1 ----------------------------------------
2 08 April 2015. Summary of changes for version 20150515:
4 This release implements most of ACPI 6.0 as described below.
6 1) ACPICA kernel-resident subsystem:
8 Implemented runtime argument checking and return value checking for all
9 new ACPI 6.0 predefined names. This includes: _BTH, _CR3, _DSD, _LPI,
10 _MTL, _PRR, _RDI, _RST, _TFP, _TSN.
12 Example Code and Data Size: These are the sizes for the OS-independent
13 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
14 debug version of the code includes the debug output trace mechanism and
15 has a much larger code and data size.
18 Non-Debug Version: 99.9K Code, 27.5K Data, 127.4K Total
19 Debug Version: 195.2K Code, 80.8K Data, 276.0K Total
21 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total
22 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total
25 2) iASL Compiler/Disassembler and Tools:
27 iASL compiler: Added compile-time support for all new ACPI 6.0 predefined
28 names (argument count validation and return value typechecking.)
30 iASL disassembler and table compiler: implemented support for all new
31 ACPI 6.0 tables. This includes: DRTM, IORT, LPIT, NFIT, STAO, WPBT, XENV.
33 iASL disassembler and table compiler: Added ACPI 6.0 changes to existing
36 iASL preprocessor: Added a new directive to enable inclusion of binary
37 blobs into ASL code. The new directive is #includebinary. It takes a
38 binary file as input and emits a named ascii buffer object into the ASL
41 AcpiHelp: Added support for all new ACPI 6.0 predefined names.
43 AcpiHelp: Added a new option, -d, to display all iASL preprocessor
46 AcpiHelp: Added a new option, -t, to display all known/supported ACPI
49 ----------------------------------------
50 10 April 2015. Summary of changes for version 20150410:
52 Reverted a change introduced in version 20150408 that caused
53 a regression in the disassembler where incorrect operator
54 symbols could be emitted.
56 ----------------------------------------
57 08 April 2015. Summary of changes for version 20150408:
60 1) ACPICA kernel-resident subsystem:
62 Permanently set the return value for the _REV predefined name. It now
63 returns 2 (was 5). This matches other ACPI implementations. _REV will be
64 deprecated in the future, and is now defined to be 1 for ACPI 1.0, and 2
65 for ACPI 2.0 and later. It should never be used to differentiate or
66 identify operating systems.
68 Added the "Windows 2015" string to the _OSI support. ACPICA will now
69 return TRUE to a query with this string.
71 Fixed several issues with the local version of the printf function.
73 Added the C99 compiler option (-std=c99) to the Unix makefiles.
76 Non-Debug Version: 99.9K Code, 27.4K Data, 127.3K Total
77 Debug Version: 195.2K Code, 80.7K Data, 275.9K Total
79 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
80 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
83 2) iASL Compiler/Disassembler and Tools:
85 iASL: Implemented an enhancement to the constant folding feature to
86 transform the parse tree to a simple Store operation whenever possible:
87 Add (2, 3, X) ==> is converted to: Store (5, X)
88 X = 2 + 3 ==> is converted to: Store (5, X)
90 Updated support for the SLIC table (Software Licensing Description Table)
91 in both the Data Table compiler and the disassembler. The SLIC table
92 support now conforms to "Microsoft Software Licensing Tables (SLIC and
93 MSDM). November 29, 2011. Copyright 2011 Microsoft". Note: Any SLIC data
94 following the ACPI header is now defined to be "Proprietary Data", and as
95 such, can only be entered or displayed as a hex data block.
97 Implemented full support for the MSDM table as described in the document
98 above. Note: The format of MSDM is similar to SLIC. Any MSDM data
99 following the ACPI header is defined to be "Proprietary Data", and can
100 only be entered or displayed as a hex data block.
102 Implemented the -Pn option for the iASL Table Compiler (was only
103 implemented for the ASL compiler). This option disables the iASL
106 Disassembler: For disassembly of Data Tables, added a comment field
107 around the Ascii equivalent data that is emitted as part of the "Raw
108 Table Data" block. This prevents the iASL Preprocessor from possible
109 confusion if/when the table is compiled.
111 Disassembler: Added an option (-df) to force the disassembler to assume
112 that the table being disassembled contains valid AML. This feature is
113 useful for disassembling AML files that contain ACPI signatures other
114 than DSDT or SSDT (such as OEMx or other signatures).
116 Changes for the EFI version of the tools:
117 1) Fixed a build error/issue
118 2) Fixed a cast warning
120 iASL: Fixed a path issue with the __FILE__ operator by making the
121 directory prefix optional within the internal SplitInputFilename
124 Debugger: Removed some unused global variables.
126 Tests: Updated the makefile for proper generation of the AAPITS suite.
128 ----------------------------------------
129 04 February 2015. Summary of changes for version 20150204:
131 ACPICA kernel-resident subsystem:
133 Updated all ACPICA copyrights and signons to 2014. Added the 2014
134 copyright to all module headers and signons, including the standard Linux
135 header. This affects virtually every file in the ACPICA core subsystem,
136 iASL compiler, all ACPICA utilities, and the test suites.
138 Events: Introduce ACPI_GPE_DISPATCH_RAW_HANDLER to fix GPE storm issues.
139 A raw gpe handling mechanism was created to allow better handling of GPE
140 storms that aren't easily managed by the normal handler. The raw handler
141 allows disabling/renabling of the the GPE so that interrupt storms can be
142 avoided in cases where events cannot be timely serviced. In this
143 scenario, handlers should use the AcpiSetGpe() API to disable/enable the
144 GPE. This API will leave the reference counts undisturbed, thereby
145 preventing unintentional clearing of the GPE when the intent in only to
146 temporarily disable it. Raw handlers allow enabling and disabling of a
147 GPE by removing GPE register locking. As such, raw handlers much provide
148 their own locks while using GPE API's to protect access to GPE data
152 Events: Always modify GPE registers under the GPE lock.
153 Applies GPE lock around AcpiFinishGpe() to protect access to GPE register
154 values. Reported as bug by joe.liu@apple.com.
156 Unix makefiles: Separate option to disable optimizations and
157 _FORTIFY_SOURCE. This change removes the _FORTIFY_SOURCE flag from the
158 NOOPT disable option and creates a separate flag (NOFORTIFY) for this
159 purpose. Some toolchains may define _FORTIFY_SOURCE which leads redefined
160 errors when building ACPICA. This allows disabling the option without
161 also having to disable optimazations.
165 Non-Debug Version: 101.7K Code, 27.9K Data, 129.6K Total
166 Debug Version: 199.2K Code, 82.4K Data, 281.6K Total
168 ----------------------------------------
169 07 November 2014. Summary of changes for version 20141107:
171 This release is available at https://acpica.org/downloads
173 This release introduces and implements language extensions to ASL that
174 provide support for symbolic ("C-style") operators and expressions. These
175 language extensions are known collectively as ASL+.
178 1) iASL Compiler/Disassembler and Tools:
180 Disassembler: Fixed a problem with disassembly of the UartSerialBus
181 macro. Changed "StopBitsNone" to the correct "StopBitsZero". David E.
184 Disassembler: Fixed the Unicode macro support to add escape sequences.
185 All non-printable ASCII values are emitted as escape sequences, as well
186 as the standard escapes for quote and backslash. Ensures that the
187 disassembled macro can be correctly recompiled.
189 iASL: Added Printf/Fprintf macros for formatted output. These macros are
190 translated to existing AML Concatenate and Store operations. Printf
191 writes to the ASL Debug object. Fprintf allows the specification of an
192 ASL name as the target. Only a single format specifier is required, %o,
193 since the AML interpreter dynamically converts objects to the required
196 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate
197 (Concatenate (Concatenate (Concatenate ("", Arg0),
198 ": Unexpected value for "), Arg1), ", "), Arg2),
199 " at line "), Arg3), Debug)
201 (new) Printf ("%o: Unexpected value for %o, %o at line %o",
202 Arg0, Arg1, Arg2, Arg3)
204 (old) Store (Concatenate (Concatenate (Concatenate (Concatenate
205 ("", Arg1), ": "), Arg0), " Successful"), STR1)
207 (new) Fprintf (STR1, "%o: %o Successful", Arg1, Arg0)
209 iASL: Added debug options (-bp, -bt) to dynamically prune levels of the
210 ASL parse tree before the AML code is generated. This allows blocks of
211 ASL code to be removed in order to help locate and identify problem
212 devices and/or code. David E. Box.
214 AcpiExec: Added support (-fi) for an optional namespace object
215 initialization file. This file specifies initial values for namespace
216 objects as necessary for debugging and testing different ASL code paths
217 that may be taken as a result of BIOS options.
220 2) Overview of symbolic operator support for ASL (ASL+)
221 -------------------------------------------------------
223 As an extension to the ASL language, iASL implements support for symbolic
224 (C-style) operators for math and logical expressions. This can greatly
225 simplify ASL code as well as improve both readability and
226 maintainability. These language extensions can exist concurrently with
227 all legacy ASL code and expressions.
229 The symbolic extensions are 100% compatible with existing AML
230 interpreters, since no new AML opcodes are created. To implement the
231 extensions, the iASL compiler transforms the symbolic expressions into
232 the legacy ASL/AML equivalents at compile time.
234 Full symbolic expressions are supported, along with the standard C
235 precedence and associativity rules.
237 Full disassembler support for the symbolic expressions is provided, and
238 creates an automatic migration path for existing ASL code to ASL+ code
239 via the disassembly process. By default, the disassembler now emits ASL+
240 code with symbolic expressions. An option (-dl) is provided to force the
241 disassembler to emit legacy ASL code if desired.
243 Below is the complete list of the currently supported symbolic operators
244 with examples. See the iASL User Guide for additional information.
247 ASL+ Syntax Legacy ASL Equivalent
248 ----------- ---------------------
252 Z = X + Y Add (X, Y, Z)
253 Z = X - Y Subtract (X, Y, Z)
254 Z = X * Y Multiply (X, Y, Z)
255 Z = X / Y Divide (X, Y, , Z)
256 Z = X % Y Mod (X, Y, Z)
257 Z = X << Y ShiftLeft (X, Y, Z)
258 Z = X >> Y ShiftRight (X, Y, Z)
259 Z = X & Y And (X, Y, Z)
260 Z = X | Y Or (X, Y, Z)
261 Z = X ^ Y Xor (X, Y, Z)
268 (X == Y) LEqual (X, Y)
269 (X != Y) LNotEqual (X, Y)
271 (X > Y) LGreater (X, Y)
272 (X <= Y) LLessEqual (X, Y)
273 (X >= Y) LGreaterEqual (X, Y)
278 // Assignment and compound assignment operations
282 X -= Y Subtract (X, Y, X)
283 X *= Y Multiply (X, Y, X)
284 X /= Y Divide (X, Y, , X)
286 X <<= Y ShiftLeft (X, Y, X)
287 X >>= Y ShiftRight (X, Y, X)
297 If (LOr (LOr (LEqual (And (R510, 0x03FB), 0x02E0), LEqual (
298 And (R520, 0x03FB), 0x02E0)), LOr (LEqual (And (R530,
300 0x02E0), LEqual (And (R540, 0x03FB), 0x02E0))))
302 And (MEMB, 0xFFFFFFF0, SRMB)
305 And (PDBM, 0xFFFFFFFFFFFFFFF9, PDBM)
307 Or (PDBM, 0x02, PDBM)
311 If (((R510 & 0x03FB) == 0x02E0) ||
312 ((R520 & 0x03FB) == 0x02E0) ||
313 ((R530 & 0x03FB) == 0x02E0) ||
314 ((R540 & 0x03FB) == 0x02E0))
316 SRMB = (MEMB & 0xFFFFFFF0)
319 PDBM &= 0xFFFFFFFFFFFFFFF9
325 Store (0x1234, Local1)
326 Multiply (Add (Add (Local1, TEST), 0x20), Local2, Local3)
327 Multiply (Local2, Add (Add (Local1, TEST), 0x20), Local3)
328 Add (Local1, Add (TEST, Multiply (0x20, Local2)), Local3)
329 Store (Index (PKG1, 0x03), Local6)
330 Store (Add (Local3, Local2), Debug)
331 Add (Local1, 0x0F, Local2)
332 Add (Local1, Multiply (Local2, Local3), Local2)
333 Multiply (Add (Add (Local1, TEST), 0x20), ToBCD (Local1), Local3)
337 Local3 = (((Local1 + TEST) + 0x20) * Local2)
338 Local3 = (Local2 * ((Local1 + TEST) + 0x20))
339 Local3 = (Local1 + (TEST + (0x20 * Local2)))
340 Local6 = Index (PKG1, 0x03)
341 Debug = (Local3 + Local2)
342 Local2 = (Local1 + 0x0F)
343 Local2 = (Local1 + (Local2 * Local3))
344 Local3 = (((Local1 + TEST) + 0x20) * ToBCD (Local1))
347 ----------------------------------------
348 26 September 2014. Summary of changes for version 20140926:
350 1) ACPICA kernel-resident subsystem:
352 Updated the GPIO operation region handler interface (GeneralPurposeIo).
353 In order to support GPIO Connection objects with multiple pins, along
354 with the related Field objects, the following changes to the interface
355 have been made: The Address is now defined to be the offset in bits of
356 the field unit from the previous invocation of a Connection. It can be
357 viewed as a "Pin Number Index" into the connection resource descriptor.
358 The BitWidth is the exact bit width of the field. It is usually one bit,
359 but not always. See the ACPICA reference guide (section 8.8.6.2.1) for
360 additional information and examples.
362 GPE support: During ACPICA/GPE initialization, ensure that all GPEs with
363 corresponding _Lxx/_Exx methods are disabled (they may have been enabled
364 by the firmware), so that they cannot fire until they are enabled via
365 AcpiUpdateAllGpes. Rafael J. Wysocki.
367 Added a new return flag for the Event/GPE status interfaces --
368 AcpiGetEventStatus and AcpiGetGpeStatus. The new
369 ACPI_EVENT_FLAGS_HAS_HANDLER flag is used to indicate that the event or
370 GPE currently has a handler associated with it, and can thus actually
371 affect the system. Lv Zheng.
373 Example Code and Data Size: These are the sizes for the OS-independent
374 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
375 debug version of the code includes the debug output trace mechanism and
376 has a much larger code and data size.
379 Non-Debug Version: 99.1K Code, 27.3K Data, 126.4K Total
380 Debug Version: 192.8K Code, 79.9K Data, 272.7K Total
382 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
383 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
385 2) iASL Compiler/Disassembler and Tools:
387 iASL: Fixed a memory allocation/free regression introduced in 20140828
388 that could cause the compiler to crash. This was introduced inadvertently
389 during the effort to eliminate compiler memory leaks. ACPICA BZ 1111,
392 iASL: Removed two error messages that have been found to create false
393 positives, until they can be fixed and fully validated (ACPICA BZ 1112):
394 1) Illegal forward reference within a method
395 2) Illegal reference across two methods
397 iASL: Implemented a new option (-lm) to create a hardware mapping file
398 that summarizes all GPIO, I2C, SPI, and UART connections. This option
399 works for both the compiler and disassembler. See the iASL compiler user
400 guide for additional information and examples (section 6.4.6).
402 AcpiDump: Added support for the version 1 (ACPI 1.0) RSDP in addition to
403 version 2. This corrects the AE_BAD_HEADER exception seen on systems with
404 a version 1 RSDP. Lv Zheng ACPICA BZ 1097.
406 AcpiExec: For Unix versions, don't attempt to put STDIN into raw mode
407 unless STDIN is actually a terminal. Assists with batch-mode processing.
410 Disassembler/AcpiHelp: Added another large group of recognized _HID
414 ----------------------------------------
415 28 August 2014. Summary of changes for version 20140828:
417 1) ACPICA kernel-resident subsystem:
419 Fixed a problem related to the internal use of the Timer() operator where
420 a 64-bit divide could cause an attempted link to a double-precision math
421 library. This divide is not actually necessary, so the code was
422 restructured to eliminate it. Lv Zheng.
424 ACPI 5.1: Added support for the runtime validation of the _DSD package
425 (similar to the iASL support).
427 ACPI 5.1/Headers: Added support for the GICC affinity subtable to the
428 SRAT table. Hanjun Guo <hanjun.guo@linaro.org>.
430 Example Code and Data Size: These are the sizes for the OS-independent
431 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
432 debug version of the code includes the debug output trace mechanism and
433 has a much larger code and data size.
436 Non-Debug Version: 98.8K Code, 27.3K Data, 126.1K Total
437 Debug Version: 192.1K Code, 79.8K Data, 271.9K Total
439 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total1
440 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total
442 2) iASL Compiler/Disassembler and Tools:
444 AcpiExec: Fixed a problem on unix systems where the original terminal
445 state was not always properly restored upon exit. Seen when using the -v
446 option. ACPICA BZ 1104.
448 iASL: Fixed a problem with the validation of the ranges/length within the
449 Memory24 resource descriptor. There was a boundary condition when the
450 range was equal to the (length -1) caused by the fact that these values
451 are defined in 256-byte blocks, not bytes. ACPICA BZ 1098
453 Disassembler: Fixed a problem with the GpioInt descriptor interrupt
455 flags. The flags are actually 2 bits, not 1, and the "ActiveBoth" keyword
457 now supported properly.
459 ACPI 5.1: Added the GICC affinity subtable to the SRAT table. Supported
460 in the disassembler, data table compiler, and table template generator.
462 iASL: Added a requirement for Device() objects that one of either a _HID
463 or _ADR must exist within the scope of a Device, as per the ACPI
464 specification. Remove a similar requirement that was incorrectly in place
467 iASL: Added error detection for illegal named references within control
468 methods that would cause runtime failures. Now trapped as errors are: 1)
469 References to objects within a non-parent control method. 2) Forward
470 references (within a method) -- for control methods, AML interpreters use
471 a one-pass parse of control methods. ACPICA BZ 1008.
473 iASL: Added error checking for dependencies related to the _PSx power
474 methods. ACPICA BZ 1029.
475 1) For _PS0, one of these must exist within the same scope: _PS1, _PS2,
477 2) For _PS1, _PS2, and PS3: A _PS0 object must exist within the same
480 iASL and table compiler: Cleanup miscellaneous memory leaks by fully
481 deploying the existing object and string caches and adding new caches for
484 iASL: Split the huge parser source file into multiple subfiles to improve
485 manageability. Generation now requires the M4 macro preprocessor, which
486 is part of the Bison distribution on both unix and windows platforms.
488 AcpiSrc: Fixed and removed all extraneous warnings generated during
489 entire ACPICA source code scan and/or conversion.
492 ----------------------------------------
494 24 July 2014. Summary of changes for version 20140724:
496 The ACPI 5.1 specification has been released and is available at:
497 http://uefi.org/specs/access
500 0) ACPI 5.1 support in ACPICA:
502 ACPI 5.1 is fully supported in ACPICA as of this release.
504 New predefined names. Support includes iASL and runtime ACPICA
506 _CCA (Cache Coherency Attribute).
507 _DSD (Device-Specific Data). David Box.
509 Modifications to existing ACPI tables. Support includes headers, iASL
510 Data Table compiler, disassembler, and the template generator.
511 FADT - New fields and flags. Graeme Gregory.
512 GTDT - One new subtable and new fields. Tomasz Nowicki.
513 MADT - Two new subtables. Tomasz Nowicki.
514 PCCT - One new subtable.
517 New notification type for System Resource Affinity change events.
520 1) ACPICA kernel-resident subsystem:
522 Fixed a regression introduced in 20140627 where a fault can happen during
523 the deletion of Alias AML namespace objects. The problem affected both
524 the core ACPICA and the ACPICA tools including iASL and AcpiExec.
526 Implemented a new GPE public interface, AcpiMarkGpeForWake. Provides a
527 simple mechanism to enable wake GPEs that have no associated handler or
528 control method. Rafael Wysocki.
530 Updated the AcpiEnableGpe interface to disallow the enable if there is no
531 handler or control method associated with the particular GPE. This will
532 help avoid meaningless GPEs and even GPE floods. Rafael Wysocki.
534 Updated GPE handling and dispatch by disabling the GPE before clearing
535 the status bit for edge-triggered GPEs. Lv Zheng.
537 Added Timer() support to the AML Debug object. The current timer value is
538 now displayed with each invocation of (Store to) the debug object to
539 enable simple generation of execution times for AML code (method
540 execution for example.) ACPICA BZ 1093.
542 Example Code and Data Size: These are the sizes for the OS-independent
543 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
544 debug version of the code includes the debug output trace mechanism and
545 has a much larger code and data size.
548 Non-Debug Version: 98.7K Code, 27.3K Data, 126.0K Total
549 Debug Version: 192.0K Code, 79.7K Data, 271.7K Total
551 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total
552 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total
555 2) iASL Compiler/Disassembler and Tools:
557 Fixed an issue with the recently added local printf implementation,
558 concerning width/precision specifiers that could cause incorrect output.
559 Lv Zheng. ACPICA BZ 1094.
561 Disassembler: Added support to detect buffers that contain UUIDs and
562 disassemble them to an invocation of the ToUUID operator. Also emit
563 commented descriptions of known ACPI-related UUIDs.
565 AcpiHelp: Added support to display known ACPI-related UUIDs. New option,
566 -u. Adds three new files.
568 iASL: Update table compiler and disassembler for DMAR table changes that
569 were introduced in September 2013. With assistance by David Woodhouse.
571 ----------------------------------------
572 27 June 2014. Summary of changes for version 20140627:
574 1) ACPICA kernel-resident subsystem:
576 Formatted Output: Implemented local versions of standard formatted output
577 utilities such as printf, etc. Over time, it has been discovered that
578 there are in fact many portability issues with printf, and the addition
579 of this feature will fix/prevent these issues once and for all. Some
580 known issues are summarized below:
582 1) Output of 64-bit values is not portable. For example, UINT64 is %ull
583 for the Linux kernel and is %uI64 for some MSVC versions.
584 2) Invoking printf consistently in a manner that is portable across both
585 32-bit and 64-bit platforms is difficult at best in many situations.
586 3) The output format for pointers varies from system to system (leading
587 zeros especially), and leads to inconsistent output from ACPICA across
589 4) Certain platform-specific printf formats may conflict with ACPICA use.
590 5) If there is no local C library available, ACPICA now has local support
593 -- To address these printf issues in a complete manner, ACPICA now
594 directly implements a small subset of printf format specifiers, only
595 those that it requires. Adds a new file, utilities/utprint.c. Lv Zheng.
597 Implemented support for ACPICA generation within the EFI environment.
598 Initially, the AcpiDump utility is supported in the UEFI shell
599 environment. Lv Zheng.
601 Added a new external interface, AcpiLogError, to improve ACPICA
602 portability. This allows the host to redirect error messages from the
603 ACPICA utilities. Lv Zheng.
605 Added and deployed new OSL file I/O interfaces to improve ACPICA
613 There are C library implementations of these functions in the new file
614 service_layers/oslibcfs.c -- however, the functions can be implemented by
615 the local host in any way necessary. Lv Zheng.
617 Implemented a mechanism to disable/enable ACPI table checksum validation
618 at runtime. This can be useful when loading tables very early during OS
619 initialization when it may not be possible to map the entire table in
620 order to compute the checksum. Lv Zheng.
622 Fixed a buffer allocation issue for the Generic Serial Bus support.
623 Originally, a fixed buffer length was used. This change allows for
624 variable-length buffers based upon the protocol indicated by the field
625 access attributes. Reported by Lan Tianyu. Lv Zheng.
627 Fixed a problem where an object detached from a namespace node was not
628 properly terminated/cleared and could cause a circular list problem if
629 reattached. ACPICA BZ 1063. David Box.
631 Fixed a possible recursive lock acquisition in hwregs.c. Rakib Mullick.
633 Fixed a possible memory leak in an error return path within the function
634 AcpiUtCopyIobjectToIobject. ACPICA BZ 1087. Colin Ian King.
636 Example Code and Data Size: These are the sizes for the OS-independent
637 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
638 debug version of the code includes the debug output trace mechanism and
639 has a much larger code and data size.
642 Non-Debug Version: 98.7K Code, 27.2K Data, 125.9K Total
643 Debug Version: 191.7K Code, 79.6K Data, 271.3K Total
645 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total
646 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total
649 2) iASL Compiler/Disassembler and Tools:
651 Disassembler: Add dump of ASCII equivalent text within a comment at the
652 end of each line of the output for the Buffer() ASL operator.
654 AcpiDump: Miscellaneous changes:
655 Fixed repetitive table dump in -n mode.
656 For older EFI platforms, use the ACPI 1.0 GUID during RSDP search if
657 the ACPI 2.0 GUID fails.
659 iASL: Fixed a problem where the compiler could fault if incorrectly given
660 an acpidump output file as input. ACPICA BZ 1088. David Box.
662 AcpiExec/AcpiNames: Fixed a problem where these utilities could fault if
663 they are invoked without any arguments.
665 Debugger: Fixed a possible memory leak in an error return path. ACPICA BZ
666 1086. Colin Ian King.
668 Disassembler: Cleaned up a block of code that extracts a parent Op
669 object. Added a comment that explains that the parent is guaranteed to be
670 valid in this case. ACPICA BZ 1069.
672 ----------------------------------------
673 24 April 2014. Summary of changes for version 20140424:
675 1) ACPICA kernel-resident subsystem:
677 Implemented support to skip/ignore NULL address entries in the RSDT/XSDT.
678 Some of these tables are known to contain a trailing NULL entry. Lv
681 Removed an extraneous error message for the case where there are a large
682 number of system GPEs (> 124). This was the "32-bit FADT register is too
683 long to convert to GAS struct" message, which is irrelevant for GPEs
684 since the GPEx_BLK_LEN fields of the FADT are always used instead of the
685 (limited capacity) GAS bit length. Also, several changes to ensure proper
686 support for GPE numbers > 255, where some "GPE number" fields were 8-bits
689 Implemented and deployed additional configuration support for the public
690 ACPICA external interfaces. Entire classes of interfaces can now be
691 easily modified or configured out, replaced by stubbed inline functions
692 by default. Lv Zheng.
694 Moved all public ACPICA runtime configuration globals to the public
695 ACPICA external interface file for convenience. Also, removed some
696 obsolete/unused globals. See the file acpixf.h. Lv Zheng.
698 Documentation: Added a new section to the ACPICA reference describing the
699 maximum number of GPEs that can be supported by the FADT-defined GPEs in
700 block zero and one. About 1200 total. See section 4.4.1 of the ACPICA
703 Example Code and Data Size: These are the sizes for the OS-independent
704 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
705 debug version of the code includes the debug output trace mechanism and
706 has a much larger code and data size.
709 Non-Debug Version: 96.8K Code, 27.2K Data, 124.0K Total
710 Debug Version: 189.5K Code, 79.7K Data, 269.2K Total
712 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total
713 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
716 2) iASL Compiler/Disassembler and Tools:
718 iASL and disassembler: Add full support for the LPIT table (Low Power
719 Idle Table). Includes support in the disassembler, data table compiler,
720 and template generator.
723 1) Add option to force the use of the RSDT (over the XSDT).
724 2) Improve validation of the RSDP signature (use 8 chars instead of 4).
726 iASL: Add check for predefined packages that are too large. For
727 predefined names that contain subpackages, check if each subpackage is
728 too large. (Check for too small already exists.)
730 Debugger: Updated the GPE command (which simulates a GPE by executing the
731 GPE code paths in ACPICA). The GPE device is now optional, and defaults
732 to the GPE 0/1 FADT-defined blocks.
734 Unix application OSL: Update line-editing support. Add additional error
735 checking and take care not to reset terminal attributes on exit if they
736 were never set. This should help guarantee that the terminal is always
737 left in the previous state on program exit.
739 ----------------------------------------
740 25 March 2014. Summary of changes for version 20140325:
742 1) ACPICA kernel-resident subsystem:
744 Updated the auto-serialize feature for control methods. This feature
745 automatically serializes all methods that create named objects in order
746 to prevent runtime errors. The update adds support to ignore the
747 currently executing AML SyncLevel when invoking such a method, in order
748 to prevent disruption of any existing SyncLevel priorities that may exist
749 in the AML code. Although the use of SyncLevels is relatively rare, this
750 change fixes a regression where an AE_AML_MUTEX_ORDER exception can
751 appear on some machines starting with the 20140214 release.
753 Added a new external interface to allow the host to install ACPI tables
754 very early, before the namespace is even created. AcpiInstallTable gives
755 the host additional flexibility for ACPI table management. Tables can be
756 installed directly by the host as if they had originally appeared in the
757 XSDT/RSDT. Installed tables can be SSDTs or other ACPI data tables
758 (anything except the DSDT and FACS). Adds a new file, tbdata.c, along
759 with additional internal restructuring and cleanup. See the ACPICA
760 Reference for interface details. Lv Zheng.
762 Added validation of the checksum for all incoming dynamically loaded
763 tables (via external interfaces or via AML Load/LoadTable operators). Lv
766 Updated the use of the AcpiOsWaitEventsComplete interface during Notify
767 and GPE handler removal. Restructured calls to eliminate possible race
768 conditions. Lv Zheng.
770 Added a warning for the use/execution of the ASL/AML Unload (table)
771 operator. This will help detect and identify machines that use this
772 operator if and when it is ever used. This operator has never been seen
773 in the field and the usage model and possible side-effects of the drastic
774 runtime action of a full table removal are unknown.
776 Reverted the use of #pragma push/pop which was introduced in the 20140214
777 release. It appears that push and pop are not implemented by enough
778 compilers to make the use of this feature feasible for ACPICA at this
779 time. However, these operators may be deployed in a future ACPICA
782 Added the missing EXPORT_SYMBOL macros for the install and remove SCI
785 Source code generation:
786 1) Disabled the use of the "strchr" macro for the gcc-specific
787 generation. For some versions of gcc, this macro can periodically expose
788 a compiler bug which in turn causes compile-time error(s).
789 2) Added support for PPC64 compilation. Colin Ian King.
791 Example Code and Data Size: These are the sizes for the OS-independent
792 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
793 debug version of the code includes the debug output trace mechanism and
794 has a much larger code and data size.
797 Non-Debug Version: 97.0K Code, 27.2K Data, 124.2K Total
798 Debug Version: 189.7K Code, 79.5K Data, 269.2K Total
800 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
801 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
804 2) iASL Compiler/Disassembler and Tools:
806 Disassembler: Added several new features to improve the readability of
807 the resulting ASL code. Extra information is emitted within comment
808 fields in the ASL code:
809 1) Known _HID/_CID values are decoded to descriptive text.
810 2) Standard values for the Notify() operator are decoded to descriptive
812 3) Target operands are expanded to full pathnames (in a comment) when
815 Disassembler: Miscellaneous updates for extern() handling:
816 1) Abort compiler if file specified by -fe option does not exist.
817 2) Silence unnecessary warnings about argument count mismatches.
818 3) Update warning messages concerning unresolved method externals.
819 4) Emit "UnknownObj" keyword for externals whose type cannot be
823 1) Added the -a option to display both the ASL syntax and the AML
824 encoding for an input ASL operator. This effectively displays all known
825 information about an ASL operator with one AcpiHelp invocation.
826 2) Added substring match support (similar to a wildcard) for the -i
827 (_HID/PNP IDs) option.
829 iASL/Disassembler: Since this tool does not yet support execution on big-
830 endian machines, added detection of endianness and an error message if
831 execution is attempted on big-endian. Support for big-endian within iASL
832 is a feature that is on the ACPICA to-be-done list.
835 1) Remove option to extract binary files from an acpidump; this function
836 is made obsolete by the AcpiXtract utility.
837 2) General cleanup of open files and allocated buffers.
839 ----------------------------------------
840 14 February 2014. Summary of changes for version 20140214:
842 1) ACPICA kernel-resident subsystem:
844 Implemented a new mechanism to proactively prevent problems with ill-
845 behaved reentrant control methods that create named ACPI objects. This
846 behavior is illegal as per the ACPI specification, but is nonetheless
847 frequently seen in the field. Previously, this could lead to an
848 AE_ALREADY_EXISTS exception if the method was actually entered by more
849 than one thread. This new mechanism detects such methods at table load
850 time and marks them "serialized" to prevent reentrancy. A new global
851 option, AcpiGbl_AutoSerializeMethods, has been added to disable this
852 feature if desired. This mechanism and global option obsoletes and
853 supersedes the previous AcpiGbl_SerializeAllMethods option.
855 Added the "Windows 2013" string to the _OSI support. ACPICA will now
856 respond TRUE to _OSI queries with this string. It is the stated policy of
857 ACPICA to add new strings to the _OSI support as soon as possible after
858 they are defined. See the full ACPICA _OSI policy which has been added to
859 the utilities/utosi.c file.
861 Hardened/updated the _PRT return value auto-repair code:
862 1) Do not abort the repair on a single subpackage failure, continue to
863 check all subpackages.
864 2) Add check for the minimum subpackage length (4).
865 3) Properly handle extraneous NULL package elements.
867 Added support to avoid the possibility of infinite loops when traversing
868 object linked lists. Never allow an infinite loop, even in the face of
869 corrupted object lists.
871 ACPICA headers: Deployed the use of #pragma pack(push) and #pragma
872 pack(pop) directives to ensure that the ACPICA headers are independent of
873 compiler settings or other host headers.
875 Example Code and Data Size: These are the sizes for the OS-independent
876 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
877 debug version of the code includes the debug output trace mechanism and
878 has a much larger code and data size.
881 Non-Debug Version: 96.5K Code, 27.2K Data, 123.7K Total
882 Debug Version: 188.6K Code, 79.0K Data, 267.6K Total
884 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
885 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
888 2) iASL Compiler/Disassembler and Tools:
890 iASL/Table-compiler: Fixed a problem with support for the SPMI table. The
891 first reserved field was incorrectly forced to have a value of zero. This
892 change correctly forces the field to have a value of one. ACPICA BZ 1081.
894 Debugger: Added missing support for the "Extra" and "Data" subobjects
895 when displaying object data.
897 Debugger: Added support to display entire object linked lists when
898 displaying object data.
900 iASL: Removed the obsolete -g option to obtain ACPI tables from the
901 Windows registry. This feature has been superseded by the acpidump
904 ----------------------------------------
905 14 January 2014. Summary of changes for version 20140114:
907 1) ACPICA kernel-resident subsystem:
909 Updated all ACPICA copyrights and signons to 2014. Added the 2014
910 copyright to all module headers and signons, including the standard Linux
911 header. This affects virtually every file in the ACPICA core subsystem,
912 iASL compiler, all ACPICA utilities, and the test suites.
914 Improved parameter validation for AcpiInstallGpeBlock. Added the
916 1) The incoming device handle refers to type ACPI_TYPE_DEVICE.
917 2) There is not already a GPE block attached to the device.
918 Likewise, with AcpiRemoveGpeBlock, ensure that the incoming object is a
921 Correctly support "references" in the ACPI_OBJECT. This change fixes the
922 support to allow references (namespace nodes) to be passed as arguments
923 to control methods via the evaluate object interface. This is probably
924 most useful for testing purposes, however.
926 Improved support for 32/64 bit physical addresses in printf()-like
927 output. This change improves the support for physical addresses in printf
928 debug statements and other output on both 32-bit and 64-bit hosts. It
929 consistently outputs the appropriate number of bytes for each host. The
930 %p specifier is unsatisfactory since it does not emit uniform output on
931 all hosts/clib implementations (on some, leading zeros are not supported,
932 leading to difficult-to-read output).
934 Example Code and Data Size: These are the sizes for the OS-independent
935 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
936 debug version of the code includes the debug output trace mechanism and
937 has a much larger code and data size.
940 Non-Debug Version: 96.2K Code, 27.0K Data, 123.2K Total
941 Debug Version: 187.5K Code, 78.3K Data, 265.8K Total
943 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
944 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
947 2) iASL Compiler/Disassembler and Tools:
949 iASL: Fix a possible fault when using the Connection() operator. Fixes a
950 problem if the parent Field definition for the Connection operator refers
951 to an operation region that does not exist. ACPICA BZ 1064.
953 AcpiExec: Load of local test tables is now optional. The utility has the
954 capability to load some various tables to test features of ACPICA.
955 However, there are enough of them that the output of the utility became
956 confusing. With this change, only the required local tables are displayed
957 (RSDP, XSDT, etc.) along with the actual tables loaded via the command
958 line specification. This makes the default output simler and easier to
959 understand. The -el command line option restores the original behavior
960 for testing purposes.
962 AcpiExec: Added support for overlapping operation regions. This change
963 expands the simulation of operation regions by supporting regions that
964 overlap within the given address space. Supports SystemMemory and
965 SystemIO. ASLTS test suite updated also. David Box. ACPICA BZ 1031.
967 AcpiExec: Added region handler support for PCI_Config and EC spaces. This
968 allows AcpiExec to simulate these address spaces, similar to the current
969 support for SystemMemory and SystemIO.
971 Debugger: Added new command to read/write/compare all namespace objects.
972 The command "test objects" will exercise the entire namespace by writing
973 new values to each data object, and ensuring that the write was
974 successful. The original value is then restored and verified.
976 Debugger: Added the "test predefined" command. This change makes this
977 test public and puts it under the new "test" command. The test executes
978 each and every predefined name within the current namespace.
980 ----------------------------------------
981 18 December 2013. Summary of changes for version 20131218:
983 Global note: The ACPI 5.0A specification was released this month. There
984 are no changes needed for ACPICA since this release of ACPI is an
985 errata/clarification release. The specification is available at
989 1) ACPICA kernel-resident subsystem:
991 Added validation of the XSDT root table if it is present. Some older
992 platforms contain an XSDT that is ill-formed or otherwise invalid (such
993 as containing some or all entries that are NULL pointers). This change
994 adds a new function to validate the XSDT before actually using it. If the
995 XSDT is found to be invalid, ACPICA will now automatically fall back to
996 using the RSDT instead. Original implementation by Zhao Yakui. Ported to
997 ACPICA and enhanced by Lv Zheng and Bob Moore.
999 Added a runtime option to ignore the XSDT and force the use of the RSDT.
1000 This change adds a runtime option that will force ACPICA to use the RSDT
1001 instead of the XSDT (AcpiGbl_DoNotUseXsdt). Although the ACPI spec
1002 requires that an XSDT be used instead of the RSDT, the XSDT has been
1003 found to be corrupt or ill-formed on some machines. Lv Zheng.
1005 Added a runtime option to favor 32-bit FADT register addresses over the
1006 64-bit addresses. This change adds an option to favor 32-bit FADT
1007 addresses when there is a conflict between the 32-bit and 64-bit versions
1008 of the same register. The default behavior is to use the 64-bit version
1009 in accordance with the ACPI specification. This can now be overridden via
1010 the AcpiGbl_Use32BitFadtAddresses flag. ACPICA BZ 885. Lv Zheng.
1012 During the change above, the internal "Convert FADT" and "Verify FADT"
1013 functions have been merged to simplify the code, making it easier to
1014 understand and maintain. ACPICA BZ 933.
1016 Improve exception reporting and handling for GPE block installation.
1017 Return an actual status from AcpiEvGetGpeXruptBlock and don't clobber the
1018 status when exiting AcpiEvInstallGpeBlock. ACPICA BZ 1019.
1020 Added helper macros to extract bus/segment numbers from the HEST table.
1021 This change adds two macros to extract the encoded bus and segment
1022 numbers from the HEST Bus field - ACPI_HEST_BUS and ACPI_HEST_SEGMENT.
1023 Betty Dall <betty.dall@hp.com>
1025 Removed the unused ACPI_FREE_BUFFER macro. This macro is no longer used
1026 by ACPICA. It is not a public macro, so it should have no effect on
1027 existing OSV code. Lv Zheng.
1029 Example Code and Data Size: These are the sizes for the OS-independent
1030 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1031 debug version of the code includes the debug output trace mechanism and
1032 has a much larger code and data size.
1035 Non-Debug Version: 96.1K Code, 27.0K Data, 123.1K Total
1036 Debug Version: 185.6K Code, 77.3K Data, 262.9K Total
1038 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
1039 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
1042 2) iASL Compiler/Disassembler and Tools:
1044 Disassembler: Improved pathname support for emitted External()
1045 statements. This change adds full pathname support for external names
1046 that have been resolved internally by the inclusion of additional ACPI
1047 tables (via the iASL -e option). Without this change, the disassembler
1048 can emit multiple externals for the same object, or it become confused
1049 when the Scope() operator is used on an external object. Overall, greatly
1050 improves the ability to actually recompile the emitted ASL code when
1051 objects a referenced across multiple ACPI tables. Reported by Michael
1052 Tsirkin (mst@redhat.com).
1054 Tests/ASLTS: Updated functional control suite to execute with no errors.
1055 David Box. Fixed several errors related to the testing of the interpreter
1056 slack mode. Lv Zheng.
1058 iASL: Added support to detect names that are declared within a control
1059 method, but are unused (these are temporary names that are only valid
1060 during the time the method is executing). A remark is issued for these
1061 cases. ACPICA BZ 1022.
1063 iASL: Added full support for the DBG2 table. Adds full disassembler,
1064 table compiler, and template generator support for the DBG2 table (Debug
1067 iASL: Added full support for the PCCT table, update the table definition.
1068 Updates the PCCT table definition in the actbl3.h header and adds table
1069 compiler and template generator support.
1071 iASL: Added an option to emit only error messages (no warnings/remarks).
1072 The -ve option will enable only error messages, warnings and remarks are
1073 suppressed. This can simplify debugging when only the errors are
1074 important, such as when an ACPI table is disassembled and there are many
1075 warnings and remarks -- but only the actual errors are of real interest.
1077 Example ACPICA code (source/tools/examples): Updated the example code so
1078 that it builds to an actual working program, not just example code. Added
1079 ACPI tables and execution of an example control method in the DSDT. Added
1080 makefile support for Unix generation.
1082 ----------------------------------------
1083 15 November 2013. Summary of changes for version 20131115:
1085 This release is available at https://acpica.org/downloads
1088 1) ACPICA kernel-resident subsystem:
1090 Resource Manager: Fixed loop termination for the "get AML length"
1091 function. The loop previously had an error termination on a NULL resource
1092 pointer, which can never happen since the loop simply increments a valid
1093 resource pointer. This fix changes the loop to terminate with an error on
1094 an invalid end-of-buffer condition. The problem can be seen as an
1095 infinite loop by callers to AcpiSetCurrentResources with an invalid or
1096 corrupted resource descriptor, or a resource descriptor that is missing
1097 an END_TAG descriptor. Reported by Dan Carpenter
1098 <dan.carpenter@oracle.com>. Lv Zheng, Bob Moore.
1100 Table unload and ACPICA termination: Delete all attached data objects
1101 during namespace node deletion. This fix updates namespace node deletion
1102 to delete the entire list of attached objects (attached via
1103 AcpiAttachObject) instead of just one of the attached items. ACPICA BZ
1104 1024. Tomasz Nowicki (tomasz.nowicki@linaro.org).
1106 ACPICA termination: Added support to delete all objects attached to the
1107 root namespace node. This fix deletes any and all objects that have been
1108 attached to the root node via AcpiAttachData. Previously, none of these
1109 objects were deleted. Reported by Tomasz Nowicki. ACPICA BZ 1026.
1111 Debug output: Do not emit the function nesting level for the in-kernel
1112 build. The nesting level is really only useful during a single-thread
1113 execution. Therefore, only enable this output for the AcpiExec utility.
1114 Also, only emit the thread ID when executing under AcpiExec (Context
1115 switches are still always detected and a message is emitted). ACPICA BZ
1118 Example Code and Data Size: These are the sizes for the OS-independent
1119 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1120 debug version of the code includes the debug output trace mechanism and
1121 has a much larger code and data size.
1124 Non-Debug Version: 95.9K Code, 27.0K Data, 122.9K Total
1125 Debug Version: 185.1K Code, 77.2K Data, 262.3K Total
1127 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
1128 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
1131 2) iASL Compiler/Disassembler and Tools:
1133 AcpiExec/Unix-OSL: Use <termios.h> instead of <termio.h>. This is the
1134 correct portable POSIX header for terminal control functions.
1136 Disassembler: Fixed control method invocation issues related to the use
1137 of the CondRefOf() operator. The problem is seen in the disassembly where
1138 control method invocations may not be disassembled properly if the
1139 control method name has been used previously as an argument to CondRefOf.
1140 The solution is to not attempt to emit an external declaration for the
1141 CondRefOf target (it is not necessary in the first place). This prevents
1142 disassembler object type confusion. ACPICA BZ 988.
1144 Unix Makefiles: Added an option to disable compiler optimizations and the
1145 _FORTIFY_SOURCE flag. Some older compilers have problems compiling ACPICA
1146 with optimizations (reportedly, gcc 4.4 for example). This change adds a
1147 command line option for make (NOOPT) that disables all compiler
1148 optimizations and the _FORTIFY_SOURCE compiler flag. The default
1149 optimization is -O2 with the _FORTIFY_SOURCE flag specified. ACPICA BZ
1150 1034. Lv Zheng, Bob Moore.
1152 Tests/ASLTS: Added options to specify individual test cases and modes.
1153 This allows testers running aslts.sh to optionally specify individual
1154 test modes and test cases. Also added an option to disable the forced
1155 generation of the ACPICA tools from source if desired. Lv Zheng.
1157 ----------------------------------------
1158 27 September 2013. Summary of changes for version 20130927:
1160 This release is available at https://acpica.org/downloads
1163 1) ACPICA kernel-resident subsystem:
1165 Fixed a problem with store operations to reference objects. This change
1166 fixes a problem where a Store operation to an ArgX object that contained
1168 reference to a field object did not complete the automatic dereference
1170 then write to the actual field object. Instead, the object type of the
1171 field object was inadvertently changed to match the type of the source
1172 operand. The new behavior will actually write to the field object (buffer
1173 field or field unit), thus matching the correct ACPI-defined behavior.
1175 Implemented support to allow the host to redefine individual OSL
1176 prototypes. This change enables the host to redefine OSL prototypes found
1177 in the acpiosxf.h file. This allows the host to implement OSL interfaces
1178 with a macro or inlined function. Further, it allows the host to add any
1179 additional required modifiers such as __iomem, __init, __exit, etc., as
1180 necessary on a per-interface basis. Enables maximum flexibility for the
1181 OSL interfaces. Lv Zheng.
1183 Hardcoded the access width for the FADT-defined reset register. The ACPI
1184 specification requires the reset register width to be 8 bits. ACPICA now
1185 hardcodes the width to 8 and ignores the FADT width value. This provides
1186 compatibility with other ACPI implementations that have allowed BIOS code
1187 with bad register width values to go unnoticed. Matthew Garett, Bob
1191 Changed the position/use of the ACPI_PRINTF_LIKE macro. This macro is
1193 in the OSL header (acpiosxf). The change modifies the position of this
1194 macro in each instance where it is used (AcpiDebugPrint, etc.) to avoid
1195 build issues if the OSL defines the implementation of the interface to be
1196 an inline stub function. Lv Zheng.
1198 Deployed a new macro ACPI_EXPORT_SYMBOL_INIT for the main ACPICA
1199 initialization interfaces. This change adds a new macro for the main init
1200 and terminate external interfaces in order to support hosts that require
1201 additional or different processing for these functions. Changed from
1202 ACPI_EXPORT_SYMBOL to ACPI_EXPORT_SYMBOL_INIT for these functions. Lv
1205 Cleaned up the memory allocation macros for configurability. In the
1207 case, the ACPI_ALLOCATE and related macros now resolve directly to their
1208 respective AcpiOs* OSL interfaces. Two options:
1209 1) The ACPI_ALLOCATE_ZEROED macro uses a simple local implementation by
1210 default, unless overridden by the USE_NATIVE_ALLOCATE_ZEROED define.
1211 2) For AcpiExec (and for debugging), the macros can optionally be
1213 to the local ACPICA interfaces that track each allocation (local tracking
1214 is used to immediately detect memory leaks).
1217 Simplified the configuration for ACPI_REDUCED_HARDWARE. Allows the kernel
1218 to predefine this macro to either TRUE or FALSE during the system build.
1220 Replaced __FUNCTION_ with __func__ in the gcc-specific header.
1222 Example Code and Data Size: These are the sizes for the OS-independent
1223 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1224 debug version of the code includes the debug output trace mechanism and
1225 has a much larger code and data size.
1228 Non-Debug Version: 95.8K Code, 27.0K Data, 122.8K Total
1229 Debug Version: 185.2K Code, 77.2K Data, 262.4K Total
1231 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
1232 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
1235 2) iASL Compiler/Disassembler and Tools:
1237 iASL: Implemented wildcard support for the -e option. This simplifies use
1238 when there are many SSDTs that must be included to resolve external
1240 declarations. ACPICA BZ 1041. Example:
1241 iasl -e ssdt*.dat -d dsdt.dat
1243 AcpiExec: Add history/line-editing for Unix/Linux systems. This change
1244 adds a portable module that implements full history and limited line
1245 editing for Unix and Linux systems. It does not use readline() due to
1246 portability issues. Instead it uses the POSIX termio interface to put the
1247 terminal in raw input mode so that the various special keys can be
1249 (such as up/down-arrow for history support and left/right-arrow for line
1250 editing). Uses the existing debugger history mechanism. ACPICA BZ 1036.
1252 AcpiXtract: Add support to handle (ignore) "empty" lines containing only
1253 one or more spaces. This provides compatible with early or different
1254 versions of the AcpiDump utility. ACPICA BZ 1044.
1256 AcpiDump: Do not ignore tables that contain only an ACPI table header.
1257 Apparently, some BIOSs create SSDTs that contain an ACPI table header but
1258 no other data. This change adds support to dump these tables. Any tables
1259 shorter than the length of an ACPI table header remain in error (an error
1260 message is emitted). Reported by Yi Li.
1262 Debugger: Echo actual command along with the "unknown command" message.
1264 ----------------------------------------
1265 23 August 2013. Summary of changes for version 20130823:
1267 1) ACPICA kernel-resident subsystem:
1269 Implemented support for host-installed System Control Interrupt (SCI)
1270 handlers. Certain ACPI functionality requires the host to handle raw
1271 SCIs. For example, the "SCI Doorbell" that is defined for memory power
1272 state support requires the host device driver to handle SCIs to examine
1273 if the doorbell has been activated. Multiple SCI handlers can be
1274 installed to allow for future expansion. New external interfaces are
1275 AcpiInstallSciHandler, AcpiRemoveSciHandler; see the ACPICA reference for
1276 details. Lv Zheng, Bob Moore. ACPICA BZ 1032.
1278 Operation region support: Never locally free the handler "context"
1279 pointer. This change removes some dangerous code that attempts to free
1280 the handler context pointer in some (rare) circumstances. The owner of
1281 the handler owns this pointer and the ACPICA code should never touch it.
1282 Although not seen to be an issue in any kernel, it did show up as a
1283 problem (fault) under AcpiExec. Also, set the internal storage field for
1284 the context pointer to zero when the region is deactivated, simply for
1285 sanity. David Box. ACPICA BZ 1039.
1287 AcpiRead: On error, do not modify the return value target location. If an
1288 error happens in the middle of a split 32/32 64-bit I/O operation, do not
1289 modify the target of the return value pointer. Makes the code consistent
1290 with the rest of ACPICA. Bjorn Helgaas.
1292 Example Code and Data Size: These are the sizes for the OS-independent
1293 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1294 debug version of the code includes the debug output trace mechanism and
1295 has a much larger code and data size.
1298 Non-Debug Version: 96.7K Code, 27.1K Data, 123.9K Total
1299 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
1301 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
1302 Debug Version: 185.4K Code, 77.1K Data, 262.5K Total
1305 2) iASL Compiler/Disassembler and Tools:
1307 AcpiDump: Implemented several new features and fixed some problems:
1308 1) Added support to dump the RSDP, RSDT, and XSDT tables.
1309 2) Added support for multiple table instances (SSDT, UEFI).
1310 3) Added option to dump "customized" (overridden) tables (-c).
1311 4) Fixed a problem where some table filenames were improperly
1313 5) Improved some error messages, removed some unnecessary messages.
1315 iASL: Implemented additional support for disassembly of ACPI tables that
1316 contain invocations of external control methods. The -fe<file> option
1317 allows the import of a file that specifies the external methods along
1318 with the required number of arguments for each -- allowing for the
1319 correct disassembly of the table. This is a workaround for a limitation
1320 of AML code where the disassembler often cannot determine the number of
1321 arguments required for an external control method and generates incorrect
1322 ASL code. See the iASL reference for details. ACPICA BZ 1030.
1324 Debugger: Implemented a new command (paths) that displays the full
1325 pathnames (namepaths) and object types of all objects in the namespace.
1326 This is an alternative to the namespace command.
1328 Debugger: Implemented a new command (sci) that invokes the SCI dispatch
1329 mechanism and any installed handlers.
1331 iASL: Fixed a possible segfault for "too many parent prefixes" condition.
1332 This can occur if there are too many parent prefixes in a namepath (for
1333 example, ^^^^^^PCI0.ECRD). ACPICA BZ 1035.
1335 Application OSLs: Set the return value for the PCI read functions. These
1336 functions simply return AE_OK, but should set the return value to zero
1337 also. This change implements this. ACPICA BZ 1038.
1339 Debugger: Prevent possible command line buffer overflow. Increase the
1340 size of a couple of the debugger line buffers, and ensure that overflow
1341 cannot happen. ACPICA BZ 1037.
1343 iASL: Changed to abort immediately on serious errors during the parsing
1344 phase. Due to the nature of ASL, there is no point in attempting to
1345 compile these types of errors, and they typically end up causing a
1346 cascade of hundreds of errors which obscure the original problem.
1348 ----------------------------------------
1349 25 July 2013. Summary of changes for version 20130725:
1351 1) ACPICA kernel-resident subsystem:
1353 Fixed a problem with the DerefOf operator where references to FieldUnits
1354 and BufferFields incorrectly returned the parent object, not the actual
1355 value of the object. After this change, a dereference of a FieldUnit
1356 reference results in a read operation on the field to get the value, and
1357 likewise, the appropriate BufferField value is extracted from the target
1360 Fixed a problem where the _WAK method could cause a fault under these
1361 circumstances: 1) Interpreter slack mode was not enabled, and 2) the _WAK
1362 method returned no value. The problem is rarely seen because most kernels
1363 run ACPICA in slack mode.
1365 For the DerefOf operator, a fatal error now results if an attempt is made
1366 to dereference a reference (created by the Index operator) to a NULL
1367 package element. Provides compatibility with other ACPI implementations,
1368 and this behavior will be added to a future version of the ACPI
1371 The ACPI Power Management Timer (defined in the FADT) is now optional.
1372 This provides compatibility with other ACPI implementations and will
1373 appear in the next version of the ACPI specification. If there is no PM
1374 Timer on the platform, AcpiGetTimer returns AE_SUPPORT. An address of
1375 zero in the FADT indicates no PM timer.
1377 Implemented a new interface for _OSI support, AcpiUpdateInterfaces. This
1378 allows the host to globally enable/disable all vendor strings, all
1379 feature strings, or both. Intended to be primarily used for debugging
1380 purposes only. Lv Zheng.
1382 Expose the collected _OSI data to the host via a global variable. This
1383 data tracks the highest level vendor ID that has been invoked by the BIOS
1384 so that the host (and potentially ACPICA itself) can change behaviors
1385 based upon the age of the BIOS.
1387 Example Code and Data Size: These are the sizes for the OS-independent
1388 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1389 debug version of the code includes the debug output trace mechanism and
1390 has a much larger code and data size.
1393 Non-Debug Version: 96.2K Code, 27.1K Data, 123.3K Total
1394 Debug Version: 184.4K Code, 76.8K Data, 261.2K Total
1396 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
1397 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
1400 2) iASL Compiler/Disassembler and Tools:
1402 iASL: Created the following enhancements for the -so option (create
1404 1)Add offsets for the last nameseg in each namepath for every supported
1406 2)Add support for Processor, Device, Thermal Zone, and Scope objects
1407 3)Add the actual AML opcode for the parent object of every supported
1409 4)Add support for the ZERO/ONE/ONES AML opcodes for integer objects
1411 Disassembler: Emit all unresolved external symbols in a single block.
1412 These are external references to control methods that could not be
1413 resolved, and thus, the disassembler had to make a guess at the number of
1416 iASL: The argument to the -T option (create table template) is now
1417 optional. If not specified, the default table is a DSDT, typically the
1420 ----------------------------------------
1421 26 June 2013. Summary of changes for version 20130626:
1423 1) ACPICA kernel-resident subsystem:
1425 Fixed an issue with runtime repair of the _CST object. Null or invalid
1426 elements were not always removed properly. Lv Zheng.
1428 Removed an arbitrary restriction of 256 GPEs per GPE block (such as the
1429 FADT-defined GPE0 and GPE1). For GPE0, GPE1, and each GPE Block Device,
1430 the maximum number of GPEs is 1016. Use of multiple GPE block devices
1431 makes the system-wide number of GPEs essentially unlimited.
1433 Example Code and Data Size: These are the sizes for the OS-independent
1434 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1435 debug version of the code includes the debug output trace mechanism and
1436 has a much larger code and data size.
1439 Non-Debug Version: 95.9K Code, 26.9K Data, 122.8K Total
1440 Debug Version: 184.1K Code, 76.7K Data, 260.8K Total
1442 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
1443 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
1446 2) iASL Compiler/Disassembler and Tools:
1448 Portable AcpiDump: Implemented full support for the Linux and FreeBSD
1449 hosts. Now supports Linux, FreeBSD, and Windows.
1451 Disassembler: Added some missing types for the HEST and EINJ tables: "Set
1452 Error Type With Address", "CMCI", "MCE", and "Flush Cacheline".
1454 iASL/Preprocessor: Implemented full support for nested
1455 #if/#else/#elif/#endif blocks. Allows arbitrary depth of nested blocks.
1457 Disassembler: Expanded maximum output string length to 64K. Was 256 bytes
1458 max. The original purpose of this constraint was to limit the amount of
1459 debug output. However, the string function in question (UtPrintString) is
1460 now used for the disassembler also, where 256 bytes is insufficient.
1461 Reported by RehabMan@GitHub.
1463 iASL/DataTables: Fixed some problems and issues with compilation of DMAR
1464 tables. ACPICA BZ 999. Lv Zheng.
1466 iASL: Fixed a couple of error exit issues that could result in a "Could
1467 not delete <file>" message during ASL compilation.
1469 AcpiDump: Allow "FADT" and "MADT" as valid table signatures, even though
1470 the actual signatures for these tables are "FACP" and "APIC",
1473 AcpiDump: Added support for multiple UEFI tables. Only SSDT and UEFI
1474 tables are allowed to have multiple instances.
1476 ----------------------------------------
1477 17 May 2013. Summary of changes for version 20130517:
1479 1) ACPICA kernel-resident subsystem:
1481 Fixed a regression introduced in version 20130328 for _INI methods. This
1482 change fixes a problem introduced in 20130328 where _INI methods are no
1483 longer executed properly because of a memory block that was not
1484 initialized correctly. ACPICA BZ 1016. Tomasz Nowicki
1485 <tomasz.nowicki@linaro.org>.
1487 Fixed a possible problem with the new extended sleep registers in the
1489 5.0 FADT. Do not use these registers (even if populated) unless the HW-
1490 reduced bit is set in the FADT (as per the ACPI specification). ACPICA BZ
1493 Implemented return value repair code for _CST predefined objects: Sort
1495 list and detect/remove invalid entries. ACPICA BZ 890. Lv Zheng.
1497 Implemented a debug-only option to disable loading of SSDTs from the
1498 RSDT/XSDT during ACPICA initialization. This can be useful for debugging
1499 ACPI problems on some machines. Set AcpiGbl_DisableSsdtTableLoad in
1500 acglobal.h - ACPICA BZ 1005. Lv Zheng.
1502 Fixed some issues in the ACPICA initialization and termination code:
1503 Tomasz Nowicki <tomasz.nowicki@linaro.org>
1504 1) Clear events initialized flag upon event component termination. ACPICA
1506 2) Fixed a possible memory leak in GPE init error path. ACPICA BZ 1018.
1507 3) Delete global lock pending lock during termination. ACPICA BZ 1012.
1508 4) Clear debug buffer global on termination to prevent possible multiple
1509 delete. ACPICA BZ 1010.
1511 Standardized all switch() blocks across the entire source base. After
1513 years, different formatting for switch() had crept in. This change makes
1514 the formatting of every switch block identical. ACPICA BZ 997. Chao Guan.
1516 Split some files to enhance ACPICA modularity and configurability:
1517 1) Split buffer dump routines into utilities/utbuffer.c
1518 2) Split internal error message routines into utilities/uterror.c
1519 3) Split table print utilities into tables/tbprint.c
1520 4) Split iASL command-line option processing into asloptions.c
1522 Makefile enhancements:
1523 1) Support for all new files above.
1524 2) Abort make on errors from any subcomponent. Chao Guan.
1525 3) Add build support for Apple Mac OS X. Liang Qi.
1527 Example Code and Data Size: These are the sizes for the OS-independent
1528 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1529 debug version of the code includes the debug output trace mechanism and
1530 has a much larger code and data size.
1533 Non-Debug Version: 96.0K Code, 27.0K Data, 123.0K Total
1534 Debug Version: 184.1K Code, 76.8K Data, 260.9K Total
1536 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
1537 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
1540 2) iASL Compiler/Disassembler and Tools:
1542 New utility: Implemented an easily portable version of the acpidump
1543 utility to extract ACPI tables from the system (or a file) in an ASCII
1545 dump format. The top-level code implements the various command line
1546 options, file I/O, and table dump routines. To port to a new host, only
1547 three functions need to be implemented to get tables -- since this
1548 functionality is OS-dependent. See the tools/acpidump/apmain.c module and
1549 the ACPICA reference for porting instructions. ACPICA BZ 859. Notes:
1550 1) The Windows version obtains the ACPI tables from the Registry.
1551 2) The Linux version is under development.
1552 3) Other hosts - If an OS-dependent module is submitted, it will be
1553 distributed with ACPICA.
1555 iASL: Fixed a regression for -D preprocessor option (define symbol). A
1556 restructuring/change to the initialization sequence caused this option to
1557 no longer work properly.
1559 iASL: Implemented a mechanism to disable specific warnings and remarks.
1560 Adds a new command line option, "-vw <messageid> as well as "#pragma
1561 disable <messageid>". ACPICA BZ 989. Chao Guan, Bob Moore.
1563 iASL: Fix for too-strict package object validation. The package object
1564 validation for return values from the predefined names is a bit too
1565 strict, it does not allow names references within the package (which will
1566 be resolved at runtime.) These types of references cannot be validated at
1567 compile time. This change ignores named references within package objects
1568 for names that return or define static packages.
1570 Debugger: Fixed the 80-character command line limitation for the History
1571 command. Now allows lines of arbitrary length. ACPICA BZ 1000. Chao Guan.
1573 iASL: Added control method and package support for the -so option
1574 (generates AML offset table for BIOS support.)
1576 iASL: issue a remark if a non-serialized method creates named objects. If
1577 a thread blocks within the method for any reason, and another thread
1578 enters the method, the method will fail because an attempt will be made
1580 create the same (named) object twice. In this case, issue a remark that
1581 the method should be marked serialized. NOTE: may become a warning later.
1584 ----------------------------------------
1585 18 April 2013. Summary of changes for version 20130418:
1587 1) ACPICA kernel-resident subsystem:
1589 Fixed a possible buffer overrun during some rare but specific field unit
1590 read operations. This overrun can only happen if the DSDT version is 1 --
1591 meaning that all AML integers are 32 bits -- and the field length is
1592 between 33 and 55 bits long. During the read, an internal buffer object
1594 created for the field unit because the field is larger than an integer
1596 bits). However, in this case, the buffer will be incorrectly written
1597 beyond the end because the buffer length is less than the internal
1599 of 64 bits (8 bytes) long. The buffer will be either 5, 6, or 7 bytes
1600 long, but a full 8 bytes will be written.
1602 Updated the Embedded Controller "orphan" _REG method support. This refers
1603 to _REG methods under the EC device that have no corresponding operation
1604 region. This is allowed by the ACPI specification. This update removes a
1605 dependency on the existence an ECDT table. It will execute an orphan _REG
1606 method as long as the operation region handler for the EC is installed at
1607 the EC device node and not the namespace root. Rui Zhang (original
1608 update), Bob Moore (update/integrate).
1610 Implemented run-time argument typechecking for all predefined ACPI names
1611 (_STA, _BIF, etc.) This change performs object typechecking on all
1612 incoming arguments for all predefined names executed via
1613 AcpiEvaluateObject. This ensures that ACPI-related device drivers are
1614 passing correct object types as well as the correct number of arguments
1615 (therefore identifying any issues immediately). Also, the ASL/namespace
1616 definition of the predefined name is checked against the ACPI
1617 specification for the proper argument count. Adds one new file,
1620 Changed an exception code for the ASL UnLoad() operator. Changed the
1621 exception code for the case where the input DdbHandle is invalid, from
1622 AE_BAD_PARAMETER to the more appropriate AE_AML_OPERAND_TYPE.
1624 Unix/Linux makefiles: Removed the use of the -O2 optimization flag in the
1625 global makefile. The use of this flag causes compiler errors on earlier
1626 versions of GCC, so it has been removed for compatibility.
1628 Miscellaneous cleanup:
1629 1) Removed some unused/obsolete macros
1630 2) Fixed a possible memory leak in the _OSI support
1631 3) Removed an unused variable in the predefined name support
1632 4) Windows OSL: remove obsolete reference to a memory list field
1634 Example Code and Data Size: These are the sizes for the OS-independent
1635 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1636 debug version of the code includes the debug output trace mechanism and
1637 has a much larger code and data size.
1640 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
1641 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
1643 Non-Debug Version: 95.6K Code, 26.8K Data, 122.4K Total
1644 Debug Version: 183.5K Code, 76.6K Data, 260.1K Total
1647 2) iASL Compiler/Disassembler and Tools:
1649 AcpiExec: Added installation of a handler for the SystemCMOS address
1650 space. This prevents control method abort if a method accesses this
1653 AcpiExec: Added support for multiple EC devices, and now install EC
1654 operation region handler(s) at the actual EC device instead of the
1655 namespace root. This reflects the typical behavior of host operating
1658 AcpiExec: Updated to ensure that all operation region handlers are
1659 installed before the _REG methods are executed. This prevents a _REG
1660 method from aborting if it accesses an address space has no handler.
1661 AcpiExec installs a handler for every possible address space.
1663 Debugger: Enhanced the "handlers" command to display non-root handlers.
1664 This change enhances the handlers command to display handlers associated
1665 with individual devices throughout the namespace, in addition to the
1666 currently supported display of handlers associated with the root
1670 ASL Test Suite: Several test suite errors have been identified and
1671 resolved, reducing the total error count during execution. Chao Guan.
1673 ----------------------------------------
1674 28 March 2013. Summary of changes for version 20130328:
1676 1) ACPICA kernel-resident subsystem:
1678 Fixed several possible race conditions with the internal object reference
1679 counting mechanism. Some of the external ACPICA interfaces update object
1680 reference counts without holding the interpreter or namespace lock. This
1681 change adds a spinlock to protect reference count updates on the internal
1682 ACPICA objects. Reported by and with assistance from Andriy Gapon
1685 FADT support: Removed an extraneous warning for very large GPE register
1686 sets. This change removes a size mismatch warning if the legacy length
1687 field for a GPE register set is larger than the 64-bit GAS structure can
1688 accommodate. GPE register sets can be larger than the 255-bit width
1689 limitation of the GAS structure. Linn Crosetto (linn@hp.com).
1691 _OSI Support: handle any errors from AcpiOsAcquireMutex. Check for error
1692 return from this interface. Handles a possible timeout case if
1693 ACPI_WAIT_FOREVER is modified by the host to be a value less than
1694 "forever". Jung-uk Kim.
1696 Predefined name support: Add allowed/required argument type information
1698 the master predefined info table. This change adds the infrastructure to
1699 enable typechecking on incoming arguments for all predefined
1700 methods/objects. It does not actually contain the code that will fully
1701 utilize this information, this is still under development. Also condenses
1702 some duplicate code for the predefined names into a new module,
1703 utilities/utpredef.c
1705 Example Code and Data Size: These are the sizes for the OS-independent
1706 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1707 debug version of the code includes the debug output trace mechanism and
1708 has a much larger code and data size.
1711 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
1712 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
1714 Non-Debug Version: 95.2K Code, 26.4K Data, 121.6K Total
1715 Debug Version: 183.0K Code, 76.0K Data, 259.0K Total
1718 2) iASL Compiler/Disassembler and Tools:
1720 iASL: Implemented a new option to simplify the development of ACPI-
1722 BIOS code. Adds support for a new "offset table" output file. The -so
1723 option will create a C table containing the AML table offsets of various
1724 named objects in the namespace so that BIOS code can modify them easily
1726 boot time. This can simplify BIOS runtime code by eliminating expensive
1727 searches for "magic values", enhancing boot times and adding greater
1728 reliability. With assistance from Lee Hamel.
1730 iASL: Allow additional predefined names to return zero-length packages.
1731 Now, all predefined names that are defined by the ACPI specification to
1732 return a "variable-length package of packages" are allowed to return a
1733 zero length top-level package. This allows the BIOS to tell the host that
1734 the requested feature is not supported, and supports existing BIOS/ASL
1737 iASL: Changed the "result not used" warning to an error. This is the case
1738 where an ASL operator is effectively a NOOP because the result of the
1739 operation is not stored anywhere. For example:
1741 There is no target (missing 3rd argument), nor is the function return
1742 value used. This is potentially a very serious problem -- since the code
1743 was probably intended to do something, but for whatever reason, the value
1744 was not stored. Therefore, this issue has been upgraded from a warning to
1747 AcpiHelp: Added allowable/required argument types to the predefined names
1748 info display. This feature utilizes the recent update to the predefined
1749 names table (above).
1751 ----------------------------------------
1752 14 February 2013. Summary of changes for version 20130214:
1754 1) ACPICA Kernel-resident Subsystem:
1756 Fixed a possible regression on some hosts: Reinstated the safe return
1757 macros (return_ACPI_STATUS, etc.) that ensure that the argument is
1758 evaluated only once. Although these macros are not needed for the ACPICA
1759 code itself, they are often used by ACPI-related host device drivers
1761 the safe feature may be necessary.
1763 Fixed several issues related to the ACPI 5.0 reduced hardware support
1764 (SOC): Now ensure that if the platform declares itself as hardware-
1766 via the FADT, the following functions become NOOPs (and always return
1767 AE_OK) because ACPI is always enabled by definition on these machines:
1773 Dynamic Object Repair: Implemented additional runtime repairs for
1774 predefined name return values. Both of these repairs can simplify code in
1775 the related device drivers that invoke these methods:
1776 1) For the _STR and _MLS names, automatically repair/convert an ASCII
1777 string to a Unicode buffer.
1778 2) For the _CRS, _PRS, and _DMA names, return a resource descriptor with
1780 lone end tag descriptor in the following cases: A Return(0) was executed,
1781 a null buffer was returned, or no object at all was returned (non-slack
1782 mode only). Adds a new file, nsconvert.c
1783 ACPICA BZ 998. Bob Moore, Lv Zheng.
1785 Resource Manager: Added additional code to prevent possible infinite
1787 while traversing corrupted or ill-formed resource template buffers. Check
1788 for zero-length resource descriptors in all code that loops through
1789 resource templates (the length field is used to index through the
1790 template). This change also hardens the external AcpiWalkResources and
1791 AcpiWalkResourceBuffer interfaces.
1793 Local Cache Manager: Enhanced the main data structure to eliminate an
1794 unnecessary mechanism to access the next object in the list. Actually
1795 provides a small performance enhancement for hosts that use the local
1796 ACPICA cache manager. Jung-uk Kim.
1798 Example Code and Data Size: These are the sizes for the OS-independent
1799 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1800 debug version of the code includes the debug output trace mechanism and
1801 has a much larger code and data size.
1804 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
1805 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
1807 Non-Debug Version: 95.0K Code, 25.9K Data, 120.9K Total
1808 Debug Version: 182.9K Code, 75.6K Data, 258.5K Total
1811 2) iASL Compiler/Disassembler and Tools:
1813 iASL/Disassembler: Fixed several issues with the definition of the ACPI
1814 5.0 RASF table (RAS Feature Table). This change incorporates late changes
1815 that were made to the ACPI 5.0 specification.
1817 iASL/Disassembler: Added full support for the following new ACPI tables:
1818 1) The MTMR table (MID Timer Table)
1819 2) The VRTC table (Virtual Real Time Clock Table).
1820 Includes header file, disassembler, table compiler, and template support
1823 iASL: Implemented compile-time validation of package objects returned by
1824 predefined names. This new feature validates static package objects
1825 returned by the various predefined names defined to return packages. Both
1826 object types and package lengths are validated, for both parent packages
1827 and sub-packages, if any. The code is similar in structure and behavior
1829 the runtime repair mechanism within the AML interpreter and uses the
1830 existing predefined name information table. Adds a new file, aslprepkg.c.
1833 iASL: Implemented auto-detection of binary ACPI tables for disassembly.
1834 This feature detects a binary file with a valid ACPI table header and
1835 invokes the disassembler automatically. Eliminates the need to
1836 specifically invoke the disassembler with the -d option. ACPICA BZ 862.
1838 iASL/Disassembler: Added several warnings for the case where there are
1839 unresolved control methods during the disassembly. This can potentially
1840 cause errors when the output file is compiled, because the disassembler
1841 assumes zero method arguments in these cases (it cannot determine the
1842 actual number of arguments without resolution/definition of the method).
1844 Debugger: Added support to display all resources with a single command.
1845 Invocation of the resources command with no arguments will now display
1847 resources within the current namespace.
1849 AcpiHelp: Added descriptive text for each ACPICA exception code displayed
1852 ----------------------------------------
1853 17 January 2013. Summary of changes for version 20130117:
1855 1) ACPICA Kernel-resident Subsystem:
1857 Updated the AcpiGetSleepTypeData interface: Allow the \_Sx methods to
1858 return either 1 or 2 integers. Although the ACPI spec defines the \_Sx
1859 objects to return a package containing one integer, most BIOS code
1861 two integers and the previous code reflects that. However, we also need
1863 support BIOS code that actually implements to the ACPI spec, and this
1864 change reflects this.
1866 Fixed two issues with the ACPI_DEBUG_PRINT macros:
1867 1) Added the ACPI_DO_WHILE macro to the main DEBUG_PRINT helper macro for
1868 C compilers that require this support.
1869 2) Renamed the internal ACPI_DEBUG macro to ACPI_DO_DEBUG_PRINT since
1870 ACPI_DEBUG is already used by many of the various hosts.
1872 Updated all ACPICA copyrights and signons to 2013. Added the 2013
1873 copyright to all module headers and signons, including the standard Linux
1874 header. This affects virtually every file in the ACPICA core subsystem,
1875 iASL compiler, all ACPICA utilities, and the test suites.
1877 Example Code and Data Size: These are the sizes for the OS-independent
1878 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1879 debug version of the code includes the debug output trace mechanism and
1880 has a much larger code and data size.
1883 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
1884 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
1886 Non-Debug Version: 94.5K Code, 25.4K Data, 119.9K Total
1887 Debug Version: 182.3K Code, 75.0K Data, 257.3K Total
1890 2) iASL Compiler/Disassembler and Tools:
1892 Generic Unix OSL: Use a buffer to eliminate multiple vfprintf()s and
1893 prevent a possible fault on some hosts. Some C libraries modify the arg
1894 pointer parameter to vfprintf making it difficult to call it twice in the
1895 AcpiOsVprintf function. Use a local buffer to workaround this issue. This
1896 does not affect the Windows OSL since the Win C library does not modify
1897 the arg pointer. Chao Guan, Bob Moore.
1899 iASL: Fixed a possible infinite loop when the maximum error count is
1900 reached. If an output file other than the .AML file is specified (such as
1901 a listing file), and the maximum number of errors is reached, do not
1902 attempt to flush data to the output file(s) as the compiler is aborting.
1903 This can cause an infinite loop as the max error count code essentially
1904 keeps calling itself.
1906 iASL/Disassembler: Added an option (-in) to ignore NOOP
1908 Implemented for both the compiler and the disassembler. Often, the NOOP
1909 opcode is used as padding for packages that are changed dynamically by
1911 BIOS. When disassembled and recompiled, these NOOPs will cause syntax
1912 errors. This option causes the disassembler to ignore all NOOP opcodes
1913 (0xA3), and it also causes the compiler to ignore all ASL source code
1917 Debugger: Enhanced the Sleep command to execute all sleep states. This
1918 change allows Sleep to be invoked with no arguments and causes the
1919 debugger to execute all of the sleep states, 0-5, automatically.
1921 ----------------------------------------
1922 20 December 2012. Summary of changes for version 20121220:
1924 1) ACPICA Kernel-resident Subsystem:
1926 Implemented a new interface, AcpiWalkResourceBuffer. This interface is an
1927 alternate entry point for AcpiWalkResources and improves the usability of
1928 the resource manager by accepting as input a buffer containing the output
1929 of either a _CRS, _PRS, or _AEI method. The key functionality is that the
1930 input buffer is not deleted by this interface so that it can be used by
1931 the host later. See the ACPICA reference for details.
1933 Interpreter: Add a warning if a 64-bit constant appears in a 32-bit table
1934 (DSDT version < 2). The constant will be truncated and this warning
1935 reflects that behavior.
1937 Resource Manager: Add support for the new ACPI 5.0 wake bit in the IRQ,
1938 ExtendedInterrupt, and GpioInt descriptors. This change adds support to
1939 both get and set the new wake bit in these descriptors, separately from
1940 the existing share bit. Reported by Aaron Lu.
1942 Interpreter: Fix Store() when an implicit conversion is not possible. For
1943 example, in the cases such as a store of a string to an existing package
1944 object, implement the store as a CopyObject(). This is a small departure
1945 from the ACPI specification which states that the control method should
1947 aborted in this case. However, the ASLTS suite depends on this behavior.
1949 Performance improvement for the various FUNCTION_TRACE and DEBUG_PRINT
1950 macros: check if debug output is currently enabled as soon as possible to
1951 minimize performance impact if debug is in fact not enabled.
1953 Source code restructuring: Cleanup to improve modularity. The following
1954 new files have been added: dbconvert.c, evhandler.c, nsprepkg.c,
1955 psopinfo.c, psobject.c, rsdumpinfo.c, utstring.c, and utownerid.c.
1956 Associated makefiles and project files have been updated.
1958 Changed an exception code for LoadTable operator. For the case where one
1959 of the input strings is too long, change the returned exception code from
1960 AE_BAD_PARAMETER to AE_AML_STRING_LIMIT.
1962 Fixed a possible memory leak in dispatcher error path. On error, delete
1963 the mutex object created during method mutex creation. Reported by
1964 tim.gardner@canonical.com.
1966 Example Code and Data Size: These are the sizes for the OS-independent
1967 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
1968 debug version of the code includes the debug output trace mechanism and
1969 has a much larger code and data size.
1972 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
1973 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
1975 Non-Debug Version: 94.5K Code, 25.5K Data, 120.0K Total
1976 Debug Version: 182.2K Code, 74.9K Data, 257.1K Total
1979 2) iASL Compiler/Disassembler and Tools:
1981 iASL: Disallow a method call as argument to the ObjectType ASL operator.
1982 This change tracks an errata to the ACPI 5.0 document. The AML grammar
1983 will not allow the interpreter to differentiate between a method and a
1984 method invocation when these are used as an argument to the ObjectType
1985 operator. The ACPI specification change is to disallow a method
1987 (UserTerm) for the ObjectType operator.
1989 Finish support for the TPM2 and CSRT tables in the headers, table
1990 compiler, and disassembler.
1992 Unix user-space OSL: Fix a problem with WaitSemaphore where the timeout
1993 always expires immediately if the semaphore is not available. The
1995 code was using a relative-time timeout, but sem_timedwait requires the
1997 of an absolute time.
1999 iASL: Added a remark if the Timer() operator is used within a 32-bit
2000 table. This operator returns a 64-bit time value that will be truncated
2001 within a 32-bit table.
2003 iASL Source code restructuring: Cleanup to improve modularity. The
2004 following new files have been added: aslhex.c, aslxref.c, aslnamesp.c,
2005 aslmethod.c, and aslfileio.c. Associated makefiles and project files have
2009 ----------------------------------------
2010 14 November 2012. Summary of changes for version 20121114:
2012 1) ACPICA Kernel-resident Subsystem:
2014 Implemented a performance enhancement for ACPI/AML Package objects. This
2015 change greatly increases the performance of Package objects within the
2016 interpreter. It changes the processing of reference counts for packages
2018 optimizing for the most common case where the package sub-objects are
2019 either Integers, Strings, or Buffers. Increases the overall performance
2021 the ASLTS test suite by 1.5X (Increases the Slack Mode performance by
2023 Chao Guan. ACPICA BZ 943.
2025 Implemented and deployed common macros to extract flag bits from resource
2026 descriptors. Improves readability and maintainability of the code. Fixes
2028 problem with the UART serial bus descriptor for the number of data bits
2029 flags (was incorrectly 2 bits, should be 3).
2031 Enhanced the ACPI_GETx and ACPI_SETx macros. Improved the implementation
2032 of the macros and changed the SETx macros to the style of (destination,
2033 source). Also added ACPI_CASTx companion macros. Lv Zheng.
2035 Example Code and Data Size: These are the sizes for the OS-independent
2036 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2037 debug version of the code includes the debug output trace mechanism and
2038 has a much larger code and data size.
2041 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
2042 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
2044 Non-Debug Version: 94.3K Code, 25.3K Data, 119.6K Total
2045 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
2048 2) iASL Compiler/Disassembler and Tools:
2050 Disassembler: Added the new ACPI 5.0 interrupt sharing flags. This change
2051 adds the ShareAndWake and ExclusiveAndWake flags which were added to the
2052 Irq, Interrupt, and Gpio resource descriptors in ACPI 5.0. ACPICA BZ 986.
2054 Disassembler: Fixed a problem with external declaration generation. Fixes
2055 a problem where an incorrect pathname could be generated for an external
2056 declaration if the original reference to the object includes leading
2057 carats (^). ACPICA BZ 984.
2059 Debugger: Completed a major update for the Disassemble<method> command.
2060 This command was out-of-date and did not properly disassemble control
2061 methods that had any reasonable complexity. This fix brings the command
2063 to the same level as the rest of the disassembler. Adds one new file,
2064 dmdeferred.c, which is existing code that is now common with the main
2065 disassembler and the debugger disassemble command. ACPICA MZ 978.
2067 iASL: Moved the parser entry prototype to avoid a duplicate declaration.
2068 Newer versions of Bison emit this prototype, so moved the prototype out
2070 the iASL header to where it is actually used in order to avoid a
2074 iASL/Tools: Standardized use of the stream I/O functions:
2075 1) Ensure check for I/O error after every fopen/fread/fwrite
2076 2) Ensure proper order of size/count arguments for fread/fwrite
2077 3) Use test of (Actual != Requested) after all fwrite, and most fread
2078 4) Standardize I/O error messages
2079 Improves reliability and maintainability of the code. Bob Moore, Lv
2083 Disassembler: Prevent duplicate External() statements. During generation
2084 of external statements, detect similar pathnames that are actually
2085 duplicates such as these:
2088 Remove all leading '\' characters from pathnames during the external
2089 statement generation so that duplicates will be detected and tossed.
2092 Tools: Replace low-level I/O with stream I/O functions. Replace
2093 open/read/write/close with the stream I/O equivalents
2094 fopen/fread/fwrite/fclose for portability and performance. Lv Zheng, Bob
2097 AcpiBin: Fix for the dump-to-hex function. Now correctly output the table
2098 name header so that AcpiXtract recognizes the output file/table.
2100 iASL: Remove obsolete -2 option flag. Originally intended to force the
2101 compiler/disassembler into an ACPI 2.0 mode, this was never implemented
2102 and the entire concept is now obsolete.
2104 ----------------------------------------
2105 18 October 2012. Summary of changes for version 20121018:
2108 1) ACPICA Kernel-resident Subsystem:
2110 Updated support for the ACPI 5.0 MPST table. Fixes some problems
2111 introduced by late changes to the table as it was added to the ACPI 5.0
2112 specification. Includes header, disassembler, and data table compiler
2113 support as well as a new version of the MPST template.
2115 AcpiGetObjectInfo: Enhanced the device object support to include the ACPI
2116 5.0 _SUB method. Now calls _SUB in addition to the other PNP-related ID
2117 methods: _HID, _CID, and _UID.
2119 Changed ACPI_DEVICE_ID to ACPI_PNP_DEVICE_ID. Also changed
2120 ACPI_DEVICE_ID_LIST to ACPI_PNP_DEVICE_ID_LIST. These changes prevent
2121 name collisions on hosts that reserve the *_DEVICE_ID (or *DeviceId)
2122 names for their various drivers. Affects the AcpiGetObjectInfo external
2123 interface, and other internal interfaces as well.
2125 Added and deployed a new macro for ACPI_NAME management: ACPI_MOVE_NAME.
2126 This macro resolves to a simple 32-bit move of the 4-character ACPI_NAME
2127 on machines that support non-aligned transfers. Optimizes for this case
2128 rather than using a strncpy. With assistance from Zheng Lv.
2130 Resource Manager: Small fix for buffer size calculation. Fixed a one byte
2131 error in the output buffer calculation. Feng Tang. ACPICA BZ 849.
2133 Added a new debug print message for AML mutex objects that are force-
2134 released. At control method termination, any currently acquired mutex
2135 objects are force-released. Adds a new debug-only message for each one
2138 Audited/updated all ACPICA return macros and the function debug depth
2139 counter: 1) Ensure that all functions that use the various TRACE macros
2140 also use the appropriate ACPICA return macros. 2) Ensure that all normal
2141 return statements surround the return expression (value) with parens to
2142 ensure consistency across the ACPICA code base. Guan Chao, Tang Feng,
2143 Zheng Lv, Bob Moore. ACPICA Bugzilla 972.
2145 Global source code changes/maintenance: All extra lines at the start and
2146 end of each source file have been removed for consistency. Also, within
2147 comments, all new sentences start with a single space instead of a double
2148 space, again for consistency across the code base.
2150 Example Code and Data Size: These are the sizes for the OS-independent
2151 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2152 debug version of the code includes the debug output trace mechanism and
2153 has a much larger code and data size.
2156 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
2157 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
2159 Non-Debug Version: 93.9K Code, 25.2K Data, 119.1K Total
2160 Debug Version: 175.5K Code, 74.5K Data, 250.0K Total
2163 2) iASL Compiler/Disassembler and Tools:
2165 AcpiExec: Improved the algorithm used for memory leak/corruption
2166 detection. Added some intelligence to the code that maintains the global
2167 list of allocated memory. The list is now ordered by allocated memory
2168 address, significantly improving performance. When running AcpiExec on
2169 the ASLTS test suite, speed improvements of 3X to 5X are seen, depending
2170 on the platform and/or the environment. Note, this performance
2171 enhancement affects the AcpiExec utility only, not the kernel-resident
2174 Enhanced error reporting for invalid AML opcodes and bad ACPI_NAMEs. For
2175 the disassembler, dump the 48 bytes surrounding the invalid opcode. Fix
2176 incorrect table offset reported for invalid opcodes. Report the original
2177 32-bit value for bad ACPI_NAMEs (as well as the repaired name.)
2179 Disassembler: Enhanced the -vt option to emit the binary table data in
2180 hex format to assist with debugging.
2182 Fixed a potential filename buffer overflow in osunixdir.c. Increased the
2183 size of file structure. Colin Ian King.
2185 ----------------------------------------
2186 13 September 2012. Summary of changes for version 20120913:
2189 1) ACPICA Kernel-resident Subsystem:
2191 ACPI 5.0: Added two new notify types for the Hardware Error Notification
2192 Structure within the Hardware Error Source Table (HEST) table -- CMCI(5)
2196 Table Manager: Merged/removed duplicate code in the root table resize
2197 functions. One function is external, the other is internal. Lv Zheng,
2201 Makefiles: Completely removed the obsolete "Linux" makefiles under
2202 acpica/generate/linux. These makefiles are obsolete and have been
2205 the generic unix makefiles under acpica/generate/unix.
2207 Makefiles: Ensure that binary files always copied properly. Minor rule
2209 to ensure that the final binary output files are always copied up to the
2210 appropriate binary directory (bin32 or bin64.)
2212 Example Code and Data Size: These are the sizes for the OS-independent
2213 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2215 version of the code includes the debug output trace mechanism and has a
2217 larger code and data size.
2220 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
2221 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
2223 Non-Debug Version: 93.7K Code, 25.3K Data, 119.0K Total
2224 Debug Version: 175.0K Code, 74.4K Data, 249.4K Total
2227 2) iASL Compiler/Disassembler and Tools:
2229 Disassembler: Fixed a possible fault during the disassembly of resource
2230 descriptors when a second parse is required because of the invocation of
2231 external control methods within the table. With assistance from
2232 adq@lidskialf.net. ACPICA BZ 976.
2234 iASL: Fixed a namepath optimization problem. An error can occur if the
2236 node that contains the namepath to be optimized does not have a parent
2238 that is a named object. This change fixes the problem.
2240 iASL: Fixed a regression where the AML file is not deleted on errors. The
2242 output file should be deleted if there are any errors during the
2245 only exception is if the -f (force output) option is used. ACPICA BZ 974.
2247 iASL: Added a feature to automatically increase internal line buffer
2249 Via realloc(), automatically increase the internal line buffer sizes as
2250 necessary to support very long source code lines. The current version of
2252 preprocessor requires a buffer long enough to contain full source code
2254 This change increases the line buffer(s) if the input lines go beyond the
2255 current buffer size. This eliminates errors that occurred when a source
2257 line was longer than the buffer.
2259 iASL: Fixed a problem with constant folding in method declarations. The
2260 SyncLevel term is a ByteConstExpr, and incorrect code would be generated
2262 Type3 opcode was used.
2264 Debugger: Improved command help support. For incorrect argument count,
2266 full help for the command. For help command itself, allow an argument to
2269 Test Suites: Several bug fixes for the ASLTS suite reduces the number of
2270 errors during execution of the suite. Guan Chao.
2272 ----------------------------------------
2273 16 August 2012. Summary of changes for version 20120816:
2276 1) ACPICA Kernel-resident Subsystem:
2278 Removed all use of the deprecated _GTS and _BFS predefined methods. The
2280 (Going To Sleep) and _BFS (Back From Sleep) methods are essentially
2281 deprecated and will probably be removed from the ACPI specification.
2283 does not invoke them, and reportedly never will. The final nail in the
2285 is that the ACPI specification states that these methods must be run with
2286 interrupts off, which is not going to happen in a kernel interpreter.
2288 Linux has removed all use of the methods also. It was discovered that
2289 invoking these functions caused failures on some machines, probably
2291 they were never tested since Windows does not call them. Affects two
2293 interfaces, AcpiEnterSleepState and AcpiLeaveSleepStatePrep. Tang Feng.
2296 Implemented support for complex bit-packed buffers returned from the _PLD
2297 (Physical Location of Device) predefined method. Adds a new external
2298 interface, AcpiDecodePldBuffer that parses the buffer into a more usable
2300 structure. Note: C Bitfields cannot be used for this type of predefined
2301 structure since the memory layout of individual bitfields is not defined
2303 the C language. In addition, there are endian concerns where a compiler
2305 change the bitfield ordering based on the machine type. The new ACPICA
2306 interface eliminates these issues, and should be called after _PLD is
2307 executed. ACPICA BZ 954.
2309 Implemented a change to allow a scope change to root (via "Scope (\)")
2311 execution of module-level ASL code (code that is executed at table load
2314 Added the Windows8/Server2012 string for the _OSI method. This change
2317 new _OSI string, "Windows 2012" for both Windows 8 and Windows Server
2320 Added header support for the new ACPI tables DBG2 (Debug Port Table Type
2322 and CSRT (Core System Resource Table).
2324 Added struct header support for the _FDE, _GRT, _GTM, and _SRT predefined
2325 names. This simplifies access to the buffers returned by these predefined
2326 names. Adds a new file, include/acbuffer.h. ACPICA BZ 956.
2328 GPE support: Removed an extraneous parameter from the various low-level
2329 internal GPE functions. Tang Feng.
2331 Removed the linux makefiles from the unix packages. The generate/linux
2332 makefiles are obsolete and have been removed from the unix tarball
2334 packages. The replacement makefiles are under generate/unix, and there is
2336 top-level makefile under the main acpica directory. ACPICA BZ 967, 912.
2338 Updates for Unix makefiles:
2339 1) Add -D_FORTIFY_SOURCE=2 for gcc generation. Arjan van de Ven.
2340 2) Update linker flags (move to end of command line) for AcpiExec
2344 Split ACPICA initialization functions to new file, utxfinit.c. Split from
2345 utxface.c to improve modularity and reduce file size.
2347 Example Code and Data Size: These are the sizes for the OS-independent
2348 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2349 debug version of the code includes the debug output trace mechanism and
2351 much larger code and data size.
2354 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
2355 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
2357 Non-Debug Version: 93.8K Code, 25.3K Data, 119.1K Total
2358 Debug Version: 175.7K Code, 74.8K Data, 250.5K Total
2361 2) iASL Compiler/Disassembler and Tools:
2363 iASL: Fixed a problem with constant folding for fixed-length constant
2364 expressions. The constant-folding code was not being invoked for constant
2365 expressions that allow the use of type 3/4/5 opcodes to generate
2367 for expressions such as ByteConstExpr, WordConstExpr, etc. This could
2369 in the generation of invalid AML bytecode. ACPICA BZ 970.
2371 iASL: Fixed a generation issue on newer versions of Bison. Newer versions
2372 apparently automatically emit some of the necessary externals. This
2374 handles these versions in order to eliminate generation warnings.
2376 Disassembler: Added support to decode the DBG2 and CSRT ACPI tables.
2378 Disassembler: Add support to decode _PLD buffers. The decoded buffer
2380 within comments in the output file.
2382 Debugger: Fixed a regression with the "Threads" command where
2383 AE_BAD_PARAMETER was always returned.
2385 ----------------------------------------
2386 11 July 2012. Summary of changes for version 20120711:
2388 1) ACPICA Kernel-resident Subsystem:
2390 Fixed a possible fault in the return package object repair code. Fixes a
2391 problem that can occur when a lone package object is wrapped with an
2393 package object in order to force conformance to the ACPI specification.
2395 affect these predefined names: _ALR, _MLS, _PSS, _TRT, _TSS, _PRT, _HPX,
2399 Removed code to disable/enable bus master arbitration (ARB_DIS bit in the
2400 PM2_CNT register) in the ACPICA sleep/wake interfaces. Management of the
2401 ARB_DIS bit must be implemented in the host-dependent C3 processor power
2403 support. Note, ARB_DIS is obsolete and only applies to older chipsets,
2405 Intel and other vendors. (for Intel: ICH4-M and earlier)
2407 This change removes the code to disable/enable bus master arbitration
2409 suspend/resume. Use of the ARB_DIS bit in the optional PM2_CNT register
2411 resume problems on some machines. The change has been in use for over
2415 Implemented two new external interfaces to support host-directed dynamic
2417 table load and unload. They are intended to simplify the host
2419 of hot-plug support:
2420 AcpiLoadTable: Load an SSDT from a buffer into the namespace.
2421 AcpiUnloadParentTable: Unload an SSDT via a named object owned by the
2423 See the ACPICA reference for additional details. Adds one new file,
2424 components/tables/tbxfload.c
2426 Implemented and deployed two new interfaces for errors and warnings that
2428 known to be caused by BIOS/firmware issues:
2429 AcpiBiosError: Prints "ACPI Firmware Error" message.
2430 AcpiBiosWarning: Prints "ACPI Firmware Warning" message.
2431 Deployed these new interfaces in the ACPICA Table Manager code for ACPI
2433 and FADT errors. Additional deployment to be completed as appropriate in
2435 future. The associated conditional macros are ACPI_BIOS_ERROR and
2436 ACPI_BIOS_WARNING. See the ACPICA reference for additional details.
2441 Implicit notify support: ensure that no memory allocation occurs within a
2442 critical region. This fix moves a memory allocation outside of the time
2444 spinlock is held. Fixes issues on systems that do not allow this
2448 Split exception code utilities and tables into a new file,
2451 Example Code and Data Size: These are the sizes for the OS-independent
2452 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2454 version of the code includes the debug output trace mechanism and has a
2456 larger code and data size.
2459 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
2460 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
2462 Non-Debug Version: 93.5K Code, 25.3K Data, 118.8K Total
2463 Debug Version: 173.7K Code, 74.0K Data, 247.7K Total
2466 2) iASL Compiler/Disassembler and Tools:
2468 iASL: Fixed a parser problem for hosts where EOF is defined as -1 instead
2472 Debugger: Enhanced the "tables" command to emit additional information
2474 the current set of ACPI tables, including the owner ID and flags decode.
2476 Debugger: Reimplemented the "unload" command to use the new
2477 AcpiUnloadParentTable external interface. This command was disable
2479 due to need for an unload interface.
2481 AcpiHelp: Added a new option to decode ACPICA exception codes. The -e
2483 will decode 16-bit hex status codes (ACPI_STATUS) to name strings.
2485 ----------------------------------------
2486 20 June 2012. Summary of changes for version 20120620:
2489 1) ACPICA Kernel-resident Subsystem:
2491 Implemented support to expand the "implicit notify" feature to allow
2493 devices to be notified by a single GPE. This feature automatically
2495 runtime device notification in the absence of a BIOS-provided GPE control
2496 method (_Lxx/_Exx) or a host-installed handler for the GPE. Implicit
2498 provided by ACPICA for Windows compatibility, and is a workaround for
2501 code errors. See the description of the AcpiSetupGpeForWake interface in
2503 APCICA reference. Bob Moore, Rafael Wysocki. ACPICA BZ 918.
2505 Changed some comments and internal function names to simplify and ensure
2506 correctness of the Linux code translation. No functional changes.
2508 Example Code and Data Size: These are the sizes for the OS-independent
2509 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2511 version of the code includes the debug output trace mechanism and has a
2513 larger code and data size.
2516 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
2517 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
2519 Non-Debug Version: 93.1K Code, 25.1K Data, 118.2K Total
2520 Debug Version: 172.9K Code, 73.6K Data, 246.5K Total
2523 2) iASL Compiler/Disassembler and Tools:
2525 Disassembler: Added support to emit short, commented descriptions for the
2527 predefined names in order to improve the readability of the disassembled
2528 output. ACPICA BZ 959. Changes include:
2529 1) Emit descriptions for all standard predefined names (_INI, _STA,
2532 2) Emit generic descriptions for the special names (_Exx, _Qxx, etc.)
2533 3) Emit descriptions for the resource descriptor names (_MIN, _LEN,
2536 AcpiSrc: Fixed several long-standing Linux code translation issues.
2538 descriptions in function headers are now translated properly to lower
2541 underscores. ACPICA BZ 961. Also fixes translation problems such as
2547 local_fADT -> local_FADT
2548 execute_oSI -> execute_OSI
2550 iASL: Fixed a problem where null bytes were inadvertently emitted into
2554 iASL: Added the existing debug options to the standard help screen. There
2556 no longer two different help screens. ACPICA BZ 957.
2558 AcpiHelp: Fixed some typos in the various predefined name descriptions.
2560 expand some of the descriptions where appropriate.
2562 iASL: Fixed the -ot option (display compile times/statistics). Was not
2564 properly for standard output; only worked for the debug file case.
2566 ----------------------------------------
2567 18 May 2012. Summary of changes for version 20120518:
2570 1) ACPICA Core Subsystem:
2572 Added a new OSL interface, AcpiOsWaitEventsComplete. This interface is
2574 to block until asynchronous events such as notifies and GPEs have
2576 Within ACPICA, it is only called before a notify or GPE handler is
2577 removed/uninstalled. It also may be useful for the host OS within related
2578 drivers such as the Embedded Controller driver. See the ACPICA reference
2580 additional information. ACPICA BZ 868.
2582 ACPI Tables: Added a new error message for a possible overflow failure
2584 the conversion of FADT 32-bit legacy register addresses to internal
2587 bit GAS structure representation. The GAS has a one-byte "bit length"
2589 thus limiting the register length to 255 bits. ACPICA BZ 953.
2591 Example Code and Data Size: These are the sizes for the OS-independent
2592 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2594 version of the code includes the debug output trace mechanism and has a
2596 larger code and data size.
2599 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
2600 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
2602 Non-Debug Version: 93.0K Code, 25.1K Data, 118.1K Total
2603 Debug Version: 172.7K Code, 73.6K Data, 246.3K Total
2606 2) iASL Compiler/Disassembler and Tools:
2608 iASL: Added the ACPI 5.0 "PCC" keyword for use in the Register() ASL
2610 This keyword was added late in the ACPI 5.0 release cycle and was not
2611 implemented until now.
2613 Disassembler: Added support for Operation Region externals. Adds missing
2614 support for operation regions that are defined in another table, and
2615 referenced locally via a Field or BankField ASL operator. Now generates
2617 correct External statement.
2619 Disassembler: Several additional fixes for the External() statement
2621 related to some ASL operators. Also, order the External() statements
2622 alphabetically in the disassembler output. Fixes the External()
2625 the Create* field, Alias, and Scope operators:
2626 1) Create* buffer field operators - fix type mismatch warning on
2628 2) Alias - implement missing External support
2629 3) Scope - fix to make sure all necessary externals are emitted.
2631 iASL: Improved pathname support. For include files, merge the prefix
2633 with the file pathname and eliminate unnecessary components. Convert
2634 backslashes in all pathnames to forward slashes, for readability. Include
2636 pathname changes affect both #include and Include() type operators.
2638 iASL/DTC/Preprocessor: Gracefully handle early EOF. Handle an EOF at the
2640 of a valid line by inserting a newline and then returning the EOF during
2642 next call to GetNextLine. Prevents the line from being ignored due to EOF
2645 iASL: Implemented some changes to enhance the IDE support (-vi option.)
2647 and Warning messages are now correctly recognized for both the source
2649 browser and the global error and warning counts.
2651 ----------------------------------------
2652 20 April 2012. Summary of changes for version 20120420:
2655 1) ACPICA Core Subsystem:
2657 Implemented support for multiple notify handlers. This change adds
2660 allow multiple system and device notify handlers on Device, Thermal Zone,
2662 Processor objects. This can simplify the host OS notification
2664 Also re-worked and restructured the entire notify support code to
2666 handler installation, handler removal, notify event queuing, and notify
2667 dispatch to handler(s). Note: there can still only be two global notify
2668 handlers - one for system notifies and one for device notifies. There are
2670 changes to the existing handler install/remove interfaces. Lin Ming, Bob
2671 Moore, Rafael Wysocki.
2673 Fixed a regression in the package repair code where the object reference
2674 count was calculated incorrectly. Regression was introduced in the commit
2675 "Support to add Package wrappers".
2677 Fixed a couple possible memory leaks in the AML parser, in the error
2679 path. Jesper Juhl, Lin Ming.
2681 Example Code and Data Size: These are the sizes for the OS-independent
2682 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2683 debug version of the code includes the debug output trace mechanism and
2685 much larger code and data size.
2688 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
2689 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
2691 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
2692 Debug Version: 172.6K Code, 73.4K Data, 246.0K Total
2695 2) iASL Compiler/Disassembler and Tools:
2697 iASL: Fixed a problem with the resource descriptor support where the
2699 of the StartDependentFn and StartDependentFnNoPrio descriptors were not
2700 included in cumulative descriptor offset, resulting in incorrect values
2702 resource tags within resource descriptors appearing after a
2704 descriptor. Reported by Petr Vandrovec. ACPICA BZ 949.
2706 iASL and Preprocessor: Implemented full support for the #line directive
2708 correctly track original source file line numbers through the .i
2710 output file - for error and warning messages.
2712 iASL: Expand the allowable byte constants for address space IDs.
2714 the allowable range was 0x80-0xFF (user-defined spaces), now the range is
2715 0x0A-0xFF to allow for custom and new IDs without changing the compiler.
2717 iASL: Add option to treat all warnings as errors (-we). ACPICA BZ 948.
2719 iASL: Add option to completely disable the preprocessor (-Pn).
2721 iASL: Now emit all error/warning messages to standard error (stderr) by
2722 default (instead of the previous stdout).
2724 ASL Test Suite (ASLTS): Reduce iASL warnings due to use of Switch().
2726 for resource descriptor offset fix above. Update/cleanup error output
2727 routines. Enable and send iASL errors/warnings to an error logfile
2728 (error.txt). Send all other iASL output to a logfile (compiler.txt).
2730 several extraneous "unrecognized operator" messages.
2732 ----------------------------------------
2733 20 March 2012. Summary of changes for version 20120320:
2736 1) ACPICA Core Subsystem:
2738 Enhanced the sleep/wake interfaces to optionally execute the _GTS method
2739 (Going To Sleep) and the _BFS method (Back From Sleep). Windows
2741 does not execute these methods, and therefore these methods are often
2742 untested. It has been seen on some systems where the execution of these
2743 methods causes errors and also prevents the machine from entering S5. It
2745 therefore suggested that host operating systems do not execute these
2747 by default. In the future, perhaps these methods can be optionally
2749 based on the age of the system and/or what is the newest version of
2751 that the BIOS asks for via _OSI. Changed interfaces: AcpiEnterSleepState
2753 AcpileaveSleepStatePrep. See the ACPICA reference and Linux BZ 13041. Lin
2756 Fixed a problem where the length of the local/common FADT was set too
2758 The local FADT table length cannot be set to the common length until the
2759 original length has been examined. There is code that checks the table
2761 and sets various fields appropriately. This can affect older machines
2763 early FADT versions. For example, this can cause inadvertent writes to
2765 CST_CNT register. Julian Anastasov.
2767 Fixed a mapping issue related to a physical table override. Use the
2769 mapping mechanism for tables loaded via the physical override OSL
2771 This allows for early mapping before the virtual memory manager is
2773 Thomas Renninger, Bob Moore.
2775 Enhanced the automatic return-object repair code: Repair a common problem
2777 predefined methods that are defined to return a variable-length Package
2779 sub-objects. If there is only one sub-object, some BIOS ASL code
2781 simply returns the single object instead of a Package with one sub-
2783 This new support will repair this error by wrapping a Package object
2785 the original object, creating the correct and expected Package with one
2787 object. Names that can be repaired in this manner include: _ALR, _CSD,
2789 _MLS, _PLD, _PRT, _PSS, _TRT, _TSS, _BCL, _DOD, _FIX, and _Sx. ACPICA BZ
2792 Changed the exception code returned for invalid ACPI paths passed as
2793 parameters to external interfaces such as AcpiEvaluateObject. Was
2794 AE_BAD_PARAMETER, now is the more sensible AE_BAD_PATHNAME.
2796 Example Code and Data Size: These are the sizes for the OS-independent
2797 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2799 version of the code includes the debug output trace mechanism and has a
2801 larger code and data size.
2804 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
2805 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
2807 Non-Debug Version: 92.9K Code, 25.0K Data, 117.9K Total
2808 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
2811 2) iASL Compiler/Disassembler and Tools:
2813 iASL: Added the infrastructure and initial implementation of a integrated
2815 like preprocessor. This will simplify BIOS development process by
2817 the need for a separate preprocessing step during builds. On Windows, it
2819 eliminates the need to install a separate C compiler. ACPICA BZ 761. Some
2820 features including full #define() macro support are still under
2822 These preprocessor directives are supported:
2835 In addition, these new command line options are supported:
2836 -D <symbol> Define symbol for preprocessor use
2837 -li Create preprocessed output file (*.i)
2838 -P Preprocess only and create preprocessor output file (*.i)
2840 Table Compiler: Fixed a problem where the equals operator within an
2842 did not work properly.
2844 Updated iASL to use the current versions of Bison/Flex. Updated the
2846 project file to invoke these tools from the standard location. ACPICA BZ
2849 Flex for Windows: V2.5.4
2850 Bison for Windows: V2.4.1
2852 ----------------------------------------
2853 15 February 2012. Summary of changes for version 20120215:
2856 1) ACPICA Core Subsystem:
2858 There have been some major changes to the sleep/wake support code, as
2859 described below (a - e).
2861 a) The AcpiLeaveSleepState has been split into two interfaces, similar to
2862 AcpiEnterSleepStatePrep and AcpiEnterSleepState. The new interface is
2863 AcpiLeaveSleepStatePrep. This allows the host to perform actions between
2865 time the _BFS method is called and the _WAK method is called. NOTE: all
2867 must update their wake/resume code or else sleep/wake will not work
2871 b) In AcpiLeaveSleepState, now enable all runtime GPEs before calling the
2873 method. Some machines require that the GPEs are enabled before the _WAK
2875 is executed. Thomas Renninger.
2877 c) In AcpiLeaveSleepState, now always clear the WAK_STS (wake status)
2879 Some BIOS code assumes that WAK_STS will be cleared on resume and use it
2881 determine whether the system is rebooting or resuming. Matthew Garrett.
2883 d) Move the invocations of _GTS (Going To Sleep) and _BFS (Back From
2885 match the ACPI specification requirement. Rafael Wysocki.
2887 e) Implemented full support for the ACPI 5.0 SleepStatus and SleepControl
2888 registers within the V5 FADT. This support adds two new files:
2889 hardware/hwesleep.c implements the support for the new registers. Moved
2891 sleep/wake external interfaces to hardware/hwxfsleep.c.
2894 Added a new OSL interface for ACPI table overrides,
2895 AcpiOsPhysicalTableOverride. This interface allows the host to override a
2896 table via a physical address, instead of the logical address required by
2897 AcpiOsTableOverride. This simplifies the host implementation. Initial
2898 implementation by Thomas Renninger. The ACPICA implementation creates a
2900 shared function for table overrides that attempts both a logical and a
2903 Expanded the OSL memory read/write interfaces to 64-bit data
2904 (AcpiOsReadMemory, AcpiOsWriteMemory.) This enables full 64-bit memory
2905 transfer support for GAS register structures passed to AcpiRead and
2908 Implemented the ACPI_REDUCED_HARDWARE option to allow the creation of a
2910 build of ACPICA that supports only the ACPI 5.0 reduced hardware (SoC)
2912 See the ACPICA reference for details. ACPICA BZ 942. This option removes
2914 10% of the code and 5% of the static data, and the following hardware
2916 features become unavailable:
2917 PM Event and Control registers
2918 SCI interrupt (and handler)
2920 General Purpose Events (GPEs)
2923 FACS table (Waking vectors and Global Lock)
2925 Updated the unix tarball directory structure to match the ACPICA git
2927 tree. This ensures that the generic unix makefiles work properly (in
2928 generate/unix). Also updated the Linux makefiles to match. ACPICA BZ
2931 Updated the return value of the _REV predefined method to integer value 5
2933 reflect ACPI 5.0 support.
2935 Moved the external ACPI PM timer interface prototypes to the public
2937 file where they belong.
2939 Example Code and Data Size: These are the sizes for the OS-independent
2940 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2942 version of the code includes the debug output trace mechanism and has a
2944 larger code and data size.
2947 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
2948 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
2950 Non-Debug Version: 93.0K Code, 25.0K Data, 118.0K Total
2951 Debug Version: 172.5K Code, 73.2K Data, 245.7K Total
2954 2) iASL Compiler/Disassembler and Tools:
2956 Disassembler: Fixed a problem with the new ACPI 5.0 serial resource
2957 descriptors (I2C, SPI, UART) where the resource produce/consumer bit was
2958 incorrectly displayed.
2960 AcpiHelp: Add display of ACPI/PNP device IDs that are defined in the ACPI
2963 ----------------------------------------
2964 11 January 2012. Summary of changes for version 20120111:
2967 1) ACPICA Core Subsystem:
2969 Implemented a new mechanism to allow host device drivers to check for
2971 range conflicts with ACPI Operation Regions. Both SystemMemory and
2973 address spaces are supported. A new external interface,
2974 AcpiCheckAddressRange,
2975 allows drivers to check an address range against the ACPI namespace. See
2977 ACPICA reference for additional details. Adds one new file,
2978 utilities/utaddress.c. Lin Ming, Bob Moore.
2980 Fixed several issues with the ACPI 5.0 FADT support: Add the sleep
2983 Status registers, update the ACPI 5.0 flags, and update internal data
2984 structures to handle an FADT larger than 256 bytes. The size of the ACPI
2988 Updated all ACPICA copyrights and signons to 2012. Added the 2012
2990 all module headers and signons, including the standard Linux header. This
2991 affects virtually every file in the ACPICA core subsystem, iASL compiler,
2993 all ACPICA utilities.
2995 Example Code and Data Size: These are the sizes for the OS-independent
2996 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
2998 version of the code includes the debug output trace mechanism and has a
3000 larger code and data size.
3003 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
3004 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
3006 Non-Debug Version: 92.8K Code, 24.9K Data, 117.7K Total
3007 Debug Version: 171.7K Code, 72.9K Data, 244.5K Total
3010 2) iASL Compiler/Disassembler and Tools:
3012 Disassembler: fixed a problem with the automatic resource tag generation
3013 support. Fixes a problem where the resource tags are inadvertently not
3014 constructed if the table being disassembled contains external references
3016 control methods. Moved the actual construction of the tags to after the
3018 namespace is constructed (after 2nd parse is invoked due to external
3020 method references.) ACPICA BZ 941.
3022 Table Compiler: Make all "generic" operators caseless. These are the
3024 like UINT8, String, etc. Making these caseless improves ease-of-use.
3028 ----------------------------------------
3029 23 November 2011. Summary of changes for version 20111123:
3031 0) ACPI 5.0 Support:
3033 This release contains full support for the ACPI 5.0 specification, as
3036 Reduced Hardware Support:
3037 -------------------------
3039 This support allows for ACPI systems without the usual ACPI hardware.
3041 support is enabled by a flag in the revision 5 FADT. If it is set, ACPICA
3043 not attempt to initialize or use any of the usual ACPI hardware. Note,
3045 this flag is set, all of the following ACPI hardware is assumed to be not
3046 present and is not initialized or accessed:
3048 General Purpose Events (GPEs)
3049 Fixed Events (PM1a/PM1b and PM Control)
3050 Power Management Timer and Console Buttons (power/sleep)
3051 Real-time Clock Alarm
3053 System Control Interrupt (SCI)
3054 The FACS is assumed to be non-existent
3059 All new tables and updates to existing tables are fully supported in the
3060 ACPICA headers (for use by device drivers), the disassembler, and the
3062 Data Table Compiler. ACPI 5.0 defines these new tables:
3064 BGRT /* Boot Graphics Resource Table */
3065 DRTM /* Dynamic Root of Trust for Measurement table */
3066 FPDT /* Firmware Performance Data Table */
3067 GTDT /* Generic Timer Description Table */
3068 MPST /* Memory Power State Table */
3069 PCCT /* Platform Communications Channel Table */
3070 PMTT /* Platform Memory Topology Table */
3071 RASF /* RAS Feature table */
3073 Operation Regions/SpaceIDs:
3074 ---------------------------
3076 All new operation regions are fully supported by the iASL compiler, the
3077 disassembler, and the ACPICA runtime code (for dispatch to region
3079 The new operation region Space IDs are:
3084 Resource Descriptors:
3085 ---------------------
3087 All new ASL resource descriptors are fully supported by the iASL
3090 ASL/AML disassembler, and the ACPICA runtime Resource Manager code
3092 all new predefined resource tags). New descriptors are:
3101 ASL/AML Operators, New and Modified:
3102 ------------------------------------
3104 One new operator is added, the Connection operator, which is used to
3106 a GeneralPurposeIo or GenericSerialBus resource descriptor with
3108 field objects within an operation region. Several new protocols are
3110 with the AccessAs operator. All are fully supported by the iASL compiler,
3111 disassembler, and runtime ACPICA AML interpreter:
3113 Connection // Declare Field Connection
3115 AccessAs: AttribBytes (n) // Read/Write N-Bytes Protocol
3116 AccessAs: AttribRawBytes (n) // Raw Read/Write N-Bytes
3118 AccessAs: AttribRawProcessBytes (n) // Raw Process Call Protocol
3119 RawDataBuffer // Data type for Vendor Data
3122 Predefined ASL/AML Objects:
3123 ---------------------------
3125 All new predefined objects/control-methods are supported by the iASL
3127 and the ACPICA runtime validation/repair (arguments and return values.)
3129 predefined names include the following:
3131 Standard Predefined Names (Objects or Control Methods):
3132 _AEI, _CLS, _CPC, _CWS, _DEP,
3133 _DLM, _EVT, _GCP, _CRT, _GWS,
3134 _HRV, _PRE, _PSE, _SRT, _SUB.
3136 Resource Tags (Names used to access individual fields within resource
3138 _DBT, _DPL, _DRS, _END, _FLC,
3139 _IOR, _LIN, _MOD, _PAR, _PHA,
3140 _PIN, _PPI, _POL, _RXL, _SLV,
3141 _SPE, _STB, _TXL, _VEN.
3143 ACPICA External Interfaces:
3144 ---------------------------
3146 Several new interfaces have been defined for use by ACPI-related device
3147 drivers and other host OS services:
3149 AcpiAcquireMutex and AcpiReleaseMutex: These interfaces allow the host OS
3151 acquire and release AML mutexes that are defined in the DSDT/SSDT tables
3152 provided by the BIOS. They are intended to be used in conjunction with
3154 ACPI 5.0 _DLM (Device Lock Method) in order to provide transaction-level
3155 mutual exclusion with the AML code/interpreter.
3157 AcpiGetEventResources: Returns the (formatted) resource descriptors as
3159 by the ACPI 5.0 _AEI object (ACPI Event Information). This object
3161 resource descriptors associated with hardware-reduced platform events,
3163 to the AcpiGetCurrentResources interface.
3165 Operation Region Handlers: For General Purpose IO and Generic Serial Bus
3166 operation regions, information about the Connection() object and any
3168 length information is passed to the region handler within the Context
3171 AcpiBufferToResource: This interface converts a raw AML buffer containing
3173 resource template or resource descriptor to the ACPI_RESOURCE internal
3175 suitable for use by device drivers. Can be used by an operation region
3177 to convert the Connection() buffer object into a ACPI_RESOURCE.
3179 Miscellaneous/Tools/TestSuites:
3180 -------------------------------
3182 Support for extended _HID names (Four alpha characters instead of three).
3183 Support for ACPI 5.0 features in the AcpiExec and AcpiHelp utilities.
3184 Support for ACPI 5.0 features in the ASLTS test suite.
3185 Fully updated documentation (ACPICA and iASL reference documents.)
3187 ACPI Table Definition Language:
3188 -------------------------------
3190 Support for this language was implemented and released as a subsystem of
3192 iASL compiler in 2010. (See the iASL compiler User Guide.)
3195 Non-ACPI 5.0 changes for this release:
3196 --------------------------------------
3198 1) ACPICA Core Subsystem:
3200 Fix a problem with operation region declarations where a failure can
3203 the region name and an argument that evaluates to an object (such as the
3204 region address) are in different namespace scopes. Lin Ming, ACPICA BZ
3207 Do not abort an ACPI table load if an invalid space ID is found within.
3209 will be caught later if the offending method is executed. ACPICA BZ 925.
3211 Fixed an issue with the FFixedHW space ID where the ID was not always
3212 recognized properly (Both ACPICA and iASL). ACPICA BZ 926.
3214 Fixed a problem with the 32-bit generation of the unix-specific OSL
3215 (osunixxf.c). Lin Ming, ACPICA BZ 936.
3217 Several changes made to enable generation with the GCC 4.6 compiler.
3221 New error messages: Unsupported I/O requests (not 8/16/32 bit), and
3223 field registers out-of-range.
3225 2) iASL Compiler/Disassembler and Tools:
3227 iASL: Implemented the __PATH__ operator, which returns the full pathname
3229 the current source file.
3231 AcpiHelp: Automatically display expanded keyword information for all ASL
3234 Debugger: Add "Template" command to disassemble/dump resource template
3237 Added a new master script to generate and execute the ASLTS test suite.
3238 Automatically handles 32- and 64-bit generation. See tests/aslts.sh
3240 iASL: Fix problem with listing generation during processing of the
3242 operator where AML listing was disabled until the entire Switch block was
3245 iASL: Improve support for semicolon statement terminators. Fix "invalid
3246 character" message for some cases when the semicolon is used. Semicolons
3248 now allowed after every <Term> grammar element. ACPICA BZ 927.
3250 iASL: Fixed some possible aliasing warnings during generation. ACPICA BZ
3253 Disassembler: Fix problem with disassembly of the DataTableRegion
3255 where an inadvertent "Unhandled deferred opcode" message could be
3258 3) Example Code and Data Size
3260 These are the sizes for the OS-independent acpica.lib produced by the
3261 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
3262 includes the debug output trace mechanism and has a much larger code and
3267 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
3268 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
3270 Non-Debug Version: 92.3K Code, 24.9K Data, 117.2K Total
3271 Debug Version: 170.8K Code, 72.6K Data, 243.4K Total
3273 ----------------------------------------
3274 22 September 2011. Summary of changes for version 20110922:
3278 Support for ACPI 5.0 in ACPICA has been underway for several months and
3280 be released at the same time that ACPI 5.0 is officially released.
3282 The ACPI 5.0 specification is on track for release in the next few
3285 1) ACPICA Core Subsystem:
3287 Fixed a problem where the maximum sleep time for the Sleep() operator was
3288 intended to be limited to two seconds, but was inadvertently limited to
3292 Linux and Unix makefiles: Added header file dependencies to ensure
3294 generation of ACPICA core code and utilities. Also simplified the
3296 considerably through the use of the vpath variable to specify search
3300 2) iASL Compiler/Disassembler and Tools:
3302 iASL: Implemented support to check the access length for all fields
3304 access named Resource Descriptor fields. For example, if a resource field
3306 defined to be two bits, a warning is issued if a CreateXxxxField() is
3308 with an incorrect bit length. This is implemented for all current
3310 descriptor names. ACPICA BZ 930.
3312 Disassembler: Fixed a byte ordering problem with the output of 24-bit and
3316 iASL: Fixed a couple of issues associated with variable-length package
3317 objects. 1) properly handle constants like One, Ones, Zero -- do not make
3319 VAR_PACKAGE when these are used as a package length. 2) Allow the
3321 opcode (in addition to PACKAGE) when validating object types for
3325 iASL: Emit statistics for all output files (instead of just the ASL input
3327 AML output). Includes listings, hex files, etc.
3329 iASL: Added -G option to the table compiler to allow the compilation of
3331 ACPI tables. The only part of a table that is required is the standard
3336 AcpiXtract: Ported to the standard ACPICA environment (with ACPICA
3338 which also adds correct 64-bit support. Also, now all output filenames
3340 completely lower case.
3342 AcpiExec: Ignore any non-AML tables (tables other than DSDT or SSDT) when
3343 loading table files. A warning is issued for any such tables. The only
3344 exception is an FADT. This also fixes a possible fault when attempting to
3346 non-AML tables. ACPICA BZ 932.
3348 AcpiHelp: Added the AccessAs and Offset operators. Fixed a problem where
3350 missing table terminator could cause a fault when using the -p option.
3352 AcpiSrc: Fixed a possible divide-by-zero fault when generating file
3355 3) Example Code and Data Size
3357 These are the sizes for the OS-independent acpica.lib produced by the
3358 Microsoft Visual C++ 9.0 32-bit compiler. The debug version of the code
3359 includes the debug output trace mechanism and has a much larger code and
3363 Previous Release (VC 9.0):
3364 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
3365 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
3366 Current Release (VC 9.0):
3367 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
3368 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
3371 ----------------------------------------
3372 23 June 2011. Summary of changes for version 20110623:
3374 1) ACPI CA Core Subsystem:
3376 Updated the predefined name repair mechanism to not attempt repair of a
3378 return object if a _PSS object is present. We can only sort the _TSS
3380 package if there is no _PSS within the same scope. This is because if
3383 present, the ACPI specification dictates that the _TSS Power Dissipation
3385 is to be ignored, and therefore some BIOSs leave garbage values in the
3387 Power field(s). In this case, it is best to just return the _TSS package
3389 is. Reported by, and fixed with assistance from Fenghua Yu.
3391 Added an option to globally disable the control method return value
3393 and repair. This runtime option can be used to disable return value
3396 this is causing a problem on a particular machine. Also added an option
3398 AcpiExec (-dr) to set this disable flag.
3400 All makefiles and project files: Major changes to improve generation of
3402 tools. ACPICA BZ 912:
3403 Reduce default optimization levels to improve compatibility
3404 For Linux, add strict-aliasing=0 for gcc 4
3405 Cleanup and simplify use of command line defines
3406 Cleanup multithread library support
3407 Improve usage messages
3409 Linux-specific header: update handling of THREAD_ID and pthread. For the
3411 bit case, improve casting to eliminate possible warnings, especially with
3415 Example Code and Data Size: These are the sizes for the OS-independent
3416 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3418 version of the code includes the debug output trace mechanism and has a
3420 larger code and data size.
3422 Previous Release (VC 9.0):
3423 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
3424 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
3425 Current Release (VC 9.0):
3426 Non-Debug Version: 90.2K Code, 23.9K Data, 114.1K Total
3427 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
3429 2) iASL Compiler/Disassembler and Tools:
3431 With this release, a new utility named "acpihelp" has been added to the
3433 package. This utility summarizes the ACPI specification chapters for the
3435 and AML languages. It generates under Linux/Unix as well as Windows, and
3436 provides the following functionality:
3437 Find/display ASL operator(s) -- with description and syntax.
3438 Find/display ASL keyword(s) -- with exact spelling and descriptions.
3439 Find/display ACPI predefined name(s) -- with description, number
3440 of arguments, and the return value data type.
3441 Find/display AML opcode name(s) -- with opcode, arguments, and
3443 Decode/display AML opcode -- with opcode name, arguments, and
3446 Service Layers: Make multi-thread support configurable. Conditionally
3448 the multi-thread support so that threading libraries will not be linked
3451 necessary. The only tool that requires multi-thread support is AcpiExec.
3453 iASL: Update yyerrror/AslCompilerError for "const" errors. Newer versions
3455 Bison appear to want the interface to yyerror to be a const char * (or at
3456 least this is a problem when generating iASL on some systems.) ACPICA BZ
3460 Tools: Fix for systems where O_BINARY is not defined. Only used for
3462 versions of the tools.
3464 ----------------------------------------
3465 27 May 2011. Summary of changes for version 20110527:
3467 1) ACPI CA Core Subsystem:
3469 ASL Load() operator: Reinstate most restrictions on the incoming ACPI
3471 signature. Now, only allow SSDT, OEMx, and a null signature. History:
3472 1) Originally, we checked the table signature for "SSDT" or "PSDT".
3473 (PSDT is now obsolete.)
3474 2) We added support for OEMx tables, signature "OEM" plus a fourth
3475 "don't care" character.
3476 3) Valid tables were encountered with a null signature, so we just
3477 gave up on validating the signature, (05/2008).
3478 4) We encountered non-AML tables such as the MADT, which caused
3479 interpreter errors and kernel faults. So now, we once again allow
3480 only SSDT, OEMx, and now, also a null signature. (05/2011).
3482 Added the missing _TDL predefined name to the global name list in order
3484 enable validation. Affects both the core ACPICA code and the iASL
3487 Example Code and Data Size: These are the sizes for the OS-independent
3488 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3490 version of the code includes the debug output trace mechanism and has a
3492 larger code and data size.
3494 Previous Release (VC 9.0):
3495 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
3496 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
3497 Current Release (VC 9.0):
3498 Non-Debug Version: 90.1K Code, 23.9K Data, 114.0K Total
3499 Debug Version: 165.6K Code, 68.4K Data, 234.0K Total
3501 2) iASL Compiler/Disassembler and Tools:
3503 Debugger/AcpiExec: Implemented support for "complex" method arguments on
3505 debugger command line. This adds support beyond simple integers --
3507 Strings, Buffers, and Packages. Includes support for nested packages.
3508 Increased the default command line buffer size to accommodate these
3510 See the ACPICA reference for details and syntax. ACPICA BZ 917.
3512 Debugger/AcpiExec: Implemented support for "default" method arguments for
3514 Execute/Debug command. Now, the debugger will always invoke a control
3516 with the required number of arguments -- even if the command line
3518 none or insufficient arguments. It uses default integer values for any
3520 arguments. Also fixes a bug where only six method arguments maximum were
3521 supported instead of the required seven.
3523 Debugger/AcpiExec: Add a maximum buffer length parameter to AcpiOsGetLine
3525 also return status in order to prevent buffer overruns. See the ACPICA
3526 reference for details and syntax. ACPICA BZ 921
3528 iASL: Cleaned up support for Berkeley yacc. A general cleanup of code and
3529 makefiles to simplify support for the two different but similar parser
3530 generators, bison and yacc.
3532 Updated the generic unix makefile for gcc 4. The default gcc version is
3534 expected to be 4 or greater, since options specific to gcc 4 are used.
3536 ----------------------------------------
3537 13 April 2011. Summary of changes for version 20110413:
3539 1) ACPI CA Core Subsystem:
3541 Implemented support to execute a so-called "orphan" _REG method under the
3543 device. This change will force the execution of a _REG method underneath
3546 device even if there is no corresponding operation region of type
3547 EmbeddedControl. Fixes a problem seen on some machines and apparently is
3548 compatible with Windows behavior. ACPICA BZ 875.
3550 Added more predefined methods that are eligible for automatic NULL
3552 element removal. This change adds another group of predefined names to
3555 of names that can be repaired by having NULL package elements dynamically
3556 removed. This group are those methods that return a single variable-
3558 package containing simple data types such as integers, buffers, strings.
3560 includes: _ALx, _BCL, _CID,_ DOD, _EDL, _FIX, _PCL, _PLD, _PMD, _PRx,
3563 and _TZD. ACPICA BZ 914.
3565 Split and segregated all internal global lock functions to a new file,
3568 Updated internal address SpaceID for DataTable regions. Moved this
3571 id in preparation for ACPI 5.0 changes that will include some new space
3574 change should not affect user/host code.
3576 Example Code and Data Size: These are the sizes for the OS-independent
3578 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
3580 the code includes the debug output trace mechanism and has a much larger
3585 Previous Release (VC 9.0):
3586 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
3587 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
3588 Current Release (VC 9.0):
3589 Non-Debug Version: 90.0K Code, 23.8K Data, 113.8K Total
3590 Debug Version: 164.5K Code, 68.0K Data, 232.5K Total
3592 2) iASL Compiler/Disassembler and Tools:
3594 iASL/DTC: Major update for new grammar features. Allow generic data types
3596 custom ACPI tables. Field names are now optional. Any line can be split
3598 multiple lines using the continuation char (\). Large buffers now use
3600 continuation character(s) and no colon on the continuation lines. See the
3602 update in the iASL compiler reference. ACPI BZ 910,911. Lin Ming, Bob
3605 iASL: Mark ASL "Return()" and the simple "Return" as "Null" return
3607 Since the parser stuffs a "zero" as the return value for these statements
3610 the underlying AML grammar), they were seen as "return with value" by the
3612 semantic checking. They are now seen correctly as "null" return
3615 iASL: Check if a_REG declaration has a corresponding Operation Region.
3617 check for each _REG to ensure that there is in fact a corresponding
3619 region declaration in the same scope. If not, the _REG method is not very
3621 since it probably won't be executed. ACPICA BZ 915.
3623 iASL/DTC: Finish support for expression evaluation. Added a new
3626 that implements c-style operator precedence and parenthesization. ACPICA
3630 Disassembler/DTC: Remove support for () and <> style comments in data
3633 that DTC has full expression support, we don't want to have comment
3636 start with a parentheses or a less-than symbol. Now, only the standard /*
3639 comments are supported, as well as the bracket [] comments.
3641 AcpiXtract: Fix for RSDP and dynamic SSDT extraction. These tables have
3643 headers in the acpidump file. Update the header validation to support
3645 tables. Problem introduced in previous AcpiXtract version in the change
3647 support "wrong checksum" error messages emitted by acpidump utility.
3649 iASL: Add a * option to generate all template files (as a synonym for
3653 "iasl -T *" or "iasl -T ALL".
3655 iASL/DTC: Do not abort compiler on fatal errors. We do not want to
3657 abort the compiler on "fatal" errors, simply should abort the current
3659 This allows multiple compiles with a single (possibly wildcard) compiler
3662 ----------------------------------------
3663 16 March 2011. Summary of changes for version 20110316:
3665 1) ACPI CA Core Subsystem:
3667 Fixed a problem caused by a _PRW method appearing at the namespace root
3669 during the setup of wake GPEs. A fault could occur if a _PRW directly
3672 root object was passed to the AcpiSetupGpeForWake interface. Lin Ming.
3674 Implemented support for "spurious" Global Lock interrupts. On some
3676 global lock interrupt can occur without the pending flag being set. Upon
3679 interrupt, we now ensure that a thread is actually waiting for the lock
3681 signaling GL availability. Rafael Wysocki, Bob Moore.
3683 Example Code and Data Size: These are the sizes for the OS-independent
3685 produced by the Microsoft Visual C++ 9.0 32-bit compiler. The debug
3687 the code includes the debug output trace mechanism and has a much larger
3692 Previous Release (VC 9.0):
3693 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
3694 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
3695 Current Release (VC 9.0):
3696 Non-Debug Version: 89.8K Code, 23.8K Data, 113.6K Total
3697 Debug Version: 164.2K Code, 67.9K Data, 232.1K Total
3699 2) iASL Compiler/Disassembler and Tools:
3701 Implemented full support for the "SLIC" ACPI table. Includes support in
3703 header files, disassembler, table compiler, and template generator. Bob
3707 AcpiXtract: Correctly handle embedded comments and messages from
3709 Apparently some or all versions of acpidump will occasionally emit a
3712 "Wrong checksum", etc., into the dump file. This was causing problems for
3713 AcpiXtract. ACPICA BZ 905.
3715 iASL: Fix the Linux makefile by removing an inadvertent double file
3719 AcpiExec: Update installation of operation region handlers. Install one
3721 for a user-defined address space. This is used by the ASL test suite
3724 ----------------------------------------
3725 11 February 2011. Summary of changes for version 20110211:
3727 1) ACPI CA Core Subsystem:
3729 Added a mechanism to defer _REG methods for some early-installed
3731 Most user handlers should be installed before call to
3732 AcpiEnableSubsystem.
3733 However, Event handlers and region handlers should be installed after
3734 AcpiInitializeObjects. Override handlers for the "default" regions should
3736 installed early, however. This change executes all _REG methods for the
3737 default regions (Memory/IO/PCI/DataTable) simultaneously to prevent any
3738 chicken/egg issues between them. ACPICA BZ 848.
3740 Implemented an optimization for GPE detection. This optimization will
3742 ignore GPE registers that contain no enabled GPEs -- there is no need to
3743 read the register since this information is available internally. This
3744 becomes more important on machines with a large GPE space. ACPICA
3746 884. Lin Ming. Suggestion from Joe Liu.
3748 Removed all use of the highly unreliable FADT revision field. The
3750 number in the FADT has been found to be completely unreliable and cannot
3752 trusted. Only the actual table length can be used to infer the version.
3754 change updates the ACPICA core and the disassembler so that both no
3756 even look at the FADT version and instead depend solely upon the FADT
3759 Fix an unresolved name issue for the no-debug and no-error-message source
3760 generation cases. The _AcpiModuleName was left undefined in these cases,
3762 it is actually needed as a parameter to some interfaces. Define
3763 _AcpiModuleName as a null string in these cases. ACPICA Bugzilla 888.
3765 Split several large files (makefiles and project files updated)
3766 utglobal.c -> utdecode.c
3767 dbcomds.c -> dbmethod.c dbnames.c
3768 dsopcode.c -> dsargs.c dscontrol.c
3769 dsload.c -> dsload2.c
3770 aslanalyze.c -> aslbtypes.c aslwalks.c
3772 Example Code and Data Size: These are the sizes for the OS-independent
3773 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3774 debug version of the code includes the debug output trace mechanism and
3776 a much larger code and data size.
3778 Previous Release (VC 9.0):
3779 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
3780 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
3781 Current Release (VC 9.0):
3782 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
3783 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
3785 2) iASL Compiler/Disassembler and Tools:
3787 iASL: Implemented the predefined macros __LINE__, __FILE__, and __DATE__.
3788 These are useful C-style macros with the standard definitions. ACPICA
3791 iASL/DTC: Added support for integer expressions and labels. Support for
3793 expressions for all integer fields in all ACPI tables. Support for labels
3795 "generic" portions of tables such as UEFI. See the iASL reference manual.
3797 Debugger: Added a command to display the status of global handlers. The
3798 "handlers" command will display op region, fixed event, and miscellaneous
3799 global handlers. installation status -- and for op regions, whether
3801 or user-installed handler will be used.
3803 iASL: Warn if reserved method incorrectly returns a value. Many
3805 names are defined such that they do not return a value. If implemented as
3807 method, issue a warning if such a name explicitly returns a value. ACPICA
3810 iASL: Added detection of GPE method name conflicts. Detects a conflict
3812 there are two GPE methods of the form _Lxy and _Exy in the same scope.
3814 example, _L1D and _E1D in the same scope.) ACPICA bugzilla 848.
3816 iASL/DTC: Fixed a couple input scanner issues with comments and line
3817 numbers. Comment remover could get confused and miss a comment ending.
3819 a problem with line counter maintenance.
3821 iASL/DTC: Reduced the severity of some errors from fatal to error. There
3823 no need to abort on simple errors within a field definition.
3825 Debugger: Simplified the output of the help command. All help output now
3827 a single screen, instead of help subcommands. ACPICA Bugzilla 897.
3829 ----------------------------------------
3830 12 January 2011. Summary of changes for version 20110112:
3832 1) ACPI CA Core Subsystem:
3834 Fixed a race condition between method execution and namespace walks that
3836 possibly cause a fault. The problem was apparently introduced in version
3837 20100528 as a result of a performance optimization that reduces the
3840 namespace walks upon method exit by using the delete_namespace_subtree
3841 function instead of the delete_namespace_by_owner function used
3843 Bug is a missing namespace lock in the delete_namespace_subtree function.
3844 dana.myers@oracle.com
3846 Fixed several issues and a possible fault with the automatic "serialized"
3847 method support. History: This support changes a method to "serialized" on
3849 fly if the method generates an AE_ALREADY_EXISTS error, indicating the
3850 possibility that it cannot handle reentrancy. This fix repairs a couple
3852 issues seen in the field, especially on machines with many cores:
3854 1) Delete method children only upon the exit of the last thread,
3855 so as to not delete objects out from under other running threads
3856 (and possibly causing a fault.)
3857 2) Set the "serialized" bit for the method only upon the exit of the
3858 Last thread, so as to not cause deadlock when running threads
3860 3) Cleanup the use of the AML "MethodFlags" and internal method flags
3861 so that there is no longer any confusion between the two.
3863 Lin Ming, Bob Moore. Reported by dana.myers@oracle.com.
3865 Debugger: Now lock the namespace for duration of a namespace dump.
3867 issues if the namespace is changing dynamically underneath the debugger.
3868 Especially affects temporary namespace nodes, since the debugger displays
3871 Updated the ordering of include files. The ACPICA headers should appear
3872 before any compiler-specific headers (stdio.h, etc.) so that acenv.h can
3874 any necessary compiler-specific defines, etc. Affects the ACPI-related
3878 Updated all ACPICA copyrights and signons to 2011. Added the 2011
3880 to all module headers and signons, including the Linux header. This
3882 virtually every file in the ACPICA core subsystem, iASL compiler, and all
3885 Added project files for MS Visual Studio 2008 (VC++ 9.0). The original
3886 project files for VC++ 6.0 are now obsolete. New project files can be
3888 under acpica/generate/msvc9. See acpica/generate/msvc9/readme.txt for
3891 Example Code and Data Size: These are the sizes for the OS-independent
3892 acpica.lib produced by the Microsoft Visual C++ 9.0 32-bit compiler. The
3893 debug version of the code includes the debug output trace mechanism and
3895 much larger code and data size.
3897 Previous Release (VC 6.0):
3898 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
3899 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
3900 Current Release (VC 9.0):
3901 Non-Debug Version: 89.7K Code, 23.7K Data, 113.4K Total
3902 Debug Version: 163.9K Code, 67.5K Data, 231.4K Total
3904 2) iASL Compiler/Disassembler and Tools:
3906 iASL: Added generic data types to the Data Table compiler. Add "generic"
3908 types such as UINT32, String, Unicode, etc., to simplify the generation
3910 platform-defined tables such as UEFI. Lin Ming.
3912 iASL: Added listing support for the Data Table Compiler. Adds listing
3914 (-l) to display actual binary output for each line of input code.
3916 ----------------------------------------
3917 09 December 2010. Summary of changes for version 20101209:
3919 1) ACPI CA Core Subsystem:
3921 Completed the major overhaul of the GPE support code that was begun in
3923 2010. Major features include: removal of _PRW execution in ACPICA (host
3924 executes _PRWs anyway), cleanup of "wake" GPE interfaces and processing,
3925 changes to existing interfaces, simplification of GPE handler operation,
3927 a handful of new interfaces:
3933 One new file, evxfgpe.c to consolidate all external GPE interfaces.
3935 See the ACPICA Programmer Reference for full details and programming
3936 information. See the new section 4.4 "General Purpose Event (GPE)
3938 for a full overview, and section 8.7 "ACPI General Purpose Event
3940 for programming details. ACPICA BZ 858,870,877. Matthew Garrett, Lin
3942 Bob Moore, Rafael Wysocki.
3944 Implemented a new GPE feature for Windows compatibility, the "Implicit
3946 GPE Notify". This feature will automatically issue a Notify(2) on a
3948 when a Wake GPE is received if there is no corresponding GPE method or
3949 handler. ACPICA BZ 870.
3951 Fixed a problem with the Scope() operator during table parse and load
3953 During load phase (table load or method execution), the scope operator
3955 not enter the target into the namespace. Instead, it should open a new
3957 at the target location. Linux BZ 19462, ACPICA BZ 882.
3959 Example Code and Data Size: These are the sizes for the OS-independent
3960 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
3961 debug version of the code includes the debug output trace mechanism and
3963 much larger code and data size.
3966 Non-Debug Version: 89.8K Code, 18.9K Data, 108.7K Total
3967 Debug Version: 166.6K Code, 52.1K Data, 218.7K Total
3969 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
3970 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
3972 2) iASL Compiler/Disassembler and Tools:
3974 iASL: Relax the alphanumeric restriction on _CID strings. These strings
3976 "bus-specific" per the ACPI specification, and therefore any characters
3978 acceptable. The only checks that can be performed are for a null string
3980 perhaps for a leading asterisk. ACPICA BZ 886.
3982 iASL: Fixed a problem where a syntax error that caused a premature EOF
3983 condition on the source file emitted a very confusing error message. The
3984 premature EOF is now detected correctly. ACPICA BZ 891.
3986 Disassembler: Decode the AccessSize within a Generic Address Structure
3988 access, word access, etc.) Note, this field does not allow arbitrary bit
3989 access, the size is encoded as 1=byte, 2=word, 3=dword, and 4=qword.
3991 New: AcpiNames utility - Example namespace dump utility. Shows an example
3993 ACPICA configuration for a minimal namespace dump utility. Uses table and
3994 namespace managers, but no AML interpreter. Does not add any
3996 over AcpiExec, it is a subset of AcpiExec. The purpose is to show how to
3997 partition and configure ACPICA. ACPICA BZ 883.
3999 AML Debugger: Increased the debugger buffer size for method return
4001 Was 4K, increased to 16K. Also enhanced error messages for debugger
4003 execution, including the buffer overflow case.
4005 ----------------------------------------
4006 13 October 2010. Summary of changes for version 20101013:
4008 1) ACPI CA Core Subsystem:
4010 Added support to clear the PCIEXP_WAKE event. When clearing ACPI events,
4012 clear the PCIEXP_WAKE_STS bit in the ACPI PM1 Status Register, via
4013 HwClearAcpiStatus. Original change from Colin King. ACPICA BZ 880.
4015 Changed the type of the predefined namespace object _TZ from ThermalZone
4017 Device. This was found to be confusing to the host software that
4019 the various thermal zones, since _TZ is not really a ThermalZone.
4022 Notify() can still be performed on it. ACPICA BZ 876. Suggestion from Rui
4025 Added Windows Vista SP2 to the list of supported _OSI strings. The actual
4026 string is "Windows 2006 SP2".
4028 Eliminated duplicate code in AcpiUtExecute* functions. Now that the
4030 code automatically repairs _HID-related strings, this type of code is no
4031 longer needed in Execute_HID, Execute_CID, and Execute_UID. ACPICA BZ
4034 Example Code and Data Size: These are the sizes for the OS-independent
4035 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4036 debug version of the code includes the debug output trace mechanism and
4038 much larger code and data size.
4041 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
4042 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
4044 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
4045 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
4047 2) iASL Compiler/Disassembler and Tools:
4049 iASL: Implemented additional compile-time validation for _HID strings.
4051 non-hex prefix (such as "PNP" or "ACPI") must be uppercase, and the
4054 the string must be exactly seven or eight characters. For both _HID and
4056 strings, all characters must be alphanumeric. ACPICA BZ 874.
4058 iASL: Allow certain "null" resource descriptors. Some BIOS code creates
4059 descriptors that are mostly or all zeros, with the expectation that they
4061 be filled in at runtime. iASL now allows this as long as there is a
4063 tag" (name) associated with the descriptor, which gives the ASL a handle
4064 needed to modify the descriptor. ACPICA BZ 873.
4066 Added single-thread support to the generic Unix application OSL.
4068 for iASL support, this change removes the use of semaphores in the
4070 threaded ACPICA tools/applications - increasing performance. The
4071 _MULTI_THREADED option was replaced by the (reverse) ACPI_SINGLE_THREADED
4072 option. ACPICA BZ 879.
4074 AcpiExec: several fixes for the 64-bit version. Adds XSDT support and
4076 for 64-bit DSDT/FACS addresses in the FADT. Lin Ming.
4078 iASL: Moved all compiler messages to a new file, aslmessages.h.
4080 ----------------------------------------
4081 15 September 2010. Summary of changes for version 20100915:
4083 1) ACPI CA Core Subsystem:
4085 Removed the AcpiOsDerivePciId OSL interface. The various host
4087 of this function were not OS-dependent and are now obsolete and can be
4088 removed from all host OSLs. This function has been replaced by
4089 AcpiHwDerivePciId, which is now part of the ACPICA core code.
4090 AcpiHwDerivePciId has been implemented without recursion. Adds one new
4091 module, hwpci.c. ACPICA BZ 857.
4093 Implemented a dynamic repair for _HID and _CID strings. The following
4094 problems are now repaired at runtime: 1) Remove a leading asterisk in the
4095 string, and 2) the entire string is uppercased. Both repairs are in
4096 accordance with the ACPI specification and will simplify host driver
4100 The ACPI_THREAD_ID type is no longer configurable, internally it is now
4101 always UINT64. This simplifies the ACPICA code, especially any printf
4103 UINT64 is the only common data type for all thread_id types across all
4104 operating systems. It is now up to the host OSL to cast the native
4106 type to UINT64 before returning the value to ACPICA (via
4108 Lin Ming, Bob Moore.
4110 Added the ACPI_INLINE type to enhance the ACPICA configuration. The
4112 keyword is not standard across compilers, and this type allows inline to
4114 configured on a per-compiler basis. Lin Ming.
4116 Made the system global AcpiGbl_SystemAwakeAndRunning publically
4118 Added an extern for this boolean in acpixf.h. Some hosts utilize this
4120 during suspend/restore operations. ACPICA BZ 869.
4122 All code that implements error/warning messages with the "ACPI:" prefix
4124 been moved to a new module, utxferror.c.
4126 The UINT64_OVERLAY was moved to utmath.c, which is the only module where
4128 is used. ACPICA BZ 829. Lin Ming, Bob Moore.
4130 Example Code and Data Size: These are the sizes for the OS-independent
4131 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4132 debug version of the code includes the debug output trace mechanism and
4134 much larger code and data size.
4137 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
4138 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
4140 Non-Debug Version: 89.9K Code, 19.0K Data, 108.9K Total
4141 Debug Version: 166.3K Code, 52.1K Data, 218.4K Total
4143 2) iASL Compiler/Disassembler and Tools:
4145 iASL/Disassembler: Write ACPI errors to stderr instead of the output
4147 This keeps the output files free of random error messages that may
4149 from within the namespace/interpreter code. Used this opportunity to
4151 all ACPI:-style messages into a single new module, utxferror.c. ACPICA BZ
4152 866. Lin Ming, Bob Moore.
4154 Tools: update some printfs for ansi warnings on size_t. Handle width
4156 of size_t on 32-bit versus 64-bit generations. Lin Ming.
4158 ----------------------------------------
4159 06 August 2010. Summary of changes for version 20100806:
4161 1) ACPI CA Core Subsystem:
4163 Designed and implemented a new host interface to the _OSI support code.
4165 will allow the host to dynamically add or remove multiple _OSI strings,
4167 well as install an optional handler that is called for each _OSI
4169 Also added a new AML debugger command, 'osi' to display and modify the
4171 _OSI string table, and test support in the AcpiExec utility. See the
4173 reference manual for full details. Lin Ming, Bob Moore. ACPICA BZ 836.
4175 AcpiInstallInterface - Add an _OSI string.
4176 AcpiRemoveInterface - Delete an _OSI string.
4177 AcpiInstallInterfaceHandler - Install optional _OSI handler.
4179 AcpiOsValidateInterface - no longer used.
4181 source/components/utilities/utosi.c
4183 Re-introduced the support to enable multi-byte transfers for Embedded
4184 Controller (EC) operation regions. A reported problem was found to be a
4186 in the host OS, not in the multi-byte support. Previously, the maximum
4188 size passed to the EC operation region handler was a single byte. There
4190 often EC Fields larger than one byte that need to be transferred, and it
4192 useful for the EC driver to lock these as a single transaction. This
4194 enables single transfers larger than 8 bits. This effectively changes the
4195 access to the EC space from ByteAcc to AnyAcc, and will probably require
4196 changes to the host OS Embedded Controller driver to enable 16/32/64/256-
4198 transfers in addition to 8-bit transfers. Alexey Starikovskiy, Lin Ming.
4200 Fixed a problem with the prototype for AcpiOsReadPciConfiguration. The
4201 prototype in acpiosxf.h had the output value pointer as a (void *).
4202 It should be a (UINT64 *). This may affect some host OSL code.
4204 Fixed a couple problems with the recently modified Linux makefiles for
4206 and AcpiExec. These new makefiles place the generated object files in the
4207 local directory so that there can be no collisions between the files that
4209 shared between them that are compiled with different options.
4211 Example Code and Data Size: These are the sizes for the OS-independent
4212 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4213 debug version of the code includes the debug output trace mechanism and
4215 much larger code and data size.
4218 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
4219 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
4221 Non-Debug Version: 89.1K Code, 19.0K Data, 108.1K Total
4222 Debug Version: 165.1K Code, 51.9K Data, 217.0K Total
4224 2) iASL Compiler/Disassembler and Tools:
4226 iASL/Disassembler: Added a new option (-da, "disassemble all") to load
4228 namespace from and disassemble an entire group of AML files. Useful for
4229 loading all of the AML tables for a given machine (DSDT, SSDT1...SSDTn)
4231 disassembling with one simple command. ACPICA BZ 865. Lin Ming.
4233 iASL: Allow multiple invocations of -e option. This change allows
4235 uses of -e on the command line: "-e ssdt1.dat -e ssdt2.dat". ACPICA BZ
4239 ----------------------------------------
4240 02 July 2010. Summary of changes for version 20100702:
4242 1) ACPI CA Core Subsystem:
4244 Implemented several updates to the recently added GPE reference count
4245 support. The model for "wake" GPEs is changing to give the host OS
4247 control of these GPEs. Eventually, the ACPICA core will not execute any
4249 methods, since the host already must execute them. Also, additional
4251 were made to help ensure that the reference counts are kept in proper
4252 synchronization with reality. Rafael J. Wysocki.
4254 1) Ensure that GPEs are not enabled twice during initialization.
4255 2) Ensure that GPE enable masks stay in sync with the reference count.
4256 3) Do not inadvertently enable GPEs when writing GPE registers.
4257 4) Remove the internal wake reference counter and add new AcpiGpeWakeup
4258 interface. This interface will set or clear individual GPEs for wakeup.
4259 5) Remove GpeType argument from AcpiEnable and AcpiDisable. These
4261 are now used for "runtime" GPEs only.
4263 Changed the behavior of the GPE install/remove handler interfaces. The
4266 no longer disabled during this process, as it was found to cause problems
4268 some machines. Rafael J. Wysocki.
4270 Reverted a change introduced in version 20100528 to enable Embedded
4271 Controller multi-byte transfers. This change was found to cause problems
4273 Index Fields and possibly Bank Fields. It will be reintroduced when these
4274 problems have been resolved.
4276 Fixed a problem with references to Alias objects within Package Objects.
4278 reference to an Alias within the definition of a Package was not always
4279 resolved properly. Aliases to objects like Processors, Thermal zones,
4281 were resolved to the actual object instead of a reference to the object
4284 should be. Package objects are only allowed to contain integer, string,
4285 buffer, package, and reference objects. Redhat bugzilla 608648.
4287 Example Code and Data Size: These are the sizes for the OS-independent
4288 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4289 debug version of the code includes the debug output trace mechanism and
4291 much larger code and data size.
4294 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
4295 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
4297 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
4298 Debug Version: 164.0K Code, 51.5K Data, 215.5K Total
4300 2) iASL Compiler/Disassembler and Tools:
4302 iASL: Implemented a new compiler subsystem to allow definition and
4303 compilation of the non-AML ACPI tables such as FADT, MADT, SRAT, etc.
4305 are called "ACPI Data Tables", and the new compiler is the "Data Table
4306 Compiler". This compiler is intended to simplify the existing error-prone
4307 process of creating these tables for the BIOS, as well as allowing the
4308 disassembly, modification, recompilation, and override of existing ACPI
4310 tables. See the iASL User Guide for detailed information.
4312 iASL: Implemented a new Template Generator option in support of the new
4314 Table Compiler. This option will create examples of all known ACPI tables
4315 that can be used as the basis for table development. See the iASL
4316 documentation and the -T option.
4318 Disassembler and headers: Added support for the WDDT ACPI table (Watchdog
4321 Updated the Linux makefiles for iASL and AcpiExec to place the generated
4322 object files in the local directory so that there can be no collisions
4323 between the shared files between them that are generated with different
4326 Added support for Mac OS X in the Unix OSL used for iASL and AcpiExec.
4328 the #define __APPLE__ to enable this support.
4330 ----------------------------------------
4331 28 May 2010. Summary of changes for version 20100528:
4333 Note: The ACPI 4.0a specification was released on April 5, 2010 and is
4334 available at www.acpi.info. This is primarily an errata release.
4336 1) ACPI CA Core Subsystem:
4338 Undefined ACPI tables: We are looking for the definitions for the
4340 ACPI tables that have been seen in the field: ATKG, IEIT, GSCI.
4342 Implemented support to enable multi-byte transfers for Embedded
4344 (EC) operation regions. Previously, the maximum data size passed to the
4346 operation region handler was a single byte. There are often EC Fields
4348 than one byte that need to be transferred, and it is useful for the EC
4350 to lock these as a single transaction. This change enables single
4352 larger than 8 bits. This effectively changes the access to the EC space
4354 ByteAcc to AnyAcc, and will probably require changes to the host OS
4356 Controller driver to enable 16/32/64/256-bit transfers in addition to 8-
4358 transfers. Alexey Starikovskiy, Lin Ming
4360 Implemented a performance enhancement for namespace search and access.
4362 change enhances the performance of namespace searches and walks by adding
4364 backpointer to the parent in each namespace node. On large namespaces,
4366 change can improve overall ACPI performance by up to 9X. Adding a pointer
4368 each namespace node increases the overall size of the internal namespace
4370 about 5%, since each namespace entry usually consists of both a namespace
4371 node and an ACPI operand object. However, this is the first growth of the
4372 namespace in ten years. ACPICA bugzilla 817. Alexey Starikovskiy.
4374 Implemented a performance optimization that reduces the number of
4376 walks. On control method exit, only walk the namespace if the method is
4378 to have created namespace objects outside of its local scope. Previously,
4380 entire namespace was traversed on each control method exit. This change
4382 improve overall ACPI performance by up to 3X. Alexey Starikovskiy, Bob
4385 Added support to truncate I/O addresses to 16 bits for Windows
4387 Some ASL code has been seen in the field that inadvertently has bits set
4388 above bit 15. This feature is optional and is enabled if the BIOS
4390 any Windows OSI strings. It can also be enabled by the host OS. Matthew
4393 Added support to limit the maximum time for the ASL Sleep() operator. To
4394 prevent accidental deep sleeps, limit the maximum time that Sleep() will
4395 actually sleep. Configurable, the default maximum is two seconds. ACPICA
4398 Added run-time validation support for the _WDG and_WED Microsoft
4400 methods. These objects are defined by "Windows Instrumentation", and are
4402 part of the ACPI spec. ACPICA BZ 860.
4404 Expanded all statistic counters used during namespace and device
4405 initialization from 16 to 32 bits in order to support very large
4408 Replaced all instances of %d in printf format specifiers with %u since
4410 all integers in ACPICA are unsigned.
4412 Fixed the exception namestring for AE_WAKE_ONLY_GPE. Was incorrectly
4416 Example Code and Data Size: These are the sizes for the OS-independent
4417 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4418 debug version of the code includes the debug output trace mechanism and
4420 much larger code and data size.
4423 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
4424 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
4426 Non-Debug Version: 88.3K Code, 18.8K Data, 107.1K Total
4427 Debug Version: 164.1K Code, 51.5K Data, 215.6K Total
4429 2) iASL Compiler/Disassembler and Tools:
4431 iASL: Added compiler support for the _WDG and_WED Microsoft predefined
4432 methods. These objects are defined by "Windows Instrumentation", and are
4434 part of the ACPI spec. ACPICA BZ 860.
4436 AcpiExec: added option to disable the memory tracking mechanism. The -dt
4437 option will disable the tracking mechanism, which improves performance
4440 AcpiExec: Restructured the command line options into -d (disable) and -e
4443 ----------------------------------------
4444 28 April 2010. Summary of changes for version 20100428:
4446 1) ACPI CA Core Subsystem:
4448 Implemented GPE support for dynamically loaded ACPI tables. For all GPEs,
4449 including FADT-based and GPE Block Devices, execute any _PRW methods in
4451 new table, and process any _Lxx/_Exx GPE methods in the new table. Any
4452 runtime GPE that is referenced by an _Lxx/_Exx method in the new table is
4453 immediately enabled. Handles the FADT-defined GPEs as well as GPE Block
4454 Devices. Provides compatibility with other ACPI implementations. Two new
4455 files added, evgpeinit.c and evgpeutil.c. ACPICA BZ 833. Lin Ming, Bob
4458 Fixed a regression introduced in version 20100331 within the table
4460 where initial table loading could fail. This was introduced in the fix
4462 AcpiReallocateRootTable. Also, renamed some of fields in the table
4464 data structures to clarify their meaning and use.
4466 Fixed a possible allocation overrun during internal object copy in
4467 AcpiUtCopySimpleObject. The original code did not correctly handle the
4469 where the object to be copied was a namespace node. Lin Ming. ACPICA BZ
4472 Updated the allocation dump routine, AcpiUtDumpAllocation and fixed a
4473 possible access beyond end-of-allocation. Also, now fully validate
4475 (size and type) before output. Lin Ming, Bob Moore. ACPICA BZ 847
4477 Example Code and Data Size: These are the sizes for the OS-independent
4478 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4479 debug version of the code includes the debug output trace mechanism and
4481 much larger code and data size.
4484 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
4485 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
4487 Non-Debug Version: 88.4K Code, 18.8K Data, 107.2K Total
4488 Debug Version: 164.2K Code, 51.5K Data, 215.7K Total
4490 2) iASL Compiler/Disassembler and Tools:
4492 iASL: Implemented Min/Max/Len/Gran validation for address resource
4493 descriptors. This change implements validation for the address fields
4495 are common to all address-type resource descriptors. These checks are
4496 implemented: Checks for valid Min/Max, length within the Min/Max window,
4497 valid granularity, Min/Max a multiple of granularity, and _MIF/_MAF as
4499 table 6-40 in the ACPI 4.0a specification. Also split the large
4501 and aslrestype2.c files into five new files. ACPICA BZ 840.
4503 iASL: Added support for the _Wxx predefined names. This support was
4505 and these names were not recognized by the compiler as valid predefined
4506 names. ACPICA BZ 851.
4508 iASL: Added an error for all predefined names that are defined to return
4510 value and thus must be implemented as Control Methods. These include all
4512 the _Lxx, _Exx, _Wxx, and _Qxx names, as well as some other miscellaneous
4513 names such as _DIS, _INI, _IRC, _OFF, _ON, and _PSx. ACPICA BZ 850, 856.
4515 iASL: Implemented the -ts option to emit hex AML data in ASL format, as
4517 ASL Buffer. Allows ACPI tables to be easily included within ASL files, to
4519 dynamically loaded via the Load() operator. Also cleaned up output for
4522 ta and -tc options. ACPICA BZ 853.
4524 Tests: Added a new file with examples of extended iASL error checking.
4525 Demonstrates the advanced error checking ability of the iASL compiler.
4526 Available at tests/misc/badcode.asl.
4528 ----------------------------------------
4529 31 March 2010. Summary of changes for version 20100331:
4531 1) ACPI CA Core Subsystem:
4533 Completed a major update for the GPE support in order to improve support
4535 shared GPEs and to simplify both host OS and ACPICA code. Added a
4537 count mechanism to support shared GPEs that require multiple device
4539 Several external interfaces have changed. One external interface has been
4540 removed. One new external interface was added. Most of the GPE external
4541 interfaces now use the GPE spinlock instead of the events mutex (and the
4542 Flags parameter for many GPE interfaces has been removed.) See the
4544 ACPICA Programmer Reference for details. Matthew Garrett, Bob Moore,
4546 Wysocki. ACPICA BZ 831.
4549 AcpiEnableGpe, AcpiDisableGpe, AcpiClearGpe, AcpiGetGpeStatus
4555 Implemented write support for DataTable operation regions. These regions
4557 defined via the DataTableRegion() operator. Previously, only read support
4559 implemented. The ACPI specification allows DataTableRegions to be
4563 Implemented a new subsystem option to force a copy of the DSDT to local
4564 memory. Optionally copy the entire DSDT to local memory (instead of
4566 mapping it.) There are some (albeit very rare) BIOSs that corrupt or
4568 the original DSDT, creating the need for this option. Default is FALSE,
4572 Implemented detection of a corrupted or replaced DSDT. This change adds
4573 support to detect a DSDT that has been corrupted and/or replaced from
4575 the OS (by firmware). This is typically catastrophic for the system, but
4577 been seen on some machines. Once this problem has been detected, the DSDT
4578 copy option can be enabled via system configuration. Lin Ming, Bob Moore.
4580 Fixed two problems with AcpiReallocateRootTable during the root table
4582 When copying the root table to the new allocation, the length used was
4583 incorrect. The new size was used instead of the current table size,
4585 too much data was copied. Also, the count of available slots for ACPI
4587 was not set correctly. Alexey Starikovskiy, Bob Moore.
4589 Example Code and Data Size: These are the sizes for the OS-independent
4590 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4591 debug version of the code includes the debug output trace mechanism and
4593 much larger code and data size.
4596 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
4597 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
4599 Non-Debug Version: 87.9K Code, 18.6K Data, 106.5K Total
4600 Debug Version: 163.5K Code, 51.3K Data, 214.8K Total
4602 2) iASL Compiler/Disassembler and Tools:
4604 iASL: Implement limited typechecking for values returned from predefined
4605 control methods. The type of any returned static (unnamed) object is now
4606 validated. For example, Return(1). ACPICA BZ 786.
4608 iASL: Fixed a predefined name object verification regression. Fixes a
4610 introduced in version 20100304. An error is incorrectly generated if a
4611 predefined name is declared as a static named object with a value defined
4612 using the keywords "Zero", "One", or "Ones". Lin Ming.
4614 iASL: Added Windows 7 support for the -g option (get local ACPI tables)
4616 reducing the requested registry access rights. ACPICA BZ 842.
4618 Disassembler: fixed a possible fault when generating External()
4620 Introduced in commit ae7d6fd: Properly handle externals with parent-
4622 (carat). Fixes a string length allocation calculation. Lin Ming.
4624 ----------------------------------------
4625 04 March 2010. Summary of changes for version 20100304:
4627 1) ACPI CA Core Subsystem:
4629 Fixed a possible problem with the AML Mutex handling function
4630 AcpiExReleaseMutex where the function could fault under the very rare
4631 condition when the interpreter has blocked, the interpreter lock is
4633 the interpreter is then reentered via the same thread, and attempts to
4634 acquire an AML mutex that was previously acquired. FreeBSD report 140979.
4638 Implemented additional configuration support for the AML "Debug Object".
4639 Output from the debug object can now be enabled via a global variable,
4640 AcpiGbl_EnableAmlDebugObject. This will assist with remote machine
4642 This debug output is now available in the release version of ACPICA
4644 of just the debug version. Also, the entire debug output module can now
4646 configured out of the ACPICA build if desired. One new file added,
4647 executer/exdebug.c. Lin Ming, Bob Moore.
4649 Added header support for the ACPI MCHI table (Management Controller Host
4650 Interface Table). This table was added in ACPI 4.0, but the defining
4652 has only recently become available.
4654 Standardized output of integer values for ACPICA warnings/errors. Always
4656 0x prefix for hex output, always use %u for unsigned integer decimal
4658 Affects ACPI_INFO, ACPI_ERROR, ACPI_EXCEPTION, and ACPI_WARNING (about
4660 invocations.) These invocations were converted from the original
4661 ACPI_DEBUG_PRINT invocations and were not consistent. ACPICA BZ 835.
4663 Example Code and Data Size: These are the sizes for the OS-independent
4664 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4665 debug version of the code includes the debug output trace mechanism and
4667 much larger code and data size.
4670 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
4671 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
4673 Non-Debug Version: 87.5K Code, 18.4K Data, 105.9K Total
4674 Debug Version: 163.4K Code, 51.1K Data, 214.5K Total
4676 2) iASL Compiler/Disassembler and Tools:
4678 iASL: Implemented typechecking support for static (non-control method)
4679 predefined named objects that are declared with the Name() operator. For
4680 example, the type of this object is now validated to be of type Integer:
4681 Name(_BBN, 1). This change migrates the compiler to using the core
4683 name table instead of maintaining a local version. Added a new file,
4684 aslpredef.c. ACPICA BZ 832.
4686 Disassembler: Added support for the ACPI 4.0 MCHI table.
4688 ----------------------------------------
4689 21 January 2010. Summary of changes for version 20100121:
4691 1) ACPI CA Core Subsystem:
4693 Added the 2010 copyright to all module headers and signons. This affects
4694 virtually every file in the ACPICA core subsystem, the iASL compiler, the
4695 tools/utilities, and the test suites.
4697 Implemented a change to the AcpiGetDevices interface to eliminate
4699 invocations of the _STA method. In the case where a specific _HID is
4700 requested, do not run _STA until a _HID match is found. This eliminates
4701 potentially dozens of _STA calls during a search for a particular
4703 which in turn can improve boot times. ACPICA BZ 828. Lin Ming.
4705 Implemented an additional repair for predefined method return values.
4707 to repair unexpected NULL elements within returned Package objects.
4710 Integer of value zero, a NULL String, or a zero-length Buffer as
4712 ACPICA BZ 818. Lin Ming, Bob Moore.
4714 Removed the obsolete ACPI_INTEGER data type. This type was introduced as
4716 code was migrated from ACPI 1.0 (with 32-bit AML integers) to ACPI 2.0
4718 64-bit AML integers). It is now obsolete and this change removes it from
4720 ACPICA code base, replaced by UINT64. The original typedef has been
4722 for now for compatibility with existing device driver code. ACPICA BZ
4725 Removed the unused UINT32_STRUCT type, and the obsolete Integer64 field
4727 the parse tree object.
4729 Added additional warning options for the gcc-4 generation. Updated the
4731 accordingly. This includes some code restructuring to eliminate
4733 code, elimination of some gotos, elimination of unused return values,
4735 additional casting, and removal of redundant declarations.
4737 Example Code and Data Size: These are the sizes for the OS-independent
4738 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4739 debug version of the code includes the debug output trace mechanism and
4741 much larger code and data size.
4744 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
4745 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
4747 Non-Debug Version: 87.1K Code, 18.0K Data, 105.1K Total
4748 Debug Version: 163.5K Code, 50.9K Data, 214.4K Total
4750 2) iASL Compiler/Disassembler and Tools:
4752 No functional changes for this release.
4754 ----------------------------------------
4755 14 December 2009. Summary of changes for version 20091214:
4757 1) ACPI CA Core Subsystem:
4759 Enhanced automatic data type conversions for predefined name repairs.
4761 change expands the automatic repairs/conversions for predefined name
4763 values to make Integers, Strings, and Buffers fully interchangeable.
4766 Buffer can be converted to a Package of Integers if necessary. The
4768 module was completely restructured. Lin Ming, Bob Moore.
4770 Implemented automatic removal of null package elements during predefined
4772 repairs. This change will automatically remove embedded and trailing NULL
4773 package elements from returned package objects that are defined to
4776 variable number of sub-packages. The driver is then presented with a
4778 with no null elements to deal with. ACPICA BZ 819.
4780 Implemented a repair for the predefined _FDE and _GTM names. The expected
4781 return value for both names is a Buffer of 5 DWORDs. This repair fixes
4783 possible problems (both seen in the field), where a package of integers
4785 returned, or a buffer of BYTEs is returned. With assistance from Jung-uk
4788 Implemented additional module-level code support. This change will
4790 execute module-level code that is not at the root of the namespace (under
4792 Device object, etc.). Now executes the code within the current scope
4794 of the root. ACPICA BZ 762. Lin Ming.
4796 Fixed possible mutex acquisition errors when running _REG methods. Fixes
4798 problem where mutex errors can occur when running a _REG method that is
4800 the same scope as a method-defined operation region or an operation
4802 under a module-level IF block. This type of code is rare, so the problem
4804 not been seen before. ACPICA BZ 826. Lin Ming, Bob Moore.
4806 Fixed a possible memory leak during module-level code execution. An
4808 could be leaked for each block of executed module-level code if the
4809 interpreter slack mode is enabled This change deletes any implicitly
4811 object from the module-level code block. Lin Ming.
4813 Removed messages for successful predefined repair(s). The repair
4815 was considered too wordy. Now, messages are only unconditionally emitted
4817 the return object cannot be repaired. Existing messages for successful
4818 repairs were converted to ACPI_DEBUG_PRINT messages for now. ACPICA BZ
4821 Example Code and Data Size: These are the sizes for the OS-independent
4822 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4823 debug version of the code includes the debug output trace mechanism and
4825 much larger code and data size.
4828 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
4829 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
4831 Non-Debug Version: 87.0K Code, 18.0K Data, 105.0K Total
4832 Debug Version: 163.4K Code, 50.8K Data, 214.2K Total
4834 2) iASL Compiler/Disassembler and Tools:
4836 iASL: Fixed a regression introduced in 20091112 where intermediate .SRC
4838 were no longer automatically removed at the termination of the compile.
4840 acpiexec: Implemented the -f option to specify default region fill value.
4841 This option specifies the value used to initialize buffers that simulate
4842 operation regions. Default value is zero. Useful for debugging problems
4844 depend on a specific initial value for a region or field.
4846 ----------------------------------------
4847 12 November 2009. Summary of changes for version 20091112:
4849 1) ACPI CA Core Subsystem:
4851 Implemented a post-order callback to AcpiWalkNamespace. The existing
4852 interface only has a pre-order callback. This change adds an additional
4853 parameter for a post-order callback which will be more useful for bus
4855 ACPICA BZ 779. Lin Ming. Updated the ACPICA Programmer Reference.
4857 Modified the behavior of the operation region memory mapping cache for
4858 SystemMemory. Ensure that the memory mappings created for operation
4860 do not cross 4K page boundaries. Crossing a page boundary while mapping
4861 regions can cause kernel warnings on some hosts if the pages have
4863 attributes. Such regions are probably BIOS bugs, and this is the
4865 Linux BZ 14445. Lin Ming.
4867 Implemented an automatic repair for predefined methods that must return
4868 sorted lists. This change will repair (by sorting) packages returned by
4870 _PSS, and _TSS. Drivers can now assume that the packages are correctly
4872 and do not contain NULL package elements. Adds one new file,
4873 namespace/nsrepair2.c. ACPICA BZ 784. Lin Ming, Bob Moore.
4875 Fixed a possible fault during predefined name validation if a return
4877 object contains NULL elements. Also adds a warning if a NULL element is
4878 followed by any non-null elements. ACPICA BZ 813, 814. Future enhancement
4880 include repair or removal of all such NULL elements where possible.
4882 Implemented additional module-level executable AML code support. This
4884 will execute module-level code that is not at the root of the namespace
4885 (under a Device object, etc.) at table load time. Module-level executable
4887 code has been illegal since ACPI 2.0. ACPICA BZ 762. Lin Ming.
4889 Implemented a new internal function to create Integer objects. This
4891 simplifies miscellaneous object creation code. ACPICA BZ 823.
4893 Reduced the severity of predefined repair messages, Warning to Info.
4895 the object was successfully repaired, a warning is too severe. Reduced to
4897 info message for now. These messages may eventually be changed to debug-
4901 Example Code and Data Size: These are the sizes for the OS-independent
4902 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4903 debug version of the code includes the debug output trace mechanism and
4905 much larger code and data size.
4908 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
4909 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
4911 Non-Debug Version: 86.6K Code, 18.2K Data, 104.8K Total
4912 Debug Version: 162.7K Code, 50.8K Data, 213.5K Total
4914 2) iASL Compiler/Disassembler and Tools:
4916 iASL: Implemented Switch() with While(1) so that Break works correctly.
4918 change correctly implements the Switch operator with a surrounding
4920 so that the Break operator works as expected. ACPICA BZ 461. Lin Ming.
4922 iASL: Added a message if a package initializer list is shorter than
4924 length. Adds a new remark for a Package() declaration if an initializer
4926 exists, but is shorter than the declared length of the package. Although
4927 technically legal, this is probably a coding error and it is seen in the
4928 field. ACPICA BZ 815. Lin Ming, Bob Moore.
4930 iASL: Fixed a problem where the compiler could fault after the maximum
4932 of errors was reached (200).
4934 acpixtract: Fixed a possible warning for pointer cast if the compiler
4936 level set very high.
4938 ----------------------------------------
4939 13 October 2009. Summary of changes for version 20091013:
4941 1) ACPI CA Core Subsystem:
4943 Fixed a problem where an Operation Region _REG method could be executed
4945 than once. If a custom address space handler is installed by the host
4947 the "initialize operation regions" phase of the ACPICA initialization,
4949 _REG methods for that address space could be executed twice. This change
4950 fixes the problem. ACPICA BZ 427. Lin Ming.
4952 Fixed a possible memory leak for the Scope() ASL operator. When the exact
4953 invocation of "Scope(\)" is executed (change scope to root), one internal
4954 operand object was leaked. Lin Ming.
4956 Implemented a run-time repair for the _MAT predefined method. If the _MAT
4957 return value is defined as a Field object in the AML, and the field
4958 size is less than or equal to the default width of an integer (32 or
4960 can incorrectly return an Integer instead of a Buffer. ACPICA now
4961 automatically repairs this problem. ACPICA BZ 810.
4963 Implemented a run-time repair for the _BIF and _BIX predefined methods.
4965 "OEM Information" field is often incorrectly returned as an Integer with
4966 value zero if the field is not supported by the platform. This is due to
4968 ambiguity in the ACPI specification. The field should always be a string.
4969 ACPICA now automatically repairs this problem by returning a NULL string
4970 within the returned Package. ACPICA BZ 807.
4972 Example Code and Data Size: These are the sizes for the OS-independent
4973 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
4974 debug version of the code includes the debug output trace mechanism and
4976 much larger code and data size.
4979 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
4980 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
4982 Non-Debug Version: 85.8K Code, 18.0K Data, 103.8K Total
4983 Debug Version: 161.8K Code, 50.6K Data, 212.4K Total
4985 2) iASL Compiler/Disassembler and Tools:
4987 Disassembler: Fixed a problem where references to external symbols that
4988 contained one or more parent-prefixes (carats) were not handled
4990 possibly causing a fault. ACPICA BZ 806. Lin Ming.
4992 Disassembler: Restructured the code so that all functions that handle
4993 external symbols are in a single module. One new file is added,
4996 AML Debugger: Added a max count argument for the Batch command (which
4997 executes multiple predefined methods within the namespace.)
4999 iASL: Updated the compiler documentation (User Reference.) Available at
5000 http://www.acpica.org/documentation/. ACPICA BZ 750.
5002 AcpiXtract: Updated for Lint and other formatting changes. Close all open
5005 ----------------------------------------
5006 03 September 2009. Summary of changes for version 20090903:
5008 1) ACPI CA Core Subsystem:
5010 For Windows Vista compatibility, added the automatic execution of an _INI
5011 method located at the namespace root (\_INI). This method is executed at
5012 table load time. This support is in addition to the automatic execution
5014 \_SB._INI. Lin Ming.
5016 Fixed a possible memory leak in the interpreter for AML package objects
5018 the package initializer list is longer than the defined size of the
5020 This apparently can only happen if the BIOS changes the package size on
5022 fly (seen in a _PSS object), as ASL compilers do not allow this. The
5023 interpreter will truncate the package to the defined size (and issue an
5025 message), but previously could leave the extra objects undeleted if they
5027 pre-created during the argument processing (such is the case if the
5029 consists of a number of sub-packages as in the _PSS.) ACPICA BZ 805.
5031 Fixed a problem seen when a Buffer or String is stored to itself via ASL.
5032 This has been reported in the field. Previously, ACPICA would zero out
5034 buffer/string. Now, the operation is treated as a noop. Provides Windows
5035 compatibility. ACPICA BZ 803. Lin Ming.
5037 Removed an extraneous error message for ASL constructs of the form
5038 Store(LocalX,LocalX) when LocalX is uninitialized. These curious
5040 are seen in many BIOSs and are once again treated as NOOPs and no error
5042 emitted when they are encountered. ACPICA BZ 785.
5044 Fixed an extraneous warning message if a _DSM reserved method returns a
5045 Package object. _DSM can return any type of object, so validation on the
5046 return type cannot be performed. ACPICA BZ 802.
5048 Example Code and Data Size: These are the sizes for the OS-independent
5049 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5050 debug version of the code includes the debug output trace mechanism and
5052 much larger code and data size.
5055 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
5056 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
5058 Non-Debug Version: 85.6K Code, 18.0K Data, 103.6K Total
5059 Debug Version: 161.7K Code, 50.9K Data, 212.6K Total
5061 2) iASL Compiler/Disassembler and Tools:
5063 iASL: Fixed a problem with the use of the Alias operator and Resource
5064 Templates. The correct alias is now constructed and no error is emitted.
5067 iASL: Implemented the -I option to specify additional search directories
5069 include files. Allows multiple additional search paths for include files.
5070 Directories are searched in the order specified on the command line
5072 the local directory is searched.) ACPICA BZ 800.
5074 iASL: Fixed a problem where the full pathname for include files was not
5075 emitted for warnings/errors. This caused the IDE support to not work
5076 properly. ACPICA BZ 765.
5078 iASL: Implemented the -@ option to specify a Windows-style response file
5079 containing additional command line options. ACPICA BZ 801.
5081 AcpiExec: Added support to load multiple AML files simultaneously (such
5084 DSDT and multiple SSDTs). Also added support for wildcards within the AML
5085 pathname. These features allow all machine tables to be easily loaded and
5086 debugged together. ACPICA BZ 804.
5088 Disassembler: Added missing support for disassembly of HEST table Error
5092 ----------------------------------------
5093 30 July 2009. Summary of changes for version 20090730:
5095 The ACPI 4.0 implementation for ACPICA is complete with this release.
5097 1) ACPI CA Core Subsystem:
5099 ACPI 4.0: Added header file support for all new and changed ACPI tables.
5100 Completely new tables are: IBFT, IVRS, MSCT, and WAET. Tables that are
5102 for ACPI 4.0, but have previously been supported in ACPICA are: CPEP,
5104 EINJ, ERST, and HEST. Other newly supported tables are: UEFI and WDAT.
5106 have been some ACPI 4.0 changes to other existing tables. Split the large
5107 actbl1.h header into the existing actbl2.h header. ACPICA BZ 774.
5109 ACPI 4.0: Implemented predefined name validation for all new names. There
5111 31 new names in ACPI 4.0. The predefined validation module was split into
5113 files. The new file is namespace/nsrepair.c. ACPICA BZ 770.
5115 Implemented support for so-called "module-level executable code". This is
5116 executable AML code that exists outside of any control method and is
5118 to be executed at table load time. Although illegal since ACPI 2.0, this
5120 of code still exists and is apparently still being created. Blocks of
5122 code are now detected and executed as intended. Currently, the code
5124 must exist under either an If, Else, or While construct; these are the
5125 typical cases seen in the field. ACPICA BZ 762. Lin Ming.
5127 Implemented an automatic dynamic repair for predefined names that return
5128 nested Package objects. This applies to predefined names that are defined
5130 return a variable-length Package of sub-packages. If the number of sub-
5131 packages is one, BIOS code is occasionally seen that creates a simple
5133 package with no sub-packages. This code attempts to fix the problem by
5134 wrapping a new package object around the existing package. These methods
5136 be repaired: _ALR, _CSD, _HPX, _MLS, _PRT, _PSS, _TRT, and _TSS. ACPICA
5140 Fixed a regression introduced in 20090625 for the AcpiGetDevices
5142 The _HID/_CID matching was broken and no longer matched IDs correctly.
5146 Fixed a problem with AcpiReset where the reset would silently fail if the
5147 register was one of the protected I/O ports. AcpiReset now bypasses the
5149 validation mechanism. This may eventually be driven into the
5153 Fixed a regression related to the recent update of the AcpiRead/Write
5154 interfaces. A sleep/suspend could fail if the optional PM2 Control
5156 does not exist during an attempt to write the Bus Master Arbitration bit.
5157 (However, some hosts already delete the code that writes this bit, and
5159 code may in fact be obsolete at this date.) ACPICA BZ 799.
5161 Fixed a problem where AcpiTerminate could fault if inadvertently called
5163 in succession. ACPICA BZ 795.
5165 Example Code and Data Size: These are the sizes for the OS-independent
5166 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5167 debug version of the code includes the debug output trace mechanism and
5169 much larger code and data size.
5172 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
5173 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
5175 Non-Debug Version: 85.5K Code, 18.0K Data, 103.5K Total
5176 Debug Version: 161.6K Code, 50.9K Data, 212.5K Total
5178 2) iASL Compiler/Disassembler and Tools:
5180 ACPI 4.0: Implemented disassembler support for all new ACPI tables and
5181 changes to existing tables. ACPICA BZ 775.
5183 ----------------------------------------
5184 25 June 2009. Summary of changes for version 20090625:
5186 The ACPI 4.0 Specification was released on June 16 and is available at
5187 www.acpi.info. ACPICA implementation of ACPI 4.0 is underway and will
5188 continue for the next few releases.
5190 1) ACPI CA Core Subsystem:
5192 ACPI 4.0: Implemented interpreter support for the IPMI operation region
5193 address space. Includes support for bi-directional data buffers and an
5195 address space handler (to be installed by an IPMI device driver.) ACPICA
5199 ACPI 4.0: Added changes for existing ACPI tables - FACS and SRAT.
5201 support in both the header files and the disassembler.
5203 Completed a major update for the AcpiGetObjectInfo external interface.
5205 - Support for variable, unlimited length HID, UID, and CID strings.
5206 - Support Processor objects the same as Devices (HID,UID,CID,ADR,STA,
5208 - Call the _SxW power methods on behalf of a device object.
5209 - Determine if a device is a PCI root bridge.
5210 - Change the ACPI_BUFFER parameter to ACPI_DEVICE_INFO.
5211 These changes will require an update to all callers of this interface.
5213 the updated ACPICA Programmer Reference for details. One new source file
5215 been added - utilities/utids.c. ACPICA BZ 368, 780.
5217 Updated the AcpiRead and AcpiWrite external interfaces to support 64-bit
5218 transfers. The Value parameter has been extended from 32 bits to 64 bits
5220 order to support new ACPI 4.0 tables. These changes will require an
5223 all callers of these interfaces. See the ACPICA Programmer Reference for
5224 details. ACPICA BZ 768.
5226 Fixed several problems with AcpiAttachData. The handler was not invoked
5228 the host node was deleted. The data sub-object was not automatically
5230 when the host node was deleted. The interface to the handler had an
5232 parameter, this was removed. ACPICA BZ 778.
5234 Enhanced the function that dumps ACPI table headers. All non-printable
5235 characters in the string fields are now replaced with '?' (Signature,
5237 OemTableId, and CompilerId.) ACPI tables with non-printable characters in
5238 these fields are occasionally seen in the field. ACPICA BZ 788.
5240 Fixed a problem with predefined method repair code where the code that
5241 attempts to repair/convert an object of incorrect type is only executed
5243 the first time the predefined method is called. The mechanism that
5245 warnings on subsequent calls was interfering with the repair mechanism.
5248 Fixed a possible memory leak in the predefined validation/repair code
5251 buffer is automatically converted to an expected string object.
5253 Removed obsolete 16-bit files from the distribution and from the current
5255 tree head. ACPICA BZ 776.
5257 Example Code and Data Size: These are the sizes for the OS-independent
5258 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5259 debug version of the code includes the debug output trace mechanism and
5261 much larger code and data size.
5264 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
5265 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
5267 Non-Debug Version: 84.7K Code, 17.8K Data, 102.5K Total
5268 Debug Version: 160.5K Code, 50.6K Data, 211.1K Total
5270 2) iASL Compiler/Disassembler and Tools:
5272 ACPI 4.0: iASL and Disassembler - implemented support for the new IPMI
5273 operation region keyword. ACPICA BZ 771, 772. Lin Ming.
5275 ACPI 4.0: iASL - implemented compile-time validation support for all new
5276 predefined names and control methods (31 total). ACPICA BZ 769.
5278 ----------------------------------------
5279 21 May 2009. Summary of changes for version 20090521:
5281 1) ACPI CA Core Subsystem:
5283 Disabled the preservation of the SCI enable bit in the PM1 control
5285 The SCI enable bit (bit 0, SCI_EN) is defined by the ACPI specification
5288 a "preserved" bit - "OSPM always preserves this bit position", section
5289 4.7.3.2.1. However, some machines fail if this bit is in fact preserved
5290 because the bit needs to be explicitly set by the OS as a workaround. No
5291 machines fail if the bit is not preserved. Therefore, ACPICA no longer
5292 attempts to preserve this bit.
5294 Fixed a problem in AcpiRsGetPciRoutingTableLength where an invalid or
5295 incorrectly formed _PRT package could cause a fault. Added validation to
5296 ensure that each package element is actually a sub-package.
5298 Implemented a new interface to install or override a single control
5300 AcpiInstallMethod. This interface is useful when debugging in order to
5302 an existing method or to install a missing method without having to
5304 the entire ACPI table. See the ACPICA Programmer Reference for use and
5305 examples. Lin Ming, Bob Moore.
5307 Fixed several reference count issues with the DdbHandle object that is
5308 created from a Load or LoadTable operator. Prevent premature deletion of
5310 object. Also, mark the object as invalid once the table has been
5312 This is needed because the handle itself may not be deleted after the
5314 unload, depending on whether it has been stored in a named object by the
5317 Fixed a problem with Mutex Sync Levels. Fixed a problem where if multiple
5318 mutexes of the same sync level are acquired but then not released in
5320 opposite order, the internally maintained Current Sync Level becomes
5322 and can cause subsequent execution errors. ACPICA BZ 471.
5324 Changed the allowable release order for ASL mutex objects. The ACPI 4.0
5325 specification has been changed to make the SyncLevel for mutex objects
5327 useful. When releasing a mutex, the SyncLevel of the mutex must now be
5329 same as the current sync level. This makes more sense than the previous
5331 (SyncLevel less than or equal). This change updates the code to match the
5334 Fixed a problem with the local version of the AcpiOsPurgeCache function.
5336 (local) cache must be locked during all cache object deletions. Andrew
5339 Updated the Load operator to use operation region interfaces. This
5341 direct memory mapping with region access calls. Now, all region accesses
5343 through the installed region handler as they should.
5345 Simplified and optimized the NsGetNextNode function. Reduced parameter
5347 and reduced code for this frequently used function.
5349 Example Code and Data Size: These are the sizes for the OS-independent
5350 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5351 debug version of the code includes the debug output trace mechanism and
5353 much larger code and data size.
5356 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
5357 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
5359 Non-Debug Version: 83.4K Code, 17.5K Data, 100.9K Total
5360 Debug Version: 158.9K Code, 50.0K Data, 208.9K Total
5362 2) iASL Compiler/Disassembler and Tools:
5364 Disassembler: Fixed some issues with DMAR, HEST, MADT tables. Some
5366 with sub-table disassembly and handling invalid sub-tables. Attempt
5368 after an invalid sub-table ID.
5370 ----------------------------------------
5371 22 April 2009. Summary of changes for version 20090422:
5373 1) ACPI CA Core Subsystem:
5375 Fixed a compatibility issue with the recently released I/O port
5377 mechanism. For windows compatibility, 1) On a port protection violation,
5378 simply ignore the request and do not return an exception (allow the
5380 method to continue execution.) 2) If only part of the request overlaps a
5381 protected port, read/write the individual ports that are not protected.
5385 Enhanced the execution of the ASL/AML BreakPoint operator so that it
5387 breaks into the AML debugger if the debugger is present. This matches the
5388 ACPI-defined behavior.
5390 Fixed several possible warnings related to the use of the configurable
5391 ACPI_THREAD_ID. This type can now be configured as either an integer or a
5392 pointer with no warnings. Also fixes several warnings in printf-like
5393 statements for the 64-bit build when the type is configured as a pointer.
5396 Fixed a number of possible warnings when compiling with gcc 4+ (depending
5398 warning options.) Examples include printf formats, aliasing, unused
5400 missing prototypes, missing switch default statements, use of non-ANSI
5401 library functions, use of non-ANSI constructs. See generate/unix/Makefile
5403 a list of warning options used with gcc 3 and 4. ACPICA BZ 735.
5405 Example Code and Data Size: These are the sizes for the OS-independent
5406 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5407 debug version of the code includes the debug output trace mechanism and
5409 much larger code and data size.
5412 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
5413 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
5415 Non-Debug Version: 82.8K Code, 17.5K Data, 100.3K Total
5416 Debug Version: 158.0K Code, 49.9K Data, 207.9K Total
5418 2) iASL Compiler/Disassembler and Tools:
5420 iASL: Fixed a generation warning from Bison 2.3 and fixed several
5425 iASL: Fixed a problem where the Unix/Linux versions of the compiler could
5427 correctly digest Windows/DOS formatted files (with CR/LF).
5429 iASL: Added a new option for "quiet mode" (-va) that produces only the
5430 compilation summary, not individual errors and warnings. Useful for large
5433 AcpiExec: Implemented a new option (-z) to enable a forced
5435 timeout that can be used to detect hang conditions during execution of
5437 code (includes both internal semaphores and AML-defined mutexes and
5440 Added new makefiles for the generation of acpica in a generic unix-like
5441 environment. These makefiles are intended to generate the acpica tools
5443 utilities from the original acpica git source tree structure.
5445 Test Suites: Updated and cleaned up the documentation files. Updated the
5446 copyrights to 2009, affecting all source files. Use the new version of
5448 with quiet mode. Increased the number of available semaphores in the
5450 OSL, allowing the aslts to execute fully on Windows. For the Unix OSL,
5452 an alternate implementation of the semaphore timeout to allow aslts to
5453 execute fully on Cygwin.
5455 ----------------------------------------
5456 20 March 2009. Summary of changes for version 20090320:
5458 1) ACPI CA Core Subsystem:
5460 Fixed a possible race condition between AcpiWalkNamespace and dynamic
5462 unloads. Added a reader/writer locking mechanism to allow multiple
5464 namespace walks (readers), but block a dynamic table unload until it can
5466 exclusive write access to the namespace. This fixes a problem where a
5468 unload could (possibly catastrophically) delete the portion of the
5470 that is currently being examined by a walk. Adds a new file, utlock.c,
5472 implements the reader/writer lock mechanism. ACPICA BZ 749.
5474 Fixed a regression introduced in version 20090220 where a change to the
5476 handling could cause the ACPICA subsystem to access non-existent I/O
5479 Modified the handling of FADT register and table (FACS/DSDT) addresses.
5481 FADT can contain both 32-bit and 64-bit versions of these addresses.
5482 Previously, the 64-bit versions were favored, meaning that if both 32 and
5484 versions were valid, but not equal, the 64-bit version was used. This was
5485 found to cause some machines to fail. Now, in this case, the 32-bit
5487 is used instead. This now matches the Windows behavior.
5489 Implemented a new mechanism to protect certain I/O ports. Provides
5491 compatibility and protects the standard PC I/O ports from access via AML
5492 code. Adds a new file, hwvalid.c
5494 Fixed a possible extraneous warning message from the FADT support. The
5495 message warns of a 32/64 length mismatch between the legacy and GAS
5496 definitions for a register.
5498 Removed the obsolete AcpiOsValidateAddress OSL interface. This interface
5500 made obsolete by the port protection mechanism above. It was previously
5502 to validate the entire address range of an operation region, which could
5504 incorrect if the range included illegal ports, but fields within the
5505 operation region did not actually access those ports. Validation is now
5506 performed on a per-field basis instead of the entire region.
5508 Modified the handling of the PM1 Status Register ignored bit (bit 11.)
5509 Ignored bits must be "preserved" according to the ACPI spec. Usually,
5511 means a read/modify/write when writing to the register. However, for
5513 registers, writing a one means clear the event. Writing a zero means
5515 the event (do not clear.) This behavior is clarified in the ACPI 4.0
5517 and the ACPICA code now simply always writes a zero to the ignored bit.
5519 Modified the handling of ignored bits for the PM1 A/B Control Registers.
5521 per the ACPI specification, for the control registers, preserve
5522 (read/modify/write) all bits that are defined as either reserved or
5525 Updated the handling of write-only bits in the PM1 A/B Control Registers.
5526 When reading the register, zero the write-only bits as per the ACPI spec.
5527 ACPICA BZ 443. Lin Ming.
5529 Removed "Linux" from the list of supported _OSI strings. Linux no longer
5530 wants to reply true to this request. The Windows strings are the only
5532 through the AML that are tested and known to work properly.
5535 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
5536 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
5538 Non-Debug Version: 82.6K Code, 17.6K Data, 100.2K Total
5539 Debug Version: 157.7K Code, 49.9K Data, 207.6K Total
5541 2) iASL Compiler/Disassembler and Tools:
5543 Acpiexec: Split the large aeexec.c file into two new files, aehandlers.c
5547 ----------------------------------------
5548 20 February 2009. Summary of changes for version 20090220:
5550 1) ACPI CA Core Subsystem:
5552 Optimized the ACPI register locking. Removed locking for reads from the
5554 bit registers in PM1 Status, Enable, Control, and PM2 Control. The lock
5556 not required when reading the single-bit registers. The
5557 AcpiGetRegisterUnlocked function is no longer needed and has been
5559 This will improve performance for reads on these registers. ACPICA BZ
5562 Fixed the parameter validation for AcpiRead/Write. Now return
5563 AE_BAD_PARAMETER if the input register pointer is null, and
5566 the register has an address of zero. Previously, these cases simply
5568 AE_OK. For optional registers such as PM1B status/enable/control, the
5570 should check for a valid register address before calling. ACPICA BZ 748.
5572 Renamed the external ACPI bit register access functions. Renamed
5573 AcpiGetRegister and AcpiSetRegister to clarify the purpose of these
5574 functions. The new names are AcpiReadBitRegister and
5575 AcpiWriteBitRegister.
5576 Also, restructured the code for these functions by simplifying the code
5578 and condensing duplicate code to reduce code size.
5580 Added new functions to transparently handle the possibly split PM1 A/B
5581 registers. AcpiHwReadMultiple and AcpiHwWriteMultiple. These two
5583 now handle the split registers for PM1 Status, Enable, and Control.
5588 Added a function to handle the PM1 control registers,
5589 AcpiHwWritePm1Control.
5590 This function writes both of the PM1 control registers (A/B). These
5592 are different than the PM1 A/B status and enable registers in that
5594 values can be written to the A/B registers. Most notably, the SLP_TYP
5596 can be different, as per the values returned from the _Sx predefined
5599 Removed an extra register write within AcpiHwClearAcpiStatus. This
5601 was writing an optional PM1B status register twice. The existing call to
5603 low-level AcpiHwRegisterWrite automatically handles a possibly split PM1
5605 register. ACPICA BZ 751.
5607 Split out the PM1 Status registers from the FADT. Added new globals for
5609 registers (A/B), similar to the way the PM1 Enable registers are handled.
5610 Instead of overloading the FADT Event Register blocks. This makes the
5612 clearer and less prone to error.
5614 Fixed the warning message for when the platform contains too many ACPI
5616 for the default size of the global root table data structure. The
5618 for the truncation value was incorrect.
5620 Removed the ACPI_GET_OBJECT_TYPE macro. Removed all instances of this
5621 obsolete macro, since it is now a simple reference to ->common.type.
5623 were about 150 invocations of the macro across 41 files. ACPICA BZ 755.
5625 Removed the redundant ACPI_BITREG_SLEEP_TYPE_B. This type is the same as
5626 TYPE_A. Removed this and all related instances. Renamed SLEEP_TYPE_A to
5627 simply SLEEP_TYPE. ACPICA BZ 754.
5629 Conditionally compile the AcpiSetFirmwareWakingVector64 function. This
5630 function is only needed on 64-bit host operating systems and is thus not
5631 included for 32-bit hosts.
5633 Debug output: print the input and result for invocations of the _OSI
5635 control method via the ACPI_LV_INFO debug level. Also, reduced some of
5637 verbosity of this debug level. Len Brown.
5639 Example Code and Data Size: These are the sizes for the OS-independent
5640 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5641 debug version of the code includes the debug output trace mechanism and
5643 much larger code and data size.
5646 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
5647 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
5649 Non-Debug Version: 82.0K Code, 17.5K Data, 99.5K Total
5650 Debug Version: 156.9K Code, 49.8K Data, 206.7K Total
5652 2) iASL Compiler/Disassembler and Tools:
5654 Disassembler: Decode the FADT PM_Profile field. Emit ascii names for the
5655 various legal performance profiles.
5657 ----------------------------------------
5658 23 January 2009. Summary of changes for version 20090123:
5660 1) ACPI CA Core Subsystem:
5662 Added the 2009 copyright to all module headers and signons. This affects
5663 virtually every file in the ACPICA core subsystem, the iASL compiler, and
5664 the tools/utilities.
5666 Implemented a change to allow the host to override any ACPI table,
5668 dynamically loaded tables. Previously, only the DSDT could be replaced by
5670 host. With this change, the AcpiOsTableOverride interface is called for
5672 table found in the RSDT/XSDT during ACPICA initialization, and also
5674 a table is dynamically loaded via the AML Load operator.
5676 Updated FADT flag definitions, especially the Boot Architecture flags.
5678 Debugger: For the Find command, automatically pad the input ACPI name
5680 underscores if the name is shorter than 4 characters. This enables a
5682 with the actual namespace entry which is itself padded with underscores.
5684 Example Code and Data Size: These are the sizes for the OS-independent
5685 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5686 debug version of the code includes the debug output trace mechanism and
5688 much larger code and data size.
5691 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
5692 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
5694 Non-Debug Version: 82.3K Code, 17.5K Data, 99.8K Total
5695 Debug Version: 157.3K Code, 49.8K Data, 207.1K Total
5697 2) iASL Compiler/Disassembler and Tools:
5699 Fix build error under Bison-2.4.
5701 Dissasembler: Enhanced FADT support. Added decoding of the Boot
5703 flags. Now decode all flags, regardless of the FADT version. Flag output
5704 includes the FADT version which first defined each flag.
5706 The iASL -g option now dumps the RSDT to a file (in addition to the FADT
5708 DSDT). Windows only.
5710 ----------------------------------------
5711 04 December 2008. Summary of changes for version 20081204:
5713 1) ACPI CA Core Subsystem:
5715 The ACPICA Programmer Reference has been completely updated and revamped
5717 this release. This includes updates to the external interfaces, OSL
5718 interfaces, the overview sections, and the debugger reference.
5720 Several new ACPICA interfaces have been implemented and documented in the
5721 programmer reference:
5722 AcpiReset - Writes the reset value to the FADT-defined reset register.
5723 AcpiDisableAllGpes - Disable all available GPEs.
5724 AcpiEnableAllRuntimeGpes - Enable all available runtime GPEs.
5725 AcpiGetGpeDevice - Get the GPE block device associated with a GPE.
5726 AcpiGbl_CurrentGpeCount - Tracks the current number of available GPEs.
5727 AcpiRead - Low-level read ACPI register (was HwLowLevelRead.)
5728 AcpiWrite - Low-level write ACPI register (was HwLowLevelWrite.)
5730 Most of the public ACPI hardware-related interfaces have been moved to a
5732 file, components/hardware/hwxface.c
5734 Enhanced the FADT parsing and low-level ACPI register access: The ACPI
5735 register lengths within the FADT are now used, and the low level ACPI
5736 register access no longer hardcodes the ACPI register lengths. Given that
5737 there may be some risk in actually trusting the FADT register lengths, a
5739 time option was added to fall back to the default hardcoded lengths if
5741 FADT proves to contain incorrect values - UseDefaultRegisterWidths. This
5742 option is set to true for now, and a warning is issued if a suspicious
5744 register length is overridden with the default value.
5746 Fixed a reference count issue in NsRepairObject. This problem was
5748 in version 20081031 as part of a fix to repair Buffer objects within
5751 Added semaphore support to the Linux/Unix application OS-services layer
5752 (OSL). ACPICA BZ 448. Lin Ming.
5754 Added the ACPI_MUTEX_TYPE configuration option to select whether mutexes
5756 be implemented in the OSL, or will binary semaphores be used instead.
5758 Example Code and Data Size: These are the sizes for the OS-independent
5759 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5760 debug version of the code includes the debug output trace mechanism and
5762 much larger code and data size.
5765 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
5766 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
5768 Non-Debug Version: 82.3K Code, 17.4K Data, 99.7K Total
5769 Debug Version: 157.1K Code, 49.7K Data, 206.8K Total
5771 2) iASL Compiler/Disassembler and Tools:
5773 iASL: Completed the '-e' option to include additional ACPI tables in
5776 aid with disassembly and External statement generation. ACPICA BZ 742.
5780 iASL: Removed the "named object in while loop" error. The compiler cannot
5781 determine how many times a loop will execute. ACPICA BZ 730.
5783 Disassembler: Implemented support for FADT revision 2 (MS extension).
5787 Disassembler: Updates for several ACPI data tables (HEST, EINJ, and
5790 ----------------------------------------
5791 31 October 2008. Summary of changes for version 20081031:
5793 1) ACPI CA Core Subsystem:
5795 Restructured the ACPICA header files into public/private. acpi.h now
5797 only the "public" acpica headers. All other acpica headers are "private"
5799 should not be included by acpica users. One new file, accommon.h is used
5801 include the commonly used private headers for acpica code generation.
5803 plans include moving all private headers to a new subdirectory.
5805 Implemented an automatic Buffer->String return value conversion for
5806 predefined ACPI methods. For these methods (such as _BIF), added
5808 conversion for return objects that are required to be a String, but a
5810 was found instead. This can happen when reading string battery data from
5812 operation region, because it used to be difficult to convert the data
5814 buffer to string from within the ASL. Ensures that the host OS is
5816 with a valid null-terminated string. Linux BZ 11822.
5818 Updated the FACS waking vector interfaces. Split
5819 AcpiSetFirmwareWakingVector
5820 into two: one for the 32-bit vector, another for the 64-bit vector. This
5822 required because the host OS must setup the wake much differently for
5824 vector (real vs. protected mode, etc.) and the interface itself should
5827 deciding which vector to use. Also, eliminated the
5828 GetFirmwareWakingVector
5829 interface, as it served no purpose (only the firmware reads the vector,
5831 only writes the vector.) ACPICA BZ 731.
5833 Implemented a mechanism to escape infinite AML While() loops. Added a
5835 counter to force exit from AML While loops if the count becomes too
5837 This can occur in poorly written AML when the hardware does not respond
5838 within a while loop and the loop does not implement a timeout. The
5840 loop count is configurable. A new exception code is returned when a loop
5842 broken, AE_AML_INFINITE_LOOP. Alexey Starikovskiy, Bob Moore.
5844 Optimized the execution of AML While loops. Previously, a control state
5845 object was allocated and freed for each execution of the loop. The
5846 optimization is to simply reuse the control state for each iteration.
5848 speeds up the raw loop execution time by about 5%.
5850 Enhanced the implicit return mechanism. For Windows compatibility, return
5852 implicit integer of value zero for methods that contain no executable
5854 Such methods are seen in the field as stubs (presumably), and can cause
5855 drivers to fail if they expect a return value. Lin Ming.
5857 Allow multiple backslashes as root prefixes in namepaths. In a fully
5858 qualified namepath, allow multiple backslash prefixes. This can happen
5860 is seen in the field) because of the use of a double-backslash in strings
5861 (since backslash is the escape character) causing confusion. ACPICA BZ
5865 Emit a warning if two different FACS or DSDT tables are discovered in the
5866 FADT. Checks if there are two valid but different addresses for the FACS
5868 DSDT within the FADT (mismatch between the 32-bit and 64-bit fields.)
5870 Consolidated the method argument count validation code. Merged the code
5872 validates control method argument counts into the predefined validation
5873 module. Eliminates possible multiple warnings for incorrect argument
5876 Implemented ACPICA example code. Includes code for ACPICA initialization,
5877 handler installation, and calling a control method. Available at
5878 source/tools/examples.
5880 Added a global pointer for FACS table to simplify internal FACS access.
5882 the global pointer instead of using AcpiGetTableByIndex for each FACS
5884 This simplifies the code for the Global Lock and the Firmware Waking
5887 Example Code and Data Size: These are the sizes for the OS-independent
5888 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5889 debug version of the code includes the debug output trace mechanism and
5891 much larger code and data size.
5894 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
5895 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
5897 Non-Debug Version: 81.7K Code, 17.3K Data, 99.0K Total
5898 Debug Version: 156.4K Code, 49.4K Data, 205.8K Total
5900 2) iASL Compiler/Disassembler and Tools:
5902 iASL: Improved disassembly of external method calls. Added the -e option
5904 allow the inclusion of additional ACPI tables to help with the
5907 method invocations and the generation of external declarations during the
5908 disassembly. Certain external method invocations cannot be disassembled
5909 properly without the actual declaration of the method. Use the -e option
5911 include the table where the external method(s) are actually declared.
5913 useful for disassembling SSDTs that make method calls back to the master
5914 DSDT. Lin Ming. Example: To disassemble an SSDT with calls to DSDT: iasl
5916 -e dsdt.aml ssdt1.aml
5918 iASL: Fix to allow references to aliases within ASL namepaths. Fixes a
5919 problem where the use of an alias within a namepath would result in a not
5920 found error or cause the compiler to fault. Also now allows forward
5921 references from the Alias operator itself. ACPICA BZ 738.
5923 ----------------------------------------
5924 26 September 2008. Summary of changes for version 20080926:
5926 1) ACPI CA Core Subsystem:
5928 Designed and implemented a mechanism to validate predefined ACPI methods
5930 objects. This code validates the predefined ACPI objects (objects whose
5932 start with underscore) that appear in the namespace, at the time they are
5933 evaluated. The argument count and the type of the returned object are
5934 validated against the ACPI specification. The purpose of this validation
5936 to detect problems with the BIOS-implemented predefined ACPI objects
5938 the results are returned to the ACPI-related drivers. Future enhancements
5940 include actual repair of incorrect return objects where possible. Two new
5941 files are nspredef.c and acpredef.h.
5943 Fixed a fault in the AML parser if a memory allocation fails during the
5945 completion routine AcpiPsCompleteThisOp. Lin Ming. ACPICA BZ 492.
5947 Fixed an issue with implicit return compatibility. This change improves
5949 implicit return mechanism to be more compatible with the MS interpreter.
5951 Ming, ACPICA BZ 349.
5953 Implemented support for zero-length buffer-to-string conversions. Allow
5955 length strings during interpreter buffer-to-string conversions. For
5957 during the ToDecimalString and ToHexString operators, as well as implicit
5958 conversions. Fiodor Suietov, ACPICA BZ 585.
5960 Fixed two possible memory leaks in the error exit paths of
5961 AcpiUtUpdateObjectReference and AcpiUtWalkPackageTree. These functions
5963 similar in that they use a stack of state objects in order to eliminate
5964 recursion. The stack must be fully unwound and deallocated if an error
5965 occurs. Lin Ming. ACPICA BZ 383.
5967 Removed the unused ACPI_BITREG_WAKE_ENABLE definition and entry in the
5969 ACPI register table. This bit does not exist and is unused. Lin Ming, Bob
5970 Moore ACPICA BZ 442.
5972 Removed the obsolete version number in module headers. Removed the
5973 "$Revision" number that appeared in each module header. This version
5975 was useful under SourceSafe and CVS, but has no meaning under git. It is
5977 only incorrect, it could also be misleading.
5979 Example Code and Data Size: These are the sizes for the OS-independent
5980 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
5981 debug version of the code includes the debug output trace mechanism and
5983 much larger code and data size.
5986 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
5987 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
5989 Non-Debug Version: 81.2K Code, 17.0K Data, 98.2K Total
5990 Debug Version: 155.8K Code, 49.1K Data, 204.9K Total
5992 ----------------------------------------
5993 29 August 2008. Summary of changes for version 20080829:
5995 1) ACPI CA Core Subsystem:
5997 Completed a major cleanup of the internal ACPI_OPERAND_OBJECT of type
5998 Reference. Changes include the elimination of cheating on the Object
6000 for the DdbHandle subtype, addition of a reference class field to
6001 differentiate the various reference types (instead of an AML opcode), and
6003 cleanup of debug output for this object. Lin Ming, Bob Moore. BZ 723
6005 Reduce an error to a warning for an incorrect method argument count.
6006 Previously aborted with an error if too few arguments were passed to a
6007 control method via the external ACPICA interface. Now issue a warning
6009 and continue. Handles the case where the method inadvertently declares
6011 many arguments, but does not actually use the extra ones. Applies mainly
6013 the predefined methods. Lin Ming. Linux BZ 11032.
6015 Disallow the evaluation of named object types with no intrinsic value.
6017 AE_TYPE for objects that have no value and therefore evaluation is
6019 Device, Event, Mutex, Region, Thermal, and Scope. Previously, evaluation
6021 these types were allowed, but an exception would be generated at some
6023 during the evaluation. Now, the error is generated up front.
6025 Fixed a possible memory leak in the AcpiNsGetExternalPathname function
6026 (nsnames.c). Fixes a leak in the error exit path.
6028 Removed the obsolete debug levels ACPI_DB_WARN and ACPI_DB_ERROR. These
6030 levels were made obsolete by the ACPI_WARNING, ACPI_ERROR, and
6032 interfaces. Also added ACPI_DB_EVENTS to correspond with the existing
6035 Removed obsolete and/or unused exception codes from the acexcep.h header.
6036 There is the possibility that certain device drivers may be affected if
6038 use any of these exceptions.
6040 The ACPICA documentation has been added to the public git source tree,
6042 acpica/documents. Included are the ACPICA programmer reference, the iASL
6043 compiler reference, and the changes.txt release logfile.
6045 Example Code and Data Size: These are the sizes for the OS-independent
6046 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6047 debug version of the code includes the debug output trace mechanism and
6049 much larger code and data size.
6052 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
6053 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
6055 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
6056 Debug Version: 153.7K Code, 48.2K Data, 201.9K Total
6058 2) iASL Compiler/Disassembler and Tools:
6060 Allow multiple argument counts for the predefined _SCP method. ACPI 3.0
6061 defines _SCP with 3 arguments. Previous versions defined it with only 1
6062 argument. iASL now allows both definitions.
6064 iASL/disassembler: avoid infinite loop on bad ACPI tables. Check for
6066 length subtables when disassembling ACPI tables. Also fixed a couple of
6067 errors where a full 16-bit table type field was not extracted from the
6071 acpisrc: Improve comment counting mechanism for generating source code
6072 statistics. Count first and last lines of multi-line comments as
6074 not comment lines. Handle Linux legal header in addition to standard
6078 ----------------------------------------
6080 29 July 2008. Summary of changes for version 20080729:
6082 1) ACPI CA Core Subsystem:
6084 Fix a possible deadlock in the GPE dispatch. Remove call to
6085 AcpiHwDisableAllGpes during wake in AcpiEvGpeDispatch. This call will
6087 to acquire the GPE lock but can deadlock since the GPE lock is already
6089 at dispatch time. This code was introduced in version 20060831 as a
6091 to Linux BZ 6881 and has since been removed from Linux.
6093 Add a function to dereference returned reference objects. Examines the
6095 object from a call to AcpiEvaluateObject. Any Index or RefOf references
6097 automatically dereferenced in an attempt to return something useful
6099 reference types cannot be converted into an external ACPI_OBJECT.)
6101 MS compatibility. Lin Ming, Bob Moore. Linux BZ 11105
6103 x2APIC support: changes for MADT and SRAT ACPI tables. There are 2 new
6104 subtables for the MADT and one new subtable for the SRAT. Includes
6105 disassembler and AcpiSrc support. Data from the Intel 64 Architecture
6107 Specification, June 2008.
6109 Additional error checking for pathname utilities. Add error check after
6111 calls to AcpiNsGetPathnameLength. Add status return from
6112 AcpiNsBuildExternalPath and check after all calls. Add parameter
6114 to AcpiUtInitializeBuffer. Reported by and initial patch by Ingo Molnar.
6116 Return status from the global init function AcpiUtGlobalInitialize. This
6118 used by both the kernel subsystem and the utilities such as iASL
6120 The function could possibly fail when the caches are initialized. Yang
6123 Add a function to decode reference object types to strings. Created for
6124 improved error messages.
6126 Improve object conversion error messages. Better error messages during
6128 conversion from internal to the external ACPI_OBJECT. Used for external
6130 to AcpiEvaluateObject.
6132 Example Code and Data Size: These are the sizes for the OS-independent
6133 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6134 debug version of the code includes the debug output trace mechanism and
6136 much larger code and data size.
6139 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
6140 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
6142 Non-Debug Version: 79.7K Code, 16.4K Data, 96.1K Total
6143 Debug Version: 153.9K Code, 48.4K Data, 202.3K Total
6145 2) iASL Compiler/Disassembler and Tools:
6147 Debugger: fix a possible hang when evaluating non-methods. Fixes a
6149 introduced in version 20080701. If the object being evaluated (via
6151 command) is not a method, the debugger can hang while trying to obtain
6153 existent parameters.
6155 iASL: relax error for using reserved "_T_x" identifiers. These names can
6156 appear in a disassembled ASL file if they were emitted by the original
6157 compiler. Instead of issuing an error or warning and forcing the user to
6158 manually change these names, issue a remark instead.
6160 iASL: error if named object created in while loop. Emit an error if any
6162 object is created within a While loop. If allowed, this code will
6165 run-time error on the second iteration of the loop when an attempt is
6168 create the same named object twice. ACPICA bugzilla 730.
6170 iASL: Support absolute pathnames for include files. Add support for
6172 pathnames within the Include operator. previously, only relative
6176 iASL: Enforce minimum 1 interrupt in interrupt macro and Resource
6178 The ACPI spec requires one interrupt minimum. BZ 423
6180 iASL: Handle a missing ResourceSource arg, with a present SourceIndex.
6181 Handles the case for the Interrupt Resource Descriptor where
6182 the ResourceSource argument is omitted but ResourceSourceIndex
6183 is present. Now leave room for the Index. BZ 426
6185 iASL: Prevent error message if CondRefOf target does not exist. Fixes
6187 where an error message is emitted if the target does not exist. BZ 516
6189 iASL: Fix broken -g option (get Windows ACPI tables). Fixes the -g option
6190 (get ACPI tables on Windows). This was apparently broken in version
6193 AcpiXtract: Handle EOF while extracting data. Correctly handle the case
6195 the EOF happens immediately after the last table in the input file. Print
6196 completion message. Previously, no message was displayed in this case.
6198 ----------------------------------------
6199 01 July 2008. Summary of changes for version 20080701:
6201 0) Git source tree / acpica.org
6203 Fixed a problem where a git-clone from http would not transfer the entire
6206 1) ACPI CA Core Subsystem:
6208 Implemented a "careful" GPE disable in AcpiEvDisableGpe, only modify one
6209 enable bit. Now performs a read-change-write of the enable register
6211 of simply writing out the cached enable mask. This will prevent
6213 enabling of GPEs if a rogue GPE is received during initialization (before
6215 handlers are installed.)
6217 Implemented a copy for dynamically loaded tables. Previously, dynamically
6218 loaded tables were simply mapped - but on some machines this memory is
6219 corrupted after suspend. Now copy the table to a local buffer. For the
6220 OpRegion case, added checksum verify. Use the table length from the table
6221 header, not the region length. For the Buffer case, use the table length
6222 also. Dennis Noordsij, Bob Moore. BZ 10734
6224 Fixed a problem where the same ACPI table could not be dynamically loaded
6226 unloaded more than once. Without this change, a table cannot be loaded
6228 once it has been loaded/unloaded one time. The current mechanism does not
6229 unregister a table upon an unload. During a load, if the same table is
6231 this no longer returns an exception. BZ 722
6233 Fixed a problem where the wrong descriptor length was calculated for the
6234 EndTag descriptor in 64-bit mode. The "minimal" descriptors such as
6236 are calculated as 12 bytes long, but the actual length in the internal
6237 descriptor is 16 because of the round-up to 8 on the 64-bit build.
6239 by Linn Crosetto. BZ 728
6241 Fixed a possible memory leak in the Unload operator. The DdbHandle
6243 by Load() did not have its reference count decremented during unload,
6245 to a memory leak. Lin Ming. BZ 727
6247 Fixed a possible memory leak when deleting thermal/processor objects. Any
6248 associated notify handlers (and objects) were not being deleted. Fiodor
6251 Fixed the ordering of the ASCII names in the global mutex table to match
6253 actual mutex IDs. Used by AcpiUtGetMutexName, a function used for debug
6255 Vegard Nossum. BZ 726
6257 Enhanced the AcpiGetObjectInfo interface to return the number of required
6258 arguments if the object is a control method. Added this call to the
6260 so the proper number of default arguments are passed to a method. This
6261 prevents a warning when executing methods from AcpiExec.
6263 Added a check for an invalid handle in AcpiGetObjectInfo. Return
6264 AE_BAD_PARAMETER if input handle is invalid. BZ 474
6266 Fixed an extraneous warning from exconfig.c on the 64-bit build.
6268 Example Code and Data Size: These are the sizes for the OS-independent
6269 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6270 debug version of the code includes the debug output trace mechanism and
6272 much larger code and data size.
6275 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
6276 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
6278 Non-Debug Version: 79.6K Code, 16.2K Data, 95.8K Total
6279 Debug Version: 153.5K Code, 48.2K Data, 201.7K Total
6281 2) iASL Compiler/Disassembler and Tools:
6283 iASL: Added two missing ACPI reserved names. Added _MTP and _ASZ, both
6284 resource descriptor names.
6286 iASL: Detect invalid ASCII characters in input (windows version). Removed
6288 "-CF" flag from the flex compile, enables correct detection of non-ASCII
6289 characters in the input. BZ 441
6291 iASL: Eliminate warning when result of LoadTable is not used. Eliminate
6293 "result of operation not used" warning when the DDB handle returned from
6294 LoadTable is not used. The warning is not needed. BZ 590
6296 AcpiExec: Add support for dynamic table load/unload. Now calls _CFG
6299 pass address of table to the AML. Added option to disable OpRegion
6301 to allow creation of an OpRegion with a real address that was passed to
6303 All of this allows testing of the Load and Unload operators from
6306 Debugger: update tables command for unloaded tables. Handle unloaded
6308 and use the standard table header output routine.
6310 ----------------------------------------
6311 09 June 2008. Summary of changes for version 20080609:
6313 1) ACPI CA Core Subsystem:
6315 Implemented a workaround for reversed _PRT entries. A significant number
6317 BIOSs erroneously reverse the _PRT SourceName and the SourceIndex. This
6318 change dynamically detects and repairs this problem. Provides
6320 with MS ACPI. BZ 6859
6322 Simplified the internal ACPI hardware interfaces to eliminate the locking
6323 flag parameter from Register Read/Write. Added a new external interface,
6324 AcpiGetRegisterUnlocked.
6326 Fixed a problem where the invocation of a GPE control method could hang.
6328 was a regression introduced in 20080514. The new method argument count
6329 validation mechanism can enter an infinite loop when a GPE method is
6330 dispatched. Problem fixed by removing the obsolete code that passed GPE
6332 information to the notify handler via the control method parameter
6335 Fixed a problem where the _SST execution status was incorrectly returned
6337 the caller of AcpiEnterSleepStatePrep. This was a regression introduced
6339 20080514. _SST is optional and a NOT_FOUND exception should never be
6342 Fixed a problem where a deleted object could be accessed from within the
6344 parser. This was a regression introduced in version 20080123 as a fix for
6346 Unload operator. Lin Ming. BZ 10669
6348 Cleaned up the debug operand dump mechanism. Eliminated unnecessary
6350 and eliminated the use of a negative index in a loop. Operands are now
6351 displayed in the correct order, not backwards. This also fixes a
6353 introduced in 20080514 on 64-bit systems where the elimination of
6354 ACPI_NATIVE_UINT caused the negative index to go large and positive. BZ
6357 Fixed a possible memory leak in EvPciConfigRegionSetup where the error
6359 path did not delete a locally allocated structure.
6361 Updated definitions for the DMAR and SRAT tables to synchronize with the
6362 current specifications. Includes disassembler support.
6364 Fixed a problem in the mutex debug code (in utmutex.c) where an incorrect
6365 loop termination value was used. Loop terminated on iteration early,
6367 one mutex. Linn Crosetto
6369 Example Code and Data Size: These are the sizes for the OS-independent
6370 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6371 debug version of the code includes the debug output trace mechanism and
6373 much larger code and data size.
6376 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
6377 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
6379 Non-Debug Version: 79.3K Code, 16.2K Data, 95.5K Total
6380 Debug Version: 153.0K Code, 48.2K Data, 201.2K Total
6382 2) iASL Compiler/Disassembler and Tools:
6384 Disassembler: Implemented support for EisaId() within _CID objects. Now
6385 disassemble integer _CID objects back to EisaId invocations, including
6386 multiple integers within _CID packages. Includes single-step support for
6389 Disassembler: Added support for DMAR and SRAT table definition changes.
6391 ----------------------------------------
6392 14 May 2008. Summary of changes for version 20080514:
6394 1) ACPI CA Core Subsystem:
6396 Fixed a problem where GPEs were enabled too early during the ACPICA
6397 initialization. This could lead to "handler not installed" errors on some
6398 machines. Moved GPE enable until after _REG/_STA/_INI methods are run.
6400 ensures that all operation regions and devices throughout the namespace
6402 been initialized before GPEs are enabled. Alexey Starikovskiy, BZ 9916.
6404 Implemented a change to the enter sleep code. Moved execution of the _GTS
6405 method to just before setting sleep enable bit. The execution was moved
6407 AcpiEnterSleepStatePrep to AcpiEnterSleepState. _GTS is now executed
6408 immediately before the SLP_EN bit is set, as per the ACPI specification.
6411 Implemented a fix to disable unknown GPEs (2nd version). Now always
6413 the GPE, even if ACPICA thinks that that it is already disabled. It is
6414 possible that the AML or some other code has enabled the GPE unbeknownst
6418 Fixed a problem with the Field operator where zero-length fields would
6420 an AE_AML_NO_OPERAND exception during table load. Fix enables zero-length
6422 field declarations in Field(), BankField(), and IndexField(). BZ 10606.
6424 Implemented a fix for the Load operator, now load the table at the
6426 root. This reverts a change introduced in version 20071019. The table is
6428 loaded at the namespace root even though this goes against the ACPI
6429 specification. This provides compatibility with other ACPI
6431 The ACPI specification will be updated to reflect this in ACPI 4.0. Lin
6434 Fixed a problem where ACPICA would not Load() tables with unusual
6436 Now ignore ACPI table signature for Load() operator. Only "SSDT" is
6437 acceptable to the ACPI spec, but tables are seen with OEMx and null sigs.
6438 Therefore, signature validation is worthless. Apparently MS ACPI accepts
6440 signatures, ACPICA must be compatible. BZ 10454.
6442 Fixed a possible negative array index in AcpiUtValidateException. Added
6444 fields to the exception string arrays to eliminate a -1 subtraction on
6448 Updated the debug tracking macros to reduce overall code and data size.
6449 Changed ACPI_MODULE_NAME and ACPI_FUNCTION_NAME to use arrays of strings
6450 instead of pointers to static strings. Jan Beulich and Bob Moore.
6452 Implemented argument count checking in control method invocation via
6453 AcpiEvaluateObject. Now emit an error if too few arguments, warning if
6455 many. This applies only to extern programmatic control method execution,
6457 method-to-method calls within the AML. Lin Ming.
6459 Eliminated the ACPI_NATIVE_UINT type across all ACPICA code. This type is
6461 longer needed, especially with the removal of 16-bit support. It was
6463 mostly with UINT32, but also ACPI_SIZE where a type that changes 32/64
6466 32/64-bit platforms is required.
6468 Added the C const qualifier for appropriate string constants -- mostly
6469 MODULE_NAME and printf format strings. Jan Beulich.
6471 Example Code and Data Size: These are the sizes for the OS-independent
6472 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6473 debug version of the code includes the debug output trace mechanism and
6475 much larger code and data size.
6478 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
6479 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
6481 Non-Debug Version: 79.5K Code, 16.2K Data, 95.7K Total
6482 Debug Version: 153.3K Code, 48.3K Data, 201.6K Total
6484 2) iASL Compiler/Disassembler and Tools:
6486 Implemented ACPI table revision ID validation in the disassembler. Zero
6488 always invalid. For DSDTs, the ID controls the interpreter integer width.
6490 means 32-bit and this is unusual. 2 or greater is 64-bit.
6492 ----------------------------------------
6493 21 March 2008. Summary of changes for version 20080321:
6495 1) ACPI CA Core Subsystem:
6497 Implemented an additional change to the GPE support in order to suppress
6498 spurious or stray GPEs. The AcpiEvDisableGpe function will now
6500 disable incoming GPEs that are neither enabled nor disabled -- meaning
6502 the GPE is unknown to the system. This should prevent future interrupt
6504 from that GPE. BZ 6217 (Zhang Rui)
6506 Fixed a problem where NULL package elements were not returned to the
6507 AcpiEvaluateObject interface correctly. The element was simply ignored
6508 instead of returning a NULL ACPI_OBJECT package element, potentially
6510 a buffer overflow and/or confusing the caller who expected a fixed number
6512 elements. BZ 10132 (Lin Ming, Bob Moore)
6514 Fixed a problem with the CreateField, CreateXXXField (Bit, Byte, Word,
6516 Qword), Field, BankField, and IndexField operators when invoked from
6518 an executing control method. In this case, these operators created
6520 nodes that were incorrectly left marked as permanent nodes instead of
6521 temporary nodes. This could cause a problem if there is race condition
6522 between an exiting control method and a running namespace walk. (Reported
6526 Fixed a problem where the CreateField and CreateXXXField operators would
6527 incorrectly allow duplicate names (the name of the field) with no
6531 Implemented several changes for Notify handling. Added support for new
6533 values (ACPI 2.0+) and improved the Notify debug output. Notify on
6534 PowerResource objects is no longer allowed, as per the ACPI
6536 (Bob Moore, Zhang Rui)
6538 All Reference Objects returned via the AcpiEvaluateObject interface are
6540 marked as type "REFERENCE" instead of "ANY". The type ANY is now reserved
6542 NULL objects - either NULL package elements or unresolved named
6545 Fixed a problem where an extraneous debug message was produced for
6547 objects (when debugging enabled). The message "Package List length larger
6548 than NumElements count" is now produced in the correct case, and is now
6550 error message rather than a debug message. Added a debug message for the
6551 opposite case, where NumElements is larger than the Package List (the
6553 will be padded out with NULL elements as per the ACPI spec.)
6555 Implemented several improvements for the output of the ASL "Debug" object
6557 clarify and keep all data for a given object on one output line.
6559 Fixed two size calculation issues with the variable-length Start
6561 resource descriptor.
6563 Example Code and Data Size: These are the sizes for the OS-independent
6564 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6565 debug version of the code includes the debug output trace mechanism and
6567 a much larger code and data size.
6570 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
6571 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
6573 Non-Debug Version: 80.0K Code, 17.4K Data, 97.4K Total
6574 Debug Version: 159.4K Code, 64.4K Data, 223.8K Total
6576 2) iASL Compiler/Disassembler and Tools:
6578 Fixed a problem with the use of the Switch operator where execution of
6580 containing method by multiple concurrent threads could cause an
6581 AE_ALREADY_EXISTS exception. This is caused by the fact that there is no
6582 actual Switch opcode, it must be simulated with local named temporary
6583 variables and if/else pairs. The solution chosen was to mark any method
6585 uses Switch as Serialized, thus preventing multiple thread entries. BZ
6588 ----------------------------------------
6589 13 February 2008. Summary of changes for version 20080213:
6591 1) ACPI CA Core Subsystem:
6593 Implemented another MS compatibility design change for GPE/Notify
6595 GPEs are now cleared/enabled asynchronously to allow all pending notifies
6597 complete first. It is expected that the OSL will queue the enable request
6598 behind all pending notify requests (may require changes to the local host
6600 in AcpiOsExecute). Alexey Starikovskiy.
6602 Fixed a problem where buffer and package objects passed as arguments to a
6603 control method via the external AcpiEvaluateObject interface could cause
6605 AE_AML_INTERNAL exception depending on the order and type of operators
6606 executed by the target control method.
6608 Fixed a problem where resource descriptor size optimization could cause a
6609 problem when a _CRS resource template is passed to a _SRS method. The
6611 resource template must use the same descriptors (with the same size) as
6612 returned from _CRS. This change affects the following resource
6614 IRQ / IRQNoFlags and StartDependendentFn / StartDependentFnNoPri. (BZ
6617 Fixed a problem where a CopyObject to RegionField, BankField, and
6619 objects did not perform an implicit conversion as it should. These types
6621 retain their initial type permanently as per the ACPI specification.
6623 a CopyObject to all other object types should not perform an implicit
6624 conversion, as per the ACPI specification. (Lin Ming, Bob Moore) BZ 388
6626 Fixed a problem with the AcpiGetDevices interface where the mechanism to
6627 match device CIDs did not examine the entire list of available CIDs, but
6628 instead aborted on the first non-matching CID. Andrew Patterson.
6630 Fixed a regression introduced in version 20071114. The ACPI_HIDWORD macro
6632 inadvertently changed to return a 16-bit value instead of a 32-bit value,
6633 truncating the upper dword of a 64-bit value. This macro is only used to
6634 display debug output, so no incorrect calculations were made. Also,
6635 reimplemented the macro so that a 64-bit shift is not performed by
6636 inefficient compilers.
6638 Added missing va_end statements that should correspond with each va_start
6641 Example Code and Data Size: These are the sizes for the OS-independent
6642 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6643 debug version of the code includes the debug output trace mechanism and
6645 a much larger code and data size.
6648 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
6649 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
6651 Non-Debug Version: 79.7K Code, 17.3K Data, 97.0K Total
6652 Debug Version: 158.9K Code, 64.0K Data, 222.9K Total
6654 2) iASL Compiler/Disassembler and Tools:
6656 Implemented full disassembler support for the following new ACPI tables:
6657 BERT, EINJ, and ERST. Implemented partial disassembler support for the
6658 complicated HEST table. These tables support the Windows Hardware Error
6659 Architecture (WHEA).
6661 ----------------------------------------
6662 23 January 2008. Summary of changes for version 20080123:
6664 1) ACPI CA Core Subsystem:
6666 Added the 2008 copyright to all module headers and signons. This affects
6667 virtually every file in the ACPICA core subsystem, the iASL compiler, and
6668 the tools/utilities.
6670 Fixed a problem with the SizeOf operator when used with Package and
6672 objects. These objects have deferred execution for some arguments, and
6674 execution is now completed before the SizeOf is executed. This problem
6676 unexpected AE_PACKAGE_LIMIT errors on some systems (Lin Ming, Bob Moore)
6680 Implemented an enhancement to the interpreter "slack mode". In the
6683 an explicit return or an implicitly returned object from the last
6685 opcode, a control method will now implicitly return an integer of value 0
6687 Microsoft compatibility. (Lin Ming) BZ 392
6689 Fixed a problem with the Load operator where an exception was not
6692 the case where the table is already loaded. (Lin Ming) BZ 463
6694 Implemented support for the use of DDBHandles as an Indexed Reference, as
6696 the ACPI spec. (Lin Ming) BZ 486
6698 Implemented support for UserTerm (Method invocation) for the Unload
6700 as per the ACPI spec. (Lin Ming) BZ 580
6702 Fixed a problem with the LoadTable operator where the OemId and
6704 input strings could cause unexpected failures if they were shorter than
6706 maximum lengths allowed. (Lin Ming, Bob Moore) BZ 576
6708 Implemented support for UserTerm (Method invocation) for the Unload
6710 as per the ACPI spec. (Lin Ming) BZ 580
6712 Implemented header file support for new ACPI tables - BERT, ERST, EINJ,
6714 IBFT, UEFI, WDAT. Disassembler support is forthcoming.
6716 Example Code and Data Size: These are the sizes for the OS-independent
6717 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6718 debug version of the code includes the debug output trace mechanism and
6720 a much larger code and data size.
6723 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
6724 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
6726 Non-Debug Version: 79.5K Code, 17.2K Data, 96.7K Total
6727 Debug Version: 159.0K Code, 63.8K Data, 222.8K Total
6729 2) iASL Compiler/Disassembler and Tools:
6731 Implemented support in the disassembler for checksum validation on
6733 binary DSDTs and SSDTs. If incorrect, a message is displayed within the
6735 header dump at the start of the disassembly.
6737 Implemented additional debugging information in the namespace listing
6739 created during compilation. In addition to the namespace hierarchy, the
6741 pathname to each namespace object is displayed.
6743 Fixed a problem with the disassembler where invalid ACPI tables could
6745 faults or infinite loops.
6747 Fixed an unexpected parse error when using the optional "parameter types"
6748 list in a control method declaration. (Lin Ming) BZ 397
6750 Fixed a problem where two External declarations with the same name did
6752 cause an error (Lin Ming) BZ 509
6754 Implemented support for full TermArgs (adding Argx, Localx and method
6755 invocation) for the ParameterData parameter to the LoadTable operator.
6759 ----------------------------------------
6760 19 December 2007. Summary of changes for version 20071219:
6762 1) ACPI CA Core Subsystem:
6764 Implemented full support for deferred execution for the TermArg string
6765 arguments for DataTableRegion. This enables forward references and full
6766 operand resolution for the three string arguments. Similar to
6768 deferred argument execution.) Lin Ming. BZ 430
6770 Implemented full argument resolution support for the BankValue argument
6772 BankField. Previously, only constants were supported, now any TermArg may
6774 used. Lin Ming BZ 387, 393
6776 Fixed a problem with AcpiGetDevices where the search of a branch of the
6777 device tree could be terminated prematurely. In accordance with the ACPI
6778 specification, the search down the current branch is terminated if a
6780 is both not present and not functional (instead of just not present.)
6784 Fixed a problem where "unknown" GPEs could be allowed to fire repeatedly
6786 the underlying AML code changed the GPE enable registers. Now, any
6788 incoming GPE (no _Lxx/_Exx method and not the EC GPE) is immediately
6790 instead of simply ignored. Rui Zhang.
6792 Fixed a problem with Index Fields where the Index register was
6794 limited to a maximum of 32 bits. Now any size may be used.
6796 Fixed a couple memory leaks associated with "implicit return" objects
6798 the AML Interpreter slack mode is enabled. Lin Ming BZ 349
6800 Example Code and Data Size: These are the sizes for the OS-independent
6801 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6802 debug version of the code includes the debug output trace mechanism and
6804 a much larger code and data size.
6807 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
6808 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
6810 Non-Debug Version: 79.3K Code, 17.2K Data, 96.5K Total
6811 Debug Version: 158.6K Code, 63.8K Data, 222.4K Total
6813 ----------------------------------------
6814 14 November 2007. Summary of changes for version 20071114:
6816 1) ACPI CA Core Subsystem:
6818 Implemented event counters for each of the Fixed Events, the ACPI SCI
6819 (interrupt) itself, and control methods executed. Named
6820 AcpiFixedEventCount[], AcpiSciCount, and AcpiMethodCount respectively.
6822 should be useful for debugging and statistics.
6824 Implemented a new external interface, AcpiGetStatistics, to retrieve the
6825 contents of the various event counters. Returns the current values for
6826 AcpiSciCount, AcpiGpeCount, the AcpiFixedEventCount array, and
6827 AcpiMethodCount. The interface can be expanded in the future if new
6829 are added. Device drivers should use this interface rather than access
6833 Fixed a problem with the FromBCD and ToBCD operators. With some
6835 the ShortDivide function worked incorrectly, causing problems with the
6837 functions with large input values. A truncation from 64-bit to 32-bit
6838 inadvertently occurred. Internal BZ 435. Lin Ming
6840 Fixed a problem with Index references passed as method arguments.
6842 passed as arguments to control methods were dereferenced immediately
6844 control was passed to the called method). The references are now
6846 passed directly to the called method. BZ 5389. Lin Ming
6848 Fixed a problem with CopyObject used in conjunction with the Index
6850 The reference was incorrectly dereferenced before the copy. The reference
6852 now correctly copied. BZ 5391. Lin Ming
6854 Fixed a problem with Control Method references within Package objects.
6856 references are now correctly generated. This completes the package
6857 construction overhaul that began in version 20071019.
6859 Example Code and Data Size: These are the sizes for the OS-independent
6860 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6861 debug version of the code includes the debug output trace mechanism and
6863 a much larger code and data size.
6866 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
6867 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
6869 Non-Debug Version: 79.0K Code, 17.2K Data, 96.2K Total
6870 Debug Version: 157.9K Code, 63.6K Data, 221.5K Total
6873 2) iASL Compiler/Disassembler and Tools:
6875 The AcpiExec utility now installs handlers for all of the predefined
6876 Operation Region types. New types supported are: PCI_Config, CMOS, and
6879 Fixed a problem with the 64-bit version of AcpiExec where the extended
6881 bit) address fields for the DSDT and FACS within the FADT were not being
6882 used, causing truncation of the upper 32-bits of these addresses. Lin
6886 ----------------------------------------
6887 19 October 2007. Summary of changes for version 20071019:
6889 1) ACPI CA Core Subsystem:
6891 Fixed a problem with the Alias operator when the target of the alias is a
6892 named ASL operator that opens a new scope -- Scope, Device,
6894 Processor, and ThermalZone. In these cases, any children of the original
6895 operator could not be accessed via the alias, potentially causing
6897 AE_NOT_FOUND exceptions. (BZ 9067)
6899 Fixed a problem with the Package operator where all named references were
6900 created as object references and left otherwise unresolved. According to
6902 ACPI specification, a Package can only contain Data Objects or references
6904 control methods. The implication is that named references to Data Objects
6905 (Integer, Buffer, String, Package, BufferField, Field) should be resolved
6906 immediately upon package creation. This is the approach taken with this
6907 change. References to all other named objects (Methods, Devices, Scopes,
6908 etc.) are all now properly created as reference objects. (BZ 5328)
6910 Reverted a change to Notify handling that was introduced in version
6911 20070508. This version changed the Notify handling from asynchronous to
6912 fully synchronous (Device driver Notify handling with respect to the
6914 ASL operator). It was found that this change caused more problems than it
6915 solved and was removed by most users.
6917 Fixed a problem with the Increment and Decrement operators where the type
6919 the target object could be unexpectedly and incorrectly changed. (BZ 353)
6922 Fixed a problem with the Load and LoadTable operators where the table
6923 location within the namespace was ignored. Instead, the table was always
6924 loaded into the root or current scope. Lin Ming.
6926 Fixed a problem with the Load operator when loading a table from a buffer
6927 object. The input buffer was prematurely zeroed and/or deleted. (BZ 577)
6929 Fixed a problem with the Debug object where a store of a DdbHandle
6931 object to the Debug object could cause a fault.
6933 Added a table checksum verification for the Load operator, in the case
6935 the load is from a buffer. (BZ 578).
6937 Implemented additional parameter validation for the LoadTable operator.
6939 length of the input strings SignatureString, OemIdString, and OemTableId
6941 now checked for maximum lengths. (BZ 582) Lin Ming.
6943 Example Code and Data Size: These are the sizes for the OS-independent
6944 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6945 debug version of the code includes the debug output trace mechanism and
6947 a much larger code and data size.
6950 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
6951 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
6953 Non-Debug Version: 78.8K Code, 17.2K Data, 96.0K Total
6954 Debug Version: 157.2K Code, 63.4K Data, 220.6K Total
6957 2) iASL Compiler/Disassembler:
6959 Fixed a problem where if a single file was specified and the file did not
6960 exist, no error message was emitted. (Introduced with wildcard support in
6963 ----------------------------------------
6964 19 September 2007. Summary of changes for version 20070919:
6966 1) ACPI CA Core Subsystem:
6968 Designed and implemented new external interfaces to install and remove
6969 handlers for ACPI table-related events. Current events that are defined
6971 LOAD and UNLOAD. These interfaces allow the host to track ACPI tables as
6972 they are dynamically loaded and unloaded. See AcpiInstallTableHandler and
6973 AcpiRemoveTableHandler. (Lin Ming and Bob Moore)
6975 Fixed a problem where the use of the AcpiGbl_AllMethodsSerialized flag
6976 (acpi_serialized option on Linux) could cause some systems to hang during
6977 initialization. (Bob Moore) BZ 8171
6979 Fixed a problem where objects of certain types (Device, ThermalZone,
6980 Processor, PowerResource) can be not found if they are declared and
6981 referenced from within the same control method (Lin Ming) BZ 341
6983 Example Code and Data Size: These are the sizes for the OS-independent
6984 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
6985 debug version of the code includes the debug output trace mechanism and
6987 a much larger code and data size.
6990 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
6991 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
6993 Non-Debug Version: 78.5K Code, 17.1K Data, 95.6K Total
6994 Debug Version: 156.7K Code, 63.2K Data, 219.9K Total
6997 2) iASL Compiler/Disassembler:
6999 Implemented support to allow multiple files to be compiled/disassembled
7002 single invocation. This includes command line wildcard support for both
7004 Windows and Unix versions of the compiler. This feature simplifies the
7005 disassembly and compilation of multiple ACPI tables in a single
7008 ----------------------------------------
7009 08 May 2007. Summary of changes for version 20070508:
7011 1) ACPI CA Core Subsystem:
7013 Implemented a Microsoft compatibility design change for the handling of
7015 Notify AML operator. Previously, notify handlers were dispatched and
7016 executed completely asynchronously in a deferred thread. The new design
7017 still executes the notify handlers in a different thread, but the
7019 thread that executed the Notify() now waits at a synchronization point
7021 the notify handler to complete. Some machines depend on a synchronous
7023 operator in order to operate correctly.
7025 Implemented support to allow Package objects to be passed as method
7026 arguments to the external AcpiEvaluateObject interface. Previously, this
7027 would return the AE_NOT_IMPLEMENTED exception. This feature had not been
7028 implemented since there were no reserved control methods that required it
7031 Fixed a problem with the internal FADT conversion where ACPI 1.0 FADTs
7033 contained invalid non-zero values in reserved fields could cause later
7034 failures because these fields have meaning in later revisions of the
7036 For incoming ACPI 1.0 FADTs, these fields are now always zeroed. (The
7038 are: Preferred_PM_Profile, PSTATE_CNT, CST_CNT, and IAPC_BOOT_FLAGS.)
7040 Fixed a problem where the Global Lock handle was not properly updated if
7042 thread that acquired the Global Lock via executing AML code then
7044 to acquire the lock via the AcpiAcquireGlobalLock interface. Reported by
7048 Fixed a problem in AcpiEvDeleteGpeXrupt where the global interrupt list
7049 could be corrupted if the interrupt being removed was at the head of the
7050 list. Reported by Linn Crosetto.
7052 Example Code and Data Size: These are the sizes for the OS-independent
7053 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7054 debug version of the code includes the debug output trace mechanism and
7056 a much larger code and data size.
7059 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
7060 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
7062 Non-Debug Version: 78.3K Code, 17.0K Data, 95.3K Total
7063 Debug Version: 156.3K Code, 63.1K Data, 219.4K Total
7065 ----------------------------------------
7066 20 March 2007. Summary of changes for version 20070320:
7068 1) ACPI CA Core Subsystem:
7070 Implemented a change to the order of interpretation and evaluation of AML
7071 operand objects within the AML interpreter. The interpreter now evaluates
7072 operands in the order that they appear in the AML stream (and the
7073 corresponding ASL code), instead of in the reverse order (after the
7075 operand list has been parsed). The previous behavior caused several
7077 incompatibilities with the Microsoft AML interpreter as well as being
7078 somewhat non-intuitive. BZ 7871, local BZ 263. Valery Podrezov.
7080 Implemented a change to the ACPI Global Lock support. All interfaces to
7082 global lock now allow the same thread to acquire the lock multiple times.
7083 This affects the AcpiAcquireGlobalLock external interface to the global
7085 as well as the internal use of the global lock to support AML fields -- a
7086 control method that is holding the global lock can now simultaneously
7088 AML fields that require global lock protection. Previously, in both
7090 this would have resulted in an AE_ALREADY_ACQUIRED exception. The change
7092 AcpiAcquireGlobalLock is of special interest to drivers for the Embedded
7093 Controller. There is no change to the behavior of the AML Acquire
7095 as this can already be used to acquire a mutex multiple times by the same
7096 thread. BZ 8066. With assistance from Alexey Starikovskiy.
7098 Fixed a problem where invalid objects could be referenced in the AML
7099 Interpreter after error conditions. During operand evaluation, ensure
7101 the internal "Return Object" field is cleared on error and only valid
7102 pointers are stored there. Caused occasional access to deleted objects
7104 resulted in "large reference count" warning messages. Valery Podrezov.
7106 Fixed a problem where an AE_STACK_OVERFLOW internal exception could occur
7108 deeply nested control method invocations. BZ 7873, local BZ 487. Valery
7111 Fixed an internal problem with the handling of result objects on the
7112 interpreter result stack. BZ 7872. Valery Podrezov.
7114 Removed obsolete code that handled the case where AML_NAME_OP is the
7116 of a reference (Reference.Opcode). This code was no longer necessary. BZ
7117 7874. Valery Podrezov.
7119 Removed obsolete ACPI_NO_INTEGER64_SUPPORT from two header files. This
7122 remnant from the previously discontinued 16-bit support.
7124 Example Code and Data Size: These are the sizes for the OS-independent
7125 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7126 debug version of the code includes the debug output trace mechanism and
7128 a much larger code and data size.
7131 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
7132 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
7134 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
7135 Debug Version: 155.9K Code, 63.1K Data, 219.0K Total
7137 ----------------------------------------
7138 26 January 2007. Summary of changes for version 20070126:
7140 1) ACPI CA Core Subsystem:
7142 Added the 2007 copyright to all module headers and signons. This affects
7143 virtually every file in the ACPICA core subsystem, the iASL compiler, and
7146 Implemented a fix for an incorrect parameter passed to AcpiTbDeleteTable
7147 during a table load. A bad pointer was passed in the case where the DSDT
7149 overridden, causing a fault in this case.
7151 Example Code and Data Size: These are the sizes for the OS-independent
7152 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7153 debug version of the code includes the debug output trace mechanism and
7155 a much larger code and data size.
7158 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
7159 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
7161 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
7162 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
7164 ----------------------------------------
7165 15 December 2006. Summary of changes for version 20061215:
7167 1) ACPI CA Core Subsystem:
7169 Support for 16-bit ACPICA has been completely removed since it is no
7171 necessary and it clutters the code. All 16-bit macros, types, and
7172 conditional compiles have been removed, cleaning up and simplifying the
7174 across the entire subsystem. DOS support is no longer needed since the
7175 bootable Linux firmware kit is now available.
7177 The handler for the Global Lock is now removed during AcpiTerminate to
7178 enable a clean subsystem restart, via the implementation of the
7179 AcpiEvRemoveGlobalLockHandler function. (With assistance from Joel Bretz,
7182 Implemented enhancements to the multithreading support within the
7184 to enable improved multithreading debugging and evaluation of the
7188 Debugger: Enhanced the Statistics/Memory command to emit the total
7190 memory used during the execution, as well as the maximum memory consumed
7192 each of the various object types. (Valery Podrezov)
7194 Example Code and Data Size: These are the sizes for the OS-independent
7195 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7196 debug version of the code includes the debug output trace mechanism and
7198 a much larger code and data size.
7201 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
7202 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
7204 Non-Debug Version: 78.0K Code, 17.1K Data, 95.1K Total
7205 Debug Version: 155.8K Code, 63.3K Data, 219.1K Total
7208 2) iASL Compiler/Disassembler and Tools:
7210 AcpiExec: Implemented a new option (-m) to display full memory use
7211 statistics upon subsystem/program termination. (Valery Podrezov)
7213 ----------------------------------------
7214 09 November 2006. Summary of changes for version 20061109:
7216 1) ACPI CA Core Subsystem:
7218 Optimized the Load ASL operator in the case where the source operand is
7220 operation region. Simply map the operation region memory, instead of
7221 performing a bytewise read. (Region must be of type SystemMemory, see
7224 Fixed the Load ASL operator for the case where the source operand is a
7225 region field. A buffer object is also allowed as the source operand. BZ
7228 Fixed a problem where the Load ASL operator allowed the source operand to
7230 an operation region of any type. It is now restricted to regions of type
7231 SystemMemory, as per the ACPI specification. BZ 481
7233 Additional cleanup and optimizations for the new Table Manager code.
7235 AcpiEnable will now fail if all of the required ACPI tables are not
7237 (FADT, FACS, DSDT). BZ 477
7239 Added #pragma pack(8/4) to acobject.h to ensure that the structures in
7241 header are always compiled as aligned. The ACPI_OPERAND_OBJECT has been
7242 manually optimized to be aligned and will not work if it is byte-packed.
7244 Example Code and Data Size: These are the sizes for the OS-independent
7245 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7246 debug version of the code includes the debug output trace mechanism and
7248 a much larger code and data size.
7251 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
7252 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
7254 Non-Debug Version: 77.9K Code, 17.0K Data, 94.9K Total
7255 Debug Version: 155.2K Code, 63.1K Data, 218.3K Total
7258 2) iASL Compiler/Disassembler and Tools:
7260 Fixed a problem where the presence of the _OSI predefined control method
7261 within complex expressions could cause an internal compiler error.
7263 AcpiExec: Implemented full region support for multiple address spaces.
7264 SpaceId is now part of the REGION object. BZ 429
7266 ----------------------------------------
7267 11 October 2006. Summary of changes for version 20061011:
7269 1) ACPI CA Core Subsystem:
7271 Completed an AML interpreter performance enhancement for control method
7272 execution. Previously a 2-pass parse/execution, control methods are now
7273 completely parsed and executed in a single pass. This improves overall
7274 interpreter performance by ~25%, reduces code size, and reduces CPU stack
7275 use. (Valery Podrezov + interpreter changes in version 20051202 that
7276 eliminated namespace loading during the pass one parse.)
7278 Implemented _CID support for PCI Root Bridge detection. If the _HID does
7280 match the predefined PCI Root Bridge IDs, the _CID list (if present) is
7282 obtained and also checked for an ID match.
7284 Implemented additional support for the PCI _ADR execution: upsearch until
7286 device scope is found before executing _ADR. This allows PCI_Config
7287 operation regions to be declared locally within control methods
7291 Fixed a problem with a possible race condition between threads executing
7292 AcpiWalkNamespace and the AML interpreter. This condition was removed by
7293 modifying AcpiWalkNamespace to (by default) ignore all temporary
7295 entries created during any concurrent control method execution. An
7296 additional namespace race condition is known to exist between
7297 AcpiWalkNamespace and the Load/Unload ASL operators and is still under
7300 Restructured the AML ParseLoop function, breaking it into several
7301 subfunctions in order to reduce CPU stack use and improve
7305 AcpiGetHandle: Fix for parameter validation to detect invalid
7307 of prefix handle and pathname. BZ 478
7309 Example Code and Data Size: These are the sizes for the OS-independent
7310 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7311 debug version of the code includes the debug output trace mechanism and
7313 a much larger code and data size.
7316 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
7317 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
7319 Non-Debug Version: 78.1K Code, 17.1K Data, 95.2K Total
7320 Debug Version: 155.4K Code, 63.1K Data, 218.5K Total
7322 2) iASL Compiler/Disassembler and Tools:
7324 Ported the -g option (get local ACPI tables) to the new ACPICA Table
7326 to restore original behavior.
7328 ----------------------------------------
7329 27 September 2006. Summary of changes for version 20060927:
7331 1) ACPI CA Core Subsystem:
7333 Removed the "Flags" parameter from AcpiGetRegister and AcpiSetRegister.
7334 These functions now use a spinlock for mutual exclusion and the interrupt
7335 level indication flag is not needed.
7337 Fixed a problem with the Global Lock where the lock could appear to be
7338 obtained before it is actually obtained. The global lock semaphore was
7339 inadvertently created with one unit instead of zero units. (BZ 464)
7343 Fixed a possible memory leak and fault in AcpiExResolveObjectToValue
7345 a read from a buffer or region field. (BZ 458) Fiodor Suietov.
7347 Example Code and Data Size: These are the sizes for the OS-independent
7348 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7349 debug version of the code includes the debug output trace mechanism and
7351 a much larger code and data size.
7354 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
7355 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
7357 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
7358 Debug Version: 154.6K Code, 63.0K Data, 217.6K Total
7361 2) iASL Compiler/Disassembler and Tools:
7363 Fixed a compilation problem with the pre-defined Resource Descriptor
7365 names where an "object does not exist" error could be incorrectly
7367 if the parent ResourceTemplate pathname places the template within a
7368 different namespace scope than the current scope. (BZ 7212)
7370 Fixed a problem where the compiler could hang after syntax errors
7372 in an ElseIf construct. (BZ 453)
7374 Fixed a problem with the AmlFilename parameter to the DefinitionBlock()
7375 operator. An incorrect output filename was produced when this parameter
7377 a null string (""). Now, the original input filename is used as the AML
7378 output filename, with an ".aml" extension.
7380 Implemented a generic batch command mode for the AcpiExec utility
7382 any AML debugger command) (Valery Podrezov).
7384 ----------------------------------------
7385 12 September 2006. Summary of changes for version 20060912:
7387 1) ACPI CA Core Subsystem:
7389 Enhanced the implementation of the "serialized mode" of the interpreter
7390 (enabled via the AcpiGbl_AllMethodsSerialized flag.) When this mode is
7391 specified, instead of creating a serialization semaphore per control
7393 the interpreter lock is simply no longer released before a blocking
7394 operation during control method execution. This effectively makes the AML
7395 Interpreter single-threaded. The overhead of a semaphore per-method is
7398 Fixed a regression where an error was no longer emitted if a control
7400 attempts to create 2 objects of the same name. This once again returns
7401 AE_ALREADY_EXISTS. When this exception occurs, it invokes the mechanism
7403 will dynamically serialize the control method to possible prevent future
7406 Integrated a fix for a problem with PCI Express HID detection in the PCI
7407 Config Space setup procedure. (BZ 7145)
7409 Moved all FADT-related functions to a new file, tbfadt.c. Eliminated the
7410 AcpiHwInitialize function - the FADT registers are now validated when the
7413 Added two new warnings during FADT verification - 1) if the FADT is
7415 than the largest known FADT version, and 2) if there is a mismatch
7418 32-bit block address and the 64-bit X counterpart (when both are non-
7421 Example Code and Data Size: These are the sizes for the OS-independent
7422 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7423 debug version of the code includes the debug output trace mechanism and
7425 a much larger code and data size.
7428 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
7429 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
7431 Non-Debug Version: 77.9K Code, 17.1K Data, 95.0K Total
7432 Debug Version: 154.7K Code, 63.0K Data, 217.7K Total
7435 2) iASL Compiler/Disassembler and Tools:
7437 Fixed a problem with the implementation of the Switch() operator where
7439 temporary variable was declared too close to the actual Switch, instead
7441 at method level. This could cause a problem if the Switch() operator is
7442 within a while loop, causing an error on the second iteration. (BZ 460)
7444 Disassembler - fix for error emitted for unknown type for target of scope
7445 operator. Now, ignore it and continue.
7447 Disassembly of an FADT now verifies the input FADT and reports any errors
7448 found. Fix for proper disassembly of full-sized (ACPI 2.0) FADTs.
7450 Disassembly of raw data buffers with byte initialization data now
7452 each output line with the current buffer offset.
7454 Disassembly of ASF! table now includes all variable-length data fields at
7455 the end of some of the subtables.
7457 The disassembler now emits a comment if a buffer appears to be a
7458 ResourceTemplate, but cannot be disassembled as such because the EndTag
7460 not appear at the very end of the buffer.
7462 AcpiExec - Added the "-t" command line option to enable the serialized
7464 of the AML interpreter.
7466 ----------------------------------------
7467 31 August 2006. Summary of changes for version 20060831:
7469 1) ACPI CA Core Subsystem:
7471 Miscellaneous fixes for the Table Manager:
7472 - Correctly initialize internal common FADT for all 64-bit "X" fields
7473 - Fixed a couple table mapping issues during table load
7474 - Fixed a couple alignment issues for IA64
7475 - Initialize input array to zero in AcpiInitializeTables
7476 - Additional parameter validation for AcpiGetTable, AcpiGetTableHeader,
7479 Change for GPE support: when a "wake" GPE is received, all wake GPEs are
7481 immediately disabled to prevent the waking GPE from firing again and to
7482 prevent other wake GPEs from interrupting the wake process.
7484 Added the AcpiGpeCount global that tracks the number of processed GPEs,
7486 be used for debugging systems with a large number of ACPI interrupts.
7488 Implemented support for the "DMAR" ACPI table (DMA Redirection Table) in
7489 both the ACPICA headers and the disassembler.
7491 Example Code and Data Size: These are the sizes for the OS-independent
7492 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7493 debug version of the code includes the debug output trace mechanism and
7495 a much larger code and data size.
7498 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
7499 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
7501 Non-Debug Version: 77.9K Code, 16.7K Data, 94.6K Total
7502 Debug Version: 154.9K Code, 62.6K Data, 217.5K Total
7505 2) iASL Compiler/Disassembler and Tools:
7507 Disassembler support for the DMAR ACPI table.
7509 ----------------------------------------
7510 23 August 2006. Summary of changes for version 20060823:
7512 1) ACPI CA Core Subsystem:
7514 The Table Manager component has been completely redesigned and
7515 reimplemented. The new design is much simpler, and reduces the overall
7517 and data size of the kernel-resident ACPICA by approximately 5%. Also, it
7519 now possible to obtain the ACPI tables very early during kernel
7520 initialization, even before dynamic memory management is initialized.
7521 (Alexey Starikovskiy, Fiodor Suietov, Bob Moore)
7523 Obsolete ACPICA interfaces:
7525 - AcpiGetFirmwareTable: Use AcpiGetTable instead (works at early kernel
7528 - AcpiLoadTable: Not needed.
7529 - AcpiUnloadTable: Not needed.
7531 New ACPICA interfaces:
7533 - AcpiInitializeTables: Must be called before the table manager can be
7535 - AcpiReallocateRootTable: Used to transfer the root table to dynamically
7536 allocated memory after it becomes available.
7537 - AcpiGetTableByIndex: Allows the host to easily enumerate all ACPI
7541 Other ACPICA changes:
7543 - AcpiGetTableHeader returns the actual mapped table header, not a copy.
7545 AcpiOsUnmapMemory to free this mapping.
7546 - AcpiGetTable returns the actual mapped table. The mapping is managed
7547 internally and must not be deleted by the caller. Use of this interface
7548 causes no additional dynamic memory allocation.
7549 - AcpiFindRootPointer: Support for physical addressing has been
7551 it appeared to be unused.
7552 - The interface to AcpiOsMapMemory has changed to be consistent with the
7553 other allocation interfaces.
7554 - The interface to AcpiOsGetRootPointer has changed to eliminate
7557 - ACPI_PHYSICAL_ADDRESS is now 32 bits on 32-bit platforms, 64 bits on
7559 bit platforms. Was previously 64 bits on all platforms.
7560 - The interface to the ACPI Global Lock acquire/release macros have
7562 slightly since ACPICA no longer keeps a local copy of the FACS with a
7563 constructed pointer to the actual global lock.
7565 Porting to the new table manager:
7567 - AcpiInitializeTables: Must be called once, and can be called anytime
7568 during the OS initialization process. It allows the host to specify an
7570 of memory to be used to store the internal version of the RSDT/XSDT (root
7571 table). This allows the host to access ACPI tables before memory
7573 is initialized and running.
7574 - AcpiReallocateRootTable: Can be called after memory management is
7576 to copy the root table to a dynamically allocated array, freeing up the
7577 scratch memory specified in the call to AcpiInitializeTables.
7578 - AcpiSubsystemInitialize: This existing interface is independent of the
7579 Table Manager, and does not have to be called before the Table Manager
7581 be used, it only must be called before the rest of ACPICA can be used.
7582 - ACPI Tables: Some changes have been made to the names and structure of
7584 actbl.h and actbl1.h header files and may require changes to existing
7586 For example, bitfields have been completely removed because of their lack
7588 portability across C compilers.
7589 - Update interfaces to the Global Lock acquire/release macros if local
7590 versions are used. (see acwin.h)
7592 Obsolete files: tbconvrt.c, tbget.c, tbgetall.c, tbrsdt.c
7596 Example Code and Data Size: These are the sizes for the OS-independent
7597 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7598 debug version of the code includes the debug output trace mechanism and
7600 a much larger code and data size.
7603 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
7604 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
7606 Non-Debug Version: 77.8K Code, 16.5K Data, 94.3K Total
7607 Debug Version: 154.6K Code, 62.3K Data, 216.9K Total
7610 2) iASL Compiler/Disassembler and Tools:
7612 No changes for this release.
7614 ----------------------------------------
7615 21 July 2006. Summary of changes for version 20060721:
7617 1) ACPI CA Core Subsystem:
7619 The full source code for the ASL test suite used to validate the iASL
7620 compiler and the ACPICA core subsystem is being released with the ACPICA
7621 source for the first time. The source is contained in a separate package
7623 consists of over 1100 files that exercise all ASL/AML operators. The
7625 should appear on the Intel/ACPI web site shortly. (Valery Podrezov,
7629 Completed a new design and implementation for support of the ACPI Global
7630 Lock. On the OS side, the global lock is now treated as a standard AML
7631 mutex. Previously, multiple OS threads could "acquire" the global lock
7632 simultaneously. However, this could cause the BIOS to be starved out of
7634 lock - especially in cases such as the Embedded Controller driver where
7635 there is a tight coupling between the OS and the BIOS.
7637 Implemented an optimization for the ACPI Global Lock interrupt mechanism.
7638 The Global Lock interrupt handler no longer queues the execution of a
7639 separate thread to signal the global lock semaphore. Instead, the
7641 is signaled directly from the interrupt handler.
7643 Implemented support within the AML interpreter for package objects that
7644 contain a larger AML length (package list length) than the package
7646 count. In this case, the length of the package is truncated to match the
7647 package element count. Some BIOS code apparently modifies the package
7649 on the fly, and this change supports this behavior. Provides
7651 with the MS AML interpreter. (With assistance from Fiodor Suietov)
7653 Implemented a temporary fix for the BankValue parameter of a Bank Field
7655 support all constant values, now including the Zero and One opcodes.
7656 Evaluation of this parameter must eventually be converted to a full
7658 evaluation. A not-implemented error is now returned (temporarily) for
7660 constant values for this parameter.
7662 Fixed problem reports (Fiodor Suietov) integrated:
7663 - Fix for premature object deletion after CopyObject on Operation Region
7667 Example Code and Data Size: These are the sizes for the OS-independent
7668 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7669 debug version of the code includes the debug output trace mechanism and
7671 a much larger code and data size.
7674 Non-Debug Version: 80.7K Code, 18.0K Data, 98.7K Total
7675 Debug Version: 160.9K Code, 65.1K Data, 226.0K Total
7677 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
7678 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
7681 2) iASL Compiler/Disassembler and Tools:
7683 No changes for this release.
7685 ----------------------------------------
7686 07 July 2006. Summary of changes for version 20060707:
7688 1) ACPI CA Core Subsystem:
7690 Added the ACPI_PACKED_POINTERS_NOT_SUPPORTED macro to support C compilers
7691 that do not allow the initialization of address pointers within packed
7692 structures - even though the hardware itself may support misaligned
7693 transfers. Some of the debug data structures are packed by default to
7696 Added an error message for the case where AcpiOsGetThreadId() returns
7698 A non-zero value is required by the core ACPICA code to ensure the proper
7699 operation of AML mutexes and recursive control methods.
7701 The DSDT is now the only ACPI table that determines whether the AML
7702 interpreter is in 32-bit or 64-bit mode. Not really a functional change,
7704 the hooks for per-table 32/64 switching have been removed from the code.
7706 clarification to the ACPI specification is forthcoming in ACPI 3.0B.
7708 Fixed a possible leak of an OwnerID in the error path of
7709 AcpiTbInitTableDescriptor (tbinstal.c), and migrated all table OwnerID
7710 deletion to a single place in AcpiTbUninstallTable to correct possible
7712 when using the AcpiTbDeleteTablesByType interface (with assistance from
7715 Fixed a problem with Serialized control methods where the semaphore
7716 associated with the method could be over-signaled after multiple method
7719 Fixed two issues with the locking of the internal namespace data
7721 Both the Unload() operator and AcpiUnloadTable interface now lock the
7722 namespace during the namespace deletion associated with the table unload
7723 (with assistance from Linn Crosetto.)
7725 Fixed problem reports (Valery Podrezov) integrated:
7726 - Eliminate unnecessary memory allocation for CreateXxxxField (BZ 5426)
7728 Fixed problem reports (Fiodor Suietov) integrated:
7729 - Incomplete cleanup branches in AcpiTbGetTableRsdt (BZ 369)
7730 - On Address Space handler deletion, needless deactivation call (BZ 374)
7731 - AcpiRemoveAddressSpaceHandler: validate Device handle parameter (BZ
7733 - Possible memory leak, Notify sub-objects of Processor, Power,
7736 - AcpiRemoveAddressSpaceHandler: validate Handler parameter (BZ 378)
7737 - Minimum Length of RSDT should be validated (BZ 379)
7738 - AcpiRemoveNotifyHandler: return AE_NOT_EXIST if Processor Obj has no
7740 - AcpiUnloadTable: return AE_NOT_EXIST if no table of specified type
7744 Example Code and Data Size: These are the sizes for the OS-independent
7745 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7746 debug version of the code includes the debug output trace mechanism and
7748 a much larger code and data size.
7751 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
7752 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
7754 Non-Debug Version: 80.7K Code, 17.9K Data, 98.6K Total
7755 Debug Version: 161.0K Code, 65.1K Data, 226.1K Total
7758 2) iASL Compiler/Disassembler and Tools:
7760 Fixed problem reports:
7761 Compiler segfault when ASL contains a long (>1024) String declaration (BZ
7764 ----------------------------------------
7765 23 June 2006. Summary of changes for version 20060623:
7767 1) ACPI CA Core Subsystem:
7769 Implemented a new ACPI_SPINLOCK type for the OSL lock interfaces. This
7770 allows the type to be customized to the host OS for improved efficiency
7771 (since a spinlock is usually a very small object.)
7773 Implemented support for "ignored" bits in the ACPI registers. According
7775 the ACPI specification, these bits should be preserved when writing the
7776 registers via a read/modify/write cycle. There are 3 bits preserved in
7778 manner: PM1_CONTROL[0] (SCI_EN), PM1_CONTROL[9], and PM1_STATUS[11].
7780 Implemented the initial deployment of new OSL mutex interfaces. Since
7782 host operating systems have separate mutex and semaphore objects, this
7783 feature was requested. The base code now uses mutexes (and the new mutex
7784 interfaces) wherever a binary semaphore was used previously. However, for
7785 the current release, the mutex interfaces are defined as macros to map
7787 to the existing semaphore interfaces. Therefore, no OSL changes are
7789 at this time. (See acpiosxf.h)
7791 Fixed several problems with the support for the control method SyncLevel
7792 parameter. The SyncLevel now works according to the ACPI specification
7794 in concert with the Mutex SyncLevel parameter, since the current
7796 is a property of the executing thread. Mutual exclusion for control
7798 is now implemented with a mutex instead of a semaphore.
7800 Fixed three instances of the use of the C shift operator in the bitfield
7801 support code (exfldio.c) to avoid the use of a shift value larger than
7803 target data width. The behavior of C compilers is undefined in this case
7805 can cause unpredictable results, and therefore the case must be detected
7807 avoided. (Fiodor Suietov)
7809 Added an info message whenever an SSDT or OEM table is loaded dynamically
7810 via the Load() or LoadTable() ASL operators. This should improve
7812 capability since it will show exactly what tables have been loaded
7814 the tables present in the RSDT/XSDT.)
7816 Example Code and Data Size: These are the sizes for the OS-independent
7817 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7818 debug version of the code includes the debug output trace mechanism and
7820 a much larger code and data size.
7823 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
7824 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
7826 Non-Debug Version: 80.5K Code, 17.8K Data, 98.3K Total
7827 Debug Version: 160.8K Code, 64.8K Data, 225.6K Total
7830 2) iASL Compiler/Disassembler and Tools:
7832 No changes for this release.
7834 ----------------------------------------
7835 08 June 2006. Summary of changes for version 20060608:
7837 1) ACPI CA Core Subsystem:
7839 Converted the locking mutex used for the ACPI hardware to a spinlock.
7841 change should eliminate all problems caused by attempting to acquire a
7842 semaphore at interrupt level, and it means that all ACPICA external
7843 interfaces that directly access the ACPI hardware can be safely called
7845 interrupt level. OSL code that implements the semaphore interfaces should
7847 able to eliminate any workarounds for being called at interrupt level.
7849 Fixed a regression introduced in 20060526 where the ACPI device
7850 initialization could be prematurely aborted with an AE_NOT_FOUND if a
7852 did not have an optional _INI method.
7854 Fixed an IndexField issue where a write to the Data Register should be
7855 limited in size to the AccessSize (width) of the IndexField itself. (BZ
7859 Fixed problem reports (Valery Podrezov) integrated:
7860 - Allow store of ThermalZone objects to Debug object (BZ 5369/5370)
7862 Fixed problem reports (Fiodor Suietov) integrated:
7863 - AcpiGetTableHeader doesn't handle multiple instances correctly (BZ 364)
7865 Removed four global mutexes that were obsolete and were no longer being
7868 Example Code and Data Size: These are the sizes for the OS-independent
7869 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7870 debug version of the code includes the debug output trace mechanism and
7872 a much larger code and data size.
7875 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
7876 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
7878 Non-Debug Version: 80.0K Code, 17.6K Data, 97.6K Total
7879 Debug Version: 160.2K Code, 64.7K Data, 224.9K Total
7882 2) iASL Compiler/Disassembler and Tools:
7884 Fixed a fault when using -g option (get tables from registry) on Windows
7887 Fixed problem reports integrated:
7888 - Generate error if CreateField NumBits parameter is zero. (BZ 405)
7889 - Fault if Offset/Length in Field unit is very large (BZ 432, Fiodor
7891 - Global table revision override (-r) is ignored (BZ 413)
7893 ----------------------------------------
7894 26 May 2006. Summary of changes for version 20060526:
7896 1) ACPI CA Core Subsystem:
7898 Restructured, flattened, and simplified the internal interfaces for
7899 namespace object evaluation - resulting in smaller code, less CPU stack
7901 and fewer interfaces. (With assistance from Mikhail Kouzmich)
7903 Fixed a problem with the CopyObject operator where the first parameter
7905 not typed correctly for the parser, interpreter, compiler, and
7907 Caused various errors and unexpected behavior.
7909 Fixed a problem where a ShiftLeft or ShiftRight of more than 64 bits
7910 produced incorrect results with some C compilers. Since the behavior of C
7911 compilers when the shift value is larger than the datatype width is
7912 apparently not well defined, the interpreter now detects this condition
7914 simply returns zero as expected in all such cases. (BZ 395)
7916 Fixed problem reports (Valery Podrezov) integrated:
7917 - Update String-to-Integer conversion to match ACPI 3.0A spec (BZ 5329)
7918 - Allow interpreter to handle nested method declarations (BZ 5361)
7920 Fixed problem reports (Fiodor Suietov) integrated:
7921 - AcpiTerminate doesn't free debug memory allocation list objects (BZ
7923 - After Core Subsystem shutdown, AcpiSubsystemStatus returns AE_OK (BZ
7925 - AcpiOsUnmapMemory for RSDP can be invoked inconsistently (BZ 357)
7926 - Resource Manager should return AE_TYPE for non-device objects (BZ 358)
7927 - Incomplete cleanup branch in AcpiNsEvaluateRelative (BZ 359)
7928 - Use AcpiOsFree instead of ACPI_FREE in AcpiRsSetSrsMethodData (BZ 360)
7929 - Incomplete cleanup branch in AcpiPsParseAml (BZ 361)
7930 - Incomplete cleanup branch in AcpiDsDeleteWalkState (BZ 362)
7931 - AcpiGetTableHeader returns AE_NO_ACPI_TABLES until DSDT is loaded (BZ
7933 - Status of the Global Initialization Handler call not used (BZ 366)
7934 - Incorrect object parameter to Global Initialization Handler (BZ 367)
7936 Example Code and Data Size: These are the sizes for the OS-independent
7937 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7938 debug version of the code includes the debug output trace mechanism and
7940 a much larger code and data size.
7943 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
7944 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
7946 Non-Debug Version: 80.0K Code, 17.7K Data, 97.7K Total
7947 Debug Version: 160.3K Code, 64.9K Data, 225.2K Total
7950 2) iASL Compiler/Disassembler and Tools:
7952 Modified the parser to allow the names IO, DMA, and IRQ to be used as
7953 namespace identifiers with no collision with existing resource descriptor
7954 macro names. This provides compatibility with other ASL compilers and is
7955 most useful for disassembly/recompilation of existing tables without
7957 errors. (With assistance from Thomas Renninger)
7959 Disassembler: fixed an incorrect disassembly problem with the
7960 DataTableRegion and CopyObject operators. Fixed a possible fault during
7961 disassembly of some Alias operators.
7963 ----------------------------------------
7964 12 May 2006. Summary of changes for version 20060512:
7966 1) ACPI CA Core Subsystem:
7968 Replaced the AcpiOsQueueForExecution interface with a new interface named
7969 AcpiOsExecute. The major difference is that the new interface does not
7971 a Priority parameter, this appeared to be useless and has been replaced
7974 Type parameter. The Type tells the host what type of execution is being
7975 requested, such as global lock handler, notify handler, GPE handler, etc.
7976 This allows the host to queue and execute the request as appropriate for
7978 request type, possibly using different work queues and different
7980 for the various request types. This enables fixes for multithreading
7981 deadlock problems such as BZ #5534, and will require changes to all
7983 OS interface layers. (Alexey Starikovskiy and Bob Moore)
7985 Fixed a possible memory leak associated with the support for the so-
7987 "implicit return" ACPI extension. Reported by FreeBSD, BZ #6514. (Fiodor
7990 Fixed a problem with the Load() operator where a table load from an
7991 operation region could overwrite an internal table buffer by up to 7
7993 and cause alignment faults on IPF systems. (With assistance from Luming
7996 Example Code and Data Size: These are the sizes for the OS-independent
7997 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
7998 debug version of the code includes the debug output trace mechanism and
8000 a much larger code and data size.
8003 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
8004 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
8006 Non-Debug Version: 79.8K Code, 17.7K Data, 97.5K Total
8007 Debug Version: 160.5K Code, 65.1K Data, 225.6K Total
8011 2) iASL Compiler/Disassembler and Tools:
8013 Disassembler: Implemented support to cross reference the internal
8015 and automatically generate ASL External() statements for symbols not
8017 within the current table being disassembled. This will simplify the
8018 disassembly and recompilation of interdependent tables such as SSDTs
8020 these statements will no longer have to be added manually.
8022 Disassembler: Implemented experimental support to automatically detect
8023 invocations of external control methods and generate appropriate
8025 statements. This is problematic because the AML cannot be correctly
8027 until the number of arguments for each control method is known.
8029 standalone method invocations and invocations as the source operand of a
8030 Store() statement are supported.
8032 Disassembler: Implemented support for the ASL pseudo-operators LNotEqual,
8033 LLessEqual, and LGreaterEqual. Previously disassembled as LNot(LEqual()),
8034 LNot(LGreater()), and LNot(LLess()), this makes the disassembled ASL code
8035 more readable and likely closer to the original ASL source.
8037 ----------------------------------------
8038 21 April 2006. Summary of changes for version 20060421:
8040 1) ACPI CA Core Subsystem:
8042 Removed a device initialization optimization introduced in 20051216 where
8043 the _STA method was not run unless an _INI was also present for the same
8044 device. This optimization could cause problems because it could allow
8046 methods to be run within a not-present device subtree. (If a not-present
8047 device had no _INI, _STA would not be run, the not-present status would
8049 be discovered, and the children of the device would be incorrectly
8052 Implemented a new _STA optimization where namespace subtrees that do not
8053 contain _INI are identified and ignored during device initialization.
8054 Selectively running _STA can significantly improve boot time on large
8055 machines (with assistance from Len Brown.)
8057 Implemented support for the device initialization case where the returned
8058 _STA flags indicate a device not-present but functioning. In this case,
8060 is not run, but the device children are examined for presence, as per the
8063 Implemented an additional change to the IndexField support in order to
8064 conform to MS behavior. The value written to the Index Register is not
8065 simply a byte offset, it is a byte offset in units of the access width of
8066 the parent Index Field. (Fiodor Suietov)
8068 Defined and deployed a new OSL interface, AcpiOsValidateAddress. This
8069 interface is called during the creation of all AML operation regions, and
8070 allows the host OS to exert control over what addresses it will allow the
8071 AML code to access. Operation Regions whose addresses are disallowed will
8072 cause a runtime exception when they are actually accessed (will not
8074 or abort table loading.) See oswinxf or osunixxf for an example
8077 Defined and deployed a new OSL interface, AcpiOsValidateInterface. This
8078 interface allows the host OS to match the various "optional"
8079 interface/behavior strings for the _OSI predefined control method as
8080 appropriate (with assistance from Bjorn Helgaas.) See oswinxf or osunixxf
8081 for an example implementation.
8083 Restructured and corrected various problems in the exception handling
8085 paths within DsCallControlMethod and DsTerminateControlMethod in dsmethod
8086 (with assistance from Takayoshi Kochi.)
8088 Modified the Linux source converter to ignore quoted string literals
8090 converting identifiers from mixed to lower case. This will correct
8092 with the disassembler and other areas where such strings must not be
8095 The ACPI_FUNCTION_* macros no longer require quotes around the function
8096 name. This allows the Linux source converter to convert the names, now
8098 the converter ignores quoted strings.
8100 Example Code and Data Size: These are the sizes for the OS-independent
8101 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8102 debug version of the code includes the debug output trace mechanism and
8104 a much larger code and data size.
8108 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
8109 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
8111 Non-Debug Version: 79.7K Code, 17.7K Data, 97.4K Total
8112 Debug Version: 160.1K Code, 65.2K Data, 225.3K Total
8115 2) iASL Compiler/Disassembler and Tools:
8117 Implemented 3 new warnings for iASL, and implemented multiple warning
8121 1) Ignored timeouts: If the TimeoutValue parameter to Wait or Acquire is
8123 WAIT_FOREVER (0xFFFF) and the code does not examine the return value to
8124 check for the possible timeout, a warning is issued.
8126 2) Useless operators: If an ASL operator does not specify an optional
8128 operand and it also does not use the function return value from the
8129 operator, a warning is issued since the operator effectively does
8132 3) Unreferenced objects: If a namespace object is created, but never
8133 referenced, a warning is issued. This is a warning level 2 since there
8135 cases where this is ok, such as when a secondary table is loaded that
8137 the unreferenced objects. Even so, care is taken to only flag objects
8139 don't look like they will ever be used. For example, the reserved methods
8140 (starting with an underscore) are usually not referenced because it is
8141 expected that the OS will invoke them.
8143 ----------------------------------------
8144 31 March 2006. Summary of changes for version 20060331:
8146 1) ACPI CA Core Subsystem:
8148 Implemented header file support for the following additional ACPI tables:
8149 ASF!, BOOT, CPEP, DBGP, MCFG, SPCR, SPMI, TCPA, and WDRT. With this
8151 all current and known ACPI tables are now defined in the ACPICA headers
8153 are available for use by device drivers and other software.
8155 Implemented support to allow tables that contain ACPI names with invalid
8156 characters to be loaded. Previously, this would cause the table load to
8157 fail, but since there are several known cases of such tables on existing
8158 machines, this change was made to enable ACPI support for them. Also,
8160 matches the behavior of the Microsoft ACPI implementation.
8162 Fixed a couple regressions introduced during the memory optimization in
8164 20060317 release. The namespace node definition required additional
8165 reorganization and an internal datatype that had been changed to 8-bit
8167 restored to 32-bit. (Valery Podrezov)
8169 Fixed a problem where a null pointer passed to AcpiUtDeleteGenericState
8170 could be passed through to AcpiOsReleaseObject which is unexpected. Such
8171 null pointers are now trapped and ignored, matching the behavior of the
8172 previous implementation before the deployment of AcpiOsReleaseObject.
8173 (Valery Podrezov, Fiodor Suietov)
8175 Fixed a memory mapping leak during the deletion of a SystemMemory
8177 region where a cached memory mapping was not deleted. This became a
8178 noticeable problem for operation regions that are defined within
8180 used control methods. (Dana Meyers)
8182 Reorganized the ACPI table header files into two main files: one for the
8183 ACPI tables consumed by the ACPICA core, and another for the
8185 ACPI tables that are consumed by the drivers and other software. The
8187 FADT definitions were merged into one common section and three different
8188 tables (ACPI 1.0, 1.0+, and 2.0)
8190 Example Code and Data Size: These are the sizes for the OS-independent
8191 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler. The
8192 debug version of the code includes the debug output trace mechanism and
8194 a much larger code and data size.
8197 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
8198 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
8200 Non-Debug Version: 81.1K Code, 17.7K Data, 98.8K Total
8201 Debug Version: 158.9K Code, 64.9K Data, 223.8K Total
8204 2) iASL Compiler/Disassembler and Tools:
8206 Disassembler: Implemented support to decode and format all non-AML ACPI
8207 tables (tables other than DSDTs and SSDTs.) This includes the new tables
8208 added to the ACPICA headers, therefore all current and known ACPI tables
8212 Disassembler: The change to allow ACPI names with invalid characters also
8213 enables the disassembly of such tables. Invalid characters within names
8215 changed to '*' to make the name printable; the iASL compiler will still
8216 generate an error for such names, however, since this is an invalid ACPI
8219 Implemented an option for AcpiXtract (-a) to extract all tables found in
8221 input file. The default invocation extracts only the DSDTs and SSDTs.
8223 Fixed a couple of gcc generation issues for iASL and AcpiExec and added a
8224 makefile for the AcpiXtract utility.
8226 ----------------------------------------
8227 17 March 2006. Summary of changes for version 20060317:
8229 1) ACPI CA Core Subsystem:
8231 Implemented the use of a cache object for all internal namespace nodes.
8232 Since there are about 1000 static nodes in a typical system, this will
8233 decrease memory use for cache implementations that minimize per-
8235 overhead (such as a slab allocator.)
8237 Removed the reference count mechanism for internal namespace nodes, since
8239 was deemed unnecessary. This reduces the size of each namespace node by
8240 about 5%-10% on all platforms. Nodes are now 20 bytes for the 32-bit
8242 and 32 bytes for the 64-bit case.
8244 Optimized several internal data structures to reduce object size on 64-
8246 platforms by packing data within the 64-bit alignment. This includes the
8247 frequently used ACPI_OPERAND_OBJECT, of which there can be ~1000 static
8248 instances corresponding to the namespace objects.
8250 Added two new strings for the predefined _OSI method: "Windows 2001.1
8254 Split the allocation tracking mechanism out to a separate file, from
8255 utalloc.c to uttrack.c. This mechanism appears to be only useful for
8256 application-level code. Kernels may wish to not include uttrack.c in
8259 Removed all remnants of the obsolete ACPI_REPORT_* macros and the
8261 code. (These macros have been replaced by the ACPI_ERROR and ACPI_WARNING
8264 Code and Data Size: These are the sizes for the acpica.lib produced by
8266 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
8268 driver or OSPM code. The debug version of the code includes the debug
8270 trace mechanism and has a much larger code and data size. Note that these
8271 values will vary depending on the efficiency of the compiler and the
8272 compiler options used during generation.
8275 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
8276 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
8278 Non-Debug Version: 80.9K Code, 17.7K Data, 98.6K Total
8279 Debug Version: 158.7K Code, 64.8K Data, 223.5K Total
8282 2) iASL Compiler/Disassembler and Tools:
8284 Implemented an ANSI C version of the acpixtract utility. This version
8286 automatically extract the DSDT and all SSDTs from the input acpidump text
8287 file and dump the binary output to separate files. It can also display a
8288 summary of the input file including the headers for each table found and
8289 will extract any single ACPI table, with any signature. (See
8290 source/tools/acpixtract)
8292 ----------------------------------------
8293 10 March 2006. Summary of changes for version 20060310:
8295 1) ACPI CA Core Subsystem:
8297 Tagged all external interfaces to the subsystem with the new
8298 ACPI_EXPORT_SYMBOL macro. This macro can be defined as necessary to
8300 kernel integration. For Linux, the macro resolves to the EXPORT_SYMBOL
8301 macro. The default definition is NULL.
8303 Added the ACPI_THREAD_ID type for the return value from
8305 This allows the host to define this as necessary to simplify kernel
8306 integration. The default definition is ACPI_NATIVE_UINT.
8308 Fixed two interpreter problems related to error processing, the deletion
8310 objects, and placing invalid pointers onto the internal operator result
8311 stack. BZ 6028, 6151 (Valery Podrezov)
8313 Increased the reference count threshold where a warning is emitted for
8315 reference counts in order to eliminate unnecessary warnings on systems
8317 large namespaces (especially 64-bit.) Increased the value from 0x400 to
8320 Due to universal disagreement as to the meaning of the 'c' in the
8322 function, the ACPI_MEM_CALLOCATE macro has been renamed to
8323 ACPI_ALLOCATE_ZEROED so that the purpose of the interface is 'clear'.
8324 ACPI_MEM_ALLOCATE and ACPI_MEM_FREE are renamed to ACPI_ALLOCATE and
8327 Code and Data Size: These are the sizes for the acpica.lib produced by
8329 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
8331 driver or OSPM code. The debug version of the code includes the debug
8333 trace mechanism and has a much larger code and data size. Note that these
8334 values will vary depending on the efficiency of the compiler and the
8335 compiler options used during generation.
8338 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
8339 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
8341 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
8342 Debug Version: 161.6K Code, 65.7K Data, 227.3K Total
8345 2) iASL Compiler/Disassembler:
8347 Disassembler: implemented support for symbolic resource descriptor
8348 references. If a CreateXxxxField operator references a fixed offset
8351 resource descriptor, a name is assigned to the descriptor and the offset
8353 translated to the appropriate resource tag and pathname. The addition of
8354 this support brings the disassembled code very close to the original ASL
8355 source code and helps eliminate run-time errors when the disassembled
8357 is modified (and recompiled) in such a way as to invalidate the original
8360 Implemented support for a Descriptor Name as the last parameter to the
8362 Register() macro. This parameter was inadvertently left out of the ACPI
8363 specification, and will be added for ACPI 3.0b.
8365 Fixed a problem where the use of the "_OSI" string (versus the full path
8366 "\_OSI") caused an internal compiler error. ("No back ptr to op")
8368 Fixed a problem with the error message that occurs when an invalid string
8370 used for a _HID object (such as one with an embedded asterisk:
8372 The correct message is now displayed.
8374 ----------------------------------------
8375 17 February 2006. Summary of changes for version 20060217:
8377 1) ACPI CA Core Subsystem:
8379 Implemented a change to the IndexField support to match the behavior of
8381 Microsoft AML interpreter. The value written to the Index register is now
8383 byte offset, no longer an index based upon the width of the Data
8385 This should fix IndexField problems seen on some machines where the Data
8386 register is not exactly one byte wide. The ACPI specification will be
8387 clarified on this point.
8389 Fixed a problem where several resource descriptor types could overrun the
8390 internal descriptor buffer due to size miscalculation: VendorShort,
8391 VendorLong, and Interrupt. This was noticed on IA64 machines, but could
8392 affect all platforms.
8394 Fixed a problem where individual resource descriptors were misaligned
8396 the internal buffer, causing alignment faults on IA64 platforms.
8398 Code and Data Size: These are the sizes for the acpica.lib produced by
8400 Microsoft Visual C++ 6.0 32-bit compiler. The values do not include any
8402 driver or OSPM code. The debug version of the code includes the debug
8404 trace mechanism and has a much larger code and data size. Note that these
8405 values will vary depending on the efficiency of the compiler and the
8406 compiler options used during generation.
8409 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
8410 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
8412 Non-Debug Version: 81.0K Code, 17.8K Data, 98.8K Total
8413 Debug Version: 161.4K Code, 65.7K Data, 227.1K Total
8416 2) iASL Compiler/Disassembler:
8418 Implemented support for new reserved names: _WDG and _WED are Microsoft
8419 extensions for Windows Instrumentation Management, _TDL is a new ACPI-
8420 defined method (Throttling Depth Limit.)
8422 Fixed a problem where a zero-length VendorShort or VendorLong resource
8423 descriptor was incorrectly emitted as a descriptor of length one.
8425 ----------------------------------------
8426 10 February 2006. Summary of changes for version 20060210:
8428 1) ACPI CA Core Subsystem:
8430 Removed a couple of extraneous ACPI_ERROR messages that appeared during
8431 normal execution. These became apparent after the conversion from
8434 Fixed a problem where the CreateField operator could hang if the BitIndex
8436 NumBits parameter referred to a named object. (Valery Podrezov, BZ 5359)
8438 Fixed a problem where a DeRefOf operation on a buffer object incorrectly
8439 failed with an exception. This also fixes a couple of related RefOf and
8440 DeRefOf issues. (Valery Podrezov, BZ 5360/5392/5387)
8442 Fixed a problem where the AE_BUFFER_LIMIT exception was returned instead
8444 AE_STRING_LIMIT on an out-of-bounds Index() operation. (Valery Podrezov,
8448 Implemented a memory cleanup at the end of the execution of each
8450 of an AML While() loop, preventing the accumulation of outstanding
8452 (Valery Podrezov, BZ 5427)
8454 Eliminated a chunk of duplicate code in the object resolution code.
8458 Fixed several warnings during the 64-bit code generation.
8460 The AcpiSrc source code conversion tool now inserts one line of
8462 after an if() statement that is followed immediately by a comment,
8464 readability of the Linux code.
8466 Code and Data Size: The current and previous library sizes for the core
8467 subsystem are shown below. These are the code and data sizes for the
8468 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8470 values do not include any ACPI driver or OSPM code. The debug version of
8472 code includes the debug output trace mechanism and has a much larger code
8473 and data size. Note that these values will vary depending on the
8475 of the compiler and the compiler options used during generation.
8478 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
8479 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
8481 Non-Debug Version: 81.1K Code, 17.8K Data, 98.9K Total
8482 Debug Version: 161.3K Code, 65.6K Data, 226.9K Total
8485 2) iASL Compiler/Disassembler:
8487 Fixed a problem with the disassembly of a BankField operator with a
8489 expression for the BankValue parameter.
8491 ----------------------------------------
8492 27 January 2006. Summary of changes for version 20060127:
8494 1) ACPI CA Core Subsystem:
8496 Implemented support in the Resource Manager to allow unresolved
8498 references within resource package objects for the _PRT method. This
8500 is in addition to the previously implemented unresolved reference support
8501 within the AML parser. If the interpreter slack mode is enabled, these
8502 unresolved references will be passed through to the caller as a NULL
8506 Implemented and deployed new macros and functions for error and warning
8507 messages across the subsystem. These macros are simpler and generate less
8508 code than their predecessors. The new macros ACPI_ERROR, ACPI_EXCEPTION,
8509 ACPI_WARNING, and ACPI_INFO replace the ACPI_REPORT_* macros. The older
8510 macros remain defined to allow ACPI drivers time to migrate to the new
8513 Implemented the ACPI_CPU_FLAGS type to simplify host OS integration of
8515 Acquire/Release Lock OSL interfaces.
8517 Fixed a problem where Alias ASL operators are sometimes not correctly
8518 resolved, in both the interpreter and the iASL compiler.
8520 Fixed several problems with the implementation of the
8521 ConcatenateResTemplate
8522 ASL operator. As per the ACPI specification, zero length buffers are now
8523 treated as a single EndTag. One-length buffers always cause a fatal
8524 exception. Non-zero length buffers that do not end with a full 2-byte
8526 cause a fatal exception.
8528 Fixed a possible structure overwrite in the AcpiGetObjectInfo external
8529 interface. (With assistance from Thomas Renninger)
8531 Code and Data Size: The current and previous library sizes for the core
8532 subsystem are shown below. These are the code and data sizes for the
8533 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8535 values do not include any ACPI driver or OSPM code. The debug version of
8537 code includes the debug output trace mechanism and has a much larger code
8538 and data size. Note that these values will vary depending on the
8540 of the compiler and the compiler options used during generation.
8543 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
8544 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
8546 Non-Debug Version: 81.0K Code, 17.9K Data, 98.9K Total
8547 Debug Version: 161.3K Code, 65.7K Data, 227.0K Total
8550 2) iASL Compiler/Disassembler:
8552 Fixed an internal error that was generated for any forward references to
8556 ----------------------------------------
8557 13 January 2006. Summary of changes for version 20060113:
8559 1) ACPI CA Core Subsystem:
8561 Added 2006 copyright to all module headers and signons. This affects
8562 virtually every file in the ACPICA core subsystem, iASL compiler, and the
8565 Enhanced the ACPICA error reporting in order to simplify user migration
8567 the non-debug version of ACPICA. Replaced all instances of the
8568 ACPI_DEBUG_PRINT macro invoked at the ACPI_DB_ERROR and ACPI_DB_WARN
8570 levels with the ACPI_REPORT_ERROR and ACPI_REPORT_WARNING macros,
8571 respectively. This preserves all error and warning messages in the non-
8573 version of the ACPICA code (this has been referred to as the "debug lite"
8574 option.) Over 200 cases were converted to create a total of over 380
8575 error/warning messages across the ACPICA code. This increases the code
8577 data size of the default non-debug version of the code somewhat (about
8579 but all error/warning reporting may be disabled if desired (and code
8580 eliminated) by specifying the ACPI_NO_ERROR_MESSAGES compile-time
8581 configuration option. The size of the debug version of ACPICA remains
8585 Fixed a memory leak within the AML Debugger "Set" command. One object was
8586 not properly deleted for every successful invocation of the command.
8588 Code and Data Size: The current and previous library sizes for the core
8589 subsystem are shown below. These are the code and data sizes for the
8590 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8592 values do not include any ACPI driver or OSPM code. The debug version of
8594 code includes the debug output trace mechanism and has a much larger code
8595 and data size. Note that these values will vary depending on the
8597 of the compiler and the compiler options used during generation.
8600 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
8601 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
8603 Non-Debug Version: 83.1K Code, 18.4K Data, 101.5K Total
8604 Debug Version: 163.2K Code, 66.2K Data, 229.4K Total
8607 2) iASL Compiler/Disassembler:
8609 The compiler now officially supports the ACPI 3.0a specification that was
8610 released on December 30, 2005. (Specification is available at
8613 ----------------------------------------
8614 16 December 2005. Summary of changes for version 20051216:
8616 1) ACPI CA Core Subsystem:
8618 Implemented optional support to allow unresolved names within ASL Package
8619 objects. A null object is inserted in the package when a named reference
8620 cannot be located in the current namespace. Enabled via the interpreter
8621 slack flag, this should eliminate AE_NOT_FOUND exceptions seen on
8623 that contain such code.
8625 Implemented an optimization to the initialization sequence that can
8627 boot time. During ACPI device initialization, the _STA method is now run
8629 and only if the _INI method exists. The _STA method is used to determine
8631 the device is present; An _INI can only be run if _STA returns present,
8633 it is a waste of time to run the _STA method if the _INI does not exist.
8634 (Prototype and assistance from Dong Wei)
8636 Implemented use of the C99 uintptr_t for the pointer casting macros if it
8638 available in the current compiler. Otherwise, the default (void *) cast
8642 Fixed some possible memory leaks found within the execution path of the
8643 Break, Continue, If, and CreateField operators. (Valery Podrezov)
8645 Fixed a problem introduced in the 20051202 release where an exception is
8646 generated during method execution if a control method attempts to declare
8649 Moved resource descriptor string constants that are used by both the AML
8650 disassembler and AML debugger to the common utilities directory so that
8651 these components are independent.
8653 Implemented support in the AcpiExec utility (-e switch) to globally
8655 exceptions during control method execution (method is not aborted.)
8657 Added the rsinfo.c source file to the AcpiExec makefile for Linux/Unix
8660 Code and Data Size: The current and previous library sizes for the core
8661 subsystem are shown below. These are the code and data sizes for the
8662 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8664 values do not include any ACPI driver or OSPM code. The debug version of
8666 code includes the debug output trace mechanism and has a much larger code
8667 and data size. Note that these values will vary depending on the
8669 of the compiler and the compiler options used during generation.
8672 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
8673 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
8675 Non-Debug Version: 76.6K Code, 12.3K Data, 88.9K Total
8676 Debug Version: 163.7K Code, 67.5K Data, 231.2K Total
8679 2) iASL Compiler/Disassembler:
8681 Fixed a problem where a CPU stack overflow fault could occur if a
8683 method call was made from within a Return statement.
8685 ----------------------------------------
8686 02 December 2005. Summary of changes for version 20051202:
8688 1) ACPI CA Core Subsystem:
8690 Modified the parsing of control methods to no longer create namespace
8691 objects during the first pass of the parse. Objects are now created only
8692 during the execute phase, at the moment the namespace creation operator
8694 encountered in the AML (Name, OperationRegion, CreateByteField, etc.)
8696 should eliminate ALREADY_EXISTS exceptions seen on some machines where
8697 reentrant control methods are protected by an AML mutex. The mutex will
8699 correctly block multiple threads from attempting to create the same
8703 Increased the number of available Owner Ids for namespace object tracking
8704 from 32 to 255. This should eliminate the OWNER_ID_LIMIT exceptions seen
8706 some machines with a large number of ACPI tables (either static or
8709 Fixed a problem with the AcpiExec utility where a fault could occur when
8711 -b switch (batch mode) is used.
8713 Enhanced the namespace dump routine to output the owner ID for each
8716 Code and Data Size: The current and previous library sizes for the core
8717 subsystem are shown below. These are the code and data sizes for the
8718 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8720 values do not include any ACPI driver or OSPM code. The debug version of
8722 code includes the debug output trace mechanism and has a much larger code
8723 and data size. Note that these values will vary depending on the
8725 of the compiler and the compiler options used during generation.
8728 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
8729 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
8731 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
8732 Debug Version: 163.2K Code, 67.4K Data, 230.6K Total
8735 2) iASL Compiler/Disassembler:
8737 Fixed a parse error during compilation of certain Switch/Case constructs.
8739 simplify the parse, the grammar now allows for multiple Default
8741 and this error is now detected and flagged during the analysis phase.
8743 Disassembler: The disassembly now includes the contents of the original
8744 table header within a comment at the start of the file. This includes the
8745 name and version of the original ASL compiler.
8747 ----------------------------------------
8748 17 November 2005. Summary of changes for version 20051117:
8750 1) ACPI CA Core Subsystem:
8752 Fixed a problem in the AML parser where the method thread count could be
8753 decremented below zero if any errors occurred during the method parse
8755 This should eliminate AE_AML_METHOD_LIMIT exceptions seen on some
8757 This also fixed a related regression with the mechanism that detects and
8758 corrects methods that cannot properly handle reentrancy (related to the
8759 deployment of the new OwnerId mechanism.)
8761 Eliminated the pre-parsing of control methods (to detect errors) during
8762 table load. Related to the problem above, this was causing unwind issues
8764 any errors occurred during the parse, and it seemed to be overkill. A
8766 load should not be aborted if there are problems with any single control
8767 method, thus rendering this feature rather pointless.
8769 Fixed a problem with the new table-driven resource manager where an
8771 buffer overflow could occur for small resource templates.
8773 Implemented a new external interface, AcpiGetVendorResource. This
8775 will find and return a vendor-defined resource descriptor within a _CRS
8777 _PRS method via an ACPI 3.0 UUID match. With assistance from Bjorn
8780 Removed the length limit (200) on string objects as per the upcoming ACPI
8781 3.0A specification. This affects the following areas of the interpreter:
8783 any implicit conversion of a Buffer to a String, 2) a String object
8785 of the ASL Concatentate operator, 3) the String object result of the ASL
8788 Fixed a problem in the Windows OS interface layer (OSL) where a
8790 on a semaphore object would incorrectly timeout. This allows the
8791 multithreading features of the AcpiExec utility to work properly under
8794 Updated the Linux makefiles for the iASL compiler and AcpiExec to include
8795 the recently added file named "utresrc.c".
8797 Code and Data Size: The current and previous library sizes for the core
8798 subsystem are shown below. These are the code and data sizes for the
8799 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8801 values do not include any ACPI driver or OSPM code. The debug version of
8803 code includes the debug output trace mechanism and has a much larger code
8804 and data size. Note that these values will vary depending on the
8806 of the compiler and the compiler options used during generation.
8809 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
8810 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
8812 Non-Debug Version: 76.3K Code, 12.3K Data, 88.6K Total
8813 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
8816 2) iASL Compiler/Disassembler:
8818 Removed the limit (200) on string objects as per the upcoming ACPI 3.0A
8819 specification. For the iASL compiler, this means that string literals
8821 the source ASL can be of any length.
8823 Enhanced the listing output to dump the AML code for resource descriptors
8824 immediately after the ASL code for each descriptor, instead of in a block
8826 the end of the entire resource template.
8828 Enhanced the compiler debug output to dump the entire original parse tree
8829 constructed during the parse phase, before any transforms are applied to
8831 tree. The transformed tree is dumped also.
8833 ----------------------------------------
8834 02 November 2005. Summary of changes for version 20051102:
8836 1) ACPI CA Core Subsystem:
8838 Modified the subsystem initialization sequence to improve GPE support.
8840 GPE initialization has been split into two parts in order to defer
8842 of the _PRW methods (Power Resources for Wake) until after the hardware
8844 fully initialized and the SCI handler is installed. This allows the _PRW
8845 methods to access fields protected by the Global Lock. This will fix
8847 where a NO_GLOBAL_LOCK exception has been seen during initialization.
8849 Converted the ACPI internal object disassemble and display code within
8851 AML debugger to fully table-driven operation, reducing code size and
8852 increasing maintainability.
8854 Fixed a regression with the ConcatenateResTemplate() ASL operator
8856 in the 20051021 release.
8858 Implemented support for "local" internal ACPI object types within the
8859 debugger "Object" command and the AcpiWalkNamespace external interfaces.
8860 These local types include RegionFields, BankFields, IndexFields, Alias,
8864 Moved common AML resource handling code into a new file, "utresrc.c".
8866 code is shared by both the Resource Manager and the AML Debugger.
8868 Code and Data Size: The current and previous library sizes for the core
8869 subsystem are shown below. These are the code and data sizes for the
8870 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8872 values do not include any ACPI driver or OSPM code. The debug version of
8874 code includes the debug output trace mechanism and has a much larger code
8875 and data size. Note that these values will vary depending on the
8877 of the compiler and the compiler options used during generation.
8880 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
8881 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
8883 Non-Debug Version: 76.2K Code, 12.3K Data, 88.5K Total
8884 Debug Version: 163.0K Code, 67.4K Data, 230.4K Total
8887 2) iASL Compiler/Disassembler:
8889 Fixed a problem with very large initializer lists (more than 4000
8891 for both Buffer and Package objects where the parse stack could overflow.
8893 Enhanced the pre-compile source code scan for non-ASCII characters to
8895 characters within comment fields. The scan is now always performed and is
8897 longer optional, detecting invalid characters within a source file
8898 immediately rather than during the parse phase or later.
8900 Enhanced the ASL grammar definition to force early reductions on all
8902 style grammar elements so that the overall parse stack usage is greatly
8903 reduced. This should improve performance and reduce the possibility of
8907 Eliminated all reduce/reduce conflicts in the iASL parser generation.
8909 with the addition of a %expected statement, the compiler generates from
8910 source with no warnings.
8912 Fixed a possible segment fault in the disassembler if the input filename
8913 does not contain a "dot" extension (Thomas Renninger).
8915 ----------------------------------------
8916 21 October 2005. Summary of changes for version 20051021:
8918 1) ACPI CA Core Subsystem:
8920 Implemented support for the EM64T and other x86-64 processors. This
8921 essentially entails recognizing that these processors support non-aligned
8922 memory transfers. Previously, all 64-bit processors were assumed to lack
8923 hardware support for non-aligned transfers.
8925 Completed conversion of the Resource Manager to nearly full table-driven
8926 operation. Specifically, the resource conversion code (convert AML to
8927 internal format and the reverse) and the debug code to dump internal
8928 resource descriptors are fully table-driven, reducing code and data size
8930 improving maintainability.
8932 The OSL interfaces for Acquire and Release Lock now use a 64-bit flag
8934 on 64-bit processors instead of a fixed 32-bit word. (With assistance
8936 Alexey Starikovskiy)
8938 Implemented support within the resource conversion code for the Type-
8939 Specific byte within the various ACPI 3.0 *WordSpace macros.
8941 Fixed some issues within the resource conversion code for the type-
8943 flags for both Memory and I/O address resource descriptors. For Memory,
8944 implemented support for the MTP and TTP flags. For I/O, split the TRS and
8945 TTP flags into two separate fields.
8947 Code and Data Size: The current and previous library sizes for the core
8948 subsystem are shown below. These are the code and data sizes for the
8949 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
8951 values do not include any ACPI driver or OSPM code. The debug version of
8953 code includes the debug output trace mechanism and has a much larger code
8954 and data size. Note that these values will vary depending on the
8956 of the compiler and the compiler options used during generation.
8959 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
8960 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
8962 Non-Debug Version: 76.1K Code, 12.2K Data, 88.3K Total
8963 Debug Version: 163.5K Code, 67.0K Data, 230.5K Total
8967 2) iASL Compiler/Disassembler:
8969 Relaxed a compiler restriction that disallowed a ResourceIndex byte if
8971 corresponding ResourceSource string was not also present in a resource
8972 descriptor declaration. This restriction caused problems with existing
8973 AML/ASL code that includes the Index byte without the string. When such
8975 was disassembled, it could not be compiled without modification. Further,
8976 the modified code created a resource template with a different size than
8978 original, breaking code that used fixed offsets into the resource
8982 Removed a recent feature of the disassembler to ignore a lone
8984 byte. This byte is now emitted if present so that the exact AML can be
8985 reproduced when the disassembled code is recompiled.
8987 Improved comments and text alignment for the resource descriptor code
8988 emitted by the disassembler.
8990 Implemented disassembler support for the ACPI 3.0 AccessSize field within
8992 Register() resource descriptor.
8994 ----------------------------------------
8995 30 September 2005. Summary of changes for version 20050930:
8997 1) ACPI CA Core Subsystem:
8999 Completed a major overhaul of the Resource Manager code - specifically,
9000 optimizations in the area of the AML/internal resource conversion code.
9002 code has been optimized to simplify and eliminate duplicated code, CPU
9004 use has been decreased by optimizing function parameters and local
9005 variables, and naming conventions across the manager have been
9007 for clarity and ease of maintenance (this includes function, parameter,
9008 variable, and struct/typedef names.) The update may force changes in some
9009 driver code, depending on how resources are handled by the host OS.
9011 All Resource Manager dispatch and information tables have been moved to a
9012 single location for clarity and ease of maintenance. One new file was
9013 created, named "rsinfo.c".
9015 The ACPI return macros (return_ACPI_STATUS, etc.) have been modified to
9016 guarantee that the argument is not evaluated twice, making them less
9018 to macro side-effects. However, since there exists the possibility of
9019 additional stack use if a particular compiler cannot optimize them (such
9021 in the debug generation case), the original macros are optionally
9023 Note that some invocations of the return_VALUE macro may now cause size
9024 mismatch warnings; the return_UINT8 and return_UINT32 macros are provided
9026 eliminate these. (From Randy Dunlap)
9028 Implemented a new mechanism to enable debug tracing for individual
9030 methods. A new external interface, AcpiDebugTrace, is provided to enable
9031 this mechanism. The intent is to allow the host OS to easily enable and
9032 disable tracing for problematic control methods. This interface can be
9033 easily exposed to a user or debugger interface if desired. See the file
9034 psxface.c for details.
9036 AcpiUtCallocate will now return a valid pointer if a length of zero is
9037 specified - a length of one is used and a warning is issued. This matches
9038 the behavior of AcpiUtAllocate.
9040 Code and Data Size: The current and previous library sizes for the core
9041 subsystem are shown below. These are the code and data sizes for the
9042 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9044 values do not include any ACPI driver or OSPM code. The debug version of
9046 code includes the debug output trace mechanism and has a much larger code
9047 and data size. Note that these values will vary depending on the
9049 of the compiler and the compiler options used during generation.
9052 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
9053 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
9055 Non-Debug Version: 77.1K Code, 12.1K Data, 89.2K Total
9056 Debug Version: 168.0K Code, 68.3K Data, 236.3K Total
9059 2) iASL Compiler/Disassembler:
9061 A remark is issued if the effective compile-time length of a package or
9062 buffer is zero. Previously, this was a warning.
9064 ----------------------------------------
9065 16 September 2005. Summary of changes for version 20050916:
9067 1) ACPI CA Core Subsystem:
9069 Fixed a problem within the Resource Manager where support for the Generic
9070 Register descriptor was not fully implemented. This descriptor is now
9072 recognized, parsed, disassembled, and displayed.
9074 Completely restructured the Resource Manager code to utilize table-driven
9075 dispatch and lookup, eliminating many of the large switch() statements.
9077 reduces overall subsystem code size and code complexity. Affects the
9078 resource parsing and construction, disassembly, and debug dump output.
9080 Cleaned up and restructured the debug dump output for all resource
9081 descriptors. Improved readability of the output and reduced code size.
9083 Fixed a problem where changes to internal data structures caused the
9084 optional ACPI_MUTEX_DEBUG code to fail compilation if specified.
9086 Code and Data Size: The current and previous library sizes for the core
9087 subsystem are shown below. These are the code and data sizes for the
9088 acpica.lib produced by the Microsoft Visual C++ 6.0 32-bit compiler.
9090 values do not include any ACPI driver or OSPM code. The debug version of
9092 code includes the debug output trace mechanism and has a much larger code
9093 and data size. Note that these values will vary depending on the
9095 of the compiler and the compiler options used during generation.
9098 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
9099 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
9101 Non-Debug Version: 77.5K Code, 12.0K Data, 89.5K Total
9102 Debug Version: 168.1K Code, 68.4K Data, 236.5K Total
9105 2) iASL Compiler/Disassembler:
9107 Updated the disassembler to automatically insert an EndDependentFn()
9109 into the ASL stream if this macro is missing in the original AML code,
9110 simplifying compilation of the resulting ASL module.
9112 Fixed a problem in the disassembler where a disassembled ResourceSource
9113 string (within a large resource descriptor) was not surrounded by quotes
9115 not followed by a comma, causing errors when the resulting ASL module was
9116 compiled. Also, escape sequences within a ResourceSource string are now
9117 handled correctly (especially "\\")
9119 ----------------------------------------
9120 02 September 2005. Summary of changes for version 20050902:
9122 1) ACPI CA Core Subsystem:
9124 Fixed a problem with the internal Owner ID allocation and deallocation
9125 mechanisms for control method execution and recursive method invocation.
9126 This should eliminate the OWNER_ID_LIMIT exceptions and "Invalid OwnerId"
9127 messages seen on some systems. Recursive method invocation depth is
9128 currently limited to 255. (Alexey Starikovskiy)
9130 Completely eliminated all vestiges of support for the "module-level
9131 executable code" until this support is fully implemented and debugged.
9133 should eliminate the NO_RETURN_VALUE exceptions seen during table load on
9134 some systems that invoke this support.
9136 Fixed a problem within the resource manager code where the transaction
9138 for a 64-bit address descriptor were handled incorrectly in the type-
9141 Consolidated duplicate code within the address descriptor resource
9143 code, reducing overall subsystem code size.
9145 Fixed a fault when using the AML debugger "disassemble" command to
9146 disassemble individual control methods.
9148 Removed references to the "release_current" directory within the Unix
9151 Code and Data Size: The current and previous core subsystem library sizes
9152 are shown below. These are the code and data sizes for the acpica.lib
9153 produced by the Microsoft Visual C++ 6.0 compiler. These values do not
9154 include any ACPI driver or OSPM code. The debug version of the code
9156 the debug output trace mechanism and has a much larger code and data
9158 Note that these values will vary depending on the efficiency of the
9160 and the compiler options used during generation.
9163 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
9164 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
9166 Non-Debug Version: 78.4K Code, 11.8K Data, 90.2K Total
9167 Debug Version: 169.6K Code, 69.9K Data, 239.5K Total
9170 2) iASL Compiler/Disassembler:
9172 Implemented an error check for illegal duplicate values in the interrupt
9174 dma lists for the following ASL macros: Dma(), Irq(), IrqNoFlags(), and
9177 Implemented error checking for the Irq() and IrqNoFlags() macros to
9179 too many values in the interrupt list (16 max) and invalid values in the
9182 The maximum length string literal within an ASL file is now restricted to
9183 200 characters as per the ACPI specification.
9185 Fixed a fault when using the -ln option (generate namespace listing).
9187 Implemented an error check to determine if a DescriptorName within a
9188 resource descriptor has already been used within the current scope.
9190 ----------------------------------------
9191 15 August 2005. Summary of changes for version 20050815:
9193 1) ACPI CA Core Subsystem:
9195 Implemented a full bytewise compare to determine if a table load request
9197 attempting to load a duplicate table. The compare is performed if the
9199 signatures and table lengths match. This will allow different tables with
9200 the same OEM Table ID and revision to be loaded - probably against the
9202 specification, but discovered in the field nonetheless.
9204 Added the changes.txt logfile to each of the zipped release packages.
9206 Code and Data Size: Current and previous core subsystem library sizes are
9207 shown below. These are the code and data sizes for the acpica.lib
9209 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9210 any ACPI driver or OSPM code. The debug version of the code includes the
9211 debug output trace mechanism and has a much larger code and data size.
9213 that these values will vary depending on the efficiency of the compiler
9215 the compiler options used during generation.
9218 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
9219 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
9221 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
9222 Debug Version: 170.0K Code, 69.9K Data, 239.9K Total
9225 2) iASL Compiler/Disassembler:
9227 Fixed a problem where incorrect AML code could be generated for Package
9228 objects if optimization is disabled (via the -oa switch).
9230 Fixed a problem with where incorrect AML code is generated for variable-
9231 length packages when the package length is not specified and the number
9233 initializer values is greater than 255.
9236 ----------------------------------------
9237 29 July 2005. Summary of changes for version 20050729:
9239 1) ACPI CA Core Subsystem:
9241 Implemented support to ignore an attempt to install/load a particular
9243 table more than once. Apparently there exists BIOS code that repeatedly
9244 attempts to load the same SSDT upon certain events. With assistance from
9245 Venkatesh Pallipadi.
9247 Restructured the main interface to the AML parser in order to correctly
9248 handle all exceptional conditions. This will prevent leakage of the
9250 resource and should eliminate the AE_OWNER_ID_LIMIT exceptions seen on
9252 machines. With assistance from Alexey Starikovskiy.
9254 Support for "module level code" has been disabled in this version due to
9256 number of issues that have appeared on various machines. The support can
9258 enabled by defining ACPI_ENABLE_MODULE_LEVEL_CODE during subsystem
9259 compilation. When the issues are fully resolved, the code will be enabled
9263 Modified the internal functions for debug print support to define the
9264 FunctionName parameter as a (const char *) for compatibility with
9266 built-in macros such as __FUNCTION__, etc.
9268 Linted the entire ACPICA source tree for both 32-bit and 64-bit.
9270 Implemented support to display an object count summary for the AML
9272 commands Object and Methods.
9274 Code and Data Size: Current and previous core subsystem library sizes are
9275 shown below. These are the code and data sizes for the acpica.lib
9277 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9278 any ACPI driver or OSPM code. The debug version of the code includes the
9279 debug output trace mechanism and has a much larger code and data size.
9281 that these values will vary depending on the efficiency of the compiler
9283 the compiler options used during generation.
9286 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
9287 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
9289 Non-Debug Version: 78.6K Code, 11.7K Data, 90.3K Total
9290 Debug Version: 167.0K Code, 69.9K Data, 236.9K Total
9293 2) iASL Compiler/Disassembler:
9295 Fixed a regression that appeared in the 20050708 version of the compiler
9296 where an error message was inadvertently emitted for invocations of the
9298 reserved control method.
9300 ----------------------------------------
9301 08 July 2005. Summary of changes for version 20050708:
9303 1) ACPI CA Core Subsystem:
9305 The use of the CPU stack in the debug version of the subsystem has been
9306 considerably reduced. Previously, a debug structure was declared in every
9307 function that used the debug macros. This structure has been removed in
9308 favor of declaring the individual elements as parameters to the debug
9309 functions. This reduces the cumulative stack use during nested execution
9311 ACPI function calls at the cost of a small increase in the code size of
9313 debug version of the subsystem. With assistance from Alexey Starikovskiy
9317 Added the ACPI_GET_FUNCTION_NAME macro to enable the compiler-dependent
9318 headers to define a macro that will return the current function name at
9319 runtime (such as __FUNCTION__ or _func_, etc.) The function name is used
9321 the debug trace output. If ACPI_GET_FUNCTION_NAME is not defined in the
9322 compiler-dependent header, the function name is saved on the CPU stack
9324 pointer per function.) This mechanism is used because apparently there
9325 exists no standard ANSI-C defined macro that that returns the function
9328 Redesigned and reimplemented the "Owner ID" mechanism used to track
9329 namespace objects created/deleted by ACPI tables and control method
9330 execution. A bitmap is now used to allocate and free the IDs, thus
9332 the wraparound problem present in the previous implementation. The size
9334 the namespace node descriptor was reduced by 2 bytes as a result (Alexey
9337 Removed the UINT32_BIT and UINT16_BIT types that were used for the
9339 flag definitions within the headers for the predefined ACPI tables. These
9340 have been replaced by UINT8_BIT in order to increase the code portability
9342 the subsystem. If the use of UINT8 remains a problem, we may be forced to
9343 eliminate bitfields entirely because of a lack of portability.
9345 Enhanced the performance of the AcpiUtUpdateObjectReference procedure.
9347 is a frequently used function and this improvement increases the
9349 of the entire subsystem (Alexey Starikovskiy).
9351 Fixed several possible memory leaks and the inverse - premature object
9352 deletion (Alexey Starikovskiy).
9354 Code and Data Size: Current and previous core subsystem library sizes are
9355 shown below. These are the code and data sizes for the acpica.lib
9357 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9358 any ACPI driver or OSPM code. The debug version of the code includes the
9359 debug output trace mechanism and has a much larger code and data size.
9361 that these values will vary depending on the efficiency of the compiler
9363 the compiler options used during generation.
9366 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
9367 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
9369 Non-Debug Version: 78.6K Code, 11.6K Data, 90.2K Total
9370 Debug Version: 170.0K Code, 69.7K Data, 239.7K Total
9372 ----------------------------------------
9373 24 June 2005. Summary of changes for version 20050624:
9375 1) ACPI CA Core Subsystem:
9377 Modified the new OSL cache interfaces to use ACPI_CACHE_T as the type for
9378 the host-defined cache object. This allows the OSL implementation to
9380 and type this object in any manner desired, simplifying the OSL
9381 implementation. For example, ACPI_CACHE_T is defined as kmem_cache_t for
9382 Linux, and should be defined in the OS-specific header file for other
9383 operating systems as required.
9385 Changed the interface to AcpiOsAcquireObject to directly return the
9386 requested object as the function return (instead of ACPI_STATUS.) This
9387 change was made for performance reasons, since this is the purpose of the
9388 interface in the first place. AcpiOsAcquireObject is now similar to the
9389 AcpiOsAllocate interface.
9391 Implemented a new AML debugger command named Businfo. This command
9393 information about all devices that have an associate _PRT object. The
9395 _HID, _UID, and _CID are displayed for these devices.
9397 Modified the initialization sequence in AcpiInitializeSubsystem to call
9399 OSL interface AcpiOslInitialize first, before any local initialization.
9401 change was required because the global initialization now calls OSL
9404 Enhanced the Dump command to display the entire contents of Package
9406 (including all sub-objects and their values.)
9408 Restructured the code base to split some files because of size and/or
9409 because the code logically belonged in a separate file. New files are
9411 below. All makefiles and project files included in the ACPI CA release
9414 utilities/utcache.c /* Local cache interfaces */
9415 utilities/utmutex.c /* Local mutex support */
9416 utilities/utstate.c /* State object support */
9417 interpreter/parser/psloop.c /* Main AML parse loop */
9419 Code and Data Size: Current and previous core subsystem library sizes are
9420 shown below. These are the code and data sizes for the acpica.lib
9422 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9423 any ACPI driver or OSPM code. The debug version of the code includes the
9424 debug output trace mechanism and has a much larger code and data size.
9426 that these values will vary depending on the efficiency of the compiler
9428 the compiler options used during generation.
9431 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
9432 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
9434 Non-Debug Version: 78.6K Code, 11.5K Data, 90.1K Total
9435 Debug Version: 165.2K Code, 69.6K Data, 234.8K Total
9438 2) iASL Compiler/Disassembler:
9440 Fixed a regression introduced in version 20050513 where the use of a
9442 object within a Case() statement caused a compile time exception. The
9443 original behavior has been restored (a Match() operator is emitted.)
9445 ----------------------------------------
9446 17 June 2005. Summary of changes for version 20050617:
9448 1) ACPI CA Core Subsystem:
9450 Moved the object cache operations into the OS interface layer (OSL) to
9452 the host OS to handle these operations if desired (for example, the Linux
9453 OSL will invoke the slab allocator). This support is optional; the
9455 time define ACPI_USE_LOCAL_CACHE may be used to utilize the original
9457 code in the ACPI CA core. The new OSL interfaces are shown below. See
9458 utalloc.c for an example implementation, and acpiosxf.h for the exact
9459 interface definitions. With assistance from Alexey Starikovskiy.
9466 Modified the interfaces to AcpiOsAcquireLock and AcpiOsReleaseLock to
9468 and restore a flags parameter. This fits better with many OS lock models.
9469 Note: the current execution state (interrupt handler or not) is no longer
9470 passed to these interfaces. If necessary, the OSL must determine this
9472 by itself, a simple and fast operation. With assistance from Alexey
9475 Fixed a problem in the ACPI table handling where a valid XSDT was assumed
9476 present if the revision of the RSDP was 2 or greater. According to the
9478 specification, the XSDT is optional in all cases, and the table manager
9479 therefore now checks for both an RSDP >=2 and a valid XSDT pointer.
9480 Otherwise, the RSDT pointer is used. Some ACPI 2.0 compliant BIOSs
9484 Fixed an interpreter problem with the Mid() operator in the case of an
9486 string where the resulting output string is of zero length. It now
9488 returns a valid, null terminated string object instead of a string object
9489 with a null pointer.
9491 Fixed a problem with the control method argument handling to allow a
9493 to an Arg object that already contains an object of type Device. The
9495 object is now correctly overwritten. Previously, an error was returned.
9498 Enhanced the debugger Find command to emit object values in addition to
9500 found object pathnames. The output format is the same as the dump
9504 Enhanced the debugger Set command. It now has the ability to set the
9506 of any Named integer object in the namespace (Previously, only method
9508 and args could be set.)
9510 Code and Data Size: Current and previous core subsystem library sizes are
9511 shown below. These are the code and data sizes for the acpica.lib
9513 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9514 any ACPI driver or OSPM code. The debug version of the code includes the
9515 debug output trace mechanism and has a much larger code and data size.
9517 that these values will vary depending on the efficiency of the compiler
9519 the compiler options used during generation.
9522 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
9523 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
9525 Non-Debug Version: 78.3K Code, 11.6K Data, 89.9K Total
9526 Debug Version: 164.0K Code, 69.1K Data, 233.1K Total
9529 2) iASL Compiler/Disassembler:
9531 Fixed a regression in the disassembler where if/else/while constructs
9533 output incorrectly. This problem was introduced in the previous release
9534 (20050526). This problem also affected the single-step disassembly in the
9537 Fixed a problem where compiling the reserved _OSI method would randomly
9539 rarely) produce compile errors.
9541 Enhanced the disassembler to emit compilable code in the face of
9543 AML resource descriptors. If the optional ResourceSourceIndex is present,
9544 but the ResourceSource is not, do not emit the ResourceSourceIndex in the
9545 disassembly. Otherwise, the resulting code cannot be compiled without
9548 ----------------------------------------
9549 26 May 2005. Summary of changes for version 20050526:
9551 1) ACPI CA Core Subsystem:
9553 Implemented support to execute Type 1 and Type 2 AML opcodes appearing at
9554 the module level (not within a control method.) These opcodes are
9556 exactly once at the time the table is loaded. This type of code was legal
9558 until the release of ACPI 2.0B (2002) and is now supported within ACPI CA
9560 order to provide backwards compatibility with earlier BIOS
9562 This eliminates the "Encountered executable code at module level" warning
9563 that was previously generated upon detection of such code.
9565 Fixed a problem in the interpreter where an AE_NOT_FOUND exception could
9566 inadvertently be generated during the lookup of namespace objects in the
9567 second pass parse of ACPI tables and control methods. It appears that
9569 problem could occur during the resolution of forward references to
9573 Added the ACPI_MUTEX_DEBUG #ifdef to the AcpiUtReleaseMutex function,
9574 corresponding to the same #ifdef in the AcpiUtAcquireMutex function. This
9575 allows the deadlock detection debug code to be compiled out in the normal
9576 case, improving mutex performance (and overall subsystem performance)
9579 Implemented a handful of miscellaneous fixes for possible memory leaks on
9580 error conditions and error handling control paths. These fixes were
9581 suggested by FreeBSD and the Coverity Prevent source code analysis tool.
9583 Added a check for a null RSDT pointer in AcpiGetFirmwareTable
9585 to prevent a fault in this error case.
9587 Code and Data Size: Current and previous core subsystem library sizes are
9588 shown below. These are the code and data sizes for the acpica.lib
9590 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9591 any ACPI driver or OSPM code. The debug version of the code includes the
9592 debug output trace mechanism and has a much larger code and data size.
9594 that these values will vary depending on the efficiency of the compiler
9596 the compiler options used during generation.
9599 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
9600 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
9602 Non-Debug Version: 78.1K Code, 11.6K Data, 89.7K Total
9603 Debug Version: 164.0K Code, 69.3K Data, 233.3K Total
9606 2) iASL Compiler/Disassembler:
9608 Implemented support to allow Type 1 and Type 2 ASL operators to appear at
9609 the module level (not within a control method.) These operators will be
9610 executed once at the time the table is loaded. This type of code was
9612 up until the release of ACPI 2.0B (2002) and is now supported by the iASL
9613 compiler in order to provide backwards compatibility with earlier BIOS
9617 The ACPI integer width (specified via the table revision ID or the -r
9618 override, 32 or 64 bits) is now used internally during compile-time
9620 folding to ensure that constants are truncated to 32 bits if necessary.
9621 Previously, the revision ID value was only emitted in the AML table
9624 An error message is now generated for the Mutex and Method operators if
9626 SyncLevel parameter is outside the legal range of 0 through 15.
9628 Fixed a problem with the Method operator ParameterTypes list handling
9630 3.0). Previously, more than 2 types or 2 arguments generated a syntax
9632 The actual underlying implementation of method argument typechecking is
9633 still under development, however.
9635 ----------------------------------------
9636 13 May 2005. Summary of changes for version 20050513:
9638 1) ACPI CA Core Subsystem:
9640 Implemented support for PCI Express root bridges -- added support for
9642 PNP0A08 in the root bridge search within AcpiEvPciConfigRegionSetup.
9644 The interpreter now automatically truncates incoming 64-bit constants to
9646 bits if currently executing out of a 32-bit ACPI table (Revision < 2).
9648 also affects the iASL compiler constant folding. (Note: as per below, the
9649 iASL compiler no longer allows 64-bit constants within 32-bit tables.)
9651 Fixed a problem where string and buffer objects with "static" pointers
9652 (pointers to initialization data within an ACPI table) were not handled
9653 consistently. The internal object copy operation now always copies the
9655 to a newly allocated buffer, regardless of whether the source object is
9658 Fixed a problem with the FromBCD operator where an implicit result
9659 conversion was improperly performed while storing the result to the
9661 operand. Since this is an "explicit conversion" operator, the implicit
9662 conversion should never be performed on the output.
9664 Fixed a problem with the CopyObject operator where a copy to an existing
9665 named object did not always completely overwrite the existing object
9667 at name. Specifically, a buffer-to-buffer copy did not delete the
9671 Replaced "InterruptLevel" with "InterruptNumber" in all GPE interfaces
9673 structs for consistency.
9675 Code and Data Size: Current and previous core subsystem library sizes are
9676 shown below. These are the code and data sizes for the acpica.lib
9678 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9679 any ACPI driver or OSPM code. The debug version of the code includes the
9680 debug output trace mechanism and has a much larger code and data size.
9682 that these values will vary depending on the efficiency of the compiler
9684 the compiler options used during generation.
9687 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
9688 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
9689 Current Release: (Same sizes)
9690 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
9691 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
9694 2) iASL Compiler/Disassembler:
9696 The compiler now emits a warning if an attempt is made to generate a 64-
9698 integer constant from within a 32-bit ACPI table (Revision < 2). The
9700 is truncated to 32 bits.
9702 Fixed a problem with large package objects: if the static length of the
9703 package is greater than 255, the "variable length package" opcode is
9704 emitted. Previously, this caused an error. This requires an update to the
9705 ACPI spec, since it currently (incorrectly) states that packages larger
9707 255 elements are not allowed.
9709 The disassembler now correctly handles variable length packages and
9711 larger than 255 elements.
9713 ----------------------------------------
9714 08 April 2005. Summary of changes for version 20050408:
9716 1) ACPI CA Core Subsystem:
9718 Fixed three cases in the interpreter where an "index" argument to an ASL
9719 function was still (internally) 32 bits instead of the required 64 bits.
9720 This was the Index argument to the Index, Mid, and Match operators.
9722 The "strupr" function is now permanently local (AcpiUtStrupr), since this
9724 not a POSIX-defined function and not present in most kernel-level C
9725 libraries. All references to the C library strupr function have been
9729 Completed the deployment of static functions/prototypes. All prototypes
9731 the static attribute have been moved from the headers to the owning C
9734 Implemented an extract option (-e) for the AcpiBin utility (AML binary
9735 utility). This option allows the utility to extract individual ACPI
9737 from the output of AcpiDmp. It provides the same functionality of the
9738 acpixtract.pl perl script without the worry of setting the correct perl
9739 options. AcpiBin runs on Windows and has not yet been generated/validated
9741 the Linux/Unix environment (but should be soon).
9743 Updated and fixed the table dump option for AcpiBin (-d). This option
9744 converts a single ACPI table to a hex/ascii file, similar to the output
9748 Code and Data Size: Current and previous core subsystem library sizes are
9749 shown below. These are the code and data sizes for the acpica.lib
9751 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9752 any ACPI driver or OSPM code. The debug version of the code includes the
9753 debug output trace mechanism and has a much larger code and data size.
9755 that these values will vary depending on the efficiency of the compiler
9757 the compiler options used during generation.
9760 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
9761 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
9763 Non-Debug Version: 78.2K Code, 11.6K Data, 89.8K Total
9764 Debug Version: 163.7K Code, 69.3K Data, 233.0K Total
9767 2) iASL Compiler/Disassembler:
9769 Disassembler fix: Added a check to ensure that the table length found in
9771 ACPI table header within the input file is not longer than the actual
9773 file size. This indicates some kind of file or table corruption.
9775 ----------------------------------------
9776 29 March 2005. Summary of changes for version 20050329:
9778 1) ACPI CA Core Subsystem:
9780 An error is now generated if an attempt is made to create a Buffer Field
9782 length zero (A CreateField with a length operand of zero.)
9784 The interpreter now issues a warning whenever executable code at the
9786 level is detected during ACPI table load. This will give some idea of the
9787 prevalence of this type of code.
9789 Implemented support for references to named objects (other than control
9790 methods) within package objects.
9792 Enhanced package object output for the debug object. Package objects are
9794 completely dumped, showing all elements.
9796 Enhanced miscellaneous object output for the debug object. Any object can
9797 now be written to the debug object (for example, a device object can be
9798 written, and the type of the object will be displayed.)
9800 The "static" qualifier has been added to all local functions across both
9802 core subsystem and the iASL compiler.
9804 The number of "long" lines (> 80 chars) within the source has been
9805 significantly reduced, by about 1/3.
9807 Cleaned up all header files to ensure that all CA/iASL functions are
9808 prototyped (even static functions) and the formatting is consistent.
9810 Two new header files have been added, acopcode.h and acnames.h.
9812 Removed several obsolete functions that were no longer used.
9814 Code and Data Size: Current and previous core subsystem library sizes are
9815 shown below. These are the code and data sizes for the acpica.lib
9817 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9818 any ACPI driver or OSPM code. The debug version of the code includes the
9819 debug output trace mechanism and has a much larger code and data size.
9821 that these values will vary depending on the efficiency of the compiler
9823 the compiler options used during generation.
9826 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9827 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
9829 Non-Debug Version: 78.0K Code, 11.6K Data, 89.6K Total
9830 Debug Version: 163.5K Code, 69.3K Data, 232.8K Total
9834 2) iASL Compiler/Disassembler:
9836 Fixed a problem with the resource descriptor generation/support. For the
9837 ResourceSourceIndex and the ResourceSource fields, both must be present,
9839 both must be not present - can't have one without the other.
9841 The compiler now returns non-zero from the main procedure if any errors
9843 occurred during the compilation.
9846 ----------------------------------------
9847 09 March 2005. Summary of changes for version 20050309:
9849 1) ACPI CA Core Subsystem:
9851 The string-to-buffer implicit conversion code has been modified again
9853 a change to the ACPI specification. In order to match the behavior of
9855 other major ACPI implementation, the target buffer is no longer truncated
9857 the source string is smaller than an existing target buffer. This change
9858 requires an update to the ACPI spec, and should eliminate the recent
9859 AE_AML_BUFFER_LIMIT issues.
9861 The "implicit return" support was rewritten to a new algorithm that
9863 the general case. Rather than attempt to determine when a method is about
9865 exit, the result of every ASL operator is saved momentarily until the
9867 next ASL operator is executed. Therefore, no matter how the method exits,
9868 there will always be a saved implicit return value. This feature is only
9869 enabled with the AcpiGbl_EnableInterpreterSlack flag, and should
9871 AE_AML_NO_RETURN_VALUE errors when enabled.
9873 Implemented implicit conversion support for the predicate (operand) of
9875 If, Else, and While operators. String and Buffer arguments are
9877 converted to Integers.
9879 Changed the string-to-integer conversion behavior to match the new ACPI
9880 errata: "If no integer object exists, a new integer is created. The ASCII
9881 string is interpreted as a hexadecimal constant. Each string character is
9882 interpreted as a hexadecimal value ('0'-'9', 'A'-'F', 'a', 'f'), starting
9883 with the first character as the most significant digit, and ending with
9885 first non-hexadecimal character or end-of-string." This means that the
9887 non-hex character terminates the conversion and this is the code that was
9890 Fixed a problem where the ObjectType operator would fail (fault) when
9892 on an Index of a Package which pointed to a null package element. The
9893 operator now properly returns zero (Uninitialized) in this case.
9895 Fixed a problem where the While operator used excessive memory by not
9896 properly popping the result stack during execution. There was no memory
9898 after execution, however. (Code provided by Valery Podrezov.)
9900 Fixed a problem where references to control methods within Package
9902 caused the method to be invoked, instead of producing a reference object
9903 pointing to the method.
9905 Restructured and simplified the pswalk.c module (AcpiPsDeleteParseTree)
9907 improve performance and reduce code size. (Code provided by Alexey
9910 Code and Data Size: Current and previous core subsystem library sizes are
9911 shown below. These are the code and data sizes for the acpica.lib
9913 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
9914 any ACPI driver or OSPM code. The debug version of the code includes the
9915 debug output trace mechanism and has a much larger code and data size.
9917 that these values will vary depending on the efficiency of the compiler
9919 the compiler options used during generation.
9922 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9923 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
9925 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
9926 Debug Version: 165.4K Code, 69.7K Data, 236.1K Total
9929 2) iASL Compiler/Disassembler:
9931 Fixed a problem with the Return operator with no arguments. Since the AML
9932 grammar for the byte encoding requires an operand for the Return opcode,
9934 compiler now emits a Return(Zero) for this case. An ACPI specification
9935 update has been written for this case.
9937 For tables other than the DSDT, namepath optimization is automatically
9938 disabled. This is because SSDTs can be loaded anywhere in the namespace,
9940 compiler has no knowledge of where, and thus cannot optimize namepaths.
9942 Added "ProcessorObj" to the ObjectTypeKeyword list. This object type was
9943 inadvertently omitted from the ACPI specification, and will require an
9946 The source file scan for ASCII characters is now optional (-a). This
9948 was made because some vendors place non-ascii characters within comments.
9949 However, the scan is simply a brute-force byte compare to ensure all
9950 characters in the file are in the range 0x00 to 0x7F.
9952 Fixed a problem with the CondRefOf operator where the compiler was
9953 inappropriately checking for the existence of the target. Since the point
9955 the operator is to check for the existence of the target at run-time, the
9956 compiler no longer checks for the target existence.
9958 Fixed a problem where errors generated from the internal AML interpreter
9959 during constant folding were not handled properly, causing a fault.
9961 Fixed a problem with overly aggressive range checking for the Stall
9962 operator. The valid range (max 255) is now only checked if the operand is
9964 type Integer. All other operand types cannot be statically checked.
9966 Fixed a problem where control method references within the RefOf,
9968 and ObjectType operators were not treated properly. They are now treated
9970 actual references, not method invocations.
9972 Fixed and enhanced the "list namespace" option (-ln). This option was
9974 a number of releases ago.
9976 Improved error handling for the Field, IndexField, and BankField
9978 The compiler now cleanly reports and recovers from errors in the field
9979 component (FieldUnit) list.
9981 Fixed a disassembler problem where the optional ResourceDescriptor fields
9982 TRS and TTP were not always handled correctly.
9984 Disassembler - Comments in output now use "//" instead of "/*"
9986 ----------------------------------------
9987 28 February 2005. Summary of changes for version 20050228:
9989 1) ACPI CA Core Subsystem:
9991 Fixed a problem where the result of an Index() operator (an object
9992 reference) must increment the reference count on the target object for
9994 life of the object reference.
9996 Implemented AML Interpreter and Debugger support for the new ACPI 3.0
9997 Extended Address (IO, Memory, Space), QwordSpace, DwordSpace, and
9999 resource descriptors.
10001 Implemented support in the _OSI method for the ACPI 3.0 "Extended Address
10002 Space Descriptor" string, indicating interpreter support for the
10006 Implemented header support for the new ACPI 3.0 FADT flag bits.
10008 Implemented header support for the new ACPI 3.0 PCI Express bits for the
10010 status/enable registers.
10012 Updated header support for the MADT processor local Apic struct and MADT
10013 platform interrupt source struct for new ACPI 3.0 fields.
10015 Implemented header support for the SRAT and SLIT ACPI tables.
10017 Implemented the -s switch in AcpiExec to enable the "InterpreterSlack"
10021 Code and Data Size: Current and previous core subsystem library sizes are
10022 shown below. These are the code and data sizes for the acpica.lib
10024 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10025 any ACPI driver or OSPM code. The debug version of the code includes the
10026 debug output trace mechanism and has a much larger code and data size.
10028 that these values will vary depending on the efficiency of the compiler
10030 the compiler options used during generation.
10033 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
10034 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
10036 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
10037 Debug Version: 165.4K Code, 69.6K Data, 236.0K Total
10040 2) iASL Compiler/Disassembler:
10042 Fixed a problem with the internal 64-bit String-to-integer conversion
10044 strings less than two characters long.
10046 Fixed a problem with constant folding where the result of the Index()
10047 operator can not be considered a constant. This means that Index() cannot
10049 a type3 opcode and this will require an update to the ACPI specification.
10051 Disassembler: Implemented support for the TTP, MTP, and TRS resource
10052 descriptor fields. These fields were inadvertently ignored and not output
10054 the disassembly of the resource descriptor.
10057 ----------------------------------------
10058 11 February 2005. Summary of changes for version 20050211:
10060 1) ACPI CA Core Subsystem:
10062 Implemented ACPI 3.0 support for implicit conversion within the Match()
10063 operator. MatchObjects can now be of type integer, buffer, or string
10065 of just type integer. Package elements are implicitly converted to the
10067 of the MatchObject. This change aligns the behavior of Match() with the
10068 behavior of the other logical operators (LLess(), etc.) It also requires
10070 errata change to the ACPI specification as this support was intended for
10071 ACPI 3.0, but was inadvertently omitted.
10073 Fixed a problem with the internal implicit "to buffer" conversion.
10075 that are converted to buffers will cause buffer truncation if the string
10077 smaller than the target buffer. Integers that are converted to buffers
10079 not cause buffer truncation, only zero extension (both as per the ACPI
10080 spec.) The problem was introduced when code was added to truncate the
10081 buffer, but this should not be performed in all cases, only the string
10084 Fixed a problem with the Buffer and Package operators where the
10086 would get confused if two such operators were used as operands to an ASL
10087 operator (such as LLess(Buffer(1){0},Buffer(1){1}). The internal result
10088 stack was not being popped after the execution of these operators,
10090 in an AE_NO_RETURN_VALUE exception.
10092 Fixed a problem with constructs of the form Store(Index(...),...). The
10093 reference object returned from Index was inadvertently resolved to an
10095 value. This problem was introduced in version 20050114 when the behavior
10097 Store() was modified to restrict the object types that can be used as the
10098 source operand (to match the ACPI specification.)
10100 Reduced excessive stack use within the AcpiGetObjectInfo procedure.
10102 Added a fix to aclinux.h to allow generation of AcpiExec on Linux.
10104 Updated the AcpiSrc utility to add the FADT_DESCRIPTOR_REV2_MINUS struct.
10106 Code and Data Size: Current and previous core subsystem library sizes are
10107 shown below. These are the code and data sizes for the acpica.lib
10109 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10110 any ACPI driver or OSPM code. The debug version of the code includes the
10111 debug output trace mechanism and has a much larger code and data size.
10113 that these values will vary depending on the efficiency of the compiler
10115 the compiler options used during generation.
10118 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
10119 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
10121 Non-Debug Version: 78.2K Code, 11.5K Data, 89.7K Total
10122 Debug Version: 164.9K Code, 69.2K Data, 234.1K Total
10125 2) iASL Compiler/Disassembler:
10127 Fixed a code generation problem in the constant folding optimization code
10128 where incorrect code was generated if a constant was reduced to a buffer
10129 object (i.e., a reduced type 5 opcode.)
10131 Fixed a typechecking problem for the ToBuffer operator. Caused by an
10132 incorrect return type in the internal opcode information table.
10134 ----------------------------------------
10135 25 January 2005. Summary of changes for version 20050125:
10137 1) ACPI CA Core Subsystem:
10139 Fixed a recently introduced problem with the Global Lock where the
10140 underlying semaphore was not created. This problem was introduced in
10141 version 20050114, and caused an AE_AML_NO_OPERAND exception during an
10142 Acquire() operation on _GL.
10144 The local object cache is now optional, and is disabled by default. Both
10145 AcpiExec and the iASL compiler enable the cache because they run in user
10146 mode and this enhances their performance. #define
10147 ACPI_ENABLE_OBJECT_CACHE
10148 to enable the local cache.
10150 Fixed an issue in the internal function AcpiUtEvaluateObject concerning
10152 optional "implicit return" support where an error was returned if no
10154 object was expected, but one was implicitly returned. AE_OK is now
10156 in this case and the implicitly returned object is deleted.
10157 AcpiUtEvaluateObject is only occasionally used, and only to execute
10159 methods such as _STA and _INI where the return type is known up front.
10161 Fixed a few issues with the internal convert-to-integer code. It now
10163 an error if an attempt is made to convert a null string, a string of only
10164 blanks/tabs, or a zero-length buffer. This affects both implicit
10166 and explicit conversion via the ToInteger() operator.
10168 The internal debug code in AcpiUtAcquireMutex has been commented out. It
10170 not needed for normal operation and should increase the performance of
10172 entire subsystem. The code remains in case it is needed for debug
10176 The AcpiExec source and makefile are included in the Unix/Linux package
10180 Code and Data Size: Current and previous core subsystem library sizes are
10181 shown below. These are the code and data sizes for the acpica.lib
10183 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10184 any ACPI driver or OSPM code. The debug version of the code includes the
10185 debug output trace mechanism and has a much larger code and data size.
10187 that these values will vary depending on the efficiency of the compiler
10189 the compiler options used during generation.
10192 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
10193 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
10195 Non-Debug Version: 78.1K Code, 11.5K Data, 89.6K Total
10196 Debug Version: 164.8K Code, 69.2K Data, 234.0K Total
10198 2) iASL Compiler/Disassembler:
10200 Switch/Case support: A warning is now issued if the type of the Switch
10202 cannot be determined at compile time. For example, Switch(Arg0) will
10203 generate the warning, and the type is assumed to be an integer. As per
10205 ACPI spec, use a construct such as Switch(ToInteger(Arg0)) to eliminate
10209 Switch/Case support: Implemented support for buffer and string objects as
10210 the switch value. This is an ACPI 3.0 feature, now that LEqual supports
10211 buffers and strings.
10213 Switch/Case support: The emitted code for the LEqual() comparisons now
10215 the switch value as the first operand, not the second. The case value is
10217 the second operand, and this allows the case value to be implicitly
10218 converted to the type of the switch value, not the other way around.
10220 Switch/Case support: Temporary variables are now emitted immediately
10222 the control method, not at the global level. This means that there are
10224 36 temps available per-method, not 36 temps per-module as was the case
10226 the earlier implementation (_T_0 through _T_9 and _T_A through _T_Z.)
10228 ----------------------------------------
10229 14 January 2005. Summary of changes for version 20050114:
10231 Added 2005 copyright to all module headers. This affects every module in
10232 the core subsystem, iASL compiler, and the utilities.
10234 1) ACPI CA Core Subsystem:
10236 Fixed an issue with the String-to-Buffer conversion code where the string
10237 null terminator was not included in the buffer after conversion, but
10239 is existing ASL that assumes the string null terminator is included. This
10241 the root of the ACPI_AML_BUFFER_LIMIT regression. This problem was
10242 introduced in the previous version when the code was updated to correctly
10243 set the converted buffer size as per the ACPI specification. The ACPI
10245 is ambiguous and will be updated to specify that the null terminator must
10247 included in the converted buffer. This also affects the ToBuffer() ASL
10250 Fixed a problem with the Mid() ASL/AML operator where it did not work
10251 correctly on Buffer objects. Newly created sub-buffers were not being
10256 Fixed a problem in AcpiTbFindTable where incorrect string compares were
10257 performed on the OemId and OemTableId table header fields. These fields
10259 not null terminated, so strncmp is now used instead of strcmp.
10261 Implemented a restriction on the Store() ASL/AML operator to align the
10262 behavior with the ACPI specification. Previously, any object could be
10264 as the source operand. Now, the only objects that may be used are
10266 Buffers, Strings, Packages, Object References, and DDB Handles. If
10267 necessary, the original behavior can be restored by enabling the
10268 EnableInterpreterSlack flag.
10270 Enhanced the optional "implicit return" support to allow an implicit
10272 value from methods that are invoked externally via the AcpiEvaluateObject
10273 interface. This enables implicit returns from the _STA and _INI methods,
10276 Changed the Revision() ASL/AML operator to return the current version of
10278 AML interpreter, in the YYYYMMDD format. Previously, it incorrectly
10280 the supported ACPI version (This is the function of the _REV method).
10282 Updated the _REV predefined method to return the currently supported
10286 Implemented batch mode option for the AcpiExec utility (-b).
10288 Code and Data Size: Current and previous core subsystem library sizes are
10289 shown below. These are the code and data sizes for the acpica.lib
10291 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10292 any ACPI driver or OSPM code. The debug version of the code includes the
10293 debug output trace mechanism and has a much larger code and data size.
10295 that these values will vary depending on the efficiency of the compiler
10297 the compiler options used during generation.
10300 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
10301 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
10303 Non-Debug Version: 78.4K Code, 11.5K Data, 89.9K Total
10304 Debug Version: 165.4K Code, 69.4K Data, 234.8K Total
10306 ----------------------------------------
10307 10 December 2004. Summary of changes for version 20041210:
10309 ACPI 3.0 support is nearing completion in both the iASL compiler and the
10310 ACPI CA core subsystem.
10312 1) ACPI CA Core Subsystem:
10314 Fixed a problem in the ToDecimalString operator where the resulting
10316 length was incorrectly calculated. The length is now calculated exactly,
10317 eliminating incorrect AE_STRING_LIMIT exceptions.
10319 Fixed a problem in the ToHexString operator to allow a maximum 200
10321 string to be produced.
10323 Fixed a problem in the internal string-to-buffer and buffer-to-buffer
10325 routine where the length of the resulting buffer was not truncated to the
10326 new size (if the target buffer already existed).
10328 Code and Data Size: Current and previous core subsystem library sizes are
10329 shown below. These are the code and data sizes for the acpica.lib
10331 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10332 any ACPI driver or OSPM code. The debug version of the code includes the
10333 debug output trace mechanism and has a much larger code and data size.
10335 that these values will vary depending on the efficiency of the compiler
10337 the compiler options used during generation.
10340 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
10341 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
10343 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
10344 Debug Version: 165.3K Code, 69.4K Data, 234.7K Total
10347 2) iASL Compiler/Disassembler:
10349 Implemented the new ACPI 3.0 resource template macros - DWordSpace,
10350 ExtendedIO, ExtendedMemory, ExtendedSpace, QWordSpace, and WordSpace.
10351 Includes support in the disassembler.
10353 Implemented support for the new (ACPI 3.0) parameter to the Register
10357 Fixed a problem where the _HE resource name for the Interrupt macro was
10358 referencing bit 0 instead of bit 1.
10360 Implemented check for maximum 255 interrupts in the Interrupt macro.
10362 Fixed a problem with the predefined resource descriptor names where
10363 incorrect AML code was generated if the offset within the resource buffer
10364 was 0 or 1. The optimizer shortened the AML code to a single byte opcode
10365 but did not update the surrounding package lengths.
10367 Changes to the Dma macro: All channels within the channel list must be
10369 the range 0-7. Maximum 8 channels can be specified. BusMaster operand is
10370 optional (default is BusMaster).
10372 Implemented check for maximum 7 data bytes for the VendorShort macro.
10374 The ReadWrite parameter is now optional for the Memory32 and similar
10377 ----------------------------------------
10378 03 December 2004. Summary of changes for version 20041203:
10380 1) ACPI CA Core Subsystem:
10382 The low-level field insertion/extraction code (exfldio) has been
10384 rewritten to eliminate unnecessary complexity, bugs, and boundary
10387 Fixed a problem in the ToInteger, ToBuffer, ToHexString, and
10389 operators where the input operand could be inadvertently deleted if no
10390 conversion was necessary (e.g., if the input to ToInteger was an Integer
10393 Fixed a problem with the ToDecimalString and ToHexString where an
10395 exception code was returned if the resulting string would be > 200 chars.
10396 AE_STRING_LIMIT is now returned.
10398 Fixed a problem with the Concatenate operator where AE_OK was always
10399 returned, even if the operation failed.
10401 Fixed a problem in oswinxf (used by AcpiExec and iASL) to allow > 128
10402 semaphores to be allocated.
10404 Code and Data Size: Current and previous core subsystem library sizes are
10405 shown below. These are the code and data sizes for the acpica.lib
10407 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10408 any ACPI driver or OSPM code. The debug version of the code includes the
10409 debug output trace mechanism and has a much larger code and data size.
10411 that these values will vary depending on the efficiency of the compiler
10413 the compiler options used during generation.
10416 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
10417 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
10419 Non-Debug Version: 78.3K Code, 11.5K Data, 89.8K Total
10420 Debug Version: 164.7K Code, 68.5K Data, 233.2K Total
10423 2) iASL Compiler/Disassembler:
10425 Fixed typechecking for the ObjectType and SizeOf operators. Problem was
10426 recently introduced in 20041119.
10428 Fixed a problem with the ToUUID macro where the upper nybble of each
10430 byte was inadvertently set to zero.
10432 ----------------------------------------
10433 19 November 2004. Summary of changes for version 20041119:
10435 1) ACPI CA Core Subsystem:
10437 Fixed a problem in the internal ConvertToInteger routine where new
10439 were not truncated to 32 bits for 32-bit ACPI tables. This routine
10441 buffers and strings to integers.
10443 Implemented support to store a value to an Index() on a String object.
10445 is an ACPI 2.0 feature that had not yet been implemented.
10447 Implemented new behavior for storing objects to individual package
10449 (via the Index() operator). The previous behavior was to invoke the
10451 conversion rules if an object was already present at the index. The new
10452 behavior is to simply delete any existing object and directly store the
10454 object. Although the ACPI specification seems unclear on this subject,
10456 ACPI implementations behave in this manner. (This is the root of the
10457 AE_BAD_HEX_CONSTANT issue.)
10459 Modified the RSDP memory scan mechanism to support the extended checksum
10461 ACPI 2.0 (and above) RSDPs. Note that the search continues until a valid
10462 RSDP signature is found with a valid checksum.
10464 Code and Data Size: Current and previous core subsystem library sizes are
10465 shown below. These are the code and data sizes for the acpica.lib
10467 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10468 any ACPI driver or OSPM code. The debug version of the code includes the
10469 debug output trace mechanism and has a much larger code and data size.
10471 that these values will vary depending on the efficiency of the compiler
10473 the compiler options used during generation.
10476 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
10477 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
10479 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
10480 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
10483 2) iASL Compiler/Disassembler:
10485 Fixed a missing semicolon in the aslcompiler.y file.
10487 ----------------------------------------
10488 05 November 2004. Summary of changes for version 20041105:
10490 1) ACPI CA Core Subsystem:
10492 Implemented support for FADT revision 2. This was an interim table
10494 ACPI 1.0 and ACPI 2.0) that adds support for the FADT reset register.
10496 Implemented optional support to allow uninitialized LocalX and ArgX
10497 variables in a control method. The variables are initialized to an
10499 object with a value of zero. This support is enabled by setting the
10500 AcpiGbl_EnableInterpreterSlack flag to TRUE.
10502 Implemented support for Integer objects for the SizeOf operator. Either
10504 or 8 is returned, depending on the current integer size (32-bit or 64-
10506 depending on the parent table revision).
10508 Fixed a problem in the implementation of the SizeOf and ObjectType
10510 where the operand was resolved to a value too early, causing incorrect
10511 return values for some objects.
10513 Fixed some possible memory leaks during exceptional conditions.
10515 Code and Data Size: Current and previous core subsystem library sizes are
10516 shown below. These are the code and data sizes for the acpica.lib
10518 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10519 any ACPI driver or OSPM code. The debug version of the code includes the
10520 debug output trace mechanism and has a much larger code and data size.
10522 that these values will vary depending on the efficiency of the compiler
10524 the compiler options used during generation.
10527 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
10528 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
10530 Non-Debug Version: 78.5K Code, 11.5K Data, 90.0K Total
10531 Debug Version: 165.2K Code, 68.6K Data, 233.8K Total
10534 2) iASL Compiler/Disassembler:
10536 Implemented support for all ACPI 3.0 reserved names and methods.
10538 Implemented all ACPI 3.0 grammar elements in the front-end, including
10539 support for semicolons.
10541 Implemented the ACPI 3.0 Function() and ToUUID() macros
10543 Fixed a problem in the disassembler where a Scope() operator would not be
10544 emitted properly if the target of the scope was in another table.
10546 ----------------------------------------
10547 15 October 2004. Summary of changes for version 20041015:
10549 Note: ACPI CA is currently undergoing an in-depth and complete formal
10550 evaluation to test/verify the following areas. Other suggestions are
10551 welcome. This will result in an increase in the frequency of releases and
10552 the number of bug fixes in the next few months.
10553 - Functional tests for all ASL/AML operators
10554 - All implicit/explicit type conversions
10555 - Bit fields and operation regions
10556 - 64-bit math support and 32-bit-only "truncated" math support
10557 - Exceptional conditions, both compiler and interpreter
10558 - Dynamic object deletion and memory leaks
10559 - ACPI 3.0 support when implemented
10560 - External interfaces to the ACPI subsystem
10563 1) ACPI CA Core Subsystem:
10565 Fixed two alignment issues on 64-bit platforms - within debug statements
10567 AcpiEvGpeDetect and AcpiEvCreateGpeBlock. Removed references to the
10569 field within the non-aligned ACPI generic address structure.
10571 Fixed a problem in the Increment and Decrement operators where incorrect
10572 operand resolution could result in the inadvertent modification of the
10573 original integer when the integer is passed into another method as an
10574 argument and the arg is then incremented/decremented.
10576 Fixed a problem in the FromBCD operator where the upper 32-bits of a 64-
10578 BCD number were truncated during conversion.
10580 Fixed a problem in the ToDecimal operator where the length of the
10582 string could be set incorrectly too long if the input operand was a
10586 Fixed a problem in the Logical operators (LLess, etc.) where a NULL byte
10588 within a buffer would prematurely terminate a compare between buffer
10591 Added a check for string overflow (>200 characters as per the ACPI
10592 specification) during the Concatenate operator with two string operands.
10594 Code and Data Size: Current and previous core subsystem library sizes are
10595 shown below. These are the code and data sizes for the acpica.lib
10597 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10598 any ACPI driver or OSPM code. The debug version of the code includes the
10599 debug output trace mechanism and has a much larger code and data size.
10601 that these values will vary depending on the efficiency of the compiler
10603 the compiler options used during generation.
10606 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
10607 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
10609 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
10610 Debug Version: 164.8K Code, 68.6K Data, 233.4K Total
10614 2) iASL Compiler/Disassembler:
10616 Allow the use of the ObjectType operator on uninitialized Locals and Args
10617 (returns 0 as per the ACPI specification).
10619 Fixed a problem where the compiler would fault if there was a syntax
10621 in the FieldName of all of the various CreateXXXField operators.
10623 Disallow the use of lower case letters within the EISAID macro, as per
10625 ACPI specification. All EISAID strings must be of the form "UUUNNNN"
10627 U is an uppercase letter and N is a hex digit.
10630 ----------------------------------------
10631 06 October 2004. Summary of changes for version 20041006:
10633 1) ACPI CA Core Subsystem:
10635 Implemented support for the ACPI 3.0 Timer operator. This ASL function
10636 implements a 64-bit timer with 100 nanosecond granularity.
10638 Defined a new OSL interface, AcpiOsGetTimer. This interface is used to
10639 implement the ACPI 3.0 Timer operator. This allows the host OS to
10641 the timer with the best clock available. Also, it keeps the core
10643 out of the clock handling business, since the host OS (usually) performs
10646 Fixed an alignment issue on 64-bit platforms. The HwLowLevelRead(Write)
10647 functions use a 64-bit address which is part of the packed ACPI Generic
10648 Address Structure. Since the structure is non-aligned, the alignment
10650 are now used to extract the address to a local variable before use.
10652 Fixed a problem where the ToInteger operator assumed all input strings
10654 hexadecimal. The operator now handles both decimal strings and hex
10656 (prefixed with "0x").
10658 Fixed a problem where the string length in the string object created as a
10659 result of the internal ConvertToString procedure could be incorrect. This
10660 potentially affected all implicit conversions and also the
10662 and ToHexString operators.
10664 Fixed two problems in the ToString operator. If the length parameter was
10665 zero, an incorrect string object was created and the value of the input
10666 length parameter was inadvertently changed from zero to Ones.
10668 Fixed a problem where the optional ResourceSource string in the
10670 resource macro was ignored.
10672 Simplified the interfaces to the internal division functions, reducing
10674 size and complexity.
10676 Code and Data Size: Current and previous core subsystem library sizes are
10677 shown below. These are the code and data sizes for the acpica.lib
10679 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10680 any ACPI driver or OSPM code. The debug version of the code includes the
10681 debug output trace mechanism and has a much larger code and data size.
10683 that these values will vary depending on the efficiency of the compiler
10685 the compiler options used during generation.
10688 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
10689 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
10691 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
10692 Debug Version: 164.6K Code, 68.5K Data, 233.1K Total
10695 2) iASL Compiler/Disassembler:
10697 Implemented support for the ACPI 3.0 Timer operator.
10699 Fixed a problem where the Default() operator was inadvertently ignored in
10701 Switch/Case block. This was a problem in the translation of the Switch
10702 statement to If...Else pairs.
10704 Added support to allow a standalone Return operator, with no parentheses
10708 Fixed a problem with code generation for the ElseIf operator where the
10709 translated Else...If parse tree was improperly constructed leading to the
10712 ----------------------------------------
10713 22 September 2004. Summary of changes for version 20040922:
10715 1) ACPI CA Core Subsystem:
10717 Fixed a problem with the implementation of the LNot() operator where
10719 was not returned for the TRUE case. Changed the code to return Ones
10721 of (!Arg) which was usually 1. This change affects iASL constant folding
10723 this operator also.
10725 Fixed a problem in AcpiUtInitializeBuffer where an existing buffer was
10727 initialized properly -- Now zero the entire buffer in this case where the
10728 buffer already exists.
10730 Changed the interface to AcpiOsSleep from (UINT32 Seconds, UINT32
10731 Milliseconds) to simply (ACPI_INTEGER Milliseconds). This simplifies all
10732 related code considerably. This will require changes/updates to all OS
10733 interface layers (OSLs.)
10735 Implemented a new external interface, AcpiInstallExceptionHandler, to
10737 a system exception handler to be installed. This handler is invoked upon
10739 run-time exception that occurs during control method execution.
10741 Added support for the DSDT in AcpiTbFindTable. This allows the
10742 DataTableRegion() operator to access the local copy of the DSDT.
10744 Code and Data Size: Current and previous core subsystem library sizes are
10745 shown below. These are the code and data sizes for the acpica.lib
10747 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10748 any ACPI driver or OSPM code. The debug version of the code includes the
10749 debug output trace mechanism and has a much larger code and data size.
10751 that these values will vary depending on the efficiency of the compiler
10753 the compiler options used during generation.
10756 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
10757 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
10759 Non-Debug Version: 77.9K Code, 11.4K Data, 89.3K Total
10760 Debug Version: 164.5K Code, 68.3K Data, 232.8K Total
10763 2) iASL Compiler/Disassembler:
10765 Fixed a problem with constant folding and the LNot operator. LNot was
10766 returning 1 in the TRUE case, not Ones as per the ACPI specification.
10768 could result in the generation of an incorrect folded/reduced constant.
10770 End-Of-File is now allowed within a "//"-style comment. A parse error no
10771 longer occurs if such a comment is at the very end of the input ASL
10775 Implemented the "-r" option to override the Revision in the table header.
10776 The initial use of this option will be to simplify the evaluation of the
10778 interpreter by allowing a single ASL source module to be compiled for
10780 32-bit or 64-bit integers.
10783 ----------------------------------------
10784 27 August 2004. Summary of changes for version 20040827:
10786 1) ACPI CA Core Subsystem:
10788 - Implemented support for implicit object conversion in the non-numeric
10789 logical operators (LEqual, LGreater, LGreaterEqual, LLess, LLessEqual,
10791 LNotEqual.) Any combination of Integers/Strings/Buffers may now be used;
10792 the second operand is implicitly converted on the fly to match the type
10794 the first operand. For example:
10796 LEqual (Source1, Source2)
10798 Source1 and Source2 must each evaluate to an integer, a string, or a
10800 The data type of Source1 dictates the required type of Source2. Source2
10802 implicitly converted if necessary to match the type of Source1.
10804 - Updated and corrected the behavior of the string conversion support.
10806 rules concerning conversion of buffers to strings (according to the ACPI
10807 specification) are as follows:
10809 ToDecimalString - explicit byte-wise conversion of buffer to string of
10810 decimal values (0-255) separated by commas. ToHexString - explicit byte-
10812 conversion of buffer to string of hex values (0-FF) separated by commas.
10813 ToString - explicit byte-wise conversion of buffer to string. Byte-by-
10815 copy with no transform except NULL terminated. Any other implicit buffer-
10817 string conversion - byte-wise conversion of buffer to string of hex
10819 (0-FF) separated by spaces.
10821 - Fixed typo in definition of AcpiGbl_EnableInterpreterSlack.
10823 - Fixed a problem in AcpiNsGetPathnameLength where the returned length
10825 one byte too short in the case of a node in the root scope. This could
10826 cause a fault during debug output.
10828 - Code and Data Size: Current and previous core subsystem library sizes
10830 shown below. These are the code and data sizes for the acpica.lib
10832 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10833 any ACPI driver or OSPM code. The debug version of the code includes the
10834 debug output trace mechanism and has a much larger code and data size.
10836 that these values will vary depending on the efficiency of the compiler
10838 the compiler options used during generation.
10841 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
10842 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
10844 Non-Debug Version: 77.8K Code, 11.4K Data, 89.2K Total
10845 Debug Version: 164.2K Code, 68.2K Data, 232.4K Total
10848 2) iASL Compiler/Disassembler:
10850 - Fixed a Linux generation error.
10853 ----------------------------------------
10854 16 August 2004. Summary of changes for version 20040816:
10856 1) ACPI CA Core Subsystem:
10858 Designed and implemented support within the AML interpreter for the so-
10859 called "implicit return". This support returns the result of the last
10861 operation within a control method, in the absence of an explicit Return()
10862 operator. A few machines depend on this behavior, even though it is not
10863 explicitly supported by the ASL language. It is optional support that
10865 be enabled at runtime via the AcpiGbl_EnableInterpreterSlack flag.
10867 Removed support for the PCI_Config address space from the internal low
10869 hardware interfaces (AcpiHwLowLevelRead and AcpiHwLowLevelWrite). This
10870 support was not used internally, and would not work correctly anyway
10872 the PCI bus number and segment number were not supported. There are
10873 separate interfaces for PCI configuration space access because of the
10877 Code and Data Size: Current and previous core subsystem library sizes are
10878 shown below. These are the code and data sizes for the acpica.lib
10880 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10881 any ACPI driver or OSPM code. The debug version of the code includes the
10882 debug output trace mechanism and has a much larger code and data size.
10884 that these values will vary depending on the efficiency of the compiler
10886 the compiler options used during generation.
10889 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
10890 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
10892 Non-Debug Version: 77.9K Code, 11.5K Data, 89.4K Total
10893 Debug Version: 164.1K Code, 68.3K Data, 232.4K Total
10896 2) iASL Compiler/Disassembler:
10898 Fixed a problem where constants in ASL expressions at the root level (not
10899 within a control method) could be inadvertently truncated during code
10900 generation. This problem was introduced in the 20040715 release.
10903 ----------------------------------------
10904 15 July 2004. Summary of changes for version 20040715:
10906 1) ACPI CA Core Subsystem:
10908 Restructured the internal HW GPE interfaces to pass/track the current
10910 of interrupts (enabled/disabled) in order to avoid possible deadlock and
10911 increase flexibility of the interfaces.
10913 Implemented a "lexicographical compare" for String and Buffer objects
10915 the logical operators -- LGreater, LLess, LGreaterEqual, and LLessEqual -
10917 as per further clarification to the ACPI specification. Behavior is
10919 to C library "strcmp".
10921 Completed a major reduction in CPU stack use for the AcpiGetFirmwareTable
10922 external function. In the 32-bit non-debug case, the stack use has been
10923 reduced from 168 bytes to 32 bytes.
10925 Deployed a new run-time configuration flag,
10926 AcpiGbl_EnableInterpreterSlack,
10927 whose purpose is to allow the AML interpreter to forgive certain bad AML
10928 constructs. Default setting is FALSE.
10930 Implemented the first use of AcpiGbl_EnableInterpreterSlack in the Field
10932 support code. If enabled, it allows field access to go beyond the end of
10934 region definition if the field is within the region length rounded up to
10936 next access width boundary (a common coding error.)
10938 Renamed OSD_HANDLER to ACPI_OSD_HANDLER, and OSD_EXECUTION_CALLBACK to
10939 ACPI_OSD_EXEC_CALLBACK for consistency with other ACPI symbols. Also,
10941 symbols are lowercased by the latest version of the AcpiSrc tool.
10943 The prototypes for the PCI interfaces in acpiosxf.h have been updated to
10944 rename "Register" to simply "Reg" to prevent certain compilers from
10947 Code and Data Size: Current and previous core subsystem library sizes are
10948 shown below. These are the code and data sizes for the acpica.lib
10950 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
10951 any ACPI driver or OSPM code. The debug version of the code includes the
10952 debug output trace mechanism and has a much larger code and data size.
10954 that these values will vary depending on the efficiency of the compiler
10956 the compiler options used during generation.
10959 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
10960 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
10962 Non-Debug Version: 78.0K Code, 11.5K Data, 89.5K Total
10963 Debug Version: 164.1K Code, 68.2K Data, 232.3K Total
10966 2) iASL Compiler/Disassembler:
10968 Implemented full support for Package objects within the Case() operator.
10969 Note: The Break() operator is currently not supported within Case blocks
10970 (TermLists) as there is some question about backward compatibility with
10975 Fixed a problem where complex terms were not supported properly within
10979 Eliminated extraneous warning for compiler-emitted reserved names of the
10980 form "_T_x". (Used in Switch/Case operators.)
10982 Eliminated optimization messages for "_T_x" objects and small constants
10983 within the DefinitionBlock operator.
10986 ----------------------------------------
10987 15 June 2004. Summary of changes for version 20040615:
10989 1) ACPI CA Core Subsystem:
10991 Implemented support for Buffer and String objects (as per ACPI 2.0) for
10993 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
10996 All directory names in the entire source package are lower case, as they
10997 were in earlier releases.
10999 Implemented "Disassemble" command in the AML debugger that will
11001 a single control method.
11003 Code and Data Size: Current and previous core subsystem library sizes are
11004 shown below. These are the code and data sizes for the acpica.lib
11006 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11007 any ACPI driver or OSPM code. The debug version of the code includes the
11008 debug output trace mechanism and has a much larger code and data size.
11010 that these values will vary depending on the efficiency of the compiler
11012 the compiler options used during generation.
11015 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
11016 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
11019 Non-Debug Version: 77.8K Code, 11.5K Data, 89.3K Total
11020 Debug Version: 163.8K Code, 68.2K Data, 232.0K Total
11023 2) iASL Compiler/Disassembler:
11025 Implemented support for Buffer and String objects (as per ACPI 2.0) for
11027 following ASL operators: LEqual, LGreater, LLess, LGreaterEqual, and
11030 All directory names in the entire source package are lower case, as they
11031 were in earlier releases.
11033 Fixed a fault when using the -g or -d<nofilename> options if the FADT was
11036 Fixed an issue with the Windows version of the compiler where later
11038 of Windows place the FADT in the registry under the name "FADT" and not
11039 "FACP" as earlier versions did. This applies when using the -g or -
11040 d<nofilename> options. The compiler now looks for both strings as
11043 Fixed a problem with compiler namepath optimization where a namepath
11045 the Scope() operator could not be optimized if the namepath was a subpath
11047 the current scope path.
11049 ----------------------------------------
11050 27 May 2004. Summary of changes for version 20040527:
11052 1) ACPI CA Core Subsystem:
11054 Completed a new design and implementation for EBDA (Extended BIOS Data
11056 support in the RSDP scan code. The original code improperly scanned for
11058 EBDA by simply scanning from memory location 0 to 0x400. The correct
11060 is to first obtain the EBDA pointer from within the BIOS data area, then
11061 scan 1K of memory starting at the EBDA pointer. There appear to be few
11063 any machines that place the RSDP in the EBDA, however.
11065 Integrated a fix for a possible fault during evaluation of BufferField
11066 arguments. Obsolete code that was causing the problem was removed.
11068 Found and fixed a problem in the Field Support Code where data could be
11069 corrupted on a bit field read that starts on an aligned boundary but does
11070 not end on an aligned boundary. Merged the read/write "datum length"
11071 calculation code into a common procedure.
11073 Rolled in a couple of changes to the FreeBSD-specific header.
11076 Code and Data Size: Current and previous core subsystem library sizes are
11077 shown below. These are the code and data sizes for the acpica.lib
11079 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11080 any ACPI driver or OSPM code. The debug version of the code includes the
11081 debug output trace mechanism and has a much larger code and data size.
11083 that these values will vary depending on the efficiency of the compiler
11085 the compiler options used during generation.
11088 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
11089 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
11091 Non-Debug Version: 77.7K Code, 11.5K Data, 89.2K Total
11092 Debug Version: 163.3K Code, 67.2K Data, 230.5K Total
11095 2) iASL Compiler/Disassembler:
11097 Fixed a generation warning produced by some overly-verbose compilers for
11101 ----------------------------------------
11102 14 May 2004. Summary of changes for version 20040514:
11104 1) ACPI CA Core Subsystem:
11106 Fixed a problem where hardware GPE enable bits sometimes not set properly
11107 during and after GPE method execution. Result of 04/27 changes.
11109 Removed extra "clear all GPEs" when sleeping/waking.
11111 Removed AcpiHwEnableGpe and AcpiHwDisableGpe, replaced by the single
11112 AcpiHwWriteGpeEnableReg. Changed a couple of calls to the functions above
11114 the new AcpiEv* calls as appropriate.
11116 ACPI_OS_NAME was removed from the OS-specific headers. The default name
11118 now "Microsoft Windows NT" for maximum compatibility. However this can
11120 changed by modifying the acconfig.h file.
11122 Allow a single invocation of AcpiInstallNotifyHandler for a handler that
11123 traps both types of notifies (System, Device). Use ACPI_ALL_NOTIFY flag.
11125 Run _INI methods on ThermalZone objects. This is against the ACPI
11126 specification, but there is apparently ASL code in the field that has
11128 _INI methods, and apparently "other" AML interpreters execute them.
11130 Performed a full 16/32/64 bit lint that resulted in some small changes.
11132 Added a sleep simulation command to the AML debugger to test sleep code.
11134 Code and Data Size: Current and previous core subsystem library sizes are
11135 shown below. These are the code and data sizes for the acpica.lib
11137 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11138 any ACPI driver or OSPM code. The debug version of the code includes the
11139 debug output trace mechanism and has a much larger code and data size.
11141 that these values will vary depending on the efficiency of the compiler
11143 the compiler options used during generation.
11146 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
11147 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
11149 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
11150 Debug Version: 163.2K Code, 67.2K Data, 230.4K Total
11152 ----------------------------------------
11153 27 April 2004. Summary of changes for version 20040427:
11155 1) ACPI CA Core Subsystem:
11157 Completed a major overhaul of the GPE handling within ACPI CA. There are
11158 now three types of GPEs: wake-only, runtime-only, and combination
11160 The only GPEs allowed to be combination wake/run are for button-style
11161 devices such as a control-method power button, control-method sleep
11163 or a notebook lid switch. GPEs that have an _Lxx or _Exx method and are
11165 referenced by any _PRW methods are marked for "runtime" and hardware
11166 enabled. Any GPE that is referenced by a _PRW method is marked for
11168 (and disabled at runtime). However, at sleep time, only those GPEs that
11169 have been specifically enabled for wake via the AcpiEnableGpe interface
11171 actually be hardware enabled.
11173 A new external interface has been added, AcpiSetGpeType(), that is meant
11175 be used by device drivers to force a GPE to a particular type. It will
11177 especially useful for the drivers for the button devices mentioned above.
11179 Completed restructuring of the ACPI CA initialization sequence so that
11180 default operation region handlers are installed before GPEs are
11182 and the _PRW methods are executed. This will prevent errors when the
11184 methods attempt to access system memory or I/O space.
11186 GPE enable/disable no longer reads the GPE enable register. We now keep
11188 enable info for runtime and wake separate and in the GPE_EVENT_INFO. We
11189 thus no longer depend on the hardware to maintain these bits.
11191 Always clear the wake status and fixed/GPE status bits before sleep, even
11194 Improved the AML debugger output for displaying the GPE blocks and their
11197 Added new strings for the _OSI method, of the form "Windows 2001 SPx"
11201 Fixed a problem where the physical address was incorrectly calculated
11203 the Load() operator was used to directly load from an Operation Region
11205 loading from a Field object.) Also added check for minimum table length
11209 Fix for multiple mutex acquisition. Restore original thread SyncLevel on
11212 Added ACPI_VALID_SXDS flag to the AcpiGetObjectInfo interface for
11213 consistency with the other fields returned.
11215 Shrunk the ACPI_GPE_EVENT_INFO structure by 40%. There is one such
11216 structure for each GPE in the system, so the size of this structure is
11219 CPU stack requirement reduction: Cleaned up the method execution and
11221 evaluation paths so that now a parameter structure is passed, instead of
11222 copying the various method parameters over and over again.
11224 In evregion.c: Correctly exit and reenter the interpreter region if and
11225 only if dispatching an operation region request to a user-installed
11227 Do not exit/reenter when dispatching to a default handler (e.g., default
11228 system memory or I/O handlers)
11231 Notes for updating drivers for the new GPE support. The following
11233 must be made to ACPI-related device drivers that are attached to one or
11235 GPEs: (This information will be added to the ACPI CA Programmer
11238 1) AcpiInstallGpeHandler no longer automatically enables the GPE, you
11240 explicitly call AcpiEnableGpe.
11241 2) There is a new interface called AcpiSetGpeType. This should be called
11242 before enabling the GPE. Also, this interface will automatically disable
11243 the GPE if it is currently enabled.
11244 3) AcpiEnableGpe no longer supports a GPE type flag.
11246 Specific drivers that must be changed:
11248 AcpiInstallGpeHandler (NULL, GpeNum, ACPI_GPE_EDGE_TRIGGERED,
11249 AeGpeHandler, NULL);
11250 AcpiSetGpeType (NULL, GpeNum, ACPI_GPE_TYPE_RUNTIME);
11251 AcpiEnableGpe (NULL, GpeNum, ACPI_NOT_ISR);
11253 2) Button Drivers (Power, Lid, Sleep):
11254 Run _PRW method under parent device
11255 If _PRW exists: /* This is a control-method button */
11256 Extract GPE number and possibly GpeDevice
11257 AcpiSetGpeType (GpeDevice, GpeNum, ACPI_GPE_TYPE_WAKE_RUN);
11258 AcpiEnableGpe (GpeDevice, GpeNum, ACPI_NOT_ISR);
11260 For all other devices that have _PRWs, we automatically set the GPE type
11262 ACPI_GPE_TYPE_WAKE, but the GPE is NOT automatically (wake) enabled.
11264 must be done on a selective basis, usually requiring some kind of user
11266 to allow the user to pick the wake devices.
11269 Code and Data Size: Current and previous core subsystem library sizes are
11270 shown below. These are the code and data sizes for the acpica.lib
11272 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11273 any ACPI driver or OSPM code. The debug version of the code includes the
11274 debug output trace mechanism and has a much larger code and data size.
11276 that these values will vary depending on the efficiency of the compiler
11278 the compiler options used during generation.
11281 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
11282 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
11285 Non-Debug Version: 77.6K Code, 11.5K Data, 89.1K Total
11286 Debug Version: 162.9K Code, 67.0K Data, 229.9K Total
11290 ----------------------------------------
11291 02 April 2004. Summary of changes for version 20040402:
11293 1) ACPI CA Core Subsystem:
11295 Fixed an interpreter problem where an indirect store through an ArgX
11296 parameter was incorrectly applying the "implicit conversion rules" during
11297 the store. From the ACPI specification: "If the target is a method local
11299 argument (LocalX or ArgX), no conversion is performed and the result is
11300 stored directly to the target". The new behavior is to disable implicit
11301 conversion during ALL stores to an ArgX.
11303 Changed the behavior of the _PRW method scan to ignore any and all errors
11304 returned by a given _PRW. This prevents the scan from aborting from the
11305 failure of any single _PRW.
11307 Moved the runtime configuration parameters from the global init procedure
11309 static variables in acglobal.h. This will allow the host to override the
11310 default values easily.
11312 Code and Data Size: Current and previous core subsystem library sizes are
11313 shown below. These are the code and data sizes for the acpica.lib
11315 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11316 any ACPI driver or OSPM code. The debug version of the code includes the
11317 debug output trace mechanism and has a much larger code and data size.
11319 that these values will vary depending on the efficiency of the compiler
11321 the compiler options used during generation.
11324 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
11325 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
11327 Non-Debug Version: 77.0K Code, 11.4K Data, 88.4K Total
11328 Debug Version: 161.0K Code, 66.3K Data, 227.3K Total
11331 2) iASL Compiler/Disassembler:
11333 iASL now fully disassembles SSDTs. However, External() statements are
11335 generated automatically for unresolved symbols at this time. This is a
11336 planned feature for future implementation.
11338 Fixed a scoping problem in the disassembler that occurs when the type of
11340 target of a Scope() operator is overridden. This problem caused an
11341 incorrectly nested internal namespace to be constructed.
11343 Any warnings or errors that are emitted during disassembly are now
11345 out automatically so that the resulting file can be recompiled without
11349 ----------------------------------------
11350 26 March 2004. Summary of changes for version 20040326:
11352 1) ACPI CA Core Subsystem:
11354 Implemented support for "wake" GPEs via interaction between GPEs and the
11355 _PRW methods. Every GPE that is pointed to by one or more _PRWs is
11356 identified as a WAKE GPE and by default will no longer be enabled at
11357 runtime. Previously, we were blindly enabling all GPEs with a
11359 _Lxx or _Exx method - but most of these turn out to be WAKE GPEs anyway.
11361 believe this has been the cause of thousands of "spurious" GPEs on some
11364 This new GPE behavior is can be reverted to the original behavior (enable
11365 ALL GPEs at runtime) via a runtime flag.
11367 Fixed a problem where aliased control methods could not access objects
11368 properly. The proper scope within the namespace was not initialized
11369 (transferred to the target of the aliased method) before executing the
11372 Fixed a potential race condition on internal object deletion on the
11374 object in AcpiEvaluateObject.
11376 Integrated a fix for resource descriptors where both _MEM and _MTP were
11377 being extracted instead of just _MEM. (i.e. bitmask was incorrectly too
11378 wide, 0x0F instead of 0x03.)
11380 Added a special case for ACPI_ROOT_OBJECT in AcpiUtGetNodeName,
11383 fault in some cases.
11385 Updated Notify() values for debug statements in evmisc.c
11387 Return proper status from AcpiUtMutexInitialize, not just simply AE_OK.
11389 Code and Data Size: Current and previous core subsystem library sizes are
11390 shown below. These are the code and data sizes for the acpica.lib
11392 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11393 any ACPI driver or OSPM code. The debug version of the code includes the
11394 debug output trace mechanism and has a much larger code and data size.
11396 that these values will vary depending on the efficiency of the compiler
11398 the compiler options used during generation.
11402 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
11403 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
11405 Non-Debug Version: 76.9K Code, 11.4K Data, 88.3K Total
11406 Debug Version: 160.8K Code, 66.1K Data, 226.9K Total
11408 ----------------------------------------
11409 11 March 2004. Summary of changes for version 20040311:
11411 1) ACPI CA Core Subsystem:
11413 Fixed a problem where errors occurring during the parse phase of control
11414 method execution did not abort cleanly. For example, objects created and
11415 installed in the namespace were not deleted. This caused all subsequent
11416 invocations of the method to return the AE_ALREADY_EXISTS exception.
11418 Implemented a mechanism to force a control method to "Serialized"
11420 if the method attempts to create namespace objects. (The root of the
11421 AE_ALREADY_EXISTS problem.)
11423 Implemented support for the predefined _OSI "internal" control method.
11424 Initial supported strings are "Linux", "Windows 2000", "Windows 2001",
11426 "Windows 2001.1", and can be easily upgraded for new strings as
11428 This feature will allow "other" operating systems to execute the fully
11429 tested, "Windows" code path through the ASL code
11431 Global Lock Support: Now allows multiple acquires and releases with any
11432 internal thread. Removed concept of "owning thread" for this special
11435 Fixed two functions that were inappropriately declaring large objects on
11437 CPU stack: PsParseLoop, NsEvaluateRelative. Reduces the stack usage
11439 method execution considerably.
11441 Fixed a problem in the ACPI 2.0 FACS descriptor (actbl2.h) where the
11442 S4Bios_f field was incorrectly defined as UINT32 instead of UINT32_BIT.
11444 Fixed a problem where AcpiEvGpeDetect would fault if there were no GPEs
11445 defined on the machine.
11447 Implemented two runtime options: One to force all control method
11449 to "Serialized" to mimic Windows behavior, another to disable _OSI
11451 if it causes problems on a given machine.
11453 Code and Data Size: Current and previous core subsystem library sizes are
11454 shown below. These are the code and data sizes for the acpica.lib
11456 by the Microsoft Visual C++ 6.0 compiler, and these values do not include
11457 any ACPI driver or OSPM code. The debug version of the code includes the
11458 debug output trace mechanism and has a much larger code and data size.
11460 that these values will vary depending on the efficiency of the compiler
11462 the compiler options used during generation.
11465 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
11466 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
11468 Non-Debug Version: 76.5K Code, 11.3K Data, 87.8K Total
11469 Debug Version: 160.3K Code, 66.0K Data, 226.3K Total
11471 2) iASL Compiler/Disassembler:
11473 Fixed an array size problem for FreeBSD that would cause the compiler to
11476 ----------------------------------------
11477 20 February 2004. Summary of changes for version 20040220:
11480 1) ACPI CA Core Subsystem:
11482 Implemented execution of _SxD methods for Device objects in the
11483 GetObjectInfo interface.
11485 Fixed calls to _SST method to pass the correct arguments.
11487 Added a call to _SST on wake to restore to "working" state.
11489 Check for End-Of-Buffer failure case in the WalkResources interface.
11491 Integrated fix for 64-bit alignment issue in acglobal.h by moving two
11492 structures to the beginning of the file.
11494 After wake, clear GPE status register(s) before enabling GPEs.
11496 After wake, clear/enable power button. (Perhaps we should clear/enable
11498 fixed events upon wake.)
11500 Fixed a couple of possible memory leaks in the Namespace manager.
11502 Integrated latest acnetbsd.h file.
11504 ----------------------------------------
11505 11 February 2004. Summary of changes for version 20040211:
11508 1) ACPI CA Core Subsystem:
11510 Completed investigation and implementation of the call-by-reference
11511 mechanism for control method arguments.
11513 Fixed a problem where a store of an object into an indexed package could
11514 fail if the store occurs within a different method than the method that
11515 created the package.
11517 Fixed a problem where the ToDecimal operator could return incorrect
11520 Fixed a problem where the CopyObject operator could fail on some of the
11522 obscure objects (e.g., Reference objects.)
11524 Improved the output of the Debug object to display buffer, package, and
11527 Fixed a problem where constructs of the form "RefOf (ArgX)" did not
11529 the expected result.
11531 Added permanent ACPI_REPORT_ERROR macros for all instances of the
11532 ACPI_AML_INTERNAL exception.
11534 Integrated latest version of acfreebsd.h
11536 ----------------------------------------
11537 16 January 2004. Summary of changes for version 20040116:
11539 The purpose of this release is primarily to update the copyright years in
11540 each module, thus causing a huge number of diffs. There are a few small
11541 functional changes, however.
11543 1) ACPI CA Core Subsystem:
11545 Improved error messages when there is a problem finding one or more of
11547 required base ACPI tables
11549 Reintroduced the definition of APIC_HEADER in actbl.h
11551 Changed definition of MADT_ADDRESS_OVERRIDE to 64 bits (actbl.h)
11553 Removed extraneous reference to NewObj in dsmthdat.c
11557 Fixed a problem introduced in December that disabled the correct
11559 of Resource Templates
11562 ----------------------------------------
11563 03 December 2003. Summary of changes for version 20031203:
11565 1) ACPI CA Core Subsystem:
11567 Changed the initialization of Operation Regions during subsystem
11568 init to perform two entire walks of the ACPI namespace; The first
11569 to initialize the regions themselves, the second to execute the
11570 _REG methods. This fixed some interdependencies across _REG
11571 methods found on some machines.
11573 Fixed a problem where a Store(Local0, Local1) could simply update
11574 the object reference count, and not create a new copy of the
11575 object if the Local1 is uninitialized.
11577 Implemented support for the _SST reserved method during sleep
11580 Implemented support to clear the SLP_TYP and SLP_EN bits when
11581 waking up, this is apparently required by some machines.
11583 When sleeping, clear the wake status only if SleepState is not S5.
11585 Fixed a problem in AcpiRsExtendedIrqResource() where an incorrect
11586 pointer arithmetic advanced a string pointer too far.
11588 Fixed a problem in AcpiTbGetTablePtr() where a garbage pointer
11589 could be returned if the requested table has not been loaded.
11591 Within the support for IRQ resources, restructured the handling of
11592 the active and edge/level bits.
11594 Fixed a few problems in AcpiPsxExecute() where memory could be
11595 leaked under certain error conditions.
11597 Improved error messages for the cases where the ACPI mode could
11600 Code and Data Size: Current and previous core subsystem library
11601 sizes are shown below. These are the code and data sizes for the
11602 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
11603 these values do not include any ACPI driver or OSPM code. The
11604 debug version of the code includes the debug output trace
11605 mechanism and has a much larger code and data size. Note that
11606 these values will vary depending on the efficiency of the compiler
11607 and the compiler options used during generation.
11609 Previous Release (20031029):
11610 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
11611 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
11613 Non-Debug Version: 74.8K Code, 10.1K Data, 84.9K Total
11614 Debug Version: 158.7K Code, 65.1K Data, 223.8K Total
11616 2) iASL Compiler/Disassembler:
11618 Implemented a fix for the iASL disassembler where a bad index was
11619 generated. This was most noticeable on 64-bit platforms
11622 ----------------------------------------
11623 29 October 2003. Summary of changes for version 20031029:
11625 1) ACPI CA Core Subsystem:
11628 Fixed a problem where a level-triggered GPE with an associated
11629 _Lxx control method was incorrectly cleared twice.
11631 Fixed a problem with the Field support code where an access can
11632 occur beyond the end-of-region if the field is non-aligned but
11633 extends to the very end of the parent region (resulted in an
11634 AE_AML_REGION_LIMIT exception.)
11636 Fixed a problem with ACPI Fixed Events where an RT Clock handler
11637 would not get invoked on an RTC event. The RTC event bitmasks for
11638 the PM1 registers were not being initialized properly.
11640 Implemented support for executing _STA and _INI methods for
11641 Processor objects. Although this is currently not part of the
11642 ACPI specification, there is existing ASL code that depends on the
11643 init-time execution of these methods.
11645 Implemented and deployed a GetDescriptorName function to decode
11646 the various types of internal descriptors. Guards against null
11647 descriptors during debug output also.
11649 Implemented and deployed a GetNodeName function to extract the 4-
11650 character namespace node name. This function simplifies the debug
11651 and error output, as well as guarding against null pointers during
11654 Implemented and deployed the ACPI_FORMAT_UINT64 helper macro to
11655 simplify the debug and error output of 64-bit integers. This
11656 macro replaces the HIDWORD and LODWORD macros for dumping these
11659 Updated the implementation of the Stall() operator to only call
11660 AcpiOsStall(), and also return an error if the operand is larger
11661 than 255. This preserves the required behavior of not
11662 relinquishing the processor, as would happen if AcpiOsSleep() was
11663 called for "long stalls".
11665 Constructs of the form "Store(LocalX,LocalX)" where LocalX is not
11666 initialized are now treated as NOOPs.
11668 Cleaned up a handful of warnings during 64-bit generation.
11670 Fixed a reported error where and incorrect GPE number was passed
11671 to the GPE dispatch handler. This value is only used for error
11672 output, however. Used this opportunity to clean up and streamline
11673 the GPE dispatch code.
11675 Code and Data Size: Current and previous core subsystem library
11676 sizes are shown below. These are the code and data sizes for the
11677 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
11678 these values do not include any ACPI driver or OSPM code. The
11680 debug version of the code includes the debug output trace
11681 mechanism and has a much larger code and data size. Note that
11682 these values will vary depending on the efficiency of the compiler
11683 and the compiler options used during generation.
11685 Previous Release (20031002):
11686 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
11687 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
11689 Non-Debug Version: 74.4K Code, 10.1K Data, 84.5K Total
11690 Debug Version: 158.3K Code, 65.0K Data, 223.3K Total
11693 2) iASL Compiler/Disassembler:
11695 Updated the iASL compiler to return an error if the operand to the
11696 Stall() operator is larger than 255.
11699 ----------------------------------------
11700 02 October 2003. Summary of changes for version 20031002:
11703 1) ACPI CA Core Subsystem:
11705 Fixed a problem with Index Fields where the index was not
11706 incremented for fields that require multiple writes to the
11707 index/data registers (Fields that are wider than the data
11710 Fixed a problem with all Field objects where a write could go
11711 beyond the end-of-field if the field was larger than the access
11712 granularity and therefore required multiple writes to complete the
11713 request. An extra write beyond the end of the field could happen
11716 Fixed a problem with Index Fields where a BUFFER_OVERFLOW error
11717 would incorrectly be returned if the width of the Data Register
11718 was larger than the specified field access width.
11720 Completed fixes for LoadTable() and Unload() and verified their
11721 operation. Implemented full support for the "DdbHandle" object
11722 throughout the ACPI CA subsystem.
11724 Implemented full support for the MADT and ECDT tables in the ACPI
11725 CA header files. Even though these tables are not directly
11726 consumed by ACPI CA, the header definitions are useful for ACPI
11729 Integrated resource descriptor fixes posted to the Linux ACPI
11730 list. This included checks for minimum descriptor length, and
11731 support for trailing NULL strings within descriptors that have
11732 optional string elements.
11734 Code and Data Size: Current and previous core subsystem library
11735 sizes are shown below. These are the code and data sizes for the
11736 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
11737 these values do not include any ACPI driver or OSPM code. The
11738 debug version of the code includes the debug output trace
11739 mechanism and has a much larger code and data size. Note that
11740 these values will vary depending on the efficiency of the compiler
11741 and the compiler options used during generation.
11743 Previous Release (20030918):
11744 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
11745 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
11747 Non-Debug Version: 74.1K Code, 9.7K Data, 83.8K Total
11748 Debug Version: 157.9K Code, 64.8K Data, 222.7K Total
11753 Implemented detection of non-ASCII characters within the input
11754 source ASL file. This catches attempts to compile binary (AML)
11755 files early in the compile, with an informative error message.
11757 Fixed a problem where the disassembler would fault if the output
11758 filename could not be generated or if the output file could not be
11761 ----------------------------------------
11762 18 September 2003. Summary of changes for version 20030918:
11765 1) ACPI CA Core Subsystem:
11767 Found and fixed a longstanding problem with the late execution of
11768 the various deferred AML opcodes (such as Operation Regions,
11769 Buffer Fields, Buffers, and Packages). If the name string
11770 specified for the name of the new object placed the object in a
11771 scope other than the current scope, the initialization/execution
11772 of the opcode failed. The solution to this problem was to
11773 implement a mechanism where the late execution of such opcodes
11774 does not attempt to lookup/create the name a second time in an
11775 incorrect scope. This fixes the "region size computed
11776 incorrectly" problem.
11778 Fixed a call to AcpiHwRegisterWrite in hwregs.c that was causing a
11779 Global Lock AE_BAD_PARAMETER error.
11781 Fixed several 64-bit issues with prototypes, casting and data
11784 Removed duplicate prototype from acdisasm.h
11786 Fixed an issue involving EC Operation Region Detach (Shaohua Li)
11788 Code and Data Size: Current and previous core subsystem library
11789 sizes are shown below. These are the code and data sizes for the
11790 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
11791 these values do not include any ACPI driver or OSPM code. The
11792 debug version of the code includes the debug output trace
11793 mechanism and has a much larger code and data size. Note that
11794 these values will vary depending on the efficiency of the compiler
11795 and the compiler options used during generation.
11799 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
11800 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
11802 Non-Debug Version: 73.9K Code, 9.7K Data, 83.6K Total
11803 Debug Version: 157.3K Code, 64.5K Data, 221.8K Total
11808 Fixed the AcpiOsSleep implementation in osunixxf.c to pass the
11809 correct sleep time in seconds.
11811 ----------------------------------------
11812 14 July 2003. Summary of changes for version 20030619:
11814 1) ACPI CA Core Subsystem:
11816 Parse SSDTs in order discovered, as opposed to reverse order
11819 Fixes from FreeBSD and NetBSD. (Frank van der Linden, Thomas
11826 Dynamically allocate SDT list (suggested by Andi Kleen)
11828 proc function return value cleanups (Andi Kleen)
11830 Correctly handle NMI watchdog during long stalls (Andrew Morton)
11832 Make it so acpismp=force works (reported by Andrew Morton)
11835 ----------------------------------------
11836 19 June 2003. Summary of changes for version 20030619:
11838 1) ACPI CA Core Subsystem:
11840 Fix To/FromBCD, eliminating the need for an arch-specific #define.
11842 Do not acquire a semaphore in the S5 shutdown path.
11844 Fix ex_digits_needed for 0. (Takayoshi Kochi)
11846 Fix sleep/stall code reversal. (Andi Kleen)
11848 Revert a change having to do with control method calling
11853 acpiphp update (Takayoshi Kochi)
11855 Export acpi_disabled for sonypi (Stelian Pop)
11857 Mention acpismp=force in config help
11859 Re-add acpitable.c and acpismp=force. This improves backwards
11861 compatibility and also cleans up the code to a significant degree.
11863 Add ASUS Value-add driver (Karol Kozimor and Julien Lerouge)
11865 ----------------------------------------
11866 22 May 2003. Summary of changes for version 20030522:
11868 1) ACPI CA Core Subsystem:
11870 Found and fixed a reported problem where an AE_NOT_FOUND error
11871 occurred occasionally during _BST evaluation. This turned out to
11872 be an Owner ID allocation issue where a called method did not get
11873 a new ID assigned to it. Eventually, (after 64k calls), the Owner
11874 ID UINT16 would wraparound so that the ID would be the same as the
11875 caller's and the called method would delete the caller's
11878 Implemented extended error reporting for control methods that are
11879 aborted due to a run-time exception. Output includes the exact
11880 AML instruction that caused the method abort, a dump of the method
11881 locals and arguments at the time of the abort, and a trace of all
11882 nested control method calls.
11884 Modified the interpreter to allow the creation of buffers of zero
11885 length from the AML code. Implemented new code to ensure that no
11886 attempt is made to actually allocate a memory buffer (of length
11887 zero) - instead, a simple buffer object with a NULL buffer pointer
11888 and length zero is created. A warning is no longer issued when
11889 the AML attempts to create a zero-length buffer.
11891 Implemented a workaround for the "leading asterisk issue" in
11892 _HIDs, _UIDs, and _CIDs in the AML interpreter. One leading
11893 asterisk is automatically removed if present in any HID, UID, or
11894 CID strings. The iASL compiler will still flag this asterisk as
11897 Implemented full support for _CID methods that return a package of
11898 multiple CIDs (Compatible IDs). The AcpiGetObjectInfo() interface
11899 now additionally returns a device _CID list if present. This
11900 required a change to the external interface in order to pass an
11901 ACPI_BUFFER object as a parameter since the _CID list is of
11904 Fixed a problem with the new AE_SAME_HANDLER exception where
11905 handler initialization code did not know about this exception.
11907 Code and Data Size: Current and previous core subsystem library
11908 sizes are shown below. These are the code and data sizes for the
11909 acpica.lib produced by the Microsoft Visual C++ 6.0 compiler, and
11910 these values do not include any ACPI driver or OSPM code. The
11911 debug version of the code includes the debug output trace
11912 mechanism and has a much larger code and data size. Note that
11913 these values will vary depending on the efficiency of the compiler
11914 and the compiler options used during generation.
11916 Previous Release (20030509):
11917 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
11918 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
11920 Non-Debug Version: 73.7K Code, 9.7K Data, 83.4K Total
11921 Debug Version: 156.9K Code, 64.2K Data, 221.1K Total
11926 Fixed a bug in which we would reinitialize the ACPI interrupt
11927 after it was already working, thus disabling all ACPI and the IRQs
11928 for any other device sharing the interrupt. (Thanks to Stian
11931 Toshiba driver update (John Belmonte)
11933 Return only 0 or 1 for our interrupt handler status (Andrew
11939 Fixed a reported problem where multiple (nested) ElseIf()
11940 statements were not handled correctly by the compiler, resulting
11941 in incorrect warnings and incorrect AML code. This was a problem
11942 in both the ASL parser and the code generator.
11947 Added changes to existing interfaces, new exception codes, and new
11948 text concerning reference count object management versus garbage
11951 ----------------------------------------
11952 09 May 2003. Summary of changes for version 20030509.
11955 1) ACPI CA Core Subsystem:
11957 Changed the subsystem initialization sequence to hold off
11958 installation of address space handlers until the hardware has been
11959 initialized and the system has entered ACPI mode. This is because
11960 the installation of space handlers can cause _REG methods to be
11961 run. Previously, the _REG methods could potentially be run before
11962 ACPI mode was enabled.
11964 Fixed some memory leak issues related to address space handler and
11965 notify handler installation. There were some problems with the
11966 reference count mechanism caused by the fact that the handler
11967 objects are shared across several namespace objects.
11969 Fixed a reported problem where reference counts within the
11970 namespace were not properly updated when named objects created by
11971 method execution were deleted.
11973 Fixed a reported problem where multiple SSDTs caused a deletion
11974 issue during subsystem termination. Restructured the table data
11975 structures to simplify the linked lists and the related code.
11977 Fixed a problem where the table ID associated with secondary
11978 tables (SSDTs) was not being propagated into the namespace objects
11979 created by those tables. This would only present a problem for
11980 tables that are unloaded at run-time, however.
11982 Updated AcpiOsReadable and AcpiOsWritable to use the ACPI_SIZE
11983 type as the length parameter (instead of UINT32).
11985 Solved a long-standing problem where an ALREADY_EXISTS error
11986 appears on various systems. This problem could happen when there
11987 are multiple PCI_Config operation regions under a single PCI root
11988 bus. This doesn't happen very frequently, but there are some
11989 systems that do this in the ASL.
11991 Fixed a reported problem where the internal DeleteNode function
11992 was incorrectly handling the case where a namespace node was the
11993 first in the parent's child list, and had additional peers (not
11994 the only child, but first in the list of children.)
11996 Code and Data Size: Current core subsystem library sizes are shown
11997 below. These are the code and data sizes for the acpica.lib
11998 produced by the Microsoft Visual C++ 6.0 compiler, and these
11999 values do not include any ACPI driver or OSPM code. The debug
12000 version of the code includes the debug output trace mechanism and
12001 has a much larger code and data size. Note that these values will
12002 vary depending on the efficiency of the compiler and the compiler
12003 options used during generation.
12006 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
12007 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
12009 Non-Debug Version: 73.4K Code, 9.7K Data, 83.1K Total
12010 Debug Version: 156.1K Code, 63.9K Data, 220.0K Total
12015 Allow ":" in OS override string (Ducrot Bruno)
12017 Kobject fix (Greg KH)
12020 3 iASL Compiler/Disassembler:
12022 Fixed a problem in the generation of the C source code files (AML
12023 is emitted in C source statements for BIOS inclusion) where the
12024 Ascii dump that appears within a C comment at the end of each line
12025 could cause a compile time error if the AML sequence happens to
12026 have an open comment or close comment sequence embedded.
12029 ----------------------------------------
12030 24 April 2003. Summary of changes for version 20030424.
12033 1) ACPI CA Core Subsystem:
12035 Support for big-endian systems has been implemented. Most of the
12036 support has been invisibly added behind big-endian versions of the
12037 ACPI_MOVE_* macros.
12039 Fixed a problem in AcpiHwDisableGpeBlock() and
12040 AcpiHwClearGpeBlock() where an incorrect offset was passed to the
12041 low level hardware write routine. The offset parameter was
12042 actually eliminated from the low level read/write routines because
12043 they had become obsolete.
12045 Fixed a problem where a handler object was deleted twice during
12046 the removal of a fixed event handler.
12051 A fix for SMP systems with link devices was contributed by
12055 (2.5) Return whether we handled the interrupt in our IRQ handler.
12056 (Linux ISRs no longer return void, so we can propagate the handler
12057 return value from the ACPI CA core back to the OS.)
12063 The ACPI CA Programmer Reference has been updated to reflect new
12064 interfaces and changes to existing interfaces.
12066 ----------------------------------------
12067 28 March 2003. Summary of changes for version 20030328.
12069 1) ACPI CA Core Subsystem:
12071 The GPE Block Device support has been completed. New interfaces
12072 are AcpiInstallGpeBlock and AcpiRemoveGpeBlock. The Event
12073 interfaces (enable, disable, clear, getstatus) have been split
12074 into separate interfaces for Fixed Events and General Purpose
12075 Events (GPEs) in order to support GPE Block Devices properly.
12077 Fixed a problem where the error message "Failed to acquire
12078 semaphore" would appear during operations on the embedded
12081 Code and Data Size: Current core subsystem library sizes are shown
12082 below. These are the code and data sizes for the acpica.lib
12083 produced by the Microsoft Visual C++ 6.0 compiler, and these
12084 values do not include any ACPI driver or OSPM code. The debug
12085 version of the code includes the debug output trace mechanism and
12086 has a much larger code and data size. Note that these values will
12087 vary depending on the efficiency of the compiler and the compiler
12088 options used during generation.
12091 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
12092 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
12094 Non-Debug Version: 73.7K Code, 9.5K Data, 83.2K Total
12095 Debug Version: 156.1K Code, 63.6K Data, 219.7K Total
12098 ----------------------------------------
12099 28 February 2003. Summary of changes for version 20030228.
12102 1) ACPI CA Core Subsystem:
12104 The GPE handling and dispatch code has been completely overhauled
12105 in preparation for support of GPE Block Devices (ID ACPI0006).
12106 This affects internal data structures and code only; there should
12107 be no differences visible externally. One new file has been
12110 The FADT fields GPE0_BLK_LEN and GPE1_BLK_LEN are now the only
12111 fields that are used to determine the GPE block lengths. The
12112 REGISTER_BIT_WIDTH field of the X_GPEx_BLK extended address
12113 structures are ignored. This is per the ACPI specification but it
12114 isn't very clear. The full 256 Block 0/1 GPEs are now supported
12115 (the use of REGISTER_BIT_WIDTH limited the number of GPEs to 128).
12117 In the SCI interrupt handler, removed the read of the PM1_CONTROL
12118 register to look at the SCI_EN bit. On some machines, this read
12119 causes an SMI event and greatly slows down SCI events. (This may
12120 in fact be the cause of slow battery status response on some
12123 Fixed a problem where a store of a NULL string to a package object
12124 could cause the premature deletion of the object. This was seen
12125 during execution of the battery _BIF method on some systems,
12126 resulting in no battery data being returned.
12128 Added AcpiWalkResources interface to simplify parsing of resource
12131 Code and Data Size: Current core subsystem library sizes are shown
12132 below. These are the code and data sizes for the acpica.lib
12133 produced by the Microsoft Visual C++ 6.0 compiler, and these
12134 values do not include any ACPI driver or OSPM code. The debug
12135 version of the code includes the debug output trace mechanism and
12136 has a much larger code and data size. Note that these values will
12137 vary depending on the efficiency of the compiler and the compiler
12138 options used during generation.
12141 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
12142 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
12144 Non-Debug Version: 72.3K Code, 9.5K Data, 81.8K Total
12145 Debug Version: 154.0K Code, 63.4K Data, 217.4K Total
12150 S3 fixes (Ole Rohne)
12152 Update ACPI PHP driver with to use new acpi_walk_resource API
12155 Add S4BIOS support (Pavel Machek)
12157 Map in entire table before performing checksum (John Stultz)
12159 Expand the mem= cmdline to allow the specification of reserved and
12160 ACPI DATA blocks (Pavel Machek)
12162 Never use ACPI on VISWS
12164 Fix derive_pci_id (Ducrot Bruno, Alvaro Lopez)
12166 Revert a change that allowed P_BLK lengths to be 4 or 5. This is
12167 causing us to think that some systems support C2 when they really
12170 Do not count processor objects for non-present CPUs (Thanks to
12176 Fixed a problem where ASL include files could not be found and
12179 Added support for the _PDC reserved name.
12182 ----------------------------------------
12183 22 January 2003. Summary of changes for version 20030122.
12186 1) ACPI CA Core Subsystem:
12188 Added a check for constructs of the form: Store (Local0, Local0)
12189 where Local0 is not initialized. Apparently, some BIOS
12190 programmers believe that this is a NOOP. Since this store doesn't
12191 do anything anyway, the new prototype behavior will ignore this
12192 error. This is a case where we can relax the strict checking in
12193 the interpreter in the name of compatibility.
12198 The AcpiSrc Source Conversion Utility has been released with the
12199 Linux package for the first time. This is the utility that is
12200 used to convert the ACPI CA base source code to the Linux version.
12202 (Both) Handle P_BLK lengths shorter than 6 more gracefully
12204 (Both) Move more headers to include/acpi, and delete an unused
12207 (Both) Move drivers/acpi/include directory to include/acpi
12209 (Both) Boot functions don't use cmdline, so don't pass it around
12211 (Both) Remove include of unused header (Adrian Bunk)
12213 (Both) acpiphp.h includes both linux/acpi.h and acpi_bus.h. Since
12215 former now also includes the latter, acpiphp.h only needs the one,
12218 (2.5) Make it possible to select method of bios restoring after S3
12219 resume. [=> no more ugly ifdefs] (Pavel Machek)
12221 (2.5) Make proc write interfaces work (Pavel Machek)
12223 (2.5) Properly init/clean up in cpufreq/acpi (Dominik Brodowski)
12225 (2.5) Break out ACPI Perf code into its own module, under cpufreq
12226 (Dominik Brodowski)
12228 (2.4) S4BIOS support (Ducrot Bruno)
12230 (2.4) Fix acpiphp_glue.c for latest ACPI struct changes (Sergio
12236 Added support to disassemble SSDT and PSDTs.
12238 Implemented support to obtain SSDTs from the Windows registry if
12242 ----------------------------------------
12243 09 January 2003. Summary of changes for version 20030109.
12245 1) ACPI CA Core Subsystem:
12247 Changed the behavior of the internal Buffer-to-String conversion
12248 function. The current ACPI specification states that the contents
12249 of the buffer are "converted to a string of two-character
12250 hexadecimal numbers, each separated by a space". Unfortunately,
12251 this definition is not backwards compatible with existing ACPI 1.0
12252 implementations (although the behavior was not defined in the ACPI
12253 1.0 specification). The new behavior simply copies data from the
12254 buffer to the string until a null character is found or the end of
12255 the buffer is reached. The new String object is always null
12256 terminated. This problem was seen during the generation of _BIF
12257 battery data where incorrect strings were returned for battery
12258 type, etc. This will also require an errata to the ACPI
12261 Renamed all instances of NATIVE_UINT and NATIVE_INT to
12262 ACPI_NATIVE_UINT and ACPI_NATIVE_INT, respectively.
12264 Copyright in all module headers (both Linux and non-Linux) has be
12267 Code and Data Size: Current core subsystem library sizes are shown
12268 below. These are the code and data sizes for the acpica.lib
12269 produced by the Microsoft Visual C++ 6.0 compiler, and these
12270 values do not include any ACPI driver or OSPM code. The debug
12271 version of the code includes the debug output trace mechanism and
12272 has a much larger code and data size. Note that these values will
12273 vary depending on the efficiency of the compiler and the compiler
12274 options used during generation.
12277 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
12278 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
12280 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
12281 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
12286 Fixed an oops on module insertion/removal (Matthew Tippett)
12288 (2.4) Fix to handle dynamic size of mp_irqs (Joerg Prante)
12290 (2.5) Replace pr_debug (Randy Dunlap)
12292 (2.5) Remove usage of CPUFREQ_ALL_CPUS (Dominik Brodowski)
12294 (Both) Eliminate spawning of thread from timer callback, in favor
12297 (Both) Show Lid status in /proc (Zdenek OGAR Skalak)
12299 (Both) Added define for Fixed Function HW region (Matthew Wilcox)
12301 (Both) Add missing statics to button.c (Pavel Machek)
12303 Several changes have been made to the source code translation
12304 utility that generates the Linux Code in order to make the code
12307 All typedefs on structs and unions have been removed in keeping
12308 with the Linux coding style.
12310 Removed the non-Linux SourceSafe module revision number from each
12313 Completed major overhaul of symbols to be lowercased for linux.
12314 Doubled the number of symbols that are lowercased.
12316 Fixed a problem where identifiers within procedure headers and
12317 within quotes were not fully lower cased (they were left with a
12320 Some C macros whose only purpose is to allow the generation of 16-
12321 bit code are now completely removed in the Linux code, increasing
12322 readability and maintainability.
12324 ----------------------------------------
12326 12 December 2002. Summary of changes for version 20021212.
12329 1) ACPI CA Core Subsystem:
12331 Fixed a problem where the creation of a zero-length AML Buffer
12332 would cause a fault.
12334 Fixed a problem where a Buffer object that pointed to a static AML
12335 buffer (in an ACPI table) could inadvertently be deleted, causing
12338 Fixed a problem where a user buffer (passed in to the external
12339 ACPI CA interfaces) could be overwritten if the buffer was too
12340 small to complete the operation, causing memory corruption.
12342 Fixed a problem in the Buffer-to-String conversion code where a
12343 string of length one was always returned, regardless of the size
12344 of the input Buffer object.
12346 Removed the NATIVE_CHAR data type across the entire source due to
12347 lack of need and lack of consistent use.
12349 Code and Data Size: Current core subsystem library sizes are shown
12350 below. These are the code and data sizes for the acpica.lib
12351 produced by the Microsoft Visual C++ 6.0 compiler, and these
12352 values do not include any ACPI driver or OSPM code. The debug
12353 version of the code includes the debug output trace mechanism and
12354 has a much larger code and data size. Note that these values will
12355 vary depending on the efficiency of the compiler and the compiler
12356 options used during generation.
12359 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
12360 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
12362 Non-Debug Version: 72.0K Code, 9.5K Data, 81.5K Total
12363 Debug Version: 153.0K Code, 62.9K Data, 215.9K Total
12366 ----------------------------------------
12367 05 December 2002. Summary of changes for version 20021205.
12369 1) ACPI CA Core Subsystem:
12371 Fixed a problem where a store to a String or Buffer object could
12372 cause corruption of the DSDT if the object type being stored was
12373 the same as the target object type and the length of the object
12374 being stored was equal to or smaller than the original (existing)
12375 target object. This was seen to cause corruption of battery _BIF
12376 buffers if the _BIF method modified the buffer on the fly.
12378 Fixed a problem where an internal error was generated if a control
12379 method invocation was used in an OperationRegion, Buffer, or
12380 Package declaration. This was caused by the deferred parsing of
12381 the control method and thus the deferred creation of the internal
12382 method object. The solution to this problem was to create the
12383 internal method object at the moment the method is encountered in
12384 the first pass - so that subsequent references to the method will
12385 able to obtain the required parameter count and thus properly
12386 parse the method invocation. This problem presented itself as an
12387 AE_AML_INTERNAL during the pass 1 parse phase during table load.
12389 Fixed a problem where the internal String object copy routine did
12390 not always allocate sufficient memory for the target String object
12391 and caused memory corruption. This problem was seen to cause
12392 "Allocation already present in list!" errors as memory allocation
12395 Implemented a new function for the evaluation of namespace objects
12396 that allows the specification of the allowable return object
12397 types. This simplifies a lot of code that checks for a return
12398 object of one or more specific objects returned from the
12399 evaluation (such as _STA, etc.) This may become and external
12400 function if it would be useful to ACPI-related drivers.
12402 Completed another round of prefixing #defines with "ACPI_" for
12405 Completed additional code restructuring to allow more modular
12406 linking for iASL compiler and AcpiExec. Several files were split
12407 creating new files. New files: nsparse.c dsinit.c evgpe.c
12409 Implemented an abort mechanism to terminate an executing control
12410 method via the AML debugger. This feature is useful for debugging
12411 control methods that depend (wait) for specific hardware
12414 Code and Data Size: Current core subsystem library sizes are shown
12415 below. These are the code and data sizes for the acpica.lib
12416 produced by the Microsoft Visual C++ 6.0 compiler, and these
12417 values do not include any ACPI driver or OSPM code. The debug
12418 version of the code includes the debug output trace mechanism and
12419 has a much larger code and data size. Note that these values will
12420 vary depending on the efficiency of the compiler and the compiler
12421 options used during generation.
12424 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
12425 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
12427 Non-Debug Version: 72.1K Code, 9.5K Data, 81.6K Total
12428 Debug Version: 152.7K Code, 62.7K Data, 215.4K Total
12431 2) iASL Compiler/Disassembler
12433 Fixed a compiler code generation problem for "Interrupt" Resource
12434 Descriptors. If specified in the ASL, the optional "Resource
12435 Source Index" and "Resource Source" fields were not inserted into
12436 the correct location within the AML resource descriptor, creating
12437 an invalid descriptor.
12439 Fixed a disassembler problem for "Interrupt" resource descriptors.
12440 The optional "Resource Source Index" and "Resource Source" fields
12444 ----------------------------------------
12445 22 November 2002. Summary of changes for version 20021122.
12448 1) ACPI CA Core Subsystem:
12450 Fixed a reported problem where an object stored to a Method Local
12451 or Arg was not copied to a new object during the store - the
12452 object pointer was simply copied to the Local/Arg. This caused
12453 all subsequent operations on the Local/Arg to also affect the
12454 original source of the store operation.
12456 Fixed a problem where a store operation to a Method Local or Arg
12457 was not completed properly if the Local/Arg contained a reference
12458 (from RefOf) to a named field. The general-purpose store-to-
12459 namespace-node code is now used so that this case is handled
12462 Fixed a problem where the internal object copy routine would cause
12463 a protection fault if the object being copied was a Package and
12464 contained either 1) a NULL package element or 2) a nested sub-
12467 Fixed a problem with the GPE initialization that resulted from an
12468 ambiguity in the ACPI specification. One section of the
12469 specification states that both the address and length of the GPE
12470 block must be zero if the block is not supported. Another section
12471 implies that only the address need be zero if the block is not
12472 supported. The code has been changed so that both the address and
12473 the length must be non-zero to indicate a valid GPE block (i.e.,
12474 if either the address or the length is zero, the GPE block is
12477 Code and Data Size: Current core subsystem library sizes are shown
12478 below. These are the code and data sizes for the acpica.lib
12479 produced by the Microsoft Visual C++ 6.0 compiler, and these
12480 values do not include any ACPI driver or OSPM code. The debug
12481 version of the code includes the debug output trace mechanism and
12482 has a much larger code and data size. Note that these values will
12483 vary depending on the efficiency of the compiler and the compiler
12484 options used during generation.
12487 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
12488 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
12490 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
12491 Debug Version: 152.9K Code, 63.3K Data, 216.2K Total
12496 Cleaned up EC driver. Exported an external EC read/write
12497 interface. By going through this, other drivers (most notably
12498 sonypi) will be able to serialize access to the EC.
12501 3) iASL Compiler/Disassembler
12503 Implemented support to optionally generate include files for both
12504 ASM and C (the -i switch). This simplifies BIOS development by
12505 automatically creating include files that contain external
12506 declarations for the symbols that are created within the
12508 (optionally generated) ASM and C AML source files.
12511 ----------------------------------------
12512 15 November 2002. Summary of changes for version 20021115.
12514 1) ACPI CA Core Subsystem:
12516 Fixed a memory leak problem where an error during resolution of
12518 method arguments during a method invocation from another method
12519 failed to cleanup properly by deleting all successfully resolved
12522 Fixed a problem where the target of the Index() operator was not
12523 correctly constructed if the source object was a package. This
12524 problem has not been detected because the use of a target operand
12525 with Index() is very rare.
12527 Fixed a problem with the Index() operator where an attempt was
12528 made to delete the operand objects twice.
12530 Fixed a problem where an attempt was made to delete an operand
12531 twice during execution of the CondRefOf() operator if the target
12534 Implemented the first of perhaps several internal create object
12535 functions that create and initialize a specific object type. This
12536 consolidates duplicated code wherever the object is created, thus
12537 shrinking the size of the subsystem.
12539 Implemented improved debug/error messages for errors that occur
12540 during nested method invocations. All executing method pathnames
12541 are displayed (with the error) as the call stack is unwound - thus
12544 Fixed a problem introduced in the 10/02 release that caused
12545 premature deletion of a buffer object if a buffer was used as an
12546 ASL operand where an integer operand is required (Thus causing an
12547 implicit object conversion from Buffer to Integer.) The change in
12548 the 10/02 release was attempting to fix a memory leak (albeit
12551 Code and Data Size: Current core subsystem library sizes are shown
12552 below. These are the code and data sizes for the acpica.lib
12553 produced by the Microsoft Visual C++ 6.0 compiler, and these
12554 values do not include any ACPI driver or OSPM code. The debug
12555 version of the code includes the debug output trace mechanism and
12556 has a much larger code and data size. Note that these values will
12557 vary depending on the efficiency of the compiler and the compiler
12558 options used during generation.
12561 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
12562 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
12564 Non-Debug Version: 71.3K Code, 9.0K Data, 80.3K Total
12565 Debug Version: 152.7K Code, 63.2K Data, 215.5K Total
12570 Changed the implementation of the ACPI semaphores to use down()
12571 instead of down_interruptable(). It is important that the
12572 execution of ACPI control methods not be interrupted by signals.
12573 Methods must run to completion, or the system may be left in an
12574 unknown/unstable state.
12576 Fixed a compilation error when CONFIG_SOFTWARE_SUSPEND is not set.
12580 3) iASL Compiler/Disassembler
12583 Changed the default location of output files. All output files
12584 are now placed in the current directory by default instead of in
12585 the directory of the source file. This change may affect some
12586 existing makefiles, but it brings the behavior of the compiler in
12587 line with other similar tools. The location of the output files
12588 can be overridden with the -p command line switch.
12591 ----------------------------------------
12592 11 November 2002. Summary of changes for version 20021111.
12595 0) ACPI Specification 2.0B is released and is now available at:
12596 http://www.acpi.info/index.html
12599 1) ACPI CA Core Subsystem:
12601 Implemented support for the ACPI 2.0 SMBus Operation Regions.
12602 This includes the early detection and handoff of the request to
12603 the SMBus region handler (avoiding all of the complex field
12604 support code), and support for the bidirectional return packet
12605 from an SMBus write operation. This paves the way for the
12606 development of SMBus drivers in each host operating system.
12608 Fixed a problem where the semaphore WAIT_FOREVER constant was
12609 defined as 32 bits, but must be 16 bits according to the ACPI
12610 specification. This had the side effect of causing ASL
12611 Mutex/Event timeouts even though the ASL code requested a wait
12612 forever. Changed all internal references to the ACPI timeout
12613 parameter to 16 bits to prevent future problems. Changed the name
12614 of WAIT_FOREVER to ACPI_WAIT_FOREVER.
12616 Code and Data Size: Current core subsystem library sizes are shown
12617 below. These are the code and data sizes for the acpica.lib
12618 produced by the Microsoft Visual C++ 6.0 compiler, and these
12619 values do not include any ACPI driver or OSPM code. The debug
12620 version of the code includes the debug output trace mechanism and
12621 has a much larger code and data size. Note that these values will
12622 vary depending on the efficiency of the compiler and the compiler
12623 options used during generation.
12626 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
12627 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
12629 Non-Debug Version: 71.9K Code, 9.1K Data, 81.0K Total
12630 Debug Version: 153.1K Code, 63.3K Data, 216.4K Total
12635 Module loading/unloading fixes (John Cagle)
12638 3) iASL Compiler/Disassembler
12640 Added support for the SMBBlockProcessCall keyword (ACPI 2.0)
12642 Implemented support for the disassembly of all SMBus protocol
12643 keywords (SMBQuick, SMBWord, etc.)
12645 ----------------------------------------
12646 01 November 2002. Summary of changes for version 20021101.
12649 1) ACPI CA Core Subsystem:
12651 Fixed a problem where platforms that have a GPE1 block but no GPE0
12652 block were not handled correctly. This resulted in a "GPE
12653 overlap" error message. GPE0 is no longer required.
12655 Removed code added in the previous release that inserted nodes
12656 into the namespace in alphabetical order. This caused some side-
12657 effects on various machines. The root cause of the problem is
12658 still under investigation since in theory, the internal ordering
12659 of the namespace nodes should not matter.
12662 Enhanced error reporting for the case where a named object is not
12663 found during control method execution. The full ACPI namepath
12664 (name reference) of the object that was not found is displayed in
12667 Note: as a result of the overhaul of the namespace object types in
12668 the previous release, the namespace nodes for the predefined
12669 scopes (_TZ, _PR, etc.) are now of the type ACPI_TYPE_LOCAL_SCOPE
12670 instead of ACPI_TYPE_ANY. This simplifies the namespace
12671 management code but may affect code that walks the namespace tree
12672 looking for specific object types.
12674 Code and Data Size: Current core subsystem library sizes are shown
12675 below. These are the code and data sizes for the acpica.lib
12676 produced by the Microsoft Visual C++ 6.0 compiler, and these
12677 values do not include any ACPI driver or OSPM code. The debug
12678 version of the code includes the debug output trace mechanism and
12679 has a much larger code and data size. Note that these values will
12680 vary depending on the efficiency of the compiler and the compiler
12681 options used during generation.
12684 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
12685 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
12687 Non-Debug Version: 71.4K Code, 9.0K Data, 80.4K Total
12688 Debug Version: 152.3K Code, 63.0K Data, 215.3K Total
12693 Fixed a problem introduced in the previous release where the
12694 Processor and Thermal objects were not recognized and installed in
12695 /proc. This was related to the scope type change described above.
12698 3) iASL Compiler/Disassembler
12700 Implemented the -g option to get all of the required ACPI tables
12701 from the registry and save them to files (Windows version of the
12702 compiler only.) The required tables are the FADT, FACS, and DSDT.
12704 Added ACPI table checksum validation during table disassembly in
12705 order to catch corrupted tables.
12708 ----------------------------------------
12709 22 October 2002. Summary of changes for version 20021022.
12711 1) ACPI CA Core Subsystem:
12713 Implemented a restriction on the Scope operator that the target
12714 must already exist in the namespace at the time the operator is
12715 encountered (during table load or method execution). In other
12716 words, forward references are not allowed and Scope() cannot
12717 create a new object. This changes the previous behavior where the
12718 interpreter would create the name if not found. This new behavior
12719 correctly enables the search-to-root algorithm during namespace
12720 lookup of the target name. Because of this upsearch, this fixes
12721 the known Compaq _SB_.OKEC problem and makes both the AML
12722 interpreter and iASL compiler compatible with other ACPI
12725 Completed a major overhaul of the internal ACPI object types for
12726 the ACPI Namespace and the associated operand objects. Many of
12727 these types had become obsolete with the introduction of the two-
12728 pass namespace load. This cleanup simplifies the code and makes
12729 the entire namespace load mechanism much clearer and easier to
12732 Improved debug output for tracking scope opening/closing to help
12733 diagnose scoping issues. The old scope name as well as the new
12734 scope name are displayed. Also improved error messages for
12735 problems with ASL Mutex objects and error messages for GPE
12738 Cleaned up the namespace dump code, removed obsolete code.
12740 All string output (for all namespace/object dumps) now uses the
12741 common ACPI string output procedure which handles escapes properly
12742 and does not emit non-printable characters.
12744 Fixed some issues with constants in the 64-bit version of the
12745 local C library (utclib.c)
12750 EC Driver: No longer attempts to acquire the Global Lock at
12754 3) iASL Compiler/Disassembler
12756 Implemented ACPI 2.0B grammar change that disallows all Type 1 and
12757 2 opcodes outside of a control method. This means that the
12758 "executable" operators (versus the "namespace" operators) cannot
12759 be used at the table level; they can only be used within a control
12762 Implemented the restriction on the Scope() operator where the
12763 target must already exist in the namespace at the time the
12764 operator is encountered (during ASL compilation). In other words,
12765 forward references are not allowed and Scope() cannot create a new
12766 object. This makes the iASL compiler compatible with other ACPI
12767 implementations and makes the Scope() implementation adhere to the
12768 ACPI specification.
12770 Fixed a problem where namepath optimization for the Alias operator
12771 was optimizing the wrong path (of the two namepaths.) This caused
12772 a "Missing alias link" error message.
12774 Fixed a problem where an "unknown reserved name" warning could be
12775 incorrectly generated for names like "_SB" when the trailing
12776 underscore is not used in the original ASL.
12778 Fixed a problem where the reserved name check did not handle
12779 NamePaths with multiple NameSegs correctly. The first nameseg of
12780 the NamePath was examined instead of the last NameSeg.
12783 ----------------------------------------
12785 02 October 2002. Summary of changes for this release.
12788 1) ACPI CA Core Subsystem version 20021002:
12790 Fixed a problem where a store/copy of a string to an existing
12791 string did not always set the string length properly in the String
12794 Fixed a reported problem with the ToString operator where the
12795 behavior was identical to the ToHexString operator instead of just
12796 simply converting a raw buffer to a string data type.
12798 Fixed a problem where CopyObject and the other "explicit"
12799 conversion operators were not updating the internal namespace node
12800 type as part of the store operation.
12802 Fixed a memory leak during implicit source operand conversion
12803 where the original object was not deleted if it was converted to a
12804 new object of a different type.
12806 Enhanced error messages for all problems associated with namespace
12807 lookups. Common procedure generates and prints the lookup name as
12808 well as the formatted status.
12810 Completed implementation of a new design for the Alias support
12811 within the namespace. The existing design did not handle the case
12812 where a new object was assigned to one of the two names due to the
12813 use of an explicit conversion operator, resulting in the two names
12814 pointing to two different objects. The new design simply points
12815 the Alias name to the original name node - not to the object.
12816 This results in a level of indirection that must be handled in the
12817 name resolution mechanism.
12819 Code and Data Size: Current core subsystem library sizes are shown
12820 below. These are the code and data sizes for the acpica.lib
12821 produced by the Microsoft Visual C++ 6.0 compiler, and these
12822 values do not include any ACPI driver or OSPM code. The debug
12823 version of the code includes the debug output trace mechanism and
12824 has a larger code and data size. Note that these values will vary
12825 depending on the efficiency of the compiler and the compiler
12826 options used during generation.
12829 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
12830 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
12832 Non-Debug Version: 70.7K Code, 8.6K Data, 79.3K Total
12833 Debug Version: 151.7K Code, 62.4K Data, 214.1K Total
12838 Initialize thermal driver's timer before it is used. (Knut
12841 Allow handling negative celsius values. (Kochi Takayoshi)
12843 Fix thermal management and make trip points. R/W (Pavel Machek)
12845 Fix /proc/acpi/sleep. (P. Christeas)
12847 IA64 fixes. (David Mosberger)
12849 Fix reversed logic in blacklist code. (Sergio Monteiro Basto)
12851 Replace ACPI_DEBUG define with ACPI_DEBUG_OUTPUT. (Dominik
12855 3) iASL Compiler/Disassembler
12857 Clarified some warning/error messages.
12860 ----------------------------------------
12861 18 September 2002. Summary of changes for this release.
12864 1) ACPI CA Core Subsystem version 20020918:
12866 Fixed a reported problem with reference chaining (via the Index()
12867 and RefOf() operators) in the ObjectType() and SizeOf() operators.
12868 The definition of these operators includes the dereferencing of
12869 all chained references to return information on the base object.
12871 Fixed a problem with stores to indexed package elements - the
12872 existing code would not complete the store if an "implicit
12873 conversion" was not performed. In other words, if the existing
12874 object (package element) was to be replaced completely, the code
12875 didn't handle this case.
12877 Relaxed typechecking on the ASL "Scope" operator to allow the
12878 target name to refer to an object of type Integer, String, or
12879 Buffer, in addition to the scoping object types (Device,
12880 predefined Scopes, Processor, PowerResource, and ThermalZone.)
12881 This allows existing AML code that has workarounds for a bug in
12882 Windows to function properly. A warning is issued, however. This
12883 affects both the AML interpreter and the iASL compiler. Below is
12884 an example of this type of ASL code:
12890 Fixed some reported problems with 64-bit integer support in the
12891 local implementation of C library functions (clib.c)
12896 Use ACPI fix map region instead of IOAPIC region, since it is
12897 undefined in non-SMP.
12899 Ensure that the SCI has the proper polarity and trigger, even on
12900 systems that do not have an interrupt override entry in the MADT.
12902 2.5 big driver reorganization (Pat Mochel)
12904 Use early table mapping code from acpitable.c (Andi Kleen)
12906 New blacklist entries (Andi Kleen)
12908 Blacklist improvements. Split blacklist code out into a separate
12909 file. Move checking the blacklist to very early. Previously, we
12910 would use ACPI tables, and then halfway through init, check the
12911 blacklist -- too late. Now, it's early enough to completely fall-
12915 3) iASL Compiler/Disassembler version 20020918:
12917 Fixed a problem where the typechecking code didn't know that an
12918 alias could point to a method. In other words, aliases were not
12919 being dereferenced during typechecking.
12922 ----------------------------------------
12923 29 August 2002. Summary of changes for this release.
12925 1) ACPI CA Core Subsystem Version 20020829:
12927 If the target of a Scope() operator already exists, it must be an
12928 object type that actually opens a scope -- such as a Device,
12929 Method, Scope, etc. This is a fatal runtime error. Similar error
12930 check has been added to the iASL compiler also.
12932 Tightened up the namespace load to disallow multiple names in the
12933 same scope. This previously was allowed if both objects were of
12934 the same type. (i.e., a lookup was the same as entering a new
12940 Ensure that the ACPI interrupt has the proper trigger and
12943 local_irq_disable is extraneous. (Matthew Wilcox)
12945 Make "acpi=off" actually do what it says, and not use the ACPI
12946 interpreter *or* the tables.
12948 Added arch-neutral support for parsing SLIT and SRAT tables (Kochi
12952 3) iASL Compiler/Disassembler Version 20020829:
12954 Implemented namepath optimization for name declarations. For
12955 example, a declaration like "Method (\_SB_.ABCD)" would get
12956 optimized to "Method (ABCD)" if the declaration is within the
12957 \_SB_ scope. This optimization is in addition to the named
12958 reference path optimization first released in the previous
12959 version. This would seem to complete all possible optimizations
12960 for namepaths within the ASL/AML.
12962 If the target of a Scope() operator already exists, it must be an
12963 object type that actually opens a scope -- such as a Device,
12964 Method, Scope, etc.
12966 Implemented a check and warning for unreachable code in the same
12967 block below a Return() statement.
12969 Fixed a problem where the listing file was not generated if the
12970 compiler aborted if the maximum error count was exceeded (200).
12972 Fixed a problem where the typechecking of method return values was
12973 broken. This includes the check for a return value when the
12974 method is invoked as a TermArg (a return value is expected.)
12976 Fixed a reported problem where EOF conditions during a quoted
12977 string or comment caused a fault.
12980 ----------------------------------------
12981 15 August 2002. Summary of changes for this release.
12983 1) ACPI CA Core Subsystem Version 20020815:
12985 Fixed a reported problem where a Store to a method argument that
12986 contains a reference did not perform the indirect store correctly.
12987 This problem was created during the conversion to the new
12988 reference object model - the indirect store to a method argument
12989 code was not updated to reflect the new model.
12991 Reworked the ACPI mode change code to better conform to ACPI 2.0,
12992 handle corner cases, and improve code legibility (Kochi Takayoshi)
12994 Fixed a problem with the pathname parsing for the carat (^)
12995 prefix. The heavy use of the carat operator by the new namepath
12996 optimization in the iASL compiler uncovered a problem with the AML
12997 interpreter handling of this prefix. In the case where one or
12998 more carats precede a single nameseg, the nameseg was treated as
12999 standalone and the search rule (to root) was inadvertently
13000 applied. This could cause both the iASL compiler and the
13001 interpreter to find the wrong object or to miss the error that
13002 should occur if the object does not exist at that exact pathname.
13004 Found and fixed the problem where the HP Pavilion DSDT would not
13005 load. This was a relatively minor tweak to the table loading code
13006 (a problem caused by the unexpected encounter with a method
13007 invocation not within a control method), but it does not solve the
13008 overall issue of the execution of AML code at the table level.
13009 This investigation is still ongoing.
13011 Code and Data Size: Current core subsystem library sizes are shown
13012 below. These are the code and data sizes for the acpica.lib
13013 produced by the Microsoft Visual C++ 6.0 compiler, and these
13014 values do not include any ACPI driver or OSPM code. The debug
13015 version of the code includes the debug output trace mechanism and
13016 has a larger code and data size. Note that these values will vary
13017 depending on the efficiency of the compiler and the compiler
13018 options used during generation.
13021 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
13022 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
13024 Non-Debug Version: 69.6K Code, 8.3K Data, 77.9K Total
13025 Debug Version: 150.0K Code, 61.7K Data, 211.7K Total
13030 Remove redundant slab.h include (Brad Hards)
13032 Fix several bugs in thermal.c (Herbert Nachtnebel)
13034 Make CONFIG_ACPI_BOOT work properly (Pavel Machek)
13036 Change acpi_system_suspend to use updated irq functions (Pavel
13039 Export acpi_get_firmware_table (Matthew Wilcox)
13041 Use proper root proc entry for ACPI (Kochi Takayoshi)
13043 Fix early-boot table parsing (Bjorn Helgaas)
13046 3) iASL Compiler/Disassembler
13048 Reworked the compiler options to make them more consistent and to
13049 use two-letter options where appropriate. We were running out of
13050 sensible letters. This may break some makefiles, so check the
13051 current options list by invoking the compiler with no parameters.
13053 Completed the design and implementation of the ASL namepath
13054 optimization option for the compiler. This option optimizes all
13055 references to named objects to the shortest possible path. The
13056 first attempt tries to utilize a single nameseg (4 characters) and
13057 the "search-to-root" algorithm used by the interpreter. If that
13058 cannot be used (because either the name is not in the search path
13059 or there is a conflict with another object with the same name),
13060 the pathname is optimized using the carat prefix (usually a
13061 shorter string than specifying the entire path from the root.)
13063 Implemented support to obtain the DSDT from the Windows registry
13064 (when the disassembly option is specified with no input file).
13065 Added this code as the implementation for AcpiOsTableOverride in
13066 the Windows OSL. Migrated the 16-bit code (used in the AcpiDump
13067 utility) to scan memory for the DSDT to the AcpiOsTableOverride
13068 function in the DOS OSL to make the disassembler truly OS
13071 Implemented a new option to disassemble and compile in one step.
13072 When used without an input filename, this option will grab the
13073 DSDT from the local machine, disassemble it, and compile it in one
13076 Added a warning message for invalid escapes (a backslash followed
13077 by any character other than the allowable escapes). This catches
13078 the quoted string error "\_SB_" (which should be "\\_SB_" ).
13080 Also, there are numerous instances in the ACPI specification where
13083 Added a compiler option to disable all optimizations. This is
13084 basically the "compatibility mode" because by using this option,
13085 the AML code will come out exactly the same as other ASL
13088 Added error messages for incorrectly ordered dependent resource
13089 functions. This includes: missing EndDependentFn macro at end of
13090 dependent resource list, nested dependent function macros (both
13091 start and end), and missing StartDependentFn macro. These are
13092 common errors that should be caught at compile time.
13094 Implemented _OSI support for the disassembler and compiler. _OSI
13095 must be included in the namespace for proper disassembly (because
13096 the disassembler must know the number of arguments.)
13098 Added an "optimization" message type that is optional (off by
13099 default). This message is used for all optimizations - including
13100 constant folding, integer optimization, and namepath optimization.
13102 ----------------------------------------
13103 25 July 2002. Summary of changes for this release.
13106 1) ACPI CA Core Subsystem Version 20020725:
13108 The AML Disassembler has been enhanced to produce compilable ASL
13109 code and has been integrated into the iASL compiler (see below) as
13110 well as the single-step disassembly for the AML debugger and the
13111 disassembler for the AcpiDump utility. All ACPI 2.0A opcodes,
13112 resource templates and macros are fully supported. The
13113 disassembler has been tested on over 30 different AML files,
13114 producing identical AML when the resulting disassembled ASL file
13115 is recompiled with the same ASL compiler.
13117 Modified the Resource Manager to allow zero interrupts and zero
13118 dma channels during the GetCurrentResources call. This was
13119 causing problems on some platforms.
13121 Added the AcpiOsRedirectOutput interface to the OSL to simplify
13122 output redirection for the AcpiOsPrintf and AcpiOsVprintf
13125 Code and Data Size: Current core subsystem library sizes are shown
13126 below. These are the code and data sizes for the acpica.lib
13127 produced by the Microsoft Visual C++ 6.0 compiler, and these
13128 values do not include any ACPI driver or OSPM code. The debug
13129 version of the code includes the debug output trace mechanism and
13130 has a larger code and data size. Note that these values will vary
13131 depending on the efficiency of the compiler and the compiler
13132 options used during generation.
13135 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
13136 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
13138 Non-Debug Version: 69.1K Code, 8.2K Data, 77.3K Total
13139 Debug Version: 149.4K Code, 61.6K Data, 211.0K Total
13144 Fixed a panic in the EC driver (Dominik Brodowski)
13146 Implemented checksum of the R/XSDT itself during Linux table scan
13152 The AML disassembler is integrated into the compiler. The "-d"
13153 option invokes the disassembler to completely disassemble an
13154 input AML file, producing as output a text ASL file with the
13155 extension ".dsl" (to avoid name collisions with existing .asl
13156 source files.) A future enhancement will allow the disassembler
13157 to obtain the BIOS DSDT from the registry under Windows.
13159 Fixed a problem with the VendorShort and VendorLong resource
13160 descriptors where an invalid AML sequence was created.
13162 Implemented a fix for BufferData term in the ASL parser. It was
13163 inadvertently defined twice, allowing invalid syntax to pass and
13164 causing reduction conflicts.
13166 Fixed a problem where the Ones opcode could get converted to a
13167 value of zero if "Ones" was used where a byte, word or dword value
13168 was expected. The 64-bit value is now truncated to the correct
13169 size with the correct value.
13173 ----------------------------------------
13174 02 July 2002. Summary of changes for this release.
13177 1) ACPI CA Core Subsystem Version 20020702:
13179 The Table Manager code has been restructured to add several new
13180 features. Tables that are not required by the core subsystem
13181 (other than the FADT, DSDT, FACS, PSDTs, etc.) are no longer
13182 validated in any way and are returned from AcpiGetFirmwareTable if
13183 requested. The AcpiOsTableOverride interface is now called for
13184 each table that is loaded by the subsystem in order to allow the
13185 host to override any table it chooses. Previously, only the DSDT
13186 could be overridden. Added one new files, tbrsdt.c and
13189 Fixed a problem with the conversion of internal package objects to
13190 external objects (when a package is returned from a control
13191 method.) The return buffer length was set to zero instead of the
13192 proper length of the package object.
13194 Fixed a reported problem with the use of the RefOf and DeRefOf
13195 operators when passing reference arguments to control methods. A
13196 new type of Reference object is used internally for references
13197 produced by the RefOf operator.
13199 Added additional error messages in the Resource Manager to explain
13200 AE_BAD_DATA errors when they occur during resource parsing.
13202 Split the AcpiEnableSubsystem into two primitives to enable a
13203 finer granularity initialization sequence. These two calls should
13204 be called in this order: AcpiEnableSubsystem (flags),
13205 AcpiInitializeObjects (flags). The flags parameter remains the
13211 Updated the ACPI utilities module to understand the new style of
13212 fully resolved package objects that are now returned from the core
13213 subsystem. This eliminates errors of the form:
13215 ACPI: PCI Interrupt Routing Table [\_SB_.PCI0.PPB_._PRT]
13216 acpi_utils-0430 [145] acpi_evaluate_reference:
13217 Invalid element in package (not a device reference)
13219 The method evaluation utility uses the new buffer allocation
13220 scheme instead of calling AcpiEvaluate Object twice.
13222 Added support for ECDT. This allows the use of the Embedded
13224 Controller before the namespace has been fully initialized, which
13225 is necessary for ACPI 2.0 support, and for some laptops to
13226 initialize properly. (Laptops using ECDT are still rare, so only
13227 limited testing was performed of the added functionality.)
13229 Fixed memory leaks in the EC driver.
13231 Eliminated a brittle code structure in acpi_bus_init().
13233 Eliminated the acpi_evaluate() helper function in utils.c. It is
13234 no longer needed since acpi_evaluate_object can optionally
13235 allocate memory for the return object.
13237 Implemented fix for keyboard hang when getting battery readings on
13238 some systems (Stephen White)
13240 PCI IRQ routing update (Dominik Brodowski)
13242 Fix an ifdef to allow compilation on UP with LAPIC but no IOAPIC
13245 ----------------------------------------
13246 11 June 2002. Summary of changes for this release.
13249 1) ACPI CA Core Subsystem Version 20020611:
13251 Fixed a reported problem where constants such as Zero and One
13252 appearing within _PRT packages were not handled correctly within
13253 the resource manager code. Originally reported against the ASL
13254 compiler because the code generator now optimizes integers to
13255 their minimal AML representation (i.e. AML constants if possible.)
13256 The _PRT code now handles all AML constant opcodes correctly
13257 (Zero, One, Ones, Revision).
13259 Fixed a problem with the Concatenate operator in the AML
13260 interpreter where a buffer result object was incorrectly marked as
13261 not fully evaluated, causing a run-time error of AE_AML_INTERNAL.
13263 All package sub-objects are now fully resolved before they are
13264 returned from the external ACPI interfaces. This means that name
13265 strings are resolved to object handles, and constant operators
13266 (Zero, One, Ones, Revision) are resolved to Integers.
13268 Implemented immediate resolution of the AML Constant opcodes
13269 (Zero, One, Ones, Revision) to Integer objects upon detection
13270 within the AML stream. This has simplified and reduced the
13271 generated code size of the subsystem by eliminating about 10
13272 switch statements for these constants (which previously were
13273 contained in Reference objects.) The complicating issues are that
13274 the Zero opcode is used as a "placeholder" for unspecified
13275 optional target operands and stores to constants are defined to be
13278 Code and Data Size: Current core subsystem library sizes are shown
13279 below. These are the code and data sizes for the acpica.lib
13280 produced by the Microsoft Visual C++ 6.0 compiler, and these
13281 values do not include any ACPI driver or OSPM code. The debug
13282 version of the code includes the debug output trace mechanism and
13283 has a larger code and data size. Note that these values will vary
13284 depending on the efficiency of the compiler and the compiler
13285 options used during generation.
13288 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
13289 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
13291 Non-Debug Version: 68.7K Code, 7.4K Data, 76.1K Total
13292 Debug Version: 142.9K Code, 58.7K Data, 201.6K Total
13298 Added preliminary support for obtaining _TRA data for PCI root
13299 bridges (Bjorn Helgaas).
13302 3) iASL Compiler Version X2046:
13304 Fixed a problem where the "_DDN" reserved name was defined to be a
13305 control method with one argument. There are no arguments, and
13306 _DDN does not have to be a control method.
13308 Fixed a problem with the Linux version of the compiler where the
13309 source lines printed with error messages were the wrong lines.
13310 This turned out to be the "LF versus CR/LF" difference between
13311 Windows and Unix. This appears to be the longstanding issue
13312 concerning listing output and error messages.
13314 Fixed a problem with the Linux version of compiler where opcode
13315 names within error messages were wrong. This was caused by a
13316 slight difference in the output of the Flex tool on Linux versus
13319 Fixed a problem with the Linux compiler where the hex output files
13320 contained some garbage data caused by an internal buffer overrun.
13323 ----------------------------------------
13324 17 May 2002. Summary of changes for this release.
13327 1) ACPI CA Core Subsystem Version 20020517:
13329 Implemented a workaround to an BIOS bug discovered on the HP
13330 OmniBook where the FADT revision number and the table size are
13331 inconsistent (ACPI 2.0 revision vs. ACPI 1.0 table size). The new
13332 behavior is to fallback to using only the ACPI 1.0 fields of the
13333 FADT if the table is too small to be a ACPI 2.0 table as claimed
13334 by the revision number. Although this is a BIOS bug, this is a
13335 case where the workaround is simple enough and with no side
13336 effects, so it seemed prudent to add it. A warning message is
13339 Implemented minimum size checks for the fixed-length ACPI tables -
13340 - the FADT and FACS, as well as consistency checks between the
13341 revision number and the table size.
13343 Fixed a reported problem in the table override support where the
13344 new table pointer was incorrectly treated as a physical address
13345 instead of a logical address.
13347 Eliminated the use of the AE_AML_ERROR exception and replaced it
13348 with more descriptive codes.
13350 Fixed a problem where an exception would occur if an ASL Field was
13351 defined with no named Field Units underneath it (used by some
13354 Code and Data Size: Current core subsystem library sizes are shown
13355 below. These are the code and data sizes for the acpica.lib
13356 produced by the Microsoft Visual C++ 6.0 compiler, and these
13357 values do not include any ACPI driver or OSPM code. The debug
13358 version of the code includes the debug output trace mechanism and
13359 has a larger code and data size. Note that these values will vary
13360 depending on the efficiency of the compiler and the compiler
13361 options used during generation.
13364 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
13365 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
13367 Non-Debug Version: 69.3K Code, 7.4K Data, 76.7K Total
13368 Debug Version: 143.8K Code, 58.8K Data, 202.6K Total
13374 Much work done on ACPI init (MADT and PCI IRQ routing support).
13375 (Paul D. and Dominik Brodowski)
13377 Fix PCI IRQ-related panic on boot (Sam Revitch)
13379 Set BM_ARB_DIS when entering a sleep state (Ducrot Bruno)
13381 Fix "MHz" typo (Dominik Brodowski)
13383 Fix RTC year 2000 issue (Dominik Brodowski)
13385 Preclude multiple button proc entries (Eric Brunet)
13387 Moved arch-specific code out of include/platform/aclinux.h
13389 3) iASL Compiler Version X2044:
13391 Implemented error checking for the string used in the EISAID macro
13392 (Usually used in the definition of the _HID object.) The code now
13393 strictly enforces the PnP format - exactly 7 characters, 3
13394 uppercase letters and 4 hex digits.
13396 If a raw string is used in the definition of the _HID object
13397 (instead of the EISAID macro), the string must contain all
13398 alphanumeric characters (e.g., "*PNP0011" is not allowed because
13401 Implemented checking for invalid use of ACPI reserved names for
13402 most of the name creation operators (Name, Device, Event, Mutex,
13403 OperationRegion, PowerResource, Processor, and ThermalZone.)
13404 Previously, this check was only performed for control methods.
13406 Implemented an additional check on the Name operator to emit an
13407 error if a reserved name that must be implemented in ASL as a
13408 control method is used. We know that a reserved name must be a
13409 method if it is defined with input arguments.
13411 The warning emitted when a namespace object reference is not found
13412 during the cross reference phase has been changed into an error.
13413 The "External" directive should be used for names defined in other
13417 4) Tools and Utilities
13419 The 16-bit tools (adump16 and aexec16) have been regenerated and
13422 Fixed a problem with the output of both acpidump and adump16 where
13423 the indentation of closing parentheses and brackets was not
13425 aligned properly with the parent block.
13428 ----------------------------------------
13429 03 May 2002. Summary of changes for this release.
13432 1) ACPI CA Core Subsystem Version 20020503:
13434 Added support a new OSL interface that allows the host operating
13436 system software to override the DSDT found in the firmware -
13437 AcpiOsTableOverride. With this interface, the OSL can examine the
13438 version of the firmware DSDT and replace it with a different one
13441 Added new external interfaces for accessing ACPI registers from
13442 device drivers and other system software - AcpiGetRegister and
13443 AcpiSetRegister. This was simply an externalization of the
13444 existing AcpiHwBitRegister interfaces.
13446 Fixed a regression introduced in the previous build where the
13447 ASL/AML CreateField operator always returned an error,
13448 "destination must be a NS Node".
13450 Extended the maximum time (before failure) to successfully enable
13451 ACPI mode to 3 seconds.
13453 Code and Data Size: Current core subsystem library sizes are shown
13454 below. These are the code and data sizes for the acpica.lib
13455 produced by the Microsoft Visual C++ 6.0 compiler, and these
13456 values do not include any ACPI driver or OSPM code. The debug
13457 version of the code includes the debug output trace mechanism and
13458 has a larger code and data size. Note that these values will vary
13459 depending on the efficiency of the compiler and the compiler
13460 options used during generation.
13463 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
13464 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
13466 Non-Debug Version: 68.8K Code, 7.1K Data, 75.9K Total
13467 Debug Version: 142.9K Code, 58.4K Data, 201.3K Total
13472 Enhanced ACPI init code for SMP. We are now fully MPS and $PIR-
13473 free. While 3 out of 4 of our in-house systems work fine, the last
13474 one still hangs when testing the LAPIC timer.
13476 Renamed many files in 2.5 kernel release to omit "acpi_" from the
13479 Added warning on boot for Presario 711FR.
13481 Sleep improvements (Pavel Machek)
13483 ACPI can now be built without CONFIG_PCI enabled.
13485 IA64: Fixed memory map functions (JI Lee)
13488 3) iASL Compiler Version X2043:
13490 Added support to allow the compiler to be integrated into the MS
13491 VC++ development environment for one-button compilation of single
13492 files or entire projects -- with error-to-source-line mapping.
13494 Implemented support for compile-time constant folding for the
13495 Type3, Type4, and Type5 opcodes first defined in the ACPI 2.0
13496 specification. This allows the ASL writer to use expressions
13497 instead of Integer/Buffer/String constants in terms that must
13498 evaluate to constants at compile time and will also simplify the
13499 emitted AML in any such sub-expressions that can be folded
13500 (evaluated at compile-time.) This increases the size of the
13501 compiler significantly because a portion of the ACPI CA AML
13502 interpreter is included within the compiler in order to pre-
13503 evaluate constant expressions.
13506 Fixed a problem with the "Unicode" ASL macro that caused the
13507 compiler to fault. (This macro is used in conjunction with the
13508 _STR reserved name.)
13510 Implemented an AML opcode optimization to use the Zero, One, and
13511 Ones opcodes where possible to further reduce the size of integer
13512 constants and thus reduce the overall size of the generated AML
13515 Implemented error checking for new reserved terms for ACPI version
13518 Implemented the -qr option to display the current list of ACPI
13519 reserved names known to the compiler.
13521 Implemented the -qc option to display the current list of ASL
13522 operators that are allowed within constant expressions and can
13523 therefore be folded at compile time if the operands are constants.
13528 Updated the Programmer's Reference for new interfaces, data types,
13529 and memory allocation model options.
13531 Updated the iASL Compiler User Reference to apply new format and
13532 add information about new features and options.
13534 ----------------------------------------
13535 19 April 2002. Summary of changes for this release.
13537 1) ACPI CA Core Subsystem Version 20020419:
13539 The source code base for the Core Subsystem has been completely
13540 cleaned with PC-lint (FlexLint) for both 32-bit and 64-bit
13541 versions. The Lint option files used are included in the
13542 /acpi/generate/lint directory.
13544 Implemented enhanced status/error checking across the entire
13545 Hardware manager subsystem. Any hardware errors (reported from
13546 the OSL) are now bubbled up and will abort a running control
13550 Fixed a problem where the per-ACPI-table integer width (32 or 64)
13551 was stored only with control method nodes, causing a fault when
13552 non-control method code was executed during table loading. The
13553 solution implemented uses a global variable to indicate table
13554 width across the entire ACPI subsystem. Therefore, ACPI CA does
13555 not support mixed integer widths across different ACPI tables
13558 Fixed a problem where NULL extended fields (X fields) in an ACPI
13559 2.0 ACPI FADT caused the table load to fail. Although the
13560 existing ACPI specification is a bit fuzzy on this topic, the new
13561 behavior is to fall back on a ACPI 1.0 field if the corresponding
13562 ACPI 2.0 X field is zero (even though the table revision indicates
13563 a full ACPI 2.0 table.) The ACPI specification will be updated to
13564 clarify this issue.
13566 Fixed a problem with the SystemMemory operation region handler
13567 where memory was always accessed byte-wise even if the AML-
13568 specified access width was larger than a byte. This caused
13569 problems on systems with memory-mapped I/O. Memory is now
13570 accessed with the width specified. On systems that do not support
13571 non-aligned transfers, a check is made to guarantee proper address
13572 alignment before proceeding in order to avoid an AML-caused
13573 alignment fault within the kernel.
13576 Fixed a problem with the ExtendedIrq resource where only one byte
13577 of the 4-byte Irq field was extracted.
13579 Fixed the AcpiExDigitsNeeded() procedure to support _UID. This
13580 function was out of date and required a rewrite.
13582 Code and Data Size: Current core subsystem library sizes are shown
13583 below. These are the code and data sizes for the acpica.lib
13584 produced by the Microsoft Visual C++ 6.0 compiler, and these
13585 values do not include any ACPI driver or OSPM code. The debug
13586 version of the code includes the debug output trace mechanism and
13587 has a larger code and data size. Note that these values will vary
13588 depending on the efficiency of the compiler and the compiler
13589 options used during generation.
13592 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
13593 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
13595 Non-Debug Version: 68.5K Code, 7.0K Data, 75.5K Total
13596 Debug Version: 142.4K Code, 58.3K Data, 200.7K Total
13601 PCI IRQ routing fixes (Dominik Brodowski)
13604 3) iASL Compiler Version X2042:
13606 Implemented an additional compile-time error check for a field
13607 unit whose size + minimum access width would cause a run-time
13608 access beyond the end-of-region. Previously, only the field size
13609 itself was checked.
13611 The Core subsystem and iASL compiler now share a common parse
13612 object in preparation for compile-time evaluation of the type
13613 3/4/5 ASL operators.
13616 ----------------------------------------
13617 Summary of changes for this release: 03_29_02
13619 1) ACPI CA Core Subsystem Version 20020329:
13621 Implemented support for late evaluation of TermArg operands to
13622 Buffer and Package objects. This allows complex expressions to be
13623 used in the declarations of these object types.
13625 Fixed an ACPI 1.0 compatibility issue when reading Fields. In ACPI
13626 1.0, if the field was larger than 32 bits, it was returned as a
13627 buffer - otherwise it was returned as an integer. In ACPI 2.0,
13628 the field is returned as a buffer only if the field is larger than
13629 64 bits. The TableRevision is now considered when making this
13630 conversion to avoid incompatibility with existing ASL code.
13632 Implemented logical addressing for AcpiOsGetRootPointer. This
13633 allows an RSDP with either a logical or physical address. With
13634 this support, the host OS can now override all ACPI tables with
13635 one logical RSDP. Includes implementation of "typed" pointer
13636 support to allow a common data type for both physical and logical
13637 pointers internally. This required a change to the
13638 AcpiOsGetRootPointer interface.
13640 Implemented the use of ACPI 2.0 Generic Address Structures for all
13641 GPE, Fixed Event, and PM Timer I/O. This allows the use of memory
13642 mapped I/O for these ACPI features.
13644 Initialization now ignores not only non-required tables (All
13645 tables other than the FADT, FACS, DSDT, and SSDTs), but also does
13646 not validate the table headers of unrecognized tables.
13648 Fixed a problem where a notify handler could only be
13649 installed/removed on an object of type Device. All "notify"
13651 objects are now supported -- Devices, Processor, Power, and
13654 Removed most verbosity from the ACPI_DB_INFO debug level. Only
13655 critical information is returned when this debug level is enabled.
13657 Code and Data Size: Current core subsystem library sizes are shown
13658 below. These are the code and data sizes for the acpica.lib
13659 produced by the Microsoft Visual C++ 6.0 compiler, and these
13660 values do not include any ACPI driver or OSPM code. The debug
13661 version of the code includes the debug output trace mechanism and
13662 has a larger code and data size. Note that these values will vary
13663 depending on the efficiency of the compiler and the compiler
13664 options used during generation.
13667 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
13668 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
13670 Non-Debug Version: 66.6K Code, 6.5K Data, 73.1K Total
13671 Debug Version: 139.8K Code, 57.4K Data, 197.2K Total
13676 The processor driver (acpi_processor.c) now fully supports ACPI
13677 2.0-based processor performance control (e.g. Intel(R)
13678 SpeedStep(TM) technology) Note that older laptops that only have
13679 the Intel "applet" interface are not supported through this. The
13680 'limit' and 'performance' interface (/proc) are fully functional.
13681 [Note that basic policy for controlling performance state
13682 transitions will be included in the next version of ospmd.] The
13683 idle handler was modified to more aggressively use C2, and PIIX4
13684 errata handling underwent a complete overhaul (big thanks to
13685 Dominik Brodowski).
13687 Added support for ACPI-PCI device binding (acpi_pci_root.c). _ADR-
13688 based devices in the ACPI namespace are now dynamically bound
13689 (associated) with their PCI counterparts (e.g. PCI1->01:00.0).
13690 This allows, among other things, ACPI to resolve bus numbers for
13691 subordinate PCI bridges.
13693 Enhanced PCI IRQ routing to get the proper bus number for _PRT
13694 entries defined underneath PCI bridges.
13696 Added IBM 600E to bad bios list due to invalid _ADR value for
13697 PIIX4 PCI-ISA bridge, resulting in improper PCI IRQ routing.
13699 In the process of adding full MADT support (e.g. IOAPIC) for IA32
13700 (acpi.c, mpparse.c) -- stay tuned.
13702 Added back visual differentiation between fixed-feature and
13703 control-method buttons in dmesg. Buttons are also subtyped (e.g.
13704 button/power/PWRF) to simplify button identification.
13706 We no longer use -Wno-unused when compiling debug. Please ignore
13707 any "_THIS_MODULE defined but not used" messages.
13709 Can now shut down the system using "magic sysrq" key.
13712 3) iASL Compiler version 2041:
13714 Fixed a problem where conversion errors for hex/octal/decimal
13715 constants were not reported.
13717 Implemented a fix for the General Register template Address field.
13718 This field was 8 bits when it should be 64.
13720 Fixed a problem where errors/warnings were no longer being emitted
13721 within the listing output file.
13723 Implemented the ACPI 2.0A restriction on ACPI Table Signatures to
13724 exactly 4 characters, alphanumeric only.
13729 ----------------------------------------
13730 Summary of changes for this release: 03_08_02
13733 1) ACPI CA Core Subsystem Version 20020308:
13735 Fixed a problem with AML Fields where the use of the "AccessAny"
13736 keyword could cause an interpreter error due to attempting to read
13737 or write beyond the end of the parent Operation Region.
13739 Fixed a problem in the SystemMemory Operation Region handler where
13740 an attempt was made to map memory beyond the end of the region.
13741 This was the root cause of the "AE_ERROR" and "AE_NO_MEMORY"
13742 errors on some Linux systems.
13744 Fixed a problem where the interpreter/namespace "search to root"
13745 algorithm was not functioning for some object types. Relaxed the
13746 internal restriction on the search to allow upsearches for all
13747 external object types as well as most internal types.
13752 We now use safe_halt() macro versus individual calls to sti | hlt.
13754 Writing to the processor limit interface should now work. "echo 1"
13755 will increase the limit, 2 will decrease, and 0 will reset to the
13762 Fixed segfault on Linux version.
13765 ----------------------------------------
13766 Summary of changes for this release: 02_25_02
13768 1) ACPI CA Core Subsystem:
13771 Fixed a problem where the GPE bit masks were not initialized
13772 properly, causing erratic GPE behavior.
13774 Implemented limited support for multiple calling conventions. The
13775 code can be generated with either the VPL (variable parameter
13776 list, or "C") convention, or the FPL (fixed parameter list, or
13777 "Pascal") convention. The core subsystem is about 3.4% smaller
13778 when generated with FPL.
13783 Re-add some /proc/acpi/event functionality that was lost during
13786 Resolved issue with /proc events for fixed-feature buttons showing
13787 up as the system device.
13789 Fixed checks on C2/C3 latencies to be inclusive of maximum values.
13791 Replaced AE_ERRORs in acpi_osl.c with more specific error codes.
13793 Changed ACPI PRT option from "pci=noacpi-routing" to "pci=noacpi"
13795 Fixed limit interface & usage to fix bugs with passive cooling
13798 Restructured PRT support.
13801 ----------------------------------------
13802 Summary of changes for this label: 02_14_02
13805 1) ACPI CA Core Subsystem:
13807 Implemented support in AcpiLoadTable to allow loading of FACS and
13810 Suport for the now-obsolete interim 0.71 64-bit ACPI tables has
13811 been removed. All 64-bit platforms should be migrated to the ACPI
13812 2.0 tables. The actbl71.h header has been removed from the source
13815 All C macros defined within the subsystem have been prefixed with
13816 "ACPI_" to avoid collision with other system include files.
13818 Removed the return value for the two AcpiOsPrint interfaces, since
13819 it is never used and causes lint warnings for ignoring the return
13822 Added error checking to all internal mutex acquire and release
13823 calls. Although a failure from one of these interfaces is
13824 probably a fatal system error, these checks will cause the
13825 immediate abort of the currently executing method or interface.
13827 Fixed a problem where the AcpiSetCurrentResources interface could
13828 fault. This was a side effect of the deployment of the new memory
13831 Fixed a couple of problems with the Global Lock support introduced
13832 in the last major build. The "common" (1.0/2.0) internal FACS was
13833 being overwritten with the FACS signature and clobbering the
13834 Global Lock pointer. Also, the actual firmware FACS was being
13835 unmapped after construction of the "common" FACS, preventing
13836 access to the actual Global Lock field within it. The "common"
13837 internal FACS is no longer installed as an actual ACPI table; it
13838 is used simply as a global.
13840 Code and Data Size: Current core subsystem library sizes are shown
13841 below. These are the code and data sizes for the acpica.lib
13842 produced by the Microsoft Visual C++ 6.0 compiler, and these
13843 values do not include any ACPI driver or OSPM code. The debug
13844 version of the code includes the debug output trace mechanism and
13845 has a larger code and data size. Note that these values will vary
13846 depending on the efficiency of the compiler and the compiler
13847 options used during generation.
13849 Previous Release (02_07_01)
13850 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
13851 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
13853 Non-Debug Version: 65.4K Code, 6.2K Data, 71.6K Total
13854 Debug Version: 138.0K Code, 56.6K Data, 194.6K Total
13859 Updated Linux-specific code for core macro and OSL interface
13860 changes described above.
13862 Improved /proc/acpi/event. It now can be opened only once and has
13863 proper poll functionality.
13865 Fixed and restructured power management (acpi_bus).
13867 Only create /proc "view by type" when devices of that class exist.
13869 Fixed "charging/discharging" bug (and others) in acpi_battery.
13871 Improved thermal zone code.
13874 3) ASL Compiler, version X2039:
13877 Implemented the new compiler restriction on ASL String hex/octal
13878 escapes to non-null, ASCII values. An error results if an invalid
13879 value is used. (This will require an ACPI 2.0 specification
13882 AML object labels that are output to the optional C and ASM source
13883 are now prefixed with both the ACPI table signature and table ID
13884 to help guarantee uniqueness within a large BIOS project.
13887 ----------------------------------------
13888 Summary of changes for this label: 02_01_02
13890 1) ACPI CA Core Subsystem:
13892 ACPI 2.0 support is complete in the entire Core Subsystem and the
13893 ASL compiler. All new ACPI 2.0 operators are implemented and all
13894 other changes for ACPI 2.0 support are complete. With
13895 simultaneous code and data optimizations throughout the subsystem,
13896 ACPI 2.0 support has been implemented with almost no additional
13897 cost in terms of code and data size.
13899 Implemented a new mechanism for allocation of return buffers. If
13900 the buffer length is set to ACPI_ALLOCATE_BUFFER, the buffer will
13901 be allocated on behalf of the caller. Consolidated all return
13902 buffer validation and allocation to a common procedure. Return
13903 buffers will be allocated via the primary OSL allocation interface
13904 since it appears that a separate pool is not needed by most users.
13905 If a separate pool is required for these buffers, the caller can
13906 still use the original mechanism and pre-allocate the buffer(s).
13908 Implemented support for string operands within the DerefOf
13911 Restructured the Hardware and Event managers to be table driven,
13912 simplifying the source code and reducing the amount of generated
13915 Split the common read/write low-level ACPI register bitfield
13916 procedure into a separate read and write, simplifying the code
13919 Obsoleted the AcpiOsCallocate OSL interface. This interface was
13920 used only a handful of times and didn't have enough critical mass
13921 for a separate interface. Replaced with a common calloc procedure
13924 Fixed a reported problem with the GPE number mapping mechanism
13925 that allows GPE1 numbers to be non-contiguous with GPE0.
13926 Reorganized the GPE information and shrunk a large array that was
13927 originally large enough to hold info for all possible GPEs (256)
13928 to simply large enough to hold all GPEs up to the largest GPE
13929 number on the machine.
13931 Fixed a reported problem with resource structure alignment on 64-
13934 Changed the AcpiEnableEvent and AcpiDisableEvent external
13935 interfaces to not require any flags for the common case of
13936 enabling/disabling a GPE.
13938 Implemented support to allow a "Notify" on a Processor object.
13940 Most TBDs in comments within the source code have been resolved
13944 Fixed a problem in the interpreter where a standalone parent
13945 prefix (^) was not handled correctly in the interpreter and
13948 Removed obsolete and unnecessary GPE save/restore code.
13950 Implemented Field support in the ASL Load operator. This allows a
13951 table to be loaded from a named field, in addition to loading a
13952 table directly from an Operation Region.
13954 Implemented timeout and handle support in the external Global Lock
13957 Fixed a problem in the AcpiDump utility where pathnames were no
13958 longer being generated correctly during the dump of named objects.
13960 Modified the AML debugger to give a full display of if/while
13961 predicates instead of just one AML opcode at a time. (The
13962 predicate can have several nested ASL statements.) The old method
13963 was confusing during single stepping.
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 (12_18_01)
13975 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
13976 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
13978 Non-Debug Version: 65.2K Code, 6.2K Data, 71.4K Total
13979 Debug Version: 136.9K Code, 56.4K Data, 193.3K Total
13983 Implemented fix for PIIX reverse throttling errata (Processor
13986 Added new Limit interface (Processor and Thermal drivers)
13988 New thermal policy (Thermal driver)
13990 Many updates to /proc
13992 Battery "low" event support (Battery driver)
13994 Supports ACPI PCI IRQ routing (PCI Link and PCI root drivers)
13996 IA32 - IA64 initialization unification, no longer experimental
13998 Menuconfig options redesigned
14000 3) ASL Compiler, version X2037:
14002 Implemented several new output features to simplify integration of
14003 AML code into firmware: 1) Output the AML in C source code with
14004 labels for each named ASL object. The original ASL source code
14005 is interleaved as C comments. 2) Output the AML in ASM source code
14006 with labels and interleaved ASL source. 3) Output the AML in
14007 raw hex table form, in either C or ASM.
14009 Implemented support for optional string parameters to the
14010 LoadTable operator.
14012 Completed support for embedded escape sequences within string
14013 literals. The compiler now supports all single character escapes
14014 as well as the Octal and Hex escapes. Note: the insertion of a
14015 null byte into a string literal (via the hex/octal escape) causes
14016 the string to be immediately terminated. A warning is issued.
14018 Fixed a problem where incorrect AML was generated for the case
14019 where an ASL namepath consists of a single parent prefix (
14021 ) with no trailing name segments.
14023 The compiler has been successfully generated with a 64-bit C
14029 ----------------------------------------
14030 Summary of changes for this label: 12_18_01
14034 Enhanced blacklist with reason and severity fields. Any table's
14035 signature may now be used to identify a blacklisted system.
14037 Call _PIC control method to inform the firmware which interrupt
14038 model the OS is using. Turn on any disabled link devices.
14040 Cleaned up busmgr /proc error handling (Andreas Dilger)
14042 2) ACPI CA Core Subsystem:
14044 Implemented ACPI 2.0 semantics for the "Break" operator (Exit from
14047 Completed implementation of the ACPI 2.0 "Continue",
14048 "ConcatenateResTemplate", "DataTableRegion", and "LoadTable"
14049 operators. All new ACPI 2.0 operators are now implemented in both
14050 the ASL compiler and the AML interpreter. The only remaining ACPI
14051 2.0 task is support for the String data type in the DerefOf
14052 operator. Fixed a problem with AcquireMutex where the status code
14053 was lost if the caller had to actually wait for the mutex.
14055 Increased the maximum ASL Field size from 64K bits to 4G bits.
14057 Completed implementation of the external Global Lock interfaces --
14058 AcpiAcquireGlobalLock and AcpiReleaseGlobalLock. The Timeout and
14059 Handler parameters were added.
14061 Completed another pass at removing warnings and issues when
14062 compiling with 64-bit compilers. The code now compiles cleanly
14063 with the Intel 64-bit C/C++ compiler. Most notably, the pointer
14064 add and subtract (diff) macros have changed considerably.
14067 Created and deployed a new ACPI_SIZE type that is 64-bits wide on
14068 64-bit platforms, 32-bits on all others. This type is used
14069 wherever memory allocation and/or the C sizeof() operator is used,
14070 and affects the OSL memory allocation interfaces AcpiOsAllocate
14071 and AcpiOsCallocate.
14073 Implemented sticky user breakpoints in the AML debugger.
14075 Code and Data Size: Current core subsystem library sizes are shown
14076 below. These are the code and data sizes for the acpica.lib
14077 produced by the Microsoft Visual C++ 6.0 compiler, and these
14078 values do not include any ACPI driver or OSPM code. The debug
14079 version of the code includes the debug output trace mechanism and
14080 has a larger code and data size. Note that these values will vary
14081 depending on the efficiency of the compiler and the compiler
14082 options used during generation.
14084 Previous Release (12_05_01)
14085 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
14086 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
14088 Non-Debug Version: 66.1K Code, 5.5K Data, 71.6K Total
14089 Debug Version: 138.3K Code, 55.9K Data, 194.2K Total
14091 3) ASL Compiler, version X2034:
14093 Now checks for (and generates an error if detected) the use of a
14094 Break or Continue statement without an enclosing While statement.
14097 Successfully generated the compiler with the Intel 64-bit C
14100 ----------------------------------------
14101 Summary of changes for this label: 12_05_01
14103 1) ACPI CA Core Subsystem:
14105 The ACPI 2.0 CopyObject operator is fully implemented. This
14106 operator creates a new copy of an object (and is also used to
14107 bypass the "implicit conversion" mechanism of the Store operator.)
14109 The ACPI 2.0 semantics for the SizeOf operator are fully
14110 implemented. The change is that performing a SizeOf on a
14111 reference object causes an automatic dereference of the object to
14112 tha actual value before the size is evaluated. This behavior was
14113 undefined in ACPI 1.0.
14115 The ACPI 2.0 semantics for the Extended IRQ resource descriptor
14116 have been implemented. The interrupt polarity and mode are now
14119 Fixed a problem where ASL Constants (Zero, One, Ones, Revision)
14120 appearing in Package objects were not properly converted to
14121 integers when the internal Package was converted to an external
14122 object (via the AcpiEvaluateObject interface.)
14124 Fixed a problem with the namespace object deletion mechanism for
14125 objects created by control methods. There were two parts to this
14126 problem: 1) Objects created during the initialization phase method
14127 parse were not being deleted, and 2) The object owner ID mechanism
14128 to track objects was broken.
14130 Fixed a problem where the use of the ASL Scope operator within a
14131 control method would result in an invalid opcode exception.
14133 Fixed a problem introduced in the previous label where the buffer
14134 length required for the _PRT structure was not being returned
14137 Code and Data Size: Current core subsystem library sizes are shown
14138 below. These are the code and data sizes for the acpica.lib
14139 produced by the Microsoft Visual C++ 6.0 compiler, and these
14140 values do not include any ACPI driver or OSPM code. The debug
14141 version of the code includes the debug output trace mechanism and
14142 has a larger code and data size. Note that these values will vary
14143 depending on the efficiency of the compiler and the compiler
14144 options used during generation.
14146 Previous Release (11_20_01)
14147 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
14148 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
14151 Non-Debug Version: 64.7K Code, 5.3K Data, 70.0K Total
14152 Debug Version: 136.2K Code, 55.6K Data, 191.8K Total
14156 Updated all files to apply cleanly against 2.4.16.
14158 Added basic PCI Interrupt Routing Table (PRT) support for IA32
14159 (acpi_pci.c), and unified the PRT code for IA32 and IA64. This
14160 version supports both static and dyanmic PRT entries, but dynamic
14161 entries are treated as if they were static (not yet
14162 reconfigurable). Architecture- specific code to use this data is
14163 absent on IA32 but should be available shortly.
14165 Changed the initialization sequence to start the ACPI interpreter
14166 (acpi_init) prior to initialization of the PCI driver (pci_init)
14167 in init/main.c. This ordering is required to support PRT and
14168 facilitate other (future) enhancement. A side effect is that the
14169 ACPI bus driver and certain device drivers can no longer be loaded
14172 Modified the 'make menuconfig' options to allow PCI Interrupt
14173 Routing support to be included without the ACPI Bus and other
14176 3) ASL Compiler, version X2033:
14178 Fixed some issues with the use of the new CopyObject and
14179 DataTableRegion operators. Both are fully functional.
14181 ----------------------------------------
14182 Summary of changes for this label: 11_20_01
14184 20 November 2001. Summary of changes for this release.
14186 1) ACPI CA Core Subsystem:
14188 Updated Index support to match ACPI 2.0 semantics. Storing a
14189 Integer, String, or Buffer to an Index of a Buffer will store only
14190 the least-significant byte of the source to the Indexed buffer
14191 byte. Multiple writes are not performed.
14193 Fixed a problem where the access type used in an AccessAs ASL
14194 operator was not recorded correctly into the field object.
14196 Fixed a problem where ASL Event objects were created in a
14197 signalled state. Events are now created in an unsignalled state.
14199 The internal object cache is now purged after table loading and
14200 initialization to reduce the use of dynamic kernel memory -- on
14201 the assumption that object use is greatest during the parse phase
14202 of the entire table (versus the run-time use of individual control
14205 ACPI 2.0 variable-length packages are now fully operational.
14207 Code and Data Size: Code and Data optimizations have permitted new
14208 feature development with an actual reduction in the library size.
14209 Current core subsystem library sizes are shown below. These are
14210 the code and data sizes for the acpica.lib produced by the
14211 Microsoft Visual C++ 6.0 compiler, and these values do not include
14212 any ACPI driver or OSPM code. The debug version of the code
14213 includes the debug output trace mechanism and has a larger code
14214 and data size. Note that these values will vary depending on the
14215 efficiency of the compiler and the compiler options used during
14218 Previous Release (11_09_01):
14219 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
14220 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
14223 Non-Debug Version: 64.1K Code, 5.3K Data, 69.4K Total
14224 Debug Version: 135.1K Code, 55.4K Data, 190.5K Total
14228 Enhanced the ACPI boot-time initialization code to allow the use
14229 of Local APIC tables for processor enumeration on IA-32, and to
14230 pave the way for a fully MPS-free boot (on SMP systems) in the
14231 near future. This functionality replaces
14232 arch/i386/kernel/acpitables.c, which was introduced in an earlier
14233 2.4.15-preX release. To enable this feature you must add
14234 "acpi_boot=on" to the kernel command line -- see the help entry
14235 for CONFIG_ACPI_BOOT for more information. An IA-64 release is in
14238 Restructured the configuration options to allow boot-time table
14239 parsing support without inclusion of the ACPI Interpreter (and
14242 NOTE: This release does not include fixes for the reported events,
14243 power-down, and thermal passive cooling issues (coming soon).
14247 Added additional typechecking for Fields within restricted access
14248 Operation Regions. All fields within EC and CMOS regions must be
14249 declared with ByteAcc. All fields withing SMBus regions must be
14250 declared with the BufferAcc access type.
14252 Fixed a problem where the listing file output of control methods
14253 no longer interleaved the actual AML code with the ASL source
14259 ----------------------------------------
14260 Summary of changes for this label: 11_09_01
14262 1) ACPI CA Core Subsystem:
14264 Implemented ACPI 2.0-defined support for writes to fields with a
14265 Buffer, String, or Integer source operand that is smaller than the
14266 target field. In these cases, the source operand is zero-extended
14267 to fill the target field.
14269 Fixed a problem where a Field starting bit offset (within the
14270 parent operation region) was calculated incorrectly if the
14272 alignment of the field differed from the access width. This
14273 affected CreateWordField, CreateDwordField, CreateQwordField, and
14274 possibly other fields that use the "AccessAny" keyword.
14276 Fixed a problem introduced in the 11_02_01 release where indirect
14277 stores through method arguments did not operate correctly.
14281 Implemented boot-time ACPI table parsing support
14282 (CONFIG_ACPI_BOOT) for IA32 and IA64 UP/SMP systems. This code
14283 facilitates the use of ACPI tables (e.g. MADT, SRAT) rather than
14284 legacy BIOS interfaces (e.g. MPS) for the configuration of system
14285 processors, memory, and interrupts during setup_arch(). Note that
14286 this patch does not include the required architecture-specific
14287 changes required to apply this information -- subsequent patches
14288 will be posted for both IA32 and IA64 to achieve this.
14290 Added low-level sleep support for IA32 platforms, courtesy of Pat
14291 Mochel. This allows IA32 systems to transition to/from various
14292 sleeping states (e.g. S1, S3), although the lack of a centralized
14293 driver model and power-manageable drivers will prevent its
14294 (successful) use on most systems.
14296 Revamped the ACPI 'menuconfig' layout: created new "ACPI Support"
14297 submenu, unified IA32 and IA64 options, added new "Boot using ACPI
14298 tables" option, etc.
14300 Increased the default timeout for the EC driver from 1ms to 10ms
14301 (1000 cycles of 10us) to try to address AE_TIME errors during EC
14304 ----------------------------------------
14305 Summary of changes for this label: 11_02_01
14307 1) ACPI CA Core Subsystem:
14309 ACPI 2.0 Support: Implemented ACPI 2.0 64-bit Field access
14310 (QWordAcc keyword). All ACPI 2.0 64-bit support is now
14313 OSL Interfaces: Several of the OSL (AcpiOs*) interfaces required
14314 changes to support ACPI 2.0 Qword field access. Read/Write
14315 PciConfiguration(), Read/Write Memory(), and Read/Write Port() now
14316 accept an ACPI_INTEGER (64 bits) as the value parameter. Also,
14317 the value parameter for the address space handler interface is now
14318 an ACPI_INTEGER. OSL implementations of these interfaces must now
14319 handle the case where the Width parameter is 64.
14321 Index Fields: Fixed a problem where unaligned bit assembly and
14322 disassembly for IndexFields was not supported correctly.
14324 Index and Bank Fields: Nested Index and Bank Fields are now
14325 supported. During field access, a check is performed to ensure
14326 that the value written to an Index or Bank register is not out of
14327 the range of the register. The Index (or Bank) register is
14328 written before each access to the field data. Future support will
14329 include allowing individual IndexFields to be wider than the
14330 DataRegister width.
14332 Fields: Fixed a problem where the AML interpreter was incorrectly
14333 attempting to write beyond the end of a Field/OpRegion. This was
14334 a boundary case that occurred when a DWORD field was written to a
14335 BYTE access OpRegion, forcing multiple writes and causing the
14336 interpreter to write one datum too many.
14338 Fields: Fixed a problem with Field/OpRegion access where the
14339 starting bit address of a field was incorrectly calculated if the
14340 current access type was wider than a byte (WordAcc, DwordAcc, or
14343 Fields: Fixed a problem where forward references to individual
14344 FieldUnits (individual Field names within a Field definition) were
14345 not resolved during the AML table load.
14347 Fields: Fixed a problem where forward references from a Field
14348 definition to the parent Operation Region definition were not
14349 resolved during the AML table load.
14351 Fields: Duplicate FieldUnit names within a scope are now detected
14352 during AML table load.
14354 Acpi Interfaces: Fixed a problem where the AcpiGetName() interface
14355 returned an incorrect name for the root node.
14357 Code and Data Size: Code and Data optimizations have permitted new
14358 feature development with an actual reduction in the library size.
14359 Current core subsystem library sizes are shown below. These are
14360 the code and data sizes for the acpica.lib produced by the
14361 Microsoft Visual C++ 6.0 compiler, and these values do not include
14362 any ACPI driver or OSPM code. The debug version of the code
14363 includes the debug output trace mechanism and has a larger code
14364 and data size. Note that these values will vary depending on the
14365 efficiency of the compiler and the compiler options used during
14368 Previous Release (10_18_01):
14369 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
14370 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
14373 Non-Debug Version: 63.7K Code, 5.2K Data, 68.9K Total
14374 Debug Version: 134.5K Code, 55.4K Data, 189.9K Total
14378 Improved /proc processor output (Pavel Machek) Re-added
14379 MODULE_LICENSE("GPL") to all modules.
14381 3) ASL Compiler version X2030:
14383 Duplicate FieldUnit names within a scope are now detected and
14388 Programmer Reference updated to reflect OSL and address space
14389 handler interface changes described above.
14391 ----------------------------------------
14392 Summary of changes for this label: 10_18_01
14394 ACPI CA Core Subsystem:
14396 Fixed a problem with the internal object reference count mechanism
14397 that occasionally caused premature object deletion. This resolves
14398 all of the outstanding problem reports where an object is deleted
14399 in the middle of an interpreter evaluation. Although this problem
14400 only showed up in rather obscure cases, the solution to the
14401 problem involved an adjustment of all reference counts involving
14402 objects attached to namespace nodes.
14404 Fixed a problem with Field support in the interpreter where
14405 writing to an aligned field whose length is an exact multiple (2
14406 or greater) of the field access granularity would cause an attempt
14407 to write beyond the end of the field.
14409 The top level AML opcode execution functions within the
14410 interpreter have been renamed with a more meaningful and
14411 consistent naming convention. The modules exmonad.c and
14412 exdyadic.c were eliminated. New modules are exoparg1.c,
14413 exoparg2.c, exoparg3.c, and exoparg6.c.
14415 Support for the ACPI 2.0 "Mid" ASL operator has been implemented.
14417 Fixed a problem where the AML debugger was causing some internal
14418 objects to not be deleted during subsystem termination.
14420 Fixed a problem with the external AcpiEvaluateObject interface
14421 where the subsystem would fault if the named object to be
14422 evaluated refered to a constant such as Zero, Ones, etc.
14424 Fixed a problem with IndexFields and BankFields where the
14425 subsystem would fault if the index, data, or bank registers were
14426 not defined in the same scope as the field itself.
14428 Added printf format string checking for compilers that support
14429 this feature. Corrected more than 50 instances of issues with
14430 format specifiers within invocations of ACPI_DEBUG_PRINT
14431 throughout the core subsystem code.
14433 The ASL "Revision" operator now returns the ACPI support level
14434 implemented in the core - the value "2" since the ACPI 2.0 support
14435 is more than 50% implemented.
14437 Enhanced the output of the AML debugger "dump namespace" command
14438 to output in a more human-readable form.
14440 Current core subsystem library code sizes are shown below. These
14442 are the code and data sizes for the acpica.lib produced by the
14443 Microsoft Visual C++ 6.0 compiler, and these values do not include
14444 any ACPI driver or OSPM code. The debug version of the code
14445 includes the full debug trace mechanism -- leading to a much
14447 larger code and data size. Note that these values will vary
14448 depending on the efficiency of the compiler and the compiler
14449 options used during generation.
14451 Previous Label (09_20_01):
14452 Non-Debug Version: 65K Code, 5K Data, 70K Total
14453 Debug Version: 138K Code, 58K Data, 196K Total
14457 Non-Debug Version: 63.9K Code, 5.1K Data, 69.0K Total
14458 Debug Version: 136.7K Code, 57.4K Data, 194.2K Total
14462 Implemented a "Bad BIOS Blacklist" to track machines that have
14463 known ASL/AML problems.
14465 Enhanced the /proc interface for the thermal zone driver and added
14466 support for _HOT (the critical suspend trip point). The 'info'
14467 file now includes threshold/policy information, and allows setting
14468 of _SCP (cooling preference) and _TZP (polling frequency) values
14469 to the 'info' file. Examples: "echo tzp=5 > info" sets the polling
14470 frequency to 5 seconds, and "echo scp=1 > info" sets the cooling
14471 preference to the passive/quiet mode (if supported by the ASL).
14473 Implemented a workaround for a gcc bug that resuted in an OOPs
14474 when loading the control method battery driver.
14476 ----------------------------------------
14477 Summary of changes for this label: 09_20_01
14479 ACPI CA Core Subsystem:
14481 The AcpiEnableEvent and AcpiDisableEvent interfaces have been
14482 modified to allow individual GPE levels to be flagged as wake-
14483 enabled (i.e., these GPEs are to remain enabled when the platform
14486 The AcpiEnterSleepState and AcpiLeaveSleepState interfaces now
14487 support wake-enabled GPEs. This means that upon entering the
14488 sleep state, all GPEs that are not wake-enabled are disabled.
14489 When leaving the sleep state, these GPEs are reenabled.
14491 A local double-precision divide/modulo module has been added to
14492 enhance portability to OS kernels where a 64-bit math library is
14493 not available. The new module is "utmath.c".
14495 Several optimizations have been made to reduce the use of CPU
14496 stack. Originally over 2K, the maximum stack usage is now below
14497 2K at 1860 bytes (1.82k)
14499 Fixed a problem with the AcpiGetFirmwareTable interface where the
14500 root table pointer was not mapped into a logical address properly.
14502 Fixed a problem where a NULL pointer was being dereferenced in the
14503 interpreter code for the ASL Notify operator.
14505 Fixed a problem where the use of the ASL Revision operator
14506 returned an error. This operator now returns the current version
14507 of the ACPI CA core subsystem.
14509 Fixed a problem where objects passed as control method parameters
14510 to AcpiEvaluateObject were always deleted at method termination.
14511 However, these objects may end up being stored into the namespace
14512 by the called method. The object reference count mechanism was
14513 applied to these objects instead of a force delete.
14515 Fixed a problem where static strings or buffers (contained in the
14516 AML code) that are declared as package elements within the ASL
14517 code could cause a fault because the interpreter would attempt to
14518 delete them. These objects are now marked with the "static
14519 object" flag to prevent any attempt to delete them.
14521 Implemented an interpreter optimization to use operands directly
14522 from the state object instead of extracting the operands to local
14523 variables. This reduces stack use and code size, and improves
14526 The module exxface.c was eliminated as it was an unnecessary extra
14529 Current core subsystem library code sizes are shown below. These
14530 are the code and data sizes for the acpica.lib produced by the
14531 Microsoft Visual C++ 6.0 compiler, and these values do not include
14532 any ACPI driver or OSPM code. The debug version of the code
14533 includes the full debug trace mechanism -- leading to a much
14534 larger code and data size. Note that these values will vary
14535 depending on the efficiency of the compiler and the compiler
14536 options used during generation.
14538 Non-Debug Version: 65K Code, 5K Data, 70K Total
14539 (Previously 69K) Debug Version: 138K Code, 58K Data, 196K
14540 Total (Previously 195K)
14544 Support for ACPI 2.0 64-bit integers has been added. All ACPI
14545 Integer objects are now 64 bits wide
14547 All Acpi data types and structures are now in lower case. Only
14548 Acpi macros are upper case for differentiation.
14552 Changes to the external interfaces as described above.
14554 ----------------------------------------
14555 Summary of changes for this label: 08_31_01
14557 ACPI CA Core Subsystem:
14559 A bug with interpreter implementation of the ASL Divide operator
14560 was found and fixed. The implicit function return value (not the
14561 explicit store operands) was returning the remainder instead of
14562 the quotient. This was a longstanding bug and it fixes several
14563 known outstanding issues on various platforms.
14565 The ACPI_DEBUG_PRINT and function trace entry/exit macros have
14566 been further optimized for size. There are 700 invocations of the
14567 DEBUG_PRINT macro alone, so each optimization reduces the size of
14568 the debug version of the subsystem significantly.
14570 A stack trace mechanism has been implemented. The maximum stack
14571 usage is about 2K on 32-bit platforms. The debugger command "stat
14572 stack" will display the current maximum stack usage.
14574 All public symbols and global variables within the subsystem are
14575 now prefixed with the string "Acpi". This keeps all of the
14576 symbols grouped together in a kernel map, and avoids conflicts
14577 with other kernel subsystems.
14579 Most of the internal fixed lookup tables have been moved into the
14580 code segment via the const operator.
14582 Several enhancements have been made to the interpreter to both
14583 reduce the code size and improve performance.
14585 Current core subsystem library code sizes are shown below. These
14586 are the code and data sizes for the acpica.lib produced by the
14587 Microsoft Visual C++ 6.0 compiler, and these values do not include
14588 any ACPI driver or OSPM code. The debug version of the code
14589 includes the full debug trace mechanism which contains over 700
14590 invocations of the DEBUG_PRINT macro, 500 function entry macro
14591 invocations, and over 900 function exit macro invocations --
14592 leading to a much larger code and data size. Note that these
14593 values will vary depending on the efficiency of the compiler and
14594 the compiler options used during generation.
14596 Non-Debug Version: 64K Code, 5K Data, 69K Total
14597 Debug Version: 137K Code, 58K Data, 195K Total
14601 Implemented wbinvd() macro, pending a kernel-wide definition.
14603 Fixed /proc/acpi/event to handle poll() and short reads.
14605 ASL Compiler, version X2026:
14607 Fixed a problem introduced in the previous label where the AML
14609 code emitted for package objects produced packages with zero
14612 ----------------------------------------
14613 Summary of changes for this label: 08_16_01
14615 ACPI CA Core Subsystem:
14617 The following ACPI 2.0 ASL operators have been implemented in the
14618 AML interpreter (These are already supported by the Intel ASL
14619 compiler): ToDecimalString, ToHexString, ToString, ToInteger, and
14620 ToBuffer. Support for 64-bit AML constants is implemented in the
14621 AML parser, debugger, and disassembler.
14623 The internal memory tracking mechanism (leak detection code) has
14624 been upgraded to reduce the memory overhead (a separate tracking
14625 block is no longer allocated for each memory allocation), and now
14626 supports all of the internal object caches.
14628 The data structures and code for the internal object caches have
14629 been coelesced and optimized so that there is a single cache and
14630 memory list data structure and a single group of functions that
14631 implement generic cache management. This has reduced the code
14632 size in both the debug and release versions of the subsystem.
14634 The DEBUG_PRINT macro(s) have been optimized for size and replaced
14635 by ACPI_DEBUG_PRINT. The syntax for this macro is slightly
14636 different, because it generates a single call to an internal
14637 function. This results in a savings of about 90 bytes per
14638 invocation, resulting in an overall code and data savings of about
14639 16% in the debug version of the subsystem.
14643 Fixed C3 disk corruption problems and re-enabled C3 on supporting
14646 Integrated low-level sleep code by Patrick Mochel.
14648 Further tweaked source code Linuxization.
14654 Support for ACPI 2.0 variable length packages is fixed/completed.
14656 Fixed a problem where the optional length parameter for the ACPI
14657 2.0 ToString operator.
14659 Fixed multiple extraneous error messages when a syntax error is
14660 detected within the declaration line of a control method.
14662 ----------------------------------------
14663 Summary of changes for this label: 07_17_01
14665 ACPI CA Core Subsystem:
14667 Added a new interface named AcpiGetFirmwareTable to obtain any
14668 ACPI table via the ACPI signature. The interface can be called at
14669 any time during kernel initialization, even before the kernel
14670 virtual memory manager is initialized and paging is enabled. This
14671 allows kernel subsystems to obtain ACPI tables very early, even
14672 before the ACPI CA subsystem is initialized.
14674 Fixed a problem where Fields defined with the AnyAcc attribute
14675 could be resolved to the incorrect address under the following
14676 conditions: 1) the field width is larger than 8 bits and 2) the
14677 parent operation region is not defined on a DWORD boundary.
14679 Fixed a problem where the interpreter is not being locked during
14680 namespace initialization (during execution of the _INI control
14681 methods), causing an error when an attempt is made to release it
14684 ACPI 2.0 support in the AML Interpreter has begun and will be
14685 ongoing throughout the rest of this year. In this label, The Mod
14686 operator is implemented.
14688 Added a new data type to contain full PCI addresses named
14689 ACPI_PCI_ID. This structure contains the PCI Segment, Bus, Device,
14690 and Function values.
14694 Enhanced the Linux version of the source code to change most
14695 capitalized ACPI type names to lowercase. For example, all
14696 instances of ACPI_STATUS are changed to acpi_status. This will
14697 result in a large diff, but the change is strictly cosmetic and
14698 aligns the CA code closer to the Linux coding standard.
14702 The interfaces to the PCI configuration space have been changed to
14703 add the PCI Segment number and to split the single 32-bit combined
14704 DeviceFunction field into two 16-bit fields. This was
14705 accomplished by moving the four values that define an address in
14706 PCI configuration space (segment, bus, device, and function) to
14707 the new ACPI_PCI_ID structure.
14709 The changes to the PCI configuration space interfaces led to a
14710 reexamination of the complete set of address space access
14711 interfaces for PCI, I/O, and Memory. The previously existing 18
14712 interfaces have proven difficult to maintain (any small change
14713 must be propagated across at least 6 interfaces) and do not easily
14714 allow for future expansion to 64 bits if necessary. Also, on some
14715 systems, it would not be appropriate to demultiplex the access
14716 width (8, 16, 32,or 64) before calling the OSL if the
14717 corresponding native OS interfaces contain a similar access width
14718 parameter. For these reasons, the 18 address space interfaces
14719 have been replaced by these 6 new ones:
14721 AcpiOsReadPciConfiguration
14722 AcpiOsWritePciConfiguration
14728 Added a new interface named AcpiOsGetRootPointer to allow the OSL
14729 to perform the platform and/or OS-specific actions necessary to
14730 obtain the ACPI RSDP table pointer. On IA-32 platforms, this
14731 interface will simply call down to the CA core to perform the low-
14732 memory search for the table. On IA-64, the RSDP is obtained from
14733 EFI. Migrating this interface to the OSL allows the CA core to
14735 remain OS and platform independent.
14737 Added a new interface named AcpiOsSignal to provide a generic
14738 "function code and pointer" interface for various miscellaneous
14739 signals and notifications that must be made to the host OS. The
14740 first such signals are intended to support the ASL Fatal and
14741 Breakpoint operators. In the latter case, the AcpiOsBreakpoint
14742 interface has been obsoleted.
14744 The definition of the AcpiFormatException interface has been
14745 changed to simplify its use. The caller no longer must supply a
14746 buffer to the call; A pointer to a const string is now returned
14747 directly. This allows the call to be easily used in printf
14748 statements, etc. since the caller does not have to manage a local
14752 ASL Compiler, Version X2025:
14754 The ACPI 2.0 Switch/Case/Default operators have been implemented
14755 and are fully functional. They will work with all ACPI 1.0
14756 interpreters, since the operators are simply translated to If/Else
14759 The ACPI 2.0 ElseIf operator is implemented and will also work
14760 with 1.0 interpreters, for the same reason.
14762 Implemented support for ACPI 2.0 variable-length packages. These
14763 packages have a separate opcode, and their size is determined by
14764 the interpreter at run-time.
14766 Documentation The ACPI CA Programmer Reference has been updated to
14767 reflect the new interfaces and changes to existing interfaces.
14769 ------------------------------------------
14770 Summary of changes for this label: 06_15_01
14772 ACPI CA Core Subsystem:
14774 Fixed a problem where a DWORD-accessed field within a Buffer
14775 object would get its byte address inadvertently rounded down to
14776 the nearest DWORD. Buffers are always Byte-accessible.
14778 ASL Compiler, version X2024:
14780 Fixed a problem where the Switch() operator would either fault or
14781 hang the compiler. Note however, that the AML code for this ACPI
14782 2.0 operator is not yet implemented.
14784 Compiler uses the new AcpiOsGetTimer interface to obtain compile
14787 Implementation of the CreateField operator automatically converts
14788 a reference to a named field within a resource descriptor from a
14789 byte offset to a bit offset if required.
14791 Added some missing named fields from the resource descriptor
14792 support. These are the names that are automatically created by the
14793 compiler to reference fields within a descriptor. They are only
14794 valid at compile time and are not passed through to the AML
14797 Resource descriptor named fields are now typed as Integers and
14798 subject to compile-time typechecking when used in expressions.
14800 ------------------------------------------
14801 Summary of changes for this label: 05_18_01
14803 ACPI CA Core Subsystem:
14805 Fixed a couple of problems in the Field support code where bits
14806 from adjacent fields could be returned along with the proper field
14807 bits. Restructured the field support code to improve performance,
14808 readability and maintainability.
14810 New DEBUG_PRINTP macro automatically inserts the procedure name
14811 into the output, saving hundreds of copies of procedure name
14812 strings within the source, shrinking the memory footprint of the
14813 debug version of the core subsystem.
14815 Source Code Structure:
14817 The source code directory tree was restructured to reflect the
14818 current organization of the component architecture. Some files
14819 and directories have been moved and/or renamed.
14823 Fixed leaking kacpidpc processes.
14825 Fixed queueing event data even when /proc/acpi/event is not
14828 ASL Compiler, version X2020:
14830 Memory allocation performance enhancement - over 24X compile time
14831 improvement on large ASL files. Parse nodes and namestring
14832 buffers are now allocated from a large internal compiler buffer.
14834 The temporary .SRC file is deleted unless the "-s" option is
14837 The "-d" debug output option now sends all output to the .DBG file
14838 instead of the console.
14840 "External" second parameter is now optional
14842 "ElseIf" syntax now properly allows the predicate
14844 Last operand to "Load" now recognized as a Target operand
14846 Debug object can now be used anywhere as a normal object.
14848 ResourceTemplate now returns an object of type BUFFER
14850 EISAID now returns an object of type INTEGER
14852 "Index" now works with a STRING operand
14854 "LoadTable" now accepts optional parameters
14856 "ToString" length parameter is now optional
14858 "Interrupt (ResourceType," parse error fixed.
14860 "Register" with a user-defined region space parse error fixed
14862 Escaped backslash at the end of a string ("\\") scan/parse error
14865 "Revision" is now an object of type INTEGER.
14869 ------------------------------------------
14870 Summary of changes for this label: 05_02_01
14874 /proc/acpi/event now blocks properly.
14876 Removed /proc/sys/acpi. You can still dump your DSDT from
14879 ACPI CA Core Subsystem:
14881 Fixed a problem introduced in the previous label where some of the
14882 "small" resource descriptor types were not recognized.
14884 Improved error messages for the case where an ASL Field is outside
14885 the range of the parent operation region.
14887 ASL Compiler, version X2018:
14890 Added error detection for ASL Fields that extend beyond the length
14891 of the parent operation region (only if the length of the region
14892 is known at compile time.) This includes fields that have a
14893 minimum access width that is smaller than the parent region, and
14894 individual field units that are partially or entirely beyond the
14895 extent of the parent.
14899 ------------------------------------------
14900 Summary of changes for this label: 04_27_01
14902 ACPI CA Core Subsystem:
14904 Fixed a problem where the namespace mutex could be released at the
14905 wrong time during execution of AcpiRemoveAddressSpaceHandler.
14907 Added optional thread ID output for debug traces, to simplify
14908 debugging of multiple threads. Added context switch notification
14909 when the debug code realizes that a different thread is now
14910 executing ACPI code.
14912 Some additional external data types have been prefixed with the
14913 string "ACPI_" for consistency. This may effect existing code.
14914 The data types affected are the external callback typedefs - e.g.,
14916 WALK_CALLBACK becomes ACPI_WALK_CALLBACK.
14920 Fixed an issue with the OSL semaphore implementation where a
14921 thread was waking up with an error from receiving a SIGCHLD
14924 Linux version of ACPI CA now uses the system C library for string
14925 manipulation routines instead of a local implementation.
14927 Cleaned up comments and removed TBDs.
14929 ASL Compiler, version X2017:
14931 Enhanced error detection and reporting for all file I/O
14936 Programmer Reference updated to version 1.06.
14940 ------------------------------------------
14941 Summary of changes for this label: 04_13_01
14943 ACPI CA Core Subsystem:
14945 Restructured support for BufferFields and RegionFields.
14946 BankFields support is now fully operational. All known 32-bit
14947 limitations on field sizes have been removed. Both BufferFields
14948 and (Operation) RegionFields are now supported by the same field
14951 Resource support now supports QWORD address and IO resources. The
14952 16/32/64 bit address structures and the Extended IRQ structure
14953 have been changed to properly handle Source Resource strings.
14955 A ThreadId of -1 is now used to indicate a "mutex not acquired"
14956 condition internally and must never be returned by AcpiOsThreadId.
14957 This reserved value was changed from 0 since Unix systems allow a
14962 Driver code reorganized to enhance portability
14964 Added a kernel configuration option to control ACPI_DEBUG
14966 Fixed the EC driver to honor _GLK.
14968 ASL Compiler, version X2016:
14970 Fixed support for the "FixedHw" keyword. Previously, the FixedHw
14971 address space was set to 0, not 0x7f as it should be.
14973 ------------------------------------------
14974 Summary of changes for this label: 03_13_01
14976 ACPI CA Core Subsystem:
14978 During ACPI initialization, the _SB_._INI method is now run if
14981 Notify handler fix - notifies are deferred until the parent method
14982 completes execution. This fixes the "mutex already acquired"
14983 issue seen occasionally.
14985 Part of the "implicit conversion" rules in ACPI 2.0 have been
14986 found to cause compatibility problems with existing ASL/AML. The
14987 convert "result-to-target-type" implementation has been removed
14988 for stores to method Args and Locals. Source operand conversion
14989 is still fully implemented. Possible changes to ACPI 2.0
14990 specification pending.
14992 Fix to AcpiRsCalculatePciRoutingTableLength to return correct
14995 Fix for compiler warnings for 64-bit compiles.
14999 /proc output aligned for easier parsing.
15001 Release-version compile problem fixed.
15003 New kernel configuration options documented in Configure.help.
15005 IBM 600E - Fixed Sleep button may generate "Invalid <NULL>
15010 Power resource driver integrated with bus manager.
15012 Fixed kernel fault during active cooling for thermal zones.
15016 The source code tree has been restructured.
15020 ------------------------------------------
15021 Summary of changes for this label: 03_02_01
15023 Linux OS Services Layer (OSL):
15025 Major revision of all Linux-specific code.
15027 Modularized all ACPI-specific drivers.
15029 Added new thermal zone and power resource drivers.
15031 Revamped /proc interface (new functionality is under /proc/acpi).
15033 New kernel configuration options.
15035 Linux known issues:
15037 New kernel configuration options not documented in Configure.help
15041 Module dependencies not currently implemented. If used, they
15042 should be loaded in this order: busmgr, power, ec, system,
15043 processor, battery, ac_adapter, button, thermal.
15045 Modules will not load if CONFIG_MODVERSION is set.
15047 IBM 600E - entering S5 may reboot instead of shutting down.
15049 IBM 600E - Sleep button may generate "Invalid <NULL> context"
15052 Some systems may fail with "execution mutex already acquired"
15055 ACPI CA Core Subsystem:
15057 Added a new OSL Interface, AcpiOsGetThreadId. This was required
15058 for the deadlock detection code. Defined to return a non-zero, 32-
15059 bit thread ID for the currently executing thread. May be a non-
15060 zero constant integer on single-thread systems.
15062 Implemented deadlock detection for internal subsystem mutexes. We
15063 may add conditional compilation for this code (debug only) later.
15065 ASL/AML Mutex object semantics are now fully supported. This
15066 includes multiple acquires/releases by owner and support for the
15068 Mutex SyncLevel parameter.
15070 A new "Force Release" mechanism automatically frees all ASL
15071 Mutexes that have been acquired but not released when a thread
15072 exits the interpreter. This forces conformance to the ACPI spec
15073 ("All mutexes must be released when an invocation exits") and
15074 prevents deadlocked ASL threads. This mechanism can be expanded
15075 (later) to monitor other resource acquisitions if OEM ASL code
15076 continues to misbehave (which it will).
15078 Several new ACPI exception codes have been added for the Mutex
15081 Recursive method calls are now allowed and supported (the ACPI
15082 spec does in fact allow recursive method calls.) The number of
15083 recursive calls is subject to the restrictions imposed by the
15084 SERIALIZED method keyword and SyncLevel (ACPI 2.0) method
15087 Implemented support for the SyncLevel parameter for control
15088 methods (ACPI 2.0 feature)
15090 Fixed a deadlock problem when multiple threads attempted to use
15093 Fixed a problem where the string length of a String package
15094 element was not always set in a package returned from
15095 AcpiEvaluateObject.
15097 Fixed a problem where the length of a String package element was
15098 not always included in the length of the overall package returned
15099 from AcpiEvaluateObject.
15101 Added external interfaces (Acpi*) to the ACPI debug memory
15102 manager. This manager keeps a list of all outstanding
15103 allocations, and can therefore detect memory leaks and attempts to
15104 free memory blocks more than once. Useful for code such as the
15105 power manager, etc. May not be appropriate for device drivers.
15106 Performance with the debug code enabled is slow.
15108 The ACPI Global Lock is now an optional hardware element.
15110 ASL Compiler Version X2015:
15112 Integrated changes to allow the compiler to be generated on
15113 multiple platforms.
15115 Linux makefile added to generate the compiler on Linux
15119 All platform-specific headers have been moved to their own
15120 subdirectory, Include/Platform.
15122 New source file added, Interpreter/ammutex.c
15124 New header file, Include/acstruct.h
15128 The programmer reference has been updated for the following new
15129 interfaces: AcpiOsGetThreadId AcpiAllocate AcpiCallocate AcpiFree
15131 ------------------------------------------
15132 Summary of changes for this label: 02_08_01
15134 Core ACPI CA Subsystem: Fixed a problem where an error was
15135 incorrectly returned if the return resource buffer was larger than
15136 the actual data (in the resource interfaces).
15138 References to named objects within packages are resolved to the
15140 full pathname string before packages are returned directly (via
15141 the AcpiEvaluateObject interface) or indirectly via the resource
15144 Linux OS Services Layer (OSL):
15146 Improved /proc battery interface.
15149 Added C-state debugging output and other miscellaneous fixes.
15151 ASL Compiler Version X2014:
15153 All defined method arguments can now be used as local variables,
15154 including the ones that are not actually passed in as parameters.
15155 The compiler tracks initialization of the arguments and issues an
15156 exception if they are used without prior assignment (just like
15159 The -o option now specifies a filename prefix that is used for all
15160 output files, including the AML output file. Otherwise, the
15161 default behavior is as follows: 1) the AML goes to the file
15162 specified in the DSDT. 2) all other output files use the input
15163 source filename as the base.
15165 ------------------------------------------
15166 Summary of changes for this label: 01_25_01
15168 Core ACPI CA Subsystem: Restructured the implementation of object
15169 store support within the interpreter. This includes support for
15170 the Store operator as well as any ASL operators that include a
15173 Partially implemented support for Implicit Result-to-Target
15174 conversion. This is when a result object is converted on the fly
15175 to the type of an existing target object. Completion of this
15176 support is pending further analysis of the ACPI specification
15177 concerning this matter.
15179 CPU-specific code has been removed from the subsystem (hardware
15182 New Power Management Timer functions added
15184 Linux OS Services Layer (OSL): Moved system state transition code
15185 to the core, fixed it, and modified Linux OSL accordingly.
15187 Fixed C2 and C3 latency calculations.
15190 We no longer use the compilation date for the version message on
15191 initialization, but retrieve the version from AcpiGetSystemInfo().
15193 Incorporated for fix Sony VAIO machines.
15195 Documentation: The Programmer Reference has been updated and
15199 ASL Compiler: Version X2013: Fixed a problem where the line
15200 numbering and error reporting could get out of sync in the
15201 presence of multiple include files.
15203 ------------------------------------------
15204 Summary of changes for this label: 01_15_01
15206 Core ACPI CA Subsystem:
15208 Implemented support for type conversions in the execution of the
15209 ASL Concatenate operator (The second operand is converted to
15210 match the type of the first operand before concatenation.)
15212 Support for implicit source operand conversion is partially
15213 implemented. The ASL source operand types Integer, Buffer, and
15214 String are freely interchangeable for most ASL operators and are
15215 converted by the interpreter on the fly as required. Implicit
15216 Target operand conversion (where the result is converted to the
15217 target type before storing) is not yet implemented.
15219 Support for 32-bit and 64-bit BCD integers is implemented.
15221 Problem fixed where a field read on an aligned field could cause a
15222 read past the end of the field.
15224 New exception, AE_AML_NO_RETURN_VALUE, is returned when a method
15225 does not return a value, but the caller expects one. (The ASL
15226 compiler flags this as a warning.)
15231 1. Static typechecking of all operands is implemented. This
15232 prevents the use of invalid objects (such as using a Package where
15233 an Integer is required) at compile time instead of at interpreter
15235 2. The ASL source line is printed with ALL errors and warnings.
15236 3. Bug fix for source EOF without final linefeed.
15237 4. Debug option is split into a parse trace and a namespace trace.
15238 5. Namespace output option (-n) includes initial values for
15239 integers and strings.
15240 6. Parse-only option added for quick syntax checking.
15241 7. Compiler checks for duplicate ACPI name declarations
15244 1. Relaxed typechecking to allow interchangeability between
15245 strings, integers, and buffers. These types are now converted by
15246 the interpreter at runtime.
15247 2. Compiler reports time taken by each internal subsystem in the
15251 ------------------------------------------
15252 Summary of changes for this label: 12_14_00
15256 This is the first official release of the compiler. Since the
15257 compiler requires elements of the Core Subsystem, this label
15258 synchronizes everything.
15260 ------------------------------------------
15261 Summary of changes for this label: 12_08_00
15264 Fixed a problem where named references within the ASL definition
15265 of both OperationRegions and CreateXXXFields did not work
15266 properly. The symptom was an AE_AML_OPERAND_TYPE during
15267 initialization of the region/field. This is similar (but not
15268 related internally) to the problem that was fixed in the last
15271 Implemented both 32-bit and 64-bit support for the BCD ASL
15272 functions ToBCD and FromBCD.
15274 Updated all legal headers to include "2000" in the copyright
15277 ------------------------------------------
15278 Summary of changes for this label: 12_01_00
15280 Fixed a problem where method invocations within the ASL definition
15281 of both OperationRegions and CreateXXXFields did not work
15282 properly. The symptom was an AE_AML_OPERAND_TYPE during
15283 initialization of the region/field:
15285 nsinit-0209: AE_AML_OPERAND_TYPE while getting region arguments
15286 [DEBG] ammonad-0284: Exec_monadic2_r/Not: bad operand(s)
15289 Fixed a problem where operators with more than one nested
15290 subexpression would fail. The symptoms were varied, by mostly
15291 AE_AML_OPERAND_TYPE errors. This was actually a rather serious
15292 problem that has gone unnoticed until now.
15294 Subtract (Add (1,2), Multiply (3,4))
15296 Fixed a problem where AcpiGetHandle didn't quite get fixed in the
15297 previous build (The prefix part of a relative path was handled
15300 Fixed a problem where Operation Region initialization failed if
15301 the operation region name was a "namepath" instead of a simple
15302 "nameseg". Symptom was an AE_NO_OPERAND error.
15304 Fixed a problem where an assignment to a local variable via the
15305 indirect RefOf mechanism only worked for the first such
15306 assignment. Subsequent assignments were ignored.
15308 ------------------------------------------
15309 Summary of changes for this label: 11_15_00
15311 ACPI 2.0 table support with backwards support for ACPI 1.0 and the
15312 0.71 extensions. Note: although we can read ACPI 2.0 BIOS tables,
15313 the AML interpreter does NOT have support for the new 2.0 ASL
15314 grammar terms at this time.
15316 All ACPI hardware access is via the GAS structures in the ACPI 2.0
15319 All physical memory addresses across all platforms are now 64 bits
15320 wide. Logical address width remains dependent on the platform
15323 AcpiOsMapMemory interface changed to a 64-bit physical address.
15325 The AML interpreter integer size is now 64 bits, as per the ACPI
15328 For backwards compatibility with ACPI 1.0, ACPI tables with a
15329 revision number less than 2 use 32-bit integers only.
15331 Fixed a problem where the evaluation of OpRegion operands did not
15332 always resolve them to numbers properly.
15334 ------------------------------------------
15335 Summary of changes for this label: 10_20_00
15337 Fix for CBN_._STA issue. This fix will allow correct access to
15338 CBN_ OpRegions when the _STA returns 0x8.
15340 Support to convert ACPI constants (Ones, Zeros, One) to actual
15341 values before a package object is returned
15343 Fix for method call as predicate to if/while construct causing
15344 incorrect if/while behavior
15346 Fix for Else block package lengths sometimes calculated wrong (if
15349 Fix for Processor object length field, was always zero
15351 Table load abort if FACP sanity check fails
15353 Fix for problem with Scope(name) if name already exists
15355 Warning emitted if a named object referenced cannot be found
15356 (resolved) during method execution.
15362 ------------------------------------------
15363 Summary of changes for this label: 9_29_00
15365 New table initialization interfaces: AcpiInitializeSubsystem no
15366 longer has any parameters AcpiFindRootPointer - Find the RSDP (if
15367 necessary) AcpiLoadTables (RSDP) - load all tables found at RSDP-
15368 >RSDT Obsolete Interfaces AcpiLoadFirmwareTables - replaced by
15371 Note: These interface changes require changes to all existing OSDs
15373 The PCI_Config default address space handler is always installed
15374 at the root namespace object.
15376 -------------------------------------------
15377 Summary of changes for this label: 09_15_00
15379 The new initialization architecture is implemented. New
15380 interfaces are: AcpiInitializeSubsystem (replaces AcpiInitialize)
15381 AcpiEnableSubsystem Obsolete Interfaces: AcpiLoadNamespace
15383 (Namespace is automatically loaded when a table is loaded)
15385 The ACPI_OPERAND_OBJECT has been optimized to shrink its size from
15386 52 bytes to 32 bytes. There is usually one of these for every
15387 namespace object, so the memory savings is significant.
15389 Implemented just-in-time evaluation of the CreateField operators.
15391 Bug fixes for IA-64 support have been integrated.
15393 Additional code review comments have been implemented
15395 The so-called "third pass parse" has been replaced by a final walk
15396 through the namespace to initialize all operation regions (address
15397 spaces) and fields that have not yet been initialized during the
15398 execution of the various _INI and REG methods.
15400 New file - namespace/nsinit.c
15402 -------------------------------------------
15403 Summary of changes for this label: 09_01_00
15405 Namespace manager data structures have been reworked to change the
15406 primary object from a table to a single object. This has
15407 resulted in dynamic memory savings of 3X within the namespace and
15408 2X overall in the ACPI CA subsystem.
15410 Fixed problem where the call to AcpiEvFindPciRootBuses was
15411 inadvertently left commented out.
15413 Reduced the warning count when generating the source with the GCC
15416 Revision numbers added to each module header showing the
15417 SourceSafe version of the file. Please refer to this version
15418 number when giving us feedback or comments on individual modules.
15420 The main object types within the subsystem have been renamed to
15421 clarify their purpose:
15423 ACPI_INTERNAL_OBJECT -> ACPI_OPERAND_OBJECT
15424 ACPI_GENERIC_OP -> ACPI_PARSE_OBJECT
15425 ACPI_NAME_TABLE_ENTRY -> ACPI_NAMESPACE_NODE
15427 NOTE: no changes to the initialization sequence are included in
15430 -------------------------------------------
15431 Summary of changes for this label: 08_23_00
15433 Fixed problem where TerminateControlMethod was being called
15434 multiple times per method
15436 Fixed debugger problem where single stepping caused a semaphore to
15439 Improved performance through additional parse object caching -
15440 added ACPI_EXTENDED_OP type
15442 -------------------------------------------
15443 Summary of changes for this label: 08_10_00
15445 Parser/Interpreter integration: Eliminated the creation of
15446 complete parse trees for ACPI tables and control methods.
15447 Instead, parse subtrees are created and then deleted as soon as
15448 they are processed (Either entered into the namespace or executed
15449 by the interpreter). This reduces the use of dynamic kernel
15450 memory significantly. (about 10X)
15452 Exception codes broken into classes and renumbered. Be sure to
15453 recompile all code that includes acexcep.h. Hopefully we won't
15454 have to renumber the codes again now that they are split into
15455 classes (environment, programmer, AML code, ACPI table, and
15458 Fixed some additional alignment issues in the Resource Manager
15461 Implemented semaphore tracking in the AcpiExec utility, and fixed
15462 several places where mutexes/semaphores were being unlocked
15463 without a corresponding lock operation. There are no known
15464 semaphore or mutex "leaks" at this time.
15466 Fixed the case where an ASL Return operator is used to return an
15469 -------------------------------------------
15470 Summary of changes for this label: 07_28_00
15472 Fixed a problem with the way addresses were calculated in
15473 AcpiAmlReadFieldData() and AcpiAmlWriteFieldData(). This problem
15474 manifested itself when a Field was created with WordAccess or
15475 DwordAccess, but the field unit defined within the Field was less
15477 than a Word or Dword.
15479 Fixed a problem in AmlDumpOperands() module's loop to pull
15480 operands off of the operand stack to display information. The
15481 problem manifested itself as a TLB error on 64-bit systems when
15482 accessing an operand stack with two or more operands.
15484 Fixed a problem with the PCI configuration space handlers where
15485 context was getting confused between accesses. This required a
15486 change to the generic address space handler and address space
15487 setup definitions. Handlers now get both a global handler context
15488 (this is the one passed in by the user when executing
15489 AcpiInstallAddressSpaceHandler() and a specific region context
15490 that is unique to each region (For example, the _ADR, _SEG and
15491 _BBN values associated with a specific region). The generic
15492 function definitions have changed to the following:
15494 typedef ACPI_STATUS (*ADDRESS_SPACE_HANDLER) ( UINT32 Function,
15495 UINT32 Address, UINT32 BitWidth, UINT32 *Value, void
15496 *HandlerContext, // This used to be void *Context void
15497 *RegionContext); // This is an additional parameter
15499 typedef ACPI_STATUS (*ADDRESS_SPACE_SETUP) ( ACPI_HANDLE
15500 RegionHandle, UINT32 Function, void *HandlerContext, void
15501 **RegionContext); // This used to be **ReturnContext
15503 -------------------------------------------
15504 Summary of changes for this label: 07_21_00
15506 Major file consolidation and rename. All files within the
15507 interpreter have been renamed as well as most header files. This
15508 was done to prevent collisions with existing files in the host
15509 OSs -- filenames such as "config.h" and "global.h" seem to be
15510 quite common. The VC project files have been updated. All
15511 makefiles will require modification.
15513 The parser/interpreter integration continues in Phase 5 with the
15514 implementation of a complete 2-pass parse (the AML is parsed
15515 twice) for each table; This avoids the construction of a huge
15516 parse tree and therefore reduces the amount of dynamic memory
15517 required by the subsystem. Greater use of the parse object cache
15518 means that performance is unaffected.
15520 Many comments from the two code reviews have been rolled in.
15522 The 64-bit alignment support is complete.
15524 -------------------------------------------
15525 Summary of changes for this label: 06_30_00
15527 With a nod and a tip of the hat to the technology of yesteryear,
15528 we've added support in the source code for 80 column output
15529 devices. The code is now mostly constrained to 80 columns or
15530 less to support environments and editors that 1) cannot display
15531 or print more than 80 characters on a single line, and 2) cannot
15532 disable line wrapping.
15534 A major restructuring of the namespace data structure has been
15535 completed. The result is 1) cleaner and more
15536 understandable/maintainable code, and 2) a significant reduction
15537 in the dynamic memory requirement for each named ACPI object
15540 -------------------------------------------
15541 Summary of changes for this label: 06_23_00
15543 Linux support has been added. In order to obtain approval to get
15544 the ACPI CA subsystem into the Linux kernel, we've had to make
15545 quite a few changes to the base subsystem that will affect all
15546 users (all the changes are generic and OS- independent). The
15547 effects of these global changes have been somewhat far reaching.
15548 Files have been merged and/or renamed and interfaces have been
15549 renamed. The major changes are described below.
15551 Osd* interfaces renamed to AcpiOs* to eliminate namespace
15552 pollution/confusion within our target kernels. All OSD
15553 interfaces must be modified to match the new naming convention.
15555 Files merged across the subsystem. A number of the smaller source
15556 and header files have been merged to reduce the file count and
15557 increase the density of the existing files. There are too many
15558 to list here. In general, makefiles that call out individual
15559 files will require rebuilding.
15561 Interpreter files renamed. All interpreter files now have the
15562 prefix am* instead of ie* and is*.
15564 Header files renamed: The acapi.h file is now acpixf.h. The
15565 acpiosd.h file is now acpiosxf.h. We are removing references to
15566 the acronym "API" since it is somewhat windowsy. The new name is
15567 "external interface" or xface or xf in the filenames.j
15570 All manifest constants have been forced to upper case (some were
15571 mixed case.) Also, the string "ACPI_" has been prepended to many
15572 (not all) of the constants, typedefs, and structs.
15574 The globals "DebugLevel" and "DebugLayer" have been renamed
15575 "AcpiDbgLevel" and "AcpiDbgLayer" respectively.
15577 All other globals within the subsystem are now prefixed with
15578 "AcpiGbl_" Internal procedures within the subsystem are now
15579 prefixed with "Acpi" (with only a few exceptions). The original
15580 two-letter abbreviation for the subcomponent remains after "Acpi"
15581 - for example, CmCallocate became AcpiCmCallocate.
15583 Added a source code translation/conversion utility. Used to
15584 generate the Linux source code, it can be modified to generate
15585 other types of source as well. Can also be used to cleanup
15586 existing source by removing extraneous spaces and blank lines.
15587 Found in tools/acpisrc/*
15589 OsdUnMapMemory was renamed to OsdUnmapMemory and then
15590 AcpiOsUnmapMemory. (UnMap became Unmap).
15592 A "MaxUnits" parameter has been added to AcpiOsCreateSemaphore.
15593 When set to one, this indicates that the caller wants to use the
15595 semaphore as a mutex, not a counting semaphore. ACPI CA uses
15596 both types. However, implementers of this call may want to use
15597 different OS primitives depending on the type of semaphore
15598 requested. For example, some operating systems provide separate
15600 "mutex" and "semaphore" interfaces - where the mutex interface is
15601 much faster because it doesn't have all the overhead of a full
15602 semaphore implementation.
15604 Fixed a deadlock problem where a method that accesses the PCI
15605 address space can block forever if it is the first access to the
15608 -------------------------------------------
15609 Summary of changes for this label: 06_02_00
15611 Support for environments that cannot handle unaligned data
15612 accesses (e.g. firmware and OS environments devoid of alignment
15613 handler technology namely SAL/EFI and the IA-64 Linux kernel) has
15614 been added (via configurable macros) in these three areas: -
15615 Transfer of data from the raw AML byte stream is done via byte
15616 moves instead of word/dword/qword moves. - External objects are
15617 aligned within the user buffer, including package elements (sub-
15618 objects). - Conversion of name strings to UINT32 Acpi Names is now
15621 The Store operator was modified to mimic Microsoft's
15622 implementation when storing to a Buffer Field.
15624 Added a check of the BM_STS bit before entering C3.
15626 The methods subdirectory has been obsoleted and removed. A new
15627 file, cmeval.c subsumes the functionality.
15629 A 16-bit (DOS) version of AcpiExec has been developed. The
15630 makefile is under the acpiexec directory.