free memory blocks more than once. Useful for code such as the
15230 power manager, etc. May not be appropriate for device drivers.
15231 Performance with the debug code enabled is slow.
15233 The ACPI Global Lock is now an optional hardware element.
15235 ASL Compiler Version X2015:
15237 Integrated changes to allow the compiler to be generated on
15238 multiple platforms.
15240 Linux makefile added to generate the compiler on Linux
15244 All platform-specific headers have been moved to their own
15245 subdirectory, Include/Platform.
15247 New source file added, Interpreter/ammutex.c
15249 New header file, Include/acstruct.h
15253 The programmer reference has been updated for the following new
15254 interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree
15256 ------------------------------------------
15257 Summary of changes for this label: 02_08_01
15259 Core ACPI CA Subsystem: Fixed a problem where an error was
15260 incorrectly returned if the return resource buffer was larger than
15261 the actual data (in the resource interfaces).
15263 References to named objects within packages are resolved to the
15265 full pathname string before packages are returned directly (via
15266 the AcpiEvaluateObject interface) or indirectly via the resource
15269 Linux OS Services Layer (OSL):
15271 Improved /proc battery interface.
15274 Added C-state debugging output and other miscellaneous fixes.
15276 ASL Compiler Version X2014:
15278 All defined method arguments can now be used as local variables,
15279 including the ones that are not actually passed in as parameters.
15280 The compiler tracks initialization of the arguments and issues an
15281 exception if they are used without prior assignment (just like
15284 The -o option now specifies a filename prefix that is used for all
15285 output files, including the AML output file. Otherwise, the
15286 default behavior is as follows: 1) the AML goes to the file
15287 specified in the DSDT. 2) all other output files use the input
15288 source filename as the base.
15290 ------------------------------------------
15291 Summary of changes for this label: 01_25_01
15293 Core ACPI CA Subsystem: Restructured the implementation of object
15294 store support within the interpreter. This includes support for
15295 the Store operator as well as any ASL operators that include a
15298 Partially implemented support for Implicit Result-to-Target
15299 conversion. This is when a result object is converted on the fly
15300 to the type of an existing target object. Completion of this
15301 support is pending further analysis of the ACPI specification
15302 concerning this matter.
15304 CPU-specific code has been removed from the subsystem (hardware
15307 New Power Management Timer functions added
15309 Linux OS Services Layer (OSL): Moved system state transition code
15310 to the core, fixed it, and modified Linux OSL accordingly.
15312 Fixed C2 and C3 latency calculations.
15315 We no longer use the compilation date for the version message on
15316 initialization, but retrieve the version from AcpiGetSystemInfo().
15318 Incorporated for fix Sony VAIO machines.
15320 Documentation: The Programmer Reference has been updated and
15324 ASL Compiler: Version X2013: Fixed a problem where the line
15325 numbering and error reporting could get out of sync in the
15326 presence of multiple include files.
15328 ------------------------------------------
15329 Summary of changes for this label: 01_15_01
15331 Core ACPI CA Subsystem:
15333 Implemented support for type conversions in the execution of the
15334 ASL Concatenate operator (The second operand is converted to
15335 match the type of the first operand before concatenation.)
15337 Support for implicit source operand conversion is partially
15338 implemented. The ASL source operand types Integer, Buffer, and
15339 String are freely interchangeable for most ASL operators and are
15340 converted by the interpreter on the fly as required. Implicit
15341 Target operand conversion (where the result is converted to the
15342 target type before storing) is not yet implemented.
15344 Support for 32-bit and 64-bit BCD integers is implemented.
15346 Problem fixed where a field read on an aligned field could cause a
15347 read past the end of the field.
15349 New exception, AE_AML_NO_RETURN_VALUE, is returned when a method
15350 does not return a value, but the caller expects one. (The ASL
15351 compiler flags this as a warning.)
15356 1. Static typechecking of all operands is implemented. This
15357 prevents the use of invalid objects (such as using a Package where
15358 an Integer is required) at compile time instead of at interpreter
15360 2. The ASL source line is printed with ALL errors and warnings.
15361 3. Bug fix for source EOF without final linefeed.
15362 4. Debug option is split into a parse trace and a namespace trace.
15363 5. Namespace output option (-n) includes initial values for
15364 integers and strings.
15365 6. Parse-only option added for quick syntax checking.
15366 7. Compiler checks for duplicate ACPI name declarations
15369 1. Relaxed typechecking to allow interchangeability between
15370 strings, integers, and buffers. These types are now converted by
15371 the interpreter at runtime.
15372 2. Compiler reports time taken by each internal subsystem in the
15376 ------------------------------------------
15377 Summary of changes for this label: 12_14_00
15381 This is the first official release of the compiler. Since the
15382 compiler requires elements of the Core Subsystem, this label
15383 synchronizes everything.
15385 ------------------------------------------
15386 Summary of changes for this label: 12_08_00
15389 Fixed a problem where named references within the ASL definition
15390 of both OperationRegions and CreateXXXFields did not work
15391 properly. The symptom was an AE_AML_OPERAND_TYPE during
15392 initialization of the region/field. This is similar (but not
15393 related internally) to the problem that was fixed in the last
15396 Implemented both 32-bit and 64-bit support for the BCD ASL
15397 functions ToBCD and FromBCD.
15399 Updated all legal headers to include "2000" in the copyright
15402 ------------------------------------------
15403 Summary of changes for this label: 12_01_00
15405 Fixed a problem where method invocations within the ASL definition
15406 of both OperationRegions and CreateXXXFields did not work
15407 properly. The symptom was an AE_AML_OPERAND_TYPE during
15408 initialization of the region/field:
15410 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments
15411 [DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s)
15414 Fixed a problem where operators with more than one nested
15415 subexpression would fail. The symptoms were varied, by mostly
15416 AE_AML_OPERAND_TYPE errors. This was actually a rather serious
15417 problem that has gone unnoticed until now.
15419 Subtract (Add (1,2), Multiply (3,4))
15421 Fixed a problem where AcpiGetHandle didn't quite get fixed in the
15422 previous build (The prefix part of a relative path was handled
15425 Fixed a problem where Operation Region initialization failed if
15426 the operation region name was a "namepath" instead of a simple
15427 "nameseg". Symptom was an AE_NO_OPERAND error.
15429 Fixed a problem where an assignment to a local variable via the
15430 indirect RefOf mechanism only worked for the first such
15431 assignment. Subsequent assignments were ignored.
15433 ------------------------------------------
15434 Summary of changes for this label: 11_15_00
15436 ACPI 2.0 table support with backwards support for ACPI 1.0 and the
15437 0.71 extensions. Note: although we can read ACPI 2.0 BIOS tables,
15438 the AML interpreter does NOT have support for the new 2.0 ASL
15439 grammar terms at this time.
15441 All ACPI hardware access is via the GAS structures in the ACPI 2.0
15444 All physical memory addresses across all platforms are now 64 bits
15445 wide. Logical address width remains dependent on the platform
15448 AcpiOsMapMemory interface changed to a 64-bit physical address.
15450 The AML interpreter integer size is now 64 bits, as per the ACPI
15453 For backwards compatibility with ACPI 1.0, ACPI tables with a
15454 revision number less than 2 use 32-bit integers only.
15456 Fixed a problem where the evaluation of OpRegion operands did not
15457 always resolve them to numbers properly.
15459 ------------------------------------------
15460 Summary of changes for this label: 10_20_00
15462 Fix for CBN_._STA issue. This fix will allow correct access to
15463 CBN_ OpRegions when the _STA returns 0x8.
15465 Support to convert ACPI constants (Ones, Zeros, One) to actual
15466 values before a package object is returned
15468 Fix for method call as predicate to if/while construct causing
15469 incorrect if/while behavior
15471 Fix for Else block package lengths sometimes calculated wrong (if
15474 Fix for Processor object length field, was always zero
15476 Table load abort if FACP sanity check fails
15478 Fix for problem with Scope(name) if name already exists
15480 Warning emitted if a named object referenced cannot be found
15481 (resolved) during method execution.
15487 ------------------------------------------
15488 Summary of changes for this label: 9_29_00
15490 New table initialization interfaces: AcpiInitializeSubsystem no
15491 longer has any parameters AcpiFindRootPointer - Find the RSDP (if
15492 necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP-
15493 >RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by
15496 Note: These interface changes require changes to all existing OSDs
15498 The PCI_Config default address space handler is always installed
15499 at the root namespace object.
15501 -------------------------------------------
15502 Summary of changes for this label: 09_15_00
15504 The new initialization architecture is implemented. New
15505 interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize)
15506 AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace
15508 (Namespace is automatically loaded when a table is loaded)
15510 The ACPI_OPERAND_OBJECT has been optimized to shrink its size from
15511 52 bytes to 32 bytes. There is usually one of these for every
15512 namespace object, so the memory savings is significant.
15514 Implemented just-in-time evaluation of the CreateField operators.
15516 Bug fixes for IA-64 support have been integrated.
15518 Additional code review comments have been implemented
15520 The so-called "third pass parse" has been replaced by a final walk
15521 through the namespace to initialize all operation regions (address
15522 spaces) and fields that have not yet been initialized during the
15523 execution of the various _INI and REG methods.
15525 New file - namespace/nsinit.c
15527 -------------------------------------------
15528 Summary of changes for this label: 09_01_00
15530 Namespace manager data structures have been reworked to change the
15531 primary object from a table to a single object. This has
15532 resulted in dynamic memory savings of 3X within the namespace and
15533 2X overall in the ACPI CA subsystem.
15535 Fixed problem where the call to AcpiEvFindPciRootBuses was
15536 inadvertently left commented out.
15538 Reduced the warning count when generating the source with the GCC
15541 Revision numbers added to each module header showing the
15542 SourceSafe version of the file. Please refer to this version
15543 number when giving us feedback or comments on individual modules.
15545 The main object types within the subsystem have been renamed to
15546 clarify their purpose:
15548 ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT
15549 ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT
15550 ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE
15552 NOTE: no changes to the initialization sequence are included in
15555 -------------------------------------------
15556 Summary of changes for this label: 08_23_00
15558 Fixed problem where TerminateControlMethod was being called
15559 multiple times per method
15561 Fixed debugger problem where single stepping caused a semaphore to
15564 Improved performance through additional parse object caching -
15565 added ACPI_EXTENDED_OP type
15567 -------------------------------------------
15568 Summary of changes for this label: 08_10_00
15570 Parser/Interpreter integration: Eliminated the creation of
15571 complete parse trees for ACPI tables and control methods.
15572 Instead, parse subtrees are created and then deleted as soon as
15573 they are processed (Either entered into the namespace or executed
15574 by the interpreter). This reduces the use of dynamic kernel
15575 memory significantly. (about 10X)
15577 Exception codes broken into classes and renumbered. Be sure to
15578 recompile all code that includes acexcep.h. Hopefully we won't
15579 have to renumber the codes again now that they are split into
15580 classes (environment, programmer, AML code, ACPI table, and
15583 Fixed some additional alignment issues in the Resource Manager
15586 Implemented semaphore tracking in the AcpiExec utility, and fixed
15587 several places where mutexes/semaphores were being unlocked
15588 without a corresponding lock operation. There are no known
15589 semaphore or mutex "leaks" at this time.
15591 Fixed the case where an ASL Return operator is used to return an
15594 -------------------------------------------
15595 Summary of changes for this label: 07_28_00
15597 Fixed a problem with the way addresses were calculated in
15598 AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem
15599 manifested itself when a Field was created with WordAccess or
15600 DwordAccess, but the field unit defined within the Field was less
15602 than a Word or Dword.
15604 Fixed a problem in AmlDumpOperands() module's loop to pull
15605 operands off of the operand stack to display information. The
15606 problem manifested itself as a TLB error on 64-bit systems when
15607 accessing an operand stack with two or more operands.
15609 Fixed a problem with the PCI configuration space handlers where
15610 context was getting confused between accesses. This required a
15611 change to the generic address space handler and address space
15612 setup definitions. Handlers now get both a global handler context
15613 (this is the one passed in by the user when executing
15614 AcpiInstallAddressSpaceHandler() and a specific region context
15615 that is unique to each region (For example, the _ADR, _SEG and
15616 _BBN values associated with a specific region). The generic
15617 function definitions have changed to the following:
15619 typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function,
15620 UINT32 Address, UINT32 BitWidth, UINT32 *Value, void
15621 *HandlerContext, // This used to be void *Context void
15622 *RegionContext); // This is an additional parameter
15624 typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE
15625 RegionHandle, UINT32 Function, void *HandlerContext, void
15626 **RegionContext); // This used to be **ReturnContext
15628 -------------------------------------------
15629 Summary of changes for this label: 07_21_00
15631 Major file consolidation and rename. All files within the
15632 interpreter have been renamed as well as most header files. This
15633 was done to prevent collisions with existing files in the host
15634 OSs -- filenames such as "config.h" and "global.h" seem to be
15635 quite common. The VC project files have been updated. All
15636 makefiles will require modification.
15638 The parser/interpreter integration continues in Phase 5 with the
15639 implementation of a complete 2-pass parse (the AML is parsed
15640 twice) for each table; This avoids the construction of a huge
15641 parse tree and therefore reduces the amount of dynamic memory
15642 required by the subsystem. Greater use of the parse object cache
15643 means that performance is unaffected.
15645 Many comments from the two code reviews have been rolled in.
15647 The 64-bit alignment support is complete.
15649 -------------------------------------------
15650 Summary of changes for this label: 06_30_00
15652 With a nod and a tip of the hat to the technology of yesteryear,
15653 we've added support in the source code for 80 column output
15654 devices. The code is now mostly constrained to 80 columns or
15655 less to support environments and editors that 1) cannot display
15656 or print more than 80 characters on a single line, and 2) cannot
15657 disable line wrapping.
15659 A major restructuring of the namespace data structure has been
15660 completed. The result is 1) cleaner and more
15661 understandable/maintainable code, and 2) a significant reduction
15662 in the dynamic memory requirement for each named ACPI object
15665 -------------------------------------------
15666 Summary of changes for this label: 06_23_00
15668 Linux support has been added. In order to obtain approval to get
15669 the ACPI CA subsystem into the Linux kernel, we've had to make
15670 quite a few changes to the base subsystem that will affect all
15671 users (all the changes are generic and OS- independent). The
15672 effects of these global changes have been somewhat far reaching.
15673 Files have been merged and/or renamed and interfaces have been
15674 renamed. The major changes are described below.
15676 Osd* interfaces renamed to AcpiOs* to eliminate namespace
15677 pollution/confusion within our target kernels. All OSD
15678 interfaces must be modified to match the new naming convention.
15680 Files merged across the subsystem. A number of the smaller source
15681 and header files have been merged to reduce the file count and
15682 increase the density of the existing files. There are too many
15683 to list here. In general, makefiles that call out individual
15684 files will require rebuilding.
15686 Interpreter files renamed. All interpreter files now have the
15687 prefix am* instead of ie* and is*.
15689 Header files renamed: The acapi.h file is now acpixf.h. The
15690 acpiosd.h file is now acpiosxf.h. We are removing references to
15691 the acronym "API" since it is somewhat windowsy. The new name is
15692 "external interface" or xface or xf in the filenames.j
15695 All manifest constants have been forced to upper case (some were
15696 mixed case.) Also, the string "ACPI_" has been prepended to many
15697 (not all) of the constants, typedefs, and structs.
15699 The globals "DebugLevel" and "DebugLayer" have been renamed
15700 "AcpiDbgLevel" and "AcpiDbgLayer" respectively.
15702 All other globals within the subsystem are now prefixed with
15703 "AcpiGbl_" Internal procedures within the subsystem are now
15704 prefixed with "Acpi" (with only a few exceptions). The original
15705 two-letter abbreviation for the subcomponent remains after "Acpi"
15706 - for example, CmCallocate became AcpiCmCallocate.
15708 Added a source code translation/conversion utility. Used to
15709 generate the Linux source code, it can be modified to generate
15710 other types of source as well. Can also be used to cleanup
15711 existing source by removing extraneous spaces and blank lines.
15712 Found in tools/acpisrc/*
15714 OsdUnMapMemory was renamed to OsdUnmapMemory and then
15715 AcpiOsUnmapMemory. (UnMap became Unmap).
15717 A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore.
15718 When set to one, this indicates that the caller wants to use the
15720 semaphore as a mutex, not a counting semaphore. ACPI CA uses
15721 both types. However, implementers of this call may want to use
15722 different OS primitives depending on the type of semaphore
15723 requested. For example, some operating systems provide separate
15725 "mutex" and "semaphore" interfaces - where the mutex interface is
15726 much faster because it doesn't have all the overhead of a full
15727 semaphore implementation.
15729 Fixed a deadlock problem where a method that accesses the PCI
15730 address space can block forever if it is the first access to the
15733 -------------------------------------------
15734 Summary of changes for this label: 06_02_00
15736 Support for environments that cannot handle unaligned data
15737 accesses (e.g. firmware and OS environments devoid of alignment
15738 handler technology namely SAL/EFI and the IA-64 Linux kernel) has
15739 been added (via configurable macros) in these three areas: -
15740 Transfer of data from the raw AML byte stream is done via byte
15741 moves instead of word/dword/qword moves. - External objects are
15742 aligned within the user buffer, including package elements (sub-
15743 objects). - Conversion of name strings to UINT32 Acpi Names is now
15746 The Store operator was modified to mimic Microsoft's
15747 implementation when storing to a Buffer Field.
15749 Added a check of the BM_STS bit before entering C3.
15751 The methods subdirectory has been obsoleted and removed. A new
15752 file, cmeval.c subsumes the functionality.
15754 A 16-bit (DOS) version of AcpiExec has been developed. The
15755 makefile is under the acpiexec directory.